SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/cx18/cx18-dvb.c

   1 /*
   2  *  cx18 functions for DVB support
   3  *
   4  *  Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "cx18-version.h"
  23 #include "cx18-dvb.h"
  24 #include "cx18-streams.h"
  25 #include "cx18-cards.h"
  26 #include "s5h1409.h"
  27
  28 /* Wait until the MXL500X driver is merged */
  29 #ifdef HAVE_MXL500X
  30 #include "mxl500x.h"
  31 #endif
  32
  33 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  34
  35 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  36
  37 #ifdef HAVE_MXL500X
  38 static struct mxl500x_config hauppauge_hvr1600_tuner = {
  39         .delsys    = MXL500x_MODE_ATSC,
  40         .octf      = MXL500x_OCTF_CH,
  41         .xtal_freq = 16000000,
  42         .iflo_freq = 5380000,
  43         .ref_freq  = 322800000,
  44         .rssi_ena  = MXL_RSSI_ENABLE,
  45         .addr      = 0xC6 >> 1,
  46 };
  47
  48 static struct s5h1409_config hauppauge_hvr1600_config = {
  49         .demod_address = 0x32 >> 1,
  50         .output_mode   = S5H1409_SERIAL_OUTPUT,
  51         .gpio          = S5H1409_GPIO_ON,
  52         .qam_if        = 44000,
  53         .inversion     = S5H1409_INVERSION_OFF,
  54         .status_mode   = S5H1409_DEMODLOCKING,
  55         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  56
  57 };
  58 #endif
  59
  60 static int dvb_register(struct cx18_stream *stream);
  61
  62 /* Kernel DVB framework calls this when the feed needs to start.
  63  * The CX18 framework should enable the transport DMA handling
  64  * and queue processing.
  65  */
  66 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
  67 {
  68         struct dvb_demux *demux = feed->demux;
  69         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
  70         struct cx18 *cx = stream->cx;
  71         int ret = -EINVAL;
  72         u32 v;
  73
  74         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  75                         feed->pid, feed->index);
  76         switch (cx->card->type) {
  77         case CX18_CARD_HVR_1600_ESMT:
  78         case CX18_CARD_HVR_1600_SAMSUNG:
  79                 v = read_reg(CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  80                 v |= 0x00400000; /* Serial Mode */
  81                 v |= 0x00002000; /* Data Length - Byte */
  82                 v |= 0x00010000; /* Error - Polarity */
  83                 v |= 0x00020000; /* Error - Passthru */
  84                 v |= 0x000c0000; /* Error - Ignore */
  85                 write_reg(v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  86                 break;
  87
  88         default:
  89                 /* Assumption - Parallel transport - Signalling
  90                  * undefined or default.
  91                  */
  92                 break;
  93         }
  94
  95         if (!demux->dmx.frontend)
  96                 return -EINVAL;
  97
  98         if (stream) {
  99                 mutex_lock(&stream->dvb.feedlock);
 100                 if (stream->dvb.feeding++ == 0) {
 101                         CX18_DEBUG_INFO("Starting Transport DMA\n");
 102                         ret = cx18_start_v4l2_encode_stream(stream);
 103                 } else
 104                         ret = 0;
 105                 mutex_unlock(&stream->dvb.feedlock);
 106         }
 107
 108         return ret;
 109 }
 110
 111 /* Kernel DVB framework calls this when the feed needs to stop. */
 112 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 113 {
 114         struct dvb_demux *demux = feed->demux;
 115         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 116         struct cx18 *cx = stream->cx;
 117         int ret = -EINVAL;
 118
 119         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 120                         feed->pid, feed->index);
 121
 122         if (stream) {
 123                 mutex_lock(&stream->dvb.feedlock);
 124                 if (--stream->dvb.feeding == 0) {
 125                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 126                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 127                 } else
 128                         ret = 0;
 129                 mutex_unlock(&stream->dvb.feedlock);
 130         }
 131
 132         return ret;
 133 }
 134
 135 int cx18_dvb_register(struct cx18_stream *stream)
 136 {
 137         struct cx18 *cx = stream->cx;
 138         struct cx18_dvb *dvb = &stream->dvb;
 139         struct dvb_adapter *dvb_adapter;
 140         struct dvb_demux *dvbdemux;
 141         struct dmx_demux *dmx;
 142         int ret;
 143
 144         if (!dvb)
 145                 return -EINVAL;
 146
 147         ret = dvb_register_adapter(&dvb->dvb_adapter,
 148                         CX18_DRIVER_NAME,
 149                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 150         if (ret < 0)
 151                 goto err_out;
 152
 153         dvb_adapter = &dvb->dvb_adapter;
 154
 155         dvbdemux = &dvb->demux;
 156
 157         dvbdemux->priv = (void *)stream;
 158
 159         dvbdemux->filternum = 256;
 160         dvbdemux->feednum = 256;
 161         dvbdemux->start_feed = cx18_dvb_start_feed;
 162         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 163         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 164                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 165         ret = dvb_dmx_init(dvbdemux);
 166         if (ret < 0)
 167                 goto err_dvb_unregister_adapter;
 168
 169         dmx = &dvbdemux->dmx;
 170
 171         dvb->hw_frontend.source = DMX_FRONTEND_0;
 172         dvb->mem_frontend.source = DMX_MEMORY_FE;
 173         dvb->dmxdev.filternum = 256;
 174         dvb->dmxdev.demux = dmx;
 175
 176         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 177         if (ret < 0)
 178                 goto err_dvb_dmx_release;
 179
 180         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 181         if (ret < 0)
 182                 goto err_dvb_dmxdev_release;
 183
 184         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 185         if (ret < 0)
 186                 goto err_remove_hw_frontend;
 187
 188         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 189         if (ret < 0)
 190                 goto err_remove_mem_frontend;
 191
 192         ret = dvb_register(stream);
 193         if (ret < 0)
 194                 goto err_disconnect_frontend;
 195
 196         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 197
 198         CX18_INFO("DVB Frontend registered\n");
 199         mutex_init(&dvb->feedlock);
 200         dvb->enabled = 1;
 201         return ret;
 202
 203 err_disconnect_frontend:
 204         dmx->disconnect_frontend(dmx);
 205 err_remove_mem_frontend:
 206         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 207 err_remove_hw_frontend:
 208         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 209 err_dvb_dmxdev_release:
 210         dvb_dmxdev_release(&dvb->dmxdev);
 211 err_dvb_dmx_release:
 212         dvb_dmx_release(dvbdemux);
 213 err_dvb_unregister_adapter:
 214         dvb_unregister_adapter(dvb_adapter);
 215 err_out:
 216         return ret;
 217 }
 218
 219 void cx18_dvb_unregister(struct cx18_stream *stream)
 220 {
 221         struct cx18 *cx = stream->cx;
 222         struct cx18_dvb *dvb = &stream->dvb;
 223         struct dvb_adapter *dvb_adapter;
 224         struct dvb_demux *dvbdemux;
 225         struct dmx_demux *dmx;
 226
 227         CX18_INFO("unregister DVB\n");
 228
 229         dvb_adapter = &dvb->dvb_adapter;
 230         dvbdemux = &dvb->demux;
 231         dmx = &dvbdemux->dmx;
 232
 233         dmx->close(dmx);
 234         dvb_net_release(&dvb->dvbnet);
 235         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 236         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 237         dvb_dmxdev_release(&dvb->dmxdev);
 238         dvb_dmx_release(dvbdemux);
 239         dvb_unregister_frontend(dvb->fe);
 240         dvb_frontend_detach(dvb->fe);
 241         dvb_unregister_adapter(dvb_adapter);
 242 }
 243
 244 /* All the DVB attach calls go here, this function get's modified
 245  * for each new card. No other function in this file needs
 246  * to change.
 247  */
 248 static int dvb_register(struct cx18_stream *stream)
 249 {
 250         struct cx18_dvb *dvb = &stream->dvb;
 251         struct cx18 *cx = stream->cx;
 252         int ret = 0;
 253
 254         switch (cx->card->type) {
 255 /* Wait until the MXL500X driver is merged */
 256 #ifdef HAVE_MXL500X
 257         case CX18_CARD_HVR_1600_ESMT:
 258         case CX18_CARD_HVR_1600_SAMSUNG:
 259                 dvb->fe = dvb_attach(s5h1409_attach,
 260                         &hauppauge_hvr1600_config,
 261                         &cx->i2c_adap[0]);
 262                 if (dvb->fe != NULL) {
 263                         dvb_attach(mxl500x_attach, dvb->fe,
 264                                 &hauppauge_hvr1600_tuner,
 265                                 &cx->i2c_adap[0]);
 266                         ret = 0;
 267                 }
 268                 break;
 269 #endif
 270         default:
 271                 /* No Digital Tv Support */
 272                 break;
 273         }
 274
 275         if (dvb->fe == NULL) {
 276                 CX18_ERR("frontend initialization failed\n");
 277                 return -1;
 278         }
 279
 280         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 281         if (ret < 0) {
 282                 if (dvb->fe->ops.release)
 283                         dvb->fe->ops.release(dvb->fe);
 284                 return ret;
 285         }
 286
 287         return ret;
 288 }