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 <linux/i2c-dev.h>
65 #include <asm/pmac_low_i2c.h>
67 #include <linux/delay.h>
68 #include <linux/module.h>
69 #include <linux/mutex.h>
71 MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
72 MODULE_LICENSE("GPL");
73 MODULE_DESCRIPTION("tas codec driver for snd-aoa");
75 #include "snd-aoa-codec-tas.h"
76 #include "snd-aoa-codec-tas-gain-table.h"
77 #include "snd-aoa-codec-tas-basstreble.h"
79 #include "../soundbus/soundbus.h"
81 #define PFX "snd-aoa-codec-tas: "
85 struct aoa_codec codec;
86 struct i2c_client i2c;
87 u32 mute_l:1, mute_r:1 ,
91 u8 cached_volume_l, cached_volume_r;
92 u8 mixer_l[3], mixer_r[3];
96 /* protects hardware access against concurrency from
97 * userspace when hitting controls and during
98 * codec init/suspend/resume */
102 static int tas_reset_init(struct tas *tas);
104 static struct tas *codec_to_tas(struct aoa_codec *codec)
106 return container_of(codec, struct tas, codec);
109 static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
112 return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
114 return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
117 static void tas3004_set_drc(struct tas *tas)
119 unsigned char val[6];
121 if (tas->drc_enabled)
122 val[0] = 0x50; /* 3:1 above threshold */
124 val[0] = 0x51; /* disabled */
125 val[1] = 0x02; /* 1:1 below threshold */
126 if (tas->drc_range > 0xef)
128 else if (tas->drc_range < 0)
131 val[2] = tas->drc_range;
136 tas_write_reg(tas, TAS_REG_DRC, 6, val);
139 static void tas_set_treble(struct tas *tas)
143 tmp = tas3004_treble(tas->treble);
144 tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp);
147 static void tas_set_bass(struct tas *tas)
151 tmp = tas3004_bass(tas->bass);
152 tas_write_reg(tas, TAS_REG_BASS, 1, &tmp);
155 static void tas_set_volume(struct tas *tas)
161 left = tas->cached_volume_l;
162 right = tas->cached_volume_r;
164 if (left > 177) left = 177;
165 if (right > 177) right = 177;
167 if (tas->mute_l) left = 0;
168 if (tas->mute_r) right = 0;
170 /* analysing the volume and mixer tables shows
171 * that they are similar enough when we shift
172 * the mixer table down by 4 bits. The error
173 * is miniscule, in just one item the error
174 * is 1, at a value of 0x07f17b (mixer table
175 * value is 0x07f17a) */
176 tmp = tas_gaintable[left];
180 tmp = tas_gaintable[right];
184 tas_write_reg(tas, TAS_REG_VOL, 6, block);
187 static void tas_set_mixer(struct tas *tas)
194 val = tas->mixer_l[i];
195 if (val > 177) val = 177;
196 tmp = tas_gaintable[val];
197 block[3*i+0] = tmp>>16;
198 block[3*i+1] = tmp>>8;
201 tas_write_reg(tas, TAS_REG_LMIX, 9, block);
204 val = tas->mixer_r[i];
205 if (val > 177) val = 177;
206 tmp = tas_gaintable[val];
207 block[3*i+0] = tmp>>16;
208 block[3*i+1] = tmp>>8;
211 tas_write_reg(tas, TAS_REG_RMIX, 9, block);
216 static int tas_dev_register(struct snd_device *dev)
221 static struct snd_device_ops ops = {
222 .dev_register = tas_dev_register,
225 static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
226 struct snd_ctl_elem_info *uinfo)
228 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
230 uinfo->value.integer.min = 0;
231 uinfo->value.integer.max = 177;
235 static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
236 struct snd_ctl_elem_value *ucontrol)
238 struct tas *tas = snd_kcontrol_chip(kcontrol);
240 mutex_lock(&tas->mtx);
241 ucontrol->value.integer.value[0] = tas->cached_volume_l;
242 ucontrol->value.integer.value[1] = tas->cached_volume_r;
243 mutex_unlock(&tas->mtx);
247 static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
248 struct snd_ctl_elem_value *ucontrol)
250 struct tas *tas = snd_kcontrol_chip(kcontrol);
252 mutex_lock(&tas->mtx);
253 if (tas->cached_volume_l == ucontrol->value.integer.value[0]
254 && tas->cached_volume_r == ucontrol->value.integer.value[1]) {
255 mutex_unlock(&tas->mtx);
259 tas->cached_volume_l = ucontrol->value.integer.value[0];
260 tas->cached_volume_r = ucontrol->value.integer.value[1];
263 mutex_unlock(&tas->mtx);
267 static struct snd_kcontrol_new volume_control = {
268 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
269 .name = "Master Playback Volume",
270 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
271 .info = tas_snd_vol_info,
272 .get = tas_snd_vol_get,
273 .put = tas_snd_vol_put,
276 static int tas_snd_mute_info(struct snd_kcontrol *kcontrol,
277 struct snd_ctl_elem_info *uinfo)
279 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
281 uinfo->value.integer.min = 0;
282 uinfo->value.integer.max = 1;
286 static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
287 struct snd_ctl_elem_value *ucontrol)
289 struct tas *tas = snd_kcontrol_chip(kcontrol);
291 mutex_lock(&tas->mtx);
292 ucontrol->value.integer.value[0] = !tas->mute_l;
293 ucontrol->value.integer.value[1] = !tas->mute_r;
294 mutex_unlock(&tas->mtx);
298 static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
299 struct snd_ctl_elem_value *ucontrol)
301 struct tas *tas = snd_kcontrol_chip(kcontrol);
303 mutex_lock(&tas->mtx);
304 if (tas->mute_l == !ucontrol->value.integer.value[0]
305 && tas->mute_r == !ucontrol->value.integer.value[1]) {
306 mutex_unlock(&tas->mtx);
310 tas->mute_l = !ucontrol->value.integer.value[0];
311 tas->mute_r = !ucontrol->value.integer.value[1];
314 mutex_unlock(&tas->mtx);
318 static struct snd_kcontrol_new mute_control = {
319 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
320 .name = "Master Playback Switch",
321 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
322 .info = tas_snd_mute_info,
323 .get = tas_snd_mute_get,
324 .put = tas_snd_mute_put,
327 static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
328 struct snd_ctl_elem_info *uinfo)
330 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
332 uinfo->value.integer.min = 0;
333 uinfo->value.integer.max = 177;
337 static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
338 struct snd_ctl_elem_value *ucontrol)
340 struct tas *tas = snd_kcontrol_chip(kcontrol);
341 int idx = kcontrol->private_value;
343 mutex_lock(&tas->mtx);
344 ucontrol->value.integer.value[0] = tas->mixer_l[idx];
345 ucontrol->value.integer.value[1] = tas->mixer_r[idx];
346 mutex_unlock(&tas->mtx);
351 static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
352 struct snd_ctl_elem_value *ucontrol)
354 struct tas *tas = snd_kcontrol_chip(kcontrol);
355 int idx = kcontrol->private_value;
357 mutex_lock(&tas->mtx);
358 if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
359 && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) {
360 mutex_unlock(&tas->mtx);
364 tas->mixer_l[idx] = ucontrol->value.integer.value[0];
365 tas->mixer_r[idx] = ucontrol->value.integer.value[1];
369 mutex_unlock(&tas->mtx);
373 #define MIXER_CONTROL(n,descr,idx) \
374 static struct snd_kcontrol_new n##_control = { \
375 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
376 .name = descr " Playback Volume", \
377 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
378 .info = tas_snd_mixer_info, \
379 .get = tas_snd_mixer_get, \
380 .put = tas_snd_mixer_put, \
381 .private_value = idx, \
384 MIXER_CONTROL(pcm1, "PCM", 0);
385 MIXER_CONTROL(monitor, "Monitor", 2);
387 static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
388 struct snd_ctl_elem_info *uinfo)
390 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
392 uinfo->value.integer.min = 0;
393 uinfo->value.integer.max = TAS3004_DRC_MAX;
397 static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
398 struct snd_ctl_elem_value *ucontrol)
400 struct tas *tas = snd_kcontrol_chip(kcontrol);
402 mutex_lock(&tas->mtx);
403 ucontrol->value.integer.value[0] = tas->drc_range;
404 mutex_unlock(&tas->mtx);
408 static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
409 struct snd_ctl_elem_value *ucontrol)
411 struct tas *tas = snd_kcontrol_chip(kcontrol);
413 mutex_lock(&tas->mtx);
414 if (tas->drc_range == ucontrol->value.integer.value[0]) {
415 mutex_unlock(&tas->mtx);
419 tas->drc_range = ucontrol->value.integer.value[0];
421 tas3004_set_drc(tas);
422 mutex_unlock(&tas->mtx);
426 static struct snd_kcontrol_new drc_range_control = {
427 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
429 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
430 .info = tas_snd_drc_range_info,
431 .get = tas_snd_drc_range_get,
432 .put = tas_snd_drc_range_put,
435 static int tas_snd_drc_switch_info(struct snd_kcontrol *kcontrol,
436 struct snd_ctl_elem_info *uinfo)
438 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
440 uinfo->value.integer.min = 0;
441 uinfo->value.integer.max = 1;
445 static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
446 struct snd_ctl_elem_value *ucontrol)
448 struct tas *tas = snd_kcontrol_chip(kcontrol);
450 mutex_lock(&tas->mtx);
451 ucontrol->value.integer.value[0] = tas->drc_enabled;
452 mutex_unlock(&tas->mtx);
456 static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
457 struct snd_ctl_elem_value *ucontrol)
459 struct tas *tas = snd_kcontrol_chip(kcontrol);
461 mutex_lock(&tas->mtx);
462 if (tas->drc_enabled == ucontrol->value.integer.value[0]) {
463 mutex_unlock(&tas->mtx);
467 tas->drc_enabled = ucontrol->value.integer.value[0];
469 tas3004_set_drc(tas);
470 mutex_unlock(&tas->mtx);
474 static struct snd_kcontrol_new drc_switch_control = {
475 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
476 .name = "DRC Range Switch",
477 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
478 .info = tas_snd_drc_switch_info,
479 .get = tas_snd_drc_switch_get,
480 .put = tas_snd_drc_switch_put,
483 static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
484 struct snd_ctl_elem_info *uinfo)
486 static char *texts[] = { "Line-In", "Microphone" };
488 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
490 uinfo->value.enumerated.items = 2;
491 if (uinfo->value.enumerated.item > 1)
492 uinfo->value.enumerated.item = 1;
493 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
497 static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
498 struct snd_ctl_elem_value *ucontrol)
500 struct tas *tas = snd_kcontrol_chip(kcontrol);
502 mutex_lock(&tas->mtx);
503 ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
504 mutex_unlock(&tas->mtx);
508 static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
509 struct snd_ctl_elem_value *ucontrol)
511 struct tas *tas = snd_kcontrol_chip(kcontrol);
514 mutex_lock(&tas->mtx);
518 * Despite what the data sheet says in one place, the
519 * TAS_ACR_B_MONAUREAL bit forces mono output even when
520 * input A (line in) is selected.
522 tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL);
523 if (ucontrol->value.enumerated.item[0])
524 tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL |
525 TAS_ACR_B_MON_SEL_RIGHT;
526 if (oldacr == tas->acr) {
527 mutex_unlock(&tas->mtx);
531 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
532 mutex_unlock(&tas->mtx);
536 static struct snd_kcontrol_new capture_source_control = {
537 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
538 /* If we name this 'Input Source', it properly shows up in
539 * alsamixer as a selection, * but it's shown under the
540 * 'Playback' category.
541 * If I name it 'Capture Source', it shows up in strange
542 * ways (two bools of which one can be selected at a
543 * time) but at least it's shown in the 'Capture'
545 * I was told that this was due to backward compatibility,
546 * but I don't understand then why the mangling is *not*
547 * done when I name it "Input Source".....
549 .name = "Capture Source",
550 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
551 .info = tas_snd_capture_source_info,
552 .get = tas_snd_capture_source_get,
553 .put = tas_snd_capture_source_put,
556 static int tas_snd_treble_info(struct snd_kcontrol *kcontrol,
557 struct snd_ctl_elem_info *uinfo)
559 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
561 uinfo->value.integer.min = TAS3004_TREBLE_MIN;
562 uinfo->value.integer.max = TAS3004_TREBLE_MAX;
566 static int tas_snd_treble_get(struct snd_kcontrol *kcontrol,
567 struct snd_ctl_elem_value *ucontrol)
569 struct tas *tas = snd_kcontrol_chip(kcontrol);
571 mutex_lock(&tas->mtx);
572 ucontrol->value.integer.value[0] = tas->treble;
573 mutex_unlock(&tas->mtx);
577 static int tas_snd_treble_put(struct snd_kcontrol *kcontrol,
578 struct snd_ctl_elem_value *ucontrol)
580 struct tas *tas = snd_kcontrol_chip(kcontrol);
582 mutex_lock(&tas->mtx);
583 if (tas->treble == ucontrol->value.integer.value[0]) {
584 mutex_unlock(&tas->mtx);
588 tas->treble = ucontrol->value.integer.value[0];
591 mutex_unlock(&tas->mtx);
595 static struct snd_kcontrol_new treble_control = {
596 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
598 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
599 .info = tas_snd_treble_info,
600 .get = tas_snd_treble_get,
601 .put = tas_snd_treble_put,
604 static int tas_snd_bass_info(struct snd_kcontrol *kcontrol,
605 struct snd_ctl_elem_info *uinfo)
607 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
609 uinfo->value.integer.min = TAS3004_BASS_MIN;
610 uinfo->value.integer.max = TAS3004_BASS_MAX;
614 static int tas_snd_bass_get(struct snd_kcontrol *kcontrol,
615 struct snd_ctl_elem_value *ucontrol)
617 struct tas *tas = snd_kcontrol_chip(kcontrol);
619 mutex_lock(&tas->mtx);
620 ucontrol->value.integer.value[0] = tas->bass;
621 mutex_unlock(&tas->mtx);
625 static int tas_snd_bass_put(struct snd_kcontrol *kcontrol,
626 struct snd_ctl_elem_value *ucontrol)
628 struct tas *tas = snd_kcontrol_chip(kcontrol);
630 mutex_lock(&tas->mtx);
631 if (tas->bass == ucontrol->value.integer.value[0]) {
632 mutex_unlock(&tas->mtx);
636 tas->bass = ucontrol->value.integer.value[0];
639 mutex_unlock(&tas->mtx);
643 static struct snd_kcontrol_new bass_control = {
644 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
646 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
647 .info = tas_snd_bass_info,
648 .get = tas_snd_bass_get,
649 .put = tas_snd_bass_put,
652 static struct transfer_info tas_transfers[] = {
655 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
656 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
657 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
662 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
663 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
664 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
670 static int tas_usable(struct codec_info_item *cii,
671 struct transfer_info *ti,
672 struct transfer_info *out)
677 static int tas_reset_init(struct tas *tas)
681 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
683 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
685 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
687 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
689 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
691 tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
692 if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
695 tas->acr |= TAS_ACR_ANALOG_PDOWN;
696 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
700 if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
703 tas3004_set_drc(tas);
705 /* Set treble & bass to 0dB */
706 tas->treble = TAS3004_TREBLE_ZERO;
707 tas->bass = TAS3004_BASS_ZERO;
711 tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
712 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
720 static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
722 struct tas *tas = cii->codec_data;
725 case CLOCK_SWITCH_PREPARE_SLAVE:
726 /* Clocks are going away, mute mute mute */
727 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
730 case CLOCK_SWITCH_SLAVE:
731 /* Clocks are back, re-init the codec */
732 mutex_lock(&tas->mtx);
737 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
738 mutex_unlock(&tas->mtx);
741 /* doesn't happen as of now */
747 /* we are controlled via i2c and assume that is always up
748 * If that wasn't the case, we'd have to suspend once
749 * our i2c device is suspended, and then take note of that! */
750 static int tas_suspend(struct tas *tas)
752 mutex_lock(&tas->mtx);
754 tas->acr |= TAS_ACR_ANALOG_PDOWN;
755 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
756 mutex_unlock(&tas->mtx);
760 static int tas_resume(struct tas *tas)
763 mutex_lock(&tas->mtx);
768 mutex_unlock(&tas->mtx);
773 static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
775 return tas_suspend(cii->codec_data);
778 static int _tas_resume(struct codec_info_item *cii)
780 return tas_resume(cii->codec_data);
784 static struct codec_info tas_codec_info = {
785 .transfers = tas_transfers,
786 /* in theory, we can drive it at 512 too...
787 * but so far the framework doesn't allow
788 * for that and I don't see much point in it. */
789 .sysclock_factor = 256,
790 /* same here, could be 32 for just one 16 bit format */
792 .owner = THIS_MODULE,
793 .usable = tas_usable,
794 .switch_clock = tas_switch_clock,
796 .suspend = _tas_suspend,
797 .resume = _tas_resume,
801 static int tas_init_codec(struct aoa_codec *codec)
803 struct tas *tas = codec_to_tas(codec);
806 if (!tas->codec.gpio || !tas->codec.gpio->methods) {
807 printk(KERN_ERR PFX "gpios not assigned!!\n");
811 mutex_lock(&tas->mtx);
812 if (tas_reset_init(tas)) {
813 printk(KERN_ERR PFX "tas failed to initialise\n");
814 mutex_unlock(&tas->mtx);
818 mutex_unlock(&tas->mtx);
820 if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
822 &tas_codec_info, tas)) {
823 printk(KERN_ERR PFX "error attaching tas to soundbus\n");
827 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
828 printk(KERN_ERR PFX "failed to create tas snd device!\n");
831 err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
835 err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
839 err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
843 err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
847 err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
851 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
855 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
859 err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas));
863 err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas));
869 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
870 snd_device_free(aoa_get_card(), tas);
874 static void tas_exit_codec(struct aoa_codec *codec)
876 struct tas *tas = codec_to_tas(codec);
878 if (!tas->codec.soundbus_dev)
880 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
884 static struct i2c_driver tas_driver;
886 static int tas_create(struct i2c_adapter *adapter,
887 struct device_node *node,
892 tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
897 mutex_init(&tas->mtx);
898 tas->i2c.driver = &tas_driver;
899 tas->i2c.adapter = adapter;
900 tas->i2c.addr = addr;
901 /* seems that half is a saner default */
902 tas->drc_range = TAS3004_DRC_MAX / 2;
903 strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE-1);
905 if (i2c_attach_client(&tas->i2c)) {
906 printk(KERN_ERR PFX "failed to attach to i2c\n");
910 strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN-1);
911 tas->codec.owner = THIS_MODULE;
912 tas->codec.init = tas_init_codec;
913 tas->codec.exit = tas_exit_codec;
914 tas->codec.node = of_node_get(node);
916 if (aoa_codec_register(&tas->codec)) {
920 "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
921 addr, node->full_name);
924 i2c_detach_client(&tas->i2c);
926 mutex_destroy(&tas->mtx);
931 static int tas_i2c_attach(struct i2c_adapter *adapter)
933 struct device_node *busnode, *dev = NULL;
934 struct pmac_i2c_bus *bus;
936 bus = pmac_i2c_adapter_to_bus(adapter);
939 busnode = pmac_i2c_get_bus_node(bus);
941 while ((dev = of_get_next_child(busnode, dev)) != NULL) {
942 if (device_is_compatible(dev, "tas3004")) {
944 printk(KERN_DEBUG PFX "found tas3004\n");
945 addr = (u32 *) get_property(dev, "reg", NULL);
948 return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
950 /* older machines have no 'codec' node with a 'compatible'
951 * property that says 'tas3004', they just have a 'deq'
952 * node without any such property... */
953 if (strcmp(dev->name, "deq") == 0) {
955 printk(KERN_DEBUG PFX "found 'deq' node\n");
956 _addr = (u32 *) 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);