Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 1037 insertions, 0 deletions

diff --git a/drivers/media/pci/ivtv/ivtv-streams.c b/drivers/media/pci/ivtv/ivtv-streams.c
new file mode 100644
index 0000000000..13d7d55e65
--- /dev/null
+++ b/drivers/media/pci/ivtv/ivtv-streams.c
@@ -0,0 +1,1037 @@
+/*
+    init/start/stop/exit stream functions
+    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
+    Copyright (C) 2004  Chris Kennedy <c@groovy.org>
+    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
+
+    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.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* License: GPL
+ * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
+ *
+ * This file will hold API related functions, both internal (firmware api)
+ * and external (v4l2, etc)
+ *
+ * -----
+ * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
+ *                      and Takeru KOMORIYA<komoriya@paken.org>
+ *
+ * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
+ *                using information provided by Jiun-Kuei Jung @ AVerMedia.
+ */
+
+#include "ivtv-driver.h"
+#include "ivtv-fileops.h"
+#include "ivtv-queue.h"
+#include "ivtv-mailbox.h"
+#include "ivtv-ioctl.h"
+#include "ivtv-irq.h"
+#include "ivtv-yuv.h"
+#include "ivtv-cards.h"
+#include "ivtv-streams.h"
+#include "ivtv-firmware.h"
+#include <media/v4l2-event.h>
+
+static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
+	.owner = THIS_MODULE,
+	.read = ivtv_v4l2_read,
+	.write = ivtv_v4l2_write,
+	.open = ivtv_v4l2_open,
+	.unlocked_ioctl = video_ioctl2,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
+#endif
+	.release = ivtv_v4l2_close,
+	.poll = ivtv_v4l2_enc_poll,
+};
+
+static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
+	.owner = THIS_MODULE,
+	.read = ivtv_v4l2_read,
+	.write = ivtv_v4l2_write,
+	.open = ivtv_v4l2_open,
+	.unlocked_ioctl = video_ioctl2,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
+#endif
+	.release = ivtv_v4l2_close,
+	.poll = ivtv_v4l2_dec_poll,
+};
+
+static const struct v4l2_file_operations ivtv_v4l2_radio_fops = {
+	.owner = THIS_MODULE,
+	.open = ivtv_v4l2_open,
+	.unlocked_ioctl = video_ioctl2,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
+#endif
+	.release = ivtv_v4l2_close,
+	.poll = ivtv_v4l2_enc_poll,
+};
+
+#define IVTV_V4L2_DEC_MPG_OFFSET  16	/* offset from 0 to register decoder mpg v4l2 minors on */
+#define IVTV_V4L2_ENC_PCM_OFFSET  24	/* offset from 0 to register pcm v4l2 minors on */
+#define IVTV_V4L2_ENC_YUV_OFFSET  32	/* offset from 0 to register yuv v4l2 minors on */
+#define IVTV_V4L2_DEC_YUV_OFFSET  48	/* offset from 0 to register decoder yuv v4l2 minors on */
+#define IVTV_V4L2_DEC_VBI_OFFSET   8	/* offset from 0 to register decoder vbi input v4l2 minors on */
+#define IVTV_V4L2_DEC_VOUT_OFFSET 16	/* offset from 0 to register vbi output v4l2 minors on */
+
+static struct {
+	const char *name;
+	int vfl_type;
+	int num_offset;
+	int dma, pio;
+	u32 v4l2_caps;
+	const struct v4l2_file_operations *fops;
+} ivtv_stream_info[] = {
+	{	/* IVTV_ENC_STREAM_TYPE_MPG */
+		"encoder MPG",
+		VFL_TYPE_VIDEO, 0,
+		DMA_FROM_DEVICE, 0,
+		V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_enc_fops
+	},
+	{	/* IVTV_ENC_STREAM_TYPE_YUV */
+		"encoder YUV",
+		VFL_TYPE_VIDEO, IVTV_V4L2_ENC_YUV_OFFSET,
+		DMA_FROM_DEVICE, 0,
+		V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_enc_fops
+	},
+	{	/* IVTV_ENC_STREAM_TYPE_VBI */
+		"encoder VBI",
+		VFL_TYPE_VBI, 0,
+		DMA_FROM_DEVICE, 0,
+		V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER |
+			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_enc_fops
+	},
+	{	/* IVTV_ENC_STREAM_TYPE_PCM */
+		"encoder PCM",
+		VFL_TYPE_VIDEO, IVTV_V4L2_ENC_PCM_OFFSET,
+		DMA_FROM_DEVICE, 0,
+		V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_enc_fops
+	},
+	{	/* IVTV_ENC_STREAM_TYPE_RAD */
+		"encoder radio",
+		VFL_TYPE_RADIO, 0,
+		DMA_NONE, 1,
+		V4L2_CAP_RADIO | V4L2_CAP_TUNER,
+		&ivtv_v4l2_radio_fops
+	},
+	{	/* IVTV_DEC_STREAM_TYPE_MPG */
+		"decoder MPG",
+		VFL_TYPE_VIDEO, IVTV_V4L2_DEC_MPG_OFFSET,
+		DMA_TO_DEVICE, 0,
+		V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_dec_fops
+	},
+	{	/* IVTV_DEC_STREAM_TYPE_VBI */
+		"decoder VBI",
+		VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
+		DMA_NONE, 1,
+		V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_enc_fops
+	},
+	{	/* IVTV_DEC_STREAM_TYPE_VOUT */
+		"decoder VOUT",
+		VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
+		DMA_NONE, 1,
+		V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_dec_fops
+	},
+	{	/* IVTV_DEC_STREAM_TYPE_YUV */
+		"decoder YUV",
+		VFL_TYPE_VIDEO, IVTV_V4L2_DEC_YUV_OFFSET,
+		DMA_TO_DEVICE, 0,
+		V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+		&ivtv_v4l2_dec_fops
+	}
+};
+
+static void ivtv_stream_init(struct ivtv *itv, int type)
+{
+	struct ivtv_stream *s = &itv->streams[type];
+
+	/* we need to keep vdev, so restore it afterwards */
+	memset(s, 0, sizeof(*s));
+
+	/* initialize ivtv_stream fields */
+	s->itv = itv;
+	s->type = type;
+	s->name = ivtv_stream_info[type].name;
+	s->vdev.device_caps = ivtv_stream_info[type].v4l2_caps;
+
+	if (ivtv_stream_info[type].pio)
+		s->dma = DMA_NONE;
+	else
+		s->dma = ivtv_stream_info[type].dma;
+	s->buf_size = itv->stream_buf_size[type];
+	if (s->buf_size)
+		s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
+	spin_lock_init(&s->qlock);
+	init_waitqueue_head(&s->waitq);
+	s->sg_handle = IVTV_DMA_UNMAPPED;
+	ivtv_queue_init(&s->q_free);
+	ivtv_queue_init(&s->q_full);
+	ivtv_queue_init(&s->q_dma);
+	ivtv_queue_init(&s->q_predma);
+	ivtv_queue_init(&s->q_io);
+}
+
+static int ivtv_prep_dev(struct ivtv *itv, int type)
+{
+	struct ivtv_stream *s = &itv->streams[type];
+	int num_offset = ivtv_stream_info[type].num_offset;
+	int num = itv->instance + ivtv_first_minor + num_offset;
+
+	/* These four fields are always initialized. If vdev.v4l2_dev == NULL, then
+	   this stream is not in use. In that case no other fields but these
+	   four can be used. */
+	s->vdev.v4l2_dev = NULL;
+	s->itv = itv;
+	s->type = type;
+	s->name = ivtv_stream_info[type].name;
+
+	/* Check whether the radio is supported */
+	if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
+		return 0;
+	if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
+		return 0;
+
+	/* User explicitly selected 0 buffers for these streams, so don't
+	   create them. */
+	if (ivtv_stream_info[type].dma != DMA_NONE &&
+	    itv->options.kilobytes[type] == 0) {
+		IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
+		return 0;
+	}
+
+	ivtv_stream_init(itv, type);
+
+	snprintf(s->vdev.name, sizeof(s->vdev.name), "%s %s",
+			itv->v4l2_dev.name, s->name);
+
+	s->vdev.num = num;
+	s->vdev.v4l2_dev = &itv->v4l2_dev;
+	if (ivtv_stream_info[type].v4l2_caps &
+			(V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_SLICED_VBI_OUTPUT))
+		s->vdev.vfl_dir = VFL_DIR_TX;
+	s->vdev.fops = ivtv_stream_info[type].fops;
+	s->vdev.ctrl_handler = itv->v4l2_dev.ctrl_handler;
+	s->vdev.release = video_device_release_empty;
+	s->vdev.tvnorms = V4L2_STD_ALL;
+	s->vdev.lock = &itv->serialize_lock;
+	if (s->type == IVTV_DEC_STREAM_TYPE_VBI) {
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_S_AUDIO);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_G_AUDIO);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMAUDIO);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMINPUT);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_S_INPUT);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_G_INPUT);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_S_FREQUENCY);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_G_FREQUENCY);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_S_TUNER);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_G_TUNER);
+		v4l2_disable_ioctl(&s->vdev, VIDIOC_S_STD);
+	}
+	ivtv_set_funcs(&s->vdev);
+	return 0;
+}
+
+/* Initialize v4l2 variables and prepare v4l2 devices */
+int ivtv_streams_setup(struct ivtv *itv)
+{
+	int type;
+
+	/* Setup V4L2 Devices */
+	for (type = 0; type < IVTV_MAX_STREAMS; type++) {
+		/* Prepare device */
+		if (ivtv_prep_dev(itv, type))
+			break;
+
+		if (itv->streams[type].vdev.v4l2_dev == NULL)
+			continue;
+
+		/* Allocate Stream */
+		if (ivtv_stream_alloc(&itv->streams[type]))
+			break;
+	}
+	if (type == IVTV_MAX_STREAMS)
+		return 0;
+
+	/* One or more streams could not be initialized. Clean 'em all up. */
+	ivtv_streams_cleanup(itv);
+	return -ENOMEM;
+}
+
+static int ivtv_reg_dev(struct ivtv *itv, int type)
+{
+	struct ivtv_stream *s = &itv->streams[type];
+	int vfl_type = ivtv_stream_info[type].vfl_type;
+	const char *name;
+	int num;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return 0;
+
+	num = s->vdev.num;
+	/* card number + user defined offset + device offset */
+	if (type != IVTV_ENC_STREAM_TYPE_MPG) {
+		struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
+
+		if (s_mpg->vdev.v4l2_dev)
+			num = s_mpg->vdev.num + ivtv_stream_info[type].num_offset;
+	}
+	if (itv->osd_video_pbase && (type == IVTV_DEC_STREAM_TYPE_YUV ||
+				     type == IVTV_DEC_STREAM_TYPE_MPG)) {
+		s->vdev.device_caps |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+		itv->v4l2_cap |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+	}
+	video_set_drvdata(&s->vdev, s);
+
+	/* Register device. First try the desired minor, then any free one. */
+	if (video_register_device_no_warn(&s->vdev, vfl_type, num)) {
+		IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
+				s->name, num);
+		return -ENOMEM;
+	}
+	name = video_device_node_name(&s->vdev);
+
+	switch (vfl_type) {
+	case VFL_TYPE_VIDEO:
+		IVTV_INFO("Registered device %s for %s (%d kB)\n",
+			name, s->name, itv->options.kilobytes[type]);
+		break;
+	case VFL_TYPE_RADIO:
+		IVTV_INFO("Registered device %s for %s\n",
+			name, s->name);
+		break;
+	case VFL_TYPE_VBI:
+		if (itv->options.kilobytes[type])
+			IVTV_INFO("Registered device %s for %s (%d kB)\n",
+				name, s->name, itv->options.kilobytes[type]);
+		else
+			IVTV_INFO("Registered device %s for %s\n",
+				name, s->name);
+		break;
+	}
+	return 0;
+}
+
+/* Register v4l2 devices */
+int ivtv_streams_register(struct ivtv *itv)
+{
+	int type;
+	int err = 0;
+
+	/* Register V4L2 devices */
+	for (type = 0; type < IVTV_MAX_STREAMS; type++)
+		err |= ivtv_reg_dev(itv, type);
+
+	if (err == 0)
+		return 0;
+
+	/* One or more streams could not be initialized. Clean 'em all up. */
+	ivtv_streams_cleanup(itv);
+	return -ENOMEM;
+}
+
+/* Unregister v4l2 devices */
+void ivtv_streams_cleanup(struct ivtv *itv)
+{
+	int type;
+
+	/* Teardown all streams */
+	for (type = 0; type < IVTV_MAX_STREAMS; type++) {
+		struct video_device *vdev = &itv->streams[type].vdev;
+
+		if (vdev->v4l2_dev == NULL)
+			continue;
+
+		video_unregister_device(vdev);
+		ivtv_stream_free(&itv->streams[type]);
+		itv->streams[type].vdev.v4l2_dev = NULL;
+	}
+}
+
+static void ivtv_vbi_setup(struct ivtv *itv)
+{
+	int raw = ivtv_raw_vbi(itv);
+	u32 data[CX2341X_MBOX_MAX_DATA];
+	int lines;
+	int i;
+
+	/* Reset VBI */
+	ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
+
+	/* setup VBI registers */
+	if (raw)
+		v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi);
+	else
+		v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced);
+
+	/* determine number of lines and total number of VBI bytes.
+	   A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
+	   The '- 1' byte is probably an unused U or V byte. Or something...
+	   A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
+	   header, 42 data bytes + checksum (to be confirmed) */
+	if (raw) {
+		lines = itv->vbi.count * 2;
+	} else {
+		lines = itv->is_60hz ? 24 : 38;
+		if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
+			lines += 2;
+	}
+
+	itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
+
+	/* Note: sliced vs raw flag doesn't seem to have any effect
+	   TODO: check mode (0x02) value with older ivtv versions. */
+	data[0] = raw | 0x02 | (0xbd << 8);
+
+	/* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
+	data[1] = 1;
+	/* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
+	data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
+	/* The start/stop codes determine which VBI lines end up in the raw VBI data area.
+	   The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
+	   is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
+	   code. These values for raw VBI are obtained from a driver disassembly. The sliced
+	   start/stop codes was deduced from this, but they do not appear in the driver.
+	   Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
+	   However, I have no idea what these values are for. */
+	if (itv->hw_flags & IVTV_HW_CX25840) {
+		/* Setup VBI for the cx25840 digitizer */
+		if (raw) {
+			data[3] = 0x20602060;
+			data[4] = 0x30703070;
+		} else {
+			data[3] = 0xB0F0B0F0;
+			data[4] = 0xA0E0A0E0;
+		}
+		/* Lines per frame */
+		data[5] = lines;
+		/* bytes per line */
+		data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
+	} else {
+		/* Setup VBI for the saa7115 digitizer */
+		if (raw) {
+			data[3] = 0x25256262;
+			data[4] = 0x387F7F7F;
+		} else {
+			data[3] = 0xABABECEC;
+			data[4] = 0xB6F1F1F1;
+		}
+		/* Lines per frame */
+		data[5] = lines;
+		/* bytes per line */
+		data[6] = itv->vbi.enc_size / lines;
+	}
+
+	IVTV_DEBUG_INFO(
+		"Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
+			data[0], data[1], data[2], data[5], data[6]);
+
+	ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
+
+	/* returns the VBI encoder memory area. */
+	itv->vbi.enc_start = data[2];
+	itv->vbi.fpi = data[0];
+	if (!itv->vbi.fpi)
+		itv->vbi.fpi = 1;
+
+	IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
+		itv->vbi.enc_start, data[1], itv->vbi.fpi);
+
+	/* select VBI lines.
+	   Note that the sliced argument seems to have no effect. */
+	for (i = 2; i <= 24; i++) {
+		int valid;
+
+		if (itv->is_60hz) {
+			valid = i >= 10 && i < 22;
+		} else {
+			valid = i >= 6 && i < 24;
+		}
+		ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
+				valid, 0 , 0, 0);
+		ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
+				valid, 0, 0, 0);
+	}
+
+	/* Remaining VBI questions:
+	   - Is it possible to select particular VBI lines only for inclusion in the MPEG
+	   stream? Currently you can only get the first X lines.
+	   - Is mixed raw and sliced VBI possible?
+	   - What's the meaning of the raw/sliced flag?
+	   - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
+}
+
+int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
+{
+	u32 data[CX2341X_MBOX_MAX_DATA];
+	struct ivtv *itv = s->itv;
+	int captype = 0, subtype = 0;
+	int enable_passthrough = 0;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
+
+	switch (s->type) {
+	case IVTV_ENC_STREAM_TYPE_MPG:
+		captype = 0;
+		subtype = 3;
+
+		/* Stop Passthrough */
+		if (itv->output_mode == OUT_PASSTHROUGH) {
+			ivtv_passthrough_mode(itv, 0);
+			enable_passthrough = 1;
+		}
+		itv->mpg_data_received = itv->vbi_data_inserted = 0;
+		itv->dualwatch_jiffies = jiffies;
+		itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);
+		itv->search_pack_header = 0;
+		break;
+
+	case IVTV_ENC_STREAM_TYPE_YUV:
+		if (itv->output_mode == OUT_PASSTHROUGH) {
+			captype = 2;
+			subtype = 11;	/* video+audio+decoder */
+			break;
+		}
+		captype = 1;
+		subtype = 1;
+		break;
+	case IVTV_ENC_STREAM_TYPE_PCM:
+		captype = 1;
+		subtype = 2;
+		break;
+	case IVTV_ENC_STREAM_TYPE_VBI:
+		captype = 1;
+		subtype = 4;
+
+		itv->vbi.frame = 0;
+		itv->vbi.inserted_frame = 0;
+		memset(itv->vbi.sliced_mpeg_size,
+			0, sizeof(itv->vbi.sliced_mpeg_size));
+		break;
+	default:
+		return -EINVAL;
+	}
+	s->subtype = subtype;
+	s->buffers_stolen = 0;
+
+	/* Clear Streamoff flags in case left from last capture */
+	clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+
+	if (atomic_read(&itv->capturing) == 0) {
+		int digitizer;
+
+		/* Always use frame based mode. Experiments have demonstrated that byte
+		   stream based mode results in dropped frames and corruption. Not often,
+		   but occasionally. Many thanks go to Leonard Orb who spent a lot of
+		   effort and time trying to trace the cause of the drop outs. */
+		/* 1 frame per DMA */
+		/*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
+		ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
+
+		/* Stuff from Windows, we don't know what it is */
+		ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
+		/* According to the docs, this should be correct. However, this is
+		   untested. I don't dare enable this without having tested it.
+		   Only very few old cards actually have this hardware combination.
+		ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
+			((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
+		*/
+		ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
+		ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
+		ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
+		ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
+
+		/* assign placeholder */
+		ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
+			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+
+		if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
+		    digitizer = 0xF1;
+		else if (itv->card->hw_all & IVTV_HW_SAA7114)
+		    digitizer = 0xEF;
+		else /* cx25840 */
+		    digitizer = 0x140;
+
+		ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
+
+		/* Setup VBI */
+		if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
+			ivtv_vbi_setup(itv);
+		}
+
+		/* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
+		ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
+		itv->pgm_info_offset = data[0];
+		itv->pgm_info_num = data[1];
+		itv->pgm_info_write_idx = 0;
+		itv->pgm_info_read_idx = 0;
+
+		IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
+				itv->pgm_info_offset, itv->pgm_info_num);
+
+		/* Setup API for Stream */
+		cx2341x_handler_setup(&itv->cxhdl);
+
+		/* mute if capturing radio */
+		if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
+			ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
+				1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
+	}
+
+	/* Vsync Setup */
+	if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
+		/* event notification (on) */
+		ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
+		ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
+	}
+
+	if (atomic_read(&itv->capturing) == 0) {
+		/* Clear all Pending Interrupts */
+		ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+
+		clear_bit(IVTV_F_I_EOS, &itv->i_flags);
+
+		cx2341x_handler_set_busy(&itv->cxhdl, 1);
+
+		/* Initialize Digitizer for Capture */
+		/* Avoid tinny audio problem - ensure audio clocks are going */
+		v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
+		/* Avoid unpredictable PCI bus hang - disable video clocks */
+		v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
+		ivtv_msleep_timeout(300, 0);
+		ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
+		v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
+	}
+
+	/* begin_capture */
+	if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
+	{
+		IVTV_DEBUG_WARN( "Error starting capture!\n");
+		return -EINVAL;
+	}
+
+	/* Start Passthrough */
+	if (enable_passthrough) {
+		ivtv_passthrough_mode(itv, 1);
+	}
+
+	if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
+		ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
+	else
+		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+
+	/* you're live! sit back and await interrupts :) */
+	atomic_inc(&itv->capturing);
+	return 0;
+}
+EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream);
+
+static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
+{
+	u32 data[CX2341X_MBOX_MAX_DATA];
+	struct ivtv *itv = s->itv;
+	int datatype;
+	u16 width;
+	u16 height;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
+
+	width = itv->cxhdl.width;
+	height = itv->cxhdl.height;
+
+	/* set audio mode to left/stereo  for dual/stereo mode. */
+	ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
+
+	/* set number of internal decoder buffers */
+	ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
+
+	/* prebuffering */
+	ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
+
+	/* extract from user packets */
+	ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
+	itv->vbi.dec_start = data[0];
+
+	IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
+		itv->vbi.dec_start, data[1]);
+
+	/* set decoder source settings */
+	/* Data type: 0 = mpeg from host,
+	   1 = yuv from encoder,
+	   2 = yuv_from_host */
+	switch (s->type) {
+	case IVTV_DEC_STREAM_TYPE_YUV:
+		if (itv->output_mode == OUT_PASSTHROUGH) {
+			datatype = 1;
+		} else {
+			/* Fake size to avoid switching video standard */
+			datatype = 2;
+			width = 720;
+			height = itv->is_out_50hz ? 576 : 480;
+		}
+		IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
+		break;
+	case IVTV_DEC_STREAM_TYPE_MPG:
+	default:
+		datatype = 0;
+		break;
+	}
+	if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
+			width, height, itv->cxhdl.audio_properties)) {
+		IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
+	}
+
+	/* Decoder sometimes dies here, so wait a moment */
+	ivtv_msleep_timeout(10, 0);
+
+	/* Known failure point for firmware, so check */
+	return ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream");
+}
+
+int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
+{
+	struct ivtv *itv = s->itv;
+	int rc;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
+		return 0;	/* already started */
+
+	IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
+
+	rc = ivtv_setup_v4l2_decode_stream(s);
+	if (rc < 0) {
+		clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+		return rc;
+	}
+
+	/* set dma size to 65536 bytes */
+	ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
+
+	/* Clear Streamoff */
+	clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+
+	/* Zero out decoder counters */
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
+	writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
+
+	/* turn on notification of dual/stereo mode change */
+	ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
+
+	/* start playback */
+	ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
+
+	/* Let things settle before we actually start */
+	ivtv_msleep_timeout(10, 0);
+
+	/* Clear the following Interrupt mask bits for decoding */
+	ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
+	IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
+
+	/* you're live! sit back and await interrupts :) */
+	atomic_inc(&itv->decoding);
+	return 0;
+}
+
+void ivtv_stop_all_captures(struct ivtv *itv)
+{
+	int i;
+
+	for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
+		struct ivtv_stream *s = &itv->streams[i];
+
+		if (s->vdev.v4l2_dev == NULL)
+			continue;
+		if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
+			ivtv_stop_v4l2_encode_stream(s, 0);
+		}
+	}
+}
+
+int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
+{
+	struct ivtv *itv = s->itv;
+	DECLARE_WAITQUEUE(wait, current);
+	int cap_type;
+	int stopmode;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	/* This function assumes that you are allowed to stop the capture
+	   and that we are actually capturing */
+
+	IVTV_DEBUG_INFO("Stop Capture\n");
+
+	if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
+		return 0;
+	if (atomic_read(&itv->capturing) == 0)
+		return 0;
+
+	switch (s->type) {
+	case IVTV_ENC_STREAM_TYPE_YUV:
+		cap_type = 1;
+		break;
+	case IVTV_ENC_STREAM_TYPE_PCM:
+		cap_type = 1;
+		break;
+	case IVTV_ENC_STREAM_TYPE_VBI:
+		cap_type = 1;
+		break;
+	case IVTV_ENC_STREAM_TYPE_MPG:
+	default:
+		cap_type = 0;
+		break;
+	}
+
+	/* Stop Capture Mode */
+	if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
+		stopmode = 0;
+	} else {
+		stopmode = 1;
+	}
+
+	/* end_capture */
+	/* when: 0 =  end of GOP  1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
+	ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
+
+	if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
+		if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
+			/* only run these if we're shutting down the last cap */
+			unsigned long duration;
+			unsigned long then = jiffies;
+
+			add_wait_queue(&itv->eos_waitq, &wait);
+
+			set_current_state(TASK_INTERRUPTIBLE);
+
+			/* wait 2s for EOS interrupt */
+			while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
+				time_before(jiffies,
+					    then + msecs_to_jiffies(2000))) {
+				schedule_timeout(msecs_to_jiffies(10));
+			}
+
+			/* To convert jiffies to ms, we must multiply by 1000
+			 * and divide by HZ.  To avoid runtime division, we
+			 * convert this to multiplication by 1000/HZ.
+			 * Since integer division truncates, we get the best
+			 * accuracy if we do a rounding calculation of the constant.
+			 * Think of the case where HZ is 1024.
+			 */
+			duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
+
+			if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
+				IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
+				IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
+			} else {
+				IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
+			}
+			set_current_state(TASK_RUNNING);
+			remove_wait_queue(&itv->eos_waitq, &wait);
+			set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+		}
+
+		/* Handle any pending interrupts */
+		ivtv_msleep_timeout(100, 0);
+	}
+
+	atomic_dec(&itv->capturing);
+
+	/* Clear capture and no-read bits */
+	clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+
+	if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
+		ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
+
+	if (atomic_read(&itv->capturing) > 0) {
+		return 0;
+	}
+
+	cx2341x_handler_set_busy(&itv->cxhdl, 0);
+
+	/* Set the following Interrupt mask bits for capture */
+	ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+	del_timer(&itv->dma_timer);
+
+	/* event notification (off) */
+	if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
+		/* type: 0 = refresh */
+		/* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
+		ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
+		ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
+	}
+
+	/* Raw-passthrough is implied on start. Make sure it's stopped so
+	   the encoder will re-initialize when next started */
+	ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
+
+	wake_up(&s->waitq);
+
+	return 0;
+}
+EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream);
+
+int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
+{
+	static const struct v4l2_event ev = {
+		.type = V4L2_EVENT_EOS,
+	};
+	struct ivtv *itv = s->itv;
+
+	if (s->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
+		return -EINVAL;
+
+	if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
+		return 0;
+
+	IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
+
+	/* Stop Decoder */
+	if (!(flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) || pts) {
+		u32 tmp = 0;
+
+		/* Wait until the decoder is no longer running */
+		if (pts) {
+			ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
+				0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
+		}
+		while (1) {
+			u32 data[CX2341X_MBOX_MAX_DATA];
+			ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
+			if (s->q_full.buffers + s->q_dma.buffers == 0) {
+				if (tmp == data[3])
+					break;
+				tmp = data[3];
+			}
+			if (ivtv_msleep_timeout(100, 1))
+				break;
+		}
+	}
+	ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & V4L2_DEC_CMD_STOP_TO_BLACK, 0, 0);
+
+	/* turn off notification of dual/stereo mode change */
+	ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
+
+	ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
+	del_timer(&itv->dma_timer);
+
+	clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
+	clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+	ivtv_flush_queues(s);
+
+	/* decoder needs time to settle */
+	ivtv_msleep_timeout(40, 0);
+
+	/* decrement decoding */
+	atomic_dec(&itv->decoding);
+
+	set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
+	wake_up(&itv->event_waitq);
+	v4l2_event_queue(&s->vdev, &ev);
+
+	/* wake up wait queues */
+	wake_up(&s->waitq);
+
+	return 0;
+}
+
+int ivtv_passthrough_mode(struct ivtv *itv, int enable)
+{
+	struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
+	struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
+
+	if (yuv_stream->vdev.v4l2_dev == NULL || dec_stream->vdev.v4l2_dev == NULL)
+		return -EINVAL;
+
+	IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
+
+	/* Prevent others from starting/stopping streams while we
+	   initiate/terminate passthrough mode */
+	if (enable) {
+		if (itv->output_mode == OUT_PASSTHROUGH) {
+			return 0;
+		}
+		if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
+			return -EBUSY;
+
+		/* Fully initialize stream, and then unflag init */
+		set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
+		set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
+
+		/* Setup YUV Decoder */
+		ivtv_setup_v4l2_decode_stream(dec_stream);
+
+		/* Start Decoder */
+		ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
+		atomic_inc(&itv->decoding);
+
+		/* Setup capture if not already done */
+		if (atomic_read(&itv->capturing) == 0) {
+			cx2341x_handler_setup(&itv->cxhdl);
+			cx2341x_handler_set_busy(&itv->cxhdl, 1);
+		}
+
+		/* Start Passthrough Mode */
+		ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
+		atomic_inc(&itv->capturing);
+		return 0;
+	}
+
+	if (itv->output_mode != OUT_PASSTHROUGH)
+		return 0;
+
+	/* Stop Passthrough Mode */
+	ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
+	ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
+
+	atomic_dec(&itv->capturing);
+	atomic_dec(&itv->decoding);
+	clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
+	clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
+	itv->output_mode = OUT_NONE;
+	if (atomic_read(&itv->capturing) == 0)
+		cx2341x_handler_set_busy(&itv->cxhdl, 0);
+
+	return 0;
+}