// SPDX-License-Identifier: GPL-2.0-only /* * cs42l51.c * * ASoC Driver for Cirrus Logic CS42L51 codecs * * Copyright (c) 2010 Arnaud Patard * * Based on cs4270.c - Copyright (c) Freescale Semiconductor * * For now: * - Only I2C is support. Not SPI * - master mode *NOT* supported */ #include #include #include #include #include #include #include #include #include #include #include #include #include "cs42l51.h" enum master_slave_mode { MODE_SLAVE, MODE_SLAVE_AUTO, MODE_MASTER, }; static const char * const cs42l51_supply_names[] = { "VL", "VD", "VA", "VAHP", }; struct cs42l51_private { unsigned int mclk; struct clk *mclk_handle; unsigned int audio_mode; /* The mode (I2S or left-justified) */ enum master_slave_mode func; struct regulator_bulk_data supplies[ARRAY_SIZE(cs42l51_supply_names)]; struct gpio_desc *reset_gpio; struct regmap *regmap; }; #define CS42L51_FORMATS ( \ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \ SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); unsigned long value = snd_soc_component_read(component, CS42L51_PCM_MIXER)&3; switch (value) { default: case 0: ucontrol->value.enumerated.item[0] = 0; break; /* same value : (L+R)/2 and (R+L)/2 */ case 1: case 2: ucontrol->value.enumerated.item[0] = 1; break; case 3: ucontrol->value.enumerated.item[0] = 2; break; } return 0; } #define CHAN_MIX_NORMAL 0x00 #define CHAN_MIX_BOTH 0x55 #define CHAN_MIX_SWAP 0xFF static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); unsigned char val; switch (ucontrol->value.enumerated.item[0]) { default: case 0: val = CHAN_MIX_NORMAL; break; case 1: val = CHAN_MIX_BOTH; break; case 2: val = CHAN_MIX_SWAP; break; } snd_soc_component_write(component, CS42L51_PCM_MIXER, val); return 1; } static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0); static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0); static const DECLARE_TLV_DB_SCALE(aout_tlv, -10200, 50, 0); static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0); static const DECLARE_TLV_DB_SCALE(adc_boost_tlv, 2000, 2000, 0); static const char *chan_mix[] = { "L R", "L+R", "R L", }; static const DECLARE_TLV_DB_SCALE(pga_tlv, -300, 50, 0); static const DECLARE_TLV_DB_SCALE(adc_att_tlv, -9600, 100, 0); static SOC_ENUM_SINGLE_EXT_DECL(cs42l51_chan_mix, chan_mix); static const struct snd_kcontrol_new cs42l51_snd_controls[] = { SOC_DOUBLE_R_SX_TLV("PCM Playback Volume", CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 0, 0x19, 0x7F, adc_pcm_tlv), SOC_DOUBLE_R("PCM Playback Switch", CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1), SOC_DOUBLE_R_SX_TLV("Analog Playback Volume", CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL, 0, 0x34, 0xE4, aout_tlv), SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume", CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 0, 0x19, 0x7F, adc_pcm_tlv), SOC_DOUBLE_R("ADC Mixer Switch", CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1), SOC_DOUBLE_R_SX_TLV("ADC Attenuator Volume", CS42L51_ADCA_ATT, CS42L51_ADCB_ATT, 0, 0xA0, 96, adc_att_tlv), SOC_DOUBLE_R_SX_TLV("PGA Volume", CS42L51_ALC_PGA_CTL, CS42L51_ALC_PGB_CTL, 0, 0x1A, 30, pga_tlv), SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0), SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0), SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0), SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0), SOC_DOUBLE_TLV("Mic Boost Volume", CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv), SOC_DOUBLE_TLV("ADC Boost Volume", CS42L51_MIC_CTL, 5, 6, 1, 0, adc_boost_tlv), SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv), SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv), SOC_ENUM_EXT("PCM channel mixer", cs42l51_chan_mix, cs42l51_get_chan_mix, cs42l51_set_chan_mix), }; /* * to power down, one must: * 1.) Enable the PDN bit * 2.) enable power-down for the select channels * 3.) disable the PDN bit. */ static int cs42l51_pdn_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_PMD: snd_soc_component_update_bits(component, CS42L51_POWER_CTL1, CS42L51_POWER_CTL1_PDN, CS42L51_POWER_CTL1_PDN); break; default: case SND_SOC_DAPM_POST_PMD: snd_soc_component_update_bits(component, CS42L51_POWER_CTL1, CS42L51_POWER_CTL1_PDN, 0); break; } return 0; } static const char *cs42l51_dac_names[] = {"Direct PCM", "DSP PCM", "ADC"}; static SOC_ENUM_SINGLE_DECL(cs42l51_dac_mux_enum, CS42L51_DAC_CTL, 6, cs42l51_dac_names); static const struct snd_kcontrol_new cs42l51_dac_mux_controls = SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum); static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left", "MIC Left", "MIC+preamp Left"}; static SOC_ENUM_SINGLE_DECL(cs42l51_adcl_mux_enum, CS42L51_ADC_INPUT, 4, cs42l51_adcl_names); static const struct snd_kcontrol_new cs42l51_adcl_mux_controls = SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum); static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right", "MIC Right", "MIC+preamp Right"}; static SOC_ENUM_SINGLE_DECL(cs42l51_adcr_mux_enum, CS42L51_ADC_INPUT, 6, cs42l51_adcr_names); static const struct snd_kcontrol_new cs42l51_adcr_mux_controls = SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum); static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1, NULL, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture", CS42L51_POWER_CTL1, 1, 1, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture", CS42L51_POWER_CTL1, 2, 1, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), SND_SOC_DAPM_DAC_E("Left DAC", NULL, CS42L51_POWER_CTL1, 5, 1, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), SND_SOC_DAPM_DAC_E("Right DAC", NULL, CS42L51_POWER_CTL1, 6, 1, cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), /* analog/mic */ SND_SOC_DAPM_INPUT("AIN1L"), SND_SOC_DAPM_INPUT("AIN1R"), SND_SOC_DAPM_INPUT("AIN2L"), SND_SOC_DAPM_INPUT("AIN2R"), SND_SOC_DAPM_INPUT("MICL"), SND_SOC_DAPM_INPUT("MICR"), SND_SOC_DAPM_MIXER("Mic Preamp Left", CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0), SND_SOC_DAPM_MIXER("Mic Preamp Right", CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0), /* HP */ SND_SOC_DAPM_OUTPUT("HPL"), SND_SOC_DAPM_OUTPUT("HPR"), /* mux */ SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0, &cs42l51_dac_mux_controls), SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0, &cs42l51_adcl_mux_controls), SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0, &cs42l51_adcr_mux_controls), }; static int mclk_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm); struct cs42l51_private *cs42l51 = snd_soc_component_get_drvdata(comp); switch (event) { case SND_SOC_DAPM_PRE_PMU: return clk_prepare_enable(cs42l51->mclk_handle); case SND_SOC_DAPM_POST_PMD: /* Delay mclk shutdown to fulfill power-down sequence requirements */ msleep(20); clk_disable_unprepare(cs42l51->mclk_handle); break; } return 0; } static const struct snd_soc_dapm_widget cs42l51_dapm_mclk_widgets[] = { SND_SOC_DAPM_SUPPLY("MCLK", SND_SOC_NOPM, 0, 0, mclk_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), }; static const struct snd_soc_dapm_route cs42l51_routes[] = { {"HPL", NULL, "Left DAC"}, {"HPR", NULL, "Right DAC"}, {"Right DAC", NULL, "DAC Mux"}, {"Left DAC", NULL, "DAC Mux"}, {"DAC Mux", "Direct PCM", "Playback"}, {"DAC Mux", "DSP PCM", "Playback"}, {"Left ADC", NULL, "Left PGA"}, {"Right ADC", NULL, "Right PGA"}, {"Mic Preamp Left", NULL, "MICL"}, {"Mic Preamp Right", NULL, "MICR"}, {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" }, {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" }, {"PGA-ADC Mux Left", "MIC Left", "MICL" }, {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" }, {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" }, {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" }, {"PGA-ADC Mux Right", "MIC Right", "MICR" }, {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" }, {"Left PGA", NULL, "PGA-ADC Mux Left"}, {"Right PGA", NULL, "PGA-ADC Mux Right"}, }; static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { struct snd_soc_component *component = codec_dai->component; struct cs42l51_private *cs42l51 = snd_soc_component_get_drvdata(component); switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: case SND_SOC_DAIFMT_LEFT_J: case SND_SOC_DAIFMT_RIGHT_J: cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK; break; default: dev_err(component->dev, "invalid DAI format\n"); return -EINVAL; } switch (format & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: cs42l51->func = MODE_MASTER; break; case SND_SOC_DAIFMT_CBS_CFS: cs42l51->func = MODE_SLAVE_AUTO; break; default: dev_err(component->dev, "Unknown master/slave configuration\n"); return -EINVAL; } return 0; } struct cs42l51_ratios { unsigned int ratio; unsigned char speed_mode; unsigned char mclk; }; static struct cs42l51_ratios slave_ratios[] = { { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 }, { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 }, { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 }, { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 }, { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 }, { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 }, { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 }, }; static struct cs42l51_ratios slave_auto_ratios[] = { { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 }, { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 }, { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 }, { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 }, }; /* * Master mode mclk/fs ratios. * Recommended configurations are SSM for 4-50khz and DSM for 50-100kHz ranges * The table below provides support of following ratios: * 128: SSM (%128) with div2 disabled * 256: SSM (%128) with div2 enabled * In both cases, if sampling rate is above 50kHz, SSM is overridden * with DSM (%128) configuration */ static struct cs42l51_ratios master_ratios[] = { { 128, CS42L51_SSM_MODE, 0 }, { 256, CS42L51_SSM_MODE, 1 }, }; static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_component *component = codec_dai->component; struct cs42l51_private *cs42l51 = snd_soc_component_get_drvdata(component); cs42l51->mclk = freq; return 0; } static int cs42l51_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 cs42l51_private *cs42l51 = snd_soc_component_get_drvdata(component); int ret; unsigned int i; unsigned int rate; unsigned int ratio; struct cs42l51_ratios *ratios = NULL; int nr_ratios = 0; int intf_ctl, power_ctl, fmt, mode; switch (cs42l51->func) { case MODE_MASTER: ratios = master_ratios; nr_ratios = ARRAY_SIZE(master_ratios); break; case MODE_SLAVE: ratios = slave_ratios; nr_ratios = ARRAY_SIZE(slave_ratios); break; case MODE_SLAVE_AUTO: ratios = slave_auto_ratios; nr_ratios = ARRAY_SIZE(slave_auto_ratios); break; } /* Figure out which MCLK/LRCK ratio to use */ rate = params_rate(params); /* Sampling rate, in Hz */ ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */ for (i = 0; i < nr_ratios; i++) { if (ratios[i].ratio == ratio) break; } if (i == nr_ratios) { /* We did not find a matching ratio */ dev_err(component->dev, "could not find matching ratio\n"); return -EINVAL; } intf_ctl = snd_soc_component_read(component, CS42L51_INTF_CTL); power_ctl = snd_soc_component_read(component, CS42L51_MIC_POWER_CTL); intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S | CS42L51_INTF_CTL_DAC_FORMAT(7)); power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3) | CS42L51_MIC_POWER_CTL_MCLK_DIV2); switch (cs42l51->func) { case MODE_MASTER: intf_ctl |= CS42L51_INTF_CTL_MASTER; mode = ratios[i].speed_mode; /* Force DSM mode if sampling rate is above 50kHz */ if (rate > 50000) mode = CS42L51_DSM_MODE; power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(mode); /* * Auto detect mode is not applicable for master mode and has to * be disabled. Otherwise SPEED[1:0] bits will be ignored. */ power_ctl &= ~CS42L51_MIC_POWER_CTL_AUTO; break; case MODE_SLAVE: power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode); break; case MODE_SLAVE_AUTO: power_ctl |= CS42L51_MIC_POWER_CTL_AUTO; break; } switch (cs42l51->audio_mode) { case SND_SOC_DAIFMT_I2S: intf_ctl |= CS42L51_INTF_CTL_ADC_I2S; intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S); break; case SND_SOC_DAIFMT_LEFT_J: intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24); break; case SND_SOC_DAIFMT_RIGHT_J: switch (params_width(params)) { case 16: fmt = CS42L51_DAC_DIF_RJ16; break; case 18: fmt = CS42L51_DAC_DIF_RJ18; break; case 20: fmt = CS42L51_DAC_DIF_RJ20; break; case 24: fmt = CS42L51_DAC_DIF_RJ24; break; default: dev_err(component->dev, "unknown format\n"); return -EINVAL; } intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt); break; default: dev_err(component->dev, "unknown format\n"); return -EINVAL; } if (ratios[i].mclk) power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2; ret = snd_soc_component_write(component, CS42L51_INTF_CTL, intf_ctl); if (ret < 0) return ret; ret = snd_soc_component_write(component, CS42L51_MIC_POWER_CTL, power_ctl); if (ret < 0) return ret; return 0; } static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute, int direction) { struct snd_soc_component *component = dai->component; int reg; int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE; reg = snd_soc_component_read(component, CS42L51_DAC_OUT_CTL); if (mute) reg |= mask; else reg &= ~mask; return snd_soc_component_write(component, CS42L51_DAC_OUT_CTL, reg); } static int cs42l51_of_xlate_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { /* return dai id 0, whatever the endpoint index */ return 0; } static const struct snd_soc_dai_ops cs42l51_dai_ops = { .hw_params = cs42l51_hw_params, .set_sysclk = cs42l51_set_dai_sysclk, .set_fmt = cs42l51_set_dai_fmt, .mute_stream = cs42l51_dai_mute, .no_capture_mute = 1, }; static struct snd_soc_dai_driver cs42l51_dai = { .name = "cs42l51-hifi", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_96000, .formats = CS42L51_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_96000, .formats = CS42L51_FORMATS, }, .ops = &cs42l51_dai_ops, }; static int cs42l51_component_probe(struct snd_soc_component *component) { int ret, reg; struct snd_soc_dapm_context *dapm; struct cs42l51_private *cs42l51; cs42l51 = snd_soc_component_get_drvdata(component); dapm = snd_soc_component_get_dapm(component); if (cs42l51->mclk_handle) snd_soc_dapm_new_controls(dapm, cs42l51_dapm_mclk_widgets, 1); /* * DAC configuration * - Use signal processor * - auto mute * - vol changes immediate * - no de-emphasize */ reg = CS42L51_DAC_CTL_DATA_SEL(1) | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0); ret = snd_soc_component_write(component, CS42L51_DAC_CTL, reg); if (ret < 0) return ret; return 0; } static const struct snd_soc_component_driver soc_component_device_cs42l51 = { .probe = cs42l51_component_probe, .controls = cs42l51_snd_controls, .num_controls = ARRAY_SIZE(cs42l51_snd_controls), .dapm_widgets = cs42l51_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(cs42l51_dapm_widgets), .dapm_routes = cs42l51_routes, .num_dapm_routes = ARRAY_SIZE(cs42l51_routes), .of_xlate_dai_id = cs42l51_of_xlate_dai_id, .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, .non_legacy_dai_naming = 1, }; static bool cs42l51_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { case CS42L51_POWER_CTL1: case CS42L51_MIC_POWER_CTL: case CS42L51_INTF_CTL: case CS42L51_MIC_CTL: case CS42L51_ADC_CTL: case CS42L51_ADC_INPUT: case CS42L51_DAC_OUT_CTL: case CS42L51_DAC_CTL: case CS42L51_ALC_PGA_CTL: case CS42L51_ALC_PGB_CTL: case CS42L51_ADCA_ATT: case CS42L51_ADCB_ATT: case CS42L51_ADCA_VOL: case CS42L51_ADCB_VOL: case CS42L51_PCMA_VOL: case CS42L51_PCMB_VOL: case CS42L51_BEEP_FREQ: case CS42L51_BEEP_VOL: case CS42L51_BEEP_CONF: case CS42L51_TONE_CTL: case CS42L51_AOUTA_VOL: case CS42L51_AOUTB_VOL: case CS42L51_PCM_MIXER: case CS42L51_LIMIT_THRES_DIS: case CS42L51_LIMIT_REL: case CS42L51_LIMIT_ATT: case CS42L51_ALC_EN: case CS42L51_ALC_REL: case CS42L51_ALC_THRES: case CS42L51_NOISE_CONF: case CS42L51_CHARGE_FREQ: return true; default: return false; } } static bool cs42l51_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case CS42L51_STATUS: return true; default: return false; } } static bool cs42l51_readable_reg(struct device *dev, unsigned int reg) { switch (reg) { case CS42L51_CHIP_REV_ID: case CS42L51_POWER_CTL1: case CS42L51_MIC_POWER_CTL: case CS42L51_INTF_CTL: case CS42L51_MIC_CTL: case CS42L51_ADC_CTL: case CS42L51_ADC_INPUT: case CS42L51_DAC_OUT_CTL: case CS42L51_DAC_CTL: case CS42L51_ALC_PGA_CTL: case CS42L51_ALC_PGB_CTL: case CS42L51_ADCA_ATT: case CS42L51_ADCB_ATT: case CS42L51_ADCA_VOL: case CS42L51_ADCB_VOL: case CS42L51_PCMA_VOL: case CS42L51_PCMB_VOL: case CS42L51_BEEP_FREQ: case CS42L51_BEEP_VOL: case CS42L51_BEEP_CONF: case CS42L51_TONE_CTL: case CS42L51_AOUTA_VOL: case CS42L51_AOUTB_VOL: case CS42L51_PCM_MIXER: case CS42L51_LIMIT_THRES_DIS: case CS42L51_LIMIT_REL: case CS42L51_LIMIT_ATT: case CS42L51_ALC_EN: case CS42L51_ALC_REL: case CS42L51_ALC_THRES: case CS42L51_NOISE_CONF: case CS42L51_STATUS: case CS42L51_CHARGE_FREQ: return true; default: return false; } } const struct regmap_config cs42l51_regmap = { .reg_bits = 8, .reg_stride = 1, .val_bits = 8, .use_single_write = true, .readable_reg = cs42l51_readable_reg, .volatile_reg = cs42l51_volatile_reg, .writeable_reg = cs42l51_writeable_reg, .max_register = CS42L51_CHARGE_FREQ, .cache_type = REGCACHE_RBTREE, }; EXPORT_SYMBOL_GPL(cs42l51_regmap); int cs42l51_probe(struct device *dev, struct regmap *regmap) { struct cs42l51_private *cs42l51; unsigned int val; int ret, i; if (IS_ERR(regmap)) return PTR_ERR(regmap); cs42l51 = devm_kzalloc(dev, sizeof(struct cs42l51_private), GFP_KERNEL); if (!cs42l51) return -ENOMEM; dev_set_drvdata(dev, cs42l51); cs42l51->regmap = regmap; cs42l51->mclk_handle = devm_clk_get(dev, "MCLK"); if (IS_ERR(cs42l51->mclk_handle)) { if (PTR_ERR(cs42l51->mclk_handle) != -ENOENT) return PTR_ERR(cs42l51->mclk_handle); cs42l51->mclk_handle = NULL; } for (i = 0; i < ARRAY_SIZE(cs42l51->supplies); i++) cs42l51->supplies[i].supply = cs42l51_supply_names[i]; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(cs42l51->supplies), cs42l51->supplies); if (ret != 0) { dev_err(dev, "Failed to request supplies: %d\n", ret); return ret; } ret = regulator_bulk_enable(ARRAY_SIZE(cs42l51->supplies), cs42l51->supplies); if (ret != 0) { dev_err(dev, "Failed to enable supplies: %d\n", ret); return ret; } cs42l51->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(cs42l51->reset_gpio)) return PTR_ERR(cs42l51->reset_gpio); if (cs42l51->reset_gpio) { dev_dbg(dev, "Release reset gpio\n"); gpiod_set_value_cansleep(cs42l51->reset_gpio, 0); mdelay(2); } /* Verify that we have a CS42L51 */ ret = regmap_read(regmap, CS42L51_CHIP_REV_ID, &val); if (ret < 0) { dev_err(dev, "failed to read I2C\n"); goto error; } if ((val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) && (val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) { dev_err(dev, "Invalid chip id: %x\n", val); ret = -ENODEV; goto error; } dev_info(dev, "Cirrus Logic CS42L51, Revision: %02X\n", val & CS42L51_CHIP_REV_MASK); ret = devm_snd_soc_register_component(dev, &soc_component_device_cs42l51, &cs42l51_dai, 1); if (ret < 0) goto error; return 0; error: regulator_bulk_disable(ARRAY_SIZE(cs42l51->supplies), cs42l51->supplies); return ret; } EXPORT_SYMBOL_GPL(cs42l51_probe); int cs42l51_remove(struct device *dev) { struct cs42l51_private *cs42l51 = dev_get_drvdata(dev); gpiod_set_value_cansleep(cs42l51->reset_gpio, 1); return regulator_bulk_disable(ARRAY_SIZE(cs42l51->supplies), cs42l51->supplies); } EXPORT_SYMBOL_GPL(cs42l51_remove); int __maybe_unused cs42l51_suspend(struct device *dev) { struct cs42l51_private *cs42l51 = dev_get_drvdata(dev); regcache_cache_only(cs42l51->regmap, true); regcache_mark_dirty(cs42l51->regmap); return 0; } EXPORT_SYMBOL_GPL(cs42l51_suspend); int __maybe_unused cs42l51_resume(struct device *dev) { struct cs42l51_private *cs42l51 = dev_get_drvdata(dev); regcache_cache_only(cs42l51->regmap, false); return regcache_sync(cs42l51->regmap); } EXPORT_SYMBOL_GPL(cs42l51_resume); MODULE_AUTHOR("Arnaud Patard "); MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver"); MODULE_LICENSE("GPL");