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tracing: Have max_latency be defined for HWLAT_TRACER as well
[deliverable/linux.git] / sound / soc / codecs / tas571x.c
1 /*
2 * TAS571x amplifier audio driver
3 *
4 * Copyright (C) 2015 Google, Inc.
5 * Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
6 *
7 * TAS5721 support:
8 * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 */
15
16 #include <linux/clk.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/gpio/consumer.h>
20 #include <linux/i2c.h>
21 #include <linux/init.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/of_device.h>
25 #include <linux/regmap.h>
26 #include <linux/regulator/consumer.h>
27 #include <linux/stddef.h>
28 #include <sound/pcm_params.h>
29 #include <sound/soc.h>
30 #include <sound/tlv.h>
31 #include <asm/unaligned.h>
32
33 #include "tas571x.h"
34
35 #define TAS571X_MAX_SUPPLIES 6
36
37 struct tas571x_chip {
38 const char *const *supply_names;
39 int num_supply_names;
40 const struct snd_kcontrol_new *controls;
41 int num_controls;
42 const struct regmap_config *regmap_config;
43 int vol_reg_size;
44 };
45
46 struct tas571x_private {
47 const struct tas571x_chip *chip;
48 struct regmap *regmap;
49 struct regulator_bulk_data supplies[TAS571X_MAX_SUPPLIES];
50 struct clk *mclk;
51 unsigned int format;
52 struct gpio_desc *reset_gpio;
53 struct gpio_desc *pdn_gpio;
54 struct snd_soc_codec_driver codec_driver;
55 };
56
57 static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
58 {
59 switch (reg) {
60 case TAS571X_MVOL_REG:
61 case TAS571X_CH1_VOL_REG:
62 case TAS571X_CH2_VOL_REG:
63 return priv->chip->vol_reg_size;
64 case TAS571X_INPUT_MUX_REG:
65 case TAS571X_CH4_SRC_SELECT_REG:
66 case TAS571X_PWM_MUX_REG:
67 case TAS5717_CH1_RIGHT_CH_MIX_REG:
68 case TAS5717_CH1_LEFT_CH_MIX_REG:
69 case TAS5717_CH2_LEFT_CH_MIX_REG:
70 case TAS5717_CH2_RIGHT_CH_MIX_REG:
71 return 4;
72 default:
73 return 1;
74 }
75 }
76
77 static int tas571x_reg_write(void *context, unsigned int reg,
78 unsigned int value)
79 {
80 struct i2c_client *client = context;
81 struct tas571x_private *priv = i2c_get_clientdata(client);
82 unsigned int i, size;
83 uint8_t buf[5];
84 int ret;
85
86 size = tas571x_register_size(priv, reg);
87 buf[0] = reg;
88
89 for (i = size; i >= 1; --i) {
90 buf[i] = value;
91 value >>= 8;
92 }
93
94 ret = i2c_master_send(client, buf, size + 1);
95 if (ret == size + 1)
96 return 0;
97 else if (ret < 0)
98 return ret;
99 else
100 return -EIO;
101 }
102
103 static int tas571x_reg_read(void *context, unsigned int reg,
104 unsigned int *value)
105 {
106 struct i2c_client *client = context;
107 struct tas571x_private *priv = i2c_get_clientdata(client);
108 uint8_t send_buf, recv_buf[4];
109 struct i2c_msg msgs[2];
110 unsigned int size;
111 unsigned int i;
112 int ret;
113
114 size = tas571x_register_size(priv, reg);
115 send_buf = reg;
116
117 msgs[0].addr = client->addr;
118 msgs[0].len = sizeof(send_buf);
119 msgs[0].buf = &send_buf;
120 msgs[0].flags = 0;
121
122 msgs[1].addr = client->addr;
123 msgs[1].len = size;
124 msgs[1].buf = recv_buf;
125 msgs[1].flags = I2C_M_RD;
126
127 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
128 if (ret < 0)
129 return ret;
130 else if (ret != ARRAY_SIZE(msgs))
131 return -EIO;
132
133 *value = 0;
134
135 for (i = 0; i < size; i++) {
136 *value <<= 8;
137 *value |= recv_buf[i];
138 }
139
140 return 0;
141 }
142
143 /*
144 * register write for 8- and 20-byte registers
145 */
146 static int tas571x_reg_write_multiword(struct i2c_client *client,
147 unsigned int reg, const long values[], size_t len)
148 {
149 size_t i;
150 uint8_t *buf, *p;
151 int ret;
152 size_t send_size = 1 + len * sizeof(uint32_t);
153
154 buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA);
155 if (!buf)
156 return -ENOMEM;
157 buf[0] = reg;
158
159 for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t))
160 put_unaligned_be32(values[i], p);
161
162 ret = i2c_master_send(client, buf, send_size);
163
164 kfree(buf);
165
166 if (ret == send_size)
167 return 0;
168 else if (ret < 0)
169 return ret;
170 else
171 return -EIO;
172 }
173
174 /*
175 * register read for 8- and 20-byte registers
176 */
177 static int tas571x_reg_read_multiword(struct i2c_client *client,
178 unsigned int reg, long values[], size_t len)
179 {
180 unsigned int i;
181 uint8_t send_buf;
182 uint8_t *recv_buf, *p;
183 struct i2c_msg msgs[2];
184 unsigned int recv_size = len * sizeof(uint32_t);
185 int ret;
186
187 recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA);
188 if (!recv_buf)
189 return -ENOMEM;
190
191 send_buf = reg;
192
193 msgs[0].addr = client->addr;
194 msgs[0].len = sizeof(send_buf);
195 msgs[0].buf = &send_buf;
196 msgs[0].flags = 0;
197
198 msgs[1].addr = client->addr;
199 msgs[1].len = recv_size;
200 msgs[1].buf = recv_buf;
201 msgs[1].flags = I2C_M_RD;
202
203 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
204 if (ret < 0)
205 goto err_ret;
206 else if (ret != ARRAY_SIZE(msgs)) {
207 ret = -EIO;
208 goto err_ret;
209 }
210
211 for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t))
212 values[i] = get_unaligned_be32(p);
213
214 err_ret:
215 kfree(recv_buf);
216 return ret;
217 }
218
219 /*
220 * Integer array controls for setting biquad, mixer, DRC coefficients.
221 * According to the datasheet each coefficient is effectively 26bits,
222 * i.e. stored as 32bits, where bits [31:26] are ignored.
223 * TI's TAS57xx Graphical Development Environment tool however produces
224 * coefficients with more than 26 bits. For this reason we allow values
225 * in the full 32-bits reange.
226 * The coefficients are ordered as given in the TAS571x data sheet:
227 * b0, b1, b2, a1, a2
228 */
229
230 static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol,
231 struct snd_ctl_elem_info *uinfo)
232 {
233 int numcoef = kcontrol->private_value >> 16;
234
235 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
236 uinfo->count = numcoef;
237 uinfo->value.integer.min = 0;
238 uinfo->value.integer.max = 0xffffffff;
239 return 0;
240 }
241
242 static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol,
243 struct snd_ctl_elem_value *ucontrol)
244 {
245 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
246 struct i2c_client *i2c = to_i2c_client(codec->dev);
247 int numcoef = kcontrol->private_value >> 16;
248 int index = kcontrol->private_value & 0xffff;
249
250 return tas571x_reg_read_multiword(i2c, index,
251 ucontrol->value.integer.value, numcoef);
252 }
253
254 static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol,
255 struct snd_ctl_elem_value *ucontrol)
256 {
257 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
258 struct i2c_client *i2c = to_i2c_client(codec->dev);
259 int numcoef = kcontrol->private_value >> 16;
260 int index = kcontrol->private_value & 0xffff;
261
262 return tas571x_reg_write_multiword(i2c, index,
263 ucontrol->value.integer.value, numcoef);
264 }
265
266 static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
267 {
268 struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
269
270 priv->format = format;
271
272 return 0;
273 }
274
275 static int tas571x_hw_params(struct snd_pcm_substream *substream,
276 struct snd_pcm_hw_params *params,
277 struct snd_soc_dai *dai)
278 {
279 struct tas571x_private *priv = snd_soc_codec_get_drvdata(dai->codec);
280 u32 val;
281
282 switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
283 case SND_SOC_DAIFMT_RIGHT_J:
284 val = 0x00;
285 break;
286 case SND_SOC_DAIFMT_I2S:
287 val = 0x03;
288 break;
289 case SND_SOC_DAIFMT_LEFT_J:
290 val = 0x06;
291 break;
292 default:
293 return -EINVAL;
294 }
295
296 if (params_width(params) >= 24)
297 val += 2;
298 else if (params_width(params) >= 20)
299 val += 1;
300
301 return regmap_update_bits(priv->regmap, TAS571X_SDI_REG,
302 TAS571X_SDI_FMT_MASK, val);
303 }
304
305 static int tas571x_mute(struct snd_soc_dai *dai, int mute)
306 {
307 struct snd_soc_codec *codec = dai->codec;
308 u8 sysctl2;
309 int ret;
310
311 sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;
312
313 ret = snd_soc_update_bits(codec,
314 TAS571X_SYS_CTRL_2_REG,
315 TAS571X_SYS_CTRL_2_SDN_MASK,
316 sysctl2);
317 usleep_range(1000, 2000);
318
319 return ret;
320 }
321
322 static int tas571x_set_bias_level(struct snd_soc_codec *codec,
323 enum snd_soc_bias_level level)
324 {
325 struct tas571x_private *priv = snd_soc_codec_get_drvdata(codec);
326 int ret;
327
328 switch (level) {
329 case SND_SOC_BIAS_ON:
330 break;
331 case SND_SOC_BIAS_PREPARE:
332 break;
333 case SND_SOC_BIAS_STANDBY:
334 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
335 if (!IS_ERR(priv->mclk)) {
336 ret = clk_prepare_enable(priv->mclk);
337 if (ret) {
338 dev_err(codec->dev,
339 "Failed to enable master clock: %d\n",
340 ret);
341 return ret;
342 }
343 }
344
345 gpiod_set_value(priv->pdn_gpio, 0);
346 usleep_range(5000, 6000);
347
348 regcache_cache_only(priv->regmap, false);
349 ret = regcache_sync(priv->regmap);
350 if (ret)
351 return ret;
352 }
353 break;
354 case SND_SOC_BIAS_OFF:
355 regcache_cache_only(priv->regmap, true);
356 gpiod_set_value(priv->pdn_gpio, 1);
357
358 if (!IS_ERR(priv->mclk))
359 clk_disable_unprepare(priv->mclk);
360 break;
361 }
362
363 return 0;
364 }
365
366 static const struct snd_soc_dai_ops tas571x_dai_ops = {
367 .set_fmt = tas571x_set_dai_fmt,
368 .hw_params = tas571x_hw_params,
369 .digital_mute = tas571x_mute,
370 };
371
372
373 #define BIQUAD_COEFS(xname, reg) \
374 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
375 .info = tas571x_coefficient_info, \
376 .get = tas571x_coefficient_get,\
377 .put = tas571x_coefficient_put, \
378 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
379 .private_value = reg | (5 << 16) }
380
381 static const char *const tas5711_supply_names[] = {
382 "AVDD",
383 "DVDD",
384 "PVDD_A",
385 "PVDD_B",
386 "PVDD_C",
387 "PVDD_D",
388 };
389
390 static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1);
391
392 static const struct snd_kcontrol_new tas5711_controls[] = {
393 SOC_SINGLE_TLV("Master Volume",
394 TAS571X_MVOL_REG,
395 0, 0xff, 1, tas5711_volume_tlv),
396 SOC_DOUBLE_R_TLV("Speaker Volume",
397 TAS571X_CH1_VOL_REG,
398 TAS571X_CH2_VOL_REG,
399 0, 0xff, 1, tas5711_volume_tlv),
400 SOC_DOUBLE("Speaker Switch",
401 TAS571X_SOFT_MUTE_REG,
402 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
403 1, 1),
404
405 SOC_DOUBLE_R_RANGE("CH1 Mixer Volume",
406 TAS5717_CH1_LEFT_CH_MIX_REG,
407 TAS5717_CH1_RIGHT_CH_MIX_REG,
408 16, 0, 0x80, 0),
409
410 SOC_DOUBLE_R_RANGE("CH2 Mixer Volume",
411 TAS5717_CH2_LEFT_CH_MIX_REG,
412 TAS5717_CH2_RIGHT_CH_MIX_REG,
413 16, 0, 0x80, 0),
414 };
415
416 static const struct regmap_range tas571x_readonly_regs_range[] = {
417 regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_DEV_ID_REG),
418 };
419
420 static const struct regmap_range tas571x_volatile_regs_range[] = {
421 regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_ERR_STATUS_REG),
422 regmap_reg_range(TAS571X_OSC_TRIM_REG, TAS571X_OSC_TRIM_REG),
423 };
424
425 static const struct regmap_access_table tas571x_write_regs = {
426 .no_ranges = tas571x_readonly_regs_range,
427 .n_no_ranges = ARRAY_SIZE(tas571x_readonly_regs_range),
428 };
429
430 static const struct regmap_access_table tas571x_volatile_regs = {
431 .yes_ranges = tas571x_volatile_regs_range,
432 .n_yes_ranges = ARRAY_SIZE(tas571x_volatile_regs_range),
433
434 };
435
436 static const struct reg_default tas5711_reg_defaults[] = {
437 { 0x04, 0x05 },
438 { 0x05, 0x40 },
439 { 0x06, 0x00 },
440 { 0x07, 0xff },
441 { 0x08, 0x30 },
442 { 0x09, 0x30 },
443 { 0x1b, 0x82 },
444 };
445
446 static const struct regmap_config tas5711_regmap_config = {
447 .reg_bits = 8,
448 .val_bits = 32,
449 .max_register = 0xff,
450 .reg_read = tas571x_reg_read,
451 .reg_write = tas571x_reg_write,
452 .reg_defaults = tas5711_reg_defaults,
453 .num_reg_defaults = ARRAY_SIZE(tas5711_reg_defaults),
454 .cache_type = REGCACHE_RBTREE,
455 .wr_table = &tas571x_write_regs,
456 .volatile_table = &tas571x_volatile_regs,
457 };
458
459 static const struct tas571x_chip tas5711_chip = {
460 .supply_names = tas5711_supply_names,
461 .num_supply_names = ARRAY_SIZE(tas5711_supply_names),
462 .controls = tas5711_controls,
463 .num_controls = ARRAY_SIZE(tas5711_controls),
464 .regmap_config = &tas5711_regmap_config,
465 .vol_reg_size = 1,
466 };
467
468 static const char *const tas5717_supply_names[] = {
469 "AVDD",
470 "DVDD",
471 "HPVDD",
472 "PVDD_AB",
473 "PVDD_CD",
474 };
475
476 static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0);
477
478 static const struct snd_kcontrol_new tas5717_controls[] = {
479 /* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */
480 SOC_SINGLE_TLV("Master Volume",
481 TAS571X_MVOL_REG, 1, 0x1ff, 1,
482 tas5717_volume_tlv),
483 SOC_DOUBLE_R_TLV("Speaker Volume",
484 TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG,
485 1, 0x1ff, 1, tas5717_volume_tlv),
486 SOC_DOUBLE("Speaker Switch",
487 TAS571X_SOFT_MUTE_REG,
488 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
489 1, 1),
490
491 /*
492 * The biquads are named according to the register names.
493 * Please note that TI's TAS57xx Graphical Development Environment
494 * tool names them different.
495 */
496 BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG),
497 BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG),
498 BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG),
499 BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG),
500 BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG),
501 BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG),
502 BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG),
503 BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG),
504 BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG),
505 BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG),
506 BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG),
507 BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG),
508
509 BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG),
510 BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG),
511 BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG),
512 BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG),
513 BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG),
514 BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG),
515 BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG),
516 BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG),
517 BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG),
518 BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG),
519 BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG),
520 BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG),
521
522 BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG),
523 BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG),
524
525 BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG),
526 BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG),
527 };
528
529 static const struct reg_default tas5717_reg_defaults[] = {
530 { 0x04, 0x05 },
531 { 0x05, 0x40 },
532 { 0x06, 0x00 },
533 { 0x07, 0x03ff },
534 { 0x08, 0x00c0 },
535 { 0x09, 0x00c0 },
536 { 0x1b, 0x82 },
537 { TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 },
538 { TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000},
539 { TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 },
540 { TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000},
541 };
542
543 static const struct regmap_config tas5717_regmap_config = {
544 .reg_bits = 8,
545 .val_bits = 32,
546 .max_register = 0xff,
547 .reg_read = tas571x_reg_read,
548 .reg_write = tas571x_reg_write,
549 .reg_defaults = tas5717_reg_defaults,
550 .num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults),
551 .cache_type = REGCACHE_RBTREE,
552 .wr_table = &tas571x_write_regs,
553 .volatile_table = &tas571x_volatile_regs,
554 };
555
556 /* This entry is reused for tas5719 as the software interface is identical. */
557 static const struct tas571x_chip tas5717_chip = {
558 .supply_names = tas5717_supply_names,
559 .num_supply_names = ARRAY_SIZE(tas5717_supply_names),
560 .controls = tas5717_controls,
561 .num_controls = ARRAY_SIZE(tas5717_controls),
562 .regmap_config = &tas5717_regmap_config,
563 .vol_reg_size = 2,
564 };
565
566 static const char *const tas5721_supply_names[] = {
567 "AVDD",
568 "DVDD",
569 "DRVDD",
570 "PVDD",
571 };
572
573 static const struct snd_kcontrol_new tas5721_controls[] = {
574 SOC_SINGLE_TLV("Master Volume",
575 TAS571X_MVOL_REG,
576 0, 0xff, 1, tas5711_volume_tlv),
577 SOC_DOUBLE_R_TLV("Speaker Volume",
578 TAS571X_CH1_VOL_REG,
579 TAS571X_CH2_VOL_REG,
580 0, 0xff, 1, tas5711_volume_tlv),
581 SOC_DOUBLE("Speaker Switch",
582 TAS571X_SOFT_MUTE_REG,
583 TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
584 1, 1),
585 };
586
587 static const struct reg_default tas5721_reg_defaults[] = {
588 {TAS571X_CLK_CTRL_REG, 0x6c},
589 {TAS571X_DEV_ID_REG, 0x00},
590 {TAS571X_ERR_STATUS_REG, 0x00},
591 {TAS571X_SYS_CTRL_1_REG, 0xa0},
592 {TAS571X_SDI_REG, 0x05},
593 {TAS571X_SYS_CTRL_2_REG, 0x40},
594 {TAS571X_SOFT_MUTE_REG, 0x00},
595 {TAS571X_MVOL_REG, 0xff},
596 {TAS571X_CH1_VOL_REG, 0x30},
597 {TAS571X_CH2_VOL_REG, 0x30},
598 {TAS571X_CH3_VOL_REG, 0x30},
599 {TAS571X_VOL_CFG_REG, 0x91},
600 {TAS571X_MODULATION_LIMIT_REG, 0x02},
601 {TAS571X_IC_DELAY_CH1_REG, 0xac},
602 {TAS571X_IC_DELAY_CH2_REG, 0x54},
603 {TAS571X_IC_DELAY_CH3_REG, 0xac},
604 {TAS571X_IC_DELAY_CH4_REG, 0x54},
605 {TAS571X_PWM_CH_SDN_GROUP_REG, 0x30},
606 {TAS571X_START_STOP_PERIOD_REG, 0x0f},
607 {TAS571X_OSC_TRIM_REG, 0x82},
608 {TAS571X_BKND_ERR_REG, 0x02},
609 {TAS571X_INPUT_MUX_REG, 0x17772},
610 {TAS571X_CH4_SRC_SELECT_REG, 0x4303},
611 {TAS571X_PWM_MUX_REG, 0x1021345},
612 };
613
614 static const struct regmap_config tas5721_regmap_config = {
615 .reg_bits = 8,
616 .val_bits = 32,
617 .max_register = 0xff,
618 .reg_read = tas571x_reg_read,
619 .reg_write = tas571x_reg_write,
620 .reg_defaults = tas5721_reg_defaults,
621 .num_reg_defaults = ARRAY_SIZE(tas5721_reg_defaults),
622 .cache_type = REGCACHE_RBTREE,
623 .wr_table = &tas571x_write_regs,
624 .volatile_table = &tas571x_volatile_regs,
625 };
626
627
628 static const struct tas571x_chip tas5721_chip = {
629 .supply_names = tas5721_supply_names,
630 .num_supply_names = ARRAY_SIZE(tas5721_supply_names),
631 .controls = tas5711_controls,
632 .num_controls = ARRAY_SIZE(tas5711_controls),
633 .regmap_config = &tas5721_regmap_config,
634 .vol_reg_size = 1,
635 };
636
637 static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
638 SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
639 SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
640
641 SND_SOC_DAPM_OUTPUT("OUT_A"),
642 SND_SOC_DAPM_OUTPUT("OUT_B"),
643 SND_SOC_DAPM_OUTPUT("OUT_C"),
644 SND_SOC_DAPM_OUTPUT("OUT_D"),
645 };
646
647 static const struct snd_soc_dapm_route tas571x_dapm_routes[] = {
648 { "DACL", NULL, "Playback" },
649 { "DACR", NULL, "Playback" },
650
651 { "OUT_A", NULL, "DACL" },
652 { "OUT_B", NULL, "DACL" },
653 { "OUT_C", NULL, "DACR" },
654 { "OUT_D", NULL, "DACR" },
655 };
656
657 static const struct snd_soc_codec_driver tas571x_codec = {
658 .set_bias_level = tas571x_set_bias_level,
659 .idle_bias_off = true,
660
661 .dapm_widgets = tas571x_dapm_widgets,
662 .num_dapm_widgets = ARRAY_SIZE(tas571x_dapm_widgets),
663 .dapm_routes = tas571x_dapm_routes,
664 .num_dapm_routes = ARRAY_SIZE(tas571x_dapm_routes),
665 };
666
667 static struct snd_soc_dai_driver tas571x_dai = {
668 .name = "tas571x-hifi",
669 .playback = {
670 .stream_name = "Playback",
671 .channels_min = 2,
672 .channels_max = 2,
673 .rates = SNDRV_PCM_RATE_8000_48000,
674 .formats = SNDRV_PCM_FMTBIT_S32_LE |
675 SNDRV_PCM_FMTBIT_S24_LE |
676 SNDRV_PCM_FMTBIT_S16_LE,
677 },
678 .ops = &tas571x_dai_ops,
679 };
680
681 static const struct of_device_id tas571x_of_match[];
682
683 static int tas571x_i2c_probe(struct i2c_client *client,
684 const struct i2c_device_id *id)
685 {
686 struct tas571x_private *priv;
687 struct device *dev = &client->dev;
688 const struct of_device_id *of_id;
689 int i, ret;
690
691 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
692 if (!priv)
693 return -ENOMEM;
694 i2c_set_clientdata(client, priv);
695
696 of_id = of_match_device(tas571x_of_match, dev);
697 if (of_id)
698 priv->chip = of_id->data;
699 else
700 priv->chip = (void *) id->driver_data;
701
702 priv->mclk = devm_clk_get(dev, "mclk");
703 if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
704 dev_err(dev, "Failed to request mclk: %ld\n",
705 PTR_ERR(priv->mclk));
706 return PTR_ERR(priv->mclk);
707 }
708
709 BUG_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES);
710 for (i = 0; i < priv->chip->num_supply_names; i++)
711 priv->supplies[i].supply = priv->chip->supply_names[i];
712
713 ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names,
714 priv->supplies);
715 if (ret) {
716 dev_err(dev, "Failed to get supplies: %d\n", ret);
717 return ret;
718 }
719 ret = regulator_bulk_enable(priv->chip->num_supply_names,
720 priv->supplies);
721 if (ret) {
722 dev_err(dev, "Failed to enable supplies: %d\n", ret);
723 return ret;
724 }
725
726 priv->regmap = devm_regmap_init(dev, NULL, client,
727 priv->chip->regmap_config);
728 if (IS_ERR(priv->regmap))
729 return PTR_ERR(priv->regmap);
730
731 priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
732 if (IS_ERR(priv->pdn_gpio)) {
733 dev_err(dev, "error requesting pdn_gpio: %ld\n",
734 PTR_ERR(priv->pdn_gpio));
735 return PTR_ERR(priv->pdn_gpio);
736 }
737
738 priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
739 GPIOD_OUT_HIGH);
740 if (IS_ERR(priv->reset_gpio)) {
741 dev_err(dev, "error requesting reset_gpio: %ld\n",
742 PTR_ERR(priv->reset_gpio));
743 return PTR_ERR(priv->reset_gpio);
744 } else if (priv->reset_gpio) {
745 /* pulse the active low reset line for ~100us */
746 usleep_range(100, 200);
747 gpiod_set_value(priv->reset_gpio, 0);
748 usleep_range(12000, 20000);
749 }
750
751 ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);
752 if (ret)
753 return ret;
754
755
756 memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver));
757 priv->codec_driver.controls = priv->chip->controls;
758 priv->codec_driver.num_controls = priv->chip->num_controls;
759
760 if (priv->chip->vol_reg_size == 2) {
761 /*
762 * The master volume defaults to 0x3ff (mute), but we ignore
763 * (zero) the LSB because the hardware step size is 0.125 dB
764 * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB.
765 */
766 ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0);
767 if (ret)
768 return ret;
769 }
770
771 regcache_cache_only(priv->regmap, true);
772 gpiod_set_value(priv->pdn_gpio, 1);
773
774 return snd_soc_register_codec(&client->dev, &priv->codec_driver,
775 &tas571x_dai, 1);
776 }
777
778 static int tas571x_i2c_remove(struct i2c_client *client)
779 {
780 struct tas571x_private *priv = i2c_get_clientdata(client);
781
782 snd_soc_unregister_codec(&client->dev);
783 regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);
784
785 return 0;
786 }
787
788 static const struct of_device_id tas571x_of_match[] = {
789 { .compatible = "ti,tas5711", .data = &tas5711_chip, },
790 { .compatible = "ti,tas5717", .data = &tas5717_chip, },
791 { .compatible = "ti,tas5719", .data = &tas5717_chip, },
792 { .compatible = "ti,tas5721", .data = &tas5721_chip, },
793 { }
794 };
795 MODULE_DEVICE_TABLE(of, tas571x_of_match);
796
797 static const struct i2c_device_id tas571x_i2c_id[] = {
798 { "tas5711", (kernel_ulong_t) &tas5711_chip },
799 { "tas5717", (kernel_ulong_t) &tas5717_chip },
800 { "tas5719", (kernel_ulong_t) &tas5717_chip },
801 { "tas5721", (kernel_ulong_t) &tas5721_chip },
802 { }
803 };
804 MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);
805
806 static struct i2c_driver tas571x_i2c_driver = {
807 .driver = {
808 .name = "tas571x",
809 .of_match_table = of_match_ptr(tas571x_of_match),
810 },
811 .probe = tas571x_i2c_probe,
812 .remove = tas571x_i2c_remove,
813 .id_table = tas571x_i2c_id,
814 };
815 module_i2c_driver(tas571x_i2c_driver);
816
817 MODULE_DESCRIPTION("ASoC TAS571x driver");
818 MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>");
819 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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