path: root/drivers/media/dvb/dvb-usb/af9005.c

/* DVB USB compliant Linux driver for the Afatech 9005
 * USB1.1 DVB-T receiver.
 *
 * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
 *
 * Thanks to Afatech who kindly provided information.
 *
 * 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.
 *
 * see Documentation/dvb/REDME.dvb-usb for more information
 */
#include "af9005.h"

/* debug */
int dvb_usb_af9005_debug;
module_param_named(debug, dvb_usb_af9005_debug, int, 0644);
MODULE_PARM_DESC(debug,
		 "set debugging level (1=info,xfer=2,rc=4,reg=8,i2c=16,fw=32 (or-able))."
		 DVB_USB_DEBUG_STATUS);
/* enable obnoxious led */
int dvb_usb_af9005_led = 1;
module_param_named(led, dvb_usb_af9005_led, bool, 0644);
MODULE_PARM_DESC(led, "enable led (default: 1).");

/* eeprom dump */
static int dvb_usb_af9005_dump_eeprom;
module_param_named(dump_eeprom, dvb_usb_af9005_dump_eeprom, int, 0);
MODULE_PARM_DESC(dump_eeprom, "dump contents of the eeprom.");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

/* remote control decoder */
static int (*rc_decode) (struct dvb_usb_device *d, u8 *data, int len,
		u32 *event, int *state);
static void *rc_keys;
static int *rc_keys_size;

u8 regmask[8] = { 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };

struct af9005_device_state {
	u8 sequence;
	int led_state;
};

static int af9005_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen,
			  u8 *rbuf, u16 rlen, int delay_ms)
{
	int actlen, ret = -ENOMEM;

	if (wbuf == NULL || wlen == 0)
		return -EINVAL;

	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
		return ret;

	deb_xfer(">>> ");
	debug_dump(wbuf, wlen, deb_xfer);

	ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev,
						    2), wbuf, wlen,
			   &actlen, 2000);

	if (ret)
		err("bulk message failed: %d (%d/%d)", ret, wlen, actlen);
	else
		ret = actlen != wlen ? -1 : 0;

	/* an answer is expected, and no error before */
	if (!ret && rbuf && rlen) {
		if (delay_ms)
			msleep(delay_ms);

		ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev,
							    0x01), rbuf,
				   rlen, &actlen, 2000);

		if (ret)
			err("recv bulk message failed: %d", ret);
		else {
			deb_xfer("<<< ");
			debug_dump(rbuf, actlen, deb_xfer);
		}
	}

	mutex_unlock(&d->usb_mutex);
	return ret;
}

static int af9005_generic_read_write(struct dvb_usb_device *d, u16 reg,
			      int readwrite, int type, u8 * values, int len)
{
	struct af9005_device_state *st = d->priv;
	u8 obuf[16] = { 0 };
	u8 ibuf[17] = { 0 };
	u8 command;
	int