as102_drv.h

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/*
 * Abilis Systems Single DVB-T Receiver
 * Copyright (C) 2008 Pierrick Hascoet <[email protected]>
 *
 * 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.
 *
 * 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/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"

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

#define dprintk(debug, args...) \
    do { if (debug) {   \
        pr_debug("%s: ", __func__); \
        printk(args);   \
    } } while (0)

#ifdef TRACE
#define ENTER() pr_debug(">> enter %s\n", __func__)
#define LEAVE() pr_debug("<< leave %s\n", __func__)
#else
#define ENTER()
#define LEAVE()
#endif

#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;

    /* demodulator stats */
    struct as10x_demod_stats demod_stats;
    /* signal strength */
    uint16_t signal_strength;
    /* bit error rate */
    uint32_t ber;

    /* 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);

int as102_dvb_register_fe(struct as102_dev_t *dev, struct dvb_frontend *fe);
int as102_dvb_unregister_fe(struct dvb_frontend *dev);