anysee.c

trident tm5600的linux驱动

/*
 * DVB USB Linux driver for Anysee E30 DVB-C & DVB-T USB2.0 receiver
 *
 * Copyright (C) 2007 Antti Palosaari <[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; 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);
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 struct 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, 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);