release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c

   1 /* dvb-usb-dvb.c is part of the DVB USB library.
   2  *
   3  * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
   4  * see dvb-usb-init.c for copyright information.
   5  *
   6  * This file contains functions for initializing and handling the
   7  * linux-dvb API.
   8  */
   9 #include "dvb-usb-common.h"
  10
  11 /* does the complete input transfer handling */
  12 static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
  13 {
  14         struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
  15         int newfeedcount,ret;
  16
  17         if (adap == NULL)
  18                 return -ENODEV;
  19
  20         newfeedcount = adap->feedcount + (onoff ? 1 : -1);
  21
  22         /* stop feed before setting a new pid if there will be no pid anymore */
  23         if (newfeedcount == 0) {
  24                 deb_ts("stop feeding\n");
  25                 usb_urb_kill(&adap->stream);
  26
  27                 if (adap->props.streaming_ctrl != NULL)
  28                         if ((ret = adap->props.streaming_ctrl(adap,0)))
  29                                 err("error while stopping stream.");
  30         }
  31
  32         adap->feedcount = newfeedcount;
  33
  34         /* activate the pid on the device specific pid_filter */
  35         deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ?
  36                 "yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ?
  37                 "on" : "off");
  38         if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  39                 adap->pid_filtering &&
  40                 adap->props.pid_filter != NULL)
  41                 adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff);
  42
  43         /* start the feed if this was the first feed and there is still a feed
  44          * for reception.
  45          */
  46         if (adap->feedcount == onoff && adap->feedcount > 0) {
  47                 deb_ts("submitting all URBs\n");
  48                 usb_urb_submit(&adap->stream);
  49
  50                 deb_ts("controlling pid parser\n");
  51                 if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  52                         adap->props.caps & DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
  53                         adap->props.pid_filter_ctrl != NULL)
  54                         if (adap->props.pid_filter_ctrl(adap,adap->pid_filtering) < 0)
  55                                 err("could not handle pid_parser");
  56
  57                 deb_ts("start feeding\n");
  58                 if (adap->props.streaming_ctrl != NULL)
  59                         if (adap->props.streaming_ctrl(adap,1)) {
  60                                 err("error while enabling fifo.");
  61                                 return -ENODEV;
  62                         }
  63
  64         }
  65         return 0;
  66 }
  67
  68 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  69 {
  70         deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
  71         return dvb_usb_ctrl_feed(dvbdmxfeed,1);
  72 }
  73
  74 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
  75 {
  76         deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
  77         return dvb_usb_ctrl_feed(dvbdmxfeed,0);
  78 }
  79
  80 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
  81 {
  82         int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
  83                                        adap->dev->owner, &adap->dev->udev->dev,
  84                                        adapter_nums);
  85
  86         if (ret < 0) {
  87                 deb_info("dvb_register_adapter failed: error %d", ret);
  88                 goto err;
  89         }
  90         adap->dvb_adap.priv = adap;
  91         adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;
  92
  93         if (adap->dev->props.read_mac_address) {
  94                 if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
  95                         info("MAC address: %pM",adap->dvb_adap.proposed_mac);
  96                 else
  97                         err("MAC address reading failed.");
  98         }
  99
 100
 101         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 102         adap->demux.priv             = adap;
 103
 104         adap->demux.feednum          = adap->demux.filternum = adap->max_feed_count;
 105         adap->demux.start_feed       = dvb_usb_start_feed;
 106         adap->demux.stop_feed        = dvb_usb_stop_feed;
 107         adap->demux.write_to_decoder = NULL;
 108         if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
 109                 err("dvb_dmx_init failed: error %d",ret);
 110                 goto err_dmx;
 111         }
 112
 113         adap->dmxdev.filternum       = adap->demux.filternum;
 114         adap->dmxdev.demux           = &adap->demux.dmx;
 115         adap->dmxdev.capabilities    = 0;
 116         if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
 117                 err("dvb_dmxdev_init failed: error %d",ret);
 118                 goto err_dmx_dev;
 119         }
 120
 121         dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
 122
 123         adap->state |= DVB_USB_ADAP_STATE_DVB;
 124         return 0;
 125
 126 err_dmx_dev:
 127         dvb_dmx_release(&adap->demux);
 128 err_dmx:
 129         dvb_unregister_adapter(&adap->dvb_adap);
 130 err:
 131         return ret;
 132 }
 133
 134 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 135 {
 136         if (adap->state & DVB_USB_ADAP_STATE_DVB) {
 137                 deb_info("unregistering DVB part\n");
 138                 dvb_net_release(&adap->dvb_net);
 139                 adap->demux.dmx.close(&adap->demux.dmx);
 140                 dvb_dmxdev_release(&adap->dmxdev);
 141                 dvb_dmx_release(&adap->demux);
 142                 dvb_unregister_adapter(&adap->dvb_adap);
 143                 adap->state &= ~DVB_USB_ADAP_STATE_DVB;
 144         }
 145         return 0;
 146 }
 147
 148 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
 149 {
 150         struct dvb_usb_adapter *adap = fe->dvb->priv;
 151
 152         dvb_usb_device_power_ctrl(adap->dev, 1);
 153
 154         if (adap->fe_init)
 155                 adap->fe_init(fe);
 156
 157         return 0;
 158 }
 159
 160 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
 161 {
 162         struct dvb_usb_adapter *adap = fe->dvb->priv;
 163
 164         if (adap->fe_sleep)
 165                 adap->fe_sleep(fe);
 166
 167         return dvb_usb_device_power_ctrl(adap->dev, 0);
 168 }
 169
 170 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 171 {
 172         if (adap->props.frontend_attach == NULL) {
 173                 err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id);
 174                 return 0;
 175         }
 176
 177         /* re-assign sleep and wakeup functions */
 178         if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) {
 179                 adap->fe_init  = adap->fe->ops.init;  adap->fe->ops.init  = dvb_usb_fe_wakeup;
 180                 adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep;
 181
 182                 if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
 183                         err("Frontend registration failed.");
 184                         dvb_frontend_detach(adap->fe);
 185                         adap->fe = NULL;
 186                         return -ENODEV;
 187                 }
 188
 189                 /* only attach the tuner if the demod is there */
 190                 if (adap->props.tuner_attach != NULL)
 191                         adap->props.tuner_attach(adap);
 192         } else
 193                 err("no frontend was attached by '%s'",adap->dev->desc->name);
 194
 195         return 0;
 196 }
 197
 198 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 199 {
 200         if (adap->fe != NULL) {
 201                 dvb_unregister_frontend(adap->fe);
 202                 dvb_frontend_detach(adap->fe);
 203         }
 204         return 0;
 205 }