ALSA: opti92x: use PnP data to select Master Control port
[linux-2.6.git] / sound / aoa / codecs / onyx.c
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 "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         if (ucontrol->value.integer.value[0] < -128 + VOLUME_RANGE_SHIFT ||
142             ucontrol->value.integer.value[0] > -1 + VOLUME_RANGE_SHIFT)
143                 return -EINVAL;
144         if (ucontrol->value.integer.value[1] < -128 + VOLUME_RANGE_SHIFT ||
145             ucontrol->value.integer.value[1] > -1 + VOLUME_RANGE_SHIFT)
146                 return -EINVAL;
147
148         mutex_lock(&onyx->mutex);
149         onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l);
150         onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r);
151
152         if (l + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[0] &&
153             r + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[1]) {
154                 mutex_unlock(&onyx->mutex);
155                 return 0;
156         }
157
158         onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_LEFT,
159                             ucontrol->value.integer.value[0]
160                              - VOLUME_RANGE_SHIFT);
161         onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT,
162                             ucontrol->value.integer.value[1]
163                              - VOLUME_RANGE_SHIFT);
164         mutex_unlock(&onyx->mutex);
165
166         return 1;
167 }
168
169 static struct snd_kcontrol_new volume_control = {
170         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
171         .name = "Master Playback Volume",
172         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
173         .info = onyx_snd_vol_info,
174         .get = onyx_snd_vol_get,
175         .put = onyx_snd_vol_put,
176 };
177
178 /* like above, this is necessary because a lot
179  * of alsa mixer programs don't handle ranges
180  * that don't start at 0 properly.
181  * even alsamixer is one of them... */
182 #define INPUTGAIN_RANGE_SHIFT   (-3)
183
184 static int onyx_snd_inputgain_info(struct snd_kcontrol *kcontrol,
185         struct snd_ctl_elem_info *uinfo)
186 {
187         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
188         uinfo->count = 1;
189         uinfo->value.integer.min = 3 + INPUTGAIN_RANGE_SHIFT;
190         uinfo->value.integer.max = 28 + INPUTGAIN_RANGE_SHIFT;
191         return 0;
192 }
193
194 static int onyx_snd_inputgain_get(struct snd_kcontrol *kcontrol,
195         struct snd_ctl_elem_value *ucontrol)
196 {
197         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
198         u8 ig;
199
200         mutex_lock(&onyx->mutex);
201         onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &ig);
202         mutex_unlock(&onyx->mutex);
203
204         ucontrol->value.integer.value[0] =
205                 (ig & ONYX_ADC_PGA_GAIN_MASK) + INPUTGAIN_RANGE_SHIFT;
206
207         return 0;
208 }
209
210 static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol,
211         struct snd_ctl_elem_value *ucontrol)
212 {
213         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
214         u8 v, n;
215
216         if (ucontrol->value.integer.value[0] < 3 + INPUTGAIN_RANGE_SHIFT ||
217             ucontrol->value.integer.value[0] > 28 + INPUTGAIN_RANGE_SHIFT)
218                 return -EINVAL;
219         mutex_lock(&onyx->mutex);
220         onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
221         n = v;
222         n &= ~ONYX_ADC_PGA_GAIN_MASK;
223         n |= (ucontrol->value.integer.value[0] - INPUTGAIN_RANGE_SHIFT)
224                 & ONYX_ADC_PGA_GAIN_MASK;
225         onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, n);
226         mutex_unlock(&onyx->mutex);
227
228         return n != v;
229 }
230
231 static struct snd_kcontrol_new inputgain_control = {
232         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
233         .name = "Master Capture Volume",
234         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
235         .info = onyx_snd_inputgain_info,
236         .get = onyx_snd_inputgain_get,
237         .put = onyx_snd_inputgain_put,
238 };
239
240 static int onyx_snd_capture_source_info(struct snd_kcontrol *kcontrol,
241         struct snd_ctl_elem_info *uinfo)
242 {
243         static char *texts[] = { "Line-In", "Microphone" };
244
245         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
246         uinfo->count = 1;
247         uinfo->value.enumerated.items = 2;
248         if (uinfo->value.enumerated.item > 1)
249                 uinfo->value.enumerated.item = 1;
250         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
251         return 0;
252 }
253
254 static int onyx_snd_capture_source_get(struct snd_kcontrol *kcontrol,
255         struct snd_ctl_elem_value *ucontrol)
256 {
257         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
258         s8 v;
259
260         mutex_lock(&onyx->mutex);
261         onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
262         mutex_unlock(&onyx->mutex);
263
264         ucontrol->value.enumerated.item[0] = !!(v&ONYX_ADC_INPUT_MIC);
265
266         return 0;
267 }
268
269 static void onyx_set_capture_source(struct onyx *onyx, int mic)
270 {
271         s8 v;
272
273         mutex_lock(&onyx->mutex);
274         onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
275         v &= ~ONYX_ADC_INPUT_MIC;
276         if (mic)
277                 v |= ONYX_ADC_INPUT_MIC;
278         onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, v);
279         mutex_unlock(&onyx->mutex);
280 }
281
282 static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol,
283         struct snd_ctl_elem_value *ucontrol)
284 {
285         if (ucontrol->value.enumerated.item[0] > 1)
286                 return -EINVAL;
287         onyx_set_capture_source(snd_kcontrol_chip(kcontrol),
288                                 ucontrol->value.enumerated.item[0]);
289         return 1;
290 }
291
292 static struct snd_kcontrol_new capture_source_control = {
293         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
294         /* If we name this 'Input Source', it properly shows up in
295          * alsamixer as a selection, * but it's shown under the
296          * 'Playback' category.
297          * If I name it 'Capture Source', it shows up in strange
298          * ways (two bools of which one can be selected at a
299          * time) but at least it's shown in the 'Capture'
300          * category.
301          * I was told that this was due to backward compatibility,
302          * but I don't understand then why the mangling is *not*
303          * done when I name it "Input Source".....
304          */
305         .name = "Capture Source",
306         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
307         .info = onyx_snd_capture_source_info,
308         .get = onyx_snd_capture_source_get,
309         .put = onyx_snd_capture_source_put,
310 };
311
312 #define onyx_snd_mute_info      snd_ctl_boolean_stereo_info
313
314 static int onyx_snd_mute_get(struct snd_kcontrol *kcontrol,
315         struct snd_ctl_elem_value *ucontrol)
316 {
317         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
318         u8 c;
319
320         mutex_lock(&onyx->mutex);
321         onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &c);
322         mutex_unlock(&onyx->mutex);
323
324         ucontrol->value.integer.value[0] = !(c & ONYX_MUTE_LEFT);
325         ucontrol->value.integer.value[1] = !(c & ONYX_MUTE_RIGHT);
326
327         return 0;
328 }
329
330 static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol,
331         struct snd_ctl_elem_value *ucontrol)
332 {
333         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
334         u8 v = 0, c = 0;
335         int err = -EBUSY;
336
337         mutex_lock(&onyx->mutex);
338         if (onyx->analog_locked)
339                 goto out_unlock;
340
341         onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
342         c = v;
343         c &= ~(ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT);
344         if (!ucontrol->value.integer.value[0])
345                 c |= ONYX_MUTE_LEFT;
346         if (!ucontrol->value.integer.value[1])
347                 c |= ONYX_MUTE_RIGHT;
348         err = onyx_write_register(onyx, ONYX_REG_DAC_CONTROL, c);
349
350  out_unlock:
351         mutex_unlock(&onyx->mutex);
352
353         return !err ? (v != c) : err;
354 }
355
356 static struct snd_kcontrol_new mute_control = {
357         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
358         .name = "Master Playback Switch",
359         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
360         .info = onyx_snd_mute_info,
361         .get = onyx_snd_mute_get,
362         .put = onyx_snd_mute_put,
363 };
364
365
366 #define onyx_snd_single_bit_info        snd_ctl_boolean_mono_info
367
368 #define FLAG_POLARITY_INVERT    1
369 #define FLAG_SPDIFLOCK          2
370
371 static int onyx_snd_single_bit_get(struct snd_kcontrol *kcontrol,
372         struct snd_ctl_elem_value *ucontrol)
373 {
374         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
375         u8 c;
376         long int pv = kcontrol->private_value;
377         u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
378         u8 address = (pv >> 8) & 0xff;
379         u8 mask = pv & 0xff;
380
381         mutex_lock(&onyx->mutex);
382         onyx_read_register(onyx, address, &c);
383         mutex_unlock(&onyx->mutex);
384
385         ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity;
386
387         return 0;
388 }
389
390 static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol,
391         struct snd_ctl_elem_value *ucontrol)
392 {
393         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
394         u8 v = 0, c = 0;
395         int err;
396         long int pv = kcontrol->private_value;
397         u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
398         u8 spdiflock = (pv >> 16) & FLAG_SPDIFLOCK;
399         u8 address = (pv >> 8) & 0xff;
400         u8 mask = pv & 0xff;
401
402         mutex_lock(&onyx->mutex);
403         if (spdiflock && onyx->spdif_locked) {
404                 /* even if alsamixer doesn't care.. */
405                 err = -EBUSY;
406                 goto out_unlock;
407         }
408         onyx_read_register(onyx, address, &v);
409         c = v;
410         c &= ~(mask);
411         if (!!ucontrol->value.integer.value[0] ^ polarity)
412                 c |= mask;
413         err = onyx_write_register(onyx, address, c);
414
415  out_unlock:
416         mutex_unlock(&onyx->mutex);
417
418         return !err ? (v != c) : err;
419 }
420
421 #define SINGLE_BIT(n, type, description, address, mask, flags)          \
422 static struct snd_kcontrol_new n##_control = {                          \
423         .iface = SNDRV_CTL_ELEM_IFACE_##type,                           \
424         .name = description,                                            \
425         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,                      \
426         .info = onyx_snd_single_bit_info,                               \
427         .get = onyx_snd_single_bit_get,                                 \
428         .put = onyx_snd_single_bit_put,                                 \
429         .private_value = (flags << 16) | (address << 8) | mask          \
430 }
431
432 SINGLE_BIT(spdif,
433            MIXER,
434            SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
435            ONYX_REG_DIG_INFO4,
436            ONYX_SPDIF_ENABLE,
437            FLAG_SPDIFLOCK);
438 SINGLE_BIT(ovr1,
439            MIXER,
440            "Oversampling Rate",
441            ONYX_REG_DAC_CONTROL,
442            ONYX_OVR1,
443            0);
444 SINGLE_BIT(flt0,
445            MIXER,
446            "Fast Digital Filter Rolloff",
447            ONYX_REG_DAC_FILTER,
448            ONYX_ROLLOFF_FAST,
449            FLAG_POLARITY_INVERT);
450 SINGLE_BIT(hpf,
451            MIXER,
452            "Highpass Filter",
453            ONYX_REG_ADC_HPF_BYPASS,
454            ONYX_HPF_DISABLE,
455            FLAG_POLARITY_INVERT);
456 SINGLE_BIT(dm12,
457            MIXER,
458            "Digital De-Emphasis",
459            ONYX_REG_DAC_DEEMPH,
460            ONYX_DIGDEEMPH_CTRL,
461            0);
462
463 static int onyx_spdif_info(struct snd_kcontrol *kcontrol,
464                            struct snd_ctl_elem_info *uinfo)
465 {
466         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
467         uinfo->count = 1;
468         return 0;
469 }
470
471 static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol,
472                                struct snd_ctl_elem_value *ucontrol)
473 {
474         /* datasheet page 30, all others are 0 */
475         ucontrol->value.iec958.status[0] = 0x3e;
476         ucontrol->value.iec958.status[1] = 0xff;
477
478         ucontrol->value.iec958.status[3] = 0x3f;
479         ucontrol->value.iec958.status[4] = 0x0f;
480
481         return 0;
482 }
483
484 static struct snd_kcontrol_new onyx_spdif_mask = {
485         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
486         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
487         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
488         .info =         onyx_spdif_info,
489         .get =          onyx_spdif_mask_get,
490 };
491
492 static int onyx_spdif_get(struct snd_kcontrol *kcontrol,
493                           struct snd_ctl_elem_value *ucontrol)
494 {
495         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
496         u8 v;
497
498         mutex_lock(&onyx->mutex);
499         onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
500         ucontrol->value.iec958.status[0] = v & 0x3e;
501
502         onyx_read_register(onyx, ONYX_REG_DIG_INFO2, &v);
503         ucontrol->value.iec958.status[1] = v;
504
505         onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
506         ucontrol->value.iec958.status[3] = v & 0x3f;
507
508         onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
509         ucontrol->value.iec958.status[4] = v & 0x0f;
510         mutex_unlock(&onyx->mutex);
511
512         return 0;
513 }
514
515 static int onyx_spdif_put(struct snd_kcontrol *kcontrol,
516                           struct snd_ctl_elem_value *ucontrol)
517 {
518         struct onyx *onyx = snd_kcontrol_chip(kcontrol);
519         u8 v;
520
521         mutex_lock(&onyx->mutex);
522         onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
523         v = (v & ~0x3e) | (ucontrol->value.iec958.status[0] & 0x3e);
524         onyx_write_register(onyx, ONYX_REG_DIG_INFO1, v);
525
526         v = ucontrol->value.iec958.status[1];
527         onyx_write_register(onyx, ONYX_REG_DIG_INFO2, v);
528
529         onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
530         v = (v & ~0x3f) | (ucontrol->value.iec958.status[3] & 0x3f);
531         onyx_write_register(onyx, ONYX_REG_DIG_INFO3, v);
532
533         onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
534         v = (v & ~0x0f) | (ucontrol->value.iec958.status[4] & 0x0f);
535         onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
536         mutex_unlock(&onyx->mutex);
537
538         return 1;
539 }
540
541 static struct snd_kcontrol_new onyx_spdif_ctrl = {
542         .access =       SNDRV_CTL_ELEM_ACCESS_READWRITE,
543         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
544         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
545         .info =         onyx_spdif_info,
546         .get =          onyx_spdif_get,
547         .put =          onyx_spdif_put,
548 };
549
550 /* our registers */
551
552 static u8 register_map[] = {
553         ONYX_REG_DAC_ATTEN_LEFT,
554         ONYX_REG_DAC_ATTEN_RIGHT,
555         ONYX_REG_CONTROL,
556         ONYX_REG_DAC_CONTROL,
557         ONYX_REG_DAC_DEEMPH,
558         ONYX_REG_DAC_FILTER,
559         ONYX_REG_DAC_OUTPHASE,
560         ONYX_REG_ADC_CONTROL,
561         ONYX_REG_ADC_HPF_BYPASS,
562         ONYX_REG_DIG_INFO1,
563         ONYX_REG_DIG_INFO2,
564         ONYX_REG_DIG_INFO3,
565         ONYX_REG_DIG_INFO4
566 };
567
568 static u8 initial_values[ARRAY_SIZE(register_map)] = {
569         0x80, 0x80, /* muted */
570         ONYX_MRST | ONYX_SRST, /* but handled specially! */
571         ONYX_MUTE_LEFT | ONYX_MUTE_RIGHT,
572         0, /* no deemphasis */
573         ONYX_DAC_FILTER_ALWAYS,
574         ONYX_OUTPHASE_INVERTED,
575         (-1 /*dB*/ + 8) & 0xF, /* line in selected, -1 dB gain*/
576         ONYX_ADC_HPF_ALWAYS,
577         (1<<2), /* pcm audio */
578         2,      /* category: pcm coder */
579         0,      /* sampling frequency 44.1 kHz, clock accuracy level II */
580         1       /* 24 bit depth */
581 };
582
583 /* reset registers of chip, either to initial or to previous values */
584 static int onyx_register_init(struct onyx *onyx)
585 {
586         int i;
587         u8 val;
588         u8 regs[sizeof(initial_values)];
589
590         if (!onyx->initialised) {
591                 memcpy(regs, initial_values, sizeof(initial_values));
592                 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &val))
593                         return -1;
594                 val &= ~ONYX_SILICONVERSION;
595                 val |= initial_values[3];
596                 regs[3] = val;
597         } else {
598                 for (i=0; i<sizeof(register_map); i++)
599                         regs[i] = onyx->cache[register_map[i]-FIRSTREGISTER];
600         }
601
602         for (i=0; i<sizeof(register_map); i++) {
603                 if (onyx_write_register(onyx, register_map[i], regs[i]))
604                         return -1;
605         }
606         onyx->initialised = 1;
607         return 0;
608 }
609
610 static struct transfer_info onyx_transfers[] = {
611         /* this is first so we can skip it if no input is present...
612          * No hardware exists with that, but it's here as an example
613          * of what to do :) */
614         {
615                 /* analog input */
616                 .formats = SNDRV_PCM_FMTBIT_S8 |
617                            SNDRV_PCM_FMTBIT_S16_BE |
618                            SNDRV_PCM_FMTBIT_S24_BE,
619                 .rates = SNDRV_PCM_RATE_8000_96000,
620                 .transfer_in = 1,
621                 .must_be_clock_source = 0,
622                 .tag = 0,
623         },
624         {
625                 /* if analog and digital are currently off, anything should go,
626                  * so this entry describes everything we can do... */
627                 .formats = SNDRV_PCM_FMTBIT_S8 |
628                            SNDRV_PCM_FMTBIT_S16_BE |
629                            SNDRV_PCM_FMTBIT_S24_BE
630 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
631                            | SNDRV_PCM_FMTBIT_COMPRESSED_16BE
632 #endif
633                 ,
634                 .rates = SNDRV_PCM_RATE_8000_96000,
635                 .tag = 0,
636         },
637         {
638                 /* analog output */
639                 .formats = SNDRV_PCM_FMTBIT_S8 |
640                            SNDRV_PCM_FMTBIT_S16_BE |
641                            SNDRV_PCM_FMTBIT_S24_BE,
642                 .rates = SNDRV_PCM_RATE_8000_96000,
643                 .transfer_in = 0,
644                 .must_be_clock_source = 0,
645                 .tag = 1,
646         },
647         {
648                 /* digital pcm output, also possible for analog out */
649                 .formats = SNDRV_PCM_FMTBIT_S8 |
650                            SNDRV_PCM_FMTBIT_S16_BE |
651                            SNDRV_PCM_FMTBIT_S24_BE,
652                 .rates = SNDRV_PCM_RATE_32000 |
653                          SNDRV_PCM_RATE_44100 |
654                          SNDRV_PCM_RATE_48000,
655                 .transfer_in = 0,
656                 .must_be_clock_source = 0,
657                 .tag = 2,
658         },
659 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
660         /* Once alsa gets supports for this kind of thing we can add it... */
661         {
662                 /* digital compressed output */
663                 .formats =  SNDRV_PCM_FMTBIT_COMPRESSED_16BE,
664                 .rates = SNDRV_PCM_RATE_32000 |
665                          SNDRV_PCM_RATE_44100 |
666                          SNDRV_PCM_RATE_48000,
667                 .tag = 2,
668         },
669 #endif
670         {}
671 };
672
673 static int onyx_usable(struct codec_info_item *cii,
674                        struct transfer_info *ti,
675                        struct transfer_info *out)
676 {
677         u8 v;
678         struct onyx *onyx = cii->codec_data;
679         int spdif_enabled, analog_enabled;
680
681         mutex_lock(&onyx->mutex);
682         onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
683         spdif_enabled = !!(v & ONYX_SPDIF_ENABLE);
684         onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
685         analog_enabled =
686                 (v & (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT))
687                  != (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT);
688         mutex_unlock(&onyx->mutex);
689
690         switch (ti->tag) {
691         case 0: return 1;
692         case 1: return analog_enabled;
693         case 2: return spdif_enabled;
694         }
695         return 1;
696 }
697
698 static int onyx_prepare(struct codec_info_item *cii,
699                         struct bus_info *bi,
700                         struct snd_pcm_substream *substream)
701 {
702         u8 v;
703         struct onyx *onyx = cii->codec_data;
704         int err = -EBUSY;
705
706         mutex_lock(&onyx->mutex);
707
708 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
709         if (substream->runtime->format == SNDRV_PCM_FMTBIT_COMPRESSED_16BE) {
710                 /* mute and lock analog output */
711                 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
712                 if (onyx_write_register(onyx,
713                                         ONYX_REG_DAC_CONTROL,
714                                         v | ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT))
715                         goto out_unlock;
716                 onyx->analog_locked = 1;
717                 err = 0;
718                 goto out_unlock;
719         }
720 #endif
721         switch (substream->runtime->rate) {
722         case 32000:
723         case 44100:
724         case 48000:
725                 /* these rates are ok for all outputs */
726                 /* FIXME: program spdif channel control bits here so that
727                  *        userspace doesn't have to if it only plays pcm! */
728                 err = 0;
729                 goto out_unlock;
730         default:
731                 /* got some rate that the digital output can't do,
732                  * so disable and lock it */
733                 onyx_read_register(cii->codec_data, ONYX_REG_DIG_INFO4, &v);
734                 if (onyx_write_register(onyx,
735                                         ONYX_REG_DIG_INFO4,
736                                         v & ~ONYX_SPDIF_ENABLE))
737                         goto out_unlock;
738                 onyx->spdif_locked = 1;
739                 err = 0;
740                 goto out_unlock;
741         }
742
743  out_unlock:
744         mutex_unlock(&onyx->mutex);
745
746         return err;
747 }
748
749 static int onyx_open(struct codec_info_item *cii,
750                      struct snd_pcm_substream *substream)
751 {
752         struct onyx *onyx = cii->codec_data;
753
754         mutex_lock(&onyx->mutex);
755         onyx->open_count++;
756         mutex_unlock(&onyx->mutex);
757
758         return 0;
759 }
760
761 static int onyx_close(struct codec_info_item *cii,
762                       struct snd_pcm_substream *substream)
763 {
764         struct onyx *onyx = cii->codec_data;
765
766         mutex_lock(&onyx->mutex);
767         onyx->open_count--;
768         if (!onyx->open_count)
769                 onyx->spdif_locked = onyx->analog_locked = 0;
770         mutex_unlock(&onyx->mutex);
771
772         return 0;
773 }
774
775 static int onyx_switch_clock(struct codec_info_item *cii,
776                              enum clock_switch what)
777 {
778         struct onyx *onyx = cii->codec_data;
779
780         mutex_lock(&onyx->mutex);
781         /* this *MUST* be more elaborate later... */
782         switch (what) {
783         case CLOCK_SWITCH_PREPARE_SLAVE:
784                 onyx->codec.gpio->methods->all_amps_off(onyx->codec.gpio);
785                 break;
786         case CLOCK_SWITCH_SLAVE:
787                 onyx->codec.gpio->methods->all_amps_restore(onyx->codec.gpio);
788                 break;
789         default: /* silence warning */
790                 break;
791         }
792         mutex_unlock(&onyx->mutex);
793
794         return 0;
795 }
796
797 #ifdef CONFIG_PM
798
799 static int onyx_suspend(struct codec_info_item *cii, pm_message_t state)
800 {
801         struct onyx *onyx = cii->codec_data;
802         u8 v;
803         int err = -ENXIO;
804
805         mutex_lock(&onyx->mutex);
806         if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
807                 goto out_unlock;
808         onyx_write_register(onyx, ONYX_REG_CONTROL, v | ONYX_ADPSV | ONYX_DAPSV);
809         /* Apple does a sleep here but the datasheet says to do it on resume */
810         err = 0;
811  out_unlock:
812         mutex_unlock(&onyx->mutex);
813
814         return err;
815 }
816
817 static int onyx_resume(struct codec_info_item *cii)
818 {
819         struct onyx *onyx = cii->codec_data;
820         u8 v;
821         int err = -ENXIO;
822
823         mutex_lock(&onyx->mutex);
824
825         /* reset codec */
826         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
827         msleep(1);
828         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1);
829         msleep(1);
830         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
831         msleep(1);
832
833         /* take codec out of suspend (if it still is after reset) */
834         if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
835                 goto out_unlock;
836         onyx_write_register(onyx, ONYX_REG_CONTROL, v & ~(ONYX_ADPSV | ONYX_DAPSV));
837         /* FIXME: should divide by sample rate, but 8k is the lowest we go */
838         msleep(2205000/8000);
839         /* reset all values */
840         onyx_register_init(onyx);
841         err = 0;
842  out_unlock:
843         mutex_unlock(&onyx->mutex);
844
845         return err;
846 }
847
848 #endif /* CONFIG_PM */
849
850 static struct codec_info onyx_codec_info = {
851         .transfers = onyx_transfers,
852         .sysclock_factor = 256,
853         .bus_factor = 64,
854         .owner = THIS_MODULE,
855         .usable = onyx_usable,
856         .prepare = onyx_prepare,
857         .open = onyx_open,
858         .close = onyx_close,
859         .switch_clock = onyx_switch_clock,
860 #ifdef CONFIG_PM
861         .suspend = onyx_suspend,
862         .resume = onyx_resume,
863 #endif
864 };
865
866 static int onyx_init_codec(struct aoa_codec *codec)
867 {
868         struct onyx *onyx = codec_to_onyx(codec);
869         struct snd_kcontrol *ctl;
870         struct codec_info *ci = &onyx_codec_info;
871         u8 v;
872         int err;
873
874         if (!onyx->codec.gpio || !onyx->codec.gpio->methods) {
875                 printk(KERN_ERR PFX "gpios not assigned!!\n");
876                 return -EINVAL;
877         }
878
879         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
880         msleep(1);
881         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1);
882         msleep(1);
883         onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
884         msleep(1);
885
886         if (onyx_register_init(onyx)) {
887                 printk(KERN_ERR PFX "failed to initialise onyx registers\n");
888                 return -ENODEV;
889         }
890
891         if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, onyx, &ops)) {
892                 printk(KERN_ERR PFX "failed to create onyx snd device!\n");
893                 return -ENODEV;
894         }
895
896         /* nothing connected? what a joke! */
897         if ((onyx->codec.connected & 0xF) == 0)
898                 return -ENOTCONN;
899
900         /* if no inputs are present... */
901         if ((onyx->codec.connected & 0xC) == 0) {
902                 if (!onyx->codec_info)
903                         onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
904                 if (!onyx->codec_info)
905                         return -ENOMEM;
906                 ci = onyx->codec_info;
907                 *ci = onyx_codec_info;
908                 ci->transfers++;
909         }
910
911         /* if no outputs are present... */
912         if ((onyx->codec.connected & 3) == 0) {
913                 if (!onyx->codec_info)
914                         onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
915                 if (!onyx->codec_info)
916                         return -ENOMEM;
917                 ci = onyx->codec_info;
918                 /* this is fine as there have to be inputs
919                  * if we end up in this part of the code */
920                 *ci = onyx_codec_info;
921                 ci->transfers[1].formats = 0;
922         }
923
924         if (onyx->codec.soundbus_dev->attach_codec(onyx->codec.soundbus_dev,
925                                                    aoa_get_card(),
926                                                    ci, onyx)) {
927                 printk(KERN_ERR PFX "error creating onyx pcm\n");
928                 return -ENODEV;
929         }
930 #define ADDCTL(n)                                                       \
931         do {                                                            \
932                 ctl = snd_ctl_new1(&n, onyx);                           \
933                 if (ctl) {                                              \
934                         ctl->id.device =                                \
935                                 onyx->codec.soundbus_dev->pcm->device;  \
936                         err = aoa_snd_ctl_add(ctl);                     \
937                         if (err)                                        \
938                                 goto error;                             \
939                 }                                                       \
940         } while (0)
941
942         if (onyx->codec.soundbus_dev->pcm) {
943                 /* give the user appropriate controls
944                  * depending on what inputs are connected */
945                 if ((onyx->codec.connected & 0xC) == 0xC)
946                         ADDCTL(capture_source_control);
947                 else if (onyx->codec.connected & 4)
948                         onyx_set_capture_source(onyx, 0);
949                 else
950                         onyx_set_capture_source(onyx, 1);
951                 if (onyx->codec.connected & 0xC)
952                         ADDCTL(inputgain_control);
953
954                 /* depending on what output is connected,
955                  * give the user appropriate controls */
956                 if (onyx->codec.connected & 1) {
957                         ADDCTL(volume_control);
958                         ADDCTL(mute_control);
959                         ADDCTL(ovr1_control);
960                         ADDCTL(flt0_control);
961                         ADDCTL(hpf_control);
962                         ADDCTL(dm12_control);
963                         /* spdif control defaults to off */
964                 }
965                 if (onyx->codec.connected & 2) {
966                         ADDCTL(onyx_spdif_mask);
967                         ADDCTL(onyx_spdif_ctrl);
968                 }
969                 if ((onyx->codec.connected & 3) == 3)
970                         ADDCTL(spdif_control);
971                 /* if only S/PDIF is connected, enable it unconditionally */
972                 if ((onyx->codec.connected & 3) == 2) {
973                         onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
974                         v |= ONYX_SPDIF_ENABLE;
975                         onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
976                 }
977         }
978 #undef ADDCTL
979         printk(KERN_INFO PFX "attached to onyx codec via i2c\n");
980
981         return 0;
982  error:
983         onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
984         snd_device_free(aoa_get_card(), onyx);
985         return err;
986 }
987
988 static void onyx_exit_codec(struct aoa_codec *codec)
989 {
990         struct onyx *onyx = codec_to_onyx(codec);
991
992         if (!onyx->codec.soundbus_dev) {
993                 printk(KERN_ERR PFX "onyx_exit_codec called without soundbus_dev!\n");
994                 return;
995         }
996         onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
997 }
998
999 static int onyx_create(struct i2c_adapter *adapter,
1000                        struct device_node *node,
1001                        int addr)
1002 {
1003         struct i2c_board_info info;
1004         struct i2c_client *client;
1005
1006         memset(&info, 0, sizeof(struct i2c_board_info));
1007         strlcpy(info.type, "aoa_codec_onyx", I2C_NAME_SIZE);
1008         info.addr = addr;
1009         info.platform_data = node;
1010         client = i2c_new_device(adapter, &info);
1011         if (!client)
1012                 return -ENODEV;
1013
1014         /*
1015          * We know the driver is already loaded, so the device should be
1016          * already bound. If not it means binding failed, which suggests
1017          * the device doesn't really exist and should be deleted.
1018          * Ideally this would be replaced by better checks _before_
1019          * instantiating the device.
1020          */
1021         if (!client->driver) {
1022                 i2c_unregister_device(client);
1023                 return -ENODEV;
1024         }
1025
1026         /*
1027          * Let i2c-core delete that device on driver removal.
1028          * This is safe because i2c-core holds the core_lock mutex for us.
1029          */
1030         list_add_tail(&client->detected, &client->driver->clients);
1031         return 0;
1032 }
1033
1034 static int onyx_i2c_probe(struct i2c_client *client,
1035                           const struct i2c_device_id *id)
1036 {
1037         struct device_node *node = client->dev.platform_data;
1038         struct onyx *onyx;
1039         u8 dummy;
1040
1041         onyx = kzalloc(sizeof(struct onyx), GFP_KERNEL);
1042
1043         if (!onyx)
1044                 return -ENOMEM;
1045
1046         mutex_init(&onyx->mutex);
1047         onyx->i2c = client;
1048         i2c_set_clientdata(client, onyx);
1049
1050         /* we try to read from register ONYX_REG_CONTROL
1051          * to check if the codec is present */
1052         if (onyx_read_register(onyx, ONYX_REG_CONTROL, &dummy) != 0) {
1053                 printk(KERN_ERR PFX "failed to read control register\n");
1054                 goto fail;
1055         }
1056
1057         strlcpy(onyx->codec.name, "onyx", MAX_CODEC_NAME_LEN);
1058         onyx->codec.owner = THIS_MODULE;
1059         onyx->codec.init = onyx_init_codec;
1060         onyx->codec.exit = onyx_exit_codec;
1061         onyx->codec.node = of_node_get(node);
1062
1063         if (aoa_codec_register(&onyx->codec)) {
1064                 goto fail;
1065         }
1066         printk(KERN_DEBUG PFX "created and attached onyx instance\n");
1067         return 0;
1068  fail:
1069         i2c_set_clientdata(client, NULL);
1070         kfree(onyx);
1071         return -ENODEV;
1072 }
1073
1074 static int onyx_i2c_attach(struct i2c_adapter *adapter)
1075 {
1076         struct device_node *busnode, *dev = NULL;
1077         struct pmac_i2c_bus *bus;
1078
1079         bus = pmac_i2c_adapter_to_bus(adapter);
1080         if (bus == NULL)
1081                 return -ENODEV;
1082         busnode = pmac_i2c_get_bus_node(bus);
1083
1084         while ((dev = of_get_next_child(busnode, dev)) != NULL) {
1085                 if (of_device_is_compatible(dev, "pcm3052")) {
1086                         const u32 *addr;
1087                         printk(KERN_DEBUG PFX "found pcm3052\n");
1088                         addr = of_get_property(dev, "reg", NULL);
1089                         if (!addr)
1090                                 return -ENODEV;
1091                         return onyx_create(adapter, dev, (*addr)>>1);
1092                 }
1093         }
1094
1095         /* if that didn't work, try desperate mode for older
1096          * machines that have stuff missing from the device tree */
1097
1098         if (!of_device_is_compatible(busnode, "k2-i2c"))
1099                 return -ENODEV;
1100
1101         printk(KERN_DEBUG PFX "found k2-i2c, checking if onyx chip is on it\n");
1102         /* probe both possible addresses for the onyx chip */
1103         if (onyx_create(adapter, NULL, 0x46) == 0)
1104                 return 0;
1105         return onyx_create(adapter, NULL, 0x47);
1106 }
1107
1108 static int onyx_i2c_remove(struct i2c_client *client)
1109 {
1110         struct onyx *onyx = i2c_get_clientdata(client);
1111
1112         aoa_codec_unregister(&onyx->codec);
1113         of_node_put(onyx->codec.node);
1114         if (onyx->codec_info)
1115                 kfree(onyx->codec_info);
1116         i2c_set_clientdata(client, onyx);
1117         kfree(onyx);
1118         return 0;
1119 }
1120
1121 static const struct i2c_device_id onyx_i2c_id[] = {
1122         { "aoa_codec_onyx", 0 },
1123         { }
1124 };
1125
1126 static struct i2c_driver onyx_driver = {
1127         .driver = {
1128                 .name = "aoa_codec_onyx",
1129                 .owner = THIS_MODULE,
1130         },
1131         .attach_adapter = onyx_i2c_attach,
1132         .probe = onyx_i2c_probe,
1133         .remove = onyx_i2c_remove,
1134         .id_table = onyx_i2c_id,
1135 };
1136
1137 static int __init onyx_init(void)
1138 {
1139         return i2c_add_driver(&onyx_driver);
1140 }
1141
1142 static void __exit onyx_exit(void)
1143 {
1144         i2c_del_driver(&onyx_driver);
1145 }
1146
1147 module_init(onyx_init);
1148 module_exit(onyx_exit);