| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * max98926.c -- ALSA SoC MAX98926 driver |
| * Copyright 2013-15 Maxim Integrated Products |
| */ |
| #include <linux/delay.h> |
| #include <linux/i2c.h> |
| #include <linux/module.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| #include <linux/cdev.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/tlv.h> |
| #include "max98926.h" |
| |
| static const char * const max98926_boost_voltage_txt[] = { |
| "8.5V", "8.25V", "8.0V", "7.75V", "7.5V", "7.25V", "7.0V", "6.75V", |
| "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V" |
| }; |
| |
| static const char *const max98926_pdm_ch_text[] = { |
| "Current", "Voltage", |
| }; |
| |
| static const char *const max98926_hpf_cutoff_txt[] = { |
| "Disable", "DC Block", "100Hz", |
| "200Hz", "400Hz", "800Hz", |
| }; |
| |
| static const struct reg_default max98926_reg[] = { |
| { 0x0B, 0x00 }, /* IRQ Enable0 */ |
| { 0x0C, 0x00 }, /* IRQ Enable1 */ |
| { 0x0D, 0x00 }, /* IRQ Enable2 */ |
| { 0x0E, 0x00 }, /* IRQ Clear0 */ |
| { 0x0F, 0x00 }, /* IRQ Clear1 */ |
| { 0x10, 0x00 }, /* IRQ Clear2 */ |
| { 0x11, 0xC0 }, /* Map0 */ |
| { 0x12, 0x00 }, /* Map1 */ |
| { 0x13, 0x00 }, /* Map2 */ |
| { 0x14, 0xF0 }, /* Map3 */ |
| { 0x15, 0x00 }, /* Map4 */ |
| { 0x16, 0xAB }, /* Map5 */ |
| { 0x17, 0x89 }, /* Map6 */ |
| { 0x18, 0x00 }, /* Map7 */ |
| { 0x19, 0x00 }, /* Map8 */ |
| { 0x1A, 0x04 }, /* DAI Clock Mode 1 */ |
| { 0x1B, 0x00 }, /* DAI Clock Mode 2 */ |
| { 0x1C, 0x00 }, /* DAI Clock Divider Denominator MSBs */ |
| { 0x1D, 0x00 }, /* DAI Clock Divider Denominator LSBs */ |
| { 0x1E, 0xF0 }, /* DAI Clock Divider Numerator MSBs */ |
| { 0x1F, 0x00 }, /* DAI Clock Divider Numerator LSBs */ |
| { 0x20, 0x50 }, /* Format */ |
| { 0x21, 0x00 }, /* TDM Slot Select */ |
| { 0x22, 0x00 }, /* DOUT Configuration VMON */ |
| { 0x23, 0x00 }, /* DOUT Configuration IMON */ |
| { 0x24, 0x00 }, /* DOUT Configuration VBAT */ |
| { 0x25, 0x00 }, /* DOUT Configuration VBST */ |
| { 0x26, 0x00 }, /* DOUT Configuration FLAG */ |
| { 0x27, 0xFF }, /* DOUT HiZ Configuration 1 */ |
| { 0x28, 0xFF }, /* DOUT HiZ Configuration 2 */ |
| { 0x29, 0xFF }, /* DOUT HiZ Configuration 3 */ |
| { 0x2A, 0xFF }, /* DOUT HiZ Configuration 4 */ |
| { 0x2B, 0x02 }, /* DOUT Drive Strength */ |
| { 0x2C, 0x90 }, /* Filters */ |
| { 0x2D, 0x00 }, /* Gain */ |
| { 0x2E, 0x02 }, /* Gain Ramping */ |
| { 0x2F, 0x00 }, /* Speaker Amplifier */ |
| { 0x30, 0x0A }, /* Threshold */ |
| { 0x31, 0x00 }, /* ALC Attack */ |
| { 0x32, 0x80 }, /* ALC Atten and Release */ |
| { 0x33, 0x00 }, /* ALC Infinite Hold Release */ |
| { 0x34, 0x92 }, /* ALC Configuration */ |
| { 0x35, 0x01 }, /* Boost Converter */ |
| { 0x36, 0x00 }, /* Block Enable */ |
| { 0x37, 0x00 }, /* Configuration */ |
| { 0x38, 0x00 }, /* Global Enable */ |
| { 0x3A, 0x00 }, /* Boost Limiter */ |
| }; |
| |
| static const struct soc_enum max98926_voltage_enum[] = { |
| SOC_ENUM_SINGLE(MAX98926_DAI_CLK_DIV_N_LSBS, 0, |
| ARRAY_SIZE(max98926_pdm_ch_text), |
| max98926_pdm_ch_text), |
| }; |
| |
| static const struct snd_kcontrol_new max98926_voltage_control = |
| SOC_DAPM_ENUM("Route", max98926_voltage_enum); |
| |
| static const struct soc_enum max98926_current_enum[] = { |
| SOC_ENUM_SINGLE(MAX98926_DAI_CLK_DIV_N_LSBS, |
| MAX98926_PDM_SOURCE_1_SHIFT, |
| ARRAY_SIZE(max98926_pdm_ch_text), |
| max98926_pdm_ch_text), |
| }; |
| |
| static const struct snd_kcontrol_new max98926_current_control = |
| SOC_DAPM_ENUM("Route", max98926_current_enum); |
| |
| static const struct snd_kcontrol_new max98926_mixer_controls[] = { |
| SOC_DAPM_SINGLE("PCM Single Switch", MAX98926_SPK_AMP, |
| MAX98926_INSELECT_MODE_SHIFT, 0, 0), |
| SOC_DAPM_SINGLE("PDM Single Switch", MAX98926_SPK_AMP, |
| MAX98926_INSELECT_MODE_SHIFT, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new max98926_dai_controls[] = { |
| SOC_DAPM_SINGLE("Left", MAX98926_GAIN, |
| MAX98926_DAC_IN_SEL_SHIFT, 0, 0), |
| SOC_DAPM_SINGLE("Right", MAX98926_GAIN, |
| MAX98926_DAC_IN_SEL_SHIFT, 1, 0), |
| SOC_DAPM_SINGLE("LeftRight", MAX98926_GAIN, |
| MAX98926_DAC_IN_SEL_SHIFT, 2, 0), |
| SOC_DAPM_SINGLE("(Left+Right)/2 Switch", MAX98926_GAIN, |
| MAX98926_DAC_IN_SEL_SHIFT, 3, 0), |
| }; |
| |
| static const struct snd_soc_dapm_widget max98926_dapm_widgets[] = { |
| SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, |
| SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_DAC("Amp Enable", NULL, MAX98926_BLOCK_ENABLE, |
| MAX98926_SPK_EN_SHIFT, 0), |
| SND_SOC_DAPM_SUPPLY("Global Enable", MAX98926_GLOBAL_ENABLE, |
| MAX98926_EN_SHIFT, 0, NULL, 0), |
| SND_SOC_DAPM_SUPPLY("VI Enable", MAX98926_BLOCK_ENABLE, |
| MAX98926_ADC_IMON_EN_WIDTH | |
| MAX98926_ADC_VMON_EN_SHIFT, |
| 0, NULL, 0), |
| SND_SOC_DAPM_PGA("BST Enable", MAX98926_BLOCK_ENABLE, |
| MAX98926_BST_EN_SHIFT, 0, NULL, 0), |
| SND_SOC_DAPM_OUTPUT("BE_OUT"), |
| SND_SOC_DAPM_MIXER("PCM Sel", MAX98926_SPK_AMP, |
| MAX98926_INSELECT_MODE_SHIFT, 0, |
| &max98926_mixer_controls[0], |
| ARRAY_SIZE(max98926_mixer_controls)), |
| SND_SOC_DAPM_MIXER("DAI Sel", |
| MAX98926_GAIN, MAX98926_DAC_IN_SEL_SHIFT, 0, |
| &max98926_dai_controls[0], |
| ARRAY_SIZE(max98926_dai_controls)), |
| SND_SOC_DAPM_MUX("PDM CH1 Source", |
| MAX98926_DAI_CLK_DIV_N_LSBS, |
| MAX98926_PDM_CURRENT_SHIFT, |
| 0, &max98926_current_control), |
| SND_SOC_DAPM_MUX("PDM CH0 Source", |
| MAX98926_DAI_CLK_DIV_N_LSBS, |
| MAX98926_PDM_VOLTAGE_SHIFT, |
| 0, &max98926_voltage_control), |
| }; |
| |
| static const struct snd_soc_dapm_route max98926_audio_map[] = { |
| {"VI Enable", NULL, "DAI_OUT"}, |
| {"DAI Sel", "Left", "VI Enable"}, |
| {"DAI Sel", "Right", "VI Enable"}, |
| {"DAI Sel", "LeftRight", "VI Enable"}, |
| {"DAI Sel", "LeftRightDiv2", "VI Enable"}, |
| {"PCM Sel", "PCM", "DAI Sel"}, |
| |
| {"PDM CH1 Source", "Current", "DAI_OUT"}, |
| {"PDM CH1 Source", "Voltage", "DAI_OUT"}, |
| {"PDM CH0 Source", "Current", "DAI_OUT"}, |
| {"PDM CH0 Source", "Voltage", "DAI_OUT"}, |
| {"PCM Sel", "Analog", "PDM CH1 Source"}, |
| {"PCM Sel", "Analog", "PDM CH0 Source"}, |
| {"Amp Enable", NULL, "PCM Sel"}, |
| |
| {"BST Enable", NULL, "Amp Enable"}, |
| {"BE_OUT", NULL, "BST Enable"}, |
| }; |
| |
| static bool max98926_volatile_register(struct device *dev, unsigned int reg) |
| { |
| switch (reg) { |
| case MAX98926_VBAT_DATA: |
| case MAX98926_VBST_DATA: |
| case MAX98926_LIVE_STATUS0: |
| case MAX98926_LIVE_STATUS1: |
| case MAX98926_LIVE_STATUS2: |
| case MAX98926_STATE0: |
| case MAX98926_STATE1: |
| case MAX98926_STATE2: |
| case MAX98926_FLAG0: |
| case MAX98926_FLAG1: |
| case MAX98926_FLAG2: |
| case MAX98926_VERSION: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool max98926_readable_register(struct device *dev, unsigned int reg) |
| { |
| switch (reg) { |
| case MAX98926_IRQ_CLEAR0: |
| case MAX98926_IRQ_CLEAR1: |
| case MAX98926_IRQ_CLEAR2: |
| case MAX98926_ALC_HOLD_RLS: |
| return false; |
| default: |
| return true; |
| } |
| }; |
| |
| static DECLARE_TLV_DB_SCALE(max98926_spk_tlv, -600, 100, 0); |
| static DECLARE_TLV_DB_RANGE(max98926_current_tlv, |
| 0, 11, TLV_DB_SCALE_ITEM(20, 20, 0), |
| 12, 15, TLV_DB_SCALE_ITEM(320, 40, 0), |
| ); |
| |
| static SOC_ENUM_SINGLE_DECL(max98926_dac_hpf_cutoff, |
| MAX98926_FILTERS, MAX98926_DAC_HPF_SHIFT, |
| max98926_hpf_cutoff_txt); |
| |
| static SOC_ENUM_SINGLE_DECL(max98926_boost_voltage, |
| MAX98926_CONFIGURATION, MAX98926_BST_VOUT_SHIFT, |
| max98926_boost_voltage_txt); |
| |
| static const struct snd_kcontrol_new max98926_snd_controls[] = { |
| SOC_SINGLE_TLV("Speaker Volume", MAX98926_GAIN, |
| MAX98926_SPK_GAIN_SHIFT, |
| (1<<MAX98926_SPK_GAIN_WIDTH)-1, 0, |
| max98926_spk_tlv), |
| SOC_SINGLE("Ramp Switch", MAX98926_GAIN_RAMPING, |
| MAX98926_SPK_RMP_EN_SHIFT, 1, 0), |
| SOC_SINGLE("ZCD Switch", MAX98926_GAIN_RAMPING, |
| MAX98926_SPK_ZCD_EN_SHIFT, 1, 0), |
| SOC_SINGLE("ALC Switch", MAX98926_THRESHOLD, |
| MAX98926_ALC_EN_SHIFT, 1, 0), |
| SOC_SINGLE("ALC Threshold", MAX98926_THRESHOLD, |
| MAX98926_ALC_TH_SHIFT, |
| (1<<MAX98926_ALC_TH_WIDTH)-1, 0), |
| SOC_ENUM("Boost Output Voltage", max98926_boost_voltage), |
| SOC_SINGLE_TLV("Boost Current Limit", MAX98926_BOOST_LIMITER, |
| MAX98926_BST_ILIM_SHIFT, |
| (1<<MAX98926_BST_ILIM_SHIFT)-1, 0, |
| max98926_current_tlv), |
| SOC_ENUM("DAC HPF Cutoff", max98926_dac_hpf_cutoff), |
| SOC_DOUBLE("PDM Channel One", MAX98926_DAI_CLK_DIV_N_LSBS, |
| MAX98926_PDM_CHANNEL_1_SHIFT, |
| MAX98926_PDM_CHANNEL_1_HIZ, 1, 0), |
| SOC_DOUBLE("PDM Channel Zero", MAX98926_DAI_CLK_DIV_N_LSBS, |
| MAX98926_PDM_CHANNEL_0_SHIFT, |
| MAX98926_PDM_CHANNEL_0_HIZ, 1, 0), |
| }; |
| |
| static const struct { |
| int rate; |
| int sr; |
| } rate_table[] = { |
| { |
| .rate = 8000, |
| .sr = 0, |
| }, |
| { |
| .rate = 11025, |
| .sr = 1, |
| }, |
| { |
| .rate = 12000, |
| .sr = 2, |
| }, |
| { |
| .rate = 16000, |
| .sr = 3, |
| }, |
| { |
| .rate = 22050, |
| .sr = 4, |
| }, |
| { |
| .rate = 24000, |
| .sr = 5, |
| }, |
| { |
| .rate = 32000, |
| .sr = 6, |
| }, |
| { |
| .rate = 44100, |
| .sr = 7, |
| }, |
| { |
| .rate = 48000, |
| .sr = 8, |
| }, |
| }; |
| |
| static void max98926_set_sense_data(struct max98926_priv *max98926) |
| { |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DOUT_CFG_VMON, |
| MAX98926_DAI_VMON_EN_MASK, |
| MAX98926_DAI_VMON_EN_MASK); |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DOUT_CFG_IMON, |
| MAX98926_DAI_IMON_EN_MASK, |
| MAX98926_DAI_IMON_EN_MASK); |
| |
| if (!max98926->interleave_mode) { |
| /* set VMON slots */ |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DOUT_CFG_VMON, |
| MAX98926_DAI_VMON_SLOT_MASK, |
| max98926->v_slot); |
| /* set IMON slots */ |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DOUT_CFG_IMON, |
| MAX98926_DAI_IMON_SLOT_MASK, |
| max98926->i_slot); |
| } else { |
| /* enable interleave mode */ |
| regmap_update_bits(max98926->regmap, |
| MAX98926_FORMAT, |
| MAX98926_DAI_INTERLEAVE_MASK, |
| MAX98926_DAI_INTERLEAVE_MASK); |
| /* set interleave slots */ |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DOUT_CFG_VBAT, |
| MAX98926_DAI_INTERLEAVE_SLOT_MASK, |
| max98926->v_slot); |
| } |
| } |
| |
| static int max98926_dai_set_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_component *component = codec_dai->component; |
| struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); |
| unsigned int invert = 0; |
| |
| dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); |
| |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBS_CFS: |
| max98926_set_sense_data(max98926); |
| break; |
| default: |
| dev_err(component->dev, "DAI clock mode unsupported\n"); |
| return -EINVAL; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| invert = MAX98926_DAI_WCI_MASK; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| invert = MAX98926_DAI_BCI_MASK; |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| invert = MAX98926_DAI_BCI_MASK | MAX98926_DAI_WCI_MASK; |
| break; |
| default: |
| dev_err(component->dev, "DAI invert mode unsupported\n"); |
| return -EINVAL; |
| } |
| |
| regmap_write(max98926->regmap, |
| MAX98926_FORMAT, MAX98926_DAI_DLY_MASK); |
| regmap_update_bits(max98926->regmap, MAX98926_FORMAT, |
| MAX98926_DAI_BCI_MASK, invert); |
| return 0; |
| } |
| |
| static int max98926_dai_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| int dai_sr = -EINVAL; |
| int rate = params_rate(params), i; |
| struct snd_soc_component *component = dai->component; |
| struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); |
| int blr_clk_ratio; |
| |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_FORMAT, |
| MAX98926_DAI_CHANSZ_MASK, |
| MAX98926_DAI_CHANSZ_16); |
| max98926->ch_size = 16; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_FORMAT, |
| MAX98926_DAI_CHANSZ_MASK, |
| MAX98926_DAI_CHANSZ_24); |
| max98926->ch_size = 24; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_FORMAT, |
| MAX98926_DAI_CHANSZ_MASK, |
| MAX98926_DAI_CHANSZ_32); |
| max98926->ch_size = 32; |
| break; |
| default: |
| dev_dbg(component->dev, "format unsupported %d\n", |
| params_format(params)); |
| return -EINVAL; |
| } |
| |
| /* BCLK/LRCLK ratio calculation */ |
| blr_clk_ratio = params_channels(params) * max98926->ch_size; |
| |
| switch (blr_clk_ratio) { |
| case 32: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DAI_CLK_MODE2, |
| MAX98926_DAI_BSEL_MASK, |
| MAX98926_DAI_BSEL_32); |
| break; |
| case 48: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DAI_CLK_MODE2, |
| MAX98926_DAI_BSEL_MASK, |
| MAX98926_DAI_BSEL_48); |
| break; |
| case 64: |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DAI_CLK_MODE2, |
| MAX98926_DAI_BSEL_MASK, |
| MAX98926_DAI_BSEL_64); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* find the closest rate */ |
| for (i = 0; i < ARRAY_SIZE(rate_table); i++) { |
| if (rate_table[i].rate >= rate) { |
| dai_sr = rate_table[i].sr; |
| break; |
| } |
| } |
| if (dai_sr < 0) |
| return -EINVAL; |
| |
| /* set DAI_SR to correct LRCLK frequency */ |
| regmap_update_bits(max98926->regmap, |
| MAX98926_DAI_CLK_MODE2, |
| MAX98926_DAI_SR_MASK, dai_sr << MAX98926_DAI_SR_SHIFT); |
| return 0; |
| } |
| |
| #define MAX98926_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ |
| SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
| |
| static const struct snd_soc_dai_ops max98926_dai_ops = { |
| .set_fmt = max98926_dai_set_fmt, |
| .hw_params = max98926_dai_hw_params, |
| }; |
| |
| static struct snd_soc_dai_driver max98926_dai[] = { |
| { |
| .name = "max98926-aif1", |
| .playback = { |
| .stream_name = "HiFi Playback", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = SNDRV_PCM_RATE_8000_48000, |
| .formats = MAX98926_FORMATS, |
| }, |
| .capture = { |
| .stream_name = "HiFi Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = SNDRV_PCM_RATE_8000_48000, |
| .formats = MAX98926_FORMATS, |
| }, |
| .ops = &max98926_dai_ops, |
| } |
| }; |
| |
| static int max98926_probe(struct snd_soc_component *component) |
| { |
| struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); |
| |
| max98926->component = component; |
| |
| /* Hi-Z all the slots */ |
| regmap_write(max98926->regmap, MAX98926_DOUT_HIZ_CFG4, 0xF0); |
| return 0; |
| } |
| |
| static const struct snd_soc_component_driver soc_component_dev_max98926 = { |
| .probe = max98926_probe, |
| .controls = max98926_snd_controls, |
| .num_controls = ARRAY_SIZE(max98926_snd_controls), |
| .dapm_routes = max98926_audio_map, |
| .num_dapm_routes = ARRAY_SIZE(max98926_audio_map), |
| .dapm_widgets = max98926_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(max98926_dapm_widgets), |
| .idle_bias_on = 1, |
| .use_pmdown_time = 1, |
| .endianness = 1, |
| .non_legacy_dai_naming = 1, |
| }; |
| |
| static const struct regmap_config max98926_regmap = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = MAX98926_VERSION, |
| .reg_defaults = max98926_reg, |
| .num_reg_defaults = ARRAY_SIZE(max98926_reg), |
| .volatile_reg = max98926_volatile_register, |
| .readable_reg = max98926_readable_register, |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| static int max98926_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| int ret, reg; |
| u32 value; |
| struct max98926_priv *max98926; |
| |
| max98926 = devm_kzalloc(&i2c->dev, |
| sizeof(*max98926), GFP_KERNEL); |
| if (!max98926) |
| return -ENOMEM; |
| |
| i2c_set_clientdata(i2c, max98926); |
| max98926->regmap = devm_regmap_init_i2c(i2c, &max98926_regmap); |
| if (IS_ERR(max98926->regmap)) { |
| ret = PTR_ERR(max98926->regmap); |
| dev_err(&i2c->dev, |
| "Failed to allocate regmap: %d\n", ret); |
| goto err_out; |
| } |
| if (of_property_read_bool(i2c->dev.of_node, "interleave-mode")) |
| max98926->interleave_mode = true; |
| |
| if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) { |
| if (value > MAX98926_DAI_VMON_SLOT_1E_1F) { |
| dev_err(&i2c->dev, "vmon slot number is wrong:\n"); |
| return -EINVAL; |
| } |
| max98926->v_slot = value; |
| } |
| if (!of_property_read_u32(i2c->dev.of_node, "imon-slot-no", &value)) { |
| if (value > MAX98926_DAI_IMON_SLOT_1E_1F) { |
| dev_err(&i2c->dev, "imon slot number is wrong:\n"); |
| return -EINVAL; |
| } |
| max98926->i_slot = value; |
| } |
| ret = regmap_read(max98926->regmap, |
| MAX98926_VERSION, ®); |
| if (ret < 0) { |
| dev_err(&i2c->dev, "Failed to read: %x\n", reg); |
| return ret; |
| } |
| |
| ret = devm_snd_soc_register_component(&i2c->dev, |
| &soc_component_dev_max98926, |
| max98926_dai, ARRAY_SIZE(max98926_dai)); |
| if (ret < 0) |
| dev_err(&i2c->dev, |
| "Failed to register component: %d\n", ret); |
| dev_info(&i2c->dev, "device version: %x\n", reg); |
| err_out: |
| return ret; |
| } |
| |
| static const struct i2c_device_id max98926_i2c_id[] = { |
| { "max98926", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, max98926_i2c_id); |
| |
| #ifdef CONFIG_OF |
| static const struct of_device_id max98926_of_match[] = { |
| { .compatible = "maxim,max98926", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, max98926_of_match); |
| #endif |
| |
| static struct i2c_driver max98926_i2c_driver = { |
| .driver = { |
| .name = "max98926", |
| .of_match_table = of_match_ptr(max98926_of_match), |
| }, |
| .probe = max98926_i2c_probe, |
| .id_table = max98926_i2c_id, |
| }; |
| |
| module_i2c_driver(max98926_i2c_driver) |
| MODULE_DESCRIPTION("ALSA SoC MAX98926 driver"); |
| MODULE_AUTHOR("Anish kumar <anish.kumar@maximintegrated.com>"); |
| MODULE_LICENSE("GPL"); |