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