xref: /linux/drivers/media/usb/as102/as102_drv.h (revision b601d9a5d668119219d1db95cbe04fdc38eaf5a4)

/*
 * Abilis Systems Single DVB-T Receiver
 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
 *
 * 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, 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.
 */

#include <linux/usb.h>
#include <dvb_demux.h>
#include <dvb_frontend.h>
#include <dmxdev.h>
#include "as10x_cmd.h"
#include "as102_usb_drv.h"

#define DRIVER_FULL_NAME "Abilis Systems as10x usb driver"
#define DRIVER_NAME "as10x_usb"

#define debug	as102_debug
extern struct usb_driver as102_usb_driver;
extern int elna_enable;

#define AS102_DEVICE_MAJOR	192

#define AS102_USB_BUF_SIZE	512
#define MAX_STREAM_URB		32

struct as10x_bus_adapter_t {
	struct usb_device *usb_dev;
	/* bus token lock */
	struct mutex lock;
	/* low level interface for bus adapter */
	union as10x_bus_token_t {
		/* usb token */
		struct as10x_usb_token_cmd_t usb;
	} token;

	/* token cmd xfer id */
	uint16_t cmd_xid;

	/* as10x command and response for dvb interface*/
	struct as10x_cmd_t *cmd, *rsp;

	/* bus adapter private ops callback */
	struct as102_priv_ops_t *ops;
};

struct as102_dev_t {
	const char *name;
	struct as10x_bus_adapter_t bus_adap;
	struct list_head device_entry;
	struct kref kref;
	uint8_t elna_cfg;

	struct dvb_adapter dvb_adap;
	struct dvb_frontend *dvb_fe;
	struct dvb_demux dvb_dmx;
	struct dmxdev dvb_dmxdev;

	/* timer handle to trig ts stream download */
	struct timer_list timer_handle;

	struct mutex sem;
	dma_addr_t dma_addr;
	void *stream;
	int streaming;
	struct urb *stream_urb[MAX_STREAM_URB];
};

int as102_dvb_register(struct as102_dev_t *dev);
void as102_dvb_unregister(struct as102_dev_t *dev);

/* FIXME: move it to a separate header */
struct dvb_frontend *as102_attach(const char *name,
				  struct as10x_bus_adapter_t *bus_adap,
				  uint8_t elna_cfg);