drivers/media/tuners/tuner-xc2028.c

   1 /* tuner-xc2028
   2  *
   3  * Copyright (c) 2007-2008 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 <linux/slab.h>
  19 #include <asm/unaligned.h>
  20 #include "tuner-i2c.h"
  21 #include "tuner-xc2028.h"
  22 #include "tuner-xc2028-types.h"
  23
  24 #include <linux/dvb/frontend.h>
  25 #include "dvb_frontend.h"
  26
  27 /* Max transfer size done by I2C transfer functions */
  28 #define MAX_XFER_SIZE  80
  29
  30 /* Registers (Write-only) */
  31 #define XREG_INIT         0x00
  32 #define XREG_RF_FREQ      0x02
  33 #define XREG_POWER_DOWN   0x08
  34
  35 /* Registers (Read-only) */
  36 #define XREG_FREQ_ERROR   0x01
  37 #define XREG_LOCK         0x02
  38 #define XREG_VERSION      0x04
  39 #define XREG_PRODUCT_ID   0x08
  40 #define XREG_HSYNC_FREQ   0x10
  41 #define XREG_FRAME_LINES  0x20
  42 #define XREG_SNR          0x40
  43
  44 #define XREG_ADC_ENV      0x0100
  45
  46 static int debug;
  47 module_param(debug, int, 0644);
  48 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  49
  50 static int no_poweroff;
  51 module_param(no_poweroff, int, 0644);
  52 MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n"
  53         "1 keep device energized and with tuner ready all the times.\n"
  54         "  Faster, but consumes more power and keeps the device hotter\n");
  55
  56 static char audio_std[8];
  57 module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
  58 MODULE_PARM_DESC(audio_std,
  59         "Audio standard. XC3028 audio decoder explicitly "
  60         "needs to know what audio\n"
  61         "standard is needed for some video standards with audio A2 or NICAM.\n"
  62         "The valid values are:\n"
  63         "A2\n"
  64         "A2/A\n"
  65         "A2/B\n"
  66         "NICAM\n"
  67         "NICAM/A\n"
  68         "NICAM/B\n");
  69
  70 static char firmware_name[30];
  71 module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0);
  72 MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the "
  73                                 "default firmware name\n");
  74
  75 static LIST_HEAD(hybrid_tuner_instance_list);
  76 static DEFINE_MUTEX(xc2028_list_mutex);
  77
  78 /* struct for storing firmware table */
  79 struct firmware_description {
  80         unsigned int  type;
  81         v4l2_std_id   id;
  82         __u16         int_freq;
  83         unsigned char *ptr;
  84         unsigned int  size;
  85 };
  86
  87 struct firmware_properties {
  88         unsigned int    type;
  89         v4l2_std_id     id;
  90         v4l2_std_id     std_req;
  91         __u16           int_freq;
  92         unsigned int    scode_table;
  93         int             scode_nr;
  94 };
  95
  96 enum xc2028_state {
  97         XC2028_NO_FIRMWARE = 0,
  98         XC2028_WAITING_FIRMWARE,
  99         XC2028_ACTIVE,
 100         XC2028_SLEEP,
 101         XC2028_NODEV,
 102 };
 103
 104 struct xc2028_data {
 105         struct list_head        hybrid_tuner_instance_list;
 106         struct tuner_i2c_props  i2c_props;
 107         __u32                   frequency;
 108
 109         enum xc2028_state       state;
 110         const char              *fname;
 111
 112         struct firmware_description *firm;
 113         int                     firm_size;
 114         __u16                   firm_version;
 115
 116         __u16                   hwmodel;
 117         __u16                   hwvers;
 118
 119         struct xc2028_ctrl      ctrl;
 120
 121         struct firmware_properties cur_fw;
 122
 123         struct mutex lock;
 124 };
 125
 126 #define i2c_send(priv, buf, size) ({                                    \
 127         int _rc;                                                        \
 128         _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size);         \
 129         if (size != _rc)                                                \
 130                 tuner_info("i2c output error: rc = %d (should be %d)\n",\
 131                            _rc, (int)size);                             \
 132         if (priv->ctrl.msleep)                                          \
 133                 msleep(priv->ctrl.msleep);                              \
 134         _rc;                                                            \
 135 })
 136
 137 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({                \
 138         int _rc;                                                        \
 139         _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize,   \
 140                                        ibuf, isize);                    \
 141         if (isize != _rc)                                               \
 142                 tuner_err("i2c input error: rc = %d (should be %d)\n",  \
 143                            _rc, (int)isize);                            \
 144         if (priv->ctrl.msleep)                                          \
 145                 msleep(priv->ctrl.msleep);                              \
 146         _rc;                                                            \
 147 })
 148
 149 #define send_seq(priv, data...) ({                                      \
 150         static u8 _val[] = data;                                        \
 151         int _rc;                                                        \
 152         if (sizeof(_val) !=                                             \
 153                         (_rc = tuner_i2c_xfer_send(&priv->i2c_props,    \
 154                                                 _val, sizeof(_val)))) { \
 155                 tuner_err("Error on line %d: %d\n", __LINE__, _rc);     \
 156         } else if (priv->ctrl.msleep)                                   \
 157                 msleep(priv->ctrl.msleep);                              \
 158         _rc;                                                            \
 159 })
 160
 161 static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
 162 {
 163         unsigned char buf[2];
 164         unsigned char ibuf[2];
 165
 166         tuner_dbg("%s %04x called\n", __func__, reg);
 167
 168         buf[0] = reg >> 8;
 169         buf[1] = (unsigned char) reg;
 170
 171         if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
 172                 return -EIO;
 173
 174         *val = (ibuf[1]) | (ibuf[0] << 8);
 175         return 0;
 176 }
 177
 178 #define dump_firm_type(t)       dump_firm_type_and_int_freq(t, 0)
 179 static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq)
 180 {
 181         if (type & BASE)
 182                 printk("BASE ");
 183         if (type & INIT1)
 184                 printk("INIT1 ");
 185         if (type & F8MHZ)
 186                 printk("F8MHZ ");
 187         if (type & MTS)
 188                 printk("MTS ");
 189         if (type & D2620)
 190                 printk("D2620 ");
 191         if (type & D2633)
 192                 printk("D2633 ");
 193         if (type & DTV6)
 194                 printk("DTV6 ");
 195         if (type & QAM)
 196                 printk("QAM ");
 197         if (type & DTV7)
 198                 printk("DTV7 ");
 199         if (type & DTV78)
 200                 printk("DTV78 ");
 201         if (type & DTV8)
 202                 printk("DTV8 ");
 203         if (type & FM)
 204                 printk("FM ");
 205         if (type & INPUT1)
 206                 printk("INPUT1 ");
 207         if (type & LCD)
 208                 printk("LCD ");
 209         if (type & NOGD)
 210                 printk("NOGD ");
 211         if (type & MONO)
 212                 printk("MONO ");
 213         if (type & ATSC)
 214                 printk("ATSC ");
 215         if (type & IF)
 216                 printk("IF ");
 217         if (type & LG60)
 218                 printk("LG60 ");
 219         if (type & ATI638)
 220                 printk("ATI638 ");
 221         if (type & OREN538)
 222                 printk("OREN538 ");
 223         if (type & OREN36)
 224                 printk("OREN36 ");
 225         if (type & TOYOTA388)
 226                 printk("TOYOTA388 ");
 227         if (type & TOYOTA794)
 228                 printk("TOYOTA794 ");
 229         if (type & DIBCOM52)
 230                 printk("DIBCOM52 ");
 231         if (type & ZARLINK456)
 232                 printk("ZARLINK456 ");
 233         if (type & CHINA)
 234                 printk("CHINA ");
 235         if (type & F6MHZ)
 236                 printk("F6MHZ ");
 237         if (type & INPUT2)
 238                 printk("INPUT2 ");
 239         if (type & SCODE)
 240                 printk("SCODE ");
 241         if (type & HAS_IF)
 242                 printk("HAS_IF_%d ", int_freq);
 243 }
 244
 245 static  v4l2_std_id parse_audio_std_option(void)
 246 {
 247         if (strcasecmp(audio_std, "A2") == 0)
 248                 return V4L2_STD_A2;
 249         if (strcasecmp(audio_std, "A2/A") == 0)
 250                 return V4L2_STD_A2_A;
 251         if (strcasecmp(audio_std, "A2/B") == 0)
 252                 return V4L2_STD_A2_B;
 253         if (strcasecmp(audio_std, "NICAM") == 0)
 254                 return V4L2_STD_NICAM;
 255         if (strcasecmp(audio_std, "NICAM/A") == 0)
 256                 return V4L2_STD_NICAM_A;
 257         if (strcasecmp(audio_std, "NICAM/B") == 0)
 258                 return V4L2_STD_NICAM_B;
 259
 260         return 0;
 261 }
 262
 263 static int check_device_status(struct xc2028_data *priv)
 264 {
 265         switch (priv->state) {
 266         case XC2028_NO_FIRMWARE:
 267         case XC2028_WAITING_FIRMWARE:
 268                 return -EAGAIN;
 269         case XC2028_ACTIVE:
 270                 return 1;
 271         case XC2028_SLEEP:
 272                 return 0;
 273         case XC2028_NODEV:
 274                 return -ENODEV;
 275         }
 276         return 0;
 277 }
 278
 279 static void free_firmware(struct xc2028_data *priv)
 280 {
 281         int i;
 282         tuner_dbg("%s called\n", __func__);
 283
 284         /* free allocated f/w string */
 285         if (priv->fname != firmware_name)
 286                 kfree(priv->fname);
 287         priv->fname = NULL;
 288
 289         priv->state = XC2028_NO_FIRMWARE;
 290         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 291
 292         if (!priv->firm)
 293                 return;
 294
 295         for (i = 0; i < priv->firm_size; i++)
 296                 kfree(priv->firm[i].ptr);
 297
 298         kfree(priv->firm);
 299
 300         priv->firm = NULL;
 301         priv->firm_size = 0;
 302 }
 303
 304 static int load_all_firmwares(struct dvb_frontend *fe,
 305                               const struct firmware *fw)
 306 {
 307         struct xc2028_data    *priv = fe->tuner_priv;
 308         const unsigned char   *p, *endp;
 309         int                   rc = 0;
 310         int                   n, n_array;
 311         char                  name[33];
 312
 313         tuner_dbg("%s called\n", __func__);
 314
 315         p = fw->data;
 316         endp = p + fw->size;
 317
 318         if (fw->size < sizeof(name) - 1 + 2 + 2) {
 319                 tuner_err("Error: firmware file %s has invalid size!\n",
 320                           priv->fname);
 321                 goto corrupt;
 322         }
 323
 324         memcpy(name, p, sizeof(name) - 1);
 325         name[sizeof(name) - 1] = 0;
 326         p += sizeof(name) - 1;
 327
 328         priv->firm_version = get_unaligned_le16(p);
 329         p += 2;
 330
 331         n_array = get_unaligned_le16(p);
 332         p += 2;
 333
 334         tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
 335                    n_array, priv->fname, name,
 336                    priv->firm_version >> 8, priv->firm_version & 0xff);
 337
 338         priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL);
 339         if (priv->firm == NULL) {
 340                 tuner_err("Not enough memory to load firmware file.\n");
 341                 rc = -ENOMEM;
 342                 goto err;
 343         }
 344         priv->firm_size = n_array;
 345
 346         n = -1;
 347         while (p < endp) {
 348                 __u32 type, size;
 349                 v4l2_std_id id;
 350                 __u16 int_freq = 0;
 351
 352                 n++;
 353                 if (n >= n_array) {
 354                         tuner_err("More firmware images in file than "
 355                                   "were expected!\n");
 356                         goto corrupt;
 357                 }
 358
 359                 /* Checks if there's enough bytes to read */
 360                 if (endp - p < sizeof(type) + sizeof(id) + sizeof(size))
 361                         goto header;
 362
 363                 type = get_unaligned_le32(p);
 364                 p += sizeof(type);
 365
 366                 id = get_unaligned_le64(p);
 367                 p += sizeof(id);
 368
 369                 if (type & HAS_IF) {
 370                         int_freq = get_unaligned_le16(p);
 371                         p += sizeof(int_freq);
 372                         if (endp - p < sizeof(size))
 373                                 goto header;
 374                 }
 375
 376                 size = get_unaligned_le32(p);
 377                 p += sizeof(size);
 378
 379                 if (!size || size > endp - p) {
 380                         tuner_err("Firmware type ");
 381                         dump_firm_type(type);
 382                         printk("(%x), id %llx is corrupted "
 383                                "(size=%d, expected %d)\n",
 384                                type, (unsigned long long)id,
 385                                (unsigned)(endp - p), size);
 386                         goto corrupt;
 387                 }
 388
 389                 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
 390                 if (priv->firm[n].ptr == NULL) {
 391                         tuner_err("Not enough memory to load firmware file.\n");
 392                         rc = -ENOMEM;
 393                         goto err;
 394                 }
 395                 tuner_dbg("Reading firmware type ");
 396                 if (debug) {
 397                         dump_firm_type_and_int_freq(type, int_freq);
 398                         printk("(%x), id %llx, size=%d.\n",
 399                                type, (unsigned long long)id, size);
 400                 }
 401
 402                 memcpy(priv->firm[n].ptr, p, size);
 403                 priv->firm[n].type = type;
 404                 priv->firm[n].id   = id;
 405                 priv->firm[n].size = size;
 406                 priv->firm[n].int_freq = int_freq;
 407
 408                 p += size;
 409         }
 410
 411         if (n + 1 != priv->firm_size) {
 412                 tuner_err("Firmware file is incomplete!\n");
 413                 goto corrupt;
 414         }
 415
 416         goto done;
 417
 418 header:
 419         tuner_err("Firmware header is incomplete!\n");
 420 corrupt:
 421         rc = -EINVAL;
 422         tuner_err("Error: firmware file is corrupted!\n");
 423
 424 err:
 425         tuner_info("Releasing partially loaded firmware file.\n");
 426         free_firmware(priv);
 427
 428 done:
 429         if (rc == 0)
 430                 tuner_dbg("Firmware files loaded.\n");
 431         else
 432                 priv->state = XC2028_NODEV;
 433
 434         return rc;
 435 }
 436
 437 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
 438                          v4l2_std_id *id)
 439 {
 440         struct xc2028_data *priv = fe->tuner_priv;
 441         int                 i, best_i = -1, best_nr_matches = 0;
 442         unsigned int        type_mask = 0;
 443
 444         tuner_dbg("%s called, want type=", __func__);
 445         if (debug) {
 446                 dump_firm_type(type);
 447                 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
 448         }
 449
 450         if (!priv->firm) {
 451                 tuner_err("Error! firmware not loaded\n");
 452                 return -EINVAL;
 453         }
 454
 455         if (((type & ~SCODE) == 0) && (*id == 0))
 456                 *id = V4L2_STD_PAL;
 457
 458         if (type & BASE)
 459                 type_mask = BASE_TYPES;
 460         else if (type & SCODE) {
 461                 type &= SCODE_TYPES;
 462                 type_mask = SCODE_TYPES & ~HAS_IF;
 463         } else if (type & DTV_TYPES)
 464                 type_mask = DTV_TYPES;
 465         else if (type & STD_SPECIFIC_TYPES)
 466                 type_mask = STD_SPECIFIC_TYPES;
 467
 468         type &= type_mask;
 469
 470         if (!(type & SCODE))
 471                 type_mask = ~0;
 472
 473         /* Seek for exact match */
 474         for (i = 0; i < priv->firm_size; i++) {
 475                 if ((type == (priv->firm[i].type & type_mask)) &&
 476                     (*id == priv->firm[i].id))
 477                         goto found;
 478         }
 479
 480         /* Seek for generic video standard match */
 481         for (i = 0; i < priv->firm_size; i++) {
 482                 v4l2_std_id match_mask;
 483                 int nr_matches;
 484
 485                 if (type != (priv->firm[i].type & type_mask))
 486                         continue;
 487
 488                 match_mask = *id & priv->firm[i].id;
 489                 if (!match_mask)
 490                         continue;
 491
 492                 if ((*id & match_mask) == *id)
 493                         goto found; /* Supports all the requested standards */
 494
 495                 nr_matches = hweight64(match_mask);
 496                 if (nr_matches > best_nr_matches) {
 497                         best_nr_matches = nr_matches;
 498                         best_i = i;
 499                 }
 500         }
 501
 502         if (best_nr_matches > 0) {
 503                 tuner_dbg("Selecting best matching firmware (%d bits) for "
 504                           "type=", best_nr_matches);
 505                 dump_firm_type(type);
 506                 printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
 507                 i = best_i;
 508                 goto found;
 509         }
 510
 511         /*FIXME: Would make sense to seek for type "hint" match ? */
 512
 513         i = -ENOENT;
 514         goto ret;
 515
 516 found:
 517         *id = priv->firm[i].id;
 518
 519 ret:
 520         tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found");
 521         if (debug) {
 522                 dump_firm_type(type);
 523                 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
 524         }
 525         return i;
 526 }
 527
 528 static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg)
 529 {
 530         struct xc2028_data *priv = fe->tuner_priv;
 531
 532         /* analog side (tuner-core) uses i2c_adap->algo_data.
 533          * digital side is not guaranteed to have algo_data defined.
 534          *
 535          * digital side will always have fe->dvb defined.
 536          * analog side (tuner-core) doesn't (yet) define fe->dvb.
 537          */
 538
 539         return (!fe->callback) ? -EINVAL :
 540                 fe->callback(((fe->dvb) && (fe->dvb->priv)) ?
 541                                 fe->dvb->priv : priv->i2c_props.adap->algo_data,
 542                              DVB_FRONTEND_COMPONENT_TUNER, cmd, arg);
 543 }
 544
 545 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
 546                          v4l2_std_id *id)
 547 {
 548         struct xc2028_data *priv = fe->tuner_priv;
 549         int                pos, rc;
 550         unsigned char      *p, *endp, buf[MAX_XFER_SIZE];
 551
 552         if (priv->ctrl.max_len > sizeof(buf))
 553                 priv->ctrl.max_len = sizeof(buf);
 554
 555         tuner_dbg("%s called\n", __func__);
 556
 557         pos = seek_firmware(fe, type, id);
 558         if (pos < 0)
 559                 return pos;
 560
 561         tuner_info("Loading firmware for type=");
 562         dump_firm_type(priv->firm[pos].type);
 563         printk("(%x), id %016llx.\n", priv->firm[pos].type,
 564                (unsigned long long)*id);
 565
 566         p = priv->firm[pos].ptr;
 567         endp = p + priv->firm[pos].size;
 568
 569         while (p < endp) {
 570                 __u16 size;
 571
 572                 /* Checks if there's enough bytes to read */
 573                 if (p + sizeof(size) > endp) {
 574                         tuner_err("Firmware chunk size is wrong\n");
 575                         return -EINVAL;
 576                 }
 577
 578                 size = le16_to_cpu(*(__le16 *) p);
 579                 p += sizeof(size);
 580
 581                 if (size == 0xffff)
 582                         return 0;
 583
 584                 if (!size) {
 585                         /* Special callback command received */
 586                         rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
 587                         if (rc < 0) {
 588                                 tuner_err("Error at RESET code %d\n",
 589                                            (*p) & 0x7f);
 590                                 return -EINVAL;
 591                         }
 592                         continue;
 593                 }
 594                 if (size >= 0xff00) {
 595                         switch (size) {
 596                         case 0xff00:
 597                                 rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0);
 598                                 if (rc < 0) {
 599                                         tuner_err("Error at RESET code %d\n",
 600                                                   (*p) & 0x7f);
 601                                         return -EINVAL;
 602                                 }
 603                                 break;
 604                         default:
 605                                 tuner_info("Invalid RESET code %d\n",
 606                                            size & 0x7f);
 607                                 return -EINVAL;
 608
 609                         }
 610                         continue;
 611                 }
 612
 613                 /* Checks for a sleep command */
 614                 if (size & 0x8000) {
 615                         msleep(size & 0x7fff);
 616                         continue;
 617                 }
 618
 619                 if ((size + p > endp)) {
 620                         tuner_err("missing bytes: need %d, have %d\n",
 621                                    size, (int)(endp - p));
 622                         return -EINVAL;
 623                 }
 624
 625                 buf[0] = *p;
 626                 p++;
 627                 size--;
 628
 629                 /* Sends message chunks */
 630                 while (size > 0) {
 631                         int len = (size < priv->ctrl.max_len - 1) ?
 632                                    size : priv->ctrl.max_len - 1;
 633
 634                         memcpy(buf + 1, p, len);
 635
 636                         rc = i2c_send(priv, buf, len + 1);
 637                         if (rc < 0) {
 638                                 tuner_err("%d returned from send\n", rc);
 639                                 return -EINVAL;
 640                         }
 641
 642                         p += len;
 643                         size -= len;
 644                 }
 645
 646                 /* silently fail if the frontend doesn't support I2C flush */
 647                 rc = do_tuner_callback(fe, XC2028_I2C_FLUSH, 0);
 648                 if ((rc < 0) && (rc != -EINVAL)) {
 649                         tuner_err("error executing flush: %d\n", rc);
 650                         return rc;
 651                 }
 652         }
 653         return 0;
 654 }
 655
 656 static int load_scode(struct dvb_frontend *fe, unsigned int type,
 657                          v4l2_std_id *id, __u16 int_freq, int scode)
 658 {
 659         struct xc2028_data *priv = fe->tuner_priv;
 660         int                pos, rc;
 661         unsigned char      *p;
 662
 663         tuner_dbg("%s called\n", __func__);
 664
 665         if (!int_freq) {
 666                 pos = seek_firmware(fe, type, id);
 667                 if (pos < 0)
 668                         return pos;
 669         } else {
 670                 for (pos = 0; pos < priv->firm_size; pos++) {
 671                         if ((priv->firm[pos].int_freq == int_freq) &&
 672                             (priv->firm[pos].type & HAS_IF))
 673                                 break;
 674                 }
 675                 if (pos == priv->firm_size)
 676                         return -ENOENT;
 677         }
 678
 679         p = priv->firm[pos].ptr;
 680
 681         if (priv->firm[pos].type & HAS_IF) {
 682                 if (priv->firm[pos].size != 12 * 16 || scode >= 16)
 683                         return -EINVAL;
 684                 p += 12 * scode;
 685         } else {
 686                 /* 16 SCODE entries per file; each SCODE entry is 12 bytes and
 687                  * has a 2-byte size header in the firmware format. */
 688                 if (priv->firm[pos].size != 14 * 16 || scode >= 16 ||
 689                     le16_to_cpu(*(__le16 *)(p + 14 * scode)) != 12)
 690                         return -EINVAL;
 691                 p += 14 * scode + 2;
 692         }
 693
 694         tuner_info("Loading SCODE for type=");
 695         dump_firm_type_and_int_freq(priv->firm[pos].type,
 696                                     priv->firm[pos].int_freq);
 697         printk("(%x), id %016llx.\n", priv->firm[pos].type,
 698                (unsigned long long)*id);
 699
 700         if (priv->firm_version < 0x0202)
 701                 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
 702         else
 703                 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
 704         if (rc < 0)
 705                 return -EIO;
 706
 707         rc = i2c_send(priv, p, 12);
 708         if (rc < 0)
 709                 return -EIO;
 710
 711         rc = send_seq(priv, {0x00, 0x8c});
 712         if (rc < 0)
 713                 return -EIO;
 714
 715         return 0;
 716 }
 717
 718 static int xc2028_sleep(struct dvb_frontend *fe);
 719
 720 static int check_firmware(struct dvb_frontend *fe, unsigned int type,
 721                           v4l2_std_id std, __u16 int_freq)
 722 {
 723         struct xc2028_data         *priv = fe->tuner_priv;
 724         struct firmware_properties new_fw;
 725         int                        rc, retry_count = 0;
 726         u16                        version, hwmodel;
 727         v4l2_std_id                std0;
 728
 729         tuner_dbg("%s called\n", __func__);
 730
 731         rc = check_device_status(priv);
 732         if (rc < 0)
 733                 return rc;
 734
 735         if (priv->ctrl.mts && !(type & FM))
 736                 type |= MTS;
 737
 738 retry:
 739         new_fw.type = type;
 740         new_fw.id = std;
 741         new_fw.std_req = std;
 742         new_fw.scode_table = SCODE | priv->ctrl.scode_table;
 743         new_fw.scode_nr = 0;
 744         new_fw.int_freq = int_freq;
 745
 746         tuner_dbg("checking firmware, user requested type=");
 747         if (debug) {
 748                 dump_firm_type(new_fw.type);
 749                 printk("(%x), id %016llx, ", new_fw.type,
 750                        (unsigned long long)new_fw.std_req);
 751                 if (!int_freq) {
 752                         printk("scode_tbl ");
 753                         dump_firm_type(priv->ctrl.scode_table);
 754                         printk("(%x), ", priv->ctrl.scode_table);
 755                 } else
 756                         printk("int_freq %d, ", new_fw.int_freq);
 757                 printk("scode_nr %d\n", new_fw.scode_nr);
 758         }
 759
 760         /*
 761          * No need to reload base firmware if it matches and if the tuner
 762          * is not at sleep mode
 763          */
 764         if ((priv->state == XC2028_ACTIVE) &&
 765             (((BASE | new_fw.type) & BASE_TYPES) ==
 766             (priv->cur_fw.type & BASE_TYPES))) {
 767                 tuner_dbg("BASE firmware not changed.\n");
 768                 goto skip_base;
 769         }
 770
 771         /* Updating BASE - forget about all currently loaded firmware */
 772         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 773
 774         /* Reset is needed before loading firmware */
 775         rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
 776         if (rc < 0)
 777                 goto fail;
 778
 779         /* BASE firmwares are all std0 */
 780         std0 = 0;
 781         rc = load_firmware(fe, BASE | new_fw.type, &std0);
 782         if (rc < 0) {
 783                 tuner_err("Error %d while loading base firmware\n",
 784                           rc);
 785                 goto fail;
 786         }
 787
 788         /* Load INIT1, if needed */
 789         tuner_dbg("Load init1 firmware, if exists\n");
 790
 791         rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0);
 792         if (rc == -ENOENT)
 793                 rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ,
 794                                    &std0);
 795         if (rc < 0 && rc != -ENOENT) {
 796                 tuner_err("Error %d while loading init1 firmware\n",
 797                           rc);
 798                 goto fail;
 799         }
 800
 801 skip_base:
 802         /*
 803          * No need to reload standard specific firmware if base firmware
 804          * was not reloaded and requested video standards have not changed.
 805          */
 806         if (priv->cur_fw.type == (BASE | new_fw.type) &&
 807             priv->cur_fw.std_req == std) {
 808                 tuner_dbg("Std-specific firmware already loaded.\n");
 809                 goto skip_std_specific;
 810         }
 811
 812         /* Reloading std-specific firmware forces a SCODE update */
 813         priv->cur_fw.scode_table = 0;
 814
 815         rc = load_firmware(fe, new_fw.type, &new_fw.id);
 816         if (rc == -ENOENT)
 817                 rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id);
 818
 819         if (rc < 0)
 820                 goto fail;
 821
 822 skip_std_specific:
 823         if (priv->cur_fw.scode_table == new_fw.scode_table &&
 824             priv->cur_fw.scode_nr == new_fw.scode_nr) {
 825                 tuner_dbg("SCODE firmware already loaded.\n");
 826                 goto check_device;
 827         }
 828
 829         if (new_fw.type & FM)
 830                 goto check_device;
 831
 832         /* Load SCODE firmware, if exists */
 833         tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr);
 834
 835         rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id,
 836                         new_fw.int_freq, new_fw.scode_nr);
 837
 838 check_device:
 839         if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
 840             xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
 841                 tuner_err("Unable to read tuner registers.\n");
 842                 goto fail;
 843         }
 844
 845         tuner_dbg("Device is Xceive %d version %d.%d, "
 846                   "firmware version %d.%d\n",
 847                   hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
 848                   (version & 0xf0) >> 4, version & 0xf);
 849
 850
 851         if (priv->ctrl.read_not_reliable)
 852                 goto read_not_reliable;
 853
 854         /* Check firmware version against what we downloaded. */
 855         if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
 856                 if (!priv->ctrl.read_not_reliable) {
 857                         tuner_err("Incorrect readback of firmware version.\n");
 858                         goto fail;
 859                 } else {
 860                         tuner_err("Returned an incorrect version. However, "
 861                                   "read is not reliable enough. Ignoring it.\n");
 862                         hwmodel = 3028;
 863                 }
 864         }
 865
 866         /* Check that the tuner hardware model remains consistent over time. */
 867         if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) {
 868                 priv->hwmodel = hwmodel;
 869                 priv->hwvers  = version & 0xff00;
 870         } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel ||
 871                    priv->hwvers != (version & 0xff00)) {
 872                 tuner_err("Read invalid device hardware information - tuner "
 873                           "hung?\n");
 874                 goto fail;
 875         }
 876
 877 read_not_reliable:
 878         priv->cur_fw = new_fw;
 879
 880         /*
 881          * By setting BASE in cur_fw.type only after successfully loading all
 882          * firmwares, we can:
 883          * 1. Identify that BASE firmware with type=0 has been loaded;
 884          * 2. Tell whether BASE firmware was just changed the next time through.
 885          */
 886         priv->cur_fw.type |= BASE;
 887         priv->state = XC2028_ACTIVE;
 888
 889         return 0;
 890
 891 fail:
 892         free_firmware(priv);
 893
 894         if (retry_count < 8) {
 895                 msleep(50);
 896                 retry_count++;
 897                 tuner_dbg("Retrying firmware load\n");
 898                 goto retry;
 899         }
 900
 901         /* Firmware didn't load. Put the device to sleep */
 902         xc2028_sleep(fe);
 903
 904         if (rc == -ENOENT)
 905                 rc = -EINVAL;
 906         return rc;
 907 }
 908
 909 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
 910 {
 911         struct xc2028_data *priv = fe->tuner_priv;
 912         u16                 frq_lock, signal = 0;
 913         int                 rc, i;
 914
 915         tuner_dbg("%s called\n", __func__);
 916
 917         rc = check_device_status(priv);
 918         if (rc < 0)
 919                 return rc;
 920
 921         /* If the device is sleeping, no channel is tuned */
 922         if (!rc) {
 923                 *strength = 0;
 924                 return 0;
 925         }
 926
 927         mutex_lock(&priv->lock);
 928
 929         /* Sync Lock Indicator */
 930         for (i = 0; i < 3; i++) {
 931                 rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
 932                 if (rc < 0)
 933                         goto ret;
 934
 935                 if (frq_lock)
 936                         break;
 937                 msleep(6);
 938         }
 939
 940         /* Frequency didn't lock */
 941         if (frq_lock == 2)
 942                 goto ret;
 943
 944         /* Get SNR of the video signal */
 945         rc = xc2028_get_reg(priv, XREG_SNR, &signal);
 946         if (rc < 0)
 947                 goto ret;
 948
 949         /* Signal level is 3 bits only */
 950
 951         signal = ((1 << 12) - 1) | ((signal & 0x07) << 12);
 952
 953 ret:
 954         mutex_unlock(&priv->lock);
 955
 956         *strength = signal;
 957
 958         tuner_dbg("signal strength is %d\n", signal);
 959
 960         return rc;
 961 }
 962
 963 static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc)
 964 {
 965         struct xc2028_data *priv = fe->tuner_priv;
 966         int i, rc;
 967         u16 frq_lock = 0;
 968         s16 afc_reg = 0;
 969
 970         rc = check_device_status(priv);
 971         if (rc < 0)
 972                 return rc;
 973
 974         /* If the device is sleeping, no channel is tuned */
 975         if (!rc) {
 976                 *afc = 0;
 977                 return 0;
 978         }
 979
 980         mutex_lock(&priv->lock);
 981
 982         /* Sync Lock Indicator */
 983         for (i = 0; i < 3; i++) {
 984                 rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
 985                 if (rc < 0)
 986                         goto ret;
 987
 988                 if (frq_lock)
 989                         break;
 990                 msleep(6);
 991         }
 992
 993         /* Frequency didn't lock */
 994         if (frq_lock == 2)
 995                 goto ret;
 996
 997         /* Get AFC */
 998         rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg);
 999         if (rc < 0)
1000                 goto ret;
1001
1002         *afc = afc_reg * 15625; /* Hz */
1003
1004         tuner_dbg("AFC is %d Hz\n", *afc);
1005
1006 ret:
1007         mutex_unlock(&priv->lock);
1008
1009         return rc;
1010 }
1011
1012 #define DIV 15625
1013
1014 static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
1015                             enum v4l2_tuner_type new_type,
1016                             unsigned int type,
1017                             v4l2_std_id std,
1018                             u16 int_freq)
1019 {
1020         struct xc2028_data *priv = fe->tuner_priv;
1021         int                rc = -EINVAL;
1022         unsigned char      buf[4];
1023         u32                div, offset = 0;
1024
1025         tuner_dbg("%s called\n", __func__);
1026
1027         mutex_lock(&priv->lock);
1028
1029         tuner_dbg("should set frequency %d kHz\n", freq / 1000);
1030
1031         if (check_firmware(fe, type, std, int_freq) < 0)
1032                 goto ret;
1033
1034         /* On some cases xc2028 can disable video output, if
1035          * very weak signals are received. By sending a soft
1036          * reset, this is re-enabled. So, it is better to always
1037          * send a soft reset before changing channels, to be sure
1038          * that xc2028 will be in a safe state.
1039          * Maybe this might also be needed for DTV.
1040          */
1041         switch (new_type) {
1042         case V4L2_TUNER_ANALOG_TV:
1043                 rc = send_seq(priv, {0x00, 0x00});
1044
1045                 /* Analog mode requires offset = 0 */
1046                 break;
1047         case V4L2_TUNER_RADIO:
1048                 /* Radio mode requires offset = 0 */
1049                 break;
1050         case V4L2_TUNER_DIGITAL_TV:
1051                 /*
1052                  * Digital modes require an offset to adjust to the
1053                  * proper frequency. The offset depends on what
1054                  * firmware version is used.
1055                  */
1056
1057                 /*
1058                  * Adjust to the center frequency. This is calculated by the
1059                  * formula: offset = 1.25MHz - BW/2
1060                  * For DTV 7/8, the firmware uses BW = 8000, so it needs a
1061                  * further adjustment to get the frequency center on VHF
1062                  */
1063
1064                 /*
1065                  * The firmware DTV78 used to work fine in UHF band (8 MHz
1066                  * bandwidth) but not at all in VHF band (7 MHz bandwidth).
1067                  * The real problem was connected to the formula used to
1068                  * calculate the center frequency offset in VHF band.
1069                  * In fact, removing the 500KHz adjustment fixed the problem.
1070                  * This is coherent to what was implemented for the DTV7
1071                  * firmware.
1072                  * In the end, now the center frequency is the same for all 3
1073                  * firmwares (DTV7, DTV8, DTV78) and doesn't depend on channel
1074                  * bandwidth.
1075                  */
1076
1077                 if (priv->cur_fw.type & DTV6)
1078                         offset = 1750000;
1079                 else    /* DTV7 or DTV8 or DTV78 */
1080                         offset = 2750000;
1081
1082                 /*
1083                  * xc3028 additional "magic"
1084                  * Depending on the firmware version, it needs some adjustments
1085                  * to properly centralize the frequency. This seems to be
1086                  * needed to compensate the SCODE table adjustments made by
1087                  * newer firmwares
1088                  */
1089
1090                 /*
1091                  * The proper adjustment would be to do it at s-code table.
1092                  * However, this didn't work, as reported by
1093                  * Robert Lowery <rglowery@exemail.com.au>
1094                  */
1095
1096 #if 0
1097                 /*
1098                  * Still need tests for XC3028L (firmware 3.2 or upper)
1099                  * So, for now, let's just comment the per-firmware
1100                  * version of this change. Reports with xc3028l working
1101                  * with and without the lines bellow are welcome
1102                  */
1103
1104                 if (priv->firm_version < 0x0302) {
1105                         if (priv->cur_fw.type & DTV7)
1106                                 offset += 500000;
1107                 } else {
1108                         if (priv->cur_fw.type & DTV7)
1109                                 offset -= 300000;
1110                         else if (type != ATSC) /* DVB @6MHz, DTV 8 and DTV 7/8 */
1111                                 offset += 200000;
1112                 }
1113 #endif
1114                 break;
1115         default:
1116                 tuner_err("Unsupported tuner type %d.\n", new_type);
1117                 break;
1118         }
1119
1120         div = (freq - offset + DIV / 2) / DIV;
1121
1122         /* CMD= Set frequency */
1123         if (priv->firm_version < 0x0202)
1124                 rc = send_seq(priv, {0x00, XREG_RF_FREQ, 0x00, 0x00});
1125         else
1126                 rc = send_seq(priv, {0x80, XREG_RF_FREQ, 0x00, 0x00});
1127         if (rc < 0)
1128                 goto ret;
1129
1130         /* Return code shouldn't be checked.
1131            The reset CLK is needed only with tm6000.
1132            Driver should work fine even if this fails.
1133          */
1134         if (priv->ctrl.msleep)
1135                 msleep(priv->ctrl.msleep);
1136         do_tuner_callback(fe, XC2028_RESET_CLK, 1);
1137
1138         msleep(10);
1139
1140         buf[0] = 0xff & (div >> 24);
1141         buf[1] = 0xff & (div >> 16);
1142         buf[2] = 0xff & (div >> 8);
1143         buf[3] = 0xff & (div);
1144
1145         rc = i2c_send(priv, buf, sizeof(buf));
1146         if (rc < 0)
1147                 goto ret;
1148         msleep(100);
1149
1150         priv->frequency = freq;
1151
1152         tuner_dbg("divisor= %*ph (freq=%d.%03d)\n", 4, buf,
1153                freq / 1000000, (freq % 1000000) / 1000);
1154
1155         rc = 0;
1156
1157 ret:
1158         mutex_unlock(&priv->lock);
1159
1160         return rc;
1161 }
1162
1163 static int xc2028_set_analog_freq(struct dvb_frontend *fe,
1164                               struct analog_parameters *p)
1165 {
1166         struct xc2028_data *priv = fe->tuner_priv;
1167         unsigned int       type=0;
1168
1169         tuner_dbg("%s called\n", __func__);
1170
1171         if (p->mode == V4L2_TUNER_RADIO) {
1172                 type |= FM;
1173                 if (priv->ctrl.input1)
1174                         type |= INPUT1;
1175                 return generic_set_freq(fe, (625l * p->frequency) / 10,
1176                                 V4L2_TUNER_RADIO, type, 0, 0);
1177         }
1178
1179         /* if std is not defined, choose one */
1180         if (!p->std)
1181                 p->std = V4L2_STD_MN;
1182
1183         /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
1184         if (!(p->std & V4L2_STD_MN))
1185                 type |= F8MHZ;
1186
1187         /* Add audio hack to std mask */
1188         p->std |= parse_audio_std_option();
1189
1190         return generic_set_freq(fe, 62500l * p->frequency,
1191                                 V4L2_TUNER_ANALOG_TV, type, p->std, 0);
1192 }
1193
1194 static int xc2028_set_params(struct dvb_frontend *fe)
1195 {
1196         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1197         u32 delsys = c->delivery_system;
1198         u32 bw = c->bandwidth_hz;
1199         struct xc2028_data *priv = fe->tuner_priv;
1200         int rc;
1201         unsigned int       type = 0;
1202         u16                demod = 0;
1203
1204         tuner_dbg("%s called\n", __func__);
1205
1206         rc = check_device_status(priv);
1207         if (rc < 0)
1208                 return rc;
1209
1210         switch (delsys) {
1211         case SYS_DVBT:
1212         case SYS_DVBT2:
1213                 /*
1214                  * The only countries with 6MHz seem to be Taiwan/Uruguay.
1215                  * Both seem to require QAM firmware for OFDM decoding
1216                  * Tested in Taiwan by Terry Wu <terrywu2009@gmail.com>
1217                  */
1218                 if (bw <= 6000000)
1219                         type |= QAM;
1220
1221                 switch (priv->ctrl.type) {
1222                 case XC2028_D2633:
1223                         type |= D2633;
1224                         break;
1225                 case XC2028_D2620:
1226                         type |= D2620;
1227                         break;
1228                 case XC2028_AUTO:
1229                 default:
1230                         /* Zarlink seems to need D2633 */
1231                         if (priv->ctrl.demod == XC3028_FE_ZARLINK456)
1232                                 type |= D2633;
1233                         else
1234                                 type |= D2620;
1235                 }
1236                 break;
1237         case SYS_ATSC:
1238                 /* The only ATSC firmware (at least on v2.7) is D2633 */
1239                 type |= ATSC | D2633;
1240                 break;
1241         /* DVB-S and pure QAM (FE_QAM) are not supported */
1242         default:
1243                 return -EINVAL;
1244         }
1245
1246         if (bw <= 6000000) {
1247                 type |= DTV6;
1248                 priv->ctrl.vhfbw7 = 0;
1249                 priv->ctrl.uhfbw8 = 0;
1250         } else if (bw <= 7000000) {
1251                 if (c->frequency < 470000000)
1252                         priv->ctrl.vhfbw7 = 1;
1253                 else
1254                         priv->ctrl.uhfbw8 = 0;
1255                 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
1256                 type |= F8MHZ;
1257         } else {
1258                 if (c->frequency < 470000000)
1259                         priv->ctrl.vhfbw7 = 0;
1260                 else
1261                         priv->ctrl.uhfbw8 = 1;
1262                 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
1263                 type |= F8MHZ;
1264         }
1265
1266         /* All S-code tables need a 200kHz shift */
1267         if (priv->ctrl.demod) {
1268                 demod = priv->ctrl.demod;
1269
1270                 /*
1271                  * Newer firmwares require a 200 kHz offset only for ATSC
1272                  */
1273                 if (type == ATSC || priv->firm_version < 0x0302)
1274                         demod += 200;
1275                 /*
1276                  * The DTV7 S-code table needs a 700 kHz shift.
1277                  *
1278                  * DTV7 is only used in Australia.  Germany or Italy may also
1279                  * use this firmware after initialization, but a tune to a UHF
1280                  * channel should then cause DTV78 to be used.
1281                  *
1282                  * Unfortunately, on real-field tests, the s-code offset
1283                  * didn't work as expected, as reported by
1284                  * Robert Lowery <rglowery@exemail.com.au>
1285                  */
1286         }
1287
1288         return generic_set_freq(fe, c->frequency,
1289                                 V4L2_TUNER_DIGITAL_TV, type, 0, demod);
1290 }
1291
1292 static int xc2028_sleep(struct dvb_frontend *fe)
1293 {
1294         struct xc2028_data *priv = fe->tuner_priv;
1295         int rc;
1296
1297         rc = check_device_status(priv);
1298         if (rc < 0)
1299                 return rc;
1300
1301         /* Device is already in sleep mode */
1302         if (!rc)
1303                 return 0;
1304
1305         /* Avoid firmware reload on slow devices or if PM disabled */
1306         if (no_poweroff || priv->ctrl.disable_power_mgmt)
1307                 return 0;
1308
1309         tuner_dbg("Putting xc2028/3028 into poweroff mode.\n");
1310         if (debug > 1) {
1311                 tuner_dbg("Printing sleep stack trace:\n");
1312                 dump_stack();
1313         }
1314
1315         mutex_lock(&priv->lock);
1316
1317         if (priv->firm_version < 0x0202)
1318                 rc = send_seq(priv, {0x00, XREG_POWER_DOWN, 0x00, 0x00});
1319         else
1320                 rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00});
1321
1322         if (rc >= 0)
1323                 priv->state = XC2028_SLEEP;
1324
1325         mutex_unlock(&priv->lock);
1326
1327         return rc;
1328 }
1329
1330 static int xc2028_dvb_release(struct dvb_frontend *fe)
1331 {
1332         struct xc2028_data *priv = fe->tuner_priv;
1333
1334         tuner_dbg("%s called\n", __func__);
1335
1336         mutex_lock(&xc2028_list_mutex);
1337
1338         /* only perform final cleanup if this is the last instance */
1339         if (hybrid_tuner_report_instance_count(priv) == 1)
1340                 free_firmware(priv);
1341
1342         if (priv)
1343                 hybrid_tuner_release_state(priv);
1344
1345         mutex_unlock(&xc2028_list_mutex);
1346
1347         fe->tuner_priv = NULL;
1348
1349         return 0;
1350 }
1351
1352 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1353 {
1354         struct xc2028_data *priv = fe->tuner_priv;
1355         int rc;
1356
1357         tuner_dbg("%s called\n", __func__);
1358
1359         rc = check_device_status(priv);
1360         if (rc < 0)
1361                 return rc;
1362
1363         *frequency = priv->frequency;
1364
1365         return 0;
1366 }
1367
1368 static void load_firmware_cb(const struct firmware *fw,
1369                              void *context)
1370 {
1371         struct dvb_frontend *fe = context;
1372         struct xc2028_data *priv = fe->tuner_priv;
1373         int rc;
1374
1375         tuner_dbg("reject_firmware_nowait(): %s\n", fw ? "OK" : "error");
1376         if (!fw) {
1377                 tuner_err("Could not load firmware %s.\n", priv->fname);
1378                 priv->state = XC2028_NODEV;
1379                 return;
1380         }
1381
1382         rc = load_all_firmwares(fe, fw);
1383
1384         release_firmware(fw);
1385
1386         if (rc < 0)
1387                 return;
1388         priv->state = XC2028_ACTIVE;
1389 }
1390
1391 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
1392 {
1393         struct xc2028_data *priv = fe->tuner_priv;
1394         struct xc2028_ctrl *p    = priv_cfg;
1395         int                 rc   = 0;
1396
1397         tuner_dbg("%s called\n", __func__);
1398
1399         mutex_lock(&priv->lock);
1400
1401         /*
1402          * Copy the config data.
1403          */
1404         memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
1405
1406         /*
1407          * If firmware name changed, frees firmware. As free_firmware will
1408          * reset the status to NO_FIRMWARE, this forces a new reject_firmware
1409          */
1410         if (!firmware_name[0] && p->fname &&
1411             priv->fname && strcmp(p->fname, priv->fname))
1412                 free_firmware(priv);
1413
1414         if (priv->ctrl.max_len < 9)
1415                 priv->ctrl.max_len = 13;
1416
1417         if (priv->state == XC2028_NO_FIRMWARE) {
1418                 if (!firmware_name[0])
1419                         priv->fname = kstrdup(p->fname, GFP_KERNEL);
1420                 else
1421                         priv->fname = firmware_name;
1422
1423                 if (!priv->fname) {
1424                         rc = -ENOMEM;
1425                         goto unlock;
1426                 }
1427
1428                 rc = reject_firmware_nowait(THIS_MODULE, 1,
1429                                              priv->fname,
1430                                              priv->i2c_props.adap->dev.parent,
1431                                              GFP_KERNEL,
1432                                              fe, load_firmware_cb);
1433                 if (rc < 0) {
1434                         tuner_err("Failed to request firmware %s\n",
1435                                   priv->fname);
1436                         priv->state = XC2028_NODEV;
1437                 } else
1438                         priv->state = XC2028_WAITING_FIRMWARE;
1439         }
1440 unlock:
1441         mutex_unlock(&priv->lock);
1442
1443         return rc;
1444 }
1445
1446 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
1447         .info = {
1448                  .name = "Xceive XC3028",
1449                  .frequency_min = 42000000,
1450                  .frequency_max = 864000000,
1451                  .frequency_step = 50000,
1452                  },
1453
1454         .set_config        = xc2028_set_config,
1455         .set_analog_params = xc2028_set_analog_freq,
1456         .release           = xc2028_dvb_release,
1457         .get_frequency     = xc2028_get_frequency,
1458         .get_rf_strength   = xc2028_signal,
1459         .get_afc           = xc2028_get_afc,
1460         .set_params        = xc2028_set_params,
1461         .sleep             = xc2028_sleep,
1462 };
1463
1464 struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,
1465                                    struct xc2028_config *cfg)
1466 {
1467         struct xc2028_data *priv;
1468         int instance;
1469
1470         if (debug)
1471                 printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n");
1472
1473         if (NULL == cfg)
1474                 return NULL;
1475
1476         if (!fe) {
1477                 printk(KERN_ERR "xc2028: No frontend!\n");
1478                 return NULL;
1479         }
1480
1481         mutex_lock(&xc2028_list_mutex);
1482
1483         instance = hybrid_tuner_request_state(struct xc2028_data, priv,
1484                                               hybrid_tuner_instance_list,
1485                                               cfg->i2c_adap, cfg->i2c_addr,
1486                                               "xc2028");
1487         switch (instance) {
1488         case 0:
1489                 /* memory allocation failure */
1490                 goto fail;
1491         case 1:
1492                 /* new tuner instance */
1493                 priv->ctrl.max_len = 13;
1494
1495                 mutex_init(&priv->lock);
1496
1497                 fe->tuner_priv = priv;
1498                 break;
1499         case 2:
1500                 /* existing tuner instance */
1501                 fe->tuner_priv = priv;
1502                 break;
1503         }
1504
1505         memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
1506                sizeof(xc2028_dvb_tuner_ops));
1507
1508         tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
1509
1510         if (cfg->ctrl)
1511                 xc2028_set_config(fe, cfg->ctrl);
1512
1513         mutex_unlock(&xc2028_list_mutex);
1514
1515         return fe;
1516 fail:
1517         mutex_unlock(&xc2028_list_mutex);
1518
1519         xc2028_dvb_release(fe);
1520         return NULL;
1521 }
1522
1523 EXPORT_SYMBOL(xc2028_attach);
1524
1525 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
1526 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
1527 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
1528 MODULE_LICENSE("GPL");
1529 /*(DEBLOBBED)*/