From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- sound/soc/codecs/max9867.c | 671 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 671 insertions(+) create mode 100644 sound/soc/codecs/max9867.c (limited to 'sound/soc/codecs/max9867.c') diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c new file mode 100644 index 000000000..6d2941a9d --- /dev/null +++ b/sound/soc/codecs/max9867.c @@ -0,0 +1,671 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// MAX9867 ALSA SoC codec driver +// +// Copyright 2013-2015 Maxim Integrated Products +// Copyright 2018 Ladislav Michl +// + +#include +#include +#include +#include +#include +#include +#include +#include "max9867.h" + +struct max9867_priv { + struct regmap *regmap; + const struct snd_pcm_hw_constraint_list *constraints; + unsigned int sysclk, pclk; + bool provider, dsp_a; + unsigned int adc_dac_active; +}; + +static const char *const max9867_spmode[] = { + "Stereo Diff", "Mono Diff", + "Stereo Cap", "Mono Cap", + "Stereo Single", "Mono Single", + "Stereo Single Fast", "Mono Single Fast" +}; +static const char *const max9867_filter_text[] = {"IIR", "FIR"}; + +static const char *const max9867_adc_dac_filter_text[] = { + "Disabled", + "Elliptical/16/256", + "Butterworth/16/500", + "Elliptical/8/256", + "Butterworth/8/500", + "Butterworth/8-24" +}; + +enum max9867_adc_dac { + MAX9867_ADC_LEFT, + MAX9867_ADC_RIGHT, + MAX9867_DAC_LEFT, + MAX9867_DAC_RIGHT, +}; + +static int max9867_adc_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); + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + enum max9867_adc_dac adc_dac; + + if (!strcmp(w->name, "ADCL")) + adc_dac = MAX9867_ADC_LEFT; + else if (!strcmp(w->name, "ADCR")) + adc_dac = MAX9867_ADC_RIGHT; + else if (!strcmp(w->name, "DACL")) + adc_dac = MAX9867_DAC_LEFT; + else if (!strcmp(w->name, "DACR")) + adc_dac = MAX9867_DAC_RIGHT; + else + return 0; + + if (SND_SOC_DAPM_EVENT_ON(event)) + max9867->adc_dac_active |= BIT(adc_dac); + else if (SND_SOC_DAPM_EVENT_OFF(event)) + max9867->adc_dac_active &= ~BIT(adc_dac); + + return 0; +} + +static int max9867_filter_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + unsigned int reg; + int ret; + + ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®); + if (ret) + return -EINVAL; + + if (reg & MAX9867_CODECFLTR_MODE) + ucontrol->value.enumerated.item[0] = 1; + else + ucontrol->value.enumerated.item[0] = 0; + + return 0; +} + +static int max9867_filter_set(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + unsigned int reg, mode = ucontrol->value.enumerated.item[0]; + int ret; + + if (mode > 1) + return -EINVAL; + + /* don't allow change if ADC/DAC active */ + if (max9867->adc_dac_active) + return -EBUSY; + + /* read current filter mode */ + ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®); + if (ret) + return -EINVAL; + + if (mode) + mode = MAX9867_CODECFLTR_MODE; + + /* check if change is needed */ + if ((reg & MAX9867_CODECFLTR_MODE) == mode) + return 0; + + /* shutdown codec before switching filter mode */ + regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, + MAX9867_PWRMAN_SHDN, 0); + + /* switch filter mode */ + regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR, + MAX9867_CODECFLTR_MODE, mode); + + /* out of shutdown now */ + regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, + MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN); + + return 0; +} + +static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text); +static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0, + max9867_adc_dac_filter_text); +static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4, + max9867_adc_dac_filter_text); +static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0, + max9867_spmode); +static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv, + 0, 2, TLV_DB_SCALE_ITEM(-8600, 200, 1), + 3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0), + 18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0), + 26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0), + 35, 40, TLV_DB_SCALE_ITEM( 350, 50, 0), +); +static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0); +static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0); +static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0); +static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0); +static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0); +static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv, + 0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1), + 3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0), +); + +static const struct snd_kcontrol_new max9867_snd_controls[] = { + SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL, + MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv), + SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL, + MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv), + SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN, + MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv), + SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN, + MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv), + SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1), + SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1, + max9867_dac_tlv), + SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0, + max9867_dacboost_tlv), + SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1, + max9867_adc_tlv), + SOC_ENUM("Speaker Mode", max9867_spkmode), + SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0), + SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0), + SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set), + SOC_ENUM("ADC Filter", max9867_adc_filter), + SOC_ENUM("DAC Filter", max9867_dac_filter), + SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0), +}; + +/* Input mixer */ +static const struct snd_kcontrol_new max9867_input_mixer_controls[] = { + SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0), + SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0), +}; + +/* Output mixer */ +static const struct snd_kcontrol_new max9867_output_mixer_controls[] = { + SOC_DAPM_DOUBLE_R("Line Bypass Switch", + MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1), +}; + +/* Sidetone mixer */ +static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = { + SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0), +}; + +/* Line out switch */ +static const struct snd_kcontrol_new max9867_line_out_control = + SOC_DAPM_DOUBLE_R("Switch", + MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1); + +/* DMIC mux */ +static const char *const dmic_mux_text[] = { + "ADC", "DMIC" +}; +static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum, + MAX9867_MICCONFIG, 5, dmic_mux_text); +static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum, + MAX9867_MICCONFIG, 4, dmic_mux_text); +static const struct snd_kcontrol_new max9867_left_dmic_mux = + SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum); +static const struct snd_kcontrol_new max9867_right_dmic_mux = + SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum); + +static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = { + SND_SOC_DAPM_INPUT("MICL"), + SND_SOC_DAPM_INPUT("MICR"), + SND_SOC_DAPM_INPUT("DMICL"), + SND_SOC_DAPM_INPUT("DMICR"), + SND_SOC_DAPM_INPUT("LINL"), + SND_SOC_DAPM_INPUT("LINR"), + + SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, + max9867_input_mixer_controls, + ARRAY_SIZE(max9867_input_mixer_controls)), + SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0, + &max9867_left_dmic_mux), + SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0, + &max9867_right_dmic_mux), + SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0, + max9867_adc_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0, + max9867_adc_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0, + max9867_sidetone_mixer_controls, + ARRAY_SIZE(max9867_sidetone_mixer_controls)), + SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0, + max9867_output_mixer_controls, + ARRAY_SIZE(max9867_output_mixer_controls)), + SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0, + max9867_adc_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0, + max9867_adc_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0, + &max9867_line_out_control), + SND_SOC_DAPM_OUTPUT("LOUT"), + SND_SOC_DAPM_OUTPUT("ROUT"), +}; + +static const struct snd_soc_dapm_route max9867_audio_map[] = { + {"Left Line Input", NULL, "LINL"}, + {"Right Line Input", NULL, "LINR"}, + {"Input Mixer", "Mic Capture Switch", "MICL"}, + {"Input Mixer", "Mic Capture Switch", "MICR"}, + {"Input Mixer", "Line Capture Switch", "Left Line Input"}, + {"Input Mixer", "Line Capture Switch", "Right Line Input"}, + {"DMICL Mux", "DMIC", "DMICL"}, + {"DMICR Mux", "DMIC", "DMICR"}, + {"DMICL Mux", "ADC", "Input Mixer"}, + {"DMICR Mux", "ADC", "Input Mixer"}, + {"ADCL", NULL, "DMICL Mux"}, + {"ADCR", NULL, "DMICR Mux"}, + + {"Digital", "Sidetone Switch", "ADCL"}, + {"Digital", "Sidetone Switch", "ADCR"}, + {"DACL", NULL, "Digital"}, + {"DACR", NULL, "Digital"}, + + {"Output Mixer", "Line Bypass Switch", "Left Line Input"}, + {"Output Mixer", "Line Bypass Switch", "Right Line Input"}, + {"Output Mixer", NULL, "DACL"}, + {"Output Mixer", NULL, "DACR"}, + {"Master Playback", "Switch", "Output Mixer"}, + {"LOUT", NULL, "Master Playback"}, + {"ROUT", NULL, "Master Playback"}, +}; + +static const unsigned int max9867_rates_44k1[] = { + 11025, 22050, 44100, +}; + +static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = { + .list = max9867_rates_44k1, + .count = ARRAY_SIZE(max9867_rates_44k1), +}; + +static const unsigned int max9867_rates_48k[] = { + 8000, 16000, 32000, 48000, +}; + +static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = { + .list = max9867_rates_48k, + .count = ARRAY_SIZE(max9867_rates_48k), +}; + +static int max9867_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct max9867_priv *max9867 = + snd_soc_component_get_drvdata(dai->component); + + if (max9867->constraints) + snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, max9867->constraints); + + return 0; +} + +static int max9867_dai_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) +{ + int value; + unsigned long int rate, ratio; + struct snd_soc_component *component = dai->component; + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params), + max9867->pclk); + + /* set up the ni value */ + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, + MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8); + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, + MAX9867_NI_LOW_MASK, 0x00FF & ni); + if (max9867->provider) { + if (max9867->dsp_a) { + value = MAX9867_IFC1B_48X; + } else { + rate = params_rate(params) * 2 * params_width(params); + ratio = max9867->pclk / rate; + switch (params_width(params)) { + case 8: + case 16: + switch (ratio) { + case 2: + value = MAX9867_IFC1B_PCLK_2; + break; + case 4: + value = MAX9867_IFC1B_PCLK_4; + break; + case 8: + value = MAX9867_IFC1B_PCLK_8; + break; + case 16: + value = MAX9867_IFC1B_PCLK_16; + break; + default: + return -EINVAL; + } + break; + case 24: + value = MAX9867_IFC1B_48X; + break; + case 32: + value = MAX9867_IFC1B_64X; + break; + default: + return -EINVAL; + } + } + regmap_update_bits(max9867->regmap, MAX9867_IFC1B, + MAX9867_IFC1B_BCLK_MASK, value); + } else { + /* + * digital pll locks on to any externally supplied LRCLK signal + * and also enable rapid lock mode. + */ + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, + MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK); + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, + MAX9867_PLL, MAX9867_PLL); + } + return 0; +} + +static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction) +{ + struct snd_soc_component *component = dai->component; + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + + return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, + 1 << 6, !!mute << 6); +} + +static int max9867_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 max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + int value = 0; + + /* Set the prescaler based on the master clock frequency*/ + if (freq >= 10000000 && freq <= 20000000) { + value |= MAX9867_PSCLK_10_20; + max9867->pclk = freq; + } else if (freq >= 20000000 && freq <= 40000000) { + value |= MAX9867_PSCLK_20_40; + max9867->pclk = freq / 2; + } else if (freq >= 40000000 && freq <= 60000000) { + value |= MAX9867_PSCLK_40_60; + max9867->pclk = freq / 4; + } else { + dev_err(component->dev, + "Invalid clock frequency %uHz (required 10-60MHz)\n", + freq); + return -EINVAL; + } + if (freq % 48000 == 0) + max9867->constraints = &max9867_constraints_48k; + else if (freq % 44100 == 0) + max9867->constraints = &max9867_constraints_44k1; + else + dev_warn(component->dev, + "Unable to set exact rate with %uHz clock frequency\n", + freq); + max9867->sysclk = freq; + value = value << MAX9867_PSCLK_SHIFT; + /* exact integer mode is not supported */ + value &= ~MAX9867_FREQ_MASK; + regmap_update_bits(max9867->regmap, MAX9867_SYSCLK, + MAX9867_PSCLK_MASK, value); + return 0; +} + +static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_component *component = codec_dai->component; + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + u8 iface1A, iface1B; + + switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { + case SND_SOC_DAIFMT_CBP_CFP: + max9867->provider = true; + iface1A = MAX9867_MASTER; + iface1B = MAX9867_IFC1B_48X; + break; + case SND_SOC_DAIFMT_CBC_CFC: + max9867->provider = false; + iface1A = iface1B = 0; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + max9867->dsp_a = false; + iface1A |= MAX9867_I2S_DLY; + break; + case SND_SOC_DAIFMT_DSP_A: + max9867->dsp_a = true; + iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ; + break; + default: + return -EINVAL; + } + + /* Clock inversion bits, BCI and WCI */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE; + break; + case SND_SOC_DAIFMT_IB_NF: + iface1A |= MAX9867_BCI_MODE; + break; + case SND_SOC_DAIFMT_NB_IF: + iface1A |= MAX9867_WCI_MODE; + break; + default: + return -EINVAL; + } + + regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A); + regmap_update_bits(max9867->regmap, MAX9867_IFC1B, + MAX9867_IFC1B_BCLK_MASK, iface1B); + + return 0; +} + +static const struct snd_soc_dai_ops max9867_dai_ops = { + .set_sysclk = max9867_set_dai_sysclk, + .set_fmt = max9867_dai_set_fmt, + .mute_stream = max9867_mute, + .startup = max9867_startup, + .hw_params = max9867_dai_hw_params, + .no_capture_mute = 1, +}; + +static struct snd_soc_dai_driver max9867_dai[] = { + { + .name = "max9867-aif1", + .playback = { + .stream_name = "HiFi Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .stream_name = "HiFi Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &max9867_dai_ops, + .symmetric_rate = 1, + } +}; + +#ifdef CONFIG_PM +static int max9867_suspend(struct snd_soc_component *component) +{ + snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); + + return 0; +} + +static int max9867_resume(struct snd_soc_component *component) +{ + snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); + + return 0; +} +#else +#define max9867_suspend NULL +#define max9867_resume NULL +#endif + +static int max9867_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + int err; + struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); + + switch (level) { + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + err = regcache_sync(max9867->regmap); + if (err) + return err; + + err = regmap_write(max9867->regmap, + MAX9867_PWRMAN, 0xff); + if (err) + return err; + } + break; + case SND_SOC_BIAS_OFF: + err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0); + if (err) + return err; + + regcache_mark_dirty(max9867->regmap); + break; + default: + break; + } + + return 0; +} + +static const struct snd_soc_component_driver max9867_component = { + .controls = max9867_snd_controls, + .num_controls = ARRAY_SIZE(max9867_snd_controls), + .dapm_routes = max9867_audio_map, + .num_dapm_routes = ARRAY_SIZE(max9867_audio_map), + .dapm_widgets = max9867_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets), + .suspend = max9867_suspend, + .resume = max9867_resume, + .set_bias_level = max9867_set_bias_level, + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static bool max9867_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX9867_STATUS: + case MAX9867_JACKSTATUS: + case MAX9867_AUXHIGH: + case MAX9867_AUXLOW: + return true; + default: + return false; + } +} + +static const struct regmap_config max9867_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MAX9867_REVISION, + .volatile_reg = max9867_volatile_register, + .cache_type = REGCACHE_RBTREE, +}; + +static int max9867_i2c_probe(struct i2c_client *i2c) +{ + struct max9867_priv *max9867; + int ret, reg; + + max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL); + if (!max9867) + return -ENOMEM; + + i2c_set_clientdata(i2c, max9867); + max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap); + if (IS_ERR(max9867->regmap)) { + ret = PTR_ERR(max9867->regmap); + dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); + return ret; + } + ret = regmap_read(max9867->regmap, MAX9867_REVISION, ®); + if (ret < 0) { + dev_err(&i2c->dev, "Failed to read: %d\n", ret); + return ret; + } + dev_info(&i2c->dev, "device revision: %x\n", reg); + ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component, + max9867_dai, ARRAY_SIZE(max9867_dai)); + if (ret < 0) + dev_err(&i2c->dev, "Failed to register component: %d\n", ret); + return ret; +} + +static const struct i2c_device_id max9867_i2c_id[] = { + { "max9867", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max9867_i2c_id); + +#ifdef CONFIG_OF +static const struct of_device_id max9867_of_match[] = { + { .compatible = "maxim,max9867", }, + { } +}; +MODULE_DEVICE_TABLE(of, max9867_of_match); +#endif + +static struct i2c_driver max9867_i2c_driver = { + .driver = { + .name = "max9867", + .of_match_table = of_match_ptr(max9867_of_match), + }, + .probe_new = max9867_i2c_probe, + .id_table = max9867_i2c_id, +}; + +module_i2c_driver(max9867_i2c_driver); + +MODULE_AUTHOR("Ladislav Michl "); +MODULE_DESCRIPTION("ASoC MAX9867 driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3