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 #include <linux/delay.h>
9 #include <linux/gpio/consumer.h>
10 #include <linux/i2c.h>
11 #include <linux/module.h>
12 #include <linux/of_device.h>
13 #include <linux/of_gpio.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/regulator/consumer.h>
16 #include <linux/reset.h>
17 #include <linux/slab.h>
18 #include <sound/initval.h>
19 #include <sound/pcm_params.h>
20 #include <sound/soc.h>
21 #include <sound/soc-dapm.h>
22 #include <sound/tlv.h>
23
24 #include "ak4458.h"
25
26 #define AK4458_NUM_SUPPLIES 2
27 static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = {
28 "DVDD",
29 "AVDD",
30 };
31
32 enum ak4458_type {
33 AK4458 = 0,
34 AK4497 = 1,
35 };
36
37 struct ak4458_drvdata {
38 struct snd_soc_dai_driver *dai_drv;
39 const struct snd_soc_component_driver *comp_drv;
40 enum ak4458_type type;
41 };
42
43 /* AK4458 Codec Private Data */
44 struct ak4458_priv {
45 struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES];
46 const struct ak4458_drvdata *drvdata;
47 struct device *dev;
48 struct regmap *regmap;
49 struct gpio_desc *reset_gpiod;
50 struct reset_control *reset;
51 struct gpio_desc *mute_gpiod;
52 int digfil; /* SSLOW, SD, SLOW bits */
53 int fs; /* sampling rate */
54 int fmt;
55 int slots;
56 int slot_width;
57 u32 dsd_path; /* For ak4497 */
58 };
59
60 static const struct reg_default ak4458_reg_defaults[] = {
61 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */
62 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */
63 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */
64 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */
65 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */
66 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */
67 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */
68 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */
69 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */
70 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */
71 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */
72 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */
73 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */
74 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */
75 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */
76 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */
77 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */
78 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */
79 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */
80 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */
81 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */
82 };
83
84 /*
85 * Volume control:
86 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
87 */
88 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
89
90 /*
91 * DEM1 bit DEM0 bit Mode
92 * 0 0 44.1kHz
93 * 0 1 OFF (default)
94 * 1 0 48kHz
95 * 1 1 32kHz
96 */
97 static const char * const ak4458_dem_select_texts[] = {
98 "44.1kHz", "OFF", "48kHz", "32kHz"
99 };
100
101 /*
102 * SSLOW, SD, SLOW bits Digital Filter Setting
103 * 0, 0, 0 : Sharp Roll-Off Filter
104 * 0, 0, 1 : Slow Roll-Off Filter
105 * 0, 1, 0 : Short delay Sharp Roll-Off Filter
106 * 0, 1, 1 : Short delay Slow Roll-Off Filter
107 * 1, *, * : Super Slow Roll-Off Filter
108 */
109 static const char * const ak4458_digfil_select_texts[] = {
110 "Sharp Roll-Off Filter",
111 "Slow Roll-Off Filter",
112 "Short delay Sharp Roll-Off Filter",
113 "Short delay Slow Roll-Off Filter",
114 "Super Slow Roll-Off Filter"
115 };
116
117 /*
118 * DZFB: Inverting Enable of DZF
119 * 0: DZF goes H at Zero Detection
120 * 1: DZF goes L at Zero Detection
121 */
122 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
123
124 /*
125 * SC1-0 bits: Sound Mode Setting
126 * 0 0 : Sound Mode 0
127 * 0 1 : Sound Mode 1
128 * 1 0 : Sound Mode 2
129 * 1 1 : Reserved
130 */
131 static const char * const ak4458_sc_select_texts[] = {
132 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
133 };
134
135 /* FIR2-0 bits: FIR Filter Mode Setting */
136 static const char * const ak4458_fir_select_texts[] = {
137 "Mode 0", "Mode 1", "Mode 2", "Mode 3",
138 "Mode 4", "Mode 5", "Mode 6", "Mode 7",
139 };
140
141 /* ATS1-0 bits Attenuation Speed */
142 static const char * const ak4458_ats_select_texts[] = {
143 "4080/fs", "2040/fs", "510/fs", "255/fs",
144 };
145
146 /* DIF2 bit Audio Interface Format Setting(BICK fs) */
147 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
148
149 static const struct soc_enum ak4458_dac1_dem_enum =
150 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
151 ARRAY_SIZE(ak4458_dem_select_texts),
152 ak4458_dem_select_texts);
153 static const struct soc_enum ak4458_dac2_dem_enum =
154 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
155 ARRAY_SIZE(ak4458_dem_select_texts),
156 ak4458_dem_select_texts);
157 static const struct soc_enum ak4458_dac3_dem_enum =
158 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
159 ARRAY_SIZE(ak4458_dem_select_texts),
160 ak4458_dem_select_texts);
161 static const struct soc_enum ak4458_dac4_dem_enum =
162 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
163 ARRAY_SIZE(ak4458_dem_select_texts),
164 ak4458_dem_select_texts);
165 static const struct soc_enum ak4458_digfil_enum =
166 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
167 ak4458_digfil_select_texts);
168 static const struct soc_enum ak4458_dzfb_enum =
169 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
170 ARRAY_SIZE(ak4458_dzfb_select_texts),
171 ak4458_dzfb_select_texts);
172 static const struct soc_enum ak4458_sm_enum =
173 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
174 ARRAY_SIZE(ak4458_sc_select_texts),
175 ak4458_sc_select_texts);
176 static const struct soc_enum ak4458_fir_enum =
177 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
178 ARRAY_SIZE(ak4458_fir_select_texts),
179 ak4458_fir_select_texts);
180 static const struct soc_enum ak4458_ats_enum =
181 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
182 ARRAY_SIZE(ak4458_ats_select_texts),
183 ak4458_ats_select_texts);
184 static const struct soc_enum ak4458_dif_enum =
185 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
186 ARRAY_SIZE(ak4458_dif_select_texts),
187 ak4458_dif_select_texts);
188
get_digfil(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)189 static int get_digfil(struct snd_kcontrol *kcontrol,
190 struct snd_ctl_elem_value *ucontrol)
191 {
192 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
193 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
194
195 ucontrol->value.enumerated.item[0] = ak4458->digfil;
196
197 return 0;
198 }
199
set_digfil(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)200 static int set_digfil(struct snd_kcontrol *kcontrol,
201 struct snd_ctl_elem_value *ucontrol)
202 {
203 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
204 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
205 int num;
206
207 num = ucontrol->value.enumerated.item[0];
208 if (num > 4)
209 return -EINVAL;
210
211 ak4458->digfil = num;
212
213 /* write SD bit */
214 snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
215 AK4458_SD_MASK,
216 ((ak4458->digfil & 0x02) << 4));
217
218 /* write SLOW bit */
219 snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
220 AK4458_SLOW_MASK,
221 (ak4458->digfil & 0x01));
222
223 /* write SSLOW bit */
224 snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
225 AK4458_SSLOW_MASK,
226 ((ak4458->digfil & 0x04) >> 2));
227
228 return 0;
229 }
230
231 static const struct snd_kcontrol_new ak4458_snd_controls[] = {
232 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
233 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
234 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
235 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
236 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
237 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
238 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
239 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
240 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
241 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
242 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
243 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
244 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
245 get_digfil, set_digfil),
246 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
247 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
248 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
249 SOC_ENUM("AK4458 Attenuation transition Time Setting",
250 ak4458_ats_enum),
251 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
252 };
253
254 /* ak4458 dapm widgets */
255 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
256 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
257 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
258 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
259
260 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
261 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
262
263 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
264 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
265
266 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
267 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
268 };
269
270 static const struct snd_soc_dapm_route ak4458_intercon[] = {
271 {"AK4458 DAC1", NULL, "AK4458 SDTI"},
272 {"AK4458 AOUTA", NULL, "AK4458 DAC1"},
273
274 {"AK4458 DAC2", NULL, "AK4458 SDTI"},
275 {"AK4458 AOUTB", NULL, "AK4458 DAC2"},
276
277 {"AK4458 DAC3", NULL, "AK4458 SDTI"},
278 {"AK4458 AOUTC", NULL, "AK4458 DAC3"},
279
280 {"AK4458 DAC4", NULL, "AK4458 SDTI"},
281 {"AK4458 AOUTD", NULL, "AK4458 DAC4"},
282 };
283
284 /* ak4497 controls */
285 static const struct snd_kcontrol_new ak4497_snd_controls[] = {
286 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
287 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
288 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
289 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
290 get_digfil, set_digfil),
291 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
292 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
293 SOC_ENUM("AK4497 Attenuation transition Time Setting",
294 ak4458_ats_enum),
295 };
296
297 /* ak4497 dapm widgets */
298 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
299 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
300 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
301 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
302 };
303
304 /* ak4497 dapm routes */
305 static const struct snd_soc_dapm_route ak4497_intercon[] = {
306 {"AK4497 DAC", NULL, "AK4497 SDTI"},
307 {"AK4497 AOUT", NULL, "AK4497 DAC"},
308
309 };
310
ak4458_get_tdm_mode(struct ak4458_priv * ak4458)311 static int ak4458_get_tdm_mode(struct ak4458_priv *ak4458)
312 {
313 switch (ak4458->slots * ak4458->slot_width) {
314 case 128:
315 return 1;
316 case 256:
317 return 2;
318 case 512:
319 return 3;
320 default:
321 return 0;
322 }
323 }
324
ak4458_rstn_control(struct snd_soc_component * component,int bit)325 static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
326 {
327 int ret;
328
329 if (bit)
330 ret = snd_soc_component_update_bits(component,
331 AK4458_00_CONTROL1,
332 AK4458_RSTN_MASK,
333 0x1);
334 else
335 ret = snd_soc_component_update_bits(component,
336 AK4458_00_CONTROL1,
337 AK4458_RSTN_MASK,
338 0x0);
339 if (ret < 0)
340 return ret;
341
342 return 0;
343 }
344
ak4458_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)345 static int ak4458_hw_params(struct snd_pcm_substream *substream,
346 struct snd_pcm_hw_params *params,
347 struct snd_soc_dai *dai)
348 {
349 struct snd_soc_component *component = dai->component;
350 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
351 int pcm_width = max(params_physical_width(params), ak4458->slot_width);
352 u8 format, dsdsel0, dsdsel1, dchn;
353 int nfs1, dsd_bclk, ret, channels, channels_max;
354
355 nfs1 = params_rate(params);
356 ak4458->fs = nfs1;
357
358 /* calculate bit clock */
359 channels = params_channels(params);
360 channels_max = dai->driver->playback.channels_max;
361
362 switch (params_format(params)) {
363 case SNDRV_PCM_FORMAT_DSD_U8:
364 case SNDRV_PCM_FORMAT_DSD_U16_LE:
365 case SNDRV_PCM_FORMAT_DSD_U16_BE:
366 case SNDRV_PCM_FORMAT_DSD_U32_LE:
367 case SNDRV_PCM_FORMAT_DSD_U32_BE:
368 dsd_bclk = nfs1 * params_physical_width(params);
369 switch (dsd_bclk) {
370 case 2822400:
371 dsdsel0 = 0;
372 dsdsel1 = 0;
373 break;
374 case 5644800:
375 dsdsel0 = 1;
376 dsdsel1 = 0;
377 break;
378 case 11289600:
379 dsdsel0 = 0;
380 dsdsel1 = 1;
381 break;
382 case 22579200:
383 if (ak4458->drvdata->type == AK4497) {
384 dsdsel0 = 1;
385 dsdsel1 = 1;
386 } else {
387 dev_err(dai->dev, "DSD512 not supported.\n");
388 return -EINVAL;
389 }
390 break;
391 default:
392 dev_err(dai->dev, "Unsupported dsd bclk.\n");
393 return -EINVAL;
394 }
395
396 snd_soc_component_update_bits(component, AK4458_06_DSD1,
397 AK4458_DSDSEL_MASK, dsdsel0);
398 snd_soc_component_update_bits(component, AK4458_09_DSD2,
399 AK4458_DSDSEL_MASK, dsdsel1);
400 break;
401 }
402
403 /* Master Clock Frequency Auto Setting Mode Enable */
404 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
405
406 switch (pcm_width) {
407 case 16:
408 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
409 format = AK4458_DIF_24BIT_I2S;
410 else
411 format = AK4458_DIF_16BIT_LSB;
412 break;
413 case 32:
414 switch (ak4458->fmt) {
415 case SND_SOC_DAIFMT_I2S:
416 format = AK4458_DIF_32BIT_I2S;
417 break;
418 case SND_SOC_DAIFMT_LEFT_J:
419 format = AK4458_DIF_32BIT_MSB;
420 break;
421 case SND_SOC_DAIFMT_RIGHT_J:
422 format = AK4458_DIF_32BIT_LSB;
423 break;
424 case SND_SOC_DAIFMT_DSP_B:
425 format = AK4458_DIF_32BIT_MSB;
426 break;
427 case SND_SOC_DAIFMT_PDM:
428 format = AK4458_DIF_32BIT_MSB;
429 break;
430 default:
431 return -EINVAL;
432 }
433 break;
434 default:
435 return -EINVAL;
436 }
437
438 snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
439 AK4458_DIF_MASK, format);
440
441 /*
442 * Enable/disable Daisy Chain if in TDM mode and the number of played
443 * channels is bigger than the maximum supported number of channels
444 */
445 dchn = ak4458_get_tdm_mode(ak4458) &&
446 (ak4458->fmt == SND_SOC_DAIFMT_DSP_B) &&
447 (channels > channels_max) ? AK4458_DCHAIN_MASK : 0;
448
449 snd_soc_component_update_bits(component, AK4458_0B_CONTROL7,
450 AK4458_DCHAIN_MASK, dchn);
451
452 if (ak4458->drvdata->type == AK4497) {
453 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
454 0x4, (ak4458->dsd_path << 2));
455 if (ret < 0)
456 return ret;
457 }
458
459 ret = ak4458_rstn_control(component, 0);
460 if (ret)
461 return ret;
462
463 ret = ak4458_rstn_control(component, 1);
464 if (ret)
465 return ret;
466
467 return 0;
468 }
469
ak4458_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)470 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
471 {
472 struct snd_soc_component *component = dai->component;
473 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
474 int ret;
475
476 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
477 case SND_SOC_DAIFMT_CBC_CFC: /* Consumer Mode */
478 break;
479 case SND_SOC_DAIFMT_CBP_CFP: /* Provider Mode is not supported */
480 case SND_SOC_DAIFMT_CBC_CFP:
481 case SND_SOC_DAIFMT_CBP_CFC:
482 default:
483 dev_err(component->dev, "Clock provider mode unsupported\n");
484 return -EINVAL;
485 }
486
487 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
488 case SND_SOC_DAIFMT_I2S:
489 case SND_SOC_DAIFMT_LEFT_J:
490 case SND_SOC_DAIFMT_RIGHT_J:
491 case SND_SOC_DAIFMT_DSP_B:
492 case SND_SOC_DAIFMT_PDM:
493 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
494 break;
495 default:
496 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
497 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
498 return -EINVAL;
499 }
500
501 /* DSD mode */
502 snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
503 AK4458_DP_MASK,
504 ak4458->fmt == SND_SOC_DAIFMT_PDM ?
505 AK4458_DP_MASK : 0);
506
507 ret = ak4458_rstn_control(component, 0);
508 if (ret)
509 return ret;
510
511 ret = ak4458_rstn_control(component, 1);
512 if (ret)
513 return ret;
514
515 return 0;
516 }
517
518 static const int att_speed[] = { 4080, 2040, 510, 255 };
519
ak4458_set_dai_mute(struct snd_soc_dai * dai,int mute,int direction)520 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
521 {
522 struct snd_soc_component *component = dai->component;
523 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
524 int nfs, ndt, reg;
525 int ats;
526
527 nfs = ak4458->fs;
528
529 reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
530 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
531
532 ndt = att_speed[ats] / (nfs / 1000);
533
534 if (mute) {
535 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1);
536 mdelay(ndt);
537 if (ak4458->mute_gpiod)
538 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
539 } else {
540 if (ak4458->mute_gpiod)
541 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
542 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
543 mdelay(ndt);
544 }
545
546 return 0;
547 }
548
ak4458_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)549 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
550 unsigned int rx_mask, int slots, int slot_width)
551 {
552 struct snd_soc_component *component = dai->component;
553 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
554 int mode;
555
556 ak4458->slots = slots;
557 ak4458->slot_width = slot_width;
558
559 mode = ak4458_get_tdm_mode(ak4458) << AK4458_MODE_SHIFT;
560
561 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
562 AK4458_MODE_MASK,
563 mode);
564
565 return 0;
566 }
567
568 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
569 SNDRV_PCM_FMTBIT_S24_LE |\
570 SNDRV_PCM_FMTBIT_S32_LE |\
571 SNDRV_PCM_FMTBIT_DSD_U8 |\
572 SNDRV_PCM_FMTBIT_DSD_U16_LE |\
573 SNDRV_PCM_FMTBIT_DSD_U32_LE)
574
575 static const unsigned int ak4458_rates[] = {
576 8000, 11025, 16000, 22050,
577 32000, 44100, 48000, 88200,
578 96000, 176400, 192000, 352800,
579 384000, 705600, 768000, 1411200,
580 2822400,
581 };
582
583 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
584 .count = ARRAY_SIZE(ak4458_rates),
585 .list = ak4458_rates,
586 };
587
ak4458_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)588 static int ak4458_startup(struct snd_pcm_substream *substream,
589 struct snd_soc_dai *dai)
590 {
591 int ret;
592
593 ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
594 SNDRV_PCM_HW_PARAM_RATE,
595 &ak4458_rate_constraints);
596
597 return ret;
598 }
599
600 static const struct snd_soc_dai_ops ak4458_dai_ops = {
601 .startup = ak4458_startup,
602 .hw_params = ak4458_hw_params,
603 .set_fmt = ak4458_set_dai_fmt,
604 .mute_stream = ak4458_set_dai_mute,
605 .set_tdm_slot = ak4458_set_tdm_slot,
606 .no_capture_mute = 1,
607 };
608
609 static struct snd_soc_dai_driver ak4458_dai = {
610 .name = "ak4458-aif",
611 .playback = {
612 .stream_name = "Playback",
613 .channels_min = 1,
614 .channels_max = 8,
615 .rates = SNDRV_PCM_RATE_KNOT,
616 .formats = AK4458_FORMATS,
617 },
618 .ops = &ak4458_dai_ops,
619 };
620
621 static struct snd_soc_dai_driver ak4497_dai = {
622 .name = "ak4497-aif",
623 .playback = {
624 .stream_name = "Playback",
625 .channels_min = 1,
626 .channels_max = 2,
627 .rates = SNDRV_PCM_RATE_KNOT,
628 .formats = AK4458_FORMATS,
629 },
630 .ops = &ak4458_dai_ops,
631 };
632
ak4458_reset(struct ak4458_priv * ak4458,bool active)633 static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
634 {
635 if (ak4458->reset_gpiod) {
636 gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
637 usleep_range(1000, 2000);
638 } else if (!IS_ERR_OR_NULL(ak4458->reset)) {
639 if (active)
640 reset_control_assert(ak4458->reset);
641 else
642 reset_control_deassert(ak4458->reset);
643 usleep_range(1000, 2000);
644 }
645 }
646
647 #ifdef CONFIG_PM
ak4458_runtime_suspend(struct device * dev)648 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
649 {
650 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
651
652 regcache_cache_only(ak4458->regmap, true);
653
654 ak4458_reset(ak4458, true);
655
656 if (ak4458->mute_gpiod)
657 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
658
659 regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
660 ak4458->supplies);
661 return 0;
662 }
663
ak4458_runtime_resume(struct device * dev)664 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
665 {
666 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
667 int ret;
668
669 ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
670 ak4458->supplies);
671 if (ret != 0) {
672 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
673 return ret;
674 }
675
676 if (ak4458->mute_gpiod)
677 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
678
679 ak4458_reset(ak4458, false);
680
681 regcache_cache_only(ak4458->regmap, false);
682 regcache_mark_dirty(ak4458->regmap);
683
684 return regcache_sync(ak4458->regmap);
685 }
686 #endif /* CONFIG_PM */
687
688 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
689 .controls = ak4458_snd_controls,
690 .num_controls = ARRAY_SIZE(ak4458_snd_controls),
691 .dapm_widgets = ak4458_dapm_widgets,
692 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets),
693 .dapm_routes = ak4458_intercon,
694 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon),
695 .idle_bias_on = 1,
696 .use_pmdown_time = 1,
697 .endianness = 1,
698 };
699
700 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
701 .controls = ak4497_snd_controls,
702 .num_controls = ARRAY_SIZE(ak4497_snd_controls),
703 .dapm_widgets = ak4497_dapm_widgets,
704 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
705 .dapm_routes = ak4497_intercon,
706 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
707 .idle_bias_on = 1,
708 .use_pmdown_time = 1,
709 .endianness = 1,
710 };
711
712 static const struct regmap_config ak4458_regmap = {
713 .reg_bits = 8,
714 .val_bits = 8,
715
716 .max_register = AK4458_14_R4CHATT,
717 .reg_defaults = ak4458_reg_defaults,
718 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
719 .cache_type = REGCACHE_RBTREE,
720 };
721
722 static const struct ak4458_drvdata ak4458_drvdata = {
723 .dai_drv = &ak4458_dai,
724 .comp_drv = &soc_codec_dev_ak4458,
725 .type = AK4458,
726 };
727
728 static const struct ak4458_drvdata ak4497_drvdata = {
729 .dai_drv = &ak4497_dai,
730 .comp_drv = &soc_codec_dev_ak4497,
731 .type = AK4497,
732 };
733
734 static const struct dev_pm_ops ak4458_pm = {
735 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
736 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
737 pm_runtime_force_resume)
738 };
739
ak4458_i2c_probe(struct i2c_client * i2c)740 static int ak4458_i2c_probe(struct i2c_client *i2c)
741 {
742 struct ak4458_priv *ak4458;
743 int ret, i;
744
745 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
746 if (!ak4458)
747 return -ENOMEM;
748
749 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
750 if (IS_ERR(ak4458->regmap))
751 return PTR_ERR(ak4458->regmap);
752
753 i2c_set_clientdata(i2c, ak4458);
754 ak4458->dev = &i2c->dev;
755
756 ak4458->drvdata = of_device_get_match_data(&i2c->dev);
757
758 ak4458->reset = devm_reset_control_get_optional_shared(ak4458->dev, NULL);
759 if (IS_ERR(ak4458->reset))
760 return PTR_ERR(ak4458->reset);
761
762 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
763 GPIOD_OUT_LOW);
764 if (IS_ERR(ak4458->reset_gpiod))
765 return PTR_ERR(ak4458->reset_gpiod);
766
767 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
768 GPIOD_OUT_LOW);
769 if (IS_ERR(ak4458->mute_gpiod))
770 return PTR_ERR(ak4458->mute_gpiod);
771
772 /* Optional property for ak4497 */
773 of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
774
775 for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
776 ak4458->supplies[i].supply = ak4458_supply_names[i];
777
778 ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
779 ak4458->supplies);
780 if (ret != 0) {
781 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
782 return ret;
783 }
784
785 ret = devm_snd_soc_register_component(ak4458->dev,
786 ak4458->drvdata->comp_drv,
787 ak4458->drvdata->dai_drv, 1);
788 if (ret < 0) {
789 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
790 return ret;
791 }
792
793 pm_runtime_enable(&i2c->dev);
794 regcache_cache_only(ak4458->regmap, true);
795 ak4458_reset(ak4458, false);
796
797 return 0;
798 }
799
ak4458_i2c_remove(struct i2c_client * i2c)800 static void ak4458_i2c_remove(struct i2c_client *i2c)
801 {
802 struct ak4458_priv *ak4458 = i2c_get_clientdata(i2c);
803
804 ak4458_reset(ak4458, true);
805 pm_runtime_disable(&i2c->dev);
806 }
807
808 static const struct of_device_id ak4458_of_match[] = {
809 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
810 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
811 { },
812 };
813 MODULE_DEVICE_TABLE(of, ak4458_of_match);
814
815 static struct i2c_driver ak4458_i2c_driver = {
816 .driver = {
817 .name = "ak4458",
818 .pm = &ak4458_pm,
819 .of_match_table = ak4458_of_match,
820 },
821 .probe = ak4458_i2c_probe,
822 .remove = ak4458_i2c_remove,
823 };
824
825 module_i2c_driver(ak4458_i2c_driver);
826
827 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
828 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
829 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
830 MODULE_LICENSE("GPL v2");
831