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         .count = 5,
  46         .entries = {
  47                 {          0, 36166667, 166666, 0xb4, 0x03 }, /* go sleep */
  48                 {  443250000, 36166667, 166666, 0xb4, 0x02 },
  49                 {  542000000, 36166667, 166666, 0xb4, 0x08 },
  50                 {  771000000, 36166667, 166666, 0xbc, 0x08 },
  51                 {  999999999, 36166667, 166666, 0xf4, 0x08 },
  52         },
  53 };
  54 EXPORT_SYMBOL(dvb_pll_thomson_dtt7579);
  55
  56 struct dvb_pll_desc dvb_pll_thomson_dtt7610 = {
  57         .name  = "Thomson dtt7610",
  58         .min   =  44000000,
  59         .max   = 958000000,
  60         .count = 3,
  61         .entries = {
  62                 { 157250000, 44000000, 62500, 0x8e, 0x39 },
  63                 { 454000000, 44000000, 62500, 0x8e, 0x3a },
  64                 { 999999999, 44000000, 62500, 0x8e, 0x3c },
  65         },
  66 };
  67 EXPORT_SYMBOL(dvb_pll_thomson_dtt7610);
  68
  69 static void thomson_dtt759x_bw(u8 *buf, u32 freq, int bandwidth)
  70 {
  71         if (BANDWIDTH_7_MHZ == bandwidth)
  72                 buf[3] |= 0x10;
  73 }
  74
  75 struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
  76         .name  = "Thomson dtt759x",
  77         .min   = 177000000,
  78         .max   = 896000000,
  79         .setbw = thomson_dtt759x_bw,
  80         .count = 6,
  81         .entries = {
  82                 {          0, 36166667, 166666, 0x84, 0x03 },
  83                 {  264000000, 36166667, 166666, 0xb4, 0x02 },
  84                 {  470000000, 36166667, 166666, 0xbc, 0x02 },
  85                 {  735000000, 36166667, 166666, 0xbc, 0x08 },
  86                 {  835000000, 36166667, 166666, 0xf4, 0x08 },
  87                 {  999999999, 36166667, 166666, 0xfc, 0x08 },
  88         },
  89 };
  90 EXPORT_SYMBOL(dvb_pll_thomson_dtt759x);
  91
  92 struct dvb_pll_desc dvb_pll_lg_z201 = {
  93         .name  = "LG z201",
  94         .min   = 174000000,
  95         .max   = 862000000,
  96         .count = 6,
  97         .entries = {
  98                 {          0, 36166667, 166666, 0xbc, 0x03 },
  99                 {  157500000, 36166667, 166666, 0xbc, 0x01 },
 100                 {  443250000, 36166667, 166666, 0xbc, 0x02 },
 101                 {  542000000, 36166667, 166666, 0xbc, 0x04 },
 102                 {  830000000, 36166667, 166666, 0xf4, 0x04 },
 103                 {  999999999, 36166667, 166666, 0xfc, 0x04 },
 104         },
 105 };
 106 EXPORT_SYMBOL(dvb_pll_lg_z201);
 107
 108 struct dvb_pll_desc dvb_pll_microtune_4042 = {
 109         .name  = "Microtune 4042 FI5",
 110         .min   =  57000000,
 111         .max   = 858000000,
 112         .count = 3,
 113         .entries = {
 114                 { 162000000, 44000000, 62500, 0x8e, 0xa1 },
 115                 { 457000000, 44000000, 62500, 0x8e, 0x91 },
 116                 { 999999999, 44000000, 62500, 0x8e, 0x31 },
 117         },
 118 };
 119 EXPORT_SYMBOL(dvb_pll_microtune_4042);
 120
 121 struct dvb_pll_desc dvb_pll_thomson_dtt761x = {
 122         /* DTT 7611 7611A 7612 7613 7613A 7614 7615 7615A */
 123         .name  = "Thomson dtt761x",
 124         .min   =  57000000,
 125         .max   = 863000000,
 126         .count = 3,
 127         .initdata = tua603x_agc103,
 128         .entries = {
 129                 { 147000000, 44000000, 62500, 0x8e, 0x39 },
 130                 { 417000000, 44000000, 62500, 0x8e, 0x3a },
 131                 { 999999999, 44000000, 62500, 0x8e, 0x3c },
 132         },
 133 };
 134 EXPORT_SYMBOL(dvb_pll_thomson_dtt761x);
 135
 136 struct dvb_pll_desc dvb_pll_unknown_1 = {
 137         .name  = "unknown 1", /* used by dntv live dvb-t */
 138         .min   = 174000000,
 139         .max   = 862000000,
 140         .count = 9,
 141         .entries = {
 142                 {  150000000, 36166667, 166666, 0xb4, 0x01 },
 143                 {  173000000, 36166667, 166666, 0xbc, 0x01 },
 144                 {  250000000, 36166667, 166666, 0xb4, 0x02 },
 145                 {  400000000, 36166667, 166666, 0xbc, 0x02 },
 146                 {  420000000, 36166667, 166666, 0xf4, 0x02 },
 147                 {  470000000, 36166667, 166666, 0xfc, 0x02 },
 148                 {  600000000, 36166667, 166666, 0xbc, 0x08 },
 149                 {  730000000, 36166667, 166666, 0xf4, 0x08 },
 150                 {  999999999, 36166667, 166666, 0xfc, 0x08 },
 151         },
 152 };
 153 EXPORT_SYMBOL(dvb_pll_unknown_1);
 154
 155 /* Infineon TUA6010XS
 156  * used in Thomson Cable Tuner
 157  */
 158 struct dvb_pll_desc dvb_pll_tua6010xs = {
 159         .name  = "Infineon TUA6010XS",
 160         .min   =  44250000,
 161         .max   = 858000000,
 162         .count = 3,
 163         .entries = {
 164                 {  115750000, 36125000, 62500, 0x8e, 0x03 },
 165                 {  403250000, 36125000, 62500, 0x8e, 0x06 },
 166                 {  999999999, 36125000, 62500, 0x8e, 0x85 },
 167         },
 168 };
 169 EXPORT_SYMBOL(dvb_pll_tua6010xs);
 170
 171 /* Panasonic env57h1xd5 (some Philips PLL ?) */
 172 struct dvb_pll_desc dvb_pll_env57h1xd5 = {
 173         .name  = "Panasonic ENV57H1XD5",
 174         .min   =  44250000,
 175         .max   = 858000000,
 176         .count = 4,
 177         .entries = {
 178                 {  153000000, 36291666, 166666, 0xc2, 0x41 },
 179                 {  470000000, 36291666, 166666, 0xc2, 0x42 },
 180                 {  526000000, 36291666, 166666, 0xc2, 0x84 },
 181                 {  999999999, 36291666, 166666, 0xc2, 0xa4 },
 182         },
 183 };
 184 EXPORT_SYMBOL(dvb_pll_env57h1xd5);
 185
 186 /* Philips TDA6650/TDA6651
 187  * used in Panasonic ENV77H11D5
 188  */
 189 static void tda665x_bw(u8 *buf, u32 freq, int bandwidth)
 190 {
 191         if (bandwidth == BANDWIDTH_8_MHZ)
 192                 buf[3] |= 0x08;
 193 }
 194
 195 struct dvb_pll_desc dvb_pll_tda665x = {
 196         .name  = "Philips TDA6650/TDA6651",
 197         .min   =  44250000,
 198         .max   = 858000000,
 199         .setbw = tda665x_bw,
 200         .count = 12,
 201         .entries = {
 202                 {   93834000, 36249333, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
 203                 {  123834000, 36249333, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 204                 {  161000000, 36249333, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 205                 {  163834000, 36249333, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 206                 {  253834000, 36249333, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
 207                 {  383834000, 36249333, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
 208                 {  443834000, 36249333, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 209                 {  444000000, 36249333, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 210                 {  583834000, 36249333, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
 211                 {  793834000, 36249333, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
 212                 {  444834000, 36249333, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 213                 {  861000000, 36249333, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
 214         }
 215 };
 216 EXPORT_SYMBOL(dvb_pll_tda665x);
 217
 218 /* Infineon TUA6034
 219  * used in LG TDTP E102P
 220  */
 221 static void tua6034_bw(u8 *buf, u32 freq, int bandwidth)
 222 {
 223         if (BANDWIDTH_7_MHZ != bandwidth)
 224                 buf[3] |= 0x08;
 225 }
 226
 227 struct dvb_pll_desc dvb_pll_tua6034 = {
 228         .name  = "Infineon TUA6034",
 229         .min   =  44250000,
 230         .max   = 858000000,
 231         .count = 3,
 232         .setbw = tua6034_bw,
 233         .entries = {
 234                 {  174500000, 36166667, 62500, 0xce, 0x01 },
 235                 {  230000000, 36166667, 62500, 0xce, 0x02 },
 236                 {  999999999, 36166667, 62500, 0xce, 0x04 },
 237         },
 238 };
 239 EXPORT_SYMBOL(dvb_pll_tua6034);
 240
 241 /* Infineon TUA6034
 242  * used in LG TDVS-H061F, LG TDVS-H062F and LG TDVS-H064F
 243  */
 244 struct dvb_pll_desc dvb_pll_lg_tdvs_h06xf = {
 245         .name  = "LG TDVS-H06xF",
 246         .min   =  54000000,
 247         .max   = 863000000,
 248         .initdata = tua603x_agc103,
 249         .count = 3,
 250         .entries = {
 251                 {  165000000, 44000000, 62500, 0xce, 0x01 },
 252                 {  450000000, 44000000, 62500, 0xce, 0x02 },
 253                 {  999999999, 44000000, 62500, 0xce, 0x04 },
 254         },
 255 };
 256 EXPORT_SYMBOL(dvb_pll_lg_tdvs_h06xf);
 257
 258 /* Philips FMD1216ME
 259  * used in Medion Hybrid PCMCIA card and USB Box
 260  */
 261 static void fmd1216me_bw(u8 *buf, u32 freq, int bandwidth)
 262 {
 263         if (bandwidth == BANDWIDTH_8_MHZ && freq >= 158870000)
 264                 buf[3] |= 0x08;
 265 }
 266
 267 struct dvb_pll_desc dvb_pll_fmd1216me = {
 268         .name = "Philips FMD1216ME",
 269         .min = 50870000,
 270         .max = 858000000,
 271         .setbw = fmd1216me_bw,
 272         .count = 7,
 273         .entries = {
 274                 { 143870000, 36213333, 166667, 0xbc, 0x41 },
 275                 { 158870000, 36213333, 166667, 0xf4, 0x41 },
 276                 { 329870000, 36213333, 166667, 0xbc, 0x42 },
 277                 { 441870000, 36213333, 166667, 0xf4, 0x42 },
 278                 { 625870000, 36213333, 166667, 0xbc, 0x44 },
 279                 { 803870000, 36213333, 166667, 0xf4, 0x44 },
 280                 { 999999999, 36213333, 166667, 0xfc, 0x44 },
 281         }
 282 };
 283 EXPORT_SYMBOL(dvb_pll_fmd1216me);
 284
 285 /* ALPS TDED4
 286  * used in Nebula-Cards and USB boxes
 287  */
 288 static void tded4_bw(u8 *buf, u32 freq, int bandwidth)
 289 {
 290         if (bandwidth == BANDWIDTH_8_MHZ)
 291                 buf[3] |= 0x04;
 292 }
 293
 294 struct dvb_pll_desc dvb_pll_tded4 = {
 295         .name = "ALPS TDED4",
 296         .min = 47000000,
 297         .max = 863000000,
 298         .setbw = tded4_bw,
 299         .count = 4,
 300         .entries = {
 301                 { 153000000, 36166667, 166667, 0x85, 0x01 },
 302                 { 470000000, 36166667, 166667, 0x85, 0x02 },
 303                 { 823000000, 36166667, 166667, 0x85, 0x08 },
 304                 { 999999999, 36166667, 166667, 0x85, 0x88 },
 305         }
 306 };
 307 EXPORT_SYMBOL(dvb_pll_tded4);
 308
 309 /* ALPS TDHU2
 310  * used in AverTVHD MCE A180
 311  */
 312 struct dvb_pll_desc dvb_pll_tdhu2 = {
 313         .name = "ALPS TDHU2",
 314         .min = 54000000,
 315         .max = 864000000,
 316         .count = 4,
 317         .entries = {
 318                 { 162000000, 44000000, 62500, 0x85, 0x01 },
 319                 { 426000000, 44000000, 62500, 0x85, 0x02 },
 320                 { 782000000, 44000000, 62500, 0x85, 0x08 },
 321                 { 999999999, 44000000, 62500, 0x85, 0x88 },
 322         }
 323 };
 324 EXPORT_SYMBOL(dvb_pll_tdhu2);
 325
 326 /* Philips TUV1236D
 327  * used in ATI HDTV Wonder
 328  */
 329 struct dvb_pll_desc dvb_pll_tuv1236d = {
 330         .name  = "Philips TUV1236D",
 331         .min   =  54000000,
 332         .max   = 864000000,
 333         .count = 3,
 334         .entries = {
 335                 { 157250000, 44000000, 62500, 0xc6, 0x41 },
 336                 { 454000000, 44000000, 62500, 0xc6, 0x42 },
 337                 { 999999999, 44000000, 62500, 0xc6, 0x44 },
 338         },
 339 };
 340 EXPORT_SYMBOL(dvb_pll_tuv1236d);
 341
 342 /* Samsung TBMV30111IN / TBMV30712IN1
 343  * used in Air2PC ATSC - 2nd generation (nxt2002)
 344  */
 345 struct dvb_pll_desc dvb_pll_samsung_tbmv = {
 346         .name = "Samsung TBMV30111IN / TBMV30712IN1",
 347         .min = 54000000,
 348         .max = 860000000,
 349         .count = 6,
 350         .entries = {
 351                 { 172000000, 44000000, 166666, 0xb4, 0x01 },
 352                 { 214000000, 44000000, 166666, 0xb4, 0x02 },
 353                 { 467000000, 44000000, 166666, 0xbc, 0x02 },
 354                 { 721000000, 44000000, 166666, 0xbc, 0x08 },
 355                 { 841000000, 44000000, 166666, 0xf4, 0x08 },
 356                 { 999999999, 44000000, 166666, 0xfc, 0x02 },
 357         }
 358 };
 359 EXPORT_SYMBOL(dvb_pll_samsung_tbmv);
 360
 361 /*
 362  * Philips SD1878 Tuner.
 363  */
 364 struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
 365         .name  = "Philips SD1878",
 366         .min   =  950000,
 367         .max   = 2150000,
 368         .count = 4,
 369         .entries = {
 370                 { 1250000, 499, 500, 0xc4, 0x00},
 371                 { 1550000, 499, 500, 0xc4, 0x40},
 372                 { 2050000, 499, 500, 0xc4, 0x80},
 373                 { 2150000, 499, 500, 0xc4, 0xc0},
 374         },
 375 };
 376 EXPORT_SYMBOL(dvb_pll_philips_sd1878_tda8261);
 377
 378 /*
 379  * Philips TD1316 Tuner.
 380  */
 381 static void td1316_bw(u8 *buf, u32 freq, int bandwidth)
 382 {
 383         u8 band;
 384
 385         /* determine band */
 386         if (freq < 161000000)
 387                 band = 1;
 388         else if (freq < 444000000)
 389                 band = 2;
 390         else
 391                 band = 4;
 392
 393         buf[3] |= band;
 394
 395         /* setup PLL filter */
 396         if (bandwidth == BANDWIDTH_8_MHZ)
 397                 buf[3] |= 1 << 3;
 398 }
 399
 400 struct dvb_pll_desc dvb_pll_philips_td1316 = {
 401         .name  = "Philips TD1316",
 402         .min   =  87000000,
 403         .max   = 895000000,
 404         .setbw = td1316_bw,
 405         .count = 9,
 406         .entries = {
 407                 {  93834000, 36166000, 166666, 0xca, 0x60},
 408                 { 123834000, 36166000, 166666, 0xca, 0xa0},
 409                 { 163834000, 36166000, 166666, 0xca, 0xc0},
 410                 { 253834000, 36166000, 166666, 0xca, 0x60},
 411                 { 383834000, 36166000, 166666, 0xca, 0xa0},
 412                 { 443834000, 36166000, 166666, 0xca, 0xc0},
 413                 { 583834000, 36166000, 166666, 0xca, 0x60},
 414                 { 793834000, 36166000, 166666, 0xca, 0xa0},
 415                 { 858834000, 36166000, 166666, 0xca, 0xe0},
 416         },
 417 };
 418 EXPORT_SYMBOL(dvb_pll_philips_td1316);
 419
 420 /* FE6600 used on DViCO Hybrid */
 421 struct dvb_pll_desc dvb_pll_thomson_fe6600 = {
 422         .name = "Thomson FE6600",
 423         .min =  44250000,
 424         .max = 858000000,
 425         .count = 4,
 426         .entries = {
 427                 { 250000000, 36213333, 166667, 0xb4, 0x12 },
 428                 { 455000000, 36213333, 166667, 0xfe, 0x11 },
 429                 { 775500000, 36213333, 166667, 0xbc, 0x18 },
 430                 { 999999999, 36213333, 166667, 0xf4, 0x18 },
 431         }
 432 };
 433 EXPORT_SYMBOL(dvb_pll_thomson_fe6600);
 434
 435 struct dvb_pll_priv {
 436         /* i2c details */
 437         int pll_i2c_address;
 438         struct i2c_adapter *i2c;
 439
 440         /* the PLL descriptor */
 441         struct dvb_pll_desc *pll_desc;
 442
 443         /* cached frequency/bandwidth */
 444         u32 frequency;
 445         u32 bandwidth;
 446 };
 447
 448 /* ----------------------------------------------------------- */
 449 /* code                                                        */
 450
 451 static int debug = 0;
 452 module_param(debug, int, 0644);
 453 MODULE_PARM_DESC(debug, "enable verbose debug messages");
 454
 455 int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
 456                       u32 freq, int bandwidth)
 457 {
 458         u32 div;
 459         int i;
 460
 461         if (freq != 0 && (freq < desc->min || freq > desc->max))
 462             return -EINVAL;
 463
 464         for (i = 0; i < desc->count; i++) {
 465                 if (freq > desc->entries[i].limit)
 466                         continue;
 467                 break;
 468         }
 469         if (debug)
 470                 printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
 471                        desc->name, freq, bandwidth, i, desc->count);
 472         if (i == desc->count)
 473                 return -EINVAL;
 474
 475         div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize;
 476         buf[0] = div >> 8;
 477         buf[1] = div & 0xff;
 478         buf[2] = desc->entries[i].config;
 479         buf[3] = desc->entries[i].cb;
 480
 481         if (desc->setbw)
 482                 desc->setbw(buf, freq, bandwidth);
 483
 484         if (debug)
 485                 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
 486                        desc->name, div, buf[0], buf[1], buf[2], buf[3]);
 487
 488         // calculate the frequency we set it to
 489         return (div * desc->entries[i].stepsize) - desc->entries[i].offset;
 490 }
 491 EXPORT_SYMBOL(dvb_pll_configure);
 492
 493 static int dvb_pll_release(struct dvb_frontend *fe)
 494 {
 495         kfree(fe->tuner_priv);
 496         fe->tuner_priv = NULL;
 497         return 0;
 498 }
 499
 500 static int dvb_pll_sleep(struct dvb_frontend *fe)
 501 {
 502         struct dvb_pll_priv *priv = fe->tuner_priv;
 503         u8 buf[4];
 504         struct i2c_msg msg =
 505                 { .addr = priv->pll_i2c_address, .flags = 0,
 506                   .buf = buf, .len = sizeof(buf) };
 507         int i;
 508         int result;
 509
 510         if (priv->i2c == NULL)
 511                 return -EINVAL;
 512
 513         for (i = 0; i < priv->pll_desc->count; i++) {
 514                 if (priv->pll_desc->entries[i].limit == 0)
 515                         break;
 516         }
 517         if (i == priv->pll_desc->count)
 518                 return 0;
 519
 520         buf[0] = 0;
 521         buf[1] = 0;
 522         buf[2] = priv->pll_desc->entries[i].config;
 523         buf[3] = priv->pll_desc->entries[i].cb;
 524
 525         if (fe->ops.i2c_gate_ctrl)
 526                 fe->ops.i2c_gate_ctrl(fe, 1);
 527         if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 528                 return result;
 529         }
 530
 531         return 0;
 532 }
 533
 534 static int dvb_pll_set_params(struct dvb_frontend *fe,
 535                               struct dvb_frontend_parameters *params)
 536 {
 537         struct dvb_pll_priv *priv = fe->tuner_priv;
 538         u8 buf[4];
 539         struct i2c_msg msg =
 540                 { .addr = priv->pll_i2c_address, .flags = 0,
 541                   .buf = buf, .len = sizeof(buf) };
 542         int result;
 543         u32 bandwidth = 0, frequency = 0;
 544
 545         if (priv->i2c == NULL)
 546                 return -EINVAL;
 547
 548         // DVBT bandwidth only just now
 549         if (fe->ops.info.type == FE_OFDM) {
 550                 bandwidth = params->u.ofdm.bandwidth;
 551         }
 552
 553         if ((result = dvb_pll_configure(priv->pll_desc, buf,
 554                                         params->frequency, bandwidth)) < 0)
 555                 return result;
 556         else
 557                 frequency = result;
 558
 559         if (fe->ops.i2c_gate_ctrl)
 560                 fe->ops.i2c_gate_ctrl(fe, 1);
 561         if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 562                 return result;
 563         }
 564
 565         priv->frequency = frequency;
 566         priv->bandwidth = bandwidth;
 567
 568         return 0;
 569 }
 570
 571 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
 572                              struct dvb_frontend_parameters *params,
 573                              u8 *buf, int buf_len)
 574 {
 575         struct dvb_pll_priv *priv = fe->tuner_priv;
 576         int result;
 577         u32 bandwidth = 0, frequency = 0;
 578
 579         if (buf_len < 5)
 580                 return -EINVAL;
 581
 582         // DVBT bandwidth only just now
 583         if (fe->ops.info.type == FE_OFDM) {
 584                 bandwidth = params->u.ofdm.bandwidth;
 585         }
 586
 587         if ((result = dvb_pll_configure(priv->pll_desc, buf+1,
 588                                         params->frequency, bandwidth)) < 0)
 589                 return result;
 590         else
 591                 frequency = result;
 592
 593         buf[0] = priv->pll_i2c_address;
 594
 595         priv->frequency = frequency;
 596         priv->bandwidth = bandwidth;
 597
 598         return 5;
 599 }
 600
 601 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 602 {
 603         struct dvb_pll_priv *priv = fe->tuner_priv;
 604         *frequency = priv->frequency;
 605         return 0;
 606 }
 607
 608 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 609 {
 610         struct dvb_pll_priv *priv = fe->tuner_priv;
 611         *bandwidth = priv->bandwidth;
 612         return 0;
 613 }
 614
 615 static int dvb_pll_init(struct dvb_frontend *fe)
 616 {
 617         struct dvb_pll_priv *priv = fe->tuner_priv;
 618
 619         if (priv->i2c == NULL)
 620                 return -EINVAL;
 621
 622         if (priv->pll_desc->initdata) {
 623                 struct i2c_msg msg = { .flags = 0,
 624                         .addr = priv->pll_i2c_address,
 625                         .buf = priv->pll_desc->initdata + 1,
 626                         .len = priv->pll_desc->initdata[0] };
 627
 628                 int result;
 629                 if (fe->ops.i2c_gate_ctrl)
 630                         fe->ops.i2c_gate_ctrl(fe, 1);
 631                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 632                         return result;
 633                 }
 634                 return 0;
 635         }
 636         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 637         return -EINVAL;
 638 }
 639
 640 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
 641         .release = dvb_pll_release,
 642         .sleep = dvb_pll_sleep,
 643         .set_params = dvb_pll_set_params,
 644         .calc_regs = dvb_pll_calc_regs,
 645         .get_frequency = dvb_pll_get_frequency,
 646         .get_bandwidth = dvb_pll_get_bandwidth,
 647 };
 648
 649 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
 650                                     struct i2c_adapter *i2c,
 651                                     struct dvb_pll_desc *desc)
 652 {
 653         u8 b1 [] = { 0 };
 654         struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
 655                                .buf = b1, .len = 1 };
 656         struct dvb_pll_priv *priv = NULL;
 657         int ret;
 658
 659         if (i2c != NULL) {
 660                 if (fe->ops.i2c_gate_ctrl)
 661                         fe->ops.i2c_gate_ctrl(fe, 1);
 662
 663                 ret = i2c_transfer (i2c, &msg, 1);
 664                 if (ret != 1)
 665                         return NULL;
 666                 if (fe->ops.i2c_gate_ctrl)
 667                              fe->ops.i2c_gate_ctrl(fe, 0);
 668         }
 669
 670         priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
 671         if (priv == NULL)
 672                 return NULL;
 673
 674         priv->pll_i2c_address = pll_addr;
 675         priv->i2c = i2c;
 676         priv->pll_desc = desc;
 677
 678         memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
 679                sizeof(struct dvb_tuner_ops));
 680
 681         strncpy(fe->ops.tuner_ops.info.name, desc->name,
 682                 sizeof(fe->ops.tuner_ops.info.name));
 683         fe->ops.tuner_ops.info.frequency_min = desc->min;
 684         fe->ops.tuner_ops.info.frequency_min = desc->max;
 685         if (desc->initdata)
 686                 fe->ops.tuner_ops.init = dvb_pll_init;
 687
 688         fe->tuner_priv = priv;
 689         return fe;
 690 }
 691 EXPORT_SYMBOL(dvb_pll_attach);
 692
 693 MODULE_DESCRIPTION("dvb pll library");
 694 MODULE_AUTHOR("Gerd Knorr");
 695 MODULE_LICENSE("GPL");