Merge git://git.infradead.org/mtd-2.6
[linux-2.6] / 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");