drivers/media/usb/dvb-usb/digitv.c - linux-mtk - Git at Google

 /* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
  * receiver
  *
  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
  *
  * partly based on the SDK published by Nebula Electronics
  *
  *	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.
  *
  * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
  */
 #include "digitv.h"

 #include "mt352.h"
 #include "nxt6000.h"

 /* debug */
 static int dvb_usb_digitv_debug;
 module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);

 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

 #define deb_rc(args...)   dprintk(dvb_usb_digitv_debug,0x01,args)

 static int digitv_ctrl_msg(struct dvb_usb_device *d,
 		u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
 {
 	struct digitv_state *st = d->priv;
 	int ret, wo;

 	wo = (rbuf == NULL || rlen == 0); /* write-only */

 	if (wlen > 4 || rlen > 4)
 		return -EIO;

 	memset(st->sndbuf, 0, 7);
 	memset(st->rcvbuf, 0, 7);

 	st->sndbuf[0] = cmd;
 	st->sndbuf[1] = vv;
 	st->sndbuf[2] = wo ? wlen : rlen;

 	if (wo) {
 		memcpy(&st->sndbuf[3], wbuf, wlen);
 		ret = dvb_usb_generic_write(d, st->sndbuf, 7);
 	} else {
 		ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10);
 		memcpy(rbuf, &st->rcvbuf[3], rlen);
 	}
 	return ret;
 }

 /* I2C */
 static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
 {
 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
 	int i;

 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 		return -EAGAIN;

 	if (num > 2)
 		warn("more than 2 i2c messages at a time is not handled yet. TODO.");

 	for (i = 0; i < num; i++) {
 		/* write/read request */
 		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 			if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
 						msg[i+1].buf,msg[i+1].len) < 0)
 				break;
 			i++;
 		} else
 			if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
 						&msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
 				break;
 	}

 	mutex_unlock(&d->i2c_mutex);
 	return i;
 }

 static u32 digitv_i2c_func(struct i2c_adapter *adapter)
 {
 	return I2C_FUNC_I2C;
 }

 static struct i2c_algorithm digitv_i2c_algo = {
 	.master_xfer   = digitv_i2c_xfer,
 	.functionality = digitv_i2c_func,
 };

 /* Callbacks for DVB USB */
 static int digitv_identify_state (struct usb_device *udev, struct
 		dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
 		int *cold)
 {
 	*cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
 	return 0;
 }

 static int digitv_mt352_demod_init(struct dvb_frontend *fe)
 {
 	static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
 	static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
 			0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
 			0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
 			0x75, 0x32 };
 	int i;

 	for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
 		mt352_write(fe, &reset_buf[i], 2);

 	msleep(1);

 	for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
 		mt352_write(fe, &init_buf[i], 2);

 	return 0;
 }

 static struct mt352_config digitv_mt352_config = {
 	.demod_init = digitv_mt352_demod_init,
 };

 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)
 {
 	struct dvb_usb_adapter *adap = fe->dvb->priv;
 	u8 b[5];

 	fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
 	return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
 }

 static struct nxt6000_config digitv_nxt6000_config = {
 	.clock_inversion = 1,
 };

 static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
 {
 	struct digitv_state *st = adap->dev->priv;

 	adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,
 					 &adap->dev->i2c_adap);
 	if ((adap->fe_adap[0].fe) != NULL) {
 		st->is_nxt6000 = 0;
 		return 0;
 	}
 	adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,
 					 &digitv_nxt6000_config,
 					 &adap->dev->i2c_adap);
 	if ((adap->fe_adap[0].fe) != NULL) {
 		st->is_nxt6000 = 1;
 		return 0;
 	}
 	return -EIO;
 }

 static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
 {
 	struct digitv_state *st = adap->dev->priv;

 	if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))
 		return -ENODEV;

 	if (st->is_nxt6000)
 		adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;

 	return 0;
 }

 static struct rc_map_table rc_map_digitv_table[] = {
 	{ 0x5f55, KEY_0 },
 	{ 0x6f55, KEY_1 },
 	{ 0x9f55, KEY_2 },
 	{ 0xaf55, KEY_3 },
 	{ 0x5f56, KEY_4 },
 	{ 0x6f56, KEY_5 },
 	{ 0x9f56, KEY_6 },
 	{ 0xaf56, KEY_7 },
 	{ 0x5f59, KEY_8 },
 	{ 0x6f59, KEY_9 },
 	{ 0x9f59, KEY_TV },
 	{ 0xaf59, KEY_AUX },
 	{ 0x5f5a, KEY_DVD },
 	{ 0x6f5a, KEY_POWER },
 	{ 0x9f5a, KEY_CAMERA },     /* labelled 'Picture' */
 	{ 0xaf5a, KEY_AUDIO },
 	{ 0x5f65, KEY_INFO },
 	{ 0x6f65, KEY_F13 },     /* 16:9 */
 	{ 0x9f65, KEY_F14 },     /* 14:9 */
 	{ 0xaf65, KEY_EPG },
 	{ 0x5f66, KEY_EXIT },
 	{ 0x6f66, KEY_MENU },
 	{ 0x9f66, KEY_UP },
 	{ 0xaf66, KEY_DOWN },
 	{ 0x5f69, KEY_LEFT },
 	{ 0x6f69, KEY_RIGHT },
 	{ 0x9f69, KEY_ENTER },
 	{ 0xaf69, KEY_CHANNELUP },
 	{ 0x5f6a, KEY_CHANNELDOWN },
 	{ 0x6f6a, KEY_VOLUMEUP },
 	{ 0x9f6a, KEY_VOLUMEDOWN },
 	{ 0xaf6a, KEY_RED },
 	{ 0x5f95, KEY_GREEN },
 	{ 0x6f95, KEY_YELLOW },
 	{ 0x9f95, KEY_BLUE },
 	{ 0xaf95, KEY_SUBTITLE },
 	{ 0x5f96, KEY_F15 },     /* AD */
 	{ 0x6f96, KEY_TEXT },
 	{ 0x9f96, KEY_MUTE },
 	{ 0xaf96, KEY_REWIND },
 	{ 0x5f99, KEY_STOP },
 	{ 0x6f99, KEY_PLAY },
 	{ 0x9f99, KEY_FASTFORWARD },
 	{ 0xaf99, KEY_F16 },     /* chapter */
 	{ 0x5f9a, KEY_PAUSE },
 	{ 0x6f9a, KEY_PLAY },
 	{ 0x9f9a, KEY_RECORD },
 	{ 0xaf9a, KEY_F17 },     /* picture in picture */
 	{ 0x5fa5, KEY_KPPLUS },  /* zoom in */
 	{ 0x6fa5, KEY_KPMINUS }, /* zoom out */
 	{ 0x9fa5, KEY_F18 },     /* capture */
 	{ 0xafa5, KEY_F19 },     /* web */
 	{ 0x5fa6, KEY_EMAIL },
 	{ 0x6fa6, KEY_PHONE },
 	{ 0x9fa6, KEY_PC },
 };

 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
 	int ret, i;
 	u8 key[5];
 	u8 b[4] = { 0 };

 	*event = 0;
 	*state = REMOTE_NO_KEY_PRESSED;

 	ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, &key[1], 4);
 	if (ret)
 		return ret;

 	/* Tell the device we've read the remote. Not sure how necessary
 	   this is, but the Nebula SDK does it. */
 	ret = digitv_ctrl_msg(d, USB_WRITE_REMOTE, 0, b, 4, NULL, 0);
 	if (ret)
 		return ret;

 	/* if something is inside the buffer, simulate key press */
 	if (key[1] != 0)
 	{
 		  for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {
 			if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] &&
 			    rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) {
 				*event = d->props.rc.legacy.rc_map_table[i].keycode;
 				*state = REMOTE_KEY_PRESSED;
 				return 0;
 			}
 		}
 	}

 	if (key[0] != 0)
 		deb_rc("key: %*ph\n", 5, key);
 	return 0;
 }

 /* DVB USB Driver stuff */
 static struct dvb_usb_device_properties digitv_properties;

 static int digitv_probe(struct usb_interface *intf,
 		const struct usb_device_id *id)
 {
 	struct dvb_usb_device *d;
 	int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,
 				      adapter_nr);
 	if (ret == 0) {
 		u8 b[4] = { 0 };

 		if (d != NULL) { /* do that only when the firmware is loaded */
 			b[0] = 1;
 			digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);

 			b[0] = 0;
 			digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
 		}
 	}
 	return ret;
 }

 static struct usb_device_id digitv_table [] = {
 		{ USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
 		{ }		/* Terminating entry */
 };
 MODULE_DEVICE_TABLE (usb, digitv_table);

 static struct dvb_usb_device_properties digitv_properties = {
 	.caps = DVB_USB_IS_AN_I2C_ADAPTER,

 	.usb_ctrl = CYPRESS_FX2,
 	.firmware = "dvb-usb-digitv-02.fw",

 	.size_of_priv = sizeof(struct digitv_state),

 	.num_adapters = 1,
 	.adapter = {
 		{
 		.num_frontends = 1,
 		.fe = {{
 			.frontend_attach  = digitv_frontend_attach,
 			.tuner_attach     = digitv_tuner_attach,

 			/* parameter for the MPEG2-data transfer */
 			.stream = {
 				.type = USB_BULK,
 				.count = 7,
 				.endpoint = 0x02,
 				.u = {
 					.bulk = {
 						.buffersize = 4096,
 					}
 				}
 			},
 		}},
 		}
 	},
 	.identify_state   = digitv_identify_state,

 	.rc.legacy = {
 		.rc_interval      = 1000,
 		.rc_map_table     = rc_map_digitv_table,
 		.rc_map_size      = ARRAY_SIZE(rc_map_digitv_table),
 		.rc_query         = digitv_rc_query,
 	},

 	.i2c_algo         = &digitv_i2c_algo,

 	.generic_bulk_ctrl_endpoint = 0x01,

 	.num_device_descs = 1,
 	.devices = {
 		{   "Nebula Electronics uDigiTV DVB-T USB2.0)",
 			{ &digitv_table[0], NULL },
 			{ NULL },
 		},
 		{ NULL },
 	}
 };

 static struct usb_driver digitv_driver = {
 	.name		= "dvb_usb_digitv",
 	.probe		= digitv_probe,
 	.disconnect = dvb_usb_device_exit,
 	.id_table	= digitv_table,
 };

 module_usb_driver(digitv_driver);

 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
 MODULE_VERSION("1.0-alpha");
 MODULE_LICENSE("GPL");
	/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
	* receiver
	*
	* Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
	*
	* partly based on the SDK published by Nebula Electronics
	*
	* 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.
	*
	* see Documentation/media/dvb-drivers/dvb-usb.rst for more information
	*/
	#include "digitv.h"

	#include "mt352.h"
	#include "nxt6000.h"

	/* debug */
	static int dvb_usb_digitv_debug;
	module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
	MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);

	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

	#define deb_rc(args...) dprintk(dvb_usb_digitv_debug,0x01,args)

	static int digitv_ctrl_msg(struct dvb_usb_device *d,
	u8 cmd, u8 vv, u8 wbuf, int wlen, u8 rbuf, int rlen)
	{
	struct digitv_state *st = d->priv;
	int ret, wo;

	wo = (rbuf == NULL \|\| rlen == 0); /* write-only */

	if (wlen > 4 \|\| rlen > 4)
	return -EIO;

	memset(st->sndbuf, 0, 7);
	memset(st->rcvbuf, 0, 7);

	st->sndbuf[0] = cmd;
	st->sndbuf[1] = vv;
	st->sndbuf[2] = wo ? wlen : rlen;

	if (wo) {
	memcpy(&st->sndbuf[3], wbuf, wlen);
	ret = dvb_usb_generic_write(d, st->sndbuf, 7);
	} else {
	ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10);
	memcpy(rbuf, &st->rcvbuf[3], rlen);
	}
	return ret;
	}

	/* I2C */
	static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
	{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i;

	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
	return -EAGAIN;

	if (num > 2)
	warn("more than 2 i2c messages at a time is not handled yet. TODO.");

	for (i = 0; i < num; i++) {
	/* write/read request */
	if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
	if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
	msg[i+1].buf,msg[i+1].len) < 0)
	break;
	i++;
	} else
	if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
	&msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
	break;
	}

	mutex_unlock(&d->i2c_mutex);
	return i;
	}

	static u32 digitv_i2c_func(struct i2c_adapter *adapter)
	{
	return I2C_FUNC_I2C;
	}

	static struct i2c_algorithm digitv_i2c_algo = {
	.master_xfer = digitv_i2c_xfer,
	.functionality = digitv_i2c_func,
	};

	/* Callbacks for DVB USB */
	static int digitv_identify_state (struct usb_device *udev, struct
	dvb_usb_device_properties props, struct dvb_usb_device_description *desc,
	int *cold)
	{
	*cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
	return 0;
	}

	static int digitv_mt352_demod_init(struct dvb_frontend *fe)
	{
	static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 };
	static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50,
	0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00,
	0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f,
	0x75, 0x32 };
	int i;

	for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
	mt352_write(fe, &reset_buf[i], 2);

	msleep(1);

	for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
	mt352_write(fe, &init_buf[i], 2);

	return 0;
	}

	static struct mt352_config digitv_mt352_config = {
	.demod_init = digitv_mt352_demod_init,
	};

	static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)
	{
	struct dvb_usb_adapter *adap = fe->dvb->priv;
	u8 b[5];

	fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));
	if (fe->ops.i2c_gate_ctrl)
	fe->ops.i2c_gate_ctrl(fe, 1);
	return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
	}

	static struct nxt6000_config digitv_nxt6000_config = {
	.clock_inversion = 1,
	};

	static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
	{
	struct digitv_state *st = adap->dev->priv;

	adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,
	&adap->dev->i2c_adap);
	if ((adap->fe_adap[0].fe) != NULL) {
	st->is_nxt6000 = 0;
	return 0;
	}
	adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,
	&digitv_nxt6000_config,
	&adap->dev->i2c_adap);
	if ((adap->fe_adap[0].fe) != NULL) {
	st->is_nxt6000 = 1;
	return 0;
	}
	return -EIO;
	}

	static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
	{
	struct digitv_state *st = adap->dev->priv;

	if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))
	return -ENODEV;

	if (st->is_nxt6000)
	adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;

	return 0;
	}

	static struct rc_map_table rc_map_digitv_table[] = {
	{ 0x5f55, KEY_0 },
	{ 0x6f55, KEY_1 },
	{ 0x9f55, KEY_2 },
	{ 0xaf55, KEY_3 },
	{ 0x5f56, KEY_4 },
	{ 0x6f56, KEY_5 },
	{ 0x9f56, KEY_6 },
	{ 0xaf56, KEY_7 },
	{ 0x5f59, KEY_8 },
	{ 0x6f59, KEY_9 },
	{ 0x9f59, KEY_TV },
	{ 0xaf59, KEY_AUX },
	{ 0x5f5a, KEY_DVD },
	{ 0x6f5a, KEY_POWER },
	{ 0x9f5a, KEY_CAMERA }, /* labelled 'Picture' */
	{ 0xaf5a, KEY_AUDIO },
	{ 0x5f65, KEY_INFO },
	{ 0x6f65, KEY_F13 }, /* 16:9 */
	{ 0x9f65, KEY_F14 }, /* 14:9 */
	{ 0xaf65, KEY_EPG },
	{ 0x5f66, KEY_EXIT },
	{ 0x6f66, KEY_MENU },
	{ 0x9f66, KEY_UP },
	{ 0xaf66, KEY_DOWN },
	{ 0x5f69, KEY_LEFT },
	{ 0x6f69, KEY_RIGHT },
	{ 0x9f69, KEY_ENTER },
	{ 0xaf69, KEY_CHANNELUP },
	{ 0x5f6a, KEY_CHANNELDOWN },
	{ 0x6f6a, KEY_VOLUMEUP },
	{ 0x9f6a, KEY_VOLUMEDOWN },
	{ 0xaf6a, KEY_RED },
	{ 0x5f95, KEY_GREEN },
	{ 0x6f95, KEY_YELLOW },
	{ 0x9f95, KEY_BLUE },
	{ 0xaf95, KEY_SUBTITLE },
	{ 0x5f96, KEY_F15 }, /* AD */
	{ 0x6f96, KEY_TEXT },
	{ 0x9f96, KEY_MUTE },
	{ 0xaf96, KEY_REWIND },
	{ 0x5f99, KEY_STOP },
	{ 0x6f99, KEY_PLAY },
	{ 0x9f99, KEY_FASTFORWARD },
	{ 0xaf99, KEY_F16 }, /* chapter */
	{ 0x5f9a, KEY_PAUSE },
	{ 0x6f9a, KEY_PLAY },
	{ 0x9f9a, KEY_RECORD },
	{ 0xaf9a, KEY_F17 }, /* picture in picture */
	{ 0x5fa5, KEY_KPPLUS }, /* zoom in */
	{ 0x6fa5, KEY_KPMINUS }, /* zoom out */
	{ 0x9fa5, KEY_F18 }, /* capture */
	{ 0xafa5, KEY_F19 }, /* web */
	{ 0x5fa6, KEY_EMAIL },
	{ 0x6fa6, KEY_PHONE },
	{ 0x9fa6, KEY_PC },
	};

	static int digitv_rc_query(struct dvb_usb_device d, u32 event, int *state)
	{
	int ret, i;
	u8 key[5];
	u8 b[4] = { 0 };

	*event = 0;
	*state = REMOTE_NO_KEY_PRESSED;

	ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, &key[1], 4);
	if (ret)
	return ret;

	/* Tell the device we've read the remote. Not sure how necessary
	this is, but the Nebula SDK does it. */
	ret = digitv_ctrl_msg(d, USB_WRITE_REMOTE, 0, b, 4, NULL, 0);
	if (ret)
	return ret;

	/* if something is inside the buffer, simulate key press */
	if (key[1] != 0)
	{
	for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {
	if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] &&
	rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) {
	*event = d->props.rc.legacy.rc_map_table[i].keycode;
	*state = REMOTE_KEY_PRESSED;
	return 0;
	}
	}
	}

	if (key[0] != 0)
	deb_rc("key: %*ph\n", 5, key);
	return 0;
	}

	/* DVB USB Driver stuff */
	static struct dvb_usb_device_properties digitv_properties;

	static int digitv_probe(struct usb_interface *intf,
	const struct usb_device_id *id)
	{
	struct dvb_usb_device *d;
	int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,
	adapter_nr);
	if (ret == 0) {
	u8 b[4] = { 0 };

	if (d != NULL) { /* do that only when the firmware is loaded */
	b[0] = 1;
	digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);

	b[0] = 0;
	digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
	}
	}
	return ret;
	}

	static struct usb_device_id digitv_table [] = {
	{ USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
	{ } /* Terminating entry */
	};
	MODULE_DEVICE_TABLE (usb, digitv_table);

	static struct dvb_usb_device_properties digitv_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,

	.usb_ctrl = CYPRESS_FX2,
	.firmware = "dvb-usb-digitv-02.fw",

	.size_of_priv = sizeof(struct digitv_state),

	.num_adapters = 1,
	.adapter = {
	{
	.num_frontends = 1,
	.fe = {{
	.frontend_attach = digitv_frontend_attach,
	.tuner_attach = digitv_tuner_attach,

	/* parameter for the MPEG2-data transfer */
	.stream = {
	.type = USB_BULK,
	.count = 7,
	.endpoint = 0x02,
	.u = {
	.bulk = {
	.buffersize = 4096,
	}
	}
	},
	}},
	}
	},
	.identify_state = digitv_identify_state,

	.rc.legacy = {
	.rc_interval = 1000,
	.rc_map_table = rc_map_digitv_table,
	.rc_map_size = ARRAY_SIZE(rc_map_digitv_table),
	.rc_query = digitv_rc_query,
	},

	.i2c_algo = &digitv_i2c_algo,

	.generic_bulk_ctrl_endpoint = 0x01,

	.num_device_descs = 1,
	.devices = {
	{ "Nebula Electronics uDigiTV DVB-T USB2.0)",
	{ &digitv_table[0], NULL },
	{ NULL },
	},
	{ NULL },
	}
	};

	static struct usb_driver digitv_driver = {
	.name = "dvb_usb_digitv",
	.probe = digitv_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table = digitv_table,
	};

	module_usb_driver(digitv_driver);

	MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
	MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
	MODULE_VERSION("1.0-alpha");
	MODULE_LICENSE("GPL");