git.oblomov.eu Git - 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 /* ----------------------------------------------------------- */
  28 /* descriptions                                                */
  29
  30 /* Set AGC TOP value to 103 dBuV:
  31         0x80 = Control Byte
  32         0x40 = 250 uA charge pump (irrelevant)
  33         0x18 = Aux Byte to follow
  34         0x06 = 64.5 kHz divider (irrelevant)
  35         0x01 = Disable Vt (aka sleep)
  36
  37         0x00 = AGC Time constant 2s Iagc = 300 nA (vs 0x80 = 9 nA)
  38         0x50 = AGC Take over point = 103 dBuV */
  39 static u8 tua603x_agc103[] = { 2, 0x80|0x40|0x18|0x06|0x01, 0x00|0x50 };
  40
  41 struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
  42         .name  = "Thomson dtt7579",
  43         .min   = 177000000,
  44         .max   = 858000000,
  45         .iffreq= 36166667,
  46         .sleepdata = (u8[]){ 2, 0xb4, 0x03 },
  47         .count = 4,
  48         .entries = {
  49                 {  443250000, 166667, 0xb4, 0x02 },
  50                 {  542000000, 166667, 0xb4, 0x08 },
  51                 {  771000000, 166667, 0xbc, 0x08 },
  52                 {  999999999, 166667, 0xf4, 0x08 },
  53         },
  54 };
  55 EXPORT_SYMBOL(dvb_pll_thomson_dtt7579);
  56
  57 struct dvb_pll_desc dvb_pll_thomson_dtt7610 = {
  58         .name  = "Thomson dtt7610",
  59         .min   =  44000000,
  60         .max   = 958000000,
  61         .iffreq= 44000000,
  62         .count = 3,
  63         .entries = {
  64                 { 157250000, 62500, 0x8e, 0x39 },
  65                 { 454000000, 62500, 0x8e, 0x3a },
  66                 { 999999999, 62500, 0x8e, 0x3c },
  67         },
  68 };
  69 EXPORT_SYMBOL(dvb_pll_thomson_dtt7610);
  70
  71 static void thomson_dtt759x_bw(u8 *buf, u32 freq, int bandwidth)
  72 {
  73         if (BANDWIDTH_7_MHZ == bandwidth)
  74                 buf[3] |= 0x10;
  75 }
  76
  77 struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
  78         .name  = "Thomson dtt759x",
  79         .min   = 177000000,
  80         .max   = 896000000,
  81         .setbw = thomson_dtt759x_bw,
  82         .iffreq= 36166667,
  83         .sleepdata = (u8[]){ 2, 0x84, 0x03 },
  84         .count = 5,
  85         .entries = {
  86                 {  264000000, 166667, 0xb4, 0x02 },
  87                 {  470000000, 166667, 0xbc, 0x02 },
  88                 {  735000000, 166667, 0xbc, 0x08 },
  89                 {  835000000, 166667, 0xf4, 0x08 },
  90                 {  999999999, 166667, 0xfc, 0x08 },
  91         },
  92 };
  93 EXPORT_SYMBOL(dvb_pll_thomson_dtt759x);
  94
  95 struct dvb_pll_desc dvb_pll_lg_z201 = {
  96         .name  = "LG z201",
  97         .min   = 174000000,
  98         .max   = 862000000,
  99         .iffreq= 36166667,
 100         .sleepdata = (u8[]){ 2, 0xbc, 0x03 },
 101         .count = 5,
 102         .entries = {
 103                 {  157500000, 166667, 0xbc, 0x01 },
 104                 {  443250000, 166667, 0xbc, 0x02 },
 105                 {  542000000, 166667, 0xbc, 0x04 },
 106                 {  830000000, 166667, 0xf4, 0x04 },
 107                 {  999999999, 166667, 0xfc, 0x04 },
 108         },
 109 };
 110 EXPORT_SYMBOL(dvb_pll_lg_z201);
 111
 112 struct dvb_pll_desc dvb_pll_microtune_4042 = {
 113         .name  = "Microtune 4042 FI5",
 114         .min   =  57000000,
 115         .max   = 858000000,
 116         .iffreq= 44000000,
 117         .count = 3,
 118         .entries = {
 119                 { 162000000, 62500, 0x8e, 0xa1 },
 120                 { 457000000, 62500, 0x8e, 0x91 },
 121                 { 999999999, 62500, 0x8e, 0x31 },
 122         },
 123 };
 124 EXPORT_SYMBOL(dvb_pll_microtune_4042);
 125
 126 struct dvb_pll_desc dvb_pll_thomson_dtt761x = {
 127         /* DTT 7611 7611A 7612 7613 7613A 7614 7615 7615A */
 128         .name  = "Thomson dtt761x",
 129         .min   =  57000000,
 130         .max   = 863000000,
 131         .iffreq= 44000000,
 132         .count = 3,
 133         .initdata = tua603x_agc103,
 134         .entries = {
 135                 { 147000000, 62500, 0x8e, 0x39 },
 136                 { 417000000, 62500, 0x8e, 0x3a },
 137                 { 999999999, 62500, 0x8e, 0x3c },
 138         },
 139 };
 140 EXPORT_SYMBOL(dvb_pll_thomson_dtt761x);
 141
 142 struct dvb_pll_desc dvb_pll_unknown_1 = {
 143         .name  = "unknown 1", /* used by dntv live dvb-t */
 144         .min   = 174000000,
 145         .max   = 862000000,
 146         .iffreq= 36166667,
 147         .count = 9,
 148         .entries = {
 149                 {  150000000, 166667, 0xb4, 0x01 },
 150                 {  173000000, 166667, 0xbc, 0x01 },
 151                 {  250000000, 166667, 0xb4, 0x02 },
 152                 {  400000000, 166667, 0xbc, 0x02 },
 153                 {  420000000, 166667, 0xf4, 0x02 },
 154                 {  470000000, 166667, 0xfc, 0x02 },
 155                 {  600000000, 166667, 0xbc, 0x08 },
 156                 {  730000000, 166667, 0xf4, 0x08 },
 157                 {  999999999, 166667, 0xfc, 0x08 },
 158         },
 159 };
 160 EXPORT_SYMBOL(dvb_pll_unknown_1);
 161
 162 /* Infineon TUA6010XS
 163  * used in Thomson Cable Tuner
 164  */
 165 struct dvb_pll_desc dvb_pll_tua6010xs = {
 166         .name  = "Infineon TUA6010XS",
 167         .min   =  44250000,
 168         .max   = 858000000,
 169         .iffreq= 36125000,
 170         .count = 3,
 171         .entries = {
 172                 {  115750000, 62500, 0x8e, 0x03 },
 173                 {  403250000, 62500, 0x8e, 0x06 },
 174                 {  999999999, 62500, 0x8e, 0x85 },
 175         },
 176 };
 177 EXPORT_SYMBOL(dvb_pll_tua6010xs);
 178
 179 /* Panasonic env57h1xd5 (some Philips PLL ?) */
 180 struct dvb_pll_desc dvb_pll_env57h1xd5 = {
 181         .name  = "Panasonic ENV57H1XD5",
 182         .min   =  44250000,
 183         .max   = 858000000,
 184         .iffreq= 36125000,
 185         .count = 4,
 186         .entries = {
 187                 {  153000000, 166667, 0xc2, 0x41 },
 188                 {  470000000, 166667, 0xc2, 0x42 },
 189                 {  526000000, 166667, 0xc2, 0x84 },
 190                 {  999999999, 166667, 0xc2, 0xa4 },
 191         },
 192 };
 193 EXPORT_SYMBOL(dvb_pll_env57h1xd5);
 194
 195 /* Philips TDA6650/TDA6651
 196  * used in Panasonic ENV77H11D5
 197  */
 198 static void tda665x_bw(u8 *buf, u32 freq, int bandwidth)
 199 {
 200         if (bandwidth == BANDWIDTH_8_MHZ)
 201                 buf[3] |= 0x08;
 202 }
 203
 204 struct dvb_pll_desc dvb_pll_tda665x = {
 205         .name  = "Philips TDA6650/TDA6651",
 206         .min   =  44250000,
 207         .max   = 858000000,
 208         .setbw = tda665x_bw,
 209         .iffreq= 36166667,
 210         .count = 12,
 211         .entries = {
 212                 {   93834000, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
 213                 {  123834000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 214                 {  161000000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 215                 {  163834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 216                 {  253834000, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
 217                 {  383834000, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
 218                 {  443834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 219                 {  444000000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 220                 {  583834000, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
 221                 {  793834000, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
 222                 {  444834000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 223                 {  861000000, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
 224         }
 225 };
 226 EXPORT_SYMBOL(dvb_pll_tda665x);
 227
 228 /* Infineon TUA6034
 229  * used in LG TDTP E102P
 230  */
 231 static void tua6034_bw(u8 *buf, u32 freq, int bandwidth)
 232 {
 233         if (BANDWIDTH_7_MHZ != bandwidth)
 234                 buf[3] |= 0x08;
 235 }
 236
 237 struct dvb_pll_desc dvb_pll_tua6034 = {
 238         .name  = "Infineon TUA6034",
 239         .min   =  44250000,
 240         .max   = 858000000,
 241         .iffreq= 36166667,
 242         .count = 3,
 243         .setbw = tua6034_bw,
 244         .entries = {
 245                 {  174500000, 62500, 0xce, 0x01 },
 246                 {  230000000, 62500, 0xce, 0x02 },
 247                 {  999999999, 62500, 0xce, 0x04 },
 248         },
 249 };
 250 EXPORT_SYMBOL(dvb_pll_tua6034);
 251
 252 /* Infineon TUA6034
 253  * used in LG TDVS-H061F, LG TDVS-H062F and LG TDVS-H064F
 254  */
 255 struct dvb_pll_desc dvb_pll_lg_tdvs_h06xf = {
 256         .name  = "LG TDVS-H06xF",
 257         .min   =  54000000,
 258         .max   = 863000000,
 259         .iffreq= 44000000,
 260         .initdata = tua603x_agc103,
 261         .count = 3,
 262         .entries = {
 263                 {  165000000, 62500, 0xce, 0x01 },
 264                 {  450000000, 62500, 0xce, 0x02 },
 265                 {  999999999, 62500, 0xce, 0x04 },
 266         },
 267 };
 268 EXPORT_SYMBOL(dvb_pll_lg_tdvs_h06xf);
 269
 270 /* Philips FMD1216ME
 271  * used in Medion Hybrid PCMCIA card and USB Box
 272  */
 273 static void fmd1216me_bw(u8 *buf, u32 freq, int bandwidth)
 274 {
 275         if (bandwidth == BANDWIDTH_8_MHZ && freq >= 158870000)
 276                 buf[3] |= 0x08;
 277 }
 278
 279 struct dvb_pll_desc dvb_pll_fmd1216me = {
 280         .name = "Philips FMD1216ME",
 281         .min = 50870000,
 282         .max = 858000000,
 283         .iffreq= 36125000,
 284         .setbw = fmd1216me_bw,
 285         .count = 7,
 286         .entries = {
 287                 { 143870000, 166667, 0xbc, 0x41 },
 288                 { 158870000, 166667, 0xf4, 0x41 },
 289                 { 329870000, 166667, 0xbc, 0x42 },
 290                 { 441870000, 166667, 0xf4, 0x42 },
 291                 { 625870000, 166667, 0xbc, 0x44 },
 292                 { 803870000, 166667, 0xf4, 0x44 },
 293                 { 999999999, 166667, 0xfc, 0x44 },
 294         }
 295 };
 296 EXPORT_SYMBOL(dvb_pll_fmd1216me);
 297
 298 /* ALPS TDED4
 299  * used in Nebula-Cards and USB boxes
 300  */
 301 static void tded4_bw(u8 *buf, u32 freq, int bandwidth)
 302 {
 303         if (bandwidth == BANDWIDTH_8_MHZ)
 304                 buf[3] |= 0x04;
 305 }
 306
 307 struct dvb_pll_desc dvb_pll_tded4 = {
 308         .name = "ALPS TDED4",
 309         .min = 47000000,
 310         .max = 863000000,
 311         .iffreq= 36166667,
 312         .setbw = tded4_bw,
 313         .count = 4,
 314         .entries = {
 315                 { 153000000, 166667, 0x85, 0x01 },
 316                 { 470000000, 166667, 0x85, 0x02 },
 317                 { 823000000, 166667, 0x85, 0x08 },
 318                 { 999999999, 166667, 0x85, 0x88 },
 319         }
 320 };
 321 EXPORT_SYMBOL(dvb_pll_tded4);
 322
 323 /* ALPS TDHU2
 324  * used in AverTVHD MCE A180
 325  */
 326 struct dvb_pll_desc dvb_pll_tdhu2 = {
 327         .name = "ALPS TDHU2",
 328         .min = 54000000,
 329         .max = 864000000,
 330         .iffreq= 44000000,
 331         .count = 4,
 332         .entries = {
 333                 { 162000000, 62500, 0x85, 0x01 },
 334                 { 426000000, 62500, 0x85, 0x02 },
 335                 { 782000000, 62500, 0x85, 0x08 },
 336                 { 999999999, 62500, 0x85, 0x88 },
 337         }
 338 };
 339 EXPORT_SYMBOL(dvb_pll_tdhu2);
 340
 341 /* Philips TUV1236D
 342  * used in ATI HDTV Wonder
 343  */
 344 struct dvb_pll_desc dvb_pll_tuv1236d = {
 345         .name  = "Philips TUV1236D",
 346         .min   =  54000000,
 347         .max   = 864000000,
 348         .iffreq= 44000000,
 349         .count = 3,
 350         .entries = {
 351                 { 157250000, 62500, 0xc6, 0x41 },
 352                 { 454000000, 62500, 0xc6, 0x42 },
 353                 { 999999999, 62500, 0xc6, 0x44 },
 354         },
 355 };
 356 EXPORT_SYMBOL(dvb_pll_tuv1236d);
 357
 358 /* Samsung TBMV30111IN / TBMV30712IN1
 359  * used in Air2PC ATSC - 2nd generation (nxt2002)
 360  */
 361 struct dvb_pll_desc dvb_pll_samsung_tbmv = {
 362         .name = "Samsung TBMV30111IN / TBMV30712IN1",
 363         .min = 54000000,
 364         .max = 860000000,
 365         .iffreq= 44000000,
 366         .count = 6,
 367         .entries = {
 368                 { 172000000, 166667, 0xb4, 0x01 },
 369                 { 214000000, 166667, 0xb4, 0x02 },
 370                 { 467000000, 166667, 0xbc, 0x02 },
 371                 { 721000000, 166667, 0xbc, 0x08 },
 372                 { 841000000, 166667, 0xf4, 0x08 },
 373                 { 999999999, 166667, 0xfc, 0x02 },
 374         }
 375 };
 376 EXPORT_SYMBOL(dvb_pll_samsung_tbmv);
 377
 378 /*
 379  * Philips SD1878 Tuner.
 380  */
 381 struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
 382         .name  = "Philips SD1878",
 383         .min   =  950000,
 384         .max   = 2150000,
 385         .iffreq= 249, /* zero-IF, offset 249 is to round up */
 386         .count = 4,
 387         .entries = {
 388                 { 1250000, 500, 0xc4, 0x00},
 389                 { 1550000, 500, 0xc4, 0x40},
 390                 { 2050000, 500, 0xc4, 0x80},
 391                 { 2150000, 500, 0xc4, 0xc0},
 392         },
 393 };
 394 EXPORT_SYMBOL(dvb_pll_philips_sd1878_tda8261);
 395
 396 /*
 397  * Philips TD1316 Tuner.
 398  */
 399 static void td1316_bw(u8 *buf, u32 freq, int bandwidth)
 400 {
 401         u8 band;
 402
 403         /* determine band */
 404         if (freq < 161000000)
 405                 band = 1;
 406         else if (freq < 444000000)
 407                 band = 2;
 408         else
 409                 band = 4;
 410
 411         buf[3] |= band;
 412
 413         /* setup PLL filter */
 414         if (bandwidth == BANDWIDTH_8_MHZ)
 415                 buf[3] |= 1 << 3;
 416 }
 417
 418 struct dvb_pll_desc dvb_pll_philips_td1316 = {
 419         .name  = "Philips TD1316",
 420         .min   =  87000000,
 421         .max   = 895000000,
 422         .iffreq= 36166667,
 423         .setbw = td1316_bw,
 424         .count = 9,
 425         .entries = {
 426                 {  93834000, 166667, 0xca, 0x60},
 427                 { 123834000, 166667, 0xca, 0xa0},
 428                 { 163834000, 166667, 0xca, 0xc0},
 429                 { 253834000, 166667, 0xca, 0x60},
 430                 { 383834000, 166667, 0xca, 0xa0},
 431                 { 443834000, 166667, 0xca, 0xc0},
 432                 { 583834000, 166667, 0xca, 0x60},
 433                 { 793834000, 166667, 0xca, 0xa0},
 434                 { 858834000, 166667, 0xca, 0xe0},
 435         },
 436 };
 437 EXPORT_SYMBOL(dvb_pll_philips_td1316);
 438
 439 /* FE6600 used on DViCO Hybrid */
 440 struct dvb_pll_desc dvb_pll_thomson_fe6600 = {
 441         .name = "Thomson FE6600",
 442         .min =  44250000,
 443         .max = 858000000,
 444         .iffreq= 36125000,
 445         .count = 4,
 446         .entries = {
 447                 { 250000000, 166667, 0xb4, 0x12 },
 448                 { 455000000, 166667, 0xfe, 0x11 },
 449                 { 775500000, 166667, 0xbc, 0x18 },
 450                 { 999999999, 166667, 0xf4, 0x18 },
 451         }
 452 };
 453 EXPORT_SYMBOL(dvb_pll_thomson_fe6600);
 454 static void opera1_bw(u8 *buf, u32 freq, int bandwidth)
 455 {
 456         if (bandwidth == BANDWIDTH_8_MHZ)
 457                 buf[2] |= 0x08;
 458 }
 459
 460 struct dvb_pll_desc dvb_pll_opera1 = {
 461         .name  = "Opera Tuner",
 462         .min   =  900000,
 463         .max   = 2250000,
 464         .iffreq= 0,
 465         .setbw = opera1_bw,
 466         .count = 8,
 467         .entries = {
 468                 { 1064000, 500, 0xe5, 0xc6 },
 469                 { 1169000, 500, 0xe5, 0xe6 },
 470                 { 1299000, 500, 0xe5, 0x24 },
 471                 { 1444000, 500, 0xe5, 0x44 },
 472                 { 1606000, 500, 0xe5, 0x64 },
 473                 { 1777000, 500, 0xe5, 0x84 },
 474                 { 1941000, 500, 0xe5, 0xa4 },
 475                 { 2250000, 500, 0xe5, 0xc4 },
 476         }
 477 };
 478 EXPORT_SYMBOL(dvb_pll_opera1);
 479
 480 struct dvb_pll_priv {
 481         /* i2c details */
 482         int pll_i2c_address;
 483         struct i2c_adapter *i2c;
 484
 485         /* the PLL descriptor */
 486         struct dvb_pll_desc *pll_desc;
 487
 488         /* cached frequency/bandwidth */
 489         u32 frequency;
 490         u32 bandwidth;
 491 };
 492
 493 /* ----------------------------------------------------------- */
 494 /* code                                                        */
 495
 496 static int debug = 0;
 497 module_param(debug, int, 0644);
 498 MODULE_PARM_DESC(debug, "enable verbose debug messages");
 499
 500 int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
 501                       u32 freq, int bandwidth)
 502 {
 503         u32 div;
 504         int i;
 505
 506         if (freq != 0 && (freq < desc->min || freq > desc->max))
 507             return -EINVAL;
 508
 509         for (i = 0; i < desc->count; i++) {
 510                 if (freq > desc->entries[i].limit)
 511                         continue;
 512                 break;
 513         }
 514         if (debug)
 515                 printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
 516                        desc->name, freq, bandwidth, i, desc->count);
 517         if (i == desc->count)
 518                 return -EINVAL;
 519
 520         div = (freq + desc->iffreq + desc->entries[i].stepsize/2) /
 521               desc->entries[i].stepsize;
 522         buf[0] = div >> 8;
 523         buf[1] = div & 0xff;
 524         buf[2] = desc->entries[i].config;
 525         buf[3] = desc->entries[i].cb;
 526
 527         if (desc->setbw)
 528                 desc->setbw(buf, freq, bandwidth);
 529
 530         if (debug)
 531                 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
 532                        desc->name, div, buf[0], buf[1], buf[2], buf[3]);
 533
 534         // calculate the frequency we set it to
 535         return (div * desc->entries[i].stepsize) - desc->iffreq;
 536 }
 537 EXPORT_SYMBOL(dvb_pll_configure);
 538
 539 static int dvb_pll_release(struct dvb_frontend *fe)
 540 {
 541         kfree(fe->tuner_priv);
 542         fe->tuner_priv = NULL;
 543         return 0;
 544 }
 545
 546 static int dvb_pll_sleep(struct dvb_frontend *fe)
 547 {
 548         struct dvb_pll_priv *priv = fe->tuner_priv;
 549
 550         if (priv->i2c == NULL)
 551                 return -EINVAL;
 552
 553         if (priv->pll_desc->sleepdata) {
 554                 struct i2c_msg msg = { .flags = 0,
 555                         .addr = priv->pll_i2c_address,
 556                         .buf = priv->pll_desc->sleepdata + 1,
 557                         .len = priv->pll_desc->sleepdata[0] };
 558
 559                 int result;
 560
 561                 if (fe->ops.i2c_gate_ctrl)
 562                         fe->ops.i2c_gate_ctrl(fe, 1);
 563                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 564                         return result;
 565                 }
 566                 return 0;
 567         }
 568         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 569         return -EINVAL;
 570 }
 571
 572 static int dvb_pll_set_params(struct dvb_frontend *fe,
 573                               struct dvb_frontend_parameters *params)
 574 {
 575         struct dvb_pll_priv *priv = fe->tuner_priv;
 576         u8 buf[4];
 577         struct i2c_msg msg =
 578                 { .addr = priv->pll_i2c_address, .flags = 0,
 579                   .buf = buf, .len = sizeof(buf) };
 580         int result;
 581         u32 bandwidth = 0, frequency = 0;
 582
 583         if (priv->i2c == NULL)
 584                 return -EINVAL;
 585
 586         // DVBT bandwidth only just now
 587         if (fe->ops.info.type == FE_OFDM) {
 588                 bandwidth = params->u.ofdm.bandwidth;
 589         }
 590
 591         if ((result = dvb_pll_configure(priv->pll_desc, buf,
 592                                         params->frequency, bandwidth)) < 0)
 593                 return result;
 594         else
 595                 frequency = result;
 596
 597         if (fe->ops.i2c_gate_ctrl)
 598                 fe->ops.i2c_gate_ctrl(fe, 1);
 599         if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 600                 return result;
 601         }
 602
 603         priv->frequency = frequency;
 604         priv->bandwidth = bandwidth;
 605
 606         return 0;
 607 }
 608
 609 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
 610                              struct dvb_frontend_parameters *params,
 611                              u8 *buf, int buf_len)
 612 {
 613         struct dvb_pll_priv *priv = fe->tuner_priv;
 614         int result;
 615         u32 bandwidth = 0, frequency = 0;
 616
 617         if (buf_len < 5)
 618                 return -EINVAL;
 619
 620         // DVBT bandwidth only just now
 621         if (fe->ops.info.type == FE_OFDM) {
 622                 bandwidth = params->u.ofdm.bandwidth;
 623         }
 624
 625         if ((result = dvb_pll_configure(priv->pll_desc, buf+1,
 626                                         params->frequency, bandwidth)) < 0)
 627                 return result;
 628         else
 629                 frequency = result;
 630
 631         buf[0] = priv->pll_i2c_address;
 632
 633         priv->frequency = frequency;
 634         priv->bandwidth = bandwidth;
 635
 636         return 5;
 637 }
 638
 639 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 640 {
 641         struct dvb_pll_priv *priv = fe->tuner_priv;
 642         *frequency = priv->frequency;
 643         return 0;
 644 }
 645
 646 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 647 {
 648         struct dvb_pll_priv *priv = fe->tuner_priv;
 649         *bandwidth = priv->bandwidth;
 650         return 0;
 651 }
 652
 653 static int dvb_pll_init(struct dvb_frontend *fe)
 654 {
 655         struct dvb_pll_priv *priv = fe->tuner_priv;
 656
 657         if (priv->i2c == NULL)
 658                 return -EINVAL;
 659
 660         if (priv->pll_desc->initdata) {
 661                 struct i2c_msg msg = { .flags = 0,
 662                         .addr = priv->pll_i2c_address,
 663                         .buf = priv->pll_desc->initdata + 1,
 664                         .len = priv->pll_desc->initdata[0] };
 665
 666                 int result;
 667                 if (fe->ops.i2c_gate_ctrl)
 668                         fe->ops.i2c_gate_ctrl(fe, 1);
 669                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 670                         return result;
 671                 }
 672                 return 0;
 673         }
 674         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 675         return -EINVAL;
 676 }
 677
 678 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
 679         .release = dvb_pll_release,
 680         .sleep = dvb_pll_sleep,
 681         .init = dvb_pll_init,
 682         .set_params = dvb_pll_set_params,
 683         .calc_regs = dvb_pll_calc_regs,
 684         .get_frequency = dvb_pll_get_frequency,
 685         .get_bandwidth = dvb_pll_get_bandwidth,
 686 };
 687
 688 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
 689                                     struct i2c_adapter *i2c,
 690                                     struct dvb_pll_desc *desc)
 691 {
 692         u8 b1 [] = { 0 };
 693         struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
 694                                .buf = b1, .len = 1 };
 695         struct dvb_pll_priv *priv = NULL;
 696         int ret;
 697
 698         if (i2c != NULL) {
 699                 if (fe->ops.i2c_gate_ctrl)
 700                         fe->ops.i2c_gate_ctrl(fe, 1);
 701
 702                 ret = i2c_transfer (i2c, &msg, 1);
 703                 if (ret != 1)
 704                         return NULL;
 705                 if (fe->ops.i2c_gate_ctrl)
 706                              fe->ops.i2c_gate_ctrl(fe, 0);
 707         }
 708
 709         priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
 710         if (priv == NULL)
 711                 return NULL;
 712
 713         priv->pll_i2c_address = pll_addr;
 714         priv->i2c = i2c;
 715         priv->pll_desc = desc;
 716
 717         memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
 718                sizeof(struct dvb_tuner_ops));
 719
 720         strncpy(fe->ops.tuner_ops.info.name, desc->name,
 721                 sizeof(fe->ops.tuner_ops.info.name));
 722         fe->ops.tuner_ops.info.frequency_min = desc->min;
 723         fe->ops.tuner_ops.info.frequency_min = desc->max;
 724         if (!desc->initdata)
 725                 fe->ops.tuner_ops.init = NULL;
 726         if (!desc->sleepdata)
 727                 fe->ops.tuner_ops.sleep = NULL;
 728
 729         fe->tuner_priv = priv;
 730         return fe;
 731 }
 732 EXPORT_SYMBOL(dvb_pll_attach);
 733
 734 MODULE_DESCRIPTION("dvb pll library");
 735 MODULE_AUTHOR("Gerd Knorr");
 736 MODULE_LICENSE("GPL");