1 // SPDX-License-Identifier: GPL-2.0
3 // Audio driver for AK4458 DAC
5 // Copyright (C) 2016 Asahi Kasei Microdevices Corporation
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/slab.h>
16 #include <sound/initval.h>
17 #include <sound/pcm_params.h>
18 #include <sound/soc.h>
19 #include <sound/soc-dapm.h>
20 #include <sound/tlv.h>
24 struct ak4458_drvdata {
25 struct snd_soc_dai_driver *dai_drv;
26 const struct snd_soc_component_driver *comp_drv;
29 /* AK4458 Codec Private Data */
32 struct regmap *regmap;
33 struct gpio_desc *reset_gpiod;
34 struct gpio_desc *mute_gpiod;
35 int digfil; /* SSLOW, SD, SLOW bits */
36 int fs; /* sampling rate */
42 static const struct reg_default ak4458_reg_defaults[] = {
43 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */
44 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */
45 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */
46 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */
47 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */
48 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */
49 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */
50 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */
51 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */
52 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */
53 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */
54 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */
55 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */
56 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */
57 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */
58 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */
59 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */
60 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */
61 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */
62 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */
63 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */
68 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
70 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
73 * DEM1 bit DEM0 bit Mode
79 static const char * const ak4458_dem_select_texts[] = {
80 "44.1kHz", "OFF", "48kHz", "32kHz"
84 * SSLOW, SD, SLOW bits Digital Filter Setting
85 * 0, 0, 0 : Sharp Roll-Off Filter
86 * 0, 0, 1 : Slow Roll-Off Filter
87 * 0, 1, 0 : Short delay Sharp Roll-Off Filter
88 * 0, 1, 1 : Short delay Slow Roll-Off Filter
89 * 1, *, * : Super Slow Roll-Off Filter
91 static const char * const ak4458_digfil_select_texts[] = {
92 "Sharp Roll-Off Filter",
93 "Slow Roll-Off Filter",
94 "Short delay Sharp Roll-Off Filter",
95 "Short delay Slow Roll-Off Filter",
96 "Super Slow Roll-Off Filter"
100 * DZFB: Inverting Enable of DZF
101 * 0: DZF goes H at Zero Detection
102 * 1: DZF goes L at Zero Detection
104 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
107 * SC1-0 bits: Sound Mode Setting
113 static const char * const ak4458_sc_select_texts[] = {
114 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
117 /* FIR2-0 bits: FIR Filter Mode Setting */
118 static const char * const ak4458_fir_select_texts[] = {
119 "Mode 0", "Mode 1", "Mode 2", "Mode 3",
120 "Mode 4", "Mode 5", "Mode 6", "Mode 7",
123 /* ATS1-0 bits Attenuation Speed */
124 static const char * const ak4458_ats_select_texts[] = {
125 "4080/fs", "2040/fs", "510/fs", "255/fs",
128 /* DIF2 bit Audio Interface Format Setting(BICK fs) */
129 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
131 static const struct soc_enum ak4458_dac1_dem_enum =
132 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
133 ARRAY_SIZE(ak4458_dem_select_texts),
134 ak4458_dem_select_texts);
135 static const struct soc_enum ak4458_dac2_dem_enum =
136 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
137 ARRAY_SIZE(ak4458_dem_select_texts),
138 ak4458_dem_select_texts);
139 static const struct soc_enum ak4458_dac3_dem_enum =
140 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
141 ARRAY_SIZE(ak4458_dem_select_texts),
142 ak4458_dem_select_texts);
143 static const struct soc_enum ak4458_dac4_dem_enum =
144 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
145 ARRAY_SIZE(ak4458_dem_select_texts),
146 ak4458_dem_select_texts);
147 static const struct soc_enum ak4458_digfil_enum =
148 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
149 ak4458_digfil_select_texts);
150 static const struct soc_enum ak4458_dzfb_enum =
151 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
152 ARRAY_SIZE(ak4458_dzfb_select_texts),
153 ak4458_dzfb_select_texts);
154 static const struct soc_enum ak4458_sm_enum =
155 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
156 ARRAY_SIZE(ak4458_sc_select_texts),
157 ak4458_sc_select_texts);
158 static const struct soc_enum ak4458_fir_enum =
159 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
160 ARRAY_SIZE(ak4458_fir_select_texts),
161 ak4458_fir_select_texts);
162 static const struct soc_enum ak4458_ats_enum =
163 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
164 ARRAY_SIZE(ak4458_ats_select_texts),
165 ak4458_ats_select_texts);
166 static const struct soc_enum ak4458_dif_enum =
167 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
168 ARRAY_SIZE(ak4458_dif_select_texts),
169 ak4458_dif_select_texts);
171 static int get_digfil(struct snd_kcontrol *kcontrol,
172 struct snd_ctl_elem_value *ucontrol)
174 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
175 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
177 ucontrol->value.enumerated.item[0] = ak4458->digfil;
182 static int set_digfil(struct snd_kcontrol *kcontrol,
183 struct snd_ctl_elem_value *ucontrol)
185 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
186 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
189 num = ucontrol->value.enumerated.item[0];
193 ak4458->digfil = num;
196 snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
198 ((ak4458->digfil & 0x02) << 4));
201 snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
203 (ak4458->digfil & 0x01));
205 /* write SSLOW bit */
206 snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
208 ((ak4458->digfil & 0x04) >> 2));
213 static const struct snd_kcontrol_new ak4458_snd_controls[] = {
214 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
215 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
216 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
217 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
218 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
219 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
220 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
221 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
222 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
223 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
224 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
225 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
226 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
227 get_digfil, set_digfil),
228 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
229 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
230 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
231 SOC_ENUM("AK4458 Attenuation transition Time Setting",
233 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
236 /* ak4458 dapm widgets */
237 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
238 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
239 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
240 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
242 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
243 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
245 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
246 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
248 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
249 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
252 static const struct snd_soc_dapm_route ak4458_intercon[] = {
253 {"AK4458 DAC1", NULL, "AK4458 SDTI"},
254 {"AK4458 AOUTA", NULL, "AK4458 DAC1"},
256 {"AK4458 DAC2", NULL, "AK4458 SDTI"},
257 {"AK4458 AOUTB", NULL, "AK4458 DAC2"},
259 {"AK4458 DAC3", NULL, "AK4458 SDTI"},
260 {"AK4458 AOUTC", NULL, "AK4458 DAC3"},
262 {"AK4458 DAC4", NULL, "AK4458 SDTI"},
263 {"AK4458 AOUTD", NULL, "AK4458 DAC4"},
266 /* ak4497 controls */
267 static const struct snd_kcontrol_new ak4497_snd_controls[] = {
268 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
269 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
270 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
271 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
272 get_digfil, set_digfil),
273 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
274 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
275 SOC_ENUM("AK4497 Attenuation transition Time Setting",
279 /* ak4497 dapm widgets */
280 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
281 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
282 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
283 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
286 /* ak4497 dapm routes */
287 static const struct snd_soc_dapm_route ak4497_intercon[] = {
288 {"AK4497 DAC", NULL, "AK4497 SDTI"},
289 {"AK4497 AOUT", NULL, "AK4497 DAC"},
293 static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
298 ret = snd_soc_component_update_bits(component,
303 ret = snd_soc_component_update_bits(component,
313 static int ak4458_hw_params(struct snd_pcm_substream *substream,
314 struct snd_pcm_hw_params *params,
315 struct snd_soc_dai *dai)
317 struct snd_soc_component *component = dai->component;
318 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
319 int pcm_width = max(params_physical_width(params), ak4458->slot_width);
323 nfs1 = params_rate(params);
326 /* Master Clock Frequency Auto Setting Mode Enable */
327 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
331 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
332 format = AK4458_DIF_24BIT_I2S;
334 format = AK4458_DIF_16BIT_LSB;
337 switch (ak4458->fmt) {
338 case SND_SOC_DAIFMT_I2S:
339 format = AK4458_DIF_32BIT_I2S;
341 case SND_SOC_DAIFMT_LEFT_J:
342 format = AK4458_DIF_32BIT_MSB;
344 case SND_SOC_DAIFMT_RIGHT_J:
345 format = AK4458_DIF_32BIT_LSB;
347 case SND_SOC_DAIFMT_DSP_B:
348 format = AK4458_DIF_32BIT_MSB;
358 snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
359 AK4458_DIF_MASK, format);
361 ak4458_rstn_control(component, 0);
362 ak4458_rstn_control(component, 1);
367 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
369 struct snd_soc_component *component = dai->component;
370 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
372 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
373 case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
375 case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
376 case SND_SOC_DAIFMT_CBS_CFM:
377 case SND_SOC_DAIFMT_CBM_CFS:
379 dev_err(component->dev, "Master mode unsupported\n");
383 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
384 case SND_SOC_DAIFMT_I2S:
385 case SND_SOC_DAIFMT_LEFT_J:
386 case SND_SOC_DAIFMT_RIGHT_J:
387 case SND_SOC_DAIFMT_DSP_B:
388 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
391 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
392 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
396 ak4458_rstn_control(component, 0);
397 ak4458_rstn_control(component, 1);
402 static const int att_speed[] = { 4080, 2040, 510, 255 };
404 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute)
406 struct snd_soc_component *component = dai->component;
407 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
408 int nfs, ndt, ret, reg;
413 reg = snd_soc_component_read32(component, AK4458_0B_CONTROL7);
414 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
416 ndt = att_speed[ats] / (nfs / 1000);
419 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1);
421 if (ak4458->mute_gpiod)
422 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
424 if (ak4458->mute_gpiod)
425 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
426 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
433 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
434 unsigned int rx_mask, int slots, int slot_width)
436 struct snd_soc_component *component = dai->component;
437 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
440 ak4458->slots = slots;
441 ak4458->slot_width = slot_width;
443 switch (slots * slot_width) {
445 mode = AK4458_MODE_TDM128;
448 mode = AK4458_MODE_TDM256;
451 mode = AK4458_MODE_TDM512;
454 mode = AK4458_MODE_NORMAL;
458 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
465 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
466 SNDRV_PCM_FMTBIT_S24_LE |\
467 SNDRV_PCM_FMTBIT_S32_LE)
469 static const unsigned int ak4458_rates[] = {
470 8000, 11025, 16000, 22050,
471 32000, 44100, 48000, 88200,
472 96000, 176400, 192000, 352800,
473 384000, 705600, 768000, 1411200,
477 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
478 .count = ARRAY_SIZE(ak4458_rates),
479 .list = ak4458_rates,
482 static int ak4458_startup(struct snd_pcm_substream *substream,
483 struct snd_soc_dai *dai)
487 ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
488 SNDRV_PCM_HW_PARAM_RATE,
489 &ak4458_rate_constraints);
494 static const struct snd_soc_dai_ops ak4458_dai_ops = {
495 .startup = ak4458_startup,
496 .hw_params = ak4458_hw_params,
497 .set_fmt = ak4458_set_dai_fmt,
498 .digital_mute = ak4458_set_dai_mute,
499 .set_tdm_slot = ak4458_set_tdm_slot,
502 static struct snd_soc_dai_driver ak4458_dai = {
503 .name = "ak4458-aif",
505 .stream_name = "Playback",
508 .rates = SNDRV_PCM_RATE_KNOT,
509 .formats = AK4458_FORMATS,
511 .ops = &ak4458_dai_ops,
514 static struct snd_soc_dai_driver ak4497_dai = {
515 .name = "ak4497-aif",
517 .stream_name = "Playback",
520 .rates = SNDRV_PCM_RATE_KNOT,
521 .formats = AK4458_FORMATS,
523 .ops = &ak4458_dai_ops,
526 static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
528 if (ak4458->reset_gpiod) {
529 gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
530 usleep_range(1000, 2000);
534 static int ak4458_init(struct snd_soc_component *component)
536 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
539 /* External Mute ON */
540 if (ak4458->mute_gpiod)
541 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
543 ak4458_reset(ak4458, false);
545 ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
546 0x80, 0x80); /* ACKS bit = 1; 10000000 */
550 return ak4458_rstn_control(component, 1);
553 static int ak4458_probe(struct snd_soc_component *component)
555 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
559 return ak4458_init(component);
562 static void ak4458_remove(struct snd_soc_component *component)
564 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
566 ak4458_reset(ak4458, true);
570 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
572 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
574 regcache_cache_only(ak4458->regmap, true);
576 ak4458_reset(ak4458, true);
578 if (ak4458->mute_gpiod)
579 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
584 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
586 struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
588 if (ak4458->mute_gpiod)
589 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
591 ak4458_reset(ak4458, true);
592 ak4458_reset(ak4458, false);
594 regcache_cache_only(ak4458->regmap, false);
595 regcache_mark_dirty(ak4458->regmap);
597 return regcache_sync(ak4458->regmap);
599 #endif /* CONFIG_PM */
601 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
602 .probe = ak4458_probe,
603 .remove = ak4458_remove,
604 .controls = ak4458_snd_controls,
605 .num_controls = ARRAY_SIZE(ak4458_snd_controls),
606 .dapm_widgets = ak4458_dapm_widgets,
607 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets),
608 .dapm_routes = ak4458_intercon,
609 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon),
611 .use_pmdown_time = 1,
613 .non_legacy_dai_naming = 1,
616 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
617 .probe = ak4458_probe,
618 .remove = ak4458_remove,
619 .controls = ak4497_snd_controls,
620 .num_controls = ARRAY_SIZE(ak4497_snd_controls),
621 .dapm_widgets = ak4497_dapm_widgets,
622 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
623 .dapm_routes = ak4497_intercon,
624 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
626 .use_pmdown_time = 1,
628 .non_legacy_dai_naming = 1,
631 static const struct regmap_config ak4458_regmap = {
635 .max_register = AK4458_14_R4CHATT,
636 .reg_defaults = ak4458_reg_defaults,
637 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
638 .cache_type = REGCACHE_RBTREE,
641 static const struct ak4458_drvdata ak4458_drvdata = {
642 .dai_drv = &ak4458_dai,
643 .comp_drv = &soc_codec_dev_ak4458,
646 static const struct ak4458_drvdata ak4497_drvdata = {
647 .dai_drv = &ak4497_dai,
648 .comp_drv = &soc_codec_dev_ak4497,
651 static const struct dev_pm_ops ak4458_pm = {
652 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
653 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
654 pm_runtime_force_resume)
657 static int ak4458_i2c_probe(struct i2c_client *i2c)
659 struct ak4458_priv *ak4458;
660 const struct ak4458_drvdata *drvdata;
663 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
667 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
668 if (IS_ERR(ak4458->regmap))
669 return PTR_ERR(ak4458->regmap);
671 i2c_set_clientdata(i2c, ak4458);
672 ak4458->dev = &i2c->dev;
674 drvdata = of_device_get_match_data(&i2c->dev);
676 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
678 if (IS_ERR(ak4458->reset_gpiod))
679 return PTR_ERR(ak4458->reset_gpiod);
681 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
683 if (IS_ERR(ak4458->mute_gpiod))
684 return PTR_ERR(ak4458->mute_gpiod);
686 ret = devm_snd_soc_register_component(ak4458->dev, drvdata->comp_drv,
687 drvdata->dai_drv, 1);
689 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
693 pm_runtime_enable(&i2c->dev);
698 static int ak4458_i2c_remove(struct i2c_client *i2c)
700 pm_runtime_disable(&i2c->dev);
705 static const struct of_device_id ak4458_of_match[] = {
706 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
707 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
710 MODULE_DEVICE_TABLE(of, ak4458_of_match);
712 static struct i2c_driver ak4458_i2c_driver = {
716 .of_match_table = ak4458_of_match,
718 .probe_new = ak4458_i2c_probe,
719 .remove = ak4458_i2c_remove,
722 module_i2c_driver(ak4458_i2c_driver);
724 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
725 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
726 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
727 MODULE_LICENSE("GPL v2");