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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / dvb / frontends / dvb-pll.c
blob1ab34838221c0b14d09bdfec5bb67bbce382bd1c
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 u8 *initdata;
66 u8 *initdata2;
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 {
97 u32 bw = fe->dtv_property_cache.bandwidth_hz;
98 if (bw == 7000000)
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 {
190 u32 bw = fe->dtv_property_cache.bandwidth_hz;
191 if (bw == 8000000)
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 {
224 u32 bw = fe->dtv_property_cache.bandwidth_hz;
225 if (bw == 7000000)
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 {
248 u32 bw = fe->dtv_property_cache.bandwidth_hz;
249 if (bw == 8000000)
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 {
323 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
324 struct dvb_pll_priv *priv = fe->tuner_priv;
325 u32 b_w = (c->symbol_rate * 27) / 32000;
326 struct i2c_msg msg = {
327 .addr = priv->pll_i2c_address,
328 .flags = 0,
329 .buf = buf,
330 .len = 4
331 };
332 int result;
333 u8 lpf;
334
335 if (fe->ops.i2c_gate_ctrl)
336 fe->ops.i2c_gate_ctrl(fe, 1);
337
338 result = i2c_transfer(priv->i2c, &msg, 1);
339 if (result != 1)
340 printk(KERN_ERR "%s: i2c_transfer failed:%d",
341 __func__, result);
342
343 if (b_w <= 10000)
344 lpf = 0xc;
345 else if (b_w <= 12000)
346 lpf = 0x2;
347 else if (b_w <= 14000)
348 lpf = 0xa;
349 else if (b_w <= 16000)
350 lpf = 0x6;
351 else if (b_w <= 18000)
352 lpf = 0xe;
353 else if (b_w <= 20000)
354 lpf = 0x1;
355 else if (b_w <= 22000)
356 lpf = 0x9;
357 else if (b_w <= 24000)
358 lpf = 0x5;
359 else if (b_w <= 26000)
360 lpf = 0xd;
361 else if (b_w <= 28000)
362 lpf = 0x3;
363 else
364 lpf = 0xb;
365 buf[2] ^= 0x1c; /* Flip bits 3-5 */
366 /* Set lpf */
367 buf[2] |= ((lpf >> 2) & 0x3) << 3;
368 buf[3] |= (lpf & 0x3) << 2;
369
370 return;
371 }
372
373 static struct dvb_pll_desc dvb_pll_opera1 = {
374 .name = "Opera Tuner",
375 .min = 900000,
376 .max = 2250000,
377 .initdata = (u8[]){ 4, 0x08, 0xe5, 0xe1, 0x00 },
378 .initdata2 = (u8[]){ 4, 0x08, 0xe5, 0xe5, 0x00 },
379 .iffreq= 0,
380 .set = opera1_bw,
381 .count = 8,
382 .entries = {
383 { 1064000, 500, 0xf9, 0xc2 },
384 { 1169000, 500, 0xf9, 0xe2 },
385 { 1299000, 500, 0xf9, 0x20 },
386 { 1444000, 500, 0xf9, 0x40 },
387 { 1606000, 500, 0xf9, 0x60 },
388 { 1777000, 500, 0xf9, 0x80 },
389 { 1941000, 500, 0xf9, 0xa0 },
390 { 2250000, 500, 0xf9, 0xc0 },
391 }
392 };
393
394 static void samsung_dtos403ih102a_set(struct dvb_frontend *fe, u8 *buf)
395 {
396 struct dvb_pll_priv *priv = fe->tuner_priv;
397 struct i2c_msg msg = {
398 .addr = priv->pll_i2c_address,
399 .flags = 0,
400 .buf = buf,
401 .len = 4
402 };
403 int result;
404
405 if (fe->ops.i2c_gate_ctrl)
406 fe->ops.i2c_gate_ctrl(fe, 1);
407
408 result = i2c_transfer(priv->i2c, &msg, 1);
409 if (result != 1)
410 printk(KERN_ERR "%s: i2c_transfer failed:%d",
411 __func__, result);
412
413 buf[2] = 0x9e;
414 buf[3] = 0x90;
415
416 return;
417 }
418
419 /* unknown pll used in Samsung DTOS403IH102A DVB-C tuner */
420 static struct dvb_pll_desc dvb_pll_samsung_dtos403ih102a = {
421 .name = "Samsung DTOS403IH102A",
422 .min = 44250000,
423 .max = 858000000,
424 .iffreq = 36125000,
425 .count = 8,
426 .set = samsung_dtos403ih102a_set,
427 .entries = {
428 { 135000000, 62500, 0xbe, 0x01 },
429 { 177000000, 62500, 0xf6, 0x01 },
430 { 370000000, 62500, 0xbe, 0x02 },
431 { 450000000, 62500, 0xf6, 0x02 },
432 { 466000000, 62500, 0xfe, 0x02 },
433 { 538000000, 62500, 0xbe, 0x08 },
434 { 826000000, 62500, 0xf6, 0x08 },
435 { 999999999, 62500, 0xfe, 0x08 },
436 }
437 };
438
439 /* Samsung TDTC9251DH0 DVB-T NIM, as used on AirStar 2 */
440 static struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
441 .name = "Samsung TDTC9251DH0",
442 .min = 48000000,
443 .max = 863000000,
444 .iffreq = 36166667,
445 .count = 3,
446 .entries = {
447 { 157500000, 166667, 0xcc, 0x09 },
448 { 443000000, 166667, 0xcc, 0x0a },
449 { 863000000, 166667, 0xcc, 0x08 },
450 }
451 };
452
453 /* Samsung TBDU18132 DVB-S NIM with TSA5059 PLL, used in SkyStar2 DVB-S 2.3 */
454 static struct dvb_pll_desc dvb_pll_samsung_tbdu18132 = {
455 .name = "Samsung TBDU18132",
456 .min = 950000,
457 .max = 2150000, /* guesses */
458 .iffreq = 0,
459 .count = 2,
460 .entries = {
461 { 1550000, 125, 0x84, 0x82 },
462 { 4095937, 125, 0x84, 0x80 },
463 }
464 /* TSA5059 PLL has a 17 bit divisor rather than the 15 bits supported
465 * by this driver. The two extra bits are 0x60 in the third byte. 15
466 * bits is enough for over 4 GHz, which is enough to cover the range
467 * of this tuner. We could use the additional divisor bits by adding
468 * more entries, e.g.
469 { 0x0ffff * 125 + 125/2, 125, 0x84 | 0x20, },
470 { 0x17fff * 125 + 125/2, 125, 0x84 | 0x40, },
471 { 0x1ffff * 125 + 125/2, 125, 0x84 | 0x60, }, */
472 };
473
474 /* Samsung TBMU24112 DVB-S NIM with SL1935 zero-IF tuner */
475 static struct dvb_pll_desc dvb_pll_samsung_tbmu24112 = {
476 .name = "Samsung TBMU24112",
477 .min = 950000,
478 .max = 2150000, /* guesses */
479 .iffreq = 0,
480 .count = 2,
481 .entries = {
482 { 1500000, 125, 0x84, 0x18 },
483 { 9999999, 125, 0x84, 0x08 },
484 }
485 };
486
487 /* Alps TDEE4 DVB-C NIM, used on Cablestar 2 */
488 /* byte 4 : 1 * * AGD R3 R2 R1 R0
489 * byte 5 : C1 * RE RTS BS4 BS3 BS2 BS1
490 * AGD = 1, R3 R2 R1 R0 = 0 1 0 1 => byte 4 = 1**10101 = 0x95
491 * Range(MHz) C1 * RE RTS BS4 BS3 BS2 BS1 Byte 5
492 * 47 - 153 0 * 0 0 0 0 0 1 0x01
493 * 153 - 430 0 * 0 0 0 0 1 0 0x02
494 * 430 - 822 0 * 0 0 1 0 0 0 0x08
495 * 822 - 862 1 * 0 0 1 0 0 0 0x88 */
496 static struct dvb_pll_desc dvb_pll_alps_tdee4 = {
497 .name = "ALPS TDEE4",
498 .min = 47000000,
499 .max = 862000000,
500 .iffreq = 36125000,
501 .count = 4,
502 .entries = {
503 { 153000000, 62500, 0x95, 0x01 },
504 { 430000000, 62500, 0x95, 0x02 },
505 { 822000000, 62500, 0x95, 0x08 },
506 { 999999999, 62500, 0x95, 0x88 },
507 }
508 };
509
510 /* ----------------------------------------------------------- */
511
512 static struct dvb_pll_desc *pll_list[] = {
513 [DVB_PLL_UNDEFINED] = NULL,
514 [DVB_PLL_THOMSON_DTT7579] = &dvb_pll_thomson_dtt7579,
515 [DVB_PLL_THOMSON_DTT759X] = &dvb_pll_thomson_dtt759x,
516 [DVB_PLL_LG_Z201] = &dvb_pll_lg_z201,
517 [DVB_PLL_UNKNOWN_1] = &dvb_pll_unknown_1,
518 [DVB_PLL_TUA6010XS] = &dvb_pll_tua6010xs,
519 [DVB_PLL_ENV57H1XD5] = &dvb_pll_env57h1xd5,
520 [DVB_PLL_TUA6034] = &dvb_pll_tua6034,
521 [DVB_PLL_TDA665X] = &dvb_pll_tda665x,
522 [DVB_PLL_TDED4] = &dvb_pll_tded4,
523 [DVB_PLL_TDEE4] = &dvb_pll_alps_tdee4,
524 [DVB_PLL_TDHU2] = &dvb_pll_tdhu2,
525 [DVB_PLL_SAMSUNG_TBMV] = &dvb_pll_samsung_tbmv,
526 [DVB_PLL_PHILIPS_SD1878_TDA8261] = &dvb_pll_philips_sd1878_tda8261,
527 [DVB_PLL_OPERA1] = &dvb_pll_opera1,
528 [DVB_PLL_SAMSUNG_DTOS403IH102A] = &dvb_pll_samsung_dtos403ih102a,
529 [DVB_PLL_SAMSUNG_TDTC9251DH0] = &dvb_pll_samsung_tdtc9251dh0,
530 [DVB_PLL_SAMSUNG_TBDU18132] = &dvb_pll_samsung_tbdu18132,
531 [DVB_PLL_SAMSUNG_TBMU24112] = &dvb_pll_samsung_tbmu24112,
532 };
533
534 /* ----------------------------------------------------------- */
535 /* code */
536
537 static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
538 const u32 frequency)
539 {
540 struct dvb_pll_priv *priv = fe->tuner_priv;
541 struct dvb_pll_desc *desc = priv->pll_desc;
542 u32 div;
543 int i;
544
545 if (frequency && (frequency < desc->min || frequency > desc->max))
546 return -EINVAL;
547
548 for (i = 0; i < desc->count; i++) {
549 if (frequency > desc->entries[i].limit)
550 continue;
551 break;
552 }
553
554 if (debug)
555 printk("pll: %s: freq=%d | i=%d/%d\n", desc->name,
556 frequency, i, desc->count);
557 if (i == desc->count)
558 return -EINVAL;
559
560 div = (frequency + desc->iffreq +
561 desc->entries[i].stepsize/2) / desc->entries[i].stepsize;
562 buf[0] = div >> 8;
563 buf[1] = div & 0xff;
564 buf[2] = desc->entries[i].config;
565 buf[3] = desc->entries[i].cb;
566
567 if (desc->set)
568 desc->set(fe, buf);
569
570 if (debug)
571 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
572 desc->name, div, buf[0], buf[1], buf[2], buf[3]);
573
574 // calculate the frequency we set it to
575 return (div * desc->entries[i].stepsize) - desc->iffreq;
576 }
577
578 static int dvb_pll_release(struct dvb_frontend *fe)
579 {
580 kfree(fe->tuner_priv);
581 fe->tuner_priv = NULL;
582 return 0;
583 }
584
585 static int dvb_pll_sleep(struct dvb_frontend *fe)
586 {
587 struct dvb_pll_priv *priv = fe->tuner_priv;
588
589 if (priv->i2c == NULL)
590 return -EINVAL;
591
592 if (priv->pll_desc->sleepdata) {
593 struct i2c_msg msg = { .flags = 0,
594 .addr = priv->pll_i2c_address,
595 .buf = priv->pll_desc->sleepdata + 1,
596 .len = priv->pll_desc->sleepdata[0] };
597
598 int result;
599
600 if (fe->ops.i2c_gate_ctrl)
601 fe->ops.i2c_gate_ctrl(fe, 1);
602 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
603 return result;
604 }
605 return 0;
606 }
607 /* Shouldn't be called when initdata is NULL, maybe BUG()? */
608 return -EINVAL;
609 }
610
611 static int dvb_pll_set_params(struct dvb_frontend *fe)
612 {
613 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
614 struct dvb_pll_priv *priv = fe->tuner_priv;
615 u8 buf[4];
616 struct i2c_msg msg =
617 { .addr = priv->pll_i2c_address, .flags = 0,
618 .buf = buf, .len = sizeof(buf) };
619 int result;
620 u32 frequency = 0;
621
622 if (priv->i2c == NULL)
623 return -EINVAL;
624
625 result = dvb_pll_configure(fe, buf, c->frequency);
626 if (result < 0)
627 return result;
628 else
629 frequency = result;
630
631 if (fe->ops.i2c_gate_ctrl)
632 fe->ops.i2c_gate_ctrl(fe, 1);
633 if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
634 return result;
635 }
636
637 priv->frequency = frequency;
638 priv->bandwidth = c->bandwidth_hz;
639
640 return 0;
641 }
642
643 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
644 u8 *buf, int buf_len)
645 {
646 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
647 struct dvb_pll_priv *priv = fe->tuner_priv;
648 int result;
649 u32 frequency = 0;
650
651 if (buf_len < 5)
652 return -EINVAL;
653
654 result = dvb_pll_configure(fe, buf + 1, c->frequency);
655 if (result < 0)
656 return result;
657 else
658 frequency = result;
659
660 buf[0] = priv->pll_i2c_address;
661
662 priv->frequency = frequency;
663 priv->bandwidth = c->bandwidth_hz;
664
665 return 5;
666 }
667
668 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
669 {
670 struct dvb_pll_priv *priv = fe->tuner_priv;
671 *frequency = priv->frequency;
672 return 0;
673 }
674
675 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
676 {
677 struct dvb_pll_priv *priv = fe->tuner_priv;
678 *bandwidth = priv->bandwidth;
679 return 0;
680 }
681
682 static int dvb_pll_init(struct dvb_frontend *fe)
683 {
684 struct dvb_pll_priv *priv = fe->tuner_priv;
685
686 if (priv->i2c == NULL)
687 return -EINVAL;
688
689 if (priv->pll_desc->initdata) {
690 struct i2c_msg msg = { .flags = 0,
691 .addr = priv->pll_i2c_address,
692 .buf = priv->pll_desc->initdata + 1,
693 .len = priv->pll_desc->initdata[0] };
694
695 int result;
696 if (fe->ops.i2c_gate_ctrl)
697 fe->ops.i2c_gate_ctrl(fe, 1);
698 result = i2c_transfer(priv->i2c, &msg, 1);
699 if (result != 1)
700 return result;
701 if (priv->pll_desc->initdata2) {
702 msg.buf = priv->pll_desc->initdata2 + 1;
703 msg.len = priv->pll_desc->initdata2[0];
704 if (fe->ops.i2c_gate_ctrl)
705 fe->ops.i2c_gate_ctrl(fe, 1);
706 result = i2c_transfer(priv->i2c, &msg, 1);
707 if (result != 1)
708 return result;
709 }
710 return 0;
711 }
712 /* Shouldn't be called when initdata is NULL, maybe BUG()? */
713 return -EINVAL;
714 }
715
716 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
717 .release = dvb_pll_release,
718 .sleep = dvb_pll_sleep,
719 .init = dvb_pll_init,
720 .set_params = dvb_pll_set_params,
721 .calc_regs = dvb_pll_calc_regs,
722 .get_frequency = dvb_pll_get_frequency,
723 .get_bandwidth = dvb_pll_get_bandwidth,
724 };
725
726 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
727 struct i2c_adapter *i2c,
728 unsigned int pll_desc_id)
729 {
730 u8 b1 [] = { 0 };
731 struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
732 .buf = b1, .len = 1 };
733 struct dvb_pll_priv *priv = NULL;
734 int ret;
735 struct dvb_pll_desc *desc;
736
737 if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&
738 (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))
739 pll_desc_id = id[dvb_pll_devcount];
740
741 BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));
742
743 desc = pll_list[pll_desc_id];
744
745 if (i2c != NULL) {
746 if (fe->ops.i2c_gate_ctrl)
747 fe->ops.i2c_gate_ctrl(fe, 1);
748
749 ret = i2c_transfer (i2c, &msg, 1);
750 if (ret != 1)
751 return NULL;
752 if (fe->ops.i2c_gate_ctrl)
753 fe->ops.i2c_gate_ctrl(fe, 0);
754 }
755
756 priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
757 if (priv == NULL)
758 return NULL;
759
760 priv->pll_i2c_address = pll_addr;
761 priv->i2c = i2c;
762 priv->pll_desc = desc;
763 priv->nr = dvb_pll_devcount++;
764
765 memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
766 sizeof(struct dvb_tuner_ops));
767
768 strncpy(fe->ops.tuner_ops.info.name, desc->name,
769 sizeof(fe->ops.tuner_ops.info.name));
770 fe->ops.tuner_ops.info.frequency_min = desc->min;
771 fe->ops.tuner_ops.info.frequency_max = desc->max;
772 if (!desc->initdata)
773 fe->ops.tuner_ops.init = NULL;
774 if (!desc->sleepdata)
775 fe->ops.tuner_ops.sleep = NULL;
776
777 fe->tuner_priv = priv;
778
779 if ((debug) || (id[priv->nr] == pll_desc_id)) {
780 printk("dvb-pll[%d]", priv->nr);
781 if (i2c != NULL)
782 printk(" %d-%04x", i2c_adapter_id(i2c), pll_addr);
783 printk(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,
784 id[priv->nr] == pll_desc_id ?
785 "insmod option" : "autodetected");
786 }
787
788 return fe;
789 }
790 EXPORT_SYMBOL(dvb_pll_attach);
791
792 MODULE_DESCRIPTION("dvb pll library");
793 MODULE_AUTHOR("Gerd Knorr");
794 MODULE_LICENSE("GPL");