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         .qam_gain        = 0x02,
  65         .AgcMasterByte   = 0x00,
  66 };
  67
  68 static struct s5h1409_config hauppauge_hvr1600_config = {
  69         .demod_address = 0x32 >> 1,
  70         .output_mode   = S5H1409_SERIAL_OUTPUT,
  71         .gpio          = S5H1409_GPIO_ON,
  72         .qam_if        = 44000,
  73         .inversion     = S5H1409_INVERSION_OFF,
  74         .status_mode   = S5H1409_DEMODLOCKING,
  75         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
  76         .hvr1600_opt   = S5H1409_HVR1600_OPTIMIZE
  77 };
  78
  79 /*
  80  * CX18_CARD_LEADTEK_DVR3100H
  81  */
  82 /* Information/confirmation of proper config values provided by Terry Wu */
  83 static struct zl10353_config leadtek_dvr3100h_demod = {
  84         .demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
  85         .if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
  86         .parallel_ts           = 1,         /* Not a serial TS */
  87         .no_tuner              = 1,         /* XC3028 is not behind the gate */
  88         .disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
  89 };
  90
  91 /*
  92  * CX18_CARD_YUAN_MPC718
  93  */
  94 /*
  95  * Due to
  96  *
  97  * 1. an absence of information on how to prgram the MT352
  98  * 2. the Linux mt352 module pushing MT352 initialzation off onto us here
  99  *
 100  * We have to use an init sequence that *you* must extract from the Windows
 101  * driver (yuanrap.sys) and which we load as a firmware.
 102  *
 103  * If someone can provide me with a Zarlink MT352 (Intel CE6352?) Design Manual
 104  * with chip programming details, then I can remove this annoyance.
 105  */
 106 static int yuan_mpc718_mt352_reqfw(struct cx18_stream *stream,
 107                                    const struct firmware **fw)
 108 {
 109         struct cx18 *cx = stream->cx;
 110         const char *fn = "dvb-cx18-mpc718-mt352.fw";
 111         int ret;
 112
 113         ret = request_firmware(fw, fn, &cx->pci_dev->dev);
 114         if (ret)
 115                 CX18_ERR("Unable to open firmware file %s\n", fn);
 116         else {
 117                 size_t sz = (*fw)->size;
 118                 if (sz < 2 || sz > 64 || (sz % 2) != 0) {
 119                         CX18_ERR("Firmware %s has a bad size: %lu bytes\n",
 120                                  fn, (unsigned long) sz);
 121                         ret = -EILSEQ;
 122                         release_firmware(*fw);
 123                         *fw = NULL;
 124                 }
 125         }
 126
 127         if (ret) {
 128                 CX18_ERR("The MPC718 board variant with the MT352 DVB-T"
 129                           "demodualtor will not work without it\n");
 130                 CX18_ERR("Run 'linux/Documentation/dvb/get_dvb_firmware "
 131                           "mpc718' if you need the firmware\n");
 132         }
 133         return ret;
 134 }
 135
 136 static int yuan_mpc718_mt352_init(struct dvb_frontend *fe)
 137 {
 138         struct cx18_dvb *dvb = container_of(fe->dvb,
 139                                             struct cx18_dvb, dvb_adapter);
 140         struct cx18_stream *stream = container_of(dvb, struct cx18_stream, dvb);
 141         const struct firmware *fw = NULL;
 142         int ret;
 143         int i;
 144         u8 buf[3];
 145
 146         ret = yuan_mpc718_mt352_reqfw(stream, &fw);
 147         if (ret)
 148                 return ret;
 149
 150         /* Loop through all the register-value pairs in the firmware file */
 151         for (i = 0; i < fw->size; i += 2) {
 152                 buf[0] = fw->data[i];
 153                 /* Intercept a few registers we want to set ourselves */
 154                 switch (buf[0]) {
 155                 case TRL_NOMINAL_RATE_0:
 156                         /* Set our custom OFDM bandwidth in the case below */
 157                         break;
 158                 case TRL_NOMINAL_RATE_1:
 159                         /* 6 MHz: 64/7 * 6/8 / 20.48 * 2^16 = 0x55b6.db6 */
 160                         /* 7 MHz: 64/7 * 7/8 / 20.48 * 2^16 = 0x6400 */
 161                         /* 8 MHz: 64/7 * 8/8 / 20.48 * 2^16 = 0x7249.249 */
 162                         buf[1] = 0x72;
 163                         buf[2] = 0x49;
 164                         mt352_write(fe, buf, 3);
 165                         break;
 166                 case INPUT_FREQ_0:
 167                         /* Set our custom IF in the case below */
 168                         break;
 169                 case INPUT_FREQ_1:
 170                         /* 4.56 MHz IF: (20.48 - 4.56)/20.48 * 2^14 = 0x31c0 */
 171                         buf[1] = 0x31;
 172                         buf[2] = 0xc0;
 173                         mt352_write(fe, buf, 3);
 174                         break;
 175                 default:
 176                         /* Pass through the register-value pair from the fw */
 177                         buf[1] = fw->data[i+1];
 178                         mt352_write(fe, buf, 2);
 179                         break;
 180                 }
 181         }
 182
 183         buf[0] = (u8) TUNER_GO;
 184         buf[1] = 0x01; /* Go */
 185         mt352_write(fe, buf, 2);
 186         release_firmware(fw);
 187         return 0;
 188 }
 189
 190 static struct mt352_config yuan_mpc718_mt352_demod = {
 191         .demod_address = 0x1e >> 1,
 192         .adc_clock     = 20480,     /* 20.480 MHz */
 193         .if2           =  4560,     /*  4.560 MHz */
 194         .no_tuner      = 1,         /* XC3028 is not behind the gate */
 195         .demod_init    = yuan_mpc718_mt352_init,
 196 };
 197
 198 static struct zl10353_config yuan_mpc718_zl10353_demod = {
 199         .demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
 200         .if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
 201         .parallel_ts           = 1,         /* Not a serial TS */
 202         .no_tuner              = 1,         /* XC3028 is not behind the gate */
 203         .disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
 204 };
 205
 206 static int dvb_register(struct cx18_stream *stream);
 207
 208 /* Kernel DVB framework calls this when the feed needs to start.
 209  * The CX18 framework should enable the transport DMA handling
 210  * and queue processing.
 211  */
 212 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
 213 {
 214         struct dvb_demux *demux = feed->demux;
 215         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
 216         struct cx18 *cx = stream->cx;
 217         int ret;
 218         u32 v;
 219
 220         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
 221                         feed->pid, feed->index);
 222
 223         mutex_lock(&cx->serialize_lock);
 224         ret = cx18_init_on_first_open(cx);
 225         mutex_unlock(&cx->serialize_lock);
 226         if (ret) {
 227                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
 228                 return ret;
 229         }
 230         ret = -EINVAL;
 231
 232         switch (cx->card->type) {
 233         case CX18_CARD_HVR_1600_ESMT:
 234         case CX18_CARD_HVR_1600_SAMSUNG:
 235                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 236                 v |= 0x00400000; /* Serial Mode */
 237                 v |= 0x00002000; /* Data Length - Byte */
 238                 v |= 0x00010000; /* Error - Polarity */
 239                 v |= 0x00020000; /* Error - Passthru */
 240                 v |= 0x000c0000; /* Error - Ignore */
 241                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
 242                 break;
 243
 244         case CX18_CARD_LEADTEK_DVR3100H:
 245         case CX18_CARD_YUAN_MPC718:
 246         default:
 247                 /* Assumption - Parallel transport - Signalling
 248                  * undefined or default.
 249                  */
 250                 break;
 251         }
 252
 253         if (!demux->dmx.frontend)
 254                 return -EINVAL;
 255
 256         if (!stream)
 257                 return -EINVAL;
 258
 259         mutex_lock(&stream->dvb.feedlock);
 260         if (stream->dvb.feeding++ == 0) {
 261                 CX18_DEBUG_INFO("Starting Transport DMA\n");
 262                 set_bit(CX18_F_S_STREAMING, &stream->s_flags);
 263                 ret = cx18_start_v4l2_encode_stream(stream);
 264                 if (ret < 0) {
 265                         CX18_DEBUG_INFO("Failed to start Transport DMA\n");
 266                         stream->dvb.feeding--;
 267                         if (stream->dvb.feeding == 0)
 268                                 clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
 269                 }
 270         } else
 271                 ret = 0;
 272         mutex_unlock(&stream->dvb.feedlock);
 273
 274         return ret;
 275 }
 276
 277 /* Kernel DVB framework calls this when the feed needs to stop. */
 278 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
 279 {
 280         struct dvb_demux *demux = feed->demux;
 281         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
 282         struct cx18 *cx = stream->cx;
 283         int ret = -EINVAL;
 284
 285         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
 286                         feed->pid, feed->index);
 287
 288         if (stream) {
 289                 mutex_lock(&stream->dvb.feedlock);
 290                 if (--stream->dvb.feeding == 0) {
 291                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
 292                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
 293                 } else
 294                         ret = 0;
 295                 mutex_unlock(&stream->dvb.feedlock);
 296         }
 297
 298         return ret;
 299 }
 300
 301 int cx18_dvb_register(struct cx18_stream *stream)
 302 {
 303         struct cx18 *cx = stream->cx;
 304         struct cx18_dvb *dvb = &stream->dvb;
 305         struct dvb_adapter *dvb_adapter;
 306         struct dvb_demux *dvbdemux;
 307         struct dmx_demux *dmx;
 308         int ret;
 309
 310         if (!dvb)
 311                 return -EINVAL;
 312
 313         ret = dvb_register_adapter(&dvb->dvb_adapter,
 314                         CX18_DRIVER_NAME,
 315                         THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
 316         if (ret < 0)
 317                 goto err_out;
 318
 319         dvb_adapter = &dvb->dvb_adapter;
 320
 321         dvbdemux = &dvb->demux;
 322
 323         dvbdemux->priv = (void *)stream;
 324
 325         dvbdemux->filternum = 256;
 326         dvbdemux->feednum = 256;
 327         dvbdemux->start_feed = cx18_dvb_start_feed;
 328         dvbdemux->stop_feed = cx18_dvb_stop_feed;
 329         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
 330                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
 331         ret = dvb_dmx_init(dvbdemux);
 332         if (ret < 0)
 333                 goto err_dvb_unregister_adapter;
 334
 335         dmx = &dvbdemux->dmx;
 336
 337         dvb->hw_frontend.source = DMX_FRONTEND_0;
 338         dvb->mem_frontend.source = DMX_MEMORY_FE;
 339         dvb->dmxdev.filternum = 256;
 340         dvb->dmxdev.demux = dmx;
 341
 342         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
 343         if (ret < 0)
 344                 goto err_dvb_dmx_release;
 345
 346         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
 347         if (ret < 0)
 348                 goto err_dvb_dmxdev_release;
 349
 350         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
 351         if (ret < 0)
 352                 goto err_remove_hw_frontend;
 353
 354         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
 355         if (ret < 0)
 356                 goto err_remove_mem_frontend;
 357
 358         ret = dvb_register(stream);
 359         if (ret < 0)
 360                 goto err_disconnect_frontend;
 361
 362         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
 363
 364         CX18_INFO("DVB Frontend registered\n");
 365         CX18_INFO("Registered DVB adapter%d for %s (%d x %d.%02d kB)\n",
 366                   stream->dvb.dvb_adapter.num, stream->name,
 367                   stream->buffers, stream->buf_size/1024,
 368                   (stream->buf_size * 100 / 1024) % 100);
 369
 370         mutex_init(&dvb->feedlock);
 371         dvb->enabled = 1;
 372         return ret;
 373
 374 err_disconnect_frontend:
 375         dmx->disconnect_frontend(dmx);
 376 err_remove_mem_frontend:
 377         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 378 err_remove_hw_frontend:
 379         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 380 err_dvb_dmxdev_release:
 381         dvb_dmxdev_release(&dvb->dmxdev);
 382 err_dvb_dmx_release:
 383         dvb_dmx_release(dvbdemux);
 384 err_dvb_unregister_adapter:
 385         dvb_unregister_adapter(dvb_adapter);
 386 err_out:
 387         return ret;
 388 }
 389
 390 void cx18_dvb_unregister(struct cx18_stream *stream)
 391 {
 392         struct cx18 *cx = stream->cx;
 393         struct cx18_dvb *dvb = &stream->dvb;
 394         struct dvb_adapter *dvb_adapter;
 395         struct dvb_demux *dvbdemux;
 396         struct dmx_demux *dmx;
 397
 398         CX18_INFO("unregister DVB\n");
 399
 400         dvb_adapter = &dvb->dvb_adapter;
 401         dvbdemux = &dvb->demux;
 402         dmx = &dvbdemux->dmx;
 403
 404         dmx->close(dmx);
 405         dvb_net_release(&dvb->dvbnet);
 406         dmx->remove_frontend(dmx, &dvb->mem_frontend);
 407         dmx->remove_frontend(dmx, &dvb->hw_frontend);
 408         dvb_dmxdev_release(&dvb->dmxdev);
 409         dvb_dmx_release(dvbdemux);
 410         dvb_unregister_frontend(dvb->fe);
 411         dvb_frontend_detach(dvb->fe);
 412         dvb_unregister_adapter(dvb_adapter);
 413 }
 414
 415 /* All the DVB attach calls go here, this function get's modified
 416  * for each new card. cx18_dvb_start_feed() will also need changes.
 417  */
 418 static int dvb_register(struct cx18_stream *stream)
 419 {
 420         struct cx18_dvb *dvb = &stream->dvb;
 421         struct cx18 *cx = stream->cx;
 422         int ret = 0;
 423
 424         switch (cx->card->type) {
 425         case CX18_CARD_HVR_1600_ESMT:
 426         case CX18_CARD_HVR_1600_SAMSUNG:
 427                 dvb->fe = dvb_attach(s5h1409_attach,
 428                         &hauppauge_hvr1600_config,
 429                         &cx->i2c_adap[0]);
 430                 if (dvb->fe != NULL) {
 431                         dvb_attach(mxl5005s_attach, dvb->fe,
 432                                 &cx->i2c_adap[0],
 433                                 &hauppauge_hvr1600_tuner);
 434                         ret = 0;
 435                 }
 436                 break;
 437         case CX18_CARD_LEADTEK_DVR3100H:
 438                 dvb->fe = dvb_attach(zl10353_attach,
 439                                      &leadtek_dvr3100h_demod,
 440                                      &cx->i2c_adap[1]);
 441                 if (dvb->fe != NULL) {
 442                         struct dvb_frontend *fe;
 443                         struct xc2028_config cfg = {
 444                                 .i2c_adap = &cx->i2c_adap[1],
 445                                 .i2c_addr = 0xc2 >> 1,
 446                                 .ctrl = NULL,
 447                         };
 448                         static struct xc2028_ctrl ctrl = {
 449                                 .fname   = XC2028_DEFAULT_FIRMWARE,
 450                                 .max_len = 64,
 451                                 .demod   = XC3028_FE_ZARLINK456,
 452                                 .type    = XC2028_AUTO,
 453                         };
 454
 455                         fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
 456                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 457                                 fe->ops.tuner_ops.set_config(fe, &ctrl);
 458                 }
 459                 break;
 460         case CX18_CARD_YUAN_MPC718:
 461                 /*
 462                  * TODO
 463                  * Apparently, these cards also could instead have a
 464                  * DiBcom demod supported by one of the db7000 drivers
 465                  */
 466                 dvb->fe = dvb_attach(mt352_attach,
 467                                      &yuan_mpc718_mt352_demod,
 468                                      &cx->i2c_adap[1]);
 469                 if (dvb->fe == NULL)
 470                         dvb->fe = dvb_attach(zl10353_attach,
 471                                              &yuan_mpc718_zl10353_demod,
 472                                              &cx->i2c_adap[1]);
 473                 if (dvb->fe != NULL) {
 474                         struct dvb_frontend *fe;
 475                         struct xc2028_config cfg = {
 476                                 .i2c_adap = &cx->i2c_adap[1],
 477                                 .i2c_addr = 0xc2 >> 1,
 478                                 .ctrl = NULL,
 479                         };
 480                         static struct xc2028_ctrl ctrl = {
 481                                 .fname   = XC2028_DEFAULT_FIRMWARE,
 482                                 .max_len = 64,
 483                                 .demod   = XC3028_FE_ZARLINK456,
 484                                 .type    = XC2028_AUTO,
 485                         };
 486
 487                         fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
 488                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 489                                 fe->ops.tuner_ops.set_config(fe, &ctrl);
 490                 }
 491                 break;
 492         default:
 493                 /* No Digital Tv Support */
 494                 break;
 495         }
 496
 497         if (dvb->fe == NULL) {
 498                 CX18_ERR("frontend initialization failed\n");
 499                 return -1;
 500         }
 501
 502         dvb->fe->callback = cx18_reset_tuner_gpio;
 503
 504         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
 505         if (ret < 0) {
 506                 if (dvb->fe->ops.release)
 507                         dvb->fe->ops.release(dvb->fe);
 508                 return ret;
 509         }
 510
 511         /*
 512          * The firmware seems to enable the TS DMUX clock
 513          * under various circumstances.  However, since we know we
 514          * might use it, let's just turn it on ourselves here.
 515          */
 516         cx18_write_reg_expect(cx,
 517                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK,
 518                               CX18_CLOCK_ENABLE2,
 519                               CX18_DMUX_CLK_MASK,
 520                               (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK);
 521
 522         return ret;
 523 }