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@linuxtv.org>
   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-io.h"
  25 #include "cx18-streams.h"
  26 #include "cx18-cards.h"
  27 #include "s5h1409.h"
  28 #include "mxl5005s.h"
  29
  30 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  31
  32 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  33
  34 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
  35         .i2c_address     = 0xC6 >> 1,
  36         .if_freq         = IF_FREQ_5380000HZ,
  37         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
  38         .agc_mode        = MXL_SINGLE_AGC,
  39         .tracking_filter = MXL_TF_C_H,
  40         .rssi_enable     = MXL_RSSI_ENABLE,
  41         .cap_select      = MXL_CAP_SEL_ENABLE,
  42         .div_out         = MXL_DIV_OUT_4,
  43         .clock_out       = MXL_CLOCK_OUT_DISABLE,
  44         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
  45         .top             = MXL5005S_TOP_25P2,
  46         .mod_mode        = MXL_DIGITAL_MODE,
  47         .if_mode         = MXL_ZERO_IF,
  48         .AgcMasterByte   = 0x00,
  49 };
  50
  51 static struct s5h1409_config hauppauge_hvr1600_config = {
  52         .demod_address = 0x32 >> 1,
  53         .output_mode   = S5H1409_SERIAL_OUTPUT,
  54         .gpio          = S5H1409_GPIO_ON,
  55         .qam_if        = 44000,
  56         .inversion     = S5H1409_INVERSION_OFF,
  57         .status_mode   = S5H1409_DEMODLOCKING,
  58         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  59
  60 };
  61
  62 static int dvb_register(struct cx18_stream *stream);
  63
  64 /* Kernel DVB framework calls this when the feed needs to start.
  65  * The CX18 framework should enable the transport DMA handling
  66  * and queue processing.
  67  */
  68 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
  69 {
  70         struct dvb_demux *demux = feed->demux;
  71         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
  72         struct cx18 *cx = stream->cx;
  73         int ret;
  74         u32 v;
  75
  76         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  77                         feed->pid, feed->index);
  78
  79         mutex_lock(&cx->serialize_lock);
  80         ret = cx18_init_on_first_open(cx);
  81         mutex_unlock(&cx->serialize_lock);
  82         if (ret) {
  83                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
  84                 return ret;
  85         }
  86         ret = -EINVAL;
  87
  88         switch (cx->card->type) {
  89         case CX18_CARD_HVR_1600_ESMT:
  90         case CX18_CARD_HVR_1600_SAMSUNG:
  91                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  92                 v |= 0x00400000; /* Serial Mode */
  93                 v |= 0x00002000; /* Data Length - Byte */
  94                 v |= 0x00010000; /* Error - Polarity */
  95                 v |= 0x00020000; /* Error - Passthru */
  96                 v |= 0x000c0000; /* Error - Ignore */
  97                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  98                 break;
  99
 100         default:
 101                 /* Assumption - Parallel transport - Signalling
 102                  * undefined or default.
 103                  */
 104                 break;
 105         }
 106
 107         if (!demux->dmx.frontend)
 108                 return -EINVAL;
 109
 110         if (stream) {
 111                 mutex_lock(&stream->dvb.feedlock);
 112                 if (stream->dvb.feeding++ == 0) {
 113                         CX18_DEBUG_INFO("Starting Transport DMA\n");
 114                         ret = cx18_start_v4l2_encode_stream(stream);
 115                         if (ret < 0) {
 116                                 CX18_DEBUG_INFO(
 117                                         "Failed to start Transport DMA\n");
 118                                 stream->dvb.feeding--;
 119                         }
 120                 } else
 121                         ret = 0;
 122                 mutex_unlock(&stream->dvb.feedlock);
 123         }
 124
 125         return ret;
 126 }
 127
 128 /* Kernel DVB framework calls this when the feed needs to stop. */
 129 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 130 {
 131         struct dvb_demux *demux = feed->demux;
 132         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 133         struct cx18 *cx = stream->cx;
 134         int ret = -EINVAL;
 135
 136         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 137                         feed->pid, feed->index);
 138
 139         if (stream) {
 140                 mutex_lock(&stream->dvb.feedlock);
 141                 if (--stream->dvb.feeding == 0) {
 142                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 143                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 144                 } else
 145                         ret = 0;
 146                 mutex_unlock(&stream->dvb.feedlock);
 147         }
 148
 149         return ret;
 150 }
 151
 152 int cx18_dvb_register(struct cx18_stream *stream)
 153 {
 154         struct cx18 *cx = stream->cx;
 155         struct cx18_dvb *dvb = &stream->dvb;
 156         struct dvb_adapter *dvb_adapter;
 157         struct dvb_demux *dvbdemux;
 158         struct dmx_demux *dmx;
 159         int ret;
 160
 161         if (!dvb)
 162                 return -EINVAL;
 163
 164         ret = dvb_register_adapter(&dvb->dvb_adapter,
 165                         CX18_DRIVER_NAME,
 166                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 167         if (ret < 0)
 168                 goto err_out;
 169
 170         dvb_adapter = &dvb->dvb_adapter;
 171
 172         dvbdemux = &dvb->demux;
 173
 174         dvbdemux->priv = (void *)stream;
 175
 176         dvbdemux->filternum = 256;
 177         dvbdemux->feednum = 256;
 178         dvbdemux->start_feed = cx18_dvb_start_feed;
 179         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 180         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 181                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 182         ret = dvb_dmx_init(dvbdemux);
 183         if (ret < 0)
 184                 goto err_dvb_unregister_adapter;
 185
 186         dmx = &dvbdemux->dmx;
 187
 188         dvb->hw_frontend.source = DMX_FRONTEND_0;
 189         dvb->mem_frontend.source = DMX_MEMORY_FE;
 190         dvb->dmxdev.filternum = 256;
 191         dvb->dmxdev.demux = dmx;
 192
 193         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 194         if (ret < 0)
 195                 goto err_dvb_dmx_release;
 196
 197         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 198         if (ret < 0)
 199                 goto err_dvb_dmxdev_release;
 200
 201         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 202         if (ret < 0)
 203                 goto err_remove_hw_frontend;
 204
 205         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 206         if (ret < 0)
 207                 goto err_remove_mem_frontend;
 208
 209         ret = dvb_register(stream);
 210         if (ret < 0)
 211                 goto err_disconnect_frontend;
 212
 213         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 214
 215         CX18_INFO("DVB Frontend registered\n");
 216         mutex_init(&dvb->feedlock);
 217         dvb->enabled = 1;
 218         return ret;
 219
 220 err_disconnect_frontend:
 221         dmx->disconnect_frontend(dmx);
 222 err_remove_mem_frontend:
 223         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 224 err_remove_hw_frontend:
 225         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 226 err_dvb_dmxdev_release:
 227         dvb_dmxdev_release(&dvb->dmxdev);
 228 err_dvb_dmx_release:
 229         dvb_dmx_release(dvbdemux);
 230 err_dvb_unregister_adapter:
 231         dvb_unregister_adapter(dvb_adapter);
 232 err_out:
 233         return ret;
 234 }
 235
 236 void cx18_dvb_unregister(struct cx18_stream *stream)
 237 {
 238         struct cx18 *cx = stream->cx;
 239         struct cx18_dvb *dvb = &stream->dvb;
 240         struct dvb_adapter *dvb_adapter;
 241         struct dvb_demux *dvbdemux;
 242         struct dmx_demux *dmx;
 243
 244         CX18_INFO("unregister DVB\n");
 245
 246         dvb_adapter = &dvb->dvb_adapter;
 247         dvbdemux = &dvb->demux;
 248         dmx = &dvbdemux->dmx;
 249
 250         dmx->close(dmx);
 251         dvb_net_release(&dvb->dvbnet);
 252         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 253         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 254         dvb_dmxdev_release(&dvb->dmxdev);
 255         dvb_dmx_release(dvbdemux);
 256         dvb_unregister_frontend(dvb->fe);
 257         dvb_frontend_detach(dvb->fe);
 258         dvb_unregister_adapter(dvb_adapter);
 259 }
 260
 261 /* All the DVB attach calls go here, this function get's modified
 262  * for each new card. No other function in this file needs
 263  * to change.
 264  */
 265 static int dvb_register(struct cx18_stream *stream)
 266 {
 267         struct cx18_dvb *dvb = &stream->dvb;
 268         struct cx18 *cx = stream->cx;
 269         int ret = 0;
 270
 271         switch (cx->card->type) {
 272         case CX18_CARD_HVR_1600_ESMT:
 273         case CX18_CARD_HVR_1600_SAMSUNG:
 274                 dvb->fe = dvb_attach(s5h1409_attach,
 275                         &hauppauge_hvr1600_config,
 276                         &cx->i2c_adap[0]);
 277                 if (dvb->fe != NULL) {
 278                         dvb_attach(mxl5005s_attach, dvb->fe,
 279                                 &cx->i2c_adap[0],
 280                                 &hauppauge_hvr1600_tuner);
 281                         ret = 0;
 282                 }
 283                 break;
 284         default:
 285                 /* No Digital Tv Support */
 286                 break;
 287         }
 288
 289         if (dvb->fe == NULL) {
 290                 CX18_ERR("frontend initialization failed\n");
 291                 return -1;
 292         }
 293
 294         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 295         if (ret < 0) {
 296                 if (dvb->fe->ops.release)
 297                         dvb->fe->ops.release(dvb->fe);
 298                 return ret;
 299         }
 300
 301         return ret;
 302 }