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