git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/tuner-xc2028.c

   1 /* tuner-xc2028
   2  *
   3  * Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
   4  *
   5  * Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com)
   6  *       - frontend interface
   7  *
   8  * This code is placed under the terms of the GNU General Public License v2
   9  */
  10
  11 #include <linux/i2c.h>
  12 #include <asm/div64.h>
  13 #include <linux/firmware.h>
  14 #include <linux/videodev2.h>
  15 #include <linux/delay.h>
  16 #include <media/tuner.h>
  17 #include <linux/mutex.h>
  18 #include "tuner-i2c.h"
  19 #include "tuner-xc2028.h"
  20 #include "tuner-xc2028-types.h"
  21
  22 #include <linux/dvb/frontend.h>
  23 #include "dvb_frontend.h"
  24
  25
  26 #define PREFIX "xc2028"
  27
  28 static int debug;
  29 module_param(debug, int, 0644);
  30 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  31
  32 static char audio_std[8];
  33 module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
  34 MODULE_PARM_DESC(audio_std,
  35         "Audio standard. XC3028 audio decoder explicitly "
  36         "needs to know what audio\n"
  37         "standard is needed for some video standards with audio A2 or NICAM.\n"
  38         "The valid values are:\n"
  39         "A2\n"
  40         "A2/A\n"
  41         "A2/B\n"
  42         "NICAM\n"
  43         "NICAM/A\n"
  44         "NICAM/B\n");
  45
  46 static LIST_HEAD(xc2028_list);
  47 static DEFINE_MUTEX(xc2028_list_mutex);
  48
  49 /* struct for storing firmware table */
  50 struct firmware_description {
  51         unsigned int  type;
  52         v4l2_std_id   id;
  53         unsigned char *ptr;
  54         unsigned int  size;
  55 };
  56
  57 struct firmware_properties {
  58         unsigned int    type;
  59         v4l2_std_id     id;
  60         v4l2_std_id     std_req;
  61         unsigned int    scode_table;
  62         int             scode_nr;
  63 };
  64
  65 struct xc2028_data {
  66         struct list_head        xc2028_list;
  67         struct tuner_i2c_props  i2c_props;
  68         int                     (*tuner_callback) (void *dev,
  69                                                    int command, int arg);
  70         void                    *video_dev;
  71         int                     count;
  72         __u32                   frequency;
  73
  74         struct firmware_description *firm;
  75         int                     firm_size;
  76         __u16                   firm_version;
  77
  78         __u16                   hwmodel;
  79         __u16                   hwvers;
  80
  81         struct xc2028_ctrl      ctrl;
  82
  83         struct firmware_properties cur_fw;
  84
  85         struct mutex lock;
  86 };
  87
  88 #define i2c_send(priv, buf, size) ({                                    \
  89         int _rc;                                                        \
  90         _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size);         \
  91         if (size != _rc)                                                \
  92                 tuner_info("i2c output error: rc = %d (should be %d)\n",\
  93                            _rc, (int)size);                             \
  94         _rc;                                                            \
  95 })
  96
  97 #define i2c_rcv(priv, buf, size) ({                                     \
  98         int _rc;                                                        \
  99         _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size);         \
 100         if (size != _rc)                                                \
 101                 tuner_err("i2c input error: rc = %d (should be %d)\n",  \
 102                            _rc, (int)size);                             \
 103         _rc;                                                            \
 104 })
 105
 106 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({                \
 107         int _rc;                                                        \
 108         _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize,   \
 109                                        ibuf, isize);                    \
 110         if (isize != _rc)                                               \
 111                 tuner_err("i2c input error: rc = %d (should be %d)\n",  \
 112                            _rc, (int)isize);                            \
 113         _rc;                                                            \
 114 })
 115
 116 #define send_seq(priv, data...) ({                                      \
 117         static u8 _val[] = data;                                        \
 118         int _rc;                                                        \
 119         if (sizeof(_val) !=                                             \
 120                         (_rc = tuner_i2c_xfer_send(&priv->i2c_props,    \
 121                                                 _val, sizeof(_val)))) { \
 122                 tuner_err("Error on line %d: %d\n", __LINE__, _rc);     \
 123         } else                                                          \
 124                 msleep(10);                                             \
 125         _rc;                                                            \
 126 })
 127
 128 static unsigned int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
 129 {
 130         unsigned char buf[2];
 131         unsigned char ibuf[2];
 132
 133         tuner_dbg("%s %04x called\n", __FUNCTION__, reg);
 134
 135         buf[0] = reg >> 8;
 136         buf[1] = (unsigned char) reg;
 137
 138         if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
 139                 return -EIO;
 140
 141         *val = (ibuf[1]) | (ibuf[0] << 8);
 142         return 0;
 143 }
 144
 145 void dump_firm_type(unsigned int type)
 146 {
 147          if (type & BASE)
 148                 printk("BASE ");
 149          if (type & INIT1)
 150                 printk("INIT1 ");
 151          if (type & F8MHZ)
 152                 printk("F8MHZ ");
 153          if (type & MTS)
 154                 printk("MTS ");
 155          if (type & D2620)
 156                 printk("D2620 ");
 157          if (type & D2633)
 158                 printk("D2633 ");
 159          if (type & DTV6)
 160                 printk("DTV6 ");
 161          if (type & QAM)
 162                 printk("QAM ");
 163          if (type & DTV7)
 164                 printk("DTV7 ");
 165          if (type & DTV78)
 166                 printk("DTV78 ");
 167          if (type & DTV8)
 168                 printk("DTV8 ");
 169          if (type & FM)
 170                 printk("FM ");
 171          if (type & INPUT1)
 172                 printk("INPUT1 ");
 173          if (type & LCD)
 174                 printk("LCD ");
 175          if (type & NOGD)
 176                 printk("NOGD ");
 177          if (type & MONO)
 178                 printk("MONO ");
 179          if (type & ATSC)
 180                 printk("ATSC ");
 181          if (type & IF)
 182                 printk("IF ");
 183          if (type & LG60)
 184                 printk("LG60 ");
 185          if (type & ATI638)
 186                 printk("ATI638 ");
 187          if (type & OREN538)
 188                 printk("OREN538 ");
 189          if (type & OREN36)
 190                 printk("OREN36 ");
 191          if (type & TOYOTA388)
 192                 printk("TOYOTA388 ");
 193          if (type & TOYOTA794)
 194                 printk("TOYOTA794 ");
 195          if (type & DIBCOM52)
 196                 printk("DIBCOM52 ");
 197          if (type & ZARLINK456)
 198                 printk("ZARLINK456 ");
 199          if (type & CHINA)
 200                 printk("CHINA ");
 201          if (type & F6MHZ)
 202                 printk("F6MHZ ");
 203          if (type & INPUT2)
 204                 printk("INPUT2 ");
 205          if (type & SCODE)
 206                 printk("SCODE ");
 207 }
 208
 209 static  v4l2_std_id parse_audio_std_option(void)
 210 {
 211         if (strcasecmp(audio_std, "A2") == 0)
 212                 return V4L2_STD_A2;
 213         if (strcasecmp(audio_std, "A2/A") == 0)
 214                 return V4L2_STD_A2_A;
 215         if (strcasecmp(audio_std, "A2/B") == 0)
 216                 return V4L2_STD_A2_B;
 217         if (strcasecmp(audio_std, "NICAM") == 0)
 218                 return V4L2_STD_NICAM;
 219         if (strcasecmp(audio_std, "NICAM/A") == 0)
 220                 return V4L2_STD_NICAM_A;
 221         if (strcasecmp(audio_std, "NICAM/B") == 0)
 222                 return V4L2_STD_NICAM_B;
 223
 224         return 0;
 225 }
 226
 227 static void free_firmware(struct xc2028_data *priv)
 228 {
 229         int i;
 230
 231         if (!priv->firm)
 232                 return;
 233
 234         for (i = 0; i < priv->firm_size; i++)
 235                 kfree(priv->firm[i].ptr);
 236
 237         kfree(priv->firm);
 238
 239         priv->firm = NULL;
 240         priv->firm_size = 0;
 241
 242         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 243 }
 244
 245 static int load_all_firmwares(struct dvb_frontend *fe)
 246 {
 247         struct xc2028_data    *priv = fe->tuner_priv;
 248         const struct firmware *fw   = NULL;
 249         unsigned char         *p, *endp;
 250         int                   rc = 0;
 251         int                   n, n_array;
 252         char                  name[33];
 253
 254         tuner_dbg("%s called\n", __FUNCTION__);
 255
 256         tuner_dbg("Reading firmware %s\n", priv->ctrl.fname);
 257         rc = request_firmware(&fw, priv->ctrl.fname,
 258                               &priv->i2c_props.adap->dev);
 259         if (rc < 0) {
 260                 if (rc == -ENOENT)
 261                         tuner_err("Error: firmware %s not found.\n",
 262                                    priv->ctrl.fname);
 263                 else
 264                         tuner_err("Error %d while requesting firmware %s \n",
 265                                    rc, priv->ctrl.fname);
 266
 267                 return rc;
 268         }
 269         p = fw->data;
 270         endp = p + fw->size;
 271
 272         if (fw->size < sizeof(name) - 1 + 2 + 2) {
 273                 tuner_err("Error: firmware file %s has invalid size!\n",
 274                           priv->ctrl.fname);
 275                 goto corrupt;
 276         }
 277
 278         memcpy(name, p, sizeof(name) - 1);
 279         name[sizeof(name) - 1] = 0;
 280         p += sizeof(name) - 1;
 281
 282         priv->firm_version = le16_to_cpu(*(__u16 *) p);
 283         p += 2;
 284
 285         n_array = le16_to_cpu(*(__u16 *) p);
 286         p += 2;
 287
 288         tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
 289                    n_array, priv->ctrl.fname, name,
 290                    priv->firm_version >> 8, priv->firm_version & 0xff);
 291
 292         priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL);
 293         if (priv->firm == NULL) {
 294                 tuner_err("Not enough memory to load firmware file.\n");
 295                 rc = -ENOMEM;
 296                 goto err;
 297         }
 298         priv->firm_size = n_array;
 299
 300         n = -1;
 301         while (p < endp) {
 302                 __u32 type, size;
 303                 v4l2_std_id id;
 304
 305                 n++;
 306                 if (n >= n_array) {
 307                         tuner_err("More firmware images in file than "
 308                                   "were expected!\n");
 309                         goto corrupt;
 310                 }
 311
 312                 /* Checks if there's enough bytes to read */
 313                 if (p + sizeof(type) + sizeof(id) + sizeof(size) > endp) {
 314                         tuner_err("Firmware header is incomplete!\n");
 315                         goto corrupt;
 316                 }
 317
 318                 type = le32_to_cpu(*(__u32 *) p);
 319                 p += sizeof(type);
 320
 321                 id = le64_to_cpu(*(v4l2_std_id *) p);
 322                 p += sizeof(id);
 323
 324                 size = le32_to_cpu(*(__u32 *) p);
 325                 p += sizeof(size);
 326
 327                 if ((!size) || (size + p > endp)) {
 328                         tuner_err("Firmware type ");
 329                         dump_firm_type(type);
 330                         printk("(%x), id %llx is corrupted "
 331                                "(size=%d, expected %d)\n",
 332                                type, (unsigned long long)id,
 333                                (unsigned)(endp - p), size);
 334                         goto corrupt;
 335                 }
 336
 337                 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
 338                 if (priv->firm[n].ptr == NULL) {
 339                         tuner_err("Not enough memory to load firmware file.\n");
 340                         rc = -ENOMEM;
 341                         goto err;
 342                 }
 343                 tuner_dbg("Reading firmware type ");
 344                 if (debug) {
 345                         dump_firm_type(type);
 346                         printk("(%x), id %llx, size=%d.\n",
 347                                    type, (unsigned long long)id, size);
 348                 }
 349
 350                 memcpy(priv->firm[n].ptr, p, size);
 351                 priv->firm[n].type = type;
 352                 priv->firm[n].id   = id;
 353                 priv->firm[n].size = size;
 354
 355                 p += size;
 356         }
 357
 358         if (n + 1 != priv->firm_size) {
 359                 tuner_err("Firmware file is incomplete!\n");
 360                 goto corrupt;
 361         }
 362
 363         goto done;
 364
 365 corrupt:
 366         rc = -EINVAL;
 367         tuner_err("Error: firmware file is corrupted!\n");
 368
 369 err:
 370         tuner_info("Releasing partially loaded firmware file.\n");
 371         free_firmware(priv);
 372
 373 done:
 374         release_firmware(fw);
 375         if (rc == 0)
 376                 tuner_dbg("Firmware files loaded.\n");
 377
 378         return rc;
 379 }
 380
 381 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
 382                          v4l2_std_id *id)
 383 {
 384         struct xc2028_data *priv = fe->tuner_priv;
 385         int                 i, best_i = -1, best_nr_matches = 0;
 386
 387         tuner_dbg("%s called, want type=", __FUNCTION__);
 388         if (debug) {
 389                 dump_firm_type(type);
 390                 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
 391         }
 392
 393         if (!priv->firm) {
 394                 tuner_err("Error! firmware not loaded\n");
 395                 return -EINVAL;
 396         }
 397
 398         if (((type & ~SCODE) == 0) && (*id == 0))
 399                 *id = V4L2_STD_PAL;
 400
 401         if (type & BASE)
 402                 type &= BASE_TYPES;
 403         else if (type & SCODE)
 404                 type &= SCODE_TYPES;
 405         else if (type & DTV_TYPES)
 406                 type &= DTV_TYPES;
 407         else if (type & STD_SPECIFIC_TYPES)
 408                 type &= STD_SPECIFIC_TYPES;
 409
 410         /* Seek for exact match */
 411         for (i = 0; i < priv->firm_size; i++) {
 412                 if ((type == priv->firm[i].type) && (*id == priv->firm[i].id))
 413                         goto found;
 414         }
 415
 416         /* Seek for generic video standard match */
 417         for (i = 0; i < priv->firm_size; i++) {
 418                 v4l2_std_id match_mask;
 419                 int nr_matches;
 420
 421                 if (type != priv->firm[i].type)
 422                         continue;
 423
 424                 match_mask = *id & priv->firm[i].id;
 425                 if (!match_mask)
 426                         continue;
 427
 428                 if ((*id & match_mask) == *id)
 429                         goto found; /* Supports all the requested standards */
 430
 431                 nr_matches = hweight64(match_mask);
 432                 if (nr_matches > best_nr_matches) {
 433                         best_nr_matches = nr_matches;
 434                         best_i = i;
 435                 }
 436         }
 437
 438         if (best_nr_matches > 0) {
 439                 tuner_dbg("Selecting best matching firmware (%d bits) for "
 440                           "type=", best_nr_matches);
 441                 dump_firm_type(type);
 442                 printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
 443                 i = best_i;
 444                 goto found;
 445         }
 446
 447         /*FIXME: Would make sense to seek for type "hint" match ? */
 448
 449         i = -ENOENT;
 450         goto ret;
 451
 452 found:
 453         *id = priv->firm[i].id;
 454
 455 ret:
 456         tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found");
 457         if (debug) {
 458                 dump_firm_type(type);
 459                 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
 460         }
 461         return i;
 462 }
 463
 464 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
 465                          v4l2_std_id *id)
 466 {
 467         struct xc2028_data *priv = fe->tuner_priv;
 468         int                pos, rc;
 469         unsigned char      *p, *endp, buf[priv->ctrl.max_len];
 470
 471         tuner_dbg("%s called\n", __FUNCTION__);
 472
 473         pos = seek_firmware(fe, type, id);
 474         if (pos < 0)
 475                 return pos;
 476
 477         tuner_info("Loading firmware for type=");
 478         dump_firm_type(priv->firm[pos].type);
 479         printk("(%x), id %016llx.\n", priv->firm[pos].type,
 480                (unsigned long long)*id);
 481
 482         p = priv->firm[pos].ptr;
 483         endp = p + priv->firm[pos].size;
 484
 485         while (p < endp) {
 486                 __u16 size;
 487
 488                 /* Checks if there's enough bytes to read */
 489                 if (p + sizeof(size) > endp) {
 490                         tuner_err("Firmware chunk size is wrong\n");
 491                         return -EINVAL;
 492                 }
 493
 494                 size = le16_to_cpu(*(__u16 *) p);
 495                 p += sizeof(size);
 496
 497                 if (size == 0xffff)
 498                         return 0;
 499
 500                 if (!size) {
 501                         /* Special callback command received */
 502                         rc = priv->tuner_callback(priv->video_dev,
 503                                                   XC2028_TUNER_RESET, 0);
 504                         if (rc < 0) {
 505                                 tuner_err("Error at RESET code %d\n",
 506                                            (*p) & 0x7f);
 507                                 return -EINVAL;
 508                         }
 509                         continue;
 510                 }
 511                 if (size >= 0xff00) {
 512                         switch (size) {
 513                         case 0xff00:
 514                                 rc = priv->tuner_callback(priv->video_dev,
 515                                                         XC2028_RESET_CLK, 0);
 516                                 if (rc < 0) {
 517                                         tuner_err("Error at RESET code %d\n",
 518                                                   (*p) & 0x7f);
 519                                         return -EINVAL;
 520                                 }
 521                                 break;
 522                         default:
 523                                 tuner_info("Invalid RESET code %d\n",
 524                                            size & 0x7f);
 525                                 return -EINVAL;
 526
 527                         }
 528                         continue;
 529                 }
 530
 531                 /* Checks for a sleep command */
 532                 if (size & 0x8000) {
 533                         msleep(size & 0x7fff);
 534                         continue;
 535                 }
 536
 537                 if ((size + p > endp)) {
 538                         tuner_err("missing bytes: need %d, have %d\n",
 539                                    size, (int)(endp - p));
 540                         return -EINVAL;
 541                 }
 542
 543                 buf[0] = *p;
 544                 p++;
 545                 size--;
 546
 547                 /* Sends message chunks */
 548                 while (size > 0) {
 549                         int len = (size < priv->ctrl.max_len - 1) ?
 550                                    size : priv->ctrl.max_len - 1;
 551
 552                         memcpy(buf + 1, p, len);
 553
 554                         rc = i2c_send(priv, buf, len + 1);
 555                         if (rc < 0) {
 556                                 tuner_err("%d returned from send\n", rc);
 557                                 return -EINVAL;
 558                         }
 559
 560                         p += len;
 561                         size -= len;
 562                 }
 563         }
 564         return 0;
 565 }
 566
 567 static int load_scode(struct dvb_frontend *fe, unsigned int type,
 568                          v4l2_std_id *id, int scode)
 569 {
 570         struct xc2028_data *priv = fe->tuner_priv;
 571         int                pos, rc;
 572         unsigned char      *p;
 573
 574         tuner_dbg("%s called\n", __FUNCTION__);
 575
 576         pos = seek_firmware(fe, type, id);
 577         if (pos < 0)
 578                 return pos;
 579
 580         p = priv->firm[pos].ptr;
 581
 582         /* 16 SCODE entries per file; each SCODE entry is 12 bytes and
 583          * has a 2-byte size header in the firmware format. */
 584         if (priv->firm[pos].size != 14 * 16 || scode >= 16 ||
 585             le16_to_cpu(*(__u16 *)(p + 14 * scode)) != 12)
 586                 return -EINVAL;
 587
 588         tuner_info("Loading SCODE for type=");
 589         dump_firm_type(priv->firm[pos].type);
 590         printk("(%x), id %016llx.\n", priv->firm[pos].type,
 591                (unsigned long long)*id);
 592
 593         if (priv->firm_version < 0x0202)
 594                 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
 595         else
 596                 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
 597         if (rc < 0)
 598                 return -EIO;
 599
 600         rc = i2c_send(priv, p + 14 * scode + 2, 12);
 601         if (rc < 0)
 602                 return -EIO;
 603
 604         rc = send_seq(priv, {0x00, 0x8c});
 605         if (rc < 0)
 606                 return -EIO;
 607
 608         return 0;
 609 }
 610
 611 static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode,
 612                           v4l2_std_id std, fe_bandwidth_t bandwidth)
 613 {
 614         struct xc2028_data      *priv = fe->tuner_priv;
 615         int                     rc = 0, is_retry = 0;
 616         unsigned int            type = 0;
 617         struct firmware_properties new_fw;
 618         u16                     version, hwmodel;
 619         v4l2_std_id             std0;
 620
 621         tuner_dbg("%s called\n", __FUNCTION__);
 622
 623         if (!priv->firm) {
 624                 if (!priv->ctrl.fname) {
 625                         tuner_info("xc2028/3028 firmware name not set!\n");
 626                         return -EINVAL;
 627                 }
 628
 629                 rc = load_all_firmwares(fe);
 630                 if (rc < 0)
 631                         return rc;
 632         }
 633
 634         if (priv->ctrl.type == XC2028_FIRM_MTS)
 635                 type |= MTS;
 636         if (bandwidth == BANDWIDTH_7_MHZ || bandwidth == BANDWIDTH_8_MHZ)
 637                 type |= F8MHZ;
 638
 639         /* FIXME: How to load FM and FM|INPUT1 firmwares? */
 640
 641         if (new_mode == T_DIGITAL_TV) {
 642                 if (priv->ctrl.d2633)
 643                         type |= D2633;
 644                 else
 645                         type |= D2620;
 646
 647                 switch (bandwidth) {
 648                 case BANDWIDTH_8_MHZ:
 649                         type |= DTV8;
 650                         break;
 651                 case BANDWIDTH_7_MHZ:
 652                         type |= DTV7;
 653                         break;
 654                 case BANDWIDTH_6_MHZ:
 655                         /* FIXME: Should allow select also ATSC */
 656                         type |= DTV6 | QAM;
 657                         break;
 658                 default:
 659                         tuner_err("error: bandwidth not supported.\n");
 660                 };
 661         }
 662
 663 retry:
 664         new_fw.type = type;
 665         new_fw.id = std;
 666         new_fw.std_req = std;
 667         new_fw.scode_table = SCODE | priv->ctrl.scode_table;
 668         new_fw.scode_nr = 0;
 669
 670         tuner_dbg("checking firmware, user requested type=");
 671         if (debug) {
 672                 dump_firm_type(new_fw.type);
 673                 printk("(%x), id %016llx, scode_tbl ", new_fw.type,
 674                        (unsigned long long)new_fw.std_req);
 675                 dump_firm_type(priv->ctrl.scode_table);
 676                 printk("(%x), scode_nr %d\n", priv->ctrl.scode_table,
 677                        new_fw.scode_nr);
 678         }
 679
 680         /* No need to reload base firmware if it matches */
 681         if (((BASE | new_fw.type) & BASE_TYPES) ==
 682             (priv->cur_fw.type & BASE_TYPES)) {
 683                 tuner_dbg("BASE firmware not changed.\n");
 684                 goto skip_base;
 685         }
 686
 687         /* Updating BASE - forget about all currently loaded firmware */
 688         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 689
 690         /* Reset is needed before loading firmware */
 691         rc = priv->tuner_callback(priv->video_dev,
 692                                   XC2028_TUNER_RESET, 0);
 693         if (rc < 0)
 694                 goto fail;
 695
 696         /* BASE firmwares are all std0 */
 697         std0 = 0;
 698         rc = load_firmware(fe, BASE | new_fw.type, &std0);
 699         if (rc < 0) {
 700                 tuner_err("Error %d while loading base firmware\n",
 701                           rc);
 702                 goto fail;
 703         }
 704
 705         /* Load INIT1, if needed */
 706         tuner_dbg("Load init1 firmware, if exists\n");
 707
 708         rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0);
 709         if (rc == -ENOENT)
 710                 rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ,
 711                                    &std0);
 712         if (rc < 0 && rc != -ENOENT) {
 713                 tuner_err("Error %d while loading init1 firmware\n",
 714                           rc);
 715                 goto fail;
 716         }
 717
 718 skip_base:
 719         /*
 720          * No need to reload standard specific firmware if base firmware
 721          * was not reloaded and requested video standards have not changed.
 722          */
 723         if (priv->cur_fw.type == (BASE | new_fw.type) &&
 724             priv->cur_fw.std_req == std) {
 725                 tuner_dbg("Std-specific firmware already loaded.\n");
 726                 goto skip_std_specific;
 727         }
 728
 729         /* Reloading std-specific firmware forces a SCODE update */
 730         priv->cur_fw.scode_table = 0;
 731
 732         /* Add audio hack to std mask */
 733         if (new_mode == T_ANALOG_TV)
 734                 new_fw.id |= parse_audio_std_option();
 735
 736         rc = load_firmware(fe, new_fw.type, &new_fw.id);
 737         if (rc < 0)
 738                 goto fail;
 739
 740 skip_std_specific:
 741         if (priv->cur_fw.scode_table == new_fw.scode_table &&
 742             priv->cur_fw.scode_nr == new_fw.scode_nr) {
 743                 tuner_dbg("SCODE firmware already loaded.\n");
 744                 goto check_device;
 745         }
 746
 747         /* Load SCODE firmware, if exists */
 748         tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr);
 749
 750         rc = load_scode(fe, new_fw.type | new_fw.scode_table,
 751                         &new_fw.id, new_fw.scode_nr);
 752
 753 check_device:
 754         if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
 755             xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
 756                 tuner_err("Unable to read tuner registers.\n");
 757                 goto fail;
 758         }
 759
 760         tuner_info("Device is Xceive %d version %d.%d, "
 761                    "firmware version %d.%d\n",
 762                    hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
 763                    (version & 0xf0) >> 4, version & 0xf);
 764
 765         /* Check firmware version against what we downloaded. */
 766         if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
 767                 tuner_err("Incorrect readback of firmware version.\n");
 768                 goto fail;
 769         }
 770
 771         /* Check that the tuner hardware model remains consistent over time. */
 772         if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) {
 773                 priv->hwmodel = hwmodel;
 774                 priv->hwvers  = version & 0xff00;
 775         } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel ||
 776                    priv->hwvers != (version & 0xff00)) {
 777                 tuner_err("Read invalid device hardware information - tuner "
 778                           "hung?\n");
 779                 goto fail;
 780         }
 781
 782         memcpy(&priv->cur_fw, &new_fw, sizeof(priv->cur_fw));
 783
 784         /*
 785          * By setting BASE in cur_fw.type only after successfully loading all
 786          * firmwares, we can:
 787          * 1. Identify that BASE firmware with type=0 has been loaded;
 788          * 2. Tell whether BASE firmware was just changed the next time through.
 789          */
 790         priv->cur_fw.type |= BASE;
 791
 792         return 0;
 793
 794 fail:
 795         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 796         if (!is_retry) {
 797                 msleep(50);
 798                 is_retry = 1;
 799                 tuner_dbg("Retrying firmware load\n");
 800                 goto retry;
 801         }
 802
 803         if (rc == -ENOENT)
 804                 rc = -EINVAL;
 805         return rc;
 806 }
 807
 808 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
 809 {
 810         struct xc2028_data *priv = fe->tuner_priv;
 811         u16                 frq_lock, signal = 0;
 812         int                 rc;
 813
 814         tuner_dbg("%s called\n", __FUNCTION__);
 815
 816         mutex_lock(&priv->lock);
 817
 818         /* Sync Lock Indicator */
 819         rc = xc2028_get_reg(priv, 0x0002, &frq_lock);
 820         if (rc < 0 || frq_lock == 0)
 821                 goto ret;
 822
 823         /* Frequency is locked. Return signal quality */
 824
 825         /* Get SNR of the video signal */
 826         rc = xc2028_get_reg(priv, 0x0040, &signal);
 827         if (rc < 0)
 828                 signal = -frq_lock;
 829
 830 ret:
 831         mutex_unlock(&priv->lock);
 832
 833         *strength = signal;
 834
 835         return rc;
 836 }
 837
 838 #define DIV 15625
 839
 840 static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
 841                                enum tuner_mode new_mode,
 842                                v4l2_std_id std, fe_bandwidth_t bandwidth)
 843 {
 844         struct xc2028_data *priv = fe->tuner_priv;
 845         int                rc = -EINVAL;
 846         unsigned char      buf[4];
 847         u32                div, offset = 0;
 848
 849         tuner_dbg("%s called\n", __FUNCTION__);
 850
 851         mutex_lock(&priv->lock);
 852
 853         /* HACK: It seems that specific firmware need to be reloaded
 854            when watching analog TV and freq is changed */
 855         if (new_mode != T_DIGITAL_TV)
 856                 priv->cur_fw.type = 0;
 857
 858         tuner_dbg("should set frequency %d kHz\n", freq / 1000);
 859
 860         if (check_firmware(fe, new_mode, std, bandwidth) < 0)
 861                 goto ret;
 862
 863         if (new_mode == T_DIGITAL_TV) {
 864                 offset = 2750000;
 865                 if (priv->cur_fw.type & DTV7)
 866                         offset -= 500000;
 867         }
 868
 869         div = (freq - offset + DIV / 2) / DIV;
 870
 871         /* CMD= Set frequency */
 872         if (priv->firm_version < 0x0202)
 873                 rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00});
 874         else
 875                 rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00});
 876         if (rc < 0)
 877                 goto ret;
 878
 879         rc = priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
 880         if (rc < 0)
 881                 goto ret;
 882
 883         msleep(10);
 884
 885         buf[0] = 0xff & (div >> 24);
 886         buf[1] = 0xff & (div >> 16);
 887         buf[2] = 0xff & (div >> 8);
 888         buf[3] = 0xff & (div);
 889
 890         rc = i2c_send(priv, buf, sizeof(buf));
 891         if (rc < 0)
 892                 goto ret;
 893         msleep(100);
 894
 895         priv->frequency = freq;
 896
 897         tuner_dbg("divisor= %02x %02x %02x %02x (freq=%d.%03d)\n",
 898                buf[0], buf[1], buf[2], buf[3],
 899                freq / 1000000, (freq % 1000000) / 1000);
 900
 901         rc = 0;
 902
 903 ret:
 904         mutex_unlock(&priv->lock);
 905
 906         return rc;
 907 }
 908
 909 static int xc2028_set_tv_freq(struct dvb_frontend *fe,
 910                               struct analog_parameters *p)
 911 {
 912         struct xc2028_data *priv = fe->tuner_priv;
 913
 914         tuner_dbg("%s called\n", __FUNCTION__);
 915
 916         return generic_set_tv_freq(fe, 62500l * p->frequency, T_ANALOG_TV,
 917                                    p->std, BANDWIDTH_8_MHZ);
 918                                    /* XXX Are some analog standards 6MHz? */
 919 }
 920
 921 static int xc2028_set_params(struct dvb_frontend *fe,
 922                              struct dvb_frontend_parameters *p)
 923 {
 924         struct xc2028_data *priv = fe->tuner_priv;
 925
 926         tuner_dbg("%s called\n", __FUNCTION__);
 927
 928         /* FIXME: Only OFDM implemented */
 929         if (fe->ops.info.type != FE_OFDM) {
 930                 tuner_err("DTV type not implemented.\n");
 931                 return -EINVAL;
 932         }
 933
 934         return generic_set_tv_freq(fe, p->frequency, T_DIGITAL_TV,
 935                                    0 /* NOT USED */,
 936                                    p->u.ofdm.bandwidth);
 937
 938 }
 939
 940 static int xc2028_sleep(struct dvb_frontend *fe)
 941 {
 942         struct xc2028_data *priv = fe->tuner_priv;
 943         int rc = 0;
 944
 945         tuner_dbg("%s called\n", __FUNCTION__);
 946
 947         mutex_lock(&priv->lock);
 948
 949         if (priv->firm_version < 0x0202)
 950                 rc = send_seq(priv, {0x00, 0x08, 0x00, 0x00});
 951         else
 952                 rc = send_seq(priv, {0x80, 0x08, 0x00, 0x00});
 953
 954         priv->cur_fw.type = 0;  /* need firmware reload */
 955
 956         mutex_unlock(&priv->lock);
 957
 958         return rc;
 959 }
 960
 961
 962 static int xc2028_dvb_release(struct dvb_frontend *fe)
 963 {
 964         struct xc2028_data *priv = fe->tuner_priv;
 965
 966         tuner_dbg("%s called\n", __FUNCTION__);
 967
 968         mutex_lock(&xc2028_list_mutex);
 969
 970         priv->count--;
 971
 972         if (!priv->count) {
 973                 list_del(&priv->xc2028_list);
 974
 975                 kfree(priv->ctrl.fname);
 976
 977                 free_firmware(priv);
 978                 kfree(priv);
 979                 fe->tuner_priv = NULL;
 980         }
 981
 982         mutex_unlock(&xc2028_list_mutex);
 983
 984         return 0;
 985 }
 986
 987 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 988 {
 989         struct xc2028_data *priv = fe->tuner_priv;
 990
 991         tuner_dbg("%s called\n", __FUNCTION__);
 992
 993         *frequency = priv->frequency;
 994
 995         return 0;
 996 }
 997
 998 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
 999 {
1000         struct xc2028_data *priv = fe->tuner_priv;
1001         struct xc2028_ctrl *p    = priv_cfg;
1002         int                 rc   = 0;
1003
1004         tuner_dbg("%s called\n", __FUNCTION__);
1005
1006         mutex_lock(&priv->lock);
1007
1008         kfree(priv->ctrl.fname);
1009         free_firmware(priv);
1010
1011         memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
1012         priv->ctrl.fname = NULL;
1013
1014         if (p->fname) {
1015                 priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
1016                 if (priv->ctrl.fname == NULL)
1017                         rc = -ENOMEM;
1018         }
1019
1020         if (priv->ctrl.max_len < 9)
1021                 priv->ctrl.max_len = 13;
1022
1023         mutex_unlock(&priv->lock);
1024
1025         return rc;
1026 }
1027
1028 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
1029         .info = {
1030                  .name = "Xceive XC3028",
1031                  .frequency_min = 42000000,
1032                  .frequency_max = 864000000,
1033                  .frequency_step = 50000,
1034                  },
1035
1036         .set_config        = xc2028_set_config,
1037         .set_analog_params = xc2028_set_tv_freq,
1038         .release           = xc2028_dvb_release,
1039         .get_frequency     = xc2028_get_frequency,
1040         .get_rf_strength   = xc2028_signal,
1041         .set_params        = xc2028_set_params,
1042         .sleep             = xc2028_sleep,
1043
1044 };
1045
1046 void *xc2028_attach(struct dvb_frontend *fe, struct xc2028_config *cfg)
1047 {
1048         struct xc2028_data *priv;
1049         void               *video_dev;
1050
1051         if (debug)
1052                 printk(KERN_DEBUG PREFIX ": Xcv2028/3028 init called!\n");
1053
1054         if (NULL == cfg->video_dev)
1055                 return NULL;
1056
1057         if (!fe) {
1058                 printk(KERN_ERR PREFIX ": No frontend!\n");
1059                 return NULL;
1060         }
1061
1062         video_dev = cfg->video_dev;
1063
1064         mutex_lock(&xc2028_list_mutex);
1065
1066         list_for_each_entry(priv, &xc2028_list, xc2028_list) {
1067                 if (priv->video_dev == cfg->video_dev) {
1068                         video_dev = NULL;
1069                         break;
1070                 }
1071         }
1072
1073         if (video_dev) {
1074                 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1075                 if (priv == NULL) {
1076                         mutex_unlock(&xc2028_list_mutex);
1077                         return NULL;
1078                 }
1079
1080                 priv->i2c_props.addr = cfg->i2c_addr;
1081                 priv->i2c_props.adap = cfg->i2c_adap;
1082                 priv->video_dev = video_dev;
1083                 priv->tuner_callback = cfg->callback;
1084                 priv->ctrl.max_len = 13;
1085
1086                 mutex_init(&priv->lock);
1087
1088                 list_add_tail(&priv->xc2028_list, &xc2028_list);
1089         }
1090
1091         fe->tuner_priv = priv;
1092         priv->count++;
1093
1094         memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
1095                sizeof(xc2028_dvb_tuner_ops));
1096
1097         tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
1098
1099         mutex_unlock(&xc2028_list_mutex);
1100
1101         return fe;
1102 }
1103
1104 EXPORT_SYMBOL(xc2028_attach);
1105
1106 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
1107 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
1108 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
1109 MODULE_LICENSE("GPL");