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                 return -EINVAL;
 112
 113         mutex_lock(&stream->dvb.feedlock);
 114         if (stream->dvb.feeding++ == 0) {
 115                 CX18_DEBUG_INFO("Starting Transport DMA\n");
 116                 set_bit(CX18_F_S_STREAMING, &stream->s_flags);
 117                 ret = cx18_start_v4l2_encode_stream(stream);
 118                 if (ret < 0) {
 119                         CX18_DEBUG_INFO("Failed to start Transport DMA\n");
 120                         stream->dvb.feeding--;
 121                         if (stream->dvb.feeding == 0)
 122                                 clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
 123                 }
 124         } else
 125                 ret = 0;
 126         mutex_unlock(&stream->dvb.feedlock);
 127
 128         return ret;
 129 }
 130
 131 /* Kernel DVB framework calls this when the feed needs to stop. */
 132 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 133 {
 134         struct dvb_demux *demux = feed->demux;
 135         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 136         struct cx18 *cx = stream->cx;
 137         int ret = -EINVAL;
 138
 139         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 140                         feed->pid, feed->index);
 141
 142         if (stream) {
 143                 mutex_lock(&stream->dvb.feedlock);
 144                 if (--stream->dvb.feeding == 0) {
 145                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 146                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 147                 } else
 148                         ret = 0;
 149                 mutex_unlock(&stream->dvb.feedlock);
 150         }
 151
 152         return ret;
 153 }
 154
 155 int cx18_dvb_register(struct cx18_stream *stream)
 156 {
 157         struct cx18 *cx = stream->cx;
 158         struct cx18_dvb *dvb = &stream->dvb;
 159         struct dvb_adapter *dvb_adapter;
 160         struct dvb_demux *dvbdemux;
 161         struct dmx_demux *dmx;
 162         int ret;
 163
 164         if (!dvb)
 165                 return -EINVAL;
 166
 167         ret = dvb_register_adapter(&dvb->dvb_adapter,
 168                         CX18_DRIVER_NAME,
 169                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 170         if (ret < 0)
 171                 goto err_out;
 172
 173         dvb_adapter = &dvb->dvb_adapter;
 174
 175         dvbdemux = &dvb->demux;
 176
 177         dvbdemux->priv = (void *)stream;
 178
 179         dvbdemux->filternum = 256;
 180         dvbdemux->feednum = 256;
 181         dvbdemux->start_feed = cx18_dvb_start_feed;
 182         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 183         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 184                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 185         ret = dvb_dmx_init(dvbdemux);
 186         if (ret < 0)
 187                 goto err_dvb_unregister_adapter;
 188
 189         dmx = &dvbdemux->dmx;
 190
 191         dvb->hw_frontend.source = DMX_FRONTEND_0;
 192         dvb->mem_frontend.source = DMX_MEMORY_FE;
 193         dvb->dmxdev.filternum = 256;
 194         dvb->dmxdev.demux = dmx;
 195
 196         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 197         if (ret < 0)
 198                 goto err_dvb_dmx_release;
 199
 200         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 201         if (ret < 0)
 202                 goto err_dvb_dmxdev_release;
 203
 204         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 205         if (ret < 0)
 206                 goto err_remove_hw_frontend;
 207
 208         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 209         if (ret < 0)
 210                 goto err_remove_mem_frontend;
 211
 212         ret = dvb_register(stream);
 213         if (ret < 0)
 214                 goto err_disconnect_frontend;
 215
 216         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 217
 218         CX18_INFO("DVB Frontend registered\n");
 219         mutex_init(&dvb->feedlock);
 220         dvb->enabled = 1;
 221         return ret;
 222
 223 err_disconnect_frontend:
 224         dmx->disconnect_frontend(dmx);
 225 err_remove_mem_frontend:
 226         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 227 err_remove_hw_frontend:
 228         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 229 err_dvb_dmxdev_release:
 230         dvb_dmxdev_release(&dvb->dmxdev);
 231 err_dvb_dmx_release:
 232         dvb_dmx_release(dvbdemux);
 233 err_dvb_unregister_adapter:
 234         dvb_unregister_adapter(dvb_adapter);
 235 err_out:
 236         return ret;
 237 }
 238
 239 void cx18_dvb_unregister(struct cx18_stream *stream)
 240 {
 241         struct cx18 *cx = stream->cx;
 242         struct cx18_dvb *dvb = &stream->dvb;
 243         struct dvb_adapter *dvb_adapter;
 244         struct dvb_demux *dvbdemux;
 245         struct dmx_demux *dmx;
 246
 247         CX18_INFO("unregister DVB\n");
 248
 249         dvb_adapter = &dvb->dvb_adapter;
 250         dvbdemux = &dvb->demux;
 251         dmx = &dvbdemux->dmx;
 252
 253         dmx->close(dmx);
 254         dvb_net_release(&dvb->dvbnet);
 255         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 256         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 257         dvb_dmxdev_release(&dvb->dmxdev);
 258         dvb_dmx_release(dvbdemux);
 259         dvb_unregister_frontend(dvb->fe);
 260         dvb_frontend_detach(dvb->fe);
 261         dvb_unregister_adapter(dvb_adapter);
 262 }
 263
 264 /* All the DVB attach calls go here, this function get's modified
 265  * for each new card. No other function in this file needs
 266  * to change.
 267  */
 268 static int dvb_register(struct cx18_stream *stream)
 269 {
 270         struct cx18_dvb *dvb = &stream->dvb;
 271         struct cx18 *cx = stream->cx;
 272         int ret = 0;
 273
 274         switch (cx->card->type) {
 275         case CX18_CARD_HVR_1600_ESMT:
 276         case CX18_CARD_HVR_1600_SAMSUNG:
 277                 dvb->fe = dvb_attach(s5h1409_attach,
 278                         &hauppauge_hvr1600_config,
 279                         &cx->i2c_adap[0]);
 280                 if (dvb->fe != NULL) {
 281                         dvb_attach(mxl5005s_attach, dvb->fe,
 282                                 &cx->i2c_adap[0],
 283                                 &hauppauge_hvr1600_tuner);
 284                         ret = 0;
 285                 }
 286                 break;
 287         default:
 288                 /* No Digital Tv Support */
 289                 break;
 290         }
 291
 292         if (dvb->fe == NULL) {
 293                 CX18_ERR("frontend initialization failed\n");
 294                 return -1;
 295         }
 296
 297         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 298         if (ret < 0) {
 299                 if (dvb->fe->ops.release)
 300                         dvb->fe->ops.release(dvb->fe);
 301                 return ret;
 302         }
 303
 304         return ret;
 305 }