drivers/media/dvb/dvb-usb/dw2102.c - kernel/msm-4.19 - Gitiles

 /* DVB USB framework compliant Linux driver for the DVBWorld DVB-S 2102 Card
 *
 * Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
 *
 *	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/dvb/README.dvb-usb for more information
 */
 #include <linux/version.h>
 #include "dw2102.h"
 #include "stv0299.h"
 #include "z0194a.h"

 #ifndef USB_PID_DW2102
 #define USB_PID_DW2102 0x2102
 #endif

 #define DW2102_READ_MSG 0
 #define DW2102_WRITE_MSG 1

 #define REG_1F_SYMBOLRATE_BYTE0 0x1f
 #define REG_20_SYMBOLRATE_BYTE1 0x20
 #define REG_21_SYMBOLRATE_BYTE2 0x21

 #define DW2102_VOLTAGE_CTRL (0x1800)
 #define DW2102_RC_QUERY (0x1a00)

 struct dw2102_state {
 	u32 last_key_pressed;
 };
 struct dw2102_rc_keys {
 	u32 keycode;
 	u32 event;
 };

 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

 static int dw2102_op_rw(struct usb_device *dev, u8 request, u16 value,
 		u8 *data, u16 len, int flags)
 {
 	int ret;
 	u8 u8buf[len];

 	unsigned int pipe = (flags == DW2102_READ_MSG) ?
 		usb_rcvctrlpipe(dev, 0) : usb_sndctrlpipe(dev, 0);
 	u8 request_type = (flags == DW2102_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;

 	if (flags == DW2102_WRITE_MSG)
 		memcpy(u8buf, data, len);
 	ret = usb_control_msg(dev, pipe, request,
 		request_type | USB_TYPE_VENDOR, value, 0 , u8buf, len, 2000);

 	if (flags == DW2102_READ_MSG)
 		memcpy(data, u8buf, len);
 	return ret;
 }

 /* I2C */

 static int dw2102_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 		int num)
 {
 struct dvb_usb_device *d = i2c_get_adapdata(adap);
 	int i = 0, ret = 0;
 	u8 buf6[] = {0x2c, 0x05, 0xc0, 0, 0, 0, 0};
 	u8 request;
 	u16 value;

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

 	switch (num) {
 	case 2:
 		/* read stv0299 register */
 		request = 0xb5;
 		value = msg[0].buf[0];/* register */
 		for (i = 0; i < msg[1].len; i++) {
 			value = value + i;
 			ret = dw2102_op_rw(d->udev, 0xb5,
 				value, buf6, 2, DW2102_READ_MSG);
 			msg[1].buf[i] = buf6[0];

 		}
 		break;
 	case 1:
 		switch (msg[0].addr) {
 		case 0x68:
 			/* write to stv0299 register */
 			buf6[0] = 0x2a;
 			buf6[1] = msg[0].buf[0];
 			buf6[2] = msg[0].buf[1];
 			ret = dw2102_op_rw(d->udev, 0xb2,
 				0, buf6, 3, DW2102_WRITE_MSG);
 			break;
 		case 0x60:
 			if (msg[0].flags == 0) {
 			/* write to tuner pll */
 				buf6[0] = 0x2c;
 				buf6[1] = 5;
 				buf6[2] = 0xc0;
 				buf6[3] = msg[0].buf[0];
 				buf6[4] = msg[0].buf[1];
 				buf6[5] = msg[0].buf[2];
 				buf6[6] = msg[0].buf[3];
 				ret = dw2102_op_rw(d->udev, 0xb2,
 				0, buf6, 7, DW2102_WRITE_MSG);
 			} else {
 			/* write to tuner pll */
 				ret = dw2102_op_rw(d->udev, 0xb5,
 				0, buf6, 1, DW2102_READ_MSG);
 				msg[0].buf[0] = buf6[0];
 			}
 			break;
 		case (DW2102_RC_QUERY):
 			ret  = dw2102_op_rw(d->udev, 0xb8,
 				0, buf6, 2, DW2102_READ_MSG);
 			msg[0].buf[0] = buf6[0];
 			msg[0].buf[1] = buf6[1];
 			break;
 		case (DW2102_VOLTAGE_CTRL):
 			buf6[0] = 0x30;
 			buf6[1] = msg[0].buf[0];
 			ret = dw2102_op_rw(d->udev, 0xb2,
 				0, buf6, 2, DW2102_WRITE_MSG);
 			break;
 		}

 		break;
 	}

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

 static u32 dw2102_i2c_func(struct i2c_adapter *adapter)
 {
 	return I2C_FUNC_I2C;
 }

 static struct i2c_algorithm dw2102_i2c_algo = {
 	.master_xfer = dw2102_i2c_transfer,
 	.functionality = dw2102_i2c_func,
 };

 static int dw2102_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
 {
 	static u8 command_13v[1] = {0x00};
 	static u8 command_18v[1] = {0x01};
 	struct i2c_msg msg[] = {
 		{.addr = DW2102_VOLTAGE_CTRL, .flags = 0,
 			.buf = command_13v, .len = 1},
 	};

 	struct dvb_usb_adapter *udev_adap =
 		(struct dvb_usb_adapter *)(fe->dvb->priv);
 	if (voltage == SEC_VOLTAGE_18)
 		msg[0].buf = command_18v;
 	i2c_transfer(&udev_adap->dev->i2c_adap, msg, 1);
 	return 0;
 }

 static int dw2102_frontend_attach(struct dvb_usb_adapter *d)
 {
 	d->fe = dvb_attach(stv0299_attach, &sharp_z0194a_config,
 		&d->dev->i2c_adap);
 	if (d->fe != NULL) {
 		d->fe->ops.set_voltage = dw2102_set_voltage;
 		info("Attached stv0299!\n");
 		return 0;
 	}
 	return -EIO;
 }

 static int dw2102_tuner_attach(struct dvb_usb_adapter *adap)
 {
 	dvb_attach(dvb_pll_attach, adap->fe, 0x60,
 		&adap->dev->i2c_adap, DVB_PLL_OPERA1);
 	return 0;
 }

 static struct dvb_usb_rc_key dw2102_rc_keys[] = {
 	{ 0xf8,	0x0a, KEY_Q },		/*power*/
 	{ 0xf8,	0x0c, KEY_M },		/*mute*/
 	{ 0xf8,	0x11, KEY_1 },
 	{ 0xf8,	0x12, KEY_2 },
 	{ 0xf8,	0x13, KEY_3 },
 	{ 0xf8,	0x14, KEY_4 },
 	{ 0xf8,	0x15, KEY_5 },
 	{ 0xf8,	0x16, KEY_6 },
 	{ 0xf8,	0x17, KEY_7 },
 	{ 0xf8,	0x18, KEY_8 },
 	{ 0xf8,	0x19, KEY_9 },
 	{ 0xf8, 0x10, KEY_0 },
 	{ 0xf8, 0x1c, KEY_PAGEUP },	/*ch+*/
 	{ 0xf8, 0x0f, KEY_PAGEDOWN },	/*ch-*/
 	{ 0xf8, 0x1a, KEY_O },		/*vol+*/
 	{ 0xf8, 0x0e, KEY_Z },		/*vol-*/
 	{ 0xf8, 0x04, KEY_R },		/*rec*/
 	{ 0xf8, 0x09, KEY_D },		/*fav*/
 	{ 0xf8, 0x08, KEY_BACKSPACE },	/*rewind*/
 	{ 0xf8, 0x07, KEY_A },		/*fast*/
 	{ 0xf8, 0x0b, KEY_P },		/*pause*/
 	{ 0xf8, 0x02, KEY_ESC },	/*cancel*/
 	{ 0xf8, 0x03, KEY_G },		/*tab*/
 	{ 0xf8, 0x00, KEY_UP },		/*up*/
 	{ 0xf8, 0x1f, KEY_ENTER },	/*ok*/
 	{ 0xf8, 0x01, KEY_DOWN },	/*down*/
 	{ 0xf8, 0x05, KEY_C },		/*cap*/
 	{ 0xf8, 0x06, KEY_S },		/*stop*/
 	{ 0xf8, 0x40, KEY_F },		/*full*/
 	{ 0xf8, 0x1e, KEY_W },		/*tvmode*/
 	{ 0xf8, 0x1b, KEY_B },		/*recall*/

 };


 static int dw2102_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
 	struct dw2102_state *st = d->priv;
 	u8 key[2];
 	struct i2c_msg msg[] = {
 		{.addr = DW2102_RC_QUERY, .flags = I2C_M_RD, .buf = key,
 		.len = 2},
 	};
 	int i;

 	*state = REMOTE_NO_KEY_PRESSED;
 	if (dw2102_i2c_transfer(&d->i2c_adap, msg, 1) == 1) {
 		for (i = 0; i < ARRAY_SIZE(dw2102_rc_keys); i++) {
 			if (dw2102_rc_keys[i].data == msg[0].buf[0]) {
 				*state = REMOTE_KEY_PRESSED;
 				*event = dw2102_rc_keys[i].event;
 				st->last_key_pressed =
 					dw2102_rc_keys[i].event;
 				break;
 			}
 		st->last_key_pressed = 0;
 		}
 	}
 	/* info("key: %x %x\n",key[0],key[1]); */
 	return 0;
 }

 static struct usb_device_id dw2102_table[] = {
 	{USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2102)},
 	{USB_DEVICE(USB_VID_CYPRESS, 0x2101)},
 	{ }
 };

 MODULE_DEVICE_TABLE(usb, dw2102_table);

 static int dw2102_load_firmware(struct usb_device *dev,
 			const struct firmware *frmwr)
 {
 	u8 *b, *p;
 	int ret = 0, i;
 	u8 reset;
 	u8 reset16 [] = {0, 0, 0, 0, 0, 0, 0};
 	const struct firmware *fw;
 	const char *filename = "dvb-usb-dw2101.fw";
 	switch (dev->descriptor.idProduct) {
 	case 0x2101:
 		ret = request_firmware(&fw, filename, &dev->dev);
 		if (ret != 0) {
 			err("did not find the firmware file. (%s) "
 			"Please see linux/Documentation/dvb/ for more details "
 			"on firmware-problems.", filename);
 			return ret;
 		}
 		break;
 	case USB_PID_DW2102:
 		fw = frmwr;
 		break;
 	}
 	info("start downloading DW2102 firmware");
 	p = kmalloc(fw->size, GFP_KERNEL);
 	reset = 1;
 	/*stop the CPU*/
 	dw2102_op_rw(dev, 0xa0, 0x7f92, &reset, 1, DW2102_WRITE_MSG);
 	dw2102_op_rw(dev, 0xa0, 0xe600, &reset, 1, DW2102_WRITE_MSG);

 	if (p != NULL) {
 		memcpy(p, fw->data, fw->size);
 		for (i = 0; i < fw->size; i += 0x40) {
 			b = (u8 *) p + i;
 			if (dw2102_op_rw
 				(dev, 0xa0, i, b , 0x40,
 					DW2102_WRITE_MSG) != 0x40
 				) {
 				err("error while transferring firmware");
 				ret = -EINVAL;
 				break;
 			}
 		}
 		/* restart the CPU */
 		reset = 0;
 		if (ret || dw2102_op_rw
 			(dev, 0xa0, 0x7f92, &reset, 1,
 			DW2102_WRITE_MSG) != 1) {
 			err("could not restart the USB controller CPU.");
 			ret = -EINVAL;
 		}
 		if (ret || dw2102_op_rw
 			(dev, 0xa0, 0xe600, &reset, 1,
 			DW2102_WRITE_MSG) != 1) {
 			err("could not restart the USB controller CPU.");
 			ret = -EINVAL;
 		}
 		/* init registers */
 		switch (dev->descriptor.idProduct) {
 		case USB_PID_DW2102:
 			dw2102_op_rw
 				(dev, 0xbf, 0x0040, &reset, 0,
 				DW2102_WRITE_MSG);
 			dw2102_op_rw
 				(dev, 0xb9, 0x0000, &reset16[0], 2,
 				DW2102_READ_MSG);
 			break;
 		case 0x2101:
 			dw2102_op_rw
 				(dev, 0xbc, 0x0030, &reset16[0], 2,
 				DW2102_READ_MSG);
 			dw2102_op_rw
 				(dev, 0xba, 0x0000, &reset16[0], 7,
 				DW2102_READ_MSG);
 			dw2102_op_rw
 				(dev, 0xba, 0x0000, &reset16[0], 7,
 				DW2102_READ_MSG);
 			dw2102_op_rw
 				(dev, 0xb9, 0x0000, &reset16[0], 2,
 				DW2102_READ_MSG);
 			break;
 		}
 		kfree(p);
 	}
 	return ret;
 }

 static struct dvb_usb_device_properties dw2102_properties = {
 	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
 	.usb_ctrl = DEVICE_SPECIFIC,
 	.firmware = "dvb-usb-dw2102.fw",
 	.size_of_priv = sizeof(struct dw2102_state),
 	.no_reconnect = 1,

 	.i2c_algo = &dw2102_i2c_algo,
 	.rc_key_map = dw2102_rc_keys,
 	.rc_key_map_size = ARRAY_SIZE(dw2102_rc_keys),
 	.rc_interval = 150,
 	.rc_query = dw2102_rc_query,

 	.generic_bulk_ctrl_endpoint = 0x81,
 	/* parameter for the MPEG2-data transfer */
 	.num_adapters = 1,
 	.download_firmware = dw2102_load_firmware,
 	.adapter = {
 		{
 			.frontend_attach = dw2102_frontend_attach,
 			.streaming_ctrl = NULL,
 			.tuner_attach = dw2102_tuner_attach,
 			.stream = {
 				.type = USB_BULK,
 				.count = 8,
 				.endpoint = 0x82,
 				.u = {
 					.bulk = {
 						.buffersize = 4096,
 					}
 				}
 			},
 		}
 	},
 	.num_device_descs = 2,
 	.devices = {
 		{"DVBWorld DVB-S 2102 USB2.0",
 			{&dw2102_table[0], NULL},
 			{NULL},
 		},
 		{"DVBWorld DVB-S 2101 USB2.0",
 			{&dw2102_table[1], NULL},
 			{NULL},
 		},
 	}
 };

 static int dw2102_probe(struct usb_interface *intf,
 		const struct usb_device_id *id)
 {
 	return dvb_usb_device_init(intf, &dw2102_properties,
 		THIS_MODULE, NULL, adapter_nr);
 }

 static struct usb_driver dw2102_driver = {
 	.name = "dw2102",
 	.probe = dw2102_probe,
 	.disconnect = dvb_usb_device_exit,
 	.id_table = dw2102_table,
 };

 static int __init dw2102_module_init(void)
 {
 	int ret =  usb_register(&dw2102_driver);
 	if (ret)
 		err("usb_register failed. Error number %d", ret);

 	return ret;
 }

 static void __exit dw2102_module_exit(void)
 {
 	usb_deregister(&dw2102_driver);
 }

 module_init(dw2102_module_init);
 module_exit(dw2102_module_exit);

 MODULE_AUTHOR("Igor M. Liplianin (c) liplianin@me.by");
 MODULE_DESCRIPTION("Driver for DVBWorld DVB-S 2101 2102 USB2.0 device");
 MODULE_VERSION("0.1");
 MODULE_LICENSE("GPL");
	/* DVB USB framework compliant Linux driver for the DVBWorld DVB-S 2102 Card
	*
	* Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
	*
	* 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/dvb/README.dvb-usb for more information
	*/
	#include <linux/version.h>
	#include "dw2102.h"
	#include "stv0299.h"
	#include "z0194a.h"

	#ifndef USB_PID_DW2102
	#define USB_PID_DW2102 0x2102
	#endif

	#define DW2102_READ_MSG 0
	#define DW2102_WRITE_MSG 1

	#define REG_1F_SYMBOLRATE_BYTE0 0x1f
	#define REG_20_SYMBOLRATE_BYTE1 0x20
	#define REG_21_SYMBOLRATE_BYTE2 0x21

	#define DW2102_VOLTAGE_CTRL (0x1800)
	#define DW2102_RC_QUERY (0x1a00)

	struct dw2102_state {
	u32 last_key_pressed;
	};
	struct dw2102_rc_keys {
	u32 keycode;
	u32 event;
	};

	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

	static int dw2102_op_rw(struct usb_device *dev, u8 request, u16 value,
	u8 *data, u16 len, int flags)
	{
	int ret;
	u8 u8buf[len];

	unsigned int pipe = (flags == DW2102_READ_MSG) ?
	usb_rcvctrlpipe(dev, 0) : usb_sndctrlpipe(dev, 0);
	u8 request_type = (flags == DW2102_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;

	if (flags == DW2102_WRITE_MSG)
	memcpy(u8buf, data, len);
	ret = usb_control_msg(dev, pipe, request,
	request_type \| USB_TYPE_VENDOR, value, 0 , u8buf, len, 2000);

	if (flags == DW2102_READ_MSG)
	memcpy(data, u8buf, len);
	return ret;
	}

	/* I2C */

	static int dw2102_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
	int num)
	{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i = 0, ret = 0;
	u8 buf6[] = {0x2c, 0x05, 0xc0, 0, 0, 0, 0};
	u8 request;
	u16 value;

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

	switch (num) {
	case 2:
	/* read stv0299 register */
	request = 0xb5;
	value = msg[0].buf[0];/* register */
	for (i = 0; i < msg[1].len; i++) {
	value = value + i;
	ret = dw2102_op_rw(d->udev, 0xb5,
	value, buf6, 2, DW2102_READ_MSG);
	msg[1].buf[i] = buf6[0];

	}
	break;
	case 1:
	switch (msg[0].addr) {
	case 0x68:
	/* write to stv0299 register */
	buf6[0] = 0x2a;
	buf6[1] = msg[0].buf[0];
	buf6[2] = msg[0].buf[1];
	ret = dw2102_op_rw(d->udev, 0xb2,
	0, buf6, 3, DW2102_WRITE_MSG);
	break;
	case 0x60:
	if (msg[0].flags == 0) {
	/* write to tuner pll */
	buf6[0] = 0x2c;
	buf6[1] = 5;
	buf6[2] = 0xc0;
	buf6[3] = msg[0].buf[0];
	buf6[4] = msg[0].buf[1];
	buf6[5] = msg[0].buf[2];
	buf6[6] = msg[0].buf[3];
	ret = dw2102_op_rw(d->udev, 0xb2,
	0, buf6, 7, DW2102_WRITE_MSG);
	} else {
	/* write to tuner pll */
	ret = dw2102_op_rw(d->udev, 0xb5,
	0, buf6, 1, DW2102_READ_MSG);
	msg[0].buf[0] = buf6[0];
	}
	break;
	case (DW2102_RC_QUERY):
	ret = dw2102_op_rw(d->udev, 0xb8,
	0, buf6, 2, DW2102_READ_MSG);
	msg[0].buf[0] = buf6[0];
	msg[0].buf[1] = buf6[1];
	break;
	case (DW2102_VOLTAGE_CTRL):
	buf6[0] = 0x30;
	buf6[1] = msg[0].buf[0];
	ret = dw2102_op_rw(d->udev, 0xb2,
	0, buf6, 2, DW2102_WRITE_MSG);
	break;
	}

	break;
	}

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

	static u32 dw2102_i2c_func(struct i2c_adapter *adapter)
	{
	return I2C_FUNC_I2C;
	}

	static struct i2c_algorithm dw2102_i2c_algo = {
	.master_xfer = dw2102_i2c_transfer,
	.functionality = dw2102_i2c_func,
	};

	static int dw2102_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
	{
	static u8 command_13v[1] = {0x00};
	static u8 command_18v[1] = {0x01};
	struct i2c_msg msg[] = {
	{.addr = DW2102_VOLTAGE_CTRL, .flags = 0,
	.buf = command_13v, .len = 1},
	};

	struct dvb_usb_adapter *udev_adap =
	(struct dvb_usb_adapter *)(fe->dvb->priv);
	if (voltage == SEC_VOLTAGE_18)
	msg[0].buf = command_18v;
	i2c_transfer(&udev_adap->dev->i2c_adap, msg, 1);
	return 0;
	}

	static int dw2102_frontend_attach(struct dvb_usb_adapter *d)
	{
	d->fe = dvb_attach(stv0299_attach, &sharp_z0194a_config,
	&d->dev->i2c_adap);
	if (d->fe != NULL) {
	d->fe->ops.set_voltage = dw2102_set_voltage;
	info("Attached stv0299!\n");
	return 0;
	}
	return -EIO;
	}

	static int dw2102_tuner_attach(struct dvb_usb_adapter *adap)
	{
	dvb_attach(dvb_pll_attach, adap->fe, 0x60,
	&adap->dev->i2c_adap, DVB_PLL_OPERA1);
	return 0;
	}

	static struct dvb_usb_rc_key dw2102_rc_keys[] = {
	{ 0xf8, 0x0a, KEY_Q }, /power/
	{ 0xf8, 0x0c, KEY_M }, /mute/
	{ 0xf8, 0x11, KEY_1 },
	{ 0xf8, 0x12, KEY_2 },
	{ 0xf8, 0x13, KEY_3 },
	{ 0xf8, 0x14, KEY_4 },
	{ 0xf8, 0x15, KEY_5 },
	{ 0xf8, 0x16, KEY_6 },
	{ 0xf8, 0x17, KEY_7 },
	{ 0xf8, 0x18, KEY_8 },
	{ 0xf8, 0x19, KEY_9 },
	{ 0xf8, 0x10, KEY_0 },
	{ 0xf8, 0x1c, KEY_PAGEUP }, /ch+/
	{ 0xf8, 0x0f, KEY_PAGEDOWN }, /ch-/
	{ 0xf8, 0x1a, KEY_O }, /vol+/
	{ 0xf8, 0x0e, KEY_Z }, /vol-/
	{ 0xf8, 0x04, KEY_R }, /rec/
	{ 0xf8, 0x09, KEY_D }, /fav/
	{ 0xf8, 0x08, KEY_BACKSPACE }, /rewind/
	{ 0xf8, 0x07, KEY_A }, /fast/
	{ 0xf8, 0x0b, KEY_P }, /pause/
	{ 0xf8, 0x02, KEY_ESC }, /cancel/
	{ 0xf8, 0x03, KEY_G }, /tab/
	{ 0xf8, 0x00, KEY_UP }, /up/
	{ 0xf8, 0x1f, KEY_ENTER }, /ok/
	{ 0xf8, 0x01, KEY_DOWN }, /down/
	{ 0xf8, 0x05, KEY_C }, /cap/
	{ 0xf8, 0x06, KEY_S }, /stop/
	{ 0xf8, 0x40, KEY_F }, /full/
	{ 0xf8, 0x1e, KEY_W }, /tvmode/
	{ 0xf8, 0x1b, KEY_B }, /recall/

	};



	static int dw2102_rc_query(struct dvb_usb_device d, u32 event, int *state)
	{
	struct dw2102_state *st = d->priv;
	u8 key[2];
	struct i2c_msg msg[] = {
	{.addr = DW2102_RC_QUERY, .flags = I2C_M_RD, .buf = key,
	.len = 2},
	};
	int i;

	*state = REMOTE_NO_KEY_PRESSED;
	if (dw2102_i2c_transfer(&d->i2c_adap, msg, 1) == 1) {
	for (i = 0; i < ARRAY_SIZE(dw2102_rc_keys); i++) {
	if (dw2102_rc_keys[i].data == msg[0].buf[0]) {
	*state = REMOTE_KEY_PRESSED;
	*event = dw2102_rc_keys[i].event;
	st->last_key_pressed =
	dw2102_rc_keys[i].event;
	break;
	}
	st->last_key_pressed = 0;
	}
	}
	/* info("key: %x %x\n",key[0],key[1]); */
	return 0;
	}

	static struct usb_device_id dw2102_table[] = {
	{USB_DEVICE(USB_VID_CYPRESS, USB_PID_DW2102)},
	{USB_DEVICE(USB_VID_CYPRESS, 0x2101)},
	{ }
	};

	MODULE_DEVICE_TABLE(usb, dw2102_table);

	static int dw2102_load_firmware(struct usb_device *dev,
	const struct firmware *frmwr)
	{
	u8 b, p;
	int ret = 0, i;
	u8 reset;
	u8 reset16 [] = {0, 0, 0, 0, 0, 0, 0};
	const struct firmware *fw;
	const char *filename = "dvb-usb-dw2101.fw";
	switch (dev->descriptor.idProduct) {
	case 0x2101:
	ret = request_firmware(&fw, filename, &dev->dev);
	if (ret != 0) {
	err("did not find the firmware file. (%s) "
	"Please see linux/Documentation/dvb/ for more details "
	"on firmware-problems.", filename);
	return ret;
	}
	break;
	case USB_PID_DW2102:
	fw = frmwr;
	break;
	}
	info("start downloading DW2102 firmware");
	p = kmalloc(fw->size, GFP_KERNEL);
	reset = 1;
	/stop the CPU/
	dw2102_op_rw(dev, 0xa0, 0x7f92, &reset, 1, DW2102_WRITE_MSG);
	dw2102_op_rw(dev, 0xa0, 0xe600, &reset, 1, DW2102_WRITE_MSG);

	if (p != NULL) {
	memcpy(p, fw->data, fw->size);
	for (i = 0; i < fw->size; i += 0x40) {
	b = (u8 *) p + i;
	if (dw2102_op_rw
	(dev, 0xa0, i, b , 0x40,
	DW2102_WRITE_MSG) != 0x40
	) {
	err("error while transferring firmware");
	ret = -EINVAL;
	break;
	}
	}
	/* restart the CPU */
	reset = 0;
	if (ret \|\| dw2102_op_rw
	(dev, 0xa0, 0x7f92, &reset, 1,
	DW2102_WRITE_MSG) != 1) {
	err("could not restart the USB controller CPU.");
	ret = -EINVAL;
	}
	if (ret \|\| dw2102_op_rw
	(dev, 0xa0, 0xe600, &reset, 1,
	DW2102_WRITE_MSG) != 1) {
	err("could not restart the USB controller CPU.");
	ret = -EINVAL;
	}
	/* init registers */
	switch (dev->descriptor.idProduct) {
	case USB_PID_DW2102:
	dw2102_op_rw
	(dev, 0xbf, 0x0040, &reset, 0,
	DW2102_WRITE_MSG);
	dw2102_op_rw
	(dev, 0xb9, 0x0000, &reset16[0], 2,
	DW2102_READ_MSG);
	break;
	case 0x2101:
	dw2102_op_rw
	(dev, 0xbc, 0x0030, &reset16[0], 2,
	DW2102_READ_MSG);
	dw2102_op_rw
	(dev, 0xba, 0x0000, &reset16[0], 7,
	DW2102_READ_MSG);
	dw2102_op_rw
	(dev, 0xba, 0x0000, &reset16[0], 7,
	DW2102_READ_MSG);
	dw2102_op_rw
	(dev, 0xb9, 0x0000, &reset16[0], 2,
	DW2102_READ_MSG);
	break;
	}
	kfree(p);
	}
	return ret;
	}

	static struct dvb_usb_device_properties dw2102_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
	.usb_ctrl = DEVICE_SPECIFIC,
	.firmware = "dvb-usb-dw2102.fw",
	.size_of_priv = sizeof(struct dw2102_state),
	.no_reconnect = 1,

	.i2c_algo = &dw2102_i2c_algo,
	.rc_key_map = dw2102_rc_keys,
	.rc_key_map_size = ARRAY_SIZE(dw2102_rc_keys),
	.rc_interval = 150,
	.rc_query = dw2102_rc_query,

	.generic_bulk_ctrl_endpoint = 0x81,
	/* parameter for the MPEG2-data transfer */
	.num_adapters = 1,
	.download_firmware = dw2102_load_firmware,
	.adapter = {
	{
	.frontend_attach = dw2102_frontend_attach,
	.streaming_ctrl = NULL,
	.tuner_attach = dw2102_tuner_attach,
	.stream = {
	.type = USB_BULK,
	.count = 8,
	.endpoint = 0x82,
	.u = {
	.bulk = {
	.buffersize = 4096,
	}
	}
	},
	}
	},
	.num_device_descs = 2,
	.devices = {
	{"DVBWorld DVB-S 2102 USB2.0",
	{&dw2102_table[0], NULL},
	{NULL},
	},
	{"DVBWorld DVB-S 2101 USB2.0",
	{&dw2102_table[1], NULL},
	{NULL},
	},
	}
	};

	static int dw2102_probe(struct usb_interface *intf,
	const struct usb_device_id *id)
	{
	return dvb_usb_device_init(intf, &dw2102_properties,
	THIS_MODULE, NULL, adapter_nr);
	}

	static struct usb_driver dw2102_driver = {
	.name = "dw2102",
	.probe = dw2102_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table = dw2102_table,
	};

	static int __init dw2102_module_init(void)
	{
	int ret = usb_register(&dw2102_driver);
	if (ret)
	err("usb_register failed. Error number %d", ret);

	return ret;
	}

	static void __exit dw2102_module_exit(void)
	{
	usb_deregister(&dw2102_driver);
	}

	module_init(dw2102_module_init);
	module_exit(dw2102_module_exit);

	MODULE_AUTHOR("Igor M. Liplianin (c) liplianin@me.by");
	MODULE_DESCRIPTION("Driver for DVBWorld DVB-S 2101 2102 USB2.0 device");
	MODULE_VERSION("0.1");
	MODULE_LICENSE("GPL");