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- // 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/regulator/consumer.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"
- #define AK4458_NUM_SUPPLIES 2
- static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = {
- "DVDD",
- "AVDD",
- };
- enum ak4458_type {
- AK4458 = 0,
- AK4497 = 1,
- };
- struct ak4458_drvdata {
- struct snd_soc_dai_driver *dai_drv;
- const struct snd_soc_component_driver *comp_drv;
- enum ak4458_type type;
- };
- /* AK4458 Codec Private Data */
- struct ak4458_priv {
- struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES];
- const struct ak4458_drvdata *drvdata;
- 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;
- u32 dsd_path; /* For ak4497 */
- };
- 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"},
- };
- /* ak4497 controls */
- static const struct snd_kcontrol_new ak4497_snd_controls[] = {
- SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
- AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
- SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
- SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
- get_digfil, set_digfil),
- SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
- SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
- SOC_ENUM("AK4497 Attenuation transition Time Setting",
- ak4458_ats_enum),
- };
- /* ak4497 dapm widgets */
- static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
- SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
- SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
- };
- /* ak4497 dapm routes */
- static const struct snd_soc_dapm_route ak4497_intercon[] = {
- {"AK4497 DAC", NULL, "AK4497 SDTI"},
- {"AK4497 AOUT", NULL, "AK4497 DAC"},
- };
- static int ak4458_get_tdm_mode(struct ak4458_priv *ak4458)
- {
- switch (ak4458->slots * ak4458->slot_width) {
- case 128:
- return 1;
- case 256:
- return 2;
- case 512:
- return 3;
- default:
- return 0;
- }
- }
- 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);
- if (ret < 0)
- return ret;
- return 0;
- }
- 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);
- u8 format, dsdsel0, dsdsel1, dchn;
- int nfs1, dsd_bclk, ret, channels, channels_max;
- nfs1 = params_rate(params);
- ak4458->fs = nfs1;
- /* calculate bit clock */
- channels = params_channels(params);
- channels_max = dai->driver->playback.channels_max;
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_DSD_U8:
- case SNDRV_PCM_FORMAT_DSD_U16_LE:
- case SNDRV_PCM_FORMAT_DSD_U16_BE:
- case SNDRV_PCM_FORMAT_DSD_U32_LE:
- case SNDRV_PCM_FORMAT_DSD_U32_BE:
- dsd_bclk = nfs1 * params_physical_width(params);
- switch (dsd_bclk) {
- case 2822400:
- dsdsel0 = 0;
- dsdsel1 = 0;
- break;
- case 5644800:
- dsdsel0 = 1;
- dsdsel1 = 0;
- break;
- case 11289600:
- dsdsel0 = 0;
- dsdsel1 = 1;
- break;
- case 22579200:
- if (ak4458->drvdata->type == AK4497) {
- dsdsel0 = 1;
- dsdsel1 = 1;
- } else {
- dev_err(dai->dev, "DSD512 not supported.\n");
- return -EINVAL;
- }
- break;
- default:
- dev_err(dai->dev, "Unsupported dsd bclk.\n");
- return -EINVAL;
- }
- snd_soc_component_update_bits(component, AK4458_06_DSD1,
- AK4458_DSDSEL_MASK, dsdsel0);
- snd_soc_component_update_bits(component, AK4458_09_DSD2,
- AK4458_DSDSEL_MASK, dsdsel1);
- break;
- }
- /* 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;
- case SND_SOC_DAIFMT_PDM:
- 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);
- /*
- * Enable/disable Daisy Chain if in TDM mode and the number of played
- * channels is bigger than the maximum supported number of channels
- */
- dchn = ak4458_get_tdm_mode(ak4458) &&
- (ak4458->fmt == SND_SOC_DAIFMT_DSP_B) &&
- (channels > channels_max) ? AK4458_DCHAIN_MASK : 0;
- snd_soc_component_update_bits(component, AK4458_0B_CONTROL7,
- AK4458_DCHAIN_MASK, dchn);
- if (ak4458->drvdata->type == AK4497) {
- ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
- 0x4, (ak4458->dsd_path << 2));
- if (ret < 0)
- return ret;
- }
- ret = ak4458_rstn_control(component, 0);
- if (ret)
- return ret;
- ret = ak4458_rstn_control(component, 1);
- if (ret)
- return ret;
- 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);
- int ret;
- switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
- case SND_SOC_DAIFMT_CBC_CFC: /* Consumer Mode */
- break;
- case SND_SOC_DAIFMT_CBP_CFP: /* Provider Mode is not supported */
- case SND_SOC_DAIFMT_CBC_CFP:
- case SND_SOC_DAIFMT_CBP_CFC:
- default:
- dev_err(component->dev, "Clock provider 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:
- case SND_SOC_DAIFMT_PDM:
- 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;
- }
- /* DSD mode */
- snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
- AK4458_DP_MASK,
- ak4458->fmt == SND_SOC_DAIFMT_PDM ?
- AK4458_DP_MASK : 0);
- ret = ak4458_rstn_control(component, 0);
- if (ret)
- return ret;
- ret = ak4458_rstn_control(component, 1);
- if (ret)
- return ret;
- return 0;
- }
- static const int att_speed[] = { 4080, 2040, 510, 255 };
- static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
- {
- struct snd_soc_component *component = dai->component;
- struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
- int nfs, ndt, reg;
- int ats;
- nfs = ak4458->fs;
- reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
- ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
- ndt = att_speed[ats] / (nfs / 1000);
- if (mute) {
- 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);
- 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;
- mode = ak4458_get_tdm_mode(ak4458) << AK4458_MODE_SHIFT;
- 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 |\
- SNDRV_PCM_FMTBIT_DSD_U8 |\
- SNDRV_PCM_FMTBIT_DSD_U16_LE |\
- SNDRV_PCM_FMTBIT_DSD_U32_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 const struct snd_soc_dai_ops ak4458_dai_ops = {
- .startup = ak4458_startup,
- .hw_params = ak4458_hw_params,
- .set_fmt = ak4458_set_dai_fmt,
- .mute_stream = ak4458_set_dai_mute,
- .set_tdm_slot = ak4458_set_tdm_slot,
- .no_capture_mute = 1,
- };
- 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 struct snd_soc_dai_driver ak4497_dai = {
- .name = "ak4497-aif",
- .playback = {
- .stream_name = "Playback",
- .channels_min = 1,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_KNOT,
- .formats = AK4458_FORMATS,
- },
- .ops = &ak4458_dai_ops,
- };
- static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
- {
- if (ak4458->reset_gpiod) {
- gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
- usleep_range(1000, 2000);
- }
- }
- #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_reset(ak4458, true);
- if (ak4458->mute_gpiod)
- gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
- regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
- ak4458->supplies);
- return 0;
- }
- static int __maybe_unused ak4458_runtime_resume(struct device *dev)
- {
- struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
- int ret;
- ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
- ak4458->supplies);
- if (ret != 0) {
- dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
- return ret;
- }
- if (ak4458->mute_gpiod)
- gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
- ak4458_reset(ak4458, true);
- ak4458_reset(ak4458, false);
- regcache_cache_only(ak4458->regmap, false);
- regcache_mark_dirty(ak4458->regmap);
- return regcache_sync(ak4458->regmap);
- }
- #endif /* CONFIG_PM */
- static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
- .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,
- };
- static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
- .controls = ak4497_snd_controls,
- .num_controls = ARRAY_SIZE(ak4497_snd_controls),
- .dapm_widgets = ak4497_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
- .dapm_routes = ak4497_intercon,
- .num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
- .idle_bias_on = 1,
- .use_pmdown_time = 1,
- .endianness = 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 ak4458_drvdata ak4458_drvdata = {
- .dai_drv = &ak4458_dai,
- .comp_drv = &soc_codec_dev_ak4458,
- .type = AK4458,
- };
- static const struct ak4458_drvdata ak4497_drvdata = {
- .dai_drv = &ak4497_dai,
- .comp_drv = &soc_codec_dev_ak4497,
- .type = AK4497,
- };
- 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, i;
- 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->drvdata = of_device_get_match_data(&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);
- /* Optional property for ak4497 */
- of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
- for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
- ak4458->supplies[i].supply = ak4458_supply_names[i];
- ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
- ak4458->supplies);
- if (ret != 0) {
- dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
- return ret;
- }
- ret = devm_snd_soc_register_component(ak4458->dev,
- ak4458->drvdata->comp_drv,
- ak4458->drvdata->dai_drv, 1);
- if (ret < 0) {
- dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
- return ret;
- }
- pm_runtime_enable(&i2c->dev);
- regcache_cache_only(ak4458->regmap, true);
- ak4458_reset(ak4458, false);
- return 0;
- }
- static void ak4458_i2c_remove(struct i2c_client *i2c)
- {
- struct ak4458_priv *ak4458 = i2c_get_clientdata(i2c);
- ak4458_reset(ak4458, true);
- pm_runtime_disable(&i2c->dev);
- }
- static const struct of_device_id ak4458_of_match[] = {
- { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
- { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
- { },
- };
- MODULE_DEVICE_TABLE(of, ak4458_of_match);
- 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 <[email protected]>");
- MODULE_AUTHOR("Mihai Serban <[email protected]>");
- MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
- MODULE_LICENSE("GPL v2");
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