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RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / sound / aoa / codecs / snd-aoa-codec-onyx.c
blobded516717940b1d1cba175775cde0ea6aea3a16f
1 /*
2 * Apple Onboard Audio driver for Onyx codec
3 *
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * GPL v2, can be found in COPYING.
7 *
8 *
9 * This is a driver for the pcm3052 codec chip (codenamed Onyx)
10 * that is present in newer Apple hardware (with digital output).
11 *
12 * The Onyx codec has the following connections (listed by the bit
13 * to be used in aoa_codec.connected):
14 * 0: analog output
15 * 1: digital output
16 * 2: line input
17 * 3: microphone input
18 * Note that even though I know of no machine that has for example
19 * the digital output connected but not the analog, I have handled
20 * all the different cases in the code so that this driver may serve
21 * as a good example of what to do.
22 *
23 * NOTE: This driver assumes that there's at most one chip to be
24 * used with one alsa card, in form of creating all kinds
25 * of mixer elements without regard for their existence.
26 * But snd-aoa assumes that there's at most one card, so
27 * this means you can only have one onyx on a system. This
28 * should probably be fixed by changing the assumption of
29 * having just a single card on a system, and making the
30 * 'card' pointer accessible to anyone who needs it instead
31 * of hiding it in the aoa_snd_* functions...
32 *
33 */
34 #include <linux/delay.h>
35 #include <linux/module.h>
36 MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
37 MODULE_LICENSE("GPL");
38 MODULE_DESCRIPTION("pcm3052 (onyx) codec driver for snd-aoa");
39
40 #include "snd-aoa-codec-onyx.h"
41 #include "../aoa.h"
42 #include "../soundbus/soundbus.h"
43
44
45 #define PFX "snd-aoa-codec-onyx: "
46
47 struct onyx {
48 /* cache registers 65 to 80, they are write-only! */
49 u8 cache[16];
50 struct i2c_client i2c;
51 struct aoa_codec codec;
52 u32 initialised:1,
53 spdif_locked:1,
54 analog_locked:1,
55 original_mute:2;
56 int open_count;
57 struct codec_info *codec_info;
58
59 /* mutex serializes concurrent access to the device
60 * and this structure.
61 */
62 struct mutex mutex;
63 };
64 #define codec_to_onyx(c) container_of(c, struct onyx, codec)
65
66 /* both return 0 if all ok, else on error */
67 static int onyx_read_register(struct onyx *onyx, u8 reg, u8 *value)
68 {
69 s32 v;
70
71 if (reg != ONYX_REG_CONTROL) {
72 *value = onyx->cache[reg-FIRSTREGISTER];
73 return 0;
74 }
75 v = i2c_smbus_read_byte_data(&onyx->i2c, reg);
76 if (v < 0)
77 return -1;
78 *value = (u8)v;
79 onyx->cache[ONYX_REG_CONTROL-FIRSTREGISTER] = *value;
80 return 0;
81 }
82
83 static int onyx_write_register(struct onyx *onyx, u8 reg, u8 value)
84 {
85 int result;
86
87 result = i2c_smbus_write_byte_data(&onyx->i2c, reg, value);
88 if (!result)
89 onyx->cache[reg-FIRSTREGISTER] = value;
90 return result;
91 }
92
93 /* alsa stuff */
94
95 static int onyx_dev_register(struct snd_device *dev)
96 {
97 return 0;
98 }
99
100 static struct snd_device_ops ops = {
101 .dev_register = onyx_dev_register,
102 };
103
104 /* this is necessary because most alsa mixer programs
105 * can't properly handle the negative range */
106 #define VOLUME_RANGE_SHIFT 128
107
108 static int onyx_snd_vol_info(struct snd_kcontrol *kcontrol,
109 struct snd_ctl_elem_info *uinfo)
110 {
111 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
112 uinfo->count = 2;
113 uinfo->value.integer.min = -128 + VOLUME_RANGE_SHIFT;
114 uinfo->value.integer.max = -1 + VOLUME_RANGE_SHIFT;
115 return 0;
116 }
117
118 static int onyx_snd_vol_get(struct snd_kcontrol *kcontrol,
119 struct snd_ctl_elem_value *ucontrol)
120 {
121 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
122 s8 l, r;
123
124 mutex_lock(&onyx->mutex);
125 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l);
126 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r);
127 mutex_unlock(&onyx->mutex);
128
129 ucontrol->value.integer.value[0] = l + VOLUME_RANGE_SHIFT;
130 ucontrol->value.integer.value[1] = r + VOLUME_RANGE_SHIFT;
131
132 return 0;
133 }
134
135 static int onyx_snd_vol_put(struct snd_kcontrol *kcontrol,
136 struct snd_ctl_elem_value *ucontrol)
137 {
138 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
139 s8 l, r;
140
141 mutex_lock(&onyx->mutex);
142 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l);
143 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r);
144
145 if (l + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[0] &&
146 r + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[1]) {
147 mutex_unlock(&onyx->mutex);
148 return 0;
149 }
150
151 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_LEFT,
152 ucontrol->value.integer.value[0]
153 - VOLUME_RANGE_SHIFT);
154 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT,
155 ucontrol->value.integer.value[1]
156 - VOLUME_RANGE_SHIFT);
157 mutex_unlock(&onyx->mutex);
158
159 return 1;
160 }
161
162 static struct snd_kcontrol_new volume_control = {
163 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
164 .name = "Master Playback Volume",
165 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
166 .info = onyx_snd_vol_info,
167 .get = onyx_snd_vol_get,
168 .put = onyx_snd_vol_put,
169 };
170
171 /* like above, this is necessary because a lot
172 * of alsa mixer programs don't handle ranges
173 * that don't start at 0 properly.
174 * even alsamixer is one of them... */
175 #define INPUTGAIN_RANGE_SHIFT (-3)
176
177 static int onyx_snd_inputgain_info(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_info *uinfo)
179 {
180 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
181 uinfo->count = 1;
182 uinfo->value.integer.min = 3 + INPUTGAIN_RANGE_SHIFT;
183 uinfo->value.integer.max = 28 + INPUTGAIN_RANGE_SHIFT;
184 return 0;
185 }
186
187 static int onyx_snd_inputgain_get(struct snd_kcontrol *kcontrol,
188 struct snd_ctl_elem_value *ucontrol)
189 {
190 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
191 u8 ig;
192
193 mutex_lock(&onyx->mutex);
194 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &ig);
195 mutex_unlock(&onyx->mutex);
196
197 ucontrol->value.integer.value[0] =
198 (ig & ONYX_ADC_PGA_GAIN_MASK) + INPUTGAIN_RANGE_SHIFT;
199
200 return 0;
201 }
202
203 static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol,
204 struct snd_ctl_elem_value *ucontrol)
205 {
206 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
207 u8 v, n;
208
209 mutex_lock(&onyx->mutex);
210 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
211 n = v;
212 n &= ~ONYX_ADC_PGA_GAIN_MASK;
213 n |= (ucontrol->value.integer.value[0] - INPUTGAIN_RANGE_SHIFT)
214 & ONYX_ADC_PGA_GAIN_MASK;
215 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, n);
216 mutex_unlock(&onyx->mutex);
217
218 return n != v;
219 }
220
221 static struct snd_kcontrol_new inputgain_control = {
222 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
223 .name = "Master Capture Volume",
224 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
225 .info = onyx_snd_inputgain_info,
226 .get = onyx_snd_inputgain_get,
227 .put = onyx_snd_inputgain_put,
228 };
229
230 static int onyx_snd_capture_source_info(struct snd_kcontrol *kcontrol,
231 struct snd_ctl_elem_info *uinfo)
232 {
233 static char *texts[] = { "Line-In", "Microphone" };
234
235 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
236 uinfo->count = 1;
237 uinfo->value.enumerated.items = 2;
238 if (uinfo->value.enumerated.item > 1)
239 uinfo->value.enumerated.item = 1;
240 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
241 return 0;
242 }
243
244 static int onyx_snd_capture_source_get(struct snd_kcontrol *kcontrol,
245 struct snd_ctl_elem_value *ucontrol)
246 {
247 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
248 s8 v;
249
250 mutex_lock(&onyx->mutex);
251 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
252 mutex_unlock(&onyx->mutex);
253
254 ucontrol->value.enumerated.item[0] = !!(v&ONYX_ADC_INPUT_MIC);
255
256 return 0;
257 }
258
259 static void onyx_set_capture_source(struct onyx *onyx, int mic)
260 {
261 s8 v;
262
263 mutex_lock(&onyx->mutex);
264 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
265 v &= ~ONYX_ADC_INPUT_MIC;
266 if (mic)
267 v |= ONYX_ADC_INPUT_MIC;
268 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, v);
269 mutex_unlock(&onyx->mutex);
270 }
271
272 static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol,
273 struct snd_ctl_elem_value *ucontrol)
274 {
275 onyx_set_capture_source(snd_kcontrol_chip(kcontrol),
276 ucontrol->value.enumerated.item[0]);
277 return 1;
278 }
279
280 static struct snd_kcontrol_new capture_source_control = {
281 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
282 /* If we name this 'Input Source', it properly shows up in
283 * alsamixer as a selection, * but it's shown under the
284 * 'Playback' category.
285 * If I name it 'Capture Source', it shows up in strange
286 * ways (two bools of which one can be selected at a
287 * time) but at least it's shown in the 'Capture'
288 * category.
289 * I was told that this was due to backward compatibility,
290 * but I don't understand then why the mangling is *not*
291 * done when I name it "Input Source".....
292 */
293 .name = "Capture Source",
294 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
295 .info = onyx_snd_capture_source_info,
296 .get = onyx_snd_capture_source_get,
297 .put = onyx_snd_capture_source_put,
298 };
299
300 static int onyx_snd_mute_info(struct snd_kcontrol *kcontrol,
301 struct snd_ctl_elem_info *uinfo)
302 {
303 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
304 uinfo->count = 2;
305 uinfo->value.integer.min = 0;
306 uinfo->value.integer.max = 1;
307 return 0;
308 }
309
310 static int onyx_snd_mute_get(struct snd_kcontrol *kcontrol,
311 struct snd_ctl_elem_value *ucontrol)
312 {
313 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
314 u8 c;
315
316 mutex_lock(&onyx->mutex);
317 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &c);
318 mutex_unlock(&onyx->mutex);
319
320 ucontrol->value.integer.value[0] = !(c & ONYX_MUTE_LEFT);
321 ucontrol->value.integer.value[1] = !(c & ONYX_MUTE_RIGHT);
322
323 return 0;
324 }
325
326 static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol,
327 struct snd_ctl_elem_value *ucontrol)
328 {
329 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
330 u8 v = 0, c = 0;
331 int err = -EBUSY;
332
333 mutex_lock(&onyx->mutex);
334 if (onyx->analog_locked)
335 goto out_unlock;
336
337 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
338 c = v;
339 c &= ~(ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT);
340 if (!ucontrol->value.integer.value[0])
341 c |= ONYX_MUTE_LEFT;
342 if (!ucontrol->value.integer.value[1])
343 c |= ONYX_MUTE_RIGHT;
344 err = onyx_write_register(onyx, ONYX_REG_DAC_CONTROL, c);
345
346 out_unlock:
347 mutex_unlock(&onyx->mutex);
348
349 return !err ? (v != c) : err;
350 }
351
352 static struct snd_kcontrol_new mute_control = {
353 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
354 .name = "Master Playback Switch",
355 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
356 .info = onyx_snd_mute_info,
357 .get = onyx_snd_mute_get,
358 .put = onyx_snd_mute_put,
359 };
360
361
362 static int onyx_snd_single_bit_info(struct snd_kcontrol *kcontrol,
363 struct snd_ctl_elem_info *uinfo)
364 {
365 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
366 uinfo->count = 1;
367 uinfo->value.integer.min = 0;
368 uinfo->value.integer.max = 1;
369 return 0;
370 }
371
372 #define FLAG_POLARITY_INVERT 1
373 #define FLAG_SPDIFLOCK 2
374
375 static int onyx_snd_single_bit_get(struct snd_kcontrol *kcontrol,
376 struct snd_ctl_elem_value *ucontrol)
377 {
378 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
379 u8 c;
380 long int pv = kcontrol->private_value;
381 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
382 u8 address = (pv >> 8) & 0xff;
383 u8 mask = pv & 0xff;
384
385 mutex_lock(&onyx->mutex);
386 onyx_read_register(onyx, address, &c);
387 mutex_unlock(&onyx->mutex);
388
389 ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity;
390
391 return 0;
392 }
393
394 static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol,
395 struct snd_ctl_elem_value *ucontrol)
396 {
397 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
398 u8 v = 0, c = 0;
399 int err;
400 long int pv = kcontrol->private_value;
401 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
402 u8 spdiflock = (pv >> 16) & FLAG_SPDIFLOCK;
403 u8 address = (pv >> 8) & 0xff;
404 u8 mask = pv & 0xff;
405
406 mutex_lock(&onyx->mutex);
407 if (spdiflock && onyx->spdif_locked) {
408 /* even if alsamixer doesn't care.. */
409 err = -EBUSY;
410 goto out_unlock;
411 }
412 onyx_read_register(onyx, address, &v);
413 c = v;
414 c &= ~(mask);
415 if (!!ucontrol->value.integer.value[0] ^ polarity)
416 c |= mask;
417 err = onyx_write_register(onyx, address, c);
418
419 out_unlock:
420 mutex_unlock(&onyx->mutex);
421
422 return !err ? (v != c) : err;
423 }
424
425 #define SINGLE_BIT(n, type, description, address, mask, flags) \
426 static struct snd_kcontrol_new n##_control = { \
427 .iface = SNDRV_CTL_ELEM_IFACE_##type, \
428 .name = description, \
429 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
430 .info = onyx_snd_single_bit_info, \
431 .get = onyx_snd_single_bit_get, \
432 .put = onyx_snd_single_bit_put, \
433 .private_value = (flags << 16) | (address << 8) | mask \
434 }
435
436 SINGLE_BIT(spdif,
437 MIXER,
438 SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
439 ONYX_REG_DIG_INFO4,
440 ONYX_SPDIF_ENABLE,
441 FLAG_SPDIFLOCK);
442 SINGLE_BIT(ovr1,
443 MIXER,
444 "Oversampling Rate",
445 ONYX_REG_DAC_CONTROL,
446 ONYX_OVR1,
447 0);
448 SINGLE_BIT(flt0,
449 MIXER,
450 "Fast Digital Filter Rolloff",
451 ONYX_REG_DAC_FILTER,
452 ONYX_ROLLOFF_FAST,
453 FLAG_POLARITY_INVERT);
454 SINGLE_BIT(hpf,
455 MIXER,
456 "Highpass Filter",
457 ONYX_REG_ADC_HPF_BYPASS,
458 ONYX_HPF_DISABLE,
459 FLAG_POLARITY_INVERT);
460 SINGLE_BIT(dm12,
461 MIXER,
462 "Digital De-Emphasis",
463 ONYX_REG_DAC_DEEMPH,
464 ONYX_DIGDEEMPH_CTRL,
465 0);
466
467 static int onyx_spdif_info(struct snd_kcontrol *kcontrol,
468 struct snd_ctl_elem_info *uinfo)
469 {
470 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
471 uinfo->count = 1;
472 return 0;
473 }
474
475 static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol,
476 struct snd_ctl_elem_value *ucontrol)
477 {
478 /* datasheet page 30, all others are 0 */
479 ucontrol->value.iec958.status[0] = 0x3e;
480 ucontrol->value.iec958.status[1] = 0xff;
481
482 ucontrol->value.iec958.status[3] = 0x3f;
483 ucontrol->value.iec958.status[4] = 0x0f;
484
485 return 0;
486 }
487
488 static struct snd_kcontrol_new onyx_spdif_mask = {
489 .access = SNDRV_CTL_ELEM_ACCESS_READ,
490 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
491 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
492 .info = onyx_spdif_info,
493 .get = onyx_spdif_mask_get,
494 };
495
496 static int onyx_spdif_get(struct snd_kcontrol *kcontrol,
497 struct snd_ctl_elem_value *ucontrol)
498 {
499 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
500 u8 v;
501
502 mutex_lock(&onyx->mutex);
503 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
504 ucontrol->value.iec958.status[0] = v & 0x3e;
505
506 onyx_read_register(onyx, ONYX_REG_DIG_INFO2, &v);
507 ucontrol->value.iec958.status[1] = v;
508
509 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
510 ucontrol->value.iec958.status[3] = v & 0x3f;
511
512 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
513 ucontrol->value.iec958.status[4] = v & 0x0f;
514 mutex_unlock(&onyx->mutex);
515
516 return 0;
517 }
518
519 static int onyx_spdif_put(struct snd_kcontrol *kcontrol,
520 struct snd_ctl_elem_value *ucontrol)
521 {
522 struct onyx *onyx = snd_kcontrol_chip(kcontrol);
523 u8 v;
524
525 mutex_lock(&onyx->mutex);
526 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
527 v = (v & ~0x3e) | (ucontrol->value.iec958.status[0] & 0x3e);
528 onyx_write_register(onyx, ONYX_REG_DIG_INFO1, v);
529
530 v = ucontrol->value.iec958.status[1];
531 onyx_write_register(onyx, ONYX_REG_DIG_INFO2, v);
532
533 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
534 v = (v & ~0x3f) | (ucontrol->value.iec958.status[3] & 0x3f);
535 onyx_write_register(onyx, ONYX_REG_DIG_INFO3, v);
536
537 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
538 v = (v & ~0x0f) | (ucontrol->value.iec958.status[4] & 0x0f);
539 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
540 mutex_unlock(&onyx->mutex);
541
542 return 1;
543 }
544
545 static struct snd_kcontrol_new onyx_spdif_ctrl = {
546 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
547 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
548 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
549 .info = onyx_spdif_info,
550 .get = onyx_spdif_get,
551 .put = onyx_spdif_put,
552 };
553
554 /* our registers */
555
556 static u8 register_map[] = {
557 ONYX_REG_DAC_ATTEN_LEFT,
558 ONYX_REG_DAC_ATTEN_RIGHT,
559 ONYX_REG_CONTROL,
560 ONYX_REG_DAC_CONTROL,
561 ONYX_REG_DAC_DEEMPH,
562 ONYX_REG_DAC_FILTER,
563 ONYX_REG_DAC_OUTPHASE,
564 ONYX_REG_ADC_CONTROL,
565 ONYX_REG_ADC_HPF_BYPASS,
566 ONYX_REG_DIG_INFO1,
567 ONYX_REG_DIG_INFO2,
568 ONYX_REG_DIG_INFO3,
569 ONYX_REG_DIG_INFO4
570 };
571
572 static u8 initial_values[ARRAY_SIZE(register_map)] = {
573 0x80, 0x80, /* muted */
574 ONYX_MRST | ONYX_SRST, /* but handled specially! */
575 ONYX_MUTE_LEFT | ONYX_MUTE_RIGHT,
576 0, /* no deemphasis */
577 ONYX_DAC_FILTER_ALWAYS,
578 ONYX_OUTPHASE_INVERTED,
579 (-1 /*dB*/ + 8) & 0xF, /* line in selected, -1 dB gain*/
580 ONYX_ADC_HPF_ALWAYS,
581 (1<<2), /* pcm audio */
582 2, /* category: pcm coder */
583 0, /* sampling frequency 44.1 kHz, clock accuracy level II */
584 1 /* 24 bit depth */
585 };
586
587 /* reset registers of chip, either to initial or to previous values */
588 static int onyx_register_init(struct onyx *onyx)
589 {
590 int i;
591 u8 val;
592 u8 regs[sizeof(initial_values)];
593
594 if (!onyx->initialised) {
595 memcpy(regs, initial_values, sizeof(initial_values));
596 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &val))
597 return -1;
598 val &= ~ONYX_SILICONVERSION;
599 val |= initial_values[3];
600 regs[3] = val;
601 } else {
602 for (i=0; i<sizeof(register_map); i++)
603 regs[i] = onyx->cache[register_map[i]-FIRSTREGISTER];
604 }
605
606 for (i=0; i<sizeof(register_map); i++) {
607 if (onyx_write_register(onyx, register_map[i], regs[i]))
608 return -1;
609 }
610 onyx->initialised = 1;
611 return 0;
612 }
613
614 static struct transfer_info onyx_transfers[] = {
615 /* this is first so we can skip it if no input is present...
616 * No hardware exists with that, but it's here as an example
617 * of what to do :) */
618 {
619 /* analog input */
620 .formats = SNDRV_PCM_FMTBIT_S8 |
621 SNDRV_PCM_FMTBIT_S16_BE |
622 SNDRV_PCM_FMTBIT_S24_BE,
623 .rates = SNDRV_PCM_RATE_8000_96000,
624 .transfer_in = 1,
625 .must_be_clock_source = 0,
626 .tag = 0,
627 },
628 {
629 /* if analog and digital are currently off, anything should go,
630 * so this entry describes everything we can do... */
631 .formats = SNDRV_PCM_FMTBIT_S8 |
632 SNDRV_PCM_FMTBIT_S16_BE |
633 SNDRV_PCM_FMTBIT_S24_BE
634 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
635 | SNDRV_PCM_FMTBIT_COMPRESSED_16BE
636 #endif
637 ,
638 .rates = SNDRV_PCM_RATE_8000_96000,
639 .tag = 0,
640 },
641 {
642 /* analog output */
643 .formats = SNDRV_PCM_FMTBIT_S8 |
644 SNDRV_PCM_FMTBIT_S16_BE |
645 SNDRV_PCM_FMTBIT_S24_BE,
646 .rates = SNDRV_PCM_RATE_8000_96000,
647 .transfer_in = 0,
648 .must_be_clock_source = 0,
649 .tag = 1,
650 },
651 {
652 /* digital pcm output, also possible for analog out */
653 .formats = SNDRV_PCM_FMTBIT_S8 |
654 SNDRV_PCM_FMTBIT_S16_BE |
655 SNDRV_PCM_FMTBIT_S24_BE,
656 .rates = SNDRV_PCM_RATE_32000 |
657 SNDRV_PCM_RATE_44100 |
658 SNDRV_PCM_RATE_48000,
659 .transfer_in = 0,
660 .must_be_clock_source = 0,
661 .tag = 2,
662 },
663 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
664 Once alsa gets supports for this kind of thing we can add it...
665 {
666 /* digital compressed output */
667 .formats = SNDRV_PCM_FMTBIT_COMPRESSED_16BE,
668 .rates = SNDRV_PCM_RATE_32000 |
669 SNDRV_PCM_RATE_44100 |
670 SNDRV_PCM_RATE_48000,
671 .tag = 2,
672 },
673 #endif
674 {}
675 };
676
677 static int onyx_usable(struct codec_info_item *cii,
678 struct transfer_info *ti,
679 struct transfer_info *out)
680 {
681 u8 v;
682 struct onyx *onyx = cii->codec_data;
683 int spdif_enabled, analog_enabled;
684
685 mutex_lock(&onyx->mutex);
686 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
687 spdif_enabled = !!(v & ONYX_SPDIF_ENABLE);
688 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
689 analog_enabled =
690 (v & (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT))
691 != (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT);
692 mutex_unlock(&onyx->mutex);
693
694 switch (ti->tag) {
695 case 0: return 1;
696 case 1: return analog_enabled;
697 case 2: return spdif_enabled;
698 }
699 return 1;
700 }
701
702 static int onyx_prepare(struct codec_info_item *cii,
703 struct bus_info *bi,
704 struct snd_pcm_substream *substream)
705 {
706 u8 v;
707 struct onyx *onyx = cii->codec_data;
708 int err = -EBUSY;
709
710 mutex_lock(&onyx->mutex);
711
712 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
713 if (substream->runtime->format == SNDRV_PCM_FMTBIT_COMPRESSED_16BE) {
714 /* mute and lock analog output */
715 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
716 if (onyx_write_register(onyx
717 ONYX_REG_DAC_CONTROL,
718 v | ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT))
719 goto out_unlock;
720 onyx->analog_locked = 1;
721 err = 0;
722 goto out_unlock;
723 }
724 #endif
725 switch (substream->runtime->rate) {
726 case 32000:
727 case 44100:
728 case 48000:
729 /* these rates are ok for all outputs */
730 /* FIXME: program spdif channel control bits here so that
731 * userspace doesn't have to if it only plays pcm! */
732 err = 0;
733 goto out_unlock;
734 default:
735 /* got some rate that the digital output can't do,
736 * so disable and lock it */
737 onyx_read_register(cii->codec_data, ONYX_REG_DIG_INFO4, &v);
738 if (onyx_write_register(onyx,
739 ONYX_REG_DIG_INFO4,
740 v & ~ONYX_SPDIF_ENABLE))
741 goto out_unlock;
742 onyx->spdif_locked = 1;
743 err = 0;
744 goto out_unlock;
745 }
746
747 out_unlock:
748 mutex_unlock(&onyx->mutex);
749
750 return err;
751 }
752
753 static int onyx_open(struct codec_info_item *cii,
754 struct snd_pcm_substream *substream)
755 {
756 struct onyx *onyx = cii->codec_data;
757
758 mutex_lock(&onyx->mutex);
759 onyx->open_count++;
760 mutex_unlock(&onyx->mutex);
761
762 return 0;
763 }
764
765 static int onyx_close(struct codec_info_item *cii,
766 struct snd_pcm_substream *substream)
767 {
768 struct onyx *onyx = cii->codec_data;
769
770 mutex_lock(&onyx->mutex);
771 onyx->open_count--;
772 if (!onyx->open_count)
773 onyx->spdif_locked = onyx->analog_locked = 0;
774 mutex_unlock(&onyx->mutex);
775
776 return 0;
777 }
778
779 static int onyx_switch_clock(struct codec_info_item *cii,
780 enum clock_switch what)
781 {
782 struct onyx *onyx = cii->codec_data;
783
784 mutex_lock(&onyx->mutex);
785 /* this *MUST* be more elaborate later... */
786 switch (what) {
787 case CLOCK_SWITCH_PREPARE_SLAVE:
788 onyx->codec.gpio->methods->all_amps_off(onyx->codec.gpio);
789 break;
790 case CLOCK_SWITCH_SLAVE:
791 onyx->codec.gpio->methods->all_amps_restore(onyx->codec.gpio);
792 break;
793 default: /* silence warning */
794 break;
795 }
796 mutex_unlock(&onyx->mutex);
797
798 return 0;
799 }
800
801 #ifdef CONFIG_PM
802
803 static int onyx_suspend(struct codec_info_item *cii, pm_message_t state)
804 {
805 struct onyx *onyx = cii->codec_data;
806 u8 v;
807 int err = -ENXIO;
808
809 mutex_lock(&onyx->mutex);
810 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
811 goto out_unlock;
812 onyx_write_register(onyx, ONYX_REG_CONTROL, v | ONYX_ADPSV | ONYX_DAPSV);
813 /* Apple does a sleep here but the datasheet says to do it on resume */
814 err = 0;
815 out_unlock:
816 mutex_unlock(&onyx->mutex);
817
818 return err;
819 }
820
821 static int onyx_resume(struct codec_info_item *cii)
822 {
823 struct onyx *onyx = cii->codec_data;
824 u8 v;
825 int err = -ENXIO;
826
827 mutex_lock(&onyx->mutex);
828
829 /* reset codec */
830 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
831 msleep(1);
832 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1);
833 msleep(1);
834 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
835 msleep(1);
836
837 /* take codec out of suspend (if it still is after reset) */
838 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
839 goto out_unlock;
840 onyx_write_register(onyx, ONYX_REG_CONTROL, v & ~(ONYX_ADPSV | ONYX_DAPSV));
841 /* FIXME: should divide by sample rate, but 8k is the lowest we go */
842 msleep(2205000/8000);
843 /* reset all values */
844 onyx_register_init(onyx);
845 err = 0;
846 out_unlock:
847 mutex_unlock(&onyx->mutex);
848
849 return err;
850 }
851
852 #endif /* CONFIG_PM */
853
854 static struct codec_info onyx_codec_info = {
855 .transfers = onyx_transfers,
856 .sysclock_factor = 256,
857 .bus_factor = 64,
858 .owner = THIS_MODULE,
859 .usable = onyx_usable,
860 .prepare = onyx_prepare,
861 .open = onyx_open,
862 .close = onyx_close,
863 .switch_clock = onyx_switch_clock,
864 #ifdef CONFIG_PM
865 .suspend = onyx_suspend,
866 .resume = onyx_resume,
867 #endif
868 };
869
870 static int onyx_init_codec(struct aoa_codec *codec)
871 {
872 struct onyx *onyx = codec_to_onyx(codec);
873 struct snd_kcontrol *ctl;
874 struct codec_info *ci = &onyx_codec_info;
875 u8 v;
876 int err;
877
878 if (!onyx->codec.gpio || !onyx->codec.gpio->methods) {
879 printk(KERN_ERR PFX "gpios not assigned!!\n");
880 return -EINVAL;
881 }
882
883 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
884 msleep(1);
885 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1);
886 msleep(1);
887 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
888 msleep(1);
889
890 if (onyx_register_init(onyx)) {
891 printk(KERN_ERR PFX "failed to initialise onyx registers\n");
892 return -ENODEV;
893 }
894
895 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, onyx, &ops)) {
896 printk(KERN_ERR PFX "failed to create onyx snd device!\n");
897 return -ENODEV;
898 }
899
900 /* nothing connected? what a joke! */
901 if ((onyx->codec.connected & 0xF) == 0)
902 return -ENOTCONN;
903
904 /* if no inputs are present... */
905 if ((onyx->codec.connected & 0xC) == 0) {
906 if (!onyx->codec_info)
907 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
908 if (!onyx->codec_info)
909 return -ENOMEM;
910 ci = onyx->codec_info;
911 *ci = onyx_codec_info;
912 ci->transfers++;
913 }
914
915 /* if no outputs are present... */
916 if ((onyx->codec.connected & 3) == 0) {
917 if (!onyx->codec_info)
918 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
919 if (!onyx->codec_info)
920 return -ENOMEM;
921 ci = onyx->codec_info;
922 /* this is fine as there have to be inputs
923 * if we end up in this part of the code */
924 *ci = onyx_codec_info;
925 ci->transfers[1].formats = 0;
926 }
927
928 if (onyx->codec.soundbus_dev->attach_codec(onyx->codec.soundbus_dev,
929 aoa_get_card(),
930 ci, onyx)) {
931 printk(KERN_ERR PFX "error creating onyx pcm\n");
932 return -ENODEV;
933 }
934 #define ADDCTL(n) \
935 do { \
936 ctl = snd_ctl_new1(&n, onyx); \
937 if (ctl) { \
938 ctl->id.device = \
939 onyx->codec.soundbus_dev->pcm->device; \
940 err = aoa_snd_ctl_add(ctl); \
941 if (err) \
942 goto error; \
943 } \
944 } while (0)
945
946 if (onyx->codec.soundbus_dev->pcm) {
947 /* give the user appropriate controls
948 * depending on what inputs are connected */
949 if ((onyx->codec.connected & 0xC) == 0xC)
950 ADDCTL(capture_source_control);
951 else if (onyx->codec.connected & 4)
952 onyx_set_capture_source(onyx, 0);
953 else
954 onyx_set_capture_source(onyx, 1);
955 if (onyx->codec.connected & 0xC)
956 ADDCTL(inputgain_control);
957
958 /* depending on what output is connected,
959 * give the user appropriate controls */
960 if (onyx->codec.connected & 1) {
961 ADDCTL(volume_control);
962 ADDCTL(mute_control);
963 ADDCTL(ovr1_control);
964 ADDCTL(flt0_control);
965 ADDCTL(hpf_control);
966 ADDCTL(dm12_control);
967 /* spdif control defaults to off */
968 }
969 if (onyx->codec.connected & 2) {
970 ADDCTL(onyx_spdif_mask);
971 ADDCTL(onyx_spdif_ctrl);
972 }
973 if ((onyx->codec.connected & 3) == 3)
974 ADDCTL(spdif_control);
975 /* if only S/PDIF is connected, enable it unconditionally */
976 if ((onyx->codec.connected & 3) == 2) {
977 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
978 v |= ONYX_SPDIF_ENABLE;
979 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
980 }
981 }
982 #undef ADDCTL
983 printk(KERN_INFO PFX "attached to onyx codec via i2c\n");
984
985 return 0;
986 error:
987 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
988 snd_device_free(aoa_get_card(), onyx);
989 return err;
990 }
991
992 static void onyx_exit_codec(struct aoa_codec *codec)
993 {
994 struct onyx *onyx = codec_to_onyx(codec);
995
996 if (!onyx->codec.soundbus_dev) {
997 printk(KERN_ERR PFX "onyx_exit_codec called without soundbus_dev!\n");
998 return;
999 }
1000 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
1001 }
1002
1003 static struct i2c_driver onyx_driver;
1004
1005 static int onyx_create(struct i2c_adapter *adapter,
1006 struct device_node *node,
1007 int addr)
1008 {
1009 struct onyx *onyx;
1010 u8 dummy;
1011
1012 onyx = kzalloc(sizeof(struct onyx), GFP_KERNEL);
1013
1014 if (!onyx)
1015 return -ENOMEM;
1016
1017 mutex_init(&onyx->mutex);
1018 onyx->i2c.driver = &onyx_driver;
1019 onyx->i2c.adapter = adapter;
1020 onyx->i2c.addr = addr & 0x7f;
1021 strlcpy(onyx->i2c.name, "onyx audio codec", I2C_NAME_SIZE);
1022
1023 if (i2c_attach_client(&onyx->i2c)) {
1024 printk(KERN_ERR PFX "failed to attach to i2c\n");
1025 goto fail;
1026 }
1027
1028 /* we try to read from register ONYX_REG_CONTROL
1029 * to check if the codec is present */
1030 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &dummy) != 0) {
1031 i2c_detach_client(&onyx->i2c);
1032 printk(KERN_ERR PFX "failed to read control register\n");
1033 goto fail;
1034 }
1035
1036 strlcpy(onyx->codec.name, "onyx", MAX_CODEC_NAME_LEN);
1037 onyx->codec.owner = THIS_MODULE;
1038 onyx->codec.init = onyx_init_codec;
1039 onyx->codec.exit = onyx_exit_codec;
1040 onyx->codec.node = of_node_get(node);
1041
1042 if (aoa_codec_register(&onyx->codec)) {
1043 i2c_detach_client(&onyx->i2c);
1044 goto fail;
1045 }
1046 printk(KERN_DEBUG PFX "created and attached onyx instance\n");
1047 return 0;
1048 fail:
1049 kfree(onyx);
1050 return -EINVAL;
1051 }
1052
1053 static int onyx_i2c_attach(struct i2c_adapter *adapter)
1054 {
1055 struct device_node *busnode, *dev = NULL;
1056 struct pmac_i2c_bus *bus;
1057
1058 bus = pmac_i2c_adapter_to_bus(adapter);
1059 if (bus == NULL)
1060 return -ENODEV;
1061 busnode = pmac_i2c_get_bus_node(bus);
1062
1063 while ((dev = of_get_next_child(busnode, dev)) != NULL) {
1064 if (of_device_is_compatible(dev, "pcm3052")) {
1065 const u32 *addr;
1066 printk(KERN_DEBUG PFX "found pcm3052\n");
1067 addr = of_get_property(dev, "reg", NULL);
1068 if (!addr)
1069 return -ENODEV;
1070 return onyx_create(adapter, dev, (*addr)>>1);
1071 }
1072 }
1073
1074 /* if that didn't work, try desperate mode for older
1075 * machines that have stuff missing from the device tree */
1076
1077 if (!of_device_is_compatible(busnode, "k2-i2c"))
1078 return -ENODEV;
1079
1080 printk(KERN_DEBUG PFX "found k2-i2c, checking if onyx chip is on it\n");
1081 /* probe both possible addresses for the onyx chip */
1082 if (onyx_create(adapter, NULL, 0x46) == 0)
1083 return 0;
1084 return onyx_create(adapter, NULL, 0x47);
1085 }
1086
1087 static int onyx_i2c_detach(struct i2c_client *client)
1088 {
1089 struct onyx *onyx = container_of(client, struct onyx, i2c);
1090 int err;
1091
1092 if ((err = i2c_detach_client(client)))
1093 return err;
1094 aoa_codec_unregister(&onyx->codec);
1095 of_node_put(onyx->codec.node);
1096 if (onyx->codec_info)
1097 kfree(onyx->codec_info);
1098 kfree(onyx);
1099 return 0;
1100 }
1101
1102 static struct i2c_driver onyx_driver = {
1103 .driver = {
1104 .name = "aoa_codec_onyx",
1105 .owner = THIS_MODULE,
1106 },
1107 .attach_adapter = onyx_i2c_attach,
1108 .detach_client = onyx_i2c_detach,
1109 };
1110
1111 static int __init onyx_init(void)
1112 {
1113 return i2c_add_driver(&onyx_driver);
1114 }
1115
1116 static void __exit onyx_exit(void)
1117 {
1118 i2c_del_driver(&onyx_driver);
1119 }
1120
1121 module_init(onyx_init);
1122 module_exit(onyx_exit);
Tomato firmware and modifications.