2 * Apple Onboard Audio driver for tas codec
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
6 * GPL v2, can be found in COPYING.
9 * - How to distinguish between 3004 and versions?
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
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...
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.
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
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.
63 #include <linux/i2c.h>
64 #include <asm/pmac_low_i2c.h>
66 #include <linux/delay.h>
67 #include <linux/module.h>
68 #include <linux/mutex.h>
70 MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
71 MODULE_LICENSE("GPL");
72 MODULE_DESCRIPTION("tas codec driver for snd-aoa");
74 #include "snd-aoa-codec-tas.h"
75 #include "snd-aoa-codec-tas-gain-table.h"
76 #include "snd-aoa-codec-tas-basstreble.h"
78 #include "../soundbus/soundbus.h"
80 #define PFX "snd-aoa-codec-tas: "
84 struct aoa_codec codec;
85 struct i2c_client i2c;
86 u32 mute_l:1, mute_r:1 ,
90 u8 cached_volume_l, cached_volume_r;
91 u8 mixer_l[3], mixer_r[3];
95 /* protects hardware access against concurrency from
96 * userspace when hitting controls and during
97 * codec init/suspend/resume */
101 static int tas_reset_init(struct tas *tas);
103 static struct tas *codec_to_tas(struct aoa_codec *codec)
105 return container_of(codec, struct tas, codec);
108 static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
111 return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
113 return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
116 static void tas3004_set_drc(struct tas *tas)
118 unsigned char val[6];
120 if (tas->drc_enabled)
121 val[0] = 0x50; /* 3:1 above threshold */
123 val[0] = 0x51; /* disabled */
124 val[1] = 0x02; /* 1:1 below threshold */
125 if (tas->drc_range > 0xef)
127 else if (tas->drc_range < 0)
130 val[2] = tas->drc_range;
135 tas_write_reg(tas, TAS_REG_DRC, 6, val);
138 static void tas_set_treble(struct tas *tas)
142 tmp = tas3004_treble(tas->treble);
143 tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp);
146 static void tas_set_bass(struct tas *tas)
150 tmp = tas3004_bass(tas->bass);
151 tas_write_reg(tas, TAS_REG_BASS, 1, &tmp);
154 static void tas_set_volume(struct tas *tas)
160 left = tas->cached_volume_l;
161 right = tas->cached_volume_r;
163 if (left > 177) left = 177;
164 if (right > 177) right = 177;
166 if (tas->mute_l) left = 0;
167 if (tas->mute_r) right = 0;
169 /* analysing the volume and mixer tables shows
170 * that they are similar enough when we shift
171 * the mixer table down by 4 bits. The error
172 * is miniscule, in just one item the error
173 * is 1, at a value of 0x07f17b (mixer table
174 * value is 0x07f17a) */
175 tmp = tas_gaintable[left];
179 tmp = tas_gaintable[right];
183 tas_write_reg(tas, TAS_REG_VOL, 6, block);
186 static void tas_set_mixer(struct tas *tas)
193 val = tas->mixer_l[i];
194 if (val > 177) val = 177;
195 tmp = tas_gaintable[val];
196 block[3*i+0] = tmp>>16;
197 block[3*i+1] = tmp>>8;
200 tas_write_reg(tas, TAS_REG_LMIX, 9, block);
203 val = tas->mixer_r[i];
204 if (val > 177) val = 177;
205 tmp = tas_gaintable[val];
206 block[3*i+0] = tmp>>16;
207 block[3*i+1] = tmp>>8;
210 tas_write_reg(tas, TAS_REG_RMIX, 9, block);
215 static int tas_dev_register(struct snd_device *dev)
220 static struct snd_device_ops ops = {
221 .dev_register = tas_dev_register,
224 static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
225 struct snd_ctl_elem_info *uinfo)
227 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
229 uinfo->value.integer.min = 0;
230 uinfo->value.integer.max = 177;
234 static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
235 struct snd_ctl_elem_value *ucontrol)
237 struct tas *tas = snd_kcontrol_chip(kcontrol);
239 mutex_lock(&tas->mtx);
240 ucontrol->value.integer.value[0] = tas->cached_volume_l;
241 ucontrol->value.integer.value[1] = tas->cached_volume_r;
242 mutex_unlock(&tas->mtx);
246 static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
247 struct snd_ctl_elem_value *ucontrol)
249 struct tas *tas = snd_kcontrol_chip(kcontrol);
251 mutex_lock(&tas->mtx);
252 if (tas->cached_volume_l == ucontrol->value.integer.value[0]
253 && tas->cached_volume_r == ucontrol->value.integer.value[1]) {
254 mutex_unlock(&tas->mtx);
258 tas->cached_volume_l = ucontrol->value.integer.value[0];
259 tas->cached_volume_r = ucontrol->value.integer.value[1];
262 mutex_unlock(&tas->mtx);
266 static struct snd_kcontrol_new volume_control = {
267 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
268 .name = "Master Playback Volume",
269 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
270 .info = tas_snd_vol_info,
271 .get = tas_snd_vol_get,
272 .put = tas_snd_vol_put,
275 static int tas_snd_mute_info(struct snd_kcontrol *kcontrol,
276 struct snd_ctl_elem_info *uinfo)
278 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
280 uinfo->value.integer.min = 0;
281 uinfo->value.integer.max = 1;
285 static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
286 struct snd_ctl_elem_value *ucontrol)
288 struct tas *tas = snd_kcontrol_chip(kcontrol);
290 mutex_lock(&tas->mtx);
291 ucontrol->value.integer.value[0] = !tas->mute_l;
292 ucontrol->value.integer.value[1] = !tas->mute_r;
293 mutex_unlock(&tas->mtx);
297 static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
298 struct snd_ctl_elem_value *ucontrol)
300 struct tas *tas = snd_kcontrol_chip(kcontrol);
302 mutex_lock(&tas->mtx);
303 if (tas->mute_l == !ucontrol->value.integer.value[0]
304 && tas->mute_r == !ucontrol->value.integer.value[1]) {
305 mutex_unlock(&tas->mtx);
309 tas->mute_l = !ucontrol->value.integer.value[0];
310 tas->mute_r = !ucontrol->value.integer.value[1];
313 mutex_unlock(&tas->mtx);
317 static struct snd_kcontrol_new mute_control = {
318 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
319 .name = "Master Playback Switch",
320 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
321 .info = tas_snd_mute_info,
322 .get = tas_snd_mute_get,
323 .put = tas_snd_mute_put,
326 static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
327 struct snd_ctl_elem_info *uinfo)
329 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
331 uinfo->value.integer.min = 0;
332 uinfo->value.integer.max = 177;
336 static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
337 struct snd_ctl_elem_value *ucontrol)
339 struct tas *tas = snd_kcontrol_chip(kcontrol);
340 int idx = kcontrol->private_value;
342 mutex_lock(&tas->mtx);
343 ucontrol->value.integer.value[0] = tas->mixer_l[idx];
344 ucontrol->value.integer.value[1] = tas->mixer_r[idx];
345 mutex_unlock(&tas->mtx);
350 static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
351 struct snd_ctl_elem_value *ucontrol)
353 struct tas *tas = snd_kcontrol_chip(kcontrol);
354 int idx = kcontrol->private_value;
356 mutex_lock(&tas->mtx);
357 if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
358 && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) {
359 mutex_unlock(&tas->mtx);
363 tas->mixer_l[idx] = ucontrol->value.integer.value[0];
364 tas->mixer_r[idx] = ucontrol->value.integer.value[1];
368 mutex_unlock(&tas->mtx);
372 #define MIXER_CONTROL(n,descr,idx) \
373 static struct snd_kcontrol_new n##_control = { \
374 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
375 .name = descr " Playback Volume", \
376 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
377 .info = tas_snd_mixer_info, \
378 .get = tas_snd_mixer_get, \
379 .put = tas_snd_mixer_put, \
380 .private_value = idx, \
383 MIXER_CONTROL(pcm1, "PCM", 0);
384 MIXER_CONTROL(monitor, "Monitor", 2);
386 static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
387 struct snd_ctl_elem_info *uinfo)
389 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
391 uinfo->value.integer.min = 0;
392 uinfo->value.integer.max = TAS3004_DRC_MAX;
396 static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
397 struct snd_ctl_elem_value *ucontrol)
399 struct tas *tas = snd_kcontrol_chip(kcontrol);
401 mutex_lock(&tas->mtx);
402 ucontrol->value.integer.value[0] = tas->drc_range;
403 mutex_unlock(&tas->mtx);
407 static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
408 struct snd_ctl_elem_value *ucontrol)
410 struct tas *tas = snd_kcontrol_chip(kcontrol);
412 mutex_lock(&tas->mtx);
413 if (tas->drc_range == ucontrol->value.integer.value[0]) {
414 mutex_unlock(&tas->mtx);
418 tas->drc_range = ucontrol->value.integer.value[0];
420 tas3004_set_drc(tas);
421 mutex_unlock(&tas->mtx);
425 static struct snd_kcontrol_new drc_range_control = {
426 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
428 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
429 .info = tas_snd_drc_range_info,
430 .get = tas_snd_drc_range_get,
431 .put = tas_snd_drc_range_put,
434 static int tas_snd_drc_switch_info(struct snd_kcontrol *kcontrol,
435 struct snd_ctl_elem_info *uinfo)
437 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
439 uinfo->value.integer.min = 0;
440 uinfo->value.integer.max = 1;
444 static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
445 struct snd_ctl_elem_value *ucontrol)
447 struct tas *tas = snd_kcontrol_chip(kcontrol);
449 mutex_lock(&tas->mtx);
450 ucontrol->value.integer.value[0] = tas->drc_enabled;
451 mutex_unlock(&tas->mtx);
455 static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
456 struct snd_ctl_elem_value *ucontrol)
458 struct tas *tas = snd_kcontrol_chip(kcontrol);
460 mutex_lock(&tas->mtx);
461 if (tas->drc_enabled == ucontrol->value.integer.value[0]) {
462 mutex_unlock(&tas->mtx);
466 tas->drc_enabled = ucontrol->value.integer.value[0];
468 tas3004_set_drc(tas);
469 mutex_unlock(&tas->mtx);
473 static struct snd_kcontrol_new drc_switch_control = {
474 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
475 .name = "DRC Range Switch",
476 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
477 .info = tas_snd_drc_switch_info,
478 .get = tas_snd_drc_switch_get,
479 .put = tas_snd_drc_switch_put,
482 static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_info *uinfo)
485 static char *texts[] = { "Line-In", "Microphone" };
487 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
489 uinfo->value.enumerated.items = 2;
490 if (uinfo->value.enumerated.item > 1)
491 uinfo->value.enumerated.item = 1;
492 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
496 static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
497 struct snd_ctl_elem_value *ucontrol)
499 struct tas *tas = snd_kcontrol_chip(kcontrol);
501 mutex_lock(&tas->mtx);
502 ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
503 mutex_unlock(&tas->mtx);
507 static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
508 struct snd_ctl_elem_value *ucontrol)
510 struct tas *tas = snd_kcontrol_chip(kcontrol);
513 mutex_lock(&tas->mtx);
517 * Despite what the data sheet says in one place, the
518 * TAS_ACR_B_MONAUREAL bit forces mono output even when
519 * input A (line in) is selected.
521 tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL);
522 if (ucontrol->value.enumerated.item[0])
523 tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL |
524 TAS_ACR_B_MON_SEL_RIGHT;
525 if (oldacr == tas->acr) {
526 mutex_unlock(&tas->mtx);
530 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
531 mutex_unlock(&tas->mtx);
535 static struct snd_kcontrol_new capture_source_control = {
536 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
537 /* If we name this 'Input Source', it properly shows up in
538 * alsamixer as a selection, * but it's shown under the
539 * 'Playback' category.
540 * If I name it 'Capture Source', it shows up in strange
541 * ways (two bools of which one can be selected at a
542 * time) but at least it's shown in the 'Capture'
544 * I was told that this was due to backward compatibility,
545 * but I don't understand then why the mangling is *not*
546 * done when I name it "Input Source".....
548 .name = "Capture Source",
549 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
550 .info = tas_snd_capture_source_info,
551 .get = tas_snd_capture_source_get,
552 .put = tas_snd_capture_source_put,
555 static int tas_snd_treble_info(struct snd_kcontrol *kcontrol,
556 struct snd_ctl_elem_info *uinfo)
558 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
560 uinfo->value.integer.min = TAS3004_TREBLE_MIN;
561 uinfo->value.integer.max = TAS3004_TREBLE_MAX;
565 static int tas_snd_treble_get(struct snd_kcontrol *kcontrol,
566 struct snd_ctl_elem_value *ucontrol)
568 struct tas *tas = snd_kcontrol_chip(kcontrol);
570 mutex_lock(&tas->mtx);
571 ucontrol->value.integer.value[0] = tas->treble;
572 mutex_unlock(&tas->mtx);
576 static int tas_snd_treble_put(struct snd_kcontrol *kcontrol,
577 struct snd_ctl_elem_value *ucontrol)
579 struct tas *tas = snd_kcontrol_chip(kcontrol);
581 mutex_lock(&tas->mtx);
582 if (tas->treble == ucontrol->value.integer.value[0]) {
583 mutex_unlock(&tas->mtx);
587 tas->treble = ucontrol->value.integer.value[0];
590 mutex_unlock(&tas->mtx);
594 static struct snd_kcontrol_new treble_control = {
595 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
597 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
598 .info = tas_snd_treble_info,
599 .get = tas_snd_treble_get,
600 .put = tas_snd_treble_put,
603 static int tas_snd_bass_info(struct snd_kcontrol *kcontrol,
604 struct snd_ctl_elem_info *uinfo)
606 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
608 uinfo->value.integer.min = TAS3004_BASS_MIN;
609 uinfo->value.integer.max = TAS3004_BASS_MAX;
613 static int tas_snd_bass_get(struct snd_kcontrol *kcontrol,
614 struct snd_ctl_elem_value *ucontrol)
616 struct tas *tas = snd_kcontrol_chip(kcontrol);
618 mutex_lock(&tas->mtx);
619 ucontrol->value.integer.value[0] = tas->bass;
620 mutex_unlock(&tas->mtx);
624 static int tas_snd_bass_put(struct snd_kcontrol *kcontrol,
625 struct snd_ctl_elem_value *ucontrol)
627 struct tas *tas = snd_kcontrol_chip(kcontrol);
629 mutex_lock(&tas->mtx);
630 if (tas->bass == ucontrol->value.integer.value[0]) {
631 mutex_unlock(&tas->mtx);
635 tas->bass = ucontrol->value.integer.value[0];
638 mutex_unlock(&tas->mtx);
642 static struct snd_kcontrol_new bass_control = {
643 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
645 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
646 .info = tas_snd_bass_info,
647 .get = tas_snd_bass_get,
648 .put = tas_snd_bass_put,
651 static struct transfer_info tas_transfers[] = {
654 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
655 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
656 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
661 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
662 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
663 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
669 static int tas_usable(struct codec_info_item *cii,
670 struct transfer_info *ti,
671 struct transfer_info *out)
676 static int tas_reset_init(struct tas *tas)
680 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
682 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
684 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
686 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
688 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
690 tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
691 if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
694 tas->acr |= TAS_ACR_ANALOG_PDOWN;
695 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
699 if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
702 tas3004_set_drc(tas);
704 /* Set treble & bass to 0dB */
705 tas->treble = TAS3004_TREBLE_ZERO;
706 tas->bass = TAS3004_BASS_ZERO;
710 tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
711 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
719 static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
721 struct tas *tas = cii->codec_data;
724 case CLOCK_SWITCH_PREPARE_SLAVE:
725 /* Clocks are going away, mute mute mute */
726 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
729 case CLOCK_SWITCH_SLAVE:
730 /* Clocks are back, re-init the codec */
731 mutex_lock(&tas->mtx);
736 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
737 mutex_unlock(&tas->mtx);
740 /* doesn't happen as of now */
746 /* we are controlled via i2c and assume that is always up
747 * If that wasn't the case, we'd have to suspend once
748 * our i2c device is suspended, and then take note of that! */
749 static int tas_suspend(struct tas *tas)
751 mutex_lock(&tas->mtx);
753 tas->acr |= TAS_ACR_ANALOG_PDOWN;
754 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
755 mutex_unlock(&tas->mtx);
759 static int tas_resume(struct tas *tas)
762 mutex_lock(&tas->mtx);
767 mutex_unlock(&tas->mtx);
772 static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
774 return tas_suspend(cii->codec_data);
777 static int _tas_resume(struct codec_info_item *cii)
779 return tas_resume(cii->codec_data);
783 static struct codec_info tas_codec_info = {
784 .transfers = tas_transfers,
785 /* in theory, we can drive it at 512 too...
786 * but so far the framework doesn't allow
787 * for that and I don't see much point in it. */
788 .sysclock_factor = 256,
789 /* same here, could be 32 for just one 16 bit format */
791 .owner = THIS_MODULE,
792 .usable = tas_usable,
793 .switch_clock = tas_switch_clock,
795 .suspend = _tas_suspend,
796 .resume = _tas_resume,
800 static int tas_init_codec(struct aoa_codec *codec)
802 struct tas *tas = codec_to_tas(codec);
805 if (!tas->codec.gpio || !tas->codec.gpio->methods) {
806 printk(KERN_ERR PFX "gpios not assigned!!\n");
810 mutex_lock(&tas->mtx);
811 if (tas_reset_init(tas)) {
812 printk(KERN_ERR PFX "tas failed to initialise\n");
813 mutex_unlock(&tas->mtx);
817 mutex_unlock(&tas->mtx);
819 if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
821 &tas_codec_info, tas)) {
822 printk(KERN_ERR PFX "error attaching tas to soundbus\n");
826 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
827 printk(KERN_ERR PFX "failed to create tas snd device!\n");
830 err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
834 err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
838 err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
842 err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
846 err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
850 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
854 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
858 err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas));
862 err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas));
868 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
869 snd_device_free(aoa_get_card(), tas);
873 static void tas_exit_codec(struct aoa_codec *codec)
875 struct tas *tas = codec_to_tas(codec);
877 if (!tas->codec.soundbus_dev)
879 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
883 static struct i2c_driver tas_driver;
885 static int tas_create(struct i2c_adapter *adapter,
886 struct device_node *node,
891 tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
896 mutex_init(&tas->mtx);
897 tas->i2c.driver = &tas_driver;
898 tas->i2c.adapter = adapter;
899 tas->i2c.addr = addr;
900 /* seems that half is a saner default */
901 tas->drc_range = TAS3004_DRC_MAX / 2;
902 strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE-1);
904 if (i2c_attach_client(&tas->i2c)) {
905 printk(KERN_ERR PFX "failed to attach to i2c\n");
909 strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN-1);
910 tas->codec.owner = THIS_MODULE;
911 tas->codec.init = tas_init_codec;
912 tas->codec.exit = tas_exit_codec;
913 tas->codec.node = of_node_get(node);
915 if (aoa_codec_register(&tas->codec)) {
919 "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
920 addr, node->full_name);
923 i2c_detach_client(&tas->i2c);
925 mutex_destroy(&tas->mtx);
930 static int tas_i2c_attach(struct i2c_adapter *adapter)
932 struct device_node *busnode, *dev = NULL;
933 struct pmac_i2c_bus *bus;
935 bus = pmac_i2c_adapter_to_bus(adapter);
938 busnode = pmac_i2c_get_bus_node(bus);
940 while ((dev = of_get_next_child(busnode, dev)) != NULL) {
941 if (device_is_compatible(dev, "tas3004")) {
943 printk(KERN_DEBUG PFX "found tas3004\n");
944 addr = of_get_property(dev, "reg", NULL);
947 return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
949 /* older machines have no 'codec' node with a 'compatible'
950 * property that says 'tas3004', they just have a 'deq'
951 * node without any such property... */
952 if (strcmp(dev->name, "deq") == 0) {
955 printk(KERN_DEBUG PFX "found 'deq' node\n");
956 _addr = of_get_property(dev, "i2c-address", NULL);
959 addr = ((*_addr) >> 1) & 0x7f;
960 /* now, if the address doesn't match any of the two
961 * that a tas3004 can have, we cannot handle this.
962 * I doubt it ever happens but hey. */
963 if (addr != 0x34 && addr != 0x35)
965 return tas_create(adapter, dev, addr);
971 static int tas_i2c_detach(struct i2c_client *client)
973 struct tas *tas = container_of(client, struct tas, i2c);
975 u8 tmp = TAS_ACR_ANALOG_PDOWN;
977 if ((err = i2c_detach_client(client)))
979 aoa_codec_unregister(&tas->codec);
980 of_node_put(tas->codec.node);
982 /* power down codec chip */
983 tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);
985 mutex_destroy(&tas->mtx);
990 static struct i2c_driver tas_driver = {
992 .name = "aoa_codec_tas",
993 .owner = THIS_MODULE,
995 .attach_adapter = tas_i2c_attach,
996 .detach_client = tas_i2c_detach,
999 static int __init tas_init(void)
1001 return i2c_add_driver(&tas_driver);
1004 static void __exit tas_exit(void)
1006 i2c_del_driver(&tas_driver);
1009 module_init(tas_init);
1010 module_exit(tas_exit);