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-queue.h"
  27 #include "cx18-scb.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                 mutex_lock(&stream->dvb.feedlock);
 114                 if (stream->dvb.feeding++ == 0) {
 115                         CX18_DEBUG_INFO("Starting Transport DMA\n");
 116                         ret = cx18_start_v4l2_encode_stream(stream);
 117                         if (ret < 0) {
 118                                 CX18_DEBUG_INFO(
 119                                         "Failed to start Transport DMA\n");
 120                                 stream->dvb.feeding--;
 121                         }
 122                 } else
 123                         ret = 0;
 124                 mutex_unlock(&stream->dvb.feedlock);
 125         }
 126
 127         return ret;
 128 }
 129
 130 /* Kernel DVB framework calls this when the feed needs to stop. */
 131 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 132 {
 133         struct dvb_demux *demux = feed->demux;
 134         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 135         struct cx18 *cx = stream->cx;
 136         int ret = -EINVAL;
 137
 138         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 139                         feed->pid, feed->index);
 140
 141         if (stream) {
 142                 mutex_lock(&stream->dvb.feedlock);
 143                 if (--stream->dvb.feeding == 0) {
 144                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 145                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 146                 } else
 147                         ret = 0;
 148                 mutex_unlock(&stream->dvb.feedlock);
 149         }
 150
 151         return ret;
 152 }
 153
 154 int cx18_dvb_register(struct cx18_stream *stream)
 155 {
 156         struct cx18 *cx = stream->cx;
 157         struct cx18_dvb *dvb = &stream->dvb;
 158         struct dvb_adapter *dvb_adapter;
 159         struct dvb_demux *dvbdemux;
 160         struct dmx_demux *dmx;
 161         int ret;
 162
 163         if (!dvb)
 164                 return -EINVAL;
 165
 166         ret = dvb_register_adapter(&dvb->dvb_adapter,
 167                         CX18_DRIVER_NAME,
 168                         THIS_MODULE, &cx->dev->dev, adapter_nr);
 169         if (ret < 0)
 170                 goto err_out;
 171
 172         dvb_adapter = &dvb->dvb_adapter;
 173
 174         dvbdemux = &dvb->demux;
 175
 176         dvbdemux->priv = (void *)stream;
 177
 178         dvbdemux->filternum = 256;
 179         dvbdemux->feednum = 256;
 180         dvbdemux->start_feed = cx18_dvb_start_feed;
 181         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 182         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 183                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 184         ret = dvb_dmx_init(dvbdemux);
 185         if (ret < 0)
 186                 goto err_dvb_unregister_adapter;
 187
 188         dmx = &dvbdemux->dmx;
 189
 190         dvb->hw_frontend.source = DMX_FRONTEND_0;
 191         dvb->mem_frontend.source = DMX_MEMORY_FE;
 192         dvb->dmxdev.filternum = 256;
 193         dvb->dmxdev.demux = dmx;
 194
 195         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 196         if (ret < 0)
 197                 goto err_dvb_dmx_release;
 198
 199         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 200         if (ret < 0)
 201                 goto err_dvb_dmxdev_release;
 202
 203         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 204         if (ret < 0)
 205                 goto err_remove_hw_frontend;
 206
 207         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 208         if (ret < 0)
 209                 goto err_remove_mem_frontend;
 210
 211         ret = dvb_register(stream);
 212         if (ret < 0)
 213                 goto err_disconnect_frontend;
 214
 215         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 216
 217         CX18_INFO("DVB Frontend registered\n");
 218         mutex_init(&dvb->feedlock);
 219         dvb->enabled = 1;
 220         return ret;
 221
 222 err_disconnect_frontend:
 223         dmx->disconnect_frontend(dmx);
 224 err_remove_mem_frontend:
 225         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 226 err_remove_hw_frontend:
 227         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 228 err_dvb_dmxdev_release:
 229         dvb_dmxdev_release(&dvb->dmxdev);
 230 err_dvb_dmx_release:
 231         dvb_dmx_release(dvbdemux);
 232 err_dvb_unregister_adapter:
 233         dvb_unregister_adapter(dvb_adapter);
 234 err_out:
 235         return ret;
 236 }
 237
 238 void cx18_dvb_unregister(struct cx18_stream *stream)
 239 {
 240         struct cx18 *cx = stream->cx;
 241         struct cx18_dvb *dvb = &stream->dvb;
 242         struct dvb_adapter *dvb_adapter;
 243         struct dvb_demux *dvbdemux;
 244         struct dmx_demux *dmx;
 245
 246         CX18_INFO("unregister DVB\n");
 247
 248         dvb_adapter = &dvb->dvb_adapter;
 249         dvbdemux = &dvb->demux;
 250         dmx = &dvbdemux->dmx;
 251
 252         dmx->close(dmx);
 253         dvb_net_release(&dvb->dvbnet);
 254         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 255         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 256         dvb_dmxdev_release(&dvb->dmxdev);
 257         dvb_dmx_release(dvbdemux);
 258         dvb_unregister_frontend(dvb->fe);
 259         dvb_frontend_detach(dvb->fe);
 260         dvb_unregister_adapter(dvb_adapter);
 261 }
 262
 263 /* All the DVB attach calls go here, this function get's modified
 264  * for each new card. No other function in this file needs
 265  * to change.
 266  */
 267 static int dvb_register(struct cx18_stream *stream)
 268 {
 269         struct cx18_dvb *dvb = &stream->dvb;
 270         struct cx18 *cx = stream->cx;
 271         int ret = 0;
 272
 273         switch (cx->card->type) {
 274         case CX18_CARD_HVR_1600_ESMT:
 275         case CX18_CARD_HVR_1600_SAMSUNG:
 276                 dvb->fe = dvb_attach(s5h1409_attach,
 277                         &hauppauge_hvr1600_config,
 278                         &cx->i2c_adap[0]);
 279                 if (dvb->fe != NULL) {
 280                         dvb_attach(mxl5005s_attach, dvb->fe,
 281                                 &cx->i2c_adap[0],
 282                                 &hauppauge_hvr1600_tuner);
 283                         ret = 0;
 284                 }
 285                 break;
 286         default:
 287                 /* No Digital Tv Support */
 288                 break;
 289         }
 290
 291         if (dvb->fe == NULL) {
 292                 CX18_ERR("frontend initialization failed\n");
 293                 return -1;
 294         }
 295
 296         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 297         if (ret < 0) {
 298                 if (dvb->fe->ops.release)
 299                         dvb->fe->ops.release(dvb->fe);
 300                 return ret;
 301         }
 302
 303         return ret;
 304 }
 305
 306 void cx18_dvb_work_handler(struct cx18 *cx)
 307 {
 308         struct cx18_buffer *buf;
 309         struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_TS];
 310
 311         while ((buf = cx18_dequeue(s, &s->q_full)) != NULL) {
 312                 if (s->dvb.enabled)
 313                         dvb_dmx_swfilter(&s->dvb.demux, buf->buf,
 314                                          buf->bytesused);
 315
 316                 cx18_enqueue(s, buf, &s->q_free);
 317                 cx18_buf_sync_for_device(s, buf);
 318                 if (s->handle == CX18_INVALID_TASK_HANDLE) /* FIXME: improve */
 319                         continue;
 320
 321                 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
 322                        (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
 323                        1, buf->id, s->buf_size);
 324         }
 325 }