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 #include "mxl5005s.h"
  28
  29 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  30
  31 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  32
  33 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
  34         .i2c_address     = 0xC6 >> 1,
  35         .if_freq         = IF_FREQ_5380000HZ,
  36         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
  37         .agc_mode        = MXL_SINGLE_AGC,
  38         .tracking_filter = MXL_TF_C_H,
  39         .rssi_enable     = MXL_RSSI_ENABLE,
  40         .cap_select      = MXL_CAP_SEL_ENABLE,
  41         .div_out         = MXL_DIV_OUT_4,
  42         .clock_out       = MXL_CLOCK_OUT_DISABLE,
  43         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
  44         .top             = MXL5005S_TOP_25P2,
  45         .mod_mode        = MXL_DIGITAL_MODE,
  46         .if_mode         = MXL_ZERO_IF,
  47         .AgcMasterByte   = 0x00,
  48 };
  49
  50 static struct s5h1409_config hauppauge_hvr1600_config = {
  51         .demod_address = 0x32 >> 1,
  52         .output_mode   = S5H1409_SERIAL_OUTPUT,
  53         .gpio          = S5H1409_GPIO_ON,
  54         .qam_if        = 44000,
  55         .inversion     = S5H1409_INVERSION_OFF,
  56         .status_mode   = S5H1409_DEMODLOCKING,
  57         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  58
  59 };
  60
  61 static int dvb_register(struct cx18_stream *stream);
  62
  63 /* Kernel DVB framework calls this when the feed needs to start.
  64  * The CX18 framework should enable the transport DMA handling
  65  * and queue processing.
  66  */
  67 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
  68 {
  69         struct dvb_demux *demux = feed->demux;
  70         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
  71         struct cx18 *cx = stream->cx;
  72         int ret = -EINVAL;
  73         u32 v;
  74
  75         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  76                         feed->pid, feed->index);
  77         switch (cx->card->type) {
  78         case CX18_CARD_HVR_1600_ESMT:
  79         case CX18_CARD_HVR_1600_SAMSUNG:
  80                 v = read_reg(CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  81                 v |= 0x00400000; /* Serial Mode */
  82                 v |= 0x00002000; /* Data Length - Byte */
  83                 v |= 0x00010000; /* Error - Polarity */
  84                 v |= 0x00020000; /* Error - Passthru */
  85                 v |= 0x000c0000; /* Error - Ignore */
  86                 write_reg(v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  87                 break;
  88
  89         default:
  90                 /* Assumption - Parallel transport - Signalling
  91                  * undefined or default.
  92                  */
  93                 break;
  94         }
  95
  96         if (!demux->dmx.frontend)
  97                 return -EINVAL;
  98
  99         if (stream) {
 100                 mutex_lock(&stream->dvb.feedlock);
 101                 if (stream->dvb.feeding++ == 0) {
 102                         CX18_DEBUG_INFO("Starting Transport DMA\n");
 103                         ret = cx18_start_v4l2_encode_stream(stream);
 104                 } else
 105                         ret = 0;
 106                 mutex_unlock(&stream->dvb.feedlock);
 107         }
 108
 109         return ret;
 110 }
 111
 112 /* Kernel DVB framework calls this when the feed needs to stop. */
 113 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 114 {
 115         struct dvb_demux *demux = feed->demux;
 116         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 117         struct cx18 *cx = stream->cx;
 118         int ret = -EINVAL;
 119
 120         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 121                         feed->pid, feed->index);
 122
 123         if (stream) {
 124                 mutex_lock(&stream->dvb.feedlock);
 125                 if (--stream->dvb.feeding == 0) {
 126                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 127                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 128                 } else
 129                         ret = 0;
 130                 mutex_unlock(&stream->dvb.feedlock);
 131         }
 132
 133         return ret;
 134 }
 135
 136 int cx18_dvb_register(struct cx18_stream *stream)
 137 {
 138         struct cx18 *cx = stream->cx;
 139         struct cx18_dvb *dvb = &stream->dvb;
 140         struct dvb_adapter *dvb_adapter;
 141         struct dvb_demux *dvbdemux;
 142         struct dmx_demux *dmx;
 143         int ret;
 144
 145         if (!dvb)
 146                 return -EINVAL;
 147
 148         ret = dvb_register_adapter(&dvb->dvb_adapter,
 149                         CX18_DRIVER_NAME,
 150                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 151         if (ret < 0)
 152                 goto err_out;
 153
 154         dvb_adapter = &dvb->dvb_adapter;
 155
 156         dvbdemux = &dvb->demux;
 157
 158         dvbdemux->priv = (void *)stream;
 159
 160         dvbdemux->filternum = 256;
 161         dvbdemux->feednum = 256;
 162         dvbdemux->start_feed = cx18_dvb_start_feed;
 163         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 164         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 165                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 166         ret = dvb_dmx_init(dvbdemux);
 167         if (ret < 0)
 168                 goto err_dvb_unregister_adapter;
 169
 170         dmx = &dvbdemux->dmx;
 171
 172         dvb->hw_frontend.source = DMX_FRONTEND_0;
 173         dvb->mem_frontend.source = DMX_MEMORY_FE;
 174         dvb->dmxdev.filternum = 256;
 175         dvb->dmxdev.demux = dmx;
 176
 177         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 178         if (ret < 0)
 179                 goto err_dvb_dmx_release;
 180
 181         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 182         if (ret < 0)
 183                 goto err_dvb_dmxdev_release;
 184
 185         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 186         if (ret < 0)
 187                 goto err_remove_hw_frontend;
 188
 189         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 190         if (ret < 0)
 191                 goto err_remove_mem_frontend;
 192
 193         ret = dvb_register(stream);
 194         if (ret < 0)
 195                 goto err_disconnect_frontend;
 196
 197         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 198
 199         CX18_INFO("DVB Frontend registered\n");
 200         mutex_init(&dvb->feedlock);
 201         dvb->enabled = 1;
 202         return ret;
 203
 204 err_disconnect_frontend:
 205         dmx->disconnect_frontend(dmx);
 206 err_remove_mem_frontend:
 207         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 208 err_remove_hw_frontend:
 209         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 210 err_dvb_dmxdev_release:
 211         dvb_dmxdev_release(&dvb->dmxdev);
 212 err_dvb_dmx_release:
 213         dvb_dmx_release(dvbdemux);
 214 err_dvb_unregister_adapter:
 215         dvb_unregister_adapter(dvb_adapter);
 216 err_out:
 217         return ret;
 218 }
 219
 220 void cx18_dvb_unregister(struct cx18_stream *stream)
 221 {
 222         struct cx18 *cx = stream->cx;
 223         struct cx18_dvb *dvb = &stream->dvb;
 224         struct dvb_adapter *dvb_adapter;
 225         struct dvb_demux *dvbdemux;
 226         struct dmx_demux *dmx;
 227
 228         CX18_INFO("unregister DVB\n");
 229
 230         dvb_adapter = &dvb->dvb_adapter;
 231         dvbdemux = &dvb->demux;
 232         dmx = &dvbdemux->dmx;
 233
 234         dmx->close(dmx);
 235         dvb_net_release(&dvb->dvbnet);
 236         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 237         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 238         dvb_dmxdev_release(&dvb->dmxdev);
 239         dvb_dmx_release(dvbdemux);
 240         dvb_unregister_frontend(dvb->fe);
 241         dvb_frontend_detach(dvb->fe);
 242         dvb_unregister_adapter(dvb_adapter);
 243 }
 244
 245 /* All the DVB attach calls go here, this function get's modified
 246  * for each new card. No other function in this file needs
 247  * to change.
 248  */
 249 static int dvb_register(struct cx18_stream *stream)
 250 {
 251         struct cx18_dvb *dvb = &stream->dvb;
 252         struct cx18 *cx = stream->cx;
 253         int ret = 0;
 254
 255         switch (cx->card->type) {
 256         case CX18_CARD_HVR_1600_ESMT:
 257         case CX18_CARD_HVR_1600_SAMSUNG:
 258                 dvb->fe = dvb_attach(s5h1409_attach,
 259                         &hauppauge_hvr1600_config,
 260                         &cx->i2c_adap[0]);
 261                 if (dvb->fe != NULL) {
 262                         dvb_attach(mxl5005s_attach, dvb->fe,
 263                                 &cx->i2c_adap[0],
 264                                 &hauppauge_hvr1600_tuner);
 265                         ret = 0;
 266                 }
 267                 break;
 268         default:
 269                 /* No Digital Tv Support */
 270                 break;
 271         }
 272
 273         if (dvb->fe == NULL) {
 274                 CX18_ERR("frontend initialization failed\n");
 275                 return -1;
 276         }
 277
 278         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 279         if (ret < 0) {
 280                 if (dvb->fe->ops.release)
 281                         dvb->fe->ops.release(dvb->fe);
 282                 return ret;
 283         }
 284
 285         return ret;
 286 }