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Merge git://www.linux-watchdog.org/linux-watchdog
[linux-2.6-block.git] / drivers / media / pci / saa7134 / saa7134-tvaudio.c
CommitLineData
1da177e4 1/*
1da177e4
LT		 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
9a12ccfc
MCC		 23#include "saa7134.h"
24#include "saa7134-reg.h"
25
1da177e4
LT		 26#include <linux/init.h>
27#include <linux/list.h>
28#include <linux/module.h>
1da177e4 29#include <linux/kernel.h>
3e0e38e6 30#include <linux/kthread.h>
1da177e4 31#include <linux/delay.h>
ea63d0b1 32#include <linux/freezer.h>
1da177e4
LT		 33#include <asm/div64.h>
34
1da177e4
LT		 35/* ------------------------------------------------------------------ */
36
ff699e6b 37static unsigned int audio_debug;
1da177e4
LT		 38module_param(audio_debug, int, 0644);
39MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
40
ff699e6b 41static unsigned int audio_ddep;
1da177e4
LT		 42module_param(audio_ddep, int, 0644);
43MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
44
45static int audio_clock_override = UNSET;
46module_param(audio_clock_override, int, 0644);
47
ff699e6b 48static int audio_clock_tweak;
1da177e4
LT		 49module_param(audio_clock_tweak, int, 0644);
50MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
51
45f38cb3
MCC		 52#define audio_dbg(level, fmt, arg...) do { \
53 if (audio_debug >= level) \
54 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
55 } while (0)
1da177e4
LT		 56
57/* msecs */
58#define SCAN_INITIAL_DELAY 1000
59#define SCAN_SAMPLE_DELAY 200
60#define SCAN_SUBCARRIER_DELAY 2000
61
62/* ------------------------------------------------------------------ */
63/* saa7134 code */
64
65static struct mainscan {
66 char *name;
67 v4l2_std_id std;
68 int carr;
69} mainscan[] = {
70 {
17b10a73
HH		 71 .name = "MN",
72 .std = V4L2_STD_MN,
1da177e4
LT		 73 .carr = 4500,
74 },{
17b10a73
HH		 75 .name = "BGH",
76 .std = V4L2_STD_B | V4L2_STD_GH,
1da177e4
LT		 77 .carr = 5500,
78 },{
79 .name = "I",
80 .std = V4L2_STD_PAL_I,
81 .carr = 6000,
82 },{
83 .name = "DKL",
17b10a73 84 .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
1da177e4
LT		 85 .carr = 6500,
86 }
87};
88
89static struct saa7134_tvaudio tvaudio[] = {
90 {
91 .name = "PAL-B/G FM-stereo",
17b10a73 92 .std = V4L2_STD_PAL_BG,
1da177e4
LT		 93 .mode = TVAUDIO_FM_BG_STEREO,
94 .carr1 = 5500,
95 .carr2 = 5742,
96 },{
97 .name = "PAL-D/K1 FM-stereo",
17b10a73 98 .std = V4L2_STD_PAL_DK,
1da177e4
LT		 99 .carr1 = 6500,
100 .carr2 = 6258,
101 .mode = TVAUDIO_FM_BG_STEREO,
102 },{
103 .name = "PAL-D/K2 FM-stereo",
17b10a73 104 .std = V4L2_STD_PAL_DK,
1da177e4
LT		 105 .carr1 = 6500,
106 .carr2 = 6742,
107 .mode = TVAUDIO_FM_BG_STEREO,
108 },{
109 .name = "PAL-D/K3 FM-stereo",
17b10a73 110 .std = V4L2_STD_PAL_DK,
1da177e4
LT		 111 .carr1 = 6500,
112 .carr2 = 5742,
113 .mode = TVAUDIO_FM_BG_STEREO,
114 },{
115 .name = "PAL-B/G NICAM",
17b10a73 116 .std = V4L2_STD_PAL_BG,
1da177e4
LT		 117 .carr1 = 5500,
118 .carr2 = 5850,
119 .mode = TVAUDIO_NICAM_FM,
120 },{
121 .name = "PAL-I NICAM",
17b10a73 122 .std = V4L2_STD_PAL_I,
1da177e4
LT		 123 .carr1 = 6000,
124 .carr2 = 6552,
125 .mode = TVAUDIO_NICAM_FM,
126 },{
127 .name = "PAL-D/K NICAM",
17b10a73 128 .std = V4L2_STD_PAL_DK,
1da177e4
LT		 129 .carr1 = 6500,
130 .carr2 = 5850,
131 .mode = TVAUDIO_NICAM_FM,
132 },{
133 .name = "SECAM-L NICAM",
17b10a73 134 .std = V4L2_STD_SECAM_L,
1da177e4
LT		 135 .carr1 = 6500,
136 .carr2 = 5850,
137 .mode = TVAUDIO_NICAM_AM,
f7d66e82 138 },{
17b10a73
HH		 139 .name = "SECAM-D/K NICAM",
140 .std = V4L2_STD_SECAM_DK,
f7d66e82 141 .carr1 = 6500,
17b10a73
HH		 142 .carr2 = 5850,
143 .mode = TVAUDIO_NICAM_FM,
1da177e4 144 },{
17b10a73
HH		 145 .name = "NTSC-A2 FM-stereo",
146 .std = V4L2_STD_NTSC,
147 .carr1 = 4500,
148 .carr2 = 4724,
149 .mode = TVAUDIO_FM_K_STEREO,
1da177e4
LT		 150 },{
151 .name = "NTSC-M",
152 .std = V4L2_STD_NTSC,
153 .carr1 = 4500,
154 .carr2 = -1,
155 .mode = TVAUDIO_FM_MONO,
1da177e4
LT		 156 }
157};
80297125 158#define TVAUDIO ARRAY_SIZE(tvaudio)
1da177e4
LT		 159
160/* ------------------------------------------------------------------ */
161
1da177e4
LT		 162static u32 tvaudio_carr2reg(u32 carrier)
163{
164 u64 a = carrier;
165
166 a <<= 24;
167 do_div(a,12288);
168 return a;
169}
170
171static void tvaudio_setcarrier(struct saa7134_dev *dev,
172 int primary, int secondary)
173{
174 if (-1 == secondary)
175 secondary = primary;
176 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
177 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
178}
179
1eaad5b1
NS		 180#define SAA7134_MUTE_MASK 0xbb
181#define SAA7134_MUTE_ANALOG 0x04
182#define SAA7134_MUTE_I2S 0x40
183
1da177e4
LT		 184static void mute_input_7134(struct saa7134_dev *dev)
185{
186 unsigned int mute;
187 struct saa7134_input *in;
188 int ausel=0, ics=0, ocs=0;
189 int mask;
190
191 /* look what is to do ... */
192 in = dev->input;
193 mute = (dev->ctl_mute ||
194 (dev->automute && (&card(dev).radio) != in));
330a115a
MCC		 195 if (card(dev).mute.name) {
196 /*
197 * 7130 - we'll mute using some unconnected audio input
198 * 7134 - we'll probably should switch external mux with gpio
199 */
1da177e4
LT		 200 if (mute)
201 in = &card(dev).mute;
202 }
330a115a 203
1da177e4 204 if (dev->hw_mute == mute &&
c458473e 205 dev->hw_input == in && !dev->insuspend) {
e67bcf3e
MCC		 206 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
207 mute, in->name);
1da177e4
LT		 208 return;
209 }
210
e67bcf3e
MCC		 211 audio_dbg(1, "ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
212 dev->ctl_mute, dev->automute,
213 dev->input->name, mute, in->name);
1da177e4
LT		 214 dev->hw_mute = mute;
215 dev->hw_input = in;
216
217 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
218 /* 7134 mute */
1eaad5b1 219 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
4ac97914 220 SAA7134_MUTE_MASK |
1eaad5b1
NS		 221 SAA7134_MUTE_ANALOG |
222 SAA7134_MUTE_I2S :
223 SAA7134_MUTE_MASK);
1da177e4
LT		 224
225 /* switch internal audio mux */
226 switch (in->amux) {
227 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
228 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
229 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
230 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
231 }
232 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
233 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
234 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
ac19ecc6
MCC		 235 // for oss, we need to change the clock configuration
236 if (in->amux == TV)
237 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
238 else
239 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01);
1da177e4
LT		 240
241 /* switch gpio-connected external audio mux */
242 if (0 == card(dev).gpiomask)
243 return;
330a115a 244
1da177e4
LT		 245 mask = card(dev).gpiomask;
246 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
247 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
248 saa7134_track_gpio(dev,in->name);
249}
250
251static void tvaudio_setmode(struct saa7134_dev *dev,
252 struct saa7134_tvaudio *audio,
253 char *note)
254{
255 int acpf, tweak = 0;
256
257 if (dev->tvnorm->id == V4L2_STD_NTSC) {
258 acpf = 0x19066;
259 } else {
260 acpf = 0x1e000;
261 }
262 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
263 tweak = audio_clock_tweak;
264
265 if (note)
e67bcf3e
MCC		 266 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
267 note, audio->name,
1da177e4
LT		 268 audio->carr1 / 1000, audio->carr1 % 1000,
269 audio->carr2 / 1000, audio->carr2 % 1000,
270 acpf, tweak);
271
272 acpf += tweak;
273 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
274 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
275 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
276 tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
277
278 switch (audio->mode) {
279 case TVAUDIO_FM_MONO:
280 case TVAUDIO_FM_BG_STEREO:
281 saa_writeb(SAA7134_DEMODULATOR, 0x00);
282 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
283 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
284 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
285 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
286 break;
287 case TVAUDIO_FM_K_STEREO:
288 saa_writeb(SAA7134_DEMODULATOR, 0x00);
289 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
290 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
291 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
292 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
293 break;
294 case TVAUDIO_NICAM_FM:
295 saa_writeb(SAA7134_DEMODULATOR, 0x10);
296 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
297 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
298 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
299 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
300 break;
301 case TVAUDIO_NICAM_AM:
302 saa_writeb(SAA7134_DEMODULATOR, 0x12);
303 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
304 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
305 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
306 saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
307 break;
308 case TVAUDIO_FM_SAT_STEREO:
309 /* not implemented (yet) */
310 break;
311 }
312}
313
314static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
315{
3e0e38e6
CH		 316 if (dev->thread.scan1 == dev->thread.scan2 &&
317 !kthread_should_stop()) {
1da177e4
LT		 318 if (timeout < 0) {
319 set_current_state(TASK_INTERRUPTIBLE);
320 schedule();
321 } else {
8b93ec77
NA		 322 schedule_timeout_interruptible
323 (msecs_to_jiffies(timeout));
1da177e4
LT		 324 }
325 }
1da177e4
LT		 326 return dev->thread.scan1 != dev->thread.scan2;
327}
328
329static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
330{
331 __s32 left,right,value;
332
a1dca1e3
SS		 333 if (!(dev->tvnorm->id & scan->std)) {
334 value = 0;
e67bcf3e
MCC		 335 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
336 scan->carr / 1000, scan->carr % 1000, scan->name);
a1dca1e3
SS		 337 return 0;
338 }
339
1da177e4
LT		 340 if (audio_debug > 1) {
341 int i;
e67bcf3e 342 audio_dbg(1, "debug %d:", scan->carr);
1da177e4
LT		 343 for (i = -150; i <= 150; i += 30) {
344 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
345 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
346 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
347 return -1;
348 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
349 if (0 == i)
6139ebc6 350 pr_cont(" # %6d # ", value >> 16);
1da177e4 351 else
6139ebc6 352 pr_cont(" %6d", value >> 16);
1da177e4 353 }
e67bcf3e 354 pr_cont("\n");
1da177e4 355 }
a1dca1e3
SS		 356
357 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
358 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
359 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
360 return -1;
361 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
362
363 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
364 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
365 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
366 return -1;
367 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
368
369 left >>= 16;
370 right >>= 16;
371 value = left > right ? left - right : right - left;
e67bcf3e
MCC		 372 audio_dbg(1, "scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
373 scan->carr / 1000, scan->carr % 1000,
374 scan->name, value, left, right);
1da177e4
LT		 375 return value;
376}
377
1da177e4
LT		 378
379static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
380{
330a115a 381 __u32 idp, nicam, nicam_status;
1da177e4
LT		 382 int retval = -1;
383
384 switch (audio->mode) {
385 case TVAUDIO_FM_MONO:
386 return V4L2_TUNER_SUB_MONO;
387 case TVAUDIO_FM_K_STEREO:
388 case TVAUDIO_FM_BG_STEREO:
389 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
e67bcf3e 390 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
1da177e4
LT		 391 if (0x03 == (idp & 0x03))
392 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
393 else if (0x05 == (idp & 0x05))
394 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
395 else if (0x01 == (idp & 0x01))
396 retval = V4L2_TUNER_SUB_MONO;
397 break;
398 case TVAUDIO_FM_SAT_STEREO:
399 /* not implemented (yet) */
400 break;
401 case TVAUDIO_NICAM_FM:
402 case TVAUDIO_NICAM_AM:
330a115a 403 nicam = saa_readb(SAA7134_AUDIO_STATUS);
e67bcf3e 404 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
330a115a
MCC		 405 if (nicam & 0x1) {
406 nicam_status = saa_readb(SAA7134_NICAM_STATUS);
6139ebc6
MCC		 407 audio_dbg(1, "getstereo: nicam_status=0x%x\n",
408 nicam_status);
330a115a
MCC		 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 */
1da177e4
LT		 422 }
423 break;
424 }
425 if (retval != -1)
e67bcf3e 426 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
1da177e4
LT		 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
434static 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",
301e22d6 442 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2",
1da177e4
LT		 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 */
301e22d6 449 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */
1da177e4
LT		 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:
330a115a
MCC		 459 case TVAUDIO_NICAM_AM:
460 case TVAUDIO_NICAM_FM:
e67bcf3e
MCC		 461 audio_dbg(1, "setstereo [fm] => %s\n",
462 name[mode % ARRAY_SIZE(name)]);
1da177e4
LT		 463 reg = fm[ mode % ARRAY_SIZE(fm) ];
464 saa_writeb(SAA7134_FM_DEMATRIX, reg);
465 break;
466 case TVAUDIO_FM_SAT_STEREO:
330a115a 467 /* Not implemented */
1da177e4
LT		 468 break;
469 }
470 return 0;
471}
472
473static 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
ea63d0b1
ML		 480 set_freezable();
481
1da177e4
LT		 482 for (;;) {
483 tvaudio_sleep(dev,-1);
ea63d0b1 484 if (kthread_should_stop())
1da177e4
LT		 485 goto done;
486
487 restart:
ea63d0b1
ML		 488 try_to_freeze();
489
1da177e4 490 dev->thread.scan1 = dev->thread.scan2;
e67bcf3e
MCC		 491 audio_dbg(1, "tvaudio thread scan start [%d]\n",
492 dev->thread.scan1);
1da177e4 493 dev->tvaudio = NULL;
f36224d3
ML		 494
495 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
496 saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
497
1da177e4
LT		 498 if (dev->ctl_automute)
499 dev->automute = 1;
f36224d3 500
1da177e4
LT		 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 ;) */
e67bcf3e 522 audio_dbg(1, "only one main carrier candidate - skipping scan\n");
1da177e4
LT		 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 */
e67bcf3e
MCC		 547 audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
548 dev->tvnorm->name, carrier/1000, carrier%1000,
549 max1, max2);
1da177e4 550 dev->last_carrier = carrier;
a1dca1e3 551 dev->automute = 0;
1da177e4
LT		 552
553 } else if (0 != dev->last_carrier) {
554 /* no carrier -- try last detected one as fallback */
555 carrier = dev->last_carrier;
e67bcf3e
MCC		 556 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
557 carrier/1000, carrier%1000);
a1dca1e3 558 dev->automute = 1;
1da177e4
LT		 559
560 } else {
561 /* no carrier + no fallback -- use default */
562 carrier = default_carrier;
e67bcf3e
MCC		 563 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
564 carrier/1000, carrier%1000);
a1dca1e3 565 dev->automute = 1;
1da177e4
LT		 566 }
567 tvaudio_setcarrier(dev,carrier,carrier);
1da177e4
LT		 568 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
569 saa7134_tvaudio_setmute(dev);
1da177e4
LT		 570 /* find the exact tv audio norm */
571 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
572 if (dev->tvnorm->id != UNSET &&
330a115a 573 !(dev->tvnorm->id & tvaudio[i].std))
1da177e4
LT		 574 continue;
575 if (tvaudio[i].carr1 != carrier)
576 continue;
17b10a73 577 /* Note: at least the primary carrier is right here */
1da177e4
LT		 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");
17b10a73 592
1da177e4
LT		 593 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
594 dev->tvaudio = &tvaudio[audio];
595
596 lastmode = 42;
597 for (;;) {
ea63d0b1
ML		 598
599 try_to_freeze();
600
1da177e4
LT		 601 if (tvaudio_sleep(dev,5000))
602 goto restart;
ea63d0b1 603 if (kthread_should_stop())
1da177e4
LT		 604 break;
605 if (UNSET == dev->thread.mode) {
e82db75d 606 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
1da177e4
LT		 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:
ea63d0b1 619 dev->thread.stopped = 1;
1da177e4
LT		 620 return 0;
621}
622
623/* ------------------------------------------------------------------ */
624/* saa7133 / saa7135 code */
625
626static 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
867bc6cc
HH		 656#define SAA7135_DSP_RWCLEAR_RERR 1
657
658static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
659{
660 int state = saa_readb(SAA7135_DSP_RWSTATE);
661 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
e67bcf3e 662 audio_dbg(2, "%s: resetting error bit\n", dev->name);
867bc6cc
HH		 663 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
664 }
665 return 0;
666}
1da177e4
LT		 667
668static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
669{
670 int state, count = DSP_RETRY;
671
672 state = saa_readb(SAA7135_DSP_RWSTATE);
673 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
83582009 674 pr_warn("%s: dsp access error\n", dev->name);
867bc6cc 675 saa_dsp_reset_error_bit(dev);
1da177e4
LT		 676 return -EIO;
677 }
678 while (0 == (state & bit)) {
679 if (unlikely(0 == count)) {
2bb3e2ee
MCC		 680 pr_err("dsp access wait timeout [bit=%s]\n",
681 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
682 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
683 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
684 "???");
1da177e4
LT		 685 return -EIO;
686 }
687 saa_wait(DSP_DELAY);
688 state = saa_readb(SAA7135_DSP_RWSTATE);
689 count--;
690 }
691 return 0;
692}
693
1da177e4
LT		 694
695int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
696{
697 int err;
698
e67bcf3e 699 audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
1da177e4
LT		 700 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
701 if (err < 0)
702 return err;
703 saa_writel(reg,value);
704 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
705 if (err < 0)
706 return err;
707 return 0;
708}
709
710static int getstereo_7133(struct saa7134_dev *dev)
711{
712 int retval = V4L2_TUNER_SUB_MONO;
713 u32 value;
714
715 value = saa_readl(0x528 >> 2);
716 if (value & 0x20)
717 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
718 if (value & 0x40)
719 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
720 return retval;
721}
722
723static int mute_input_7133(struct saa7134_dev *dev)
724{
725 u32 reg = 0;
330a115a 726 u32 xbarin, xbarout;
1da177e4 727 int mask;
330a115a 728 struct saa7134_input *in;
1da177e4 729
330a115a 730 xbarin = 0x03;
1da177e4
LT		 731 switch (dev->input->amux) {
732 case TV:
733 reg = 0x02;
330a115a 734 xbarin = 0;
1da177e4
LT		 735 break;
736 case LINE1:
737 reg = 0x00;
738 break;
739 case LINE2:
740 case LINE2_LEFT:
330a115a 741 reg = 0x09;
1da177e4
LT		 742 break;
743 }
330a115a
MCC		 744 saa_dsp_writel(dev, 0x464 >> 2, xbarin);
745 if (dev->ctl_mute) {
1da177e4 746 reg = 0x07;
330a115a
MCC		 747 xbarout = 0xbbbbbb;
748 } else
749 xbarout = 0xbbbb10;
750 saa_dsp_writel(dev, 0x46c >> 2, xbarout);
751
1da177e4
LT		 752 saa_writel(0x594 >> 2, reg);
753
330a115a 754
1da177e4 755 /* switch gpio-connected external audio mux */
4ac97914
MCC		 756 if (0 != card(dev).gpiomask) {
757 mask = card(dev).gpiomask;
330a115a
MCC		 758
759 if (card(dev).mute.name && dev->ctl_mute)
760 in = &card(dev).mute;
761 else
762 in = dev->input;
763
4ac97914
MCC		 764 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
765 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
766 saa7134_track_gpio(dev,in->name);
1da177e4 767 }
330a115a 768
1da177e4
LT		 769 return 0;
770}
771
772static int tvaudio_thread_ddep(void *data)
773{
774 struct saa7134_dev *dev = data;
f36224d3 775 u32 value, norms;
1da177e4 776
ea63d0b1 777 set_freezable();
1da177e4
LT		 778 for (;;) {
779 tvaudio_sleep(dev,-1);
ea63d0b1 780 if (kthread_should_stop())
1da177e4 781 goto done;
1da177e4 782 restart:
ea63d0b1
ML		 783 try_to_freeze();
784
1da177e4 785 dev->thread.scan1 = dev->thread.scan2;
e67bcf3e
MCC		 786 audio_dbg(1, "tvaudio thread scan start [%d]\n",
787 dev->thread.scan1);
1da177e4
LT		 788
789 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
790 /* insmod option override */
791 norms = (audio_ddep << 2) | 0x01;
e67bcf3e
MCC		 792 audio_dbg(1, "ddep override: %s\n",
793 stdres[audio_ddep]);
1da177e4 794 } else if (&card(dev).radio == dev->input) {
e67bcf3e 795 audio_dbg(1, "FM Radio\n");
0f79c363
HH		 796 if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
797 norms = (0x11 << 2) | 0x01;
34fe2784 798 /* set IF frequency to 5.5 MHz */
0f79c363
HH		 799 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
800 } else {
801 norms = (0x0f << 2) | 0x01;
802 }
1da177e4
LT		 803 } else {
804 /* (let chip) scan for sound carrier */
805 norms = 0;
17b10a73
HH		 806 if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
807 norms |= 0x04;
808 if (dev->tvnorm->id & V4L2_STD_PAL_I)
809 norms |= 0x20;
810 if (dev->tvnorm->id & V4L2_STD_DK)
811 norms |= 0x08;
812 if (dev->tvnorm->id & V4L2_STD_MN)
813 norms |= 0x40;
814 if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
815 norms |= 0x10;
1da177e4
LT		 816 if (0 == norms)
817 norms = 0x7c; /* all */
e67bcf3e
MCC		 818 audio_dbg(1, "scanning:%s%s%s%s%s\n",
819 (norms & 0x04) ? " B/G" : "",
820 (norms & 0x08) ? " D/K" : "",
821 (norms & 0x10) ? " L/L'" : "",
822 (norms & 0x20) ? " I" : "",
823 (norms & 0x40) ? " M" : "");
1da177e4
LT		 824 }
825
826 /* kick automatic standard detection */
827 saa_dsp_writel(dev, 0x454 >> 2, 0);
828 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
829
830 /* setup crossbars */
831 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
832 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
833
834 if (tvaudio_sleep(dev,3000))
835 goto restart;
836 value = saa_readl(0x528 >> 2) & 0xffffff;
837
e67bcf3e
MCC		 838 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
839 value, stdres[value & 0x1f],
840 (value & 0x000020) ? ",stereo" : "",
841 (value & 0x000040) ? ",dual" : "");
842 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
843 (value & 0x000080) ? " A2/EIAJ pilot tone " : "",
844 (value & 0x000100) ? " A2/EIAJ dual " : "",
845 (value & 0x000200) ? " A2/EIAJ stereo " : "",
846 (value & 0x000400) ? " A2/EIAJ noise mute " : "",
847
848 (value & 0x000800) ? " BTSC/FM radio pilot " : "",
849 (value & 0x001000) ? " SAP carrier " : "",
850 (value & 0x002000) ? " BTSC stereo noise mute " : "",
851 (value & 0x004000) ? " SAP noise mute " : "",
852 (value & 0x008000) ? " VDSP " : "",
853
854 (value & 0x010000) ? " NICST " : "",
855 (value & 0x020000) ? " NICDU " : "",
856 (value & 0x040000) ? " NICAM muted " : "",
857 (value & 0x080000) ? " NICAM reserve sound " : "",
858
859 (value & 0x100000) ? " init done " : "");
1da177e4
LT		 860 }
861
862 done:
ea63d0b1 863 dev->thread.stopped = 1;
1da177e4
LT		 864 return 0;
865}
866
867/* ------------------------------------------------------------------ */
868/* common stuff + external entry points */
869
cb71201f 870void saa7134_enable_i2s(struct saa7134_dev *dev)
1da177e4
LT		 871{
872 int i2s_format;
873
874 if (!card_is_empress(dev))
875 return;
1da177e4 876
37df96d3
DB		 877 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
878 return;
879
880 /* configure GPIO for out */
881 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
882
883 switch (dev->pci->device) {
884 case PCI_DEVICE_ID_PHILIPS_SAA7133:
885 case PCI_DEVICE_ID_PHILIPS_SAA7135:
886 /* Set I2S format (SONY)  */
887 saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
f808a9e3 888 /* Start I2S */
37df96d3 889 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
f808a9e3 890 break;
37df96d3
DB		 891
892 case PCI_DEVICE_ID_PHILIPS_SAA7134:
f808a9e3
DB		 893 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
894
895 /* enable I2S audio output for the mpeg encoder */
37df96d3
DB		 896 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
897 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
898 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
899 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
900
901 default:
902 break;
f808a9e3 903 }
1da177e4
LT		 904}
905
906int saa7134_tvaudio_rx2mode(u32 rx)
907{
908 u32 mode;
909
910 mode = V4L2_TUNER_MODE_MONO;
911 if (rx & V4L2_TUNER_SUB_STEREO)
912 mode = V4L2_TUNER_MODE_STEREO;
913 else if (rx & V4L2_TUNER_SUB_LANG1)
914 mode = V4L2_TUNER_MODE_LANG1;
915 else if (rx & V4L2_TUNER_SUB_LANG2)
916 mode = V4L2_TUNER_MODE_LANG2;
917 return mode;
918}
919
920void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
921{
922 switch (dev->pci->device) {
923 case PCI_DEVICE_ID_PHILIPS_SAA7130:
924 case PCI_DEVICE_ID_PHILIPS_SAA7134:
925 mute_input_7134(dev);
926 break;
927 case PCI_DEVICE_ID_PHILIPS_SAA7133:
928 case PCI_DEVICE_ID_PHILIPS_SAA7135:
929 mute_input_7133(dev);
930 break;
931 }
932}
933
934void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
935 struct saa7134_input *in)
936{
937 dev->input = in;
938 switch (dev->pci->device) {
939 case PCI_DEVICE_ID_PHILIPS_SAA7130:
940 case PCI_DEVICE_ID_PHILIPS_SAA7134:
941 mute_input_7134(dev);
942 break;
943 case PCI_DEVICE_ID_PHILIPS_SAA7133:
944 case PCI_DEVICE_ID_PHILIPS_SAA7135:
945 mute_input_7133(dev);
946 break;
947 }
948 saa7134_enable_i2s(dev);
949}
950
951void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
952{
953 switch (dev->pci->device) {
954 case PCI_DEVICE_ID_PHILIPS_SAA7134:
955 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
956 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
957 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
958 break;
959 }
960}
961
962int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
963{
964 int retval = V4L2_TUNER_SUB_MONO;
965
966 switch (dev->pci->device) {
967 case PCI_DEVICE_ID_PHILIPS_SAA7134:
968 if (dev->tvaudio)
969 retval = tvaudio_getstereo(dev,dev->tvaudio);
970 break;
971 case PCI_DEVICE_ID_PHILIPS_SAA7133:
972 case PCI_DEVICE_ID_PHILIPS_SAA7135:
973 retval = getstereo_7133(dev);
974 break;
975 }
976 return retval;
977}
978
f36224d3
ML		 979void saa7134_tvaudio_init(struct saa7134_dev *dev)
980{
981 int clock = saa7134_boards[dev->board].audio_clock;
982
983 if (UNSET != audio_clock_override)
984 clock = audio_clock_override;
985
986 switch (dev->pci->device) {
987 case PCI_DEVICE_ID_PHILIPS_SAA7134:
988 /* init all audio registers */
989 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
990 if (need_resched())
991 schedule();
992 else
993 udelay(10);
994
995 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
996 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
997 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
998 /* frame locked audio is mandatory for NICAM */
999 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
1000 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
1001 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1002 break;
1003 case PCI_DEVICE_ID_PHILIPS_SAA7133:
1004 case PCI_DEVICE_ID_PHILIPS_SAA7135:
1005 saa_writel(0x598 >> 2, clock);
1006 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1007 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1008 }
1009}
1010
1da177e4
LT		 1011int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1012{
1da177e4
LT		 1013 int (*my_thread)(void *data) = NULL;
1014
1015 switch (dev->pci->device) {
1016 case PCI_DEVICE_ID_PHILIPS_SAA7134:
1017 my_thread = tvaudio_thread;
1018 break;
1019 case PCI_DEVICE_ID_PHILIPS_SAA7133:
1020 case PCI_DEVICE_ID_PHILIPS_SAA7135:
1021 my_thread = tvaudio_thread_ddep;
1022 break;
1023 }
1024
3e0e38e6 1025 dev->thread.thread = NULL;
a1dca1e3 1026 dev->thread.scan1 = dev->thread.scan2 = 0;
1da177e4 1027 if (my_thread) {
f36224d3 1028 saa7134_tvaudio_init(dev);
1da177e4 1029 /* start tvaudio thread */
3e0e38e6
CH		 1030 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1031 if (IS_ERR(dev->thread.thread)) {
83582009 1032 pr_warn("%s: kernel_thread() failed\n",
1da177e4 1033 dev->name);
3e0e38e6
CH		 1034 /* XXX: missing error handling here */
1035 }
1da177e4
LT		 1036 }
1037
1038 saa7134_enable_i2s(dev);
1039 return 0;
1040}
1041
a1dca1e3
SS		 1042int saa7134_tvaudio_close(struct saa7134_dev *dev)
1043{
1044 dev->automute = 1;
1045 /* anything else to undo? */
1046 return 0;
1047}
1048
1da177e4
LT		 1049int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1050{
1051 /* shutdown tvaudio thread */
ea63d0b1 1052 if (dev->thread.thread && !dev->thread.stopped)
3e0e38e6
CH		 1053 kthread_stop(dev->thread.thread);
1054
1da177e4
LT		 1055 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1056 return 0;
1057}
1058
1059int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1060{
17b10a73 1061 if (dev->input->amux != TV) {
e67bcf3e 1062 audio_dbg(1, "sound IF not in use, skipping scan\n");
17b10a73
HH		 1063 dev->automute = 0;
1064 saa7134_tvaudio_setmute(dev);
3e0e38e6 1065 } else if (dev->thread.thread) {
1da177e4
LT		 1066 dev->thread.mode = UNSET;
1067 dev->thread.scan2++;
ea63d0b1
ML		 1068
1069 if (!dev->insuspend && !dev->thread.stopped)
1070 wake_up_process(dev->thread.thread);
1da177e4
LT		 1071 } else {
1072 dev->automute = 0;
1073 saa7134_tvaudio_setmute(dev);
1074 }
1075 return 0;
1076}
1077
79dd0c69 1078EXPORT_SYMBOL(saa_dsp_writel);
e9f964da 1079EXPORT_SYMBOL(saa7134_tvaudio_setmute);
Linux 6.x block layer and io_uring tree(s)