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 "cx18-gpio.h"
  30 #include "s5h1409.h"
  31 #include "mxl5005s.h"
  32 #include "zl10353.h"
  33 #include "tuner-xc2028.h"
  34
  35 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  36
  37 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  38 #define CX18_CLOCK_ENABLE2               0xc71024
  39 #define CX18_DMUX_CLK_MASK               0x0080
  40
  41 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
  42         .i2c_address     = 0xC6 >> 1,
  43         .if_freq         = IF_FREQ_5380000HZ,
  44         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
  45         .agc_mode        = MXL_SINGLE_AGC,
  46         .tracking_filter = MXL_TF_C_H,
  47         .rssi_enable     = MXL_RSSI_ENABLE,
  48         .cap_select      = MXL_CAP_SEL_ENABLE,
  49         .div_out         = MXL_DIV_OUT_4,
  50         .clock_out       = MXL_CLOCK_OUT_DISABLE,
  51         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
  52         .top             = MXL5005S_TOP_25P2,
  53         .mod_mode        = MXL_DIGITAL_MODE,
  54         .if_mode         = MXL_ZERO_IF,
  55         .AgcMasterByte   = 0x00,
  56 };
  57
  58 static struct s5h1409_config hauppauge_hvr1600_config = {
  59         .demod_address = 0x32 >> 1,
  60         .output_mode   = S5H1409_SERIAL_OUTPUT,
  61         .gpio          = S5H1409_GPIO_ON,
  62         .qam_if        = 44000,
  63         .inversion     = S5H1409_INVERSION_OFF,
  64         .status_mode   = S5H1409_DEMODLOCKING,
  65         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  66 };
  67
  68 /* Information/confirmation of proper config values provided by Terry Wu */
  69 static struct zl10353_config leadtek_dvr3100h_demod = {
  70         .demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
  71         .if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
  72         .parallel_ts           = 1,         /* Not a serial TS */
  73         .no_tuner              = 1,         /* XC3028 is not behind the gate */
  74         .disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
  75 };
  76
  77 static int dvb_register(struct cx18_stream *stream);
  78
  79 /* Kernel DVB framework calls this when the feed needs to start.
  80  * The CX18 framework should enable the transport DMA handling
  81  * and queue processing.
  82  */
  83 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
  84 {
  85         struct dvb_demux *demux = feed->demux;
  86         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
  87         struct cx18 *cx = stream->cx;
  88         int ret;
  89         u32 v;
  90
  91         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
  92                         feed->pid, feed->index);
  93
  94         mutex_lock(&cx->serialize_lock);
  95         ret = cx18_init_on_first_open(cx);
  96         mutex_unlock(&cx->serialize_lock);
  97         if (ret) {
  98                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
  99                 return ret;
 100         }
 101         ret = -EINVAL;
 102
 103         switch (cx->card->type) {
 104         case CX18_CARD_HVR_1600_ESMT:
 105         case CX18_CARD_HVR_1600_SAMSUNG:
 106                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 107                 v |= 0x00400000; /* Serial Mode */
 108                 v |= 0x00002000; /* Data Length - Byte */
 109                 v |= 0x00010000; /* Error - Polarity */
 110                 v |= 0x00020000; /* Error - Passthru */
 111                 v |= 0x000c0000; /* Error - Ignore */
 112                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 113                 break;
 114
 115         case CX18_CARD_LEADTEK_DVR3100H:
 116         default:
 117                 /* Assumption - Parallel transport - Signalling
 118                  * undefined or default.
 119                  */
 120                 break;
 121         }
 122
 123         if (!demux->dmx.frontend)
 124                 return -EINVAL;
 125
 126         if (!stream)
 127                 return -EINVAL;
 128
 129         mutex_lock(&stream->dvb.feedlock);
 130         if (stream->dvb.feeding++ == 0) {
 131                 CX18_DEBUG_INFO("Starting Transport DMA\n");
 132                 set_bit(CX18_F_S_STREAMING, &stream->s_flags);
 133                 ret = cx18_start_v4l2_encode_stream(stream);
 134                 if (ret < 0) {
 135                         CX18_DEBUG_INFO("Failed to start Transport DMA\n");
 136                         stream->dvb.feeding--;
 137                         if (stream->dvb.feeding == 0)
 138                                 clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
 139                 }
 140         } else
 141                 ret = 0;
 142         mutex_unlock(&stream->dvb.feedlock);
 143
 144         return ret;
 145 }
 146
 147 /* Kernel DVB framework calls this when the feed needs to stop. */
 148 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 149 {
 150         struct dvb_demux *demux = feed->demux;
 151         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 152         struct cx18 *cx = stream->cx;
 153         int ret = -EINVAL;
 154
 155         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 156                         feed->pid, feed->index);
 157
 158         if (stream) {
 159                 mutex_lock(&stream->dvb.feedlock);
 160                 if (--stream->dvb.feeding == 0) {
 161                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 162                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 163                 } else
 164                         ret = 0;
 165                 mutex_unlock(&stream->dvb.feedlock);
 166         }
 167
 168         return ret;
 169 }
 170
 171 int cx18_dvb_register(struct cx18_stream *stream)
 172 {
 173         struct cx18 *cx = stream->cx;
 174         struct cx18_dvb *dvb = &stream->dvb;
 175         struct dvb_adapter *dvb_adapter;
 176         struct dvb_demux *dvbdemux;
 177         struct dmx_demux *dmx;
 178         int ret;
 179
 180         if (!dvb)
 181                 return -EINVAL;
 182
 183         ret = dvb_register_adapter(&dvb->dvb_adapter,
 184                         CX18_DRIVER_NAME,
 185                         THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
 186         if (ret < 0)
 187                 goto err_out;
 188
 189         dvb_adapter = &dvb->dvb_adapter;
 190
 191         dvbdemux = &dvb->demux;
 192
 193         dvbdemux->priv = (void *)stream;
 194
 195         dvbdemux->filternum = 256;
 196         dvbdemux->feednum = 256;
 197         dvbdemux->start_feed = cx18_dvb_start_feed;
 198         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 199         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 200                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 201         ret = dvb_dmx_init(dvbdemux);
 202         if (ret < 0)
 203                 goto err_dvb_unregister_adapter;
 204
 205         dmx = &dvbdemux->dmx;
 206
 207         dvb->hw_frontend.source = DMX_FRONTEND_0;
 208         dvb->mem_frontend.source = DMX_MEMORY_FE;
 209         dvb->dmxdev.filternum = 256;
 210         dvb->dmxdev.demux = dmx;
 211
 212         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 213         if (ret < 0)
 214                 goto err_dvb_dmx_release;
 215
 216         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 217         if (ret < 0)
 218                 goto err_dvb_dmxdev_release;
 219
 220         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 221         if (ret < 0)
 222                 goto err_remove_hw_frontend;
 223
 224         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 225         if (ret < 0)
 226                 goto err_remove_mem_frontend;
 227
 228         ret = dvb_register(stream);
 229         if (ret < 0)
 230                 goto err_disconnect_frontend;
 231
 232         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 233
 234         CX18_INFO("DVB Frontend registered\n");
 235         CX18_INFO("Registered DVB adapter%d for %s (%d x %d kB)\n",
 236                   stream->dvb.dvb_adapter.num, stream->name,
 237                   stream->buffers, stream->buf_size/1024);
 238
 239         mutex_init(&dvb->feedlock);
 240         dvb->enabled = 1;
 241         return ret;
 242
 243 err_disconnect_frontend:
 244         dmx->disconnect_frontend(dmx);
 245 err_remove_mem_frontend:
 246         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 247 err_remove_hw_frontend:
 248         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 249 err_dvb_dmxdev_release:
 250         dvb_dmxdev_release(&dvb->dmxdev);
 251 err_dvb_dmx_release:
 252         dvb_dmx_release(dvbdemux);
 253 err_dvb_unregister_adapter:
 254         dvb_unregister_adapter(dvb_adapter);
 255 err_out:
 256         return ret;
 257 }
 258
 259 void cx18_dvb_unregister(struct cx18_stream *stream)
 260 {
 261         struct cx18 *cx = stream->cx;
 262         struct cx18_dvb *dvb = &stream->dvb;
 263         struct dvb_adapter *dvb_adapter;
 264         struct dvb_demux *dvbdemux;
 265         struct dmx_demux *dmx;
 266
 267         CX18_INFO("unregister DVB\n");
 268
 269         dvb_adapter = &dvb->dvb_adapter;
 270         dvbdemux = &dvb->demux;
 271         dmx = &dvbdemux->dmx;
 272
 273         dmx->close(dmx);
 274         dvb_net_release(&dvb->dvbnet);
 275         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 276         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 277         dvb_dmxdev_release(&dvb->dmxdev);
 278         dvb_dmx_release(dvbdemux);
 279         dvb_unregister_frontend(dvb->fe);
 280         dvb_frontend_detach(dvb->fe);
 281         dvb_unregister_adapter(dvb_adapter);
 282 }
 283
 284 /* All the DVB attach calls go here, this function get's modified
 285  * for each new card. cx18_dvb_start_feed() will also need changes.
 286  */
 287 static int dvb_register(struct cx18_stream *stream)
 288 {
 289         struct cx18_dvb *dvb = &stream->dvb;
 290         struct cx18 *cx = stream->cx;
 291         int ret = 0;
 292
 293         switch (cx->card->type) {
 294         case CX18_CARD_HVR_1600_ESMT:
 295         case CX18_CARD_HVR_1600_SAMSUNG:
 296                 dvb->fe = dvb_attach(s5h1409_attach,
 297                         &hauppauge_hvr1600_config,
 298                         &cx->i2c_adap[0]);
 299                 if (dvb->fe != NULL) {
 300                         dvb_attach(mxl5005s_attach, dvb->fe,
 301                                 &cx->i2c_adap[0],
 302                                 &hauppauge_hvr1600_tuner);
 303                         ret = 0;
 304                 }
 305                 break;
 306         case CX18_CARD_LEADTEK_DVR3100H:
 307                 dvb->fe = dvb_attach(zl10353_attach,
 308                                      &leadtek_dvr3100h_demod,
 309                                      &cx->i2c_adap[1]);
 310                 if (dvb->fe != NULL) {
 311                         struct dvb_frontend *fe;
 312                         struct xc2028_config cfg = {
 313                                 .i2c_adap = &cx->i2c_adap[1],
 314                                 .i2c_addr = 0xc2 >> 1,
 315                                 .ctrl = NULL,
 316                         };
 317                         static struct xc2028_ctrl ctrl = {
 318                                 .fname   = XC2028_DEFAULT_FIRMWARE,
 319                                 .max_len = 64,
 320                                 .demod   = XC3028_FE_ZARLINK456,
 321                                 .type    = XC2028_AUTO,
 322                         };
 323
 324                         fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
 325                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 326                                 fe->ops.tuner_ops.set_config(fe, &ctrl);
 327                 }
 328                 break;
 329         default:
 330                 /* No Digital Tv Support */
 331                 break;
 332         }
 333
 334         if (dvb->fe == NULL) {
 335                 CX18_ERR("frontend initialization failed\n");
 336                 return -1;
 337         }
 338
 339         dvb->fe->callback = cx18_reset_tuner_gpio;
 340
 341         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 342         if (ret < 0) {
 343                 if (dvb->fe->ops.release)
 344                         dvb->fe->ops.release(dvb->fe);
 345                 return ret;
 346         }
 347
 348         /*
 349          * The firmware seems to enable the TS DMUX clock
 350          * under various circumstances.  However, since we know we
 351          * might use it, let's just turn it on ourselves here.
 352          */
 353         cx18_write_reg_expect(cx,
 354                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK,
 355                               CX18_CLOCK_ENABLE2,
 356                               CX18_DMUX_CLK_MASK,
 357                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK);
 358
 359         return ret;
 360 }