diff options
Diffstat (limited to 'sound/soc/codecs/ak4458.c')
| -rw-r--r-- | sound/soc/codecs/ak4458.c | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c new file mode 100644 index 000000000000..31ec0ba2e639 --- /dev/null +++ b/sound/soc/codecs/ak4458.c @@ -0,0 +1,657 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Audio driver for AK4458 DAC +// +// Copyright (C) 2016 Asahi Kasei Microdevices Corporation +// Copyright 2018 NXP + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <sound/initval.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> + +#include "ak4458.h" + +/* AK4458 Codec Private Data */ +struct ak4458_priv { + struct device *dev; + struct regmap *regmap; + struct gpio_desc *reset_gpiod; + struct gpio_desc *mute_gpiod; + int digfil; /* SSLOW, SD, SLOW bits */ + int fs; /* sampling rate */ + int fmt; + int slots; + int slot_width; +}; + +static const struct reg_default ak4458_reg_defaults[] = { + { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */ + { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */ + { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */ + { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */ + { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */ + { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */ + { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */ + { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */ + { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */ + { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */ + { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */ + { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */ + { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */ + { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */ + { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */ + { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */ + { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */ + { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */ + { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */ + { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */ + { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */ +}; + +/* + * Volume control: + * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB) + */ +static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); + +/* + * DEM1 bit DEM0 bit Mode + * 0 0 44.1kHz + * 0 1 OFF (default) + * 1 0 48kHz + * 1 1 32kHz + */ +static const char * const ak4458_dem_select_texts[] = { + "44.1kHz", "OFF", "48kHz", "32kHz" +}; + +/* + * SSLOW, SD, SLOW bits Digital Filter Setting + * 0, 0, 0 : Sharp Roll-Off Filter + * 0, 0, 1 : Slow Roll-Off Filter + * 0, 1, 0 : Short delay Sharp Roll-Off Filter + * 0, 1, 1 : Short delay Slow Roll-Off Filter + * 1, *, * : Super Slow Roll-Off Filter + */ +static const char * const ak4458_digfil_select_texts[] = { + "Sharp Roll-Off Filter", + "Slow Roll-Off Filter", + "Short delay Sharp Roll-Off Filter", + "Short delay Slow Roll-Off Filter", + "Super Slow Roll-Off Filter" +}; + +/* + * DZFB: Inverting Enable of DZF + * 0: DZF goes H at Zero Detection + * 1: DZF goes L at Zero Detection + */ +static const char * const ak4458_dzfb_select_texts[] = {"H", "L"}; + +/* + * SC1-0 bits: Sound Mode Setting + * 0 0 : Sound Mode 0 + * 0 1 : Sound Mode 1 + * 1 0 : Sound Mode 2 + * 1 1 : Reserved + */ +static const char * const ak4458_sc_select_texts[] = { + "Sound Mode 0", "Sound Mode 1", "Sound Mode 2" +}; + +/* FIR2-0 bits: FIR Filter Mode Setting */ +static const char * const ak4458_fir_select_texts[] = { + "Mode 0", "Mode 1", "Mode 2", "Mode 3", + "Mode 4", "Mode 5", "Mode 6", "Mode 7", +}; + +/* ATS1-0 bits Attenuation Speed */ +static const char * const ak4458_ats_select_texts[] = { + "4080/fs", "2040/fs", "510/fs", "255/fs", +}; + +/* DIF2 bit Audio Interface Format Setting(BICK fs) */ +static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",}; + +static const struct soc_enum ak4458_dac1_dem_enum = + SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1, + ARRAY_SIZE(ak4458_dem_select_texts), + ak4458_dem_select_texts); +static const struct soc_enum ak4458_dac2_dem_enum = + SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0, + ARRAY_SIZE(ak4458_dem_select_texts), + ak4458_dem_select_texts); +static const struct soc_enum ak4458_dac3_dem_enum = + SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4, + ARRAY_SIZE(ak4458_dem_select_texts), + ak4458_dem_select_texts); +static const struct soc_enum ak4458_dac4_dem_enum = + SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6, + ARRAY_SIZE(ak4458_dem_select_texts), + ak4458_dem_select_texts); +static const struct soc_enum ak4458_digfil_enum = + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts), + ak4458_digfil_select_texts); +static const struct soc_enum ak4458_dzfb_enum = + SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2, + ARRAY_SIZE(ak4458_dzfb_select_texts), + ak4458_dzfb_select_texts); +static const struct soc_enum ak4458_sm_enum = + SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0, + ARRAY_SIZE(ak4458_sc_select_texts), + ak4458_sc_select_texts); +static const struct soc_enum ak4458_fir_enum = + SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0, + ARRAY_SIZE(ak4458_fir_select_texts), + ak4458_fir_select_texts); +static const struct soc_enum ak4458_ats_enum = + SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6, + ARRAY_SIZE(ak4458_ats_select_texts), + ak4458_ats_select_texts); +static const struct soc_enum ak4458_dif_enum = + SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3, + ARRAY_SIZE(ak4458_dif_select_texts), + ak4458_dif_select_texts); + +static int get_digfil(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + + ucontrol->value.enumerated.item[0] = ak4458->digfil; + + return 0; +} + +static int set_digfil(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + int num; + + num = ucontrol->value.enumerated.item[0]; + if (num > 4) + return -EINVAL; + + ak4458->digfil = num; + + /* write SD bit */ + snd_soc_component_update_bits(component, AK4458_01_CONTROL2, + AK4458_SD_MASK, + ((ak4458->digfil & 0x02) << 4)); + + /* write SLOW bit */ + snd_soc_component_update_bits(component, AK4458_02_CONTROL3, + AK4458_SLOW_MASK, + (ak4458->digfil & 0x01)); + + /* write SSLOW bit */ + snd_soc_component_update_bits(component, AK4458_05_CONTROL4, + AK4458_SSLOW_MASK, + ((ak4458->digfil & 0x04) >> 2)); + + return 0; +} + +static const struct snd_kcontrol_new ak4458_snd_controls[] = { + SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT, + AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), + SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT, + AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv), + SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT, + AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv), + SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT, + AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv), + SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum), + SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum), + SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum), + SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum), + SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum, + get_digfil, set_digfil), + SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum), + SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum), + SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum), + SOC_ENUM("AK4458 Attenuation transition Time Setting", + ak4458_ats_enum), + SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum), +}; + +/* ak4458 dapm widgets */ +static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = { + SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/ + SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"), + + SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/ + SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"), + + SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/ + SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"), + + SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/ + SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"), +}; + +static const struct snd_soc_dapm_route ak4458_intercon[] = { + {"AK4458 DAC1", NULL, "AK4458 SDTI"}, + {"AK4458 AOUTA", NULL, "AK4458 DAC1"}, + + {"AK4458 DAC2", NULL, "AK4458 SDTI"}, + {"AK4458 AOUTB", NULL, "AK4458 DAC2"}, + + {"AK4458 DAC3", NULL, "AK4458 SDTI"}, + {"AK4458 AOUTC", NULL, "AK4458 DAC3"}, + + {"AK4458 DAC4", NULL, "AK4458 SDTI"}, + {"AK4458 AOUTD", NULL, "AK4458 DAC4"}, +}; + +static int ak4458_rstn_control(struct snd_soc_component *component, int bit) +{ + int ret; + + if (bit) + ret = snd_soc_component_update_bits(component, + AK4458_00_CONTROL1, + AK4458_RSTN_MASK, + 0x1); + else + ret = snd_soc_component_update_bits(component, + AK4458_00_CONTROL1, + AK4458_RSTN_MASK, + 0x0); + return ret; +} + +static int ak4458_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + int pcm_width = max(params_physical_width(params), ak4458->slot_width); + int nfs1; + u8 format; + + nfs1 = params_rate(params); + ak4458->fs = nfs1; + + /* Master Clock Frequency Auto Setting Mode Enable */ + snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80); + + switch (pcm_width) { + case 16: + if (ak4458->fmt == SND_SOC_DAIFMT_I2S) + format = AK4458_DIF_24BIT_I2S; + else + format = AK4458_DIF_16BIT_LSB; + break; + case 32: + switch (ak4458->fmt) { + case SND_SOC_DAIFMT_I2S: + format = AK4458_DIF_32BIT_I2S; + break; + case SND_SOC_DAIFMT_LEFT_J: + format = AK4458_DIF_32BIT_MSB; + break; + case SND_SOC_DAIFMT_RIGHT_J: + format = AK4458_DIF_32BIT_LSB; + break; + case SND_SOC_DAIFMT_DSP_B: + format = AK4458_DIF_32BIT_MSB; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + + snd_soc_component_update_bits(component, AK4458_00_CONTROL1, + AK4458_DIF_MASK, format); + + ak4458_rstn_control(component, 0); + ak4458_rstn_control(component, 1); + + return 0; +} + +static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component = dai->component; + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */ + break; + case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */ + case SND_SOC_DAIFMT_CBS_CFM: + case SND_SOC_DAIFMT_CBM_CFS: + default: + dev_err(component->dev, "Master mode unsupported\n"); + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + case SND_SOC_DAIFMT_LEFT_J: + case SND_SOC_DAIFMT_RIGHT_J: + case SND_SOC_DAIFMT_DSP_B: + ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + break; + default: + dev_err(component->dev, "Audio format 0x%02X unsupported\n", + fmt & SND_SOC_DAIFMT_FORMAT_MASK); + return -EINVAL; + } + + ak4458_rstn_control(component, 0); + ak4458_rstn_control(component, 1); + + return 0; +} + +static const int att_speed[] = { 4080, 2040, 510, 255 }; + +static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_component *component = dai->component; + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + int nfs, ndt, ret, reg; + int ats; + + nfs = ak4458->fs; + + reg = snd_soc_component_read32(component, AK4458_0B_CONTROL7); + ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT; + + ndt = att_speed[ats] / (nfs / 1000); + + if (mute) { + ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1); + mdelay(ndt); + if (ak4458->mute_gpiod) + gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); + } else { + if (ak4458->mute_gpiod) + gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); + ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0); + mdelay(ndt); + } + + return 0; +} + +static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, int slot_width) +{ + struct snd_soc_component *component = dai->component; + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + int mode; + + ak4458->slots = slots; + ak4458->slot_width = slot_width; + + switch (slots * slot_width) { + case 128: + mode = AK4458_MODE_TDM128; + break; + case 256: + mode = AK4458_MODE_TDM256; + break; + case 512: + mode = AK4458_MODE_TDM512; + break; + default: + mode = AK4458_MODE_NORMAL; + break; + } + + snd_soc_component_update_bits(component, AK4458_0A_CONTROL6, + AK4458_MODE_MASK, + mode); + + return 0; +} + +#define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE) + +static const unsigned int ak4458_rates[] = { + 8000, 11025, 16000, 22050, + 32000, 44100, 48000, 88200, + 96000, 176400, 192000, 352800, + 384000, 705600, 768000, 1411200, + 2822400, +}; + +static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = { + .count = ARRAY_SIZE(ak4458_rates), + .list = ak4458_rates, +}; + +static int ak4458_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + int ret; + + ret = snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &ak4458_rate_constraints); + + return ret; +} + +static struct snd_soc_dai_ops ak4458_dai_ops = { + .startup = ak4458_startup, + .hw_params = ak4458_hw_params, + .set_fmt = ak4458_set_dai_fmt, + .digital_mute = ak4458_set_dai_mute, + .set_tdm_slot = ak4458_set_tdm_slot, +}; + +static struct snd_soc_dai_driver ak4458_dai = { + .name = "ak4458-aif", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = AK4458_FORMATS, + }, + .ops = &ak4458_dai_ops, +}; + +static void ak4458_power_off(struct ak4458_priv *ak4458) +{ + if (ak4458->reset_gpiod) { + gpiod_set_value_cansleep(ak4458->reset_gpiod, 0); + usleep_range(1000, 2000); + } +} + +static void ak4458_power_on(struct ak4458_priv *ak4458) +{ + if (ak4458->reset_gpiod) { + gpiod_set_value_cansleep(ak4458->reset_gpiod, 1); + usleep_range(1000, 2000); + } +} + +static void ak4458_init(struct snd_soc_component *component) +{ + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + + /* External Mute ON */ + if (ak4458->mute_gpiod) + gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); + + ak4458_power_on(ak4458); + + snd_soc_component_update_bits(component, AK4458_00_CONTROL1, + 0x80, 0x80); /* ACKS bit = 1; 10000000 */ + + ak4458_rstn_control(component, 1); +} + +static int ak4458_probe(struct snd_soc_component *component) +{ + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + + ak4458_init(component); + + ak4458->fs = 48000; + + return 0; +} + +static void ak4458_remove(struct snd_soc_component *component) +{ + struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); + + ak4458_power_off(ak4458); +} + +#ifdef CONFIG_PM +static int __maybe_unused ak4458_runtime_suspend(struct device *dev) +{ + struct ak4458_priv *ak4458 = dev_get_drvdata(dev); + + regcache_cache_only(ak4458->regmap, true); + + ak4458_power_off(ak4458); + + if (ak4458->mute_gpiod) + gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); + + return 0; +} + +static int __maybe_unused ak4458_runtime_resume(struct device *dev) +{ + struct ak4458_priv *ak4458 = dev_get_drvdata(dev); + + if (ak4458->mute_gpiod) + gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); + + ak4458_power_off(ak4458); + ak4458_power_on(ak4458); + + regcache_cache_only(ak4458->regmap, false); + regcache_mark_dirty(ak4458->regmap); + + return regcache_sync(ak4458->regmap); +} +#endif /* CONFIG_PM */ + +struct snd_soc_component_driver soc_codec_dev_ak4458 = { + .probe = ak4458_probe, + .remove = ak4458_remove, + .controls = ak4458_snd_controls, + .num_controls = ARRAY_SIZE(ak4458_snd_controls), + .dapm_widgets = ak4458_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets), + .dapm_routes = ak4458_intercon, + .num_dapm_routes = ARRAY_SIZE(ak4458_intercon), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +static const struct regmap_config ak4458_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = AK4458_14_R4CHATT, + .reg_defaults = ak4458_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct dev_pm_ops ak4458_pm = { + SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static int ak4458_i2c_probe(struct i2c_client *i2c) +{ + struct ak4458_priv *ak4458; + int ret; + + ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL); + if (!ak4458) + return -ENOMEM; + + ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap); + if (IS_ERR(ak4458->regmap)) + return PTR_ERR(ak4458->regmap); + + i2c_set_clientdata(i2c, ak4458); + ak4458->dev = &i2c->dev; + + ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(ak4458->reset_gpiod)) + return PTR_ERR(ak4458->reset_gpiod); + + ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute", + GPIOD_OUT_LOW); + if (IS_ERR(ak4458->mute_gpiod)) + return PTR_ERR(ak4458->mute_gpiod); + + ret = devm_snd_soc_register_component(ak4458->dev, &soc_codec_dev_ak4458, + &ak4458_dai, 1); + if (ret < 0) { + dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret); + return ret; + } + + pm_runtime_enable(&i2c->dev); + + return 0; +} + +static int ak4458_i2c_remove(struct i2c_client *i2c) +{ + pm_runtime_disable(&i2c->dev); + + return 0; +} + +static const struct of_device_id ak4458_of_match[] = { + { .compatible = "asahi-kasei,ak4458", }, + { }, +}; + +static struct i2c_driver ak4458_i2c_driver = { + .driver = { + .name = "ak4458", + .pm = &ak4458_pm, + .of_match_table = ak4458_of_match, + }, + .probe_new = ak4458_i2c_probe, + .remove = ak4458_i2c_remove, +}; + +module_i2c_driver(ak4458_i2c_driver); + +MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>"); +MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>"); +MODULE_DESCRIPTION("ASoC AK4458 DAC driver"); +MODULE_LICENSE("GPL v2"); |