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 #define tas_snd_mute_info snd_ctl_boolean_stereo_info
277 static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
278 struct snd_ctl_elem_value *ucontrol)
280 struct tas *tas = snd_kcontrol_chip(kcontrol);
282 mutex_lock(&tas->mtx);
283 ucontrol->value.integer.value[0] = !tas->mute_l;
284 ucontrol->value.integer.value[1] = !tas->mute_r;
285 mutex_unlock(&tas->mtx);
289 static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_value *ucontrol)
292 struct tas *tas = snd_kcontrol_chip(kcontrol);
294 mutex_lock(&tas->mtx);
295 if (tas->mute_l == !ucontrol->value.integer.value[0]
296 && tas->mute_r == !ucontrol->value.integer.value[1]) {
297 mutex_unlock(&tas->mtx);
301 tas->mute_l = !ucontrol->value.integer.value[0];
302 tas->mute_r = !ucontrol->value.integer.value[1];
305 mutex_unlock(&tas->mtx);
309 static struct snd_kcontrol_new mute_control = {
310 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
311 .name = "Master Playback Switch",
312 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
313 .info = tas_snd_mute_info,
314 .get = tas_snd_mute_get,
315 .put = tas_snd_mute_put,
318 static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
319 struct snd_ctl_elem_info *uinfo)
321 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
323 uinfo->value.integer.min = 0;
324 uinfo->value.integer.max = 177;
328 static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
329 struct snd_ctl_elem_value *ucontrol)
331 struct tas *tas = snd_kcontrol_chip(kcontrol);
332 int idx = kcontrol->private_value;
334 mutex_lock(&tas->mtx);
335 ucontrol->value.integer.value[0] = tas->mixer_l[idx];
336 ucontrol->value.integer.value[1] = tas->mixer_r[idx];
337 mutex_unlock(&tas->mtx);
342 static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
343 struct snd_ctl_elem_value *ucontrol)
345 struct tas *tas = snd_kcontrol_chip(kcontrol);
346 int idx = kcontrol->private_value;
348 mutex_lock(&tas->mtx);
349 if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
350 && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) {
351 mutex_unlock(&tas->mtx);
355 tas->mixer_l[idx] = ucontrol->value.integer.value[0];
356 tas->mixer_r[idx] = ucontrol->value.integer.value[1];
360 mutex_unlock(&tas->mtx);
364 #define MIXER_CONTROL(n,descr,idx) \
365 static struct snd_kcontrol_new n##_control = { \
366 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
367 .name = descr " Playback Volume", \
368 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
369 .info = tas_snd_mixer_info, \
370 .get = tas_snd_mixer_get, \
371 .put = tas_snd_mixer_put, \
372 .private_value = idx, \
375 MIXER_CONTROL(pcm1, "PCM", 0);
376 MIXER_CONTROL(monitor, "Monitor", 2);
378 static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
379 struct snd_ctl_elem_info *uinfo)
381 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
383 uinfo->value.integer.min = 0;
384 uinfo->value.integer.max = TAS3004_DRC_MAX;
388 static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
389 struct snd_ctl_elem_value *ucontrol)
391 struct tas *tas = snd_kcontrol_chip(kcontrol);
393 mutex_lock(&tas->mtx);
394 ucontrol->value.integer.value[0] = tas->drc_range;
395 mutex_unlock(&tas->mtx);
399 static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
400 struct snd_ctl_elem_value *ucontrol)
402 struct tas *tas = snd_kcontrol_chip(kcontrol);
404 mutex_lock(&tas->mtx);
405 if (tas->drc_range == ucontrol->value.integer.value[0]) {
406 mutex_unlock(&tas->mtx);
410 tas->drc_range = ucontrol->value.integer.value[0];
412 tas3004_set_drc(tas);
413 mutex_unlock(&tas->mtx);
417 static struct snd_kcontrol_new drc_range_control = {
418 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
420 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
421 .info = tas_snd_drc_range_info,
422 .get = tas_snd_drc_range_get,
423 .put = tas_snd_drc_range_put,
426 #define tas_snd_drc_switch_info snd_ctl_boolean_mono_info
428 static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
429 struct snd_ctl_elem_value *ucontrol)
431 struct tas *tas = snd_kcontrol_chip(kcontrol);
433 mutex_lock(&tas->mtx);
434 ucontrol->value.integer.value[0] = tas->drc_enabled;
435 mutex_unlock(&tas->mtx);
439 static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
440 struct snd_ctl_elem_value *ucontrol)
442 struct tas *tas = snd_kcontrol_chip(kcontrol);
444 mutex_lock(&tas->mtx);
445 if (tas->drc_enabled == ucontrol->value.integer.value[0]) {
446 mutex_unlock(&tas->mtx);
450 tas->drc_enabled = ucontrol->value.integer.value[0];
452 tas3004_set_drc(tas);
453 mutex_unlock(&tas->mtx);
457 static struct snd_kcontrol_new drc_switch_control = {
458 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
459 .name = "DRC Range Switch",
460 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
461 .info = tas_snd_drc_switch_info,
462 .get = tas_snd_drc_switch_get,
463 .put = tas_snd_drc_switch_put,
466 static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
467 struct snd_ctl_elem_info *uinfo)
469 static char *texts[] = { "Line-In", "Microphone" };
471 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
473 uinfo->value.enumerated.items = 2;
474 if (uinfo->value.enumerated.item > 1)
475 uinfo->value.enumerated.item = 1;
476 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
480 static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
481 struct snd_ctl_elem_value *ucontrol)
483 struct tas *tas = snd_kcontrol_chip(kcontrol);
485 mutex_lock(&tas->mtx);
486 ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
487 mutex_unlock(&tas->mtx);
491 static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol)
494 struct tas *tas = snd_kcontrol_chip(kcontrol);
497 mutex_lock(&tas->mtx);
501 * Despite what the data sheet says in one place, the
502 * TAS_ACR_B_MONAUREAL bit forces mono output even when
503 * input A (line in) is selected.
505 tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL);
506 if (ucontrol->value.enumerated.item[0])
507 tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL |
508 TAS_ACR_B_MON_SEL_RIGHT;
509 if (oldacr == tas->acr) {
510 mutex_unlock(&tas->mtx);
514 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
515 mutex_unlock(&tas->mtx);
519 static struct snd_kcontrol_new capture_source_control = {
520 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
521 /* If we name this 'Input Source', it properly shows up in
522 * alsamixer as a selection, * but it's shown under the
523 * 'Playback' category.
524 * If I name it 'Capture Source', it shows up in strange
525 * ways (two bools of which one can be selected at a
526 * time) but at least it's shown in the 'Capture'
528 * I was told that this was due to backward compatibility,
529 * but I don't understand then why the mangling is *not*
530 * done when I name it "Input Source".....
532 .name = "Capture Source",
533 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
534 .info = tas_snd_capture_source_info,
535 .get = tas_snd_capture_source_get,
536 .put = tas_snd_capture_source_put,
539 static int tas_snd_treble_info(struct snd_kcontrol *kcontrol,
540 struct snd_ctl_elem_info *uinfo)
542 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
544 uinfo->value.integer.min = TAS3004_TREBLE_MIN;
545 uinfo->value.integer.max = TAS3004_TREBLE_MAX;
549 static int tas_snd_treble_get(struct snd_kcontrol *kcontrol,
550 struct snd_ctl_elem_value *ucontrol)
552 struct tas *tas = snd_kcontrol_chip(kcontrol);
554 mutex_lock(&tas->mtx);
555 ucontrol->value.integer.value[0] = tas->treble;
556 mutex_unlock(&tas->mtx);
560 static int tas_snd_treble_put(struct snd_kcontrol *kcontrol,
561 struct snd_ctl_elem_value *ucontrol)
563 struct tas *tas = snd_kcontrol_chip(kcontrol);
565 mutex_lock(&tas->mtx);
566 if (tas->treble == ucontrol->value.integer.value[0]) {
567 mutex_unlock(&tas->mtx);
571 tas->treble = ucontrol->value.integer.value[0];
574 mutex_unlock(&tas->mtx);
578 static struct snd_kcontrol_new treble_control = {
579 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
581 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
582 .info = tas_snd_treble_info,
583 .get = tas_snd_treble_get,
584 .put = tas_snd_treble_put,
587 static int tas_snd_bass_info(struct snd_kcontrol *kcontrol,
588 struct snd_ctl_elem_info *uinfo)
590 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
592 uinfo->value.integer.min = TAS3004_BASS_MIN;
593 uinfo->value.integer.max = TAS3004_BASS_MAX;
597 static int tas_snd_bass_get(struct snd_kcontrol *kcontrol,
598 struct snd_ctl_elem_value *ucontrol)
600 struct tas *tas = snd_kcontrol_chip(kcontrol);
602 mutex_lock(&tas->mtx);
603 ucontrol->value.integer.value[0] = tas->bass;
604 mutex_unlock(&tas->mtx);
608 static int tas_snd_bass_put(struct snd_kcontrol *kcontrol,
609 struct snd_ctl_elem_value *ucontrol)
611 struct tas *tas = snd_kcontrol_chip(kcontrol);
613 mutex_lock(&tas->mtx);
614 if (tas->bass == ucontrol->value.integer.value[0]) {
615 mutex_unlock(&tas->mtx);
619 tas->bass = ucontrol->value.integer.value[0];
622 mutex_unlock(&tas->mtx);
626 static struct snd_kcontrol_new bass_control = {
627 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
629 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
630 .info = tas_snd_bass_info,
631 .get = tas_snd_bass_get,
632 .put = tas_snd_bass_put,
635 static struct transfer_info tas_transfers[] = {
638 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
639 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
640 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
645 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
646 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
647 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
653 static int tas_usable(struct codec_info_item *cii,
654 struct transfer_info *ti,
655 struct transfer_info *out)
660 static int tas_reset_init(struct tas *tas)
664 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
666 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
668 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
670 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
672 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
674 tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
675 if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
678 tas->acr |= TAS_ACR_ANALOG_PDOWN;
679 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
683 if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
686 tas3004_set_drc(tas);
688 /* Set treble & bass to 0dB */
689 tas->treble = TAS3004_TREBLE_ZERO;
690 tas->bass = TAS3004_BASS_ZERO;
694 tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
695 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
703 static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
705 struct tas *tas = cii->codec_data;
708 case CLOCK_SWITCH_PREPARE_SLAVE:
709 /* Clocks are going away, mute mute mute */
710 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
713 case CLOCK_SWITCH_SLAVE:
714 /* Clocks are back, re-init the codec */
715 mutex_lock(&tas->mtx);
720 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
721 mutex_unlock(&tas->mtx);
724 /* doesn't happen as of now */
731 /* we are controlled via i2c and assume that is always up
732 * If that wasn't the case, we'd have to suspend once
733 * our i2c device is suspended, and then take note of that! */
734 static int tas_suspend(struct tas *tas)
736 mutex_lock(&tas->mtx);
738 tas->acr |= TAS_ACR_ANALOG_PDOWN;
739 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
740 mutex_unlock(&tas->mtx);
744 static int tas_resume(struct tas *tas)
747 mutex_lock(&tas->mtx);
752 mutex_unlock(&tas->mtx);
756 static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
758 return tas_suspend(cii->codec_data);
761 static int _tas_resume(struct codec_info_item *cii)
763 return tas_resume(cii->codec_data);
765 #else /* CONFIG_PM */
766 #define _tas_suspend NULL
767 #define _tas_resume NULL
768 #endif /* CONFIG_PM */
770 static struct codec_info tas_codec_info = {
771 .transfers = tas_transfers,
772 /* in theory, we can drive it at 512 too...
773 * but so far the framework doesn't allow
774 * for that and I don't see much point in it. */
775 .sysclock_factor = 256,
776 /* same here, could be 32 for just one 16 bit format */
778 .owner = THIS_MODULE,
779 .usable = tas_usable,
780 .switch_clock = tas_switch_clock,
781 .suspend = _tas_suspend,
782 .resume = _tas_resume,
785 static int tas_init_codec(struct aoa_codec *codec)
787 struct tas *tas = codec_to_tas(codec);
790 if (!tas->codec.gpio || !tas->codec.gpio->methods) {
791 printk(KERN_ERR PFX "gpios not assigned!!\n");
795 mutex_lock(&tas->mtx);
796 if (tas_reset_init(tas)) {
797 printk(KERN_ERR PFX "tas failed to initialise\n");
798 mutex_unlock(&tas->mtx);
802 mutex_unlock(&tas->mtx);
804 if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
806 &tas_codec_info, tas)) {
807 printk(KERN_ERR PFX "error attaching tas to soundbus\n");
811 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
812 printk(KERN_ERR PFX "failed to create tas snd device!\n");
815 err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
819 err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
823 err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
827 err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
831 err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
835 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
839 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
843 err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas));
847 err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas));
853 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
854 snd_device_free(aoa_get_card(), tas);
858 static void tas_exit_codec(struct aoa_codec *codec)
860 struct tas *tas = codec_to_tas(codec);
862 if (!tas->codec.soundbus_dev)
864 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
868 static struct i2c_driver tas_driver;
870 static int tas_create(struct i2c_adapter *adapter,
871 struct device_node *node,
876 tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
881 mutex_init(&tas->mtx);
882 tas->i2c.driver = &tas_driver;
883 tas->i2c.adapter = adapter;
884 tas->i2c.addr = addr;
885 /* seems that half is a saner default */
886 tas->drc_range = TAS3004_DRC_MAX / 2;
887 strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE);
889 if (i2c_attach_client(&tas->i2c)) {
890 printk(KERN_ERR PFX "failed to attach to i2c\n");
894 strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN);
895 tas->codec.owner = THIS_MODULE;
896 tas->codec.init = tas_init_codec;
897 tas->codec.exit = tas_exit_codec;
898 tas->codec.node = of_node_get(node);
900 if (aoa_codec_register(&tas->codec)) {
904 "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
905 addr, node->full_name);
908 i2c_detach_client(&tas->i2c);
910 mutex_destroy(&tas->mtx);
915 static int tas_i2c_attach(struct i2c_adapter *adapter)
917 struct device_node *busnode, *dev = NULL;
918 struct pmac_i2c_bus *bus;
920 bus = pmac_i2c_adapter_to_bus(adapter);
923 busnode = pmac_i2c_get_bus_node(bus);
925 while ((dev = of_get_next_child(busnode, dev)) != NULL) {
926 if (of_device_is_compatible(dev, "tas3004")) {
928 printk(KERN_DEBUG PFX "found tas3004\n");
929 addr = of_get_property(dev, "reg", NULL);
932 return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
934 /* older machines have no 'codec' node with a 'compatible'
935 * property that says 'tas3004', they just have a 'deq'
936 * node without any such property... */
937 if (strcmp(dev->name, "deq") == 0) {
940 printk(KERN_DEBUG PFX "found 'deq' node\n");
941 _addr = of_get_property(dev, "i2c-address", NULL);
944 addr = ((*_addr) >> 1) & 0x7f;
945 /* now, if the address doesn't match any of the two
946 * that a tas3004 can have, we cannot handle this.
947 * I doubt it ever happens but hey. */
948 if (addr != 0x34 && addr != 0x35)
950 return tas_create(adapter, dev, addr);
956 static int tas_i2c_detach(struct i2c_client *client)
958 struct tas *tas = container_of(client, struct tas, i2c);
960 u8 tmp = TAS_ACR_ANALOG_PDOWN;
962 if ((err = i2c_detach_client(client)))
964 aoa_codec_unregister(&tas->codec);
965 of_node_put(tas->codec.node);
967 /* power down codec chip */
968 tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);
970 mutex_destroy(&tas->mtx);
975 static struct i2c_driver tas_driver = {
977 .name = "aoa_codec_tas",
978 .owner = THIS_MODULE,
980 .attach_adapter = tas_i2c_attach,
981 .detach_client = tas_i2c_detach,
984 static int __init tas_init(void)
986 return i2c_add_driver(&tas_driver);
989 static void __exit tas_exit(void)
991 i2c_del_driver(&tas_driver);
994 module_init(tas_init);
995 module_exit(tas_exit);