drivers/media/usb/dvb-usb/dibusb-common.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /* Common methods for dibusb-based-receivers.
  *
  * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
  *
  * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
  */

 #include "dibusb.h"

 /* Max transfer size done by I2C transfer functions */
 #define MAX_XFER_SIZE  64

 static int debug;
 module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
 MODULE_DESCRIPTION("Common methods for dibusb-based receivers");
 MODULE_LICENSE("GPL");

 #define deb_info(args...) dprintk(debug,0x01,args)

 /* common stuff used by the different dibusb modules */
 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
 	if (adap->priv != NULL) {
 		struct dibusb_state *st = adap->priv;
 		if (st->ops.fifo_ctrl != NULL)
 			if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
 				err("error while controlling the fifo of the demod.");
 				return -ENODEV;
 			}
 	}
 	return 0;
 }
 EXPORT_SYMBOL(dibusb_streaming_ctrl);

 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
 {
 	if (adap->priv != NULL) {
 		struct dibusb_state *st = adap->priv;
 		if (st->ops.pid_ctrl != NULL)
 			st->ops.pid_ctrl(adap->fe_adap[0].fe,
 					 index, pid, onoff);
 	}
 	return 0;
 }
 EXPORT_SYMBOL(dibusb_pid_filter);

 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
 	if (adap->priv != NULL) {
 		struct dibusb_state *st = adap->priv;
 		if (st->ops.pid_parse != NULL)
 			if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
 				err("could not handle pid_parser");
 	}
 	return 0;
 }
 EXPORT_SYMBOL(dibusb_pid_filter_ctrl);

 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
 	u8 *b;
 	int ret;

 	b = kmalloc(3, GFP_KERNEL);
 	if (!b)
 		return -ENOMEM;

 	b[0] = DIBUSB_REQ_SET_IOCTL;
 	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
 	b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;

 	ret = dvb_usb_generic_write(d, b, 3);

 	kfree(b);

 	msleep(10);

 	return ret;
 }
 EXPORT_SYMBOL(dibusb_power_ctrl);

 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
 	int ret;
 	u8 *b;

 	b = kmalloc(3, GFP_KERNEL);
 	if (!b)
 		return -ENOMEM;

 	if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
 		goto ret;

 	if (onoff) {
 		b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
 		b[1] = 0x00;
 		ret = dvb_usb_generic_write(adap->dev, b, 2);
 		if (ret  < 0)
 			goto ret;
 	}

 	b[0] = DIBUSB_REQ_SET_IOCTL;
 	b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
 	ret = dvb_usb_generic_write(adap->dev, b, 3);

 ret:
 	kfree(b);
 	return ret;
 }
 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);

 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
 	u8 *b;
 	int ret;

 	if (!onoff)
 		return 0;

 	b = kmalloc(3, GFP_KERNEL);
 	if (!b)
 		return -ENOMEM;

 	b[0] = DIBUSB_REQ_SET_IOCTL;
 	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
 	b[2] = DIBUSB_IOCTL_POWER_WAKEUP;

 	ret = dvb_usb_generic_write(d, b, 3);

 	kfree(b);

 	return ret;
 }
 EXPORT_SYMBOL(dibusb2_0_power_ctrl);

 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
 			  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
 {
 	u8 *sndbuf;
 	int ret, wo, len;

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

 	len = 2 + wlen + (wo ? 0 : 2);

 	sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
 	if (!sndbuf)
 		return -ENOMEM;

 	if (4 + wlen > MAX_XFER_SIZE) {
 		warn("i2c wr: len=%d is too big!\n", wlen);
 		ret = -EOPNOTSUPP;
 		goto ret;
 	}

 	sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
 	sndbuf[1] = (addr << 1) | (wo ? 0 : 1);

 	memcpy(&sndbuf[2], wbuf, wlen);

 	if (!wo) {
 		sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
 		sndbuf[wlen + 3] = rlen & 0xff;
 	}

 	ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);

 ret:
 	kfree(sndbuf);
 	return ret;
 }

 /*
  * I2C master xfer function
  */
 static int dibusb_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;

 	for (i = 0; i < num; i++) {
 		/* write/read request */
 		if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
 					  && (msg[i+1].flags & I2C_M_RD)) {
 			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
 						msg[i+1].buf,msg[i+1].len) < 0)
 				break;
 			i++;
 		} else if ((msg[i].flags & I2C_M_RD) == 0) {
 			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
 				break;
 		} else if (msg[i].addr != 0x50) {
 			/* 0x50 is the address of the eeprom - we need to protect it
 			 * from dibusb's bad i2c implementation: reads without
 			 * writing the offset before are forbidden */
 			if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
 				break;
 		}
 	}

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

 static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
 {
 	return I2C_FUNC_I2C;
 }

 struct i2c_algorithm dibusb_i2c_algo = {
 	.master_xfer   = dibusb_i2c_xfer,
 	.functionality = dibusb_i2c_func,
 };
 EXPORT_SYMBOL(dibusb_i2c_algo);

 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
 {
 	u8 *buf;
 	int rc;

 	buf = kzalloc(2, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;

 	buf[0] = offs;

 	rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
 	*val = buf[1];
 	kfree(buf);

 	return rc;
 }
 EXPORT_SYMBOL(dibusb_read_eeprom_byte);

 /*
  * common remote control stuff
  */
 struct rc_map_table rc_map_dibusb_table[] = {
 	/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
 	{ 0x0016, KEY_POWER },
 	{ 0x0010, KEY_MUTE },
 	{ 0x0003, KEY_1 },
 	{ 0x0001, KEY_2 },
 	{ 0x0006, KEY_3 },
 	{ 0x0009, KEY_4 },
 	{ 0x001d, KEY_5 },
 	{ 0x001f, KEY_6 },
 	{ 0x000d, KEY_7 },
 	{ 0x0019, KEY_8 },
 	{ 0x001b, KEY_9 },
 	{ 0x0015, KEY_0 },
 	{ 0x0005, KEY_CHANNELUP },
 	{ 0x0002, KEY_CHANNELDOWN },
 	{ 0x001e, KEY_VOLUMEUP },
 	{ 0x000a, KEY_VOLUMEDOWN },
 	{ 0x0011, KEY_RECORD },
 	{ 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
 	{ 0x0014, KEY_PLAY },
 	{ 0x001a, KEY_STOP },
 	{ 0x0040, KEY_REWIND },
 	{ 0x0012, KEY_FASTFORWARD },
 	{ 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
 	{ 0x004c, KEY_PAUSE },
 	{ 0x004d, KEY_SCREEN }, /* Full screen mode. */
 	{ 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
 	/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
 	{ 0x000c, KEY_CANCEL }, /* Cancel */
 	{ 0x001c, KEY_EPG }, /* EPG */
 	{ 0x0000, KEY_TAB }, /* Tab */
 	{ 0x0048, KEY_INFO }, /* Preview */
 	{ 0x0004, KEY_LIST }, /* RecordList */
 	{ 0x000f, KEY_TEXT }, /* Teletext */
 	/* Key codes for the KWorld/ADSTech/JetWay remote. */
 	{ 0x8612, KEY_POWER },
 	{ 0x860f, KEY_SELECT }, /* source */
 	{ 0x860c, KEY_UNKNOWN }, /* scan */
 	{ 0x860b, KEY_EPG },
 	{ 0x8610, KEY_MUTE },
 	{ 0x8601, KEY_1 },
 	{ 0x8602, KEY_2 },
 	{ 0x8603, KEY_3 },
 	{ 0x8604, KEY_4 },
 	{ 0x8605, KEY_5 },
 	{ 0x8606, KEY_6 },
 	{ 0x8607, KEY_7 },
 	{ 0x8608, KEY_8 },
 	{ 0x8609, KEY_9 },
 	{ 0x860a, KEY_0 },
 	{ 0x8618, KEY_ZOOM },
 	{ 0x861c, KEY_UNKNOWN }, /* preview */
 	{ 0x8613, KEY_UNKNOWN }, /* snap */
 	{ 0x8600, KEY_UNDO },
 	{ 0x861d, KEY_RECORD },
 	{ 0x860d, KEY_STOP },
 	{ 0x860e, KEY_PAUSE },
 	{ 0x8616, KEY_PLAY },
 	{ 0x8611, KEY_BACK },
 	{ 0x8619, KEY_FORWARD },
 	{ 0x8614, KEY_UNKNOWN }, /* pip */
 	{ 0x8615, KEY_ESC },
 	{ 0x861a, KEY_UP },
 	{ 0x861e, KEY_DOWN },
 	{ 0x861f, KEY_LEFT },
 	{ 0x861b, KEY_RIGHT },

 	/* Key codes for the DiBcom MOD3000 remote. */
 	{ 0x8000, KEY_MUTE },
 	{ 0x8001, KEY_TEXT },
 	{ 0x8002, KEY_HOME },
 	{ 0x8003, KEY_POWER },

 	{ 0x8004, KEY_RED },
 	{ 0x8005, KEY_GREEN },
 	{ 0x8006, KEY_YELLOW },
 	{ 0x8007, KEY_BLUE },

 	{ 0x8008, KEY_DVD },
 	{ 0x8009, KEY_AUDIO },
 	{ 0x800a, KEY_IMAGES },      /* Pictures */
 	{ 0x800b, KEY_VIDEO },

 	{ 0x800c, KEY_BACK },
 	{ 0x800d, KEY_UP },
 	{ 0x800e, KEY_RADIO },
 	{ 0x800f, KEY_EPG },

 	{ 0x8010, KEY_LEFT },
 	{ 0x8011, KEY_OK },
 	{ 0x8012, KEY_RIGHT },
 	{ 0x8013, KEY_UNKNOWN },    /* SAP */

 	{ 0x8014, KEY_TV },
 	{ 0x8015, KEY_DOWN },
 	{ 0x8016, KEY_MENU },       /* DVD Menu */
 	{ 0x8017, KEY_LAST },

 	{ 0x8018, KEY_RECORD },
 	{ 0x8019, KEY_STOP },
 	{ 0x801a, KEY_PAUSE },
 	{ 0x801b, KEY_PLAY },

 	{ 0x801c, KEY_PREVIOUS },
 	{ 0x801d, KEY_REWIND },
 	{ 0x801e, KEY_FASTFORWARD },
 	{ 0x801f, KEY_NEXT},

 	{ 0x8040, KEY_1 },
 	{ 0x8041, KEY_2 },
 	{ 0x8042, KEY_3 },
 	{ 0x8043, KEY_CHANNELUP },

 	{ 0x8044, KEY_4 },
 	{ 0x8045, KEY_5 },
 	{ 0x8046, KEY_6 },
 	{ 0x8047, KEY_CHANNELDOWN },

 	{ 0x8048, KEY_7 },
 	{ 0x8049, KEY_8 },
 	{ 0x804a, KEY_9 },
 	{ 0x804b, KEY_VOLUMEUP },

 	{ 0x804c, KEY_CLEAR },
 	{ 0x804d, KEY_0 },
 	{ 0x804e, KEY_ENTER },
 	{ 0x804f, KEY_VOLUMEDOWN },
 };
 EXPORT_SYMBOL(rc_map_dibusb_table);

 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
 	u8 *buf;
 	int ret;

 	buf = kmalloc(5, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;

 	buf[0] = DIBUSB_REQ_POLL_REMOTE;

 	ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
 	if (ret < 0)
 		goto ret;

 	dvb_usb_nec_rc_key_to_event(d, buf, event, state);

 	if (buf[0] != 0)
 		deb_info("key: %*ph\n", 5, buf);

 ret:
 	kfree(buf);

 	return ret;
 }
 EXPORT_SYMBOL(dibusb_rc_query);
	// SPDX-License-Identifier: GPL-2.0-only
	/* Common methods for dibusb-based-receivers.
	*
	* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
	*
	* see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
	*/

	#include "dibusb.h"

	/* Max transfer size done by I2C transfer functions */
	#define MAX_XFER_SIZE 64

	static int debug;
	module_param(debug, int, 0644);
	MODULE_PARM_DESC(debug, "set debugging level (1=info (\|-able))." DVB_USB_DEBUG_STATUS);
	MODULE_DESCRIPTION("Common methods for dibusb-based receivers");
	MODULE_LICENSE("GPL");

	#define deb_info(args...) dprintk(debug,0x01,args)

	/* common stuff used by the different dibusb modules */
	int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
	{
	if (adap->priv != NULL) {
	struct dibusb_state *st = adap->priv;
	if (st->ops.fifo_ctrl != NULL)
	if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
	err("error while controlling the fifo of the demod.");
	return -ENODEV;
	}
	}
	return 0;
	}
	EXPORT_SYMBOL(dibusb_streaming_ctrl);

	int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
	{
	if (adap->priv != NULL) {
	struct dibusb_state *st = adap->priv;
	if (st->ops.pid_ctrl != NULL)
	st->ops.pid_ctrl(adap->fe_adap[0].fe,
	index, pid, onoff);
	}
	return 0;
	}
	EXPORT_SYMBOL(dibusb_pid_filter);

	int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
	{
	if (adap->priv != NULL) {
	struct dibusb_state *st = adap->priv;
	if (st->ops.pid_parse != NULL)
	if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
	err("could not handle pid_parser");
	}
	return 0;
	}
	EXPORT_SYMBOL(dibusb_pid_filter_ctrl);

	int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
	{
	u8 *b;
	int ret;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
	return -ENOMEM;

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
	b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;

	ret = dvb_usb_generic_write(d, b, 3);

	kfree(b);

	msleep(10);

	return ret;
	}
	EXPORT_SYMBOL(dibusb_power_ctrl);

	int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
	{
	int ret;
	u8 *b;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
	return -ENOMEM;

	if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
	goto ret;

	if (onoff) {
	b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
	b[1] = 0x00;
	ret = dvb_usb_generic_write(adap->dev, b, 2);
	if (ret < 0)
	goto ret;
	}

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
	ret = dvb_usb_generic_write(adap->dev, b, 3);

	ret:
	kfree(b);
	return ret;
	}
	EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);

	int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
	{
	u8 *b;
	int ret;

	if (!onoff)
	return 0;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
	return -ENOMEM;

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
	b[2] = DIBUSB_IOCTL_POWER_WAKEUP;

	ret = dvb_usb_generic_write(d, b, 3);

	kfree(b);

	return ret;
	}
	EXPORT_SYMBOL(dibusb2_0_power_ctrl);

	static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
	u8 wbuf, u16 wlen, u8 rbuf, u16 rlen)
	{
	u8 *sndbuf;
	int ret, wo, len;

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

	len = 2 + wlen + (wo ? 0 : 2);

	sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
	if (!sndbuf)
	return -ENOMEM;

	if (4 + wlen > MAX_XFER_SIZE) {
	warn("i2c wr: len=%d is too big!\n", wlen);
	ret = -EOPNOTSUPP;
	goto ret;
	}

	sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
	sndbuf[1] = (addr << 1) \| (wo ? 0 : 1);

	memcpy(&sndbuf[2], wbuf, wlen);

	if (!wo) {
	sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
	sndbuf[wlen + 3] = rlen & 0xff;
	}

	ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);

	ret:
	kfree(sndbuf);
	return ret;
	}

	/*
	* I2C master xfer function
	*/
	static int dibusb_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;

	for (i = 0; i < num; i++) {
	/* write/read request */
	if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
	&& (msg[i+1].flags & I2C_M_RD)) {
	if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
	msg[i+1].buf,msg[i+1].len) < 0)
	break;
	i++;
	} else if ((msg[i].flags & I2C_M_RD) == 0) {
	if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
	break;
	} else if (msg[i].addr != 0x50) {
	/* 0x50 is the address of the eeprom - we need to protect it
	* from dibusb's bad i2c implementation: reads without
	* writing the offset before are forbidden */
	if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
	break;
	}
	}

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

	static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
	{
	return I2C_FUNC_I2C;
	}

	struct i2c_algorithm dibusb_i2c_algo = {
	.master_xfer = dibusb_i2c_xfer,
	.functionality = dibusb_i2c_func,
	};
	EXPORT_SYMBOL(dibusb_i2c_algo);

	int dibusb_read_eeprom_byte(struct dvb_usb_device d, u8 offs, u8 val)
	{
	u8 *buf;
	int rc;

	buf = kzalloc(2, GFP_KERNEL);
	if (!buf)
	return -ENOMEM;

	buf[0] = offs;

	rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
	*val = buf[1];
	kfree(buf);

	return rc;
	}
	EXPORT_SYMBOL(dibusb_read_eeprom_byte);

	/*
	* common remote control stuff
	*/
	struct rc_map_table rc_map_dibusb_table[] = {
	/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
	{ 0x0016, KEY_POWER },
	{ 0x0010, KEY_MUTE },
	{ 0x0003, KEY_1 },
	{ 0x0001, KEY_2 },
	{ 0x0006, KEY_3 },
	{ 0x0009, KEY_4 },
	{ 0x001d, KEY_5 },
	{ 0x001f, KEY_6 },
	{ 0x000d, KEY_7 },
	{ 0x0019, KEY_8 },
	{ 0x001b, KEY_9 },
	{ 0x0015, KEY_0 },
	{ 0x0005, KEY_CHANNELUP },
	{ 0x0002, KEY_CHANNELDOWN },
	{ 0x001e, KEY_VOLUMEUP },
	{ 0x000a, KEY_VOLUMEDOWN },
	{ 0x0011, KEY_RECORD },
	{ 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
	{ 0x0014, KEY_PLAY },
	{ 0x001a, KEY_STOP },
	{ 0x0040, KEY_REWIND },
	{ 0x0012, KEY_FASTFORWARD },
	{ 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
	{ 0x004c, KEY_PAUSE },
	{ 0x004d, KEY_SCREEN }, /* Full screen mode. */
	{ 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
	/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
	{ 0x000c, KEY_CANCEL }, /* Cancel */
	{ 0x001c, KEY_EPG }, /* EPG */
	{ 0x0000, KEY_TAB }, /* Tab */
	{ 0x0048, KEY_INFO }, /* Preview */
	{ 0x0004, KEY_LIST }, /* RecordList */
	{ 0x000f, KEY_TEXT }, /* Teletext */
	/* Key codes for the KWorld/ADSTech/JetWay remote. */
	{ 0x8612, KEY_POWER },
	{ 0x860f, KEY_SELECT }, /* source */
	{ 0x860c, KEY_UNKNOWN }, /* scan */
	{ 0x860b, KEY_EPG },
	{ 0x8610, KEY_MUTE },
	{ 0x8601, KEY_1 },
	{ 0x8602, KEY_2 },
	{ 0x8603, KEY_3 },
	{ 0x8604, KEY_4 },
	{ 0x8605, KEY_5 },
	{ 0x8606, KEY_6 },
	{ 0x8607, KEY_7 },
	{ 0x8608, KEY_8 },
	{ 0x8609, KEY_9 },
	{ 0x860a, KEY_0 },
	{ 0x8618, KEY_ZOOM },
	{ 0x861c, KEY_UNKNOWN }, /* preview */
	{ 0x8613, KEY_UNKNOWN }, /* snap */
	{ 0x8600, KEY_UNDO },
	{ 0x861d, KEY_RECORD },
	{ 0x860d, KEY_STOP },
	{ 0x860e, KEY_PAUSE },
	{ 0x8616, KEY_PLAY },
	{ 0x8611, KEY_BACK },
	{ 0x8619, KEY_FORWARD },
	{ 0x8614, KEY_UNKNOWN }, /* pip */
	{ 0x8615, KEY_ESC },
	{ 0x861a, KEY_UP },
	{ 0x861e, KEY_DOWN },
	{ 0x861f, KEY_LEFT },
	{ 0x861b, KEY_RIGHT },

	/* Key codes for the DiBcom MOD3000 remote. */
	{ 0x8000, KEY_MUTE },
	{ 0x8001, KEY_TEXT },
	{ 0x8002, KEY_HOME },
	{ 0x8003, KEY_POWER },

	{ 0x8004, KEY_RED },
	{ 0x8005, KEY_GREEN },
	{ 0x8006, KEY_YELLOW },
	{ 0x8007, KEY_BLUE },

	{ 0x8008, KEY_DVD },
	{ 0x8009, KEY_AUDIO },
	{ 0x800a, KEY_IMAGES }, /* Pictures */
	{ 0x800b, KEY_VIDEO },

	{ 0x800c, KEY_BACK },
	{ 0x800d, KEY_UP },
	{ 0x800e, KEY_RADIO },
	{ 0x800f, KEY_EPG },

	{ 0x8010, KEY_LEFT },
	{ 0x8011, KEY_OK },
	{ 0x8012, KEY_RIGHT },
	{ 0x8013, KEY_UNKNOWN }, /* SAP */

	{ 0x8014, KEY_TV },
	{ 0x8015, KEY_DOWN },
	{ 0x8016, KEY_MENU }, /* DVD Menu */
	{ 0x8017, KEY_LAST },

	{ 0x8018, KEY_RECORD },
	{ 0x8019, KEY_STOP },
	{ 0x801a, KEY_PAUSE },
	{ 0x801b, KEY_PLAY },

	{ 0x801c, KEY_PREVIOUS },
	{ 0x801d, KEY_REWIND },
	{ 0x801e, KEY_FASTFORWARD },
	{ 0x801f, KEY_NEXT},

	{ 0x8040, KEY_1 },
	{ 0x8041, KEY_2 },
	{ 0x8042, KEY_3 },
	{ 0x8043, KEY_CHANNELUP },

	{ 0x8044, KEY_4 },
	{ 0x8045, KEY_5 },
	{ 0x8046, KEY_6 },
	{ 0x8047, KEY_CHANNELDOWN },

	{ 0x8048, KEY_7 },
	{ 0x8049, KEY_8 },
	{ 0x804a, KEY_9 },
	{ 0x804b, KEY_VOLUMEUP },

	{ 0x804c, KEY_CLEAR },
	{ 0x804d, KEY_0 },
	{ 0x804e, KEY_ENTER },
	{ 0x804f, KEY_VOLUMEDOWN },
	};
	EXPORT_SYMBOL(rc_map_dibusb_table);

	int dibusb_rc_query(struct dvb_usb_device d, u32 event, int *state)
	{
	u8 *buf;
	int ret;

	buf = kmalloc(5, GFP_KERNEL);
	if (!buf)
	return -ENOMEM;

	buf[0] = DIBUSB_REQ_POLL_REMOTE;

	ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
	if (ret < 0)
	goto ret;

	dvb_usb_nec_rc_key_to_event(d, buf, event, state);

	if (buf[0] != 0)
	deb_info("key: %*ph\n", 5, buf);

	ret:
	kfree(buf);

	return ret;
	}
	EXPORT_SYMBOL(dibusb_rc_query);