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6320b64d3528f2583f322f373063903481ef2489
[deliverable/linux.git] / drivers / media / pci / saa7134 / saa7134-tvaudio.c
1 /*
2 *
3 * device driver for philips saa7134 based TV cards
4 * tv audio decoder (fm stereo, nicam, ...)
5 *
6 * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23 #include "saa7134.h"
24 #include "saa7134-reg.h"
25
26 #include <linux/init.h>
27 #include <linux/list.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/kthread.h>
31 #include <linux/delay.h>
32 #include <linux/freezer.h>
33 #include <asm/div64.h>
34
35 /* ------------------------------------------------------------------ */
36
37 static unsigned int audio_debug;
38 module_param(audio_debug, int, 0644);
39 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
40
41 static unsigned int audio_ddep;
42 module_param(audio_ddep, int, 0644);
43 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
44
45 static int audio_clock_override = UNSET;
46 module_param(audio_clock_override, int, 0644);
47
48 static int audio_clock_tweak;
49 module_param(audio_clock_tweak, int, 0644);
50 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
51
52 #define audio_dbg(level, fmt, arg...) if (audio_debug >= level) \
53 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg)
54
55 /* msecs */
56 #define SCAN_INITIAL_DELAY 1000
57 #define SCAN_SAMPLE_DELAY 200
58 #define SCAN_SUBCARRIER_DELAY 2000
59
60 /* ------------------------------------------------------------------ */
61 /* saa7134 code */
62
63 static struct mainscan {
64 char *name;
65 v4l2_std_id std;
66 int carr;
67 } mainscan[] = {
68 {
69 .name = "MN",
70 .std = V4L2_STD_MN,
71 .carr = 4500,
72 },{
73 .name = "BGH",
74 .std = V4L2_STD_B | V4L2_STD_GH,
75 .carr = 5500,
76 },{
77 .name = "I",
78 .std = V4L2_STD_PAL_I,
79 .carr = 6000,
80 },{
81 .name = "DKL",
82 .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
83 .carr = 6500,
84 }
85 };
86
87 static struct saa7134_tvaudio tvaudio[] = {
88 {
89 .name = "PAL-B/G FM-stereo",
90 .std = V4L2_STD_PAL_BG,
91 .mode = TVAUDIO_FM_BG_STEREO,
92 .carr1 = 5500,
93 .carr2 = 5742,
94 },{
95 .name = "PAL-D/K1 FM-stereo",
96 .std = V4L2_STD_PAL_DK,
97 .carr1 = 6500,
98 .carr2 = 6258,
99 .mode = TVAUDIO_FM_BG_STEREO,
100 },{
101 .name = "PAL-D/K2 FM-stereo",
102 .std = V4L2_STD_PAL_DK,
103 .carr1 = 6500,
104 .carr2 = 6742,
105 .mode = TVAUDIO_FM_BG_STEREO,
106 },{
107 .name = "PAL-D/K3 FM-stereo",
108 .std = V4L2_STD_PAL_DK,
109 .carr1 = 6500,
110 .carr2 = 5742,
111 .mode = TVAUDIO_FM_BG_STEREO,
112 },{
113 .name = "PAL-B/G NICAM",
114 .std = V4L2_STD_PAL_BG,
115 .carr1 = 5500,
116 .carr2 = 5850,
117 .mode = TVAUDIO_NICAM_FM,
118 },{
119 .name = "PAL-I NICAM",
120 .std = V4L2_STD_PAL_I,
121 .carr1 = 6000,
122 .carr2 = 6552,
123 .mode = TVAUDIO_NICAM_FM,
124 },{
125 .name = "PAL-D/K NICAM",
126 .std = V4L2_STD_PAL_DK,
127 .carr1 = 6500,
128 .carr2 = 5850,
129 .mode = TVAUDIO_NICAM_FM,
130 },{
131 .name = "SECAM-L NICAM",
132 .std = V4L2_STD_SECAM_L,
133 .carr1 = 6500,
134 .carr2 = 5850,
135 .mode = TVAUDIO_NICAM_AM,
136 },{
137 .name = "SECAM-D/K NICAM",
138 .std = V4L2_STD_SECAM_DK,
139 .carr1 = 6500,
140 .carr2 = 5850,
141 .mode = TVAUDIO_NICAM_FM,
142 },{
143 .name = "NTSC-A2 FM-stereo",
144 .std = V4L2_STD_NTSC,
145 .carr1 = 4500,
146 .carr2 = 4724,
147 .mode = TVAUDIO_FM_K_STEREO,
148 },{
149 .name = "NTSC-M",
150 .std = V4L2_STD_NTSC,
151 .carr1 = 4500,
152 .carr2 = -1,
153 .mode = TVAUDIO_FM_MONO,
154 }
155 };
156 #define TVAUDIO ARRAY_SIZE(tvaudio)
157
158 /* ------------------------------------------------------------------ */
159
160 static u32 tvaudio_carr2reg(u32 carrier)
161 {
162 u64 a = carrier;
163
164 a <<= 24;
165 do_div(a,12288);
166 return a;
167 }
168
169 static void tvaudio_setcarrier(struct saa7134_dev *dev,
170 int primary, int secondary)
171 {
172 if (-1 == secondary)
173 secondary = primary;
174 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
175 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
176 }
177
178 #define SAA7134_MUTE_MASK 0xbb
179 #define SAA7134_MUTE_ANALOG 0x04
180 #define SAA7134_MUTE_I2S 0x40
181
182 static void mute_input_7134(struct saa7134_dev *dev)
183 {
184 unsigned int mute;
185 struct saa7134_input *in;
186 int ausel=0, ics=0, ocs=0;
187 int mask;
188
189 /* look what is to do ... */
190 in = dev->input;
191 mute = (dev->ctl_mute ||
192 (dev->automute && (&card(dev).radio) != in));
193 if (card(dev).mute.name) {
194 /*
195 * 7130 - we'll mute using some unconnected audio input
196 * 7134 - we'll probably should switch external mux with gpio
197 */
198 if (mute)
199 in = &card(dev).mute;
200 }
201
202 if (dev->hw_mute == mute &&
203 dev->hw_input == in && !dev->insuspend) {
204 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
205 mute, in->name);
206 return;
207 }
208
209 audio_dbg(1, "ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
210 dev->ctl_mute, dev->automute,
211 dev->input->name, mute, in->name);
212 dev->hw_mute = mute;
213 dev->hw_input = in;
214
215 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
216 /* 7134 mute */
217 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
218 SAA7134_MUTE_MASK |
219 SAA7134_MUTE_ANALOG |
220 SAA7134_MUTE_I2S :
221 SAA7134_MUTE_MASK);
222
223 /* switch internal audio mux */
224 switch (in->amux) {
225 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
226 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
227 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
228 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
229 }
230 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
231 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
232 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
233 // for oss, we need to change the clock configuration
234 if (in->amux == TV)
235 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
236 else
237 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01);
238
239 /* switch gpio-connected external audio mux */
240 if (0 == card(dev).gpiomask)
241 return;
242
243 mask = card(dev).gpiomask;
244 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
245 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
246 saa7134_track_gpio(dev,in->name);
247 }
248
249 static void tvaudio_setmode(struct saa7134_dev *dev,
250 struct saa7134_tvaudio *audio,
251 char *note)
252 {
253 int acpf, tweak = 0;
254
255 if (dev->tvnorm->id == V4L2_STD_NTSC) {
256 acpf = 0x19066;
257 } else {
258 acpf = 0x1e000;
259 }
260 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
261 tweak = audio_clock_tweak;
262
263 if (note)
264 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
265 note, audio->name,
266 audio->carr1 / 1000, audio->carr1 % 1000,
267 audio->carr2 / 1000, audio->carr2 % 1000,
268 acpf, tweak);
269
270 acpf += tweak;
271 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
272 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
273 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
274 tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
275
276 switch (audio->mode) {
277 case TVAUDIO_FM_MONO:
278 case TVAUDIO_FM_BG_STEREO:
279 saa_writeb(SAA7134_DEMODULATOR, 0x00);
280 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
281 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
282 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
283 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
284 break;
285 case TVAUDIO_FM_K_STEREO:
286 saa_writeb(SAA7134_DEMODULATOR, 0x00);
287 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
288 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
289 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
290 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
291 break;
292 case TVAUDIO_NICAM_FM:
293 saa_writeb(SAA7134_DEMODULATOR, 0x10);
294 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
295 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
296 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
297 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
298 break;
299 case TVAUDIO_NICAM_AM:
300 saa_writeb(SAA7134_DEMODULATOR, 0x12);
301 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
302 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
303 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
304 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
305 break;
306 case TVAUDIO_FM_SAT_STEREO:
307 /* not implemented (yet) */
308 break;
309 }
310 }
311
312 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
313 {
314 if (dev->thread.scan1 == dev->thread.scan2 &&
315 !kthread_should_stop()) {
316 if (timeout < 0) {
317 set_current_state(TASK_INTERRUPTIBLE);
318 schedule();
319 } else {
320 schedule_timeout_interruptible
321 (msecs_to_jiffies(timeout));
322 }
323 }
324 return dev->thread.scan1 != dev->thread.scan2;
325 }
326
327 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
328 {
329 __s32 left,right,value;
330
331 if (!(dev->tvnorm->id & scan->std)) {
332 value = 0;
333 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
334 scan->carr / 1000, scan->carr % 1000, scan->name);
335 return 0;
336 }
337
338 if (audio_debug > 1) {
339 int i;
340 audio_dbg(1, "debug %d:", scan->carr);
341 for (i = -150; i <= 150; i += 30) {
342 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
343 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
344 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
345 return -1;
346 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
347 if (0 == i)
348 pr_cont(" # %6d # ",value >> 16);
349 else
350 pr_cont(" %6d",value >> 16);
351 }
352 pr_cont("\n");
353 }
354
355 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
356 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
357 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
358 return -1;
359 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
360
361 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
362 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
363 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
364 return -1;
365 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
366
367 left >>= 16;
368 right >>= 16;
369 value = left > right ? left - right : right - left;
370 audio_dbg(1, "scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
371 scan->carr / 1000, scan->carr % 1000,
372 scan->name, value, left, right);
373 return value;
374 }
375
376
377 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
378 {
379 __u32 idp, nicam, nicam_status;
380 int retval = -1;
381
382 switch (audio->mode) {
383 case TVAUDIO_FM_MONO:
384 return V4L2_TUNER_SUB_MONO;
385 case TVAUDIO_FM_K_STEREO:
386 case TVAUDIO_FM_BG_STEREO:
387 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
388 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
389 if (0x03 == (idp & 0x03))
390 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
391 else if (0x05 == (idp & 0x05))
392 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
393 else if (0x01 == (idp & 0x01))
394 retval = V4L2_TUNER_SUB_MONO;
395 break;
396 case TVAUDIO_FM_SAT_STEREO:
397 /* not implemented (yet) */
398 break;
399 case TVAUDIO_NICAM_FM:
400 case TVAUDIO_NICAM_AM:
401 nicam = saa_readb(SAA7134_AUDIO_STATUS);
402 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
403 if (nicam & 0x1) {
404 nicam_status = saa_readb(SAA7134_NICAM_STATUS);
405 audio_dbg(1, "getstereo: nicam_status=0x%x\n", nicam_status);
406
407 switch (nicam_status & 0x03) {
408 case 0x01:
409 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
410 break;
411 case 0x02:
412 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
413 break;
414 default:
415 retval = V4L2_TUNER_SUB_MONO;
416 }
417 } else {
418 /* No nicam detected */
419 }
420 break;
421 }
422 if (retval != -1)
423 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
424 (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "",
425 (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
426 (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "",
427 (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : "");
428 return retval;
429 }
430
431 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
432 u32 mode)
433 {
434 static char *name[] = {
435 [ V4L2_TUNER_MODE_MONO ] = "mono",
436 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
437 [ V4L2_TUNER_MODE_LANG1 ] = "lang1",
438 [ V4L2_TUNER_MODE_LANG2 ] = "lang2",
439 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2",
440 };
441 static u32 fm[] = {
442 [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */
443 [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */
444 [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */
445 [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */
446 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */
447 };
448 u32 reg;
449
450 switch (audio->mode) {
451 case TVAUDIO_FM_MONO:
452 /* nothing to do ... */
453 break;
454 case TVAUDIO_FM_K_STEREO:
455 case TVAUDIO_FM_BG_STEREO:
456 case TVAUDIO_NICAM_AM:
457 case TVAUDIO_NICAM_FM:
458 audio_dbg(1, "setstereo [fm] => %s\n",
459 name[mode % ARRAY_SIZE(name)]);
460 reg = fm[ mode % ARRAY_SIZE(fm) ];
461 saa_writeb(SAA7134_FM_DEMATRIX, reg);
462 break;
463 case TVAUDIO_FM_SAT_STEREO:
464 /* Not implemented */
465 break;
466 }
467 return 0;
468 }
469
470 static int tvaudio_thread(void *data)
471 {
472 struct saa7134_dev *dev = data;
473 int carr_vals[ARRAY_SIZE(mainscan)];
474 unsigned int i, audio, nscan;
475 int max1,max2,carrier,rx,mode,lastmode,default_carrier;
476
477 set_freezable();
478
479 for (;;) {
480 tvaudio_sleep(dev,-1);
481 if (kthread_should_stop())
482 goto done;
483
484 restart:
485 try_to_freeze();
486
487 dev->thread.scan1 = dev->thread.scan2;
488 audio_dbg(1, "tvaudio thread scan start [%d]\n",
489 dev->thread.scan1);
490 dev->tvaudio = NULL;
491
492 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
493 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
494
495 if (dev->ctl_automute)
496 dev->automute = 1;
497
498 mute_input_7134(dev);
499
500 /* give the tuner some time */
501 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
502 goto restart;
503
504 max1 = 0;
505 max2 = 0;
506 nscan = 0;
507 carrier = 0;
508 default_carrier = 0;
509 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
510 if (!(dev->tvnorm->id & mainscan[i].std))
511 continue;
512 if (!default_carrier)
513 default_carrier = mainscan[i].carr;
514 nscan++;
515 }
516
517 if (1 == nscan) {
518 /* only one candidate -- skip scan ;) */
519 audio_dbg(1, "only one main carrier candidate - skipping scan\n");
520 max1 = 12345;
521 carrier = default_carrier;
522 } else {
523 /* scan for the main carrier */
524 saa_writeb(SAA7134_MONITOR_SELECT,0x00);
525 tvaudio_setmode(dev,&tvaudio[0],NULL);
526 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
527 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
528 if (dev->thread.scan1 != dev->thread.scan2)
529 goto restart;
530 }
531 for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
532 if (max1 < carr_vals[i]) {
533 max2 = max1;
534 max1 = carr_vals[i];
535 carrier = mainscan[i].carr;
536 } else if (max2 < carr_vals[i]) {
537 max2 = carr_vals[i];
538 }
539 }
540 }
541
542 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
543 /* found good carrier */
544 audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
545 dev->tvnorm->name, carrier/1000, carrier%1000,
546 max1, max2);
547 dev->last_carrier = carrier;
548 dev->automute = 0;
549
550 } else if (0 != dev->last_carrier) {
551 /* no carrier -- try last detected one as fallback */
552 carrier = dev->last_carrier;
553 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
554 carrier/1000, carrier%1000);
555 dev->automute = 1;
556
557 } else {
558 /* no carrier + no fallback -- use default */
559 carrier = default_carrier;
560 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
561 carrier/1000, carrier%1000);
562 dev->automute = 1;
563 }
564 tvaudio_setcarrier(dev,carrier,carrier);
565 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
566 saa7134_tvaudio_setmute(dev);
567 /* find the exact tv audio norm */
568 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
569 if (dev->tvnorm->id != UNSET &&
570 !(dev->tvnorm->id & tvaudio[i].std))
571 continue;
572 if (tvaudio[i].carr1 != carrier)
573 continue;
574 /* Note: at least the primary carrier is right here */
575 if (UNSET == audio)
576 audio = i;
577 tvaudio_setmode(dev,&tvaudio[i],"trying");
578 if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
579 goto restart;
580 if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
581 audio = i;
582 break;
583 }
584 }
585 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
586 if (UNSET == audio)
587 continue;
588 tvaudio_setmode(dev,&tvaudio[audio],"using");
589
590 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
591 dev->tvaudio = &tvaudio[audio];
592
593 lastmode = 42;
594 for (;;) {
595
596 try_to_freeze();
597
598 if (tvaudio_sleep(dev,5000))
599 goto restart;
600 if (kthread_should_stop())
601 break;
602 if (UNSET == dev->thread.mode) {
603 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
604 mode = saa7134_tvaudio_rx2mode(rx);
605 } else {
606 mode = dev->thread.mode;
607 }
608 if (lastmode != mode) {
609 tvaudio_setstereo(dev,&tvaudio[audio],mode);
610 lastmode = mode;
611 }
612 }
613 }
614
615 done:
616 dev->thread.stopped = 1;
617 return 0;
618 }
619
620 /* ------------------------------------------------------------------ */
621 /* saa7133 / saa7135 code */
622
623 static char *stdres[0x20] = {
624 [0x00] = "no standard detected",
625 [0x01] = "B/G (in progress)",
626 [0x02] = "D/K (in progress)",
627 [0x03] = "M (in progress)",
628
629 [0x04] = "B/G A2",
630 [0x05] = "B/G NICAM",
631 [0x06] = "D/K A2 (1)",
632 [0x07] = "D/K A2 (2)",
633 [0x08] = "D/K A2 (3)",
634 [0x09] = "D/K NICAM",
635 [0x0a] = "L NICAM",
636 [0x0b] = "I NICAM",
637
638 [0x0c] = "M Korea",
639 [0x0d] = "M BTSC ",
640 [0x0e] = "M EIAJ",
641
642 [0x0f] = "FM radio / IF 10.7 / 50 deemp",
643 [0x10] = "FM radio / IF 10.7 / 75 deemp",
644 [0x11] = "FM radio / IF sel / 50 deemp",
645 [0x12] = "FM radio / IF sel / 75 deemp",
646
647 [0x13 ... 0x1e ] = "unknown",
648 [0x1f] = "??? [in progress]",
649 };
650
651 #define DSP_RETRY 32
652 #define DSP_DELAY 16
653 #define SAA7135_DSP_RWCLEAR_RERR 1
654
655 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
656 {
657 int state = saa_readb(SAA7135_DSP_RWSTATE);
658 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
659 audio_dbg(2, "%s: resetting error bit\n", dev->name);
660 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
661 }
662 return 0;
663 }
664
665 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
666 {
667 int state, count = DSP_RETRY;
668
669 state = saa_readb(SAA7135_DSP_RWSTATE);
670 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
671 pr_warn("%s: dsp access error\n", dev->name);
672 saa_dsp_reset_error_bit(dev);
673 return -EIO;
674 }
675 while (0 == (state & bit)) {
676 if (unlikely(0 == count)) {
677 pr_err("dsp access wait timeout [bit=%s]\n",
678 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
679 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
680 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
681 "???");
682 return -EIO;
683 }
684 saa_wait(DSP_DELAY);
685 state = saa_readb(SAA7135_DSP_RWSTATE);
686 count--;
687 }
688 return 0;
689 }
690
691
692 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
693 {
694 int err;
695
696 audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
697 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
698 if (err < 0)
699 return err;
700 saa_writel(reg,value);
701 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
702 if (err < 0)
703 return err;
704 return 0;
705 }
706
707 static int getstereo_7133(struct saa7134_dev *dev)
708 {
709 int retval = V4L2_TUNER_SUB_MONO;
710 u32 value;
711
712 value = saa_readl(0x528 >> 2);
713 if (value & 0x20)
714 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
715 if (value & 0x40)
716 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
717 return retval;
718 }
719
720 static int mute_input_7133(struct saa7134_dev *dev)
721 {
722 u32 reg = 0;
723 u32 xbarin, xbarout;
724 int mask;
725 struct saa7134_input *in;
726
727 xbarin = 0x03;
728 switch (dev->input->amux) {
729 case TV:
730 reg = 0x02;
731 xbarin = 0;
732 break;
733 case LINE1:
734 reg = 0x00;
735 break;
736 case LINE2:
737 case LINE2_LEFT:
738 reg = 0x09;
739 break;
740 }
741 saa_dsp_writel(dev, 0x464 >> 2, xbarin);
742 if (dev->ctl_mute) {
743 reg = 0x07;
744 xbarout = 0xbbbbbb;
745 } else
746 xbarout = 0xbbbb10;
747 saa_dsp_writel(dev, 0x46c >> 2, xbarout);
748
749 saa_writel(0x594 >> 2, reg);
750
751
752 /* switch gpio-connected external audio mux */
753 if (0 != card(dev).gpiomask) {
754 mask = card(dev).gpiomask;
755
756 if (card(dev).mute.name && dev->ctl_mute)
757 in = &card(dev).mute;
758 else
759 in = dev->input;
760
761 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
762 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
763 saa7134_track_gpio(dev,in->name);
764 }
765
766 return 0;
767 }
768
769 static int tvaudio_thread_ddep(void *data)
770 {
771 struct saa7134_dev *dev = data;
772 u32 value, norms;
773
774 set_freezable();
775 for (;;) {
776 tvaudio_sleep(dev,-1);
777 if (kthread_should_stop())
778 goto done;
779 restart:
780 try_to_freeze();
781
782 dev->thread.scan1 = dev->thread.scan2;
783 audio_dbg(1, "tvaudio thread scan start [%d]\n",
784 dev->thread.scan1);
785
786 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
787 /* insmod option override */
788 norms = (audio_ddep << 2) | 0x01;
789 audio_dbg(1, "ddep override: %s\n",
790 stdres[audio_ddep]);
791 } else if (&card(dev).radio == dev->input) {
792 audio_dbg(1, "FM Radio\n");
793 if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
794 norms = (0x11 << 2) | 0x01;
795 /* set IF frequency to 5.5 MHz */
796 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
797 } else {
798 norms = (0x0f << 2) | 0x01;
799 }
800 } else {
801 /* (let chip) scan for sound carrier */
802 norms = 0;
803 if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
804 norms |= 0x04;
805 if (dev->tvnorm->id & V4L2_STD_PAL_I)
806 norms |= 0x20;
807 if (dev->tvnorm->id & V4L2_STD_DK)
808 norms |= 0x08;
809 if (dev->tvnorm->id & V4L2_STD_MN)
810 norms |= 0x40;
811 if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
812 norms |= 0x10;
813 if (0 == norms)
814 norms = 0x7c; /* all */
815 audio_dbg(1, "scanning:%s%s%s%s%s\n",
816 (norms & 0x04) ? " B/G" : "",
817 (norms & 0x08) ? " D/K" : "",
818 (norms & 0x10) ? " L/L'" : "",
819 (norms & 0x20) ? " I" : "",
820 (norms & 0x40) ? " M" : "");
821 }
822
823 /* kick automatic standard detection */
824 saa_dsp_writel(dev, 0x454 >> 2, 0);
825 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
826
827 /* setup crossbars */
828 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
829 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
830
831 if (tvaudio_sleep(dev,3000))
832 goto restart;
833 value = saa_readl(0x528 >> 2) & 0xffffff;
834
835 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
836 value, stdres[value & 0x1f],
837 (value & 0x000020) ? ",stereo" : "",
838 (value & 0x000040) ? ",dual" : "");
839 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
840 (value & 0x000080) ? " A2/EIAJ pilot tone " : "",
841 (value & 0x000100) ? " A2/EIAJ dual " : "",
842 (value & 0x000200) ? " A2/EIAJ stereo " : "",
843 (value & 0x000400) ? " A2/EIAJ noise mute " : "",
844
845 (value & 0x000800) ? " BTSC/FM radio pilot " : "",
846 (value & 0x001000) ? " SAP carrier " : "",
847 (value & 0x002000) ? " BTSC stereo noise mute " : "",
848 (value & 0x004000) ? " SAP noise mute " : "",
849 (value & 0x008000) ? " VDSP " : "",
850
851 (value & 0x010000) ? " NICST " : "",
852 (value & 0x020000) ? " NICDU " : "",
853 (value & 0x040000) ? " NICAM muted " : "",
854 (value & 0x080000) ? " NICAM reserve sound " : "",
855
856 (value & 0x100000) ? " init done " : "");
857 }
858
859 done:
860 dev->thread.stopped = 1;
861 return 0;
862 }
863
864 /* ------------------------------------------------------------------ */
865 /* common stuff + external entry points */
866
867 void saa7134_enable_i2s(struct saa7134_dev *dev)
868 {
869 int i2s_format;
870
871 if (!card_is_empress(dev))
872 return;
873
874 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
875 return;
876
877 /* configure GPIO for out */
878 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
879
880 switch (dev->pci->device) {
881 case PCI_DEVICE_ID_PHILIPS_SAA7133:
882 case PCI_DEVICE_ID_PHILIPS_SAA7135:
883 /* Set I2S format (SONY)  */
884 saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
885 /* Start I2S */
886 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
887 break;
888
889 case PCI_DEVICE_ID_PHILIPS_SAA7134:
890 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
891
892 /* enable I2S audio output for the mpeg encoder */
893 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
894 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
895 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
896 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
897
898 default:
899 break;
900 }
901 }
902
903 int saa7134_tvaudio_rx2mode(u32 rx)
904 {
905 u32 mode;
906
907 mode = V4L2_TUNER_MODE_MONO;
908 if (rx & V4L2_TUNER_SUB_STEREO)
909 mode = V4L2_TUNER_MODE_STEREO;
910 else if (rx & V4L2_TUNER_SUB_LANG1)
911 mode = V4L2_TUNER_MODE_LANG1;
912 else if (rx & V4L2_TUNER_SUB_LANG2)
913 mode = V4L2_TUNER_MODE_LANG2;
914 return mode;
915 }
916
917 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
918 {
919 switch (dev->pci->device) {
920 case PCI_DEVICE_ID_PHILIPS_SAA7130:
921 case PCI_DEVICE_ID_PHILIPS_SAA7134:
922 mute_input_7134(dev);
923 break;
924 case PCI_DEVICE_ID_PHILIPS_SAA7133:
925 case PCI_DEVICE_ID_PHILIPS_SAA7135:
926 mute_input_7133(dev);
927 break;
928 }
929 }
930
931 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
932 struct saa7134_input *in)
933 {
934 dev->input = in;
935 switch (dev->pci->device) {
936 case PCI_DEVICE_ID_PHILIPS_SAA7130:
937 case PCI_DEVICE_ID_PHILIPS_SAA7134:
938 mute_input_7134(dev);
939 break;
940 case PCI_DEVICE_ID_PHILIPS_SAA7133:
941 case PCI_DEVICE_ID_PHILIPS_SAA7135:
942 mute_input_7133(dev);
943 break;
944 }
945 saa7134_enable_i2s(dev);
946 }
947
948 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
949 {
950 switch (dev->pci->device) {
951 case PCI_DEVICE_ID_PHILIPS_SAA7134:
952 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
953 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
954 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
955 break;
956 }
957 }
958
959 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
960 {
961 int retval = V4L2_TUNER_SUB_MONO;
962
963 switch (dev->pci->device) {
964 case PCI_DEVICE_ID_PHILIPS_SAA7134:
965 if (dev->tvaudio)
966 retval = tvaudio_getstereo(dev,dev->tvaudio);
967 break;
968 case PCI_DEVICE_ID_PHILIPS_SAA7133:
969 case PCI_DEVICE_ID_PHILIPS_SAA7135:
970 retval = getstereo_7133(dev);
971 break;
972 }
973 return retval;
974 }
975
976 void saa7134_tvaudio_init(struct saa7134_dev *dev)
977 {
978 int clock = saa7134_boards[dev->board].audio_clock;
979
980 if (UNSET != audio_clock_override)
981 clock = audio_clock_override;
982
983 switch (dev->pci->device) {
984 case PCI_DEVICE_ID_PHILIPS_SAA7134:
985 /* init all audio registers */
986 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
987 if (need_resched())
988 schedule();
989 else
990 udelay(10);
991
992 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
993 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
994 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
995 /* frame locked audio is mandatory for NICAM */
996 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
997 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
998 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
999 break;
1000 case PCI_DEVICE_ID_PHILIPS_SAA7133:
1001 case PCI_DEVICE_ID_PHILIPS_SAA7135:
1002 saa_writel(0x598 >> 2, clock);
1003 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1004 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1005 }
1006 }
1007
1008 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1009 {
1010 int (*my_thread)(void *data) = NULL;
1011
1012 switch (dev->pci->device) {
1013 case PCI_DEVICE_ID_PHILIPS_SAA7134:
1014 my_thread = tvaudio_thread;
1015 break;
1016 case PCI_DEVICE_ID_PHILIPS_SAA7133:
1017 case PCI_DEVICE_ID_PHILIPS_SAA7135:
1018 my_thread = tvaudio_thread_ddep;
1019 break;
1020 }
1021
1022 dev->thread.thread = NULL;
1023 dev->thread.scan1 = dev->thread.scan2 = 0;
1024 if (my_thread) {
1025 saa7134_tvaudio_init(dev);
1026 /* start tvaudio thread */
1027 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1028 if (IS_ERR(dev->thread.thread)) {
1029 pr_warn("%s: kernel_thread() failed\n",
1030 dev->name);
1031 /* XXX: missing error handling here */
1032 }
1033 }
1034
1035 saa7134_enable_i2s(dev);
1036 return 0;
1037 }
1038
1039 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1040 {
1041 dev->automute = 1;
1042 /* anything else to undo? */
1043 return 0;
1044 }
1045
1046 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1047 {
1048 /* shutdown tvaudio thread */
1049 if (dev->thread.thread && !dev->thread.stopped)
1050 kthread_stop(dev->thread.thread);
1051
1052 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1053 return 0;
1054 }
1055
1056 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1057 {
1058 if (dev->input->amux != TV) {
1059 audio_dbg(1, "sound IF not in use, skipping scan\n");
1060 dev->automute = 0;
1061 saa7134_tvaudio_setmute(dev);
1062 } else if (dev->thread.thread) {
1063 dev->thread.mode = UNSET;
1064 dev->thread.scan2++;
1065
1066 if (!dev->insuspend && !dev->thread.stopped)
1067 wake_up_process(dev->thread.thread);
1068 } else {
1069 dev->automute = 0;
1070 saa7134_tvaudio_setmute(dev);
1071 }
1072 return 0;
1073 }
1074
1075 EXPORT_SYMBOL(saa_dsp_writel);
1076 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
Linux kernel - Deliverables
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