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  *  Copyright (C) 2008  Andy Walls <awalls@radix.net>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include "cx18-version.h"
  24 #include "cx18-dvb.h"
  25 #include "cx18-io.h"
  26 #include "cx18-queue.h"
  27 #include "cx18-streams.h"
  28 #include "cx18-cards.h"
  29 #include "s5h1409.h"
  30 #include "mxl5005s.h"
  31
  32 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  33
  34 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  35
  36 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
  37         .i2c_address     = 0xC6 >> 1,
  38         .if_freq         = IF_FREQ_5380000HZ,
  39         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
  40         .agc_mode        = MXL_SINGLE_AGC,
  41         .tracking_filter = MXL_TF_C_H,
  42         .rssi_enable     = MXL_RSSI_ENABLE,
  43         .cap_select      = MXL_CAP_SEL_ENABLE,
  44         .div_out         = MXL_DIV_OUT_4,
  45         .clock_out       = MXL_CLOCK_OUT_DISABLE,
  46         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
  47         .top             = MXL5005S_TOP_25P2,
  48         .mod_mode        = MXL_DIGITAL_MODE,
  49         .if_mode         = MXL_ZERO_IF,
  50         .AgcMasterByte   = 0x00,
  51 };
  52
  53 static struct s5h1409_config hauppauge_hvr1600_config = {
  54         .demod_address = 0x32 >> 1,
  55         .output_mode   = S5H1409_SERIAL_OUTPUT,
  56         .gpio          = S5H1409_GPIO_ON,
  57         .qam_if        = 44000,
  58         .inversion     = S5H1409_INVERSION_OFF,
  59         .status_mode   = S5H1409_DEMODLOCKING,
  60         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  61
  62 };
  63
  64 static int dvb_register(struct cx18_stream *stream);
  65
  66 /* Kernel DVB framework calls this when the feed needs to start.
  67  * The CX18 framework should enable the transport DMA handling
  68  * and queue processing.
  69  */
  70 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
  71 {
  72         struct dvb_demux *demux = feed->demux;
  73         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
  74         struct cx18 *cx = stream->cx;
  75         int ret;
  76         u32 v;
  77
  78         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  79                         feed->pid, feed->index);
  80
  81         mutex_lock(&cx->serialize_lock);
  82         ret = cx18_init_on_first_open(cx);
  83         mutex_unlock(&cx->serialize_lock);
  84         if (ret) {
  85                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
  86                 return ret;
  87         }
  88         ret = -EINVAL;
  89
  90         switch (cx->card->type) {
  91         case CX18_CARD_HVR_1600_ESMT:
  92         case CX18_CARD_HVR_1600_SAMSUNG:
  93                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
  94                 v |= 0x00400000; /* Serial Mode */
  95                 v |= 0x00002000; /* Data Length - Byte */
  96                 v |= 0x00010000; /* Error - Polarity */
  97                 v |= 0x00020000; /* Error - Passthru */
  98                 v |= 0x000c0000; /* Error - Ignore */
  99                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 100                 break;
 101
 102         default:
 103                 /* Assumption - Parallel transport - Signalling
 104                  * undefined or default.
 105                  */
 106                 break;
 107         }
 108
 109         if (!demux->dmx.frontend)
 110                 return -EINVAL;
 111
 112         if (!stream)
 113                 return -EINVAL;
 114
 115         mutex_lock(&stream->dvb.feedlock);
 116         if (stream->dvb.feeding++ == 0) {
 117                 CX18_DEBUG_INFO("Starting Transport DMA\n");
 118                 set_bit(CX18_F_S_STREAMING, &stream->s_flags);
 119                 ret = cx18_start_v4l2_encode_stream(stream);
 120                 if (ret < 0) {
 121                         CX18_DEBUG_INFO("Failed to start Transport DMA\n");
 122                         stream->dvb.feeding--;
 123                         if (stream->dvb.feeding == 0)
 124                                 clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
 125                 }
 126         } else
 127                 ret = 0;
 128         mutex_unlock(&stream->dvb.feedlock);
 129
 130         return ret;
 131 }
 132
 133 /* Kernel DVB framework calls this when the feed needs to stop. */
 134 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 135 {
 136         struct dvb_demux *demux = feed->demux;
 137         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 138         struct cx18 *cx = stream->cx;
 139         int ret = -EINVAL;
 140
 141         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 142                         feed->pid, feed->index);
 143
 144         if (stream) {
 145                 mutex_lock(&stream->dvb.feedlock);
 146                 if (--stream->dvb.feeding == 0) {
 147                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 148                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 149                 } else
 150                         ret = 0;
 151                 mutex_unlock(&stream->dvb.feedlock);
 152         }
 153
 154         return ret;
 155 }
 156
 157 int cx18_dvb_register(struct cx18_stream *stream)
 158 {
 159         struct cx18 *cx = stream->cx;
 160         struct cx18_dvb *dvb = &stream->dvb;
 161         struct dvb_adapter *dvb_adapter;
 162         struct dvb_demux *dvbdemux;
 163         struct dmx_demux *dmx;
 164         int ret;
 165
 166         if (!dvb)
 167                 return -EINVAL;
 168
 169         ret = dvb_register_adapter(&dvb->dvb_adapter,
 170                         CX18_DRIVER_NAME,
 171                         THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
 172         if (ret < 0)
 173                 goto err_out;
 174
 175         dvb_adapter = &dvb->dvb_adapter;
 176
 177         dvbdemux = &dvb->demux;
 178
 179         dvbdemux->priv = (void *)stream;
 180
 181         dvbdemux->filternum = 256;
 182         dvbdemux->feednum = 256;
 183         dvbdemux->start_feed = cx18_dvb_start_feed;
 184         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 185         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 186                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 187         ret = dvb_dmx_init(dvbdemux);
 188         if (ret < 0)
 189                 goto err_dvb_unregister_adapter;
 190
 191         dmx = &dvbdemux->dmx;
 192
 193         dvb->hw_frontend.source = DMX_FRONTEND_0;
 194         dvb->mem_frontend.source = DMX_MEMORY_FE;
 195         dvb->dmxdev.filternum = 256;
 196         dvb->dmxdev.demux = dmx;
 197
 198         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 199         if (ret < 0)
 200                 goto err_dvb_dmx_release;
 201
 202         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 203         if (ret < 0)
 204                 goto err_dvb_dmxdev_release;
 205
 206         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 207         if (ret < 0)
 208                 goto err_remove_hw_frontend;
 209
 210         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 211         if (ret < 0)
 212                 goto err_remove_mem_frontend;
 213
 214         ret = dvb_register(stream);
 215         if (ret < 0)
 216                 goto err_disconnect_frontend;
 217
 218         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 219
 220         CX18_INFO("DVB Frontend registered\n");
 221         CX18_INFO("Registered DVB adapter%d for %s (%d x %d kB)\n",
 222                   stream->dvb.dvb_adapter.num, stream->name,
 223                   stream->buffers, stream->buf_size/1024);
 224
 225         mutex_init(&dvb->feedlock);
 226         dvb->enabled = 1;
 227         return ret;
 228
 229 err_disconnect_frontend:
 230         dmx->disconnect_frontend(dmx);
 231 err_remove_mem_frontend:
 232         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 233 err_remove_hw_frontend:
 234         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 235 err_dvb_dmxdev_release:
 236         dvb_dmxdev_release(&dvb->dmxdev);
 237 err_dvb_dmx_release:
 238         dvb_dmx_release(dvbdemux);
 239 err_dvb_unregister_adapter:
 240         dvb_unregister_adapter(dvb_adapter);
 241 err_out:
 242         return ret;
 243 }
 244
 245 void cx18_dvb_unregister(struct cx18_stream *stream)
 246 {
 247         struct cx18 *cx = stream->cx;
 248         struct cx18_dvb *dvb = &stream->dvb;
 249         struct dvb_adapter *dvb_adapter;
 250         struct dvb_demux *dvbdemux;
 251         struct dmx_demux *dmx;
 252
 253         CX18_INFO("unregister DVB\n");
 254
 255         dvb_adapter = &dvb->dvb_adapter;
 256         dvbdemux = &dvb->demux;
 257         dmx = &dvbdemux->dmx;
 258
 259         dmx->close(dmx);
 260         dvb_net_release(&dvb->dvbnet);
 261         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 262         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 263         dvb_dmxdev_release(&dvb->dmxdev);
 264         dvb_dmx_release(dvbdemux);
 265         dvb_unregister_frontend(dvb->fe);
 266         dvb_frontend_detach(dvb->fe);
 267         dvb_unregister_adapter(dvb_adapter);
 268 }
 269
 270 /* All the DVB attach calls go here, this function get's modified
 271  * for each new card. No other function in this file needs
 272  * to change.
 273  */
 274 static int dvb_register(struct cx18_stream *stream)
 275 {
 276         struct cx18_dvb *dvb = &stream->dvb;
 277         struct cx18 *cx = stream->cx;
 278         int ret = 0;
 279
 280         switch (cx->card->type) {
 281         case CX18_CARD_HVR_1600_ESMT:
 282         case CX18_CARD_HVR_1600_SAMSUNG:
 283                 dvb->fe = dvb_attach(s5h1409_attach,
 284                         &hauppauge_hvr1600_config,
 285                         &cx->i2c_adap[0]);
 286                 if (dvb->fe != NULL) {
 287                         dvb_attach(mxl5005s_attach, dvb->fe,
 288                                 &cx->i2c_adap[0],
 289                                 &hauppauge_hvr1600_tuner);
 290                         ret = 0;
 291                 }
 292                 break;
 293         default:
 294                 /* No Digital Tv Support */
 295                 break;
 296         }
 297
 298         if (dvb->fe == NULL) {
 299                 CX18_ERR("frontend initialization failed\n");
 300                 return -1;
 301         }
 302
 303         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 304         if (ret < 0) {
 305                 if (dvb->fe->ops.release)
 306                         dvb->fe->ops.release(dvb->fe);
 307                 return ret;
 308         }
 309
 310         return ret;
 311 }