path: root/drivers/media/dvb/cinergyT2/cinergyT2.c

/*
 * TerraTec Cinergy T�/qanu USB2 DVB-T adapter.
 *
 * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
 *		    Holger Waechtler <holger@qanu.de>
 *
 *  Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
 *
 * 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.
 *
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/pci.h>
#include <linux/input.h>
#include <linux/dvb/frontend.h>
#include <linux/mutex.h>

#include "dmxdev.h"
#include "dvb_demux.h"
#include "dvb_net.h"

#ifdef CONFIG_DVB_CINERGYT2_TUNING
	#define STREAM_URB_COUNT (CONFIG_DVB_CINERGYT2_STREAM_URB_COUNT)
	#define STREAM_BUF_SIZE (CONFIG_DVB_CINERGYT2_STREAM_BUF_SIZE)
	#define QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_QUERY_INTERVAL)
	#ifdef CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE
		#define RC_QUERY_INTERVAL (CONFIG_DVB_CINERGYT2_RC_QUERY_INTERVAL)
		#define ENABLE_RC (1)
	#endif
#else
	#define STREAM_URB_COUNT (32)
	#define STREAM_BUF_SIZE (512)	/* bytes */
	#define ENABLE_RC (1)
	#define RC_QUERY_INTERVAL (50)	/* milliseconds */
	#define QUERY_INTERVAL (333)	/* milliseconds */
#endif

#define DRIVER_NAME "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver"

static int debug;
module_param_named(debug, debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");

#define dprintk(level, args...)						\
do {									\
	if ((debug & level)) {						\
		printk("%s: %s(): ", KBUILD_MODNAME,			\
		       __FUNCTION__);					\
		printk(args); }						\
} while (0)

enum cinergyt2_ep1_cmd {
	CINERGYT2_EP1_PID_TABLE_RESET		= 0x01,
	CINERGYT2_EP1_PID_SETUP			= 0x02,
	CINERGYT2_EP1_CONTROL_STREAM_TRANSFER	= 0x03,
	CINERGYT2_EP1_SET_TUNER_PARAMETERS	= 0x04,
	CINERGYT2_EP1_GET_TUNER_STATUS		= 0x05,
	CINERGYT2_EP1_START_SCAN		= 0x06,
	CINERGYT2_EP1_CONTINUE_SCAN		= 0x07,
	CINERGYT2_EP1_GET_RC_EVENTS		= 0x08,
	CINERGYT2_EP1_SLEEP_MODE		= 0x09
};

struct dvbt_set_parameters_msg {
	uint8_t cmd;
	uint32_t freq;
	uint8_t bandwidth;
	uint16_t tps;
	uint8_t flags;
} __attribute__((packed));

struct dvbt_get_status_msg {
	uint32_t freq;
	uint8_t bandwidth;
	uint16_t tps;
	uint8_t flags;
	uint16_t gain;
	uint8_t snr;
	uint32_t viterbi_error_rate;
	uint32_t rs_error_rate;
	uint32_t uncorrected_block_count;
	uint8_t lock_bits;
	uint8_t prev_lock_bits;
} __attribute__((packed));

static struct dvb_frontend_info cinergyt2_fe_info = {
	.name = DRIVER_NAME,
	.type = FE_OFDM,
	.frequency_min = 174000000,
	.frequency_max = 862000000,
	.frequency_stepsize = 166667,
	.caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
		FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
		FE_CAN_FEC_AUTO |
		FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
		FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
		FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS
};

struct cinergyt2 {
	struct dvb_demux demux;
	struct usb_device *udev;
	struct mutex sem;
	struct dvb_adapter adapter;
	struct dvb_device *fedev;
	struct dmxdev dmxdev;
	struct dvb_net dvbnet;

	int streaming;
	int sleeping;

	struct dvbt_set_parameters_msg param;
	struct dvbt_get_status_msg status;
	struct delayed_work query_work;

	wait_queue_head_t poll_wq;
	int pending_fe_events;
	int disconnect_pending;
	atomic_t inuse;

	void *streambuf;
	dma_addr_t streambuf_dmahandle;
	struct urb *stream_urb [STREAM_URB_COUNT];

#ifdef ENABLE_RC
	struct input_dev *rc_input_dev;
	char phys[64];
	struct delayed_work rc_query_work;
	int rc_input_event;
	u32 rc_last_code;
	unsigned long last_event_jiffies;
#endif
};

enum {
	CINERGYT2_RC_EVENT_TYPE_NONE = 0x00,
	CINERGYT2_RC_EVENT_TYPE_NEC  = 0x01,
	CINERGYT2_RC_EVENT_TYPE_RC5  = 0x02
};

struct cinergyt2_rc_event {
	char type;
	uint32_t value;
} __attribute__((packed));

static const uint32_t rc_keys[] = {
	CINERGYT2_RC_EVENT_TYPE_NEC,	0xfe01eb04,	KEY_POWER,
	CINERGYT2_RC_EVENT_TYPE_NEC,	0xfd02eb04,	KEY_1,
	CINERGYT2_RC_EVENT_TYPE_NEC,	0xfc03eb04,	KEY_2,
	CINERGYT2_RC_EVENT_TYPE_NEC,	0xfb04eb04,	KEY_3,
	CINERGYT2_RC_EVENT_TYPE_NEC,	0xfa05eb04,	KEY_4