3 files changed, 1791 insertions, 0 deletions

diff --git a/drivers/media/usb/ttusb-budget/Kconfig b/drivers/media/usb/ttusb-budget/Kconfig
new file mode 100644
index 0000000000..af2b8fa497
--- /dev/null
+++ b/drivers/media/usb/ttusb-budget/Kconfig
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config DVB_TTUSB_BUDGET
+	tristate "Technotrend/Hauppauge Nova-USB devices"
+	depends on DVB_CORE && USB && I2C && PCI
+	select DVB_CX22700 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TDA1004X if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_VES1820 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_TDA8083 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_STV0299 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_STV0297 if MEDIA_SUBDRV_AUTOSELECT
+	select DVB_LNBP21 if MEDIA_SUBDRV_AUTOSELECT
+	help
+	  Support for external USB adapters designed by Technotrend and
+	  produced by Hauppauge, shipped under the brand name 'Nova-USB'.
+
+	  These devices don't have a MPEG decoder built in, so you need
+	  an external software decoder to watch TV.
+
+	  Say Y if you own such a device and want to use it.
diff --git a/drivers/media/usb/ttusb-budget/Makefile b/drivers/media/usb/ttusb-budget/Makefile
new file mode 100644
index 0000000000..09e42bf312
--- /dev/null
+++ b/drivers/media/usb/ttusb-budget/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_DVB_TTUSB_BUDGET) += dvb-ttusb-budget.o
+
+ccflags-y += -I $(srctree)/drivers/media/dvb-frontends
diff --git a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
new file mode 100644
index 0000000000..9e016b71aa
--- /dev/null
+++ b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
@@ -0,0 +1,1768 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * TTUSB DVB driver
+ *
+ * Copyright (c) 2002 Holger Waechtler <holger@convergence.de>
+ * Copyright (c) 2003 Felix Domke <tmbinc@elitedvb.net>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/delay.h>
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/jiffies.h>
+#include <linux/mutex.h>
+#include <linux/firmware.h>
+
+#include <media/dvb_frontend.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include "ves1820.h"
+#include "cx22700.h"
+#include "tda1004x.h"
+#include "stv0299.h"
+#include "tda8083.h"
+#include "stv0297.h"
+#include "lnbp21.h"
+
+#include <linux/dvb/frontend.h>
+#include <linux/dvb/dmx.h>
+#include <linux/pci.h>
+
+/*
+  TTUSB_HWSECTIONS:
+    the DSP supports filtering in hardware, however, since the "muxstream"
+    is a bit braindead (no matching channel masks or no matching filter mask),
+    we won't support this - yet. it doesn't event support negative filters,
+    so the best way is maybe to keep TTUSB_HWSECTIONS undef'd and just
+    parse TS data. USB bandwidth will be a problem when having large
+    datastreams, especially for dvb-net, but hey, that's not my problem.
+
+  TTUSB_DISEQC, TTUSB_TONE:
+    let the STC do the diseqc/tone stuff. this isn't supported at least with
+    my TTUSB, so let it undef'd unless you want to implement another
+    frontend. never tested.
+
+  debug:
+    define it to > 3 for really hardcore debugging. you probably don't want
+    this unless the device doesn't load at all. > 2 for bandwidth statistics.
+*/
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+#define dprintk(fmt, arg...) do {					\
+	if (debug)							\
+		printk(KERN_DEBUG pr_fmt("%s: " fmt),			\
+		       __func__, ##arg);				\
+} while (0)
+
+
+#define ISO_BUF_COUNT      4
+#define FRAMES_PER_ISO_BUF 4
+#define ISO_FRAME_SIZE     912
+#define TTUSB_MAXCHANNEL   32
+#ifdef TTUSB_HWSECTIONS
+#define TTUSB_MAXFILTER    16	/* ??? */
+#endif
+
+#define TTUSB_REV_2_2	0x22
+#define TTUSB_BUDGET_NAME "ttusb_stc_fw"
+
+#define MAX_SEND	0x28
+#define MAX_RCV		0x20
+
+/*
+ *  since we're casting (struct ttusb*) <-> (struct dvb_demux*) around
+ *  the dvb_demux field must be the first in struct!!
+ */
+struct ttusb {
+	struct dvb_demux dvb_demux;
+	struct dmxdev dmxdev;
+	struct dvb_net dvbnet;
+
+	/* and one for USB access. */
+	struct mutex semi2c;
+	struct mutex semusb;
+
+	struct dvb_adapter adapter;
+	struct usb_device *dev;
+
+	struct i2c_adapter i2c_adap;
+
+	int disconnecting;
+	int iso_streaming;
+
+	unsigned int bulk_out_pipe;
+	unsigned int bulk_in_pipe;
+	unsigned int isoc_in_pipe;
+
+	void *iso_buffer;
+
+	struct urb *iso_urb[ISO_BUF_COUNT];
+
+	int running_feed_count;
+	int last_channel;
+	int last_filter;
+
+	u8 c;			/* transaction counter, wraps around...  */
+	enum fe_sec_tone_mode tone;
+	enum fe_sec_voltage voltage;
+
+	int mux_state;		// 0..2 - MuxSyncWord, 3 - nMuxPacks,    4 - muxpack
+	u8 mux_npacks;
+	u8 muxpack[256 + 8];
+	int muxpack_ptr, muxpack_len;
+
+	int insync;
+
+	int cc;			/* MuxCounter - will increment on EVERY MUX PACKET */
+	/* (including stuffing. yes. really.) */
+
+	u8 send_buf[MAX_SEND];
+	u8 last_result[MAX_RCV];
+
+	int revision;
+
+	struct dvb_frontend* fe;
+};
+
+static int ttusb_cmd(struct ttusb *ttusb, u8 *data, int len, int len_result)
+{
+	int actual_len;
+	int err;
+
+	if (mutex_lock_interruptible(&ttusb->semusb) < 0)
+		return -EAGAIN;
+
+	if (debug >= 3)
+		dprintk("> %*ph\n", len, data);
+
+	memcpy(data, ttusb->send_buf, len);
+
+	err = usb_bulk_msg(ttusb->dev, ttusb->bulk_out_pipe,
+			   ttusb->send_buf, len, &actual_len, 1000);
+	if (err != 0) {
+		dprintk("usb_bulk_msg(send) failed, err == %i!\n", err);
+		goto err;
+	}
+	if (actual_len != len) {
+		err = -EIO;
+		dprintk("only wrote %d of %d bytes\n",
+			actual_len, len);
+		goto err;
+	}
+
+	err = usb_bulk_msg(ttusb->dev, ttusb->bulk_in_pipe,
+			   ttusb->last_result, MAX_RCV, &actual_len, 1000);
+
+	if (err != 0) {
+		pr_err("cmd xter failed, receive error %d\n", err);
+		goto err;
+	}
+
+	if (debug >= 3) {
+		actual_len = ttusb->last_result[3] + 4;
+		dprintk("< %*ph\n", actual_len, ttusb->last_result);
+	}
+
+	if (len_result)
+		memcpy(ttusb->send_buf, ttusb->last_result, len_result);
+
+err:
+	mutex_unlock(&ttusb->semusb);
+	return err;
+}
+
+static int ttusb_i2c_msg(struct ttusb *ttusb,
+		  u8 addr, u8 * snd_buf, u8 snd_len, u8 * rcv_buf,
+		  u8 rcv_len)
+{
+	u8 b[MAX_SEND];
+	u8 id = ++ttusb->c;
+	int i, err;
+
+	if (snd_len > MAX_SEND - 7 || rcv_len > MAX_RCV - 7)
+		return -EINVAL;
+
+	b[0] = 0xaa;
+	b[1] = id;
+	b[2] = 0x31;
+	b[3] = snd_len + 3;
+	b[4] = addr << 1;
+	b[5] = snd_len;
+	b[6] = rcv_len;
+
+	for (i = 0; i < snd_len; i++)
+		b[7 + i] = snd_buf[i];
+
+	err = ttusb_cmd(ttusb, b, snd_len + 7, MAX_RCV);
+
+	if (err)
+		return -EREMOTEIO;
+
+	/* check if the i2c transaction was successful */
+	if ((snd_len != b[5]) || (rcv_len != b[6])) return -EREMOTEIO;
+
+	if (rcv_len > 0) {
+
+		if (err || b[0] != 0x55 || b[1] != id) {
+			dprintk("usb_bulk_msg(recv) failed, err == %i, id == %02x, b == ",
+				err, id);
+			return -EREMOTEIO;
+		}
+
+		for (i = 0; i < rcv_len; i++)
+			rcv_buf[i] = b[7 + i];
+	}
+
+	return rcv_len;
+}
+
+static int master_xfer(struct i2c_adapter* adapter, struct i2c_msg *msg, int num)
+{
+	struct ttusb *ttusb = i2c_get_adapdata(adapter);
+	int i = 0;
+	int inc;
+
+	if (mutex_lock_interruptible(&ttusb->semi2c) < 0)
+		return -EAGAIN;
+
+	while (i < num) {
+		u8 addr, snd_len, rcv_len, *snd_buf, *rcv_buf;
+		int err;
+
+		if (num > i + 1 && (msg[i + 1].flags & I2C_M_RD)) {
+			addr = msg[i].addr;
+			snd_buf = msg[i].buf;
+			snd_len = msg[i].len;
+			rcv_buf = msg[i + 1].buf;
+			rcv_len = msg[i + 1].len;
+			inc = 2;
+		} else {
+			addr = msg[i].addr;
+			snd_buf = msg[i].buf;
+			snd_len = msg[i].len;
+			rcv_buf = NULL;
+			rcv_len = 0;
+			inc = 1;
+		}
+
+		err = ttusb_i2c_msg(ttusb, addr,
+				    snd_buf, snd_len, rcv_buf, rcv_len);
+
+		if (err < rcv_len) {
+			dprintk("i == %i\n", i);
+			break;
+		}
+
+		i += inc;
+	}
+
+	mutex_unlock(&ttusb->semi2c);
+	return i;
+}
+
+static int ttusb_boot_dsp(struct ttusb *ttusb)
+{
+	const struct firmware *fw;
+	int i, err;
+	u8 b[40];
+
+	err = request_firmware(&fw, "ttusb-budget/dspbootcode.bin",
+			       &ttusb->dev->dev);
+	if (err) {
+		pr_err("failed to request firmware\n");
+		return err;
+	}
+
+	/* BootBlock */
+	b[0] = 0xaa;
+	b[2] = 0x13;
+	b[3] = 28;
+
+	/* upload dsp code in 32 byte steps (36 didn't work for me ...) */
+	/* 32 is max packet size, no messages should be split. */
+	for (i = 0; i < fw->size; i += 28) {
+		memcpy(&b[4], &fw->data[i], 28);
+
+		b[1] = ++ttusb->c;
+
+		err = ttusb_cmd(ttusb, b, 32, 0);
+		if (err)
+			goto done;
+	}
+
+	/* last block ... */
+	b[1] = ++ttusb->c;
+	b[2] = 0x13;
+	b[3] = 0;
+
+	err = ttusb_cmd(ttusb, b, 4, 0);
+	if (err)
+		goto done;
+
+	/* BootEnd */
+	b[1] = ++ttusb->c;
+	b[2] = 0x14;
+	b[3] = 0;
+
+	err = ttusb_cmd(ttusb, b, 4, 0);
+
+      done:
+	release_firmware(fw);
+	if (err) {
+		dprintk("usb_bulk_msg() failed, return value %i!\n", err);
+	}
+
+	return err;
+}
+
+static int ttusb_set_channel(struct ttusb *ttusb, int chan_id, int filter_type,
+		      int pid)
+{
+	int err;
+	/* SetChannel */
+	u8 b[] = { 0xaa, ++ttusb->c, 0x22, 4, chan_id, filter_type,
+		(pid >> 8) & 0xff, pid & 0xff
+	};
+
+	err = ttusb_cmd(ttusb, b, sizeof(b), 0);
+	return err;
+}
+
+static int ttusb_del_channel(struct ttusb *ttusb, int channel_id)
+{
+	int err;
+	/* DelChannel */
+	u8 b[] = { 0xaa, ++ttusb->c, 0x23, 1, channel_id };
+
+	err = ttusb_cmd(ttusb, b, sizeof(b), 0);
+	return err;
+}
+
+#ifdef TTUSB_HWSECTIONS
+static int ttusb_set_filter(struct ttusb *ttusb, int filter_id,
+		     int associated_chan, u8 filter[8], u8 mask[8])
+{
+	int err;
+	/* SetFilter */
+	u8 b[] = { 0xaa, 0, 0x24, 0x1a, filter_id, associated_chan,
+		filter[0], filter[1], filter[2], filter[3],
+		filter[4], filter[5], filter[6], filter[7],
+		filter[8], filter[9], filter[10], filter[11],
+		mask[0], mask[1], mask[2], mask[3],
+		mask[4], mask[5], mask[6], mask[7],
+		mask[8], mask[9], mask[10], mask[11]
+	};
+
+	err = ttusb_cmd(ttusb, b, sizeof(b), 0);
+	return err;
+}
+
+static int ttusb_del_filter(struct ttusb *ttusb, int filter_id)
+{
+	int err;
+	/* DelFilter */
+	u8 b[] = { 0xaa, ++ttusb->c, 0x25, 1, filter_id };
+
+	err = ttusb_cmd(ttusb, b, sizeof(b), 0);
+	return err;
+}
+#endif
+
+static int ttusb_init_controller(struct ttusb *ttusb)
+{
+	u8 b0[] = { 0xaa, ++ttusb->c, 0x15, 1, 0 };
+	u8 b1[] = { 0xaa, ++ttusb->c, 0x15, 1, 1 };
+	u8 b2[] = { 0xaa, ++ttusb->c, 0x32, 1, 0 };
+	/* i2c write read: 5 bytes, addr 0x10, 0x02 bytes write, 1 bytes read. */
+	u8 b3[] =
+	    { 0xaa, ++ttusb->c, 0x31, 5, 0x10, 0x02, 0x01, 0x00, 0x1e };
+
+	u8 get_version[] = { 0xaa, ++ttusb->c, 0x17, 5, 0, 0, 0, 0, 0 };
+	u8 get_dsp_version[0x20] =
+	    { 0xaa, ++ttusb->c, 0x26, 28, 0, 0, 0, 0, 0 };
+	int err;
+
+	/* reset board */
+	if ((err = ttusb_cmd(ttusb, b0, sizeof(b0), 0)))
+		return err;
+
+	/* reset board (again?) */
+	if ((err = ttusb_cmd(ttusb, b1, sizeof(b1), 0)))
+		return err;
+
+	ttusb_boot_dsp(ttusb);
+
+	/* set i2c bit rate */
+	if ((err = ttusb_cmd(ttusb, b2, sizeof(b2), 0)))
+		return err;
+
+	if ((err = ttusb_cmd(ttusb, b3, sizeof(b3), 0)))
+		return err;
+
+	if ((err = ttusb_cmd(ttusb, get_version,
+			     sizeof(get_version), sizeof(get_version))))
+		return err;
+
+	dprintk("stc-version: %c%c%c%c%c\n", get_version[4], get_version[5],
+		get_version[6], get_version[7], get_version[8]);
+
+	if (memcmp(get_version + 4, "V 0.0", 5) &&
+	    memcmp(get_version + 4, "V 1.1", 5) &&
+	    memcmp(get_version + 4, "V 2.1", 5) &&
+	    memcmp(get_version + 4, "V 2.2", 5)) {
+		pr_err("unknown STC version %c%c%c%c%c, please report!\n",
+		       get_version[4], get_version[5],
+		       get_version[6], get_version[7], get_version[8]);
+	}
+
+	ttusb->revision = ((get_version[6] - '0') << 4) |
+			   (get_version[8] - '0');
+
+	err =
+	    ttusb_cmd(ttusb, get_dsp_version,
+		      sizeof(get_dsp_version), sizeof(get_dsp_version));
+	if (err)
+		return err;
+
+	pr_info("dsp-version: %c%c%c\n",
+	       get_dsp_version[4], get_dsp_version[5], get_dsp_version[6]);
+	return 0;
+}
+
+#ifdef TTUSB_DISEQC
+static int ttusb_send_diseqc(struct dvb_frontend* fe,
+			     const struct dvb_diseqc_master_cmd *cmd)
+{
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	u8 b[12] = { 0xaa, ++ttusb->c, 0x18 };
+
+	int err;
+
+	b[3] = 4 + 2 + cmd->msg_len;
+	b[4] = 0xFF;		/* send diseqc master, not burst */
+	b[5] = cmd->msg_len;
+
+	memcpy(b + 5, cmd->msg, cmd->msg_len);
+
+	/* Diseqc */
+	if ((err = ttusb_cmd(ttusb, b, 4 + b[3], 0))) {
+		dprintk("usb_bulk_msg() failed, return value %i!\n", err);
+	}
+
+	return err;
+}
+#endif
+
+static int ttusb_update_lnb(struct ttusb *ttusb)
+{
+	u8 b[] = { 0xaa, ++ttusb->c, 0x16, 5, /*power: */ 1,
+		ttusb->voltage == SEC_VOLTAGE_18 ? 0 : 1,
+		ttusb->tone == SEC_TONE_ON ? 1 : 0, 1, 1
+	};
+	int err;
+
+	/* SetLNB */
+	if ((err = ttusb_cmd(ttusb, b, sizeof(b), 0))) {
+		dprintk("usb_bulk_msg() failed, return value %i!\n", err);
+	}
+
+	return err;
+}
+
+static int ttusb_set_voltage(struct dvb_frontend *fe,
+			     enum fe_sec_voltage voltage)
+{
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+
+	ttusb->voltage = voltage;
+	return ttusb_update_lnb(ttusb);
+}
+
+#ifdef TTUSB_TONE
+static int ttusb_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)
+{
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+
+	ttusb->tone = tone;
+	return ttusb_update_lnb(ttusb);
+}
+#endif
+
+
+#if 0
+static void ttusb_set_led_freq(struct ttusb *ttusb, u8 freq)
+{
+	u8 b[] = { 0xaa, ++ttusb->c, 0x19, 1, freq };
+	int err, actual_len;
+
+	err = ttusb_cmd(ttusb, b, sizeof(b), 0);
+	if (err) {
+		dprintk("usb_bulk_msg() failed, return value %i!\n", err);
+	}
+}
+#endif
+
+/*****************************************************************************/
+
+#ifdef TTUSB_HWSECTIONS
+static void ttusb_handle_ts_data(struct ttusb_channel *channel,
+				 const u8 * data, int len);
+static void ttusb_handle_sec_data(struct ttusb_channel *channel,
+				  const u8 * data, int len);
+#endif
+
+static int numpkt, numts, numstuff, numsec, numinvalid;
+static unsigned long lastj;
+
+static void ttusb_process_muxpack(struct ttusb *ttusb, const u8 * muxpack,
+			   int len)
+{
+	u16 csum = 0, cc;
+	int i;
+
+	if (len < 4 || len & 0x1) {
+		pr_warn("muxpack has invalid len %d\n", len);
+		numinvalid++;
+		return;
+	}
+
+	for (i = 0; i < len; i += 2)
+		csum ^= le16_to_cpup((__le16 *) (muxpack + i));
+	if (csum) {
+		pr_warn("muxpack with incorrect checksum, ignoring\n");
+		numinvalid++;
+		return;
+	}
+
+	cc = (muxpack[len - 4] << 8) | muxpack[len - 3];
+	cc &= 0x7FFF;
+	if ((cc != ttusb->cc) && (ttusb->cc != -1))
+		pr_warn("cc discontinuity (%d frames missing)\n",
+			(cc - ttusb->cc) & 0x7FFF);
+	ttusb->cc = (cc + 1) & 0x7FFF;
+	if (muxpack[0] & 0x80) {
+#ifdef TTUSB_HWSECTIONS
+		/* section data */
+		int pusi = muxpack[0] & 0x40;
+		int channel = muxpack[0] & 0x1F;
+		int payload = muxpack[1];
+		const u8 *data = muxpack + 2;
+		/* check offset flag */
+		if (muxpack[0] & 0x20)
+			data++;
+
+		ttusb_handle_sec_data(ttusb->channel + channel, data,
+				      payload);
+		data += payload;
+
+		if ((!!(ttusb->muxpack[0] & 0x20)) ^
+		    !!(ttusb->muxpack[1] & 1))
+			data++;
+#warning TODO: pusi
+		dprintk("cc: %04x\n", (data[0] << 8) | data[1]);
+#endif
+		numsec++;
+	} else if (muxpack[0] == 0x47) {
+#ifdef TTUSB_HWSECTIONS
+		/* we have TS data here! */
+		int pid = ((muxpack[1] & 0x0F) << 8) | muxpack[2];
+		int channel;
+		for (channel = 0; channel < TTUSB_MAXCHANNEL; ++channel)
+			if (ttusb->channel[channel].active
+			    && (pid == ttusb->channel[channel].pid))
+				ttusb_handle_ts_data(ttusb->channel +
+						     channel, muxpack,
+						     188);
+#endif
+		numts++;
+		dvb_dmx_swfilter_packets(&ttusb->dvb_demux, muxpack, 1);
+	} else if (muxpack[0] != 0) {
+		numinvalid++;
+		pr_err("illegal muxpack type %02x\n", muxpack[0]);
+	} else
+		numstuff++;
+}
+
+static void ttusb_process_frame(struct ttusb *ttusb, u8 * data, int len)
+{
+	int maxwork = 1024;
+	while (len) {
+		if (!(maxwork--)) {
+			pr_err("too much work\n");
+			break;
+		}
+
+		switch (ttusb->mux_state) {
+		case 0:
+		case 1:
+		case 2:
+			len--;
+			if (*data++ == 0xAA)
+				++ttusb->mux_state;
+			else {
+				ttusb->mux_state = 0;
+				if (ttusb->insync) {
+					pr_info("lost sync.\n");
+					ttusb->insync = 0;
+				}
+			}
+			break;
+		case 3:
+			ttusb->insync = 1;
+			len--;
+			ttusb->mux_npacks = *data++;
+			++ttusb->mux_state;
+			ttusb->muxpack_ptr = 0;
+			/* maximum bytes, until we know the length */
+			ttusb->muxpack_len = 2;
+			break;
+		case 4:
+			{
+				int avail;
+				avail = len;
+				if (avail >
+				    (ttusb->muxpack_len -
+				     ttusb->muxpack_ptr))
+					avail =
+					    ttusb->muxpack_len -
+					    ttusb->muxpack_ptr;
+				memcpy(ttusb->muxpack + ttusb->muxpack_ptr,
+				       data, avail);
+				ttusb->muxpack_ptr += avail;
+				BUG_ON(ttusb->muxpack_ptr > 264);
+				data += avail;
+				len -= avail;
+				/* determine length */
+				if (ttusb->muxpack_ptr == 2) {
+					if (ttusb->muxpack[0] & 0x80) {
+						ttusb->muxpack_len =
+						    ttusb->muxpack[1] + 2;
+						if (ttusb->
+						    muxpack[0] & 0x20)
+							ttusb->
+							    muxpack_len++;
+						if ((!!
+						     (ttusb->
+						      muxpack[0] & 0x20)) ^
+						    !!(ttusb->
+						       muxpack[1] & 1))
+							ttusb->
+							    muxpack_len++;
+						ttusb->muxpack_len += 4;
+					} else if (ttusb->muxpack[0] ==
+						   0x47)
+						ttusb->muxpack_len =
+						    188 + 4;
+					else if (ttusb->muxpack[0] == 0x00)
+						ttusb->muxpack_len =
+						    ttusb->muxpack[1] + 2 +
+						    4;
+					else {
+						dprintk("invalid state: first byte is %x\n",
+							ttusb->muxpack[0]);
+						ttusb->mux_state = 0;
+					}
+				}
+
+			/*
+			 * if length is valid and we reached the end:
+			 * goto next muxpack
+			 */
+				if ((ttusb->muxpack_ptr >= 2) &&
+				    (ttusb->muxpack_ptr ==
+				     ttusb->muxpack_len)) {
+					ttusb_process_muxpack(ttusb,
+							      ttusb->
+							      muxpack,
+							      ttusb->
+							      muxpack_ptr);
+					ttusb->muxpack_ptr = 0;
+					/* maximum bytes, until we know the length */
+					ttusb->muxpack_len = 2;
+
+				/*
+				 * no muxpacks left?
+				 * return to search-sync state
+				 */
+					if (!ttusb->mux_npacks--) {
+						ttusb->mux_state = 0;
+						break;
+					}
+				}
+				break;
+			}
+		default:
+			BUG();
+			break;
+		}
+	}
+}
+
+static void ttusb_iso_irq(struct urb *urb)
+{
+	struct ttusb *ttusb = urb->context;
+	struct usb_iso_packet_descriptor *d;
+	u8 *data;
+	int len, i;
+
+	if (!ttusb->iso_streaming)
+		return;
+
+	if (!urb->status) {
+		for (i = 0; i < urb->number_of_packets; ++i) {
+			numpkt++;
+			if (time_after_eq(jiffies, lastj + HZ)) {
+				dprintk("frames/s: %lu (ts: %d, stuff %d, sec: %d, invalid: %d, all: %d)\n",
+					numpkt * HZ / (jiffies - lastj),
+					numts, numstuff, numsec, numinvalid,
+					numts + numstuff + numsec + numinvalid);
+				numts = numstuff = numsec = numinvalid = 0;
+				lastj = jiffies;
+				numpkt = 0;
+			}
+			d = &urb->iso_frame_desc[i];
+			data = urb->transfer_buffer + d->offset;
+			len = d->actual_length;
+			d->actual_length = 0;
+			d->status = 0;
+			ttusb_process_frame(ttusb, data, len);
+		}
+	}
+	usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void ttusb_free_iso_urbs(struct ttusb *ttusb)
+{
+	int i;
+
+	for (i = 0; i < ISO_BUF_COUNT; i++)
+		usb_free_urb(ttusb->iso_urb[i]);
+	kfree(ttusb->iso_buffer);
+}
+
+static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
+{
+	int i;
+
+	ttusb->iso_buffer = kcalloc(FRAMES_PER_ISO_BUF * ISO_BUF_COUNT,
+			ISO_FRAME_SIZE, GFP_KERNEL);
+	if (!ttusb->iso_buffer)
+		return -ENOMEM;
+
+	for (i = 0; i < ISO_BUF_COUNT; i++) {
+		struct urb *urb;
+
+		if (!
+		    (urb =
+		     usb_alloc_urb(FRAMES_PER_ISO_BUF, GFP_ATOMIC))) {
+			ttusb_free_iso_urbs(ttusb);
+			return -ENOMEM;
+		}
+
+		ttusb->iso_urb[i] = urb;
+	}
+
+	return 0;
+}
+
+static void ttusb_stop_iso_xfer(struct ttusb *ttusb)
+{
+	int i;
+
+	for (i = 0; i < ISO_BUF_COUNT; i++)
+		usb_kill_urb(ttusb->iso_urb[i]);
+
+	ttusb->iso_streaming = 0;
+}
+
+static int ttusb_start_iso_xfer(struct ttusb *ttusb)
+{
+	int i, j, err, buffer_offset = 0;
+
+	if (ttusb->iso_streaming) {
+		pr_err("iso xfer already running!\n");
+		return 0;
+	}
+
+	ttusb->cc = -1;
+	ttusb->insync = 0;
+	ttusb->mux_state = 0;
+
+	for (i = 0; i < ISO_BUF_COUNT; i++) {
+		int frame_offset = 0;
+		struct urb *urb = ttusb->iso_urb[i];
+
+		urb->dev = ttusb->dev;
+		urb->context = ttusb;
+		urb->complete = ttusb_iso_irq;
+		urb->pipe = ttusb->isoc_in_pipe;
+		urb->transfer_flags = URB_ISO_ASAP;
+		urb->interval = 1;
+		urb->number_of_packets = FRAMES_PER_ISO_BUF;
+		urb->transfer_buffer_length =
+		    ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF;
+		urb->transfer_buffer = ttusb->iso_buffer + buffer_offset;
+		buffer_offset += ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF;
+
+		for (j = 0; j < FRAMES_PER_ISO_BUF; j++) {
+			urb->iso_frame_desc[j].offset = frame_offset;
+			urb->iso_frame_desc[j].length = ISO_FRAME_SIZE;
+			frame_offset += ISO_FRAME_SIZE;
+		}
+	}
+
+	for (i = 0; i < ISO_BUF_COUNT; i++) {
+		if ((err = usb_submit_urb(ttusb->iso_urb[i], GFP_ATOMIC))) {
+			ttusb_stop_iso_xfer(ttusb);
+			pr_err("failed urb submission (%i: err = %i)!\n",
+			       i, err);
+			return err;
+		}
+	}
+
+	ttusb->iso_streaming = 1;
+
+	return 0;
+}
+
+#ifdef TTUSB_HWSECTIONS
+static void ttusb_handle_ts_data(struct dvb_demux_feed *dvbdmxfeed, const u8 * data,
+			  int len)
+{
+	dvbdmxfeed->cb.ts(data, len, 0, 0, &dvbdmxfeed->feed.ts, 0);
+}
+
+static void ttusb_handle_sec_data(struct dvb_demux_feed *dvbdmxfeed, const u8 * data,
+			   int len)
+{
+//      struct dvb_demux_feed *dvbdmxfeed = channel->dvbdmxfeed;
+#error TODO: handle ugly stuff
+//      dvbdmxfeed->cb.sec(data, len, 0, 0, &dvbdmxfeed->feed.sec, 0);
+}
+#endif
+
+static int ttusb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct ttusb *ttusb = (struct ttusb *) dvbdmxfeed->demux;
+	int feed_type = 1;
+
+	dprintk("ttusb_start_feed\n");
+
+	switch (dvbdmxfeed->type) {
+	case DMX_TYPE_TS:
+		break;
+	case DMX_TYPE_SEC:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (dvbdmxfeed->type == DMX_TYPE_TS) {
+		switch (dvbdmxfeed->pes_type) {
+		case DMX_PES_VIDEO:
+		case DMX_PES_AUDIO:
+		case DMX_PES_TELETEXT:
+		case DMX_PES_PCR:
+		case DMX_PES_OTHER:
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+#ifdef TTUSB_HWSECTIONS
+#error TODO: allocate filters
+	if (dvbdmxfeed->type == DMX_TYPE_TS) {
+		feed_type = 1;
+	} else if (dvbdmxfeed->type == DMX_TYPE_SEC) {
+		feed_type = 2;
+	}
+#endif
+
+	ttusb_set_channel(ttusb, dvbdmxfeed->index, feed_type, dvbdmxfeed->pid);
+
+	if (0 == ttusb->running_feed_count++)
+		ttusb_start_iso_xfer(ttusb);
+
+	return 0;
+}
+
+static int ttusb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct ttusb *ttusb = (struct ttusb *) dvbdmxfeed->demux;
+
+	ttusb_del_channel(ttusb, dvbdmxfeed->index);
+
+	if (--ttusb->running_feed_count == 0)
+		ttusb_stop_iso_xfer(ttusb);
+
+	return 0;
+}
+
+static int ttusb_setup_interfaces(struct ttusb *ttusb)
+{
+	usb_set_interface(ttusb->dev, 1, 1);
+
+	ttusb->bulk_out_pipe = usb_sndbulkpipe(ttusb->dev, 1);
+	ttusb->bulk_in_pipe = usb_rcvbulkpipe(ttusb->dev, 1);
+	ttusb->isoc_in_pipe = usb_rcvisocpipe(ttusb->dev, 2);
+
+	return 0;
+}
+
+#if 0
+static u8 stc_firmware[8192];
+
+static int stc_open(struct inode *inode, struct file *file)
+{
+	struct ttusb *ttusb = file->private_data;
+	int addr;
+
+	for (addr = 0; addr < 8192; addr += 16) {
+		u8 snd_buf[2] = { addr >> 8, addr & 0xFF };
+		ttusb_i2c_msg(ttusb, 0x50, snd_buf, 2, stc_firmware + addr,
+			      16);
+	}
+
+	return 0;
+}
+
+static ssize_t stc_read(struct file *file, char *buf, size_t count,
+		 loff_t *offset)
+{
+	return simple_read_from_buffer(buf, count, offset, stc_firmware, 8192);
+}
+
+static int stc_release(struct inode *inode, struct file *file)
+{
+	return 0;
+}
+
+static const struct file_operations stc_fops = {
+	.owner = THIS_MODULE,
+	.read = stc_read,
+	.open = stc_open,
+	.release = stc_release,
+};
+#endif
+
+static u32 functionality(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+
+
+static int alps_tdmb7_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	u8 data[4];
+	struct i2c_msg msg = {.addr=0x61, .flags=0, .buf=data, .len=sizeof(data) };
+	u32 div;
+
+	div = (p->frequency + 36166667) / 166667;
+
+	data[0] = (div >> 8) & 0x7f;
+	data[1] = div & 0xff;
+	data[2] = ((div >> 10) & 0x60) | 0x85;
+	data[3] = p->frequency < 592000000 ? 0x40 : 0x80;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1) return -EIO;
+	return 0;
+}
+
+static struct cx22700_config alps_tdmb7_config = {
+	.demod_address = 0x43,
+};
+
+
+
+
+
+static int philips_tdm1316l_tuner_init(struct dvb_frontend* fe)
+{
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	static u8 td1316_init[] = { 0x0b, 0xf5, 0x85, 0xab };
+	static u8 disable_mc44BC374c[] = { 0x1d, 0x74, 0xa0, 0x68 };
+	struct i2c_msg tuner_msg = { .addr=0x60, .flags=0, .buf=td1316_init, .len=sizeof(td1316_init) };
+
+	// setup PLL configuration
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) return -EIO;
+	msleep(1);
+
+	// disable the mc44BC374c (do not check for errors)
+	tuner_msg.addr = 0x65;
+	tuner_msg.buf = disable_mc44BC374c;
+	tuner_msg.len = sizeof(disable_mc44BC374c);
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
+		i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1);
+	}
+
+	return 0;
+}
+
+static int philips_tdm1316l_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	u8 tuner_buf[4];
+	struct i2c_msg tuner_msg = {.addr=0x60, .flags=0, .buf=tuner_buf, .len=sizeof(tuner_buf) };
+	int tuner_frequency = 0;
+	u8 band, cp, filter;
+
+	// determine charge pump
+	tuner_frequency = p->frequency + 36130000;
+	if (tuner_frequency < 87000000) return -EINVAL;
+	else if (tuner_frequency < 130000000) cp = 3;
+	else if (tuner_frequency < 160000000) cp = 5;
+	else if (tuner_frequency < 200000000) cp = 6;
+	else if (tuner_frequency < 290000000) cp = 3;
+	else if (tuner_frequency < 420000000) cp = 5;
+	else if (tuner_frequency < 480000000) cp = 6;
+	else if (tuner_frequency < 620000000) cp = 3;
+	else if (tuner_frequency < 830000000) cp = 5;
+	else if (tuner_frequency < 895000000) cp = 7;
+	else return -EINVAL;
+
+	// determine band
+	if (p->frequency < 49000000)
+		return -EINVAL;
+	else if (p->frequency < 159000000)
+		band = 1;
+	else if (p->frequency < 444000000)
+		band = 2;
+	else if (p->frequency < 861000000)
+		band = 4;
+	else return -EINVAL;
+
+	// setup PLL filter
+	switch (p->bandwidth_hz) {
+	case 6000000:
+		tda1004x_writereg(fe, 0x0C, 0);
+		filter = 0;
+		break;
+
+	case 7000000:
+		tda1004x_writereg(fe, 0x0C, 0);
+		filter = 0;
+		break;
+
+	case 8000000:
+		tda1004x_writereg(fe, 0x0C, 0xFF);
+		filter = 1;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	// calculate divisor
+	// ((36130000+((1000000/6)/2)) + Finput)/(1000000/6)
+	tuner_frequency = (((p->frequency / 1000) * 6) + 217280) / 1000;
+
+	// setup tuner buffer
+	tuner_buf[0] = tuner_frequency >> 8;
+	tuner_buf[1] = tuner_frequency & 0xff;
+	tuner_buf[2] = 0xca;
+	tuner_buf[3] = (cp << 5) | (filter << 3) | band;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1)
+		return -EIO;
+
+	msleep(1);
+	return 0;
+}
+
+static int philips_tdm1316l_request_firmware(struct dvb_frontend* fe, const struct firmware **fw, char* name)
+{
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+
+	return request_firmware(fw, name, &ttusb->dev->dev);
+}
+
+static struct tda1004x_config philips_tdm1316l_config = {
+
+	.demod_address = 0x8,
+	.invert = 1,
+	.invert_oclk = 0,
+	.request_firmware = philips_tdm1316l_request_firmware,
+};
+
+static u8 alps_bsbe1_inittab[] = {
+	0x01, 0x15,
+	0x02, 0x30,
+	0x03, 0x00,
+	0x04, 0x7d,             /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
+	0x05, 0x35,             /* I2CT = 0, SCLT = 1, SDAT = 1 */
+	0x06, 0x40,             /* DAC not used, set to high impendance mode */
+	0x07, 0x00,             /* DAC LSB */
+	0x08, 0x40,             /* DiSEqC off, LNB power on OP2/LOCK pin on */
+	0x09, 0x00,             /* FIFO */
+	0x0c, 0x51,             /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
+	0x0d, 0x82,             /* DC offset compensation = ON, beta_agc1 = 2 */
+	0x0e, 0x23,             /* alpha_tmg = 2, beta_tmg = 3 */
+	0x10, 0x3f,             // AGC2  0x3d
+	0x11, 0x84,
+	0x12, 0xb9,
+	0x15, 0xc9,             // lock detector threshold
+	0x16, 0x00,
+	0x17, 0x00,
+	0x18, 0x00,
+	0x19, 0x00,
+	0x1a, 0x00,
+	0x1f, 0x50,
+	0x20, 0x00,
+	0x21, 0x00,
+	0x22, 0x00,
+	0x23, 0x00,
+	0x28, 0x00,             // out imp: normal  out type: parallel FEC mode:0
+	0x29, 0x1e,             // 1/2 threshold
+	0x2a, 0x14,             // 2/3 threshold
+	0x2b, 0x0f,             // 3/4 threshold
+	0x2c, 0x09,             // 5/6 threshold
+	0x2d, 0x05,             // 7/8 threshold
+	0x2e, 0x01,
+	0x31, 0x1f,             // test all FECs
+	0x32, 0x19,             // viterbi and synchro search
+	0x33, 0xfc,             // rs control
+	0x34, 0x93,             // error control
+	0x0f, 0x92,
+	0xff, 0xff
+};
+
+static u8 alps_bsru6_inittab[] = {
+	0x01, 0x15,
+	0x02, 0x30,
+	0x03, 0x00,
+	0x04, 0x7d,		/* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
+	0x05, 0x35,		/* I2CT = 0, SCLT = 1, SDAT = 1 */
+	0x06, 0x40,		/* DAC not used, set to high impendance mode */
+	0x07, 0x00,		/* DAC LSB */
+	0x08, 0x40,		/* DiSEqC off, LNB power on OP2/LOCK pin on */
+	0x09, 0x00,		/* FIFO */
+	0x0c, 0x51,		/* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
+	0x0d, 0x82,		/* DC offset compensation = ON, beta_agc1 = 2 */
+	0x0e, 0x23,		/* alpha_tmg = 2, beta_tmg = 3 */
+	0x10, 0x3f,		// AGC2  0x3d
+	0x11, 0x84,
+	0x12, 0xb9,
+	0x15, 0xc9,		// lock detector threshold
+	0x16, 0x00,
+	0x17, 0x00,
+	0x18, 0x00,
+	0x19, 0x00,
+	0x1a, 0x00,
+	0x1f, 0x50,
+	0x20, 0x00,
+	0x21, 0x00,
+	0x22, 0x00,
+	0x23, 0x00,
+	0x28, 0x00,		// out imp: normal  out type: parallel FEC mode:0
+	0x29, 0x1e,		// 1/2 threshold
+	0x2a, 0x14,		// 2/3 threshold
+	0x2b, 0x0f,		// 3/4 threshold
+	0x2c, 0x09,		// 5/6 threshold
+	0x2d, 0x05,		// 7/8 threshold
+	0x2e, 0x01,
+	0x31, 0x1f,		// test all FECs
+	0x32, 0x19,		// viterbi and synchro search
+	0x33, 0xfc,		// rs control
+	0x34, 0x93,		// error control
+	0x0f, 0x52,
+	0xff, 0xff
+};
+
+static int alps_stv0299_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
+{
+	u8 aclk = 0;
+	u8 bclk = 0;
+
+	if (srate < 1500000) {
+		aclk = 0xb7;
+		bclk = 0x47;
+	} else if (srate < 3000000) {
+		aclk = 0xb7;
+		bclk = 0x4b;
+	} else if (srate < 7000000) {
+		aclk = 0xb7;
+		bclk = 0x4f;
+	} else if (srate < 14000000) {
+		aclk = 0xb7;
+		bclk = 0x53;
+	} else if (srate < 30000000) {
+		aclk = 0xb6;
+		bclk = 0x53;
+	} else if (srate < 45000000) {
+		aclk = 0xb4;
+		bclk = 0x51;
+	}
+
+	stv0299_writereg(fe, 0x13, aclk);
+	stv0299_writereg(fe, 0x14, bclk);
+	stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
+	stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
+	stv0299_writereg(fe, 0x21, (ratio) & 0xf0);
+
+	return 0;
+}
+
+static int philips_tsa5059_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = {.addr = 0x61,.flags = 0,.buf = buf,.len = sizeof(buf) };
+
+	if ((p->frequency < 950000) || (p->frequency > 2150000))
+		return -EINVAL;
+
+	div = (p->frequency + (125 - 1)) / 125;	/* round correctly */
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = div & 0xff;
+	buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
+	buf[3] = 0xC4;
+
+	if (p->frequency > 1530000)
+		buf[3] = 0xC0;
+
+	/* BSBE1 wants XCE bit set */
+	if (ttusb->revision == TTUSB_REV_2_2)
+		buf[3] |= 0x20;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1)
+		return -EIO;
+
+	return 0;
+}
+
+static struct stv0299_config alps_stv0299_config = {
+	.demod_address = 0x68,
+	.inittab = alps_bsru6_inittab,
+	.mclk = 88000000UL,
+	.invert = 1,
+	.skip_reinit = 0,
+	.lock_output = STV0299_LOCKOUTPUT_1,
+	.volt13_op0_op1 = STV0299_VOLT13_OP1,
+	.min_delay_ms = 100,
+	.set_symbol_rate = alps_stv0299_set_symbol_rate,
+};
+
+static int ttusb_novas_grundig_29504_491_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = {.addr = 0x61,.flags = 0,.buf = buf,.len = sizeof(buf) };
+
+	div = p->frequency / 125;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = div & 0xff;
+	buf[2] = 0x8e;
+	buf[3] = 0x00;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1)
+		return -EIO;
+
+	return 0;
+}
+
+static struct tda8083_config ttusb_novas_grundig_29504_491_config = {
+
+	.demod_address = 0x68,
+};
+
+static int alps_tdbe2_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb* ttusb = fe->dvb->priv;
+	u32 div;
+	u8 data[4];
+	struct i2c_msg msg = { .addr = 0x62, .flags = 0, .buf = data, .len = sizeof(data) };
+
+	div = (p->frequency + 35937500 + 31250) / 62500;
+
+	data[0] = (div >> 8) & 0x7f;
+	data[1] = div & 0xff;
+	data[2] = 0x85 | ((div >> 10) & 0x60);
+	data[3] = (p->frequency < 174000000 ? 0x88 : p->frequency < 470000000 ? 0x84 : 0x81);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer (&ttusb->i2c_adap, &msg, 1) != 1)
+		return -EIO;
+
+	return 0;
+}
+
+
+static struct ves1820_config alps_tdbe2_config = {
+	.demod_address = 0x09,
+	.xin = 57840000UL,
+	.invert = 1,
+	.selagc = VES1820_SELAGC_SIGNAMPERR,
+};
+
+static u8 read_pwm(struct ttusb* ttusb)
+{
+	u8 b = 0xff;
+	u8 pwm;
+	struct i2c_msg msg[] = { { .addr = 0x50,.flags = 0,.buf = &b,.len = 1 },
+				{ .addr = 0x50,.flags = I2C_M_RD,.buf = &pwm,.len = 1} };
+
+	if ((i2c_transfer(&ttusb->i2c_adap, msg, 2) != 2) || (pwm == 0xff))
+		pwm = 0x48;
+
+	return pwm;
+}
+
+
+static int dvbc_philips_tdm1316l_tuner_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct ttusb *ttusb = (struct ttusb *) fe->dvb->priv;
+	u8 tuner_buf[5];
+	struct i2c_msg tuner_msg = {.addr = 0x60,
+				    .flags = 0,
+				    .buf = tuner_buf,
+				    .len = sizeof(tuner_buf) };
+	int tuner_frequency = 0;
+	u8 band, cp, filter;
+
+	// determine charge pump
+	tuner_frequency = p->frequency;
+	if      (tuner_frequency <  87000000) {return -EINVAL;}
+	else if (tuner_frequency < 130000000) {cp = 3; band = 1;}
+	else if (tuner_frequency < 160000000) {cp = 5; band = 1;}
+	else if (tuner_frequency < 200000000) {cp = 6; band = 1;}
+	else if (tuner_frequency < 290000000) {cp = 3; band = 2;}
+	else if (tuner_frequency < 420000000) {cp = 5; band = 2;}
+	else if (tuner_frequency < 480000000) {cp = 6; band = 2;}
+	else if (tuner_frequency < 620000000) {cp = 3; band = 4;}
+	else if (tuner_frequency < 830000000) {cp = 5; band = 4;}
+	else if (tuner_frequency < 895000000) {cp = 7; band = 4;}
+	else {return -EINVAL;}
+
+	// assume PLL filter should always be 8MHz for the moment.
+	filter = 1;
+
+	// calculate divisor
+	// (Finput + Fif)/Fref; Fif = 36125000 Hz, Fref = 62500 Hz
+	tuner_frequency = ((p->frequency + 36125000) / 62500);
+
+	// setup tuner buffer
+	tuner_buf[0] = tuner_frequency >> 8;
+	tuner_buf[1] = tuner_frequency & 0xff;
+	tuner_buf[2] = 0xc8;
+	tuner_buf[3] = (cp << 5) | (filter << 3) | band;
+	tuner_buf[4] = 0x80;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
+		pr_err("dvbc_philips_tdm1316l_pll_set Error 1\n");
+		return -EIO;
+	}
+
+	msleep(50);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
+		pr_err("dvbc_philips_tdm1316l_pll_set Error 2\n");
+		return -EIO;
+	}
+
+	msleep(1);
+
+	return 0;
+}
+
+static u8 dvbc_philips_tdm1316l_inittab[] = {
+	0x80, 0x21,
+	0x80, 0x20,
+	0x81, 0x01,
+	0x81, 0x00,
+	0x00, 0x09,
+	0x01, 0x69,
+	0x03, 0x00,
+	0x04, 0x00,
+	0x07, 0x00,
+	0x08, 0x00,
+	0x20, 0x00,
+	0x21, 0x40,
+	0x22, 0x00,
+	0x23, 0x00,
+	0x24, 0x40,
+	0x25, 0x88,
+	0x30, 0xff,
+	0x31, 0x00,
+	0x32, 0xff,
+	0x33, 0x00,
+	0x34, 0x50,
+	0x35, 0x7f,
+	0x36, 0x00,
+	0x37, 0x20,
+	0x38, 0x00,
+	0x40, 0x1c,
+	0x41, 0xff,
+	0x42, 0x29,
+	0x43, 0x20,
+	0x44, 0xff,
+	0x45, 0x00,
+	0x46, 0x00,
+	0x49, 0x04,
+	0x4a, 0xff,
+	0x4b, 0x7f,
+	0x52, 0x30,
+	0x55, 0xae,
+	0x56, 0x47,
+	0x57, 0xe1,
+	0x58, 0x3a,
+	0x5a, 0x1e,
+	0x5b, 0x34,
+	0x60, 0x00,
+	0x63, 0x00,
+	0x64, 0x00,
+	0x65, 0x00,
+	0x66, 0x00,
+	0x67, 0x00,
+	0x68, 0x00,
+	0x69, 0x00,
+	0x6a, 0x02,
+	0x6b, 0x00,
+	0x70, 0xff,
+	0x71, 0x00,
+	0x72, 0x00,
+	0x73, 0x00,
+	0x74, 0x0c,
+	0x80, 0x00,
+	0x81, 0x00,
+	0x82, 0x00,
+	0x83, 0x00,
+	0x84, 0x04,
+	0x85, 0x80,
+	0x86, 0x24,
+	0x87, 0x78,
+	0x88, 0x00,
+	0x89, 0x00,
+	0x90, 0x01,
+	0x91, 0x01,
+	0xa0, 0x00,
+	0xa1, 0x00,
+	0xa2, 0x00,
+	0xb0, 0x91,
+	0xb1, 0x0b,
+	0xc0, 0x4b,
+	0xc1, 0x00,
+	0xc2, 0x00,
+	0xd0, 0x00,
+	0xd1, 0x00,
+	0xd2, 0x00,
+	0xd3, 0x00,
+	0xd4, 0x00,
+	0xd5, 0x00,
+	0xde, 0x00,
+	0xdf, 0x00,
+	0x61, 0x38,
+	0x62, 0x0a,
+	0x53, 0x13,
+	0x59, 0x08,
+	0x55, 0x00,
+	0x56, 0x40,
+	0x57, 0x08,
+	0x58, 0x3d,
+	0x88, 0x10,
+	0xa0, 0x00,
+	0xa0, 0x00,
+	0xa0, 0x00,
+	0xa0, 0x04,
+	0xff, 0xff,
+};
+
+static struct stv0297_config dvbc_philips_tdm1316l_config = {
+	.demod_address = 0x1c,
+	.inittab = dvbc_philips_tdm1316l_inittab,
+	.invert = 0,
+};
+
+static void frontend_init(struct ttusb* ttusb)
+{
+	switch(le16_to_cpu(ttusb->dev->descriptor.idProduct)) {
+	case 0x1003: // Hauppauge/TT Nova-USB-S budget (stv0299/ALPS BSRU6|BSBE1(tsa5059))
+		// try the stv0299 based first
+		ttusb->fe = dvb_attach(stv0299_attach, &alps_stv0299_config, &ttusb->i2c_adap);
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.set_params = philips_tsa5059_tuner_set_params;
+
+			if(ttusb->revision == TTUSB_REV_2_2) { // ALPS BSBE1
+				alps_stv0299_config.inittab = alps_bsbe1_inittab;
+				dvb_attach(lnbp21_attach, ttusb->fe, &ttusb->i2c_adap, 0, 0);
+			} else { // ALPS BSRU6
+				ttusb->fe->ops.set_voltage = ttusb_set_voltage;
+			}
+			break;
+		}
+
+		// Grundig 29504-491
+		ttusb->fe = dvb_attach(tda8083_attach, &ttusb_novas_grundig_29504_491_config, &ttusb->i2c_adap);
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.set_params = ttusb_novas_grundig_29504_491_tuner_set_params;
+			ttusb->fe->ops.set_voltage = ttusb_set_voltage;
+			break;
+		}
+		break;
+
+	case 0x1004: // Hauppauge/TT DVB-C budget (ves1820/ALPS TDBE2(sp5659))
+		ttusb->fe = dvb_attach(ves1820_attach, &alps_tdbe2_config, &ttusb->i2c_adap, read_pwm(ttusb));
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.set_params = alps_tdbe2_tuner_set_params;
+			break;
+		}
+
+		ttusb->fe = dvb_attach(stv0297_attach, &dvbc_philips_tdm1316l_config, &ttusb->i2c_adap);
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.set_params = dvbc_philips_tdm1316l_tuner_set_params;
+			break;
+		}
+		break;
+
+	case 0x1005: // Hauppauge/TT Nova-USB-t budget (tda10046/Philips td1316(tda6651tt) OR cx22700/ALPS TDMB7(??))
+		// try the ALPS TDMB7 first
+		ttusb->fe = dvb_attach(cx22700_attach, &alps_tdmb7_config, &ttusb->i2c_adap);
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.set_params = alps_tdmb7_tuner_set_params;
+			break;
+		}
+
+		// Philips td1316
+		ttusb->fe = dvb_attach(tda10046_attach, &philips_tdm1316l_config, &ttusb->i2c_adap);
+		if (ttusb->fe != NULL) {
+			ttusb->fe->ops.tuner_ops.init = philips_tdm1316l_tuner_init;
+			ttusb->fe->ops.tuner_ops.set_params = philips_tdm1316l_tuner_set_params;
+			break;
+		}
+		break;
+	}
+
+	if (ttusb->fe == NULL) {
+		pr_err("no frontend driver found for device [%04x:%04x]\n",
+		       le16_to_cpu(ttusb->dev->descriptor.idVendor),
+		       le16_to_cpu(ttusb->dev->descriptor.idProduct));
+	} else {
+		if (dvb_register_frontend(&ttusb->adapter, ttusb->fe)) {
+			pr_err("Frontend registration failed!\n");
+			dvb_frontend_detach(ttusb->fe);
+			ttusb->fe = NULL;
+		}
+	}
+}
+
+
+
+static const struct i2c_algorithm ttusb_dec_algo = {
+	.master_xfer	= master_xfer,
+	.functionality	= functionality,
+};
+
+static int ttusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *udev;
+	struct ttusb *ttusb;
+	int result;
+
+	dprintk("TTUSB DVB connected\n");
+
+	udev = interface_to_usbdev(intf);
+
+	if (intf->altsetting->desc.bInterfaceNumber != 1) return -ENODEV;
+
+	if (!(ttusb = kzalloc(sizeof(struct ttusb), GFP_KERNEL)))
+		return -ENOMEM;
+
+	ttusb->dev = udev;
+	ttusb->c = 0;
+	ttusb->mux_state = 0;
+	mutex_init(&ttusb->semi2c);
+
+	mutex_lock(&ttusb->semi2c);
+
+	mutex_init(&ttusb->semusb);
+
+	ttusb_setup_interfaces(ttusb);
+
+	result = ttusb_alloc_iso_urbs(ttusb);
+	if (result < 0) {
+		dprintk("ttusb_alloc_iso_urbs - failed\n");
+		mutex_unlock(&ttusb->semi2c);
+		kfree(ttusb);
+		return result;
+	}
+
+	if (ttusb_init_controller(ttusb))
+		pr_err("ttusb_init_controller: error\n");
+
+	mutex_unlock(&ttusb->semi2c);
+
+	result = dvb_register_adapter(&ttusb->adapter,
+				      "Technotrend/Hauppauge Nova-USB",
+				      THIS_MODULE, &udev->dev, adapter_nr);
+	if (result < 0) {
+		ttusb_free_iso_urbs(ttusb);
+		kfree(ttusb);
+		return result;
+	}
+	ttusb->adapter.priv = ttusb;
+
+	/* i2c */
+	memset(&ttusb->i2c_adap, 0, sizeof(struct i2c_adapter));
+	strscpy(ttusb->i2c_adap.name, "TTUSB DEC", sizeof(ttusb->i2c_adap.name));
+
+	i2c_set_adapdata(&ttusb->i2c_adap, ttusb);
+
+	ttusb->i2c_adap.algo              = &ttusb_dec_algo;
+	ttusb->i2c_adap.algo_data         = NULL;
+	ttusb->i2c_adap.dev.parent	  = &udev->dev;
+
+	result = i2c_add_adapter(&ttusb->i2c_adap);
+	if (result)
+		goto err_unregister_adapter;
+
+	memset(&ttusb->dvb_demux, 0, sizeof(ttusb->dvb_demux));
+
+	ttusb->dvb_demux.dmx.capabilities =
+	    DMX_TS_FILTERING | DMX_SECTION_FILTERING;
+	ttusb->dvb_demux.priv = NULL;
+#ifdef TTUSB_HWSECTIONS
+	ttusb->dvb_demux.filternum = TTUSB_MAXFILTER;
+#else
+	ttusb->dvb_demux.filternum = 32;
+#endif
+	ttusb->dvb_demux.feednum = TTUSB_MAXCHANNEL;
+	ttusb->dvb_demux.start_feed = ttusb_start_feed;
+	ttusb->dvb_demux.stop_feed = ttusb_stop_feed;
+	ttusb->dvb_demux.write_to_decoder = NULL;
+
+	result = dvb_dmx_init(&ttusb->dvb_demux);
+	if (result < 0) {
+		pr_err("dvb_dmx_init failed (errno = %d)\n", result);
+		result = -ENODEV;
+		goto err_i2c_del_adapter;
+	}
+//FIXME dmxdev (nur WAS?)
+	ttusb->dmxdev.filternum = ttusb->dvb_demux.filternum;
+	ttusb->dmxdev.demux = &ttusb->dvb_demux.dmx;
+	ttusb->dmxdev.capabilities = 0;
+
+	result = dvb_dmxdev_init(&ttusb->dmxdev, &ttusb->adapter);
+	if (result < 0) {
+		pr_err("dvb_dmxdev_init failed (errno = %d)\n",
+		       result);
+		result = -ENODEV;
+		goto err_release_dmx;
+	}
+
+	if (dvb_net_init(&ttusb->adapter, &ttusb->dvbnet, &ttusb->dvb_demux.dmx)) {
+		pr_err("dvb_net_init failed!\n");
+		result = -ENODEV;
+		goto err_release_dmxdev;
+	}
+
+	usb_set_intfdata(intf, (void *) ttusb);
+
+	frontend_init(ttusb);
+
+	return 0;
+
+err_release_dmxdev:
+	dvb_dmxdev_release(&ttusb->dmxdev);
+err_release_dmx:
+	dvb_dmx_release(&ttusb->dvb_demux);
+err_i2c_del_adapter:
+	i2c_del_adapter(&ttusb->i2c_adap);
+err_unregister_adapter:
+	dvb_unregister_adapter (&ttusb->adapter);
+	ttusb_free_iso_urbs(ttusb);
+	kfree(ttusb);
+	return result;
+}
+
+static void ttusb_disconnect(struct usb_interface *intf)
+{
+	struct ttusb *ttusb = usb_get_intfdata(intf);
+
+	usb_set_intfdata(intf, NULL);
+
+	ttusb->disconnecting = 1;
+
+	ttusb_stop_iso_xfer(ttusb);
+
+	ttusb->dvb_demux.dmx.close(&ttusb->dvb_demux.dmx);
+	dvb_net_release(&ttusb->dvbnet);
+	dvb_dmxdev_release(&ttusb->dmxdev);
+	dvb_dmx_release(&ttusb->dvb_demux);
+	if (ttusb->fe != NULL) {
+		dvb_unregister_frontend(ttusb->fe);
+		dvb_frontend_detach(ttusb->fe);
+	}
+	i2c_del_adapter(&ttusb->i2c_adap);
+	dvb_unregister_adapter(&ttusb->adapter);
+
+	ttusb_free_iso_urbs(ttusb);
+
+	kfree(ttusb);
+
+	dprintk("TTUSB DVB disconnected\n");
+}
+
+static const struct usb_device_id ttusb_table[] = {
+	{USB_DEVICE(0xb48, 0x1003)},
+	{USB_DEVICE(0xb48, 0x1004)},
+	{USB_DEVICE(0xb48, 0x1005)},
+	{}
+};
+
+MODULE_DEVICE_TABLE(usb, ttusb_table);
+
+static struct usb_driver ttusb_driver = {
+      .name		= "ttusb",
+      .probe		= ttusb_probe,
+      .disconnect	= ttusb_disconnect,
+      .id_table		= ttusb_table,
+};
+
+module_usb_driver(ttusb_driver);
+
+MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>");
+MODULE_DESCRIPTION("TTUSB DVB Driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("ttusb-budget/dspbootcode.bin");