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/slab.h>
17 #include <sound/initval.h>
18 #include <sound/pcm_params.h>
19 #include <sound/soc.h>
20 #include <sound/soc-dapm.h>
21 #include <sound/tlv.h>
22
23 #include "ak4458.h"
24
25 #define AK4458_NUM_SUPPLIES 2
26 static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = {
27 "DVDD",
28 "AVDD",
29 };
30
31 enum ak4458_type {
32 AK4458 = 0,
33 AK4497 = 1,
34 };
35
36 struct ak4458_drvdata {
37 struct snd_soc_dai_driver *dai_drv;
38 const struct snd_soc_component_driver *comp_drv;
39 enum ak4458_type type;
40 };
41
42 /* AK4458 Codec Private Data */
43 struct ak4458_priv {
44 struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES];
45 const struct ak4458_drvdata *drvdata;
46 struct device *dev;
47 struct regmap *regmap;
48 struct gpio_desc *reset_gpiod;
49 struct gpio_desc *mute_gpiod;
50 int digfil; /* SSLOW, SD, SLOW bits */
51 int fs; /* sampling rate */
52 int fmt;
53 int slots;
54 int slot_width;
55 u32 dsd_path; /* For ak4497 */
56 };
57
58 static const struct reg_default ak4458_reg_defaults[] = {
59 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */
60 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */
61 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */
62 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */
63 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */
64 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */
65 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */
66 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */
67 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */
68 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */
69 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */
70 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */
71 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */
72 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */
73 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */
74 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */
75 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */
76 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */
77 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */
78 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */
79 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */
80 };
81
82 /*
83 * Volume control:
84 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
85 */
86 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
87
88 /*
89 * DEM1 bit DEM0 bit Mode
90 * 0 0 44.1kHz
91 * 0 1 OFF (default)
92 * 1 0 48kHz
93 * 1 1 32kHz
94 */
95 static const char * const ak4458_dem_select_texts[] = {
96 "44.1kHz", "OFF", "48kHz", "32kHz"
97 };
98
99 /*
100 * SSLOW, SD, SLOW bits Digital Filter Setting
101 * 0, 0, 0 : Sharp Roll-Off Filter
102 * 0, 0, 1 : Slow Roll-Off Filter
103 * 0, 1, 0 : Short delay Sharp Roll-Off Filter
104 * 0, 1, 1 : Short delay Slow Roll-Off Filter
105 * 1, *, * : Super Slow Roll-Off Filter
106 */
107 static const char * const ak4458_digfil_select_texts[] = {
108 "Sharp Roll-Off Filter",
109 "Slow Roll-Off Filter",
110 "Short delay Sharp Roll-Off Filter",
111 "Short delay Slow Roll-Off Filter",
112 "Super Slow Roll-Off Filter"
113 };
114
115 /*
116 * DZFB: Inverting Enable of DZF
117 * 0: DZF goes H at Zero Detection
118 * 1: DZF goes L at Zero Detection
119 */
120 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
121
122 /*
123 * SC1-0 bits: Sound Mode Setting
124 * 0 0 : Sound Mode 0
125 * 0 1 : Sound Mode 1
126 * 1 0 : Sound Mode 2
127 * 1 1 : Reserved
128 */
129 static const char * const ak4458_sc_select_texts[] = {
130 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
131 };
132
133 /* FIR2-0 bits: FIR Filter Mode Setting */
134 static const char * const ak4458_fir_select_texts[] = {
135 "Mode 0", "Mode 1", "Mode 2", "Mode 3",
136 "Mode 4", "Mode 5", "Mode 6", "Mode 7",
137 };
138
139 /* ATS1-0 bits Attenuation Speed */
140 static const char * const ak4458_ats_select_texts[] = {
141 "4080/fs", "2040/fs", "510/fs", "255/fs",
142 };
143
144 /* DIF2 bit Audio Interface Format Setting(BICK fs) */
145 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
146
147 static const struct soc_enum ak4458_dac1_dem_enum =
148 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
149 ARRAY_SIZE(ak4458_dem_select_texts),
150 ak4458_dem_select_texts);
151 static const struct soc_enum ak4458_dac2_dem_enum =
152 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
153 ARRAY_SIZE(ak4458_dem_select_texts),
154 ak4458_dem_select_texts);
155 static const struct soc_enum ak4458_dac3_dem_enum =
156 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
157 ARRAY_SIZE(ak4458_dem_select_texts),
158 ak4458_dem_select_texts);
159 static const struct soc_enum ak4458_dac4_dem_enum =
160 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
161 ARRAY_SIZE(ak4458_dem_select_texts),
162 ak4458_dem_select_texts);
163 static const struct soc_enum ak4458_digfil_enum =
164 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
165 ak4458_digfil_select_texts);
166 static const struct soc_enum ak4458_dzfb_enum =
167 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
168 ARRAY_SIZE(ak4458_dzfb_select_texts),
169 ak4458_dzfb_select_texts);
170 static const struct soc_enum ak4458_sm_enum =
171 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
172 ARRAY_SIZE(ak4458_sc_select_texts),
173 ak4458_sc_select_texts);
174 static const struct soc_enum ak4458_fir_enum =
175 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
176 ARRAY_SIZE(ak4458_fir_select_texts),
177 ak4458_fir_select_texts);
178 static const struct soc_enum ak4458_ats_enum =
179 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
180 ARRAY_SIZE(ak4458_ats_select_texts),
181 ak4458_ats_select_texts);
182 static const struct soc_enum ak4458_dif_enum =
183 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
184 ARRAY_SIZE(ak4458_dif_select_texts),
185 ak4458_dif_select_texts);
186
get_digfil(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)187 static int get_digfil(struct snd_kcontrol *kcontrol,
188 struct snd_ctl_elem_value *ucontrol)
189 {
190 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
191 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
192
193 ucontrol->value.enumerated.item[0] = ak4458->digfil;
194
195 return 0;
196 }
197
set_digfil(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)198 static int set_digfil(struct snd_kcontrol *kcontrol,
199 struct snd_ctl_elem_value *ucontrol)
200 {
201 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
202 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
203 int num;
204
205 num = ucontrol->value.enumerated.item[0];
206 if (num > 4)
207 return -EINVAL;
208
209 ak4458->digfil = num;
210
211 /* write SD bit */
212 snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
213 AK4458_SD_MASK,
214 ((ak4458->digfil & 0x02) << 4));
215
216 /* write SLOW bit */
217 snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
218 AK4458_SLOW_MASK,
219 (ak4458->digfil & 0x01));
220
221 /* write SSLOW bit */
222 snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
223 AK4458_SSLOW_MASK,
224 ((ak4458->digfil & 0x04) >> 2));
225
226 return 0;
227 }
228
229 static const struct snd_kcontrol_new ak4458_snd_controls[] = {
230 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
231 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
232 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
233 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
234 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
235 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
236 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
237 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
238 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
239 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
240 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
241 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
242 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
243 get_digfil, set_digfil),
244 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
245 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
246 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
247 SOC_ENUM("AK4458 Attenuation transition Time Setting",
248 ak4458_ats_enum),
249 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
250 };
251
252 /* ak4458 dapm widgets */
253 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
254 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
255 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
256 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
257
258 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
259 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
260
261 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
262 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
263
264 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
265 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
266 };
267
268 static const struct snd_soc_dapm_route ak4458_intercon[] = {
269 {"AK4458 DAC1", NULL, "AK4458 SDTI"},
270 {"AK4458 AOUTA", NULL, "AK4458 DAC1"},
271
272 {"AK4458 DAC2", NULL, "AK4458 SDTI"},
273 {"AK4458 AOUTB", NULL, "AK4458 DAC2"},
274
275 {"AK4458 DAC3", NULL, "AK4458 SDTI"},
276 {"AK4458 AOUTC", NULL, "AK4458 DAC3"},
277
278 {"AK4458 DAC4", NULL, "AK4458 SDTI"},
279 {"AK4458 AOUTD", NULL, "AK4458 DAC4"},
280 };
281
282 /* ak4497 controls */
283 static const struct snd_kcontrol_new ak4497_snd_controls[] = {
284 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
285 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
286 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
287 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
288 get_digfil, set_digfil),
289 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
290 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
291 SOC_ENUM("AK4497 Attenuation transition Time Setting",
292 ak4458_ats_enum),
293 };
294
295 /* ak4497 dapm widgets */
296 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
297 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
298 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
299 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
300 };
301
302 /* ak4497 dapm routes */
303 static const struct snd_soc_dapm_route ak4497_intercon[] = {
304 {"AK4497 DAC", NULL, "AK4497 SDTI"},
305 {"AK4497 AOUT", NULL, "AK4497 DAC"},
306
307 };
308
ak4458_rstn_control(struct snd_soc_component * component,int bit)309 static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
310 {
311 int ret;
312
313 if (bit)
314 ret = snd_soc_component_update_bits(component,
315 AK4458_00_CONTROL1,
316 AK4458_RSTN_MASK,
317 0x1);
318 else
319 ret = snd_soc_component_update_bits(component,
320 AK4458_00_CONTROL1,
321 AK4458_RSTN_MASK,
322 0x0);
323 if (ret < 0)
324 return ret;
325
326 return 0;
327 }
328
ak4458_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)329 static int ak4458_hw_params(struct snd_pcm_substream *substream,
330 struct snd_pcm_hw_params *params,
331 struct snd_soc_dai *dai)
332 {
333 struct snd_soc_component *component = dai->component;
334 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
335 int pcm_width = max(params_physical_width(params), ak4458->slot_width);
336 u8 format, dsdsel0, dsdsel1;
337 int nfs1, dsd_bclk;
338
339 nfs1 = params_rate(params);
340 ak4458->fs = nfs1;
341
342 /* calculate bit clock */
343 switch (params_format(params)) {
344 case SNDRV_PCM_FORMAT_DSD_U8:
345 case SNDRV_PCM_FORMAT_DSD_U16_LE:
346 case SNDRV_PCM_FORMAT_DSD_U16_BE:
347 case SNDRV_PCM_FORMAT_DSD_U32_LE:
348 case SNDRV_PCM_FORMAT_DSD_U32_BE:
349 dsd_bclk = nfs1 * params_physical_width(params);
350 switch (dsd_bclk) {
351 case 2822400:
352 dsdsel0 = 0;
353 dsdsel1 = 0;
354 break;
355 case 5644800:
356 dsdsel0 = 1;
357 dsdsel1 = 0;
358 break;
359 case 11289600:
360 dsdsel0 = 0;
361 dsdsel1 = 1;
362 break;
363 case 22579200:
364 if (ak4458->drvdata->type == AK4497) {
365 dsdsel0 = 1;
366 dsdsel1 = 1;
367 } else {
368 dev_err(dai->dev, "DSD512 not supported.\n");
369 return -EINVAL;
370 }
371 break;
372 default:
373 dev_err(dai->dev, "Unsupported dsd bclk.\n");
374 return -EINVAL;
375 }
376
377 snd_soc_component_update_bits(component, AK4458_06_DSD1,
378 AK4458_DSDSEL_MASK, dsdsel0);
379 snd_soc_component_update_bits(component, AK4458_09_DSD2,
380 AK4458_DSDSEL_MASK, dsdsel1);
381 break;
382 }
383
384 /* Master Clock Frequency Auto Setting Mode Enable */
385 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
386
387 switch (pcm_width) {
388 case 16:
389 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
390 format = AK4458_DIF_24BIT_I2S;
391 else
392 format = AK4458_DIF_16BIT_LSB;
393 break;
394 case 32:
395 switch (ak4458->fmt) {
396 case SND_SOC_DAIFMT_I2S:
397 format = AK4458_DIF_32BIT_I2S;
398 break;
399 case SND_SOC_DAIFMT_LEFT_J:
400 format = AK4458_DIF_32BIT_MSB;
401 break;
402 case SND_SOC_DAIFMT_RIGHT_J:
403 format = AK4458_DIF_32BIT_LSB;
404 break;
405 case SND_SOC_DAIFMT_DSP_B:
406 format = AK4458_DIF_32BIT_MSB;
407 break;
408 case SND_SOC_DAIFMT_PDM:
409 format = AK4458_DIF_32BIT_MSB;
410 break;
411 default:
412 return -EINVAL;
413 }
414 break;
415 default:
416 return -EINVAL;
417 }
418
419 snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
420 AK4458_DIF_MASK, format);
421
422 ak4458_rstn_control(component, 0);
423 ak4458_rstn_control(component, 1);
424
425 return 0;
426 }
427
ak4458_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)428 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
429 {
430 struct snd_soc_component *component = dai->component;
431 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
432
433 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
434 case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
435 break;
436 case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
437 case SND_SOC_DAIFMT_CBS_CFM:
438 case SND_SOC_DAIFMT_CBM_CFS:
439 default:
440 dev_err(component->dev, "Master mode unsupported\n");
441 return -EINVAL;
442 }
443
444 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
445 case SND_SOC_DAIFMT_I2S:
446 case SND_SOC_DAIFMT_LEFT_J:
447 case SND_SOC_DAIFMT_RIGHT_J:
448 case SND_SOC_DAIFMT_DSP_B:
449 case SND_SOC_DAIFMT_PDM:
450 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
451 break;
452 default:
453 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
454 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
455 return -EINVAL;
456 }
457
458 /* DSD mode */
459 snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
460 AK4458_DP_MASK,
461 ak4458->fmt == SND_SOC_DAIFMT_PDM ?
462 AK4458_DP_MASK : 0);
463
464 ak4458_rstn_control(component, 0);
465 ak4458_rstn_control(component, 1);
466
467 return 0;
468 }
469
470 static const int att_speed[] = { 4080, 2040, 510, 255 };
471
ak4458_set_dai_mute(struct snd_soc_dai * dai,int mute,int direction)472 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
473 {
474 struct snd_soc_component *component = dai->component;
475 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
476 int nfs, ndt, reg;
477 int ats;
478
479 nfs = ak4458->fs;
480
481 reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
482 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
483
484 ndt = att_speed[ats] / (nfs / 1000);
485
486 if (mute) {
487 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1);
488 mdelay(ndt);
489 if (ak4458->mute_gpiod)
490 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
491 } else {
492 if (ak4458->mute_gpiod)
493 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
494 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
495 mdelay(ndt);
496 }
497
498 return 0;
499 }
500
ak4458_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)501 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
502 unsigned int rx_mask, int slots, int slot_width)
503 {
504 struct snd_soc_component *component = dai->component;
505 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
506 int mode;
507
508 ak4458->slots = slots;
509 ak4458->slot_width = slot_width;
510
511 switch (slots * slot_width) {
512 case 128:
513 mode = AK4458_MODE_TDM128;
514 break;
515 case 256:
516 mode = AK4458_MODE_TDM256;
517 break;
518 case 512:
519 mode = AK4458_MODE_TDM512;
520 break;
521 default:
522 mode = AK4458_MODE_NORMAL;
523 break;
524 }
525
526 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
527 AK4458_MODE_MASK,
528 mode);
529
530 return 0;
531 }
532
533 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
534 SNDRV_PCM_FMTBIT_S24_LE |\
535 SNDRV_PCM_FMTBIT_S32_LE |\
536 SNDRV_PCM_FMTBIT_DSD_U8 |\
537 SNDRV_PCM_FMTBIT_DSD_U16_LE |\
538 SNDRV_PCM_FMTBIT_DSD_U32_LE)
539
540 static const unsigned int ak4458_rates[] = {
541 8000, 11025, 16000, 22050,
542 32000, 44100, 48000, 88200,
543 96000, 176400, 192000, 352800,
544 384000, 705600, 768000, 1411200,
545 2822400,
546 };
547
548 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
549 .count = ARRAY_SIZE(ak4458_rates),
550 .list = ak4458_rates,
551 };
552
ak4458_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)553 static int ak4458_startup(struct snd_pcm_substream *substream,
554 struct snd_soc_dai *dai)
555 {
556 int ret;
557
558 ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
559 SNDRV_PCM_HW_PARAM_RATE,
560 &ak4458_rate_constraints);
561
562 return ret;
563 }
564
565 static const struct snd_soc_dai_ops ak4458_dai_ops = {
566 .startup = ak4458_startup,
567 .hw_params = ak4458_hw_params,
568 .set_fmt = ak4458_set_dai_fmt,
569 .mute_stream = ak4458_set_dai_mute,
570 .set_tdm_slot = ak4458_set_tdm_slot,
571 .no_capture_mute = 1,
572 };
573
574 static struct snd_soc_dai_driver ak4458_dai = {
575 .name = "ak4458-aif",
576 .playback = {
577 .stream_name = "Playback",
578 .channels_min = 1,
579 .channels_max = 8,
580 .rates = SNDRV_PCM_RATE_KNOT,
581 .formats = AK4458_FORMATS,
582 },
583 .ops = &ak4458_dai_ops,
584 };
585
586 static struct snd_soc_dai_driver ak4497_dai = {
587 .name = "ak4497-aif",
588 .playback = {
589 .stream_name = "Playback",
590 .channels_min = 1,
591 .channels_max = 2,
592 .rates = SNDRV_PCM_RATE_KNOT,
593 .formats = AK4458_FORMATS,
594 },
595 .ops = &ak4458_dai_ops,
596 };
597
ak4458_reset(struct ak4458_priv * ak4458,bool active)598 static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
599 {
600 if (ak4458->reset_gpiod) {
601 gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
602 usleep_range(1000, 2000);
603 }
604 }
605
ak4458_init(struct snd_soc_component * component)606 static int ak4458_init(struct snd_soc_component *component)
607 {
608 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
609 int ret;
610
611 /* External Mute ON */
612 if (ak4458->mute_gpiod)
613 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
614
615 ak4458_reset(ak4458, false);
616
617 ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
618 0x80, 0x80); /* ACKS bit = 1; 10000000 */
619 if (ret < 0)
620 return ret;
621
622 if (ak4458->drvdata->type == AK4497) {
623 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
624 0x4, (ak4458->dsd_path << 2));
625 if (ret < 0)
626 return ret;
627 }
628
629 return ak4458_rstn_control(component, 1);
630 }
631
ak4458_probe(struct snd_soc_component * component)632 static int ak4458_probe(struct snd_soc_component *component)
633 {
634 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
635
636 ak4458->fs = 48000;
637
638 return ak4458_init(component);
639 }
640
ak4458_remove(struct snd_soc_component * component)641 static void ak4458_remove(struct snd_soc_component *component)
642 {
643 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
644
645 ak4458_reset(ak4458, true);
646 }
647
648 #ifdef CONFIG_PM
ak4458_runtime_suspend(struct device * dev)649 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
650 {
651 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
652
653 regcache_cache_only(ak4458->regmap, true);
654
655 ak4458_reset(ak4458, true);
656
657 if (ak4458->mute_gpiod)
658 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
659
660 regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
661 ak4458->supplies);
662 return 0;
663 }
664
ak4458_runtime_resume(struct device * dev)665 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
666 {
667 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
668 int ret;
669
670 ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
671 ak4458->supplies);
672 if (ret != 0) {
673 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
674 return ret;
675 }
676
677 if (ak4458->mute_gpiod)
678 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
679
680 ak4458_reset(ak4458, true);
681 ak4458_reset(ak4458, false);
682
683 regcache_cache_only(ak4458->regmap, false);
684 regcache_mark_dirty(ak4458->regmap);
685
686 return regcache_sync(ak4458->regmap);
687 }
688 #endif /* CONFIG_PM */
689
690 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
691 .probe = ak4458_probe,
692 .remove = ak4458_remove,
693 .controls = ak4458_snd_controls,
694 .num_controls = ARRAY_SIZE(ak4458_snd_controls),
695 .dapm_widgets = ak4458_dapm_widgets,
696 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets),
697 .dapm_routes = ak4458_intercon,
698 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon),
699 .idle_bias_on = 1,
700 .use_pmdown_time = 1,
701 .endianness = 1,
702 .non_legacy_dai_naming = 1,
703 };
704
705 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
706 .probe = ak4458_probe,
707 .remove = ak4458_remove,
708 .controls = ak4497_snd_controls,
709 .num_controls = ARRAY_SIZE(ak4497_snd_controls),
710 .dapm_widgets = ak4497_dapm_widgets,
711 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
712 .dapm_routes = ak4497_intercon,
713 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
714 .idle_bias_on = 1,
715 .use_pmdown_time = 1,
716 .endianness = 1,
717 .non_legacy_dai_naming = 1,
718 };
719
720 static const struct regmap_config ak4458_regmap = {
721 .reg_bits = 8,
722 .val_bits = 8,
723
724 .max_register = AK4458_14_R4CHATT,
725 .reg_defaults = ak4458_reg_defaults,
726 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
727 .cache_type = REGCACHE_RBTREE,
728 };
729
730 static const struct ak4458_drvdata ak4458_drvdata = {
731 .dai_drv = &ak4458_dai,
732 .comp_drv = &soc_codec_dev_ak4458,
733 .type = AK4458,
734 };
735
736 static const struct ak4458_drvdata ak4497_drvdata = {
737 .dai_drv = &ak4497_dai,
738 .comp_drv = &soc_codec_dev_ak4497,
739 .type = AK4497,
740 };
741
742 static const struct dev_pm_ops ak4458_pm = {
743 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
744 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
745 pm_runtime_force_resume)
746 };
747
ak4458_i2c_probe(struct i2c_client * i2c)748 static int ak4458_i2c_probe(struct i2c_client *i2c)
749 {
750 struct ak4458_priv *ak4458;
751 int ret, i;
752
753 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
754 if (!ak4458)
755 return -ENOMEM;
756
757 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
758 if (IS_ERR(ak4458->regmap))
759 return PTR_ERR(ak4458->regmap);
760
761 i2c_set_clientdata(i2c, ak4458);
762 ak4458->dev = &i2c->dev;
763
764 ak4458->drvdata = of_device_get_match_data(&i2c->dev);
765
766 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
767 GPIOD_OUT_LOW);
768 if (IS_ERR(ak4458->reset_gpiod))
769 return PTR_ERR(ak4458->reset_gpiod);
770
771 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
772 GPIOD_OUT_LOW);
773 if (IS_ERR(ak4458->mute_gpiod))
774 return PTR_ERR(ak4458->mute_gpiod);
775
776 /* Optional property for ak4497 */
777 of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
778
779 for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
780 ak4458->supplies[i].supply = ak4458_supply_names[i];
781
782 ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
783 ak4458->supplies);
784 if (ret != 0) {
785 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
786 return ret;
787 }
788
789 ret = devm_snd_soc_register_component(ak4458->dev,
790 ak4458->drvdata->comp_drv,
791 ak4458->drvdata->dai_drv, 1);
792 if (ret < 0) {
793 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
794 return ret;
795 }
796
797 pm_runtime_enable(&i2c->dev);
798 regcache_cache_only(ak4458->regmap, true);
799
800 return 0;
801 }
802
ak4458_i2c_remove(struct i2c_client * i2c)803 static int ak4458_i2c_remove(struct i2c_client *i2c)
804 {
805 pm_runtime_disable(&i2c->dev);
806
807 return 0;
808 }
809
810 static const struct of_device_id ak4458_of_match[] = {
811 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
812 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
813 { },
814 };
815 MODULE_DEVICE_TABLE(of, ak4458_of_match);
816
817 static struct i2c_driver ak4458_i2c_driver = {
818 .driver = {
819 .name = "ak4458",
820 .pm = &ak4458_pm,
821 .of_match_table = ak4458_of_match,
822 },
823 .probe_new = ak4458_i2c_probe,
824 .remove = ak4458_i2c_remove,
825 };
826
827 module_i2c_driver(ak4458_i2c_driver);
828
829 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
830 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
831 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
832 MODULE_LICENSE("GPL v2");
833