diff options
Diffstat (limited to 'sound/soc/codecs/ak4375.c')
| -rw-r--r-- | sound/soc/codecs/ak4375.c | 607 |
1 files changed, 607 insertions, 0 deletions
diff --git a/sound/soc/codecs/ak4375.c b/sound/soc/codecs/ak4375.c new file mode 100644 index 000000000000..573389e402f8 --- /dev/null +++ b/sound/soc/codecs/ak4375.c @@ -0,0 +1,607 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +/* + * Based on code by Hu Jin + * Copyright (C) 2014 Asahi Kasei Microdevices Corporation + */ + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> +#include <sound/soc.h> +#include <sound/tlv.h> + +/* Registers and fields */ +#define AK4375_00_POWER_MANAGEMENT1 0x00 +#define PMPLL BIT(0) /* 0: PLL off, 1: PLL on */ +#define AK4375_01_POWER_MANAGEMENT2 0x01 +#define PMCP1 BIT(0) /* Charge Pump 1: LDO1 and DAC */ +#define PMCP2 BIT(1) /* Charge Pump 2: Class-G HP Amp */ +#define PMLDO1P BIT(4) +#define PMLDO1N BIT(5) +#define PMLDO (PMLDO1P | PMLDO1N) +#define AK4375_02_POWER_MANAGEMENT3 0x02 +#define AK4375_03_POWER_MANAGEMENT4 0x03 +#define AK4375_04_OUTPUT_MODE_SETTING 0x04 +#define AK4375_05_CLOCK_MODE_SELECT 0x05 +#define FS_MASK GENMASK(4, 0) +#define FS_8KHZ 0x00 +#define FS_11_025KHZ 0x01 +#define FS_16KHZ 0x04 +#define FS_22_05KHZ 0x05 +#define FS_32KHZ 0x08 +#define FS_44_1KHZ 0x09 +#define FS_48KHZ 0x0a +#define FS_88_2KHZ 0x0d +#define FS_96KHZ 0x0e +#define FS_176_4KHZ 0x11 +#define FS_192KHZ 0x12 +#define CM_MASK GENMASK(6, 5) /* For SRC Bypass mode */ +#define CM_0 (0x0 << 5) +#define CM_1 (0x1 << 5) +#define CM_2 (0x2 << 5) +#define CM_3 (0x3 << 5) +#define AK4375_06_DIGITAL_FILTER_SELECT 0x06 +#define DADFSEL BIT(5) /* 0: in SRC Bypass mode, 1: in SRC mode */ +#define DASL BIT(6) +#define DASD BIT(7) +#define AK4375_07_DAC_MONO_MIXING 0x07 +#define DACMUTE_MASK (GENMASK(5, 4) | GENMASK(1, 0)) /* Clear to mute */ +#define AK4375_08_JITTER_CLEANER_SETTING1 0x08 +#define AK4375_09_JITTER_CLEANER_SETTING2 0x09 +#define AK4375_0A_JITTER_CLEANER_SETTING3 0x0a +#define SELDAIN BIT(1) /* 0: SRC Bypass mode, 1: SRC mode */ +#define XCKSEL BIT(6) /* 0: PLL0, 1: MCKI */ +#define XCKCPSEL BIT(7) /* Should be equal to SELDAIN and XCKSEL */ +#define AK4375_0B_LCH_OUTPUT_VOLUME 0x0b +#define AK4375_0C_RCH_OUTPUT_VOLUME 0x0c +#define AK4375_0D_HP_VOLUME_CONTROL 0x0d +#define AK4375_0E_PLL_CLK_SOURCE_SELECT 0x0e +#define PLS BIT(0) /* 0: MCKI, 1: BCLK */ +#define AK4375_0F_PLL_REF_CLK_DIVIDER1 0x0f /* Reference clock divider [15:8] bits */ +#define AK4375_10_PLL_REF_CLK_DIVIDER2 0x10 /* Reference clock divider [7:0] bis */ +#define AK4375_11_PLL_FB_CLK_DIVIDER1 0x11 /* Feedback clock divider [15:8] bits */ +#define AK4375_12_PLL_FB_CLK_DIVIDER2 0x12 /* Feedback clock divider [7:0] bits */ +#define AK4375_13_SRC_CLK_SOURCE 0x13 /* SRC Bypass: SRCCKS=XCKSEL=SELDAIN=0 */ +#define SRCCKS BIT(0) /* SRC Clock source 0: MCKI, 1: PLL0 */ +#define DIV BIT(4) +#define AK4375_14_DAC_CLK_DIVIDER 0x14 +#define AK4375_15_AUDIO_IF_FORMAT 0x15 +#define DEVICEID_MASK GENMASK(7, 5) +#define AK4375_24_MODE_CONTROL 0x24 + +#define AK4375_PLL_FREQ_OUT_112896000 112896000 /* 44.1 kHz base rate */ +#define AK4375_PLL_FREQ_OUT_122880000 122880000 /* 32 and 48 kHz base rates */ + +#define DEVICEID_AK4375 0x00 +#define DEVICEID_AK4375A 0x01 +#define DEVICEID_AK4376A 0x02 +#define DEVICEID_AK4377 0x03 +#define DEVICEID_AK4331 0x07 + +static const char * const supply_names[] = { + "avdd", "tvdd" +}; + +struct ak4375_drvdata { + struct snd_soc_dai_driver *dai_drv; + const struct snd_soc_component_driver *comp_drv; +}; + +struct ak4375_priv { + struct device *dev; + struct regmap *regmap; + struct gpio_desc *pdn_gpiod; + struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; + unsigned int rate; + unsigned int pld; + u8 mute_save; +}; + +static const struct reg_default ak4375_reg_defaults[] = { + { 0x00, 0x00 }, { 0x01, 0x00 }, { 0x02, 0x00 }, + { 0x03, 0x00 }, { 0x04, 0x00 }, { 0x05, 0x00 }, + { 0x06, 0x00 }, { 0x07, 0x00 }, { 0x08, 0x00 }, + { 0x09, 0x00 }, { 0x0a, 0x00 }, { 0x0b, 0x19 }, + { 0x0c, 0x19 }, { 0x0d, 0x75 }, { 0x0e, 0x01 }, + { 0x0f, 0x00 }, { 0x10, 0x00 }, { 0x11, 0x00 }, + { 0x12, 0x00 }, { 0x13, 0x00 }, { 0x14, 0x00 }, + { 0x15, 0x00 }, { 0x24, 0x00 }, +}; + +/* + * Output Digital volume control: + * from -12.5 to 3 dB in 0.5 dB steps (mute instead of -12.5 dB) + */ +static DECLARE_TLV_DB_SCALE(dac_tlv, -1250, 50, 0); + +/* + * HP-Amp Analog volume control: + * from -4.2 to 6 dB in 2 dB steps (mute instead of -4.2 dB) + */ +static DECLARE_TLV_DB_SCALE(hpg_tlv, -4200, 20, 0); + +static const char * const ak4375_ovolcn_select_texts[] = { "Dependent", "Independent" }; +static const char * const ak4375_mdac_select_texts[] = { "x1", "x1/2" }; +static const char * const ak4375_cpmode_select_texts[] = { + "Automatic Switching", + "+-VDD Operation", + "+-1/2VDD Operation" +}; + +/* + * DASD, DASL bits Digital Filter Setting + * 0, 0 : Sharp Roll-Off Filter + * 0, 1 : Slow Roll-Off Filter + * 1, 0 : Short delay Sharp Roll-Off Filter + * 1, 1 : Short delay Slow Roll-Off Filter + */ +static const char * const ak4375_digfil_select_texts[] = { + "Sharp Roll-Off Filter", + "Slow Roll-Off Filter", + "Short delay Sharp Roll-Off Filter", + "Short delay Slow Roll-Off Filter", +}; + +static const struct soc_enum ak4375_ovolcn_enum = + SOC_ENUM_SINGLE(AK4375_0B_LCH_OUTPUT_VOLUME, 7, + ARRAY_SIZE(ak4375_ovolcn_select_texts), ak4375_ovolcn_select_texts); +static const struct soc_enum ak4375_mdacl_enum = + SOC_ENUM_SINGLE(AK4375_07_DAC_MONO_MIXING, 2, + ARRAY_SIZE(ak4375_mdac_select_texts), ak4375_mdac_select_texts); +static const struct soc_enum ak4375_mdacr_enum = + SOC_ENUM_SINGLE(AK4375_07_DAC_MONO_MIXING, 6, + ARRAY_SIZE(ak4375_mdac_select_texts), ak4375_mdac_select_texts); +static const struct soc_enum ak4375_cpmode_enum = + SOC_ENUM_SINGLE(AK4375_03_POWER_MANAGEMENT4, 2, + ARRAY_SIZE(ak4375_cpmode_select_texts), ak4375_cpmode_select_texts); +static const struct soc_enum ak4375_digfil_enum = + SOC_ENUM_SINGLE(AK4375_06_DIGITAL_FILTER_SELECT, 6, + ARRAY_SIZE(ak4375_digfil_select_texts), ak4375_digfil_select_texts); + +static const struct snd_kcontrol_new ak4375_snd_controls[] = { + SOC_DOUBLE_R_TLV("Digital Output Volume", AK4375_0B_LCH_OUTPUT_VOLUME, + AK4375_0C_RCH_OUTPUT_VOLUME, 0, 0x1f, 0, dac_tlv), + SOC_SINGLE_TLV("HP-Amp Analog Volume", + AK4375_0D_HP_VOLUME_CONTROL, 0, 0x1f, 0, hpg_tlv), + + SOC_DOUBLE("DAC Signal Invert Switch", AK4375_07_DAC_MONO_MIXING, 3, 7, 1, 0), + + SOC_ENUM("Digital Volume Control", ak4375_ovolcn_enum), + SOC_ENUM("DACL Signal Level", ak4375_mdacl_enum), + SOC_ENUM("DACR Signal Level", ak4375_mdacr_enum), + SOC_ENUM("Charge Pump Mode", ak4375_cpmode_enum), + SOC_ENUM("DAC Digital Filter Mode", ak4375_digfil_enum), +}; + +static const struct snd_kcontrol_new ak4375_hpl_mixer_controls[] = { + SOC_DAPM_SINGLE("LDACL Switch", AK4375_07_DAC_MONO_MIXING, 0, 1, 0), + SOC_DAPM_SINGLE("RDACL Switch", AK4375_07_DAC_MONO_MIXING, 1, 1, 0), +}; + +static const struct snd_kcontrol_new ak4375_hpr_mixer_controls[] = { + SOC_DAPM_SINGLE("LDACR Switch", AK4375_07_DAC_MONO_MIXING, 4, 1, 0), + SOC_DAPM_SINGLE("RDACR Switch", AK4375_07_DAC_MONO_MIXING, 5, 1, 0), +}; + +static int ak4375_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_component_update_bits(component, AK4375_00_POWER_MANAGEMENT1, PMPLL, PMPLL); + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMCP1, PMCP1); + usleep_range(6500, 7000); + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMLDO, PMLDO); + usleep_range(1000, 2000); + break; + case SND_SOC_DAPM_POST_PMU: + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMCP2, PMCP2); + usleep_range(4500, 5000); + break; + case SND_SOC_DAPM_PRE_PMD: + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMCP2, 0x0); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMLDO, 0x0); + snd_soc_component_update_bits(component, AK4375_01_POWER_MANAGEMENT2, PMCP1, 0x0); + snd_soc_component_update_bits(component, AK4375_00_POWER_MANAGEMENT1, PMPLL, 0x0); + break; + } + + return 0; +} + +static const struct snd_soc_dapm_widget ak4375_dapm_widgets[] = { + SND_SOC_DAPM_DAC_E("DAC", NULL, AK4375_02_POWER_MANAGEMENT3, 0, 0, ak4375_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_AIF_IN("SDTI", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), + + SND_SOC_DAPM_OUTPUT("HPL"), + SND_SOC_DAPM_OUTPUT("HPR"), + + SND_SOC_DAPM_MIXER("HPR Mixer", AK4375_03_POWER_MANAGEMENT4, 1, 0, + &ak4375_hpr_mixer_controls[0], ARRAY_SIZE(ak4375_hpr_mixer_controls)), + SND_SOC_DAPM_MIXER("HPL Mixer", AK4375_03_POWER_MANAGEMENT4, 0, 0, + &ak4375_hpl_mixer_controls[0], ARRAY_SIZE(ak4375_hpl_mixer_controls)), +}; + +static const struct snd_soc_dapm_route ak4375_intercon[] = { + { "DAC", NULL, "SDTI" }, + + { "HPL Mixer", "LDACL Switch", "DAC" }, + { "HPL Mixer", "RDACL Switch", "DAC" }, + { "HPR Mixer", "LDACR Switch", "DAC" }, + { "HPR Mixer", "RDACR Switch", "DAC" }, + + { "HPL", NULL, "HPL Mixer" }, + { "HPR", NULL, "HPR Mixer" }, +}; + +static int ak4375_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 ak4375_priv *ak4375 = snd_soc_component_get_drvdata(component); + unsigned int freq_in, freq_out; + + ak4375->rate = params_rate(params); + + if (ak4375->rate <= 96000) + ak4375->pld = 0; + else + ak4375->pld = 1; + + freq_in = 32 * ak4375->rate / (ak4375->pld + 1); + + if ((ak4375->rate % 8000) == 0) + freq_out = AK4375_PLL_FREQ_OUT_122880000; + else + freq_out = AK4375_PLL_FREQ_OUT_112896000; + + return snd_soc_dai_set_pll(dai, 0, 0, freq_in, freq_out); +} + +static int ak4375_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, + unsigned int freq_in, unsigned int freq_out) +{ + struct snd_soc_component *component = dai->component; + struct ak4375_priv *ak4375 = snd_soc_component_get_drvdata(component); + unsigned int mclk, plm, mdiv, div; + u8 cms, fs, cm; + + cms = snd_soc_component_read(component, AK4375_05_CLOCK_MODE_SELECT); + fs = cms & ~FS_MASK; + cm = cms & ~CM_MASK; + + switch (ak4375->rate) { + case 8000: + fs |= FS_8KHZ; + break; + case 11025: + fs |= FS_11_025KHZ; + break; + case 16000: + fs |= FS_16KHZ; + break; + case 22050: + fs |= FS_22_05KHZ; + break; + case 32000: + fs |= FS_32KHZ; + break; + case 44100: + fs |= FS_44_1KHZ; + break; + case 48000: + fs |= FS_48KHZ; + break; + case 88200: + fs |= FS_88_2KHZ; + break; + case 96000: + fs |= FS_96KHZ; + break; + case 176400: + fs |= FS_176_4KHZ; + break; + case 192000: + fs |= FS_192KHZ; + break; + default: + return -EINVAL; + } + + if (ak4375->rate <= 24000) { + cm |= CM_1; + mclk = 512 * ak4375->rate; + mdiv = freq_out / mclk - 1; + div = 0; + } else if (ak4375->rate <= 96000) { + cm |= CM_0; + mclk = 256 * ak4375->rate; + mdiv = freq_out / mclk - 1; + div = 0; + } else { + cm |= CM_3; + mclk = 128 * ak4375->rate; + mdiv = 4; + div = 1; + } + + /* Writing both fields in one go seems to make playback choppy on start */ + snd_soc_component_update_bits(component, AK4375_05_CLOCK_MODE_SELECT, FS_MASK, fs); + snd_soc_component_update_bits(component, AK4375_05_CLOCK_MODE_SELECT, CM_MASK, cm); + + snd_soc_component_write(component, AK4375_0F_PLL_REF_CLK_DIVIDER1, + (ak4375->pld & 0xff00) >> 8); + snd_soc_component_write(component, AK4375_10_PLL_REF_CLK_DIVIDER2, + ak4375->pld & 0x00ff); + + plm = freq_out / freq_in - 1; + snd_soc_component_write(component, AK4375_11_PLL_FB_CLK_DIVIDER1, (plm & 0xff00) >> 8); + snd_soc_component_write(component, AK4375_12_PLL_FB_CLK_DIVIDER2, plm & 0x00ff); + + snd_soc_component_update_bits(component, AK4375_13_SRC_CLK_SOURCE, DIV, div); + + /* SRCCKS bit: force to 1 for SRC PLL source clock */ + snd_soc_component_update_bits(component, AK4375_13_SRC_CLK_SOURCE, SRCCKS, SRCCKS); + + snd_soc_component_write(component, AK4375_14_DAC_CLK_DIVIDER, mdiv); + + dev_dbg(ak4375->dev, "rate=%d mclk=%d f_in=%d f_out=%d PLD=%d PLM=%d MDIV=%d DIV=%d\n", + ak4375->rate, mclk, freq_in, freq_out, ak4375->pld, plm, mdiv, div); + + return 0; +} + +static int ak4375_mute(struct snd_soc_dai *dai, int mute, int direction) +{ + struct snd_soc_component *component = dai->component; + struct ak4375_priv *ak4375 = snd_soc_component_get_drvdata(component); + u8 val = snd_soc_component_read(component, AK4375_07_DAC_MONO_MIXING); + + dev_dbg(ak4375->dev, "mute=%d val=%d\n", mute, val); + + if (mute) { + ak4375->mute_save = val & DACMUTE_MASK; + val &= ~DACMUTE_MASK; + } else { + val |= ak4375->mute_save; + } + + snd_soc_component_write(component, AK4375_07_DAC_MONO_MIXING, val); + + return 0; +} + +#define AK4375_RATES (SNDRV_PCM_RATE_8000_48000 |\ + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |\ + SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000) + +#define AK4375_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE) + +static const struct snd_soc_dai_ops ak4375_dai_ops = { + .hw_params = ak4375_hw_params, + .mute_stream = ak4375_mute, + .set_pll = ak4375_dai_set_pll, +}; + +static struct snd_soc_dai_driver ak4375_dai = { + .name = "ak4375-hifi", + .playback = { + .stream_name = "HiFi Playback", + .channels_min = 1, + .channels_max = 2, + .rates = AK4375_RATES, + .rate_min = 8000, + .rate_max = 192000, + .formats = AK4375_FORMATS, + }, + .ops = &ak4375_dai_ops, +}; + +static void ak4375_power_off(struct ak4375_priv *ak4375) +{ + gpiod_set_value_cansleep(ak4375->pdn_gpiod, 0); + usleep_range(1000, 2000); + + regulator_bulk_disable(ARRAY_SIZE(ak4375->supplies), ak4375->supplies); +} + +static int ak4375_power_on(struct ak4375_priv *ak4375) +{ + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(ak4375->supplies), ak4375->supplies); + if (ret < 0) { + dev_err(ak4375->dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + + usleep_range(3000, 4000); + + gpiod_set_value_cansleep(ak4375->pdn_gpiod, 1); + usleep_range(1000, 2000); + + return 0; +} + +static int __maybe_unused ak4375_runtime_suspend(struct device *dev) +{ + struct ak4375_priv *ak4375 = dev_get_drvdata(dev); + + regcache_cache_only(ak4375->regmap, true); + ak4375_power_off(ak4375); + + return 0; +} + +static int __maybe_unused ak4375_runtime_resume(struct device *dev) +{ + struct ak4375_priv *ak4375 = dev_get_drvdata(dev); + int ret; + + ret = ak4375_power_on(ak4375); + if (ret < 0) + return ret; + + regcache_cache_only(ak4375->regmap, false); + regcache_mark_dirty(ak4375->regmap); + + return regcache_sync(ak4375->regmap); +} + +static const struct snd_soc_component_driver soc_codec_dev_ak4375 = { + .controls = ak4375_snd_controls, + .num_controls = ARRAY_SIZE(ak4375_snd_controls), + .dapm_widgets = ak4375_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ak4375_dapm_widgets), + .dapm_routes = ak4375_intercon, + .num_dapm_routes = ARRAY_SIZE(ak4375_intercon), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static const struct regmap_config ak4375_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = AK4375_24_MODE_CONTROL, + .reg_defaults = ak4375_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(ak4375_reg_defaults), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct ak4375_drvdata ak4375_drvdata = { + .dai_drv = &ak4375_dai, + .comp_drv = &soc_codec_dev_ak4375, +}; + +static const struct dev_pm_ops ak4375_pm = { + SET_RUNTIME_PM_OPS(ak4375_runtime_suspend, ak4375_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static int ak4375_i2c_probe(struct i2c_client *i2c) +{ + struct ak4375_priv *ak4375; + const struct ak4375_drvdata *drvdata; + unsigned int deviceid; + int ret, i; + + ak4375 = devm_kzalloc(&i2c->dev, sizeof(*ak4375), GFP_KERNEL); + if (!ak4375) + return -ENOMEM; + + ak4375->regmap = devm_regmap_init_i2c(i2c, &ak4375_regmap); + if (IS_ERR(ak4375->regmap)) + return PTR_ERR(ak4375->regmap); + + i2c_set_clientdata(i2c, ak4375); + ak4375->dev = &i2c->dev; + + drvdata = of_device_get_match_data(&i2c->dev); + + for (i = 0; i < ARRAY_SIZE(supply_names); i++) + ak4375->supplies[i].supply = supply_names[i]; + + ret = devm_regulator_bulk_get(ak4375->dev, ARRAY_SIZE(ak4375->supplies), ak4375->supplies); + if (ret < 0) { + dev_err(ak4375->dev, "Failed to get regulators: %d\n", ret); + return ret; + } + + ak4375->pdn_gpiod = devm_gpiod_get_optional(ak4375->dev, "pdn", GPIOD_OUT_LOW); + if (IS_ERR(ak4375->pdn_gpiod)) + return dev_err_probe(ak4375->dev, PTR_ERR(ak4375->pdn_gpiod), + "failed to get pdn\n"); + + ret = ak4375_power_on(ak4375); + if (ret < 0) + return ret; + + /* Don't read deviceid from cache */ + regcache_cache_bypass(ak4375->regmap, true); + + ret = regmap_read(ak4375->regmap, AK4375_15_AUDIO_IF_FORMAT, &deviceid); + if (ret < 0) { + dev_err(ak4375->dev, "unable to read DEVICEID!\n"); + return ret; + } + + regcache_cache_bypass(ak4375->regmap, false); + + deviceid = (deviceid & DEVICEID_MASK) >> 5; + + switch (deviceid) { + case DEVICEID_AK4331: + dev_err(ak4375->dev, "found untested AK4331\n"); + return -EINVAL; + case DEVICEID_AK4375: + dev_dbg(ak4375->dev, "found AK4375\n"); + break; + case DEVICEID_AK4375A: + dev_dbg(ak4375->dev, "found AK4375A\n"); + break; + case DEVICEID_AK4376A: + dev_err(ak4375->dev, "found unsupported AK4376/A!\n"); + return -EINVAL; + case DEVICEID_AK4377: + dev_err(ak4375->dev, "found unsupported AK4377!\n"); + return -EINVAL; + default: + dev_err(ak4375->dev, "unrecognized DEVICEID!\n"); + return -EINVAL; + } + + pm_runtime_set_active(ak4375->dev); + pm_runtime_enable(ak4375->dev); + + ret = devm_snd_soc_register_component(ak4375->dev, drvdata->comp_drv, + drvdata->dai_drv, 1); + if (ret < 0) { + dev_err(ak4375->dev, "Failed to register CODEC: %d\n", ret); + return ret; + } + + return 0; +} + +static void ak4375_i2c_remove(struct i2c_client *i2c) +{ + pm_runtime_disable(&i2c->dev); +} + +static const struct of_device_id ak4375_of_match[] = { + { .compatible = "asahi-kasei,ak4375", .data = &ak4375_drvdata }, + { }, +}; +MODULE_DEVICE_TABLE(of, ak4375_of_match); + +static struct i2c_driver ak4375_i2c_driver = { + .driver = { + .name = "ak4375", + .pm = &ak4375_pm, + .of_match_table = ak4375_of_match, + }, + .probe_new = ak4375_i2c_probe, + .remove = ak4375_i2c_remove, +}; +module_i2c_driver(ak4375_i2c_driver); + +MODULE_AUTHOR("Vincent Knecht <vincent.knecht@mailoo.org>"); +MODULE_DESCRIPTION("ASoC AK4375 DAC driver"); +MODULE_LICENSE("GPL"); |