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ASoC: ak4458: ak4458_regmap can be static
[linux-2.6-block.git] / sound / soc / codecs / ak4458.c
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08660086
CGS		 1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Audio driver for AK4458 DAC
4 *
5 * Copyright (C) 2016 Asahi Kasei Microdevices Corporation
6 * Copyright 2018 NXP
7 */
8
9#include <linux/module.h>
10#include <linux/delay.h>
11#include <linux/slab.h>
12#include <linux/gpio/consumer.h>
13#include <linux/of_device.h>
14#include <linux/of_gpio.h>
15#include <linux/pm_runtime.h>
16#include <linux/i2c.h>
17#include <sound/soc.h>
18#include <sound/soc-dapm.h>
19#include <sound/initval.h>
20#include <sound/tlv.h>
21#include <sound/pcm_params.h>
22
23#include "ak4458.h"
24
25/* AK4458 Codec Private Data */
26struct ak4458_priv {
27 struct device *dev;
28 struct regmap *regmap;
29 struct gpio_desc *reset_gpiod;
30 struct gpio_desc *mute_gpiod;
31 int digfil; /* SSLOW, SD, SLOW bits */
32 int fs; /* sampling rate */
33 int fmt;
34 int slots;
35 int slot_width;
36};
37
38static const struct reg_default ak4458_reg_defaults[] = {
39 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */
40 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */
41 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */
42 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */
43 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */
44 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */
45 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */
46 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */
47 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */
48 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */
49 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */
50 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */
51 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */
52 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */
53 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */
54 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */
55 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */
56 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */
57 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */
58 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */
59 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */
60};
61
62/*
63 * Volume control:
64 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
65 */
66static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
67
68/*
69 * DEM1 bit DEM0 bit Mode
70 * 0 0 44.1kHz
71 * 0 1 OFF (default)
72 * 1 0 48kHz
73 * 1 1 32kHz
74 */
75static const char * const ak4458_dem_select_texts[] = {
76 "44.1kHz", "OFF", "48kHz", "32kHz"
77};
78
79/*
80 * SSLOW, SD, SLOW bits Digital Filter Setting
81 * 0, 0, 0 : Sharp Roll-Off Filter
82 * 0, 0, 1 : Slow Roll-Off Filter
83 * 0, 1, 0 : Short delay Sharp Roll-Off Filter
84 * 0, 1, 1 : Short delay Slow Roll-Off Filter
85 * 1, *, * : Super Slow Roll-Off Filter
86 */
87static const char * const ak4458_digfil_select_texts[] = {
88 "Sharp Roll-Off Filter",
89 "Slow Roll-Off Filter",
90 "Short delay Sharp Roll-Off Filter",
91 "Short delay Slow Roll-Off Filter",
92 "Super Slow Roll-Off Filter"
93};
94
95/*
96 * DZFB: Inverting Enable of DZF
97 * 0: DZF goes H at Zero Detection
98 * 1: DZF goes L at Zero Detection
99 */
100static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
101
102/*
103 * SC1-0 bits: Sound Mode Setting
104 * 0 0 : Sound Mode 0
105 * 0 1 : Sound Mode 1
106 * 1 0 : Sound Mode 2
107 * 1 1 : Reserved
108 */
109static const char * const ak4458_sc_select_texts[] = {
110 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
111};
112
113/* FIR2-0 bits: FIR Filter Mode Setting */
114static const char * const ak4458_fir_select_texts[] = {
115 "Mode 0", "Mode 1", "Mode 2", "Mode 3",
116 "Mode 4", "Mode 5", "Mode 6", "Mode 7",
117};
118
119/* ATS1-0 bits Attenuation Speed */
120static const char * const ak4458_ats_select_texts[] = {
121 "4080/fs", "2040/fs", "510/fs", "255/fs",
122};
123
124/* DIF2 bit Audio Interface Format Setting(BICK fs) */
125static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
126
127static const struct soc_enum ak4458_dac1_dem_enum =
128 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
129 ARRAY_SIZE(ak4458_dem_select_texts),
130 ak4458_dem_select_texts);
131static const struct soc_enum ak4458_dac2_dem_enum =
132 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
133 ARRAY_SIZE(ak4458_dem_select_texts),
134 ak4458_dem_select_texts);
135static const struct soc_enum ak4458_dac3_dem_enum =
136 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
137 ARRAY_SIZE(ak4458_dem_select_texts),
138 ak4458_dem_select_texts);
139static const struct soc_enum ak4458_dac4_dem_enum =
140 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
141 ARRAY_SIZE(ak4458_dem_select_texts),
142 ak4458_dem_select_texts);
143static const struct soc_enum ak4458_digfil_enum =
144 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
145 ak4458_digfil_select_texts);
146static const struct soc_enum ak4458_dzfb_enum =
147 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
148 ARRAY_SIZE(ak4458_dzfb_select_texts),
149 ak4458_dzfb_select_texts);
150static const struct soc_enum ak4458_sm_enum =
151 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
152 ARRAY_SIZE(ak4458_sc_select_texts),
153 ak4458_sc_select_texts);
154static const struct soc_enum ak4458_fir_enum =
155 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
156 ARRAY_SIZE(ak4458_fir_select_texts),
157 ak4458_fir_select_texts);
158static const struct soc_enum ak4458_ats_enum =
159 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
160 ARRAY_SIZE(ak4458_ats_select_texts),
161 ak4458_ats_select_texts);
162static const struct soc_enum ak4458_dif_enum =
163 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
164 ARRAY_SIZE(ak4458_dif_select_texts),
165 ak4458_dif_select_texts);
166
167static int get_digfil(struct snd_kcontrol *kcontrol,
168 struct snd_ctl_elem_value *ucontrol)
169{
170 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
171 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
172
173 ucontrol->value.enumerated.item[0] = ak4458->digfil;
174
175 return 0;
176}
177
178static int set_digfil(struct snd_kcontrol *kcontrol,
179 struct snd_ctl_elem_value *ucontrol)
180{
181 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
182 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
183 int num;
184
185 num = ucontrol->value.enumerated.item[0];
186 if (num > 4)
187 return -EINVAL;
188
189 ak4458->digfil = num;
190
191 /* write SD bit */
192 snd_soc_update_bits(codec, AK4458_01_CONTROL2,
193 AK4458_SD_MASK,
194 ((ak4458->digfil & 0x02) << 4));
195
196 /* write SLOW bit */
197 snd_soc_update_bits(codec, AK4458_02_CONTROL3,
198 AK4458_SLOW_MASK,
199 (ak4458->digfil & 0x01));
200
201 /* write SSLOW bit */
202 snd_soc_update_bits(codec, AK4458_05_CONTROL4,
203 AK4458_SSLOW_MASK,
204 ((ak4458->digfil & 0x04) >> 2));
205
206 return 0;
207}
208
209static const struct snd_kcontrol_new ak4458_snd_controls[] = {
210 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
211 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
212 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
213 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
214 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
215 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
216 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
217 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
218 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
219 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
220 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
221 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
222 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
223 get_digfil, set_digfil),
224 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
225 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
226 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
227 SOC_ENUM("AK4458 Attenuation transition Time Setting",
228 ak4458_ats_enum),
229 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
230};
231
232/* ak4458 dapm widgets */
233static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
234 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
235 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
236 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
237
238 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
239 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
240
241 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
242 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
243
244 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
245 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
246};
247
248static const struct snd_soc_dapm_route ak4458_intercon[] = {
249 {"AK4458 DAC1", NULL, "AK4458 SDTI"},
250 {"AK4458 AOUTA", NULL, "AK4458 DAC1"},
251
252 {"AK4458 DAC2", NULL, "AK4458 SDTI"},
253 {"AK4458 AOUTB", NULL, "AK4458 DAC2"},
254
255 {"AK4458 DAC3", NULL, "AK4458 SDTI"},
256 {"AK4458 AOUTC", NULL, "AK4458 DAC3"},
257
258 {"AK4458 DAC4", NULL, "AK4458 SDTI"},
259 {"AK4458 AOUTD", NULL, "AK4458 DAC4"},
260};
261
262static int ak4458_rstn_control(struct snd_soc_codec *codec, int bit)
263{
264 int ret;
265
266 if (bit)
267 ret = snd_soc_update_bits(codec,
268 AK4458_00_CONTROL1,
269 AK4458_RSTN_MASK,
270 0x1);
271 else
272 ret = snd_soc_update_bits(codec,
273 AK4458_00_CONTROL1,
274 AK4458_RSTN_MASK,
275 0x0);
276 return ret;
277}
278
279static int ak4458_hw_params(struct snd_pcm_substream *substream,
280 struct snd_pcm_hw_params *params,
281 struct snd_soc_dai *dai)
282{
283 struct snd_soc_codec *codec = dai->codec;
284 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
285 int pcm_width = max(params_physical_width(params), ak4458->slot_width);
286 int nfs1;
287 u8 format;
288
289 nfs1 = params_rate(params);
290 ak4458->fs = nfs1;
291
292 /* Master Clock Frequency Auto Setting Mode Enable */
293 snd_soc_update_bits(codec, AK4458_00_CONTROL1, 0x80, 0x80);
294
295 switch (pcm_width) {
296 case 16:
297 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
298 format = AK4458_DIF_24BIT_I2S;
299 else
300 format = AK4458_DIF_16BIT_LSB;
301 break;
302 case 32:
303 switch (ak4458->fmt) {
304 case SND_SOC_DAIFMT_I2S:
305 format = AK4458_DIF_32BIT_I2S;
306 break;
307 case SND_SOC_DAIFMT_LEFT_J:
308 format = AK4458_DIF_32BIT_MSB;
309 break;
310 case SND_SOC_DAIFMT_RIGHT_J:
311 format = AK4458_DIF_32BIT_LSB;
312 break;
313 case SND_SOC_DAIFMT_DSP_B:
314 format = AK4458_DIF_32BIT_MSB;
315 break;
316 default:
317 return -EINVAL;
318 }
319 break;
320 default:
321 return -EINVAL;
322 }
323
324 snd_soc_update_bits(codec, AK4458_00_CONTROL1,
325 AK4458_DIF_MASK, format);
326
327 ak4458_rstn_control(codec, 0);
328 ak4458_rstn_control(codec, 1);
329
330 return 0;
331}
332
333static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
334{
335 struct snd_soc_codec *codec = dai->codec;
336 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
337
338 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
339 case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
340 break;
341 case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
342 case SND_SOC_DAIFMT_CBS_CFM:
343 case SND_SOC_DAIFMT_CBM_CFS:
344 default:
345 dev_err(codec->dev, "Master mode unsupported\n");
346 return -EINVAL;
347 }
348
349 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
350 case SND_SOC_DAIFMT_I2S:
351 case SND_SOC_DAIFMT_LEFT_J:
352 case SND_SOC_DAIFMT_RIGHT_J:
353 case SND_SOC_DAIFMT_DSP_B:
354 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
355 break;
356 default:
357 dev_err(codec->dev, "Audio format 0x%02X unsupported\n",
358 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
359 return -EINVAL;
360 }
361
362 ak4458_rstn_control(codec, 0);
363 ak4458_rstn_control(codec, 1);
364
365 return 0;
366}
367
368static const int att_speed[] = { 4080, 2040, 510, 255 };
369
370static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute)
371{
372 struct snd_soc_codec *codec = dai->codec;
373 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
374 int nfs, ndt, ret, reg;
375 int ats;
376
377 nfs = ak4458->fs;
378
379 reg = snd_soc_read(codec, AK4458_0B_CONTROL7);
380 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
381
382 ndt = att_speed[ats] / (nfs / 1000);
383
384 if (mute) {
385 ret = snd_soc_update_bits(codec, AK4458_01_CONTROL2, 0x01, 1);
386 mdelay(ndt);
387 if (ak4458->mute_gpiod)
388 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
389 } else {
390 if (ak4458->mute_gpiod)
391 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
392 ret = snd_soc_update_bits(codec, AK4458_01_CONTROL2, 0x01, 0);
393 mdelay(ndt);
394 }
395
396 return 0;
397}
398
399static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
400 unsigned int rx_mask, int slots, int slot_width)
401{
402 struct snd_soc_codec *codec = dai->codec;
403 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
404 int mode;
405
406 ak4458->slots = slots;
407 ak4458->slot_width = slot_width;
408
409 switch (slots * slot_width) {
410 case 128:
411 mode = AK4458_MODE_TDM128;
412 break;
413 case 256:
414 mode = AK4458_MODE_TDM256;
415 break;
416 case 512:
417 mode = AK4458_MODE_TDM512;
418 break;
419 default:
420 mode = AK4458_MODE_NORMAL;
421 break;
422 }
423
424 snd_soc_update_bits(codec, AK4458_0A_CONTROL6,
425 AK4458_MODE_MASK,
426 mode);
427
428 return 0;
429}
430
431#define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
432 SNDRV_PCM_FMTBIT_S24_LE |\
433 SNDRV_PCM_FMTBIT_S32_LE)
434
435static const unsigned int ak4458_rates[] = {
436 8000, 11025, 16000, 22050,
437 32000, 44100, 48000, 88200,
438 96000, 176400, 192000, 352800,
439 384000, 705600, 768000, 1411200,
440 2822400,
441};
442
443static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
444 .count = ARRAY_SIZE(ak4458_rates),
445 .list = ak4458_rates,
446};
447
448static int ak4458_startup(struct snd_pcm_substream *substream,
449 struct snd_soc_dai *dai)
450{
451 int ret;
452
453 ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
454 SNDRV_PCM_HW_PARAM_RATE,
455 &ak4458_rate_constraints);
456
457 return ret;
458}
459
460static struct snd_soc_dai_ops ak4458_dai_ops = {
461 .startup = ak4458_startup,
462 .hw_params = ak4458_hw_params,
463 .set_fmt = ak4458_set_dai_fmt,
464 .digital_mute = ak4458_set_dai_mute,
465 .set_tdm_slot = ak4458_set_tdm_slot,
466};
467
468static struct snd_soc_dai_driver ak4458_dai = {
469 .name = "ak4458-aif",
470 .playback = {
471 .stream_name = "Playback",
472 .channels_min = 1,
473 .channels_max = 8,
474 .rates = SNDRV_PCM_RATE_KNOT,
475 .formats = AK4458_FORMATS,
476 },
477 .ops = &ak4458_dai_ops,
478};
479
480static void ak4458_power_off(struct ak4458_priv *ak4458)
481{
482 if (ak4458->reset_gpiod) {
483 gpiod_set_value_cansleep(ak4458->reset_gpiod, 0);
484 usleep_range(1000, 2000);
485 }
486}
487
488static void ak4458_power_on(struct ak4458_priv *ak4458)
489{
490 if (ak4458->reset_gpiod) {
491 gpiod_set_value_cansleep(ak4458->reset_gpiod, 1);
492 usleep_range(1000, 2000);
493 }
494}
495
496static void ak4458_init(struct snd_soc_codec *codec)
497{
498 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
499
500 /* External Mute ON */
501 if (ak4458->mute_gpiod)
502 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
503
504 ak4458_power_on(ak4458);
505
506 snd_soc_update_bits(codec, AK4458_00_CONTROL1,
507 0x80, 0x80); /* ACKS bit = 1; 10000000 */
508
509 ak4458_rstn_control(codec, 1);
510}
511
512static int ak4458_probe(struct snd_soc_codec *codec)
513{
514 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
515
516 ak4458_init(codec);
517
518 ak4458->fs = 48000;
519
520 return 0;
521}
522
523static int ak4458_remove(struct snd_soc_codec *codec)
524{
525 struct ak4458_priv *ak4458 = snd_soc_codec_get_drvdata(codec);
526
527 ak4458_power_off(ak4458);
528
529 return 0;
530}
531
532#ifdef CONFIG_PM
533static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
534{
535 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
536
537 regcache_cache_only(ak4458->regmap, true);
538
539 ak4458_power_off(ak4458);
540
541 if (ak4458->mute_gpiod)
542 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
543
544 return 0;
545}
546
547static int __maybe_unused ak4458_runtime_resume(struct device *dev)
548{
549 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
550
551 if (ak4458->mute_gpiod)
552 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
553
554 ak4458_power_off(ak4458);
555 ak4458_power_on(ak4458);
556
557 regcache_cache_only(ak4458->regmap, false);
558 regcache_mark_dirty(ak4458->regmap);
559
560 return regcache_sync(ak4458->regmap);
561}
562#endif /* CONFIG_PM */
563
564struct snd_soc_codec_driver soc_codec_dev_ak4458 = {
565 .probe = ak4458_probe,
566 .remove = ak4458_remove,
567 .component_driver = {
568 .controls = ak4458_snd_controls,
569 .num_controls = ARRAY_SIZE(ak4458_snd_controls),
570 .dapm_widgets = ak4458_dapm_widgets,
571 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets),
572 .dapm_routes = ak4458_intercon,
573 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon),
574 },
575};
576
71ca54b6 577static const struct regmap_config ak4458_regmap = {
08660086
CGS		 578 .reg_bits = 8,
579 .val_bits = 8,
580
581 .max_register = AK4458_14_R4CHATT,
582 .reg_defaults = ak4458_reg_defaults,
583 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
584 .cache_type = REGCACHE_RBTREE,
585};
586
71ca54b6 587static const struct dev_pm_ops ak4458_pm = {
08660086
CGS		 588 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
589 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
590 pm_runtime_force_resume)
591};
592
593static int ak4458_i2c_probe(struct i2c_client *i2c)
594{
595 struct ak4458_priv *ak4458;
596 int ret;
597
598 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
599 if (!ak4458)
600 return -ENOMEM;
601
602 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
603 if (IS_ERR(ak4458->regmap))
604 return PTR_ERR(ak4458->regmap);
605
606 i2c_set_clientdata(i2c, ak4458);
607 ak4458->dev = &i2c->dev;
608
609 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
610 GPIOD_OUT_LOW);
611 if (IS_ERR(ak4458->reset_gpiod))
612 return PTR_ERR(ak4458->reset_gpiod);
613
614 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
615 GPIOD_OUT_LOW);
616 if (IS_ERR(ak4458->mute_gpiod))
617 return PTR_ERR(ak4458->mute_gpiod);
618
619 ret = snd_soc_register_codec(ak4458->dev, &soc_codec_dev_ak4458,
620 &ak4458_dai, 1);
621 if (ret < 0) {
622 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
623 return ret;
624 }
625
626 pm_runtime_enable(&i2c->dev);
627
628 return 0;
629}
630
631static int ak4458_i2c_remove(struct i2c_client *i2c)
632{
633 snd_soc_unregister_codec(&i2c->dev);
634 pm_runtime_disable(&i2c->dev);
635
636 return 0;
637}
638
639static const struct of_device_id ak4458_of_match[] = {
640 { .compatible = "asahi-kasei,ak4458", },
641 { },
642};
643
644static struct i2c_driver ak4458_i2c_driver = {
645 .driver = {
646 .name = "ak4458",
647 .pm = &ak4458_pm,
648 .of_match_table = ak4458_of_match,
649 },
650 .probe_new = ak4458_i2c_probe,
651 .remove = ak4458_i2c_remove,
652};
653
654module_i2c_driver(ak4458_i2c_driver);
655
656MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
657MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
658MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
659MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)