Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[linux-2.6] / drivers / media / video / saa7134 / saa7134-tvaudio.c
1 /*
2  *
3  * device driver for philips saa7134 based TV cards
4  * tv audio decoder (fm stereo, nicam, ...)
5  *
6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  *
13  *  This program is distributed in the hope that it will be useful,
14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22
23 #include <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;
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;
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;
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         set_freezable();
481
482         for (;;) {
483                 tvaudio_sleep(dev,-1);
484                 if (kthread_should_stop())
485                         goto done;
486
487         restart:
488                 try_to_freeze();
489
490                 dev->thread.scan1 = dev->thread.scan2;
491                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
492                 dev->tvaudio  = NULL;
493
494                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
495                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
496
497                 if (dev->ctl_automute)
498                         dev->automute = 1;
499
500                 mute_input_7134(dev);
501
502                 /* give the tuner some time */
503                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
504                         goto restart;
505
506                 max1 = 0;
507                 max2 = 0;
508                 nscan = 0;
509                 carrier = 0;
510                 default_carrier = 0;
511                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
512                         if (!(dev->tvnorm->id & mainscan[i].std))
513                                 continue;
514                         if (!default_carrier)
515                                 default_carrier = mainscan[i].carr;
516                         nscan++;
517                 }
518
519                 if (1 == nscan) {
520                         /* only one candidate -- skip scan ;) */
521                         dprintk("only one main carrier candidate - skipping scan\n");
522                         max1 = 12345;
523                         carrier = default_carrier;
524                 } else {
525                         /* scan for the main carrier */
526                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
527                         tvaudio_setmode(dev,&tvaudio[0],NULL);
528                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
529                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
530                                 if (dev->thread.scan1 != dev->thread.scan2)
531                                         goto restart;
532                         }
533                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
534                                 if (max1 < carr_vals[i]) {
535                                         max2 = max1;
536                                         max1 = carr_vals[i];
537                                         carrier = mainscan[i].carr;
538                                 } else if (max2 < carr_vals[i]) {
539                                         max2 = carr_vals[i];
540                                 }
541                         }
542                 }
543
544                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
545                         /* found good carrier */
546                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
547                                 dev->tvnorm->name, carrier/1000, carrier%1000,
548                                 max1, max2);
549                         dev->last_carrier = carrier;
550
551                 } else if (0 != dev->last_carrier) {
552                         /* no carrier -- try last detected one as fallback */
553                         carrier = dev->last_carrier;
554                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
555                                "using %d.%03d MHz [last detected]\n",
556                                dev->name, carrier/1000, carrier%1000);
557
558                 } else {
559                         /* no carrier + no fallback -- use default */
560                         carrier = default_carrier;
561                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
562                                "using %d.%03d MHz [default]\n",
563                                dev->name, carrier/1000, carrier%1000);
564                 }
565                 tvaudio_setcarrier(dev,carrier,carrier);
566                 dev->automute = 0;
567                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
568                 saa7134_tvaudio_setmute(dev);
569                 /* find the exact tv audio norm */
570                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
571                         if (dev->tvnorm->id != UNSET &&
572                                 !(dev->tvnorm->id & tvaudio[i].std))
573                                 continue;
574                         if (tvaudio[i].carr1 != carrier)
575                                 continue;
576                         /* Note: at least the primary carrier is right here */
577                         if (UNSET == audio)
578                                 audio = i;
579                         tvaudio_setmode(dev,&tvaudio[i],"trying");
580                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
581                                 goto restart;
582                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
583                                 audio = i;
584                                 break;
585                         }
586                 }
587                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
588                 if (UNSET == audio)
589                         continue;
590                 tvaudio_setmode(dev,&tvaudio[audio],"using");
591
592                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
593                 dev->tvaudio = &tvaudio[audio];
594
595                 lastmode = 42;
596                 for (;;) {
597
598                         try_to_freeze();
599
600                         if (tvaudio_sleep(dev,5000))
601                                 goto restart;
602                         if (kthread_should_stop())
603                                 break;
604                         if (UNSET == dev->thread.mode) {
605                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
606                                 mode = saa7134_tvaudio_rx2mode(rx);
607                         } else {
608                                 mode = dev->thread.mode;
609                         }
610                         if (lastmode != mode) {
611                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
612                                 lastmode = mode;
613                         }
614                 }
615         }
616
617  done:
618         dev->thread.stopped = 1;
619         return 0;
620 }
621
622 /* ------------------------------------------------------------------ */
623 /* saa7133 / saa7135 code                                             */
624
625 static char *stdres[0x20] = {
626         [0x00] = "no standard detected",
627         [0x01] = "B/G (in progress)",
628         [0x02] = "D/K (in progress)",
629         [0x03] = "M (in progress)",
630
631         [0x04] = "B/G A2",
632         [0x05] = "B/G NICAM",
633         [0x06] = "D/K A2 (1)",
634         [0x07] = "D/K A2 (2)",
635         [0x08] = "D/K A2 (3)",
636         [0x09] = "D/K NICAM",
637         [0x0a] = "L NICAM",
638         [0x0b] = "I NICAM",
639
640         [0x0c] = "M Korea",
641         [0x0d] = "M BTSC ",
642         [0x0e] = "M EIAJ",
643
644         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
645         [0x10] = "FM radio / IF 10.7 / 75 deemp",
646         [0x11] = "FM radio / IF sel / 50 deemp",
647         [0x12] = "FM radio / IF sel / 75 deemp",
648
649         [0x13 ... 0x1e ] = "unknown",
650         [0x1f] = "??? [in progress]",
651 };
652
653 #define DSP_RETRY 32
654 #define DSP_DELAY 16
655 #define SAA7135_DSP_RWCLEAR_RERR 1
656
657 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
658 {
659         int state = saa_readb(SAA7135_DSP_RWSTATE);
660         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
661                 d2printk("%s: resetting error bit\n", dev->name);
662                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
663         }
664         return 0;
665 }
666
667 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
668 {
669         int state, count = DSP_RETRY;
670
671         state = saa_readb(SAA7135_DSP_RWSTATE);
672         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
673                 printk(KERN_WARNING "%s: dsp access error\n", dev->name);
674                 saa_dsp_reset_error_bit(dev);
675                 return -EIO;
676         }
677         while (0 == (state & bit)) {
678                 if (unlikely(0 == count)) {
679                         printk("%s: dsp access wait timeout [bit=%s]\n",
680                                dev->name,
681                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
682                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
683                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
684                                "???");
685                         return -EIO;
686                 }
687                 saa_wait(DSP_DELAY);
688                 state = saa_readb(SAA7135_DSP_RWSTATE);
689                 count--;
690         }
691         return 0;
692 }
693
694
695 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
696 {
697         int err;
698
699         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
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
710 static 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
723 static int mute_input_7133(struct saa7134_dev *dev)
724 {
725         u32 reg = 0;
726         u32 xbarin, xbarout;
727         int mask;
728         struct saa7134_input *in;
729
730         xbarin = 0x03;
731         switch (dev->input->amux) {
732         case TV:
733                 reg = 0x02;
734                 xbarin = 0;
735                 break;
736         case LINE1:
737                 reg = 0x00;
738                 break;
739         case LINE2:
740         case LINE2_LEFT:
741                 reg = 0x09;
742                 break;
743         }
744         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
745         if (dev->ctl_mute) {
746                 reg = 0x07;
747                 xbarout = 0xbbbbbb;
748         } else
749                 xbarout = 0xbbbb10;
750         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
751
752         saa_writel(0x594 >> 2, reg);
753
754
755         /* switch gpio-connected external audio mux */
756         if (0 != card(dev).gpiomask) {
757                 mask = card(dev).gpiomask;
758
759                 if (card(dev).mute.name && dev->ctl_mute)
760                         in = &card(dev).mute;
761                 else
762                         in = dev->input;
763
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);
767         }
768
769         return 0;
770 }
771
772 static int tvaudio_thread_ddep(void *data)
773 {
774         struct saa7134_dev *dev = data;
775         u32 value, norms;
776
777         set_freezable();
778         for (;;) {
779                 tvaudio_sleep(dev,-1);
780                 if (kthread_should_stop())
781                         goto done;
782         restart:
783                 try_to_freeze();
784
785                 dev->thread.scan1 = dev->thread.scan2;
786                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
787
788                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
789                         /* insmod option override */
790                         norms = (audio_ddep << 2) | 0x01;
791                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
792                 } else if (&card(dev).radio == dev->input) {
793                         dprintk("FM Radio\n");
794                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
795                                 norms = (0x11 << 2) | 0x01;
796                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
797                         } else {
798                                 norms = (0x0f << 2) | 0x01;
799                         }
800                 } else {
801                         /* (let chip) scan for sound carrier */
802                         norms = 0;
803                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
804                                 norms |= 0x04;
805                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
806                                 norms |= 0x20;
807                         if (dev->tvnorm->id & V4L2_STD_DK)
808                                 norms |= 0x08;
809                         if (dev->tvnorm->id & V4L2_STD_MN)
810                                 norms |= 0x40;
811                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
812                                 norms |= 0x10;
813                         if (0 == norms)
814                                 norms = 0x7c; /* all */
815                         dprintk("scanning:%s%s%s%s%s\n",
816                                 (norms & 0x04) ? " B/G"  : "",
817                                 (norms & 0x08) ? " D/K"  : "",
818                                 (norms & 0x10) ? " L/L'" : "",
819                                 (norms & 0x20) ? " I"    : "",
820                                 (norms & 0x40) ? " M"    : "");
821                 }
822
823                 /* kick automatic standard detection */
824                 saa_dsp_writel(dev, 0x454 >> 2, 0);
825                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
826
827                 /* setup crossbars */
828                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
829                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
830
831                 if (tvaudio_sleep(dev,3000))
832                         goto restart;
833                 value = saa_readl(0x528 >> 2) & 0xffffff;
834
835                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
836                         value, stdres[value & 0x1f],
837                         (value & 0x000020) ? ",stereo" : "",
838                         (value & 0x000040) ? ",dual"   : "");
839                 dprintk("detailed status: "
840                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
841                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
842                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
843                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
844                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
845
846                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
847                         (value & 0x001000) ? " SAP carrier "            : "",
848                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
849                         (value & 0x004000) ? " SAP noise mute "         : "",
850                         (value & 0x008000) ? " VDSP "                   : "",
851
852                         (value & 0x010000) ? " NICST "                  : "",
853                         (value & 0x020000) ? " NICDU "                  : "",
854                         (value & 0x040000) ? " NICAM muted "            : "",
855                         (value & 0x080000) ? " NICAM reserve sound "    : "",
856
857                         (value & 0x100000) ? " init done "              : "");
858         }
859
860  done:
861         dev->thread.stopped = 1;
862         return 0;
863 }
864
865 /* ------------------------------------------------------------------ */
866 /* common stuff + external entry points                               */
867
868 void saa7134_enable_i2s(struct saa7134_dev *dev)
869 {
870         int i2s_format;
871
872         if (!card_is_empress(dev))
873                 return;
874
875         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
876                 return;
877
878         /* configure GPIO for out */
879         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
880
881         switch (dev->pci->device) {
882         case PCI_DEVICE_ID_PHILIPS_SAA7133:
883         case PCI_DEVICE_ID_PHILIPS_SAA7135:
884             /* Set I2S format (SONY)  */
885             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
886             /* Start I2S */
887             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
888             break;
889
890         case PCI_DEVICE_ID_PHILIPS_SAA7134:
891             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
892
893             /* enable I2S audio output for the mpeg encoder */
894             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
895             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
896             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
897             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
898
899         default:
900             break;
901         }
902 }
903
904 int saa7134_tvaudio_rx2mode(u32 rx)
905 {
906         u32 mode;
907
908         mode = V4L2_TUNER_MODE_MONO;
909         if (rx & V4L2_TUNER_SUB_STEREO)
910                 mode = V4L2_TUNER_MODE_STEREO;
911         else if (rx & V4L2_TUNER_SUB_LANG1)
912                 mode = V4L2_TUNER_MODE_LANG1;
913         else if (rx & V4L2_TUNER_SUB_LANG2)
914                 mode = V4L2_TUNER_MODE_LANG2;
915         return mode;
916 }
917
918 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
919 {
920         switch (dev->pci->device) {
921         case PCI_DEVICE_ID_PHILIPS_SAA7130:
922         case PCI_DEVICE_ID_PHILIPS_SAA7134:
923                 mute_input_7134(dev);
924                 break;
925         case PCI_DEVICE_ID_PHILIPS_SAA7133:
926         case PCI_DEVICE_ID_PHILIPS_SAA7135:
927                 mute_input_7133(dev);
928                 break;
929         }
930 }
931
932 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
933                               struct saa7134_input *in)
934 {
935         dev->input = in;
936         switch (dev->pci->device) {
937         case PCI_DEVICE_ID_PHILIPS_SAA7130:
938         case PCI_DEVICE_ID_PHILIPS_SAA7134:
939                 mute_input_7134(dev);
940                 break;
941         case PCI_DEVICE_ID_PHILIPS_SAA7133:
942         case PCI_DEVICE_ID_PHILIPS_SAA7135:
943                 mute_input_7133(dev);
944                 break;
945         }
946         saa7134_enable_i2s(dev);
947 }
948
949 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
950 {
951         switch (dev->pci->device) {
952         case PCI_DEVICE_ID_PHILIPS_SAA7134:
953                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
954                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
955                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
956                 break;
957         }
958 }
959
960 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
961 {
962         int retval = V4L2_TUNER_SUB_MONO;
963
964         switch (dev->pci->device) {
965         case PCI_DEVICE_ID_PHILIPS_SAA7134:
966                 if (dev->tvaudio)
967                         retval = tvaudio_getstereo(dev,dev->tvaudio);
968                 break;
969         case PCI_DEVICE_ID_PHILIPS_SAA7133:
970         case PCI_DEVICE_ID_PHILIPS_SAA7135:
971                 retval = getstereo_7133(dev);
972                 break;
973         }
974         return retval;
975 }
976
977 void saa7134_tvaudio_init(struct saa7134_dev *dev)
978 {
979         int clock = saa7134_boards[dev->board].audio_clock;
980
981         if (UNSET != audio_clock_override)
982                 clock = audio_clock_override;
983
984         switch (dev->pci->device) {
985         case PCI_DEVICE_ID_PHILIPS_SAA7134:
986                 /* init all audio registers */
987                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
988                 if (need_resched())
989                         schedule();
990                 else
991                         udelay(10);
992
993                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
994                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
995                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
996                 /* frame locked audio is mandatory for NICAM */
997                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
998                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
999                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1000                 break;
1001         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1002         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1003                 saa_writel(0x598 >> 2, clock);
1004                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1005                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1006         }
1007 }
1008
1009 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1010 {
1011         int (*my_thread)(void *data) = NULL;
1012
1013         switch (dev->pci->device) {
1014         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1015                 my_thread = tvaudio_thread;
1016                 break;
1017         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1018         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1019                 my_thread = tvaudio_thread_ddep;
1020                 break;
1021         }
1022
1023         dev->thread.thread = NULL;
1024         if (my_thread) {
1025                 saa7134_tvaudio_init(dev);
1026                 /* start tvaudio thread */
1027                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1028                 if (IS_ERR(dev->thread.thread)) {
1029                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
1030                                dev->name);
1031                         /* XXX: missing error handling here */
1032                 }
1033                 saa7134_tvaudio_do_scan(dev);
1034         }
1035
1036         saa7134_enable_i2s(dev);
1037         return 0;
1038 }
1039
1040 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1041 {
1042         /* shutdown tvaudio thread */
1043         if (dev->thread.thread && !dev->thread.stopped)
1044                 kthread_stop(dev->thread.thread);
1045
1046         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1047         return 0;
1048 }
1049
1050 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1051 {
1052         if (dev->input->amux != TV) {
1053                 dprintk("sound IF not in use, skipping scan\n");
1054                 dev->automute = 0;
1055                 saa7134_tvaudio_setmute(dev);
1056         } else if (dev->thread.thread) {
1057                 dev->thread.mode = UNSET;
1058                 dev->thread.scan2++;
1059
1060                 if (!dev->insuspend && !dev->thread.stopped)
1061                         wake_up_process(dev->thread.thread);
1062         } else {
1063                 dev->automute = 0;
1064                 saa7134_tvaudio_setmute(dev);
1065         }
1066         return 0;
1067 }
1068
1069 EXPORT_SYMBOL(saa_dsp_writel);
1070 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1071
1072 /* ----------------------------------------------------------- */
1073 /*
1074  * Local variables:
1075  * c-basic-offset: 8
1076  * End:
1077  */