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/slab.h>
  22 #include <linux/module.h>
  23 #include <linux/dvb/frontend.h>
  24 #include <asm/types.h>
  25
  26 #include "dvb-pll.h"
  27
  28 struct dvb_pll_priv {
  29         /* pll number */
  30         int nr;
  31
  32         /* i2c details */
  33         int pll_i2c_address;
  34         struct i2c_adapter *i2c;
  35
  36         /* the PLL descriptor */
  37         struct dvb_pll_desc *pll_desc;
  38
  39         /* cached frequency/bandwidth */
  40         u32 frequency;
  41         u32 bandwidth;
  42 };
  43
  44 #define DVB_PLL_MAX 64
  45
  46 static unsigned int dvb_pll_devcount;
  47
  48 static int debug;
  49 module_param(debug, int, 0644);
  50 MODULE_PARM_DESC(debug, "enable verbose debug messages");
  51
  52 static unsigned int id[DVB_PLL_MAX] =
  53         { [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };
  54 module_param_array(id, int, NULL, 0644);
  55 MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");
  56
  57 /* ----------------------------------------------------------- */
  58
  59 struct dvb_pll_desc {
  60         char *name;
  61         u32  min;
  62         u32  max;
  63         u32  iffreq;
  64         void (*set)(struct dvb_frontend *fe, u8 *buf,
  65                     const struct dvb_frontend_parameters *params);
  66         u8   *initdata;
  67         u8   *sleepdata;
  68         int  count;
  69         struct {
  70                 u32 limit;
  71                 u32 stepsize;
  72                 u8  config;
  73                 u8  cb;
  74         } entries[12];
  75 };
  76
  77 /* ----------------------------------------------------------- */
  78 /* descriptions                                                */
  79
  80 static struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
  81         .name  = "Thomson dtt7579",
  82         .min   = 177000000,
  83         .max   = 858000000,
  84         .iffreq= 36166667,
  85         .sleepdata = (u8[]){ 2, 0xb4, 0x03 },
  86         .count = 4,
  87         .entries = {
  88                 {  443250000, 166667, 0xb4, 0x02 },
  89                 {  542000000, 166667, 0xb4, 0x08 },
  90                 {  771000000, 166667, 0xbc, 0x08 },
  91                 {  999999999, 166667, 0xf4, 0x08 },
  92         },
  93 };
  94
  95 static void thomson_dtt759x_bw(struct dvb_frontend *fe, u8 *buf,
  96                                const struct dvb_frontend_parameters *params)
  97 {
  98         if (BANDWIDTH_7_MHZ == params->u.ofdm.bandwidth)
  99                 buf[3] |= 0x10;
 100 }
 101
 102 static struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
 103         .name  = "Thomson dtt759x",
 104         .min   = 177000000,
 105         .max   = 896000000,
 106         .set   = thomson_dtt759x_bw,
 107         .iffreq= 36166667,
 108         .sleepdata = (u8[]){ 2, 0x84, 0x03 },
 109         .count = 5,
 110         .entries = {
 111                 {  264000000, 166667, 0xb4, 0x02 },
 112                 {  470000000, 166667, 0xbc, 0x02 },
 113                 {  735000000, 166667, 0xbc, 0x08 },
 114                 {  835000000, 166667, 0xf4, 0x08 },
 115                 {  999999999, 166667, 0xfc, 0x08 },
 116         },
 117 };
 118
 119 static struct dvb_pll_desc dvb_pll_lg_z201 = {
 120         .name  = "LG z201",
 121         .min   = 174000000,
 122         .max   = 862000000,
 123         .iffreq= 36166667,
 124         .sleepdata = (u8[]){ 2, 0xbc, 0x03 },
 125         .count = 5,
 126         .entries = {
 127                 {  157500000, 166667, 0xbc, 0x01 },
 128                 {  443250000, 166667, 0xbc, 0x02 },
 129                 {  542000000, 166667, 0xbc, 0x04 },
 130                 {  830000000, 166667, 0xf4, 0x04 },
 131                 {  999999999, 166667, 0xfc, 0x04 },
 132         },
 133 };
 134
 135 static struct dvb_pll_desc dvb_pll_unknown_1 = {
 136         .name  = "unknown 1", /* used by dntv live dvb-t */
 137         .min   = 174000000,
 138         .max   = 862000000,
 139         .iffreq= 36166667,
 140         .count = 9,
 141         .entries = {
 142                 {  150000000, 166667, 0xb4, 0x01 },
 143                 {  173000000, 166667, 0xbc, 0x01 },
 144                 {  250000000, 166667, 0xb4, 0x02 },
 145                 {  400000000, 166667, 0xbc, 0x02 },
 146                 {  420000000, 166667, 0xf4, 0x02 },
 147                 {  470000000, 166667, 0xfc, 0x02 },
 148                 {  600000000, 166667, 0xbc, 0x08 },
 149                 {  730000000, 166667, 0xf4, 0x08 },
 150                 {  999999999, 166667, 0xfc, 0x08 },
 151         },
 152 };
 153
 154 /* Infineon TUA6010XS
 155  * used in Thomson Cable Tuner
 156  */
 157 static struct dvb_pll_desc dvb_pll_tua6010xs = {
 158         .name  = "Infineon TUA6010XS",
 159         .min   =  44250000,
 160         .max   = 858000000,
 161         .iffreq= 36125000,
 162         .count = 3,
 163         .entries = {
 164                 {  115750000, 62500, 0x8e, 0x03 },
 165                 {  403250000, 62500, 0x8e, 0x06 },
 166                 {  999999999, 62500, 0x8e, 0x85 },
 167         },
 168 };
 169
 170 /* Panasonic env57h1xd5 (some Philips PLL ?) */
 171 static struct dvb_pll_desc dvb_pll_env57h1xd5 = {
 172         .name  = "Panasonic ENV57H1XD5",
 173         .min   =  44250000,
 174         .max   = 858000000,
 175         .iffreq= 36125000,
 176         .count = 4,
 177         .entries = {
 178                 {  153000000, 166667, 0xc2, 0x41 },
 179                 {  470000000, 166667, 0xc2, 0x42 },
 180                 {  526000000, 166667, 0xc2, 0x84 },
 181                 {  999999999, 166667, 0xc2, 0xa4 },
 182         },
 183 };
 184
 185 /* Philips TDA6650/TDA6651
 186  * used in Panasonic ENV77H11D5
 187  */
 188 static void tda665x_bw(struct dvb_frontend *fe, u8 *buf,
 189                        const struct dvb_frontend_parameters *params)
 190 {
 191         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 192                 buf[3] |= 0x08;
 193 }
 194
 195 static struct dvb_pll_desc dvb_pll_tda665x = {
 196         .name  = "Philips TDA6650/TDA6651",
 197         .min   =  44250000,
 198         .max   = 858000000,
 199         .set   = tda665x_bw,
 200         .iffreq= 36166667,
 201         .initdata = (u8[]){ 4, 0x0b, 0xf5, 0x85, 0xab },
 202         .count = 12,
 203         .entries = {
 204                 {   93834000, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
 205                 {  123834000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 206                 {  161000000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 207                 {  163834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 208                 {  253834000, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
 209                 {  383834000, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
 210                 {  443834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 211                 {  444000000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 212                 {  583834000, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
 213                 {  793834000, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
 214                 {  444834000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
 215                 {  861000000, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
 216         }
 217 };
 218
 219 /* Infineon TUA6034
 220  * used in LG TDTP E102P
 221  */
 222 static void tua6034_bw(struct dvb_frontend *fe, u8 *buf,
 223                        const struct dvb_frontend_parameters *params)
 224 {
 225         if (BANDWIDTH_7_MHZ != params->u.ofdm.bandwidth)
 226                 buf[3] |= 0x08;
 227 }
 228
 229 static struct dvb_pll_desc dvb_pll_tua6034 = {
 230         .name  = "Infineon TUA6034",
 231         .min   =  44250000,
 232         .max   = 858000000,
 233         .iffreq= 36166667,
 234         .count = 3,
 235         .set   = tua6034_bw,
 236         .entries = {
 237                 {  174500000, 62500, 0xce, 0x01 },
 238                 {  230000000, 62500, 0xce, 0x02 },
 239                 {  999999999, 62500, 0xce, 0x04 },
 240         },
 241 };
 242
 243 /* ALPS TDED4
 244  * used in Nebula-Cards and USB boxes
 245  */
 246 static void tded4_bw(struct dvb_frontend *fe, u8 *buf,
 247                      const struct dvb_frontend_parameters *params)
 248 {
 249         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 250                 buf[3] |= 0x04;
 251 }
 252
 253 static struct dvb_pll_desc dvb_pll_tded4 = {
 254         .name = "ALPS TDED4",
 255         .min = 47000000,
 256         .max = 863000000,
 257         .iffreq= 36166667,
 258         .set   = tded4_bw,
 259         .count = 4,
 260         .entries = {
 261                 { 153000000, 166667, 0x85, 0x01 },
 262                 { 470000000, 166667, 0x85, 0x02 },
 263                 { 823000000, 166667, 0x85, 0x08 },
 264                 { 999999999, 166667, 0x85, 0x88 },
 265         }
 266 };
 267
 268 /* ALPS TDHU2
 269  * used in AverTVHD MCE A180
 270  */
 271 static struct dvb_pll_desc dvb_pll_tdhu2 = {
 272         .name = "ALPS TDHU2",
 273         .min = 54000000,
 274         .max = 864000000,
 275         .iffreq= 44000000,
 276         .count = 4,
 277         .entries = {
 278                 { 162000000, 62500, 0x85, 0x01 },
 279                 { 426000000, 62500, 0x85, 0x02 },
 280                 { 782000000, 62500, 0x85, 0x08 },
 281                 { 999999999, 62500, 0x85, 0x88 },
 282         }
 283 };
 284
 285 /* Samsung TBMV30111IN / TBMV30712IN1
 286  * used in Air2PC ATSC - 2nd generation (nxt2002)
 287  */
 288 static struct dvb_pll_desc dvb_pll_samsung_tbmv = {
 289         .name = "Samsung TBMV30111IN / TBMV30712IN1",
 290         .min = 54000000,
 291         .max = 860000000,
 292         .iffreq= 44000000,
 293         .count = 6,
 294         .entries = {
 295                 { 172000000, 166667, 0xb4, 0x01 },
 296                 { 214000000, 166667, 0xb4, 0x02 },
 297                 { 467000000, 166667, 0xbc, 0x02 },
 298                 { 721000000, 166667, 0xbc, 0x08 },
 299                 { 841000000, 166667, 0xf4, 0x08 },
 300                 { 999999999, 166667, 0xfc, 0x02 },
 301         }
 302 };
 303
 304 /*
 305  * Philips SD1878 Tuner.
 306  */
 307 static struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
 308         .name  = "Philips SD1878",
 309         .min   =  950000,
 310         .max   = 2150000,
 311         .iffreq= 249, /* zero-IF, offset 249 is to round up */
 312         .count = 4,
 313         .entries = {
 314                 { 1250000, 500, 0xc4, 0x00},
 315                 { 1450000, 500, 0xc4, 0x40},
 316                 { 2050000, 500, 0xc4, 0x80},
 317                 { 2150000, 500, 0xc4, 0xc0},
 318         },
 319 };
 320
 321 static void opera1_bw(struct dvb_frontend *fe, u8 *buf,
 322                       const struct dvb_frontend_parameters *params)
 323 {
 324         if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
 325                 buf[2] |= 0x08;
 326 }
 327
 328 static struct dvb_pll_desc dvb_pll_opera1 = {
 329         .name  = "Opera Tuner",
 330         .min   =  900000,
 331         .max   = 2250000,
 332         .iffreq= 0,
 333         .set   = opera1_bw,
 334         .count = 8,
 335         .entries = {
 336                 { 1064000, 500, 0xe5, 0xc6 },
 337                 { 1169000, 500, 0xe5, 0xe6 },
 338                 { 1299000, 500, 0xe5, 0x24 },
 339                 { 1444000, 500, 0xe5, 0x44 },
 340                 { 1606000, 500, 0xe5, 0x64 },
 341                 { 1777000, 500, 0xe5, 0x84 },
 342                 { 1941000, 500, 0xe5, 0xa4 },
 343                 { 2250000, 500, 0xe5, 0xc4 },
 344         }
 345 };
 346
 347 static void samsung_dtos403ih102a_set(struct dvb_frontend *fe, u8 *buf,
 348                        const struct dvb_frontend_parameters *params)
 349 {
 350         struct dvb_pll_priv *priv = fe->tuner_priv;
 351         struct i2c_msg msg = {
 352                 .addr = priv->pll_i2c_address,
 353                 .flags = 0,
 354                 .buf = buf,
 355                 .len = 4
 356         };
 357         int result;
 358
 359         if (fe->ops.i2c_gate_ctrl)
 360                 fe->ops.i2c_gate_ctrl(fe, 1);
 361
 362         result = i2c_transfer(priv->i2c, &msg, 1);
 363         if (result != 1)
 364                 printk(KERN_ERR "%s: i2c_transfer failed:%d",
 365                         __func__, result);
 366
 367         buf[2] = 0x9e;
 368         buf[3] = 0x90;
 369
 370         return;
 371 }
 372
 373 /* unknown pll used in Samsung DTOS403IH102A DVB-C tuner */
 374 static struct dvb_pll_desc dvb_pll_samsung_dtos403ih102a = {
 375         .name   = "Samsung DTOS403IH102A",
 376         .min    =  44250000,
 377         .max    = 858000000,
 378         .iffreq =  36125000,
 379         .count  = 8,
 380         .set    = samsung_dtos403ih102a_set,
 381         .entries = {
 382                 { 135000000, 62500, 0xbe, 0x01 },
 383                 { 177000000, 62500, 0xf6, 0x01 },
 384                 { 370000000, 62500, 0xbe, 0x02 },
 385                 { 450000000, 62500, 0xf6, 0x02 },
 386                 { 466000000, 62500, 0xfe, 0x02 },
 387                 { 538000000, 62500, 0xbe, 0x08 },
 388                 { 826000000, 62500, 0xf6, 0x08 },
 389                 { 999999999, 62500, 0xfe, 0x08 },
 390         }
 391 };
 392
 393 /* Samsung TDTC9251DH0 DVB-T NIM, as used on AirStar 2 */
 394 static struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
 395         .name   = "Samsung TDTC9251DH0",
 396         .min    =  48000000,
 397         .max    = 863000000,
 398         .iffreq =  36166667,
 399         .count  = 3,
 400         .entries = {
 401                 { 157500000, 166667, 0xcc, 0x09 },
 402                 { 443000000, 166667, 0xcc, 0x0a },
 403                 { 863000000, 166667, 0xcc, 0x08 },
 404         }
 405 };
 406
 407 /* Samsung TBDU18132 DVB-S NIM with TSA5059 PLL, used in SkyStar2 DVB-S 2.3 */
 408 static struct dvb_pll_desc dvb_pll_samsung_tbdu18132 = {
 409         .name = "Samsung TBDU18132",
 410         .min    =  950000,
 411         .max    = 2150000, /* guesses */
 412         .iffreq = 0,
 413         .count = 2,
 414         .entries = {
 415                 { 1550000, 125, 0x84, 0x82 },
 416                 { 4095937, 125, 0x84, 0x80 },
 417         }
 418         /* TSA5059 PLL has a 17 bit divisor rather than the 15 bits supported
 419          * by this driver.  The two extra bits are 0x60 in the third byte.  15
 420          * bits is enough for over 4 GHz, which is enough to cover the range
 421          * of this tuner.  We could use the additional divisor bits by adding
 422          * more entries, e.g.
 423          { 0x0ffff * 125 + 125/2, 125, 0x84 | 0x20, },
 424          { 0x17fff * 125 + 125/2, 125, 0x84 | 0x40, },
 425          { 0x1ffff * 125 + 125/2, 125, 0x84 | 0x60, }, */
 426 };
 427
 428 /* Samsung TBMU24112 DVB-S NIM with SL1935 zero-IF tuner */
 429 static struct dvb_pll_desc dvb_pll_samsung_tbmu24112 = {
 430         .name = "Samsung TBMU24112",
 431         .min    =  950000,
 432         .max    = 2150000, /* guesses */
 433         .iffreq = 0,
 434         .count = 2,
 435         .entries = {
 436                 { 1500000, 125, 0x84, 0x18 },
 437                 { 9999999, 125, 0x84, 0x08 },
 438         }
 439 };
 440
 441 /* Alps TDEE4 DVB-C NIM, used on Cablestar 2 */
 442 /* byte 4 : 1  *   *   AGD R3  R2  R1  R0
 443  * byte 5 : C1 *   RE  RTS BS4 BS3 BS2 BS1
 444  * AGD = 1, R3 R2 R1 R0 = 0 1 0 1 => byte 4 = 1**10101 = 0x95
 445  * Range(MHz)  C1 *  RE RTS BS4 BS3 BS2 BS1  Byte 5
 446  *  47 - 153   0  *  0   0   0   0   0   1   0x01
 447  * 153 - 430   0  *  0   0   0   0   1   0   0x02
 448  * 430 - 822   0  *  0   0   1   0   0   0   0x08
 449  * 822 - 862   1  *  0   0   1   0   0   0   0x88 */
 450 static struct dvb_pll_desc dvb_pll_alps_tdee4 = {
 451         .name = "ALPS TDEE4",
 452         .min    =  47000000,
 453         .max    = 862000000,
 454         .iffreq =  36125000,
 455         .count = 4,
 456         .entries = {
 457                 { 153000000, 62500, 0x95, 0x01 },
 458                 { 430000000, 62500, 0x95, 0x02 },
 459                 { 822000000, 62500, 0x95, 0x08 },
 460                 { 999999999, 62500, 0x95, 0x88 },
 461         }
 462 };
 463
 464 /* ----------------------------------------------------------- */
 465
 466 static struct dvb_pll_desc *pll_list[] = {
 467         [DVB_PLL_UNDEFINED]              = NULL,
 468         [DVB_PLL_THOMSON_DTT7579]        = &dvb_pll_thomson_dtt7579,
 469         [DVB_PLL_THOMSON_DTT759X]        = &dvb_pll_thomson_dtt759x,
 470         [DVB_PLL_LG_Z201]                = &dvb_pll_lg_z201,
 471         [DVB_PLL_UNKNOWN_1]              = &dvb_pll_unknown_1,
 472         [DVB_PLL_TUA6010XS]              = &dvb_pll_tua6010xs,
 473         [DVB_PLL_ENV57H1XD5]             = &dvb_pll_env57h1xd5,
 474         [DVB_PLL_TUA6034]                = &dvb_pll_tua6034,
 475         [DVB_PLL_TDA665X]                = &dvb_pll_tda665x,
 476         [DVB_PLL_TDED4]                  = &dvb_pll_tded4,
 477         [DVB_PLL_TDEE4]                  = &dvb_pll_alps_tdee4,
 478         [DVB_PLL_TDHU2]                  = &dvb_pll_tdhu2,
 479         [DVB_PLL_SAMSUNG_TBMV]           = &dvb_pll_samsung_tbmv,
 480         [DVB_PLL_PHILIPS_SD1878_TDA8261] = &dvb_pll_philips_sd1878_tda8261,
 481         [DVB_PLL_OPERA1]                 = &dvb_pll_opera1,
 482         [DVB_PLL_SAMSUNG_DTOS403IH102A]  = &dvb_pll_samsung_dtos403ih102a,
 483         [DVB_PLL_SAMSUNG_TDTC9251DH0]    = &dvb_pll_samsung_tdtc9251dh0,
 484         [DVB_PLL_SAMSUNG_TBDU18132]      = &dvb_pll_samsung_tbdu18132,
 485         [DVB_PLL_SAMSUNG_TBMU24112]      = &dvb_pll_samsung_tbmu24112,
 486 };
 487
 488 /* ----------------------------------------------------------- */
 489 /* code                                                        */
 490
 491 static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
 492                              const struct dvb_frontend_parameters *params)
 493 {
 494         struct dvb_pll_priv *priv = fe->tuner_priv;
 495         struct dvb_pll_desc *desc = priv->pll_desc;
 496         u32 div;
 497         int i;
 498
 499         if (params->frequency != 0 && (params->frequency < desc->min ||
 500                                        params->frequency > desc->max))
 501                 return -EINVAL;
 502
 503         for (i = 0; i < desc->count; i++) {
 504                 if (params->frequency > desc->entries[i].limit)
 505                         continue;
 506                 break;
 507         }
 508
 509         if (debug)
 510                 printk("pll: %s: freq=%d | i=%d/%d\n", desc->name,
 511                        params->frequency, i, desc->count);
 512         if (i == desc->count)
 513                 return -EINVAL;
 514
 515         div = (params->frequency + desc->iffreq +
 516                desc->entries[i].stepsize/2) / desc->entries[i].stepsize;
 517         buf[0] = div >> 8;
 518         buf[1] = div & 0xff;
 519         buf[2] = desc->entries[i].config;
 520         buf[3] = desc->entries[i].cb;
 521
 522         if (desc->set)
 523                 desc->set(fe, buf, params);
 524
 525         if (debug)
 526                 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
 527                        desc->name, div, buf[0], buf[1], buf[2], buf[3]);
 528
 529         // calculate the frequency we set it to
 530         return (div * desc->entries[i].stepsize) - desc->iffreq;
 531 }
 532
 533 static int dvb_pll_release(struct dvb_frontend *fe)
 534 {
 535         kfree(fe->tuner_priv);
 536         fe->tuner_priv = NULL;
 537         return 0;
 538 }
 539
 540 static int dvb_pll_sleep(struct dvb_frontend *fe)
 541 {
 542         struct dvb_pll_priv *priv = fe->tuner_priv;
 543
 544         if (priv->i2c == NULL)
 545                 return -EINVAL;
 546
 547         if (priv->pll_desc->sleepdata) {
 548                 struct i2c_msg msg = { .flags = 0,
 549                         .addr = priv->pll_i2c_address,
 550                         .buf = priv->pll_desc->sleepdata + 1,
 551                         .len = priv->pll_desc->sleepdata[0] };
 552
 553                 int result;
 554
 555                 if (fe->ops.i2c_gate_ctrl)
 556                         fe->ops.i2c_gate_ctrl(fe, 1);
 557                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 558                         return result;
 559                 }
 560                 return 0;
 561         }
 562         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 563         return -EINVAL;
 564 }
 565
 566 static int dvb_pll_set_params(struct dvb_frontend *fe,
 567                               struct dvb_frontend_parameters *params)
 568 {
 569         struct dvb_pll_priv *priv = fe->tuner_priv;
 570         u8 buf[4];
 571         struct i2c_msg msg =
 572                 { .addr = priv->pll_i2c_address, .flags = 0,
 573                   .buf = buf, .len = sizeof(buf) };
 574         int result;
 575         u32 frequency = 0;
 576
 577         if (priv->i2c == NULL)
 578                 return -EINVAL;
 579
 580         if ((result = dvb_pll_configure(fe, buf, params)) < 0)
 581                 return result;
 582         else
 583                 frequency = result;
 584
 585         if (fe->ops.i2c_gate_ctrl)
 586                 fe->ops.i2c_gate_ctrl(fe, 1);
 587         if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 588                 return result;
 589         }
 590
 591         priv->frequency = frequency;
 592         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
 593
 594         return 0;
 595 }
 596
 597 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
 598                              struct dvb_frontend_parameters *params,
 599                              u8 *buf, int buf_len)
 600 {
 601         struct dvb_pll_priv *priv = fe->tuner_priv;
 602         int result;
 603         u32 frequency = 0;
 604
 605         if (buf_len < 5)
 606                 return -EINVAL;
 607
 608         if ((result = dvb_pll_configure(fe, buf+1, params)) < 0)
 609                 return result;
 610         else
 611                 frequency = result;
 612
 613         buf[0] = priv->pll_i2c_address;
 614
 615         priv->frequency = frequency;
 616         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
 617
 618         return 5;
 619 }
 620
 621 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 622 {
 623         struct dvb_pll_priv *priv = fe->tuner_priv;
 624         *frequency = priv->frequency;
 625         return 0;
 626 }
 627
 628 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 629 {
 630         struct dvb_pll_priv *priv = fe->tuner_priv;
 631         *bandwidth = priv->bandwidth;
 632         return 0;
 633 }
 634
 635 static int dvb_pll_init(struct dvb_frontend *fe)
 636 {
 637         struct dvb_pll_priv *priv = fe->tuner_priv;
 638
 639         if (priv->i2c == NULL)
 640                 return -EINVAL;
 641
 642         if (priv->pll_desc->initdata) {
 643                 struct i2c_msg msg = { .flags = 0,
 644                         .addr = priv->pll_i2c_address,
 645                         .buf = priv->pll_desc->initdata + 1,
 646                         .len = priv->pll_desc->initdata[0] };
 647
 648                 int result;
 649                 if (fe->ops.i2c_gate_ctrl)
 650                         fe->ops.i2c_gate_ctrl(fe, 1);
 651                 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
 652                         return result;
 653                 }
 654                 return 0;
 655         }
 656         /* Shouldn't be called when initdata is NULL, maybe BUG()? */
 657         return -EINVAL;
 658 }
 659
 660 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
 661         .release = dvb_pll_release,
 662         .sleep = dvb_pll_sleep,
 663         .init = dvb_pll_init,
 664         .set_params = dvb_pll_set_params,
 665         .calc_regs = dvb_pll_calc_regs,
 666         .get_frequency = dvb_pll_get_frequency,
 667         .get_bandwidth = dvb_pll_get_bandwidth,
 668 };
 669
 670 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
 671                                     struct i2c_adapter *i2c,
 672                                     unsigned int pll_desc_id)
 673 {
 674         u8 b1 [] = { 0 };
 675         struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
 676                                .buf = b1, .len = 1 };
 677         struct dvb_pll_priv *priv = NULL;
 678         int ret;
 679         struct dvb_pll_desc *desc;
 680
 681         if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&
 682             (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))
 683                 pll_desc_id = id[dvb_pll_devcount];
 684
 685         BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));
 686
 687         desc = pll_list[pll_desc_id];
 688
 689         if (i2c != NULL) {
 690                 if (fe->ops.i2c_gate_ctrl)
 691                         fe->ops.i2c_gate_ctrl(fe, 1);
 692
 693                 ret = i2c_transfer (i2c, &msg, 1);
 694                 if (ret != 1)
 695                         return NULL;
 696                 if (fe->ops.i2c_gate_ctrl)
 697                              fe->ops.i2c_gate_ctrl(fe, 0);
 698         }
 699
 700         priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
 701         if (priv == NULL)
 702                 return NULL;
 703
 704         priv->pll_i2c_address = pll_addr;
 705         priv->i2c = i2c;
 706         priv->pll_desc = desc;
 707         priv->nr = dvb_pll_devcount++;
 708
 709         memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
 710                sizeof(struct dvb_tuner_ops));
 711
 712         strncpy(fe->ops.tuner_ops.info.name, desc->name,
 713                 sizeof(fe->ops.tuner_ops.info.name));
 714         fe->ops.tuner_ops.info.frequency_min = desc->min;
 715         fe->ops.tuner_ops.info.frequency_max = desc->max;
 716         if (!desc->initdata)
 717                 fe->ops.tuner_ops.init = NULL;
 718         if (!desc->sleepdata)
 719                 fe->ops.tuner_ops.sleep = NULL;
 720
 721         fe->tuner_priv = priv;
 722
 723         if ((debug) || (id[priv->nr] == pll_desc_id)) {
 724                 printk("dvb-pll[%d]", priv->nr);
 725                 if (i2c != NULL)
 726                         printk(" %d-%04x", i2c_adapter_id(i2c), pll_addr);
 727                 printk(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,
 728                        id[priv->nr] == pll_desc_id ?
 729                                 "insmod option" : "autodetected");
 730         }
 731
 732         return fe;
 733 }
 734 EXPORT_SYMBOL(dvb_pll_attach);
 735
 736 MODULE_DESCRIPTION("dvb pll library");
 737 MODULE_AUTHOR("Gerd Knorr");
 738 MODULE_LICENSE("GPL");