path: root/drivers/media/dvb/dvb-usb/az6007.c

/*
 * Driver for AzureWave 6007 DVB-C/T USB2.0 and clones
 *
 * Copyright (c) Henry Wang <Henry.wang@AzureWave.com>
 *
 * This driver was made publicly available by Terratec, at:
 *	http://linux.terratec.de/files/TERRATEC_H7/20110323_TERRATEC_H7_Linux.tar.gz
 * The original driver's license is GPL, as declared with MODULE_LICENSE()
 *
 * Copyright (c) 2010-2011 Mauro Carvalho Chehab <mchehab@redhat.com>
 *	Driver modified by in order to work with upstream drxk driver, and
 *	tons of bugs got fixed.
 *
 * 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 under version 2 of the License.
 *
 * 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.
 */

#include "drxk.h"
#include "mt2063.h"
#include "dvb_ca_en50221.h"

#define DVB_USB_LOG_PREFIX "az6007"
#include "dvb-usb.h"

/* debug */
int dvb_usb_az6007_debug;
module_param_named(debug, dvb_usb_az6007_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))."
		 DVB_USB_DEBUG_STATUS);

#define deb_info(args...) dprintk(dvb_usb_az6007_debug, 0x01, args)
#define deb_xfer(args...) dprintk(dvb_usb_az6007_debug, 0x02, args)
#define deb_rc(args...)   dprintk(dvb_usb_az6007_debug, 0x04, args)
#define deb_fe(args...)   dprintk(dvb_usb_az6007_debug, 0x08, args)

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

/* Known requests (Cypress FX2 firmware + az6007 "private" ones*/

#define FX2_OED			0xb5
#define AZ6007_READ_DATA	0xb7
#define AZ6007_I2C_RD		0xb9
#define AZ6007_POWER		0xbc
#define AZ6007_I2C_WR		0xbd
#define FX2_SCON1		0xc0
#define AZ6007_TS_THROUGH	0xc7
#define AZ6007_READ_IR		0xb4

struct az6007_device_state {
	struct mutex		mutex;
	struct mutex		ca_mutex;
	struct dvb_ca_en50221	ca;
	unsigned		warm:1;
	int			(*gate_ctrl) (struct dvb_frontend *, int);
	unsigned char		data[4096];
};

static struct drxk_config terratec_h7_drxk = {
	.adr = 0x29,
	.parallel_ts = true,
	.dynamic_clk = true,
	.single_master = true,
	.enable_merr_cfg = true,
	.no_i2c_bridge = false,
	.chunk_size = 64,
	.mpeg_out_clk_strength = 0x02,
	.microcode_name = "dvb-usb-terratec-h7-drxk.fw",
};

static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
{
	struct dvb_usb_adapter *adap = fe->sec_priv;
	struct az6007_device_state *st;
	int status = 0;

	deb_info("%s: %s\n", __func__, enable ? "enable" : "disable");

	if (!adap)
		return -EINVAL;

	st = adap->dev->priv;

	if (!st)
		return -EINVAL;

	if (enable)
		status = st->gate_ctrl(fe, 1);
	else
		status = st->gate_ctrl(fe, 0);

	return status;
}

static struct mt2063_config az6007_mt2063_config = {
	.tuner_address = 0x60,
	.refclock = 36125000,
};

static int __az6007_read(struct usb_device *udev, u8 req, u16 value,
			    u16 index, u8 *b, int blen)
{
	int ret;

	ret = usb_control_msg(udev,
			      usb_rcvctrlpipe(udev, 0),
			      req,
			      USB_TYPE_VENDOR | USB_DIR_IN,
			      value, index, b, blen, 5000);
	if (ret < 0) {
		warn("usb read operation failed. (%d)", ret);
		return -EIO;
	}

	deb_xfer("in: req. %02x, val: %04x, ind: %04x, buffer: ", req, value,
		 index);
	debug_dump(b, blen, deb_xfer);

	return ret;
}

static int az6007_read(struct dvb_usb_device *d, u8 req, u16 value,
			    u16 index, u8 *b, int blen)
{
	struct az6007_device_state *st = d->priv;
	int ret;

	if (mutex_lock_interruptible(&st->mutex) < 0)
		return -EAGAIN;

	ret = __az6007_read(d->udev, req, value, index, b, blen);

	mutex_unlock(&st->mutex);

	return ret;
}

static int __az6007_write(struct usb_device *udev, u8 req, u16 value,
			     u16 index, u8 *b, int blen)
{
	int ret;

	deb_xfer("out: req. %02x, val: %04x, ind: %04x, buffer: ", req, value,
		 index);
	debug_dump(b, blen, deb_xfer);

	if (blen > 64) {
		err("az6007: tried to write %d bytes, but I2C max size is 64 bytes\n",
		    blen);
		return -EOPNOTSUPP;
	}

	ret = usb_control_msg(udev,
			      usb_sndctrlpipe(udev, 0),
			      req,
			      USB_TYPE_VENDOR | USB_DIR_OUT,
			      value, index, b, blen, 5000);
	if (ret != blen) {
		err("usb write operation failed. (%d)", ret);
		return -EIO;
	}

	return 0;
}

static int az6007_write(struct dvb_usb_device *d