cxusb.c

来自「linux内核源码」· C语言 代码 · 共 803 行 · 第 1/2 页

/* DVB USB compliant linux driver for Conexant USB reference design.
 *
 * The Conexant reference design I saw on their website was only for analogue
 * capturing (using the cx25842). The box I took to write this driver (reverse
 * engineered) is the one labeled Medion MD95700. In addition to the cx25842
 * for analogue capturing it also has a cx22702 DVB-T demodulator on the main
 * board. Besides it has a atiremote (X10) and a USB2.0 hub onboard.
 *
 * Maybe it is a little bit premature to call this driver cxusb, but I assume
 * the USB protocol is identical or at least inherited from the reference
 * design, so it can be reused for the "analogue-only" device (if it will
 * appear at all).
 *
 * TODO: Use the cx25840-driver for the analogue part
 *
 * Copyright (C) 2005 Patrick Boettcher ([e-mail])
 * Copyright (C) 2006 Michael Krufky ([e-mail])
 * Copyright (C) 2006 Chris Pascoe ([e-mail])
 *
 *   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 "cxusb.h"

#include "cx22702.h"
#include "lgdt330x.h"
#include "mt352.h"
#include "mt352_priv.h"
#include "zl10353.h"

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

static int cxusb_ctrl_msg(struct dvb_usb_device *d,
			  u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
{
	int wo = (rbuf == NULL || rlen == 0); /* write-only */
	u8 sndbuf[1+wlen];
	memset(sndbuf, 0, 1+wlen);

	sndbuf[0] = cmd;
	memcpy(&sndbuf[1], wbuf, wlen);
	if (wo)
		dvb_usb_generic_write(d, sndbuf, 1+wlen);
	else
		dvb_usb_generic_rw(d, sndbuf, 1+wlen, rbuf, rlen, 0);

	return 0;
}

/* GPIO */
static void cxusb_gpio_tuner(struct dvb_usb_device *d, int onoff)
{
	struct cxusb_state *st = d->priv;
	u8 o[2], i;

	if (st->gpio_write_state[GPIO_TUNER] == onoff)
		return;

	o[0] = GPIO_TUNER;
	o[1] = onoff;
	cxusb_ctrl_msg(d, CMD_GPIO_WRITE, o, 2, &i, 1);

	if (i != 0x01)
		deb_info("gpio_write failed.\n");

	st->gpio_write_state[GPIO_TUNER] = onoff;
}

/* I2C */
static int cxusb_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 two i2c messages at a time is not handled yet. TODO.");

	for (i = 0; i < num; i++) {

		if (d->udev->descriptor.idVendor == USB_VID_MEDION)
			switch (msg[i].addr) {
			case 0x63:
				cxusb_gpio_tuner(d, 0);
				break;
			default:
				cxusb_gpio_tuner(d, 1);
				break;
			}

		/* read request */
		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
			u8 obuf[3+msg[i].len], ibuf[1+msg[i+1].len];
			obuf[0] = msg[i].len;
			obuf[1] = msg[i+1].len;
			obuf[2] = msg[i].addr;
			memcpy(&obuf[3], msg[i].buf, msg[i].len);

			if (cxusb_ctrl_msg(d, CMD_I2C_READ,
					   obuf, 3+msg[i].len,
					   ibuf, 1+msg[i+1].len) < 0)
				break;

			if (ibuf[0] != 0x08)
				deb_i2c("i2c read may have failed\n");

			memcpy(msg[i+1].buf, &ibuf[1], msg[i+1].len);

			i++;
		} else { /* write */
			u8 obuf[2+msg[i].len], ibuf;
			obuf[0] = msg[i].addr;
			obuf[1] = msg[i].len;
			memcpy(&obuf[2], msg[i].buf, msg[i].len);

			if (cxusb_ctrl_msg(d, CMD_I2C_WRITE, obuf,
					   2+msg[i].len, &ibuf,1) < 0)
				break;
			if (ibuf != 0x08)
				deb_i2c("i2c write may have failed\n");
		}
	}

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

static u32 cxusb_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

static struct i2c_algorithm cxusb_i2c_algo = {
	.master_xfer   = cxusb_i2c_xfer,
	.functionality = cxusb_i2c_func,
};

static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 b = 0;
	if (onoff)
		return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
	else
		return cxusb_ctrl_msg(d, CMD_POWER_OFF, &b, 1, NULL, 0);
}

static int cxusb_bluebird_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 b = 0;
	if (onoff)
		return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
	else
		return 0;
}

static int cxusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	u8 buf[2] = { 0x03, 0x00 };
	if (onoff)
		cxusb_ctrl_msg(adap->dev, CMD_STREAMING_ON, buf, 2, NULL, 0);
	else
		cxusb_ctrl_msg(adap->dev, CMD_STREAMING_OFF, NULL, 0, NULL, 0);

	return 0;
}

static int cxusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
	u8 ircode[4];
	int i;

	cxusb_ctrl_msg(d, CMD_GET_IR_CODE, NULL, 0, ircode, 4);

	*event = 0;
	*state = REMOTE_NO_KEY_PRESSED;

	for (i = 0; i < d->props.rc_key_map_size; i++) {
		if (keymap[i].custom == ircode[2] &&
		    keymap[i].data == ircode[3]) {
			*event = keymap[i].event;
			*state = REMOTE_KEY_PRESSED;

			return 0;
		}
	}

	return 0;
}

static struct dvb_usb_rc_key dvico_mce_rc_keys[] = {
	{ 0xfe, 0x02, KEY_TV },
	{ 0xfe, 0x0e, KEY_MP3 },
	{ 0xfe, 0x1a, KEY_DVD },
	{ 0xfe, 0x1e, KEY_FAVORITES },
	{ 0xfe, 0x16, KEY_SETUP },
	{ 0xfe, 0x46, KEY_POWER2 },
	{ 0xfe, 0x0a, KEY_EPG },
	{ 0xfe, 0x49, KEY_BACK },
	{ 0xfe, 0x4d, KEY_MENU },
	{ 0xfe, 0x51, KEY_UP },
	{ 0xfe, 0x5b, KEY_LEFT },
	{ 0xfe, 0x5f, KEY_RIGHT },
	{ 0xfe, 0x53, KEY_DOWN },
	{ 0xfe, 0x5e, KEY_OK },
	{ 0xfe, 0x59, KEY_INFO },
	{ 0xfe, 0x55, KEY_TAB },
	{ 0xfe, 0x0f, KEY_PREVIOUSSONG },/* Replay */
	{ 0xfe, 0x12, KEY_NEXTSONG },	/* Skip */
	{ 0xfe, 0x42, KEY_ENTER	 },	/* Windows/Start */
	{ 0xfe, 0x15, KEY_VOLUMEUP },
	{ 0xfe, 0x05, KEY_VOLUMEDOWN },
	{ 0xfe, 0x11, KEY_CHANNELUP },
	{ 0xfe, 0x09, KEY_CHANNELDOWN },
	{ 0xfe, 0x52, KEY_CAMERA },
	{ 0xfe, 0x5a, KEY_TUNER },	/* Live */
	{ 0xfe, 0x19, KEY_OPEN },
	{ 0xfe, 0x0b, KEY_1 },
	{ 0xfe, 0x17, KEY_2 },
	{ 0xfe, 0x1b, KEY_3 },
	{ 0xfe, 0x07, KEY_4 },
	{ 0xfe, 0x50, KEY_5 },
	{ 0xfe, 0x54, KEY_6 },
	{ 0xfe, 0x48, KEY_7 },
	{ 0xfe, 0x4c, KEY_8 },
	{ 0xfe, 0x58, KEY_9 },
	{ 0xfe, 0x13, KEY_ANGLE },	/* Aspect */
	{ 0xfe, 0x03, KEY_0 },
	{ 0xfe, 0x1f, KEY_ZOOM },
	{ 0xfe, 0x43, KEY_REWIND },
	{ 0xfe, 0x47, KEY_PLAYPAUSE },
	{ 0xfe, 0x4f, KEY_FASTFORWARD },
	{ 0xfe, 0x57, KEY_MUTE },
	{ 0xfe, 0x0d, KEY_STOP },
	{ 0xfe, 0x01, KEY_RECORD },
	{ 0xfe, 0x4e, KEY_POWER },
};

static struct dvb_usb_rc_key dvico_portable_rc_keys[] = {
	{ 0xfc, 0x02, KEY_SETUP },       /* Profile */
	{ 0xfc, 0x43, KEY_POWER2 },
	{ 0xfc, 0x06, KEY_EPG },
	{ 0xfc, 0x5a, KEY_BACK },
	{ 0xfc, 0x05, KEY_MENU },
	{ 0xfc, 0x47, KEY_INFO },
	{ 0xfc, 0x01, KEY_TAB },
	{ 0xfc, 0x42, KEY_PREVIOUSSONG },/* Replay */
	{ 0xfc, 0x49, KEY_VOLUMEUP },
	{ 0xfc, 0x09, KEY_VOLUMEDOWN },
	{ 0xfc, 0x54, KEY_CHANNELUP },
	{ 0xfc, 0x0b, KEY_CHANNELDOWN },
	{ 0xfc, 0x16, KEY_CAMERA },
	{ 0xfc, 0x40, KEY_TUNER },	/* ATV/DTV */
	{ 0xfc, 0x45, KEY_OPEN },
	{ 0xfc, 0x19, KEY_1 },
	{ 0xfc, 0x18, KEY_2 },
	{ 0xfc, 0x1b, KEY_3 },
	{ 0xfc, 0x1a, KEY_4 },
	{ 0xfc, 0x58, KEY_5 },
	{ 0xfc, 0x59, KEY_6 },
	{ 0xfc, 0x15, KEY_7 },
	{ 0xfc, 0x14, KEY_8 },
	{ 0xfc, 0x17, KEY_9 },
	{ 0xfc, 0x44, KEY_ANGLE },	/* Aspect */
	{ 0xfc, 0x55, KEY_0 },
	{ 0xfc, 0x07, KEY_ZOOM },
	{ 0xfc, 0x0a, KEY_REWIND },
	{ 0xfc, 0x08, KEY_PLAYPAUSE },
	{ 0xfc, 0x4b, KEY_FASTFORWARD },
	{ 0xfc, 0x5b, KEY_MUTE },
	{ 0xfc, 0x04, KEY_STOP },
	{ 0xfc, 0x56, KEY_RECORD },
	{ 0xfc, 0x57, KEY_POWER },
	{ 0xfc, 0x41, KEY_UNKNOWN },    /* INPUT */
	{ 0xfc, 0x00, KEY_UNKNOWN },    /* HD */
};

static int cxusb_dee1601_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;
}

static int cxusb_mt352_demod_init(struct dvb_frontend* fe)
{	/* used in both lgz201 and th7579 */
	static u8 clock_config []  = { CLOCK_CTL,  0x38, 0x29 };
	static u8 reset []         = { RESET,      0x80 };
	static u8 adc_ctl_1_cfg [] = { ADC_CTL_1,  0x40 };
	static u8 agc_cfg []       = { AGC_TARGET, 0x24, 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;
}

static struct cx22702_config cxusb_cx22702_config = {
	.demod_address = 0x63,
	.output_mode = CX22702_PARALLEL_OUTPUT,
};

static struct lgdt330x_config cxusb_lgdt3303_config = {
	.demod_address = 0x0e,
	.demod_chip    = LGDT3303,
};

static struct mt352_config cxusb_dee1601_config = {
	.demod_address = 0x0f,
	.demod_init    = cxusb_dee1601_demod_init,
};

static struct zl10353_config cxusb_zl10353_dee1601_config = {
	.demod_address = 0x0f,
	.parallel_ts = 1,
};

static struct mt352_config cxusb_mt352_config = {
	/* used in both lgz201 and th7579 */
	.demod_address = 0x0f,
	.demod_init    = cxusb_mt352_demod_init,
};

/* Callbacks for DVB USB */
static int cxusb_fmd1216me_tuner_attach(struct dvb_usb_adapter *adap)
{
	dvb_attach(dvb_pll_attach, adap->fe, 0x61, &adap->dev->i2c_adap,
		   DVB_PLL_FMD1216ME);
	return 0;
}

static int cxusb_dee1601_tuner_attach(struct dvb_usb_adapter *adap)
{
	dvb_attach(dvb_pll_attach, adap->fe, 0x61,
		   NULL, DVB_PLL_THOMSON_DTT7579);
	return 0;
}

static int cxusb_lgz201_tuner_attach(struct dvb_usb_adapter *adap)
{
	dvb_attach(dvb_pll_attach, adap->fe, 0x61, NULL, DVB_PLL_LG_Z201);
	return 0;
}

static int cxusb_dtt7579_tuner_attach(struct dvb_usb_adapter *adap)
{
	dvb_attach(dvb_pll_attach, adap->fe, 0x60,
		   NULL, DVB_PLL_THOMSON_DTT7579);
	return 0;
}

static int cxusb_lgh064f_tuner_attach(struct dvb_usb_adapter *adap)
{
	dvb_attach(dvb_pll_attach, adap->fe, 0x61, &adap->dev->i2c_adap,
		   DVB_PLL_LG_TDVS_H06XF);
	return 0;
}

static int cxusb_cx22702_frontend_attach(struct dvb_usb_adapter *adap)
{
	u8 b;
	if (usb_set_interface(adap->dev->udev, 0, 6) < 0)
		err("set interface failed");

	cxusb_ctrl_msg(adap->dev, CMD_DIGITAL, NULL, 0, &b, 1);

	if ((adap->fe = dvb_attach(cx22702_attach, &cxusb_cx22702_config,
				   &adap->dev->i2c_adap)) != NULL)
		return 0;

	return -EIO;
}