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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / media / video / saa7134 / saa7134-tvaudio.c
blobecac13c006d513b61ba6350f2cd04723fcfb9fef
1 /*
2 * $Id: saa7134-tvaudio.c,v 1.22 2005/01/07 13:11:19 kraxel Exp $
3 *
4 * device driver for philips saa7134 based TV cards
5 * tv audio decoder (fm stereo, nicam, ...)
6 *
7 * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include <linux/init.h>
25 #include <linux/list.h>
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/smp_lock.h>
32 #include <asm/div64.h>
33
34 #include "saa7134-reg.h"
35 #include "saa7134.h"
36
37 /* ------------------------------------------------------------------ */
38
39 static unsigned int audio_debug = 0;
40 module_param(audio_debug, int, 0644);
41 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
42
43 static unsigned int audio_ddep = 0;
44 module_param(audio_ddep, int, 0644);
45 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
46
47 static int audio_clock_override = UNSET;
48 module_param(audio_clock_override, int, 0644);
49
50 static int audio_clock_tweak = 0;
51 module_param(audio_clock_tweak, int, 0644);
52 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
53
54 #define dprintk(fmt, arg...) if (audio_debug) \
55 printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
56 #define d2printk(fmt, arg...) if (audio_debug > 1) \
57 printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
58
59 #define print_regb(reg) printk("%s: reg 0x%03x [%-16s]: 0x%02x\n", \
60 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
61
62 /* msecs */
63 #define SCAN_INITIAL_DELAY 1000
64 #define SCAN_SAMPLE_DELAY 200
65 #define SCAN_SUBCARRIER_DELAY 2000
66
67 /* ------------------------------------------------------------------ */
68 /* saa7134 code */
69
70 static struct mainscan {
71 char *name;
72 v4l2_std_id std;
73 int carr;
74 } mainscan[] = {
75 {
76 .name = "M",
77 .std = V4L2_STD_NTSC | V4L2_STD_PAL_M,
78 .carr = 4500,
79 },{
80 .name = "BG",
81 .std = V4L2_STD_PAL_BG,
82 .carr = 5500,
83 },{
84 .name = "I",
85 .std = V4L2_STD_PAL_I,
86 .carr = 6000,
87 },{
88 .name = "DKL",
89 .std = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
90 .carr = 6500,
91 }
92 };
93
94 static struct saa7134_tvaudio tvaudio[] = {
95 {
96 .name = "PAL-B/G FM-stereo",
97 .std = V4L2_STD_PAL,
98 .mode = TVAUDIO_FM_BG_STEREO,
99 .carr1 = 5500,
100 .carr2 = 5742,
101 },{
102 .name = "PAL-D/K1 FM-stereo",
103 .std = V4L2_STD_PAL,
104 .carr1 = 6500,
105 .carr2 = 6258,
106 .mode = TVAUDIO_FM_BG_STEREO,
107 },{
108 .name = "PAL-D/K2 FM-stereo",
109 .std = V4L2_STD_PAL,
110 .carr1 = 6500,
111 .carr2 = 6742,
112 .mode = TVAUDIO_FM_BG_STEREO,
113 },{
114 .name = "PAL-D/K3 FM-stereo",
115 .std = V4L2_STD_PAL,
116 .carr1 = 6500,
117 .carr2 = 5742,
118 .mode = TVAUDIO_FM_BG_STEREO,
119 },{
120 .name = "PAL-B/G NICAM",
121 .std = V4L2_STD_PAL,
122 .carr1 = 5500,
123 .carr2 = 5850,
124 .mode = TVAUDIO_NICAM_FM,
125 },{
126 .name = "PAL-I NICAM",
127 .std = V4L2_STD_PAL,
128 .carr1 = 6000,
129 .carr2 = 6552,
130 .mode = TVAUDIO_NICAM_FM,
131 },{
132 .name = "PAL-D/K NICAM",
133 .std = V4L2_STD_PAL,
134 .carr1 = 6500,
135 .carr2 = 5850,
136 .mode = TVAUDIO_NICAM_FM,
137 },{
138 .name = "SECAM-L NICAM",
139 .std = V4L2_STD_SECAM,
140 .carr1 = 6500,
141 .carr2 = 5850,
142 .mode = TVAUDIO_NICAM_AM,
143 },{
144 .name = "SECAM-D/K",
145 .std = V4L2_STD_SECAM,
146 .carr1 = 6500,
147 .carr2 = -1,
148 .mode = TVAUDIO_FM_MONO,
149 },{
150 .name = "NTSC-M",
151 .std = V4L2_STD_NTSC,
152 .carr1 = 4500,
153 .carr2 = -1,
154 .mode = TVAUDIO_FM_MONO,
155 },{
156 .name = "NTSC-A2 FM-stereo",
157 .std = V4L2_STD_NTSC,
158 .carr1 = 4500,
159 .carr2 = 4724,
160 .mode = TVAUDIO_FM_K_STEREO,
161 }
162 };
163 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
164
165 /* ------------------------------------------------------------------ */
166
167 static void tvaudio_init(struct saa7134_dev *dev)
168 {
169 int clock = saa7134_boards[dev->board].audio_clock;
170
171 if (UNSET != audio_clock_override)
172 clock = audio_clock_override;
173
174 /* init all audio registers */
175 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
176 if (need_resched())
177 schedule();
178 else
179 udelay(10);
180
181 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
182 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
183 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
184 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
185
186 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
187 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
188 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
189 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
190 }
191
192 static u32 tvaudio_carr2reg(u32 carrier)
193 {
194 u64 a = carrier;
195
196 a <<= 24;
197 do_div(a,12288);
198 return a;
199 }
200
201 static void tvaudio_setcarrier(struct saa7134_dev *dev,
202 int primary, int secondary)
203 {
204 if (-1 == secondary)
205 secondary = primary;
206 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
207 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
208 }
209
210 static void mute_input_7134(struct saa7134_dev *dev)
211 {
212 unsigned int mute;
213 struct saa7134_input *in;
214 int ausel=0, ics=0, ocs=0;
215 int mask;
216
217 /* look what is to do ... */
218 in = dev->input;
219 mute = (dev->ctl_mute ||
220 (dev->automute && (&card(dev).radio) != in));
221 if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
222 card(dev).mute.name) {
223 /* 7130 - we'll mute using some unconnected audio input */
224 if (mute)
225 in = &card(dev).mute;
226 }
227 if (dev->hw_mute == mute &&
228 dev->hw_input == in) {
229 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
230 mute,in->name);
231 return;
232 }
233
234 dprintk("ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
235 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
236 dev->hw_mute = mute;
237 dev->hw_input = in;
238
239 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
240 /* 7134 mute */
241 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xbf : 0xbb);
242
243 /* switch internal audio mux */
244 switch (in->amux) {
245 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
246 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
247 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
248 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
249 }
250 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
251 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
252 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
253
254 /* switch gpio-connected external audio mux */
255 if (0 == card(dev).gpiomask)
256 return;
257 mask = card(dev).gpiomask;
258 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
259 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
260 saa7134_track_gpio(dev,in->name);
261 }
262
263 static void tvaudio_setmode(struct saa7134_dev *dev,
264 struct saa7134_tvaudio *audio,
265 char *note)
266 {
267 int acpf, tweak = 0;
268
269 if (dev->tvnorm->id == V4L2_STD_NTSC) {
270 acpf = 0x19066;
271 } else {
272 acpf = 0x1e000;
273 }
274 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
275 tweak = audio_clock_tweak;
276
277 if (note)
278 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
279 note,audio->name,
280 audio->carr1 / 1000, audio->carr1 % 1000,
281 audio->carr2 / 1000, audio->carr2 % 1000,
282 acpf, tweak);
283
284 acpf += tweak;
285 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
286 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
287 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
288 tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
289
290 switch (audio->mode) {
291 case TVAUDIO_FM_MONO:
292 case TVAUDIO_FM_BG_STEREO:
293 saa_writeb(SAA7134_DEMODULATOR, 0x00);
294 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
295 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
296 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
297 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
298 break;
299 case TVAUDIO_FM_K_STEREO:
300 saa_writeb(SAA7134_DEMODULATOR, 0x00);
301 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
302 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
303 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
304 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
305 break;
306 case TVAUDIO_NICAM_FM:
307 saa_writeb(SAA7134_DEMODULATOR, 0x10);
308 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
309 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
310 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
311 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
312 break;
313 case TVAUDIO_NICAM_AM:
314 saa_writeb(SAA7134_DEMODULATOR, 0x12);
315 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
316 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
317 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
318 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
319 break;
320 case TVAUDIO_FM_SAT_STEREO:
321 /* not implemented (yet) */
322 break;
323 }
324 }
325
326 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
327 {
328 DECLARE_WAITQUEUE(wait, current);
329
330 add_wait_queue(&dev->thread.wq, &wait);
331 if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
332 if (timeout < 0) {
333 set_current_state(TASK_INTERRUPTIBLE);
334 schedule();
335 } else {
336 #if 0
337 /* hmm, that one doesn't return on wakeup ... */
338 msleep_interruptible(timeout);
339 #else
340 set_current_state(TASK_INTERRUPTIBLE);
341 schedule_timeout(msecs_to_jiffies(timeout));
342 #endif
343 }
344 }
345 remove_wait_queue(&dev->thread.wq, &wait);
346 return dev->thread.scan1 != dev->thread.scan2;
347 }
348
349 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
350 {
351 __s32 left,right,value;
352
353 if (audio_debug > 1) {
354 int i;
355 dprintk("debug %d:",scan->carr);
356 for (i = -150; i <= 150; i += 30) {
357 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
358 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
359 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
360 return -1;
361 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
362 if (0 == i)
363 printk(" # %6d # ",value >> 16);
364 else
365 printk(" %6d",value >> 16);
366 }
367 printk("\n");
368 }
369
370 if (dev->tvnorm->id & scan->std) {
371 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
372 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
373 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
374 return -1;
375 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
376
377 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
378 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
379 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
380 return -1;
381 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
382
383 left >>= 16;
384 right >>= 16;
385 value = left > right ? left - right : right - left;
386 dprintk("scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
387 scan->carr / 1000, scan->carr % 1000,
388 scan->name, value, left, right);
389 } else {
390 value = 0;
391 dprintk("skipping %d.%03d MHz [%4s]\n",
392 scan->carr / 1000, scan->carr % 1000, scan->name);
393 }
394 return value;
395 }
396
397 #if 0
398 static void sifdebug_dump_regs(struct saa7134_dev *dev)
399 {
400 print_regb(AUDIO_STATUS);
401 print_regb(IDENT_SIF);
402 print_regb(LEVEL_READOUT1);
403 print_regb(LEVEL_READOUT2);
404 print_regb(DCXO_IDENT_CTRL);
405 print_regb(DEMODULATOR);
406 print_regb(AGC_GAIN_SELECT);
407 print_regb(MONITOR_SELECT);
408 print_regb(FM_DEEMPHASIS);
409 print_regb(FM_DEMATRIX);
410 print_regb(SIF_SAMPLE_FREQ);
411 print_regb(ANALOG_IO_SELECT);
412 }
413 #endif
414
415 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
416 {
417 __u32 idp,nicam;
418 int retval = -1;
419
420 switch (audio->mode) {
421 case TVAUDIO_FM_MONO:
422 return V4L2_TUNER_SUB_MONO;
423 case TVAUDIO_FM_K_STEREO:
424 case TVAUDIO_FM_BG_STEREO:
425 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
426 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
427 if (0x03 == (idp & 0x03))
428 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
429 else if (0x05 == (idp & 0x05))
430 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
431 else if (0x01 == (idp & 0x01))
432 retval = V4L2_TUNER_SUB_MONO;
433 break;
434 case TVAUDIO_FM_SAT_STEREO:
435 /* not implemented (yet) */
436 break;
437 case TVAUDIO_NICAM_FM:
438 case TVAUDIO_NICAM_AM:
439 nicam = saa_readb(SAA7134_NICAM_STATUS);
440 dprintk("getstereo: nicam=0x%x\n",nicam);
441 switch (nicam & 0x0b) {
442 case 0x09:
443 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
444 break;
445 case 0x0a:
446 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
447 break;
448 case 0x08:
449 default:
450 retval = V4L2_TUNER_SUB_MONO;
451 break;
452 }
453 break;
454 }
455 if (retval != -1)
456 dprintk("found audio subchannels:%s%s%s%s\n",
457 (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "",
458 (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
459 (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "",
460 (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : "");
461 return retval;
462 }
463
464 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
465 u32 mode)
466 {
467 static char *name[] = {
468 [ V4L2_TUNER_MODE_MONO ] = "mono",
469 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
470 [ V4L2_TUNER_MODE_LANG1 ] = "lang1",
471 [ V4L2_TUNER_MODE_LANG2 ] = "lang2",
472 };
473 static u32 fm[] = {
474 [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */
475 [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */
476 [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */
477 [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */
478 };
479 u32 reg;
480
481 switch (audio->mode) {
482 case TVAUDIO_FM_MONO:
483 /* nothing to do ... */
484 break;
485 case TVAUDIO_FM_K_STEREO:
486 case TVAUDIO_FM_BG_STEREO:
487 dprintk("setstereo [fm] => %s\n",
488 name[ mode % ARRAY_SIZE(name) ]);
489 reg = fm[ mode % ARRAY_SIZE(fm) ];
490 saa_writeb(SAA7134_FM_DEMATRIX, reg);
491 break;
492 case TVAUDIO_FM_SAT_STEREO:
493 case TVAUDIO_NICAM_AM:
494 case TVAUDIO_NICAM_FM:
495 /* FIXME */
496 break;
497 }
498 return 0;
499 }
500
501 static int tvaudio_thread(void *data)
502 {
503 struct saa7134_dev *dev = data;
504 int carr_vals[ARRAY_SIZE(mainscan)];
505 unsigned int i, audio, nscan;
506 int max1,max2,carrier,rx,mode,lastmode,default_carrier;
507
508 daemonize("%s", dev->name);
509 allow_signal(SIGTERM);
510 for (;;) {
511 tvaudio_sleep(dev,-1);
512 if (dev->thread.shutdown || signal_pending(current))
513 goto done;
514
515 restart:
516 dev->thread.scan1 = dev->thread.scan2;
517 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
518 dev->tvaudio = NULL;
519 tvaudio_init(dev);
520 if (dev->ctl_automute)
521 dev->automute = 1;
522 mute_input_7134(dev);
523
524 /* give the tuner some time */
525 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
526 goto restart;
527
528 max1 = 0;
529 max2 = 0;
530 nscan = 0;
531 carrier = 0;
532 default_carrier = 0;
533 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
534 if (!(dev->tvnorm->id & mainscan[i].std))
535 continue;
536 if (!default_carrier)
537 default_carrier = mainscan[i].carr;
538 nscan++;
539 }
540
541 if (1 == nscan) {
542 /* only one candidate -- skip scan ;) */
543 max1 = 12345;
544 carrier = default_carrier;
545 } else {
546 /* scan for the main carrier */
547 saa_writeb(SAA7134_MONITOR_SELECT,0x00);
548 tvaudio_setmode(dev,&tvaudio[0],NULL);
549 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
550 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
551 if (dev->thread.scan1 != dev->thread.scan2)
552 goto restart;
553 }
554 for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
555 if (max1 < carr_vals[i]) {
556 max2 = max1;
557 max1 = carr_vals[i];
558 carrier = mainscan[i].carr;
559 } else if (max2 < carr_vals[i]) {
560 max2 = carr_vals[i];
561 }
562 }
563 }
564
565 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
566 /* found good carrier */
567 dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
568 dev->tvnorm->name, carrier/1000, carrier%1000,
569 max1, max2);
570 dev->last_carrier = carrier;
571
572 } else if (0 != dev->last_carrier) {
573 /* no carrier -- try last detected one as fallback */
574 carrier = dev->last_carrier;
575 printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
576 "using %d.%03d MHz [last detected]\n",
577 dev->name, carrier/1000, carrier%1000);
578
579 } else {
580 /* no carrier + no fallback -- use default */
581 carrier = default_carrier;
582 printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
583 "using %d.%03d MHz [default]\n",
584 dev->name, carrier/1000, carrier%1000);
585 }
586 tvaudio_setcarrier(dev,carrier,carrier);
587 dev->automute = 0;
588 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
589 saa7134_tvaudio_setmute(dev);
590
591 /* find the exact tv audio norm */
592 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
593 if (dev->tvnorm->id != UNSET &&
594 !(dev->tvnorm->id & tvaudio[i].std))
595 continue;
596 if (tvaudio[i].carr1 != carrier)
597 continue;
598
599 if (UNSET == audio)
600 audio = i;
601 tvaudio_setmode(dev,&tvaudio[i],"trying");
602 if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
603 goto restart;
604 if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
605 audio = i;
606 break;
607 }
608 }
609 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
610 if (UNSET == audio)
611 continue;
612 tvaudio_setmode(dev,&tvaudio[audio],"using");
613 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
614 dev->tvaudio = &tvaudio[audio];
615
616 lastmode = 42;
617 for (;;) {
618 if (tvaudio_sleep(dev,5000))
619 goto restart;
620 if (dev->thread.shutdown || signal_pending(current))
621 break;
622 if (UNSET == dev->thread.mode) {
623 rx = tvaudio_getstereo(dev,&tvaudio[i]);
624 mode = saa7134_tvaudio_rx2mode(rx);
625 } else {
626 mode = dev->thread.mode;
627 }
628 if (lastmode != mode) {
629 tvaudio_setstereo(dev,&tvaudio[audio],mode);
630 lastmode = mode;
631 }
632 }
633 }
634
635 done:
636 complete_and_exit(&dev->thread.exit, 0);
637 return 0;
638 }
639
640 /* ------------------------------------------------------------------ */
641 /* saa7133 / saa7135 code */
642
643 static char *stdres[0x20] = {
644 [0x00] = "no standard detected",
645 [0x01] = "B/G (in progress)",
646 [0x02] = "D/K (in progress)",
647 [0x03] = "M (in progress)",
648
649 [0x04] = "B/G A2",
650 [0x05] = "B/G NICAM",
651 [0x06] = "D/K A2 (1)",
652 [0x07] = "D/K A2 (2)",
653 [0x08] = "D/K A2 (3)",
654 [0x09] = "D/K NICAM",
655 [0x0a] = "L NICAM",
656 [0x0b] = "I NICAM",
657
658 [0x0c] = "M Korea",
659 [0x0d] = "M BTSC ",
660 [0x0e] = "M EIAJ",
661
662 [0x0f] = "FM radio / IF 10.7 / 50 deemp",
663 [0x10] = "FM radio / IF 10.7 / 75 deemp",
664 [0x11] = "FM radio / IF sel / 50 deemp",
665 [0x12] = "FM radio / IF sel / 75 deemp",
666
667 [0x13 ... 0x1e ] = "unknown",
668 [0x1f] = "??? [in progress]",
669 };
670
671 #define DSP_RETRY 32
672 #define DSP_DELAY 16
673
674 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
675 {
676 int state, count = DSP_RETRY;
677
678 state = saa_readb(SAA7135_DSP_RWSTATE);
679 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
680 printk("%s: dsp access error\n",dev->name);
681 /* FIXME: send ack ... */
682 return -EIO;
683 }
684 while (0 == (state & bit)) {
685 if (unlikely(0 == count)) {
686 printk("%s: dsp access wait timeout [bit=%s]\n",
687 dev->name,
688 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
689 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
690 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
691 "???");
692 return -EIO;
693 }
694 saa_wait(DSP_DELAY);
695 state = saa_readb(SAA7135_DSP_RWSTATE);
696 count--;
697 }
698 return 0;
699 }
700
701 #if 0
702 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
703 {
704 int err;
705
706 d2printk("dsp read reg 0x%x\n", reg<<2);
707 saa_readl(reg);
708 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
709 if (err < 0)
710 return err;
711 *value = saa_readl(reg);
712 d2printk("dsp read => 0x%06x\n", *value & 0xffffff);
713 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
714 if (err < 0)
715 return err;
716 return 0;
717 }
718 #endif
719
720 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
721 {
722 int err;
723
724 d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
725 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
726 if (err < 0)
727 return err;
728 saa_writel(reg,value);
729 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
730 if (err < 0)
731 return err;
732 return 0;
733 }
734
735 static int getstereo_7133(struct saa7134_dev *dev)
736 {
737 int retval = V4L2_TUNER_SUB_MONO;
738 u32 value;
739
740 value = saa_readl(0x528 >> 2);
741 if (value & 0x20)
742 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
743 if (value & 0x40)
744 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
745 return retval;
746 }
747
748 static int mute_input_7133(struct saa7134_dev *dev)
749 {
750 u32 reg = 0;
751 int mask;
752
753 switch (dev->input->amux) {
754 case TV:
755 reg = 0x02;
756 break;
757 case LINE1:
758 reg = 0x00;
759 break;
760 case LINE2:
761 case LINE2_LEFT:
762 reg = 0x01;
763 break;
764 }
765 if (dev->ctl_mute)
766 reg = 0x07;
767 saa_writel(0x594 >> 2, reg);
768
769 /* switch gpio-connected external audio mux */
770 if (0 != card(dev).gpiomask) {
771 mask = card(dev).gpiomask;
772 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
773 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, dev->input->gpio);
774 saa7134_track_gpio(dev,dev->input->name);
775 }
776 return 0;
777 }
778
779 static int tvaudio_thread_ddep(void *data)
780 {
781 struct saa7134_dev *dev = data;
782 u32 value, norms, clock;
783
784 daemonize("%s", dev->name);
785 allow_signal(SIGTERM);
786
787 clock = saa7134_boards[dev->board].audio_clock;
788 if (UNSET != audio_clock_override)
789 clock = audio_clock_override;
790 saa_writel(0x598 >> 2, clock);
791
792 /* unmute */
793 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
794 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
795
796 for (;;) {
797 tvaudio_sleep(dev,-1);
798 if (dev->thread.shutdown || signal_pending(current))
799 goto done;
800
801 restart:
802 dev->thread.scan1 = dev->thread.scan2;
803 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
804
805 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
806 /* insmod option override */
807 norms = (audio_ddep << 2) | 0x01;
808 dprintk("ddep override: %s\n",stdres[audio_ddep]);
809 } else if (&card(dev).radio == dev->input) {
810 dprintk("FM Radio\n");
811 norms = (0x0f << 2) | 0x01;
812 } else {
813 /* (let chip) scan for sound carrier */
814 norms = 0;
815 if (dev->tvnorm->id & V4L2_STD_PAL) {
816 dprintk("PAL scan\n");
817 norms |= 0x2c; /* B/G + D/K + I */
818 }
819 if (dev->tvnorm->id & V4L2_STD_NTSC) {
820 dprintk("NTSC scan\n");
821 norms |= 0x40; /* M */
822 }
823 if (dev->tvnorm->id & V4L2_STD_SECAM) {
824 dprintk("SECAM scan\n");
825 norms |= 0x18; /* L + D/K */
826 }
827 if (0 == norms)
828 norms = 0x7c; /* all */
829 dprintk("scanning:%s%s%s%s%s\n",
830 (norms & 0x04) ? " B/G" : "",
831 (norms & 0x08) ? " D/K" : "",
832 (norms & 0x10) ? " L/L'" : "",
833 (norms & 0x20) ? " I" : "",
834 (norms & 0x40) ? " M" : "");
835 }
836
837 /* kick automatic standard detection */
838 saa_dsp_writel(dev, 0x454 >> 2, 0);
839 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
840
841 /* setup crossbars */
842 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
843 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
844
845 if (tvaudio_sleep(dev,3000))
846 goto restart;
847 value = saa_readl(0x528 >> 2) & 0xffffff;
848
849 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
850 value, stdres[value & 0x1f],
851 (value & 0x000020) ? ",stereo" : "",
852 (value & 0x000040) ? ",dual" : "");
853 dprintk("detailed status: "
854 "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
855 (value & 0x000080) ? " A2/EIAJ pilot tone " : "",
856 (value & 0x000100) ? " A2/EIAJ dual " : "",
857 (value & 0x000200) ? " A2/EIAJ stereo " : "",
858 (value & 0x000400) ? " A2/EIAJ noise mute " : "",
859
860 (value & 0x000800) ? " BTSC/FM radio pilot " : "",
861 (value & 0x001000) ? " SAP carrier " : "",
862 (value & 0x002000) ? " BTSC stereo noise mute " : "",
863 (value & 0x004000) ? " SAP noise mute " : "",
864 (value & 0x008000) ? " VDSP " : "",
865
866 (value & 0x010000) ? " NICST " : "",
867 (value & 0x020000) ? " NICDU " : "",
868 (value & 0x040000) ? " NICAM muted " : "",
869 (value & 0x080000) ? " NICAM reserve sound " : "",
870
871 (value & 0x100000) ? " init done " : "");
872 }
873
874 done:
875 complete_and_exit(&dev->thread.exit, 0);
876 return 0;
877 }
878
879 /* ------------------------------------------------------------------ */
880 /* common stuff + external entry points */
881
882 static void saa7134_enable_i2s(struct saa7134_dev *dev)
883 {
884 int i2s_format;
885
886 if (!card_is_empress(dev))
887 return;
888 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
889
890 /* enable I2S audio output for the mpeg encoder */
891 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
892 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
893 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
894 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
895 }
896
897 int saa7134_tvaudio_rx2mode(u32 rx)
898 {
899 u32 mode;
900
901 mode = V4L2_TUNER_MODE_MONO;
902 if (rx & V4L2_TUNER_SUB_STEREO)
903 mode = V4L2_TUNER_MODE_STEREO;
904 else if (rx & V4L2_TUNER_SUB_LANG1)
905 mode = V4L2_TUNER_MODE_LANG1;
906 else if (rx & V4L2_TUNER_SUB_LANG2)
907 mode = V4L2_TUNER_MODE_LANG2;
908 return mode;
909 }
910
911 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
912 {
913 switch (dev->pci->device) {
914 case PCI_DEVICE_ID_PHILIPS_SAA7130:
915 case PCI_DEVICE_ID_PHILIPS_SAA7134:
916 mute_input_7134(dev);
917 break;
918 case PCI_DEVICE_ID_PHILIPS_SAA7133:
919 case PCI_DEVICE_ID_PHILIPS_SAA7135:
920 mute_input_7133(dev);
921 break;
922 }
923 }
924
925 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
926 struct saa7134_input *in)
927 {
928 dev->input = in;
929 switch (dev->pci->device) {
930 case PCI_DEVICE_ID_PHILIPS_SAA7130:
931 case PCI_DEVICE_ID_PHILIPS_SAA7134:
932 mute_input_7134(dev);
933 break;
934 case PCI_DEVICE_ID_PHILIPS_SAA7133:
935 case PCI_DEVICE_ID_PHILIPS_SAA7135:
936 mute_input_7133(dev);
937 break;
938 }
939 saa7134_enable_i2s(dev);
940 }
941
942 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
943 {
944 switch (dev->pci->device) {
945 case PCI_DEVICE_ID_PHILIPS_SAA7134:
946 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
947 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
948 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
949 break;
950 }
951 }
952
953 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
954 {
955 int retval = V4L2_TUNER_SUB_MONO;
956
957 switch (dev->pci->device) {
958 case PCI_DEVICE_ID_PHILIPS_SAA7134:
959 if (dev->tvaudio)
960 retval = tvaudio_getstereo(dev,dev->tvaudio);
961 break;
962 case PCI_DEVICE_ID_PHILIPS_SAA7133:
963 case PCI_DEVICE_ID_PHILIPS_SAA7135:
964 retval = getstereo_7133(dev);
965 break;
966 }
967 return retval;
968 }
969
970 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
971 {
972 DECLARE_MUTEX_LOCKED(sem);
973 int (*my_thread)(void *data) = NULL;
974
975 switch (dev->pci->device) {
976 case PCI_DEVICE_ID_PHILIPS_SAA7134:
977 my_thread = tvaudio_thread;
978 break;
979 case PCI_DEVICE_ID_PHILIPS_SAA7133:
980 case PCI_DEVICE_ID_PHILIPS_SAA7135:
981 my_thread = tvaudio_thread_ddep;
982 break;
983 }
984
985 dev->thread.pid = -1;
986 if (my_thread) {
987 /* start tvaudio thread */
988 init_waitqueue_head(&dev->thread.wq);
989 init_completion(&dev->thread.exit);
990 dev->thread.pid = kernel_thread(my_thread,dev,0);
991 if (dev->thread.pid < 0)
992 printk(KERN_WARNING "%s: kernel_thread() failed\n",
993 dev->name);
994 saa7134_tvaudio_do_scan(dev);
995 }
996
997 saa7134_enable_i2s(dev);
998 return 0;
999 }
1000
1001 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1002 {
1003 /* shutdown tvaudio thread */
1004 if (dev->thread.pid >= 0) {
1005 dev->thread.shutdown = 1;
1006 wake_up_interruptible(&dev->thread.wq);
1007 wait_for_completion(&dev->thread.exit);
1008 }
1009 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1010 return 0;
1011 }
1012
1013 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1014 {
1015 if (dev->thread.pid >= 0) {
1016 dev->thread.mode = UNSET;
1017 dev->thread.scan2++;
1018 wake_up_interruptible(&dev->thread.wq);
1019 } else {
1020 dev->automute = 0;
1021 saa7134_tvaudio_setmute(dev);
1022 }
1023 return 0;
1024 }
1025
1026 /* ----------------------------------------------------------- */
1027 /*
1028 * Local variables:
1029 * c-basic-offset: 8
1030 * End:
1031 */
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