LXR linux/drivers/staging/media/as102/as102

   1/*
   2 * Abilis Systems Single DVB-T Receiver
   3 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; either version 2, or (at your option)
   8 * any later version.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20#include <linux/usb.h>
  21#include <dvb_demux.h>
  22#include <dvb_frontend.h>
  23#include <dmxdev.h>
  24#include "as10x_cmd.h"
  25#include "as102_usb_drv.h"
  26
  27#define DRIVER_FULL_NAME "Abilis Systems as10x usb driver"
  28#define DRIVER_NAME "as10x_usb"
  29
  30extern int as102_debug;
  31#define debug   as102_debug
  32extern struct usb_driver as102_usb_driver;
  33extern int elna_enable;
  34
  35#define dprintk(debug, args...) \
  36        do { if (debug) {       \
  37                pr_debug("%s: ", __func__);     \
  38                printk(args);   \
  39        } } while (0)
  40
  41#ifdef TRACE
  42#define ENTER() pr_debug(">> enter %s\n", __func__)
  43#define LEAVE() pr_debug("<< leave %s\n", __func__)
  44#else
  45#define ENTER()
  46#define LEAVE()
  47#endif
  48
  49#define AS102_DEVICE_MAJOR      192
  50
  51#define AS102_USB_BUF_SIZE      512
  52#define MAX_STREAM_URB          32
  53
  54struct as10x_bus_adapter_t {
  55        struct usb_device *usb_dev;
  56        /* bus token lock */
  57        struct mutex lock;
  58        /* low level interface for bus adapter */
  59        union as10x_bus_token_t {
  60                /* usb token */
  61                struct as10x_usb_token_cmd_t usb;
  62        } token;
  63
  64        /* token cmd xfer id */
  65        uint16_t cmd_xid;
  66
  67        /* as10x command and response for dvb interface*/
  68        struct as10x_cmd_t *cmd, *rsp;
  69
  70        /* bus adapter private ops callback */
  71        struct as102_priv_ops_t *ops;
  72};
  73
  74struct as102_dev_t {
  75        const char *name;
  76        struct as10x_bus_adapter_t bus_adap;
  77        struct list_head device_entry;
  78        struct kref kref;
  79        uint8_t elna_cfg;
  80
  81        struct dvb_adapter dvb_adap;
  82        struct dvb_frontend dvb_fe;
  83        struct dvb_demux dvb_dmx;
  84        struct dmxdev dvb_dmxdev;
  85
  86        /* demodulator stats */
  87        struct as10x_demod_stats demod_stats;
  88        /* signal strength */
  89        uint16_t signal_strength;
  90        /* bit error rate */
  91        uint32_t ber;
  92
  93        /* timer handle to trig ts stream download */
  94        struct timer_list timer_handle;
  95
  96        struct mutex sem;
  97        dma_addr_t dma_addr;
  98        void *stream;
  99        int streaming;
 100        struct urb *stream_urb[MAX_STREAM_URB];
 101};
 102
 103int as102_dvb_register(struct as102_dev_t *dev);
 104void as102_dvb_unregister(struct as102_dev_t *dev);
 105
 106int as102_dvb_register_fe(struct as102_dev_t *dev, struct dvb_frontend *fe);
 107int as102_dvb_unregister_fe(struct dvb_frontend *dev);
 108