SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/dvb/frontends/dvb-pll.c

   1 /*
   2  * descriptions + helper functions for simple dvb plls.
   3  *
   4  * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/dvb/frontend.h>
  23 #include <asm/types.h>
  24
  25 #include "dvb-pll.h"
  26
  27 struct dvb_pll_priv {
  28         /* pll number */
  29         int nr;
  30
  31         /* i2c details */
  32         int pll_i2c_address;
  33         struct i2c_adapter *i2c;
  34
  35         /* the PLL descriptor */
  36         struct dvb_pll_desc *pll_desc;
  37
  38         /* cached frequency/bandwidth */
  39         u32 frequency;
  40         u32 bandwidth;
  41 };
  42
  43 #define DVB_PLL_MAX 64
  44
  45 static unsigned int dvb_pll_devcount;
  46
  47 static int debug;
  48 module_param(debug, int, 0644);
  49 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  50
  51 static unsigned int id[DVB_PLL_MAX] =
  52         { [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };
  53 module_param_array(id, int, NULL, 0644);
  54 MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");
  55
  56 /* ----------------------------------------------------------- */
  57
  58 struct dvb_pll_desc {
  59         char *name;
  60         u32  min;
  61         u32  max;
  62         u32  iffreq;
  63         void (*set)(struct dvb_frontend *fe, u8 *buf,
  64                     const struct dvb_frontend_parameters *params);
  65         u8   *initdata;
  66         u8   *sleepdata;
  67         int  count;
  68         struct {
  69                 u32 limit;
  70                 u32 stepsize;
  71                 u8  config;
  72                 u8  cb;
  73         } entries[12];
  74 };
  75
  76 /* ----------------------------------------------------------- */
  77 /* descriptions                                                */
  78
  79 static struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
  80         .name  = "Thomson dtt7579",
  81         .min   = 177000000,
  82         .max   = 858000000,
  83         .iffreq= 36166667,
  84         .sleepdata = (u8[]){ 2, 0xb4, 0x03 },
  85         .count = 4,
  86         .entries = {
  87                 {  443250000, 166667, 0xb4, 0x02 },
  88                 {  542000000, 166667, 0xb4, 0x08 },
  89                 {  771000000, 166667, 0xbc, 0x08 },
  90                 {  999999999, 166667, 0xf4, 0x08 },
  91         },
  92 };
  93
  94 static void thomson_dtt759x_bw(struct dvb_frontend *fe, u8 *buf,
  95                                const struct dvb_frontend_parameters *params)
  96 {
  97         if (BANDWIDTH_7_MHZ == params->u.ofdm.bandwidth)
  98                 buf[3] |= 0x10;
  99 }
 100
 101 static struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
 102         .name  = "Thomson dtt759x",
 103         .min   = 177000000,
 104         .max   = 896000000,
 105         .set   = thomson_dtt759x_bw,
 106         .iffreq= 36166667,
 107         .sleepdata = (u8[]){ 2, 0x84, 0x03 },
 108         .count = 5,
 109         .entries = {
 110                 {  264000000, 166667, 0xb4, 0x02 },
 111                 {  470000000, 166667, 0xbc, 0x02 },
 112                 {  735000000, 166667, 0xbc, 0x08 },
 113                 {  835000000, 166667, 0xf4, 0x08 },
 114                 {  999999999, 166667, 0xfc, 0x08 },
 115         },
 116 };
 117
 118 static struct dvb_pll_desc dvb_pll_lg_z201 = {
 119         .name  = "LG z201",
 120         .min   = 174000000,
 121         .max   = 862000000,
 122         .iffreq= 36166667,
 123         .sleepdata = (u8[]){ 2, 0xbc, 0x03 },
 124         .count = 5,
 125         .entries = {
 126                 {  157500000, 166667, 0xbc, 0x01 },
 127                 {  443250000, 166667, 0xbc, 0x02 },
 128                 {  542000000, 166667, 0xbc, 0x04 },
 129                 {  830000000, 166667, 0xf4, 0x04 },
 130                 {  999999999, 166667, 0xfc, 0x04 },
 131         },
 132 };
 133
 134 static struct dvb_pll_desc dvb_pll_unknown_1 = {
 135         .name  = "unknown 1", /* used by dntv live dvb-t */
 136         .min   = 174000000,
 137         .max   = 862000000,
 138         .iffreq= 36166667,
 139         .count = 9,
 140         .entries = {
 141                 {  150000000, 166667, 0xb4, 0x01 },
 142                 {  173000000, 166667, 0xbc, 0x01 },
 143                 {  250000000, 166667, 0xb4, 0x02 },
 144                 {  400000000, 166667, 0xbc, 0x02 },
 145                 {  420000000, 166667, 0xf4, 0x02 },
 146                 {  470000000, 166667, 0xfc, 0x02 },
 147                 {  600000000, 166667, 0xbc, 0x08 },
 148                 {  730000000, 166667, 0xf4, 0x08 },
 149                 {  999999999, 166667, 0xfc, 0x08 },
 150         },
 151 };
 152
 153 /* Infineon TUA6010XS
 154  * used in Thomson Cable Tuner
 155  */
 156 static struct dvb_pll_desc dvb_pll_tua6010xs = {
 157         .name  = "Infineon TUA6010XS",
 158         .min   =  44250000,
 159         .max   = 858000000,
 160         .iffreq= 36125000,
 161         .count = 3,
 162         .entries = {
 163                 {  115750000, 62500, 0x8e, 0x03 },
 164                 {  403250000, 62500, 0x8e, 0x06 },
 165                 {  999999999, 62500, 0x8e, 0x85 },
 166         },
 167 };
 168
 169 /* Panasonic env57h1xd5 (some Philips PLL ?) */
 170 static struct dvb_pll_desc dvb_pll_env57h1xd5 = {
 171         .name  = "Panasonic ENV57H1XD5",
 172         .min   =  44250000,
 173         .max   = 858000000,
 174         .iffreq= 36125000,
 175         .count = 4,
 176         .entries = {
 177                 {  153000000, 166667, 0xc2, 0x41 },
 178                 {  470000000, 166667, 0xc2, 0x42 },
 179                 {  526000000, 166667, 0xc2, 0x84 },
 180                 {  999999999, 166667, 0xc2, 0xa4 },
 181         },
 182 };
 183
 184 /* Philips TDA6650/TDA6651
 185  * used in Panasonic ENV77H11D5
 186  */
 187 static void tda665x_bw(struct dvb_frontend *fe, u8 *buf,
 188                        const struct dvb_frontend_parameters *params)
 189 {
 190         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 191                 buf[3] |= 0x08;
 192 }
 193
 194 static struct dvb_pll_desc dvb_pll_tda665x = {
 195         .name  = "Philips TDA6650/TDA6651",
 196         .min   =  44250000,
 197         .max   = 858000000,
 198         .set   = tda665x_bw,
 199         .iffreq= 36166667,
 200         .initdata = (u8[]){ 4, 0x0b, 0xf5, 0x85, 0xab },
 201         .count = 12,
 202         .entries = {
 203                 {   93834000, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
 204                 {  123834000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 205                 {  161000000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 206                 {  163834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 207                 {  253834000, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
 208                 {  383834000, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
 209                 {  443834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 210                 {  444000000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 211                 {  583834000, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
 212                 {  793834000, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
 213                 {  444834000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 214                 {  861000000, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
 215         }
 216 };
 217
 218 /* Infineon TUA6034
 219  * used in LG TDTP E102P
 220  */
 221 static void tua6034_bw(struct dvb_frontend *fe, u8 *buf,
 222                        const struct dvb_frontend_parameters *params)
 223 {
 224         if (BANDWIDTH_7_MHZ != params->u.ofdm.bandwidth)
 225                 buf[3] |= 0x08;
 226 }
 227
 228 static struct dvb_pll_desc dvb_pll_tua6034 = {
 229         .name  = "Infineon TUA6034",
 230         .min   =  44250000,
 231         .max   = 858000000,
 232         .iffreq= 36166667,
 233         .count = 3,
 234         .set   = tua6034_bw,
 235         .entries = {
 236                 {  174500000, 62500, 0xce, 0x01 },
 237                 {  230000000, 62500, 0xce, 0x02 },
 238                 {  999999999, 62500, 0xce, 0x04 },
 239         },
 240 };
 241
 242 /* ALPS TDED4
 243  * used in Nebula-Cards and USB boxes
 244  */
 245 static void tded4_bw(struct dvb_frontend *fe, u8 *buf,
 246                      const struct dvb_frontend_parameters *params)
 247 {
 248         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 249                 buf[3] |= 0x04;
 250 }
 251
 252 static struct dvb_pll_desc dvb_pll_tded4 = {
 253         .name = "ALPS TDED4",
 254         .min = 47000000,
 255         .max = 863000000,
 256         .iffreq= 36166667,
 257         .set   = tded4_bw,
 258         .count = 4,
 259         .entries = {
 260                 { 153000000, 166667, 0x85, 0x01 },
 261                 { 470000000, 166667, 0x85, 0x02 },
 262                 { 823000000, 166667, 0x85, 0x08 },
 263                 { 999999999, 166667, 0x85, 0x88 },
 264         }
 265 };
 266
 267 /* ALPS TDHU2
 268  * used in AverTVHD MCE A180
 269  */
 270 static struct dvb_pll_desc dvb_pll_tdhu2 = {
 271         .name = "ALPS TDHU2",
 272         .min = 54000000,
 273         .max = 864000000,
 274         .iffreq= 44000000,
 275         .count = 4,
 276         .entries = {
 277                 { 162000000, 62500, 0x85, 0x01 },
 278                 { 426000000, 62500, 0x85, 0x02 },
 279                 { 782000000, 62500, 0x85, 0x08 },
 280                 { 999999999, 62500, 0x85, 0x88 },
 281         }
 282 };
 283
 284 /* Samsung TBMV30111IN / TBMV30712IN1
 285  * used in Air2PC ATSC - 2nd generation (nxt2002)
 286  */
 287 static struct dvb_pll_desc dvb_pll_samsung_tbmv = {
 288         .name = "Samsung TBMV30111IN / TBMV30712IN1",
 289         .min = 54000000,
 290         .max = 860000000,
 291         .iffreq= 44000000,
 292         .count = 6,
 293         .entries = {
 294                 { 172000000, 166667, 0xb4, 0x01 },
 295                 { 214000000, 166667, 0xb4, 0x02 },
 296                 { 467000000, 166667, 0xbc, 0x02 },
 297                 { 721000000, 166667, 0xbc, 0x08 },
 298                 { 841000000, 166667, 0xf4, 0x08 },
 299                 { 999999999, 166667, 0xfc, 0x02 },
 300         }
 301 };
 302
 303 /*
 304  * Philips SD1878 Tuner.
 305  */
 306 static struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
 307         .name  = "Philips SD1878",
 308         .min   =  950000,
 309         .max   = 2150000,
 310         .iffreq= 249, /* zero-IF, offset 249 is to round up */
 311         .count = 4,
 312         .entries = {
 313                 { 1250000, 500, 0xc4, 0x00},
 314                 { 1450000, 500, 0xc4, 0x40},
 315                 { 2050000, 500, 0xc4, 0x80},
 316                 { 2150000, 500, 0xc4, 0xc0},
 317         },
 318 };
 319
 320 static void opera1_bw(struct dvb_frontend *fe, u8 *buf,
 321                       const struct dvb_frontend_parameters *params)
 322 {
 323         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 324                 buf[2] |= 0x08;
 325 }
 326
 327 static struct dvb_pll_desc dvb_pll_opera1 = {
 328         .name  = "Opera Tuner",
 329         .min   =  900000,
 330         .max   = 2250000,
 331         .iffreq= 0,
 332         .set   = opera1_bw,
 333         .count = 8,
 334         .entries = {
 335                 { 1064000, 500, 0xe5, 0xc6 },
 336                 { 1169000, 500, 0xe5, 0xe6 },
 337                 { 1299000, 500, 0xe5, 0x24 },
 338                 { 1444000, 500, 0xe5, 0x44 },
 339                 { 1606000, 500, 0xe5, 0x64 },
 340                 { 1777000, 500, 0xe5, 0x84 },
 341                 { 1941000, 500, 0xe5, 0xa4 },
 342                 { 2250000, 500, 0xe5, 0xc4 },
 343         }
 344 };
 345
 346 static void samsung_dtos403ih102a_set(struct dvb_frontend *fe, u8 *buf,
 347                        const struct dvb_frontend_parameters *params)
 348 {
 349         struct dvb_pll_priv *priv = fe->tuner_priv;
 350         struct i2c_msg msg = {
 351                 .addr = priv->pll_i2c_address,
 352                 .flags = 0,
 353                 .buf = buf,
 354                 .len = 4
 355         };
 356         int result;
 357
 358         if (fe->ops.i2c_gate_ctrl)
 359                 fe->ops.i2c_gate_ctrl(fe, 1);
 360
 361         result = i2c_transfer(priv->i2c, &msg, 1);
 362         if (result != 1)
 363                 printk(KERN_ERR "%s: i2c_transfer failed:%d",
 364                         __func__, result);
 365
 366         buf[2] = 0x9e;
 367         buf[3] = 0x90;
 368
 369         return;
 370 }
 371
 372 /* unknown pll used in Samsung DTOS403IH102A DVB-C tuner */
 373 static struct dvb_pll_desc dvb_pll_samsung_dtos403ih102a = {
 374         .name   = "Samsung DTOS403IH102A",
 375         .min    =  44250000,
 376         .max    = 858000000,
 377         .iffreq =  36125000,
 378         .count  = 8,
 379         .set    = samsung_dtos403ih102a_set,
 380         .entries = {
 381                 { 135000000, 62500, 0xbe, 0x01 },
 382                 { 177000000, 62500, 0xf6, 0x01 },
 383                 { 370000000, 62500, 0xbe, 0x02 },
 384                 { 450000000, 62500, 0xf6, 0x02 },
 385                 { 466000000, 62500, 0xfe, 0x02 },
 386                 { 538000000, 62500, 0xbe, 0x08 },
 387                 { 826000000, 62500, 0xf6, 0x08 },
 388                 { 999999999, 62500, 0xfe, 0x08 },
 389         }
 390 };
 391
 392 /* Samsung TDTC9251DH0 DVB-T NIM, as used on AirStar 2 */
 393 static struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
 394         .name   = "Samsung TDTC9251DH0",
 395         .min    =  48000000,
 396         .max    = 863000000,
 397         .iffreq =  36166667,
 398         .count  = 3,
 399         .entries = {
 400                 { 157500000, 166667, 0xcc, 0x09 },
 401                 { 443000000, 166667, 0xcc, 0x0a },
 402                 { 863000000, 166667, 0xcc, 0x08 },
 403         }
 404 };
 405
 406 /* ----------------------------------------------------------- */
 407
 408 static struct dvb_pll_desc *pll_list[] = {
 409         [DVB_PLL_UNDEFINED]              = NULL,
 410         [DVB_PLL_THOMSON_DTT7579]        = &dvb_pll_thomson_dtt7579,
 411         [DVB_PLL_THOMSON_DTT759X]        = &dvb_pll_thomson_dtt759x,
 412         [DVB_PLL_LG_Z201]                = &dvb_pll_lg_z201,
 413         [DVB_PLL_UNKNOWN_1]              = &dvb_pll_unknown_1,
 414         [DVB_PLL_TUA6010XS]              = &dvb_pll_tua6010xs,
 415         [DVB_PLL_ENV57H1XD5]             = &dvb_pll_env57h1xd5,
 416         [DVB_PLL_TUA6034]                = &dvb_pll_tua6034,
 417         [DVB_PLL_TDA665X]                = &dvb_pll_tda665x,
 418         [DVB_PLL_TDED4]                  = &dvb_pll_tded4,
 419         [DVB_PLL_TDHU2]                  = &dvb_pll_tdhu2,
 420         [DVB_PLL_SAMSUNG_TBMV]           = &dvb_pll_samsung_tbmv,
 421         [DVB_PLL_PHILIPS_SD1878_TDA8261] = &dvb_pll_philips_sd1878_tda8261,
 422         [DVB_PLL_OPERA1]                 = &dvb_pll_opera1,
 423         [DVB_PLL_SAMSUNG_DTOS403IH102A]  = &dvb_pll_samsung_dtos403ih102a,
 424         [DVB_PLL_SAMSUNG_TDTC9251DH0]    = &dvb_pll_samsung_tdtc9251dh0,
 425 };
 426
 427 /* ----------------------------------------------------------- */
 428 /* code                                                        */
 429
 430 static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
 431                              const struct dvb_frontend_parameters *params)
 432 {
 433         struct dvb_pll_priv *priv = fe->tuner_priv;
 434         struct dvb_pll_desc *desc = priv->pll_desc;
 435         u32 div;
 436         int i;
 437
 438         if (params->frequency != 0 && (params->frequency < desc->min ||
 439                                        params->frequency > desc->max))
 440                 return -EINVAL;
 441
 442         for (i = 0; i < desc->count; i++) {
 443                 if (params->frequency > desc->entries[i].limit)
 444                         continue;
 445                 break;
 446         }
 447
 448         if (debug)
 449                 printk("pll: %s: freq=%d | i=%d/%d\n", desc->name,
 450                        params->frequency, i, desc->count);
 451         if (i == desc->count)
 452                 return -EINVAL;
 453
 454         div = (params->frequency + desc->iffreq +
 455                desc->entries[i].stepsize/2) / desc->entries[i].stepsize;
 456         buf[0] = div >> 8;
 457         buf[1] = div & 0xff;
 458         buf[2] = desc->entries[i].config;
 459         buf[3] = desc->entries[i].cb;
 460
 461         if (desc->set)
 462                 desc->set(fe, buf, params);
 463
 464         if (debug)
 465                 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
 466                        desc->name, div, buf[0], buf[1], buf[2], buf[3]);
 467
 468         // calculate the frequency we set it to
 469         return (div * desc->entries[i].stepsize) - desc->iffreq;
 470 }
 471
 472 static int dvb_pll_release(struct dvb_frontend *fe)
 473 {
 474         kfree(fe->tuner_priv);
 475         fe->tuner_priv = NULL;
 476         return 0;
 477 }
 478
 479 static int dvb_pll_sleep(struct dvb_frontend *fe)
 480 {
 481         struct dvb_pll_priv *priv = fe->tuner_priv;
 482
 483         if (priv->i2c == NULL)
 484                 return -EINVAL;
 485
 486         if (priv->pll_desc->sleepdata) {
 487                 struct i2c_msg msg = { .flags = 0,
 488                         .addr = priv->pll_i2c_address,
 489                         .buf = priv->pll_desc->sleepdata + 1,
 490                         .len = priv->pll_desc->sleepdata[0] };
 491
 492                 int result;
 493
 494                 if (fe->ops.i2c_gate_ctrl)
 495                         fe->ops.i2c_gate_ctrl(fe, 1);
 496                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 497                         return result;
 498                 }
 499                 return 0;
 500         }
 501         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 502         return -EINVAL;
 503 }
 504
 505 static int dvb_pll_set_params(struct dvb_frontend *fe,
 506                               struct dvb_frontend_parameters *params)
 507 {
 508         struct dvb_pll_priv *priv = fe->tuner_priv;
 509         u8 buf[4];
 510         struct i2c_msg msg =
 511                 { .addr = priv->pll_i2c_address, .flags = 0,
 512                   .buf = buf, .len = sizeof(buf) };
 513         int result;
 514         u32 frequency = 0;
 515
 516         if (priv->i2c == NULL)
 517                 return -EINVAL;
 518
 519         if ((result = dvb_pll_configure(fe, buf, params)) < 0)
 520                 return result;
 521         else
 522                 frequency = result;
 523
 524         if (fe->ops.i2c_gate_ctrl)
 525                 fe->ops.i2c_gate_ctrl(fe, 1);
 526         if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 527                 return result;
 528         }
 529
 530         priv->frequency = frequency;
 531         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
 532
 533         return 0;
 534 }
 535
 536 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
 537                              struct dvb_frontend_parameters *params,
 538                              u8 *buf, int buf_len)
 539 {
 540         struct dvb_pll_priv *priv = fe->tuner_priv;
 541         int result;
 542         u32 frequency = 0;
 543
 544         if (buf_len < 5)
 545                 return -EINVAL;
 546
 547         if ((result = dvb_pll_configure(fe, buf+1, params)) < 0)
 548                 return result;
 549         else
 550                 frequency = result;
 551
 552         buf[0] = priv->pll_i2c_address;
 553
 554         priv->frequency = frequency;
 555         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
 556
 557         return 5;
 558 }
 559
 560 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 561 {
 562         struct dvb_pll_priv *priv = fe->tuner_priv;
 563         *frequency = priv->frequency;
 564         return 0;
 565 }
 566
 567 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 568 {
 569         struct dvb_pll_priv *priv = fe->tuner_priv;
 570         *bandwidth = priv->bandwidth;
 571         return 0;
 572 }
 573
 574 static int dvb_pll_init(struct dvb_frontend *fe)
 575 {
 576         struct dvb_pll_priv *priv = fe->tuner_priv;
 577
 578         if (priv->i2c == NULL)
 579                 return -EINVAL;
 580
 581         if (priv->pll_desc->initdata) {
 582                 struct i2c_msg msg = { .flags = 0,
 583                         .addr = priv->pll_i2c_address,
 584                         .buf = priv->pll_desc->initdata + 1,
 585                         .len = priv->pll_desc->initdata[0] };
 586
 587                 int result;
 588                 if (fe->ops.i2c_gate_ctrl)
 589                         fe->ops.i2c_gate_ctrl(fe, 1);
 590                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 591                         return result;
 592                 }
 593                 return 0;
 594         }
 595         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 596         return -EINVAL;
 597 }
 598
 599 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
 600         .release = dvb_pll_release,
 601         .sleep = dvb_pll_sleep,
 602         .init = dvb_pll_init,
 603         .set_params = dvb_pll_set_params,
 604         .calc_regs = dvb_pll_calc_regs,
 605         .get_frequency = dvb_pll_get_frequency,
 606         .get_bandwidth = dvb_pll_get_bandwidth,
 607 };
 608
 609 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
 610                                     struct i2c_adapter *i2c,
 611                                     unsigned int pll_desc_id)
 612 {
 613         u8 b1 [] = { 0 };
 614         struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
 615                                .buf = b1, .len = 1 };
 616         struct dvb_pll_priv *priv = NULL;
 617         int ret;
 618         struct dvb_pll_desc *desc;
 619
 620         if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&
 621             (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))
 622                 pll_desc_id = id[dvb_pll_devcount];
 623
 624         BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));
 625
 626         desc = pll_list[pll_desc_id];
 627
 628         if (i2c != NULL) {
 629                 if (fe->ops.i2c_gate_ctrl)
 630                         fe->ops.i2c_gate_ctrl(fe, 1);
 631
 632                 ret = i2c_transfer (i2c, &msg, 1);
 633                 if (ret != 1)
 634                         return NULL;
 635                 if (fe->ops.i2c_gate_ctrl)
 636                              fe->ops.i2c_gate_ctrl(fe, 0);
 637         }
 638
 639         priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
 640         if (priv == NULL)
 641                 return NULL;
 642
 643         priv->pll_i2c_address = pll_addr;
 644         priv->i2c = i2c;
 645         priv->pll_desc = desc;
 646         priv->nr = dvb_pll_devcount++;
 647
 648         memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
 649                sizeof(struct dvb_tuner_ops));
 650
 651         strncpy(fe->ops.tuner_ops.info.name, desc->name,
 652                 sizeof(fe->ops.tuner_ops.info.name));
 653         fe->ops.tuner_ops.info.frequency_min = desc->min;
 654         fe->ops.tuner_ops.info.frequency_max = desc->max;
 655         if (!desc->initdata)
 656                 fe->ops.tuner_ops.init = NULL;
 657         if (!desc->sleepdata)
 658                 fe->ops.tuner_ops.sleep = NULL;
 659
 660         fe->tuner_priv = priv;
 661
 662         if ((debug) || (id[priv->nr] == pll_desc_id)) {
 663                 printk("dvb-pll[%d]", priv->nr);
 664                 if (i2c != NULL)
 665                         printk(" %d-%04x", i2c_adapter_id(i2c), pll_addr);
 666                 printk(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,
 667                        id[priv->nr] == pll_desc_id ?
 668                                 "insmod option" : "autodetected");
 669         }
 670
 671         return fe;
 672 }
 673 EXPORT_SYMBOL(dvb_pll_attach);
 674
 675 MODULE_DESCRIPTION("dvb pll library");
 676 MODULE_AUTHOR("Gerd Knorr");
 677 MODULE_LICENSE("GPL");