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