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Initial commit
[wrt350n-kernel.git] / drivers / media / video / saa7134 / saa7134-tvaudio.c
blob4e9810469ae309c0ac41917c2764a7977301658e
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 <linux/init.h>
24 #include <linux/list.h>
25 #include <linux/module.h>
26 #include <linux/kernel.h>
27 #include <linux/kthread.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/freezer.h>
31 #include <asm/div64.h>
32
33 #include "saa7134-reg.h"
34 #include "saa7134.h"
35
36 /* ------------------------------------------------------------------ */
37
38 static unsigned int audio_debug = 0;
39 module_param(audio_debug, int, 0644);
40 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
41
42 static unsigned int audio_ddep = 0;
43 module_param(audio_ddep, int, 0644);
44 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
45
46 static int audio_clock_override = UNSET;
47 module_param(audio_clock_override, int, 0644);
48
49 static int audio_clock_tweak = 0;
50 module_param(audio_clock_tweak, int, 0644);
51 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
52
53 #define dprintk(fmt, arg...) if (audio_debug) \
54 printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
55 #define d2printk(fmt, arg...) if (audio_debug > 1) \
56 printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
57
58 #define print_regb(reg) printk("%s: reg 0x%03x [%-16s]: 0x%02x\n", \
59 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
60
61 /* msecs */
62 #define SCAN_INITIAL_DELAY 1000
63 #define SCAN_SAMPLE_DELAY 200
64 #define SCAN_SUBCARRIER_DELAY 2000
65
66 /* ------------------------------------------------------------------ */
67 /* saa7134 code */
68
69 static struct mainscan {
70 char *name;
71 v4l2_std_id std;
72 int carr;
73 } mainscan[] = {
74 {
75 .name = "MN",
76 .std = V4L2_STD_MN,
77 .carr = 4500,
78 },{
79 .name = "BGH",
80 .std = V4L2_STD_B | V4L2_STD_GH,
81 .carr = 5500,
82 },{
83 .name = "I",
84 .std = V4L2_STD_PAL_I,
85 .carr = 6000,
86 },{
87 .name = "DKL",
88 .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
89 .carr = 6500,
90 }
91 };
92
93 static struct saa7134_tvaudio tvaudio[] = {
94 {
95 .name = "PAL-B/G FM-stereo",
96 .std = V4L2_STD_PAL_BG,
97 .mode = TVAUDIO_FM_BG_STEREO,
98 .carr1 = 5500,
99 .carr2 = 5742,
100 },{
101 .name = "PAL-D/K1 FM-stereo",
102 .std = V4L2_STD_PAL_DK,
103 .carr1 = 6500,
104 .carr2 = 6258,
105 .mode = TVAUDIO_FM_BG_STEREO,
106 },{
107 .name = "PAL-D/K2 FM-stereo",
108 .std = V4L2_STD_PAL_DK,
109 .carr1 = 6500,
110 .carr2 = 6742,
111 .mode = TVAUDIO_FM_BG_STEREO,
112 },{
113 .name = "PAL-D/K3 FM-stereo",
114 .std = V4L2_STD_PAL_DK,
115 .carr1 = 6500,
116 .carr2 = 5742,
117 .mode = TVAUDIO_FM_BG_STEREO,
118 },{
119 .name = "PAL-B/G NICAM",
120 .std = V4L2_STD_PAL_BG,
121 .carr1 = 5500,
122 .carr2 = 5850,
123 .mode = TVAUDIO_NICAM_FM,
124 },{
125 .name = "PAL-I NICAM",
126 .std = V4L2_STD_PAL_I,
127 .carr1 = 6000,
128 .carr2 = 6552,
129 .mode = TVAUDIO_NICAM_FM,
130 },{
131 .name = "PAL-D/K NICAM",
132 .std = V4L2_STD_PAL_DK,
133 .carr1 = 6500,
134 .carr2 = 5850,
135 .mode = TVAUDIO_NICAM_FM,
136 },{
137 .name = "SECAM-L NICAM",
138 .std = V4L2_STD_SECAM_L,
139 .carr1 = 6500,
140 .carr2 = 5850,
141 .mode = TVAUDIO_NICAM_AM,
142 },{
143 .name = "SECAM-D/K NICAM",
144 .std = V4L2_STD_SECAM_DK,
145 .carr1 = 6500,
146 .carr2 = 5850,
147 .mode = TVAUDIO_NICAM_FM,
148 },{
149 .name = "NTSC-A2 FM-stereo",
150 .std = V4L2_STD_NTSC,
151 .carr1 = 4500,
152 .carr2 = 4724,
153 .mode = TVAUDIO_FM_K_STEREO,
154 },{
155 .name = "NTSC-M",
156 .std = V4L2_STD_NTSC,
157 .carr1 = 4500,
158 .carr2 = -1,
159 .mode = TVAUDIO_FM_MONO,
160 }
161 };
162 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
163
164 /* ------------------------------------------------------------------ */
165
166 static u32 tvaudio_carr2reg(u32 carrier)
167 {
168 u64 a = carrier;
169
170 a <<= 24;
171 do_div(a,12288);
172 return a;
173 }
174
175 static void tvaudio_setcarrier(struct saa7134_dev *dev,
176 int primary, int secondary)
177 {
178 if (-1 == secondary)
179 secondary = primary;
180 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
181 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
182 }
183
184 #define SAA7134_MUTE_MASK 0xbb
185 #define SAA7134_MUTE_ANALOG 0x04
186 #define SAA7134_MUTE_I2S 0x40
187
188 static void mute_input_7134(struct saa7134_dev *dev)
189 {
190 unsigned int mute;
191 struct saa7134_input *in;
192 int ausel=0, ics=0, ocs=0;
193 int mask;
194
195 /* look what is to do ... */
196 in = dev->input;
197 mute = (dev->ctl_mute ||
198 (dev->automute && (&card(dev).radio) != in));
199 if (card(dev).mute.name) {
200 /*
201 * 7130 - we'll mute using some unconnected audio input
202 * 7134 - we'll probably should switch external mux with gpio
203 */
204 if (mute)
205 in = &card(dev).mute;
206 }
207
208 if (dev->hw_mute == mute &&
209 dev->hw_input == in && !dev->insuspend) {
210 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
211 mute,in->name);
212 return;
213 }
214
215 dprintk("ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
216 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
217 dev->hw_mute = mute;
218 dev->hw_input = in;
219
220 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
221 /* 7134 mute */
222 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
223 SAA7134_MUTE_MASK |
224 SAA7134_MUTE_ANALOG |
225 SAA7134_MUTE_I2S :
226 SAA7134_MUTE_MASK);
227
228 /* switch internal audio mux */
229 switch (in->amux) {
230 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
231 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
232 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
233 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
234 }
235 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
236 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
237 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
238 // for oss, we need to change the clock configuration
239 if (in->amux == TV)
240 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
241 else
242 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01);
243
244 /* switch gpio-connected external audio mux */
245 if (0 == card(dev).gpiomask)
246 return;
247
248 mask = card(dev).gpiomask;
249 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
250 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
251 saa7134_track_gpio(dev,in->name);
252 }
253
254 static void tvaudio_setmode(struct saa7134_dev *dev,
255 struct saa7134_tvaudio *audio,
256 char *note)
257 {
258 int acpf, tweak = 0;
259
260 if (dev->tvnorm->id == V4L2_STD_NTSC) {
261 acpf = 0x19066;
262 } else {
263 acpf = 0x1e000;
264 }
265 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
266 tweak = audio_clock_tweak;
267
268 if (note)
269 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
270 note,audio->name,
271 audio->carr1 / 1000, audio->carr1 % 1000,
272 audio->carr2 / 1000, audio->carr2 % 1000,
273 acpf, tweak);
274
275 acpf += tweak;
276 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
277 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
278 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
279 tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
280
281 switch (audio->mode) {
282 case TVAUDIO_FM_MONO:
283 case TVAUDIO_FM_BG_STEREO:
284 saa_writeb(SAA7134_DEMODULATOR, 0x00);
285 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
286 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
287 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
288 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
289 break;
290 case TVAUDIO_FM_K_STEREO:
291 saa_writeb(SAA7134_DEMODULATOR, 0x00);
292 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
293 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
294 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
295 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
296 break;
297 case TVAUDIO_NICAM_FM:
298 saa_writeb(SAA7134_DEMODULATOR, 0x10);
299 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
300 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
301 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
302 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
303 break;
304 case TVAUDIO_NICAM_AM:
305 saa_writeb(SAA7134_DEMODULATOR, 0x12);
306 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
307 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
308 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
309 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
310 break;
311 case TVAUDIO_FM_SAT_STEREO:
312 /* not implemented (yet) */
313 break;
314 }
315 }
316
317 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
318 {
319 if (dev->thread.scan1 == dev->thread.scan2 &&
320 !kthread_should_stop()) {
321 if (timeout < 0) {
322 set_current_state(TASK_INTERRUPTIBLE);
323 schedule();
324 } else {
325 schedule_timeout_interruptible
326 (msecs_to_jiffies(timeout));
327 }
328 }
329 return dev->thread.scan1 != dev->thread.scan2;
330 }
331
332 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
333 {
334 __s32 left,right,value;
335
336 if (audio_debug > 1) {
337 int i;
338 dprintk("debug %d:",scan->carr);
339 for (i = -150; i <= 150; i += 30) {
340 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
341 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
342 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
343 return -1;
344 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
345 if (0 == i)
346 printk(" # %6d # ",value >> 16);
347 else
348 printk(" %6d",value >> 16);
349 }
350 printk("\n");
351 }
352 if (dev->tvnorm->id & scan->std) {
353 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
354 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
355 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
356 return -1;
357 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
358
359 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
360 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
361 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
362 return -1;
363 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
364
365 left >>= 16;
366 right >>= 16;
367 value = left > right ? left - right : right - left;
368 dprintk("scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
369 scan->carr / 1000, scan->carr % 1000,
370 scan->name, value, left, right);
371 } else {
372 value = 0;
373 dprintk("skipping %d.%03d MHz [%4s]\n",
374 scan->carr / 1000, scan->carr % 1000, scan->name);
375 }
376 return value;
377 }
378
379
380 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
381 {
382 __u32 idp, nicam, nicam_status;
383 int retval = -1;
384
385 switch (audio->mode) {
386 case TVAUDIO_FM_MONO:
387 return V4L2_TUNER_SUB_MONO;
388 case TVAUDIO_FM_K_STEREO:
389 case TVAUDIO_FM_BG_STEREO:
390 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
391 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
392 if (0x03 == (idp & 0x03))
393 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
394 else if (0x05 == (idp & 0x05))
395 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
396 else if (0x01 == (idp & 0x01))
397 retval = V4L2_TUNER_SUB_MONO;
398 break;
399 case TVAUDIO_FM_SAT_STEREO:
400 /* not implemented (yet) */
401 break;
402 case TVAUDIO_NICAM_FM:
403 case TVAUDIO_NICAM_AM:
404 nicam = saa_readb(SAA7134_AUDIO_STATUS);
405 dprintk("getstereo: nicam=0x%x\n",nicam);
406 if (nicam & 0x1) {
407 nicam_status = saa_readb(SAA7134_NICAM_STATUS);
408 dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
409
410 switch (nicam_status & 0x03) {
411 case 0x01:
412 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
413 break;
414 case 0x02:
415 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
416 break;
417 default:
418 retval = V4L2_TUNER_SUB_MONO;
419 }
420 } else {
421 /* No nicam detected */
422 }
423 break;
424 }
425 if (retval != -1)
426 dprintk("found audio subchannels:%s%s%s%s\n",
427 (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "",
428 (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
429 (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "",
430 (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : "");
431 return retval;
432 }
433
434 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
435 u32 mode)
436 {
437 static char *name[] = {
438 [ V4L2_TUNER_MODE_MONO ] = "mono",
439 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
440 [ V4L2_TUNER_MODE_LANG1 ] = "lang1",
441 [ V4L2_TUNER_MODE_LANG2 ] = "lang2",
442 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2",
443 };
444 static u32 fm[] = {
445 [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */
446 [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */
447 [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */
448 [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */
449 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */
450 };
451 u32 reg;
452
453 switch (audio->mode) {
454 case TVAUDIO_FM_MONO:
455 /* nothing to do ... */
456 break;
457 case TVAUDIO_FM_K_STEREO:
458 case TVAUDIO_FM_BG_STEREO:
459 case TVAUDIO_NICAM_AM:
460 case TVAUDIO_NICAM_FM:
461 dprintk("setstereo [fm] => %s\n",
462 name[ mode % ARRAY_SIZE(name) ]);
463 reg = fm[ mode % ARRAY_SIZE(fm) ];
464 saa_writeb(SAA7134_FM_DEMATRIX, reg);
465 break;
466 case TVAUDIO_FM_SAT_STEREO:
467 /* Not implemented */
468 break;
469 }
470 return 0;
471 }
472
473 static int tvaudio_thread(void *data)
474 {
475 struct saa7134_dev *dev = data;
476 int carr_vals[ARRAY_SIZE(mainscan)];
477 unsigned int i, audio, nscan;
478 int max1,max2,carrier,rx,mode,lastmode,default_carrier;
479
480
481 set_freezable();
482
483 for (;;) {
484 tvaudio_sleep(dev,-1);
485 if (kthread_should_stop())
486 goto done;
487
488 restart:
489 try_to_freeze();
490
491 dev->thread.scan1 = dev->thread.scan2;
492 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
493 dev->tvaudio = NULL;
494
495 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
496 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
497
498 if (dev->ctl_automute)
499 dev->automute = 1;
500
501 mute_input_7134(dev);
502
503 /* give the tuner some time */
504 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
505 goto restart;
506
507 max1 = 0;
508 max2 = 0;
509 nscan = 0;
510 carrier = 0;
511 default_carrier = 0;
512 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
513 if (!(dev->tvnorm->id & mainscan[i].std))
514 continue;
515 if (!default_carrier)
516 default_carrier = mainscan[i].carr;
517 nscan++;
518 }
519
520 if (1 == nscan) {
521 /* only one candidate -- skip scan ;) */
522 dprintk("only one main carrier candidate - skipping scan\n");
523 max1 = 12345;
524 carrier = default_carrier;
525 } else {
526 /* scan for the main carrier */
527 saa_writeb(SAA7134_MONITOR_SELECT,0x00);
528 tvaudio_setmode(dev,&tvaudio[0],NULL);
529 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
530 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
531 if (dev->thread.scan1 != dev->thread.scan2)
532 goto restart;
533 }
534 for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
535 if (max1 < carr_vals[i]) {
536 max2 = max1;
537 max1 = carr_vals[i];
538 carrier = mainscan[i].carr;
539 } else if (max2 < carr_vals[i]) {
540 max2 = carr_vals[i];
541 }
542 }
543 }
544
545 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
546 /* found good carrier */
547 dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
548 dev->tvnorm->name, carrier/1000, carrier%1000,
549 max1, max2);
550 dev->last_carrier = carrier;
551
552 } else if (0 != dev->last_carrier) {
553 /* no carrier -- try last detected one as fallback */
554 carrier = dev->last_carrier;
555 dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
556 "using %d.%03d MHz [last detected]\n",
557 dev->name, carrier/1000, carrier%1000);
558
559 } else {
560 /* no carrier + no fallback -- use default */
561 carrier = default_carrier;
562 dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
563 "using %d.%03d MHz [default]\n",
564 dev->name, carrier/1000, carrier%1000);
565 }
566 tvaudio_setcarrier(dev,carrier,carrier);
567 dev->automute = 0;
568 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
569 saa7134_tvaudio_setmute(dev);
570 /* find the exact tv audio norm */
571 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
572 if (dev->tvnorm->id != UNSET &&
573 !(dev->tvnorm->id & tvaudio[i].std))
574 continue;
575 if (tvaudio[i].carr1 != carrier)
576 continue;
577 /* Note: at least the primary carrier is right here */
578 if (UNSET == audio)
579 audio = i;
580 tvaudio_setmode(dev,&tvaudio[i],"trying");
581 if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
582 goto restart;
583 if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
584 audio = i;
585 break;
586 }
587 }
588 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
589 if (UNSET == audio)
590 continue;
591 tvaudio_setmode(dev,&tvaudio[audio],"using");
592
593 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
594 dev->tvaudio = &tvaudio[audio];
595
596 lastmode = 42;
597 for (;;) {
598
599 try_to_freeze();
600
601 if (tvaudio_sleep(dev,5000))
602 goto restart;
603 if (kthread_should_stop())
604 break;
605 if (UNSET == dev->thread.mode) {
606 rx = tvaudio_getstereo(dev,&tvaudio[i]);
607 mode = saa7134_tvaudio_rx2mode(rx);
608 } else {
609 mode = dev->thread.mode;
610 }
611 if (lastmode != mode) {
612 tvaudio_setstereo(dev,&tvaudio[audio],mode);
613 lastmode = mode;
614 }
615 }
616 }
617
618 done:
619 dev->thread.stopped = 1;
620 return 0;
621 }
622
623 /* ------------------------------------------------------------------ */
624 /* saa7133 / saa7135 code */
625
626 static char *stdres[0x20] = {
627 [0x00] = "no standard detected",
628 [0x01] = "B/G (in progress)",
629 [0x02] = "D/K (in progress)",
630 [0x03] = "M (in progress)",
631
632 [0x04] = "B/G A2",
633 [0x05] = "B/G NICAM",
634 [0x06] = "D/K A2 (1)",
635 [0x07] = "D/K A2 (2)",
636 [0x08] = "D/K A2 (3)",
637 [0x09] = "D/K NICAM",
638 [0x0a] = "L NICAM",
639 [0x0b] = "I NICAM",
640
641 [0x0c] = "M Korea",
642 [0x0d] = "M BTSC ",
643 [0x0e] = "M EIAJ",
644
645 [0x0f] = "FM radio / IF 10.7 / 50 deemp",
646 [0x10] = "FM radio / IF 10.7 / 75 deemp",
647 [0x11] = "FM radio / IF sel / 50 deemp",
648 [0x12] = "FM radio / IF sel / 75 deemp",
649
650 [0x13 ... 0x1e ] = "unknown",
651 [0x1f] = "??? [in progress]",
652 };
653
654 #define DSP_RETRY 32
655 #define DSP_DELAY 16
656
657 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
658 {
659 int state, count = DSP_RETRY;
660
661 state = saa_readb(SAA7135_DSP_RWSTATE);
662 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
663 printk("%s: dsp access error\n",dev->name);
664 /* FIXME: send ack ... */
665 return -EIO;
666 }
667 while (0 == (state & bit)) {
668 if (unlikely(0 == count)) {
669 printk("%s: dsp access wait timeout [bit=%s]\n",
670 dev->name,
671 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
672 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
673 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
674 "???");
675 return -EIO;
676 }
677 saa_wait(DSP_DELAY);
678 state = saa_readb(SAA7135_DSP_RWSTATE);
679 count--;
680 }
681 return 0;
682 }
683
684
685 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
686 {
687 int err;
688
689 d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
690 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
691 if (err < 0)
692 return err;
693 saa_writel(reg,value);
694 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
695 if (err < 0)
696 return err;
697 return 0;
698 }
699
700 static int getstereo_7133(struct saa7134_dev *dev)
701 {
702 int retval = V4L2_TUNER_SUB_MONO;
703 u32 value;
704
705 value = saa_readl(0x528 >> 2);
706 if (value & 0x20)
707 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
708 if (value & 0x40)
709 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
710 return retval;
711 }
712
713 static int mute_input_7133(struct saa7134_dev *dev)
714 {
715 u32 reg = 0;
716 u32 xbarin, xbarout;
717 int mask;
718 struct saa7134_input *in;
719
720 xbarin = 0x03;
721 switch (dev->input->amux) {
722 case TV:
723 reg = 0x02;
724 xbarin = 0;
725 break;
726 case LINE1:
727 reg = 0x00;
728 break;
729 case LINE2:
730 case LINE2_LEFT:
731 reg = 0x09;
732 break;
733 }
734 saa_dsp_writel(dev, 0x464 >> 2, xbarin);
735 if (dev->ctl_mute) {
736 reg = 0x07;
737 xbarout = 0xbbbbbb;
738 } else
739 xbarout = 0xbbbb10;
740 saa_dsp_writel(dev, 0x46c >> 2, xbarout);
741
742 saa_writel(0x594 >> 2, reg);
743
744
745 /* switch gpio-connected external audio mux */
746 if (0 != card(dev).gpiomask) {
747 mask = card(dev).gpiomask;
748
749 if (card(dev).mute.name && dev->ctl_mute)
750 in = &card(dev).mute;
751 else
752 in = dev->input;
753
754 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
755 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
756 saa7134_track_gpio(dev,in->name);
757 }
758
759 return 0;
760 }
761
762 static int tvaudio_thread_ddep(void *data)
763 {
764 struct saa7134_dev *dev = data;
765 u32 value, norms;
766
767
768 set_freezable();
769 for (;;) {
770 tvaudio_sleep(dev,-1);
771 if (kthread_should_stop())
772 goto done;
773 restart:
774 try_to_freeze();
775
776 dev->thread.scan1 = dev->thread.scan2;
777 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
778
779 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
780 /* insmod option override */
781 norms = (audio_ddep << 2) | 0x01;
782 dprintk("ddep override: %s\n",stdres[audio_ddep]);
783 } else if (&card(dev).radio == dev->input) {
784 dprintk("FM Radio\n");
785 if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
786 norms = (0x11 << 2) | 0x01;
787 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
788 } else {
789 norms = (0x0f << 2) | 0x01;
790 }
791 } else {
792 /* (let chip) scan for sound carrier */
793 norms = 0;
794 if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
795 norms |= 0x04;
796 if (dev->tvnorm->id & V4L2_STD_PAL_I)
797 norms |= 0x20;
798 if (dev->tvnorm->id & V4L2_STD_DK)
799 norms |= 0x08;
800 if (dev->tvnorm->id & V4L2_STD_MN)
801 norms |= 0x40;
802 if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
803 norms |= 0x10;
804 if (0 == norms)
805 norms = 0x7c; /* all */
806 dprintk("scanning:%s%s%s%s%s\n",
807 (norms & 0x04) ? " B/G" : "",
808 (norms & 0x08) ? " D/K" : "",
809 (norms & 0x10) ? " L/L'" : "",
810 (norms & 0x20) ? " I" : "",
811 (norms & 0x40) ? " M" : "");
812 }
813
814 /* kick automatic standard detection */
815 saa_dsp_writel(dev, 0x454 >> 2, 0);
816 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
817
818 /* setup crossbars */
819 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
820 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
821
822 if (tvaudio_sleep(dev,3000))
823 goto restart;
824 value = saa_readl(0x528 >> 2) & 0xffffff;
825
826 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
827 value, stdres[value & 0x1f],
828 (value & 0x000020) ? ",stereo" : "",
829 (value & 0x000040) ? ",dual" : "");
830 dprintk("detailed status: "
831 "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
832 (value & 0x000080) ? " A2/EIAJ pilot tone " : "",
833 (value & 0x000100) ? " A2/EIAJ dual " : "",
834 (value & 0x000200) ? " A2/EIAJ stereo " : "",
835 (value & 0x000400) ? " A2/EIAJ noise mute " : "",
836
837 (value & 0x000800) ? " BTSC/FM radio pilot " : "",
838 (value & 0x001000) ? " SAP carrier " : "",
839 (value & 0x002000) ? " BTSC stereo noise mute " : "",
840 (value & 0x004000) ? " SAP noise mute " : "",
841 (value & 0x008000) ? " VDSP " : "",
842
843 (value & 0x010000) ? " NICST " : "",
844 (value & 0x020000) ? " NICDU " : "",
845 (value & 0x040000) ? " NICAM muted " : "",
846 (value & 0x080000) ? " NICAM reserve sound " : "",
847
848 (value & 0x100000) ? " init done " : "");
849 }
850
851 done:
852 dev->thread.stopped = 1;
853 return 0;
854 }
855
856 /* ------------------------------------------------------------------ */
857 /* common stuff + external entry points */
858
859 void saa7134_enable_i2s(struct saa7134_dev *dev)
860 {
861 int i2s_format;
862
863 if (!card_is_empress(dev))
864 return;
865 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
866
867 /* enable I2S audio output for the mpeg encoder */
868 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
869 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
870 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
871 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
872 }
873
874 int saa7134_tvaudio_rx2mode(u32 rx)
875 {
876 u32 mode;
877
878 mode = V4L2_TUNER_MODE_MONO;
879 if (rx & V4L2_TUNER_SUB_STEREO)
880 mode = V4L2_TUNER_MODE_STEREO;
881 else if (rx & V4L2_TUNER_SUB_LANG1)
882 mode = V4L2_TUNER_MODE_LANG1;
883 else if (rx & V4L2_TUNER_SUB_LANG2)
884 mode = V4L2_TUNER_MODE_LANG2;
885 return mode;
886 }
887
888 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
889 {
890 switch (dev->pci->device) {
891 case PCI_DEVICE_ID_PHILIPS_SAA7130:
892 case PCI_DEVICE_ID_PHILIPS_SAA7134:
893 mute_input_7134(dev);
894 break;
895 case PCI_DEVICE_ID_PHILIPS_SAA7133:
896 case PCI_DEVICE_ID_PHILIPS_SAA7135:
897 mute_input_7133(dev);
898 break;
899 }
900 }
901
902 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
903 struct saa7134_input *in)
904 {
905 dev->input = in;
906 switch (dev->pci->device) {
907 case PCI_DEVICE_ID_PHILIPS_SAA7130:
908 case PCI_DEVICE_ID_PHILIPS_SAA7134:
909 mute_input_7134(dev);
910 break;
911 case PCI_DEVICE_ID_PHILIPS_SAA7133:
912 case PCI_DEVICE_ID_PHILIPS_SAA7135:
913 mute_input_7133(dev);
914 break;
915 }
916 saa7134_enable_i2s(dev);
917 }
918
919 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
920 {
921 switch (dev->pci->device) {
922 case PCI_DEVICE_ID_PHILIPS_SAA7134:
923 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
924 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
925 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
926 break;
927 }
928 }
929
930 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
931 {
932 int retval = V4L2_TUNER_SUB_MONO;
933
934 switch (dev->pci->device) {
935 case PCI_DEVICE_ID_PHILIPS_SAA7134:
936 if (dev->tvaudio)
937 retval = tvaudio_getstereo(dev,dev->tvaudio);
938 break;
939 case PCI_DEVICE_ID_PHILIPS_SAA7133:
940 case PCI_DEVICE_ID_PHILIPS_SAA7135:
941 retval = getstereo_7133(dev);
942 break;
943 }
944 return retval;
945 }
946
947 void saa7134_tvaudio_init(struct saa7134_dev *dev)
948 {
949 int clock = saa7134_boards[dev->board].audio_clock;
950
951 if (UNSET != audio_clock_override)
952 clock = audio_clock_override;
953
954 switch (dev->pci->device) {
955 case PCI_DEVICE_ID_PHILIPS_SAA7134:
956 /* init all audio registers */
957 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
958 if (need_resched())
959 schedule();
960 else
961 udelay(10);
962
963 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
964 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
965 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
966 /* frame locked audio is mandatory for NICAM */
967 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
968 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
969 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
970 break;
971 case PCI_DEVICE_ID_PHILIPS_SAA7133:
972 case PCI_DEVICE_ID_PHILIPS_SAA7135:
973 saa_writel(0x598 >> 2, clock);
974 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
975 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
976 }
977 }
978
979 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
980 {
981 int (*my_thread)(void *data) = NULL;
982
983 switch (dev->pci->device) {
984 case PCI_DEVICE_ID_PHILIPS_SAA7134:
985 my_thread = tvaudio_thread;
986 break;
987 case PCI_DEVICE_ID_PHILIPS_SAA7133:
988 case PCI_DEVICE_ID_PHILIPS_SAA7135:
989 my_thread = tvaudio_thread_ddep;
990 break;
991 }
992
993 dev->thread.thread = NULL;
994 if (my_thread) {
995 saa7134_tvaudio_init(dev);
996 /* start tvaudio thread */
997 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
998 if (IS_ERR(dev->thread.thread)) {
999 printk(KERN_WARNING "%s: kernel_thread() failed\n",
1000 dev->name);
1001 /* XXX: missing error handling here */
1002 }
1003 saa7134_tvaudio_do_scan(dev);
1004 }
1005
1006 saa7134_enable_i2s(dev);
1007 return 0;
1008 }
1009
1010 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1011 {
1012 /* shutdown tvaudio thread */
1013 if (dev->thread.thread && !dev->thread.stopped)
1014 kthread_stop(dev->thread.thread);
1015
1016 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1017 return 0;
1018 }
1019
1020 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1021 {
1022 if (dev->input->amux != TV) {
1023 dprintk("sound IF not in use, skipping scan\n");
1024 dev->automute = 0;
1025 saa7134_tvaudio_setmute(dev);
1026 } else if (dev->thread.thread) {
1027 dev->thread.mode = UNSET;
1028 dev->thread.scan2++;
1029
1030 if (!dev->insuspend && !dev->thread.stopped)
1031 wake_up_process(dev->thread.thread);
1032 } else {
1033 dev->automute = 0;
1034 saa7134_tvaudio_setmute(dev);
1035 }
1036 return 0;
1037 }
1038
1039 EXPORT_SYMBOL(saa_dsp_writel);
1040 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1041
1042 /* ----------------------------------------------------------- */
1043 /*
1044 * Local variables:
1045 * c-basic-offset: 8
1046 * End:
1047 */
WRT350N Kernel Patches