Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

14 files changed, 15142 insertions, 0 deletions

diff --git a/drivers/media/usb/em28xx/Kconfig b/drivers/media/usb/em28xx/Kconfig
new file mode 100644
index 000000000..f2031a933
--- /dev/null
+++ b/drivers/media/usb/em28xx/Kconfig
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_EM28XX
+	tristate "Empia EM28xx USB devices support"
+	depends on VIDEO_DEV && I2C
+	select VIDEO_TUNER
+	select VIDEO_TVEEPROM
+
+config VIDEO_EM28XX_V4L2
+	tristate "Empia EM28xx analog TV, video capture and/or webcam support"
+	depends on VIDEO_EM28XX
+	select VIDEOBUF2_VMALLOC
+	select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT
+	select VIDEO_TVP5150 if MEDIA_SUBDRV_AUTOSELECT
+	select VIDEO_MSP3400 if MEDIA_SUBDRV_AUTOSELECT
+	select VIDEO_MT9V011 if MEDIA_SUBDRV_AUTOSELECT && MEDIA_CAMERA_SUPPORT
+	select VIDEO_OV2640 if MEDIA_SUBDRV_AUTOSELECT && MEDIA_CAMERA_SUPPORT
+	help
+	  This is a video4linux driver for Empia 28xx based TV cards.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called em28xx
+
+config VIDEO_EM28XX_ALSA
+	depends on VIDEO_EM28XX && SND
+	select SND_PCM
+	tristate "Empia EM28xx ALSA audio module"
+	help
+	  This is an ALSA driver for some Empia 28xx based TV cards.
+
+	  This is not required for em2800/em2820/em2821 boards. However,
+	  newer em28xx devices uses Vendor Class for audio, instead of
+	  implementing the USB Audio Class. For those chips, this module
+	  will enable digital audio.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called em28xx-alsa
+
+config VIDEO_EM28XX_DVB
+	tristate "DVB/ATSC Support for em28xx based TV cards"
+	depends on VIDEO_EM28XX && DVB_CORE
+	select DVB_LGDT330X if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_LGDT3305 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_LGDT3306A if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_ZL10353 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TDA10023 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_S921 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_DRXD if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_CXD2820R if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_DRXK if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TDA18271C2DD if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TDA10071 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_A8293 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_MT352 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_S5H1409 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_MB86A20S if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_QT1010 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_TDA18271 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_TDA18212 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_M88DS3103 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TS2020 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_DRX39XYJ if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_SI2168 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_SI2157 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TC90522 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_QM1D1C0042 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_SIMPLE if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_XC2028 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_XC5000 if MEDIA_SUBDRV_AUTOSELECT
+	select MEDIA_TUNER_MT2060 if MEDIA_SUBDRV_AUTOSELECT
+	help
+	  This adds support for DVB cards based on the
+	  Empiatech em28xx chips.
+
+config VIDEO_EM28XX_RC
+	tristate "EM28XX Remote Controller support"
+	depends on RC_CORE
+	depends on VIDEO_EM28XX
+	depends on !(RC_CORE=m && VIDEO_EM28XX=y)
+	default VIDEO_EM28XX
+	help
+	  Enables Remote Controller support on em28xx driver.
diff --git a/drivers/media/usb/em28xx/Makefile b/drivers/media/usb/em28xx/Makefile
new file mode 100644
index 000000000..8c2fc3104
--- /dev/null
+++ b/drivers/media/usb/em28xx/Makefile
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+em28xx-y +=	em28xx-core.o em28xx-i2c.o em28xx-cards.o em28xx-camera.o
+
+em28xx-v4l-objs := em28xx-video.o em28xx-vbi.o
+em28xx-alsa-objs := em28xx-audio.o
+em28xx-rc-objs := em28xx-input.o
+
+obj-$(CONFIG_VIDEO_EM28XX) += em28xx.o
+obj-$(CONFIG_VIDEO_EM28XX_V4L2) += em28xx-v4l.o
+obj-$(CONFIG_VIDEO_EM28XX_ALSA) += em28xx-alsa.o
+obj-$(CONFIG_VIDEO_EM28XX_DVB) += em28xx-dvb.o
+obj-$(CONFIG_VIDEO_EM28XX_RC) += em28xx-rc.o
+
+ccflags-y += -I $(srctree)/drivers/media/tuners
+ccflags-y += -I $(srctree)/drivers/media/dvb-frontends
diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c
new file mode 100644
index 000000000..dc968fd5a
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-audio.c
@@ -0,0 +1,985 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Empiatech em28x1 audio extension
+//
+// Copyright (C) 2006 Markus Rechberger <mrechberger@gmail.com>
+//
+// Copyright (C) 2007-2016 Mauro Carvalho Chehab
+//	- Port to work with the in-kernel driver
+//	- Cleanups, fixes, alsa-controls, etc.
+//
+// This driver is based on my previous au600 usb pstn audio driver
+// and inherits all the copyrights
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/init.h>
+#include <linux/sound.h>
+#include <linux/spinlock.h>
+#include <linux/soundcard.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/info.h>
+#include <sound/initval.h>
+#include <sound/control.h>
+#include <sound/tlv.h>
+#include <sound/ac97_codec.h>
+#include <media/v4l2-common.h>
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "activates debug info");
+
+#define EM28XX_MAX_AUDIO_BUFS		5
+#define EM28XX_MIN_AUDIO_PACKETS	64
+
+#define dprintk(fmt, arg...) do {					\
+	if (debug)						\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "video: %s: " fmt, __func__, ## arg);	\
+} while (0)
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+
+static int em28xx_deinit_isoc_audio(struct em28xx *dev)
+{
+	int i;
+
+	dprintk("Stopping isoc\n");
+	for (i = 0; i < dev->adev.num_urb; i++) {
+		struct urb *urb = dev->adev.urb[i];
+
+		if (!irqs_disabled())
+			usb_kill_urb(urb);
+		else
+			usb_unlink_urb(urb);
+	}
+
+	return 0;
+}
+
+static void em28xx_audio_isocirq(struct urb *urb)
+{
+	struct em28xx            *dev = urb->context;
+	int                      i;
+	unsigned int             oldptr;
+	int                      period_elapsed = 0;
+	int                      status;
+	unsigned char            *cp;
+	unsigned int             stride;
+	struct snd_pcm_substream *substream;
+	struct snd_pcm_runtime   *runtime;
+
+	if (dev->disconnected) {
+		dprintk("device disconnected while streaming. URB status=%d.\n",
+			urb->status);
+		atomic_set(&dev->adev.stream_started, 0);
+		return;
+	}
+
+	switch (urb->status) {
+	case 0:             /* success */
+	case -ETIMEDOUT:    /* NAK */
+		break;
+	case -ECONNRESET:   /* kill */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	default:            /* error */
+		dprintk("urb completion error %d.\n", urb->status);
+		break;
+	}
+
+	if (atomic_read(&dev->adev.stream_started) == 0)
+		return;
+
+	if (dev->adev.capture_pcm_substream) {
+		substream = dev->adev.capture_pcm_substream;
+		runtime = substream->runtime;
+		stride = runtime->frame_bits >> 3;
+
+		for (i = 0; i < urb->number_of_packets; i++) {
+			unsigned long flags;
+			int length =
+			    urb->iso_frame_desc[i].actual_length / stride;
+			cp = (unsigned char *)urb->transfer_buffer +
+			    urb->iso_frame_desc[i].offset;
+
+			if (!length)
+				continue;
+
+			oldptr = dev->adev.hwptr_done_capture;
+			if (oldptr + length >= runtime->buffer_size) {
+				unsigned int cnt =
+				    runtime->buffer_size - oldptr;
+				memcpy(runtime->dma_area + oldptr * stride, cp,
+				       cnt * stride);
+				memcpy(runtime->dma_area, cp + cnt * stride,
+				       length * stride - cnt * stride);
+			} else {
+				memcpy(runtime->dma_area + oldptr * stride, cp,
+				       length * stride);
+			}
+
+			snd_pcm_stream_lock_irqsave(substream, flags);
+
+			dev->adev.hwptr_done_capture += length;
+			if (dev->adev.hwptr_done_capture >=
+			    runtime->buffer_size)
+				dev->adev.hwptr_done_capture -=
+				    runtime->buffer_size;
+
+			dev->adev.capture_transfer_done += length;
+			if (dev->adev.capture_transfer_done >=
+			    runtime->period_size) {
+				dev->adev.capture_transfer_done -=
+				    runtime->period_size;
+				period_elapsed = 1;
+			}
+
+			snd_pcm_stream_unlock_irqrestore(substream, flags);
+		}
+		if (period_elapsed)
+			snd_pcm_period_elapsed(substream);
+	}
+	urb->status = 0;
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status < 0)
+		dev_err(&dev->intf->dev,
+			"resubmit of audio urb failed (error=%i)\n",
+			status);
+}
+
+static int em28xx_init_audio_isoc(struct em28xx *dev)
+{
+	int       i, err;
+
+	dprintk("Starting isoc transfers\n");
+
+	/* Start streaming */
+	for (i = 0; i < dev->adev.num_urb; i++) {
+		memset(dev->adev.transfer_buffer[i], 0x80,
+		       dev->adev.urb[i]->transfer_buffer_length);
+
+		err = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
+		if (err) {
+			dev_err(&dev->intf->dev,
+				"submit of audio urb failed (error=%i)\n",
+				err);
+			em28xx_deinit_isoc_audio(dev);
+			atomic_set(&dev->adev.stream_started, 0);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static const struct snd_pcm_hardware snd_em28xx_hw_capture = {
+	.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_MMAP           |
+		SNDRV_PCM_INFO_INTERLEAVED    |
+		SNDRV_PCM_INFO_BATCH	      |
+		SNDRV_PCM_INFO_MMAP_VALID,
+
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+
+	.rates = SNDRV_PCM_RATE_48000,
+
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+	.buffer_bytes_max = 62720 * 8,	/* just about the value in usbaudio.c */
+
+	/*
+	 * The period is 12.288 bytes. Allow a 10% of variation along its
+	 * value, in order to avoid overruns/underruns due to some clock
+	 * drift.
+	 *
+	 * FIXME: This period assumes 64 packets, and a 48000 PCM rate.
+	 * Calculate it dynamically.
+	 */
+	.period_bytes_min = 11059,
+	.period_bytes_max = 13516,
+
+	.periods_min = 2,
+	.periods_max = 98,		/* 12544, */
+};
+
+static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
+{
+	struct em28xx *dev = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int nonblock, ret = 0;
+
+	if (!dev) {
+		pr_err("em28xx-audio: BUG: em28xx can't find device struct. Can't proceed with open\n");
+		return -ENODEV;
+	}
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	dprintk("opening device and trying to acquire exclusive lock\n");
+
+	nonblock = !!(substream->f_flags & O_NONBLOCK);
+	if (nonblock) {
+		if (!mutex_trylock(&dev->lock))
+			return -EAGAIN;
+	} else {
+		mutex_lock(&dev->lock);
+	}
+
+	runtime->hw = snd_em28xx_hw_capture;
+
+	if (dev->adev.users == 0) {
+		if (!dev->alt || dev->is_audio_only) {
+			struct usb_device *udev;
+
+			udev = interface_to_usbdev(dev->intf);
+
+			if (dev->is_audio_only)
+				/* audio is on a separate interface */
+				dev->alt = 1;
+			else
+				/* audio is on the same interface as video */
+				dev->alt = 7;
+				/*
+				 * FIXME: The intention seems to be to select
+				 * the alt setting with the largest
+				 * wMaxPacketSize for the video endpoint.
+				 * At least dev->alt should be used instead, but
+				 * we should probably not touch it at all if it
+				 * is already >0, because wMaxPacketSize of the
+				 * audio endpoints seems to be the same for all.
+				 */
+			dprintk("changing alternate number on interface %d to %d\n",
+				dev->ifnum, dev->alt);
+			usb_set_interface(udev, dev->ifnum, dev->alt);
+		}
+
+		/* Sets volume, mute, etc */
+		dev->mute = 0;
+		ret = em28xx_audio_analog_set(dev);
+		if (ret < 0)
+			goto err;
+	}
+
+	kref_get(&dev->ref);
+	dev->adev.users++;
+	mutex_unlock(&dev->lock);
+
+	/* Dynamically adjust the period size */
+	snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+				     dev->adev.period * 95 / 100,
+				     dev->adev.period * 105 / 100);
+
+	dev->adev.capture_pcm_substream = substream;
+
+	return 0;
+err:
+	mutex_unlock(&dev->lock);
+
+	dev_err(&dev->intf->dev,
+		"Error while configuring em28xx mixer\n");
+	return ret;
+}
+
+static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream)
+{
+	struct em28xx *dev = snd_pcm_substream_chip(substream);
+
+	dprintk("closing device\n");
+
+	dev->mute = 1;
+	mutex_lock(&dev->lock);
+	dev->adev.users--;
+	if (atomic_read(&dev->adev.stream_started) > 0) {
+		atomic_set(&dev->adev.stream_started, 0);
+		schedule_work(&dev->adev.wq_trigger);
+	}
+
+	em28xx_audio_analog_set(dev);
+	mutex_unlock(&dev->lock);
+	kref_put(&dev->ref, em28xx_free_device);
+
+	return 0;
+}
+
+static int snd_em28xx_prepare(struct snd_pcm_substream *substream)
+{
+	struct em28xx *dev = snd_pcm_substream_chip(substream);
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	dev->adev.hwptr_done_capture = 0;
+	dev->adev.capture_transfer_done = 0;
+
+	return 0;
+}
+
+static void audio_trigger(struct work_struct *work)
+{
+	struct em28xx_audio *adev =
+			    container_of(work, struct em28xx_audio, wq_trigger);
+	struct em28xx *dev = container_of(adev, struct em28xx, adev);
+
+	if (atomic_read(&adev->stream_started)) {
+		dprintk("starting capture");
+		em28xx_init_audio_isoc(dev);
+	} else {
+		dprintk("stopping capture");
+		em28xx_deinit_isoc_audio(dev);
+	}
+}
+
+static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
+				      int cmd)
+{
+	struct em28xx *dev = snd_pcm_substream_chip(substream);
+	int retval = 0;
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_START:
+		atomic_set(&dev->adev.stream_started, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_STOP:
+		atomic_set(&dev->adev.stream_started, 0);
+		break;
+	default:
+		retval = -EINVAL;
+	}
+	schedule_work(&dev->adev.wq_trigger);
+	return retval;
+}
+
+static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream
+						    *substream)
+{
+	unsigned long flags;
+	struct em28xx *dev;
+	snd_pcm_uframes_t hwptr_done;
+
+	dev = snd_pcm_substream_chip(substream);
+	if (dev->disconnected)
+		return SNDRV_PCM_POS_XRUN;
+
+	spin_lock_irqsave(&dev->adev.slock, flags);
+	hwptr_done = dev->adev.hwptr_done_capture;
+	spin_unlock_irqrestore(&dev->adev.slock, flags);
+
+	return hwptr_done;
+}
+
+/*
+ * AC97 volume control support
+ */
+static int em28xx_vol_info(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_info *info)
+{
+	struct em28xx *dev = snd_kcontrol_chip(kcontrol);
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	info->count = 2;
+	info->value.integer.min = 0;
+	info->value.integer.max = 0x1f;
+
+	return 0;
+}
+
+static int em28xx_vol_put(struct snd_kcontrol *kcontrol,
+			  struct snd_ctl_elem_value *value)
+{
+	struct em28xx *dev = snd_kcontrol_chip(kcontrol);
+	struct snd_pcm_substream *substream = dev->adev.capture_pcm_substream;
+	u16 val = (0x1f - (value->value.integer.value[0] & 0x1f)) |
+		  (0x1f - (value->value.integer.value[1] & 0x1f)) << 8;
+	int nonblock = 0;
+	int rc;
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (substream)
+		nonblock = !!(substream->f_flags & O_NONBLOCK);
+	if (nonblock) {
+		if (!mutex_trylock(&dev->lock))
+			return -EAGAIN;
+	} else {
+		mutex_lock(&dev->lock);
+	}
+	rc = em28xx_read_ac97(dev, kcontrol->private_value);
+	if (rc < 0)
+		goto err;
+
+	val |= rc & 0x8000;	/* Preserve the mute flag */
+
+	rc = em28xx_write_ac97(dev, kcontrol->private_value, val);
+	if (rc < 0)
+		goto err;
+
+	dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
+		(val & 0x8000) ? "muted " : "",
+		0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
+		val, (int)kcontrol->private_value);
+
+err:
+	mutex_unlock(&dev->lock);
+	return rc;
+}
+
+static int em28xx_vol_get(struct snd_kcontrol *kcontrol,
+			  struct snd_ctl_elem_value *value)
+{
+	struct em28xx *dev = snd_kcontrol_chip(kcontrol);
+	struct snd_pcm_substream *substream = dev->adev.capture_pcm_substream;
+	int nonblock = 0;
+	int val;
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (substream)
+		nonblock = !!(substream->f_flags & O_NONBLOCK);
+	if (nonblock) {
+		if (!mutex_trylock(&dev->lock))
+			return -EAGAIN;
+	} else {
+		mutex_lock(&dev->lock);
+	}
+	val = em28xx_read_ac97(dev, kcontrol->private_value);
+	mutex_unlock(&dev->lock);
+	if (val < 0)
+		return val;
+
+	dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
+		(val & 0x8000) ? "muted " : "",
+		0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
+		val, (int)kcontrol->private_value);
+
+	value->value.integer.value[0] = 0x1f - (val & 0x1f);
+	value->value.integer.value[1] = 0x1f - ((val >> 8) & 0x1f);
+
+	return 0;
+}
+
+static int em28xx_vol_put_mute(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *value)
+{
+	struct em28xx *dev = snd_kcontrol_chip(kcontrol);
+	u16 val = value->value.integer.value[0];
+	struct snd_pcm_substream *substream = dev->adev.capture_pcm_substream;
+	int nonblock = 0;
+	int rc;
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (substream)
+		nonblock = !!(substream->f_flags & O_NONBLOCK);
+	if (nonblock) {
+		if (!mutex_trylock(&dev->lock))
+			return -EAGAIN;
+	} else {
+		mutex_lock(&dev->lock);
+	}
+	rc = em28xx_read_ac97(dev, kcontrol->private_value);
+	if (rc < 0)
+		goto err;
+
+	if (val)
+		rc &= 0x1f1f;
+	else
+		rc |= 0x8000;
+
+	rc = em28xx_write_ac97(dev, kcontrol->private_value, rc);
+	if (rc < 0)
+		goto err;
+
+	dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
+		(val & 0x8000) ? "muted " : "",
+		0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
+		val, (int)kcontrol->private_value);
+
+err:
+	mutex_unlock(&dev->lock);
+	return rc;
+}
+
+static int em28xx_vol_get_mute(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *value)
+{
+	struct em28xx *dev = snd_kcontrol_chip(kcontrol);
+	struct snd_pcm_substream *substream = dev->adev.capture_pcm_substream;
+	int nonblock = 0;
+	int val;
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (substream)
+		nonblock = !!(substream->f_flags & O_NONBLOCK);
+	if (nonblock) {
+		if (!mutex_trylock(&dev->lock))
+			return -EAGAIN;
+	} else {
+		mutex_lock(&dev->lock);
+	}
+	val = em28xx_read_ac97(dev, kcontrol->private_value);
+	mutex_unlock(&dev->lock);
+	if (val < 0)
+		return val;
+
+	if (val & 0x8000)
+		value->value.integer.value[0] = 0;
+	else
+		value->value.integer.value[0] = 1;
+
+	dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
+		(val & 0x8000) ? "muted " : "",
+		0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
+		val, (int)kcontrol->private_value);
+
+	return 0;
+}
+
+static const DECLARE_TLV_DB_SCALE(em28xx_db_scale, -3450, 150, 0);
+
+static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev,
+			   char *name, int id)
+{
+	int err;
+	char ctl_name[44];
+	struct snd_kcontrol *kctl;
+	struct snd_kcontrol_new tmp;
+
+	memset(&tmp, 0, sizeof(tmp));
+	tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	tmp.private_value = id,
+	tmp.name  = ctl_name,
+
+	/* Add Mute Control */
+	sprintf(ctl_name, "%s Switch", name);
+	tmp.get  = em28xx_vol_get_mute;
+	tmp.put  = em28xx_vol_put_mute;
+	tmp.info = snd_ctl_boolean_mono_info;
+	kctl = snd_ctl_new1(&tmp, dev);
+	err = snd_ctl_add(card, kctl);
+	if (err < 0)
+		return err;
+	dprintk("Added control %s for ac97 volume control 0x%04x\n",
+		ctl_name, id);
+
+	memset(&tmp, 0, sizeof(tmp));
+	tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	tmp.private_value = id,
+	tmp.name  = ctl_name,
+
+	/* Add Volume Control */
+	sprintf(ctl_name, "%s Volume", name);
+	tmp.get   = em28xx_vol_get;
+	tmp.put   = em28xx_vol_put;
+	tmp.info  = em28xx_vol_info;
+	tmp.tlv.p = em28xx_db_scale,
+	kctl = snd_ctl_new1(&tmp, dev);
+	err = snd_ctl_add(card, kctl);
+	if (err < 0)
+		return err;
+	dprintk("Added control %s for ac97 volume control 0x%04x\n",
+		ctl_name, id);
+
+	return 0;
+}
+
+/*
+ * register/unregister code and data
+ */
+static const struct snd_pcm_ops snd_em28xx_pcm_capture = {
+	.open      = snd_em28xx_capture_open,
+	.close     = snd_em28xx_pcm_close,
+	.prepare   = snd_em28xx_prepare,
+	.trigger   = snd_em28xx_capture_trigger,
+	.pointer   = snd_em28xx_capture_pointer,
+};
+
+static void em28xx_audio_free_urb(struct em28xx *dev)
+{
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int i;
+
+	for (i = 0; i < dev->adev.num_urb; i++) {
+		struct urb *urb = dev->adev.urb[i];
+
+		if (!urb)
+			continue;
+
+		usb_free_coherent(udev, urb->transfer_buffer_length,
+				  dev->adev.transfer_buffer[i],
+				  urb->transfer_dma);
+
+		usb_free_urb(urb);
+	}
+	kfree(dev->adev.urb);
+	kfree(dev->adev.transfer_buffer);
+	dev->adev.num_urb = 0;
+}
+
+/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
+static int em28xx_audio_ep_packet_size(struct usb_device *udev,
+				       struct usb_endpoint_descriptor *e)
+{
+	int size = le16_to_cpu(e->wMaxPacketSize);
+
+	if (udev->speed == USB_SPEED_HIGH)
+		return (size & 0x7ff) *  (1 + (((size) >> 11) & 0x03));
+
+	return size & 0x7ff;
+}
+
+static int em28xx_audio_urb_init(struct em28xx *dev)
+{
+	struct usb_interface *intf;
+	struct usb_endpoint_descriptor *e, *ep = NULL;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int                 i, ep_size, interval, num_urb, npackets;
+	int		    urb_size, bytes_per_transfer;
+	u8 alt;
+
+	if (dev->ifnum)
+		alt = 1;
+	else
+		alt = 7;
+
+	intf = usb_ifnum_to_if(udev, dev->ifnum);
+
+	if (intf->num_altsetting <= alt) {
+		dev_err(&dev->intf->dev, "alt %d doesn't exist on interface %d\n",
+			dev->ifnum, alt);
+		return -ENODEV;
+	}
+
+	for (i = 0; i < intf->altsetting[alt].desc.bNumEndpoints; i++) {
+		e = &intf->altsetting[alt].endpoint[i].desc;
+		if (!usb_endpoint_dir_in(e))
+			continue;
+		if (e->bEndpointAddress == EM28XX_EP_AUDIO) {
+			ep = e;
+			break;
+		}
+	}
+
+	if (!ep) {
+		dev_err(&dev->intf->dev, "Couldn't find an audio endpoint");
+		return -ENODEV;
+	}
+
+	ep_size = em28xx_audio_ep_packet_size(udev, ep);
+	interval = 1 << (ep->bInterval - 1);
+
+	dev_info(&dev->intf->dev,
+		 "Endpoint 0x%02x %s on intf %d alt %d interval = %d, size %d\n",
+		 EM28XX_EP_AUDIO, usb_speed_string(udev->speed),
+		 dev->ifnum, alt, interval, ep_size);
+
+	/* Calculate the number and size of URBs to better fit the audio samples */
+
+	/*
+	 * Estimate the number of bytes per DMA transfer.
+	 *
+	 * This is given by the bit rate (for now, only 48000 Hz) multiplied
+	 * by 2 channels and 2 bytes/sample divided by the number of microframe
+	 * intervals and by the microframe rate (125 us)
+	 */
+	bytes_per_transfer = DIV_ROUND_UP(48000 * 2 * 2, 125 * interval);
+
+	/*
+	 * Estimate the number of transfer URBs. Don't let it go past the
+	 * maximum number of URBs that is known to be supported by the device.
+	 */
+	num_urb = DIV_ROUND_UP(bytes_per_transfer, ep_size);
+	if (num_urb > EM28XX_MAX_AUDIO_BUFS)
+		num_urb = EM28XX_MAX_AUDIO_BUFS;
+
+	/*
+	 * Now that we know the number of bytes per transfer and the number of
+	 * URBs, estimate the typical size of an URB, in order to adjust the
+	 * minimal number of packets.
+	 */
+	urb_size = bytes_per_transfer / num_urb;
+
+	/*
+	 * Now, calculate the amount of audio packets to be filled on each
+	 * URB. In order to preserve the old behaviour, use a minimal
+	 * threshold for this value.
+	 */
+	npackets = EM28XX_MIN_AUDIO_PACKETS;
+	if (urb_size > ep_size * npackets)
+		npackets = DIV_ROUND_UP(urb_size, ep_size);
+
+	dev_info(&dev->intf->dev,
+		 "Number of URBs: %d, with %d packets and %d size\n",
+		 num_urb, npackets, urb_size);
+
+	/* Estimate the bytes per period */
+	dev->adev.period = urb_size * npackets;
+
+	/* Allocate space to store the number of URBs to be used */
+
+	dev->adev.transfer_buffer = kcalloc(num_urb,
+					    sizeof(*dev->adev.transfer_buffer),
+					    GFP_KERNEL);
+	if (!dev->adev.transfer_buffer)
+		return -ENOMEM;
+
+	dev->adev.urb = kcalloc(num_urb, sizeof(*dev->adev.urb), GFP_KERNEL);
+	if (!dev->adev.urb) {
+		kfree(dev->adev.transfer_buffer);
+		return -ENOMEM;
+	}
+
+	/* Alloc memory for each URB and for each transfer buffer */
+	dev->adev.num_urb = num_urb;
+	for (i = 0; i < num_urb; i++) {
+		struct urb *urb;
+		int j, k;
+		void *buf;
+
+		urb = usb_alloc_urb(npackets, GFP_KERNEL);
+		if (!urb) {
+			em28xx_audio_free_urb(dev);
+			return -ENOMEM;
+		}
+		dev->adev.urb[i] = urb;
+
+		buf = usb_alloc_coherent(udev, npackets * ep_size, GFP_KERNEL,
+					 &urb->transfer_dma);
+		if (!buf) {
+			dev_err(&dev->intf->dev,
+				"usb_alloc_coherent failed!\n");
+			em28xx_audio_free_urb(dev);
+			return -ENOMEM;
+		}
+		dev->adev.transfer_buffer[i] = buf;
+
+		urb->dev = udev;
+		urb->context = dev;
+		urb->pipe = usb_rcvisocpipe(udev, EM28XX_EP_AUDIO);
+		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+		urb->transfer_buffer = buf;
+		urb->interval = interval;
+		urb->complete = em28xx_audio_isocirq;
+		urb->number_of_packets = npackets;
+		urb->transfer_buffer_length = ep_size * npackets;
+
+		for (j = k = 0; j < npackets; j++, k += ep_size) {
+			urb->iso_frame_desc[j].offset = k;
+			urb->iso_frame_desc[j].length = ep_size;
+		}
+	}
+
+	return 0;
+}
+
+static int em28xx_audio_init(struct em28xx *dev)
+{
+	struct em28xx_audio *adev = &dev->adev;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	struct snd_pcm      *pcm;
+	struct snd_card     *card;
+	static int          devnr;
+	int		    err;
+
+	if (dev->usb_audio_type != EM28XX_USB_AUDIO_VENDOR) {
+		/*
+		 * This device does not support the extension (in this case
+		 * the device is expecting the snd-usb-audio module or
+		 * doesn't have analog audio support at all)
+		 */
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Binding audio extension\n");
+
+	kref_get(&dev->ref);
+
+	dev_info(&dev->intf->dev,
+		 "em28xx-audio.c: Copyright (C) 2006 Markus Rechberger\n");
+	dev_info(&dev->intf->dev,
+		 "em28xx-audio.c: Copyright (C) 2007-2016 Mauro Carvalho Chehab\n");
+
+	err = snd_card_new(&dev->intf->dev, index[devnr], "Em28xx Audio",
+			   THIS_MODULE, 0, &card);
+	if (err < 0)
+		return err;
+
+	spin_lock_init(&adev->slock);
+	adev->sndcard = card;
+	adev->udev = udev;
+
+	err = snd_pcm_new(card, "Em28xx Audio", 0, 0, 1, &pcm);
+	if (err < 0)
+		goto card_free;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_em28xx_pcm_capture);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
+	pcm->info_flags = 0;
+	pcm->private_data = dev;
+	strscpy(pcm->name, "Empia 28xx Capture", sizeof(pcm->name));
+
+	strscpy(card->driver, "Em28xx-Audio", sizeof(card->driver));
+	strscpy(card->shortname, "Em28xx Audio", sizeof(card->shortname));
+	strscpy(card->longname, "Empia Em28xx Audio", sizeof(card->longname));
+
+	INIT_WORK(&adev->wq_trigger, audio_trigger);
+
+	if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+		em28xx_cvol_new(card, dev, "Video", AC97_VIDEO);
+		em28xx_cvol_new(card, dev, "Line In", AC97_LINE);
+		em28xx_cvol_new(card, dev, "Phone", AC97_PHONE);
+		em28xx_cvol_new(card, dev, "Microphone", AC97_MIC);
+		em28xx_cvol_new(card, dev, "CD", AC97_CD);
+		em28xx_cvol_new(card, dev, "AUX", AC97_AUX);
+		em28xx_cvol_new(card, dev, "PCM", AC97_PCM);
+
+		em28xx_cvol_new(card, dev, "Master", AC97_MASTER);
+		em28xx_cvol_new(card, dev, "Line", AC97_HEADPHONE);
+		em28xx_cvol_new(card, dev, "Mono", AC97_MASTER_MONO);
+		em28xx_cvol_new(card, dev, "LFE", AC97_CENTER_LFE_MASTER);
+		em28xx_cvol_new(card, dev, "Surround", AC97_SURROUND_MASTER);
+	}
+
+	err = em28xx_audio_urb_init(dev);
+	if (err)
+		goto card_free;
+
+	err = snd_card_register(card);
+	if (err < 0)
+		goto urb_free;
+
+	dev_info(&dev->intf->dev, "Audio extension successfully initialized\n");
+	return 0;
+
+urb_free:
+	em28xx_audio_free_urb(dev);
+
+card_free:
+	snd_card_free(card);
+	adev->sndcard = NULL;
+
+	return err;
+}
+
+static int em28xx_audio_fini(struct em28xx *dev)
+{
+	if (!dev)
+		return 0;
+
+	if (dev->usb_audio_type != EM28XX_USB_AUDIO_VENDOR) {
+		/*
+		 * This device does not support the extension (in this case
+		 * the device is expecting the snd-usb-audio module or
+		 * doesn't have analog audio support at all)
+		 */
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Closing audio extension\n");
+
+	if (dev->adev.sndcard) {
+		snd_card_disconnect(dev->adev.sndcard);
+		flush_work(&dev->adev.wq_trigger);
+
+		em28xx_audio_free_urb(dev);
+
+		snd_card_free(dev->adev.sndcard);
+		dev->adev.sndcard = NULL;
+	}
+
+	kref_put(&dev->ref, em28xx_free_device);
+	return 0;
+}
+
+static int em28xx_audio_suspend(struct em28xx *dev)
+{
+	if (!dev)
+		return 0;
+
+	if (dev->usb_audio_type != EM28XX_USB_AUDIO_VENDOR)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Suspending audio extension\n");
+	em28xx_deinit_isoc_audio(dev);
+	atomic_set(&dev->adev.stream_started, 0);
+	return 0;
+}
+
+static int em28xx_audio_resume(struct em28xx *dev)
+{
+	if (!dev)
+		return 0;
+
+	if (dev->usb_audio_type != EM28XX_USB_AUDIO_VENDOR)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Resuming audio extension\n");
+	/* Nothing to do other than schedule_work() ?? */
+	schedule_work(&dev->adev.wq_trigger);
+	return 0;
+}
+
+static struct em28xx_ops audio_ops = {
+	.id   = EM28XX_AUDIO,
+	.name = "Em28xx Audio Extension",
+	.init = em28xx_audio_init,
+	.fini = em28xx_audio_fini,
+	.suspend = em28xx_audio_suspend,
+	.resume = em28xx_audio_resume,
+};
+
+static int __init em28xx_alsa_register(void)
+{
+	return em28xx_register_extension(&audio_ops);
+}
+
+static void __exit em28xx_alsa_unregister(void)
+{
+	em28xx_unregister_extension(&audio_ops);
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Markus Rechberger <mrechberger@gmail.com>");
+MODULE_AUTHOR("Mauro Carvalho Chehab");
+MODULE_DESCRIPTION(DRIVER_DESC " - audio interface");
+MODULE_VERSION(EM28XX_VERSION);
+
+module_init(em28xx_alsa_register);
+module_exit(em28xx_alsa_unregister);
diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c
new file mode 100644
index 000000000..d1e66b503
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-camera.c
@@ -0,0 +1,422 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-camera.c - driver for Empia EM25xx/27xx/28xx USB video capture devices
+//
+// Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@kernel.org>
+// Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/i2c.h>
+#include <linux/usb.h>
+#include <media/i2c/mt9v011.h>
+#include <media/v4l2-common.h>
+
+/* Possible i2c addresses of Micron sensors */
+static unsigned short micron_sensor_addrs[] = {
+	0xb8 >> 1,   /* MT9V111, MT9V403 */
+	0xba >> 1,   /* MT9M001/011/111/112, MT9V011/012/112, MT9D011 */
+	0x90 >> 1,   /* MT9V012/112, MT9D011 (alternative address) */
+	I2C_CLIENT_END
+};
+
+/* Possible i2c addresses of Omnivision sensors */
+static unsigned short omnivision_sensor_addrs[] = {
+	0x42 >> 1,   /* OV7725, OV7670/60/48 */
+	0x60 >> 1,   /* OV2640, OV9650/53/55 */
+	I2C_CLIENT_END
+};
+
+/* FIXME: Should be replaced by a proper mt9m111 driver */
+static int em28xx_initialize_mt9m111(struct em28xx *dev)
+{
+	int i;
+	unsigned char regs[][3] = {
+		{ 0x0d, 0x00, 0x01, },  /* reset and use defaults */
+		{ 0x0d, 0x00, 0x00, },
+		{ 0x0a, 0x00, 0x21, },
+		{ 0x21, 0x04, 0x00, },  /* full readout spd, no row/col skip */
+	};
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				&regs[i][0], 3);
+
+	/* FIXME: This won't be creating a sensor at the media graph */
+
+	return 0;
+}
+
+/* FIXME: Should be replaced by a proper mt9m001 driver */
+static int em28xx_initialize_mt9m001(struct em28xx *dev)
+{
+	int i;
+	unsigned char regs[][3] = {
+		{ 0x0d, 0x00, 0x01, },
+		{ 0x0d, 0x00, 0x00, },
+		{ 0x04, 0x05, 0x00, },	/* hres = 1280 */
+		{ 0x03, 0x04, 0x00, },  /* vres = 1024 */
+		{ 0x20, 0x11, 0x00, },
+		{ 0x06, 0x00, 0x10, },
+		{ 0x2b, 0x00, 0x24, },
+		{ 0x2e, 0x00, 0x24, },
+		{ 0x35, 0x00, 0x24, },
+		{ 0x2d, 0x00, 0x20, },
+		{ 0x2c, 0x00, 0x20, },
+		{ 0x09, 0x0a, 0xd4, },
+		{ 0x35, 0x00, 0x57, },
+	};
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				&regs[i][0], 3);
+
+	/* FIXME: This won't be creating a sensor at the media graph */
+
+	return 0;
+}
+
+/*
+ * Probes Micron sensors with 8 bit address and 16 bit register width
+ */
+static int em28xx_probe_sensor_micron(struct em28xx *dev)
+{
+	int ret, i;
+	char *name;
+	u16 id;
+
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+
+	dev->em28xx_sensor = EM28XX_NOSENSOR;
+	for (i = 0; micron_sensor_addrs[i] != I2C_CLIENT_END; i++) {
+		client->addr = micron_sensor_addrs[i];
+		/* Read chip ID from register 0x00 */
+		ret = i2c_smbus_read_word_data(client, 0x00); /* assumes LE */
+		if (ret < 0) {
+			if (ret != -ENXIO)
+				dev_err(&dev->intf->dev,
+					"couldn't read from i2c device 0x%02x: error %i\n",
+				       client->addr << 1, ret);
+			continue;
+		}
+		id = swab16(ret); /* LE -> BE */
+		/* Read chip ID from register 0xff */
+		ret = i2c_smbus_read_word_data(client, 0xff);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		/* Validate chip ID to be sure we have a Micron device */
+		if (id != swab16(ret))
+			continue;
+		/* Check chip ID */
+		switch (id) {
+		case 0x1222:
+			name = "MT9V012"; /* MI370 */ /* 640x480 */
+			break;
+		case 0x1229:
+			name = "MT9V112"; /* 640x480 */
+			break;
+		case 0x1433:
+			name = "MT9M011"; /* 1280x1024 */
+			break;
+		case 0x143a:    /* found in the ECS G200 */
+			name = "MT9M111"; /* MI1310 */ /* 1280x1024 */
+			dev->em28xx_sensor = EM28XX_MT9M111;
+			break;
+		case 0x148c:
+			name = "MT9M112"; /* MI1320 */ /* 1280x1024 */
+			break;
+		case 0x1511:
+			name = "MT9D011"; /* MI2010 */ /* 1600x1200 */
+			break;
+		case 0x8232:
+		case 0x8243:	/* rev B */
+			name = "MT9V011"; /* MI360 */ /* 640x480 */
+			dev->em28xx_sensor = EM28XX_MT9V011;
+			break;
+		case 0x8431:
+			name = "MT9M001"; /* 1280x1024 */
+			dev->em28xx_sensor = EM28XX_MT9M001;
+			break;
+		default:
+			dev_info(&dev->intf->dev,
+				 "unknown Micron sensor detected: 0x%04x\n",
+				 id);
+			return 0;
+		}
+
+		if (dev->em28xx_sensor == EM28XX_NOSENSOR)
+			dev_info(&dev->intf->dev,
+				 "unsupported sensor detected: %s\n", name);
+		else
+			dev_info(&dev->intf->dev,
+				 "sensor %s detected\n", name);
+
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+/*
+ * Probes Omnivision sensors with 8 bit address and register width
+ */
+static int em28xx_probe_sensor_omnivision(struct em28xx *dev)
+{
+	int ret, i;
+	char *name;
+	u8 reg;
+	u16 id;
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+
+	dev->em28xx_sensor = EM28XX_NOSENSOR;
+	/*
+	 * NOTE: these devices have the register auto incrementation disabled
+	 * by default, so we have to use single byte reads !
+	 */
+	for (i = 0; omnivision_sensor_addrs[i] != I2C_CLIENT_END; i++) {
+		client->addr = omnivision_sensor_addrs[i];
+		/* Read manufacturer ID from registers 0x1c-0x1d (BE) */
+		reg = 0x1c;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			if (ret != -ENXIO)
+				dev_err(&dev->intf->dev,
+					"couldn't read from i2c device 0x%02x: error %i\n",
+					client->addr << 1, ret);
+			continue;
+		}
+		id = ret << 8;
+		reg = 0x1d;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id += ret;
+		/* Check manufacturer ID */
+		if (id != 0x7fa2)
+			continue;
+		/* Read product ID from registers 0x0a-0x0b (BE) */
+		reg = 0x0a;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id = ret << 8;
+		reg = 0x0b;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id += ret;
+		/* Check product ID */
+		switch (id) {
+		case 0x2642:
+			name = "OV2640";
+			dev->em28xx_sensor = EM28XX_OV2640;
+			break;
+		case 0x7648:
+			name = "OV7648";
+			break;
+		case 0x7660:
+			name = "OV7660";
+			break;
+		case 0x7673:
+			name = "OV7670";
+			break;
+		case 0x7720:
+			name = "OV7720";
+			break;
+		case 0x7721:
+			name = "OV7725";
+			break;
+		case 0x9648: /* Rev 2 */
+		case 0x9649: /* Rev 3 */
+			name = "OV9640";
+			break;
+		case 0x9650:
+		case 0x9652: /* OV9653 */
+			name = "OV9650";
+			break;
+		case 0x9656: /* Rev 4 */
+		case 0x9657: /* Rev 5 */
+			name = "OV9655";
+			break;
+		default:
+			dev_info(&dev->intf->dev,
+				 "unknown OmniVision sensor detected: 0x%04x\n",
+				id);
+			return 0;
+		}
+
+		if (dev->em28xx_sensor == EM28XX_NOSENSOR)
+			dev_info(&dev->intf->dev,
+				 "unsupported sensor detected: %s\n", name);
+		else
+			dev_info(&dev->intf->dev,
+				 "sensor %s detected\n", name);
+
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+int em28xx_detect_sensor(struct em28xx *dev)
+{
+	int ret;
+
+	ret = em28xx_probe_sensor_micron(dev);
+
+	if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0)
+		ret = em28xx_probe_sensor_omnivision(dev);
+
+	/*
+	 * NOTE: the Windows driver also probes i2c addresses
+	 *       0x22 (Samsung ?) and 0x66 (Kodak ?)
+	 */
+
+	if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0) {
+		dev_info(&dev->intf->dev,
+			 "No sensor detected\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+int em28xx_init_camera(struct em28xx *dev)
+{
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+	struct i2c_adapter *adap = &dev->i2c_adap[dev->def_i2c_bus];
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	switch (dev->em28xx_sensor) {
+	case EM28XX_MT9V011:
+	{
+		struct mt9v011_platform_data pdata;
+		struct i2c_board_info mt9v011_info = {
+			.type = "mt9v011",
+			.addr = client->addr,
+			.platform_data = &pdata,
+		};
+
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 480;
+
+		/*
+		 * FIXME: mt9v011 uses I2S speed as xtal clk - at least with
+		 * the Silvercrest cam I have here for testing - for higher
+		 * resolutions, a high clock cause horizontal artifacts, so we
+		 * need to use a lower xclk frequency.
+		 * Yet, it would be possible to adjust xclk depending on the
+		 * desired resolution, since this affects directly the
+		 * frame rate.
+		 */
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		v4l2->sensor_xtal = 4300000;
+		pdata.xtal = v4l2->sensor_xtal;
+		if (NULL ==
+		    v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
+					      &mt9v011_info, NULL))
+			return -ENODEV;
+		v4l2->vinmode = EM28XX_VINMODE_RGB8_GRBG;
+		v4l2->vinctl = 0x00;
+
+		break;
+	}
+	case EM28XX_MT9M001:
+		v4l2->sensor_xres = 1280;
+		v4l2->sensor_yres = 1024;
+
+		em28xx_initialize_mt9m001(dev);
+
+		v4l2->vinmode = EM28XX_VINMODE_RGB8_BGGR;
+		v4l2->vinctl = 0x00;
+
+		break;
+	case EM28XX_MT9M111:
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 512;
+
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_48MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		em28xx_initialize_mt9m111(dev);
+
+		v4l2->vinmode = EM28XX_VINMODE_YUV422_UYVY;
+		v4l2->vinctl = 0x00;
+
+		break;
+	case EM28XX_OV2640:
+	{
+		struct v4l2_subdev *subdev;
+		struct i2c_board_info ov2640_info = {
+			.type = "ov2640",
+			.flags = I2C_CLIENT_SCCB,
+			.addr = client->addr,
+		};
+		struct v4l2_subdev_format format = {
+			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+		};
+
+		/*
+		 * FIXME: sensor supports resolutions up to 1600x1200, but
+		 * resolution setting/switching needs to be modified to
+		 * - switch sensor output resolution (including further
+		 *   configuration changes)
+		 * - adjust bridge xclk
+		 * - disable 16 bit (12 bit) output formats on high resolutions
+		 */
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 480;
+
+		subdev =
+		     v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
+					       &ov2640_info, NULL);
+		if (!subdev)
+			return -ENODEV;
+
+		format.format.code = MEDIA_BUS_FMT_YUYV8_2X8;
+		format.format.width = 640;
+		format.format.height = 480;
+		v4l2_subdev_call(subdev, pad, set_fmt, NULL, &format);
+
+		/* NOTE: for UXGA=1600x1200 switch to 12MHz */
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_24MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		v4l2->vinmode = EM28XX_VINMODE_YUV422_YUYV;
+		v4l2->vinctl = 0x00;
+
+		break;
+	}
+	case EM28XX_NOSENSOR:
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(em28xx_init_camera);
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
new file mode 100644
index 000000000..26408a972
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -0,0 +1,4142 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-cards.c - driver for Empia EM2800/EM2820/2840 USB
+//		    video capture devices
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+//		      Markus Rechberger <mrechberger@gmail.com>
+//		      Mauro Carvalho Chehab <mchehab@kernel.org>
+//		      Sascha Sommer <saschasommer@freenet.de>
+// Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/usb.h>
+#include <media/tuner.h>
+#include <media/drv-intf/msp3400.h>
+#include <media/i2c/saa7115.h>
+#include <dt-bindings/media/tvp5150.h>
+#include <media/i2c/tvaudio.h>
+#include <media/tveeprom.h>
+#include <media/v4l2-common.h>
+#include <sound/ac97_codec.h>
+
+#define DRIVER_NAME         "em28xx"
+
+static int tuner = -1;
+module_param(tuner, int, 0444);
+MODULE_PARM_DESC(tuner, "tuner type");
+
+static unsigned int disable_ir;
+module_param(disable_ir, int, 0444);
+MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
+
+static unsigned int disable_usb_speed_check;
+module_param(disable_usb_speed_check, int, 0444);
+MODULE_PARM_DESC(disable_usb_speed_check,
+		 "override min bandwidth requirement of 480M bps");
+
+static unsigned int card[]     = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
+module_param_array(card,  int, NULL, 0444);
+MODULE_PARM_DESC(card,     "card type");
+
+static int usb_xfer_mode = -1;
+module_param(usb_xfer_mode, int, 0444);
+MODULE_PARM_DESC(usb_xfer_mode,
+		 "USB transfer mode for frame data (-1 = auto, 0 = prefer isoc, 1 = prefer bulk)");
+
+/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS - 1 */
+static DECLARE_BITMAP(em28xx_devused, EM28XX_MAXBOARDS);
+
+struct em28xx_hash_table {
+	unsigned long hash;
+	unsigned int  model;
+	unsigned int  tuner;
+};
+
+static void em28xx_pre_card_setup(struct em28xx *dev);
+
+/*
+ *  Reset sequences for analog/digital modes
+ */
+
+/* Reset for the most [analog] boards */
+static const struct em28xx_reg_seq default_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6d,   ~EM_GPIO_4,	10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Reset for the most [digital] boards */
+static const struct em28xx_reg_seq default_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6e,	~EM_GPIO_4,	10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Board :Zolid Hybrid Tv Stick */
+static struct em28xx_reg_seq zolid_tuner[] = {
+	{EM2820_R08_GPIO_CTRL,		0xfd,		0xff,	100},
+	{EM2820_R08_GPIO_CTRL,		0xfe,		0xff,	100},
+	{		-1,					-1,			-1,		 -1},
+};
+
+static struct em28xx_reg_seq zolid_digital[] = {
+	{EM2820_R08_GPIO_CTRL,		0x6a,		0xff,	100},
+	{EM2820_R08_GPIO_CTRL,		0x7a,		0xff,	100},
+	{EM2880_R04_GPO,			0x04,		0xff,	100},
+	{EM2880_R04_GPO,			0x0c,		0xff,	100},
+	{	-1,						-1,			-1,		 -1},
+};
+
+/* Board Hauppauge WinTV HVR 900 analog */
+static const struct em28xx_reg_seq hauppauge_wintv_hvr_900_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x2d,	~EM_GPIO_4,	10},
+	{	0x05,		0xff,	0x10,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Board Hauppauge WinTV HVR 900 digital */
+static const struct em28xx_reg_seq hauppauge_wintv_hvr_900_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x2e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x04,	0x0f,		10},
+	{EM2880_R04_GPO,	0x0c,	0x0f,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Board Hauppauge WinTV HVR 900 (R2) digital */
+static const struct em28xx_reg_seq hauppauge_wintv_hvr_900R2_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x2e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x0c,	0x0f,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Boards - EM2880 MSI DIGIVOX AD and EM2880_BOARD_MSI_DIGIVOX_AD_II */
+static const struct em28xx_reg_seq em2880_msi_digivox_ad_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x69,   ~EM_GPIO_4,	10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Board - EM2882 Kworld 315U digital */
+static const struct em28xx_reg_seq em2882_kworld_315u_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0xff,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0xfe,	0xff,		10},
+	{EM2880_R04_GPO,	0x04,	0xff,		10},
+	{EM2880_R04_GPO,	0x0c,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0x7e,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq em2882_kworld_315u_tuner_gpio[] = {
+	{EM2880_R04_GPO,	0x08,	0xff,		10},
+	{EM2880_R04_GPO,	0x0c,	0xff,		10},
+	{EM2880_R04_GPO,	0x08,	0xff,		10},
+	{EM2880_R04_GPO,	0x0c,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq kworld_330u_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6d,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x00,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq kworld_330u_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x08,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/*
+ * Evga inDtube
+ * GPIO0 - Enable digital power (s5h1409) - low to enable
+ * GPIO1 - Enable analog power (tvp5150/emp202) - low to enable
+ * GPIO4 - xc3028 reset
+ * GOP3  - s5h1409 reset
+ */
+static const struct em28xx_reg_seq evga_indtube_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x79,   0xff,		60},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq evga_indtube_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x7a,	0xff,		 1},
+	{EM2880_R04_GPO,	0x04,	0xff,		10},
+	{EM2880_R04_GPO,	0x0c,	0xff,		 1},
+	{	-1,		-1,	-1,		-1},
+};
+
+/*
+ * KWorld PlusTV 340U, UB435-Q and UB435-Q V2 (ATSC) GPIOs map:
+ * EM_GPIO_0 - currently unknown
+ * EM_GPIO_1 - LED disable/enable (1 = off, 0 = on)
+ * EM_GPIO_2 - currently unknown
+ * EM_GPIO_3 - currently unknown
+ * EM_GPIO_4 - TDA18271HD/C1 tuner (1 = active, 0 = in reset)
+ * EM_GPIO_5 - LGDT3304 ATSC/QAM demod (1 = active, 0 = in reset)
+ * EM_GPIO_6 - currently unknown
+ * EM_GPIO_7 - currently unknown
+ */
+static const struct em28xx_reg_seq kworld_a340_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6d,	~EM_GPIO_4,	10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq kworld_ub435q_v3_digital[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfe,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xbe,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfe,	0xff,	100},
+	{	-1,			-1,	-1,	-1},
+};
+
+/* Pinnacle Hybrid Pro eb1a:2881 */
+static const struct em28xx_reg_seq pinnacle_hybrid_pro_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0xfd,   ~EM_GPIO_4,	10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq pinnacle_hybrid_pro_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x04,	0xff,	       100},/* zl10353 reset */
+	{EM2880_R04_GPO,	0x0c,	0xff,		 1},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq terratec_cinergy_USB_XS_FR_analog[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6d,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x00,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq terratec_cinergy_USB_XS_FR_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x08,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/*
+ * PCTV HD Mini (80e) GPIOs
+ * 0-5: not used
+ * 6:   demod reset, active low
+ * 7:   LED on, active high
+ */
+static const struct em28xx_reg_seq em2874_pctv_80e_digital[] = {
+	{EM28XX_R06_I2C_CLK,    0x45,   0xff,		  10}, /*400 KHz*/
+	{EM2874_R80_GPIO_P0_CTRL, 0x00,   0xff,		  100},/*Demod reset*/
+	{EM2874_R80_GPIO_P0_CTRL, 0x40,   0xff,		  10},
+	{  -1,			-1,	-1,		  -1},
+};
+
+/*
+ * eb1a:2868 Reddo DVB-C USB TV Box
+ * GPIO4 - CU1216L NIM
+ * Other GPIOs seems to be don't care.
+ */
+static const struct em28xx_reg_seq reddo_dvb_c_usb_box[] = {
+	{EM2820_R08_GPIO_CTRL,	0xfe,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0xde,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0xfe,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0xff,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0x7f,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0x6f,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0xff,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Callback for the most boards */
+static const struct em28xx_reg_seq default_tuner_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	EM_GPIO_4,	EM_GPIO_4,	10},
+	{EM2820_R08_GPIO_CTRL,	0,		EM_GPIO_4,	10},
+	{EM2820_R08_GPIO_CTRL,	EM_GPIO_4,	EM_GPIO_4,	10},
+	{	-1,		-1,		-1,		-1},
+};
+
+/* Mute/unmute */
+static const struct em28xx_reg_seq compro_unmute_tv_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	5,	7,	10},
+	{	-1,		-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq compro_unmute_svid_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	4,	7,	10},
+	{	-1,		-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq compro_mute_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	6,	7,	10},
+	{	-1,		-1,	-1,	-1},
+};
+
+/* Terratec AV350 */
+static const struct em28xx_reg_seq terratec_av350_mute_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	0xff,	0x7f,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq terratec_av350_unmute_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,	0xff,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq silvercrest_reg_seq[] = {
+	{EM2820_R08_GPIO_CTRL,	0xff,	0xff,		10},
+	{EM2820_R08_GPIO_CTRL,	0x01,	0xf7,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq vc211a_enable[] = {
+	{EM2820_R08_GPIO_CTRL,	0xff,	0x07,		10},
+	{EM2820_R08_GPIO_CTRL,	0xff,	0x0f,		10},
+	{EM2820_R08_GPIO_CTRL,	0xff,	0x0b,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+static const struct em28xx_reg_seq dikom_dk300_digital[] = {
+	{EM2820_R08_GPIO_CTRL,	0x6e,	~EM_GPIO_4,	10},
+	{EM2880_R04_GPO,	0x08,	0xff,		10},
+	{	-1,		-1,	-1,		-1},
+};
+
+/* Reset for the most [digital] boards */
+static const struct em28xx_reg_seq leadership_digital[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x70,	0xff,	10},
+	{	-1,			-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq leadership_reset[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xf0,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xb0,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xf0,	0xff,	10},
+	{	-1,			-1,	-1,	-1},
+};
+
+/*
+ * 2013:024f PCTV nanoStick T2 290e
+ * GPIO_6 - demod reset
+ * GPIO_7 - LED
+ */
+static const struct em28xx_reg_seq pctv_290e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x00,	0xff,	80},
+	{EM2874_R80_GPIO_P0_CTRL,	0x40,	0xff,	80}, /* GPIO_6 = 1 */
+	{EM2874_R80_GPIO_P0_CTRL,	0xc0,	0xff,	80}, /* GPIO_7 = 1 */
+	{	-1,			-1,	-1,	-1},
+};
+
+#if 0
+static const struct em28xx_reg_seq terratec_h5_gpio[] = {
+	{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
+	{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
+	{	-1,			-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq terratec_h5_digital[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	10},
+	{	-1,			-1,	-1,	-1},
+};
+#endif
+
+/*
+ * 2013:024f PCTV DVB-S2 Stick 460e
+ * GPIO_0 - POWER_ON
+ * GPIO_1 - BOOST
+ * GPIO_2 - VUV_LNB (red LED)
+ * GPIO_3 - EXT_12V
+ * GPIO_4 - INT_DEM (DEMOD GPIO_0)
+ * GPIO_5 - INT_LNB
+ * GPIO_6 - RESET_DEM
+ * GPIO_7 - LED (green LED)
+ */
+static const struct em28xx_reg_seq pctv_460e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x01,	0xff,	50},
+	{	0x0d,			0xff,	0xff,	50},
+	{EM2874_R80_GPIO_P0_CTRL,	0x41,	0xff,	50}, /* GPIO_6=1 */
+	{	0x0d,			0x42,	0xff,	50},
+	{EM2874_R80_GPIO_P0_CTRL,	0x61,	0xff,	50}, /* GPIO_5=1 */
+	{	-1,			-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq c3tech_digital_duo_digital[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	10}, /* xc5000 reset */
+	{EM2874_R80_GPIO_P0_CTRL,	0xf9,	0xff,	35},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfe,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xbe,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfe,	0xff,	20},
+	{	-1,			-1,	-1,	-1},
+};
+
+/*
+ * 2013:0258 PCTV DVB-S2 Stick (461e)
+ * GPIO 0 = POWER_ON
+ * GPIO 1 = BOOST
+ * GPIO 2 = VUV_LNB (red LED)
+ * GPIO 3 = #EXT_12V
+ * GPIO 4 = INT_DEM
+ * GPIO 5 = INT_LNB
+ * GPIO 6 = #RESET_DEM
+ * GPIO 7 = P07_LED (green LED)
+ */
+static const struct em28xx_reg_seq pctv_461e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,      0x7f, 0xff,    0},
+	{0x0d,                 0xff, 0xff,    0},
+	{EM2874_R80_GPIO_P0_CTRL,      0x3f, 0xff,  100}, /* reset demod */
+	{EM2874_R80_GPIO_P0_CTRL,      0x7f, 0xff,  200}, /* reset demod */
+	{0x0d,                 0x42, 0xff,    0},
+	{EM2874_R80_GPIO_P0_CTRL,      0xeb, 0xff,    0},
+	{EM2874_R5F_TS_ENABLE, 0x84, 0x84,    0}, /* parallel? | null discard */
+	{                  -1,   -1,   -1,   -1},
+};
+
+#if 0
+static const struct em28xx_reg_seq hauppauge_930c_gpio[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x6f,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0x4f,	0xff,	10}, /* xc5000 reset */
+	{EM2874_R80_GPIO_P0_CTRL,	0x6f,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0x4f,	0xff,	10},
+	{	-1,			-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq hauppauge_930c_digital[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	10},
+	{	-1,			-1,	-1,	-1},
+};
+#endif
+
+/*
+ * 1b80:e425 MaxMedia UB425-TC
+ * 1b80:e1cc Delock 61959
+ * GPIO_6 - demod reset, 0=active
+ * GPIO_7 - LED, 0=active
+ */
+static const struct em28xx_reg_seq maxmedia_ub425_tc[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x83,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xc3,	0xff,	100}, /* GPIO_6 = 1 */
+	{EM2874_R80_GPIO_P0_CTRL,	0x43,	0xff,	000}, /* GPIO_7 = 0 */
+	{	-1,			-1,	-1,	-1},
+};
+
+/*
+ * 2304:0242 PCTV QuatroStick (510e)
+ * GPIO_2: decoder reset, 0=active
+ * GPIO_4: decoder suspend, 0=active
+ * GPIO_6: demod reset, 0=active
+ * GPIO_7: LED, 1=active
+ */
+static const struct em28xx_reg_seq pctv_510e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x10,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0x14,	0xff,	100}, /* GPIO_2 = 1 */
+	{EM2874_R80_GPIO_P0_CTRL,	0x54,	0xff,	050}, /* GPIO_6 = 1 */
+	{	-1,			-1,	-1,	-1},
+};
+
+/*
+ * 2013:0251 PCTV QuatroStick nano (520e)
+ * GPIO_2: decoder reset, 0=active
+ * GPIO_4: decoder suspend, 0=active
+ * GPIO_6: demod reset, 0=active
+ * GPIO_7: LED, 1=active
+ */
+static const struct em28xx_reg_seq pctv_520e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0x10,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0x14,	0xff,	100}, /* GPIO_2 = 1 */
+	{EM2874_R80_GPIO_P0_CTRL,	0x54,	0xff,	050}, /* GPIO_6 = 1 */
+	{EM2874_R80_GPIO_P0_CTRL,	0xd4,	0xff,	000}, /* GPIO_7 = 1 */
+	{	-1,			-1,	-1,	-1},
+};
+
+/*
+ * 1ae7:9003/9004 SpeedLink Vicious And Devine Laplace webcam
+ * reg 0x80/0x84:
+ * GPIO_0: capturing LED, 0=on, 1=off
+ * GPIO_2: AV mute button, 0=pressed, 1=unpressed
+ * GPIO 3: illumination button, 0=pressed, 1=unpressed
+ * GPIO_6: illumination/flash LED, 0=on, 1=off
+ * reg 0x81/0x85:
+ * GPIO_7: snapshot button, 0=pressed, 1=unpressed
+ */
+static const struct em28xx_reg_seq speedlink_vad_laplace_reg_seq[] = {
+	{EM2820_R08_GPIO_CTRL,		0xf7,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xb2,	10},
+	{	-1,			-1,	-1,	-1},
+};
+
+static const struct em28xx_reg_seq pctv_292e[] = {
+	{EM2874_R80_GPIO_P0_CTRL,      0xff, 0xff,      0},
+	{0x0d,                         0xff, 0xff,    950},
+	{EM2874_R80_GPIO_P0_CTRL,      0xbd, 0xff,    100},
+	{EM2874_R80_GPIO_P0_CTRL,      0xfd, 0xff,    410},
+	{EM2874_R80_GPIO_P0_CTRL,      0x7d, 0xff,    300},
+	{EM2874_R80_GPIO_P0_CTRL,      0x7c, 0xff,     60},
+	{0x0d,                         0x42, 0xff,     50},
+	{EM2874_R5F_TS_ENABLE,         0x85, 0xff,      0},
+	{-1,                             -1,   -1,     -1},
+};
+
+static const struct em28xx_reg_seq terratec_t2_stick_hd[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0},
+	{0x0d,				0xff,	0xff,	600},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfc,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xbc,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfc,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0x00,	0xff,	300},
+	{EM2874_R80_GPIO_P0_CTRL,	0xf8,	0xff,	100},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfc,	0xff,	300},
+	{0x0d,				0x42,	0xff,	1000},
+	{EM2874_R5F_TS_ENABLE,		0x85,	0xff,	0},
+	{-1,                             -1,   -1,     -1},
+};
+
+static const struct em28xx_reg_seq plex_px_bcud[] = {
+	{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0},
+	{0x0d,				0xff,	0xff,	0},
+	{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
+	{EM28XX_R06_I2C_CLK,		0x40,	0xff,	0},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	100},
+	{EM28XX_R12_VINENABLE,		0x20,	0x20,	0},
+	{0x0d,				0x42,	0xff,	1000},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfc,	0xff,	10},
+	{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	10},
+	{0x73,				0xfd,	0xff,	100},
+	{-1,				-1,	-1,	-1},
+};
+
+/*
+ * 2040:0265 Hauppauge WinTV-dualHD DVB Isoc
+ * 2040:8265 Hauppauge WinTV-dualHD DVB Bulk
+ * 2040:026d Hauppauge WinTV-dualHD ATSC/QAM Isoc
+ * 2040:826d Hauppauge WinTV-dualHD ATSC/QAM Bulk
+ * reg 0x80/0x84:
+ * GPIO_0: Yellow LED tuner 1, 0=on, 1=off
+ * GPIO_1: Green LED tuner 1, 0=on, 1=off
+ * GPIO_2: Yellow LED tuner 2, 0=on, 1=off
+ * GPIO_3: Green LED tuner 2, 0=on, 1=off
+ * GPIO_5: Reset #2, 0=active
+ * GPIO_6: Reset #1, 0=active
+ */
+static const struct em28xx_reg_seq hauppauge_dualhd_dvb[] = {
+	{EM2874_R80_GPIO_P0_CTRL,      0xff, 0xff,      0},
+	{0x0d,                         0xff, 0xff,    200},
+	{0x50,                         0x04, 0xff,    300},
+	{EM2874_R80_GPIO_P0_CTRL,      0xbf, 0xff,    100}, /* demod 1 reset */
+	{EM2874_R80_GPIO_P0_CTRL,      0xff, 0xff,    100},
+	{EM2874_R80_GPIO_P0_CTRL,      0xdf, 0xff,    100}, /* demod 2 reset */
+	{EM2874_R80_GPIO_P0_CTRL,      0xff, 0xff,    100},
+	{EM2874_R5F_TS_ENABLE,         0x00, 0xff,     50}, /* disable TS filters */
+	{EM2874_R5D_TS1_PKT_SIZE,      0x05, 0xff,     50},
+	{EM2874_R5E_TS2_PKT_SIZE,      0x05, 0xff,     50},
+	{-1,                             -1,   -1,     -1},
+};
+
+/*
+ *  Button definitions
+ */
+static const struct em28xx_button std_snapshot_button[] = {
+	{
+		.role         = EM28XX_BUTTON_SNAPSHOT,
+		.reg_r        = EM28XX_R0C_USBSUSP,
+		.reg_clearing = EM28XX_R0C_USBSUSP,
+		.mask         = EM28XX_R0C_USBSUSP_SNAPSHOT,
+		.inverted     = 0,
+	},
+	{-1, 0, 0, 0, 0},
+};
+
+static const struct em28xx_button speedlink_vad_laplace_buttons[] = {
+	{
+		.role     = EM28XX_BUTTON_SNAPSHOT,
+		.reg_r    = EM2874_R85_GPIO_P1_STATE,
+		.mask     = 0x80,
+		.inverted = 1,
+	},
+	{
+		.role     = EM28XX_BUTTON_ILLUMINATION,
+		.reg_r    = EM2874_R84_GPIO_P0_STATE,
+		.mask     = 0x08,
+		.inverted = 1,
+	},
+	{-1, 0, 0, 0, 0},
+};
+
+/*
+ *  LED definitions
+ */
+static struct em28xx_led speedlink_vad_laplace_leds[] = {
+	{
+		.role      = EM28XX_LED_ANALOG_CAPTURING,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = 0x01,
+		.inverted  = 1,
+	},
+	{
+		.role      = EM28XX_LED_ILLUMINATION,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = 0x40,
+		.inverted  = 1,
+	},
+	{-1, 0, 0, 0},
+};
+
+static struct em28xx_led kworld_ub435q_v3_leds[] = {
+	{
+		.role      = EM28XX_LED_DIGITAL_CAPTURING,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = 0x80,
+		.inverted  = 1,
+	},
+	{-1, 0, 0, 0},
+};
+
+static struct em28xx_led pctv_80e_leds[] = {
+	{
+		.role      = EM28XX_LED_DIGITAL_CAPTURING,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = 0x80,
+		.inverted  = 0,
+	},
+	{-1, 0, 0, 0},
+};
+
+static struct em28xx_led terratec_grabby_leds[] = {
+	{
+		.role      = EM28XX_LED_ANALOG_CAPTURING,
+		.gpio_reg  = EM2820_R08_GPIO_CTRL,
+		.gpio_mask = EM_GPIO_3,
+		.inverted  = 1,
+	},
+	{-1, 0, 0, 0},
+};
+
+static struct em28xx_led hauppauge_dualhd_leds[] = {
+	{
+		.role      = EM28XX_LED_DIGITAL_CAPTURING,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = EM_GPIO_1,
+		.inverted  = 1,
+	},
+	{
+		.role      = EM28XX_LED_DIGITAL_CAPTURING_TS2,
+		.gpio_reg  = EM2874_R80_GPIO_P0_CTRL,
+		.gpio_mask = EM_GPIO_3,
+		.inverted  = 1,
+	},
+	{-1, 0, 0, 0},
+};
+
+/*
+ *  Board definitions
+ */
+const struct em28xx_board em28xx_boards[] = {
+	[EM2750_BOARD_UNKNOWN] = {
+		.name          = "EM2710/EM2750/EM2751 webcam grabber",
+		.xclk          = EM28XX_XCLK_FREQUENCY_20MHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.is_webcam     = 1,
+		.input         = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = 0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = silvercrest_reg_seq,
+		} },
+	},
+	[EM2800_BOARD_UNKNOWN] = {
+		.name         = "Unknown EM2800 video grabber",
+		.is_em2800    = 1,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.tuner_type   = TUNER_ABSENT,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_UNKNOWN] = {
+		.name          = "Unknown EM2750/28xx video grabber",
+		.tuner_type    = TUNER_ABSENT,
+		.is_webcam     = 1,	/* To enable sensor probe */
+	},
+	[EM2882_BOARD_ZOLID_HYBRID_TV_STICK] = {
+		.name			= ":ZOLID HYBRID TV STICK",
+		.tuner_type		= TUNER_XC2028,
+		.tuner_gpio		= zolid_tuner,
+		.decoder		= EM28XX_TVP5150,
+		.xclk			= EM28XX_XCLK_FREQUENCY_12MHZ,
+		.mts_firmware	= 1,
+		.has_dvb		= 1,
+		.dvb_gpio		= zolid_digital,
+	},
+	[EM2750_BOARD_DLCW_130] = {
+		/* Beijing Huaqi Information Digital Technology Co., Ltd */
+		.name          = "Huaqi DLCW-130",
+		.valid         = EM28XX_BOARD_NOT_VALIDATED,
+		.xclk          = EM28XX_XCLK_FREQUENCY_48MHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.is_webcam     = 1,
+		.input         = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = 0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		} },
+	},
+	[EM2820_BOARD_KWORLD_PVRTV2800RF] = {
+		.name         = "Kworld PVR TV 2800 RF",
+		.tuner_type   = TUNER_TEMIC_PAL,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_GADMEI_TVR200] = {
+		.name         = "Gadmei TVR200",
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_TERRATEC_CINERGY_250] = {
+		.name         = "Terratec Cinergy 250 USB",
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.has_ir_i2c   = 1,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_PINNACLE_USB_2] = {
+		.name         = "Pinnacle PCTV USB 2",
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.has_ir_i2c   = 1,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_HAUPPAUGE_WINTV_USB_2] = {
+		.name         = "Hauppauge WinTV USB 2",
+		.tuner_type   = TUNER_PHILIPS_FM1236_MK3,
+		.tda9887_conf = TDA9887_PRESENT |
+				TDA9887_PORT1_ACTIVE |
+				TDA9887_PORT2_ACTIVE,
+		.decoder      = EM28XX_TVP5150,
+		.has_msp34xx  = 1,
+		.has_ir_i2c   = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = MSP_INPUT_DEFAULT,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
+					MSP_DSP_IN_SCART, MSP_DSP_IN_SCART),
+		} },
+	},
+	[EM2820_BOARD_DLINK_USB_TV] = {
+		.name         = "D-Link DUB-T210 TV Tuner",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_HERCULES_SMART_TV_USB2] = {
+		.name         = "Hercules Smart TV USB 2.0",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_PINNACLE_USB_2_FM1216ME] = {
+		.name         = "Pinnacle PCTV USB 2 (Philips FM1216ME)",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_PHILIPS_FM1216ME_MK3,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_GADMEI_UTV310] = {
+		.name         = "Gadmei UTV310",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_TNF_5335MF,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE] = {
+		.name         = "Leadtek Winfast USB II Deluxe",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_PHILIPS_FM1216ME_MK3,
+		.has_ir_i2c   = 1,
+		.tvaudio_addr = 0x58,
+		.tda9887_conf = TDA9887_PRESENT |
+				TDA9887_PORT2_ACTIVE |
+				TDA9887_QSS,
+		.decoder      = EM28XX_SAA711X,
+		.adecoder     = EM28XX_TVAUDIO,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE4,
+			.amux     = EM28XX_AMUX_AUX,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE5,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+			.radio	  = {
+			.type     = EM28XX_RADIO,
+			.amux     = EM28XX_AMUX_AUX,
+			}
+	},
+	[EM2820_BOARD_VIDEOLOGY_20K14XUSB] = {
+		.name         = "Videology 20K14XUSB USB2.0",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT,
+		.is_webcam    = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = 0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		} },
+	},
+	[EM2820_BOARD_SILVERCREST_WEBCAM] = {
+		.name         = "Silvercrest Webcam 1.3mpix",
+		.tuner_type   = TUNER_ABSENT,
+		.is_webcam    = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = 0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = silvercrest_reg_seq,
+		} },
+	},
+	[EM2821_BOARD_SUPERCOMP_USB_2] = {
+		.name         = "Supercomp USB 2.0 TV",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_PHILIPS_FM1236_MK3,
+		.tda9887_conf = TDA9887_PRESENT |
+				TDA9887_PORT1_ACTIVE |
+				TDA9887_PORT2_ACTIVE,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2821_BOARD_USBGEAR_VD204] = {
+		.name         = "Usbgear VD204v9",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT,	/* Capture only device */
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type  = EM28XX_VMUX_COMPOSITE,
+			.vmux  = SAA7115_COMPOSITE0,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type  = EM28XX_VMUX_SVIDEO,
+			.vmux  = SAA7115_SVIDEO3,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2860_BOARD_NETGMBH_CAM] = {
+		/* Beijing Huaqi Information Digital Technology Co., Ltd */
+		.name         = "NetGMBH Cam",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT,
+		.is_webcam    = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = 0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		} },
+	},
+	[EM2860_BOARD_TYPHOON_DVD_MAKER] = {
+		.name         = "Typhoon DVD Maker",
+		.decoder      = EM28XX_SAA711X,
+		.tuner_type   = TUNER_ABSENT,	/* Capture only device */
+		.input        = { {
+			.type  = EM28XX_VMUX_COMPOSITE,
+			.vmux  = SAA7115_COMPOSITE0,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type  = EM28XX_VMUX_SVIDEO,
+			.vmux  = SAA7115_SVIDEO3,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2860_BOARD_GADMEI_UTV330] = {
+		.name         = "Gadmei UTV330",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_TNF_5335MF,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2861_BOARD_GADMEI_UTV330PLUS] = {
+		.name         = "Gadmei UTV330+",
+		.tuner_type   = TUNER_TNF_5335MF,
+		.tda9887_conf = TDA9887_PRESENT,
+		.ir_codes     = RC_MAP_GADMEI_RM008Z,
+		.decoder      = EM28XX_SAA711X,
+		.xclk         = EM28XX_XCLK_FREQUENCY_12MHZ,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2860_BOARD_TERRATEC_HYBRID_XS] = {
+		.name         = "Terratec Cinergy A Hybrid XS",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2861_BOARD_KWORLD_PVRTV_300U] = {
+		.name	      = "KWorld PVRTV 300U",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2861_BOARD_YAKUMO_MOVIE_MIXER] = {
+		.name          = "Yakumo MovieMixer",
+		.tuner_type    = TUNER_ABSENT,	/* Capture only device */
+		.decoder       = EM28XX_TVP5150,
+		.input         = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2860_BOARD_TVP5150_REFERENCE_DESIGN] = {
+		.name          = "EM2860/TVP5150 Reference Design",
+		.tuner_type    = TUNER_ABSENT,	/* Capture only device */
+		.decoder       = EM28XX_TVP5150,
+		.input         = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2861_BOARD_PLEXTOR_PX_TV100U] = {
+		.name         = "Plextor ConvertX PX-TV100U",
+		.tuner_type   = TUNER_TNF_5335MF,
+		.xclk         = EM28XX_XCLK_I2S_MSB_TIMING |
+				EM28XX_XCLK_FREQUENCY_12MHZ,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_TVP5150,
+		.has_msp34xx  = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		} },
+	},
+
+	/* Those boards with em2870 are DVB Only*/
+
+	[EM2870_BOARD_TERRATEC_XS] = {
+		.name         = "Terratec Cinergy T XS",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+	},
+	[EM2870_BOARD_TERRATEC_XS_MT2060] = {
+		.name         = "Terratec Cinergy T XS (MT2060)",
+		.xclk         = EM28XX_XCLK_IR_RC5_MODE |
+				EM28XX_XCLK_FREQUENCY_12MHZ,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE,
+		.tuner_type   = TUNER_ABSENT, /* MT2060 */
+		.has_dvb      = 1,
+		.tuner_gpio   = default_tuner_gpio,
+	},
+	[EM2870_BOARD_KWORLD_350U] = {
+		.name         = "Kworld 350 U DVB-T",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+	},
+	[EM2870_BOARD_KWORLD_355U] = {
+		.name         = "Kworld 355 U DVB-T",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT,
+		.tuner_gpio   = default_tuner_gpio,
+		.has_dvb      = 1,
+		.dvb_gpio     = default_digital,
+	},
+	[EM2870_BOARD_PINNACLE_PCTV_DVB] = {
+		.name         = "Pinnacle PCTV DVB-T",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT, /* MT2060 */
+		/* djh - I have serious doubts this is right... */
+		.xclk         = EM28XX_XCLK_IR_RC5_MODE |
+				EM28XX_XCLK_FREQUENCY_10MHZ,
+	},
+	[EM2870_BOARD_COMPRO_VIDEOMATE] = {
+		.name         = "Compro, VideoMate U3",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_ABSENT, /* MT2060 */
+	},
+
+	[EM2880_BOARD_TERRATEC_HYBRID_XS_FR] = {
+		.name         = "Terratec Hybrid XS Secam",
+		.has_msp34xx  = 1,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.has_dvb      = 1,
+		.dvb_gpio     = terratec_cinergy_USB_XS_FR_digital,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = terratec_cinergy_USB_XS_FR_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = terratec_cinergy_USB_XS_FR_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = terratec_cinergy_USB_XS_FR_analog,
+		} },
+	},
+	[EM2884_BOARD_TERRATEC_H5] = {
+		.name         = "Terratec Cinergy H5",
+		.has_dvb      = 1,
+#if 0
+		.tuner_type   = TUNER_PHILIPS_TDA8290,
+		.tuner_addr   = 0x41,
+		.dvb_gpio     = terratec_h5_digital, /* FIXME: probably wrong */
+		.tuner_gpio   = terratec_h5_gpio,
+#else
+		.tuner_type   = TUNER_ABSENT,
+#endif
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2884_BOARD_TERRATEC_H6] = {
+		.name         = "Terratec Cinergy H6 rev. 2",
+		.has_dvb      = 1,
+		.ir_codes     = RC_MAP_NEC_TERRATEC_CINERGY_XS,
+#if 0
+		.tuner_type   = TUNER_PHILIPS_TDA8290,
+		.tuner_addr   = 0x41,
+		.dvb_gpio     = terratec_h5_digital, /* FIXME: probably wrong */
+		.tuner_gpio   = terratec_h5_gpio,
+#else
+		.tuner_type   = TUNER_ABSENT,
+#endif
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C] = {
+		.name         = "Hauppauge WinTV HVR 930C",
+		.has_dvb      = 1,
+#if 0 /* FIXME: Add analog support */
+		.tuner_type   = TUNER_XC5000,
+		.tuner_addr   = 0x41,
+		.dvb_gpio     = hauppauge_930c_digital,
+		.tuner_gpio   = hauppauge_930c_gpio,
+#else
+		.tuner_type   = TUNER_ABSENT,
+#endif
+		.ir_codes     = RC_MAP_HAUPPAUGE,
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2884_BOARD_C3TECH_DIGITAL_DUO] = {
+		.name         = "C3 Tech Digital Duo HDTV/SDTV USB",
+		.has_dvb      = 1,
+		/* FIXME: Add analog support - need a saa7136 driver */
+		.tuner_type = TUNER_ABSENT,	/* Digital-only TDA18271HD */
+		.ir_codes     = RC_MAP_EMPTY,
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE,
+		.dvb_gpio     = c3tech_digital_duo_digital,
+	},
+	[EM2884_BOARD_CINERGY_HTC_STICK] = {
+		.name         = "Terratec Cinergy HTC Stick",
+		.has_dvb      = 1,
+		.ir_codes     = RC_MAP_NEC_TERRATEC_CINERGY_XS,
+		.tuner_type   = TUNER_ABSENT,
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2884_BOARD_ELGATO_EYETV_HYBRID_2008] = {
+		.name         = "Elgato EyeTV Hybrid 2008 INT",
+		.has_dvb      = 1,
+		.ir_codes     = RC_MAP_NEC_TERRATEC_CINERGY_XS,
+		.tuner_type   = TUNER_ABSENT,
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900] = {
+		.name         = "Hauppauge WinTV HVR 900",
+		.tda9887_conf = TDA9887_PRESENT,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = hauppauge_wintv_hvr_900_digital,
+		.ir_codes     = RC_MAP_HAUPPAUGE,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2] = {
+		.name         = "Hauppauge WinTV HVR 900 (R2)",
+		.tda9887_conf = TDA9887_PRESENT,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = hauppauge_wintv_hvr_900R2_digital,
+		.ir_codes     = RC_MAP_HAUPPAUGE,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850] = {
+		.name           = "Hauppauge WinTV HVR 850",
+		.tuner_type     = TUNER_XC2028,
+		.tuner_gpio     = default_tuner_gpio,
+		.mts_firmware   = 1,
+		.has_dvb        = 1,
+		.dvb_gpio       = hauppauge_wintv_hvr_900_digital,
+		.ir_codes       = RC_MAP_HAUPPAUGE,
+		.decoder        = EM28XX_TVP5150,
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950] = {
+		.name           = "Hauppauge WinTV HVR 950",
+		.tuner_type     = TUNER_XC2028,
+		.tuner_gpio     = default_tuner_gpio,
+		.mts_firmware   = 1,
+		.has_dvb        = 1,
+		.dvb_gpio       = hauppauge_wintv_hvr_900_digital,
+		.ir_codes       = RC_MAP_HAUPPAUGE,
+		.decoder        = EM28XX_TVP5150,
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2880_BOARD_PINNACLE_PCTV_HD_PRO] = {
+		.name           = "Pinnacle PCTV HD Pro Stick",
+		.tuner_type     = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.mts_firmware   = 1,
+		.has_dvb        = 1,
+		.dvb_gpio       = hauppauge_wintv_hvr_900_digital,
+		.ir_codes       = RC_MAP_PINNACLE_PCTV_HD,
+		.decoder        = EM28XX_TVP5150,
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600] = {
+		.name           = "AMD ATI TV Wonder HD 600",
+		.tuner_type     = TUNER_XC2028,
+		.tuner_gpio     = default_tuner_gpio,
+		.mts_firmware   = 1,
+		.has_dvb        = 1,
+		.dvb_gpio       = hauppauge_wintv_hvr_900_digital,
+		.ir_codes       = RC_MAP_ATI_TV_WONDER_HD_600,
+		.decoder        = EM28XX_TVP5150,
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2880_BOARD_TERRATEC_HYBRID_XS] = {
+		.name           = "Terratec Hybrid XS",
+		.tuner_type     = TUNER_XC2028,
+		.tuner_gpio     = default_tuner_gpio,
+		.decoder        = EM28XX_TVP5150,
+		.has_dvb        = 1,
+		.dvb_gpio       = default_digital,
+		.ir_codes       = RC_MAP_TERRATEC_CINERGY_XS,
+		.xclk           = EM28XX_XCLK_FREQUENCY_12MHZ, /* NEC IR */
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = default_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		} },
+	},
+	/*
+	 * maybe there's a reason behind it why Terratec sells the Hybrid XS
+	 * as Prodigy XS with a different PID, let's keep it separated for now
+	 * maybe we'll need it later on
+	 */
+	[EM2880_BOARD_TERRATEC_PRODIGY_XS] = {
+		.name         = "Terratec Prodigy XS",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2820_BOARD_MSI_VOX_USB_2] = {
+		.name		   = "MSI VOX USB 2.0",
+		.tuner_type	   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf	   = TDA9887_PRESENT      |
+				     TDA9887_PORT1_ACTIVE |
+				     TDA9887_PORT2_ACTIVE,
+		.max_range_640_480 = 1,
+		.decoder           = EM28XX_SAA711X,
+		.input             = { {
+			.type      = EM28XX_VMUX_TELEVISION,
+			.vmux      = SAA7115_COMPOSITE4,
+			.amux      = EM28XX_AMUX_VIDEO,
+		}, {
+			.type      = EM28XX_VMUX_COMPOSITE,
+			.vmux      = SAA7115_COMPOSITE0,
+			.amux      = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type      = EM28XX_VMUX_SVIDEO,
+			.vmux      = SAA7115_SVIDEO3,
+			.amux      = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2800_BOARD_TERRATEC_CINERGY_200] = {
+		.name         = "Terratec Cinergy 200 USB",
+		.is_em2800    = 1,
+		.has_ir_i2c   = 1,
+		.tuner_type   = TUNER_LG_TALN,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2800_BOARD_GRABBEEX_USB2800] = {
+		.name       = "eMPIA Technology, Inc. GrabBeeX+ Video Encoder",
+		.is_em2800  = 1,
+		.decoder    = EM28XX_SAA711X,
+		.tuner_type = TUNER_ABSENT, /* capture only board */
+		.input      = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2800_BOARD_VC211A] = {
+		.name         = "Actionmaster/LinXcel/Digitus VC211A",
+		.is_em2800    = 1,
+		.tuner_type   = TUNER_ABSENT,	/* Capture-only board */
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = vc211a_enable,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = vc211a_enable,
+		} },
+	},
+	[EM2800_BOARD_LEADTEK_WINFAST_USBII] = {
+		.name         = "Leadtek Winfast USB II",
+		.is_em2800    = 1,
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2800_BOARD_KWORLD_USB2800] = {
+		.name         = "Kworld USB2800",
+		.is_em2800    = 1,
+		.tuner_type   = TUNER_PHILIPS_FCV1236D,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_PINNACLE_DVC_90] = {
+		.name	      = "Pinnacle Dazzle DVC 90/100/101/107 / Kaiser Baas Video to DVD maker / Kworld DVD Maker 2 / Plextor ConvertX PX-AV100U",
+		.tuner_type   = TUNER_ABSENT, /* capture only board */
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2800_BOARD_VGEAR_POCKETTV] = {
+		.name         = "V-Gear PocketTV",
+		.is_em2800    = 1,
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2] = {
+		.name         = "Pixelview PlayTV Box 4 USB 2.0",
+		.tda9887_conf = TDA9887_PRESENT,
+		.tuner_type   = TUNER_YMEC_TVF_5533MF,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.aout     = EM28XX_AOUT_MONO |	/* I2S */
+				    EM28XX_AOUT_MASTER,	/* Line out pin */
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_PROLINK_PLAYTV_USB2] = {
+		.name         = "SIIG AVTuner-PVR / Pixelview Prolink PlayTV USB 2.0",
+		.buttons = std_snapshot_button,
+		.tda9887_conf = TDA9887_PRESENT,
+		.tuner_type   = TUNER_YMEC_TVF_5533MF,
+		.tuner_addr   = 0x60,
+		.decoder      = EM28XX_SAA711X,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = SAA7115_COMPOSITE2,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.aout     = EM28XX_AOUT_MONO |	/* I2S */
+				    EM28XX_AOUT_MASTER,	/* Line out pin */
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2860_BOARD_SAA711X_REFERENCE_DESIGN] = {
+		.name                = "EM2860/SAA711X Reference Design",
+		.buttons = std_snapshot_button,
+		.tuner_type          = TUNER_ABSENT,
+		.decoder             = EM28XX_SAA711X,
+		.input               = { {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+		} },
+	},
+
+	[EM2874_BOARD_LEADERSHIP_ISDBT] = {
+		.def_i2c_bus	= 1,
+		.i2c_speed      = EM28XX_I2C_CLK_WAIT_ENABLE |
+				  EM28XX_I2C_FREQ_100_KHZ,
+		.xclk		= EM28XX_XCLK_FREQUENCY_10MHZ,
+		.name		= "EM2874 Leadership ISDBT",
+		.tuner_type	= TUNER_ABSENT,
+		.tuner_gpio     = leadership_reset,
+		.dvb_gpio       = leadership_digital,
+		.has_dvb	= 1,
+	},
+
+	[EM2880_BOARD_MSI_DIGIVOX_AD] = {
+		.name         = "MSI DigiVox A/D",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		} },
+	},
+	[EM2880_BOARD_MSI_DIGIVOX_AD_II] = {
+		.name         = "MSI DigiVox A/D II",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = em2880_msi_digivox_ad_analog,
+		} },
+	},
+	[EM2880_BOARD_KWORLD_DVB_305U] = {
+		.name	      = "KWorld DVB-T 305U",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2880_BOARD_KWORLD_DVB_310U] = {
+		.name	      = "KWorld DVB-T 310U",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.has_dvb      = 1,
+		.dvb_gpio     = default_digital,
+		.mts_firmware = 1,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = default_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		}, {	/* S-video has not been tested yet */
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		} },
+	},
+	[EM2882_BOARD_KWORLD_ATSC_315U] = {
+		.name		= "KWorld ATSC 315U HDTV TV Box",
+		.valid		= EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type	= TUNER_THOMSON_DTT761X,
+		.tuner_gpio	= em2882_kworld_315u_tuner_gpio,
+		.tda9887_conf	= TDA9887_PRESENT,
+		.decoder	= EM28XX_SAA711X,
+		.has_dvb	= 1,
+		.dvb_gpio	= em2882_kworld_315u_digital,
+		.ir_codes	= RC_MAP_KWORLD_315U,
+		.xclk		= EM28XX_XCLK_FREQUENCY_12MHZ,
+		.i2c_speed	= EM28XX_I2C_CLK_WAIT_ENABLE,
+#if 0
+		/* FIXME: Analog mode - still not ready */
+		.input        = { {
+			.type = EM28XX_VMUX_TELEVISION,
+			.vmux = SAA7115_COMPOSITE2,
+			.amux = EM28XX_AMUX_VIDEO,
+			.gpio = em2882_kworld_315u_analog,
+			.aout = EM28XX_AOUT_PCM_IN | EM28XX_AOUT_PCM_STEREO,
+		}, {
+			.type = EM28XX_VMUX_COMPOSITE,
+			.vmux = SAA7115_COMPOSITE0,
+			.amux = EM28XX_AMUX_LINE_IN,
+			.gpio = em2882_kworld_315u_analog1,
+			.aout = EM28XX_AOUT_PCM_IN | EM28XX_AOUT_PCM_STEREO,
+		}, {
+			.type = EM28XX_VMUX_SVIDEO,
+			.vmux = SAA7115_SVIDEO3,
+			.amux = EM28XX_AMUX_LINE_IN,
+			.gpio = em2882_kworld_315u_analog1,
+			.aout = EM28XX_AOUT_PCM_IN | EM28XX_AOUT_PCM_STEREO,
+		} },
+#endif
+	},
+	[EM2880_BOARD_EMPIRE_DUAL_TV] = {
+		.name = "Empire dual TV",
+		.tuner_type = TUNER_XC2028,
+		.tuner_gpio = default_tuner_gpio,
+		.has_dvb = 1,
+		.dvb_gpio = default_digital,
+		.mts_firmware = 1,
+		.decoder = EM28XX_TVP5150,
+		.input = { {
+			.type = EM28XX_VMUX_TELEVISION,
+			.vmux = TVP5150_COMPOSITE0,
+			.amux = EM28XX_AMUX_VIDEO,
+			.gpio = default_analog,
+		}, {
+			.type = EM28XX_VMUX_COMPOSITE,
+			.vmux = TVP5150_COMPOSITE1,
+			.amux = EM28XX_AMUX_LINE_IN,
+			.gpio = default_analog,
+		}, {
+			.type = EM28XX_VMUX_SVIDEO,
+			.vmux = TVP5150_SVIDEO,
+			.amux = EM28XX_AMUX_LINE_IN,
+			.gpio = default_analog,
+		} },
+	},
+	[EM2881_BOARD_DNT_DA2_HYBRID] = {
+		.name         = "DNT DA2 Hybrid",
+		.valid        = EM28XX_BOARD_NOT_VALIDATED,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = default_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = default_analog,
+		} },
+	},
+	[EM2881_BOARD_PINNACLE_HYBRID_PRO] = {
+		.name         = "Pinnacle Hybrid Pro",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.has_dvb      = 1,
+		.dvb_gpio     = pinnacle_hybrid_pro_digital,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = pinnacle_hybrid_pro_analog,
+		} },
+	},
+	[EM2882_BOARD_PINNACLE_HYBRID_PRO_330E] = {
+		.name         = "Pinnacle Hybrid Pro (330e)",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = hauppauge_wintv_hvr_900R2_digital,
+		.ir_codes     = RC_MAP_PINNACLE_PCTV_HD,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2882_BOARD_KWORLD_VS_DVBT] = {
+		.name         = "Kworld VS-DVB-T 323UR",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = kworld_330u_digital,
+		.xclk         = EM28XX_XCLK_FREQUENCY_12MHZ, /* NEC IR */
+		.ir_codes     = RC_MAP_KWORLD_315U,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2882_BOARD_TERRATEC_HYBRID_XS] = {
+		.name         = "Terratec Cinergy Hybrid T USB XS (em2882)",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.mts_firmware = 1,
+		.decoder      = EM28XX_TVP5150,
+		.has_dvb      = 1,
+		.dvb_gpio     = hauppauge_wintv_hvr_900_digital,
+		.ir_codes     = RC_MAP_TERRATEC_CINERGY_XS,
+		.xclk         = EM28XX_XCLK_FREQUENCY_12MHZ,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = hauppauge_wintv_hvr_900_analog,
+		} },
+	},
+	[EM2882_BOARD_DIKOM_DK300] = {
+		.name         = "Dikom DK300",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = dikom_dk300_digital,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = default_analog,
+		} },
+	},
+	[EM2883_BOARD_KWORLD_HYBRID_330U] = {
+		.name         = "Kworld PlusTV HD Hybrid 330",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = kworld_330u_digital,
+		.xclk             = EM28XX_XCLK_FREQUENCY_12MHZ,
+		.i2c_speed        = EM28XX_I2C_CLK_WAIT_ENABLE |
+				    EM28XX_I2C_EEPROM_ON_BOARD |
+				    EM28XX_I2C_EEPROM_KEY_VALID,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = kworld_330u_analog,
+			.aout     = EM28XX_AOUT_PCM_IN | EM28XX_AOUT_PCM_STEREO,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = kworld_330u_analog,
+			.aout     = EM28XX_AOUT_PCM_IN | EM28XX_AOUT_PCM_STEREO,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = kworld_330u_analog,
+		} },
+	},
+	[EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU] = {
+		.name         = "Compro VideoMate ForYou/Stereo",
+		.tuner_type   = TUNER_LG_PAL_NEW_TAPC,
+		.tvaudio_addr = 0xb0,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_TVP5150,
+		.adecoder     = EM28XX_TVAUDIO,
+		.mute_gpio    = compro_mute_gpio,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = compro_unmute_tv_gpio,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = compro_unmute_svid_gpio,
+		} },
+	},
+	[EM2860_BOARD_KAIOMY_TVNPC_U2] = {
+		.name	      = "Kaiomy TVnPC U2",
+		.vchannels    = 3,
+		.tuner_type   = TUNER_XC2028,
+		.tuner_addr   = 0x61,
+		.mts_firmware = 1,
+		.decoder      = EM28XX_TVP5150,
+		.tuner_gpio   = default_tuner_gpio,
+		.ir_codes     = RC_MAP_KAIOMY,
+		.input          = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+		.radio		= {
+			.type     = EM28XX_RADIO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}
+	},
+	[EM2860_BOARD_EASYCAP] = {
+		.name         = "Easy Cap Capture DC-60",
+		.vchannels    = 2,
+		.tuner_type   = TUNER_ABSENT,
+		.decoder      = EM28XX_SAA711X,
+		.input           = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	[EM2820_BOARD_IODATA_GVMVP_SZ] = {
+		.name       = "IO-DATA GV-MVP/SZ",
+		.tuner_type   = TUNER_PHILIPS_FM1236_MK3,
+		.tuner_gpio   = default_tuner_gpio,
+		.tda9887_conf = TDA9887_PRESENT,
+		.decoder      = EM28XX_TVP5150,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, { /* Composite has not been tested yet */
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_VIDEO,
+		}, { /* S-video has not been tested yet */
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_VIDEO,
+		} },
+	},
+	[EM2860_BOARD_TERRATEC_GRABBY] = {
+		.name            = "Terratec Grabby",
+		.vchannels       = 2,
+		.tuner_type      = TUNER_ABSENT,
+		.decoder         = EM28XX_SAA711X,
+		.xclk            = EM28XX_XCLK_FREQUENCY_12MHZ,
+		.input           = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+		.buttons         = std_snapshot_button,
+		.leds            = terratec_grabby_leds,
+	},
+	[EM2860_BOARD_TERRATEC_AV350] = {
+		.name            = "Terratec AV350",
+		.vchannels       = 2,
+		.tuner_type      = TUNER_ABSENT,
+		.decoder         = EM28XX_TVP5150,
+		.xclk            = EM28XX_XCLK_FREQUENCY_12MHZ,
+		.mute_gpio       = terratec_av350_mute_gpio,
+		.input           = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = terratec_av350_unmute_gpio,
+
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = terratec_av350_unmute_gpio,
+		} },
+	},
+
+	[EM2860_BOARD_ELGATO_VIDEO_CAPTURE] = {
+		.name         = "Elgato Video Capture",
+		.decoder      = EM28XX_SAA711X,
+		.tuner_type   = TUNER_ABSENT,   /* Capture only device */
+		.input        = { {
+			.type  = EM28XX_VMUX_COMPOSITE,
+			.vmux  = SAA7115_COMPOSITE0,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type  = EM28XX_VMUX_SVIDEO,
+			.vmux  = SAA7115_SVIDEO3,
+			.amux  = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+
+	[EM2882_BOARD_EVGA_INDTUBE] = {
+		.name         = "Evga inDtube",
+		.tuner_type   = TUNER_XC2028,
+		.tuner_gpio   = default_tuner_gpio,
+		.decoder      = EM28XX_TVP5150,
+		.xclk         = EM28XX_XCLK_FREQUENCY_12MHZ, /* NEC IR */
+		.mts_firmware = 1,
+		.has_dvb      = 1,
+		.dvb_gpio     = evga_indtube_digital,
+		.ir_codes     = RC_MAP_EVGA_INDTUBE,
+		.input        = { {
+			.type     = EM28XX_VMUX_TELEVISION,
+			.vmux     = TVP5150_COMPOSITE0,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = evga_indtube_analog,
+		}, {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = evga_indtube_analog,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = evga_indtube_analog,
+		} },
+	},
+	/*
+	 * eb1a:2868 Empia EM2870 + Philips CU1216L NIM
+	 * (Philips TDA10023 + Infineon TUA6034)
+	 */
+	[EM2870_BOARD_REDDO_DVB_C_USB_BOX] = {
+		.name          = "Reddo DVB-C USB TV Box",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = reddo_dvb_c_usb_box,
+		.has_dvb       = 1,
+	},
+	/*
+	 * 1b80:a340 - Empia EM2870, NXP TDA18271HD and LG DT3304, sold
+	 * initially as the KWorld PlusTV 340U, then as the UB435-Q.
+	 * Early variants have a TDA18271HD/C1, later ones a TDA18271HD/C2
+	 */
+	[EM2870_BOARD_KWORLD_A340] = {
+		.name       = "KWorld PlusTV 340U or UB435-Q (ATSC)",
+		.tuner_type = TUNER_ABSENT,	/* Digital-only TDA18271HD */
+		.has_dvb    = 1,
+		.dvb_gpio   = kworld_a340_digital,
+		.tuner_gpio = default_tuner_gpio,
+	},
+	/*
+	 * 2013:024f PCTV nanoStick T2 290e.
+	 * Empia EM28174, Sony CXD2820R and NXP TDA18271HD/C2
+	 */
+	[EM28174_BOARD_PCTV_290E] = {
+		.name          = "PCTV nanoStick T2 290e",
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_100_KHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_290e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+	},
+	/*
+	 * 2013:024f PCTV DVB-S2 Stick 460e
+	 * Empia EM28174, NXP TDA10071, Conexant CX24118A and Allegro A8293
+	 */
+	[EM28174_BOARD_PCTV_460E] = {
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.name          = "PCTV DVB-S2 Stick (460e)",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_460e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+	},
+	/*
+	 * eb1a:5006 Honestech VIDBOX NW03
+	 * Empia EM2860, Philips SAA7113, Empia EMP202, No Tuner
+	 */
+	[EM2860_BOARD_HT_VIDBOX_NW03] = {
+		.name                = "Honestech Vidbox NW03",
+		.tuner_type          = TUNER_ABSENT,
+		.decoder             = EM28XX_SAA711X,
+		.input               = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,  /* S-VIDEO needs check */
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	/*
+	 * 1b80:e425 MaxMedia UB425-TC
+	 * Empia EM2874B + Micronas DRX 3913KA2 + NXP TDA18271HDC2
+	 */
+	[EM2874_BOARD_MAXMEDIA_UB425_TC] = {
+		.name          = "MaxMedia UB425-TC",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = maxmedia_ub425_tc,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_REDDO,
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	/*
+	 * 2304:0242 PCTV QuatroStick (510e)
+	 * Empia EM2884 + Micronas DRX 3926K + NXP TDA18271HDC2
+	 */
+	[EM2884_BOARD_PCTV_510E] = {
+		.name          = "PCTV QuatroStick (510e)",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_510e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	/*
+	 * 2013:0251 PCTV QuatroStick nano (520e)
+	 * Empia EM2884 + Micronas DRX 3926K + NXP TDA18271HDC2
+	 */
+	[EM2884_BOARD_PCTV_520E] = {
+		.name          = "PCTV QuatroStick nano (520e)",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_520e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	[EM2884_BOARD_TERRATEC_HTC_USB_XS] = {
+		.name         = "Terratec Cinergy HTC USB XS",
+		.has_dvb      = 1,
+		.ir_codes     = RC_MAP_NEC_TERRATEC_CINERGY_XS,
+		.tuner_type   = TUNER_ABSENT,
+		.def_i2c_bus  = 1,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	/*
+	 * 1b80:e1cc Delock 61959
+	 * Empia EM2874B + Micronas DRX 3913KA2 + NXP TDA18271HDC2
+	 * mostly the same as MaxMedia UB-425-TC but different remote
+	 */
+	[EM2874_BOARD_DELOCK_61959] = {
+		.name          = "Delock 61959",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = maxmedia_ub425_tc,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_DELOCK_61959,
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_400_KHZ,
+	},
+	/*
+	 * 1b80:e346 KWorld USB ATSC TV Stick UB435-Q V2
+	 * Empia EM2874B + LG DT3305 + NXP TDA18271HDC2
+	 */
+	[EM2874_BOARD_KWORLD_UB435Q_V2] = {
+		.name		= "KWorld USB ATSC TV Stick UB435-Q V2",
+		.tuner_type	= TUNER_ABSENT,
+		.has_dvb	= 1,
+		.dvb_gpio	= kworld_a340_digital,
+		.tuner_gpio	= default_tuner_gpio,
+		.def_i2c_bus	= 1,
+	},
+	/*
+	 * 1b80:e34c KWorld USB ATSC TV Stick UB435-Q V3
+	 * Empia EM2874B + LG DT3305 + NXP TDA18271HDC2
+	 */
+	[EM2874_BOARD_KWORLD_UB435Q_V3] = {
+		.name		= "KWorld USB ATSC TV Stick UB435-Q V3",
+		.tuner_type	= TUNER_ABSENT,
+		.has_dvb	= 1,
+		.tuner_gpio	= kworld_ub435q_v3_digital,
+		.def_i2c_bus	= 1,
+		.i2c_speed      = EM28XX_I2C_CLK_WAIT_ENABLE |
+				  EM28XX_I2C_FREQ_100_KHZ,
+		.leds = kworld_ub435q_v3_leds,
+	},
+	[EM2874_BOARD_PCTV_HD_MINI_80E] = {
+		.name         = "Pinnacle PCTV HD Mini",
+		.tuner_type   = TUNER_ABSENT,
+		.has_dvb      = 1,
+		.dvb_gpio     = em2874_pctv_80e_digital,
+		.decoder      = EM28XX_NODECODER,
+		.ir_codes     = RC_MAP_PINNACLE_PCTV_HD,
+		.leds         = pctv_80e_leds,
+	},
+	/*
+	 * 1ae7:9003/9004 SpeedLink Vicious And Devine Laplace webcam
+	 * Empia EM2765 + OmniVision OV2640
+	 */
+	[EM2765_BOARD_SPEEDLINK_VAD_LAPLACE] = {
+		.name         = "SpeedLink Vicious And Devine Laplace webcam",
+		.xclk         = EM28XX_XCLK_FREQUENCY_24MHZ,
+		.i2c_speed    = EM28XX_I2C_CLK_WAIT_ENABLE |
+				EM28XX_I2C_FREQ_100_KHZ,
+		.def_i2c_bus  = 1,
+		.tuner_type   = TUNER_ABSENT,
+		.is_webcam    = 1,
+		.input        = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = speedlink_vad_laplace_reg_seq,
+		} },
+		.buttons = speedlink_vad_laplace_buttons,
+		.leds = speedlink_vad_laplace_leds,
+	},
+	/*
+	 * 2013:0258 PCTV DVB-S2 Stick (461e)
+	 * Empia EM28178, Montage M88DS3103, Montage M88TS2022, Allegro A8293
+	 */
+	[EM28178_BOARD_PCTV_461E] = {
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.name          = "PCTV DVB-S2 Stick (461e)",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_461e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+	},
+	/*
+	 * 2013:0259 PCTV DVB-S2 Stick (461e_v2)
+	 * Empia EM28178, Montage M88DS3103b, Montage M88TS2022, Allegro A8293
+	 */
+	[EM28178_BOARD_PCTV_461E_V2] = {
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.name          = "PCTV DVB-S2 Stick (461e v2)",
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_461e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+	},
+	/*
+	 * 2013:025f PCTV tripleStick (292e).
+	 * Empia EM28178, Silicon Labs Si2168, Silicon Labs Si2157
+	 */
+	[EM28178_BOARD_PCTV_292E] = {
+		.name          = "PCTV tripleStick (292e)",
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = pctv_292e,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_PINNACLE_PCTV_HD,
+	},
+	[EM2861_BOARD_LEADTEK_VC100] = {
+		.name          = "Leadtek VC100",
+		.tuner_type    = TUNER_ABSENT,	/* Capture only device */
+		.decoder       = EM28XX_TVP5150,
+		.input         = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = TVP5150_COMPOSITE1,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = TVP5150_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	/*
+	 * eb1a:8179 Terratec Cinergy T2 Stick HD.
+	 * Empia EM28178, Silicon Labs Si2168, Silicon Labs Si2146
+	 */
+	[EM28178_BOARD_TERRATEC_T2_STICK_HD] = {
+		.name          = "Terratec Cinergy T2 Stick HD",
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = terratec_t2_stick_hd,
+		.has_dvb       = 1,
+		.ir_codes      = RC_MAP_TERRATEC_SLIM_2,
+	},
+
+	/*
+	 * 3275:0085 PLEX PX-BCUD.
+	 * Empia EM28178, TOSHIBA TC90532XBG, Sharp QM1D1C0042
+	 */
+	[EM28178_BOARD_PLEX_PX_BCUD] = {
+		.name          = "PLEX PX-BCUD",
+		.xclk          = EM28XX_XCLK_FREQUENCY_4_3MHZ,
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = plex_px_bcud,
+		.has_dvb       = 1,
+	},
+	/*
+	 * 2040:0265 Hauppauge WinTV-dualHD (DVB version) Isoc.
+	 * 2040:8265 Hauppauge WinTV-dualHD (DVB version) Bulk.
+	 * Empia EM28274, 2x Silicon Labs Si2168, 2x Silicon Labs Si2157
+	 */
+	[EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB] = {
+		.name          = "Hauppauge WinTV-dualHD DVB",
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = hauppauge_dualhd_dvb,
+		.has_dvb       = 1,
+		.has_dual_ts   = 1,
+		.ir_codes      = RC_MAP_HAUPPAUGE,
+		.leds          = hauppauge_dualhd_leds,
+	},
+	/*
+	 * 2040:026d Hauppauge WinTV-dualHD (model 01595 - ATSC/QAM) Isoc.
+	 * 2040:826d Hauppauge WinTV-dualHD (model 01595 - ATSC/QAM) Bulk.
+	 * Empia EM28274, 2x LG LGDT3306A, 2x Silicon Labs Si2157
+	 */
+	[EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595] = {
+		.name          = "Hauppauge WinTV-dualHD 01595 ATSC/QAM",
+		.def_i2c_bus   = 1,
+		.i2c_speed     = EM28XX_I2C_CLK_WAIT_ENABLE |
+				 EM28XX_I2C_FREQ_400_KHZ,
+		.tuner_type    = TUNER_ABSENT,
+		.tuner_gpio    = hauppauge_dualhd_dvb,
+		.has_dvb       = 1,
+		.has_dual_ts   = 1,
+		.ir_codes      = RC_MAP_HAUPPAUGE,
+		.leds          = hauppauge_dualhd_leds,
+	},
+	/*
+	 * 1b80:e349 Magix USB Videowandler-2
+	 * (same chips as Honestech VIDBOX NW03)
+	 * Empia EM2860, Philips SAA7113, Empia EMP202, No Tuner
+	 */
+	[EM2861_BOARD_MAGIX_VIDEOWANDLER2] = {
+		.name                = "Magix USB Videowandler-2",
+		.tuner_type          = TUNER_ABSENT,
+		.decoder             = EM28XX_SAA711X,
+		.input               = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+	/*
+	 * 1f4d:1abe MyGica iGrabber
+	 * (same as several other EM2860 devices)
+	 * Empia EM2860, Philips SAA7113, Empia EMP202, No Tuner
+	 */
+	[EM2860_BOARD_MYGICA_IGRABBER] = {
+		.name         = "MyGica iGrabber",
+		.vchannels    = 2,
+		.tuner_type   = TUNER_ABSENT,
+		.decoder      = EM28XX_SAA711X,
+		.input           = { {
+			.type     = EM28XX_VMUX_COMPOSITE,
+			.vmux     = SAA7115_COMPOSITE0,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		}, {
+			.type     = EM28XX_VMUX_SVIDEO,
+			.vmux     = SAA7115_SVIDEO3,
+			.amux     = EM28XX_AMUX_LINE_IN,
+		} },
+	},
+};
+EXPORT_SYMBOL_GPL(em28xx_boards);
+
+static const unsigned int em28xx_bcount = ARRAY_SIZE(em28xx_boards);
+
+/* table of devices that work with this driver */
+struct usb_device_id em28xx_id_table[] = {
+	{ USB_DEVICE(0xeb1a, 0x2750),
+			.driver_info = EM2750_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2751),
+			.driver_info = EM2750_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2800),
+			.driver_info = EM2800_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2710),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2820),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2821),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2860),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2861),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2862),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2863),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2870),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2881),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2883), /* used by :Zolid Hybrid Tv Stick */
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2868),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2875),
+			.driver_info = EM2820_BOARD_UNKNOWN },
+	{ USB_DEVICE(0xeb1a, 0x2885), /* MSI Digivox Trio */
+			.driver_info = EM2884_BOARD_TERRATEC_H5 },
+	{ USB_DEVICE(0xeb1a, 0xe300),
+			.driver_info = EM2861_BOARD_KWORLD_PVRTV_300U },
+	{ USB_DEVICE(0xeb1a, 0xe303),
+			.driver_info = EM2860_BOARD_KAIOMY_TVNPC_U2 },
+	{ USB_DEVICE(0xeb1a, 0xe305),
+			.driver_info = EM2880_BOARD_KWORLD_DVB_305U },
+	{ USB_DEVICE(0xeb1a, 0xe310),
+			.driver_info = EM2880_BOARD_MSI_DIGIVOX_AD },
+	{ USB_DEVICE(0xeb1a, 0xa313),
+		.driver_info = EM2882_BOARD_KWORLD_ATSC_315U },
+	{ USB_DEVICE(0xeb1a, 0xa316),
+			.driver_info = EM2883_BOARD_KWORLD_HYBRID_330U },
+	{ USB_DEVICE(0xeb1a, 0xe320),
+			.driver_info = EM2880_BOARD_MSI_DIGIVOX_AD_II },
+	{ USB_DEVICE(0xeb1a, 0xe323),
+			.driver_info = EM2882_BOARD_KWORLD_VS_DVBT },
+	{ USB_DEVICE(0xeb1a, 0xe350),
+			.driver_info = EM2870_BOARD_KWORLD_350U },
+	{ USB_DEVICE(0xeb1a, 0xe355),
+			.driver_info = EM2870_BOARD_KWORLD_355U },
+	{ USB_DEVICE(0xeb1a, 0x2801),
+			.driver_info = EM2800_BOARD_GRABBEEX_USB2800 },
+	{ USB_DEVICE(0xeb1a, 0xe357),
+			.driver_info = EM2870_BOARD_KWORLD_355U },
+	{ USB_DEVICE(0xeb1a, 0xe359),
+			.driver_info = EM2870_BOARD_KWORLD_355U },
+	{ USB_DEVICE(0x1b80, 0xe302), /* Kaiser Baas Video to DVD maker */
+			.driver_info = EM2820_BOARD_PINNACLE_DVC_90 },
+	{ USB_DEVICE(0x1b80, 0xe304), /* Kworld DVD Maker 2 */
+			.driver_info = EM2820_BOARD_PINNACLE_DVC_90 },
+	{ USB_DEVICE(0x0ccd, 0x0036),
+			.driver_info = EM2820_BOARD_TERRATEC_CINERGY_250 },
+	{ USB_DEVICE(0x0ccd, 0x004c),
+			.driver_info = EM2880_BOARD_TERRATEC_HYBRID_XS_FR },
+	{ USB_DEVICE(0x0ccd, 0x004f),
+			.driver_info = EM2860_BOARD_TERRATEC_HYBRID_XS },
+	{ USB_DEVICE(0x0ccd, 0x005e),
+			.driver_info = EM2882_BOARD_TERRATEC_HYBRID_XS },
+	{ USB_DEVICE(0x0ccd, 0x0042),
+			.driver_info = EM2882_BOARD_TERRATEC_HYBRID_XS },
+	{ USB_DEVICE(0x0ccd, 0x0043),
+			.driver_info = EM2870_BOARD_TERRATEC_XS_MT2060 },
+	{ USB_DEVICE(0x0ccd, 0x008e),	/* Cinergy HTC USB XS Rev. 1 */
+			.driver_info = EM2884_BOARD_TERRATEC_HTC_USB_XS },
+	{ USB_DEVICE(0x0ccd, 0x00ac),	/* Cinergy HTC USB XS Rev. 2 */
+			.driver_info = EM2884_BOARD_TERRATEC_HTC_USB_XS },
+	{ USB_DEVICE(0x0ccd, 0x10a2),	/* H5 Rev. 1 */
+			.driver_info = EM2884_BOARD_TERRATEC_H5 },
+	{ USB_DEVICE(0x0ccd, 0x10ad),	/* H5 Rev. 2 */
+			.driver_info = EM2884_BOARD_TERRATEC_H5 },
+	{ USB_DEVICE(0x0ccd, 0x10b6),	/* H5 Rev. 3 */
+			.driver_info = EM2884_BOARD_TERRATEC_H5 },
+	{ USB_DEVICE(0x0ccd, 0x10b2),	/* H6 */
+			.driver_info = EM2884_BOARD_TERRATEC_H6 },
+	{ USB_DEVICE(0x0ccd, 0x0084),
+			.driver_info = EM2860_BOARD_TERRATEC_AV350 },
+	{ USB_DEVICE(0x0ccd, 0x0096),
+			.driver_info = EM2860_BOARD_TERRATEC_GRABBY },
+	{ USB_DEVICE(0x0ccd, 0x10AF),
+			.driver_info = EM2860_BOARD_TERRATEC_GRABBY },
+	{ USB_DEVICE(0x0ccd, 0x00b2),
+			.driver_info = EM2884_BOARD_CINERGY_HTC_STICK },
+	{ USB_DEVICE(0x0fd9, 0x0018),
+			.driver_info = EM2884_BOARD_ELGATO_EYETV_HYBRID_2008 },
+	{ USB_DEVICE(0x0fd9, 0x0033),
+			.driver_info = EM2860_BOARD_ELGATO_VIDEO_CAPTURE },
+	{ USB_DEVICE(0x185b, 0x2870),
+			.driver_info = EM2870_BOARD_COMPRO_VIDEOMATE },
+	{ USB_DEVICE(0x185b, 0x2041),
+			.driver_info = EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU },
+	{ USB_DEVICE(0x2040, 0x4200),
+			.driver_info = EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 },
+	{ USB_DEVICE(0x2040, 0x4201),
+			.driver_info = EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 },
+	{ USB_DEVICE(0x2040, 0x6500),
+			.driver_info = EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 },
+	{ USB_DEVICE(0x2040, 0x6502),
+			.driver_info = EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 },
+	{ USB_DEVICE(0x2040, 0x6513), /* HCW HVR-980 */
+			.driver_info = EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 },
+	{ USB_DEVICE(0x2040, 0x6517), /* HP  HVR-950 */
+			.driver_info = EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 },
+	{ USB_DEVICE(0x2040, 0x651b), /* RP  HVR-950 */
+			.driver_info = EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 },
+	{ USB_DEVICE(0x2040, 0x651f),
+			.driver_info = EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 },
+	{ USB_DEVICE(0x2040, 0x0265),
+			.driver_info = EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB },
+	{ USB_DEVICE(0x2040, 0x8265),
+			.driver_info = EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB },
+	{ USB_DEVICE(0x2040, 0x026d),
+			.driver_info = EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595 },
+	{ USB_DEVICE(0x2040, 0x826d),
+			.driver_info = EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595 },
+	{ USB_DEVICE(0x0438, 0xb002),
+			.driver_info = EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 },
+	{ USB_DEVICE(0x2001, 0xf112),
+			.driver_info = EM2820_BOARD_DLINK_USB_TV },
+	{ USB_DEVICE(0x2304, 0x0207),
+			.driver_info = EM2820_BOARD_PINNACLE_DVC_90 },
+	{ USB_DEVICE(0x2304, 0x0208),
+			.driver_info = EM2820_BOARD_PINNACLE_USB_2 },
+	{ USB_DEVICE(0x2304, 0x021a),
+			.driver_info = EM2820_BOARD_PINNACLE_DVC_90 },
+	{ USB_DEVICE(0x2304, 0x0226),
+			.driver_info = EM2882_BOARD_PINNACLE_HYBRID_PRO_330E },
+	{ USB_DEVICE(0x2304, 0x0227),
+			.driver_info = EM2880_BOARD_PINNACLE_PCTV_HD_PRO },
+	{ USB_DEVICE(0x2304, 0x023f),
+			.driver_info = EM2874_BOARD_PCTV_HD_MINI_80E },
+	{ USB_DEVICE(0x0413, 0x6023),
+			.driver_info = EM2800_BOARD_LEADTEK_WINFAST_USBII },
+	{ USB_DEVICE(0x093b, 0xa003),
+		       .driver_info = EM2820_BOARD_PINNACLE_DVC_90 },
+	{ USB_DEVICE(0x093b, 0xa005),
+			.driver_info = EM2861_BOARD_PLEXTOR_PX_TV100U },
+	{ USB_DEVICE(0x04bb, 0x0515),
+			.driver_info = EM2820_BOARD_IODATA_GVMVP_SZ },
+	{ USB_DEVICE(0xeb1a, 0x50a6),
+			.driver_info = EM2860_BOARD_GADMEI_UTV330 },
+	{ USB_DEVICE(0x1b80, 0xa340),
+			.driver_info = EM2870_BOARD_KWORLD_A340 },
+	{ USB_DEVICE(0x1b80, 0xe346),
+			.driver_info = EM2874_BOARD_KWORLD_UB435Q_V2 },
+	{ USB_DEVICE(0x1b80, 0xe34c),
+			.driver_info = EM2874_BOARD_KWORLD_UB435Q_V3 },
+	{ USB_DEVICE(0x2013, 0x024f),
+			.driver_info = EM28174_BOARD_PCTV_290E },
+	{ USB_DEVICE(0x2013, 0x024c),
+			.driver_info = EM28174_BOARD_PCTV_460E },
+	{ USB_DEVICE(0x2040, 0x1605),
+			.driver_info = EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C },
+	{ USB_DEVICE(0x1b80, 0xe755),
+			.driver_info = EM2884_BOARD_C3TECH_DIGITAL_DUO },
+	{ USB_DEVICE(0xeb1a, 0x5006),
+			.driver_info = EM2860_BOARD_HT_VIDBOX_NW03 },
+	{ USB_DEVICE(0x1b80, 0xe309), /* Sveon STV40 */
+			.driver_info = EM2860_BOARD_EASYCAP },
+	{ USB_DEVICE(0x1b80, 0xe425),
+			.driver_info = EM2874_BOARD_MAXMEDIA_UB425_TC },
+	{ USB_DEVICE(0x1f4d, 0x1abe),
+			.driver_info = EM2860_BOARD_MYGICA_IGRABBER },
+	{ USB_DEVICE(0x2304, 0x0242),
+			.driver_info = EM2884_BOARD_PCTV_510E },
+	{ USB_DEVICE(0x2013, 0x0251),
+			.driver_info = EM2884_BOARD_PCTV_520E },
+	{ USB_DEVICE(0x1b80, 0xe1cc),
+			.driver_info = EM2874_BOARD_DELOCK_61959 },
+	{ USB_DEVICE(0x1ae7, 0x9003),
+			.driver_info = EM2765_BOARD_SPEEDLINK_VAD_LAPLACE },
+	{ USB_DEVICE(0x1ae7, 0x9004),
+			.driver_info = EM2765_BOARD_SPEEDLINK_VAD_LAPLACE },
+	{ USB_DEVICE(0x2013, 0x0258),
+			.driver_info = EM28178_BOARD_PCTV_461E },
+	{ USB_DEVICE(0x2013, 0x0461),
+			.driver_info = EM28178_BOARD_PCTV_461E_V2 },
+	{ USB_DEVICE(0x2013, 0x0259),
+			.driver_info = EM28178_BOARD_PCTV_461E_V2 },
+	{ USB_DEVICE(0x2013, 0x025f),
+			.driver_info = EM28178_BOARD_PCTV_292E },
+	{ USB_DEVICE(0x2013, 0x0264), /* Hauppauge WinTV-soloHD 292e SE */
+			.driver_info = EM28178_BOARD_PCTV_292E },
+	{ USB_DEVICE(0x2040, 0x0264), /* Hauppauge WinTV-soloHD Isoc */
+			.driver_info = EM28178_BOARD_PCTV_292E },
+	{ USB_DEVICE(0x2040, 0x8264), /* Hauppauge OEM Generic WinTV-soloHD Bulk */
+			.driver_info = EM28178_BOARD_PCTV_292E },
+	{ USB_DEVICE(0x2040, 0x8268), /* Hauppauge Retail WinTV-soloHD Bulk */
+			.driver_info = EM28178_BOARD_PCTV_292E },
+	{ USB_DEVICE(0x0413, 0x6f07),
+			.driver_info = EM2861_BOARD_LEADTEK_VC100 },
+	{ USB_DEVICE(0xeb1a, 0x8179),
+			.driver_info = EM28178_BOARD_TERRATEC_T2_STICK_HD },
+	{ USB_DEVICE(0x3275, 0x0085),
+			.driver_info = EM28178_BOARD_PLEX_PX_BCUD },
+	{ USB_DEVICE(0xeb1a, 0x5051), /* Ion Video 2 PC MKII / Startech svid2usb23 / Raygo R12-41373 */
+			.driver_info = EM2860_BOARD_TVP5150_REFERENCE_DESIGN },
+	{ USB_DEVICE(0x1b80, 0xe349), /* Magix USB Videowandler-2 */
+		.driver_info = EM2861_BOARD_MAGIX_VIDEOWANDLER2 },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, em28xx_id_table);
+
+/*
+ * EEPROM hash table for devices with generic USB IDs
+ */
+static const struct em28xx_hash_table em28xx_eeprom_hash[] = {
+	/* P/N: SA 60002070465 Tuner: TVF7533-MF */
+	{0x6ce05a8f, EM2820_BOARD_PROLINK_PLAYTV_USB2, TUNER_YMEC_TVF_5533MF},
+	{0x72cc5a8b, EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2, TUNER_YMEC_TVF_5533MF},
+	{0x966a0441, EM2880_BOARD_KWORLD_DVB_310U, TUNER_XC2028},
+	{0x166a0441, EM2880_BOARD_EMPIRE_DUAL_TV, TUNER_XC2028},
+	{0xcee44a99, EM2882_BOARD_EVGA_INDTUBE, TUNER_XC2028},
+	{0xb8846b20, EM2881_BOARD_PINNACLE_HYBRID_PRO, TUNER_XC2028},
+	{0x63f653bd, EM2870_BOARD_REDDO_DVB_C_USB_BOX, TUNER_ABSENT},
+	{0x4e913442, EM2882_BOARD_DIKOM_DK300, TUNER_XC2028},
+	{0x85dd871e, EM2882_BOARD_ZOLID_HYBRID_TV_STICK, TUNER_XC2028},
+};
+
+/* I2C devicelist hash table for devices with generic USB IDs */
+static const struct em28xx_hash_table em28xx_i2c_hash[] = {
+	{0xb06a32c3, EM2800_BOARD_TERRATEC_CINERGY_200, TUNER_LG_PAL_NEW_TAPC},
+	{0xf51200e3, EM2800_BOARD_VGEAR_POCKETTV, TUNER_LG_PAL_NEW_TAPC},
+	{0x1ba50080, EM2860_BOARD_SAA711X_REFERENCE_DESIGN, TUNER_ABSENT},
+	{0x77800080, EM2860_BOARD_TVP5150_REFERENCE_DESIGN, TUNER_ABSENT},
+	{0xc51200e3, EM2820_BOARD_GADMEI_TVR200, TUNER_LG_PAL_NEW_TAPC},
+	{0x4ba50080, EM2861_BOARD_GADMEI_UTV330PLUS, TUNER_TNF_5335MF},
+	{0x6b800080, EM2874_BOARD_LEADERSHIP_ISDBT, TUNER_ABSENT},
+	{0x27e10080, EM2882_BOARD_ZOLID_HYBRID_TV_STICK, TUNER_XC2028},
+};
+
+/* NOTE: introduce a separate hash table for devices with 16 bit eeproms */
+
+int em28xx_tuner_callback(void *ptr, int component, int command, int arg)
+{
+	struct em28xx_i2c_bus *i2c_bus = ptr;
+	struct em28xx *dev = i2c_bus->dev;
+	int rc = 0;
+
+	if (dev->tuner_type != TUNER_XC2028 && dev->tuner_type != TUNER_XC5000)
+		return 0;
+
+	if (command != XC2028_TUNER_RESET && command != XC5000_TUNER_RESET)
+		return 0;
+
+	rc = em28xx_gpio_set(dev, dev->board.tuner_gpio);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(em28xx_tuner_callback);
+
+static inline void em28xx_set_xclk_i2c_speed(struct em28xx *dev)
+{
+	const struct em28xx_board *board = &em28xx_boards[dev->model];
+	u8 xclk = board->xclk, i2c_speed = board->i2c_speed;
+
+	/*
+	 * Those are the default values for the majority of boards
+	 * Use those values if not specified otherwise at boards entry
+	 */
+	if (!xclk)
+		xclk = EM28XX_XCLK_IR_RC5_MODE |
+		       EM28XX_XCLK_FREQUENCY_12MHZ;
+
+	em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk);
+
+	if (!i2c_speed)
+		i2c_speed = EM28XX_I2C_CLK_WAIT_ENABLE |
+			    EM28XX_I2C_FREQ_100_KHZ;
+
+	dev->i2c_speed = i2c_speed & 0x03;
+
+	if (!dev->board.is_em2800)
+		em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, i2c_speed);
+	msleep(50);
+}
+
+static inline void em28xx_set_model(struct em28xx *dev)
+{
+	dev->board = em28xx_boards[dev->model];
+	dev->has_msp34xx = dev->board.has_msp34xx;
+	dev->is_webcam = dev->board.is_webcam;
+
+	em28xx_set_xclk_i2c_speed(dev);
+
+	/* Should be initialized early, for I2C to work */
+	dev->def_i2c_bus = dev->board.def_i2c_bus;
+}
+
+/*
+ * Wait until AC97_RESET reports the expected value reliably before proceeding.
+ * We also check that two unrelated registers accesses don't return the same
+ * value to avoid premature return.
+ * This procedure helps ensuring AC97 register accesses are reliable.
+ */
+static int em28xx_wait_until_ac97_features_equals(struct em28xx *dev,
+						  int expected_feat)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(2000);
+	int feat, powerdown;
+
+	while (time_is_after_jiffies(timeout)) {
+		feat = em28xx_read_ac97(dev, AC97_RESET);
+		if (feat < 0)
+			return feat;
+
+		powerdown = em28xx_read_ac97(dev, AC97_POWERDOWN);
+		if (powerdown < 0)
+			return powerdown;
+
+		if (feat == expected_feat && feat != powerdown)
+			return 0;
+
+		msleep(50);
+	}
+
+	dev_warn(&dev->intf->dev, "AC97 registers access is not reliable !\n");
+	return -ETIMEDOUT;
+}
+
+/*
+ * Since em28xx_pre_card_setup() requires a proper dev->model,
+ * this won't work for boards with generic PCI IDs
+ */
+static void em28xx_pre_card_setup(struct em28xx *dev)
+{
+	/*
+	 * Set the initial XCLK and I2C clock values based on the board
+	 * definition
+	 */
+	em28xx_set_xclk_i2c_speed(dev);
+
+	/* request some modules */
+	switch (dev->model) {
+	case EM2861_BOARD_PLEXTOR_PX_TV100U:
+		/* Sets the msp34xx I2S speed */
+		dev->i2s_speed = 2048000;
+		break;
+	case EM2861_BOARD_KWORLD_PVRTV_300U:
+	case EM2880_BOARD_KWORLD_DVB_305U:
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0x6d);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0x7d);
+		usleep_range(10000, 11000);
+		break;
+	case EM2870_BOARD_COMPRO_VIDEOMATE:
+		/*
+		 * TODO: someone can do some cleanup here...
+		 *	 not everything's needed
+		 */
+		em28xx_write_reg(dev, EM2880_R04_GPO, 0x00);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2880_R04_GPO, 0x01);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfd);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfc);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xdc);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfc);
+		msleep(70);
+		break;
+	case EM2870_BOARD_TERRATEC_XS_MT2060:
+		/*
+		 * this device needs some gpio writes to get the DVB-T
+		 * demod work
+		 */
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xde);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		msleep(70);
+		break;
+	case EM2870_BOARD_PINNACLE_PCTV_DVB:
+		/*
+		 * this device needs some gpio writes to get the
+		 * DVB-T demod work
+		 */
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xde);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		msleep(70);
+		break;
+	case EM2820_BOARD_GADMEI_UTV310:
+	case EM2820_BOARD_MSI_VOX_USB_2:
+		/* enables audio for that devices */
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfd);
+		break;
+
+	case EM2882_BOARD_KWORLD_ATSC_315U:
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xff);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2880_R04_GPO, 0x00);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2880_R04_GPO, 0x08);
+		usleep_range(10000, 11000);
+		break;
+
+	case EM2860_BOARD_KAIOMY_TVNPC_U2:
+		em28xx_write_regs(dev, EM28XX_R0F_XCLK, "\x07", 1);
+		em28xx_write_regs(dev, EM28XX_R06_I2C_CLK, "\x40", 1);
+		em28xx_write_regs(dev, 0x0d, "\x42", 1);
+		em28xx_write_regs(dev, 0x08, "\xfd", 1);
+		usleep_range(10000, 11000);
+		em28xx_write_regs(dev, 0x08, "\xff", 1);
+		usleep_range(10000, 11000);
+		em28xx_write_regs(dev, 0x08, "\x7f", 1);
+		usleep_range(10000, 11000);
+		em28xx_write_regs(dev, 0x08, "\x6b", 1);
+
+		break;
+	case EM2860_BOARD_EASYCAP:
+		em28xx_write_regs(dev, 0x08, "\xf8", 1);
+		break;
+
+	case EM2820_BOARD_IODATA_GVMVP_SZ:
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xff);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xf7);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe);
+		msleep(70);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfd);
+		msleep(70);
+		break;
+
+	case EM2860_BOARD_TERRATEC_GRABBY:
+		/*
+		 * HACK?: Ensure AC97 register reading is reliable before
+		 * proceeding. In practice, this will wait about 1.6 seconds.
+		 */
+		em28xx_wait_until_ac97_features_equals(dev, 0x6a90);
+		break;
+	}
+
+	em28xx_gpio_set(dev, dev->board.tuner_gpio);
+	em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+
+	/* Unlock device */
+	em28xx_set_mode(dev, EM28XX_SUSPEND);
+}
+
+static int em28xx_hint_board(struct em28xx *dev)
+{
+	int i;
+
+	if (dev->is_webcam) {
+		if (dev->em28xx_sensor == EM28XX_MT9V011) {
+			dev->model = EM2820_BOARD_SILVERCREST_WEBCAM;
+		} else if (dev->em28xx_sensor == EM28XX_MT9M001 ||
+			   dev->em28xx_sensor == EM28XX_MT9M111) {
+			dev->model = EM2750_BOARD_UNKNOWN;
+		}
+		/* FIXME: IMPROVE ! */
+
+		return 0;
+	}
+
+	/*
+	 * HINT method: EEPROM
+	 *
+	 * This method works only for boards with eeprom.
+	 * Uses a hash of all eeprom bytes. The hash should be
+	 * unique for a vendor/tuner pair.
+	 * There are a high chance that tuners for different
+	 * video standards produce different hashes.
+	 */
+	for (i = 0; i < ARRAY_SIZE(em28xx_eeprom_hash); i++) {
+		if (dev->hash == em28xx_eeprom_hash[i].hash) {
+			dev->model = em28xx_eeprom_hash[i].model;
+			dev->tuner_type = em28xx_eeprom_hash[i].tuner;
+
+			dev_err(&dev->intf->dev,
+				"Your board has no unique USB ID.\n"
+				"A hint were successfully done, based on eeprom hash.\n"
+				"This method is not 100%% failproof.\n"
+				"If the board were misdetected, please email this log to:\n"
+				"\tV4L Mailing List  <linux-media@vger.kernel.org>\n"
+				"Board detected as %s\n",
+			       em28xx_boards[dev->model].name);
+
+			return 0;
+		}
+	}
+
+	/*
+	 * HINT method: I2C attached devices
+	 *
+	 * This method works for all boards.
+	 * Uses a hash of i2c scanned devices.
+	 * Devices with the same i2c attached chips will
+	 * be considered equal.
+	 * This method is less precise than the eeprom one.
+	 */
+
+	/* user did not request i2c scanning => do it now */
+	if (!dev->i2c_hash)
+		em28xx_do_i2c_scan(dev, dev->def_i2c_bus);
+
+	for (i = 0; i < ARRAY_SIZE(em28xx_i2c_hash); i++) {
+		if (dev->i2c_hash == em28xx_i2c_hash[i].hash) {
+			dev->model = em28xx_i2c_hash[i].model;
+			dev->tuner_type = em28xx_i2c_hash[i].tuner;
+			dev_err(&dev->intf->dev,
+				"Your board has no unique USB ID.\n"
+				"A hint were successfully done, based on i2c devicelist hash.\n"
+				"This method is not 100%% failproof.\n"
+				"If the board were misdetected, please email this log to:\n"
+				"\tV4L Mailing List  <linux-media@vger.kernel.org>\n"
+				"Board detected as %s\n",
+				em28xx_boards[dev->model].name);
+
+			return 0;
+		}
+	}
+
+	dev_err(&dev->intf->dev,
+		"Your board has no unique USB ID and thus need a hint to be detected.\n"
+		"You may try to use card=<n> insmod option to workaround that.\n"
+		"Please send an email with this log to:\n"
+		"\tV4L Mailing List <linux-media@vger.kernel.org>\n"
+		"Board eeprom hash is 0x%08lx\n"
+		"Board i2c devicelist hash is 0x%08lx\n",
+		dev->hash, dev->i2c_hash);
+
+	dev_err(&dev->intf->dev,
+		"Here is a list of valid choices for the card=<n> insmod option:\n");
+	for (i = 0; i < em28xx_bcount; i++) {
+		dev_err(&dev->intf->dev,
+			"    card=%d -> %s\n", i, em28xx_boards[i].name);
+	}
+	return -1;
+}
+
+static void em28xx_card_setup(struct em28xx *dev)
+{
+	int i, j, idx;
+	bool duplicate_entry;
+
+	/*
+	 * If the device can be a webcam, seek for a sensor.
+	 * If sensor is not found, then it isn't a webcam.
+	 */
+	if (dev->is_webcam) {
+		em28xx_detect_sensor(dev);
+		if (dev->em28xx_sensor == EM28XX_NOSENSOR)
+			/* NOTE: error/unknown sensor/no sensor */
+			dev->is_webcam = 0;
+	}
+
+	switch (dev->model) {
+	case EM2750_BOARD_UNKNOWN:
+	case EM2820_BOARD_UNKNOWN:
+	case EM2800_BOARD_UNKNOWN:
+		/*
+		 * The K-WORLD DVB-T 310U is detected as an MSI Digivox AD.
+		 *
+		 * This occurs because they share identical USB vendor and
+		 * product IDs.
+		 *
+		 * What we do here is look up the EEPROM hash of the K-WORLD
+		 * and if it is found then we decide that we do not have
+		 * a DIGIVOX and reset the device to the K-WORLD instead.
+		 *
+		 * This solution is only valid if they do not share eeprom
+		 * hash identities which has not been determined as yet.
+		 */
+		if (em28xx_hint_board(dev) < 0) {
+			dev_err(&dev->intf->dev, "Board not discovered\n");
+		} else {
+			em28xx_set_model(dev);
+			em28xx_pre_card_setup(dev);
+		}
+		break;
+	default:
+		em28xx_set_model(dev);
+	}
+
+	dev_info(&dev->intf->dev, "Identified as %s (card=%d)\n",
+		 dev->board.name, dev->model);
+
+	dev->tuner_type = em28xx_boards[dev->model].tuner_type;
+
+	/* request some modules */
+	switch (dev->model) {
+	case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
+	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
+	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
+	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595:
+	{
+		struct tveeprom tv;
+
+		if (!dev->eedata)
+			break;
+#if defined(CONFIG_MODULES) && defined(MODULE)
+		request_module("tveeprom");
+#endif
+		/* Call first TVeeprom */
+
+		tveeprom_hauppauge_analog(&tv, dev->eedata);
+
+		dev->tuner_type = tv.tuner_type;
+
+		if (tv.audio_processor == TVEEPROM_AUDPROC_MSP) {
+			dev->i2s_speed = 2048000;
+			dev->has_msp34xx = 1;
+		}
+		break;
+	}
+	case EM2882_BOARD_KWORLD_ATSC_315U:
+		em28xx_write_reg(dev, 0x0d, 0x42);
+		usleep_range(10000, 11000);
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfd);
+		usleep_range(10000, 11000);
+		break;
+	case EM2820_BOARD_KWORLD_PVRTV2800RF:
+		/* GPIO enables sound on KWORLD PVR TV 2800RF */
+		em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xf9);
+		break;
+	case EM2820_BOARD_UNKNOWN:
+	case EM2800_BOARD_UNKNOWN:
+		/*
+		 * The K-WORLD DVB-T 310U is detected as an MSI Digivox AD.
+		 *
+		 * This occurs because they share identical USB vendor and
+		 * product IDs.
+		 *
+		 * What we do here is look up the EEPROM hash of the K-WORLD
+		 * and if it is found then we decide that we do not have
+		 * a DIGIVOX and reset the device to the K-WORLD instead.
+		 *
+		 * This solution is only valid if they do not share eeprom
+		 * hash identities which has not been determined as yet.
+		 */
+	case EM2880_BOARD_MSI_DIGIVOX_AD:
+		if (!em28xx_hint_board(dev))
+			em28xx_set_model(dev);
+
+		/*
+		 * In cases where we had to use a board hint, the call to
+		 * em28xx_set_mode() in em28xx_pre_card_setup() was a no-op,
+		 * so make the call now so the analog GPIOs are set properly
+		 * before probing the i2c bus.
+		 */
+		em28xx_gpio_set(dev, dev->board.tuner_gpio);
+		em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+		break;
+
+		/*
+		 * The Dikom DK300 is detected as an Kworld VS-DVB-T 323UR.
+		 *
+		 * This occurs because they share identical USB vendor and
+		 * product IDs.
+		 *
+		 * What we do here is look up the EEPROM hash of the Dikom
+		 * and if it is found then we decide that we do not have
+		 * a Kworld and reset the device to the Dikom instead.
+		 *
+		 * This solution is only valid if they do not share eeprom
+		 * hash identities which has not been determined as yet.
+		 */
+	case EM2882_BOARD_KWORLD_VS_DVBT:
+		if (!em28xx_hint_board(dev))
+			em28xx_set_model(dev);
+
+		/*
+		 * In cases where we had to use a board hint, the call to
+		 * em28xx_set_mode() in em28xx_pre_card_setup() was a no-op,
+		 * so make the call now so the analog GPIOs are set properly
+		 * before probing the i2c bus.
+		 */
+		em28xx_gpio_set(dev, dev->board.tuner_gpio);
+		em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+		break;
+	}
+
+	if (dev->board.valid == EM28XX_BOARD_NOT_VALIDATED) {
+		dev_err(&dev->intf->dev,
+			"\n\n"
+			"The support for this board weren't valid yet.\n"
+			"Please send a report of having this working\n"
+			"not to V4L mailing list (and/or to other addresses)\n\n");
+	}
+
+	/* Free eeprom data memory */
+	kfree(dev->eedata);
+	dev->eedata = NULL;
+
+	/* Allow override tuner type by a module parameter */
+	if (tuner >= 0)
+		dev->tuner_type = tuner;
+
+	/*
+	 * Dynamically generate a list of valid audio inputs for this
+	 * specific board, mapping them via enum em28xx_amux.
+	 */
+
+	idx = 0;
+	for (i = 0; i < MAX_EM28XX_INPUT; i++) {
+		if (!INPUT(i)->type)
+			continue;
+
+		/* Skip already mapped audio inputs */
+		duplicate_entry = false;
+		for (j = 0; j < idx; j++) {
+			if (INPUT(i)->amux == dev->amux_map[j]) {
+				duplicate_entry = true;
+				break;
+			}
+		}
+		if (duplicate_entry)
+			continue;
+
+		dev->amux_map[idx++] = INPUT(i)->amux;
+	}
+	for (; idx < MAX_EM28XX_INPUT; idx++)
+		dev->amux_map[idx] = EM28XX_AMUX_UNUSED;
+}
+
+void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl)
+{
+	memset(ctl, 0, sizeof(*ctl));
+
+	ctl->fname   = XC2028_DEFAULT_FIRMWARE;
+	ctl->max_len = 64;
+	ctl->mts = em28xx_boards[dev->model].mts_firmware;
+
+	switch (dev->model) {
+	case EM2880_BOARD_EMPIRE_DUAL_TV:
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
+	case EM2882_BOARD_TERRATEC_HYBRID_XS:
+	case EM2880_BOARD_TERRATEC_HYBRID_XS:
+	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
+	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
+	case EM2882_BOARD_ZOLID_HYBRID_TV_STICK:
+		ctl->demod = XC3028_FE_ZARLINK456;
+		break;
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
+	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
+		ctl->demod = XC3028_FE_DEFAULT;
+		break;
+	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
+		ctl->demod = XC3028_FE_DEFAULT;
+		ctl->fname = XC3028L_DEFAULT_FIRMWARE;
+		break;
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
+	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
+		/* FIXME: Better to specify the needed IF */
+		ctl->demod = XC3028_FE_DEFAULT;
+		break;
+	case EM2883_BOARD_KWORLD_HYBRID_330U:
+	case EM2882_BOARD_DIKOM_DK300:
+	case EM2882_BOARD_KWORLD_VS_DVBT:
+		ctl->demod = XC3028_FE_CHINA;
+		ctl->fname = XC2028_DEFAULT_FIRMWARE;
+		break;
+	case EM2882_BOARD_EVGA_INDTUBE:
+		ctl->demod = XC3028_FE_CHINA;
+		ctl->fname = XC3028L_DEFAULT_FIRMWARE;
+		break;
+	default:
+		ctl->demod = XC3028_FE_OREN538;
+	}
+}
+EXPORT_SYMBOL_GPL(em28xx_setup_xc3028);
+
+static void request_module_async(struct work_struct *work)
+{
+	struct em28xx *dev = container_of(work,
+			     struct em28xx, request_module_wk);
+
+	/*
+	 * The em28xx extensions can be modules or builtin. If the
+	 * modules are already loaded or are built in, those extensions
+	 * can be initialised right now. Otherwise, the module init
+	 * code will do it.
+	 */
+
+	/*
+	 * Devices with an audio-only intf also have a V4L/DVB/RC
+	 * intf. Don't register extensions twice on those devices.
+	 */
+	if (dev->is_audio_only) {
+#if defined(CONFIG_MODULES) && defined(MODULE)
+		request_module("em28xx-alsa");
+#endif
+		return;
+	}
+
+	em28xx_init_extension(dev);
+
+#if defined(CONFIG_MODULES) && defined(MODULE)
+	if (dev->has_video)
+		request_module("em28xx-v4l");
+	if (dev->usb_audio_type == EM28XX_USB_AUDIO_CLASS)
+		request_module("snd-usb-audio");
+	else if (dev->usb_audio_type == EM28XX_USB_AUDIO_VENDOR)
+		request_module("em28xx-alsa");
+	if (dev->board.has_dvb)
+		request_module("em28xx-dvb");
+	if (dev->board.buttons ||
+	    ((dev->board.ir_codes || dev->board.has_ir_i2c) && !disable_ir))
+		request_module("em28xx-rc");
+#endif /* CONFIG_MODULES */
+}
+
+static void request_modules(struct em28xx *dev)
+{
+	INIT_WORK(&dev->request_module_wk, request_module_async);
+	schedule_work(&dev->request_module_wk);
+}
+
+static void flush_request_modules(struct em28xx *dev)
+{
+	flush_work(&dev->request_module_wk);
+}
+
+static int em28xx_media_device_init(struct em28xx *dev,
+				    struct usb_device *udev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+	struct media_device *mdev;
+
+	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+	if (!mdev)
+		return -ENOMEM;
+
+	if (udev->product)
+		media_device_usb_init(mdev, udev, udev->product);
+	else if (udev->manufacturer)
+		media_device_usb_init(mdev, udev, udev->manufacturer);
+	else
+		media_device_usb_init(mdev, udev, dev_name(&dev->intf->dev));
+
+	dev->media_dev = mdev;
+#endif
+	return 0;
+}
+
+static void em28xx_unregister_media_device(struct em28xx *dev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+	if (dev->media_dev) {
+		media_device_unregister(dev->media_dev);
+		media_device_cleanup(dev->media_dev);
+		kfree(dev->media_dev);
+		dev->media_dev = NULL;
+	}
+#endif
+}
+
+/*
+ * em28xx_release_resources()
+ * unregisters the v4l2,i2c and usb devices
+ * called when the device gets disconnected or at module unload
+ */
+static void em28xx_release_resources(struct em28xx *dev)
+{
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+
+	/*FIXME: I2C IR should be disconnected */
+
+	mutex_lock(&dev->lock);
+
+	em28xx_unregister_media_device(dev);
+
+	if (dev->def_i2c_bus)
+		em28xx_i2c_unregister(dev, 1);
+	em28xx_i2c_unregister(dev, 0);
+
+	if (dev->ts == PRIMARY_TS)
+		usb_put_dev(udev);
+
+	/* Mark device as unused */
+	clear_bit(dev->devno, em28xx_devused);
+
+	mutex_unlock(&dev->lock);
+};
+
+/**
+ * em28xx_free_device() - Free em28xx device
+ *
+ * @ref: struct kref for em28xx device
+ *
+ * This is called when all extensions and em28xx core unregisters a device
+ */
+void em28xx_free_device(struct kref *ref)
+{
+	struct em28xx *dev = kref_to_dev(ref);
+
+	dev_info(&dev->intf->dev, "Freeing device\n");
+
+	if (!dev->disconnected)
+		em28xx_release_resources(dev);
+
+	if (dev->ts == PRIMARY_TS)
+		kfree(dev->alt_max_pkt_size_isoc);
+
+	kfree(dev);
+}
+EXPORT_SYMBOL_GPL(em28xx_free_device);
+
+/*
+ * em28xx_init_dev()
+ * allocates and inits the device structs, registers i2c bus and v4l device
+ */
+static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
+			   struct usb_interface *intf,
+			   int minor)
+{
+	int retval;
+	const char *chip_name = NULL;
+
+	dev->intf = intf;
+	mutex_init(&dev->ctrl_urb_lock);
+	spin_lock_init(&dev->slock);
+
+	dev->em28xx_write_regs = em28xx_write_regs;
+	dev->em28xx_read_reg = em28xx_read_reg;
+	dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
+	dev->em28xx_write_regs_req = em28xx_write_regs_req;
+	dev->em28xx_read_reg_req = em28xx_read_reg_req;
+	dev->board.is_em2800 = em28xx_boards[dev->model].is_em2800;
+
+	em28xx_set_model(dev);
+
+	dev->wait_after_write = 5;
+
+	/* Based on the Chip ID, set the device configuration */
+	retval = em28xx_read_reg(dev, EM28XX_R0A_CHIPID);
+	if (retval > 0) {
+		dev->chip_id = retval;
+
+		switch (dev->chip_id) {
+		case CHIP_ID_EM2800:
+			chip_name = "em2800";
+			break;
+		case CHIP_ID_EM2710:
+			chip_name = "em2710";
+			break;
+		case CHIP_ID_EM2750:
+			chip_name = "em2750";
+			break;
+		case CHIP_ID_EM2765:
+			chip_name = "em2765";
+			dev->wait_after_write = 0;
+			dev->is_em25xx = 1;
+			dev->eeprom_addrwidth_16bit = 1;
+			break;
+		case CHIP_ID_EM2820:
+			chip_name = "em2710/2820";
+			if (le16_to_cpu(udev->descriptor.idVendor) == 0xeb1a) {
+				__le16 idProd = udev->descriptor.idProduct;
+
+				if (le16_to_cpu(idProd) == 0x2710)
+					chip_name = "em2710";
+				else if (le16_to_cpu(idProd) == 0x2820)
+					chip_name = "em2820";
+			}
+			/* NOTE: the em2820 is used in webcams, too ! */
+			break;
+		case CHIP_ID_EM2840:
+			chip_name = "em2840";
+			break;
+		case CHIP_ID_EM2860:
+			chip_name = "em2860";
+			break;
+		case CHIP_ID_EM2870:
+			chip_name = "em2870";
+			dev->wait_after_write = 0;
+			break;
+		case CHIP_ID_EM2874:
+			chip_name = "em2874";
+			dev->wait_after_write = 0;
+			dev->eeprom_addrwidth_16bit = 1;
+			break;
+		case CHIP_ID_EM28174:
+			chip_name = "em28174";
+			dev->wait_after_write = 0;
+			dev->eeprom_addrwidth_16bit = 1;
+			break;
+		case CHIP_ID_EM28178:
+			chip_name = "em28178";
+			dev->wait_after_write = 0;
+			dev->eeprom_addrwidth_16bit = 1;
+			break;
+		case CHIP_ID_EM2883:
+			chip_name = "em2882/3";
+			dev->wait_after_write = 0;
+			break;
+		case CHIP_ID_EM2884:
+			chip_name = "em2884";
+			dev->wait_after_write = 0;
+			dev->eeprom_addrwidth_16bit = 1;
+			break;
+		}
+	}
+	if (!chip_name)
+		dev_info(&dev->intf->dev,
+			 "unknown em28xx chip ID (%d)\n", dev->chip_id);
+	else
+		dev_info(&dev->intf->dev, "chip ID is %s\n", chip_name);
+
+	em28xx_media_device_init(dev, udev);
+
+	if (dev->is_audio_only) {
+		retval = em28xx_audio_setup(dev);
+		if (retval) {
+			retval = -ENODEV;
+			goto err_deinit_media;
+		}
+		em28xx_init_extension(dev);
+
+		return 0;
+	}
+
+	em28xx_pre_card_setup(dev);
+
+	rt_mutex_init(&dev->i2c_bus_lock);
+
+	/* register i2c bus 0 */
+	if (dev->board.is_em2800)
+		retval = em28xx_i2c_register(dev, 0, EM28XX_I2C_ALGO_EM2800);
+	else
+		retval = em28xx_i2c_register(dev, 0, EM28XX_I2C_ALGO_EM28XX);
+	if (retval < 0) {
+		dev_err(&dev->intf->dev,
+			"%s: em28xx_i2c_register bus 0 - error [%d]!\n",
+		       __func__, retval);
+		goto err_deinit_media;
+	}
+
+	/* register i2c bus 1 */
+	if (dev->def_i2c_bus) {
+		if (dev->is_em25xx)
+			retval = em28xx_i2c_register(dev, 1,
+						     EM28XX_I2C_ALGO_EM25XX_BUS_B);
+		else
+			retval = em28xx_i2c_register(dev, 1,
+						     EM28XX_I2C_ALGO_EM28XX);
+		if (retval < 0) {
+			dev_err(&dev->intf->dev,
+				"%s: em28xx_i2c_register bus 1 - error [%d]!\n",
+				__func__, retval);
+
+			goto err_unreg_i2c;
+		}
+	}
+
+	/* Do board specific init and eeprom reading */
+	em28xx_card_setup(dev);
+
+	return 0;
+
+err_unreg_i2c:
+	em28xx_i2c_unregister(dev, 0);
+err_deinit_media:
+	em28xx_unregister_media_device(dev);
+	return retval;
+}
+
+static int em28xx_duplicate_dev(struct em28xx *dev)
+{
+	int nr;
+	struct em28xx *sec_dev = kmemdup(dev, sizeof(*sec_dev), GFP_KERNEL);
+
+	if (!sec_dev) {
+		dev->dev_next = NULL;
+		return -ENOMEM;
+	}
+	/* Check to see next free device and mark as used */
+	do {
+		nr = find_first_zero_bit(em28xx_devused, EM28XX_MAXBOARDS);
+		if (nr >= EM28XX_MAXBOARDS) {
+			/* No free device slots */
+			dev_warn(&dev->intf->dev, ": Supports only %i em28xx boards.\n",
+				 EM28XX_MAXBOARDS);
+			kfree(sec_dev);
+			dev->dev_next = NULL;
+			return -ENOMEM;
+		}
+	} while (test_and_set_bit(nr, em28xx_devused));
+	sec_dev->devno = nr;
+	snprintf(sec_dev->name, 28, "em28xx #%d", nr);
+	sec_dev->dev_next = NULL;
+	dev->dev_next = sec_dev;
+	return 0;
+}
+
+/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
+#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
+
+static void em28xx_check_usb_descriptor(struct em28xx *dev,
+					struct usb_device *udev,
+					struct usb_interface *intf,
+					int alt, int ep,
+					bool *has_vendor_audio,
+					bool *has_video,
+					bool *has_dvb)
+{
+	const struct usb_endpoint_descriptor *e;
+	int sizedescr, size;
+
+	/*
+	 * NOTE:
+	 *
+	 * Old logic with support for isoc transfers only was:
+	 *  0x82	isoc		=> analog
+	 *  0x83	isoc		=> audio
+	 *  0x84	isoc		=> digital
+	 *
+	 * New logic with support for bulk transfers
+	 *  0x82	isoc		=> analog
+	 *  0x82	bulk		=> analog
+	 *  0x83	isoc*		=> audio
+	 *  0x84	isoc		=> digital
+	 *  0x84	bulk		=> analog or digital**
+	 *  0x85	isoc		=> digital TS2
+	 *  0x85	bulk		=> digital TS2
+	 * (*: audio should always be isoc)
+	 * (**: analog, if ep 0x82 is isoc, otherwise digital)
+	 *
+	 * The new logic preserves backwards compatibility and
+	 * reflects the endpoint configurations we have seen
+	 * so far. But there might be devices for which this
+	 * logic is not sufficient...
+	 */
+
+	e = &intf->altsetting[alt].endpoint[ep].desc;
+
+	if (!usb_endpoint_dir_in(e))
+		return;
+
+	sizedescr = le16_to_cpu(e->wMaxPacketSize);
+	size = sizedescr & 0x7ff;
+
+	if (udev->speed == USB_SPEED_HIGH)
+		size = size * hb_mult(sizedescr);
+
+	/* Only inspect input endpoints */
+
+	switch (e->bEndpointAddress) {
+	case 0x82:
+		*has_video = true;
+		if (usb_endpoint_xfer_isoc(e)) {
+			dev->analog_ep_isoc = e->bEndpointAddress;
+			dev->alt_max_pkt_size_isoc[alt] = size;
+		} else if (usb_endpoint_xfer_bulk(e)) {
+			dev->analog_ep_bulk = e->bEndpointAddress;
+		}
+		return;
+	case 0x83:
+		if (usb_endpoint_xfer_isoc(e))
+			*has_vendor_audio = true;
+		else
+			dev_err(&intf->dev,
+				"error: skipping audio endpoint 0x83, because it uses bulk transfers !\n");
+		return;
+	case 0x84:
+		if (*has_video && (usb_endpoint_xfer_bulk(e))) {
+			dev->analog_ep_bulk = e->bEndpointAddress;
+		} else {
+			if (usb_endpoint_xfer_isoc(e)) {
+				if (size > dev->dvb_max_pkt_size_isoc) {
+					/*
+					 * 2) some manufacturers (e.g. Terratec)
+					 * disable endpoints by setting
+					 * wMaxPacketSize to 0 bytes for all
+					 * alt settings. So far, we've seen
+					 * this for DVB isoc endpoints only.
+					 */
+					*has_dvb = true;
+					dev->dvb_ep_isoc = e->bEndpointAddress;
+					dev->dvb_max_pkt_size_isoc = size;
+					dev->dvb_alt_isoc = alt;
+				}
+			} else {
+				*has_dvb = true;
+				dev->dvb_ep_bulk = e->bEndpointAddress;
+			}
+		}
+		return;
+	case 0x85:
+		if (usb_endpoint_xfer_isoc(e)) {
+			if (size > dev->dvb_max_pkt_size_isoc_ts2) {
+				dev->dvb_ep_isoc_ts2 = e->bEndpointAddress;
+				dev->dvb_max_pkt_size_isoc_ts2 = size;
+				dev->dvb_alt_isoc = alt;
+			}
+		} else {
+			dev->dvb_ep_bulk_ts2 = e->bEndpointAddress;
+		}
+		return;
+	}
+}
+
+/*
+ * em28xx_usb_probe()
+ * checks for supported devices
+ */
+static int em28xx_usb_probe(struct usb_interface *intf,
+			    const struct usb_device_id *id)
+{
+	struct usb_device *udev;
+	struct em28xx *dev = NULL;
+	int retval;
+	bool has_vendor_audio = false, has_video = false, has_dvb = false;
+	int i, nr, try_bulk;
+	const int ifnum = intf->altsetting[0].desc.bInterfaceNumber;
+	char *speed;
+
+	udev = usb_get_dev(interface_to_usbdev(intf));
+
+	/* Check to see next free device and mark as used */
+	do {
+		nr = find_first_zero_bit(em28xx_devused, EM28XX_MAXBOARDS);
+		if (nr >= EM28XX_MAXBOARDS) {
+			/* No free device slots */
+			dev_err(&intf->dev,
+				"Driver supports up to %i em28xx boards.\n",
+			       EM28XX_MAXBOARDS);
+			retval = -ENOMEM;
+			goto err_no_slot;
+		}
+	} while (test_and_set_bit(nr, em28xx_devused));
+
+	/* Don't register audio interfaces */
+	if (intf->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
+		dev_info(&intf->dev,
+			"audio device (%04x:%04x): interface %i, class %i\n",
+			le16_to_cpu(udev->descriptor.idVendor),
+			le16_to_cpu(udev->descriptor.idProduct),
+			ifnum,
+			intf->altsetting[0].desc.bInterfaceClass);
+
+		retval = -ENODEV;
+		goto err;
+	}
+
+	/* allocate memory for our device state and initialize it */
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev) {
+		retval = -ENOMEM;
+		goto err;
+	}
+
+	/* compute alternate max packet sizes */
+	dev->alt_max_pkt_size_isoc = kcalloc(intf->num_altsetting,
+					     sizeof(dev->alt_max_pkt_size_isoc[0]),
+					     GFP_KERNEL);
+	if (!dev->alt_max_pkt_size_isoc) {
+		kfree(dev);
+		retval = -ENOMEM;
+		goto err;
+	}
+
+	/* Get endpoints */
+	for (i = 0; i < intf->num_altsetting; i++) {
+		int ep;
+
+		for (ep = 0;
+		     ep < intf->altsetting[i].desc.bNumEndpoints;
+		     ep++)
+			em28xx_check_usb_descriptor(dev, udev, intf,
+						    i, ep,
+						    &has_vendor_audio,
+						    &has_video,
+						    &has_dvb);
+	}
+
+	if (!(has_vendor_audio || has_video || has_dvb)) {
+		retval = -ENODEV;
+		goto err_free;
+	}
+
+	switch (udev->speed) {
+	case USB_SPEED_LOW:
+		speed = "1.5";
+		break;
+	case USB_SPEED_UNKNOWN:
+	case USB_SPEED_FULL:
+		speed = "12";
+		break;
+	case USB_SPEED_HIGH:
+		speed = "480";
+		break;
+	default:
+		speed = "unknown";
+	}
+
+	dev_info(&intf->dev,
+		"New device %s %s @ %s Mbps (%04x:%04x, interface %d, class %d)\n",
+		udev->manufacturer ? udev->manufacturer : "",
+		udev->product ? udev->product : "",
+		speed,
+		le16_to_cpu(udev->descriptor.idVendor),
+		le16_to_cpu(udev->descriptor.idProduct),
+		ifnum,
+		intf->altsetting->desc.bInterfaceNumber);
+
+	/*
+	 * Make sure we have 480 Mbps of bandwidth, otherwise things like
+	 * video stream wouldn't likely work, since 12 Mbps is generally
+	 * not enough even for most Digital TV streams.
+	 */
+	if (udev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
+		dev_err(&intf->dev, "Device initialization failed.\n");
+		dev_err(&intf->dev,
+			"Device must be connected to a high-speed USB 2.0 port.\n");
+		retval = -ENODEV;
+		goto err_free;
+	}
+
+	kref_init(&dev->ref);
+
+	dev->devno = nr;
+	dev->model = id->driver_info;
+	dev->alt   = -1;
+	dev->is_audio_only = has_vendor_audio && !(has_video || has_dvb);
+	dev->has_video = has_video;
+	dev->ifnum = ifnum;
+
+	dev->ts = PRIMARY_TS;
+	snprintf(dev->name, 28, "em28xx");
+	dev->dev_next = NULL;
+
+	if (has_vendor_audio) {
+		dev_info(&intf->dev,
+			"Audio interface %i found (Vendor Class)\n", ifnum);
+		dev->usb_audio_type = EM28XX_USB_AUDIO_VENDOR;
+	}
+	/* Checks if audio is provided by a USB Audio Class intf */
+	for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
+		struct usb_interface *uif = udev->config->interface[i];
+
+		if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
+			if (has_vendor_audio)
+				dev_err(&intf->dev,
+					"em28xx: device seems to have vendor AND usb audio class interfaces !\n"
+					"\t\tThe vendor interface will be ignored. Please contact the developers <linux-media@vger.kernel.org>\n");
+			dev->usb_audio_type = EM28XX_USB_AUDIO_CLASS;
+			break;
+		}
+	}
+
+	if (has_video)
+		dev_info(&intf->dev, "Video interface %i found:%s%s\n",
+			ifnum,
+			dev->analog_ep_bulk ? " bulk" : "",
+			dev->analog_ep_isoc ? " isoc" : "");
+	if (has_dvb)
+		dev_info(&intf->dev, "DVB interface %i found:%s%s\n",
+			ifnum,
+			dev->dvb_ep_bulk ? " bulk" : "",
+			dev->dvb_ep_isoc ? " isoc" : "");
+
+	dev->num_alt = intf->num_altsetting;
+
+	if ((unsigned int)card[nr] < em28xx_bcount)
+		dev->model = card[nr];
+
+	/* save our data pointer in this intf device */
+	usb_set_intfdata(intf, dev);
+
+	/* allocate device struct and check if the device is a webcam */
+	mutex_init(&dev->lock);
+	retval = em28xx_init_dev(dev, udev, intf, nr);
+	if (retval)
+		goto err_free;
+
+	if (usb_xfer_mode < 0) {
+		if (dev->is_webcam)
+			try_bulk = 1;
+		else
+			try_bulk = 0;
+	} else {
+		try_bulk = usb_xfer_mode > 0;
+	}
+
+	/* Disable V4L2 if the device doesn't have a decoder or image sensor */
+	if (has_video &&
+	    dev->board.decoder == EM28XX_NODECODER &&
+	    dev->em28xx_sensor == EM28XX_NOSENSOR) {
+		dev_err(&intf->dev,
+			"Currently, V4L2 is not supported on this model\n");
+		has_video = false;
+		dev->has_video = false;
+	}
+
+	if (dev->board.has_dual_ts &&
+	    (dev->tuner_type != TUNER_ABSENT || INPUT(0)->type)) {
+		/*
+		 * The logic with sets alternate is not ready for dual-tuners
+		 * which analog modes.
+		 */
+		dev_err(&intf->dev,
+			"We currently don't support analog TV or stream capture on dual tuners.\n");
+		has_video = false;
+	}
+
+	/* Select USB transfer types to use */
+	if (has_video) {
+		if (!dev->analog_ep_isoc || (try_bulk && dev->analog_ep_bulk))
+			dev->analog_xfer_bulk = 1;
+		dev_info(&intf->dev, "analog set to %s mode.\n",
+			dev->analog_xfer_bulk ? "bulk" : "isoc");
+	}
+	if (has_dvb) {
+		if (!dev->dvb_ep_isoc || (try_bulk && dev->dvb_ep_bulk))
+			dev->dvb_xfer_bulk = 1;
+		dev_info(&intf->dev, "dvb set to %s mode.\n",
+			dev->dvb_xfer_bulk ? "bulk" : "isoc");
+	}
+
+	if (dev->board.has_dual_ts && em28xx_duplicate_dev(dev) == 0) {
+		kref_init(&dev->dev_next->ref);
+
+		dev->dev_next->ts = SECONDARY_TS;
+		dev->dev_next->alt   = -1;
+		dev->dev_next->is_audio_only = has_vendor_audio &&
+						!(has_video || has_dvb);
+		dev->dev_next->has_video = false;
+		dev->dev_next->ifnum = ifnum;
+		dev->dev_next->model = id->driver_info;
+
+		mutex_init(&dev->dev_next->lock);
+		retval = em28xx_init_dev(dev->dev_next, udev, intf,
+					 dev->dev_next->devno);
+		if (retval)
+			goto err_free;
+
+		dev->dev_next->board.ir_codes = NULL; /* No IR for 2nd tuner */
+		dev->dev_next->board.has_ir_i2c = 0; /* No IR for 2nd tuner */
+
+		if (usb_xfer_mode < 0) {
+			if (dev->dev_next->is_webcam)
+				try_bulk = 1;
+			else
+				try_bulk = 0;
+		} else {
+			try_bulk = usb_xfer_mode > 0;
+		}
+
+		/* Select USB transfer types to use */
+		if (has_dvb) {
+			if (!dev->dvb_ep_isoc_ts2 ||
+			    (try_bulk && dev->dvb_ep_bulk_ts2))
+				dev->dev_next->dvb_xfer_bulk = 1;
+			dev_info(&dev->intf->dev, "dvb ts2 set to %s mode.\n",
+				 dev->dev_next->dvb_xfer_bulk ? "bulk" : "isoc");
+		}
+
+		dev->dev_next->dvb_ep_isoc = dev->dvb_ep_isoc_ts2;
+		dev->dev_next->dvb_ep_bulk = dev->dvb_ep_bulk_ts2;
+		dev->dev_next->dvb_max_pkt_size_isoc = dev->dvb_max_pkt_size_isoc_ts2;
+		dev->dev_next->dvb_alt_isoc = dev->dvb_alt_isoc;
+
+		/* Configuare hardware to support TS2*/
+		if (dev->dvb_xfer_bulk) {
+			/* The ep4 and ep5 are configuared for BULK */
+			em28xx_write_reg(dev, 0x0b, 0x96);
+			mdelay(100);
+			em28xx_write_reg(dev, 0x0b, 0x80);
+			mdelay(100);
+		} else {
+			/* The ep4 and ep5 are configuared for ISO */
+			em28xx_write_reg(dev, 0x0b, 0x96);
+			mdelay(100);
+			em28xx_write_reg(dev, 0x0b, 0x82);
+			mdelay(100);
+		}
+	}
+
+	request_modules(dev);
+
+	/*
+	 * Do it at the end, to reduce dynamic configuration changes during
+	 * the device init. Yet, as request_modules() can be async, the
+	 * topology will likely change after the load of the em28xx subdrivers.
+	 */
+#ifdef CONFIG_MEDIA_CONTROLLER
+	retval = media_device_register(dev->media_dev);
+#endif
+
+	return 0;
+
+err_free:
+	kfree(dev->alt_max_pkt_size_isoc);
+	kfree(dev);
+
+err:
+	clear_bit(nr, em28xx_devused);
+
+err_no_slot:
+	usb_put_dev(udev);
+	return retval;
+}
+
+/*
+ * em28xx_usb_disconnect()
+ * called when the device gets disconnected
+ * video device will be unregistered on v4l2_close in case it is still open
+ */
+static void em28xx_usb_disconnect(struct usb_interface *intf)
+{
+	struct em28xx *dev;
+
+	dev = usb_get_intfdata(intf);
+	usb_set_intfdata(intf, NULL);
+
+	if (!dev)
+		return;
+
+	if (dev->dev_next) {
+		dev->dev_next->disconnected = 1;
+		dev_info(&dev->intf->dev, "Disconnecting %s\n",
+			 dev->dev_next->name);
+	}
+
+	dev->disconnected = 1;
+
+	dev_info(&dev->intf->dev, "Disconnecting %s\n", dev->name);
+
+	flush_request_modules(dev);
+
+	em28xx_close_extension(dev);
+
+	if (dev->dev_next)
+		em28xx_release_resources(dev->dev_next);
+	em28xx_release_resources(dev);
+
+	if (dev->dev_next) {
+		kref_put(&dev->dev_next->ref, em28xx_free_device);
+		dev->dev_next = NULL;
+	}
+	kref_put(&dev->ref, em28xx_free_device);
+}
+
+static int em28xx_usb_suspend(struct usb_interface *intf,
+			      pm_message_t message)
+{
+	struct em28xx *dev;
+
+	dev = usb_get_intfdata(intf);
+	if (!dev)
+		return 0;
+	em28xx_suspend_extension(dev);
+	return 0;
+}
+
+static int em28xx_usb_resume(struct usb_interface *intf)
+{
+	struct em28xx *dev;
+
+	dev = usb_get_intfdata(intf);
+	if (!dev)
+		return 0;
+	em28xx_resume_extension(dev);
+	return 0;
+}
+
+static struct usb_driver em28xx_usb_driver = {
+	.name = "em28xx",
+	.probe = em28xx_usb_probe,
+	.disconnect = em28xx_usb_disconnect,
+	.suspend = em28xx_usb_suspend,
+	.resume = em28xx_usb_resume,
+	.reset_resume = em28xx_usb_resume,
+	.id_table = em28xx_id_table,
+};
+
+module_usb_driver(em28xx_usb_driver);
diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c
new file mode 100644
index 000000000..308bc0290
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-core.c
@@ -0,0 +1,1180 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+//		      Markus Rechberger <mrechberger@gmail.com>
+//		      Mauro Carvalho Chehab <mchehab@kernel.org>
+//		      Sascha Sommer <saschasommer@freenet.de>
+// Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/vmalloc.h>
+#include <sound/ac97_codec.h>
+#include <media/v4l2-common.h>
+
+#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
+		      "Markus Rechberger <mrechberger@gmail.com>, " \
+		      "Mauro Carvalho Chehab <mchehab@kernel.org>, " \
+		      "Sascha Sommer <saschasommer@freenet.de>"
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(EM28XX_VERSION);
+
+/* #define ENABLE_DEBUG_ISOC_FRAMES */
+
+static unsigned int core_debug;
+module_param(core_debug, int, 0644);
+MODULE_PARM_DESC(core_debug, "enable debug messages [core and isoc]");
+
+#define em28xx_coredbg(fmt, arg...) do {				\
+	if (core_debug)							\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "core: %s: " fmt, __func__, ## arg);		\
+} while (0)
+
+static unsigned int reg_debug;
+module_param(reg_debug, int, 0644);
+MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]");
+
+#define em28xx_regdbg(fmt, arg...) do {				\
+	if (reg_debug)							\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "reg: %s: " fmt, __func__, ## arg);		\
+} while (0)
+
+/* FIXME: don't abuse core_debug */
+#define em28xx_isocdbg(fmt, arg...) do {				\
+	if (core_debug)							\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "core: %s: " fmt, __func__, ## arg);		\
+} while (0)
+
+/*
+ * em28xx_read_reg_req()
+ * reads data from the usb device specifying bRequest
+ */
+int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
+			    char *buf, int len)
+{
+	int ret;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int pipe = usb_rcvctrlpipe(udev, 0);
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (len > URB_MAX_CTRL_SIZE)
+		return -EINVAL;
+
+	mutex_lock(&dev->ctrl_urb_lock);
+	ret = usb_control_msg(udev, pipe, req,
+			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      0x0000, reg, dev->urb_buf, len, 1000);
+	if (ret < 0) {
+		em28xx_regdbg("(pipe 0x%08x): IN:  %02x %02x %02x %02x %02x %02x %02x %02x  failed with error %i\n",
+			      pipe,
+			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      req, 0, 0,
+			      reg & 0xff, reg >> 8,
+			      len & 0xff, len >> 8, ret);
+		mutex_unlock(&dev->ctrl_urb_lock);
+		return usb_translate_errors(ret);
+	}
+
+	if (len)
+		memcpy(buf, dev->urb_buf, len);
+
+	mutex_unlock(&dev->ctrl_urb_lock);
+
+	em28xx_regdbg("(pipe 0x%08x): IN:  %02x %02x %02x %02x %02x %02x %02x %02x <<< %*ph\n",
+		      pipe, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		      req, 0, 0,
+		      reg & 0xff, reg >> 8,
+		      len & 0xff, len >> 8, len, buf);
+
+	return ret;
+}
+
+/*
+ * em28xx_read_reg_req()
+ * reads data from the usb device specifying bRequest
+ */
+int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg)
+{
+	int ret;
+	u8 val;
+
+	ret = em28xx_read_reg_req_len(dev, req, reg, &val, 1);
+	if (ret < 0)
+		return ret;
+
+	return val;
+}
+
+int em28xx_read_reg(struct em28xx *dev, u16 reg)
+{
+	return em28xx_read_reg_req(dev, USB_REQ_GET_STATUS, reg);
+}
+EXPORT_SYMBOL_GPL(em28xx_read_reg);
+
+/*
+ * em28xx_write_regs_req()
+ * sends data to the usb device, specifying bRequest
+ */
+int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
+			  int len)
+{
+	int ret;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int pipe = usb_sndctrlpipe(udev, 0);
+
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (len < 1 || len > URB_MAX_CTRL_SIZE)
+		return -EINVAL;
+
+	mutex_lock(&dev->ctrl_urb_lock);
+	memcpy(dev->urb_buf, buf, len);
+	ret = usb_control_msg(udev, pipe, req,
+			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      0x0000, reg, dev->urb_buf, len, 1000);
+	mutex_unlock(&dev->ctrl_urb_lock);
+
+	if (ret < 0) {
+		em28xx_regdbg("(pipe 0x%08x): OUT:  %02x %02x %02x %02x %02x %02x %02x %02x >>> %*ph  failed with error %i\n",
+			      pipe,
+			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      req, 0, 0,
+			      reg & 0xff, reg >> 8,
+			      len & 0xff, len >> 8, len, buf, ret);
+		return usb_translate_errors(ret);
+	}
+
+	em28xx_regdbg("(pipe 0x%08x): OUT:  %02x %02x %02x %02x %02x %02x %02x %02x >>> %*ph\n",
+		      pipe,
+		      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		      req, 0, 0,
+		      reg & 0xff, reg >> 8,
+		      len & 0xff, len >> 8, len, buf);
+
+	if (dev->wait_after_write)
+		msleep(dev->wait_after_write);
+
+	return ret;
+}
+
+int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len)
+{
+	return em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len);
+}
+EXPORT_SYMBOL_GPL(em28xx_write_regs);
+
+/* Write a single register */
+int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val)
+{
+	return em28xx_write_regs(dev, reg, &val, 1);
+}
+EXPORT_SYMBOL_GPL(em28xx_write_reg);
+
+/*
+ * em28xx_write_reg_bits()
+ * sets only some bits (specified by bitmask) of a register, by first reading
+ * the actual value
+ */
+int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
+			  u8 bitmask)
+{
+	int oldval;
+	u8 newval;
+
+	oldval = em28xx_read_reg(dev, reg);
+	if (oldval < 0)
+		return oldval;
+
+	newval = (((u8)oldval) & ~bitmask) | (val & bitmask);
+
+	return em28xx_write_regs(dev, reg, &newval, 1);
+}
+EXPORT_SYMBOL_GPL(em28xx_write_reg_bits);
+
+/*
+ * em28xx_toggle_reg_bits()
+ * toggles/inverts the bits (specified by bitmask) of a register
+ */
+int em28xx_toggle_reg_bits(struct em28xx *dev, u16 reg, u8 bitmask)
+{
+	int oldval;
+	u8 newval;
+
+	oldval = em28xx_read_reg(dev, reg);
+	if (oldval < 0)
+		return oldval;
+
+	newval = (~oldval & bitmask) | (oldval & ~bitmask);
+
+	return em28xx_write_reg(dev, reg, newval);
+}
+EXPORT_SYMBOL_GPL(em28xx_toggle_reg_bits);
+
+/*
+ * em28xx_is_ac97_ready()
+ * Checks if ac97 is ready
+ */
+static int em28xx_is_ac97_ready(struct em28xx *dev)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(EM28XX_AC97_XFER_TIMEOUT);
+	int ret;
+
+	/* Wait up to 50 ms for AC97 command to complete */
+	while (time_is_after_jiffies(timeout)) {
+		ret = em28xx_read_reg(dev, EM28XX_R43_AC97BUSY);
+		if (ret < 0)
+			return ret;
+
+		if (!(ret & 0x01))
+			return 0;
+		msleep(5);
+	}
+
+	dev_warn(&dev->intf->dev,
+		 "AC97 command still being executed: not handled properly!\n");
+	return -EBUSY;
+}
+
+/*
+ * em28xx_read_ac97()
+ * write a 16 bit value to the specified AC97 address (LSB first!)
+ */
+int em28xx_read_ac97(struct em28xx *dev, u8 reg)
+{
+	int ret;
+	u8 addr = (reg & 0x7f) | 0x80;
+	__le16 val;
+
+	ret = em28xx_is_ac97_ready(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R40_AC97LSB,
+					   (u8 *)&val, sizeof(val));
+
+	if (ret < 0)
+		return ret;
+	return le16_to_cpu(val);
+}
+EXPORT_SYMBOL_GPL(em28xx_read_ac97);
+
+/*
+ * em28xx_write_ac97()
+ * write a 16 bit value to the specified AC97 address (LSB first!)
+ */
+int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val)
+{
+	int ret;
+	u8 addr = reg & 0x7f;
+	__le16 value;
+
+	value = cpu_to_le16(val);
+
+	ret = em28xx_is_ac97_ready(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = em28xx_write_regs(dev, EM28XX_R40_AC97LSB, (u8 *)&value, 2);
+	if (ret < 0)
+		return ret;
+
+	ret = em28xx_write_regs(dev, EM28XX_R42_AC97ADDR, &addr, 1);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(em28xx_write_ac97);
+
+struct em28xx_vol_itable {
+	enum em28xx_amux mux;
+	u8		 reg;
+};
+
+static struct em28xx_vol_itable inputs[] = {
+	{ EM28XX_AMUX_VIDEO,	AC97_VIDEO	},
+	{ EM28XX_AMUX_LINE_IN,	AC97_LINE	},
+	{ EM28XX_AMUX_PHONE,	AC97_PHONE	},
+	{ EM28XX_AMUX_MIC,	AC97_MIC	},
+	{ EM28XX_AMUX_CD,	AC97_CD		},
+	{ EM28XX_AMUX_AUX,	AC97_AUX	},
+	{ EM28XX_AMUX_PCM_OUT,	AC97_PCM	},
+};
+
+static int set_ac97_input(struct em28xx *dev)
+{
+	int ret, i;
+	enum em28xx_amux amux = dev->ctl_ainput;
+
+	/*
+	 * EM28XX_AMUX_VIDEO2 is a special case used to indicate that
+	 * em28xx should point to LINE IN, while AC97 should use VIDEO
+	 */
+	if (amux == EM28XX_AMUX_VIDEO2)
+		amux = EM28XX_AMUX_VIDEO;
+
+	/* Mute all entres but the one that were selected */
+	for (i = 0; i < ARRAY_SIZE(inputs); i++) {
+		if (amux == inputs[i].mux)
+			ret = em28xx_write_ac97(dev, inputs[i].reg, 0x0808);
+		else
+			ret = em28xx_write_ac97(dev, inputs[i].reg, 0x8000);
+
+		if (ret < 0)
+			dev_warn(&dev->intf->dev,
+				 "couldn't setup AC97 register %d\n",
+				 inputs[i].reg);
+	}
+	return 0;
+}
+
+static int em28xx_set_audio_source(struct em28xx *dev)
+{
+	int ret;
+	u8 input;
+
+	if (dev->board.is_em2800) {
+		if (dev->ctl_ainput == EM28XX_AMUX_VIDEO)
+			input = EM2800_AUDIO_SRC_TUNER;
+		else
+			input = EM2800_AUDIO_SRC_LINE;
+
+		ret = em28xx_write_regs(dev, EM2800_R08_AUDIOSRC, &input, 1);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (dev->has_msp34xx) {
+		input = EM28XX_AUDIO_SRC_TUNER;
+	} else {
+		switch (dev->ctl_ainput) {
+		case EM28XX_AMUX_VIDEO:
+			input = EM28XX_AUDIO_SRC_TUNER;
+			break;
+		default:
+			input = EM28XX_AUDIO_SRC_LINE;
+			break;
+		}
+	}
+
+	if (dev->board.mute_gpio && dev->mute)
+		em28xx_gpio_set(dev, dev->board.mute_gpio);
+	else
+		em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio);
+
+	ret = em28xx_write_reg_bits(dev, EM28XX_R0E_AUDIOSRC, input, 0xc0);
+	if (ret < 0)
+		return ret;
+	usleep_range(10000, 11000);
+
+	switch (dev->audio_mode.ac97) {
+	case EM28XX_NO_AC97:
+		break;
+	default:
+		ret = set_ac97_input(dev);
+	}
+
+	return ret;
+}
+
+struct em28xx_vol_otable {
+	enum em28xx_aout mux;
+	u8		 reg;
+};
+
+static const struct em28xx_vol_otable outputs[] = {
+	{ EM28XX_AOUT_MASTER, AC97_MASTER		},
+	{ EM28XX_AOUT_LINE,   AC97_HEADPHONE		},
+	{ EM28XX_AOUT_MONO,   AC97_MASTER_MONO		},
+	{ EM28XX_AOUT_LFE,    AC97_CENTER_LFE_MASTER	},
+	{ EM28XX_AOUT_SURR,   AC97_SURROUND_MASTER	},
+};
+
+int em28xx_audio_analog_set(struct em28xx *dev)
+{
+	int ret, i;
+	u8 xclk;
+
+	if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE)
+		return 0;
+
+	/*
+	 * It is assumed that all devices use master volume for output.
+	 * It would be possible to use also line output.
+	 */
+	if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+		/* Mute all outputs */
+		for (i = 0; i < ARRAY_SIZE(outputs); i++) {
+			ret = em28xx_write_ac97(dev, outputs[i].reg, 0x8000);
+			if (ret < 0)
+				dev_warn(&dev->intf->dev,
+					 "couldn't setup AC97 register %d\n",
+					 outputs[i].reg);
+		}
+	}
+
+	xclk = dev->board.xclk & 0x7f;
+	if (!dev->mute)
+		xclk |= EM28XX_XCLK_AUDIO_UNMUTE;
+
+	ret = em28xx_write_reg(dev, EM28XX_R0F_XCLK, xclk);
+	if (ret < 0)
+		return ret;
+	usleep_range(10000, 11000);
+
+	/* Selects the proper audio input */
+	ret = em28xx_set_audio_source(dev);
+
+	/* Sets volume */
+	if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+		int vol;
+
+		em28xx_write_ac97(dev, AC97_POWERDOWN, 0x4200);
+		em28xx_write_ac97(dev, AC97_EXTENDED_STATUS, 0x0031);
+		em28xx_write_ac97(dev, AC97_PCM_LR_ADC_RATE, 0xbb80);
+
+		/* LSB: left channel - both channels with the same level */
+		vol = (0x1f - dev->volume) | ((0x1f - dev->volume) << 8);
+
+		/* Mute device, if needed */
+		if (dev->mute)
+			vol |= 0x8000;
+
+		/* Sets volume */
+		for (i = 0; i < ARRAY_SIZE(outputs); i++) {
+			if (dev->ctl_aoutput & outputs[i].mux)
+				ret = em28xx_write_ac97(dev, outputs[i].reg,
+							vol);
+			if (ret < 0)
+				dev_warn(&dev->intf->dev,
+					 "couldn't setup AC97 register %d\n",
+					 outputs[i].reg);
+		}
+
+		if (dev->ctl_aoutput & EM28XX_AOUT_PCM_IN) {
+			int sel = ac97_return_record_select(dev->ctl_aoutput);
+
+			/*
+			 * Use the same input for both left and right
+			 * channels
+			 */
+			sel |= (sel << 8);
+
+			em28xx_write_ac97(dev, AC97_REC_SEL, sel);
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(em28xx_audio_analog_set);
+
+int em28xx_audio_setup(struct em28xx *dev)
+{
+	int vid1, vid2, feat, cfg;
+	u32 vid = 0;
+	u8 i2s_samplerates;
+
+	if (dev->chip_id == CHIP_ID_EM2870 ||
+	    dev->chip_id == CHIP_ID_EM2874 ||
+	    dev->chip_id == CHIP_ID_EM28174 ||
+	    dev->chip_id == CHIP_ID_EM28178) {
+		/* Digital only device - don't load any alsa module */
+		dev->int_audio_type = EM28XX_INT_AUDIO_NONE;
+		dev->usb_audio_type = EM28XX_USB_AUDIO_NONE;
+		return 0;
+	}
+
+	/* See how this device is configured */
+	cfg = em28xx_read_reg(dev, EM28XX_R00_CHIPCFG);
+	dev_info(&dev->intf->dev, "Config register raw data: 0x%02x\n", cfg);
+	if (cfg < 0) { /* Register read error */
+		/* Be conservative */
+		dev->int_audio_type = EM28XX_INT_AUDIO_AC97;
+	} else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) == 0x00) {
+		/* The device doesn't have vendor audio at all */
+		dev->int_audio_type = EM28XX_INT_AUDIO_NONE;
+		dev->usb_audio_type = EM28XX_USB_AUDIO_NONE;
+		return 0;
+	} else if ((cfg & EM28XX_CHIPCFG_AUDIOMASK) != EM28XX_CHIPCFG_AC97) {
+		dev->int_audio_type = EM28XX_INT_AUDIO_I2S;
+		if (dev->chip_id < CHIP_ID_EM2860 &&
+		    (cfg & EM28XX_CHIPCFG_AUDIOMASK) ==
+		    EM2820_CHIPCFG_I2S_1_SAMPRATE)
+			i2s_samplerates = 1;
+		else if (dev->chip_id >= CHIP_ID_EM2860 &&
+			 (cfg & EM28XX_CHIPCFG_AUDIOMASK) ==
+			 EM2860_CHIPCFG_I2S_5_SAMPRATES)
+			i2s_samplerates = 5;
+		else
+			i2s_samplerates = 3;
+		dev_info(&dev->intf->dev, "I2S Audio (%d sample rate(s))\n",
+			 i2s_samplerates);
+		/* Skip the code that does AC97 vendor detection */
+		dev->audio_mode.ac97 = EM28XX_NO_AC97;
+		goto init_audio;
+	} else {
+		dev->int_audio_type = EM28XX_INT_AUDIO_AC97;
+	}
+
+	dev->audio_mode.ac97 = EM28XX_AC97_OTHER;
+
+	vid1 = em28xx_read_ac97(dev, AC97_VENDOR_ID1);
+	if (vid1 < 0) {
+		/*
+		 * Device likely doesn't support AC97
+		 * Note: (some) em2800 devices without eeprom reports 0x91 on
+		 *	 CHIPCFG register, even not having an AC97 chip
+		 */
+		dev_warn(&dev->intf->dev,
+			 "AC97 chip type couldn't be determined\n");
+		dev->audio_mode.ac97 = EM28XX_NO_AC97;
+		if (dev->usb_audio_type == EM28XX_USB_AUDIO_VENDOR)
+			dev->usb_audio_type = EM28XX_USB_AUDIO_NONE;
+		dev->int_audio_type = EM28XX_INT_AUDIO_NONE;
+		goto init_audio;
+	}
+
+	vid2 = em28xx_read_ac97(dev, AC97_VENDOR_ID2);
+	if (vid2 < 0)
+		goto init_audio;
+
+	vid = vid1 << 16 | vid2;
+	dev_warn(&dev->intf->dev, "AC97 vendor ID = 0x%08x\n", vid);
+
+	feat = em28xx_read_ac97(dev, AC97_RESET);
+	if (feat < 0)
+		goto init_audio;
+
+	dev_warn(&dev->intf->dev, "AC97 features = 0x%04x\n", feat);
+
+	/* Try to identify what audio processor we have */
+	if ((vid == 0xffffffff || vid == 0x83847650) && feat == 0x6a90)
+		dev->audio_mode.ac97 = EM28XX_AC97_EM202;
+	else if ((vid >> 8) == 0x838476)
+		dev->audio_mode.ac97 = EM28XX_AC97_SIGMATEL;
+
+init_audio:
+	/* Reports detected AC97 processor */
+	switch (dev->audio_mode.ac97) {
+	case EM28XX_NO_AC97:
+		dev_info(&dev->intf->dev, "No AC97 audio processor\n");
+		break;
+	case EM28XX_AC97_EM202:
+		dev_info(&dev->intf->dev,
+			 "Empia 202 AC97 audio processor detected\n");
+		break;
+	case EM28XX_AC97_SIGMATEL:
+		dev_info(&dev->intf->dev,
+			 "Sigmatel audio processor detected (stac 97%02x)\n",
+			 vid & 0xff);
+		break;
+	case EM28XX_AC97_OTHER:
+		dev_warn(&dev->intf->dev,
+			 "Unknown AC97 audio processor detected!\n");
+		break;
+	default:
+		break;
+	}
+
+	return em28xx_audio_analog_set(dev);
+}
+EXPORT_SYMBOL_GPL(em28xx_audio_setup);
+
+const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
+					 enum em28xx_led_role role)
+{
+	if (dev->board.leds) {
+		u8 k = 0;
+
+		while (dev->board.leds[k].role >= 0 &&
+		       dev->board.leds[k].role < EM28XX_NUM_LED_ROLES) {
+			if (dev->board.leds[k].role == role)
+				return &dev->board.leds[k];
+			k++;
+		}
+	}
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(em28xx_find_led);
+
+int em28xx_capture_start(struct em28xx *dev, int start)
+{
+	int rc;
+	const struct em28xx_led *led = NULL;
+
+	if (dev->chip_id == CHIP_ID_EM2874 ||
+	    dev->chip_id == CHIP_ID_EM2884 ||
+	    dev->chip_id == CHIP_ID_EM28174 ||
+	    dev->chip_id == CHIP_ID_EM28178) {
+		/* The Transport Stream Enable Register moved in em2874 */
+		if (dev->dvb_xfer_bulk) {
+			/* Max Tx Size = 188 * 256 = 48128 - LCM(188,512) * 2 */
+			em28xx_write_reg(dev, (dev->ts == PRIMARY_TS) ?
+					 EM2874_R5D_TS1_PKT_SIZE :
+					 EM2874_R5E_TS2_PKT_SIZE,
+					 0xff);
+		} else {
+			/* ISOC Maximum Transfer Size = 188 * 5 */
+			em28xx_write_reg(dev, (dev->ts == PRIMARY_TS) ?
+					 EM2874_R5D_TS1_PKT_SIZE :
+					 EM2874_R5E_TS2_PKT_SIZE,
+					 dev->dvb_max_pkt_size_isoc / 188);
+		}
+		if (dev->ts == PRIMARY_TS)
+			rc = em28xx_write_reg_bits(dev,
+						   EM2874_R5F_TS_ENABLE,
+						   start ? EM2874_TS1_CAPTURE_ENABLE : 0x00,
+						   EM2874_TS1_CAPTURE_ENABLE | EM2874_TS1_FILTER_ENABLE | EM2874_TS1_NULL_DISCARD);
+		else
+			rc = em28xx_write_reg_bits(dev,
+						   EM2874_R5F_TS_ENABLE,
+						   start ? EM2874_TS2_CAPTURE_ENABLE : 0x00,
+						   EM2874_TS2_CAPTURE_ENABLE | EM2874_TS2_FILTER_ENABLE | EM2874_TS2_NULL_DISCARD);
+	} else {
+		/* FIXME: which is the best order? */
+		/* video registers are sampled by VREF */
+		rc = em28xx_write_reg_bits(dev, EM28XX_R0C_USBSUSP,
+					   start ? 0x10 : 0x00, 0x10);
+		if (rc < 0)
+			return rc;
+
+		if (start) {
+			if (dev->is_webcam)
+				rc = em28xx_write_reg(dev, 0x13, 0x0c);
+
+			/* Enable video capture */
+			rc = em28xx_write_reg(dev, 0x48, 0x00);
+			if (rc < 0)
+				return rc;
+
+			if (dev->mode == EM28XX_ANALOG_MODE)
+				rc = em28xx_write_reg(dev,
+						      EM28XX_R12_VINENABLE,
+						      0x67);
+			else
+				rc = em28xx_write_reg(dev,
+						      EM28XX_R12_VINENABLE,
+						      0x37);
+			if (rc < 0)
+				return rc;
+
+			usleep_range(10000, 11000);
+		} else {
+			/* disable video capture */
+			rc = em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x27);
+		}
+	}
+
+	if (dev->mode == EM28XX_ANALOG_MODE)
+		led = em28xx_find_led(dev, EM28XX_LED_ANALOG_CAPTURING);
+	else
+		led = em28xx_find_led(dev, EM28XX_LED_DIGITAL_CAPTURING);
+
+	if (led)
+		em28xx_write_reg_bits(dev, led->gpio_reg,
+				      (!start ^ led->inverted) ?
+				      ~led->gpio_mask : led->gpio_mask,
+				      led->gpio_mask);
+
+	return rc;
+}
+
+int em28xx_gpio_set(struct em28xx *dev, const struct em28xx_reg_seq *gpio)
+{
+	int rc = 0;
+
+	if (!gpio)
+		return rc;
+
+	if (dev->mode != EM28XX_SUSPEND) {
+		em28xx_write_reg(dev, 0x48, 0x00);
+		if (dev->mode == EM28XX_ANALOG_MODE)
+			em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x67);
+		else
+			em28xx_write_reg(dev, EM28XX_R12_VINENABLE, 0x37);
+		usleep_range(10000, 11000);
+	}
+
+	/* Send GPIO reset sequences specified at board entry */
+	while (gpio->sleep >= 0) {
+		if (gpio->reg >= 0) {
+			rc = em28xx_write_reg_bits(dev,
+						   gpio->reg,
+						   gpio->val,
+						   gpio->mask);
+			if (rc < 0)
+				return rc;
+		}
+		if (gpio->sleep > 0)
+			msleep(gpio->sleep);
+
+		gpio++;
+	}
+	return rc;
+}
+EXPORT_SYMBOL_GPL(em28xx_gpio_set);
+
+int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode)
+{
+	if (dev->mode == set_mode)
+		return 0;
+
+	if (set_mode == EM28XX_SUSPEND) {
+		dev->mode = set_mode;
+
+		/* FIXME: add suspend support for ac97 */
+
+		return em28xx_gpio_set(dev, dev->board.suspend_gpio);
+	}
+
+	dev->mode = set_mode;
+
+	if (dev->mode == EM28XX_DIGITAL_MODE)
+		return em28xx_gpio_set(dev, dev->board.dvb_gpio);
+	else
+		return em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio);
+}
+EXPORT_SYMBOL_GPL(em28xx_set_mode);
+
+/*
+ *URB control
+ */
+
+/*
+ * URB completion handler for isoc/bulk transfers
+ */
+static void em28xx_irq_callback(struct urb *urb)
+{
+	struct em28xx *dev = urb->context;
+	unsigned long flags;
+	int i;
+
+	switch (urb->status) {
+	case 0:             /* success */
+	case -ETIMEDOUT:    /* NAK */
+		break;
+	case -ECONNRESET:   /* kill */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	default:            /* error */
+		em28xx_isocdbg("urb completion error %d.\n", urb->status);
+		break;
+	}
+
+	/* Copy data from URB */
+	spin_lock_irqsave(&dev->slock, flags);
+	dev->usb_ctl.urb_data_copy(dev, urb);
+	spin_unlock_irqrestore(&dev->slock, flags);
+
+	/* Reset urb buffers */
+	for (i = 0; i < urb->number_of_packets; i++) {
+		/* isoc only (bulk: number_of_packets = 0) */
+		urb->iso_frame_desc[i].status = 0;
+		urb->iso_frame_desc[i].actual_length = 0;
+	}
+	urb->status = 0;
+
+	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (urb->status) {
+		em28xx_isocdbg("urb resubmit failed (error=%i)\n",
+			       urb->status);
+	}
+}
+
+/*
+ * Stop and Deallocate URBs
+ */
+void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode)
+{
+	struct urb *urb;
+	struct em28xx_usb_bufs *usb_bufs;
+	int i;
+
+	em28xx_isocdbg("called %s in mode %d\n", __func__, mode);
+
+	if (mode == EM28XX_DIGITAL_MODE)
+		usb_bufs = &dev->usb_ctl.digital_bufs;
+	else
+		usb_bufs = &dev->usb_ctl.analog_bufs;
+
+	for (i = 0; i < usb_bufs->num_bufs; i++) {
+		urb = usb_bufs->urb[i];
+		if (urb) {
+			if (!irqs_disabled())
+				usb_kill_urb(urb);
+			else
+				usb_unlink_urb(urb);
+
+			usb_free_urb(urb);
+			usb_bufs->urb[i] = NULL;
+		}
+	}
+
+	kfree(usb_bufs->urb);
+	kfree(usb_bufs->buf);
+
+	usb_bufs->urb = NULL;
+	usb_bufs->buf = NULL;
+	usb_bufs->num_bufs = 0;
+
+	em28xx_capture_start(dev, 0);
+}
+EXPORT_SYMBOL_GPL(em28xx_uninit_usb_xfer);
+
+/*
+ * Stop URBs
+ */
+void em28xx_stop_urbs(struct em28xx *dev)
+{
+	int i;
+	struct urb *urb;
+	struct em28xx_usb_bufs *isoc_bufs = &dev->usb_ctl.digital_bufs;
+
+	em28xx_isocdbg("called %s\n", __func__);
+
+	for (i = 0; i < isoc_bufs->num_bufs; i++) {
+		urb = isoc_bufs->urb[i];
+		if (urb) {
+			if (!irqs_disabled())
+				usb_kill_urb(urb);
+			else
+				usb_unlink_urb(urb);
+		}
+	}
+
+	em28xx_capture_start(dev, 0);
+}
+EXPORT_SYMBOL_GPL(em28xx_stop_urbs);
+
+/*
+ * Allocate URBs
+ */
+int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
+		      int num_bufs, int max_pkt_size, int packet_multiplier)
+{
+	struct em28xx_usb_bufs *usb_bufs;
+	struct urb *urb;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int i;
+	int sb_size, pipe;
+	int j, k;
+
+	em28xx_isocdbg("em28xx: called %s in mode %d\n", __func__, mode);
+
+	/*
+	 * Check mode and if we have an endpoint for the selected
+	 * transfer type, select buffer
+	 */
+	if (mode == EM28XX_DIGITAL_MODE) {
+		if ((xfer_bulk && !dev->dvb_ep_bulk) ||
+		    (!xfer_bulk && !dev->dvb_ep_isoc)) {
+			dev_err(&dev->intf->dev,
+				"no endpoint for DVB mode and transfer type %d\n",
+				xfer_bulk > 0);
+			return -EINVAL;
+		}
+		usb_bufs = &dev->usb_ctl.digital_bufs;
+	} else if (mode == EM28XX_ANALOG_MODE) {
+		if ((xfer_bulk && !dev->analog_ep_bulk) ||
+		    (!xfer_bulk && !dev->analog_ep_isoc)) {
+			dev_err(&dev->intf->dev,
+				"no endpoint for analog mode and transfer type %d\n",
+				xfer_bulk > 0);
+			return -EINVAL;
+		}
+		usb_bufs = &dev->usb_ctl.analog_bufs;
+	} else {
+		dev_err(&dev->intf->dev, "invalid mode selected\n");
+		return -EINVAL;
+	}
+
+	/* De-allocates all pending stuff */
+	em28xx_uninit_usb_xfer(dev, mode);
+
+	usb_bufs->num_bufs = num_bufs;
+
+	usb_bufs->urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
+	if (!usb_bufs->urb)
+		return -ENOMEM;
+
+	usb_bufs->buf = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
+	if (!usb_bufs->buf) {
+		kfree(usb_bufs->urb);
+		return -ENOMEM;
+	}
+
+	usb_bufs->max_pkt_size = max_pkt_size;
+	if (xfer_bulk)
+		usb_bufs->num_packets = 0;
+	else
+		usb_bufs->num_packets = packet_multiplier;
+	dev->usb_ctl.vid_buf = NULL;
+	dev->usb_ctl.vbi_buf = NULL;
+
+	sb_size = packet_multiplier * usb_bufs->max_pkt_size;
+
+	/* allocate urbs and transfer buffers */
+	for (i = 0; i < usb_bufs->num_bufs; i++) {
+		urb = usb_alloc_urb(usb_bufs->num_packets, GFP_KERNEL);
+		if (!urb) {
+			em28xx_uninit_usb_xfer(dev, mode);
+			return -ENOMEM;
+		}
+		usb_bufs->urb[i] = urb;
+
+		usb_bufs->buf[i] = kzalloc(sb_size, GFP_KERNEL);
+		if (!usb_bufs->buf[i]) {
+			for (i--; i >= 0; i--)
+				kfree(usb_bufs->buf[i]);
+
+			em28xx_uninit_usb_xfer(dev, mode);
+			return -ENOMEM;
+		}
+
+		urb->transfer_flags = URB_FREE_BUFFER;
+
+		if (xfer_bulk) { /* bulk */
+			pipe = usb_rcvbulkpipe(udev,
+					       mode == EM28XX_ANALOG_MODE ?
+					       dev->analog_ep_bulk :
+					       dev->dvb_ep_bulk);
+			usb_fill_bulk_urb(urb, udev, pipe, usb_bufs->buf[i],
+					  sb_size, em28xx_irq_callback, dev);
+		} else { /* isoc */
+			pipe = usb_rcvisocpipe(udev,
+					       mode == EM28XX_ANALOG_MODE ?
+					       dev->analog_ep_isoc :
+					       dev->dvb_ep_isoc);
+			usb_fill_int_urb(urb, udev, pipe, usb_bufs->buf[i],
+					 sb_size, em28xx_irq_callback, dev, 1);
+			urb->transfer_flags |= URB_ISO_ASAP;
+			k = 0;
+			for (j = 0; j < usb_bufs->num_packets; j++) {
+				urb->iso_frame_desc[j].offset = k;
+				urb->iso_frame_desc[j].length =
+							usb_bufs->max_pkt_size;
+				k += usb_bufs->max_pkt_size;
+			}
+		}
+
+		urb->number_of_packets = usb_bufs->num_packets;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(em28xx_alloc_urbs);
+
+/*
+ * Allocate URBs and start IRQ
+ */
+int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
+			 int xfer_bulk, int num_bufs, int max_pkt_size,
+		    int packet_multiplier,
+		    int (*urb_data_copy)(struct em28xx *dev, struct urb *urb))
+{
+	struct em28xx_dmaqueue *dma_q = &dev->vidq;
+	struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
+	struct em28xx_usb_bufs *usb_bufs;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int i;
+	int rc;
+	int alloc;
+
+	em28xx_isocdbg("em28xx: called %s in mode %d\n", __func__, mode);
+
+	dev->usb_ctl.urb_data_copy = urb_data_copy;
+
+	if (mode == EM28XX_DIGITAL_MODE) {
+		usb_bufs = &dev->usb_ctl.digital_bufs;
+		/* no need to free/alloc usb buffers in digital mode */
+		alloc = 0;
+	} else {
+		usb_bufs = &dev->usb_ctl.analog_bufs;
+		alloc = 1;
+	}
+
+	if (alloc) {
+		rc = em28xx_alloc_urbs(dev, mode, xfer_bulk, num_bufs,
+				       max_pkt_size, packet_multiplier);
+		if (rc)
+			return rc;
+	}
+
+	if (xfer_bulk) {
+		rc = usb_clear_halt(udev, usb_bufs->urb[0]->pipe);
+		if (rc < 0) {
+			dev_err(&dev->intf->dev,
+				"failed to clear USB bulk endpoint stall/halt condition (error=%i)\n",
+			       rc);
+			em28xx_uninit_usb_xfer(dev, mode);
+			return rc;
+		}
+	}
+
+	init_waitqueue_head(&dma_q->wq);
+	init_waitqueue_head(&vbi_dma_q->wq);
+
+	em28xx_capture_start(dev, 1);
+
+	/* submit urbs and enables IRQ */
+	for (i = 0; i < usb_bufs->num_bufs; i++) {
+		rc = usb_submit_urb(usb_bufs->urb[i], GFP_KERNEL);
+		if (rc) {
+			dev_err(&dev->intf->dev,
+				"submit of urb %i failed (error=%i)\n", i, rc);
+			em28xx_uninit_usb_xfer(dev, mode);
+			return rc;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(em28xx_init_usb_xfer);
+
+/*
+ * Device control list
+ */
+
+static LIST_HEAD(em28xx_devlist);
+static DEFINE_MUTEX(em28xx_devlist_mutex);
+
+/*
+ * Extension interface
+ */
+
+static LIST_HEAD(em28xx_extension_devlist);
+
+int em28xx_register_extension(struct em28xx_ops *ops)
+{
+	struct em28xx *dev = NULL;
+
+	mutex_lock(&em28xx_devlist_mutex);
+	list_add_tail(&ops->next, &em28xx_extension_devlist);
+	list_for_each_entry(dev, &em28xx_devlist, devlist) {
+		if (ops->init) {
+			ops->init(dev);
+			if (dev->dev_next)
+				ops->init(dev->dev_next);
+		}
+	}
+	mutex_unlock(&em28xx_devlist_mutex);
+	pr_info("em28xx: Registered (%s) extension\n", ops->name);
+	return 0;
+}
+EXPORT_SYMBOL(em28xx_register_extension);
+
+void em28xx_unregister_extension(struct em28xx_ops *ops)
+{
+	struct em28xx *dev = NULL;
+
+	mutex_lock(&em28xx_devlist_mutex);
+	list_for_each_entry(dev, &em28xx_devlist, devlist) {
+		if (ops->fini) {
+			if (dev->dev_next)
+				ops->fini(dev->dev_next);
+			ops->fini(dev);
+		}
+	}
+	list_del(&ops->next);
+	mutex_unlock(&em28xx_devlist_mutex);
+	pr_info("em28xx: Removed (%s) extension\n", ops->name);
+}
+EXPORT_SYMBOL(em28xx_unregister_extension);
+
+void em28xx_init_extension(struct em28xx *dev)
+{
+	const struct em28xx_ops *ops = NULL;
+
+	mutex_lock(&em28xx_devlist_mutex);
+	list_add_tail(&dev->devlist, &em28xx_devlist);
+	list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+		if (ops->init) {
+			ops->init(dev);
+			if (dev->dev_next)
+				ops->init(dev->dev_next);
+		}
+	}
+	mutex_unlock(&em28xx_devlist_mutex);
+}
+
+void em28xx_close_extension(struct em28xx *dev)
+{
+	const struct em28xx_ops *ops = NULL;
+
+	mutex_lock(&em28xx_devlist_mutex);
+	list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+		if (ops->fini) {
+			if (dev->dev_next)
+				ops->fini(dev->dev_next);
+			ops->fini(dev);
+		}
+	}
+	list_del(&dev->devlist);
+	mutex_unlock(&em28xx_devlist_mutex);
+}
+
+int em28xx_suspend_extension(struct em28xx *dev)
+{
+	const struct em28xx_ops *ops = NULL;
+
+	dev_info(&dev->intf->dev, "Suspending extensions\n");
+	mutex_lock(&em28xx_devlist_mutex);
+	list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+		if (!ops->suspend)
+			continue;
+		ops->suspend(dev);
+		if (dev->dev_next)
+			ops->suspend(dev->dev_next);
+	}
+	mutex_unlock(&em28xx_devlist_mutex);
+	return 0;
+}
+
+int em28xx_resume_extension(struct em28xx *dev)
+{
+	const struct em28xx_ops *ops = NULL;
+
+	dev_info(&dev->intf->dev, "Resuming extensions\n");
+	mutex_lock(&em28xx_devlist_mutex);
+	list_for_each_entry(ops, &em28xx_extension_devlist, next) {
+		if (!ops->resume)
+			continue;
+		ops->resume(dev);
+		if (dev->dev_next)
+			ops->resume(dev->dev_next);
+	}
+	mutex_unlock(&em28xx_devlist_mutex);
+	return 0;
+}
diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
new file mode 100644
index 000000000..3cd9e9556
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -0,0 +1,2127 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// DVB device driver for em28xx
+//
+// (c) 2008-2011 Mauro Carvalho Chehab <mchehab@kernel.org>
+//
+// (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
+//	- Fixes for the driver to properly work with HVR-950
+//	- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
+//	- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
+//
+// (c) 2008 Aidan Thornton <makosoft@googlemail.com>
+//
+// (c) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
+//	(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
+//	(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation version 2 of the License.
+
+#include "em28xx.h"
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#include <media/v4l2-common.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include <media/dmxdev.h>
+#include <media/tuner.h>
+#include "tuner-simple.h"
+#include <linux/gpio.h>
+
+#include "lgdt330x.h"
+#include "lgdt3305.h"
+#include "lgdt3306a.h"
+#include "zl10353.h"
+#include "s5h1409.h"
+#include "mt2060.h"
+#include "mt352.h"
+#include "mt352_priv.h" /* FIXME */
+#include "tda1002x.h"
+#include "drx39xyj/drx39xxj.h"
+#include "tda18271.h"
+#include "s921.h"
+#include "drxd.h"
+#include "cxd2820r.h"
+#include "tda18271c2dd.h"
+#include "drxk.h"
+#include "tda10071.h"
+#include "tda18212.h"
+#include "a8293.h"
+#include "qt1010.h"
+#include "mb86a20s.h"
+#include "m88ds3103.h"
+#include "ts2020.h"
+#include "si2168.h"
+#include "si2157.h"
+#include "tc90522.h"
+#include "qm1d1c0042.h"
+
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION(DRIVER_DESC " - digital TV interface");
+MODULE_VERSION(EM28XX_VERSION);
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+#define dprintk(level, fmt, arg...) do {				\
+	if (debug >= level)						\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "dvb: " fmt, ## arg);			\
+} while (0)
+
+struct em28xx_dvb {
+	struct dvb_frontend        *fe[2];
+
+	/* feed count management */
+	struct mutex               lock;
+	int                        nfeeds;
+
+	/* general boilerplate stuff */
+	struct dvb_adapter         adapter;
+	struct dvb_demux           demux;
+	struct dmxdev              dmxdev;
+	struct dmx_frontend        fe_hw;
+	struct dmx_frontend        fe_mem;
+	struct dvb_net             net;
+
+	/* Due to DRX-K - probably need changes */
+	int (*gate_ctrl)(struct dvb_frontend *fe, int gate);
+	struct semaphore      pll_mutex;
+	bool			dont_attach_fe1;
+	int			lna_gpio;
+	struct i2c_client	*i2c_client_demod;
+	struct i2c_client	*i2c_client_tuner;
+	struct i2c_client	*i2c_client_sec;
+};
+
+static inline void print_err_status(struct em28xx *dev,
+				    int packet, int status)
+{
+	char *errmsg = "Unknown";
+
+	switch (status) {
+	case -ENOENT:
+		errmsg = "unlinked synchronously";
+		break;
+	case -ECONNRESET:
+		errmsg = "unlinked asynchronously";
+		break;
+	case -ENOSR:
+		errmsg = "Buffer error (overrun)";
+		break;
+	case -EPIPE:
+		errmsg = "Stalled (device not responding)";
+		break;
+	case -EOVERFLOW:
+		errmsg = "Babble (bad cable?)";
+		break;
+	case -EPROTO:
+		errmsg = "Bit-stuff error (bad cable?)";
+		break;
+	case -EILSEQ:
+		errmsg = "CRC/Timeout (could be anything)";
+		break;
+	case -ETIME:
+		errmsg = "Device does not respond";
+		break;
+	}
+	if (packet < 0) {
+		dprintk(1, "URB status %d [%s].\n", status, errmsg);
+	} else {
+		dprintk(1, "URB packet %d, status %d [%s].\n",
+			packet, status, errmsg);
+	}
+}
+
+static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
+{
+	int xfer_bulk, num_packets, i;
+
+	if (!dev)
+		return 0;
+
+	if (dev->disconnected)
+		return 0;
+
+	if (urb->status < 0)
+		print_err_status(dev, -1, urb->status);
+
+	xfer_bulk = usb_pipebulk(urb->pipe);
+
+	if (xfer_bulk) /* bulk */
+		num_packets = 1;
+	else /* isoc */
+		num_packets = urb->number_of_packets;
+
+	for (i = 0; i < num_packets; i++) {
+		if (xfer_bulk) {
+			if (urb->status < 0) {
+				print_err_status(dev, i, urb->status);
+				if (urb->status != -EPROTO)
+					continue;
+			}
+			if (!urb->actual_length)
+				continue;
+			dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
+					 urb->actual_length);
+		} else {
+			if (urb->iso_frame_desc[i].status < 0) {
+				print_err_status(dev, i,
+						 urb->iso_frame_desc[i].status);
+				if (urb->iso_frame_desc[i].status != -EPROTO)
+					continue;
+			}
+			if (!urb->iso_frame_desc[i].actual_length)
+				continue;
+			dvb_dmx_swfilter(&dev->dvb->demux,
+					 urb->transfer_buffer +
+					 urb->iso_frame_desc[i].offset,
+					 urb->iso_frame_desc[i].actual_length);
+		}
+	}
+
+	return 0;
+}
+
+static int em28xx_start_streaming(struct em28xx_dvb *dvb)
+{
+	int rc;
+	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
+	struct em28xx *dev = i2c_bus->dev;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int dvb_max_packet_size, packet_multiplier, dvb_alt;
+
+	if (dev->dvb_xfer_bulk) {
+		if (!dev->dvb_ep_bulk)
+			return -ENODEV;
+		dvb_max_packet_size = 512; /* USB 2.0 spec */
+		packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
+		dvb_alt = 0;
+	} else { /* isoc */
+		if (!dev->dvb_ep_isoc)
+			return -ENODEV;
+		dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
+		if (dvb_max_packet_size < 0)
+			return dvb_max_packet_size;
+		packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
+		dvb_alt = dev->dvb_alt_isoc;
+	}
+
+	if (!dev->board.has_dual_ts)
+		usb_set_interface(udev, dev->ifnum, dvb_alt);
+
+	rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
+	if (rc < 0)
+		return rc;
+
+	dprintk(1, "Using %d buffers each with %d x %d bytes, alternate %d\n",
+		EM28XX_DVB_NUM_BUFS,
+		packet_multiplier,
+		dvb_max_packet_size, dvb_alt);
+
+	return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
+				    dev->dvb_xfer_bulk,
+				    EM28XX_DVB_NUM_BUFS,
+				    dvb_max_packet_size,
+				    packet_multiplier,
+				    em28xx_dvb_urb_data_copy);
+}
+
+static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
+{
+	struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
+	struct em28xx *dev = i2c_bus->dev;
+
+	em28xx_stop_urbs(dev);
+
+	return 0;
+}
+
+static int em28xx_start_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux  = feed->demux;
+	struct em28xx_dvb *dvb = demux->priv;
+	int rc, ret;
+
+	if (!demux->dmx.frontend)
+		return -EINVAL;
+
+	mutex_lock(&dvb->lock);
+	dvb->nfeeds++;
+	rc = dvb->nfeeds;
+
+	if (dvb->nfeeds == 1) {
+		ret = em28xx_start_streaming(dvb);
+		if (ret < 0)
+			rc = ret;
+	}
+
+	mutex_unlock(&dvb->lock);
+	return rc;
+}
+
+static int em28xx_stop_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux  = feed->demux;
+	struct em28xx_dvb *dvb = demux->priv;
+	int err = 0;
+
+	mutex_lock(&dvb->lock);
+	dvb->nfeeds--;
+
+	if (!dvb->nfeeds)
+		err = em28xx_stop_streaming(dvb);
+
+	mutex_unlock(&dvb->lock);
+	return err;
+}
+
+/* ------------------------------------------------------------------ */
+static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
+{
+	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
+	struct em28xx *dev = i2c_bus->dev;
+
+	if (acquire)
+		return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
+	else
+		return em28xx_set_mode(dev, EM28XX_SUSPEND);
+}
+
+/* ------------------------------------------------------------------ */
+
+static struct lgdt330x_config em2880_lgdt3303_dev = {
+	.demod_chip = LGDT3303,
+};
+
+static struct lgdt3305_config em2870_lgdt3304_dev = {
+	.i2c_addr           = 0x0e,
+	.demod_chip         = LGDT3304,
+	.spectral_inversion = 1,
+	.deny_i2c_rptr      = 1,
+	.mpeg_mode          = LGDT3305_MPEG_PARALLEL,
+	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
+	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
+	.vsb_if_khz         = 3250,
+	.qam_if_khz         = 4000,
+};
+
+static struct lgdt3305_config em2874_lgdt3305_dev = {
+	.i2c_addr           = 0x0e,
+	.demod_chip         = LGDT3305,
+	.spectral_inversion = 1,
+	.deny_i2c_rptr      = 0,
+	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
+	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
+	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
+	.vsb_if_khz         = 3250,
+	.qam_if_khz         = 4000,
+};
+
+static struct lgdt3305_config em2874_lgdt3305_nogate_dev = {
+	.i2c_addr           = 0x0e,
+	.demod_chip         = LGDT3305,
+	.spectral_inversion = 1,
+	.deny_i2c_rptr      = 1,
+	.mpeg_mode          = LGDT3305_MPEG_SERIAL,
+	.tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
+	.tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
+	.vsb_if_khz         = 3600,
+	.qam_if_khz         = 3600,
+};
+
+static struct s921_config sharp_isdbt = {
+	.demod_address = 0x30 >> 1
+};
+
+static struct zl10353_config em28xx_zl10353_with_xc3028 = {
+	.demod_address = (0x1e >> 1),
+	.no_tuner = 1,
+	.parallel_ts = 1,
+	.if2 = 45600,
+};
+
+static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
+	.demod_address = 0x32 >> 1,
+	.output_mode   = S5H1409_PARALLEL_OUTPUT,
+	.gpio          = S5H1409_GPIO_OFF,
+	.inversion     = S5H1409_INVERSION_OFF,
+	.status_mode   = S5H1409_DEMODLOCKING,
+	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINUOUS_NONINVERTING_CLOCK
+};
+
+static struct tda18271_std_map kworld_a340_std_map = {
+	.atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
+		      .if_lvl = 1, .rfagc_top = 0x37, },
+	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
+		      .if_lvl = 1, .rfagc_top = 0x37, },
+};
+
+static struct tda18271_config kworld_a340_config = {
+	.std_map           = &kworld_a340_std_map,
+};
+
+static struct tda18271_config kworld_ub435q_v2_config = {
+	.std_map	= &kworld_a340_std_map,
+	.gate		= TDA18271_GATE_DIGITAL,
+};
+
+static struct tda18212_config kworld_ub435q_v3_config = {
+	.if_atsc_vsb	= 3600,
+	.if_atsc_qam	= 3600,
+};
+
+static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
+	.demod_address = (0x1e >> 1),
+	.no_tuner = 1,
+	.disable_i2c_gate_ctrl = 1,
+	.parallel_ts = 1,
+	.if2 = 45600,
+};
+
+static struct drxd_config em28xx_drxd = {
+	.demod_address = 0x70,
+	.demod_revision = 0xa2,
+	.pll_type = DRXD_PLL_NONE,
+	.clock = 12000,
+	.insert_rs_byte = 1,
+	.IF = 42800000,
+	.disable_i2c_gate_ctrl = 1,
+};
+
+static struct drxk_config terratec_h5_drxk = {
+	.adr = 0x29,
+	.single_master = 1,
+	.no_i2c_bridge = 1,
+	.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
+	.qam_demod_parameter_count = 2,
+};
+
+static struct drxk_config hauppauge_930c_drxk = {
+	.adr = 0x29,
+	.single_master = 1,
+	.no_i2c_bridge = 1,
+	.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
+	.chunk_size = 56,
+	.qam_demod_parameter_count = 2,
+};
+
+static struct drxk_config terratec_htc_stick_drxk = {
+	.adr = 0x29,
+	.single_master = 1,
+	.no_i2c_bridge = 1,
+	.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
+	.chunk_size = 54,
+	.qam_demod_parameter_count = 2,
+	/* Required for the antenna_gpio to disable LNA. */
+	.antenna_dvbt = true,
+	/* The windows driver uses the same. This will disable LNA. */
+	.antenna_gpio = 0x6,
+};
+
+static struct drxk_config maxmedia_ub425_tc_drxk = {
+	.adr = 0x29,
+	.single_master = 1,
+	.no_i2c_bridge = 1,
+	.microcode_name = "dvb-demod-drxk-01.fw",
+	.chunk_size = 62,
+	.qam_demod_parameter_count = 2,
+};
+
+static struct drxk_config pctv_520e_drxk = {
+	.adr = 0x29,
+	.single_master = 1,
+	.microcode_name = "dvb-demod-drxk-pctv.fw",
+	.qam_demod_parameter_count = 2,
+	.chunk_size = 58,
+	.antenna_dvbt = true, /* disable LNA */
+	.antenna_gpio = (1 << 2), /* disable LNA */
+};
+
+static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct em28xx_dvb *dvb = fe->sec_priv;
+	int status;
+
+	if (!dvb)
+		return -EINVAL;
+
+	if (enable) {
+		down(&dvb->pll_mutex);
+		status = dvb->gate_ctrl(fe, 1);
+	} else {
+		status = dvb->gate_ctrl(fe, 0);
+		up(&dvb->pll_mutex);
+	}
+	return status;
+}
+
+static void hauppauge_hvr930c_init(struct em28xx *dev)
+{
+	int i;
+
+	static const struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
+		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0x65},
+		{EM2874_R80_GPIO_P0_CTRL,	0xfb,	0xff,	0x32},
+		{EM2874_R80_GPIO_P0_CTRL,	0xff,	0xff,	0xb8},
+		{	-1,			-1,	-1,	-1},
+	};
+	static const struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
+		{EM2874_R80_GPIO_P0_CTRL,	0xaf,	0xff,	0x65},
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x76},
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x01},
+		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x40},
+
+		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x65},
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
+		{EM2874_R80_GPIO_P0_CTRL,	0xcf,	0xff,	0x0b},
+		{EM2874_R80_GPIO_P0_CTRL,	0xef,	0xff,	0x65},
+
+		{	-1,			-1,	-1,	-1},
+	};
+
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs[] = {
+		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
+		{{ 0x01, 0x02 }, 2},
+		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
+		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
+		{{ 0x04, 0x00 }, 2},
+		{{ 0x00, 0x04 }, 2},
+		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
+		{{ 0x04, 0x14 }, 2},
+		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
+	};
+
+	em28xx_gpio_set(dev, hauppauge_hvr930c_init);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+	usleep_range(10000, 11000);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
+	usleep_range(10000, 11000);
+
+	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				regs[i].r, regs[i].len);
+	em28xx_gpio_set(dev, hauppauge_hvr930c_end);
+
+	msleep(100);
+
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
+	msleep(30);
+
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
+	usleep_range(10000, 11000);
+}
+
+static void terratec_h5_init(struct em28xx *dev)
+{
+	int i;
+	static const struct em28xx_reg_seq terratec_h5_init[] = {
+		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf2,	0xff,	50},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
+		{	-1,			-1,	-1,	-1},
+	};
+	static const struct em28xx_reg_seq terratec_h5_end[] = {
+		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
+		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
+		{	-1,			-1,	-1,	-1},
+	};
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs[] = {
+		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
+		{{ 0x01, 0x02 }, 2},
+		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
+		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
+		{{ 0x04, 0x00 }, 2},
+		{{ 0x00, 0x04 }, 2},
+		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
+		{{ 0x04, 0x14 }, 2},
+		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
+	};
+
+	em28xx_gpio_set(dev, terratec_h5_init);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+	usleep_range(10000, 11000);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
+	usleep_range(10000, 11000);
+
+	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				regs[i].r, regs[i].len);
+	em28xx_gpio_set(dev, terratec_h5_end);
+};
+
+static void terratec_htc_stick_init(struct em28xx *dev)
+{
+	int i;
+
+	/*
+	 * GPIO configuration:
+	 * 0xff: unknown (does not affect DVB-T).
+	 * 0xf6: DRX-K (demodulator).
+	 * 0xe6: unknown (does not affect DVB-T).
+	 * 0xb6: unknown (does not affect DVB-T).
+	 */
+	static const struct em28xx_reg_seq terratec_htc_stick_init[] = {
+		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	50},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	100},
+		{	-1,			-1,	-1,	-1},
+	};
+	static const struct em28xx_reg_seq terratec_htc_stick_end[] = {
+		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xf6,	0xff,	50},
+		{	-1,			-1,	-1,	-1},
+	};
+
+	/*
+	 * Init the analog decoder (not yet supported), but
+	 * it's probably still a good idea.
+	 */
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs[] = {
+		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
+		{{ 0x01, 0x02 }, 2},
+		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
+	};
+
+	em28xx_gpio_set(dev, terratec_htc_stick_init);
+
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+	usleep_range(10000, 11000);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
+	usleep_range(10000, 11000);
+
+	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				regs[i].r, regs[i].len);
+
+	em28xx_gpio_set(dev, terratec_htc_stick_end);
+};
+
+static void terratec_htc_usb_xs_init(struct em28xx *dev)
+{
+	int i;
+
+	static const struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
+		{EM2820_R08_GPIO_CTRL,		0xff,	0xff,	10},
+		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xb2,	0xff,	50},
+		{EM2874_R80_GPIO_P0_CTRL,	0xb6,	0xff,	100},
+		{	-1,			-1,	-1,	-1},
+	};
+	static const struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
+		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	100},
+		{EM2874_R80_GPIO_P0_CTRL,	0xa6,	0xff,	50},
+		{EM2874_R80_GPIO_P0_CTRL,	0xe6,	0xff,	100},
+		{	-1,			-1,	-1,	-1},
+	};
+
+	/*
+	 * Init the analog decoder (not yet supported), but
+	 * it's probably still a good idea.
+	 */
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs[] = {
+		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
+		{{ 0x01, 0x02 }, 2},
+		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
+		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
+		{{ 0x04, 0x00 }, 2},
+		{{ 0x00, 0x04 }, 2},
+		{{ 0x00, 0x04, 0x00, 0x0a }, 4},
+		{{ 0x04, 0x14 }, 2},
+		{{ 0x04, 0x14, 0x00, 0x00 }, 4},
+	};
+
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+
+	em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
+
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
+	usleep_range(10000, 11000);
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
+	usleep_range(10000, 11000);
+
+	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				regs[i].r, regs[i].len);
+
+	em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
+};
+
+static void pctv_520e_init(struct em28xx *dev)
+{
+	/*
+	 * Init AVF4910B analog decoder. Looks like I2C traffic to
+	 * digital demodulator and tuner are routed via AVF4910B.
+	 */
+	int i;
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs[] = {
+		{{ 0x06, 0x02, 0x00, 0x31 }, 4},
+		{{ 0x01, 0x02 }, 2},
+		{{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0xff, 0xaf }, 4},
+		{{ 0x01, 0x00, 0x03, 0xa0 }, 4},
+		{{ 0x01, 0x00 }, 2},
+		{{ 0x01, 0x00, 0x73, 0xaf }, 4},
+	};
+
+	dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				regs[i].r, regs[i].len);
+};
+
+static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
+	struct em28xx *dev = i2c_bus->dev;
+#ifdef CONFIG_GPIOLIB
+	struct em28xx_dvb *dvb = dev->dvb;
+	int ret;
+	unsigned long flags;
+
+	if (c->lna == 1)
+		flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
+	else
+		flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
+
+	ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
+	if (ret)
+		dev_err(&dev->intf->dev, "gpio request failed %d\n", ret);
+	else
+		gpio_free(dvb->lna_gpio);
+
+	return ret;
+#else
+	dev_warn(&dev->intf->dev, "%s: LNA control is disabled (lna=%u)\n",
+		 KBUILD_MODNAME, c->lna);
+	return 0;
+#endif
+}
+
+static int em28xx_pctv_292e_set_lna(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
+	struct em28xx *dev = i2c_bus->dev;
+	u8 lna;
+
+	if (c->lna == 1)
+		lna = 0x01;
+	else
+		lna = 0x00;
+
+	return em28xx_write_reg_bits(dev, EM2874_R80_GPIO_P0_CTRL, lna, 0x01);
+}
+
+static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
+{
+	/* Values extracted from a USB trace of the Terratec Windows driver */
+	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
+	static u8 reset[]          = { RESET,      0x80 };
+	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
+	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
+	static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
+	static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
+	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
+	static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
+	static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
+	static u8 tuner_go[]       = { TUNER_GO, 0x01};
+
+	mt352_write(fe, clock_config,   sizeof(clock_config));
+	usleep_range(200, 250);
+	mt352_write(fe, reset,          sizeof(reset));
+	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
+	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
+	mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
+	mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
+	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
+	mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
+	mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
+	mt352_write(fe, tuner_go,       sizeof(tuner_go));
+	return 0;
+}
+
+static void px_bcud_init(struct em28xx *dev)
+{
+	int i;
+	static const struct {
+		unsigned char r[4];
+		int len;
+	} regs1[] = {
+		{{ 0x0e, 0x77 }, 2},
+		{{ 0x0f, 0x77 }, 2},
+		{{ 0x03, 0x90 }, 2},
+	}, regs2[] = {
+		{{ 0x07, 0x01 }, 2},
+		{{ 0x08, 0x10 }, 2},
+		{{ 0x13, 0x00 }, 2},
+		{{ 0x17, 0x00 }, 2},
+		{{ 0x03, 0x01 }, 2},
+		{{ 0x10, 0xb1 }, 2},
+		{{ 0x11, 0x40 }, 2},
+		{{ 0x85, 0x7a }, 2},
+		{{ 0x87, 0x04 }, 2},
+	};
+	static const struct em28xx_reg_seq gpio[] = {
+		{EM28XX_R06_I2C_CLK,		0x40,	0xff,	300},
+		{EM2874_R80_GPIO_P0_CTRL,	0xfd,	0xff,	60},
+		{EM28XX_R15_RGAIN,		0x20,	0xff,	0},
+		{EM28XX_R16_GGAIN,		0x20,	0xff,	0},
+		{EM28XX_R17_BGAIN,		0x20,	0xff,	0},
+		{EM28XX_R18_ROFFSET,		0x00,	0xff,	0},
+		{EM28XX_R19_GOFFSET,		0x00,	0xff,	0},
+		{EM28XX_R1A_BOFFSET,		0x00,	0xff,	0},
+		{EM28XX_R23_UOFFSET,		0x00,	0xff,	0},
+		{EM28XX_R24_VOFFSET,		0x00,	0xff,	0},
+		{EM28XX_R26_COMPR,		0x00,	0xff,	0},
+		{0x13,				0x08,	0xff,	0},
+		{EM28XX_R12_VINENABLE,		0x27,	0xff,	0},
+		{EM28XX_R0C_USBSUSP,		0x10,	0xff,	0},
+		{EM28XX_R27_OUTFMT,		0x00,	0xff,	0},
+		{EM28XX_R10_VINMODE,		0x00,	0xff,	0},
+		{EM28XX_R11_VINCTRL,		0x11,	0xff,	0},
+		{EM2874_R50_IR_CONFIG,		0x01,	0xff,	0},
+		{EM2874_R5F_TS_ENABLE,		0x80,	0xff,	0},
+		{EM28XX_R06_I2C_CLK,		0x46,	0xff,	0},
+	};
+	em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x46);
+	/* sleeping ISDB-T */
+	dev->dvb->i2c_client_demod->addr = 0x14;
+	for (i = 0; i < ARRAY_SIZE(regs1); i++)
+		i2c_master_send(dev->dvb->i2c_client_demod,
+				regs1[i].r, regs1[i].len);
+	/* sleeping ISDB-S */
+	dev->dvb->i2c_client_demod->addr = 0x15;
+	for (i = 0; i < ARRAY_SIZE(regs2); i++)
+		i2c_master_send(dev->dvb->i2c_client_demod, regs2[i].r,
+				regs2[i].len);
+	for (i = 0; i < ARRAY_SIZE(gpio); i++) {
+		em28xx_write_reg_bits(dev, gpio[i].reg, gpio[i].val,
+				      gpio[i].mask);
+		if (gpio[i].sleep > 0)
+			msleep(gpio[i].sleep);
+	}
+};
+
+static struct mt352_config terratec_xs_mt352_cfg = {
+	.demod_address = (0x1e >> 1),
+	.no_tuner = 1,
+	.if2 = 45600,
+	.demod_init = em28xx_mt352_terratec_xs_init,
+};
+
+static struct tda10023_config em28xx_tda10023_config = {
+	.demod_address = 0x0c,
+	.invert = 1,
+};
+
+static struct cxd2820r_config em28xx_cxd2820r_config = {
+	.i2c_address = (0xd8 >> 1),
+	.ts_mode = CXD2820R_TS_SERIAL,
+};
+
+static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
+	.output_opt = TDA18271_OUTPUT_LT_OFF,
+	.gate = TDA18271_GATE_DIGITAL,
+};
+
+static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
+	.demod_address = (0x1e >> 1),
+	.disable_i2c_gate_ctrl = 1,
+	.no_tuner = 1,
+	.parallel_ts = 1,
+};
+
+static struct mt2060_config em28xx_mt2060_config = {
+	.i2c_address = 0x60,
+};
+
+static struct qt1010_config em28xx_qt1010_config = {
+	.i2c_address = 0x62
+};
+
+static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
+	.demod_address = 0x10,
+	.is_serial = true,
+};
+
+static struct tda18271_std_map mb86a20s_tda18271_config = {
+	.dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
+		      .if_lvl = 1, .rfagc_top = 0x37, },
+};
+
+static struct tda18271_config c3tech_duo_tda18271_config = {
+	.std_map = &mb86a20s_tda18271_config,
+	.gate    = TDA18271_GATE_DIGITAL,
+	.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
+};
+
+static struct tda18271_std_map drx_j_std_map = {
+	.atsc_6   = { .if_freq = 5000, .agc_mode = 3, .std = 0, .if_lvl = 1,
+		      .rfagc_top = 0x37, },
+	.qam_6    = { .if_freq = 5380, .agc_mode = 3, .std = 3, .if_lvl = 1,
+		      .rfagc_top = 0x37, },
+};
+
+static struct tda18271_config pinnacle_80e_dvb_config = {
+	.std_map = &drx_j_std_map,
+	.gate    = TDA18271_GATE_DIGITAL,
+	.role    = TDA18271_MASTER,
+};
+
+static struct lgdt3306a_config hauppauge_01595_lgdt3306a_config = {
+	.qam_if_khz         = 4000,
+	.vsb_if_khz         = 3250,
+	.spectral_inversion = 0,
+	.deny_i2c_rptr      = 0,
+	.mpeg_mode          = LGDT3306A_MPEG_SERIAL,
+	.tpclk_edge         = LGDT3306A_TPCLK_RISING_EDGE,
+	.tpvalid_polarity   = LGDT3306A_TP_VALID_HIGH,
+	.xtalMHz            = 25,
+};
+
+/* ------------------------------------------------------------------ */
+
+static noinline_for_stack int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
+{
+	struct dvb_frontend *fe;
+	struct xc2028_config cfg;
+	struct xc2028_ctrl ctl;
+
+	memset(&cfg, 0, sizeof(cfg));
+	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
+	cfg.i2c_addr  = addr;
+
+	memset(&ctl, 0, sizeof(ctl));
+	em28xx_setup_xc3028(dev, &ctl);
+	cfg.ctrl  = &ctl;
+
+	if (!dev->dvb->fe[0]) {
+		dev_err(&dev->intf->dev,
+			"dvb frontend not attached. Can't attach xc3028\n");
+		return -EINVAL;
+	}
+
+	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
+	if (!fe) {
+		dev_err(&dev->intf->dev, "xc3028 attach failed\n");
+		dvb_frontend_detach(dev->dvb->fe[0]);
+		dev->dvb->fe[0] = NULL;
+		return -EINVAL;
+	}
+
+	dev_info(&dev->intf->dev, "xc3028 attached\n");
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
+			       struct em28xx *dev, struct device *device)
+{
+	int result;
+	bool create_rf_connector = false;
+
+	mutex_init(&dvb->lock);
+
+	/* register adapter */
+	result = dvb_register_adapter(&dvb->adapter,
+				      dev_name(&dev->intf->dev), module,
+				      device, adapter_nr);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "dvb_register_adapter failed (errno = %d)\n",
+			 result);
+		goto fail_adapter;
+	}
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	dvb->adapter.mdev = dev->media_dev;
+#endif
+
+	/* Ensure all frontends negotiate bus access */
+	dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
+	if (dvb->fe[1])
+		dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
+
+	dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
+
+	/* register frontend */
+	result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "dvb_register_frontend failed (errno = %d)\n",
+			 result);
+		goto fail_frontend0;
+	}
+
+	/* register 2nd frontend */
+	if (dvb->fe[1]) {
+		result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
+		if (result < 0) {
+			dev_warn(&dev->intf->dev,
+				 "2nd dvb_register_frontend failed (errno = %d)\n",
+				 result);
+			goto fail_frontend1;
+		}
+	}
+
+	/* register demux stuff */
+	dvb->demux.dmx.capabilities =
+		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
+		DMX_MEMORY_BASED_FILTERING;
+	dvb->demux.priv       = dvb;
+	dvb->demux.filternum  = 256;
+	dvb->demux.feednum    = 256;
+	dvb->demux.start_feed = em28xx_start_feed;
+	dvb->demux.stop_feed  = em28xx_stop_feed;
+
+	result = dvb_dmx_init(&dvb->demux);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "dvb_dmx_init failed (errno = %d)\n",
+			 result);
+		goto fail_dmx;
+	}
+
+	dvb->dmxdev.filternum    = 256;
+	dvb->dmxdev.demux        = &dvb->demux.dmx;
+	dvb->dmxdev.capabilities = 0;
+	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "dvb_dmxdev_init failed (errno = %d)\n",
+			 result);
+		goto fail_dmxdev;
+	}
+
+	dvb->fe_hw.source = DMX_FRONTEND_0;
+	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
+			 result);
+		goto fail_fe_hw;
+	}
+
+	dvb->fe_mem.source = DMX_MEMORY_FE;
+	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
+			 result);
+		goto fail_fe_mem;
+	}
+
+	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+	if (result < 0) {
+		dev_warn(&dev->intf->dev,
+			 "connect_frontend failed (errno = %d)\n",
+			 result);
+		goto fail_fe_conn;
+	}
+
+	/* register network adapter */
+	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
+
+	/* If the analog part won't create RF connectors, DVB will do it */
+	if (!dev->has_video || dev->tuner_type == TUNER_ABSENT)
+		create_rf_connector = true;
+
+	result = dvb_create_media_graph(&dvb->adapter, create_rf_connector);
+	if (result < 0)
+		goto fail_create_graph;
+
+	return 0;
+
+fail_create_graph:
+	dvb_net_release(&dvb->net);
+fail_fe_conn:
+	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+fail_fe_mem:
+	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+fail_fe_hw:
+	dvb_dmxdev_release(&dvb->dmxdev);
+fail_dmxdev:
+	dvb_dmx_release(&dvb->demux);
+fail_dmx:
+	if (dvb->fe[1])
+		dvb_unregister_frontend(dvb->fe[1]);
+	dvb_unregister_frontend(dvb->fe[0]);
+fail_frontend1:
+	if (dvb->fe[1])
+		dvb_frontend_detach(dvb->fe[1]);
+fail_frontend0:
+	dvb_frontend_detach(dvb->fe[0]);
+	dvb_unregister_adapter(&dvb->adapter);
+fail_adapter:
+	return result;
+}
+
+static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
+{
+	dvb_net_release(&dvb->net);
+	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+	dvb_dmxdev_release(&dvb->dmxdev);
+	dvb_dmx_release(&dvb->demux);
+	if (dvb->fe[1])
+		dvb_unregister_frontend(dvb->fe[1]);
+	dvb_unregister_frontend(dvb->fe[0]);
+	if (dvb->fe[1] && !dvb->dont_attach_fe1)
+		dvb_frontend_detach(dvb->fe[1]);
+	dvb_frontend_detach(dvb->fe[0]);
+	dvb_unregister_adapter(&dvb->adapter);
+}
+
+static int em28174_dvb_init_pctv_460e(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct tda10071_platform_data tda10071_pdata = {};
+	struct a8293_platform_data a8293_pdata = {};
+
+	/* attach demod + tuner combo */
+	tda10071_pdata.clk = 40444000; /* 40.444 MHz */
+	tda10071_pdata.i2c_wr_max = 64;
+	tda10071_pdata.ts_mode = TDA10071_TS_SERIAL;
+	tda10071_pdata.pll_multiplier = 20;
+	tda10071_pdata.tuner_i2c_addr = 0x14;
+
+	dvb->i2c_client_demod = dvb_module_probe("tda10071", "tda10071_cx24118",
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x55, &tda10071_pdata);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	dvb->fe[0] = tda10071_pdata.get_dvb_frontend(dvb->i2c_client_demod);
+
+	/* attach SEC */
+	a8293_pdata.dvb_frontend = dvb->fe[0];
+
+	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
+					       &dev->i2c_adap[dev->def_i2c_bus],
+					       0x08, &a8293_pdata);
+	if (!dvb->i2c_client_sec) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28178_dvb_init_pctv_461e(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *i2c_adapter;
+	struct m88ds3103_platform_data m88ds3103_pdata = {};
+	struct ts2020_config ts2020_config = {};
+	struct a8293_platform_data a8293_pdata = {};
+
+	/* attach demod */
+	m88ds3103_pdata.clk = 27000000;
+	m88ds3103_pdata.i2c_wr_max = 33;
+	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
+	m88ds3103_pdata.ts_clk = 16000;
+	m88ds3103_pdata.ts_clk_pol = 1;
+	m88ds3103_pdata.agc = 0x99;
+
+	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x68, &m88ds3103_pdata);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
+	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
+
+	/* attach tuner */
+	ts2020_config.fe = dvb->fe[0];
+
+	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
+						 i2c_adapter,
+						 0x60, &ts2020_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	/* delegate signal strength measurement to tuner */
+	dvb->fe[0]->ops.read_signal_strength =
+			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
+
+	/* attach SEC */
+	a8293_pdata.dvb_frontend = dvb->fe[0];
+	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
+					       &dev->i2c_adap[dev->def_i2c_bus],
+					       0x08, &a8293_pdata);
+	if (!dvb->i2c_client_sec) {
+		dvb_module_release(dvb->i2c_client_tuner);
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28178_dvb_init_pctv_461e_v2(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *i2c_adapter;
+	struct m88ds3103_platform_data m88ds3103_pdata = {};
+	struct ts2020_config ts2020_config = {};
+	struct a8293_platform_data a8293_pdata = {};
+
+	/* attach demod */
+	m88ds3103_pdata.clk = 27000000;
+	m88ds3103_pdata.i2c_wr_max = 33;
+	m88ds3103_pdata.ts_mode = M88DS3103_TS_PARALLEL;
+	m88ds3103_pdata.ts_clk = 16000;
+	m88ds3103_pdata.ts_clk_pol = 0;
+	m88ds3103_pdata.agc = 0x99;
+	m88ds3103_pdata.agc_inv = 0;
+	m88ds3103_pdata.spec_inv = 0;
+	dvb->i2c_client_demod = dvb_module_probe("m88ds3103", "m88ds3103b",
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x6a, &m88ds3103_pdata);
+
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	dvb->fe[0] = m88ds3103_pdata.get_dvb_frontend(dvb->i2c_client_demod);
+	i2c_adapter = m88ds3103_pdata.get_i2c_adapter(dvb->i2c_client_demod);
+
+	/* attach tuner */
+	ts2020_config.fe = dvb->fe[0];
+	dvb->i2c_client_tuner = dvb_module_probe("ts2020", "ts2022",
+						 i2c_adapter,
+						 0x60, &ts2020_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	/* delegate signal strength measurement to tuner */
+	dvb->fe[0]->ops.read_signal_strength =
+			dvb->fe[0]->ops.tuner_ops.get_rf_strength;
+
+	/* attach SEC */
+	a8293_pdata.dvb_frontend = dvb->fe[0];
+	dvb->i2c_client_sec = dvb_module_probe("a8293", NULL,
+					       &dev->i2c_adap[dev->def_i2c_bus],
+					       0x08, &a8293_pdata);
+	if (!dvb->i2c_client_sec) {
+		dvb_module_release(dvb->i2c_client_tuner);
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28178_dvb_init_pctv_292e(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *adapter;
+	struct si2168_config si2168_config = {};
+	struct si2157_config si2157_config = {};
+
+	/* attach demod */
+	si2168_config.i2c_adapter = &adapter;
+	si2168_config.fe = &dvb->fe[0];
+	si2168_config.ts_mode = SI2168_TS_PARALLEL;
+	si2168_config.spectral_inversion = true;
+
+	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x64, &si2168_config);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	/* attach tuner */
+	si2157_config.fe = dvb->fe[0];
+	si2157_config.if_port = 1;
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	si2157_config.mdev = dev->media_dev;
+#endif
+	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
+						 adapter,
+						 0x60, &si2157_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+	dvb->fe[0]->ops.set_lna = em28xx_pctv_292e_set_lna;
+
+	return 0;
+}
+
+static int em28178_dvb_init_terratec_t2_stick_hd(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *adapter;
+	struct si2168_config si2168_config = {};
+	struct si2157_config si2157_config = {};
+
+	/* attach demod */
+	si2168_config.i2c_adapter = &adapter;
+	si2168_config.fe = &dvb->fe[0];
+	si2168_config.ts_mode = SI2168_TS_PARALLEL;
+
+	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x64, &si2168_config);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	/* attach tuner */
+	memset(&si2157_config, 0, sizeof(si2157_config));
+	si2157_config.fe = dvb->fe[0];
+	si2157_config.if_port = 0;
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	si2157_config.mdev = dev->media_dev;
+#endif
+	dvb->i2c_client_tuner = dvb_module_probe("si2157", "si2146",
+						 adapter,
+						 0x60, &si2157_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28178_dvb_init_plex_px_bcud(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct tc90522_config tc90522_config = {};
+	struct qm1d1c0042_config qm1d1c0042_config = {};
+
+	/* attach demod */
+	dvb->i2c_client_demod = dvb_module_probe("tc90522", "tc90522sat",
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 0x15, &tc90522_config);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	/* attach tuner */
+	qm1d1c0042_config.fe = tc90522_config.fe;
+	qm1d1c0042_config.lpf = 1;
+
+	dvb->i2c_client_tuner = dvb_module_probe("qm1d1c0042", NULL,
+						 tc90522_config.tuner_i2c,
+						 0x61, &qm1d1c0042_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	dvb->fe[0] = tc90522_config.fe;
+	px_bcud_init(dev);
+
+	return 0;
+}
+
+static int em28174_dvb_init_hauppauge_wintv_dualhd_dvb(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *adapter;
+	struct si2168_config si2168_config = {};
+	struct si2157_config si2157_config = {};
+	unsigned char addr;
+
+	/* attach demod */
+	si2168_config.i2c_adapter = &adapter;
+	si2168_config.fe = &dvb->fe[0];
+	si2168_config.ts_mode = SI2168_TS_SERIAL;
+	si2168_config.spectral_inversion = true;
+	addr = (dev->ts == PRIMARY_TS) ? 0x64 : 0x67;
+
+	dvb->i2c_client_demod = dvb_module_probe("si2168", NULL,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 addr, &si2168_config);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	/* attach tuner */
+	memset(&si2157_config, 0, sizeof(si2157_config));
+	si2157_config.fe = dvb->fe[0];
+	si2157_config.if_port = 1;
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	si2157_config.mdev = dev->media_dev;
+#endif
+	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x63;
+
+	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
+						 adapter,
+						 addr, &si2157_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28174_dvb_init_hauppauge_wintv_dualhd_01595(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb = dev->dvb;
+	struct i2c_adapter *adapter;
+	struct lgdt3306a_config lgdt3306a_config =  {};
+	struct si2157_config si2157_config = {};
+	unsigned char addr;
+
+	/* attach demod */
+	lgdt3306a_config = hauppauge_01595_lgdt3306a_config;
+	lgdt3306a_config.fe = &dvb->fe[0];
+	lgdt3306a_config.i2c_adapter = &adapter;
+	addr = (dev->ts == PRIMARY_TS) ? 0x59 : 0x0e;
+
+	dvb->i2c_client_demod = dvb_module_probe("lgdt3306a", NULL,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 addr, &lgdt3306a_config);
+	if (!dvb->i2c_client_demod)
+		return -ENODEV;
+
+	/* attach tuner */
+	si2157_config.fe = dvb->fe[0];
+	si2157_config.if_port = 1;
+	si2157_config.inversion = 1;
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	si2157_config.mdev = dev->media_dev;
+#endif
+	addr = (dev->ts == PRIMARY_TS) ? 0x60 : 0x62;
+
+	dvb->i2c_client_tuner = dvb_module_probe("si2157", NULL,
+						 adapter,
+						 addr, &si2157_config);
+	if (!dvb->i2c_client_tuner) {
+		dvb_module_release(dvb->i2c_client_demod);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int em28xx_dvb_init(struct em28xx *dev)
+{
+	int result = 0, dvb_alt = 0;
+	struct em28xx_dvb *dvb;
+	struct usb_device *udev;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	if (!dev->board.has_dvb) {
+		/* This device does not support the extension */
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Binding DVB extension\n");
+
+	dvb = kzalloc(sizeof(*dvb), GFP_KERNEL);
+	if (!dvb)
+		return -ENOMEM;
+
+	dev->dvb = dvb;
+	dvb->fe[0] = NULL;
+	dvb->fe[1] = NULL;
+
+	/* pre-allocate DVB usb transfer buffers */
+	if (dev->dvb_xfer_bulk) {
+		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
+					   dev->dvb_xfer_bulk,
+					   EM28XX_DVB_NUM_BUFS,
+					   512,
+					   EM28XX_DVB_BULK_PACKET_MULTIPLIER);
+	} else {
+		result = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
+					   dev->dvb_xfer_bulk,
+					   EM28XX_DVB_NUM_BUFS,
+					   dev->dvb_max_pkt_size_isoc,
+					   EM28XX_DVB_NUM_ISOC_PACKETS);
+	}
+	if (result) {
+		dev_err(&dev->intf->dev,
+			"failed to pre-allocate USB transfer buffers for DVB.\n");
+		kfree(dvb);
+		dev->dvb = NULL;
+		return result;
+	}
+
+	mutex_lock(&dev->lock);
+	em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
+	/* init frontend */
+	switch (dev->model) {
+	case EM2874_BOARD_LEADERSHIP_ISDBT:
+		dvb->fe[0] = dvb_attach(s921_attach,
+					&sharp_isdbt,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+
+		break;
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
+	case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
+	case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
+	case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
+		dvb->fe[0] = dvb_attach(lgdt330x_attach,
+					&em2880_lgdt3303_dev,
+					0x0e,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2880_BOARD_KWORLD_DVB_310U:
+		dvb->fe[0] = dvb_attach(zl10353_attach,
+					&em28xx_zl10353_with_xc3028,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
+	case EM2882_BOARD_TERRATEC_HYBRID_XS:
+	case EM2880_BOARD_EMPIRE_DUAL_TV:
+	case EM2882_BOARD_ZOLID_HYBRID_TV_STICK:
+		dvb->fe[0] = dvb_attach(zl10353_attach,
+					&em28xx_zl10353_xc3028_no_i2c_gate,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2880_BOARD_TERRATEC_HYBRID_XS:
+	case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
+	case EM2881_BOARD_PINNACLE_HYBRID_PRO:
+	case EM2882_BOARD_DIKOM_DK300:
+	case EM2882_BOARD_KWORLD_VS_DVBT:
+		/*
+		 * Those boards could have either a zl10353 or a mt352.
+		 * If the chip id isn't for zl10353, try mt352.
+		 */
+		dvb->fe[0] = dvb_attach(zl10353_attach,
+					&em28xx_zl10353_xc3028_no_i2c_gate,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0])
+			dvb->fe[0] = dvb_attach(mt352_attach,
+						&terratec_xs_mt352_cfg,
+						&dev->i2c_adap[dev->def_i2c_bus]);
+
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2870_BOARD_TERRATEC_XS_MT2060:
+		dvb->fe[0] = dvb_attach(zl10353_attach,
+					&em28xx_zl10353_no_i2c_gate_dev,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (dvb->fe[0]) {
+			dvb_attach(mt2060_attach, dvb->fe[0],
+				   &dev->i2c_adap[dev->def_i2c_bus],
+				   &em28xx_mt2060_config, 1220);
+		}
+		break;
+	case EM2870_BOARD_KWORLD_355U:
+		dvb->fe[0] = dvb_attach(zl10353_attach,
+					&em28xx_zl10353_no_i2c_gate_dev,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (dvb->fe[0])
+			dvb_attach(qt1010_attach, dvb->fe[0],
+				   &dev->i2c_adap[dev->def_i2c_bus],
+				   &em28xx_qt1010_config);
+		break;
+	case EM2883_BOARD_KWORLD_HYBRID_330U:
+	case EM2882_BOARD_EVGA_INDTUBE:
+		dvb->fe[0] = dvb_attach(s5h1409_attach,
+					&em28xx_s5h1409_with_xc3028,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2882_BOARD_KWORLD_ATSC_315U:
+		dvb->fe[0] = dvb_attach(lgdt330x_attach,
+					&em2880_lgdt3303_dev,
+					0x0e,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (dvb->fe[0]) {
+			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
+					&dev->i2c_adap[dev->def_i2c_bus],
+					0x61, TUNER_THOMSON_DTT761X)) {
+				result = -EINVAL;
+				goto out_free;
+			}
+		}
+		break;
+	case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
+	case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
+		dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					&dev->intf->dev);
+		if (em28xx_attach_xc3028(0x61, dev) < 0) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
+		/* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
+		dvb->fe[0] = dvb_attach(tda10023_attach,
+					&em28xx_tda10023_config,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					0x48);
+		if (dvb->fe[0]) {
+			if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
+					&dev->i2c_adap[dev->def_i2c_bus],
+					0x60, TUNER_PHILIPS_CU1216L)) {
+				result = -EINVAL;
+				goto out_free;
+			}
+		}
+		break;
+	case EM2870_BOARD_KWORLD_A340:
+		dvb->fe[0] = dvb_attach(lgdt3305_attach,
+					&em2870_lgdt3304_dev,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+				&dev->i2c_adap[dev->def_i2c_bus],
+				&kworld_a340_config)) {
+			dvb_frontend_detach(dvb->fe[0]);
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM28174_BOARD_PCTV_290E:
+		/* set default GPIO0 for LNA, used if GPIOLIB is undefined */
+		dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
+				CXD2820R_GPIO_L;
+		dvb->fe[0] = dvb_attach(cxd2820r_attach,
+					&em28xx_cxd2820r_config,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					&dvb->lna_gpio);
+		if (dvb->fe[0]) {
+			/* FE 0 attach tuner */
+			if (!dvb_attach(tda18271_attach,
+					dvb->fe[0],
+					0x60,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					&em28xx_cxd2820r_tda18271_config)) {
+				dvb_frontend_detach(dvb->fe[0]);
+				result = -EINVAL;
+				goto out_free;
+			}
+
+#ifdef CONFIG_GPIOLIB
+			/* enable LNA for DVB-T, DVB-T2 and DVB-C */
+			result = gpio_request_one(dvb->lna_gpio,
+						  GPIOF_OUT_INIT_LOW, NULL);
+			if (result)
+				dev_err(&dev->intf->dev,
+					"gpio request failed %d\n",
+					result);
+			else
+				gpio_free(dvb->lna_gpio);
+
+			result = 0; /* continue even set LNA fails */
+#endif
+			dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
+		}
+
+		break;
+	case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
+	{
+		struct xc5000_config cfg = {};
+
+		hauppauge_hvr930c_init(dev);
+
+		dvb->fe[0] = dvb_attach(drxk_attach,
+					&hauppauge_930c_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		/* FIXME: do we need a pll semaphore? */
+		dvb->fe[0]->sec_priv = dvb;
+		sema_init(&dvb->pll_mutex, 1);
+		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
+		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
+
+		/* Attach xc5000 */
+		cfg.i2c_address  = 0x61;
+		cfg.if_khz = 4000;
+
+		if (dvb->fe[0]->ops.i2c_gate_ctrl)
+			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
+		if (!dvb_attach(xc5000_attach, dvb->fe[0],
+				&dev->i2c_adap[dev->def_i2c_bus], &cfg)) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		if (dvb->fe[0]->ops.i2c_gate_ctrl)
+			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
+
+		break;
+	}
+	case EM2884_BOARD_TERRATEC_H5:
+		terratec_h5_init(dev);
+
+		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		/* FIXME: do we need a pll semaphore? */
+		dvb->fe[0]->sec_priv = dvb;
+		sema_init(&dvb->pll_mutex, 1);
+		dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
+		dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
+
+		/* Attach tda18271 to DVB-C frontend */
+		if (dvb->fe[0]->ops.i2c_gate_ctrl)
+			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
+		if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
+				&dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		if (dvb->fe[0]->ops.i2c_gate_ctrl)
+			dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
+
+		break;
+	case EM2884_BOARD_C3TECH_DIGITAL_DUO:
+		dvb->fe[0] = dvb_attach(mb86a20s_attach,
+					&c3tech_duo_mb86a20s_config,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (dvb->fe[0])
+			dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+				   &dev->i2c_adap[dev->def_i2c_bus],
+				   &c3tech_duo_tda18271_config);
+		break;
+	case EM28174_BOARD_PCTV_460E:
+		result = em28174_dvb_init_pctv_460e(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM2874_BOARD_DELOCK_61959:
+	case EM2874_BOARD_MAXMEDIA_UB425_TC:
+		/* attach demodulator */
+		dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+
+		if (dvb->fe[0]) {
+			/* disable I2C-gate */
+			dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
+
+			/* attach tuner */
+			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					&em28xx_cxd2820r_tda18271_config)) {
+				dvb_frontend_detach(dvb->fe[0]);
+				result = -EINVAL;
+				goto out_free;
+			}
+		}
+		break;
+	case EM2884_BOARD_PCTV_510E:
+	case EM2884_BOARD_PCTV_520E:
+		pctv_520e_init(dev);
+
+		/* attach demodulator */
+		dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+
+		if (dvb->fe[0]) {
+			/* attach tuner */
+			if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+					&dev->i2c_adap[dev->def_i2c_bus],
+					&em28xx_cxd2820r_tda18271_config)) {
+				dvb_frontend_detach(dvb->fe[0]);
+				result = -EINVAL;
+				goto out_free;
+			}
+		}
+		break;
+	case EM2884_BOARD_ELGATO_EYETV_HYBRID_2008:
+	case EM2884_BOARD_CINERGY_HTC_STICK:
+	case EM2884_BOARD_TERRATEC_H6:
+		terratec_htc_stick_init(dev);
+
+		/* attach demodulator */
+		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+
+		/* Attach the demodulator. */
+		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+				&dev->i2c_adap[dev->def_i2c_bus],
+				&em28xx_cxd2820r_tda18271_config)) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2884_BOARD_TERRATEC_HTC_USB_XS:
+		terratec_htc_usb_xs_init(dev);
+
+		/* attach demodulator */
+		dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+
+		/* Attach the demodulator. */
+		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+				&dev->i2c_adap[dev->def_i2c_bus],
+				&em28xx_cxd2820r_tda18271_config)) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2874_BOARD_KWORLD_UB435Q_V2:
+		dvb->fe[0] = dvb_attach(lgdt3305_attach,
+					&em2874_lgdt3305_dev,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+
+		/* Attach the demodulator. */
+		if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+				&dev->i2c_adap[dev->def_i2c_bus],
+				&kworld_ub435q_v2_config)) {
+			result = -EINVAL;
+			goto out_free;
+		}
+		break;
+	case EM2874_BOARD_KWORLD_UB435Q_V3:
+	{
+		struct i2c_adapter *adapter = &dev->i2c_adap[dev->def_i2c_bus];
+
+		dvb->fe[0] = dvb_attach(lgdt3305_attach,
+					&em2874_lgdt3305_nogate_dev,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (!dvb->fe[0]) {
+			result = -EINVAL;
+			goto out_free;
+		}
+
+		/* attach tuner */
+		kworld_ub435q_v3_config.fe = dvb->fe[0];
+
+		dvb->i2c_client_tuner = dvb_module_probe("tda18212", NULL,
+							 adapter, 0x60,
+							 &kworld_ub435q_v3_config);
+		if (!dvb->i2c_client_tuner) {
+			dvb_frontend_detach(dvb->fe[0]);
+			result = -ENODEV;
+			goto out_free;
+		}
+		break;
+	}
+	case EM2874_BOARD_PCTV_HD_MINI_80E:
+		dvb->fe[0] = dvb_attach(drx39xxj_attach,
+					&dev->i2c_adap[dev->def_i2c_bus]);
+		if (dvb->fe[0]) {
+			dvb->fe[0] = dvb_attach(tda18271_attach, dvb->fe[0],
+						0x60,
+						&dev->i2c_adap[dev->def_i2c_bus],
+						&pinnacle_80e_dvb_config);
+			if (!dvb->fe[0]) {
+				result = -EINVAL;
+				goto out_free;
+			}
+		}
+		break;
+	case EM28178_BOARD_PCTV_461E:
+		result = em28178_dvb_init_pctv_461e(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28178_BOARD_PCTV_461E_V2:
+		result = em28178_dvb_init_pctv_461e_v2(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28178_BOARD_PCTV_292E:
+		result = em28178_dvb_init_pctv_292e(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28178_BOARD_TERRATEC_T2_STICK_HD:
+		result = em28178_dvb_init_terratec_t2_stick_hd(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28178_BOARD_PLEX_PX_BCUD:
+		result = em28178_dvb_init_plex_px_bcud(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB:
+		result = em28174_dvb_init_hauppauge_wintv_dualhd_dvb(dev);
+		if (result)
+			goto out_free;
+		break;
+	case EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595:
+		result = em28174_dvb_init_hauppauge_wintv_dualhd_01595(dev);
+		if (result)
+			goto out_free;
+		break;
+	default:
+		dev_err(&dev->intf->dev,
+			"The frontend of your DVB/ATSC card isn't supported yet\n");
+		break;
+	}
+	if (!dvb->fe[0]) {
+		dev_err(&dev->intf->dev, "frontend initialization failed\n");
+		result = -EINVAL;
+		goto out_free;
+	}
+	/* define general-purpose callback pointer */
+	dvb->fe[0]->callback = em28xx_tuner_callback;
+	if (dvb->fe[1])
+		dvb->fe[1]->callback = em28xx_tuner_callback;
+
+	/* register everything */
+	result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->intf->dev);
+
+	if (result < 0)
+		goto out_free;
+
+	if (dev->dvb_xfer_bulk) {
+		dvb_alt = 0;
+	} else { /* isoc */
+		dvb_alt = dev->dvb_alt_isoc;
+	}
+
+	udev = interface_to_usbdev(dev->intf);
+	usb_set_interface(udev, dev->ifnum, dvb_alt);
+	dev_info(&dev->intf->dev, "DVB extension successfully initialized\n");
+
+	kref_get(&dev->ref);
+
+ret:
+	em28xx_set_mode(dev, EM28XX_SUSPEND);
+	mutex_unlock(&dev->lock);
+	return result;
+
+out_free:
+	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
+	kfree(dvb);
+	dev->dvb = NULL;
+	goto ret;
+}
+
+static inline void prevent_sleep(struct dvb_frontend_ops *ops)
+{
+	ops->set_voltage = NULL;
+	ops->sleep = NULL;
+	ops->tuner_ops.sleep = NULL;
+}
+
+static int em28xx_dvb_fini(struct em28xx *dev)
+{
+	struct em28xx_dvb *dvb;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	if (!dev->board.has_dvb) {
+		/* This device does not support the extension */
+		return 0;
+	}
+
+	if (!dev->dvb)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Closing DVB extension\n");
+
+	dvb = dev->dvb;
+
+	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
+
+	if (dev->disconnected) {
+		/*
+		 * We cannot tell the device to sleep
+		 * once it has been unplugged.
+		 */
+		if (dvb->fe[0]) {
+			prevent_sleep(&dvb->fe[0]->ops);
+			dvb->fe[0]->exit = DVB_FE_DEVICE_REMOVED;
+		}
+		if (dvb->fe[1]) {
+			prevent_sleep(&dvb->fe[1]->ops);
+			dvb->fe[1]->exit = DVB_FE_DEVICE_REMOVED;
+		}
+	}
+
+	em28xx_unregister_dvb(dvb);
+
+	/* release I2C module bindings */
+	dvb_module_release(dvb->i2c_client_sec);
+	dvb_module_release(dvb->i2c_client_tuner);
+	dvb_module_release(dvb->i2c_client_demod);
+
+	kfree(dvb);
+	dev->dvb = NULL;
+	kref_put(&dev->ref, em28xx_free_device);
+
+	return 0;
+}
+
+static int em28xx_dvb_suspend(struct em28xx *dev)
+{
+	int ret = 0;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->board.has_dvb)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Suspending DVB extension\n");
+	if (dev->dvb) {
+		struct em28xx_dvb *dvb = dev->dvb;
+
+		if (dvb->fe[0]) {
+			ret = dvb_frontend_suspend(dvb->fe[0]);
+			dev_info(&dev->intf->dev, "fe0 suspend %d\n", ret);
+		}
+		if (dvb->fe[1]) {
+			dvb_frontend_suspend(dvb->fe[1]);
+			dev_info(&dev->intf->dev, "fe1 suspend %d\n", ret);
+		}
+	}
+
+	return 0;
+}
+
+static int em28xx_dvb_resume(struct em28xx *dev)
+{
+	int ret = 0;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->board.has_dvb)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Resuming DVB extension\n");
+	if (dev->dvb) {
+		struct em28xx_dvb *dvb = dev->dvb;
+
+		if (dvb->fe[0]) {
+			ret = dvb_frontend_resume(dvb->fe[0]);
+			dev_info(&dev->intf->dev, "fe0 resume %d\n", ret);
+		}
+
+		if (dvb->fe[1]) {
+			ret = dvb_frontend_resume(dvb->fe[1]);
+			dev_info(&dev->intf->dev, "fe1 resume %d\n", ret);
+		}
+	}
+
+	return 0;
+}
+
+static struct em28xx_ops dvb_ops = {
+	.id   = EM28XX_DVB,
+	.name = "Em28xx dvb Extension",
+	.init = em28xx_dvb_init,
+	.fini = em28xx_dvb_fini,
+	.suspend = em28xx_dvb_suspend,
+	.resume = em28xx_dvb_resume,
+};
+
+static int __init em28xx_dvb_register(void)
+{
+	return em28xx_register_extension(&dvb_ops);
+}
+
+static void __exit em28xx_dvb_unregister(void)
+{
+	em28xx_unregister_extension(&dvb_ops);
+}
+
+module_init(em28xx_dvb_register);
+module_exit(em28xx_dvb_unregister);
diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c
new file mode 100644
index 000000000..592b98b36
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-i2c.c
@@ -0,0 +1,1035 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-i2c.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+//		      Markus Rechberger <mrechberger@gmail.com>
+//		      Mauro Carvalho Chehab <mchehab@kernel.org>
+//		      Sascha Sommer <saschasommer@freenet.de>
+// Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/i2c.h>
+#include <linux/jiffies.h>
+
+#include "tuner-xc2028.h"
+#include <media/v4l2-common.h>
+#include <media/tuner.h>
+
+/* ----------------------------------------------------------- */
+
+static unsigned int i2c_scan;
+module_param(i2c_scan, int, 0444);
+MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
+
+static unsigned int i2c_debug;
+module_param(i2c_debug, int, 0644);
+MODULE_PARM_DESC(i2c_debug, "i2c debug message level (1: normal debug, 2: show I2C transfers)");
+
+#define dprintk(level, fmt, arg...) do {				\
+	if (i2c_debug > level)						\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "i2c: %s: " fmt, __func__, ## arg);		\
+} while (0)
+
+/*
+ * Time in msecs to wait for i2c xfers to finish.
+ * 35ms is the maximum time a SMBUS device could wait when
+ * clock stretching is used. As the transfer itself will take
+ * some time to happen, set it to 35 ms.
+ *
+ * Ok, I2C doesn't specify any limit. So, eventually, we may need
+ * to increase this timeout.
+ */
+#define EM28XX_I2C_XFER_TIMEOUT         35 /* ms */
+
+static int em28xx_i2c_timeout(struct em28xx *dev)
+{
+	int time = EM28XX_I2C_XFER_TIMEOUT;
+
+	switch (dev->i2c_speed & 0x03) {
+	case EM28XX_I2C_FREQ_25_KHZ:
+		time += 4;		/* Assume 4 ms for transfers */
+		break;
+	case EM28XX_I2C_FREQ_100_KHZ:
+	case EM28XX_I2C_FREQ_400_KHZ:
+		time += 1;		/* Assume 1 ms for transfers */
+		break;
+	default: /* EM28XX_I2C_FREQ_1_5_MHZ */
+		break;
+	}
+
+	return msecs_to_jiffies(time);
+}
+
+/*
+ * em2800_i2c_send_bytes()
+ * send up to 4 bytes to the em2800 i2c device
+ */
+static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
+{
+	unsigned long timeout = jiffies + em28xx_i2c_timeout(dev);
+	int ret;
+	u8 b2[6];
+
+	if (len < 1 || len > 4)
+		return -EOPNOTSUPP;
+
+	b2[5] = 0x80 + len - 1;
+	b2[4] = addr;
+	b2[3] = buf[0];
+	if (len > 1)
+		b2[2] = buf[1];
+	if (len > 2)
+		b2[1] = buf[2];
+	if (len > 3)
+		b2[0] = buf[3];
+
+	/* trigger write */
+	ret = dev->em28xx_write_regs(dev, 4 - len, &b2[4 - len], 2 + len);
+	if (ret != 2 + len) {
+		dev_warn(&dev->intf->dev,
+			 "failed to trigger write to i2c address 0x%x (error=%i)\n",
+			    addr, ret);
+		return (ret < 0) ? ret : -EIO;
+	}
+	/* wait for completion */
+	while (time_is_after_jiffies(timeout)) {
+		ret = dev->em28xx_read_reg(dev, 0x05);
+		if (ret == 0x80 + len - 1)
+			return len;
+		if (ret == 0x94 + len - 1) {
+			dprintk(1, "R05 returned 0x%02x: I2C ACK error\n", ret);
+			return -ENXIO;
+		}
+		if (ret < 0) {
+			dev_warn(&dev->intf->dev,
+				 "failed to get i2c transfer status from bridge register (error=%i)\n",
+				ret);
+			return ret;
+		}
+		usleep_range(5000, 6000);
+	}
+	dprintk(0, "write to i2c device at 0x%x timed out\n", addr);
+	return -ETIMEDOUT;
+}
+
+/*
+ * em2800_i2c_recv_bytes()
+ * read up to 4 bytes from the em2800 i2c device
+ */
+static int em2800_i2c_recv_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
+{
+	unsigned long timeout = jiffies + em28xx_i2c_timeout(dev);
+	u8 buf2[4];
+	int ret;
+	int i;
+
+	if (len < 1 || len > 4)
+		return -EOPNOTSUPP;
+
+	/* trigger read */
+	buf2[1] = 0x84 + len - 1;
+	buf2[0] = addr;
+	ret = dev->em28xx_write_regs(dev, 0x04, buf2, 2);
+	if (ret != 2) {
+		dev_warn(&dev->intf->dev,
+			 "failed to trigger read from i2c address 0x%x (error=%i)\n",
+			 addr, ret);
+		return (ret < 0) ? ret : -EIO;
+	}
+
+	/* wait for completion */
+	while (time_is_after_jiffies(timeout)) {
+		ret = dev->em28xx_read_reg(dev, 0x05);
+		if (ret == 0x84 + len - 1)
+			break;
+		if (ret == 0x94 + len - 1) {
+			dprintk(1, "R05 returned 0x%02x: I2C ACK error\n",
+				ret);
+			return -ENXIO;
+		}
+		if (ret < 0) {
+			dev_warn(&dev->intf->dev,
+				 "failed to get i2c transfer status from bridge register (error=%i)\n",
+				 ret);
+			return ret;
+		}
+		usleep_range(5000, 6000);
+	}
+	if (ret != 0x84 + len - 1)
+		dprintk(0, "read from i2c device at 0x%x timed out\n", addr);
+
+	/* get the received message */
+	ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4 - len, buf2, len);
+	if (ret != len) {
+		dev_warn(&dev->intf->dev,
+			 "reading from i2c device at 0x%x failed: couldn't get the received message from the bridge (error=%i)\n",
+			 addr, ret);
+		return (ret < 0) ? ret : -EIO;
+	}
+	for (i = 0; i < len; i++)
+		buf[i] = buf2[len - 1 - i];
+
+	return ret;
+}
+
+/*
+ * em2800_i2c_check_for_device()
+ * check if there is an i2c device at the supplied address
+ */
+static int em2800_i2c_check_for_device(struct em28xx *dev, u8 addr)
+{
+	u8 buf;
+	int ret;
+
+	ret = em2800_i2c_recv_bytes(dev, addr, &buf, 1);
+	if (ret == 1)
+		return 0;
+	return (ret < 0) ? ret : -EIO;
+}
+
+/*
+ * em28xx_i2c_send_bytes()
+ */
+static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
+				 u16 len, int stop)
+{
+	unsigned long timeout = jiffies + em28xx_i2c_timeout(dev);
+	int ret;
+
+	if (len < 1 || len > 64)
+		return -EOPNOTSUPP;
+	/*
+	 * NOTE: limited by the USB ctrl message constraints
+	 * Zero length reads always succeed, even if no device is connected
+	 */
+
+	/* Write to i2c device */
+	ret = dev->em28xx_write_regs_req(dev, stop ? 2 : 3, addr, buf, len);
+	if (ret != len) {
+		if (ret < 0) {
+			dev_warn(&dev->intf->dev,
+				 "writing to i2c device at 0x%x failed (error=%i)\n",
+				 addr, ret);
+			return ret;
+		}
+		dev_warn(&dev->intf->dev,
+			 "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
+				len, addr, ret);
+		return -EIO;
+	}
+
+	/* wait for completion */
+	while (time_is_after_jiffies(timeout)) {
+		ret = dev->em28xx_read_reg(dev, 0x05);
+		if (ret == 0) /* success */
+			return len;
+		if (ret == 0x10) {
+			dprintk(1, "I2C ACK error on writing to addr 0x%02x\n",
+				addr);
+			return -ENXIO;
+		}
+		if (ret < 0) {
+			dev_warn(&dev->intf->dev,
+				 "failed to get i2c transfer status from bridge register (error=%i)\n",
+				 ret);
+			return ret;
+		}
+		usleep_range(5000, 6000);
+		/*
+		 * NOTE: do we really have to wait for success ?
+		 * Never seen anything else than 0x00 or 0x10
+		 * (even with high payload) ...
+		 */
+	}
+
+	if (ret == 0x02 || ret == 0x04) {
+		/* NOTE: these errors seem to be related to clock stretching */
+		dprintk(0,
+			"write to i2c device at 0x%x timed out (status=%i)\n",
+			addr, ret);
+		return -ETIMEDOUT;
+	}
+
+	dev_warn(&dev->intf->dev,
+		 "write to i2c device at 0x%x failed with unknown error (status=%i)\n",
+		 addr, ret);
+	return -EIO;
+}
+
+/*
+ * em28xx_i2c_recv_bytes()
+ * read a byte from the i2c device
+ */
+static int em28xx_i2c_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf, u16 len)
+{
+	int ret;
+
+	if (len < 1 || len > 64)
+		return -EOPNOTSUPP;
+	/*
+	 * NOTE: limited by the USB ctrl message constraints
+	 * Zero length reads always succeed, even if no device is connected
+	 */
+
+	/* Read data from i2c device */
+	ret = dev->em28xx_read_reg_req_len(dev, 2, addr, buf, len);
+	if (ret < 0) {
+		dev_warn(&dev->intf->dev,
+			 "reading from i2c device at 0x%x failed (error=%i)\n",
+			 addr, ret);
+		return ret;
+	}
+	/*
+	 * NOTE: some devices with two i2c buses have the bad habit to return 0
+	 * bytes if we are on bus B AND there was no write attempt to the
+	 * specified slave address before AND no device is present at the
+	 * requested slave address.
+	 * Anyway, the next check will fail with -ENXIO in this case, so avoid
+	 * spamming the system log on device probing and do nothing here.
+	 */
+
+	/* Check success of the i2c operation */
+	ret = dev->em28xx_read_reg(dev, 0x05);
+	if (ret == 0) /* success */
+		return len;
+	if (ret < 0) {
+		dev_warn(&dev->intf->dev,
+			 "failed to get i2c transfer status from bridge register (error=%i)\n",
+			 ret);
+		return ret;
+	}
+	if (ret == 0x10) {
+		dprintk(1, "I2C ACK error on writing to addr 0x%02x\n",
+			addr);
+		return -ENXIO;
+	}
+
+	if (ret == 0x02 || ret == 0x04) {
+		/* NOTE: these errors seem to be related to clock stretching */
+		dprintk(0,
+			"write to i2c device at 0x%x timed out (status=%i)\n",
+			addr, ret);
+		return -ETIMEDOUT;
+	}
+
+	dev_warn(&dev->intf->dev,
+		 "write to i2c device at 0x%x failed with unknown error (status=%i)\n",
+		 addr, ret);
+	return -EIO;
+}
+
+/*
+ * em28xx_i2c_check_for_device()
+ * check if there is a i2c_device at the supplied address
+ */
+static int em28xx_i2c_check_for_device(struct em28xx *dev, u16 addr)
+{
+	int ret;
+	u8 buf;
+
+	ret = em28xx_i2c_recv_bytes(dev, addr, &buf, 1);
+	if (ret == 1)
+		return 0;
+	return (ret < 0) ? ret : -EIO;
+}
+
+/*
+ * em25xx_bus_B_send_bytes
+ * write bytes to the i2c device
+ */
+static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
+				   u16 len)
+{
+	int ret;
+
+	if (len < 1 || len > 64)
+		return -EOPNOTSUPP;
+	/*
+	 * NOTE: limited by the USB ctrl message constraints
+	 * Zero length reads always succeed, even if no device is connected
+	 */
+
+	/* Set register and write value */
+	ret = dev->em28xx_write_regs_req(dev, 0x06, addr, buf, len);
+	if (ret != len) {
+		if (ret < 0) {
+			dev_warn(&dev->intf->dev,
+				 "writing to i2c device at 0x%x failed (error=%i)\n",
+				 addr, ret);
+			return ret;
+		}
+
+		dev_warn(&dev->intf->dev,
+			 "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
+			 len, addr, ret);
+		return -EIO;
+	}
+	/* Check success */
+	ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000);
+	/*
+	 * NOTE: the only error we've seen so far is
+	 * 0x01 when the slave device is not present
+	 */
+	if (!ret)
+		return len;
+
+	if (ret > 0) {
+		dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret);
+		return -ENXIO;
+	}
+
+	return ret;
+	/*
+	 * NOTE: With chip types (other chip IDs) which actually don't support
+	 * this operation, it seems to succeed ALWAYS ! (even if there is no
+	 * slave device or even no second i2c bus provided)
+	 */
+}
+
+/*
+ * em25xx_bus_B_recv_bytes
+ * read bytes from the i2c device
+ */
+static int em25xx_bus_B_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf,
+				   u16 len)
+{
+	int ret;
+
+	if (len < 1 || len > 64)
+		return -EOPNOTSUPP;
+	/*
+	 * NOTE: limited by the USB ctrl message constraints
+	 * Zero length reads always succeed, even if no device is connected
+	 */
+
+	/* Read value */
+	ret = dev->em28xx_read_reg_req_len(dev, 0x06, addr, buf, len);
+	if (ret < 0) {
+		dev_warn(&dev->intf->dev,
+			 "reading from i2c device at 0x%x failed (error=%i)\n",
+			 addr, ret);
+		return ret;
+	}
+	/*
+	 * NOTE: some devices with two i2c buses have the bad habit to return 0
+	 * bytes if we are on bus B AND there was no write attempt to the
+	 * specified slave address before AND no device is present at the
+	 * requested slave address.
+	 * Anyway, the next check will fail with -ENXIO in this case, so avoid
+	 * spamming the system log on device probing and do nothing here.
+	 */
+
+	/* Check success */
+	ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000);
+	/*
+	 * NOTE: the only error we've seen so far is
+	 * 0x01 when the slave device is not present
+	 */
+	if (!ret)
+		return len;
+
+	if (ret > 0) {
+		dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret);
+		return -ENXIO;
+	}
+
+	return ret;
+	/*
+	 * NOTE: With chip types (other chip IDs) which actually don't support
+	 * this operation, it seems to succeed ALWAYS ! (even if there is no
+	 * slave device or even no second i2c bus provided)
+	 */
+}
+
+/*
+ * em25xx_bus_B_check_for_device()
+ * check if there is a i2c device at the supplied address
+ */
+static int em25xx_bus_B_check_for_device(struct em28xx *dev, u16 addr)
+{
+	u8 buf;
+	int ret;
+
+	ret = em25xx_bus_B_recv_bytes(dev, addr, &buf, 1);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+	/*
+	 * NOTE: With chips which do not support this operation,
+	 * it seems to succeed ALWAYS ! (even if no device connected)
+	 */
+}
+
+static inline int i2c_check_for_device(struct em28xx_i2c_bus *i2c_bus, u16 addr)
+{
+	struct em28xx *dev = i2c_bus->dev;
+	int rc = -EOPNOTSUPP;
+
+	if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
+		rc = em28xx_i2c_check_for_device(dev, addr);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
+		rc = em2800_i2c_check_for_device(dev, addr);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
+		rc = em25xx_bus_B_check_for_device(dev, addr);
+	return rc;
+}
+
+static inline int i2c_recv_bytes(struct em28xx_i2c_bus *i2c_bus,
+				 struct i2c_msg msg)
+{
+	struct em28xx *dev = i2c_bus->dev;
+	u16 addr = msg.addr << 1;
+	int rc = -EOPNOTSUPP;
+
+	if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
+		rc = em28xx_i2c_recv_bytes(dev, addr, msg.buf, msg.len);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
+		rc = em2800_i2c_recv_bytes(dev, addr, msg.buf, msg.len);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
+		rc = em25xx_bus_B_recv_bytes(dev, addr, msg.buf, msg.len);
+	return rc;
+}
+
+static inline int i2c_send_bytes(struct em28xx_i2c_bus *i2c_bus,
+				 struct i2c_msg msg, int stop)
+{
+	struct em28xx *dev = i2c_bus->dev;
+	u16 addr = msg.addr << 1;
+	int rc = -EOPNOTSUPP;
+
+	if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
+		rc = em28xx_i2c_send_bytes(dev, addr, msg.buf, msg.len, stop);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
+		rc = em2800_i2c_send_bytes(dev, addr, msg.buf, msg.len);
+	else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
+		rc = em25xx_bus_B_send_bytes(dev, addr, msg.buf, msg.len);
+	return rc;
+}
+
+/*
+ * em28xx_i2c_xfer()
+ * the main i2c transfer function
+ */
+static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
+			   struct i2c_msg msgs[], int num)
+{
+	struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data;
+	struct em28xx *dev = i2c_bus->dev;
+	unsigned int bus = i2c_bus->bus;
+	int addr, rc, i;
+	u8 reg;
+
+	/*
+	 * prevent i2c xfer attempts after device is disconnected
+	 * some fe's try to do i2c writes/reads from their release
+	 * interfaces when called in disconnect path
+	 */
+	if (dev->disconnected)
+		return -ENODEV;
+
+	if (!rt_mutex_trylock(&dev->i2c_bus_lock))
+		return -EAGAIN;
+
+	/* Switch I2C bus if needed */
+	if (bus != dev->cur_i2c_bus &&
+	    i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX) {
+		if (bus == 1)
+			reg = EM2874_I2C_SECONDARY_BUS_SELECT;
+		else
+			reg = 0;
+		em28xx_write_reg_bits(dev, EM28XX_R06_I2C_CLK, reg,
+				      EM2874_I2C_SECONDARY_BUS_SELECT);
+		dev->cur_i2c_bus = bus;
+	}
+
+	for (i = 0; i < num; i++) {
+		addr = msgs[i].addr << 1;
+		if (!msgs[i].len) {
+			/*
+			 * no len: check only for device presence
+			 * This code is only called during device probe.
+			 */
+			rc = i2c_check_for_device(i2c_bus, addr);
+
+			if (rc == -ENXIO)
+				rc = -ENODEV;
+		} else if (msgs[i].flags & I2C_M_RD) {
+			/* read bytes */
+			rc = i2c_recv_bytes(i2c_bus, msgs[i]);
+		} else {
+			/* write bytes */
+			rc = i2c_send_bytes(i2c_bus, msgs[i], i == num - 1);
+		}
+
+		if (rc < 0)
+			goto error;
+
+		dprintk(2, "%s %s addr=%02x len=%d: %*ph\n",
+			(msgs[i].flags & I2C_M_RD) ? "read" : "write",
+			i == num - 1 ? "stop" : "nonstop",
+			addr, msgs[i].len,
+			msgs[i].len, msgs[i].buf);
+	}
+
+	rt_mutex_unlock(&dev->i2c_bus_lock);
+	return num;
+
+error:
+	dprintk(2, "%s %s addr=%02x len=%d: %sERROR: %i\n",
+		(msgs[i].flags & I2C_M_RD) ? "read" : "write",
+		i == num - 1 ? "stop" : "nonstop",
+		addr, msgs[i].len,
+		(rc == -ENODEV) ? "no device " : "",
+		rc);
+
+	rt_mutex_unlock(&dev->i2c_bus_lock);
+	return rc;
+}
+
+/*
+ * based on linux/sunrpc/svcauth.h and linux/hash.h
+ * The original hash function returns a different value, if arch is x86_64
+ * or i386.
+ */
+static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
+{
+	unsigned long hash = 0;
+	unsigned long l = 0;
+	int len = 0;
+	unsigned char c;
+
+	do {
+		if (len == length) {
+			c = (char)len;
+			len = -1;
+		} else {
+			c = *buf++;
+		}
+		l = (l << 8) | c;
+		len++;
+		if ((len & (32 / 8 - 1)) == 0)
+			hash = ((hash ^ l) * 0x9e370001UL);
+	} while (len);
+
+	return (hash >> (32 - bits)) & 0xffffffffUL;
+}
+
+/*
+ * Helper function to read data blocks from i2c clients with 8 or 16 bit
+ * address width, 8 bit register width and auto incrementation been activated
+ */
+static int em28xx_i2c_read_block(struct em28xx *dev, unsigned int bus, u16 addr,
+				 bool addr_w16, u16 len, u8 *data)
+{
+	int remain = len, rsize, rsize_max, ret;
+	u8 buf[2];
+
+	/* Sanity check */
+	if (addr + remain > (addr_w16 * 0xff00 + 0xff + 1))
+		return -EINVAL;
+	/* Select address */
+	buf[0] = addr >> 8;
+	buf[1] = addr & 0xff;
+	ret = i2c_master_send(&dev->i2c_client[bus],
+			      buf + !addr_w16, 1 + addr_w16);
+	if (ret < 0)
+		return ret;
+	/* Read data */
+	if (dev->board.is_em2800)
+		rsize_max = 4;
+	else
+		rsize_max = 64;
+	while (remain > 0) {
+		if (remain > rsize_max)
+			rsize = rsize_max;
+		else
+			rsize = remain;
+
+		ret = i2c_master_recv(&dev->i2c_client[bus], data, rsize);
+		if (ret < 0)
+			return ret;
+
+		remain -= rsize;
+		data += rsize;
+	}
+
+	return len;
+}
+
+static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned int bus,
+			     u8 **eedata, u16 *eedata_len)
+{
+	const u16 len = 256;
+	/*
+	 * FIXME common length/size for bytes to read, to display, hash
+	 * calculation and returned device dataset. Simplifies the code a lot,
+	 * but we might have to deal with multiple sizes in the future !
+	 */
+	int err;
+	struct em28xx_eeprom *dev_config;
+	u8 buf, *data;
+
+	*eedata = NULL;
+	*eedata_len = 0;
+
+	/* EEPROM is always on i2c bus 0 on all known devices. */
+
+	dev->i2c_client[bus].addr = 0xa0 >> 1;
+
+	/* Check if board has eeprom */
+	err = i2c_master_recv(&dev->i2c_client[bus], &buf, 0);
+	if (err < 0) {
+		dev_info(&dev->intf->dev, "board has no eeprom\n");
+		return -ENODEV;
+	}
+
+	data = kzalloc(len, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	/* Read EEPROM content */
+	err = em28xx_i2c_read_block(dev, bus, 0x0000,
+				    dev->eeprom_addrwidth_16bit,
+				    len, data);
+	if (err != len) {
+		dev_err(&dev->intf->dev,
+			"failed to read eeprom (err=%d)\n", err);
+		goto error;
+	}
+
+	if (i2c_debug) {
+		/* Display eeprom content */
+		print_hex_dump(KERN_DEBUG, "em28xx eeprom ", DUMP_PREFIX_OFFSET,
+			       16, 1, data, len, true);
+
+		if (dev->eeprom_addrwidth_16bit)
+			dev_info(&dev->intf->dev,
+				 "eeprom %06x: ... (skipped)\n", 256);
+	}
+
+	if (dev->eeprom_addrwidth_16bit &&
+	    data[0] == 0x26 && data[3] == 0x00) {
+		/* new eeprom format; size 4-64kb */
+		u16 mc_start;
+		u16 hwconf_offset;
+
+		dev->hash = em28xx_hash_mem(data, len, 32);
+		mc_start = (data[1] << 8) + 4;	/* usually 0x0004 */
+
+		dev_info(&dev->intf->dev,
+			 "EEPROM ID = %4ph, EEPROM hash = 0x%08lx\n",
+			 data, dev->hash);
+		dev_info(&dev->intf->dev,
+			 "EEPROM info:\n");
+		dev_info(&dev->intf->dev,
+			 "\tmicrocode start address = 0x%04x, boot configuration = 0x%02x\n",
+			 mc_start, data[2]);
+		/*
+		 * boot configuration (address 0x0002):
+		 * [0]   microcode download speed: 1 = 400 kHz; 0 = 100 kHz
+		 * [1]   always selects 12 kb RAM
+		 * [2]   USB device speed: 1 = force Full Speed; 0 = auto detect
+		 * [4]   1 = force fast mode and no suspend for device testing
+		 * [5:7] USB PHY tuning registers; determined by device
+		 *       characterization
+		 */
+
+		/*
+		 * Read hardware config dataset offset from address
+		 * (microcode start + 46)
+		 */
+		err = em28xx_i2c_read_block(dev, bus, mc_start + 46, 1, 2,
+					    data);
+		if (err != 2) {
+			dev_err(&dev->intf->dev,
+				"failed to read hardware configuration data from eeprom (err=%d)\n",
+				err);
+			goto error;
+		}
+
+		/* Calculate hardware config dataset start address */
+		hwconf_offset = mc_start + data[0] + (data[1] << 8);
+
+		/* Read hardware config dataset */
+		/*
+		 * NOTE: the microcode copy can be multiple pages long, but
+		 * we assume the hardware config dataset is the same as in
+		 * the old eeprom and not longer than 256 bytes.
+		 * tveeprom is currently also limited to 256 bytes.
+		 */
+		err = em28xx_i2c_read_block(dev, bus, hwconf_offset, 1, len,
+					    data);
+		if (err != len) {
+			dev_err(&dev->intf->dev,
+				"failed to read hardware configuration data from eeprom (err=%d)\n",
+				err);
+			goto error;
+		}
+
+		/* Verify hardware config dataset */
+		/* NOTE: not all devices provide this type of dataset */
+		if (data[0] != 0x1a || data[1] != 0xeb ||
+		    data[2] != 0x67 || data[3] != 0x95) {
+			dev_info(&dev->intf->dev,
+				 "\tno hardware configuration dataset found in eeprom\n");
+			kfree(data);
+			return 0;
+		}
+
+		/*
+		 * TODO: decrypt eeprom data for camera bridges
+		 * (em25xx, em276x+)
+		 */
+
+	} else if (!dev->eeprom_addrwidth_16bit &&
+		   data[0] == 0x1a && data[1] == 0xeb &&
+		   data[2] == 0x67 && data[3] == 0x95) {
+		dev->hash = em28xx_hash_mem(data, len, 32);
+		dev_info(&dev->intf->dev,
+			 "EEPROM ID = %4ph, EEPROM hash = 0x%08lx\n",
+			 data, dev->hash);
+		dev_info(&dev->intf->dev,
+			 "EEPROM info:\n");
+	} else {
+		dev_info(&dev->intf->dev,
+			 "unknown eeprom format or eeprom corrupted !\n");
+		err = -ENODEV;
+		goto error;
+	}
+
+	*eedata = data;
+	*eedata_len = len;
+	dev_config = (void *)*eedata;
+
+	switch (le16_to_cpu(dev_config->chip_conf) >> 4 & 0x3) {
+	case 0:
+		dev_info(&dev->intf->dev, "\tNo audio on board.\n");
+		break;
+	case 1:
+		dev_info(&dev->intf->dev, "\tAC97 audio (5 sample rates)\n");
+		break;
+	case 2:
+		if (dev->chip_id < CHIP_ID_EM2860)
+			dev_info(&dev->intf->dev,
+				 "\tI2S audio, sample rate=32k\n");
+		else
+			dev_info(&dev->intf->dev,
+				 "\tI2S audio, 3 sample rates\n");
+		break;
+	case 3:
+		if (dev->chip_id < CHIP_ID_EM2860)
+			dev_info(&dev->intf->dev,
+				 "\tI2S audio, 3 sample rates\n");
+		else
+			dev_info(&dev->intf->dev,
+				 "\tI2S audio, 5 sample rates\n");
+		break;
+	}
+
+	if (le16_to_cpu(dev_config->chip_conf) & 1 << 3)
+		dev_info(&dev->intf->dev, "\tUSB Remote wakeup capable\n");
+
+	if (le16_to_cpu(dev_config->chip_conf) & 1 << 2)
+		dev_info(&dev->intf->dev, "\tUSB Self power capable\n");
+
+	switch (le16_to_cpu(dev_config->chip_conf) & 0x3) {
+	case 0:
+		dev_info(&dev->intf->dev, "\t500mA max power\n");
+		break;
+	case 1:
+		dev_info(&dev->intf->dev, "\t400mA max power\n");
+		break;
+	case 2:
+		dev_info(&dev->intf->dev, "\t300mA max power\n");
+		break;
+	case 3:
+		dev_info(&dev->intf->dev, "\t200mA max power\n");
+		break;
+	}
+	dev_info(&dev->intf->dev,
+		 "\tTable at offset 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n",
+		 dev_config->string_idx_table,
+		 le16_to_cpu(dev_config->string1),
+		 le16_to_cpu(dev_config->string2),
+		 le16_to_cpu(dev_config->string3));
+
+	return 0;
+
+error:
+	kfree(data);
+	return err;
+}
+
+/* ----------------------------------------------------------- */
+
+/*
+ * functionality()
+ */
+static u32 functionality(struct i2c_adapter *i2c_adap)
+{
+	struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data;
+
+	if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX ||
+	    i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B) {
+		return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+	} else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)  {
+		return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL) &
+			~I2C_FUNC_SMBUS_WRITE_BLOCK_DATA;
+	}
+
+	WARN(1, "Unknown i2c bus algorithm.\n");
+	return 0;
+}
+
+static const struct i2c_algorithm em28xx_algo = {
+	.master_xfer   = em28xx_i2c_xfer,
+	.functionality = functionality,
+};
+
+static const struct i2c_adapter em28xx_adap_template = {
+	.owner = THIS_MODULE,
+	.name = "em28xx",
+	.algo = &em28xx_algo,
+};
+
+static const struct i2c_client em28xx_client_template = {
+	.name = "em28xx internal",
+};
+
+/* ----------------------------------------------------------- */
+
+/*
+ * i2c_devs
+ * incomplete list of known devices
+ */
+static char *i2c_devs[128] = {
+	[0x1c >> 1] = "lgdt330x",
+	[0x3e >> 1] = "remote IR sensor",
+	[0x4a >> 1] = "saa7113h",
+	[0x52 >> 1] = "drxk",
+	[0x60 >> 1] = "remote IR sensor",
+	[0x8e >> 1] = "remote IR sensor",
+	[0x86 >> 1] = "tda9887",
+	[0x80 >> 1] = "msp34xx",
+	[0x88 >> 1] = "msp34xx",
+	[0xa0 >> 1] = "eeprom",
+	[0xb0 >> 1] = "tda9874",
+	[0xb8 >> 1] = "tvp5150a",
+	[0xba >> 1] = "webcam sensor or tvp5150a",
+	[0xc0 >> 1] = "tuner (analog)",
+	[0xc2 >> 1] = "tuner (analog)",
+	[0xc4 >> 1] = "tuner (analog)",
+	[0xc6 >> 1] = "tuner (analog)",
+};
+
+/*
+ * do_i2c_scan()
+ * check i2c address range for devices
+ */
+void em28xx_do_i2c_scan(struct em28xx *dev, unsigned int bus)
+{
+	u8 i2c_devicelist[128];
+	unsigned char buf;
+	int i, rc;
+
+	memset(i2c_devicelist, 0, sizeof(i2c_devicelist));
+
+	for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) {
+		dev->i2c_client[bus].addr = i;
+		rc = i2c_master_recv(&dev->i2c_client[bus], &buf, 0);
+		if (rc < 0)
+			continue;
+		i2c_devicelist[i] = i;
+		dev_info(&dev->intf->dev,
+			 "found i2c device @ 0x%x on bus %d [%s]\n",
+			 i << 1, bus, i2c_devs[i] ? i2c_devs[i] : "???");
+	}
+
+	if (bus == dev->def_i2c_bus)
+		dev->i2c_hash = em28xx_hash_mem(i2c_devicelist,
+						sizeof(i2c_devicelist), 32);
+}
+
+/*
+ * em28xx_i2c_register()
+ * register i2c bus
+ */
+int em28xx_i2c_register(struct em28xx *dev, unsigned int bus,
+			enum em28xx_i2c_algo_type algo_type)
+{
+	int retval;
+
+	if (WARN_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg ||
+		    !dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req))
+		return -ENODEV;
+
+	if (bus >= NUM_I2C_BUSES)
+		return -ENODEV;
+
+	dev->i2c_adap[bus] = em28xx_adap_template;
+	dev->i2c_adap[bus].dev.parent = &dev->intf->dev;
+	strscpy(dev->i2c_adap[bus].name, dev_name(&dev->intf->dev),
+		sizeof(dev->i2c_adap[bus].name));
+
+	dev->i2c_bus[bus].bus = bus;
+	dev->i2c_bus[bus].algo_type = algo_type;
+	dev->i2c_bus[bus].dev = dev;
+	dev->i2c_adap[bus].algo_data = &dev->i2c_bus[bus];
+
+	retval = i2c_add_adapter(&dev->i2c_adap[bus]);
+	if (retval < 0) {
+		dev_err(&dev->intf->dev,
+			"%s: i2c_add_adapter failed! retval [%d]\n",
+			__func__, retval);
+		return retval;
+	}
+
+	dev->i2c_client[bus] = em28xx_client_template;
+	dev->i2c_client[bus].adapter = &dev->i2c_adap[bus];
+
+	/* Up to now, all eeproms are at bus 0 */
+	if (!bus) {
+		retval = em28xx_i2c_eeprom(dev, bus,
+					   &dev->eedata, &dev->eedata_len);
+		if (retval < 0 && retval != -ENODEV) {
+			dev_err(&dev->intf->dev,
+				"%s: em28xx_i2_eeprom failed! retval [%d]\n",
+				__func__, retval);
+		}
+	}
+
+	if (i2c_scan)
+		em28xx_do_i2c_scan(dev, bus);
+
+	return 0;
+}
+
+/*
+ * em28xx_i2c_unregister()
+ * unregister i2c_bus
+ */
+int em28xx_i2c_unregister(struct em28xx *dev, unsigned int bus)
+{
+	if (bus >= NUM_I2C_BUSES)
+		return -ENODEV;
+
+	i2c_del_adapter(&dev->i2c_adap[bus]);
+	return 0;
+}
diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
new file mode 100644
index 000000000..0b6d77c3b
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -0,0 +1,943 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// handle em28xx IR remotes via linux kernel input layer.
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+//		      Markus Rechberger <mrechberger@gmail.com>
+//		      Mauro Carvalho Chehab <mchehab@kernel.org>
+//		      Sascha Sommer <saschasommer@freenet.de>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+#include <linux/slab.h>
+#include <linux/bitrev.h>
+
+#define EM28XX_SNAPSHOT_KEY				KEY_CAMERA
+#define EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL		500 /* [ms] */
+#define EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL		100 /* [ms] */
+
+static unsigned int ir_debug;
+module_param(ir_debug, int, 0644);
+MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
+
+#define MODULE_NAME "em28xx"
+
+#define dprintk(fmt, arg...) do {					\
+	if (ir_debug)							\
+		dev_printk(KERN_DEBUG, &ir->dev->intf->dev,		\
+			   "input: %s: " fmt, __func__, ## arg);	\
+} while (0)
+
+/*
+ * Polling structure used by em28xx IR's
+ */
+
+struct em28xx_ir_poll_result {
+	unsigned int toggle_bit:1;
+	unsigned int read_count:7;
+
+	enum rc_proto protocol;
+	u32 scancode;
+};
+
+struct em28xx_IR {
+	struct em28xx *dev;
+	struct rc_dev *rc;
+	char phys[32];
+
+	/* poll decoder */
+	int polling;
+	struct delayed_work work;
+	unsigned int full_code:1;
+	unsigned int last_readcount;
+	u64 rc_proto;
+
+	struct i2c_client *i2c_client;
+
+	int  (*get_key_i2c)(struct i2c_client *ir, enum rc_proto *protocol,
+			    u32 *scancode);
+	int  (*get_key)(struct em28xx_IR *ir, struct em28xx_ir_poll_result *r);
+};
+
+/*
+ * I2C IR based get keycodes - should be used with ir-kbd-i2c
+ */
+
+static int em28xx_get_key_terratec(struct i2c_client *i2c_dev,
+				   enum rc_proto *protocol, u32 *scancode)
+{
+	int rc;
+	unsigned char b;
+
+	/* poll IR chip */
+	rc = i2c_master_recv(i2c_dev, &b, 1);
+	if (rc != 1) {
+		if (rc < 0)
+			return rc;
+		return -EIO;
+	}
+
+	/*
+	 * it seems that 0xFE indicates that a button is still hold
+	 * down, while 0xff indicates that no button is hold down.
+	 */
+
+	if (b == 0xff)
+		return 0;
+
+	if (b == 0xfe)
+		/* keep old data */
+		return 1;
+
+	*protocol = RC_PROTO_UNKNOWN;
+	*scancode = b;
+	return 1;
+}
+
+static int em28xx_get_key_em_haup(struct i2c_client *i2c_dev,
+				  enum rc_proto *protocol, u32 *scancode)
+{
+	unsigned char buf[2];
+	int size;
+
+	/* poll IR chip */
+	size = i2c_master_recv(i2c_dev, buf, sizeof(buf));
+
+	if (size != 2)
+		return -EIO;
+
+	/* Does eliminate repeated parity code */
+	if (buf[1] == 0xff)
+		return 0;
+
+	/*
+	 * Rearranges bits to the right order.
+	 * The bit order were determined experimentally by using
+	 * The original Hauppauge Grey IR and another RC5 that uses addr=0x08
+	 * The RC5 code has 14 bits, but we've experimentally determined
+	 * the meaning for only 11 bits.
+	 * So, the code translation is not complete. Yet, it is enough to
+	 * work with the provided RC5 IR.
+	 */
+	*protocol = RC_PROTO_RC5;
+	*scancode = (bitrev8(buf[1]) & 0x1f) << 8 | bitrev8(buf[0]) >> 2;
+	return 1;
+}
+
+static int em28xx_get_key_pinnacle_usb_grey(struct i2c_client *i2c_dev,
+					    enum rc_proto *protocol,
+					    u32 *scancode)
+{
+	unsigned char buf[3];
+
+	/* poll IR chip */
+
+	if (i2c_master_recv(i2c_dev, buf, 3) != 3)
+		return -EIO;
+
+	if (buf[0] != 0x00)
+		return 0;
+
+	*protocol = RC_PROTO_UNKNOWN;
+	*scancode = buf[2] & 0x3f;
+	return 1;
+}
+
+static int em28xx_get_key_winfast_usbii_deluxe(struct i2c_client *i2c_dev,
+					       enum rc_proto *protocol,
+					       u32 *scancode)
+{
+	unsigned char subaddr, keydetect, key;
+
+	struct i2c_msg msg[] = {
+		{
+			.addr = i2c_dev->addr,
+			.flags = 0,
+			.buf = &subaddr, .len = 1
+		}, {
+			.addr = i2c_dev->addr,
+			.flags = I2C_M_RD,
+			.buf = &keydetect,
+			.len = 1
+		}
+	};
+
+	subaddr = 0x10;
+	if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
+		return -EIO;
+	if (keydetect == 0x00)
+		return 0;
+
+	subaddr = 0x00;
+	msg[1].buf = &key;
+	if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
+		return -EIO;
+	if (key == 0x00)
+		return 0;
+
+	*protocol = RC_PROTO_UNKNOWN;
+	*scancode = key;
+	return 1;
+}
+
+/*
+ * Poll based get keycode functions
+ */
+
+/* This is for the em2860/em2880 */
+static int default_polling_getkey(struct em28xx_IR *ir,
+				  struct em28xx_ir_poll_result *poll_result)
+{
+	struct em28xx *dev = ir->dev;
+	int rc;
+	u8 msg[3] = { 0, 0, 0 };
+
+	/*
+	 * Read key toggle, brand, and key code
+	 * on registers 0x45, 0x46 and 0x47
+	 */
+	rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,
+					  msg, sizeof(msg));
+	if (rc < 0)
+		return rc;
+
+	/* Infrared toggle (Reg 0x45[7]) */
+	poll_result->toggle_bit = (msg[0] >> 7);
+
+	/* Infrared read count (Reg 0x45[6:0] */
+	poll_result->read_count = (msg[0] & 0x7f);
+
+	/* Remote Control Address/Data (Regs 0x46/0x47) */
+	switch (ir->rc_proto) {
+	case RC_PROTO_BIT_RC5:
+		poll_result->protocol = RC_PROTO_RC5;
+		poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);
+		break;
+
+	case RC_PROTO_BIT_NEC:
+		poll_result->protocol = RC_PROTO_NEC;
+		poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[2]);
+		break;
+
+	default:
+		poll_result->protocol = RC_PROTO_UNKNOWN;
+		poll_result->scancode = msg[1] << 8 | msg[2];
+		break;
+	}
+
+	return 0;
+}
+
+static int em2874_polling_getkey(struct em28xx_IR *ir,
+				 struct em28xx_ir_poll_result *poll_result)
+{
+	struct em28xx *dev = ir->dev;
+	int rc;
+	u8 msg[5] = { 0, 0, 0, 0, 0 };
+
+	/*
+	 * Read key toggle, brand, and key code
+	 * on registers 0x51-55
+	 */
+	rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR,
+					  msg, sizeof(msg));
+	if (rc < 0)
+		return rc;
+
+	/* Infrared toggle (Reg 0x51[7]) */
+	poll_result->toggle_bit = (msg[0] >> 7);
+
+	/* Infrared read count (Reg 0x51[6:0] */
+	poll_result->read_count = (msg[0] & 0x7f);
+
+	/*
+	 * Remote Control Address (Reg 0x52)
+	 * Remote Control Data (Reg 0x53-0x55)
+	 */
+	switch (ir->rc_proto) {
+	case RC_PROTO_BIT_RC5:
+		poll_result->protocol = RC_PROTO_RC5;
+		poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);
+		break;
+
+	case RC_PROTO_BIT_NEC:
+		poll_result->scancode = ir_nec_bytes_to_scancode(msg[1], msg[2], msg[3], msg[4],
+								 &poll_result->protocol);
+		break;
+
+	case RC_PROTO_BIT_RC6_0:
+		poll_result->protocol = RC_PROTO_RC6_0;
+		poll_result->scancode = RC_SCANCODE_RC6_0(msg[1], msg[2]);
+		break;
+
+	default:
+		poll_result->protocol = RC_PROTO_UNKNOWN;
+		poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) |
+					(msg[3] << 8)  | msg[4];
+		break;
+	}
+
+	return 0;
+}
+
+/*
+ * Polling code for em28xx
+ */
+
+static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir)
+{
+	static u32 scancode;
+	enum rc_proto protocol;
+	int rc;
+
+	rc = ir->get_key_i2c(ir->i2c_client, &protocol, &scancode);
+	if (rc < 0) {
+		dprintk("ir->get_key_i2c() failed: %d\n", rc);
+		return rc;
+	}
+
+	if (rc) {
+		dprintk("%s: proto = 0x%04x, scancode = 0x%04x\n",
+			__func__, protocol, scancode);
+		rc_keydown(ir->rc, protocol, scancode, 0);
+	}
+	return 0;
+}
+
+static void em28xx_ir_handle_key(struct em28xx_IR *ir)
+{
+	int result;
+	struct em28xx_ir_poll_result poll_result;
+
+	/* read the registers containing the IR status */
+	result = ir->get_key(ir, &poll_result);
+	if (unlikely(result < 0)) {
+		dprintk("ir->get_key() failed: %d\n", result);
+		return;
+	}
+
+	if (unlikely(poll_result.read_count != ir->last_readcount)) {
+		dprintk("%s: toggle: %d, count: %d, key 0x%04x\n", __func__,
+			poll_result.toggle_bit, poll_result.read_count,
+			poll_result.scancode);
+		if (ir->full_code)
+			rc_keydown(ir->rc,
+				   poll_result.protocol,
+				   poll_result.scancode,
+				   poll_result.toggle_bit);
+		else
+			rc_keydown(ir->rc,
+				   RC_PROTO_UNKNOWN,
+				   poll_result.scancode & 0xff,
+				   poll_result.toggle_bit);
+
+		if (ir->dev->chip_id == CHIP_ID_EM2874 ||
+		    ir->dev->chip_id == CHIP_ID_EM2884)
+			/*
+			 * The em2874 clears the readcount field every time the
+			 * register is read.  The em2860/2880 datasheet says
+			 * that it is supposed to clear the readcount, but it
+			 * doesn't. So with the em2874, we are looking for a
+			 * non-zero read count as opposed to a readcount
+			 * that is incrementing
+			 */
+			ir->last_readcount = 0;
+		else
+			ir->last_readcount = poll_result.read_count;
+	}
+}
+
+static void em28xx_ir_work(struct work_struct *work)
+{
+	struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work);
+
+	if (ir->i2c_client) /* external i2c device */
+		em28xx_i2c_ir_handle_key(ir);
+	else /* internal device */
+		em28xx_ir_handle_key(ir);
+	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
+}
+
+static int em28xx_ir_start(struct rc_dev *rc)
+{
+	struct em28xx_IR *ir = rc->priv;
+
+	INIT_DELAYED_WORK(&ir->work, em28xx_ir_work);
+	schedule_delayed_work(&ir->work, 0);
+
+	return 0;
+}
+
+static void em28xx_ir_stop(struct rc_dev *rc)
+{
+	struct em28xx_IR *ir = rc->priv;
+
+	cancel_delayed_work_sync(&ir->work);
+}
+
+static int em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
+{
+	struct em28xx_IR *ir = rc_dev->priv;
+	struct em28xx *dev = ir->dev;
+
+	/* Adjust xclk based on IR table for RC5/NEC tables */
+	if (*rc_proto & RC_PROTO_BIT_RC5) {
+		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
+		ir->full_code = 1;
+		*rc_proto = RC_PROTO_BIT_RC5;
+	} else if (*rc_proto & RC_PROTO_BIT_NEC) {
+		dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
+		ir->full_code = 1;
+		*rc_proto = RC_PROTO_BIT_NEC;
+	} else if (*rc_proto & RC_PROTO_BIT_UNKNOWN) {
+		*rc_proto = RC_PROTO_BIT_UNKNOWN;
+	} else {
+		*rc_proto = ir->rc_proto;
+		return -EINVAL;
+	}
+	em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
+			      EM28XX_XCLK_IR_RC5_MODE);
+
+	ir->rc_proto = *rc_proto;
+
+	return 0;
+}
+
+static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
+{
+	struct em28xx_IR *ir = rc_dev->priv;
+	struct em28xx *dev = ir->dev;
+	u8 ir_config = EM2874_IR_RC5;
+
+	/* Adjust xclk and set type based on IR table for RC5/NEC/RC6 tables */
+	if (*rc_proto & RC_PROTO_BIT_RC5) {
+		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
+		ir->full_code = 1;
+		*rc_proto = RC_PROTO_BIT_RC5;
+	} else if (*rc_proto & RC_PROTO_BIT_NEC) {
+		dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
+		ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY;
+		ir->full_code = 1;
+		*rc_proto = RC_PROTO_BIT_NEC;
+	} else if (*rc_proto & RC_PROTO_BIT_RC6_0) {
+		dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
+		ir_config = EM2874_IR_RC6_MODE_0;
+		ir->full_code = 1;
+		*rc_proto = RC_PROTO_BIT_RC6_0;
+	} else if (*rc_proto & RC_PROTO_BIT_UNKNOWN) {
+		*rc_proto = RC_PROTO_BIT_UNKNOWN;
+	} else {
+		*rc_proto = ir->rc_proto;
+		return -EINVAL;
+	}
+	em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1);
+	em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
+			      EM28XX_XCLK_IR_RC5_MODE);
+
+	ir->rc_proto = *rc_proto;
+
+	return 0;
+}
+
+static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
+{
+	struct em28xx_IR *ir = rc_dev->priv;
+	struct em28xx *dev = ir->dev;
+
+	/* Setup the proper handler based on the chip */
+	switch (dev->chip_id) {
+	case CHIP_ID_EM2860:
+	case CHIP_ID_EM2883:
+		return em2860_ir_change_protocol(rc_dev, rc_proto);
+	case CHIP_ID_EM2884:
+	case CHIP_ID_EM2874:
+	case CHIP_ID_EM28174:
+	case CHIP_ID_EM28178:
+		return em2874_ir_change_protocol(rc_dev, rc_proto);
+	default:
+		dev_err(&ir->dev->intf->dev,
+			"Unrecognized em28xx chip id 0x%02x: IR not supported\n",
+			dev->chip_id);
+		return -EINVAL;
+	}
+}
+
+static int em28xx_probe_i2c_ir(struct em28xx *dev)
+{
+	int i = 0;
+	/*
+	 * Leadtek winfast tv USBII deluxe can find a non working IR-device
+	 * at address 0x18, so if that address is needed for another board in
+	 * the future, please put it after 0x1f.
+	 */
+	static const unsigned short addr_list[] = {
+		 0x1f, 0x30, 0x47, I2C_CLIENT_END
+	};
+
+	while (addr_list[i] != I2C_CLIENT_END) {
+		if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus],
+					      addr_list[i]) == 1)
+			return addr_list[i];
+		i++;
+	}
+
+	return -ENODEV;
+}
+
+/*
+ * Handle buttons
+ */
+
+static void em28xx_query_buttons(struct work_struct *work)
+{
+	struct em28xx *dev =
+		container_of(work, struct em28xx, buttons_query_work.work);
+	u8 i, j;
+	int regval;
+	bool is_pressed, was_pressed;
+	const struct em28xx_led *led;
+
+	/* Poll and evaluate all addresses */
+	for (i = 0; i < dev->num_button_polling_addresses; i++) {
+		/* Read value from register */
+		regval = em28xx_read_reg(dev, dev->button_polling_addresses[i]);
+		if (regval < 0)
+			continue;
+		/* Check states of the buttons and act */
+		j = 0;
+		while (dev->board.buttons[j].role >= 0 &&
+		       dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) {
+			const struct em28xx_button *button;
+
+			button = &dev->board.buttons[j];
+
+			/* Check if button uses the current address */
+			if (button->reg_r != dev->button_polling_addresses[i]) {
+				j++;
+				continue;
+			}
+			/* Determine if button is and was pressed last time */
+			is_pressed = regval & button->mask;
+			was_pressed = dev->button_polling_last_values[i]
+				       & button->mask;
+			if (button->inverted) {
+				is_pressed = !is_pressed;
+				was_pressed = !was_pressed;
+			}
+			/* Clear button state (if needed) */
+			if (is_pressed && button->reg_clearing)
+				em28xx_write_reg(dev, button->reg_clearing,
+						 (~regval & button->mask)
+						    | (regval & ~button->mask));
+			/* Handle button state */
+			if (!is_pressed || was_pressed) {
+				j++;
+				continue;
+			}
+			switch (button->role) {
+			case EM28XX_BUTTON_SNAPSHOT:
+				/* Emulate the keypress */
+				input_report_key(dev->sbutton_input_dev,
+						 EM28XX_SNAPSHOT_KEY, 1);
+				/* Unpress the key */
+				input_report_key(dev->sbutton_input_dev,
+						 EM28XX_SNAPSHOT_KEY, 0);
+				break;
+			case EM28XX_BUTTON_ILLUMINATION:
+				led = em28xx_find_led(dev,
+						      EM28XX_LED_ILLUMINATION);
+				/* Switch illumination LED on/off */
+				if (led)
+					em28xx_toggle_reg_bits(dev,
+							       led->gpio_reg,
+							       led->gpio_mask);
+				break;
+			default:
+				WARN_ONCE(1, "BUG: unhandled button role.");
+			}
+			/* Next button */
+			j++;
+		}
+		/* Save current value for comparison during the next polling */
+		dev->button_polling_last_values[i] = regval;
+	}
+	/* Schedule next poll */
+	schedule_delayed_work(&dev->buttons_query_work,
+			      msecs_to_jiffies(dev->button_polling_interval));
+}
+
+static int em28xx_register_snapshot_button(struct em28xx *dev)
+{
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	struct input_dev *input_dev;
+	int err;
+
+	dev_info(&dev->intf->dev, "Registering snapshot button...\n");
+	input_dev = input_allocate_device();
+	if (!input_dev)
+		return -ENOMEM;
+
+	usb_make_path(udev, dev->snapshot_button_path,
+		      sizeof(dev->snapshot_button_path));
+	strlcat(dev->snapshot_button_path, "/sbutton",
+		sizeof(dev->snapshot_button_path));
+
+	input_dev->name = "em28xx snapshot button";
+	input_dev->phys = dev->snapshot_button_path;
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+	set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit);
+	input_dev->keycodesize = 0;
+	input_dev->keycodemax = 0;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &dev->intf->dev;
+
+	err = input_register_device(input_dev);
+	if (err) {
+		dev_err(&dev->intf->dev, "input_register_device failed\n");
+		input_free_device(input_dev);
+		return err;
+	}
+
+	dev->sbutton_input_dev = input_dev;
+	return 0;
+}
+
+static void em28xx_init_buttons(struct em28xx *dev)
+{
+	u8  i = 0, j = 0;
+	bool addr_new = false;
+
+	dev->button_polling_interval = EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL;
+	while (dev->board.buttons[i].role >= 0 &&
+	       dev->board.buttons[i].role < EM28XX_NUM_BUTTON_ROLES) {
+		const struct em28xx_button *button = &dev->board.buttons[i];
+
+		/* Check if polling address is already on the list */
+		addr_new = true;
+		for (j = 0; j < dev->num_button_polling_addresses; j++) {
+			if (button->reg_r == dev->button_polling_addresses[j]) {
+				addr_new = false;
+				break;
+			}
+		}
+		/* Check if max. number of polling addresses is exceeded */
+		if (addr_new && dev->num_button_polling_addresses
+					   >= EM28XX_NUM_BUTTON_ADDRESSES_MAX) {
+			WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded.");
+			goto next_button;
+		}
+		/* Button role specific checks and actions */
+		if (button->role == EM28XX_BUTTON_SNAPSHOT) {
+			/* Register input device */
+			if (em28xx_register_snapshot_button(dev) < 0)
+				goto next_button;
+		} else if (button->role == EM28XX_BUTTON_ILLUMINATION) {
+			/* Check sanity */
+			if (!em28xx_find_led(dev, EM28XX_LED_ILLUMINATION)) {
+				dev_err(&dev->intf->dev,
+					"BUG: illumination button defined, but no illumination LED.\n");
+				goto next_button;
+			}
+		}
+		/* Add read address to list of polling addresses */
+		if (addr_new) {
+			unsigned int index = dev->num_button_polling_addresses;
+
+			dev->button_polling_addresses[index] = button->reg_r;
+			dev->num_button_polling_addresses++;
+		}
+		/* Reduce polling interval if necessary */
+		if (!button->reg_clearing)
+			dev->button_polling_interval =
+					 EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL;
+next_button:
+		/* Next button */
+		i++;
+	}
+
+	/* Start polling */
+	if (dev->num_button_polling_addresses) {
+		memset(dev->button_polling_last_values, 0,
+		       EM28XX_NUM_BUTTON_ADDRESSES_MAX);
+		schedule_delayed_work(&dev->buttons_query_work,
+				      msecs_to_jiffies(dev->button_polling_interval));
+	}
+}
+
+static void em28xx_shutdown_buttons(struct em28xx *dev)
+{
+	/* Cancel polling */
+	cancel_delayed_work_sync(&dev->buttons_query_work);
+	/* Clear polling addresses list */
+	dev->num_button_polling_addresses = 0;
+	/* Deregister input devices */
+	if (dev->sbutton_input_dev) {
+		dev_info(&dev->intf->dev, "Deregistering snapshot button\n");
+		input_unregister_device(dev->sbutton_input_dev);
+		dev->sbutton_input_dev = NULL;
+	}
+}
+
+static int em28xx_ir_init(struct em28xx *dev)
+{
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	struct em28xx_IR *ir;
+	struct rc_dev *rc;
+	int err = -ENOMEM;
+	u64 rc_proto;
+	u16 i2c_rc_dev_addr = 0;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	kref_get(&dev->ref);
+	INIT_DELAYED_WORK(&dev->buttons_query_work, em28xx_query_buttons);
+
+	if (dev->board.buttons)
+		em28xx_init_buttons(dev);
+
+	if (dev->board.has_ir_i2c) {
+		i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev);
+		if (!i2c_rc_dev_addr) {
+			dev->board.has_ir_i2c = 0;
+			dev_warn(&dev->intf->dev,
+				 "No i2c IR remote control device found.\n");
+			err = -ENODEV;
+			goto ref_put;
+		}
+	}
+
+	if (!dev->board.ir_codes && !dev->board.has_ir_i2c) {
+		/* No remote control support */
+		dev_warn(&dev->intf->dev,
+			 "Remote control support is not available for this card.\n");
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Registering input extension\n");
+
+	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
+	if (!ir)
+		goto ref_put;
+	rc = rc_allocate_device(RC_DRIVER_SCANCODE);
+	if (!rc)
+		goto error;
+
+	/* record handles to ourself */
+	ir->dev = dev;
+	dev->ir = ir;
+	ir->rc = rc;
+
+	rc->priv = ir;
+	rc->open = em28xx_ir_start;
+	rc->close = em28xx_ir_stop;
+
+	if (dev->board.has_ir_i2c) {	/* external i2c device */
+		switch (dev->model) {
+		case EM2800_BOARD_TERRATEC_CINERGY_200:
+		case EM2820_BOARD_TERRATEC_CINERGY_250:
+			rc->map_name = RC_MAP_EM_TERRATEC;
+			ir->get_key_i2c = em28xx_get_key_terratec;
+			break;
+		case EM2820_BOARD_PINNACLE_USB_2:
+			rc->map_name = RC_MAP_PINNACLE_GREY;
+			ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey;
+			break;
+		case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
+			rc->map_name = RC_MAP_HAUPPAUGE;
+			ir->get_key_i2c = em28xx_get_key_em_haup;
+			rc->allowed_protocols = RC_PROTO_BIT_RC5;
+			break;
+		case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE:
+			rc->map_name = RC_MAP_WINFAST_USBII_DELUXE;
+			ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe;
+			break;
+		default:
+			err = -ENODEV;
+			goto error;
+		}
+
+		ir->i2c_client = kzalloc(sizeof(*ir->i2c_client), GFP_KERNEL);
+		if (!ir->i2c_client)
+			goto error;
+		ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus];
+		ir->i2c_client->addr = i2c_rc_dev_addr;
+		ir->i2c_client->flags = 0;
+		/* NOTE: all other fields of i2c_client are unused */
+	} else {	/* internal device */
+		switch (dev->chip_id) {
+		case CHIP_ID_EM2860:
+		case CHIP_ID_EM2883:
+			rc->allowed_protocols = RC_PROTO_BIT_RC5 |
+						RC_PROTO_BIT_NEC;
+			ir->get_key = default_polling_getkey;
+			break;
+		case CHIP_ID_EM2884:
+		case CHIP_ID_EM2874:
+		case CHIP_ID_EM28174:
+		case CHIP_ID_EM28178:
+			ir->get_key = em2874_polling_getkey;
+			rc->allowed_protocols = RC_PROTO_BIT_RC5 |
+				RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
+				RC_PROTO_BIT_NEC32 | RC_PROTO_BIT_RC6_0;
+			break;
+		default:
+			err = -ENODEV;
+			goto error;
+		}
+
+		rc->change_protocol = em28xx_ir_change_protocol;
+		rc->map_name = dev->board.ir_codes;
+
+		/* By default, keep protocol field untouched */
+		rc_proto = RC_PROTO_BIT_UNKNOWN;
+		err = em28xx_ir_change_protocol(rc, &rc_proto);
+		if (err)
+			goto error;
+	}
+
+	/* This is how often we ask the chip for IR information */
+	ir->polling = 100; /* ms */
+
+	usb_make_path(udev, ir->phys, sizeof(ir->phys));
+	strlcat(ir->phys, "/input0", sizeof(ir->phys));
+
+	rc->device_name = em28xx_boards[dev->model].name;
+	rc->input_phys = ir->phys;
+	usb_to_input_id(udev, &rc->input_id);
+	rc->dev.parent = &dev->intf->dev;
+	rc->driver_name = MODULE_NAME;
+
+	/* all done */
+	err = rc_register_device(rc);
+	if (err)
+		goto error;
+
+	dev_info(&dev->intf->dev, "Input extension successfully initialized\n");
+
+	return 0;
+
+error:
+	kfree(ir->i2c_client);
+	dev->ir = NULL;
+	rc_free_device(rc);
+	kfree(ir);
+ref_put:
+	em28xx_shutdown_buttons(dev);
+	return err;
+}
+
+static int em28xx_ir_fini(struct em28xx *dev)
+{
+	struct em28xx_IR *ir = dev->ir;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Closing input extension\n");
+
+	em28xx_shutdown_buttons(dev);
+
+	/* skip detach on non attached boards */
+	if (!ir)
+		goto ref_put;
+
+	rc_unregister_device(ir->rc);
+
+	kfree(ir->i2c_client);
+
+	/* done */
+	kfree(ir);
+	dev->ir = NULL;
+
+ref_put:
+	kref_put(&dev->ref, em28xx_free_device);
+
+	return 0;
+}
+
+static int em28xx_ir_suspend(struct em28xx *dev)
+{
+	struct em28xx_IR *ir = dev->ir;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Suspending input extension\n");
+	if (ir)
+		cancel_delayed_work_sync(&ir->work);
+	cancel_delayed_work_sync(&dev->buttons_query_work);
+	/*
+	 * is canceling delayed work sufficient or does the rc event
+	 * kthread needs stopping? kthread is stopped in
+	 * ir_raw_event_unregister()
+	 */
+	return 0;
+}
+
+static int em28xx_ir_resume(struct em28xx *dev)
+{
+	struct em28xx_IR *ir = dev->ir;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Resuming input extension\n");
+	/*
+	 * if suspend calls ir_raw_event_unregister(), the should call
+	 * ir_raw_event_register()
+	 */
+	if (ir)
+		schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
+	if (dev->num_button_polling_addresses)
+		schedule_delayed_work(&dev->buttons_query_work,
+				      msecs_to_jiffies(dev->button_polling_interval));
+	return 0;
+}
+
+static struct em28xx_ops rc_ops = {
+	.id   = EM28XX_RC,
+	.name = "Em28xx Input Extension",
+	.init = em28xx_ir_init,
+	.fini = em28xx_ir_fini,
+	.suspend = em28xx_ir_suspend,
+	.resume = em28xx_ir_resume,
+};
+
+static int __init em28xx_rc_register(void)
+{
+	return em28xx_register_extension(&rc_ops);
+}
+
+static void __exit em28xx_rc_unregister(void)
+{
+	em28xx_unregister_extension(&rc_ops);
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Mauro Carvalho Chehab");
+MODULE_DESCRIPTION(DRIVER_DESC " - input interface");
+MODULE_VERSION(EM28XX_VERSION);
+
+module_init(em28xx_rc_register);
+module_exit(em28xx_rc_unregister);
diff --git a/drivers/media/usb/em28xx/em28xx-reg.h b/drivers/media/usb/em28xx/em28xx-reg.h
new file mode 100644
index 000000000..d7c608628
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-reg.h
@@ -0,0 +1,301 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * em28xx-reg.h - Register definitions for em28xx driver
+ */
+
+#define EM_GPIO_0  ((unsigned char)BIT(0))
+#define EM_GPIO_1  ((unsigned char)BIT(1))
+#define EM_GPIO_2  ((unsigned char)BIT(2))
+#define EM_GPIO_3  ((unsigned char)BIT(3))
+#define EM_GPIO_4  ((unsigned char)BIT(4))
+#define EM_GPIO_5  ((unsigned char)BIT(5))
+#define EM_GPIO_6  ((unsigned char)BIT(6))
+#define EM_GPIO_7  ((unsigned char)BIT(7))
+
+#define EM_GPO_0   ((unsigned char)BIT(0))
+#define EM_GPO_1   ((unsigned char)BIT(1))
+#define EM_GPO_2   ((unsigned char)BIT(2))
+#define EM_GPO_3   ((unsigned char)BIT(3))
+
+/* em28xx endpoints */
+/* 0x82:   (always ?) analog */
+#define EM28XX_EP_AUDIO		0x83
+/* 0x84:   digital or analog */
+
+/* em2800 registers */
+#define EM2800_R08_AUDIOSRC 0x08
+
+/* em28xx registers */
+
+#define EM28XX_R00_CHIPCFG	0x00
+
+/* em28xx Chip Configuration 0x00 */
+#define EM2860_CHIPCFG_VENDOR_AUDIO		0x80
+#define EM2860_CHIPCFG_I2S_VOLUME_CAPABLE	0x40
+#define EM2820_CHIPCFG_I2S_3_SAMPRATES		0x30
+#define EM2860_CHIPCFG_I2S_5_SAMPRATES		0x30
+#define EM2820_CHIPCFG_I2S_1_SAMPRATE		0x20
+#define EM2860_CHIPCFG_I2S_3_SAMPRATES		0x20
+#define EM28XX_CHIPCFG_AC97			0x10
+#define EM28XX_CHIPCFG_AUDIOMASK		0x30
+
+#define EM28XX_R01_CHIPCFG2	0x01
+
+/* em28xx Chip Configuration 2 0x01 */
+#define EM28XX_CHIPCFG2_TS_PRESENT		0x10
+#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_MASK	0x0c /* bits 3-2 */
+#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_1MF	0x00
+#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_2MF	0x04
+#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_4MF	0x08
+#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_8MF	0x0c
+#define EM28XX_CHIPCFG2_TS_PACKETSIZE_MASK	0x03 /* bits 0-1 */
+#define EM28XX_CHIPCFG2_TS_PACKETSIZE_188	0x00
+#define EM28XX_CHIPCFG2_TS_PACKETSIZE_376	0x01
+#define EM28XX_CHIPCFG2_TS_PACKETSIZE_564	0x02
+#define EM28XX_CHIPCFG2_TS_PACKETSIZE_752	0x03
+
+/* GPIO/GPO registers */
+#define EM2880_R04_GPO		0x04    /* em2880-em2883 only */
+#define EM2820_R08_GPIO_CTRL	0x08	/* em2820-em2873/83 only */
+#define EM2820_R09_GPIO_STATE	0x09	/* em2820-em2873/83 only */
+
+#define EM28XX_R06_I2C_CLK	0x06
+
+/* em28xx I2C Clock Register (0x06) */
+#define EM28XX_I2C_CLK_ACK_LAST_READ	0x80
+#define EM28XX_I2C_CLK_WAIT_ENABLE	0x40
+#define EM28XX_I2C_EEPROM_ON_BOARD	0x08
+#define EM28XX_I2C_EEPROM_KEY_VALID	0x04
+#define EM2874_I2C_SECONDARY_BUS_SELECT	0x04 /* em2874 has two i2c buses */
+#define EM28XX_I2C_FREQ_1_5_MHZ		0x03 /* bus frequency (bits [1-0]) */
+#define EM28XX_I2C_FREQ_25_KHZ		0x02
+#define EM28XX_I2C_FREQ_400_KHZ		0x01
+#define EM28XX_I2C_FREQ_100_KHZ		0x00
+
+#define EM28XX_R0A_CHIPID	0x0a
+#define EM28XX_R0C_USBSUSP	0x0c
+#define   EM28XX_R0C_USBSUSP_SNAPSHOT	0x20 /* 1=button pressed, needs reset */
+
+#define EM28XX_R0E_AUDIOSRC	0x0e
+#define EM28XX_R0F_XCLK	0x0f
+
+/* em28xx XCLK Register (0x0f) */
+#define EM28XX_XCLK_AUDIO_UNMUTE	0x80 /* otherwise audio muted */
+#define EM28XX_XCLK_I2S_MSB_TIMING	0x40 /* otherwise standard timing */
+#define EM28XX_XCLK_IR_RC5_MODE		0x20 /* otherwise NEC mode */
+#define EM28XX_XCLK_IR_NEC_CHK_PARITY	0x10
+#define EM28XX_XCLK_FREQUENCY_30MHZ	0x00 /* Freq. select (bits [3-0]) */
+#define EM28XX_XCLK_FREQUENCY_15MHZ	0x01
+#define EM28XX_XCLK_FREQUENCY_10MHZ	0x02
+#define EM28XX_XCLK_FREQUENCY_7_5MHZ	0x03
+#define EM28XX_XCLK_FREQUENCY_6MHZ	0x04
+#define EM28XX_XCLK_FREQUENCY_5MHZ	0x05
+#define EM28XX_XCLK_FREQUENCY_4_3MHZ	0x06
+#define EM28XX_XCLK_FREQUENCY_12MHZ	0x07
+#define EM28XX_XCLK_FREQUENCY_20MHZ	0x08
+#define EM28XX_XCLK_FREQUENCY_20MHZ_2	0x09
+#define EM28XX_XCLK_FREQUENCY_48MHZ	0x0a
+#define EM28XX_XCLK_FREQUENCY_24MHZ	0x0b
+
+#define EM28XX_R10_VINMODE	0x10
+	  /* used by all non-camera devices: */
+#define   EM28XX_VINMODE_YUV422_CbYCrY  0x10
+	  /* used by camera devices: */
+#define   EM28XX_VINMODE_YUV422_YUYV    0x08
+#define   EM28XX_VINMODE_YUV422_YVYU    0x09
+#define   EM28XX_VINMODE_YUV422_UYVY    0x0a
+#define   EM28XX_VINMODE_YUV422_VYUY    0x0b
+#define   EM28XX_VINMODE_RGB8_BGGR      0x0c
+#define   EM28XX_VINMODE_RGB8_GRBG      0x0d
+#define   EM28XX_VINMODE_RGB8_GBRG      0x0e
+#define   EM28XX_VINMODE_RGB8_RGGB      0x0f
+	  /*
+	   * apparently:
+	   *   bit 0: swap component 1+2 with 3+4
+	   *                 => e.g.: YUYV => YVYU, BGGR => GRBG
+	   *   bit 1: swap component 1 with 2 and 3 with 4
+	   *                 => e.g.: YUYV => UYVY, BGGR => GBRG
+	   */
+
+#define EM28XX_R11_VINCTRL	0x11
+
+/* em28xx Video Input Control Register 0x11 */
+#define EM28XX_VINCTRL_VBI_SLICED	0x80
+#define EM28XX_VINCTRL_VBI_RAW		0x40
+#define EM28XX_VINCTRL_VOUT_MODE_IN	0x20 /* HREF,VREF,VACT in output */
+#define EM28XX_VINCTRL_CCIR656_ENABLE	0x10
+#define EM28XX_VINCTRL_VBI_16BIT_RAW	0x08 /* otherwise 8-bit raw */
+#define EM28XX_VINCTRL_FID_ON_HREF	0x04
+#define EM28XX_VINCTRL_DUAL_EDGE_STROBE	0x02
+#define EM28XX_VINCTRL_INTERLACED	0x01
+
+#define EM28XX_R12_VINENABLE	0x12	/* */
+
+#define EM28XX_R14_GAMMA	0x14
+#define EM28XX_R15_RGAIN	0x15
+#define EM28XX_R16_GGAIN	0x16
+#define EM28XX_R17_BGAIN	0x17
+#define EM28XX_R18_ROFFSET	0x18
+#define EM28XX_R19_GOFFSET	0x19
+#define EM28XX_R1A_BOFFSET	0x1a
+
+#define EM28XX_R1B_OFLOW	0x1b
+#define EM28XX_R1C_HSTART	0x1c
+#define EM28XX_R1D_VSTART	0x1d
+#define EM28XX_R1E_CWIDTH	0x1e
+#define EM28XX_R1F_CHEIGHT	0x1f
+
+#define EM28XX_R20_YGAIN	0x20 /* contrast [0:4]   */
+#define   CONTRAST_DEFAULT	0x10
+
+#define EM28XX_R21_YOFFSET	0x21 /* brightness       */	/* signed */
+#define   BRIGHTNESS_DEFAULT	0x00
+
+#define EM28XX_R22_UVGAIN	0x22 /* saturation [0:4] */
+#define   SATURATION_DEFAULT	0x10
+
+#define EM28XX_R23_UOFFSET	0x23 /* blue balance     */	/* signed */
+#define   BLUE_BALANCE_DEFAULT	0x00
+
+#define EM28XX_R24_VOFFSET	0x24 /* red balance      */	/* signed */
+#define   RED_BALANCE_DEFAULT	0x00
+
+#define EM28XX_R25_SHARPNESS	0x25 /* sharpness [0:4]  */
+#define   SHARPNESS_DEFAULT	0x00
+
+#define EM28XX_R26_COMPR	0x26
+#define EM28XX_R27_OUTFMT	0x27
+
+/* em28xx Output Format Register (0x27) */
+#define EM28XX_OUTFMT_RGB_8_RGRG	0x00
+#define EM28XX_OUTFMT_RGB_8_GRGR	0x01
+#define EM28XX_OUTFMT_RGB_8_GBGB	0x02
+#define EM28XX_OUTFMT_RGB_8_BGBG	0x03
+#define EM28XX_OUTFMT_RGB_16_656	0x04
+#define EM28XX_OUTFMT_RGB_8_BAYER	0x08 /* Pattern in Reg 0x10[1-0] */
+#define EM28XX_OUTFMT_YUV211		0x10
+#define EM28XX_OUTFMT_YUV422_Y0UY1V	0x14
+#define EM28XX_OUTFMT_YUV422_Y1UY0V	0x15
+#define EM28XX_OUTFMT_YUV411		0x18
+
+#define EM28XX_R28_XMIN	0x28
+#define EM28XX_R29_XMAX	0x29
+#define EM28XX_R2A_YMIN	0x2a
+#define EM28XX_R2B_YMAX	0x2b
+
+#define EM28XX_R30_HSCALELOW	0x30
+#define EM28XX_R31_HSCALEHIGH	0x31
+#define EM28XX_R32_VSCALELOW	0x32
+#define EM28XX_R33_VSCALEHIGH	0x33
+#define   EM28XX_HVSCALE_MAX	0x3fff /* => 20% */
+
+#define EM28XX_R34_VBI_START_H	0x34
+#define EM28XX_R35_VBI_START_V	0x35
+/*
+ * NOTE: the EM276x (and EM25xx, EM277x/8x ?) (camera bridges) use these
+ * registers for a different unknown purpose.
+ *   => register 0x34 is set to capture width / 16
+ *   => register 0x35 is set to capture height / 16
+ */
+
+#define EM28XX_R36_VBI_WIDTH	0x36
+#define EM28XX_R37_VBI_HEIGHT	0x37
+
+#define EM28XX_R40_AC97LSB	0x40
+#define EM28XX_R41_AC97MSB	0x41
+#define EM28XX_R42_AC97ADDR	0x42
+#define EM28XX_R43_AC97BUSY	0x43
+
+#define EM28XX_R45_IR		0x45
+	/*
+	 * 0x45  bit 7    - parity bit
+	 *	 bits 6-0 - count
+	 * 0x46  IR brand
+	 *  0x47  IR data
+	 */
+
+/* em2874 registers */
+#define EM2874_R50_IR_CONFIG    0x50
+#define EM2874_R51_IR           0x51
+#define EM2874_R5D_TS1_PKT_SIZE 0x5d
+#define EM2874_R5E_TS2_PKT_SIZE 0x5e
+	/*
+	 * For both TS1 and TS2, In isochronous mode:
+	 *  0x01  188 bytes
+	 *  0x02  376 bytes
+	 *  0x03  564 bytes
+	 *  0x04  752 bytes
+	 *  0x05  940 bytes
+	 * In bulk mode:
+	 *  0x01..0xff  total packet count in 188-byte
+	 */
+
+#define EM2874_R5F_TS_ENABLE    0x5f
+
+/* em2874/174/84, em25xx, em276x/7x/8x GPIO registers */
+/*
+ * NOTE: not all ports are bonded out;
+ * Some ports are multiplexed with special function I/O
+ */
+#define EM2874_R80_GPIO_P0_CTRL    0x80
+#define EM2874_R81_GPIO_P1_CTRL    0x81
+#define EM2874_R82_GPIO_P2_CTRL    0x82
+#define EM2874_R83_GPIO_P3_CTRL    0x83
+#define EM2874_R84_GPIO_P0_STATE   0x84
+#define EM2874_R85_GPIO_P1_STATE   0x85
+#define EM2874_R86_GPIO_P2_STATE   0x86
+#define EM2874_R87_GPIO_P3_STATE   0x87
+
+/* em2874 IR config register (0x50) */
+#define EM2874_IR_NEC           0x00
+#define EM2874_IR_NEC_NO_PARITY 0x01
+#define EM2874_IR_RC5           0x04
+#define EM2874_IR_RC6_MODE_0    0x08
+#define EM2874_IR_RC6_MODE_6A   0x0b
+
+/* em2874 Transport Stream Enable Register (0x5f) */
+#define EM2874_TS1_CAPTURE_ENABLE ((unsigned char)BIT(0))
+#define EM2874_TS1_FILTER_ENABLE  ((unsigned char)BIT(1))
+#define EM2874_TS1_NULL_DISCARD   ((unsigned char)BIT(2))
+#define EM2874_TS2_CAPTURE_ENABLE ((unsigned char)BIT(4))
+#define EM2874_TS2_FILTER_ENABLE  ((unsigned char)BIT(5))
+#define EM2874_TS2_NULL_DISCARD   ((unsigned char)BIT(6))
+
+/* register settings */
+#define EM2800_AUDIO_SRC_TUNER  0x0d
+#define EM2800_AUDIO_SRC_LINE   0x0c
+#define EM28XX_AUDIO_SRC_TUNER	0xc0
+#define EM28XX_AUDIO_SRC_LINE	0x80
+
+/* FIXME: Need to be populated with the other chip ID's */
+enum em28xx_chip_id {
+	CHIP_ID_EM2800 = 7,
+	CHIP_ID_EM2710 = 17,
+	CHIP_ID_EM2820 = 18,	/* Also used by some em2710 */
+	CHIP_ID_EM2840 = 20,
+	CHIP_ID_EM2750 = 33,
+	CHIP_ID_EM2860 = 34,
+	CHIP_ID_EM2870 = 35,
+	CHIP_ID_EM2883 = 36,
+	CHIP_ID_EM2765 = 54,
+	CHIP_ID_EM2874 = 65,
+	CHIP_ID_EM2884 = 68,
+	CHIP_ID_EM28174 = 113,
+	CHIP_ID_EM28178 = 114,
+};
+
+/*
+ * Registers used by em202
+ */
+
+/* EMP202 vendor registers */
+#define EM202_EXT_MODEM_CTRL     0x3e
+#define EM202_GPIO_CONF          0x4c
+#define EM202_GPIO_POLARITY      0x4e
+#define EM202_GPIO_STICKY        0x50
+#define EM202_GPIO_MASK          0x52
+#define EM202_GPIO_STATUS        0x54
+#define EM202_SPDIF_OUT_SEL      0x6a
+#define EM202_ANTIPOP            0x72
+#define EM202_EAPD_GPIO_ACCESS   0x74
diff --git a/drivers/media/usb/em28xx/em28xx-v4l.h b/drivers/media/usb/em28xx/em28xx-v4l.h
new file mode 100644
index 000000000..6216cdd18
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-v4l.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
+ *		    video capture devices
+ *
+ * Copyright (C) 2013-2014 Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
+void em28xx_stop_vbi_streaming(struct vb2_queue *vq);
+extern const struct vb2_ops em28xx_vbi_qops;
diff --git a/drivers/media/usb/em28xx/em28xx-vbi.c b/drivers/media/usb/em28xx/em28xx-vbi.c
new file mode 100644
index 000000000..63c48361d
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-vbi.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-vbi.c - VBI driver for em28xx
+//
+// Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
+//
+// This work was sponsored by EyeMagnet Limited.
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/hardirq.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+
+#include "em28xx-v4l.h"
+
+/* ------------------------------------------------------------------ */
+
+static int vbi_queue_setup(struct vb2_queue *vq,
+			   unsigned int *nbuffers, unsigned int *nplanes,
+			   unsigned int sizes[], struct device *alloc_devs[])
+{
+	struct em28xx *dev = vb2_get_drv_priv(vq);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	unsigned long size = v4l2->vbi_width * v4l2->vbi_height * 2;
+
+	if (*nbuffers < 2)
+		*nbuffers = 2;
+
+	if (*nplanes) {
+		if (sizes[0] < size)
+			return -EINVAL;
+		size = sizes[0];
+	}
+
+	*nplanes = 1;
+	sizes[0] = size;
+
+	return 0;
+}
+
+static int vbi_buffer_prepare(struct vb2_buffer *vb)
+{
+	struct em28xx        *dev  = vb2_get_drv_priv(vb->vb2_queue);
+	struct em28xx_v4l2   *v4l2 = dev->v4l2;
+	unsigned long        size;
+
+	size = v4l2->vbi_width * v4l2->vbi_height * 2;
+
+	if (vb2_plane_size(vb, 0) < size) {
+		dev_info(&dev->intf->dev,
+			 "%s data will not fit into plane (%lu < %lu)\n",
+			 __func__, vb2_plane_size(vb, 0), size);
+		return -EINVAL;
+	}
+	vb2_set_plane_payload(vb, 0, size);
+
+	return 0;
+}
+
+static void
+vbi_buffer_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
+	struct em28xx_buffer *buf =
+		container_of(vbuf, struct em28xx_buffer, vb);
+	struct em28xx_dmaqueue *vbiq = &dev->vbiq;
+	unsigned long flags = 0;
+
+	buf->mem = vb2_plane_vaddr(vb, 0);
+	buf->length = vb2_plane_size(vb, 0);
+
+	spin_lock_irqsave(&dev->slock, flags);
+	list_add_tail(&buf->list, &vbiq->active);
+	spin_unlock_irqrestore(&dev->slock, flags);
+}
+
+const struct vb2_ops em28xx_vbi_qops = {
+	.queue_setup    = vbi_queue_setup,
+	.buf_prepare    = vbi_buffer_prepare,
+	.buf_queue      = vbi_buffer_queue,
+	.start_streaming = em28xx_start_analog_streaming,
+	.stop_streaming = em28xx_stop_vbi_streaming,
+	.wait_prepare   = vb2_ops_wait_prepare,
+	.wait_finish    = vb2_ops_wait_finish,
+};
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
new file mode 100644
index 000000000..6b84c3413
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -0,0 +1,2936 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
+//		    video capture devices
+//
+// Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
+//		      Markus Rechberger <mrechberger@gmail.com>
+//		      Mauro Carvalho Chehab <mchehab@kernel.org>
+//		      Sascha Sommer <saschasommer@freenet.de>
+// Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+//
+//	Some parts based on SN9C10x PC Camera Controllers GPL driver made
+//		by Luca Risolia <luca.risolia@studio.unibo.it>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include "em28xx.h"
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/bitmap.h>
+#include <linux/usb.h>
+#include <linux/i2c.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include "em28xx-v4l.h"
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-event.h>
+#include <media/drv-intf/msp3400.h>
+#include <media/tuner.h>
+
+#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
+		      "Markus Rechberger <mrechberger@gmail.com>, " \
+		      "Mauro Carvalho Chehab <mchehab@kernel.org>, " \
+		      "Sascha Sommer <saschasommer@freenet.de>"
+
+static unsigned int isoc_debug;
+module_param(isoc_debug, int, 0644);
+MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
+
+static unsigned int disable_vbi;
+module_param(disable_vbi, int, 0644);
+MODULE_PARM_DESC(disable_vbi, "disable vbi support");
+
+static int alt;
+module_param(alt, int, 0644);
+MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
+
+#define em28xx_videodbg(fmt, arg...) do {				\
+	if (video_debug)						\
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "video: %s: " fmt, __func__, ## arg);	\
+} while (0)
+
+#define em28xx_isocdbg(fmt, arg...) do {\
+	if (isoc_debug) \
+		dev_printk(KERN_DEBUG, &dev->intf->dev,			\
+			   "isoc: %s: " fmt, __func__, ## arg);		\
+} while (0)
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC " - v4l2 interface");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(EM28XX_VERSION);
+
+#define EM25XX_FRMDATAHDR_BYTE1			0x02
+#define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE	0x20
+#define EM25XX_FRMDATAHDR_BYTE2_FRAME_END	0x02
+#define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID	0x01
+#define EM25XX_FRMDATAHDR_BYTE2_MASK	(EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \
+					 EM25XX_FRMDATAHDR_BYTE2_FRAME_END |   \
+					 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID)
+
+static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
+static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
+static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
+
+module_param_array(video_nr, int, NULL, 0444);
+module_param_array(vbi_nr, int, NULL, 0444);
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(video_nr, "video device numbers");
+MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
+MODULE_PARM_DESC(radio_nr, "radio device numbers");
+
+static unsigned int video_debug;
+module_param(video_debug, int, 0644);
+MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
+
+/* supported video standards */
+static struct em28xx_fmt format[] = {
+	{
+		.fourcc   = V4L2_PIX_FMT_YUYV,
+		.depth    = 16,
+		.reg	  = EM28XX_OUTFMT_YUV422_Y0UY1V,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_RGB565,
+		.depth    = 16,
+		.reg      = EM28XX_OUTFMT_RGB_16_656,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_SRGGB8,
+		.depth    = 8,
+		.reg      = EM28XX_OUTFMT_RGB_8_RGRG,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_SBGGR8,
+		.depth    = 8,
+		.reg      = EM28XX_OUTFMT_RGB_8_BGBG,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_SGRBG8,
+		.depth    = 8,
+		.reg      = EM28XX_OUTFMT_RGB_8_GRGR,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_SGBRG8,
+		.depth    = 8,
+		.reg      = EM28XX_OUTFMT_RGB_8_GBGB,
+	}, {
+		.fourcc   = V4L2_PIX_FMT_YUV411P,
+		.depth    = 12,
+		.reg      = EM28XX_OUTFMT_YUV411,
+	},
+};
+
+/*FIXME: maxw should be dependent of alt mode */
+static inline unsigned int norm_maxw(struct em28xx *dev)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	if (dev->is_webcam)
+		return v4l2->sensor_xres;
+
+	if (dev->board.max_range_640_480)
+		return 640;
+
+	return 720;
+}
+
+static inline unsigned int norm_maxh(struct em28xx *dev)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	if (dev->is_webcam)
+		return v4l2->sensor_yres;
+
+	if (dev->board.max_range_640_480)
+		return 480;
+
+	return (v4l2->norm & V4L2_STD_625_50) ? 576 : 480;
+}
+
+static int em28xx_vbi_supported(struct em28xx *dev)
+{
+	/* Modprobe option to manually disable */
+	if (disable_vbi == 1)
+		return 0;
+
+	if (dev->is_webcam)
+		return 0;
+
+	/* FIXME: check subdevices for VBI support */
+
+	if (dev->chip_id == CHIP_ID_EM2860 ||
+	    dev->chip_id == CHIP_ID_EM2883)
+		return 1;
+
+	/* Version of em28xx that does not support VBI */
+	return 0;
+}
+
+/*
+ * em28xx_wake_i2c()
+ * configure i2c attached devices
+ */
+static void em28xx_wake_i2c(struct em28xx *dev)
+{
+	struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev;
+
+	v4l2_device_call_all(v4l2_dev, 0, core,  reset, 0);
+	v4l2_device_call_all(v4l2_dev, 0, video, s_routing,
+			     INPUT(dev->ctl_input)->vmux, 0, 0);
+}
+
+static int em28xx_colorlevels_set_default(struct em28xx *dev)
+{
+	em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT);
+	em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT);
+	em28xx_write_reg(dev, EM28XX_R22_UVGAIN, SATURATION_DEFAULT);
+	em28xx_write_reg(dev, EM28XX_R23_UOFFSET, BLUE_BALANCE_DEFAULT);
+	em28xx_write_reg(dev, EM28XX_R24_VOFFSET, RED_BALANCE_DEFAULT);
+	em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, SHARPNESS_DEFAULT);
+
+	em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20);
+	em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20);
+	em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20);
+	em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20);
+	em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00);
+	em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00);
+	return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00);
+}
+
+static int em28xx_set_outfmt(struct em28xx *dev)
+{
+	int ret;
+	u8 fmt, vinctrl;
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	fmt = v4l2->format->reg;
+	if (!dev->is_em25xx)
+		fmt |= 0x20;
+	/*
+	 * NOTE: it's not clear if this is really needed !
+	 * The datasheets say bit 5 is a reserved bit and devices seem to work
+	 * fine without it. But the Windows driver sets it for em2710/50+em28xx
+	 * devices and we've always been setting it, too.
+	 *
+	 * em2765 (em25xx, em276x/7x/8x) devices do NOT work with this bit set,
+	 * it's likely used for an additional (compressed ?) format there.
+	 */
+	ret = em28xx_write_reg(dev, EM28XX_R27_OUTFMT, fmt);
+	if (ret < 0)
+		return ret;
+
+	ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, v4l2->vinmode);
+	if (ret < 0)
+		return ret;
+
+	vinctrl = v4l2->vinctl;
+	if (em28xx_vbi_supported(dev) == 1) {
+		vinctrl |= EM28XX_VINCTRL_VBI_RAW;
+		em28xx_write_reg(dev, EM28XX_R34_VBI_START_H, 0x00);
+		em28xx_write_reg(dev, EM28XX_R36_VBI_WIDTH,
+				 v4l2->vbi_width / 4);
+		em28xx_write_reg(dev, EM28XX_R37_VBI_HEIGHT, v4l2->vbi_height);
+		if (v4l2->norm & V4L2_STD_525_60) {
+			/* NTSC */
+			em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x09);
+		} else if (v4l2->norm & V4L2_STD_625_50) {
+			/* PAL */
+			em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x07);
+		}
+	}
+
+	return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, vinctrl);
+}
+
+static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax,
+				  u8 ymin, u8 ymax)
+{
+	em28xx_videodbg("em28xx Scale: (%d,%d)-(%d,%d)\n",
+			xmin, ymin, xmax, ymax);
+
+	em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1);
+	em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1);
+	em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1);
+	return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1);
+}
+
+static void em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart,
+				    u16 width, u16 height)
+{
+	u8 cwidth = width >> 2;
+	u8 cheight = height >> 2;
+	u8 overflow = (height >> 9 & 0x02) | (width >> 10 & 0x01);
+	/* NOTE: size limit: 2047x1023 = 2MPix */
+
+	em28xx_videodbg("capture area set to (%d,%d): %dx%d\n",
+			hstart, vstart,
+		       ((overflow & 2) << 9 | cwidth << 2),
+		       ((overflow & 1) << 10 | cheight << 2));
+
+	em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1);
+	em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1);
+	em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1);
+	em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1);
+	em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1);
+
+	/* FIXME: function/meaning of these registers ? */
+	/* FIXME: align width+height to multiples of 4 ?! */
+	if (dev->is_em25xx) {
+		em28xx_write_reg(dev, 0x34, width >> 4);
+		em28xx_write_reg(dev, 0x35, height >> 4);
+	}
+}
+
+static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v)
+{
+	u8 mode = 0x00;
+	/* the em2800 scaler only supports scaling down to 50% */
+
+	if (dev->board.is_em2800) {
+		mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00);
+	} else {
+		u8 buf[2];
+
+		buf[0] = h;
+		buf[1] = h >> 8;
+		em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2);
+
+		buf[0] = v;
+		buf[1] = v >> 8;
+		em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2);
+		/*
+		 * it seems that both H and V scalers must be active
+		 * to work correctly
+		 */
+		mode = (h || v) ? 0x30 : 0x00;
+	}
+	return em28xx_write_reg(dev, EM28XX_R26_COMPR, mode);
+}
+
+/* FIXME: this only function read values from dev */
+static int em28xx_resolution_set(struct em28xx *dev)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	int width = norm_maxw(dev);
+	int height = norm_maxh(dev);
+
+	/* Properly setup VBI */
+	v4l2->vbi_width = 720;
+	if (v4l2->norm & V4L2_STD_525_60)
+		v4l2->vbi_height = 12;
+	else
+		v4l2->vbi_height = 18;
+
+	em28xx_set_outfmt(dev);
+
+	em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2);
+
+	/*
+	 * If we don't set the start position to 2 in VBI mode, we end up
+	 * with line 20/21 being YUYV encoded instead of being in 8-bit
+	 * greyscale.  The core of the issue is that line 21 (and line 23 for
+	 * PAL WSS) are inside of active video region, and as a result they
+	 * get the pixelformatting associated with that area.  So by cropping
+	 * it out, we end up with the same format as the rest of the VBI
+	 * region
+	 */
+	if (em28xx_vbi_supported(dev) == 1)
+		em28xx_capture_area_set(dev, 0, 2, width, height);
+	else
+		em28xx_capture_area_set(dev, 0, 0, width, height);
+
+	return em28xx_scaler_set(dev, v4l2->hscale, v4l2->vscale);
+}
+
+/* Set USB alternate setting for analog video */
+static int em28xx_set_alternate(struct em28xx *dev)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int err;
+	int i;
+	unsigned int min_pkt_size = v4l2->width * 2 + 4;
+
+	/*
+	 * NOTE: for isoc transfers, only alt settings > 0 are allowed
+	 * bulk transfers seem to work only with alt=0 !
+	 */
+	dev->alt = 0;
+	if (alt > 0 && alt < dev->num_alt) {
+		em28xx_videodbg("alternate forced to %d\n", dev->alt);
+		dev->alt = alt;
+		goto set_alt;
+	}
+	if (dev->analog_xfer_bulk)
+		goto set_alt;
+
+	/*
+	 * When image size is bigger than a certain value,
+	 * the frame size should be increased, otherwise, only
+	 * green screen will be received.
+	 */
+	if (v4l2->width * 2 * v4l2->height > 720 * 240 * 2)
+		min_pkt_size *= 2;
+
+	for (i = 0; i < dev->num_alt; i++) {
+		/* stop when the selected alt setting offers enough bandwidth */
+		if (dev->alt_max_pkt_size_isoc[i] >= min_pkt_size) {
+			dev->alt = i;
+			break;
+		/*
+		 * otherwise make sure that we end up with the maximum
+		 * bandwidth because the min_pkt_size equation might be wrong.
+		 *
+		 */
+		} else if (dev->alt_max_pkt_size_isoc[i] >
+			   dev->alt_max_pkt_size_isoc[dev->alt])
+			dev->alt = i;
+	}
+
+set_alt:
+	/*
+	 * NOTE: for bulk transfers, we need to call usb_set_interface()
+	 * even if the previous settings were the same. Otherwise streaming
+	 * fails with all urbs having status = -EOVERFLOW !
+	 */
+	if (dev->analog_xfer_bulk) {
+		dev->max_pkt_size = 512; /* USB 2.0 spec */
+		dev->packet_multiplier = EM28XX_BULK_PACKET_MULTIPLIER;
+	} else { /* isoc */
+		em28xx_videodbg("minimum isoc packet size: %u (alt=%d)\n",
+				min_pkt_size, dev->alt);
+		dev->max_pkt_size =
+				  dev->alt_max_pkt_size_isoc[dev->alt];
+		dev->packet_multiplier = EM28XX_NUM_ISOC_PACKETS;
+	}
+	em28xx_videodbg("setting alternate %d with wMaxPacketSize=%u\n",
+			dev->alt, dev->max_pkt_size);
+	err = usb_set_interface(udev, dev->ifnum, dev->alt);
+	if (err < 0) {
+		dev_err(&dev->intf->dev,
+			"cannot change alternate number to %d (error=%i)\n",
+			dev->alt, err);
+		return err;
+	}
+	return 0;
+}
+
+/*
+ * DMA and thread functions
+ */
+
+/*
+ * Finish the current buffer
+ */
+static inline void finish_buffer(struct em28xx *dev,
+				 struct em28xx_buffer *buf)
+{
+	em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
+
+	buf->vb.sequence = dev->v4l2->field_count++;
+	if (dev->v4l2->progressive)
+		buf->vb.field = V4L2_FIELD_NONE;
+	else
+		buf->vb.field = V4L2_FIELD_INTERLACED;
+	buf->vb.vb2_buf.timestamp = ktime_get_ns();
+
+	vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+}
+
+/*
+ * Copy picture data from USB buffer to videobuf buffer
+ */
+static void em28xx_copy_video(struct em28xx *dev,
+			      struct em28xx_buffer *buf,
+			      unsigned char *usb_buf,
+			      unsigned long len)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	void *fieldstart, *startwrite, *startread;
+	int  linesdone, currlinedone, offset, lencopy, remain;
+	int bytesperline = v4l2->width << 1;
+
+	if (buf->pos + len > buf->length)
+		len = buf->length - buf->pos;
+
+	startread = usb_buf;
+	remain = len;
+
+	if (v4l2->progressive || buf->top_field)
+		fieldstart = buf->vb_buf;
+	else /* interlaced mode, even nr. of lines */
+		fieldstart = buf->vb_buf + bytesperline;
+
+	linesdone = buf->pos / bytesperline;
+	currlinedone = buf->pos % bytesperline;
+
+	if (v4l2->progressive)
+		offset = linesdone * bytesperline + currlinedone;
+	else
+		offset = linesdone * bytesperline * 2 + currlinedone;
+
+	startwrite = fieldstart + offset;
+	lencopy = bytesperline - currlinedone;
+	lencopy = lencopy > remain ? remain : lencopy;
+
+	if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
+		em28xx_isocdbg("Overflow of %zu bytes past buffer end (1)\n",
+			       ((char *)startwrite + lencopy) -
+			      ((char *)buf->vb_buf + buf->length));
+		remain = (char *)buf->vb_buf + buf->length -
+			 (char *)startwrite;
+		lencopy = remain;
+	}
+	if (lencopy <= 0)
+		return;
+	memcpy(startwrite, startread, lencopy);
+
+	remain -= lencopy;
+
+	while (remain > 0) {
+		if (v4l2->progressive)
+			startwrite += lencopy;
+		else
+			startwrite += lencopy + bytesperline;
+		startread += lencopy;
+		if (bytesperline > remain)
+			lencopy = remain;
+		else
+			lencopy = bytesperline;
+
+		if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
+		    buf->length) {
+			em28xx_isocdbg("Overflow of %zu bytes past buffer end(2)\n",
+				       ((char *)startwrite + lencopy) -
+				       ((char *)buf->vb_buf + buf->length));
+			remain = (char *)buf->vb_buf + buf->length -
+				 (char *)startwrite;
+			lencopy = remain;
+		}
+		if (lencopy <= 0)
+			break;
+
+		memcpy(startwrite, startread, lencopy);
+
+		remain -= lencopy;
+	}
+
+	buf->pos += len;
+}
+
+/*
+ * Copy VBI data from USB buffer to videobuf buffer
+ */
+static void em28xx_copy_vbi(struct em28xx *dev,
+			    struct em28xx_buffer *buf,
+			    unsigned char *usb_buf,
+			    unsigned long len)
+{
+	unsigned int offset;
+
+	if (buf->pos + len > buf->length)
+		len = buf->length - buf->pos;
+
+	offset = buf->pos;
+	/* Make sure the bottom field populates the second half of the frame */
+	if (buf->top_field == 0)
+		offset += dev->v4l2->vbi_width * dev->v4l2->vbi_height;
+
+	memcpy(buf->vb_buf + offset, usb_buf, len);
+	buf->pos += len;
+}
+
+static inline void print_err_status(struct em28xx *dev,
+				    int packet, int status)
+{
+	char *errmsg = "Unknown";
+
+	switch (status) {
+	case -ENOENT:
+		errmsg = "unlinked synchronously";
+		break;
+	case -ECONNRESET:
+		errmsg = "unlinked asynchronously";
+		break;
+	case -ENOSR:
+		errmsg = "Buffer error (overrun)";
+		break;
+	case -EPIPE:
+		errmsg = "Stalled (device not responding)";
+		break;
+	case -EOVERFLOW:
+		errmsg = "Babble (bad cable?)";
+		break;
+	case -EPROTO:
+		errmsg = "Bit-stuff error (bad cable?)";
+		break;
+	case -EILSEQ:
+		errmsg = "CRC/Timeout (could be anything)";
+		break;
+	case -ETIME:
+		errmsg = "Device does not respond";
+		break;
+	}
+	if (packet < 0) {
+		em28xx_isocdbg("URB status %d [%s].\n",	status, errmsg);
+	} else {
+		em28xx_isocdbg("URB packet %d, status %d [%s].\n",
+			       packet, status, errmsg);
+	}
+}
+
+/*
+ * get the next available buffer from dma queue
+ */
+static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
+						 struct em28xx_dmaqueue *dma_q)
+{
+	struct em28xx_buffer *buf;
+
+	if (list_empty(&dma_q->active)) {
+		em28xx_isocdbg("No active queue to serve\n");
+		return NULL;
+	}
+
+	/* Get the next buffer */
+	buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
+	/* Cleans up buffer - Useful for testing for frame/URB loss */
+	list_del(&buf->list);
+	buf->pos = 0;
+	buf->vb_buf = buf->mem;
+
+	return buf;
+}
+
+/*
+ * Finish the current buffer if completed and prepare for the next field
+ */
+static struct em28xx_buffer *
+finish_field_prepare_next(struct em28xx *dev,
+			  struct em28xx_buffer *buf,
+			  struct em28xx_dmaqueue *dma_q)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	if (v4l2->progressive || v4l2->top_field) { /* Brand new frame */
+		if (buf)
+			finish_buffer(dev, buf);
+		buf = get_next_buf(dev, dma_q);
+	}
+	if (buf) {
+		buf->top_field = v4l2->top_field;
+		buf->pos = 0;
+	}
+
+	return buf;
+}
+
+/*
+ * Process data packet according to the em2710/em2750/em28xx frame data format
+ */
+static inline void process_frame_data_em28xx(struct em28xx *dev,
+					     unsigned char *data_pkt,
+					     unsigned int  data_len)
+{
+	struct em28xx_v4l2      *v4l2 = dev->v4l2;
+	struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
+	struct em28xx_buffer    *vbi_buf = dev->usb_ctl.vbi_buf;
+	struct em28xx_dmaqueue  *dma_q = &dev->vidq;
+	struct em28xx_dmaqueue  *vbi_dma_q = &dev->vbiq;
+
+	/*
+	 * capture type 0 = vbi start
+	 * capture type 1 = vbi in progress
+	 * capture type 2 = video start
+	 * capture type 3 = video in progress
+	 */
+	if (data_len >= 4) {
+		/*
+		 * NOTE: Headers are always 4 bytes and
+		 * never split across packets
+		 */
+		if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
+		    data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
+			/* Continuation */
+			data_pkt += 4;
+			data_len -= 4;
+		} else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
+			/* Field start (VBI mode) */
+			v4l2->capture_type = 0;
+			v4l2->vbi_read = 0;
+			em28xx_isocdbg("VBI START HEADER !!!\n");
+			v4l2->top_field = !(data_pkt[2] & 1);
+			data_pkt += 4;
+			data_len -= 4;
+		} else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
+			/* Field start (VBI disabled) */
+			v4l2->capture_type = 2;
+			em28xx_isocdbg("VIDEO START HEADER !!!\n");
+			v4l2->top_field = !(data_pkt[2] & 1);
+			data_pkt += 4;
+			data_len -= 4;
+		}
+	}
+	/*
+	 * NOTE: With bulk transfers, intermediate data packets
+	 * have no continuation header
+	 */
+
+	if (v4l2->capture_type == 0) {
+		vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
+		dev->usb_ctl.vbi_buf = vbi_buf;
+		v4l2->capture_type = 1;
+	}
+
+	if (v4l2->capture_type == 1) {
+		int vbi_size = v4l2->vbi_width * v4l2->vbi_height;
+		int vbi_data_len = ((v4l2->vbi_read + data_len) > vbi_size) ?
+				   (vbi_size - v4l2->vbi_read) : data_len;
+
+		/* Copy VBI data */
+		if (vbi_buf)
+			em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
+		v4l2->vbi_read += vbi_data_len;
+
+		if (vbi_data_len < data_len) {
+			/* Continue with copying video data */
+			v4l2->capture_type = 2;
+			data_pkt += vbi_data_len;
+			data_len -= vbi_data_len;
+		}
+	}
+
+	if (v4l2->capture_type == 2) {
+		buf = finish_field_prepare_next(dev, buf, dma_q);
+		dev->usb_ctl.vid_buf = buf;
+		v4l2->capture_type = 3;
+	}
+
+	if (v4l2->capture_type == 3 && buf && data_len > 0)
+		em28xx_copy_video(dev, buf, data_pkt, data_len);
+}
+
+/*
+ * Process data packet according to the em25xx/em276x/7x/8x frame data format
+ */
+static inline void process_frame_data_em25xx(struct em28xx *dev,
+					     unsigned char *data_pkt,
+					     unsigned int  data_len)
+{
+	struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
+	struct em28xx_dmaqueue  *dmaq = &dev->vidq;
+	struct em28xx_v4l2      *v4l2 = dev->v4l2;
+	bool frame_end = false;
+
+	/* Check for header */
+	/*
+	 * NOTE: at least with bulk transfers, only the first packet
+	 * has a header and has always set the FRAME_END bit
+	 */
+	if (data_len >= 2) {	/* em25xx header is only 2 bytes long */
+		if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
+		    ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
+			v4l2->top_field = !(data_pkt[1] &
+					   EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
+			frame_end = data_pkt[1] &
+				    EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
+			data_pkt += 2;
+			data_len -= 2;
+		}
+
+		/* Finish field and prepare next (BULK only) */
+		if (dev->analog_xfer_bulk && frame_end) {
+			buf = finish_field_prepare_next(dev, buf, dmaq);
+			dev->usb_ctl.vid_buf = buf;
+		}
+		/*
+		 * NOTE: in ISOC mode when a new frame starts and buf==NULL,
+		 * we COULD already prepare a buffer here to avoid skipping the
+		 * first frame.
+		 */
+	}
+
+	/* Copy data */
+	if (buf && data_len > 0)
+		em28xx_copy_video(dev, buf, data_pkt, data_len);
+
+	/* Finish frame (ISOC only) => avoids lag of 1 frame */
+	if (!dev->analog_xfer_bulk && frame_end) {
+		buf = finish_field_prepare_next(dev, buf, dmaq);
+		dev->usb_ctl.vid_buf = buf;
+	}
+
+	/*
+	 * NOTES:
+	 *
+	 * 1) Tested with USB bulk transfers only !
+	 * The wording in the datasheet suggests that isoc might work different.
+	 * The current code assumes that with isoc transfers each packet has a
+	 * header like with the other em28xx devices.
+	 *
+	 * 2) Support for interlaced mode is pure theory. It has not been
+	 * tested and it is unknown if these devices actually support it.
+	 */
+}
+
+/* Processes and copies the URB data content (video and VBI data) */
+static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
+{
+	int xfer_bulk, num_packets, i;
+	unsigned char *usb_data_pkt;
+	unsigned int usb_data_len;
+
+	if (!dev)
+		return 0;
+
+	if (dev->disconnected)
+		return 0;
+
+	if (urb->status < 0)
+		print_err_status(dev, -1, urb->status);
+
+	xfer_bulk = usb_pipebulk(urb->pipe);
+
+	if (xfer_bulk) /* bulk */
+		num_packets = 1;
+	else /* isoc */
+		num_packets = urb->number_of_packets;
+
+	for (i = 0; i < num_packets; i++) {
+		if (xfer_bulk) { /* bulk */
+			usb_data_len = urb->actual_length;
+
+			usb_data_pkt = urb->transfer_buffer;
+		} else { /* isoc */
+			if (urb->iso_frame_desc[i].status < 0) {
+				print_err_status(dev, i,
+						 urb->iso_frame_desc[i].status);
+				if (urb->iso_frame_desc[i].status != -EPROTO)
+					continue;
+			}
+
+			usb_data_len = urb->iso_frame_desc[i].actual_length;
+			if (usb_data_len > dev->max_pkt_size) {
+				em28xx_isocdbg("packet bigger than packet size");
+				continue;
+			}
+
+			usb_data_pkt = urb->transfer_buffer +
+				       urb->iso_frame_desc[i].offset;
+		}
+
+		if (usb_data_len == 0) {
+			/* NOTE: happens very often with isoc transfers */
+			/* em28xx_usbdbg("packet %d is empty",i); - spammy */
+			continue;
+		}
+
+		if (dev->is_em25xx)
+			process_frame_data_em25xx(dev,
+						  usb_data_pkt, usb_data_len);
+		else
+			process_frame_data_em28xx(dev,
+						  usb_data_pkt, usb_data_len);
+	}
+	return 1;
+}
+
+static int get_resource(enum v4l2_buf_type f_type)
+{
+	switch (f_type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		return EM28XX_RESOURCE_VIDEO;
+	case V4L2_BUF_TYPE_VBI_CAPTURE:
+		return EM28XX_RESOURCE_VBI;
+	default:
+		WARN_ON(1);
+		return -1; /* Indicate that device is busy */
+	}
+}
+
+/* Usage lock check functions */
+static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
+{
+	int res_type = get_resource(f_type);
+
+	/* is it free? */
+	if (dev->resources & res_type) {
+		/* no, someone else uses it */
+		return -EBUSY;
+	}
+
+	/* it's free, grab it */
+	dev->resources |= res_type;
+	em28xx_videodbg("res: get %d\n", res_type);
+	return 0;
+}
+
+static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
+{
+	int res_type = get_resource(f_type);
+
+	dev->resources &= ~res_type;
+	em28xx_videodbg("res: put %d\n", res_type);
+}
+
+static void em28xx_v4l2_media_release(struct em28xx *dev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+	int i;
+
+	for (i = 0; i < MAX_EM28XX_INPUT; i++) {
+		if (!INPUT(i)->type)
+			return;
+		media_device_unregister_entity(&dev->input_ent[i]);
+	}
+#endif
+}
+
+/*
+ * Media Controller helper functions
+ */
+
+static int em28xx_enable_analog_tuner(struct em28xx *dev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+	struct media_device *mdev = dev->media_dev;
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct media_entity *source;
+	struct media_link *link, *found_link = NULL;
+	int ret, active_links = 0;
+
+	if (!mdev || !v4l2->decoder)
+		return 0;
+
+	/*
+	 * This will find the tuner that is connected into the decoder.
+	 * Technically, this is not 100% correct, as the device may be
+	 * using an analog input instead of the tuner. However, as we can't
+	 * do DVB streaming while the DMA engine is being used for V4L2,
+	 * this should be enough for the actual needs.
+	 */
+	list_for_each_entry(link, &v4l2->decoder->links, list) {
+		if (link->sink->entity == v4l2->decoder) {
+			found_link = link;
+			if (link->flags & MEDIA_LNK_FL_ENABLED)
+				active_links++;
+			break;
+		}
+	}
+
+	if (active_links == 1 || !found_link)
+		return 0;
+
+	source = found_link->source->entity;
+	list_for_each_entry(link, &source->links, list) {
+		struct media_entity *sink;
+		int flags = 0;
+
+		sink = link->sink->entity;
+
+		if (sink == v4l2->decoder)
+			flags = MEDIA_LNK_FL_ENABLED;
+
+		ret = media_entity_setup_link(link, flags);
+		if (ret) {
+			dev_err(&dev->intf->dev,
+				"Couldn't change link %s->%s to %s. Error %d\n",
+				source->name, sink->name,
+				flags ? "enabled" : "disabled",
+				ret);
+			return ret;
+		}
+
+		em28xx_videodbg("link %s->%s was %s\n",
+				source->name, sink->name,
+				flags ? "ENABLED" : "disabled");
+	}
+#endif
+	return 0;
+}
+
+static const char * const iname[] = {
+	[EM28XX_VMUX_COMPOSITE]  = "Composite",
+	[EM28XX_VMUX_SVIDEO]     = "S-Video",
+	[EM28XX_VMUX_TELEVISION] = "Television",
+	[EM28XX_RADIO]           = "Radio",
+};
+
+static void em28xx_v4l2_create_entities(struct em28xx *dev)
+{
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	int ret, i;
+
+	/* Initialize Video, VBI and Radio pads */
+	v4l2->video_pad.flags = MEDIA_PAD_FL_SINK;
+	ret = media_entity_pads_init(&v4l2->vdev.entity, 1, &v4l2->video_pad);
+	if (ret < 0)
+		dev_err(&dev->intf->dev,
+			"failed to initialize video media entity!\n");
+
+	if (em28xx_vbi_supported(dev)) {
+		v4l2->vbi_pad.flags = MEDIA_PAD_FL_SINK;
+		ret = media_entity_pads_init(&v4l2->vbi_dev.entity, 1,
+					     &v4l2->vbi_pad);
+		if (ret < 0)
+			dev_err(&dev->intf->dev,
+				"failed to initialize vbi media entity!\n");
+	}
+
+	/* Webcams don't have input connectors */
+	if (dev->is_webcam)
+		return;
+
+	/* Create entities for each input connector */
+	for (i = 0; i < MAX_EM28XX_INPUT; i++) {
+		struct media_entity *ent = &dev->input_ent[i];
+
+		if (!INPUT(i)->type)
+			break;
+
+		ent->name = iname[INPUT(i)->type];
+		ent->flags = MEDIA_ENT_FL_CONNECTOR;
+		dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
+
+		switch (INPUT(i)->type) {
+		case EM28XX_VMUX_COMPOSITE:
+			ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
+			break;
+		case EM28XX_VMUX_SVIDEO:
+			ent->function = MEDIA_ENT_F_CONN_SVIDEO;
+			break;
+		default: /* EM28XX_VMUX_TELEVISION or EM28XX_RADIO */
+			if (dev->tuner_type != TUNER_ABSENT)
+				ent->function = MEDIA_ENT_F_CONN_RF;
+			break;
+		}
+
+		ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
+		if (ret < 0)
+			dev_err(&dev->intf->dev,
+				"failed to initialize input pad[%d]!\n", i);
+
+		ret = media_device_register_entity(dev->media_dev, ent);
+		if (ret < 0)
+			dev_err(&dev->intf->dev,
+				"failed to register input entity %d!\n", i);
+	}
+#endif
+}
+
+/*
+ * Videobuf2 operations
+ */
+
+static int queue_setup(struct vb2_queue *vq,
+		       unsigned int *nbuffers, unsigned int *nplanes,
+		       unsigned int sizes[], struct device *alloc_devs[])
+{
+	struct em28xx *dev = vb2_get_drv_priv(vq);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	unsigned long size =
+		    (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3;
+
+	if (*nplanes)
+		return sizes[0] < size ? -EINVAL : 0;
+	*nplanes = 1;
+	sizes[0] = size;
+
+	em28xx_enable_analog_tuner(dev);
+
+	return 0;
+}
+
+static int
+buffer_prepare(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct em28xx        *dev = vb2_get_drv_priv(vb->vb2_queue);
+	struct em28xx_v4l2   *v4l2 = dev->v4l2;
+	unsigned long size;
+
+	em28xx_videodbg("%s, field=%d\n", __func__, vbuf->field);
+
+	size = (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3;
+
+	if (vb2_plane_size(vb, 0) < size) {
+		em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
+				__func__, vb2_plane_size(vb, 0), size);
+		return -EINVAL;
+	}
+	vb2_set_plane_payload(vb, 0, size);
+
+	return 0;
+}
+
+int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
+{
+	struct em28xx *dev = vb2_get_drv_priv(vq);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct v4l2_frequency f;
+	struct v4l2_fh *owner;
+	int rc = 0;
+
+	em28xx_videodbg("%s\n", __func__);
+
+	dev->v4l2->field_count = 0;
+
+	/*
+	 * Make sure streaming is not already in progress for this type
+	 * of filehandle (e.g. video, vbi)
+	 */
+	rc = res_get(dev, vq->type);
+	if (rc)
+		return rc;
+
+	if (v4l2->streaming_users == 0) {
+		/* First active streaming user, so allocate all the URBs */
+
+		/* Allocate the USB bandwidth */
+		em28xx_set_alternate(dev);
+
+		/*
+		 * Needed, since GPIO might have disabled power of
+		 * some i2c device
+		 */
+		em28xx_wake_i2c(dev);
+
+		v4l2->capture_type = -1;
+		rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
+					  dev->analog_xfer_bulk,
+					  EM28XX_NUM_BUFS,
+					  dev->max_pkt_size,
+					  dev->packet_multiplier,
+					  em28xx_urb_data_copy);
+		if (rc < 0)
+			return rc;
+
+		/*
+		 * djh: it's not clear whether this code is still needed.  I'm
+		 * leaving it in here for now entirely out of concern for
+		 * backward compatibility (the old code did it)
+		 */
+
+		/* Ask tuner to go to analog or radio mode */
+		memset(&f, 0, sizeof(f));
+		f.frequency = v4l2->frequency;
+		owner = (struct v4l2_fh *)vq->owner;
+		if (owner && owner->vdev->vfl_type == VFL_TYPE_RADIO)
+			f.type = V4L2_TUNER_RADIO;
+		else
+			f.type = V4L2_TUNER_ANALOG_TV;
+		v4l2_device_call_all(&v4l2->v4l2_dev,
+				     0, tuner, s_frequency, &f);
+
+		/* Enable video stream at TV decoder */
+		v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 1);
+	}
+
+	v4l2->streaming_users++;
+
+	return rc;
+}
+
+static void em28xx_stop_streaming(struct vb2_queue *vq)
+{
+	struct em28xx *dev = vb2_get_drv_priv(vq);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct em28xx_dmaqueue *vidq = &dev->vidq;
+	unsigned long flags = 0;
+
+	em28xx_videodbg("%s\n", __func__);
+
+	res_free(dev, vq->type);
+
+	if (v4l2->streaming_users-- == 1) {
+		/* Disable video stream at TV decoder */
+		v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0);
+
+		/* Last active user, so shutdown all the URBS */
+		em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
+	}
+
+	spin_lock_irqsave(&dev->slock, flags);
+	if (dev->usb_ctl.vid_buf) {
+		vb2_buffer_done(&dev->usb_ctl.vid_buf->vb.vb2_buf,
+				VB2_BUF_STATE_ERROR);
+		dev->usb_ctl.vid_buf = NULL;
+	}
+	while (!list_empty(&vidq->active)) {
+		struct em28xx_buffer *buf;
+
+		buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
+		list_del(&buf->list);
+		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+	}
+	spin_unlock_irqrestore(&dev->slock, flags);
+}
+
+void em28xx_stop_vbi_streaming(struct vb2_queue *vq)
+{
+	struct em28xx *dev = vb2_get_drv_priv(vq);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct em28xx_dmaqueue *vbiq = &dev->vbiq;
+	unsigned long flags = 0;
+
+	em28xx_videodbg("%s\n", __func__);
+
+	res_free(dev, vq->type);
+
+	if (v4l2->streaming_users-- == 1) {
+		/* Disable video stream at TV decoder */
+		v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0);
+
+		/* Last active user, so shutdown all the URBS */
+		em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
+	}
+
+	spin_lock_irqsave(&dev->slock, flags);
+	if (dev->usb_ctl.vbi_buf) {
+		vb2_buffer_done(&dev->usb_ctl.vbi_buf->vb.vb2_buf,
+				VB2_BUF_STATE_ERROR);
+		dev->usb_ctl.vbi_buf = NULL;
+	}
+	while (!list_empty(&vbiq->active)) {
+		struct em28xx_buffer *buf;
+
+		buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
+		list_del(&buf->list);
+		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+	}
+	spin_unlock_irqrestore(&dev->slock, flags);
+}
+
+static void
+buffer_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
+	struct em28xx_buffer *buf =
+		container_of(vbuf, struct em28xx_buffer, vb);
+	struct em28xx_dmaqueue *vidq = &dev->vidq;
+	unsigned long flags = 0;
+
+	em28xx_videodbg("%s\n", __func__);
+	buf->mem = vb2_plane_vaddr(vb, 0);
+	buf->length = vb2_plane_size(vb, 0);
+
+	spin_lock_irqsave(&dev->slock, flags);
+	list_add_tail(&buf->list, &vidq->active);
+	spin_unlock_irqrestore(&dev->slock, flags);
+}
+
+static const struct vb2_ops em28xx_video_qops = {
+	.queue_setup    = queue_setup,
+	.buf_prepare    = buffer_prepare,
+	.buf_queue      = buffer_queue,
+	.start_streaming = em28xx_start_analog_streaming,
+	.stop_streaming = em28xx_stop_streaming,
+	.wait_prepare   = vb2_ops_wait_prepare,
+	.wait_finish    = vb2_ops_wait_finish,
+};
+
+static int em28xx_vb2_setup(struct em28xx *dev)
+{
+	int rc;
+	struct vb2_queue *q;
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	/* Setup Videobuf2 for Video capture */
+	q = &v4l2->vb_vidq;
+	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->drv_priv = dev;
+	q->buf_struct_size = sizeof(struct em28xx_buffer);
+	q->ops = &em28xx_video_qops;
+	q->mem_ops = &vb2_vmalloc_memops;
+
+	rc = vb2_queue_init(q);
+	if (rc < 0)
+		return rc;
+
+	/* Setup Videobuf2 for VBI capture */
+	q = &v4l2->vb_vbiq;
+	q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
+	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->drv_priv = dev;
+	q->buf_struct_size = sizeof(struct em28xx_buffer);
+	q->ops = &em28xx_vbi_qops;
+	q->mem_ops = &vb2_vmalloc_memops;
+
+	rc = vb2_queue_init(q);
+	if (rc < 0)
+		return rc;
+
+	return 0;
+}
+
+/*
+ * v4l2 interface
+ */
+
+static void video_mux(struct em28xx *dev, int index)
+{
+	struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev;
+
+	dev->ctl_input = index;
+	dev->ctl_ainput = INPUT(index)->amux;
+	dev->ctl_aoutput = INPUT(index)->aout;
+
+	if (!dev->ctl_aoutput)
+		dev->ctl_aoutput = EM28XX_AOUT_MASTER;
+
+	v4l2_device_call_all(v4l2_dev, 0, video, s_routing,
+			     INPUT(index)->vmux, 0, 0);
+
+	if (dev->has_msp34xx) {
+		if (dev->i2s_speed) {
+			v4l2_device_call_all(v4l2_dev, 0, audio,
+					     s_i2s_clock_freq, dev->i2s_speed);
+		}
+		/* Note: this is msp3400 specific */
+		v4l2_device_call_all(v4l2_dev, 0, audio, s_routing,
+				     dev->ctl_ainput,
+				     MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
+	}
+
+	if (dev->board.adecoder != EM28XX_NOADECODER) {
+		v4l2_device_call_all(v4l2_dev, 0, audio, s_routing,
+				     dev->ctl_ainput, dev->ctl_aoutput, 0);
+	}
+
+	em28xx_audio_analog_set(dev);
+}
+
+static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
+{
+	struct em28xx *dev = priv;
+
+	/*
+	 * In the case of non-AC97 volume controls, we still need
+	 * to do some setups at em28xx, in order to mute/unmute
+	 * and to adjust audio volume. However, the value ranges
+	 * should be checked by the corresponding V4L subdriver.
+	 */
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		dev->mute = ctrl->val;
+		em28xx_audio_analog_set(dev);
+		break;
+	case V4L2_CID_AUDIO_VOLUME:
+		dev->volume = ctrl->val;
+		em28xx_audio_analog_set(dev);
+		break;
+	}
+}
+
+static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct em28xx_v4l2 *v4l2 =
+		  container_of(ctrl->handler, struct em28xx_v4l2, ctrl_handler);
+	struct em28xx *dev = v4l2->dev;
+	int ret = -EINVAL;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		dev->mute = ctrl->val;
+		ret = em28xx_audio_analog_set(dev);
+		break;
+	case V4L2_CID_AUDIO_VOLUME:
+		dev->volume = ctrl->val;
+		ret = em28xx_audio_analog_set(dev);
+		break;
+	case V4L2_CID_CONTRAST:
+		ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
+		break;
+	case V4L2_CID_BRIGHTNESS:
+		ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
+		break;
+	case V4L2_CID_SATURATION:
+		ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
+		break;
+	case V4L2_CID_BLUE_BALANCE:
+		ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
+		break;
+	case V4L2_CID_RED_BALANCE:
+		ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
+		break;
+	case V4L2_CID_SHARPNESS:
+		ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
+		break;
+	}
+
+	return (ret < 0) ? ret : 0;
+}
+
+static const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
+	.s_ctrl = em28xx_s_ctrl,
+};
+
+static void size_to_scale(struct em28xx *dev,
+			  unsigned int width, unsigned int height,
+			unsigned int *hscale, unsigned int *vscale)
+{
+	unsigned int          maxw = norm_maxw(dev);
+	unsigned int          maxh = norm_maxh(dev);
+
+	*hscale = (((unsigned long)maxw) << 12) / width - 4096L;
+	if (*hscale > EM28XX_HVSCALE_MAX)
+		*hscale = EM28XX_HVSCALE_MAX;
+
+	*vscale = (((unsigned long)maxh) << 12) / height - 4096L;
+	if (*vscale > EM28XX_HVSCALE_MAX)
+		*vscale = EM28XX_HVSCALE_MAX;
+}
+
+static void scale_to_size(struct em28xx *dev,
+			  unsigned int hscale, unsigned int vscale,
+			  unsigned int *width, unsigned int *height)
+{
+	unsigned int          maxw = norm_maxw(dev);
+	unsigned int          maxh = norm_maxh(dev);
+
+	*width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+	*height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
+
+	/* Don't let width or height to be zero */
+	if (*width < 1)
+		*width = 1;
+	if (*height < 1)
+		*height = 1;
+}
+
+/*
+ * IOCTL vidioc handling
+ */
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct em28xx         *dev = video_drvdata(file);
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+
+	f->fmt.pix.width = v4l2->width;
+	f->fmt.pix.height = v4l2->height;
+	f->fmt.pix.pixelformat = v4l2->format->fourcc;
+	f->fmt.pix.bytesperline = (v4l2->width * v4l2->format->depth + 7) >> 3;
+	f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * v4l2->height;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+	/* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+	if (v4l2->progressive)
+		f->fmt.pix.field = V4L2_FIELD_NONE;
+	else
+		f->fmt.pix.field = v4l2->interlaced_fieldmode ?
+			   V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
+	return 0;
+}
+
+static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(format); i++)
+		if (format[i].fourcc == fourcc)
+			return &format[i];
+
+	return NULL;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+				  struct v4l2_format *f)
+{
+	struct em28xx         *dev   = video_drvdata(file);
+	struct em28xx_v4l2    *v4l2  = dev->v4l2;
+	unsigned int          width  = f->fmt.pix.width;
+	unsigned int          height = f->fmt.pix.height;
+	unsigned int          maxw   = norm_maxw(dev);
+	unsigned int          maxh   = norm_maxh(dev);
+	unsigned int          hscale, vscale;
+	struct em28xx_fmt     *fmt;
+
+	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+	if (!fmt) {
+		fmt = &format[0];
+		em28xx_videodbg("Fourcc format (%08x) invalid. Using default (%08x).\n",
+				f->fmt.pix.pixelformat, fmt->fourcc);
+	}
+
+	if (dev->board.is_em2800) {
+		/* the em2800 can only scale down to 50% */
+		height = height > (3 * maxh / 4) ? maxh : maxh / 2;
+		width = width > (3 * maxw / 4) ? maxw : maxw / 2;
+		/*
+		 * MaxPacketSize for em2800 is too small to capture at full
+		 * resolution use half of maxw as the scaler can only scale
+		 * to 50%
+		 */
+		if (width == maxw && height == maxh)
+			width /= 2;
+	} else {
+		/*
+		 * width must even because of the YUYV format
+		 * height must be even because of interlacing
+		 */
+		v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
+				      1, 0);
+	}
+	/* Avoid division by zero at size_to_scale */
+	if (width < 1)
+		width = 1;
+	if (height < 1)
+		height = 1;
+
+	size_to_scale(dev, width, height, &hscale, &vscale);
+	scale_to_size(dev, hscale, vscale, &width, &height);
+
+	f->fmt.pix.width = width;
+	f->fmt.pix.height = height;
+	f->fmt.pix.pixelformat = fmt->fourcc;
+	f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
+	f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	if (v4l2->progressive)
+		f->fmt.pix.field = V4L2_FIELD_NONE;
+	else
+		f->fmt.pix.field = v4l2->interlaced_fieldmode ?
+			   V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
+
+	return 0;
+}
+
+static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
+				   unsigned int width, unsigned int height)
+{
+	struct em28xx_fmt     *fmt;
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+
+	fmt = format_by_fourcc(fourcc);
+	if (!fmt)
+		return -EINVAL;
+
+	v4l2->format = fmt;
+	v4l2->width  = width;
+	v4l2->height = height;
+
+	/* set new image size */
+	size_to_scale(dev, v4l2->width, v4l2->height,
+		      &v4l2->hscale, &v4l2->vscale);
+
+	em28xx_resolution_set(dev);
+
+	return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct em28xx *dev = video_drvdata(file);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	if (vb2_is_busy(&v4l2->vb_vidq))
+		return -EBUSY;
+
+	vidioc_try_fmt_vid_cap(file, priv, f);
+
+	return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
+				f->fmt.pix.width, f->fmt.pix.height);
+}
+
+static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	*norm = dev->v4l2->norm;
+
+	return 0;
+}
+
+static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, video, querystd, norm);
+
+	return 0;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
+{
+	struct em28xx      *dev  = video_drvdata(file);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	struct v4l2_format f;
+
+	if (norm == v4l2->norm)
+		return 0;
+
+	if (v4l2->streaming_users > 0)
+		return -EBUSY;
+
+	v4l2->norm = norm;
+
+	/* Adjusts width/height, if needed */
+	f.fmt.pix.width = 720;
+	f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576;
+	vidioc_try_fmt_vid_cap(file, priv, &f);
+
+	/* set new image size */
+	v4l2->width = f.fmt.pix.width;
+	v4l2->height = f.fmt.pix.height;
+	size_to_scale(dev, v4l2->width, v4l2->height,
+		      &v4l2->hscale, &v4l2->vscale);
+
+	em28xx_resolution_set(dev);
+	v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm);
+
+	return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+			 struct v4l2_streamparm *p)
+{
+	struct v4l2_subdev_frame_interval ival = { 0 };
+	struct em28xx      *dev  = video_drvdata(file);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	int rc = 0;
+
+	if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+	    p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		return -EINVAL;
+
+	p->parm.capture.readbuffers = EM28XX_MIN_BUF;
+	p->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+	if (dev->is_webcam) {
+		rc = v4l2_device_call_until_err(&v4l2->v4l2_dev, 0,
+						video, g_frame_interval, &ival);
+		if (!rc)
+			p->parm.capture.timeperframe = ival.interval;
+	} else {
+		v4l2_video_std_frame_period(v4l2->norm,
+					    &p->parm.capture.timeperframe);
+	}
+
+	return rc;
+}
+
+static int vidioc_s_parm(struct file *file, void *priv,
+			 struct v4l2_streamparm *p)
+{
+	struct em28xx *dev = video_drvdata(file);
+	struct v4l2_subdev_frame_interval ival = {
+		0,
+		p->parm.capture.timeperframe
+	};
+	int rc = 0;
+
+	if (!dev->is_webcam)
+		return -ENOTTY;
+
+	if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+	    p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		return -EINVAL;
+
+	memset(&p->parm, 0, sizeof(p->parm));
+	p->parm.capture.readbuffers = EM28XX_MIN_BUF;
+	p->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+	rc = v4l2_device_call_until_err(&dev->v4l2->v4l2_dev, 0,
+					video, s_frame_interval, &ival);
+	if (!rc)
+		p->parm.capture.timeperframe = ival.interval;
+	return rc;
+}
+
+static int vidioc_enum_input(struct file *file, void *priv,
+			     struct v4l2_input *i)
+{
+	struct em28xx *dev = video_drvdata(file);
+	unsigned int       n;
+	int j;
+
+	n = i->index;
+	if (n >= MAX_EM28XX_INPUT)
+		return -EINVAL;
+	if (!INPUT(n)->type)
+		return -EINVAL;
+
+	i->type = V4L2_INPUT_TYPE_CAMERA;
+
+	strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));
+
+	if (INPUT(n)->type == EM28XX_VMUX_TELEVISION)
+		i->type = V4L2_INPUT_TYPE_TUNER;
+
+	i->std = dev->v4l2->vdev.tvnorms;
+	/* webcams do not have the STD API */
+	if (dev->is_webcam)
+		i->capabilities = 0;
+
+	/* Dynamically generates an audioset bitmask */
+	i->audioset = 0;
+	for (j = 0; j < MAX_EM28XX_INPUT; j++)
+		if (dev->amux_map[j] != EM28XX_AMUX_UNUSED)
+			i->audioset |= 1 << j;
+
+	return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	*i = dev->ctl_input;
+
+	return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (i >= MAX_EM28XX_INPUT)
+		return -EINVAL;
+	if (!INPUT(i)->type)
+		return -EINVAL;
+
+	video_mux(dev, i);
+	return 0;
+}
+
+static int em28xx_fill_audio_input(struct em28xx *dev,
+				   const char *s,
+				   struct v4l2_audio *a,
+				   unsigned int index)
+{
+	unsigned int idx = dev->amux_map[index];
+
+	/*
+	 * With msp3400, almost all mappings use the default (amux = 0).
+	 * The only one may use a different value is WinTV USB2, where it
+	 * can also be SCART1 input.
+	 * As it is very doubtful that we would see new boards with msp3400,
+	 * let's just reuse the existing switch.
+	 */
+	if (dev->has_msp34xx && idx != EM28XX_AMUX_UNUSED)
+		idx = EM28XX_AMUX_LINE_IN;
+
+	switch (idx) {
+	case EM28XX_AMUX_VIDEO:
+		strscpy(a->name, "Television", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_LINE_IN:
+		strscpy(a->name, "Line In", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_VIDEO2:
+		strscpy(a->name, "Television alt", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_PHONE:
+		strscpy(a->name, "Phone", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_MIC:
+		strscpy(a->name, "Mic", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_CD:
+		strscpy(a->name, "CD", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_AUX:
+		strscpy(a->name, "Aux", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_PCM_OUT:
+		strscpy(a->name, "PCM", sizeof(a->name));
+		break;
+	case EM28XX_AMUX_UNUSED:
+	default:
+		return -EINVAL;
+	}
+	a->index = index;
+	a->capability = V4L2_AUDCAP_STEREO;
+
+	em28xx_videodbg("%s: audio input index %d is '%s'\n",
+			s, a->index, a->name);
+
+	return 0;
+}
+
+static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (a->index >= MAX_EM28XX_INPUT)
+		return -EINVAL;
+
+	return em28xx_fill_audio_input(dev, __func__, a, a->index);
+}
+
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+	struct em28xx *dev = video_drvdata(file);
+	int i;
+
+	for (i = 0; i < MAX_EM28XX_INPUT; i++)
+		if (dev->ctl_ainput == dev->amux_map[i])
+			return em28xx_fill_audio_input(dev, __func__, a, i);
+
+	/* Should never happen! */
+	return -EINVAL;
+}
+
+static int vidioc_s_audio(struct file *file, void *priv,
+			  const struct v4l2_audio *a)
+{
+	struct em28xx *dev = video_drvdata(file);
+	int idx, i;
+
+	if (a->index >= MAX_EM28XX_INPUT)
+		return -EINVAL;
+
+	idx = dev->amux_map[a->index];
+
+	if (idx == EM28XX_AMUX_UNUSED)
+		return -EINVAL;
+
+	dev->ctl_ainput = idx;
+
+	/*
+	 * FIXME: This is wrong, as different inputs at em28xx_cards
+	 * may have different audio outputs. So, the right thing
+	 * to do is to implement VIDIOC_G_AUDOUT/VIDIOC_S_AUDOUT.
+	 * With the current board definitions, this would work fine,
+	 * as, currently, all boards fit.
+	 */
+	for (i = 0; i < MAX_EM28XX_INPUT; i++)
+		if (idx == dev->amux_map[i])
+			break;
+	if (i == MAX_EM28XX_INPUT)
+		return -EINVAL;
+
+	dev->ctl_aoutput = INPUT(i)->aout;
+
+	if (!dev->ctl_aoutput)
+		dev->ctl_aoutput = EM28XX_AOUT_MASTER;
+
+	em28xx_videodbg("%s: set audio input to %d\n", __func__,
+			dev->ctl_ainput);
+
+	return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+			  struct v4l2_tuner *t)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (t->index != 0)
+		return -EINVAL;
+
+	strscpy(t->name, "Tuner", sizeof(t->name));
+
+	v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t);
+	return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+			  const struct v4l2_tuner *t)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (t->index != 0)
+		return -EINVAL;
+
+	v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t);
+	return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+			      struct v4l2_frequency *f)
+{
+	struct em28xx         *dev = video_drvdata(file);
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+
+	if (f->tuner != 0)
+		return -EINVAL;
+
+	f->frequency = v4l2->frequency;
+	return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+			      const struct v4l2_frequency *f)
+{
+	struct v4l2_frequency  new_freq = *f;
+	struct em28xx             *dev  = video_drvdata(file);
+	struct em28xx_v4l2        *v4l2 = dev->v4l2;
+
+	if (f->tuner != 0)
+		return -EINVAL;
+
+	v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_frequency, f);
+	v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, g_frequency, &new_freq);
+	v4l2->frequency = new_freq.frequency;
+
+	return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int vidioc_g_chip_info(struct file *file, void *priv,
+			      struct v4l2_dbg_chip_info *chip)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (chip->match.addr > 1)
+		return -EINVAL;
+	if (chip->match.addr == 1)
+		strscpy(chip->name, "ac97", sizeof(chip->name));
+	else
+		strscpy(chip->name,
+			dev->v4l2->v4l2_dev.name, sizeof(chip->name));
+	return 0;
+}
+
+static int em28xx_reg_len(int reg)
+{
+	switch (reg) {
+	case EM28XX_R40_AC97LSB:
+	case EM28XX_R30_HSCALELOW:
+	case EM28XX_R32_VSCALELOW:
+		return 2;
+	default:
+		return 1;
+	}
+}
+
+static int vidioc_g_register(struct file *file, void *priv,
+			     struct v4l2_dbg_register *reg)
+{
+	struct em28xx *dev = video_drvdata(file);
+	int ret;
+
+	if (reg->match.addr > 1)
+		return -EINVAL;
+	if (reg->match.addr) {
+		ret = em28xx_read_ac97(dev, reg->reg);
+		if (ret < 0)
+			return ret;
+
+		reg->val = ret;
+		reg->size = 1;
+		return 0;
+	}
+
+	/* Match host */
+	reg->size = em28xx_reg_len(reg->reg);
+	if (reg->size == 1) {
+		ret = em28xx_read_reg(dev, reg->reg);
+
+		if (ret < 0)
+			return ret;
+
+		reg->val = ret;
+	} else {
+		__le16 val = 0;
+
+		ret = dev->em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
+						   reg->reg, (char *)&val, 2);
+		if (ret < 0)
+			return ret;
+
+		reg->val = le16_to_cpu(val);
+	}
+
+	return 0;
+}
+
+static int vidioc_s_register(struct file *file, void *priv,
+			     const struct v4l2_dbg_register *reg)
+{
+	struct em28xx *dev = video_drvdata(file);
+	__le16 buf;
+
+	if (reg->match.addr > 1)
+		return -EINVAL;
+	if (reg->match.addr)
+		return em28xx_write_ac97(dev, reg->reg, reg->val);
+
+	/* Match host */
+	buf = cpu_to_le16(reg->val);
+
+	return em28xx_write_regs(dev, reg->reg, (char *)&buf,
+			       em28xx_reg_len(reg->reg));
+}
+#endif
+
+static int vidioc_querycap(struct file *file, void  *priv,
+			   struct v4l2_capability *cap)
+{
+	struct em28xx         *dev  = video_drvdata(file);
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+
+	strscpy(cap->driver, "em28xx", sizeof(cap->driver));
+	strscpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
+	usb_make_path(udev, cap->bus_info, sizeof(cap->bus_info));
+
+	cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_READWRITE |
+			    V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+	if (dev->int_audio_type != EM28XX_INT_AUDIO_NONE)
+		cap->capabilities |= V4L2_CAP_AUDIO;
+	if (dev->tuner_type != TUNER_ABSENT)
+		cap->capabilities |= V4L2_CAP_TUNER;
+	if (video_is_registered(&v4l2->vbi_dev))
+		cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
+	if (video_is_registered(&v4l2->radio_dev))
+		cap->capabilities |= V4L2_CAP_RADIO;
+	return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
+				   struct v4l2_fmtdesc *f)
+{
+	if (unlikely(f->index >= ARRAY_SIZE(format)))
+		return -EINVAL;
+
+	f->pixelformat = format[f->index].fourcc;
+
+	return 0;
+}
+
+static int vidioc_enum_framesizes(struct file *file, void *priv,
+				  struct v4l2_frmsizeenum *fsize)
+{
+	struct em28xx         *dev = video_drvdata(file);
+	struct em28xx_fmt     *fmt;
+	unsigned int	      maxw = norm_maxw(dev);
+	unsigned int	      maxh = norm_maxh(dev);
+
+	fmt = format_by_fourcc(fsize->pixel_format);
+	if (!fmt) {
+		em28xx_videodbg("Fourcc format (%08x) invalid.\n",
+				fsize->pixel_format);
+		return -EINVAL;
+	}
+
+	if (dev->board.is_em2800) {
+		if (fsize->index > 1)
+			return -EINVAL;
+		fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+		fsize->discrete.width = maxw / (1 + fsize->index);
+		fsize->discrete.height = maxh / (1 + fsize->index);
+		return 0;
+	}
+
+	if (fsize->index != 0)
+		return -EINVAL;
+
+	/* Report a continuous range */
+	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+	scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
+		      &fsize->stepwise.min_width, &fsize->stepwise.min_height);
+	if (fsize->stepwise.min_width < 48)
+		fsize->stepwise.min_width = 48;
+	if (fsize->stepwise.min_height < 38)
+		fsize->stepwise.min_height = 38;
+	fsize->stepwise.max_width = maxw;
+	fsize->stepwise.max_height = maxh;
+	fsize->stepwise.step_width = 1;
+	fsize->stepwise.step_height = 1;
+	return 0;
+}
+
+/* RAW VBI ioctls */
+
+static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
+				struct v4l2_format *format)
+{
+	struct em28xx         *dev  = video_drvdata(file);
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+
+	format->fmt.vbi.samples_per_line = v4l2->vbi_width;
+	format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
+	format->fmt.vbi.offset = 0;
+	format->fmt.vbi.flags = 0;
+	format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
+	format->fmt.vbi.count[0] = v4l2->vbi_height;
+	format->fmt.vbi.count[1] = v4l2->vbi_height;
+	memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
+
+	/* Varies by video standard (NTSC, PAL, etc.) */
+	if (v4l2->norm & V4L2_STD_525_60) {
+		/* NTSC */
+		format->fmt.vbi.start[0] = 10;
+		format->fmt.vbi.start[1] = 273;
+	} else if (v4l2->norm & V4L2_STD_625_50) {
+		/* PAL */
+		format->fmt.vbi.start[0] = 6;
+		format->fmt.vbi.start[1] = 318;
+	}
+
+	return 0;
+}
+
+/*
+ * RADIO ESPECIFIC IOCTLS
+ */
+
+static int radio_g_tuner(struct file *file, void *priv,
+			 struct v4l2_tuner *t)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (unlikely(t->index > 0))
+		return -EINVAL;
+
+	strscpy(t->name, "Radio", sizeof(t->name));
+
+	v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t);
+
+	return 0;
+}
+
+static int radio_s_tuner(struct file *file, void *priv,
+			 const struct v4l2_tuner *t)
+{
+	struct em28xx *dev = video_drvdata(file);
+
+	if (t->index != 0)
+		return -EINVAL;
+
+	v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t);
+
+	return 0;
+}
+
+/*
+ * em28xx_free_v4l2() - Free struct em28xx_v4l2
+ *
+ * @ref: struct kref for struct em28xx_v4l2
+ *
+ * Called when all users of struct em28xx_v4l2 are gone
+ */
+static void em28xx_free_v4l2(struct kref *ref)
+{
+	struct em28xx_v4l2 *v4l2 = container_of(ref, struct em28xx_v4l2, ref);
+
+	v4l2->dev->v4l2 = NULL;
+	kfree(v4l2);
+}
+
+/*
+ * em28xx_v4l2_open()
+ * inits the device and starts isoc transfer
+ */
+static int em28xx_v4l2_open(struct file *filp)
+{
+	struct video_device *vdev = video_devdata(filp);
+	struct em28xx *dev = video_drvdata(filp);
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+	enum v4l2_buf_type fh_type = 0;
+	int ret;
+
+	switch (vdev->vfl_type) {
+	case VFL_TYPE_VIDEO:
+		fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		break;
+	case VFL_TYPE_VBI:
+		fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
+		break;
+	case VFL_TYPE_RADIO:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	em28xx_videodbg("open dev=%s type=%s users=%d\n",
+			video_device_node_name(vdev), v4l2_type_names[fh_type],
+			v4l2->users);
+
+	if (mutex_lock_interruptible(&dev->lock))
+		return -ERESTARTSYS;
+
+	ret = v4l2_fh_open(filp);
+	if (ret) {
+		dev_err(&dev->intf->dev,
+			"%s: v4l2_fh_open() returned error %d\n",
+		       __func__, ret);
+		mutex_unlock(&dev->lock);
+		return ret;
+	}
+
+	if (v4l2->users == 0) {
+		em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+
+		if (vdev->vfl_type != VFL_TYPE_RADIO)
+			em28xx_resolution_set(dev);
+
+		/*
+		 * Needed, since GPIO might have disabled power
+		 * of some i2c devices
+		 */
+		em28xx_wake_i2c(dev);
+	}
+
+	if (vdev->vfl_type == VFL_TYPE_RADIO) {
+		em28xx_videodbg("video_open: setting radio device\n");
+		v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_radio);
+	}
+
+	kref_get(&dev->ref);
+	kref_get(&v4l2->ref);
+	v4l2->users++;
+
+	mutex_unlock(&dev->lock);
+
+	return 0;
+}
+
+/*
+ * em28xx_v4l2_fini()
+ * unregisters the v4l2,i2c and usb devices
+ * called when the device gets disconnected or at module unload
+ */
+static int em28xx_v4l2_fini(struct em28xx *dev)
+{
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	if (!dev->has_video) {
+		/* This device does not support the v4l2 extension */
+		return 0;
+	}
+
+	if (!v4l2)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Closing video extension\n");
+
+	mutex_lock(&dev->lock);
+
+	v4l2_device_disconnect(&v4l2->v4l2_dev);
+
+	em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
+
+	em28xx_v4l2_media_release(dev);
+
+	if (video_is_registered(&v4l2->radio_dev)) {
+		dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->radio_dev));
+		video_unregister_device(&v4l2->radio_dev);
+	}
+	if (video_is_registered(&v4l2->vbi_dev)) {
+		dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->vbi_dev));
+		video_unregister_device(&v4l2->vbi_dev);
+	}
+	if (video_is_registered(&v4l2->vdev)) {
+		dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->vdev));
+		video_unregister_device(&v4l2->vdev);
+	}
+
+	v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
+	v4l2_device_unregister(&v4l2->v4l2_dev);
+
+	kref_put(&v4l2->ref, em28xx_free_v4l2);
+
+	mutex_unlock(&dev->lock);
+
+	kref_put(&dev->ref, em28xx_free_device);
+
+	return 0;
+}
+
+static int em28xx_v4l2_suspend(struct em28xx *dev)
+{
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->has_video)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Suspending video extension\n");
+	em28xx_stop_urbs(dev);
+	return 0;
+}
+
+static int em28xx_v4l2_resume(struct em28xx *dev)
+{
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->has_video)
+		return 0;
+
+	dev_info(&dev->intf->dev, "Resuming video extension\n");
+	/* what do we do here */
+	return 0;
+}
+
+/*
+ * em28xx_v4l2_close()
+ * stops streaming and deallocates all resources allocated by the v4l2
+ * calls and ioctls
+ */
+static int em28xx_v4l2_close(struct file *filp)
+{
+	struct em28xx         *dev  = video_drvdata(filp);
+	struct em28xx_v4l2    *v4l2 = dev->v4l2;
+	struct usb_device *udev = interface_to_usbdev(dev->intf);
+	int              err;
+
+	em28xx_videodbg("users=%d\n", v4l2->users);
+
+	vb2_fop_release(filp);
+	mutex_lock(&dev->lock);
+
+	if (v4l2->users == 1) {
+		/* No sense to try to write to the device */
+		if (dev->disconnected)
+			goto exit;
+
+		/* Save some power by putting tuner to sleep */
+		v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, standby);
+
+		/* do this before setting alternate! */
+		em28xx_set_mode(dev, EM28XX_SUSPEND);
+
+		/* set alternate 0 */
+		dev->alt = 0;
+		em28xx_videodbg("setting alternate 0\n");
+		err = usb_set_interface(udev, 0, 0);
+		if (err < 0) {
+			dev_err(&dev->intf->dev,
+				"cannot change alternate number to 0 (error=%i)\n",
+				err);
+		}
+	}
+
+exit:
+	v4l2->users--;
+	kref_put(&v4l2->ref, em28xx_free_v4l2);
+	mutex_unlock(&dev->lock);
+	kref_put(&dev->ref, em28xx_free_device);
+
+	return 0;
+}
+
+static const struct v4l2_file_operations em28xx_v4l_fops = {
+	.owner         = THIS_MODULE,
+	.open          = em28xx_v4l2_open,
+	.release       = em28xx_v4l2_close,
+	.read          = vb2_fop_read,
+	.poll          = vb2_fop_poll,
+	.mmap          = vb2_fop_mmap,
+	.unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+	.vidioc_querycap            = vidioc_querycap,
+	.vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
+	.vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
+	.vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
+	.vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
+	.vidioc_enum_framesizes     = vidioc_enum_framesizes,
+	.vidioc_enumaudio           = vidioc_enumaudio,
+	.vidioc_g_audio             = vidioc_g_audio,
+	.vidioc_s_audio             = vidioc_s_audio,
+
+	.vidioc_reqbufs             = vb2_ioctl_reqbufs,
+	.vidioc_create_bufs         = vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
+	.vidioc_querybuf            = vb2_ioctl_querybuf,
+	.vidioc_qbuf                = vb2_ioctl_qbuf,
+	.vidioc_dqbuf               = vb2_ioctl_dqbuf,
+
+	.vidioc_g_std               = vidioc_g_std,
+	.vidioc_querystd            = vidioc_querystd,
+	.vidioc_s_std               = vidioc_s_std,
+	.vidioc_g_parm		    = vidioc_g_parm,
+	.vidioc_s_parm		    = vidioc_s_parm,
+	.vidioc_enum_input          = vidioc_enum_input,
+	.vidioc_g_input             = vidioc_g_input,
+	.vidioc_s_input             = vidioc_s_input,
+	.vidioc_streamon            = vb2_ioctl_streamon,
+	.vidioc_streamoff           = vb2_ioctl_streamoff,
+	.vidioc_g_tuner             = vidioc_g_tuner,
+	.vidioc_s_tuner             = vidioc_s_tuner,
+	.vidioc_g_frequency         = vidioc_g_frequency,
+	.vidioc_s_frequency         = vidioc_s_frequency,
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.vidioc_g_chip_info         = vidioc_g_chip_info,
+	.vidioc_g_register          = vidioc_g_register,
+	.vidioc_s_register          = vidioc_s_register,
+#endif
+};
+
+static const struct video_device em28xx_video_template = {
+	.fops		= &em28xx_v4l_fops,
+	.ioctl_ops	= &video_ioctl_ops,
+	.release	= video_device_release_empty,
+	.tvnorms	= V4L2_STD_ALL,
+};
+
+static const struct v4l2_file_operations radio_fops = {
+	.owner         = THIS_MODULE,
+	.open          = em28xx_v4l2_open,
+	.release       = em28xx_v4l2_close,
+	.unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops radio_ioctl_ops = {
+	.vidioc_querycap      = vidioc_querycap,
+	.vidioc_g_tuner       = radio_g_tuner,
+	.vidioc_s_tuner       = radio_s_tuner,
+	.vidioc_g_frequency   = vidioc_g_frequency,
+	.vidioc_s_frequency   = vidioc_s_frequency,
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.vidioc_g_chip_info   = vidioc_g_chip_info,
+	.vidioc_g_register    = vidioc_g_register,
+	.vidioc_s_register    = vidioc_s_register,
+#endif
+};
+
+static struct video_device em28xx_radio_template = {
+	.fops		= &radio_fops,
+	.ioctl_ops	= &radio_ioctl_ops,
+	.release	= video_device_release_empty,
+};
+
+/* I2C possible address to saa7115, tvp5150, msp3400, tvaudio */
+static unsigned short saa711x_addrs[] = {
+	0x4a >> 1, 0x48 >> 1,   /* SAA7111, SAA7111A and SAA7113 */
+	0x42 >> 1, 0x40 >> 1,   /* SAA7114, SAA7115 and SAA7118 */
+	I2C_CLIENT_END };
+
+static unsigned short tvp5150_addrs[] = {
+	0xb8 >> 1,
+	0xba >> 1,
+	I2C_CLIENT_END
+};
+
+static unsigned short msp3400_addrs[] = {
+	0x80 >> 1,
+	0x88 >> 1,
+	I2C_CLIENT_END
+};
+
+/******************************** usb interface ******************************/
+
+static void em28xx_vdev_init(struct em28xx *dev,
+			     struct video_device *vfd,
+			     const struct video_device *template,
+			     const char *type_name)
+{
+	*vfd		= *template;
+	vfd->v4l2_dev	= &dev->v4l2->v4l2_dev;
+	vfd->lock	= &dev->lock;
+	if (dev->is_webcam)
+		vfd->tvnorms = 0;
+
+	snprintf(vfd->name, sizeof(vfd->name), "%s %s",
+		 dev_name(&dev->intf->dev), type_name);
+
+	video_set_drvdata(vfd, dev);
+}
+
+static void em28xx_tuner_setup(struct em28xx *dev, unsigned short tuner_addr)
+{
+	struct em28xx_v4l2      *v4l2 = dev->v4l2;
+	struct v4l2_device      *v4l2_dev = &v4l2->v4l2_dev;
+	struct tuner_setup      tun_setup;
+	struct v4l2_frequency   f;
+
+	memset(&tun_setup, 0, sizeof(tun_setup));
+
+	tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
+	tun_setup.tuner_callback = em28xx_tuner_callback;
+
+	if (dev->board.radio.type) {
+		tun_setup.type = dev->board.radio.type;
+		tun_setup.addr = dev->board.radio_addr;
+
+		v4l2_device_call_all(v4l2_dev,
+				     0, tuner, s_type_addr, &tun_setup);
+	}
+
+	if (dev->tuner_type != TUNER_ABSENT && dev->tuner_type) {
+		tun_setup.type   = dev->tuner_type;
+		tun_setup.addr   = tuner_addr;
+
+		v4l2_device_call_all(v4l2_dev,
+				     0, tuner, s_type_addr, &tun_setup);
+	}
+
+	if (dev->board.tda9887_conf) {
+		struct v4l2_priv_tun_config tda9887_cfg;
+
+		tda9887_cfg.tuner = TUNER_TDA9887;
+		tda9887_cfg.priv = &dev->board.tda9887_conf;
+
+		v4l2_device_call_all(v4l2_dev,
+				     0, tuner, s_config, &tda9887_cfg);
+	}
+
+	if (dev->tuner_type == TUNER_XC2028) {
+		struct v4l2_priv_tun_config  xc2028_cfg;
+		struct xc2028_ctrl           ctl;
+
+		memset(&xc2028_cfg, 0, sizeof(xc2028_cfg));
+		memset(&ctl, 0, sizeof(ctl));
+
+		em28xx_setup_xc3028(dev, &ctl);
+
+		xc2028_cfg.tuner = TUNER_XC2028;
+		xc2028_cfg.priv  = &ctl;
+
+		v4l2_device_call_all(v4l2_dev, 0, tuner, s_config, &xc2028_cfg);
+	}
+
+	/* configure tuner */
+	f.tuner = 0;
+	f.type = V4L2_TUNER_ANALOG_TV;
+	f.frequency = 9076;     /* just a magic number */
+	v4l2->frequency = f.frequency;
+	v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency, &f);
+}
+
+static int em28xx_v4l2_init(struct em28xx *dev)
+{
+	u8 val;
+	int ret;
+	unsigned int maxw;
+	struct v4l2_ctrl_handler *hdl;
+	struct em28xx_v4l2 *v4l2;
+
+	if (dev->is_audio_only) {
+		/* Shouldn't initialize IR for this interface */
+		return 0;
+	}
+
+	if (!dev->has_video) {
+		/* This device does not support the v4l2 extension */
+		return 0;
+	}
+
+	dev_info(&dev->intf->dev, "Registering V4L2 extension\n");
+
+	mutex_lock(&dev->lock);
+
+	v4l2 = kzalloc(sizeof(*v4l2), GFP_KERNEL);
+	if (!v4l2) {
+		mutex_unlock(&dev->lock);
+		return -ENOMEM;
+	}
+	kref_init(&v4l2->ref);
+	v4l2->dev = dev;
+	dev->v4l2 = v4l2;
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+	v4l2->v4l2_dev.mdev = dev->media_dev;
+#endif
+	ret = v4l2_device_register(&dev->intf->dev, &v4l2->v4l2_dev);
+	if (ret < 0) {
+		dev_err(&dev->intf->dev,
+			"Call to v4l2_device_register() failed!\n");
+		goto err;
+	}
+
+	hdl = &v4l2->ctrl_handler;
+	v4l2_ctrl_handler_init(hdl, 8);
+	v4l2->v4l2_dev.ctrl_handler = hdl;
+
+	if (dev->is_webcam)
+		v4l2->progressive = true;
+
+	/*
+	 * Default format, used for tvp5150 or saa711x output formats
+	 */
+	v4l2->vinmode = EM28XX_VINMODE_YUV422_CbYCrY;
+	v4l2->vinctl  = EM28XX_VINCTRL_INTERLACED |
+			EM28XX_VINCTRL_CCIR656_ENABLE;
+
+	/* request some modules */
+
+	if (dev->has_msp34xx)
+		v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+				    &dev->i2c_adap[dev->def_i2c_bus],
+				    "msp3400", 0, msp3400_addrs);
+
+	if (dev->board.decoder == EM28XX_SAA711X)
+		v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+				    &dev->i2c_adap[dev->def_i2c_bus],
+				    "saa7115_auto", 0, saa711x_addrs);
+
+	if (dev->board.decoder == EM28XX_TVP5150)
+		v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+				    &dev->i2c_adap[dev->def_i2c_bus],
+				    "tvp5150", 0, tvp5150_addrs);
+
+	if (dev->board.adecoder == EM28XX_TVAUDIO)
+		v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+				    &dev->i2c_adap[dev->def_i2c_bus],
+				    "tvaudio", dev->board.tvaudio_addr, NULL);
+
+	/* Initialize tuner and camera */
+
+	if (dev->board.tuner_type != TUNER_ABSENT) {
+		unsigned short tuner_addr = dev->board.tuner_addr;
+		int has_demod = (dev->board.tda9887_conf & TDA9887_PRESENT);
+
+		if (dev->board.radio.type)
+			v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+					    &dev->i2c_adap[dev->def_i2c_bus],
+					    "tuner", dev->board.radio_addr,
+					    NULL);
+
+		if (has_demod)
+			v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+					    &dev->i2c_adap[dev->def_i2c_bus],
+					    "tuner", 0,
+					    v4l2_i2c_tuner_addrs(ADDRS_DEMOD));
+		if (tuner_addr == 0) {
+			enum v4l2_i2c_tuner_type type =
+				has_demod ? ADDRS_TV_WITH_DEMOD : ADDRS_TV;
+			struct v4l2_subdev *sd;
+
+			sd = v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+						 &dev->i2c_adap[dev->def_i2c_bus],
+						 "tuner", 0,
+						 v4l2_i2c_tuner_addrs(type));
+
+			if (sd)
+				tuner_addr = v4l2_i2c_subdev_addr(sd);
+		} else {
+			v4l2_i2c_new_subdev(&v4l2->v4l2_dev,
+					    &dev->i2c_adap[dev->def_i2c_bus],
+					    "tuner", tuner_addr, NULL);
+		}
+
+		em28xx_tuner_setup(dev, tuner_addr);
+	}
+
+	if (dev->em28xx_sensor != EM28XX_NOSENSOR)
+		em28xx_init_camera(dev);
+
+	/* Configure audio */
+	ret = em28xx_audio_setup(dev);
+	if (ret < 0) {
+		dev_err(&dev->intf->dev,
+			"%s: Error while setting audio - error [%d]!\n",
+			__func__, ret);
+		goto unregister_dev;
+	}
+	if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_AUDIO_VOLUME, 0, 0x1f, 1, 0x1f);
+	} else {
+		/* install the em28xx notify callback */
+		v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_MUTE),
+				 em28xx_ctrl_notify, dev);
+		v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_VOLUME),
+				 em28xx_ctrl_notify, dev);
+	}
+
+	/* wake i2c devices */
+	em28xx_wake_i2c(dev);
+
+	/* init video dma queues */
+	INIT_LIST_HEAD(&dev->vidq.active);
+	INIT_LIST_HEAD(&dev->vbiq.active);
+
+	if (dev->has_msp34xx) {
+		/* Send a reset to other chips via gpio */
+		ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xf7);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"%s: em28xx_write_reg - msp34xx(1) failed! error [%d]\n",
+				__func__, ret);
+			goto unregister_dev;
+		}
+		usleep_range(10000, 11000);
+
+		ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xff);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"%s: em28xx_write_reg - msp34xx(2) failed! error [%d]\n",
+				__func__, ret);
+			goto unregister_dev;
+		}
+		usleep_range(10000, 11000);
+	}
+
+	/* set default norm */
+	v4l2->norm = V4L2_STD_PAL;
+	v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm);
+	v4l2->interlaced_fieldmode = EM28XX_INTERLACED_DEFAULT;
+
+	/* Analog specific initialization */
+	v4l2->format = &format[0];
+
+	maxw = norm_maxw(dev);
+	/*
+	 * MaxPacketSize for em2800 is too small to capture at full resolution
+	 * use half of maxw as the scaler can only scale to 50%
+	 */
+	if (dev->board.is_em2800)
+		maxw /= 2;
+
+	em28xx_set_video_format(dev, format[0].fourcc,
+				maxw, norm_maxh(dev));
+
+	video_mux(dev, 0);
+
+	/* Audio defaults */
+	dev->mute = 1;
+	dev->volume = 0x1f;
+
+/*	em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
+	val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
+	em28xx_write_reg(dev, EM28XX_R0F_XCLK,
+			 (EM28XX_XCLK_AUDIO_UNMUTE | val));
+
+	em28xx_set_outfmt(dev);
+
+	/* Add image controls */
+
+	/*
+	 * NOTE: at this point, the subdevices are already registered, so
+	 * bridge controls are only added/enabled when no subdevice provides
+	 * them
+	 */
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_CONTRAST))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_CONTRAST,
+				  0, 0x1f, 1, CONTRAST_DEFAULT);
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_BRIGHTNESS))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_BRIGHTNESS,
+				  -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_SATURATION))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_SATURATION,
+				  0, 0x1f, 1, SATURATION_DEFAULT);
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_BLUE_BALANCE))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_BLUE_BALANCE,
+				  -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_RED_BALANCE))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_RED_BALANCE,
+				  -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
+	if (!v4l2_ctrl_find(hdl, V4L2_CID_SHARPNESS))
+		v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+				  V4L2_CID_SHARPNESS,
+				  0, 0x0f, 1, SHARPNESS_DEFAULT);
+
+	/* Reset image controls */
+	em28xx_colorlevels_set_default(dev);
+	v4l2_ctrl_handler_setup(hdl);
+	ret = hdl->error;
+	if (ret)
+		goto unregister_dev;
+
+	/* allocate and fill video video_device struct */
+	em28xx_vdev_init(dev, &v4l2->vdev, &em28xx_video_template, "video");
+	mutex_init(&v4l2->vb_queue_lock);
+	mutex_init(&v4l2->vb_vbi_queue_lock);
+	v4l2->vdev.queue = &v4l2->vb_vidq;
+	v4l2->vdev.queue->lock = &v4l2->vb_queue_lock;
+	v4l2->vdev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE |
+				 V4L2_CAP_STREAMING;
+	if (dev->int_audio_type != EM28XX_INT_AUDIO_NONE)
+		v4l2->vdev.device_caps |= V4L2_CAP_AUDIO;
+	if (dev->tuner_type != TUNER_ABSENT)
+		v4l2->vdev.device_caps |= V4L2_CAP_TUNER;
+
+
+	/* disable inapplicable ioctls */
+	if (dev->is_webcam) {
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_QUERYSTD);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_STD);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_STD);
+	} else {
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_PARM);
+	}
+	if (dev->tuner_type == TUNER_ABSENT) {
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_TUNER);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_TUNER);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_FREQUENCY);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_FREQUENCY);
+	}
+	if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) {
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_AUDIO);
+		v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_AUDIO);
+	}
+
+	/* register v4l2 video video_device */
+	ret = video_register_device(&v4l2->vdev, VFL_TYPE_VIDEO,
+				    video_nr[dev->devno]);
+	if (ret) {
+		dev_err(&dev->intf->dev,
+			"unable to register video device (error=%i).\n", ret);
+		goto unregister_dev;
+	}
+
+	/* Allocate and fill vbi video_device struct */
+	if (em28xx_vbi_supported(dev) == 1) {
+		em28xx_vdev_init(dev, &v4l2->vbi_dev, &em28xx_video_template,
+				 "vbi");
+
+		v4l2->vbi_dev.queue = &v4l2->vb_vbiq;
+		v4l2->vbi_dev.queue->lock = &v4l2->vb_vbi_queue_lock;
+		v4l2->vbi_dev.device_caps = V4L2_CAP_STREAMING |
+			V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
+		if (dev->tuner_type != TUNER_ABSENT)
+			v4l2->vbi_dev.device_caps |= V4L2_CAP_TUNER;
+
+		/* disable inapplicable ioctls */
+		v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_PARM);
+		if (dev->tuner_type == TUNER_ABSENT) {
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_TUNER);
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_TUNER);
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_FREQUENCY);
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_FREQUENCY);
+		}
+		if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) {
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_AUDIO);
+			v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_AUDIO);
+		}
+
+		/* register v4l2 vbi video_device */
+		ret = video_register_device(&v4l2->vbi_dev, VFL_TYPE_VBI,
+					    vbi_nr[dev->devno]);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"unable to register vbi device\n");
+			goto unregister_dev;
+		}
+	}
+
+	if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
+		em28xx_vdev_init(dev, &v4l2->radio_dev, &em28xx_radio_template,
+				 "radio");
+		v4l2->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
+		ret = video_register_device(&v4l2->radio_dev, VFL_TYPE_RADIO,
+					    radio_nr[dev->devno]);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"can't register radio device\n");
+			goto unregister_dev;
+		}
+		dev_info(&dev->intf->dev,
+			 "Registered radio device as %s\n",
+			 video_device_node_name(&v4l2->radio_dev));
+	}
+
+	/* Init entities at the Media Controller */
+	em28xx_v4l2_create_entities(dev);
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+	ret = v4l2_mc_create_media_graph(dev->media_dev);
+	if (ret) {
+		dev_err(&dev->intf->dev,
+			"failed to create media graph\n");
+		em28xx_v4l2_media_release(dev);
+		goto unregister_dev;
+	}
+#endif
+
+	dev_info(&dev->intf->dev,
+		 "V4L2 video device registered as %s\n",
+		 video_device_node_name(&v4l2->vdev));
+
+	if (video_is_registered(&v4l2->vbi_dev))
+		dev_info(&dev->intf->dev,
+			 "V4L2 VBI device registered as %s\n",
+			 video_device_node_name(&v4l2->vbi_dev));
+
+	/* Save some power by putting tuner to sleep */
+	v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, standby);
+
+	/* initialize videobuf2 stuff */
+	em28xx_vb2_setup(dev);
+
+	dev_info(&dev->intf->dev,
+		 "V4L2 extension successfully initialized\n");
+
+	kref_get(&dev->ref);
+
+	mutex_unlock(&dev->lock);
+	return 0;
+
+unregister_dev:
+	if (video_is_registered(&v4l2->radio_dev)) {
+		dev_info(&dev->intf->dev,
+			 "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->radio_dev));
+		video_unregister_device(&v4l2->radio_dev);
+	}
+	if (video_is_registered(&v4l2->vbi_dev)) {
+		dev_info(&dev->intf->dev,
+			 "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->vbi_dev));
+		video_unregister_device(&v4l2->vbi_dev);
+	}
+	if (video_is_registered(&v4l2->vdev)) {
+		dev_info(&dev->intf->dev,
+			 "V4L2 device %s deregistered\n",
+			 video_device_node_name(&v4l2->vdev));
+		video_unregister_device(&v4l2->vdev);
+	}
+
+	v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
+	v4l2_device_unregister(&v4l2->v4l2_dev);
+err:
+	dev->v4l2 = NULL;
+	kref_put(&v4l2->ref, em28xx_free_v4l2);
+	mutex_unlock(&dev->lock);
+	return ret;
+}
+
+static struct em28xx_ops v4l2_ops = {
+	.id   = EM28XX_V4L2,
+	.name = "Em28xx v4l2 Extension",
+	.init = em28xx_v4l2_init,
+	.fini = em28xx_v4l2_fini,
+	.suspend = em28xx_v4l2_suspend,
+	.resume = em28xx_v4l2_resume,
+};
+
+static int __init em28xx_video_register(void)
+{
+	return em28xx_register_extension(&v4l2_ops);
+}
+
+static void __exit em28xx_video_unregister(void)
+{
+	em28xx_unregister_extension(&v4l2_ops);
+}
+
+module_init(em28xx_video_register);
+module_exit(em28xx_video_unregister);
diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
new file mode 100644
index 000000000..55a46faaf
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -0,0 +1,856 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
+ *
+ * Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
+ *		      Ludovico Cavedon <cavedon@sssup.it>
+ *		      Mauro Carvalho Chehab <mchehab@kernel.org>
+ * Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
+ *
+ * Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _EM28XX_H
+#define _EM28XX_H
+
+#include <linux/bitfield.h>
+
+#define EM28XX_VERSION "0.2.2"
+#define DRIVER_DESC    "Empia em28xx device driver"
+
+#include <linux/workqueue.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/kref.h>
+#include <linux/videodev2.h>
+
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-vmalloc.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/i2c/ir-kbd-i2c.h>
+#include <media/rc-core.h>
+#include "tuner-xc2028.h"
+#include "xc5000.h"
+#include "em28xx-reg.h"
+
+/* Boards supported by driver */
+#define EM2800_BOARD_UNKNOWN			  0
+#define EM2820_BOARD_UNKNOWN			  1
+#define EM2820_BOARD_TERRATEC_CINERGY_250	  2
+#define EM2820_BOARD_PINNACLE_USB_2		  3
+#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2	  4
+#define EM2820_BOARD_MSI_VOX_USB_2		  5
+#define EM2800_BOARD_TERRATEC_CINERGY_200	  6
+#define EM2800_BOARD_LEADTEK_WINFAST_USBII	  7
+#define EM2800_BOARD_KWORLD_USB2800		  8
+#define EM2820_BOARD_PINNACLE_DVC_90		  9
+#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900	  10
+#define EM2880_BOARD_TERRATEC_HYBRID_XS		  11
+#define EM2820_BOARD_KWORLD_PVRTV2800RF		  12
+#define EM2880_BOARD_TERRATEC_PRODIGY_XS	  13
+#define EM2820_BOARD_PROLINK_PLAYTV_USB2	  14
+#define EM2800_BOARD_VGEAR_POCKETTV		  15
+#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950	  16
+#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO	  17
+#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2	  18
+#define EM2860_BOARD_SAA711X_REFERENCE_DESIGN	  19
+#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600	  20
+#define EM2800_BOARD_GRABBEEX_USB2800		  21
+#define EM2750_BOARD_UNKNOWN			  22
+#define EM2750_BOARD_DLCW_130			  23
+#define EM2820_BOARD_DLINK_USB_TV		  24
+#define EM2820_BOARD_GADMEI_UTV310		  25
+#define EM2820_BOARD_HERCULES_SMART_TV_USB2	  26
+#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME	  27
+#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
+#define EM2860_BOARD_TVP5150_REFERENCE_DESIGN	  29
+#define EM2820_BOARD_VIDEOLOGY_20K14XUSB	  30
+#define EM2821_BOARD_USBGEAR_VD204		  31
+#define EM2821_BOARD_SUPERCOMP_USB_2		  32
+#define EM2860_BOARD_ELGATO_VIDEO_CAPTURE	  33
+#define EM2860_BOARD_TERRATEC_HYBRID_XS		  34
+#define EM2860_BOARD_TYPHOON_DVD_MAKER		  35
+#define EM2860_BOARD_NETGMBH_CAM		  36
+#define EM2860_BOARD_GADMEI_UTV330		  37
+#define EM2861_BOARD_YAKUMO_MOVIE_MIXER		  38
+#define EM2861_BOARD_KWORLD_PVRTV_300U		  39
+#define EM2861_BOARD_PLEXTOR_PX_TV100U		  40
+#define EM2870_BOARD_KWORLD_350U		  41
+#define EM2870_BOARD_KWORLD_355U		  42
+#define EM2870_BOARD_TERRATEC_XS		  43
+#define EM2870_BOARD_TERRATEC_XS_MT2060		  44
+#define EM2870_BOARD_PINNACLE_PCTV_DVB		  45
+#define EM2870_BOARD_COMPRO_VIDEOMATE		  46
+#define EM2880_BOARD_KWORLD_DVB_305U		  47
+#define EM2880_BOARD_KWORLD_DVB_310U		  48
+#define EM2880_BOARD_MSI_DIGIVOX_AD		  49
+#define EM2880_BOARD_MSI_DIGIVOX_AD_II		  50
+#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR	  51
+#define EM2881_BOARD_DNT_DA2_HYBRID		  52
+#define EM2881_BOARD_PINNACLE_HYBRID_PRO	  53
+#define EM2882_BOARD_KWORLD_VS_DVBT		  54
+#define EM2882_BOARD_TERRATEC_HYBRID_XS		  55
+#define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E	  56
+#define EM2883_BOARD_KWORLD_HYBRID_330U		  57
+#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU	  58
+#define EM2874_BOARD_PCTV_HD_MINI_80E		  59
+#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850	  60
+#define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2	  61
+#define EM2820_BOARD_GADMEI_TVR200		  62
+#define EM2860_BOARD_KAIOMY_TVNPC_U2		  63
+#define EM2860_BOARD_EASYCAP			  64
+#define EM2820_BOARD_IODATA_GVMVP_SZ		  65
+#define EM2880_BOARD_EMPIRE_DUAL_TV		  66
+#define EM2860_BOARD_TERRATEC_GRABBY		  67
+#define EM2860_BOARD_TERRATEC_AV350		  68
+#define EM2882_BOARD_KWORLD_ATSC_315U		  69
+#define EM2882_BOARD_EVGA_INDTUBE		  70
+#define EM2820_BOARD_SILVERCREST_WEBCAM		  71
+#define EM2861_BOARD_GADMEI_UTV330PLUS		  72
+#define EM2870_BOARD_REDDO_DVB_C_USB_BOX	  73
+#define EM2800_BOARD_VC211A			  74
+#define EM2882_BOARD_DIKOM_DK300		  75
+#define EM2870_BOARD_KWORLD_A340		  76
+#define EM2874_BOARD_LEADERSHIP_ISDBT		  77
+#define EM28174_BOARD_PCTV_290E			  78
+#define EM2884_BOARD_TERRATEC_H5		  79
+#define EM28174_BOARD_PCTV_460E			  80
+#define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C	  81
+#define EM2884_BOARD_CINERGY_HTC_STICK		  82
+#define EM2860_BOARD_HT_VIDBOX_NW03		  83
+#define EM2874_BOARD_MAXMEDIA_UB425_TC		  84
+#define EM2884_BOARD_PCTV_510E			  85
+#define EM2884_BOARD_PCTV_520E			  86
+#define EM2884_BOARD_TERRATEC_HTC_USB_XS	  87
+#define EM2884_BOARD_C3TECH_DIGITAL_DUO		  88
+#define EM2874_BOARD_DELOCK_61959		  89
+#define EM2874_BOARD_KWORLD_UB435Q_V2		  90
+#define EM2765_BOARD_SPEEDLINK_VAD_LAPLACE	  91
+#define EM28178_BOARD_PCTV_461E                   92
+#define EM2874_BOARD_KWORLD_UB435Q_V3		  93
+#define EM28178_BOARD_PCTV_292E                   94
+#define EM2861_BOARD_LEADTEK_VC100                95
+#define EM28178_BOARD_TERRATEC_T2_STICK_HD        96
+#define EM2884_BOARD_ELGATO_EYETV_HYBRID_2008     97
+#define EM28178_BOARD_PLEX_PX_BCUD                98
+#define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB  99
+#define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595 100
+#define EM2884_BOARD_TERRATEC_H6		  101
+#define EM2882_BOARD_ZOLID_HYBRID_TV_STICK		102
+#define EM2861_BOARD_MAGIX_VIDEOWANDLER2          103
+#define EM28178_BOARD_PCTV_461E_V2                104
+#define EM2860_BOARD_MYGICA_IGRABBER              105
+
+/* Limits minimum and default number of buffers */
+#define EM28XX_MIN_BUF 4
+#define EM28XX_DEF_BUF 8
+
+/*Limits the max URB message size */
+#define URB_MAX_CTRL_SIZE 80
+
+/* Params for validated field */
+#define EM28XX_BOARD_NOT_VALIDATED 1
+#define EM28XX_BOARD_VALIDATED	   0
+
+/* Params for em28xx_cmd() audio */
+#define EM28XX_START_AUDIO      1
+#define EM28XX_STOP_AUDIO       0
+
+/* maximum number of em28xx boards */
+#define EM28XX_MAXBOARDS DVB_MAX_ADAPTERS /* All adapters could be em28xx */
+
+/* maximum number of frames that can be queued */
+#define EM28XX_NUM_FRAMES 5
+/* number of frames that get used for v4l2_read() */
+#define EM28XX_NUM_READ_FRAMES 2
+
+/* number of buffers for isoc transfers */
+#define EM28XX_NUM_BUFS 5
+#define EM28XX_DVB_NUM_BUFS 5
+
+/* max number of I2C buses on em28xx devices */
+#define NUM_I2C_BUSES	2
+
+/*
+ * isoc transfers: number of packets for each buffer
+ * windows requests only 64 packets .. so we better do the same
+ * this is what I found out for all alternate numbers there!
+ */
+#define EM28XX_NUM_ISOC_PACKETS 64
+#define EM28XX_DVB_NUM_ISOC_PACKETS 64
+
+/*
+ * bulk transfers: transfer buffer size = packet size * packet multiplier
+ * USB 2.0 spec says bulk packet size is always 512 bytes
+ */
+#define EM28XX_BULK_PACKET_MULTIPLIER 384
+#define EM28XX_DVB_BULK_PACKET_MULTIPLIER 94
+
+#define EM28XX_INTERLACED_DEFAULT 1
+
+/* time in msecs to wait for AC97 xfers to finish */
+#define EM28XX_AC97_XFER_TIMEOUT	100
+
+/* max. number of button state polling addresses */
+#define EM28XX_NUM_BUTTON_ADDRESSES_MAX		5
+
+#define PRIMARY_TS	0
+#define SECONDARY_TS	1
+
+enum em28xx_mode {
+	EM28XX_SUSPEND,
+	EM28XX_ANALOG_MODE,
+	EM28XX_DIGITAL_MODE,
+};
+
+struct em28xx;
+
+/**
+ * struct em28xx_usb_bufs - Contains URB-related buffer data
+ *
+ * @max_pkt_size:	max packet size of isoc transaction
+ * @num_packets:	number of packets in each buffer
+ * @num_bufs:		number of allocated urb
+ * @urb:		urb for isoc/bulk transfers
+ * @buf:		transfer buffers for isoc/bulk transfer
+ */
+struct em28xx_usb_bufs {
+	int				max_pkt_size;
+	int				num_packets;
+	int				num_bufs;
+	struct urb			**urb;
+	char				**buf;
+};
+
+/**
+ * struct em28xx_usb_ctl - Contains URB-related buffer data
+ *
+ * @analog_bufs:	isoc/bulk transfer buffers for analog mode
+ * @digital_bufs:	isoc/bulk transfer buffers for digital mode
+ * @vid_buf:		Stores already requested video buffers
+ * @vbi_buf:		Stores already requested VBI buffers
+ * @urb_data_copy:	copy data from URB
+ */
+struct em28xx_usb_ctl {
+	struct em28xx_usb_bufs		analog_bufs;
+	struct em28xx_usb_bufs		digital_bufs;
+	struct em28xx_buffer	*vid_buf;
+	struct em28xx_buffer	*vbi_buf;
+	int (*urb_data_copy)(struct em28xx *dev, struct urb *urb);
+};
+
+/**
+ * struct em28xx_fmt - Struct to enumberate video formats
+ *
+ * @fourcc:	v4l2 format id
+ * @depth:	mean number of bits to represent a pixel
+ * @reg:	em28xx register value to set it
+ */
+struct em28xx_fmt {
+	u32	fourcc;
+	int	depth;
+	int	reg;
+};
+
+/**
+ * struct em28xx_buffer- buffer for storing one video frame
+ *
+ * @vb:		common v4l buffer stuff
+ * @list:	List to associate it with the other buffers
+ * @mem:	pointer to the buffer, as returned by vb2_plane_vaddr()
+ * @length:	length of the buffer, as returned by vb2_plane_size()
+ * @top_field:	If non-zero, indicate that the buffer is the top field
+ * @pos:	Indicate the next position of the buffer to be filled.
+ * @vb_buf:	pointer to vmalloc memory address in vb
+ *
+ * .. note::
+ *
+ *    in interlaced mode, @pos is reset to zero at the start of each new
+ *    field (not frame !)
+ */
+struct em28xx_buffer {
+	struct vb2_v4l2_buffer	vb;		/* must be first */
+
+	struct list_head	list;
+
+	void			*mem;
+	unsigned int		length;
+	int			top_field;
+
+	unsigned int		pos;
+
+	char			*vb_buf;
+};
+
+struct em28xx_dmaqueue {
+	struct list_head       active;
+
+	wait_queue_head_t          wq;
+};
+
+/* inputs */
+
+#define MAX_EM28XX_INPUT 4
+enum enum28xx_itype {
+	EM28XX_VMUX_COMPOSITE = 1,
+	EM28XX_VMUX_SVIDEO,
+	EM28XX_VMUX_TELEVISION,
+	EM28XX_RADIO,
+};
+
+enum em28xx_ac97_mode {
+	EM28XX_NO_AC97 = 0,
+	EM28XX_AC97_EM202,
+	EM28XX_AC97_SIGMATEL,
+	EM28XX_AC97_OTHER,
+};
+
+struct em28xx_audio_mode {
+	enum em28xx_ac97_mode ac97;
+};
+
+enum em28xx_int_audio_type {
+	EM28XX_INT_AUDIO_NONE = 0,
+	EM28XX_INT_AUDIO_AC97,
+	EM28XX_INT_AUDIO_I2S,
+};
+
+enum em28xx_usb_audio_type {
+	EM28XX_USB_AUDIO_NONE = 0,
+	EM28XX_USB_AUDIO_CLASS,
+	EM28XX_USB_AUDIO_VENDOR,
+};
+
+/**
+ * em28xx_amux - describes the type of audio input used by em28xx
+ *
+ * @EM28XX_AMUX_UNUSED:
+ *	Used only on em28xx dev->map field, in order to mark an entry
+ *	as unused.
+ * @EM28XX_AMUX_VIDEO:
+ *	On devices without AC97, this is the only value that it is currently
+ *	allowed.
+ *	On devices with AC97, it corresponds to the AC97 mixer "Video" control.
+ * @EM28XX_AMUX_LINE_IN:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "Line In".
+ * @EM28XX_AMUX_VIDEO2:
+ *	Only for devices with AC97. It means that em28xx should use "Line In"
+ *	And AC97 should use the "Video" mixer control.
+ * @EM28XX_AMUX_PHONE:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "Phone".
+ * @EM28XX_AMUX_MIC:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "Mic".
+ * @EM28XX_AMUX_CD:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "CD".
+ * @EM28XX_AMUX_AUX:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "Aux".
+ * @EM28XX_AMUX_PCM_OUT:
+ *	Only for devices with AC97. Corresponds to AC97 mixer "PCM out".
+ *
+ * The em28xx chip itself has only two audio inputs: tuner and line in.
+ * On almost all devices, only the tuner input is used.
+ *
+ * However, on most devices, an auxiliary AC97 codec device is used,
+ * usually connected to the em28xx tuner input (except for
+ * @EM28XX_AMUX_LINE_IN).
+ *
+ * The AC97 device typically have several different inputs and outputs.
+ * The exact number and description depends on their model.
+ *
+ * It is possible to AC97 to mixer more than one different entries at the
+ * same time, via the alsa mux.
+ */
+enum em28xx_amux {
+	EM28XX_AMUX_UNUSED = -1,
+	EM28XX_AMUX_VIDEO = 0,
+	EM28XX_AMUX_LINE_IN,
+
+	/* Some less-common mixer setups */
+	EM28XX_AMUX_VIDEO2,
+	EM28XX_AMUX_PHONE,
+	EM28XX_AMUX_MIC,
+	EM28XX_AMUX_CD,
+	EM28XX_AMUX_AUX,
+	EM28XX_AMUX_PCM_OUT,
+};
+
+enum em28xx_aout {
+	/* AC97 outputs */
+	EM28XX_AOUT_MASTER = BIT(0),
+	EM28XX_AOUT_LINE   = BIT(1),
+	EM28XX_AOUT_MONO   = BIT(2),
+	EM28XX_AOUT_LFE    = BIT(3),
+	EM28XX_AOUT_SURR   = BIT(4),
+
+	/* PCM IN Mixer - used by AC97_RECORD_SELECT register */
+	EM28XX_AOUT_PCM_IN = BIT(7),
+
+	/* Bits 10-8 are used to indicate the PCM IN record select */
+	EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
+	EM28XX_AOUT_PCM_CD	= 1 << 8,
+	EM28XX_AOUT_PCM_VIDEO	= 2 << 8,
+	EM28XX_AOUT_PCM_AUX	= 3 << 8,
+	EM28XX_AOUT_PCM_LINE	= 4 << 8,
+	EM28XX_AOUT_PCM_STEREO	= 5 << 8,
+	EM28XX_AOUT_PCM_MONO	= 6 << 8,
+	EM28XX_AOUT_PCM_PHONE	= 7 << 8,
+};
+
+static inline int ac97_return_record_select(int a_out)
+{
+	return (a_out & 0x700) >> 8;
+}
+
+struct em28xx_reg_seq {
+	int reg;
+	unsigned char val, mask;
+	int sleep;
+};
+
+struct em28xx_input {
+	enum enum28xx_itype type;
+	unsigned int vmux;
+	enum em28xx_amux amux;
+	enum em28xx_aout aout;
+	const struct em28xx_reg_seq *gpio;
+};
+
+#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
+
+enum em28xx_decoder {
+	EM28XX_NODECODER = 0,
+	EM28XX_TVP5150,
+	EM28XX_SAA711X,
+};
+
+enum em28xx_sensor {
+	EM28XX_NOSENSOR = 0,
+	EM28XX_MT9V011,
+	EM28XX_MT9M001,
+	EM28XX_MT9M111,
+	EM28XX_OV2640,
+};
+
+enum em28xx_adecoder {
+	EM28XX_NOADECODER = 0,
+	EM28XX_TVAUDIO,
+};
+
+enum em28xx_led_role {
+	EM28XX_LED_ANALOG_CAPTURING = 0,
+	EM28XX_LED_DIGITAL_CAPTURING,
+	EM28XX_LED_DIGITAL_CAPTURING_TS2,
+	EM28XX_LED_ILLUMINATION,
+	EM28XX_NUM_LED_ROLES, /* must be the last */
+};
+
+struct em28xx_led {
+	enum em28xx_led_role role;
+	u8 gpio_reg;
+	u8 gpio_mask;
+	bool inverted;
+};
+
+enum em28xx_button_role {
+	EM28XX_BUTTON_SNAPSHOT = 0,
+	EM28XX_BUTTON_ILLUMINATION,
+	EM28XX_NUM_BUTTON_ROLES, /* must be the last */
+};
+
+struct em28xx_button {
+	enum em28xx_button_role role;
+	u8 reg_r;
+	u8 reg_clearing;
+	u8 mask;
+	bool inverted;
+};
+
+struct em28xx_board {
+	char *name;
+	int vchannels;
+	int tuner_type;
+	int tuner_addr;
+	unsigned int def_i2c_bus;	/* Default I2C bus */
+
+	/* i2c flags */
+	unsigned int tda9887_conf;
+
+	/* GPIO sequences */
+	const struct em28xx_reg_seq *dvb_gpio;
+	const struct em28xx_reg_seq *suspend_gpio;
+	const struct em28xx_reg_seq *tuner_gpio;
+	const struct em28xx_reg_seq *mute_gpio;
+
+	unsigned int is_em2800:1;
+	unsigned int has_msp34xx:1;
+	unsigned int mts_firmware:1;
+	unsigned int max_range_640_480:1;
+	unsigned int has_dvb:1;
+	unsigned int has_dual_ts:1;
+	unsigned int is_webcam:1;
+	unsigned int valid:1;
+	unsigned int has_ir_i2c:1;
+
+	unsigned char xclk, i2c_speed;
+	unsigned char radio_addr;
+	unsigned short tvaudio_addr;
+
+	enum em28xx_decoder decoder;
+	enum em28xx_adecoder adecoder;
+
+	struct em28xx_input       input[MAX_EM28XX_INPUT];
+	struct em28xx_input	  radio;
+	char			  *ir_codes;
+
+	/* LEDs that need to be controlled explicitly */
+	struct em28xx_led	  *leds;
+
+	/* Buttons */
+	const struct em28xx_button *buttons;
+};
+
+struct em28xx_eeprom {
+	u8 id[4];			/* 1a eb 67 95 */
+	__le16 vendor_ID;
+	__le16 product_ID;
+
+	__le16 chip_conf;
+
+	__le16 board_conf;
+
+	__le16 string1, string2, string3;
+
+	u8 string_idx_table;
+};
+
+#define EM28XX_CAPTURE_STREAM_EN 1
+
+/* em28xx extensions */
+#define EM28XX_AUDIO   0x10
+#define EM28XX_DVB     0x20
+#define EM28XX_RC      0x30
+#define EM28XX_V4L2    0x40
+
+/* em28xx resource types (used for res_get/res_lock etc */
+#define EM28XX_RESOURCE_VIDEO 0x01
+#define EM28XX_RESOURCE_VBI   0x02
+
+struct em28xx_v4l2 {
+	struct kref ref;
+	struct em28xx *dev;
+
+	struct v4l2_device v4l2_dev;
+	struct v4l2_ctrl_handler ctrl_handler;
+
+	struct video_device vdev;
+	struct video_device vbi_dev;
+	struct video_device radio_dev;
+
+	/* Videobuf2 */
+	struct vb2_queue vb_vidq;
+	struct vb2_queue vb_vbiq;
+	struct mutex vb_queue_lock;	/* Protects vb_vidq */
+	struct mutex vb_vbi_queue_lock;	/* Protects vb_vbiq */
+
+	u8 vinmode;
+	u8 vinctl;
+
+	/* Camera specific fields */
+	int sensor_xres;
+	int sensor_yres;
+	int sensor_xtal;
+
+	int users;		/* user count for exclusive use */
+	int streaming_users;    /* number of actively streaming users */
+
+	u32 frequency;		/* selected tuner frequency */
+
+	struct em28xx_fmt *format;
+	v4l2_std_id norm;	/* selected tv norm */
+
+	/* Progressive/interlaced mode */
+	bool progressive;
+	int interlaced_fieldmode; /* 1=interlaced fields, 0=just top fields */
+	/* FIXME: everything else than interlaced_fieldmode=1 doesn't work */
+
+	/* Frame properties */
+	int width;		/* current frame width */
+	int height;		/* current frame height */
+	unsigned int hscale;	/* horizontal scale factor (see datasheet) */
+	unsigned int vscale;	/* vertical scale factor (see datasheet) */
+	unsigned int vbi_width;
+	unsigned int vbi_height; /* lines per field */
+
+	/* Capture state tracking */
+	int capture_type;
+	bool top_field;
+	int vbi_read;
+	unsigned int field_count;
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+	struct media_pad video_pad, vbi_pad;
+	struct media_entity *decoder;
+#endif
+};
+
+struct em28xx_audio {
+	char name[50];
+	unsigned int num_urb;
+	char **transfer_buffer;
+	struct urb **urb;
+	struct usb_device *udev;
+	unsigned int capture_transfer_done;
+	struct snd_pcm_substream   *capture_pcm_substream;
+
+	unsigned int hwptr_done_capture;
+	struct snd_card            *sndcard;
+
+	size_t period;
+
+	int users;
+	spinlock_t slock;		/* Protects struct em28xx_audio */
+
+	/* Controls streaming */
+	struct work_struct wq_trigger;	/* trigger to start/stop audio */
+	atomic_t       stream_started;	/* stream should be running if true */
+};
+
+struct em28xx;
+
+enum em28xx_i2c_algo_type {
+	EM28XX_I2C_ALGO_EM28XX = 0,
+	EM28XX_I2C_ALGO_EM2800,
+	EM28XX_I2C_ALGO_EM25XX_BUS_B,
+};
+
+struct em28xx_i2c_bus {
+	struct em28xx *dev;
+
+	unsigned int bus;
+	enum em28xx_i2c_algo_type algo_type;
+};
+
+/* main device struct */
+struct em28xx {
+	struct kref ref;
+
+	// Sub-module data
+	struct em28xx_v4l2 *v4l2;
+	struct em28xx_dvb *dvb;
+	struct em28xx_audio adev;
+	struct em28xx_IR *ir;
+
+	// generic device properties
+	int model;		// index in the device_data struct
+	int devno;		// marks the number of this device
+	enum em28xx_chip_id chip_id;
+
+	unsigned int is_em25xx:1;	// em25xx/em276x/7x/8x family bridge
+	unsigned int disconnected:1;	// device has been disconnected
+	unsigned int has_video:1;
+	unsigned int is_audio_only:1;
+	unsigned int is_webcam:1;
+	unsigned int has_msp34xx:1;
+	unsigned int i2c_speed:2;
+	enum em28xx_int_audio_type int_audio_type;
+	enum em28xx_usb_audio_type usb_audio_type;
+	unsigned char name[32];
+
+	struct em28xx_board board;
+
+	enum em28xx_sensor em28xx_sensor;	// camera specific
+
+	// Some older em28xx chips needs a waiting time after writing
+	unsigned int wait_after_write;
+
+	struct list_head	devlist;
+
+	u32 i2s_speed;		// I2S speed for audio digital stream
+
+	struct em28xx_audio_mode audio_mode;
+
+	int tuner_type;		// type of the tuner
+
+	// i2c i/o
+	struct i2c_adapter i2c_adap[NUM_I2C_BUSES];
+	struct i2c_client i2c_client[NUM_I2C_BUSES];
+	struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
+
+	unsigned char eeprom_addrwidth_16bit:1;
+	unsigned int def_i2c_bus;	// Default I2C bus
+	unsigned int cur_i2c_bus;	// Current I2C bus
+	struct rt_mutex i2c_bus_lock;
+
+	// video for linux
+	unsigned int ctl_input;	// selected input
+	unsigned int ctl_ainput;// selected audio input
+	unsigned int ctl_aoutput;// selected audio output
+	enum em28xx_amux amux_map[MAX_EM28XX_INPUT];
+
+	int mute;
+	int volume;
+
+	unsigned long hash;	// eeprom hash - for boards with generic ID
+	unsigned long i2c_hash;	// i2c devicelist hash -
+				// for boards with generic ID
+
+	struct work_struct         request_module_wk;
+
+	// locks
+	struct mutex lock;		/* protects em28xx struct */
+	struct mutex ctrl_urb_lock;	/* protects urb_buf */
+
+	// resources in use
+	unsigned int resources;
+
+	// eeprom content
+	u8 *eedata;
+	u16 eedata_len;
+
+	// Isoc control struct
+	struct em28xx_dmaqueue vidq;
+	struct em28xx_dmaqueue vbiq;
+	struct em28xx_usb_ctl usb_ctl;
+
+	spinlock_t slock; /* Protects em28xx video/vbi/dvb IRQ stream data */
+
+	// usb transfer
+	struct usb_interface *intf;	// the usb interface
+	u8 ifnum;		// number of the assigned usb interface
+	u8 analog_ep_isoc;	// address of isoc endpoint for analog
+	u8 analog_ep_bulk;	// address of bulk endpoint for analog
+	u8 dvb_ep_isoc_ts2;	// address of isoc endpoint for DVB TS2
+	u8 dvb_ep_bulk_ts2;	// address of bulk endpoint for DVB TS2
+	u8 dvb_ep_isoc;		// address of isoc endpoint for DVB
+	u8 dvb_ep_bulk;		// address of bulk endpoint for DVB
+	int alt;		// alternate setting
+	int max_pkt_size;	// max packet size of the selected ep at alt
+	int packet_multiplier;	// multiplier for wMaxPacketSize, used for
+				// URB buffer size definition
+	int num_alt;		// number of alternative settings
+	unsigned int *alt_max_pkt_size_isoc; // array of isoc wMaxPacketSize
+	unsigned int analog_xfer_bulk:1;	// use bulk instead of isoc
+						// transfers for analog
+	int dvb_alt_isoc;	// alternate setting for DVB isoc transfers
+	unsigned int dvb_max_pkt_size_isoc;	// isoc max packet size of the
+						// selected DVB ep at dvb_alt
+	unsigned int dvb_max_pkt_size_isoc_ts2;	// isoc max packet size of the
+						// selected DVB ep at dvb_alt
+	unsigned int dvb_xfer_bulk:1;		// use bulk instead of isoc
+						// transfers for DVB
+	char urb_buf[URB_MAX_CTRL_SIZE];	// urb control msg buffer
+
+	// helper funcs that call usb_control_msg
+	int (*em28xx_write_regs)(struct em28xx *dev, u16 reg,
+				 char *buf, int len);
+	int (*em28xx_read_reg)(struct em28xx *dev, u16 reg);
+	int (*em28xx_read_reg_req_len)(struct em28xx *dev, u8 req, u16 reg,
+				       char *buf, int len);
+	int (*em28xx_write_regs_req)(struct em28xx *dev, u8 req, u16 reg,
+				     char *buf, int len);
+	int (*em28xx_read_reg_req)(struct em28xx *dev, u8 req, u16 reg);
+
+	enum em28xx_mode mode;
+
+	// Button state polling
+	struct delayed_work buttons_query_work;
+	u8 button_polling_addresses[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
+	u8 button_polling_last_values[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
+	u8 num_button_polling_addresses;
+	u16 button_polling_interval; // [ms]
+	// Snapshot button input device
+	char snapshot_button_path[30];	// path of the input dev
+	struct input_dev *sbutton_input_dev;
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+	struct media_device *media_dev;
+	struct media_entity input_ent[MAX_EM28XX_INPUT];
+	struct media_pad input_pad[MAX_EM28XX_INPUT];
+#endif
+
+	struct em28xx	*dev_next;
+	int ts;
+};
+
+#define kref_to_dev(d) container_of(d, struct em28xx, ref)
+
+struct em28xx_ops {
+	struct list_head next;
+	char *name;
+	int id;
+	int (*init)(struct em28xx *dev);
+	int (*fini)(struct em28xx *dev);
+	int (*suspend)(struct em28xx *dev);
+	int (*resume)(struct em28xx *dev);
+};
+
+/* Provided by em28xx-i2c.c */
+void em28xx_do_i2c_scan(struct em28xx *dev, unsigned int bus);
+int  em28xx_i2c_register(struct em28xx *dev, unsigned int bus,
+			 enum em28xx_i2c_algo_type algo_type);
+int  em28xx_i2c_unregister(struct em28xx *dev, unsigned int bus);
+
+/* Provided by em28xx-core.c */
+int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
+			    char *buf, int len);
+int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
+int em28xx_read_reg(struct em28xx *dev, u16 reg);
+int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
+			  int len);
+int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
+int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
+int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
+			  u8 bitmask);
+int em28xx_toggle_reg_bits(struct em28xx *dev, u16 reg, u8 bitmask);
+
+int em28xx_read_ac97(struct em28xx *dev, u8 reg);
+int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
+
+int em28xx_audio_analog_set(struct em28xx *dev);
+int em28xx_audio_setup(struct em28xx *dev);
+
+const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
+					 enum em28xx_led_role role);
+int em28xx_capture_start(struct em28xx *dev, int start);
+int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
+		      int num_bufs, int max_pkt_size, int packet_multiplier);
+int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
+			 int xfer_bulk,
+			 int num_bufs, int max_pkt_size, int packet_multiplier,
+			 int (*urb_data_copy)
+					(struct em28xx *dev, struct urb *urb));
+void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
+void em28xx_stop_urbs(struct em28xx *dev);
+int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
+int em28xx_gpio_set(struct em28xx *dev, const struct em28xx_reg_seq *gpio);
+int em28xx_register_extension(struct em28xx_ops *dev);
+void em28xx_unregister_extension(struct em28xx_ops *dev);
+void em28xx_init_extension(struct em28xx *dev);
+void em28xx_close_extension(struct em28xx *dev);
+int em28xx_suspend_extension(struct em28xx *dev);
+int em28xx_resume_extension(struct em28xx *dev);
+
+/* Provided by em28xx-cards.c */
+extern const struct em28xx_board em28xx_boards[];
+extern struct usb_device_id em28xx_id_table[];
+int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
+void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl);
+void em28xx_free_device(struct kref *ref);
+
+/* Provided by em28xx-camera.c */
+int em28xx_detect_sensor(struct em28xx *dev);
+int em28xx_init_camera(struct em28xx *dev);
+
+#endif