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
  34 #include <linux/firmware.h>
  35 #include "mt352.h"
  36 #include "mt352_priv.h"
  37 #include "tuner-xc2028.h"
  38
  39 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  40
  41 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
  42 #define CX18_CLOCK_ENABLE2               0xc71024
  43 #define CX18_DMUX_CLK_MASK               0x0080
  44
  45 /*
  46  * CX18_CARD_HVR_1600_ESMT
  47  * CX18_CARD_HVR_1600_SAMSUNG
  48  */
  49
  50 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
  51         .i2c_address     = 0xC6 >> 1,
  52         .if_freq         = IF_FREQ_5380000HZ,
  53         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
  54         .agc_mode        = MXL_SINGLE_AGC,
  55         .tracking_filter = MXL_TF_C_H,
  56         .rssi_enable     = MXL_RSSI_ENABLE,
  57         .cap_select      = MXL_CAP_SEL_ENABLE,
  58         .div_out         = MXL_DIV_OUT_4,
  59         .clock_out       = MXL_CLOCK_OUT_DISABLE,
  60         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
  61         .top             = MXL5005S_TOP_25P2,
  62         .mod_mode        = MXL_DIGITAL_MODE,
  63         .if_mode         = MXL_ZERO_IF,
  64         .AgcMasterByte   = 0x00,
  65 };
  66
  67 static struct s5h1409_config hauppauge_hvr1600_config = {
  68         .demod_address = 0x32 >> 1,
  69         .output_mode   = S5H1409_SERIAL_OUTPUT,
  70         .gpio          = S5H1409_GPIO_ON,
  71         .qam_if        = 44000,
  72         .inversion     = S5H1409_INVERSION_OFF,
  73         .status_mode   = S5H1409_DEMODLOCKING,
  74         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
  75 };
  76
  77 /*
  78  * CX18_CARD_LEADTEK_DVR3100H
  79  */
  80 /* Information/confirmation of proper config values provided by Terry Wu */
  81 static struct zl10353_config leadtek_dvr3100h_demod = {
  82         .demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
  83         .if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
  84         .parallel_ts           = 1,         /* Not a serial TS */
  85         .no_tuner              = 1,         /* XC3028 is not behind the gate */
  86         .disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
  87 };
  88
  89 /*
  90  * CX18_CARD_YUAN_MPC718
  91  */
  92 /*
  93  * Due to
  94  *
  95  * 1. an absence of information on how to prgram the MT352
  96  * 2. the Linux mt352 module pushing MT352 initialzation off onto us here
  97  *
  98  * We have to use an init sequence that *you* must extract from the Windows
  99  * driver (yuanrap.sys) and which we load as a firmware.
 100  *
 101  * If someone can provide me with a Zarlink MT352 (Intel CE6352?) Design Manual
 102  * with chip programming details, then I can remove this annoyance.
 103  */
 104 static int yuan_mpc718_mt352_reqfw(struct cx18_stream *stream,
 105                                    const struct firmware **fw)
 106 {
 107         struct cx18 *cx = stream->cx;
 108         const char *fn = "dvb-cx18-mpc718-mt352.fw";
 109         int ret;
 110
 111         ret = request_firmware(fw, fn, &cx->pci_dev->dev);
 112         if (ret)
 113                 CX18_ERR("Unable to open firmware file %s\n", fn);
 114         else {
 115                 size_t sz = (*fw)->size;
 116                 if (sz < 2 || sz > 64 || (sz % 2) != 0) {
 117                         CX18_ERR("Firmware %s has a bad size: %lu bytes\n",
 118                                  fn, (unsigned long) sz);
 119                         ret = -EILSEQ;
 120                         release_firmware(*fw);
 121                         *fw = NULL;
 122                 }
 123         }
 124
 125         if (ret) {
 126                 CX18_ERR("The MPC718 board variant with the MT352 DVB-T"
 127                           "demodualtor will not work without it\n");
 128                 CX18_ERR("Run 'linux/Documentation/dvb/get_dvb_firmware "
 129                           "mpc718' if you need the firmware\n");
 130         }
 131         return ret;
 132 }
 133
 134 static int yuan_mpc718_mt352_init(struct dvb_frontend *fe)
 135 {
 136         struct cx18_dvb *dvb = container_of(fe->dvb,
 137                                             struct cx18_dvb, dvb_adapter);
 138         struct cx18_stream *stream = container_of(dvb, struct cx18_stream, dvb);
 139         const struct firmware *fw = NULL;
 140         int ret;
 141         int i;
 142         u8 buf[3];
 143
 144         ret = yuan_mpc718_mt352_reqfw(stream, &fw);
 145         if (ret)
 146                 return ret;
 147
 148         /* Loop through all the register-value pairs in the firmware file */
 149         for (i = 0; i < fw->size; i += 2) {
 150                 buf[0] = fw->data[i];
 151                 /* Intercept a few registers we want to set ourselves */
 152                 switch (buf[0]) {
 153                 case TRL_NOMINAL_RATE_0:
 154                         /* Set our custom OFDM bandwidth in the case below */
 155                         break;
 156                 case TRL_NOMINAL_RATE_1:
 157                         /* 6 MHz: 64/7 * 6/8 / 20.48 * 2^16 = 0x55b6.db6 */
 158                         /* 7 MHz: 64/7 * 7/8 / 20.48 * 2^16 = 0x6400 */
 159                         /* 8 MHz: 64/7 * 8/8 / 20.48 * 2^16 = 0x7249.249 */
 160                         buf[1] = 0x72;
 161                         buf[2] = 0x49;
 162                         mt352_write(fe, buf, 3);
 163                         break;
 164                 case INPUT_FREQ_0:
 165                         /* Set our custom IF in the case below */
 166                         break;
 167                 case INPUT_FREQ_1:
 168                         /* 4.56 MHz IF: (20.48 - 4.56)/20.48 * 2^14 = 0x31c0 */
 169                         buf[1] = 0x31;
 170                         buf[2] = 0xc0;
 171                         mt352_write(fe, buf, 3);
 172                         break;
 173                 default:
 174                         /* Pass through the register-value pair from the fw */
 175                         buf[1] = fw->data[i+1];
 176                         mt352_write(fe, buf, 2);
 177                         break;
 178                 }
 179         }
 180
 181         buf[0] = (u8) TUNER_GO;
 182         buf[1] = 0x01; /* Go */
 183         mt352_write(fe, buf, 2);
 184         release_firmware(fw);
 185         return 0;
 186 }
 187
 188 static struct mt352_config yuan_mpc718_mt352_demod = {
 189         .demod_address = 0x1e >> 1,
 190         .adc_clock     = 20480,     /* 20.480 MHz */
 191         .if2           =  4560,     /*  4.560 MHz */
 192         .no_tuner      = 1,         /* XC3028 is not behind the gate */
 193         .demod_init    = yuan_mpc718_mt352_init,
 194 };
 195
 196 static struct zl10353_config yuan_mpc718_zl10353_demod = {
 197         .demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
 198         .if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
 199         .parallel_ts           = 1,         /* Not a serial TS */
 200         .no_tuner              = 1,         /* XC3028 is not behind the gate */
 201         .disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
 202 };
 203
 204 static int dvb_register(struct cx18_stream *stream);
 205
 206 /* Kernel DVB framework calls this when the feed needs to start.
 207  * The CX18 framework should enable the transport DMA handling
 208  * and queue processing.
 209  */
 210 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
 211 {
 212         struct dvb_demux *demux = feed->demux;
 213         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
 214         struct cx18 *cx = stream->cx;
 215         int ret;
 216         u32 v;
 217
 218         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
 219                         feed->pid, feed->index);
 220
 221         mutex_lock(&cx->serialize_lock);
 222         ret = cx18_init_on_first_open(cx);
 223         mutex_unlock(&cx->serialize_lock);
 224         if (ret) {
 225                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
 226                 return ret;
 227         }
 228         ret = -EINVAL;
 229
 230         switch (cx->card->type) {
 231         case CX18_CARD_HVR_1600_ESMT:
 232         case CX18_CARD_HVR_1600_SAMSUNG:
 233                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 234                 v |= 0x00400000; /* Serial Mode */
 235                 v |= 0x00002000; /* Data Length - Byte */
 236                 v |= 0x00010000; /* Error - Polarity */
 237                 v |= 0x00020000; /* Error - Passthru */
 238                 v |= 0x000c0000; /* Error - Ignore */
 239                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 240                 break;
 241
 242         case CX18_CARD_LEADTEK_DVR3100H:
 243         case CX18_CARD_YUAN_MPC718:
 244         default:
 245                 /* Assumption - Parallel transport - Signalling
 246                  * undefined or default.
 247                  */
 248                 break;
 249         }
 250
 251         if (!demux->dmx.frontend)
 252                 return -EINVAL;
 253
 254         if (!stream)
 255                 return -EINVAL;
 256
 257         mutex_lock(&stream->dvb.feedlock);
 258         if (stream->dvb.feeding++ == 0) {
 259                 CX18_DEBUG_INFO("Starting Transport DMA\n");
 260                 set_bit(CX18_F_S_STREAMING, &stream->s_flags);
 261                 ret = cx18_start_v4l2_encode_stream(stream);
 262                 if (ret < 0) {
 263                         CX18_DEBUG_INFO("Failed to start Transport DMA\n");
 264                         stream->dvb.feeding--;
 265                         if (stream->dvb.feeding == 0)
 266                                 clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
 267                 }
 268         } else
 269                 ret = 0;
 270         mutex_unlock(&stream->dvb.feedlock);
 271
 272         return ret;
 273 }
 274
 275 /* Kernel DVB framework calls this when the feed needs to stop. */
 276 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 277 {
 278         struct dvb_demux *demux = feed->demux;
 279         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 280         struct cx18 *cx = stream->cx;
 281         int ret = -EINVAL;
 282
 283         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 284                         feed->pid, feed->index);
 285
 286         if (stream) {
 287                 mutex_lock(&stream->dvb.feedlock);
 288                 if (--stream->dvb.feeding == 0) {
 289                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 290                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 291                 } else
 292                         ret = 0;
 293                 mutex_unlock(&stream->dvb.feedlock);
 294         }
 295
 296         return ret;
 297 }
 298
 299 int cx18_dvb_register(struct cx18_stream *stream)
 300 {
 301         struct cx18 *cx = stream->cx;
 302         struct cx18_dvb *dvb = &stream->dvb;
 303         struct dvb_adapter *dvb_adapter;
 304         struct dvb_demux *dvbdemux;
 305         struct dmx_demux *dmx;
 306         int ret;
 307
 308         if (!dvb)
 309                 return -EINVAL;
 310
 311         ret = dvb_register_adapter(&dvb->dvb_adapter,
 312                         CX18_DRIVER_NAME,
 313                         THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
 314         if (ret < 0)
 315                 goto err_out;
 316
 317         dvb_adapter = &dvb->dvb_adapter;
 318
 319         dvbdemux = &dvb->demux;
 320
 321         dvbdemux->priv = (void *)stream;
 322
 323         dvbdemux->filternum = 256;
 324         dvbdemux->feednum = 256;
 325         dvbdemux->start_feed = cx18_dvb_start_feed;
 326         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 327         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 328                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 329         ret = dvb_dmx_init(dvbdemux);
 330         if (ret < 0)
 331                 goto err_dvb_unregister_adapter;
 332
 333         dmx = &dvbdemux->dmx;
 334
 335         dvb->hw_frontend.source = DMX_FRONTEND_0;
 336         dvb->mem_frontend.source = DMX_MEMORY_FE;
 337         dvb->dmxdev.filternum = 256;
 338         dvb->dmxdev.demux = dmx;
 339
 340         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 341         if (ret < 0)
 342                 goto err_dvb_dmx_release;
 343
 344         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 345         if (ret < 0)
 346                 goto err_dvb_dmxdev_release;
 347
 348         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 349         if (ret < 0)
 350                 goto err_remove_hw_frontend;
 351
 352         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 353         if (ret < 0)
 354                 goto err_remove_mem_frontend;
 355
 356         ret = dvb_register(stream);
 357         if (ret < 0)
 358                 goto err_disconnect_frontend;
 359
 360         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 361
 362         CX18_INFO("DVB Frontend registered\n");
 363         CX18_INFO("Registered DVB adapter%d for %s (%d x %d kB)\n",
 364                   stream->dvb.dvb_adapter.num, stream->name,
 365                   stream->buffers, stream->buf_size/1024);
 366
 367         mutex_init(&dvb->feedlock);
 368         dvb->enabled = 1;
 369         return ret;
 370
 371 err_disconnect_frontend:
 372         dmx->disconnect_frontend(dmx);
 373 err_remove_mem_frontend:
 374         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 375 err_remove_hw_frontend:
 376         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 377 err_dvb_dmxdev_release:
 378         dvb_dmxdev_release(&dvb->dmxdev);
 379 err_dvb_dmx_release:
 380         dvb_dmx_release(dvbdemux);
 381 err_dvb_unregister_adapter:
 382         dvb_unregister_adapter(dvb_adapter);
 383 err_out:
 384         return ret;
 385 }
 386
 387 void cx18_dvb_unregister(struct cx18_stream *stream)
 388 {
 389         struct cx18 *cx = stream->cx;
 390         struct cx18_dvb *dvb = &stream->dvb;
 391         struct dvb_adapter *dvb_adapter;
 392         struct dvb_demux *dvbdemux;
 393         struct dmx_demux *dmx;
 394
 395         CX18_INFO("unregister DVB\n");
 396
 397         dvb_adapter = &dvb->dvb_adapter;
 398         dvbdemux = &dvb->demux;
 399         dmx = &dvbdemux->dmx;
 400
 401         dmx->close(dmx);
 402         dvb_net_release(&dvb->dvbnet);
 403         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 404         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 405         dvb_dmxdev_release(&dvb->dmxdev);
 406         dvb_dmx_release(dvbdemux);
 407         dvb_unregister_frontend(dvb->fe);
 408         dvb_frontend_detach(dvb->fe);
 409         dvb_unregister_adapter(dvb_adapter);
 410 }
 411
 412 /* All the DVB attach calls go here, this function get's modified
 413  * for each new card. cx18_dvb_start_feed() will also need changes.
 414  */
 415 static int dvb_register(struct cx18_stream *stream)
 416 {
 417         struct cx18_dvb *dvb = &stream->dvb;
 418         struct cx18 *cx = stream->cx;
 419         int ret = 0;
 420
 421         switch (cx->card->type) {
 422         case CX18_CARD_HVR_1600_ESMT:
 423         case CX18_CARD_HVR_1600_SAMSUNG:
 424                 dvb->fe = dvb_attach(s5h1409_attach,
 425                         &hauppauge_hvr1600_config,
 426                         &cx->i2c_adap[0]);
 427                 if (dvb->fe != NULL) {
 428                         dvb_attach(mxl5005s_attach, dvb->fe,
 429                                 &cx->i2c_adap[0],
 430                                 &hauppauge_hvr1600_tuner);
 431                         ret = 0;
 432                 }
 433                 break;
 434         case CX18_CARD_LEADTEK_DVR3100H:
 435                 dvb->fe = dvb_attach(zl10353_attach,
 436                                      &leadtek_dvr3100h_demod,
 437                                      &cx->i2c_adap[1]);
 438                 if (dvb->fe != NULL) {
 439                         struct dvb_frontend *fe;
 440                         struct xc2028_config cfg = {
 441                                 .i2c_adap = &cx->i2c_adap[1],
 442                                 .i2c_addr = 0xc2 >> 1,
 443                                 .ctrl = NULL,
 444                         };
 445                         static struct xc2028_ctrl ctrl = {
 446                                 .fname   = XC2028_DEFAULT_FIRMWARE,
 447                                 .max_len = 64,
 448                                 .demod   = XC3028_FE_ZARLINK456,
 449                                 .type    = XC2028_AUTO,
 450                         };
 451
 452                         fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
 453                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 454                                 fe->ops.tuner_ops.set_config(fe, &ctrl);
 455                 }
 456                 break;
 457         case CX18_CARD_YUAN_MPC718:
 458                 /*
 459                  * TODO
 460                  * Apparently, these cards also could instead have a
 461                  * DiBcom demod supported by one of the db7000 drivers
 462                  */
 463                 dvb->fe = dvb_attach(mt352_attach,
 464                                      &yuan_mpc718_mt352_demod,
 465                                      &cx->i2c_adap[1]);
 466                 if (dvb->fe == NULL)
 467                         dvb->fe = dvb_attach(zl10353_attach,
 468                                              &yuan_mpc718_zl10353_demod,
 469                                              &cx->i2c_adap[1]);
 470                 if (dvb->fe != NULL) {
 471                         struct dvb_frontend *fe;
 472                         struct xc2028_config cfg = {
 473                                 .i2c_adap = &cx->i2c_adap[1],
 474                                 .i2c_addr = 0xc2 >> 1,
 475                                 .ctrl = NULL,
 476                         };
 477                         static struct xc2028_ctrl ctrl = {
 478                                 .fname   = XC2028_DEFAULT_FIRMWARE,
 479                                 .max_len = 64,
 480                                 .demod   = XC3028_FE_ZARLINK456,
 481                                 .type    = XC2028_AUTO,
 482                         };
 483
 484                         fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
 485                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 486                                 fe->ops.tuner_ops.set_config(fe, &ctrl);
 487                 }
 488                 break;
 489         default:
 490                 /* No Digital Tv Support */
 491                 break;
 492         }
 493
 494         if (dvb->fe == NULL) {
 495                 CX18_ERR("frontend initialization failed\n");
 496                 return -1;
 497         }
 498
 499         dvb->fe->callback = cx18_reset_tuner_gpio;
 500
 501         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 502         if (ret < 0) {
 503                 if (dvb->fe->ops.release)
 504                         dvb->fe->ops.release(dvb->fe);
 505                 return ret;
 506         }
 507
 508         /*
 509          * The firmware seems to enable the TS DMUX clock
 510          * under various circumstances.  However, since we know we
 511          * might use it, let's just turn it on ourselves here.
 512          */
 513         cx18_write_reg_expect(cx,
 514                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK,
 515                               CX18_CLOCK_ENABLE2,
 516                               CX18_DMUX_CLK_MASK,
 517                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK);
 518
 519         return ret;
 520 }