snd-aoa-codec-tas.c 25.1 KB
Newer Older
J
Johannes Berg 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68
/*
 * Apple Onboard Audio driver for tas codec
 *
 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
 *
 * GPL v2, can be found in COPYING.
 *
 * Open questions:
 *  - How to distinguish between 3004 and versions?
 *
 * FIXMEs:
 *  - This codec driver doesn't honour the 'connected'
 *    property of the aoa_codec struct, hence if
 *    it is used in machines where not everything is
 *    connected it will display wrong mixer elements.
 *  - Driver assumes that the microphone is always
 *    monaureal and connected to the right channel of
 *    the input. This should also be a codec-dependent
 *    flag, maybe the codec should have 3 different
 *    bits for the three different possibilities how
 *    it can be hooked up...
 *    But as long as I don't see any hardware hooked
 *    up that way...
 *  - As Apple notes in their code, the tas3004 seems
 *    to delay the right channel by one sample. You can
 *    see this when for example recording stereo in
 *    audacity, or recording the tas output via cable
 *    on another machine (use a sinus generator or so).
 *    I tried programming the BiQuads but couldn't
 *    make the delay work, maybe someone can read the
 *    datasheet and fix it. The relevant Apple comment
 *    is in AppleTAS3004Audio.cpp lines 1637 ff. Note
 *    that their comment describing how they program
 *    the filters sucks...
 *
 * Other things:
 *  - this should actually register *two* aoa_codec
 *    structs since it has two inputs. Then it must
 *    use the prepare callback to forbid running the
 *    secondary output on a different clock.
 *    Also, whatever bus knows how to do this must
 *    provide two soundbus_dev devices and the fabric
 *    must be able to link them correctly.
 *
 *    I don't even know if Apple ever uses the second
 *    port on the tas3004 though, I don't think their
 *    i2s controllers can even do it. OTOH, they all
 *    derive the clocks from common clocks, so it
 *    might just be possible. The framework allows the
 *    codec to refine the transfer_info items in the
 *    usable callback, so we can simply remove the
 *    rates the second instance is not using when it
 *    actually is in use.
 *    Maybe we'll need to make the sound busses have
 *    a 'clock group id' value so the codec can
 *    determine if the two outputs can be driven at
 *    the same time. But that is likely overkill, up
 *    to the fabric to not link them up incorrectly,
 *    and up to the hardware designer to not wire
 *    them up in some weird unusable way.
 */
#include <stddef.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <asm/pmac_low_i2c.h>
#include <asm/prom.h>
#include <linux/delay.h>
#include <linux/module.h>
69 70
#include <linux/mutex.h>

J
Johannes Berg 已提交
71 72 73 74 75 76
MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("tas codec driver for snd-aoa");

#include "snd-aoa-codec-tas.h"
#include "snd-aoa-codec-tas-gain-table.h"
77
#include "snd-aoa-codec-tas-basstreble.h"
J
Johannes Berg 已提交
78 79 80 81 82
#include "../aoa.h"
#include "../soundbus/soundbus.h"

#define PFX "snd-aoa-codec-tas: "

83

J
Johannes Berg 已提交
84 85 86
struct tas {
	struct aoa_codec	codec;
	struct i2c_client	i2c;
87 88 89 90
	u32			mute_l:1, mute_r:1 ,
				controls_created:1 ,
				drc_enabled:1,
				hw_enabled:1;
J
Johannes Berg 已提交
91 92
	u8			cached_volume_l, cached_volume_r;
	u8			mixer_l[3], mixer_r[3];
93
	u8			bass, treble;
J
Johannes Berg 已提交
94
	u8			acr;
95
	int			drc_range;
96 97 98 99
	/* protects hardware access against concurrency from
	 * userspace when hitting controls and during
	 * codec init/suspend/resume */
	struct mutex		mtx;
J
Johannes Berg 已提交
100 101
};

102 103
static int tas_reset_init(struct tas *tas);

J
Johannes Berg 已提交
104 105 106 107 108 109 110 111 112 113 114 115 116
static struct tas *codec_to_tas(struct aoa_codec *codec)
{
	return container_of(codec, struct tas, codec);
}

static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
{
	if (len == 1)
		return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
	else
		return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
}

117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
static void tas3004_set_drc(struct tas *tas)
{
	unsigned char val[6];

	if (tas->drc_enabled)
		val[0] = 0x50; /* 3:1 above threshold */
	else
		val[0] = 0x51; /* disabled */
	val[1] = 0x02; /* 1:1 below threshold */
	if (tas->drc_range > 0xef)
		val[2] = 0xef;
	else if (tas->drc_range < 0)
		val[2] = 0x00;
	else
		val[2] = tas->drc_range;
	val[3] = 0xb0;
	val[4] = 0x60;
	val[5] = 0xa0;

	tas_write_reg(tas, TAS_REG_DRC, 6, val);
}

139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
static void tas_set_treble(struct tas *tas)
{
	u8 tmp;

	tmp = tas3004_treble(tas->treble);
	tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp);
}

static void tas_set_bass(struct tas *tas)
{
	u8 tmp;

	tmp = tas3004_bass(tas->bass);
	tas_write_reg(tas, TAS_REG_BASS, 1, &tmp);
}

J
Johannes Berg 已提交
155 156 157 158 159 160 161 162 163 164 165 166
static void tas_set_volume(struct tas *tas)
{
	u8 block[6];
	int tmp;
	u8 left, right;

	left = tas->cached_volume_l;
	right = tas->cached_volume_r;

	if (left > 177) left = 177;
	if (right > 177) right = 177;

167 168
	if (tas->mute_l) left = 0;
	if (tas->mute_r) right = 0;
J
Johannes Berg 已提交
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

	/* analysing the volume and mixer tables shows
	 * that they are similar enough when we shift
	 * the mixer table down by 4 bits. The error
	 * is miniscule, in just one item the error
	 * is 1, at a value of 0x07f17b (mixer table
	 * value is 0x07f17a) */
	tmp = tas_gaintable[left];
	block[0] = tmp>>20;
	block[1] = tmp>>12;
	block[2] = tmp>>4;
	tmp = tas_gaintable[right];
	block[3] = tmp>>20;
	block[4] = tmp>>12;
	block[5] = tmp>>4;
	tas_write_reg(tas, TAS_REG_VOL, 6, block);
}

static void tas_set_mixer(struct tas *tas)
{
	u8 block[9];
	int tmp, i;
	u8 val;

	for (i=0;i<3;i++) {
		val = tas->mixer_l[i];
		if (val > 177) val = 177;
		tmp = tas_gaintable[val];
		block[3*i+0] = tmp>>16;
		block[3*i+1] = tmp>>8;
		block[3*i+2] = tmp;
	}
	tas_write_reg(tas, TAS_REG_LMIX, 9, block);

	for (i=0;i<3;i++) {
		val = tas->mixer_r[i];
		if (val > 177) val = 177;
		tmp = tas_gaintable[val];
		block[3*i+0] = tmp>>16;
		block[3*i+1] = tmp>>8;
		block[3*i+2] = tmp;
	}
	tas_write_reg(tas, TAS_REG_RMIX, 9, block);
}

/* alsa stuff */

static int tas_dev_register(struct snd_device *dev)
{
	return 0;
}

static struct snd_device_ops ops = {
	.dev_register = tas_dev_register,
};

static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 177;
	return 0;
}

static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

240
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
241 242
	ucontrol->value.integer.value[0] = tas->cached_volume_l;
	ucontrol->value.integer.value[1] = tas->cached_volume_r;
243
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
244 245 246 247 248 249 250 251
	return 0;
}

static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

252
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
253
	if (tas->cached_volume_l == ucontrol->value.integer.value[0]
254 255
	 && tas->cached_volume_r == ucontrol->value.integer.value[1]) {
		mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
256
		return 0;
257
	}
J
Johannes Berg 已提交
258 259 260

	tas->cached_volume_l = ucontrol->value.integer.value[0];
	tas->cached_volume_r = ucontrol->value.integer.value[1];
261 262
	if (tas->hw_enabled)
		tas_set_volume(tas);
263
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290
	return 1;
}

static struct snd_kcontrol_new volume_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Master Playback Volume",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_vol_info,
	.get = tas_snd_vol_get,
	.put = tas_snd_vol_put,
};

static int tas_snd_mute_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

291
	mutex_lock(&tas->mtx);
292 293
	ucontrol->value.integer.value[0] = !tas->mute_l;
	ucontrol->value.integer.value[1] = !tas->mute_r;
294
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
295 296 297 298 299 300 301 302
	return 0;
}

static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

303
	mutex_lock(&tas->mtx);
304
	if (tas->mute_l == !ucontrol->value.integer.value[0]
305 306
	 && tas->mute_r == !ucontrol->value.integer.value[1]) {
		mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
307
		return 0;
308
	}
J
Johannes Berg 已提交
309

310 311 312 313
	tas->mute_l = !ucontrol->value.integer.value[0];
	tas->mute_r = !ucontrol->value.integer.value[1];
	if (tas->hw_enabled)
		tas_set_volume(tas);
314
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
	return 1;
}

static struct snd_kcontrol_new mute_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Master Playback Switch",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_mute_info,
	.get = tas_snd_mute_get,
	.put = tas_snd_mute_put,
};

static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 177;
	return 0;
}

static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);
	int idx = kcontrol->private_value;

343
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
344 345
	ucontrol->value.integer.value[0] = tas->mixer_l[idx];
	ucontrol->value.integer.value[1] = tas->mixer_r[idx];
346
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
347 348 349 350 351 352 353 354 355 356

	return 0;
}

static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);
	int idx = kcontrol->private_value;

357
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
358
	if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
359 360
	 && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) {
		mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
361
		return 0;
362
	}
J
Johannes Berg 已提交
363 364 365 366

	tas->mixer_l[idx] = ucontrol->value.integer.value[0];
	tas->mixer_r[idx] = ucontrol->value.integer.value[1];

367 368
	if (tas->hw_enabled)
		tas_set_mixer(tas);
369
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
370 371 372 373 374 375 376 377 378 379 380 381 382 383
	return 1;
}

#define MIXER_CONTROL(n,descr,idx)			\
static struct snd_kcontrol_new n##_control = {		\
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,		\
	.name = descr " Playback Volume",		\
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,	\
	.info = tas_snd_mixer_info,			\
	.get = tas_snd_mixer_get,			\
	.put = tas_snd_mixer_put,			\
	.private_value = idx,				\
}

384
MIXER_CONTROL(pcm1, "PCM", 0);
J
Johannes Berg 已提交
385 386
MIXER_CONTROL(monitor, "Monitor", 2);

387 388 389 390 391 392 393 394 395 396 397 398 399 400 401
static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = TAS3004_DRC_MAX;
	return 0;
}

static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	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);
405 406 407 408 409 410 411 412
	return 0;
}

static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

413 414 415
	mutex_lock(&tas->mtx);
	if (tas->drc_range == ucontrol->value.integer.value[0]) {
		mutex_unlock(&tas->mtx);
416
		return 0;
417
	}
418 419 420 421

	tas->drc_range = ucontrol->value.integer.value[0];
	if (tas->hw_enabled)
		tas3004_set_drc(tas);
422
	mutex_unlock(&tas->mtx);
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
	return 1;
}

static struct snd_kcontrol_new drc_range_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DRC Range",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_drc_range_info,
	.get = tas_snd_drc_range_get,
	.put = tas_snd_drc_range_put,
};

static int tas_snd_drc_switch_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	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);
453 454 455 456 457 458 459 460
	return 0;
}

static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

461 462 463
	mutex_lock(&tas->mtx);
	if (tas->drc_enabled == ucontrol->value.integer.value[0]) {
		mutex_unlock(&tas->mtx);
464
		return 0;
465
	}
466 467 468 469

	tas->drc_enabled = ucontrol->value.integer.value[0];
	if (tas->hw_enabled)
		tas3004_set_drc(tas);
470
	mutex_unlock(&tas->mtx);
471 472 473 474 475 476 477 478 479 480 481 482
	return 1;
}

static struct snd_kcontrol_new drc_switch_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DRC Range Switch",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_drc_switch_info,
	.get = tas_snd_drc_switch_get,
	.put = tas_snd_drc_switch_put,
};

J
Johannes Berg 已提交
483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	static char *texts[] = { "Line-In", "Microphone" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

502
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
503
	ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
504
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
505 506 507 508 509 510 511
	return 0;
}

static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);
512 513 514 515
	int oldacr;

	mutex_lock(&tas->mtx);
	oldacr = tas->acr;
J
Johannes Berg 已提交
516 517 518 519

	tas->acr &= ~TAS_ACR_INPUT_B;
	if (ucontrol->value.enumerated.item[0])
		tas->acr |= TAS_ACR_INPUT_B;
520 521
	if (oldacr == tas->acr) {
		mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
522
		return 0;
523
	}
524 525
	if (tas->hw_enabled)
		tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
526
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549
	return 1;
}

static struct snd_kcontrol_new capture_source_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	/* If we name this 'Input Source', it properly shows up in
	 * alsamixer as a selection, * but it's shown under the
	 * 'Playback' category.
	 * If I name it 'Capture Source', it shows up in strange
	 * ways (two bools of which one can be selected at a
	 * time) but at least it's shown in the 'Capture'
	 * category.
	 * I was told that this was due to backward compatibility,
	 * but I don't understand then why the mangling is *not*
	 * done when I name it "Input Source".....
	 */
	.name = "Capture Source",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_capture_source_info,
	.get = tas_snd_capture_source_get,
	.put = tas_snd_capture_source_put,
};

550 551 552 553 554 555 556 557 558 559 560 561 562 563 564
static int tas_snd_treble_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = TAS3004_TREBLE_MIN;
	uinfo->value.integer.max = TAS3004_TREBLE_MAX;
	return 0;
}

static int tas_snd_treble_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

565
	mutex_lock(&tas->mtx);
566
	ucontrol->value.integer.value[0] = tas->treble;
567
	mutex_unlock(&tas->mtx);
568 569 570 571 572 573 574 575
	return 0;
}

static int tas_snd_treble_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

576 577 578
	mutex_lock(&tas->mtx);
	if (tas->treble == ucontrol->value.integer.value[0]) {
		mutex_unlock(&tas->mtx);
579
		return 0;
580
	}
581 582 583 584

	tas->treble = ucontrol->value.integer.value[0];
	if (tas->hw_enabled)
		tas_set_treble(tas);
585
	mutex_unlock(&tas->mtx);
586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612
	return 1;
}

static struct snd_kcontrol_new treble_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Treble",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_treble_info,
	.get = tas_snd_treble_get,
	.put = tas_snd_treble_put,
};

static int tas_snd_bass_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = TAS3004_BASS_MIN;
	uinfo->value.integer.max = TAS3004_BASS_MAX;
	return 0;
}

static int tas_snd_bass_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

613
	mutex_lock(&tas->mtx);
614
	ucontrol->value.integer.value[0] = tas->bass;
615
	mutex_unlock(&tas->mtx);
616 617 618 619 620 621 622 623
	return 0;
}

static int tas_snd_bass_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct tas *tas = snd_kcontrol_chip(kcontrol);

624 625 626
	mutex_lock(&tas->mtx);
	if (tas->bass == ucontrol->value.integer.value[0]) {
		mutex_unlock(&tas->mtx);
627
		return 0;
628
	}
629 630 631 632

	tas->bass = ucontrol->value.integer.value[0];
	if (tas->hw_enabled)
		tas_set_bass(tas);
633
	mutex_unlock(&tas->mtx);
634 635 636 637 638 639 640 641 642 643 644
	return 1;
}

static struct snd_kcontrol_new bass_control = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Bass",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = tas_snd_bass_info,
	.get = tas_snd_bass_get,
	.put = tas_snd_bass_put,
};
J
Johannes Berg 已提交
645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673

static struct transfer_info tas_transfers[] = {
	{
		/* input */
		.formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
			   SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
		.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
		.transfer_in = 1,
	},
	{
		/* output */
		.formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
			   SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
		.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
		.transfer_in = 0,
	},
	{}
};

static int tas_usable(struct codec_info_item *cii,
		      struct transfer_info *ti,
		      struct transfer_info *out)
{
	return 1;
}

static int tas_reset_init(struct tas *tas)
{
	u8 tmp;
674 675 676

	tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
	msleep(5);
J
Johannes Berg 已提交
677
	tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
678
	msleep(5);
J
Johannes Berg 已提交
679
	tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
680
	msleep(20);
J
Johannes Berg 已提交
681
	tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
682 683
	msleep(10);
	tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
J
Johannes Berg 已提交
684 685 686

	tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
	if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
687
		goto outerr;
J
Johannes Berg 已提交
688

689 690 691
	tas->acr |= TAS_ACR_ANALOG_PDOWN | TAS_ACR_B_MONAUREAL |
		TAS_ACR_B_MON_SEL_RIGHT;
	if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
692
		goto outerr;
693

J
Johannes Berg 已提交
694 695
	tmp = 0;
	if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
696
		goto outerr;
J
Johannes Berg 已提交
697

698 699 700
	tas3004_set_drc(tas);

	/* Set treble & bass to 0dB */
701 702 703 704
	tas->treble = TAS3004_TREBLE_ZERO;
	tas->bass = TAS3004_BASS_ZERO;
	tas_set_treble(tas);
	tas_set_bass(tas);
705 706 707

	tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
	if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
708
		goto outerr;
709 710

	return 0;
711 712
 outerr:
	return -ENODEV;
713 714 715 716 717 718 719 720 721 722 723 724 725 726
}

static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock)
{
	struct tas *tas = cii->codec_data;

	switch(clock) {
	case CLOCK_SWITCH_PREPARE_SLAVE:
		/* Clocks are going away, mute mute mute */
		tas->codec.gpio->methods->all_amps_off(tas->codec.gpio);
		tas->hw_enabled = 0;
		break;
	case CLOCK_SWITCH_SLAVE:
		/* Clocks are back, re-init the codec */
727
		mutex_lock(&tas->mtx);
728 729 730 731 732
		tas_reset_init(tas);
		tas_set_volume(tas);
		tas_set_mixer(tas);
		tas->hw_enabled = 1;
		tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio);
733
		mutex_unlock(&tas->mtx);
734 735 736 737 738
		break;
	default:
		/* doesn't happen as of now */
		return -EINVAL;
	}
J
Johannes Berg 已提交
739 740 741 742 743 744 745 746
	return 0;
}

/* we are controlled via i2c and assume that is always up
 * If that wasn't the case, we'd have to suspend once
 * our i2c device is suspended, and then take note of that! */
static int tas_suspend(struct tas *tas)
{
747
	mutex_lock(&tas->mtx);
748
	tas->hw_enabled = 0;
J
Johannes Berg 已提交
749 750
	tas->acr |= TAS_ACR_ANALOG_PDOWN;
	tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
751
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
752 753 754 755 756 757
	return 0;
}

static int tas_resume(struct tas *tas)
{
	/* reset codec */
758
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
759 760 761
	tas_reset_init(tas);
	tas_set_volume(tas);
	tas_set_mixer(tas);
762
	tas->hw_enabled = 1;
763
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788
	return 0;
}

#ifdef CONFIG_PM
static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
{
	return tas_suspend(cii->codec_data);
}

static int _tas_resume(struct codec_info_item *cii)
{
	return tas_resume(cii->codec_data);
}
#endif

static struct codec_info tas_codec_info = {
	.transfers = tas_transfers,
	/* in theory, we can drive it at 512 too...
	 * but so far the framework doesn't allow
	 * for that and I don't see much point in it. */
	.sysclock_factor = 256,
	/* same here, could be 32 for just one 16 bit format */
	.bus_factor = 64,
	.owner = THIS_MODULE,
	.usable = tas_usable,
789
	.switch_clock = tas_switch_clock,
J
Johannes Berg 已提交
790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
#ifdef CONFIG_PM
	.suspend = _tas_suspend,
	.resume = _tas_resume,
#endif
};

static int tas_init_codec(struct aoa_codec *codec)
{
	struct tas *tas = codec_to_tas(codec);
	int err;

	if (!tas->codec.gpio || !tas->codec.gpio->methods) {
		printk(KERN_ERR PFX "gpios not assigned!!\n");
		return -EINVAL;
	}

806
	mutex_lock(&tas->mtx);
J
Johannes Berg 已提交
807 808
	if (tas_reset_init(tas)) {
		printk(KERN_ERR PFX "tas failed to initialise\n");
809
		mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
810 811
		return -ENXIO;
	}
812
	tas->hw_enabled = 1;
813
	mutex_unlock(&tas->mtx);
J
Johannes Berg 已提交
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845

	if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
						   aoa_get_card(),
						   &tas_codec_info, tas)) {
		printk(KERN_ERR PFX "error attaching tas to soundbus\n");
		return -ENODEV;
	}

	if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
		printk(KERN_ERR PFX "failed to create tas snd device!\n");
		return -ENODEV;
	}
	err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
	if (err)
		goto error;

846 847 848 849 850 851 852 853
	err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas));
	if (err)
		goto error;

854 855 856 857 858 859 860 861
	err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas));
	if (err)
		goto error;

	err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas));
	if (err)
		goto error;

J
Johannes Berg 已提交
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
	return 0;
 error:
	tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
	snd_device_free(aoa_get_card(), tas);
	return err;
}

static void tas_exit_codec(struct aoa_codec *codec)
{
	struct tas *tas = codec_to_tas(codec);

	if (!tas->codec.soundbus_dev)
		return;
	tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
}
	

static struct i2c_driver tas_driver;

static int tas_create(struct i2c_adapter *adapter,
		       struct device_node *node,
		       int addr)
{
	struct tas *tas;

	tas = kzalloc(sizeof(struct tas), GFP_KERNEL);

	if (!tas)
		return -ENOMEM;

892
	mutex_init(&tas->mtx);
J
Johannes Berg 已提交
893 894 895
	tas->i2c.driver = &tas_driver;
	tas->i2c.adapter = adapter;
	tas->i2c.addr = addr;
896 897
	/* seems that half is a saner default */
	tas->drc_range = TAS3004_DRC_MAX / 2;
J
Johannes Berg 已提交
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913
	strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE-1);

	if (i2c_attach_client(&tas->i2c)) {
		printk(KERN_ERR PFX "failed to attach to i2c\n");
		goto fail;
	}

	strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN-1);
	tas->codec.owner = THIS_MODULE;
	tas->codec.init = tas_init_codec;
	tas->codec.exit = tas_exit_codec;
	tas->codec.node = of_node_get(node);

	if (aoa_codec_register(&tas->codec)) {
		goto detach;
	}
914 915 916
	printk(KERN_DEBUG
	       "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n",
	       addr, node->full_name);
J
Johannes Berg 已提交
917 918 919 920
	return 0;
 detach:
	i2c_detach_client(&tas->i2c);
 fail:
921
	mutex_destroy(&tas->mtx);
J
Johannes Berg 已提交
922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
	kfree(tas);
	return -EINVAL;
}

static int tas_i2c_attach(struct i2c_adapter *adapter)
{
	struct device_node *busnode, *dev = NULL;
	struct pmac_i2c_bus *bus;

	bus = pmac_i2c_adapter_to_bus(adapter);
	if (bus == NULL)
		return -ENODEV;
	busnode = pmac_i2c_get_bus_node(bus);

	while ((dev = of_get_next_child(busnode, dev)) != NULL) {
		if (device_is_compatible(dev, "tas3004")) {
			u32 *addr;
			printk(KERN_DEBUG PFX "found tas3004\n");
			addr = (u32 *) get_property(dev, "reg", NULL);
			if (!addr)
				continue;
			return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
		}
		/* older machines have no 'codec' node with a 'compatible'
		 * property that says 'tas3004', they just have a 'deq'
		 * node without any such property... */
		if (strcmp(dev->name, "deq") == 0) {
			u32 *_addr, addr;
			printk(KERN_DEBUG PFX "found 'deq' node\n");
			_addr = (u32 *) get_property(dev, "i2c-address", NULL);
			if (!_addr)
				continue;
			addr = ((*_addr) >> 1) & 0x7f;
			/* now, if the address doesn't match any of the two
			 * that a tas3004 can have, we cannot handle this.
			 * I doubt it ever happens but hey. */
			if (addr != 0x34 && addr != 0x35)
				continue;
			return tas_create(adapter, dev, addr);
		}
	}
	return -ENODEV;
}

static int tas_i2c_detach(struct i2c_client *client)
{
	struct tas *tas = container_of(client, struct tas, i2c);
	int err;
	u8 tmp = TAS_ACR_ANALOG_PDOWN;

	if ((err = i2c_detach_client(client)))
		return err;
	aoa_codec_unregister(&tas->codec);
	of_node_put(tas->codec.node);

	/* power down codec chip */
	tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);

980
	mutex_destroy(&tas->mtx);
J
Johannes Berg 已提交
981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
	kfree(tas);
	return 0;
}

static struct i2c_driver tas_driver = {
	.driver = {
		.name = "aoa_codec_tas",
		.owner = THIS_MODULE,
	},
	.attach_adapter = tas_i2c_attach,
	.detach_client = tas_i2c_detach,
};

static int __init tas_init(void)
{
	return i2c_add_driver(&tas_driver);
}

static void __exit tas_exit(void)
{
	i2c_del_driver(&tas_driver);
}

module_init(tas_init);
module_exit(tas_exit);