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[PATCH] aoa: layout fabric: add missing module aliases
[deliverable/linux.git] / sound / aoa / codecs / snd-aoa-codec-tas.c
CommitLineData
f3d9478b
JB		 1/*
2 * Apple Onboard Audio driver for tas codec
3 *
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * GPL v2, can be found in COPYING.
7 *
8 * Open questions:
9 * - How to distinguish between 3004 and versions?
10 *
11 * FIXMEs:
12 * - This codec driver doesn't honour the 'connected'
13 * property of the aoa_codec struct, hence if
14 * it is used in machines where not everything is
15 * connected it will display wrong mixer elements.
16 * - Driver assumes that the microphone is always
17 * monaureal and connected to the right channel of
18 * the input. This should also be a codec-dependent
19 * flag, maybe the codec should have 3 different
20 * bits for the three different possibilities how
21 * it can be hooked up...
22 * But as long as I don't see any hardware hooked
23 * up that way...
24 * - As Apple notes in their code, the tas3004 seems
25 * to delay the right channel by one sample. You can
26 * see this when for example recording stereo in
27 * audacity, or recording the tas output via cable
28 * on another machine (use a sinus generator or so).
29 * I tried programming the BiQuads but couldn't
30 * make the delay work, maybe someone can read the
31 * datasheet and fix it. The relevant Apple comment
32 * is in AppleTAS3004Audio.cpp lines 1637 ff. Note
33 * that their comment describing how they program
34 * the filters sucks...
35 *
36 * Other things:
37 * - this should actually register *two* aoa_codec
38 * structs since it has two inputs. Then it must
39 * use the prepare callback to forbid running the
40 * secondary output on a different clock.
41 * Also, whatever bus knows how to do this must
42 * provide two soundbus_dev devices and the fabric
43 * must be able to link them correctly.
44 *
45 * I don't even know if Apple ever uses the second
46 * port on the tas3004 though, I don't think their
47 * i2s controllers can even do it. OTOH, they all
48 * derive the clocks from common clocks, so it
49 * might just be possible. The framework allows the
50 * codec to refine the transfer_info items in the
51 * usable callback, so we can simply remove the
52 * rates the second instance is not using when it
53 * actually is in use.
54 * Maybe we'll need to make the sound busses have
55 * a 'clock group id' value so the codec can
56 * determine if the two outputs can be driven at
57 * the same time. But that is likely overkill, up
58 * to the fabric to not link them up incorrectly,
59 * and up to the hardware designer to not wire
60 * them up in some weird unusable way.
61 */
62#include <stddef.h>
63#include <linux/i2c.h>
64#include <linux/i2c-dev.h>
65#include <asm/pmac_low_i2c.h>
66#include <asm/prom.h>
67#include <linux/delay.h>
68#include <linux/module.h>
69MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
70MODULE_LICENSE("GPL");
71MODULE_DESCRIPTION("tas codec driver for snd-aoa");
72
73#include "snd-aoa-codec-tas.h"
74#include "snd-aoa-codec-tas-gain-table.h"
75#include "../aoa.h"
76#include "../soundbus/soundbus.h"
77
f3d9478b
JB		 78#define PFX "snd-aoa-codec-tas: "
79
6a4f5787 80
f3d9478b
JB		 81struct tas {
82 struct aoa_codec codec;
83 struct i2c_client i2c;
6a4f5787
BH		 84 u32 mute_l:1, mute_r:1 ,
85 controls_created:1 ,
86 drc_enabled:1,
87 hw_enabled:1;
f3d9478b
JB		 88 u8 cached_volume_l, cached_volume_r;
89 u8 mixer_l[3], mixer_r[3];
90 u8 acr;
6a4f5787 91 int drc_range;
f3d9478b
JB		 92};
93
6a4f5787
BH		 94static int tas_reset_init(struct tas *tas);
95
f3d9478b
JB		 96static struct tas *codec_to_tas(struct aoa_codec *codec)
97{
98 return container_of(codec, struct tas, codec);
99}
100
101static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
102{
103 if (len == 1)
104 return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
105 else
106 return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
107}
108
6a4f5787
BH		 109static void tas3004_set_drc(struct tas *tas)
110{
111 unsigned char val[6];
112
113 if (tas->drc_enabled)
114 val[0] = 0x50; /* 3:1 above threshold */
115 else
116 val[0] = 0x51; /* disabled */
117 val[1] = 0x02; /* 1:1 below threshold */
118 if (tas->drc_range > 0xef)
119 val[2] = 0xef;
120 else if (tas->drc_range < 0)
121 val[2] = 0x00;
122 else
123 val[2] = tas->drc_range;
124 val[3] = 0xb0;
125 val[4] = 0x60;
126 val[5] = 0xa0;
127
128 tas_write_reg(tas, TAS_REG_DRC, 6, val);
129}
130
f3d9478b
JB		 131static void tas_set_volume(struct tas *tas)
132{
133 u8 block[6];
134 int tmp;
135 u8 left, right;
136
137 left = tas->cached_volume_l;
138 right = tas->cached_volume_r;
139
140 if (left > 177) left = 177;
141 if (right > 177) right = 177;
142
6a4f5787
BH		 143 if (tas->mute_l) left = 0;
144 if (tas->mute_r) right = 0;
f3d9478b
JB		 145
146 /* analysing the volume and mixer tables shows
147 * that they are similar enough when we shift
148 * the mixer table down by 4 bits. The error
149 * is miniscule, in just one item the error
150 * is 1, at a value of 0x07f17b (mixer table
151 * value is 0x07f17a) */
152 tmp = tas_gaintable[left];
153 block[0] = tmp>>20;
154 block[1] = tmp>>12;
155 block[2] = tmp>>4;
156 tmp = tas_gaintable[right];
157 block[3] = tmp>>20;
158 block[4] = tmp>>12;
159 block[5] = tmp>>4;
160 tas_write_reg(tas, TAS_REG_VOL, 6, block);
161}
162
163static void tas_set_mixer(struct tas *tas)
164{
165 u8 block[9];
166 int tmp, i;
167 u8 val;
168
169 for (i=0;i<3;i++) {
170 val = tas->mixer_l[i];
171 if (val > 177) val = 177;
172 tmp = tas_gaintable[val];
173 block[3*i+0] = tmp>>16;
174 block[3*i+1] = tmp>>8;
175 block[3*i+2] = tmp;
176 }
177 tas_write_reg(tas, TAS_REG_LMIX, 9, block);
178
179 for (i=0;i<3;i++) {
180 val = tas->mixer_r[i];
181 if (val > 177) val = 177;
182 tmp = tas_gaintable[val];
183 block[3*i+0] = tmp>>16;
184 block[3*i+1] = tmp>>8;
185 block[3*i+2] = tmp;
186 }
187 tas_write_reg(tas, TAS_REG_RMIX, 9, block);
188}
189
190/* alsa stuff */
191
192static int tas_dev_register(struct snd_device *dev)
193{
194 return 0;
195}
196
197static struct snd_device_ops ops = {
198 .dev_register = tas_dev_register,
199};
200
201static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
202 struct snd_ctl_elem_info *uinfo)
203{
204 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
205 uinfo->count = 2;
206 uinfo->value.integer.min = 0;
207 uinfo->value.integer.max = 177;
208 return 0;
209}
210
211static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
212 struct snd_ctl_elem_value *ucontrol)
213{
214 struct tas *tas = snd_kcontrol_chip(kcontrol);
215
216 ucontrol->value.integer.value[0] = tas->cached_volume_l;
217 ucontrol->value.integer.value[1] = tas->cached_volume_r;
218 return 0;
219}
220
221static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
222 struct snd_ctl_elem_value *ucontrol)
223{
224 struct tas *tas = snd_kcontrol_chip(kcontrol);
225
226 if (tas->cached_volume_l == ucontrol->value.integer.value[0]
227 && tas->cached_volume_r == ucontrol->value.integer.value[1])
228 return 0;
229
230 tas->cached_volume_l = ucontrol->value.integer.value[0];
231 tas->cached_volume_r = ucontrol->value.integer.value[1];
6a4f5787
BH		 232 if (tas->hw_enabled)
233 tas_set_volume(tas);
f3d9478b
JB		 234 return 1;
235}
236
237static struct snd_kcontrol_new volume_control = {
238 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
239 .name = "Master Playback Volume",
240 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
241 .info = tas_snd_vol_info,
242 .get = tas_snd_vol_get,
243 .put = tas_snd_vol_put,
244};
245
246static int tas_snd_mute_info(struct snd_kcontrol *kcontrol,
247 struct snd_ctl_elem_info *uinfo)
248{
249 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
250 uinfo->count = 2;
251 uinfo->value.integer.min = 0;
252 uinfo->value.integer.max = 1;
253 return 0;
254}
255
256static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
257 struct snd_ctl_elem_value *ucontrol)
258{
259 struct tas *tas = snd_kcontrol_chip(kcontrol);
260
6a4f5787
BH		 261 ucontrol->value.integer.value[0] = !tas->mute_l;
262 ucontrol->value.integer.value[1] = !tas->mute_r;
f3d9478b
JB		 263 return 0;
264}
265
266static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
267 struct snd_ctl_elem_value *ucontrol)
268{
269 struct tas *tas = snd_kcontrol_chip(kcontrol);
270
6a4f5787
BH		 271 if (tas->mute_l == !ucontrol->value.integer.value[0]
272 && tas->mute_r == !ucontrol->value.integer.value[1])
f3d9478b
JB		 273 return 0;
274
6a4f5787
BH		 275 tas->mute_l = !ucontrol->value.integer.value[0];
276 tas->mute_r = !ucontrol->value.integer.value[1];
277 if (tas->hw_enabled)
278 tas_set_volume(tas);
f3d9478b
JB		 279 return 1;
280}
281
282static struct snd_kcontrol_new mute_control = {
283 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
284 .name = "Master Playback Switch",
285 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
286 .info = tas_snd_mute_info,
287 .get = tas_snd_mute_get,
288 .put = tas_snd_mute_put,
289};
290
291static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
292 struct snd_ctl_elem_info *uinfo)
293{
294 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
295 uinfo->count = 2;
296 uinfo->value.integer.min = 0;
297 uinfo->value.integer.max = 177;
298 return 0;
299}
300
301static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
302 struct snd_ctl_elem_value *ucontrol)
303{
304 struct tas *tas = snd_kcontrol_chip(kcontrol);
305 int idx = kcontrol->private_value;
306
307 ucontrol->value.integer.value[0] = tas->mixer_l[idx];
308 ucontrol->value.integer.value[1] = tas->mixer_r[idx];
309
310 return 0;
311}
312
313static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
314 struct snd_ctl_elem_value *ucontrol)
315{
316 struct tas *tas = snd_kcontrol_chip(kcontrol);
317 int idx = kcontrol->private_value;
318
319 if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
320 && tas->mixer_r[idx] == ucontrol->value.integer.value[1])
321 return 0;
322
323 tas->mixer_l[idx] = ucontrol->value.integer.value[0];
324 tas->mixer_r[idx] = ucontrol->value.integer.value[1];
325
6a4f5787
BH		 326 if (tas->hw_enabled)
327 tas_set_mixer(tas);
f3d9478b
JB		 328 return 1;
329}
330
331#define MIXER_CONTROL(n,descr,idx) \
332static struct snd_kcontrol_new n##_control = { \
333 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
334 .name = descr " Playback Volume", \
335 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
336 .info = tas_snd_mixer_info, \
337 .get = tas_snd_mixer_get, \
338 .put = tas_snd_mixer_put, \
339 .private_value = idx, \
340}
341
14b42963 342MIXER_CONTROL(pcm1, "PCM", 0);
f3d9478b
JB		 343MIXER_CONTROL(monitor, "Monitor", 2);
344
9b8f52f5
JB		 345static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
346 struct snd_ctl_elem_info *uinfo)
347{
348 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
349 uinfo->count = 1;
350 uinfo->value.integer.min = 0;
351 uinfo->value.integer.max = TAS3004_DRC_MAX;
352 return 0;
353}
354
355static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
356 struct snd_ctl_elem_value *ucontrol)
357{
358 struct tas *tas = snd_kcontrol_chip(kcontrol);
359
360 ucontrol->value.integer.value[0] = tas->drc_range;
361 return 0;
362}
363
364static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
365 struct snd_ctl_elem_value *ucontrol)
366{
367 struct tas *tas = snd_kcontrol_chip(kcontrol);
368
369 if (tas->drc_range == ucontrol->value.integer.value[0])
370 return 0;
371
372 tas->drc_range = ucontrol->value.integer.value[0];
373 if (tas->hw_enabled)
374 tas3004_set_drc(tas);
375 return 1;
376}
377
378static struct snd_kcontrol_new drc_range_control = {
379 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
380 .name = "DRC Range",
381 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
382 .info = tas_snd_drc_range_info,
383 .get = tas_snd_drc_range_get,
384 .put = tas_snd_drc_range_put,
385};
386
387static int tas_snd_drc_switch_info(struct snd_kcontrol *kcontrol,
388 struct snd_ctl_elem_info *uinfo)
389{
390 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
391 uinfo->count = 1;
392 uinfo->value.integer.min = 0;
393 uinfo->value.integer.max = 1;
394 return 0;
395}
396
397static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
398 struct snd_ctl_elem_value *ucontrol)
399{
400 struct tas *tas = snd_kcontrol_chip(kcontrol);
401
402 ucontrol->value.integer.value[0] = tas->drc_enabled;
403 return 0;
404}
405
406static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
407 struct snd_ctl_elem_value *ucontrol)
408{
409 struct tas *tas = snd_kcontrol_chip(kcontrol);
410
411 if (tas->drc_enabled == ucontrol->value.integer.value[0])
412 return 0;
413
414 tas->drc_enabled = ucontrol->value.integer.value[0];
415 if (tas->hw_enabled)
416 tas3004_set_drc(tas);
417 return 1;
418}
419
420static struct snd_kcontrol_new drc_switch_control = {
421 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
422 .name = "DRC Range Switch",
423 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
424 .info = tas_snd_drc_switch_info,
425 .get = tas_snd_drc_switch_get,
426 .put = tas_snd_drc_switch_put,
427};
428
f3d9478b
JB		 429static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
430 struct snd_ctl_elem_info *uinfo)
431{
432 static char *texts[] = { "Line-In", "Microphone" };
433
434 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
435 uinfo->count = 1;
436 uinfo->value.enumerated.items = 2;
437 if (uinfo->value.enumerated.item > 1)
438 uinfo->value.enumerated.item = 1;
439 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
440 return 0;
441}
442
443static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
444 struct snd_ctl_elem_value *ucontrol)
445{
446 struct tas *tas = snd_kcontrol_chip(kcontrol);
447
448 ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
449 return 0;
450}
451
452static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
453 struct snd_ctl_elem_value *ucontrol)
454{
455 struct tas *tas = snd_kcontrol_chip(kcontrol);
456 int oldacr = tas->acr;
457
458 tas->acr &= ~TAS_ACR_INPUT_B;
459 if (ucontrol->value.enumerated.item[0])
460 tas->acr |= TAS_ACR_INPUT_B;
461 if (oldacr == tas->acr)
462 return 0;
6a4f5787
BH		 463 if (tas->hw_enabled)
464 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
f3d9478b
JB		 465 return 1;
466}
467
468static struct snd_kcontrol_new capture_source_control = {
469 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
470 /* If we name this 'Input Source', it properly shows up in
471 * alsamixer as a selection, * but it's shown under the
472 * 'Playback' category.
473 * If I name it 'Capture Source', it shows up in strange
474 * ways (two bools of which one can be selected at a
475 * time) but at least it's shown in the 'Capture'
476 * category.
477 * I was told that this was due to backward compatibility,
478 * but I don't understand then why the mangling is *not*
479 * done when I name it "Input Source".....
480 */
481 .name = "Capture Source",
482 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
483 .info = tas_snd_capture_source_info,
484 .get = tas_snd_capture_source_get,
485 .put = tas_snd_capture_source_put,
486};
487
488
489static struct transfer_info tas_transfers[] = {
490 {
491 /* input */
492 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
493 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
494 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
495 .transfer_in = 1,
496 },
497 {
498 /* output */
499 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
500 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
501 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
502 .transfer_in = 0,
503 },
504 {}
505};
506
507static int tas_usable(struct codec_info_item *cii,
508 struct transfer_info *ti,
509 struct transfer_info *out)
510{
511 return 1;
512}
513
514static int tas_reset_init(struct tas *tas)
515{
516 u8 tmp;
6a4f5787
BH		 517
518 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
519 msleep(5);
f3d9478b 520 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
6a4f5787 521 msleep(5);
f3d9478b 522 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
6a4f5787 523 msleep(20);
f3d9478b 524 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
6a4f5787
BH		 525 msleep(10);
526 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
f3d9478b
JB		 527
528 tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
529 if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
530 return -ENODEV;
531
6a4f5787
BH		 532 tas->acr |= TAS_ACR_ANALOG_PDOWN | TAS_ACR_B_MONAUREAL |
533 TAS_ACR_B_MON_SEL_RIGHT;
534 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
535 return -ENODEV;
536
f3d9478b
JB		 537 tmp = 0;
538 if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
539 return -ENODEV;
540
6a4f5787
BH		 541 tas3004_set_drc(tas);
542
543 /* Set treble & bass to 0dB */
544 tmp = 114;
545 tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp);
546 tas_write_reg(tas, TAS_REG_BASS, 1, &tmp);
547
548 tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
549 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
550 return -ENODEV;
551
552 return 0;
553}
554
555static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
556{
557 struct tas *tas = cii->codec_data;
558
559 switch(clock) {
560 case CLOCK_SWITCH_PREPARE_SLAVE:
561 /* Clocks are going away, mute mute mute */
562 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
563 tas->hw_enabled = 0;
564 break;
565 case CLOCK_SWITCH_SLAVE:
566 /* Clocks are back, re-init the codec */
567 tas_reset_init(tas);
568 tas_set_volume(tas);
569 tas_set_mixer(tas);
570 tas->hw_enabled = 1;
571 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
572 break;
573 default:
574 /* doesn't happen as of now */
575 return -EINVAL;
576 }
f3d9478b
JB		 577 return 0;
578}
579
580/* we are controlled via i2c and assume that is always up
581 * If that wasn't the case, we'd have to suspend once
582 * our i2c device is suspended, and then take note of that! */
583static int tas_suspend(struct tas *tas)
584{
6a4f5787 585 tas->hw_enabled = 0;
f3d9478b
JB		 586 tas->acr |= TAS_ACR_ANALOG_PDOWN;
587 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
588 return 0;
589}
590
591static int tas_resume(struct tas *tas)
592{
593 /* reset codec */
594 tas_reset_init(tas);
595 tas_set_volume(tas);
596 tas_set_mixer(tas);
6a4f5787 597 tas->hw_enabled = 1;
f3d9478b
JB		 598 return 0;
599}
600
601#ifdef CONFIG_PM
602static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
603{
604 return tas_suspend(cii->codec_data);
605}
606
607static int _tas_resume(struct codec_info_item *cii)
608{
609 return tas_resume(cii->codec_data);
610}
611#endif
612
613static struct codec_info tas_codec_info = {
614 .transfers = tas_transfers,
615 /* in theory, we can drive it at 512 too...
616 * but so far the framework doesn't allow
617 * for that and I don't see much point in it. */
618 .sysclock_factor = 256,
619 /* same here, could be 32 for just one 16 bit format */
620 .bus_factor = 64,
621 .owner = THIS_MODULE,
622 .usable = tas_usable,
6a4f5787 623 .switch_clock = tas_switch_clock,
f3d9478b
JB		 624#ifdef CONFIG_PM
625 .suspend = _tas_suspend,
626 .resume = _tas_resume,
627#endif
628};
629
630static int tas_init_codec(struct aoa_codec *codec)
631{
632 struct tas *tas = codec_to_tas(codec);
633 int err;
634
635 if (!tas->codec.gpio || !tas->codec.gpio->methods) {
636 printk(KERN_ERR PFX "gpios not assigned!!\n");
637 return -EINVAL;
638 }
639
640 if (tas_reset_init(tas)) {
641 printk(KERN_ERR PFX "tas failed to initialise\n");
642 return -ENXIO;
643 }
6a4f5787 644 tas->hw_enabled = 1;
f3d9478b
JB		 645
646 if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
647 aoa_get_card(),
648 &tas_codec_info, tas)) {
649 printk(KERN_ERR PFX "error attaching tas to soundbus\n");
650 return -ENODEV;
651 }
652
653 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
654 printk(KERN_ERR PFX "failed to create tas snd device!\n");
655 return -ENODEV;
656 }
657 err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
658 if (err)
659 goto error;
660
661 err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
662 if (err)
663 goto error;
664
665 err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
666 if (err)
667 goto error;
668
669 err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
670 if (err)
671 goto error;
672
673 err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
674 if (err)
675 goto error;
676
9b8f52f5
JB		 677 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
678 if (err)
679 goto error;
680
681 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
682 if (err)
683 goto error;
684
f3d9478b
JB		 685 return 0;
686 error:
687 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
688 snd_device_free(aoa_get_card(), tas);
689 return err;
690}
691
692static void tas_exit_codec(struct aoa_codec *codec)
693{
694 struct tas *tas = codec_to_tas(codec);
695
696 if (!tas->codec.soundbus_dev)
697 return;
698 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
699}
700
701
702static struct i2c_driver tas_driver;
703
704static int tas_create(struct i2c_adapter *adapter,
705 struct device_node *node,
706 int addr)
707{
708 struct tas *tas;
709
710 tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
711
712 if (!tas)
713 return -ENOMEM;
714
715 tas->i2c.driver = &tas_driver;
716 tas->i2c.adapter = adapter;
717 tas->i2c.addr = addr;
9b8f52f5
JB		 718 /* seems that half is a saner default */
719 tas->drc_range = TAS3004_DRC_MAX / 2;
f3d9478b
JB		 720 strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE-1);
721
722 if (i2c_attach_client(&tas->i2c)) {
723 printk(KERN_ERR PFX "failed to attach to i2c\n");
724 goto fail;
725 }
726
727 strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN-1);
728 tas->codec.owner = THIS_MODULE;
729 tas->codec.init = tas_init_codec;
730 tas->codec.exit = tas_exit_codec;
731 tas->codec.node = of_node_get(node);
732
733 if (aoa_codec_register(&tas->codec)) {
734 goto detach;
735 }
6a4f5787
BH		 736 printk(KERN_DEBUG
737 "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
738 addr, node->full_name);
f3d9478b
JB		 739 return 0;
740 detach:
741 i2c_detach_client(&tas->i2c);
742 fail:
743 kfree(tas);
744 return -EINVAL;
745}
746
747static int tas_i2c_attach(struct i2c_adapter *adapter)
748{
749 struct device_node *busnode, *dev = NULL;
750 struct pmac_i2c_bus *bus;
751
752 bus = pmac_i2c_adapter_to_bus(adapter);
753 if (bus == NULL)
754 return -ENODEV;
755 busnode = pmac_i2c_get_bus_node(bus);
756
757 while ((dev = of_get_next_child(busnode, dev)) != NULL) {
758 if (device_is_compatible(dev, "tas3004")) {
759 u32 *addr;
760 printk(KERN_DEBUG PFX "found tas3004\n");
761 addr = (u32 *) get_property(dev, "reg", NULL);
762 if (!addr)
763 continue;
764 return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
765 }
766 /* older machines have no 'codec' node with a 'compatible'
767 * property that says 'tas3004', they just have a 'deq'
768 * node without any such property... */
769 if (strcmp(dev->name, "deq") == 0) {
770 u32 *_addr, addr;
771 printk(KERN_DEBUG PFX "found 'deq' node\n");
772 _addr = (u32 *) get_property(dev, "i2c-address", NULL);
773 if (!_addr)
774 continue;
775 addr = ((*_addr) >> 1) & 0x7f;
776 /* now, if the address doesn't match any of the two
777 * that a tas3004 can have, we cannot handle this.
778 * I doubt it ever happens but hey. */
779 if (addr != 0x34 && addr != 0x35)
780 continue;
781 return tas_create(adapter, dev, addr);
782 }
783 }
784 return -ENODEV;
785}
786
787static int tas_i2c_detach(struct i2c_client *client)
788{
789 struct tas *tas = container_of(client, struct tas, i2c);
790 int err;
791 u8 tmp = TAS_ACR_ANALOG_PDOWN;
792
793 if ((err = i2c_detach_client(client)))
794 return err;
795 aoa_codec_unregister(&tas->codec);
796 of_node_put(tas->codec.node);
797
798 /* power down codec chip */
799 tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);
800
801 kfree(tas);
802 return 0;
803}
804
805static struct i2c_driver tas_driver = {
806 .driver = {
807 .name = "aoa_codec_tas",
808 .owner = THIS_MODULE,
809 },
810 .attach_adapter = tas_i2c_attach,
811 .detach_client = tas_i2c_detach,
812};
813
814static int __init tas_init(void)
815{
816 return i2c_add_driver(&tas_driver);
817}
818
819static void __exit tas_exit(void)
820{
821 i2c_del_driver(&tas_driver);
822}
823
824module_init(tas_init);
825module_exit(tas_exit);
Linux kernel - Deliverables
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