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 #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;
  73         u32 v;
  74
  75         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  76                         feed->pid, feed->index);
  77
  78         mutex_lock(&cx->serialize_lock);
  79         ret = cx18_init_on_first_open(cx);
  80         mutex_unlock(&cx->serialize_lock);
  81         if (ret) {
  82                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
  83                 return ret;
  84         }
  85         ret = -EINVAL;
  86
  87         switch (cx->card->type) {
  88         case CX18_CARD_HVR_1600_ESMT:
  89         case CX18_CARD_HVR_1600_SAMSUNG:
  90                 v = read_reg(CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  91                 v |= 0x00400000; /* Serial Mode */
  92                 v |= 0x00002000; /* Data Length - Byte */
  93                 v |= 0x00010000; /* Error - Polarity */
  94                 v |= 0x00020000; /* Error - Passthru */
  95                 v |= 0x000c0000; /* Error - Ignore */
  96                 write_reg(v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  97                 break;
  98
  99         default:
 100                 /* Assumption - Parallel transport - Signalling
 101                  * undefined or default.
 102                  */
 103                 break;
 104         }
 105
 106         if (!demux->dmx.frontend)
 107                 return -EINVAL;
 108
 109         if (stream) {
 110                 mutex_lock(&stream->dvb.feedlock);
 111                 if (stream->dvb.feeding++ == 0) {
 112                         CX18_DEBUG_INFO("Starting Transport DMA\n");
 113                         ret = cx18_start_v4l2_encode_stream(stream);
 114                         if (ret < 0) {
 115                                 CX18_DEBUG_INFO(
 116                                         "Failed to start Transport DMA\n");
 117                                 stream->dvb.feeding--;
 118                         }
 119                 } else
 120                         ret = 0;
 121                 mutex_unlock(&stream->dvb.feedlock);
 122         }
 123
 124         return ret;
 125 }
 126
 127 /* Kernel DVB framework calls this when the feed needs to stop. */
 128 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 129 {
 130         struct dvb_demux *demux = feed->demux;
 131         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 132         struct cx18 *cx = stream->cx;
 133         int ret = -EINVAL;
 134
 135         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 136                         feed->pid, feed->index);
 137
 138         if (stream) {
 139                 mutex_lock(&stream->dvb.feedlock);
 140                 if (--stream->dvb.feeding == 0) {
 141                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 142                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 143                 } else
 144                         ret = 0;
 145                 mutex_unlock(&stream->dvb.feedlock);
 146         }
 147
 148         return ret;
 149 }
 150
 151 int cx18_dvb_register(struct cx18_stream *stream)
 152 {
 153         struct cx18 *cx = stream->cx;
 154         struct cx18_dvb *dvb = &stream->dvb;
 155         struct dvb_adapter *dvb_adapter;
 156         struct dvb_demux *dvbdemux;
 157         struct dmx_demux *dmx;
 158         int ret;
 159
 160         if (!dvb)
 161                 return -EINVAL;
 162
 163         ret = dvb_register_adapter(&dvb->dvb_adapter,
 164                         CX18_DRIVER_NAME,
 165                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 166         if (ret < 0)
 167                 goto err_out;
 168
 169         dvb_adapter = &dvb->dvb_adapter;
 170
 171         dvbdemux = &dvb->demux;
 172
 173         dvbdemux->priv = (void *)stream;
 174
 175         dvbdemux->filternum = 256;
 176         dvbdemux->feednum = 256;
 177         dvbdemux->start_feed = cx18_dvb_start_feed;
 178         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 179         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 180                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 181         ret = dvb_dmx_init(dvbdemux);
 182         if (ret < 0)
 183                 goto err_dvb_unregister_adapter;
 184
 185         dmx = &dvbdemux->dmx;
 186
 187         dvb->hw_frontend.source = DMX_FRONTEND_0;
 188         dvb->mem_frontend.source = DMX_MEMORY_FE;
 189         dvb->dmxdev.filternum = 256;
 190         dvb->dmxdev.demux = dmx;
 191
 192         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 193         if (ret < 0)
 194                 goto err_dvb_dmx_release;
 195
 196         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 197         if (ret < 0)
 198                 goto err_dvb_dmxdev_release;
 199
 200         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 201         if (ret < 0)
 202                 goto err_remove_hw_frontend;
 203
 204         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 205         if (ret < 0)
 206                 goto err_remove_mem_frontend;
 207
 208         ret = dvb_register(stream);
 209         if (ret < 0)
 210                 goto err_disconnect_frontend;
 211
 212         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 213
 214         CX18_INFO("DVB Frontend registered\n");
 215         mutex_init(&dvb->feedlock);
 216         dvb->enabled = 1;
 217         return ret;
 218
 219 err_disconnect_frontend:
 220         dmx->disconnect_frontend(dmx);
 221 err_remove_mem_frontend:
 222         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 223 err_remove_hw_frontend:
 224         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 225 err_dvb_dmxdev_release:
 226         dvb_dmxdev_release(&dvb->dmxdev);
 227 err_dvb_dmx_release:
 228         dvb_dmx_release(dvbdemux);
 229 err_dvb_unregister_adapter:
 230         dvb_unregister_adapter(dvb_adapter);
 231 err_out:
 232         return ret;
 233 }
 234
 235 void cx18_dvb_unregister(struct cx18_stream *stream)
 236 {
 237         struct cx18 *cx = stream->cx;
 238         struct cx18_dvb *dvb = &stream->dvb;
 239         struct dvb_adapter *dvb_adapter;
 240         struct dvb_demux *dvbdemux;
 241         struct dmx_demux *dmx;
 242
 243         CX18_INFO("unregister DVB\n");
 244
 245         dvb_adapter = &dvb->dvb_adapter;
 246         dvbdemux = &dvb->demux;
 247         dmx = &dvbdemux->dmx;
 248
 249         dmx->close(dmx);
 250         dvb_net_release(&dvb->dvbnet);
 251         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 252         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 253         dvb_dmxdev_release(&dvb->dmxdev);
 254         dvb_dmx_release(dvbdemux);
 255         dvb_unregister_frontend(dvb->fe);
 256         dvb_frontend_detach(dvb->fe);
 257         dvb_unregister_adapter(dvb_adapter);
 258 }
 259
 260 /* All the DVB attach calls go here, this function get's modified
 261  * for each new card. No other function in this file needs
 262  * to change.
 263  */
 264 static int dvb_register(struct cx18_stream *stream)
 265 {
 266         struct cx18_dvb *dvb = &stream->dvb;
 267         struct cx18 *cx = stream->cx;
 268         int ret = 0;
 269
 270         switch (cx->card->type) {
 271         case CX18_CARD_HVR_1600_ESMT:
 272         case CX18_CARD_HVR_1600_SAMSUNG:
 273                 dvb->fe = dvb_attach(s5h1409_attach,
 274                         &hauppauge_hvr1600_config,
 275                         &cx->i2c_adap[0]);
 276                 if (dvb->fe != NULL) {
 277                         dvb_attach(mxl5005s_attach, dvb->fe,
 278                                 &cx->i2c_adap[0],
 279                                 &hauppauge_hvr1600_tuner);
 280                         ret = 0;
 281                 }
 282                 break;
 283         default:
 284                 /* No Digital Tv Support */
 285                 break;
 286         }
 287
 288         if (dvb->fe == NULL) {
 289                 CX18_ERR("frontend initialization failed\n");
 290                 return -1;
 291         }
 292
 293         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 294         if (ret < 0) {
 295                 if (dvb->fe->ops.release)
 296                         dvb->fe->ops.release(dvb->fe);
 297                 return ret;
 298         }
 299
 300         return ret;
 301 }