drivers/media/dvb/dvb-usb/anysee.c - kernel/prism - Git at Google

 /*
  * DVB USB Linux driver for Anysee E30 DVB-C & DVB-T USB2.0 receiver
  *
  * Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
  *
  *    This program is free software; you can redistribute it and/or modify
  *    it under the terms of the GNU General Public License as published by
  *    the Free Software Foundation; either version 2 of the License, or
  *    (at your option) any later version.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU General Public License for more details.
  *
  *    You should have received a copy of the GNU General Public License
  *    along with this program; if not, write to the Free Software
  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  * TODO:
  * - add smart card reader support for Conditional Access (CA)
  *
  * Card reader in Anysee is nothing more than ISO 7816 card reader.
  * There is no hardware CAM in any Anysee device sold.
  * In my understanding it should be implemented by making own module
  * for ISO 7816 card reader, like dvb_ca_en50221 is implemented. This
  * module registers serial interface that can be used to communicate
  * with any ISO 7816 smart card.
  *
  * Any help according to implement serial smart card reader support
  * is highly welcome!
  */

 #include "anysee.h"
 #include "tda1002x.h"
 #include "mt352.h"
 #include "mt352_priv.h"
 #include "zl10353.h"

 /* debug */
 static int dvb_usb_anysee_debug;
 module_param_named(debug, dvb_usb_anysee_debug, int, 0644);
 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
 static int dvb_usb_anysee_delsys;
 module_param_named(delsys, dvb_usb_anysee_delsys, int, 0644);
 MODULE_PARM_DESC(delsys, "select delivery mode (0=DVB-C, 1=DVB-T)");
 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

 static DEFINE_MUTEX(anysee_usb_mutex);

 static int anysee_ctrl_msg(struct dvb_usb_device *d, u8 *sbuf, u8 slen,
 	u8 *rbuf, u8 rlen)
 {
 	struct anysee_state *state = d->priv;
 	int act_len, ret;
 	u8 buf[64];

 	if (slen > sizeof(buf))
 		slen = sizeof(buf);
 	memcpy(&buf[0], sbuf, slen);
 	buf[60] = state->seq++;

 	if (mutex_lock_interruptible(&anysee_usb_mutex) < 0)
 		return -EAGAIN;

 	/* We need receive one message more after dvb_usb_generic_rw due
 	   to weird transaction flow, which is 1 x send + 2 x receive. */
 	ret = dvb_usb_generic_rw(d, buf, sizeof(buf), buf, sizeof(buf), 0);

 	if (!ret) {
 		/* receive 2nd answer */
 		ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev,
 			d->props.generic_bulk_ctrl_endpoint), buf, sizeof(buf),
 			&act_len, 2000);
 		if (ret)
 			err("%s: recv bulk message failed: %d", __func__, ret);
 		else {
 			deb_xfer("<<< ");
 			debug_dump(buf, act_len, deb_xfer);
 		}
 	}

 	/* read request, copy returned data to return buf */
 	if (!ret && rbuf && rlen)
 		memcpy(rbuf, buf, rlen);

 	mutex_unlock(&anysee_usb_mutex);

 	return ret;
 }

 static int anysee_read_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
 {
 	u8 buf[] = {CMD_REG_READ, reg >> 8, reg & 0xff, 0x01};
 	int ret;
 	ret = anysee_ctrl_msg(d, buf, sizeof(buf), val, 1);
 	deb_info("%s: reg:%04x val:%02x\n", __func__, reg, *val);
 	return ret;
 }

 static int anysee_write_reg(struct dvb_usb_device *d, u16 reg, u8 val)
 {
 	u8 buf[] = {CMD_REG_WRITE, reg >> 8, reg & 0xff, 0x01, val};
 	deb_info("%s: reg:%04x val:%02x\n", __func__, reg, val);
 	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
 }

 static int anysee_get_hw_info(struct dvb_usb_device *d, u8 *id)
 {
 	u8 buf[] = {CMD_GET_HW_INFO};
 	return anysee_ctrl_msg(d, buf, sizeof(buf), id, 3);
 }

 static int anysee_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
 	u8 buf[] = {CMD_STREAMING_CTRL, (u8)onoff, 0x00};
 	deb_info("%s: onoff:%02x\n", __func__, onoff);
 	return anysee_ctrl_msg(adap->dev, buf, sizeof(buf), NULL, 0);
 }

 static int anysee_led_ctrl(struct dvb_usb_device *d, u8 mode, u8 interval)
 {
 	u8 buf[] = {CMD_LED_AND_IR_CTRL, 0x01, mode, interval};
 	deb_info("%s: state:%02x interval:%02x\n", __func__, mode, interval);
 	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
 }

 static int anysee_ir_ctrl(struct dvb_usb_device *d, u8 onoff)
 {
 	u8 buf[] = {CMD_LED_AND_IR_CTRL, 0x02, onoff};
 	deb_info("%s: onoff:%02x\n", __func__, onoff);
 	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
 }

 static int anysee_init(struct dvb_usb_device *d)
 {
 	int ret;
 	/* LED light */
 	ret = anysee_led_ctrl(d, 0x01, 0x03);
 	if (ret)
 		return ret;

 	/* enable IR */
 	ret = anysee_ir_ctrl(d, 1);
 	if (ret)
 		return ret;

 	return 0;
 }

 /* I2C */
 static int anysee_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 	int num)
 {
 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
 	int ret = 0, inc, i = 0;

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

 	while (i < num) {
 		if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 			u8 buf[6];
 			buf[0] = CMD_I2C_READ;
 			buf[1] = msg[i].addr + 1;
 			buf[2] = msg[i].buf[0];
 			buf[3] = 0x00;
 			buf[4] = 0x00;
 			buf[5] = 0x01;
 			ret = anysee_ctrl_msg(d, buf, sizeof(buf), msg[i+1].buf,
 				msg[i+1].len);
 			inc = 2;
 		} else {
 			u8 buf[4+msg[i].len];
 			buf[0] = CMD_I2C_WRITE;
 			buf[1] = msg[i].addr;
 			buf[2] = msg[i].len;
 			buf[3] = 0x01;
 			memcpy(&buf[4], msg[i].buf, msg[i].len);
 			ret = anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
 			inc = 1;
 		}
 		if (ret)
 			break;

 		i += inc;
 	}

 	mutex_unlock(&d->i2c_mutex);

 	return ret ? ret : i;
 }

 static u32 anysee_i2c_func(struct i2c_adapter *adapter)
 {
 	return I2C_FUNC_I2C;
 }

 static struct i2c_algorithm anysee_i2c_algo = {
 	.master_xfer   = anysee_master_xfer,
 	.functionality = anysee_i2c_func,
 };

 static int anysee_mt352_demod_init(struct dvb_frontend *fe)
 {
 	static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x28 };
 	static u8 reset[]          = { RESET,      0x80 };
 	static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
 	static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0x20 };
 	static u8 gpp_ctl_cfg[]    = { GPP_CTL,    0x33 };
 	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };

 	mt352_write(fe, clock_config,   sizeof(clock_config));
 	udelay(200);
 	mt352_write(fe, reset,          sizeof(reset));
 	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));

 	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
 	mt352_write(fe, gpp_ctl_cfg,    sizeof(gpp_ctl_cfg));
 	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));

 	return 0;
 }

 /* Callbacks for DVB USB */
 static struct tda10023_config anysee_tda10023_config = {
 	.demod_address = 0x1a,
 	.invert = 0,
 	.xtal   = 16000000,
 	.pll_m  = 11,
 	.pll_p  = 3,
 	.pll_n  = 1,
 	.output_mode = TDA10023_OUTPUT_MODE_PARALLEL_C,
 	.deltaf = 0xfeeb,
 };

 static struct mt352_config anysee_mt352_config = {
 	.demod_address = 0x1e,
 	.demod_init    = anysee_mt352_demod_init,
 };

 static struct zl10353_config anysee_zl10353_config = {
 	.demod_address = 0x1e,
 	.parallel_ts = 1,
 };

 static int anysee_frontend_attach(struct dvb_usb_adapter *adap)
 {
 	int ret;
 	struct anysee_state *state = adap->dev->priv;
 	u8 hw_info[3];
 	u8 io_d; /* IO port D */

 	/* check which hardware we have
 	   We must do this call two times to get reliable values (hw bug). */
 	ret = anysee_get_hw_info(adap->dev, hw_info);
 	if (ret)
 		return ret;
 	ret = anysee_get_hw_info(adap->dev, hw_info);
 	if (ret)
 		return ret;

 	/* Meaning of these info bytes are guessed. */
 	info("firmware version:%d.%d.%d hardware id:%d",
 		0, hw_info[1], hw_info[2], hw_info[0]);

 	ret = anysee_read_reg(adap->dev, 0xb0, &io_d); /* IO port D */
 	if (ret)
 		return ret;
 	deb_info("%s: IO port D:%02x\n", __func__, io_d);

 	/* Select demod using trial and error method. */

 	/* Try to attach demodulator in following order:
 	      model      demod     hw  firmware
 	   1. E30        MT352     02  0.2.1
 	   2. E30        ZL10353   02  0.2.1
 	   3. E30 Combo  ZL10353   0f  0.1.2    DVB-T/C combo
 	   4. E30 Plus   ZL10353   06  0.1.0
 	   5. E30C Plus  TDA10023  0a  0.1.0    rev 0.2
 	      E30C Plus  TDA10023  0f  0.1.2    rev 0.4
 	      E30 Combo  TDA10023  0f  0.1.2    DVB-T/C combo
 	*/

 	/* Zarlink MT352 DVB-T demod inside of Samsung DNOS404ZH102A NIM */
 	adap->fe = dvb_attach(mt352_attach, &anysee_mt352_config,
 			      &adap->dev->i2c_adap);
 	if (adap->fe != NULL) {
 		state->tuner = DVB_PLL_THOMSON_DTT7579;
 		return 0;
 	}

 	/* Zarlink ZL10353 DVB-T demod inside of Samsung DNOS404ZH103A NIM */
 	adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
 			      &adap->dev->i2c_adap);
 	if (adap->fe != NULL) {
 		state->tuner = DVB_PLL_THOMSON_DTT7579;
 		return 0;
 	}

 	/* for E30 Combo Plus DVB-T demodulator */
 	if (dvb_usb_anysee_delsys) {
 		ret = anysee_write_reg(adap->dev, 0xb0, 0x01);
 		if (ret)
 			return ret;

 		/* Zarlink ZL10353 DVB-T demod */
 		adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
 				      &adap->dev->i2c_adap);
 		if (adap->fe != NULL) {
 			state->tuner = DVB_PLL_SAMSUNG_DTOS403IH102A;
 			return 0;
 		}
 	}

 	/* connect demod on IO port D for TDA10023 & ZL10353 */
 	ret = anysee_write_reg(adap->dev, 0xb0, 0x25);
 	if (ret)
 		return ret;

 	/* Zarlink ZL10353 DVB-T demod inside of Samsung DNOS404ZH103A NIM */
 	adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
 			      &adap->dev->i2c_adap);
 	if (adap->fe != NULL) {
 		state->tuner = DVB_PLL_THOMSON_DTT7579;
 		return 0;
 	}

 	/* IO port E - E30C rev 0.4 board requires this */
 	ret = anysee_write_reg(adap->dev, 0xb1, 0xa7);
 	if (ret)
 		return ret;

 	/* Philips TDA10023 DVB-C demod */
 	adap->fe = dvb_attach(tda10023_attach, &anysee_tda10023_config,
 			      &adap->dev->i2c_adap, 0x48);
 	if (adap->fe != NULL) {
 		state->tuner = DVB_PLL_SAMSUNG_DTOS403IH102A;
 		return 0;
 	}

 	/* return IO port D to init value for safe */
 	ret = anysee_write_reg(adap->dev, 0xb0, io_d);
 	if (ret)
 		return ret;

 	err("Unkown Anysee version: %02x %02x %02x. "\
 	    "Please report the <linux-dvb@linuxtv.org>.",
 	    hw_info[0], hw_info[1], hw_info[2]);

 	return -ENODEV;
 }

 static int anysee_tuner_attach(struct dvb_usb_adapter *adap)
 {
 	struct anysee_state *state = adap->dev->priv;
 	deb_info("%s: \n", __func__);

 	switch (state->tuner) {
 	case DVB_PLL_THOMSON_DTT7579:
 		/* Thomson dtt7579 (not sure) PLL inside of:
 		   Samsung DNOS404ZH102A NIM
 		   Samsung DNOS404ZH103A NIM */
 		dvb_attach(dvb_pll_attach, adap->fe, 0x61,
 			   NULL, DVB_PLL_THOMSON_DTT7579);
 		break;
 	case DVB_PLL_SAMSUNG_DTOS403IH102A:
 		/* Unknown PLL inside of Samsung DTOS403IH102A tuner module */
 		dvb_attach(dvb_pll_attach, adap->fe, 0xc0,
 			   &adap->dev->i2c_adap, DVB_PLL_SAMSUNG_DTOS403IH102A);
 		break;
 	}

 	return 0;
 }

 static int anysee_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
 	u8 buf[] = {CMD_GET_IR_CODE};
 	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
 	u8 ircode[2];
 	int i, ret;

 	ret = anysee_ctrl_msg(d, buf, sizeof(buf), &ircode[0], 2);
 	if (ret)
 		return ret;

 	*event = 0;
 	*state = REMOTE_NO_KEY_PRESSED;

 	for (i = 0; i < d->props.rc_key_map_size; i++) {
 		if (rc5_custom(&keymap[i]) == ircode[0] &&
 		    rc5_data(&keymap[i]) == ircode[1]) {
 			*event = keymap[i].event;
 			*state = REMOTE_KEY_PRESSED;
 			return 0;
 		}
 	}
 	return 0;
 }

 static struct dvb_usb_rc_key anysee_rc_keys[] = {
 	{ 0x0100, KEY_0 },
 	{ 0x0101, KEY_1 },
 	{ 0x0102, KEY_2 },
 	{ 0x0103, KEY_3 },
 	{ 0x0104, KEY_4 },
 	{ 0x0105, KEY_5 },
 	{ 0x0106, KEY_6 },
 	{ 0x0107, KEY_7 },
 	{ 0x0108, KEY_8 },
 	{ 0x0109, KEY_9 },
 	{ 0x010a, KEY_POWER },
 	{ 0x010b, KEY_DOCUMENTS },    /* * */
 	{ 0x0119, KEY_FAVORITES },
 	{ 0x0120, KEY_SLEEP },
 	{ 0x0121, KEY_MODE },         /* 4:3 / 16:9 select */
 	{ 0x0122, KEY_ZOOM },
 	{ 0x0147, KEY_TEXT },
 	{ 0x0116, KEY_TV },           /* TV / radio select */
 	{ 0x011e, KEY_LANGUAGE },     /* Second Audio Program */
 	{ 0x011a, KEY_SUBTITLE },
 	{ 0x011b, KEY_CAMERA },       /* screenshot */
 	{ 0x0142, KEY_MUTE },
 	{ 0x010e, KEY_MENU },
 	{ 0x010f, KEY_EPG },
 	{ 0x0117, KEY_INFO },
 	{ 0x0110, KEY_EXIT },
 	{ 0x0113, KEY_VOLUMEUP },
 	{ 0x0112, KEY_VOLUMEDOWN },
 	{ 0x0111, KEY_CHANNELUP },
 	{ 0x0114, KEY_CHANNELDOWN },
 	{ 0x0115, KEY_OK },
 	{ 0x011d, KEY_RED },
 	{ 0x011f, KEY_GREEN },
 	{ 0x011c, KEY_YELLOW },
 	{ 0x0144, KEY_BLUE },
 	{ 0x010c, KEY_SHUFFLE },      /* snapshot */
 	{ 0x0148, KEY_STOP },
 	{ 0x0150, KEY_PLAY },
 	{ 0x0151, KEY_PAUSE },
 	{ 0x0149, KEY_RECORD },
 	{ 0x0118, KEY_PREVIOUS },     /* |<< */
 	{ 0x010d, KEY_NEXT },         /* >>| */
 	{ 0x0124, KEY_PROG1 },        /* F1 */
 	{ 0x0125, KEY_PROG2 },        /* F2 */
 };

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

 static int anysee_probe(struct usb_interface *intf,
 			const struct usb_device_id *id)
 {
 	struct dvb_usb_device *d;
 	struct usb_host_interface *alt;
 	int ret;

 	/* There is one interface with two alternate settings.
 	   Alternate setting 0 is for bulk transfer.
 	   Alternate setting 1 is for isochronous transfer.
 	   We use bulk transfer (alternate setting 0). */
 	if (intf->num_altsetting < 1)
 		return -ENODEV;

 	ret = dvb_usb_device_init(intf, &anysee_properties, THIS_MODULE, &d,
 		adapter_nr);
 	if (ret)
 		return ret;

 	alt = usb_altnum_to_altsetting(intf, 0);
 	if (alt == NULL) {
 		deb_info("%s: no alt found!\n", __func__);
 		return -ENODEV;
 	}

 	ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
 		alt->desc.bAlternateSetting);
 	if (ret)
 		return ret;

 	if (d)
 		ret = anysee_init(d);

 	return ret;
 }

 static struct usb_device_id anysee_table[] = {
 	{ USB_DEVICE(USB_VID_CYPRESS, USB_PID_ANYSEE) },
 	{ USB_DEVICE(USB_VID_AMT,     USB_PID_ANYSEE) },
 	{ }		/* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, anysee_table);

 static struct dvb_usb_device_properties anysee_properties = {
 	.caps             = DVB_USB_IS_AN_I2C_ADAPTER,

 	.usb_ctrl         = DEVICE_SPECIFIC,

 	.size_of_priv     = sizeof(struct anysee_state),

 	.num_adapters = 1,
 	.adapter = {
 		{
 			.streaming_ctrl   = anysee_streaming_ctrl,
 			.frontend_attach  = anysee_frontend_attach,
 			.tuner_attach     = anysee_tuner_attach,
 			.stream = {
 				.type = USB_BULK,
 				.count = 8,
 				.endpoint = 0x82,
 				.u = {
 					.bulk = {
 						.buffersize = (16*512),
 					}
 				}
 			},
 		}
 	},

 	.rc_key_map       = anysee_rc_keys,
 	.rc_key_map_size  = ARRAY_SIZE(anysee_rc_keys),
 	.rc_query         = anysee_rc_query,
 	.rc_interval      = 200,  /* windows driver uses 500ms */

 	.i2c_algo         = &anysee_i2c_algo,

 	.generic_bulk_ctrl_endpoint = 1,

 	.num_device_descs = 1,
 	.devices = {
 		{
 			.name = "Anysee DVB USB2.0",
 			.cold_ids = {NULL},
 			.warm_ids = {&anysee_table[0],
 				     &anysee_table[1], NULL},
 		},
 	}
 };

 static struct usb_driver anysee_driver = {
 	.name       = "dvb_usb_anysee",
 	.probe      = anysee_probe,
 	.disconnect = dvb_usb_device_exit,
 	.id_table   = anysee_table,
 };

 /* module stuff */
 static int __init anysee_module_init(void)
 {
 	int ret;

 	ret = usb_register(&anysee_driver);
 	if (ret)
 		err("%s: usb_register failed. Error number %d", __func__, ret);

 	return ret;
 }

 static void __exit anysee_module_exit(void)
 {
 	/* deregister this driver from the USB subsystem */
 	usb_deregister(&anysee_driver);
 }

 module_init(anysee_module_init);
 module_exit(anysee_module_exit);

 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 MODULE_DESCRIPTION("Driver Anysee E30 DVB-C & DVB-T USB2.0");
 MODULE_LICENSE("GPL");
	/*
	* DVB USB Linux driver for Anysee E30 DVB-C & DVB-T USB2.0 receiver
	*
	* Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*
	* TODO:
	* - add smart card reader support for Conditional Access (CA)
	*
	* Card reader in Anysee is nothing more than ISO 7816 card reader.
	* There is no hardware CAM in any Anysee device sold.
	* In my understanding it should be implemented by making own module
	* for ISO 7816 card reader, like dvb_ca_en50221 is implemented. This
	* module registers serial interface that can be used to communicate
	* with any ISO 7816 smart card.
	*
	* Any help according to implement serial smart card reader support
	* is highly welcome!
	*/

	#include "anysee.h"
	#include "tda1002x.h"
	#include "mt352.h"
	#include "mt352_priv.h"
	#include "zl10353.h"

	/* debug */
	static int dvb_usb_anysee_debug;
	module_param_named(debug, dvb_usb_anysee_debug, int, 0644);
	MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
	static int dvb_usb_anysee_delsys;
	module_param_named(delsys, dvb_usb_anysee_delsys, int, 0644);
	MODULE_PARM_DESC(delsys, "select delivery mode (0=DVB-C, 1=DVB-T)");
	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

	static DEFINE_MUTEX(anysee_usb_mutex);

	static int anysee_ctrl_msg(struct dvb_usb_device d, u8 sbuf, u8 slen,
	u8 *rbuf, u8 rlen)
	{
	struct anysee_state *state = d->priv;
	int act_len, ret;
	u8 buf[64];

	if (slen > sizeof(buf))
	slen = sizeof(buf);
	memcpy(&buf[0], sbuf, slen);
	buf[60] = state->seq++;

	if (mutex_lock_interruptible(&anysee_usb_mutex) < 0)
	return -EAGAIN;

	/* We need receive one message more after dvb_usb_generic_rw due
	to weird transaction flow, which is 1 x send + 2 x receive. */
	ret = dvb_usb_generic_rw(d, buf, sizeof(buf), buf, sizeof(buf), 0);

	if (!ret) {
	/* receive 2nd answer */
	ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev,
	d->props.generic_bulk_ctrl_endpoint), buf, sizeof(buf),
	&act_len, 2000);
	if (ret)
	err("%s: recv bulk message failed: %d", __func__, ret);
	else {
	deb_xfer("<<< ");
	debug_dump(buf, act_len, deb_xfer);
	}
	}

	/* read request, copy returned data to return buf */
	if (!ret && rbuf && rlen)
	memcpy(rbuf, buf, rlen);

	mutex_unlock(&anysee_usb_mutex);

	return ret;
	}

	static int anysee_read_reg(struct dvb_usb_device d, u16 reg, u8 val)
	{
	u8 buf[] = {CMD_REG_READ, reg >> 8, reg & 0xff, 0x01};
	int ret;
	ret = anysee_ctrl_msg(d, buf, sizeof(buf), val, 1);
	deb_info("%s: reg:%04x val:%02x\n", __func__, reg, *val);
	return ret;
	}

	static int anysee_write_reg(struct dvb_usb_device *d, u16 reg, u8 val)
	{
	u8 buf[] = {CMD_REG_WRITE, reg >> 8, reg & 0xff, 0x01, val};
	deb_info("%s: reg:%04x val:%02x\n", __func__, reg, val);
	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
	}

	static int anysee_get_hw_info(struct dvb_usb_device d, u8 id)
	{
	u8 buf[] = {CMD_GET_HW_INFO};
	return anysee_ctrl_msg(d, buf, sizeof(buf), id, 3);
	}

	static int anysee_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
	{
	u8 buf[] = {CMD_STREAMING_CTRL, (u8)onoff, 0x00};
	deb_info("%s: onoff:%02x\n", __func__, onoff);
	return anysee_ctrl_msg(adap->dev, buf, sizeof(buf), NULL, 0);
	}

	static int anysee_led_ctrl(struct dvb_usb_device *d, u8 mode, u8 interval)
	{
	u8 buf[] = {CMD_LED_AND_IR_CTRL, 0x01, mode, interval};
	deb_info("%s: state:%02x interval:%02x\n", __func__, mode, interval);
	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
	}

	static int anysee_ir_ctrl(struct dvb_usb_device *d, u8 onoff)
	{
	u8 buf[] = {CMD_LED_AND_IR_CTRL, 0x02, onoff};
	deb_info("%s: onoff:%02x\n", __func__, onoff);
	return anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
	}

	static int anysee_init(struct dvb_usb_device *d)
	{
	int ret;
	/* LED light */
	ret = anysee_led_ctrl(d, 0x01, 0x03);
	if (ret)
	return ret;

	/* enable IR */
	ret = anysee_ir_ctrl(d, 1);
	if (ret)
	return ret;

	return 0;
	}

	/* I2C */
	static int anysee_master_xfer(struct i2c_adapter adap, struct i2c_msg msg,
	int num)
	{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int ret = 0, inc, i = 0;

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

	while (i < num) {
	if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
	u8 buf[6];
	buf[0] = CMD_I2C_READ;
	buf[1] = msg[i].addr + 1;
	buf[2] = msg[i].buf[0];
	buf[3] = 0x00;
	buf[4] = 0x00;
	buf[5] = 0x01;
	ret = anysee_ctrl_msg(d, buf, sizeof(buf), msg[i+1].buf,
	msg[i+1].len);
	inc = 2;
	} else {
	u8 buf[4+msg[i].len];
	buf[0] = CMD_I2C_WRITE;
	buf[1] = msg[i].addr;
	buf[2] = msg[i].len;
	buf[3] = 0x01;
	memcpy(&buf[4], msg[i].buf, msg[i].len);
	ret = anysee_ctrl_msg(d, buf, sizeof(buf), NULL, 0);
	inc = 1;
	}
	if (ret)
	break;

	i += inc;
	}

	mutex_unlock(&d->i2c_mutex);

	return ret ? ret : i;
	}

	static u32 anysee_i2c_func(struct i2c_adapter *adapter)
	{
	return I2C_FUNC_I2C;
	}

	static struct i2c_algorithm anysee_i2c_algo = {
	.master_xfer = anysee_master_xfer,
	.functionality = anysee_i2c_func,
	};

	static int anysee_mt352_demod_init(struct dvb_frontend *fe)
	{
	static u8 clock_config[] = { CLOCK_CTL, 0x38, 0x28 };
	static u8 reset[] = { RESET, 0x80 };
	static u8 adc_ctl_1_cfg[] = { ADC_CTL_1, 0x40 };
	static u8 agc_cfg[] = { AGC_TARGET, 0x28, 0x20 };
	static u8 gpp_ctl_cfg[] = { GPP_CTL, 0x33 };
	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };

	mt352_write(fe, clock_config, sizeof(clock_config));
	udelay(200);
	mt352_write(fe, reset, sizeof(reset));
	mt352_write(fe, adc_ctl_1_cfg, sizeof(adc_ctl_1_cfg));

	mt352_write(fe, agc_cfg, sizeof(agc_cfg));
	mt352_write(fe, gpp_ctl_cfg, sizeof(gpp_ctl_cfg));
	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));

	return 0;
	}

	/* Callbacks for DVB USB */
	static struct tda10023_config anysee_tda10023_config = {
	.demod_address = 0x1a,
	.invert = 0,
	.xtal = 16000000,
	.pll_m = 11,
	.pll_p = 3,
	.pll_n = 1,
	.output_mode = TDA10023_OUTPUT_MODE_PARALLEL_C,
	.deltaf = 0xfeeb,
	};

	static struct mt352_config anysee_mt352_config = {
	.demod_address = 0x1e,
	.demod_init = anysee_mt352_demod_init,
	};

	static struct zl10353_config anysee_zl10353_config = {
	.demod_address = 0x1e,
	.parallel_ts = 1,
	};

	static int anysee_frontend_attach(struct dvb_usb_adapter *adap)
	{
	int ret;
	struct anysee_state *state = adap->dev->priv;
	u8 hw_info[3];
	u8 io_d; /* IO port D */

	/* check which hardware we have
	We must do this call two times to get reliable values (hw bug). */
	ret = anysee_get_hw_info(adap->dev, hw_info);
	if (ret)
	return ret;
	ret = anysee_get_hw_info(adap->dev, hw_info);
	if (ret)
	return ret;

	/* Meaning of these info bytes are guessed. */
	info("firmware version:%d.%d.%d hardware id:%d",
	0, hw_info[1], hw_info[2], hw_info[0]);

	ret = anysee_read_reg(adap->dev, 0xb0, &io_d); /* IO port D */
	if (ret)
	return ret;
	deb_info("%s: IO port D:%02x\n", __func__, io_d);

	/* Select demod using trial and error method. */

	/* Try to attach demodulator in following order:
	model demod hw firmware
	1. E30 MT352 02 0.2.1
	2. E30 ZL10353 02 0.2.1
	3. E30 Combo ZL10353 0f 0.1.2 DVB-T/C combo
	4. E30 Plus ZL10353 06 0.1.0
	5. E30C Plus TDA10023 0a 0.1.0 rev 0.2
	E30C Plus TDA10023 0f 0.1.2 rev 0.4
	E30 Combo TDA10023 0f 0.1.2 DVB-T/C combo
	*/

	/* Zarlink MT352 DVB-T demod inside of Samsung DNOS404ZH102A NIM */
	adap->fe = dvb_attach(mt352_attach, &anysee_mt352_config,
	&adap->dev->i2c_adap);
	if (adap->fe != NULL) {
	state->tuner = DVB_PLL_THOMSON_DTT7579;
	return 0;
	}

	/* Zarlink ZL10353 DVB-T demod inside of Samsung DNOS404ZH103A NIM */
	adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
	&adap->dev->i2c_adap);
	if (adap->fe != NULL) {
	state->tuner = DVB_PLL_THOMSON_DTT7579;
	return 0;
	}

	/* for E30 Combo Plus DVB-T demodulator */
	if (dvb_usb_anysee_delsys) {
	ret = anysee_write_reg(adap->dev, 0xb0, 0x01);
	if (ret)
	return ret;

	/* Zarlink ZL10353 DVB-T demod */
	adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
	&adap->dev->i2c_adap);
	if (adap->fe != NULL) {
	state->tuner = DVB_PLL_SAMSUNG_DTOS403IH102A;
	return 0;
	}
	}

	/* connect demod on IO port D for TDA10023 & ZL10353 */
	ret = anysee_write_reg(adap->dev, 0xb0, 0x25);
	if (ret)
	return ret;

	/* Zarlink ZL10353 DVB-T demod inside of Samsung DNOS404ZH103A NIM */
	adap->fe = dvb_attach(zl10353_attach, &anysee_zl10353_config,
	&adap->dev->i2c_adap);
	if (adap->fe != NULL) {
	state->tuner = DVB_PLL_THOMSON_DTT7579;
	return 0;
	}

	/* IO port E - E30C rev 0.4 board requires this */
	ret = anysee_write_reg(adap->dev, 0xb1, 0xa7);
	if (ret)
	return ret;

	/* Philips TDA10023 DVB-C demod */
	adap->fe = dvb_attach(tda10023_attach, &anysee_tda10023_config,
	&adap->dev->i2c_adap, 0x48);
	if (adap->fe != NULL) {
	state->tuner = DVB_PLL_SAMSUNG_DTOS403IH102A;
	return 0;
	}

	/* return IO port D to init value for safe */
	ret = anysee_write_reg(adap->dev, 0xb0, io_d);
	if (ret)
	return ret;

	err("Unkown Anysee version: %02x %02x %02x. "\
	"Please report the <linux-dvb@linuxtv.org>.",
	hw_info[0], hw_info[1], hw_info[2]);

	return -ENODEV;
	}

	static int anysee_tuner_attach(struct dvb_usb_adapter *adap)
	{
	struct anysee_state *state = adap->dev->priv;
	deb_info("%s: \n", __func__);

	switch (state->tuner) {
	case DVB_PLL_THOMSON_DTT7579:
	/* Thomson dtt7579 (not sure) PLL inside of:
	Samsung DNOS404ZH102A NIM
	Samsung DNOS404ZH103A NIM */
	dvb_attach(dvb_pll_attach, adap->fe, 0x61,
	NULL, DVB_PLL_THOMSON_DTT7579);
	break;
	case DVB_PLL_SAMSUNG_DTOS403IH102A:
	/* Unknown PLL inside of Samsung DTOS403IH102A tuner module */
	dvb_attach(dvb_pll_attach, adap->fe, 0xc0,
	&adap->dev->i2c_adap, DVB_PLL_SAMSUNG_DTOS403IH102A);
	break;
	}

	return 0;
	}

	static int anysee_rc_query(struct dvb_usb_device d, u32 event, int *state)
	{
	u8 buf[] = {CMD_GET_IR_CODE};
	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
	u8 ircode[2];
	int i, ret;

	ret = anysee_ctrl_msg(d, buf, sizeof(buf), &ircode[0], 2);
	if (ret)
	return ret;

	*event = 0;
	*state = REMOTE_NO_KEY_PRESSED;

	for (i = 0; i < d->props.rc_key_map_size; i++) {
	if (rc5_custom(&keymap[i]) == ircode[0] &&
	rc5_data(&keymap[i]) == ircode[1]) {
	*event = keymap[i].event;
	*state = REMOTE_KEY_PRESSED;
	return 0;
	}
	}
	return 0;
	}

	static struct dvb_usb_rc_key anysee_rc_keys[] = {
	{ 0x0100, KEY_0 },
	{ 0x0101, KEY_1 },
	{ 0x0102, KEY_2 },
	{ 0x0103, KEY_3 },
	{ 0x0104, KEY_4 },
	{ 0x0105, KEY_5 },
	{ 0x0106, KEY_6 },
	{ 0x0107, KEY_7 },
	{ 0x0108, KEY_8 },
	{ 0x0109, KEY_9 },
	{ 0x010a, KEY_POWER },
	{ 0x010b, KEY_DOCUMENTS }, /* * */
	{ 0x0119, KEY_FAVORITES },
	{ 0x0120, KEY_SLEEP },
	{ 0x0121, KEY_MODE }, /* 4:3 / 16:9 select */
	{ 0x0122, KEY_ZOOM },
	{ 0x0147, KEY_TEXT },
	{ 0x0116, KEY_TV }, /* TV / radio select */
	{ 0x011e, KEY_LANGUAGE }, /* Second Audio Program */
	{ 0x011a, KEY_SUBTITLE },
	{ 0x011b, KEY_CAMERA }, /* screenshot */
	{ 0x0142, KEY_MUTE },
	{ 0x010e, KEY_MENU },
	{ 0x010f, KEY_EPG },
	{ 0x0117, KEY_INFO },
	{ 0x0110, KEY_EXIT },
	{ 0x0113, KEY_VOLUMEUP },
	{ 0x0112, KEY_VOLUMEDOWN },
	{ 0x0111, KEY_CHANNELUP },
	{ 0x0114, KEY_CHANNELDOWN },
	{ 0x0115, KEY_OK },
	{ 0x011d, KEY_RED },
	{ 0x011f, KEY_GREEN },
	{ 0x011c, KEY_YELLOW },
	{ 0x0144, KEY_BLUE },
	{ 0x010c, KEY_SHUFFLE }, /* snapshot */
	{ 0x0148, KEY_STOP },
	{ 0x0150, KEY_PLAY },
	{ 0x0151, KEY_PAUSE },
	{ 0x0149, KEY_RECORD },
	{ 0x0118, KEY_PREVIOUS }, /* \|<< */
	{ 0x010d, KEY_NEXT }, /* >>\| */
	{ 0x0124, KEY_PROG1 }, /* F1 */
	{ 0x0125, KEY_PROG2 }, /* F2 */
	};

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

	static int anysee_probe(struct usb_interface *intf,
	const struct usb_device_id *id)
	{
	struct dvb_usb_device *d;
	struct usb_host_interface *alt;
	int ret;

	/* There is one interface with two alternate settings.
	Alternate setting 0 is for bulk transfer.
	Alternate setting 1 is for isochronous transfer.
	We use bulk transfer (alternate setting 0). */
	if (intf->num_altsetting < 1)
	return -ENODEV;

	ret = dvb_usb_device_init(intf, &anysee_properties, THIS_MODULE, &d,
	adapter_nr);
	if (ret)
	return ret;

	alt = usb_altnum_to_altsetting(intf, 0);
	if (alt == NULL) {
	deb_info("%s: no alt found!\n", __func__);
	return -ENODEV;
	}

	ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
	alt->desc.bAlternateSetting);
	if (ret)
	return ret;

	if (d)
	ret = anysee_init(d);

	return ret;
	}

	static struct usb_device_id anysee_table[] = {
	{ USB_DEVICE(USB_VID_CYPRESS, USB_PID_ANYSEE) },
	{ USB_DEVICE(USB_VID_AMT, USB_PID_ANYSEE) },
	{ } /* Terminating entry */
	};
	MODULE_DEVICE_TABLE(usb, anysee_table);

	static struct dvb_usb_device_properties anysee_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,

	.usb_ctrl = DEVICE_SPECIFIC,

	.size_of_priv = sizeof(struct anysee_state),

	.num_adapters = 1,
	.adapter = {
	{
	.streaming_ctrl = anysee_streaming_ctrl,
	.frontend_attach = anysee_frontend_attach,
	.tuner_attach = anysee_tuner_attach,
	.stream = {
	.type = USB_BULK,
	.count = 8,
	.endpoint = 0x82,
	.u = {
	.bulk = {
	.buffersize = (16*512),
	}
	}
	},
	}
	},

	.rc_key_map = anysee_rc_keys,
	.rc_key_map_size = ARRAY_SIZE(anysee_rc_keys),
	.rc_query = anysee_rc_query,
	.rc_interval = 200, /* windows driver uses 500ms */

	.i2c_algo = &anysee_i2c_algo,

	.generic_bulk_ctrl_endpoint = 1,

	.num_device_descs = 1,
	.devices = {
	{
	.name = "Anysee DVB USB2.0",
	.cold_ids = {NULL},
	.warm_ids = {&anysee_table[0],
	&anysee_table[1], NULL},
	},
	}
	};

	static struct usb_driver anysee_driver = {
	.name = "dvb_usb_anysee",
	.probe = anysee_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table = anysee_table,
	};

	/* module stuff */
	static int __init anysee_module_init(void)
	{
	int ret;

	ret = usb_register(&anysee_driver);
	if (ret)
	err("%s: usb_register failed. Error number %d", __func__, ret);

	return ret;
	}

	static void __exit anysee_module_exit(void)
	{
	/* deregister this driver from the USB subsystem */
	usb_deregister(&anysee_driver);
	}

	module_init(anysee_module_init);
	module_exit(anysee_module_exit);

	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
	MODULE_DESCRIPTION("Driver Anysee E30 DVB-C & DVB-T USB2.0");
	MODULE_LICENSE("GPL");