| /* |
| * max9867.c -- max9867 ALSA SoC Audio driver |
| * |
| * Copyright 2013-15 Maxim Integrated Products |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/i2c.h> |
| #include <linux/module.h> |
| #include <linux/regmap.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/tlv.h> |
| #include "max9867.h" |
| |
| 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_sidetone_text[] = { |
| "None", "Left", "Right", "LeftRight", "LeftRightDiv2", |
| }; |
| static const char *const max9867_filter_text[] = {"IIR", "FIR"}; |
| |
| static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7, |
| max9867_filter_text); |
| static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0, |
| max9867_spmode); |
| static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6, |
| max9867_sidetone_text); |
| static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0); |
| static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1); |
| static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1); |
| static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1); |
| static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max98088_micboost_tlv, |
| 0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0), |
| 2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0), |
| ); |
| |
| static const struct snd_kcontrol_new max9867_snd_controls[] = { |
| SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL, |
| MAX9867_RIGHTVOL, 0, 63, 1), |
| SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN, |
| MAX9867_RIGHTMICGAIN, |
| 0, 15, 1, max9860_capture_tlv), |
| SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN, |
| MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv), |
| SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN, |
| MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv), |
| SOC_ENUM("Digital Sidetone Src", max9867_sidetone), |
| SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1), |
| SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0), |
| SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1), |
| SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL, |
| 4, 15, 1, max9860_adc_left_tlv), |
| SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL, |
| 0, 15, 1, max9860_adc_right_tlv), |
| SOC_ENUM("Speaker Mode", max9867_spkmode), |
| SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0), |
| SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0), |
| SOC_ENUM("DSP Filter", max9867_filter), |
| }; |
| |
| static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"}; |
| |
| static SOC_ENUM_SINGLE_DECL(max9867_mux_enum, |
| MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT, |
| max9867_mux); |
| |
| static const struct snd_kcontrol_new max9867_dapm_mux_controls = |
| SOC_DAPM_ENUM("Route", max9867_mux_enum); |
| |
| static const struct snd_kcontrol_new max9867_left_dapm_control = |
| SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0); |
| static const struct snd_kcontrol_new max9867_right_dapm_control = |
| SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0); |
| static const struct snd_kcontrol_new max9867_line_dapm_control = |
| SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1); |
| |
| static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = { |
| SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0), |
| SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0), |
| SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), |
| SND_SOC_DAPM_OUTPUT("HPOUT"), |
| |
| SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0), |
| SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0), |
| SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, |
| &max9867_dapm_mux_controls), |
| |
| SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), |
| SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1, |
| &max9867_left_dapm_control), |
| SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1, |
| &max9867_right_dapm_control), |
| SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0, |
| &max9867_line_dapm_control), |
| SND_SOC_DAPM_INPUT("LINE_IN"), |
| }; |
| |
| static const struct snd_soc_dapm_route max9867_audio_map[] = { |
| {"Left DAC", NULL, "DAI_OUT"}, |
| {"Right DAC", NULL, "DAI_OUT"}, |
| {"Output Mixer", NULL, "Left DAC"}, |
| {"Output Mixer", NULL, "Right DAC"}, |
| {"HPOUT", NULL, "Output Mixer"}, |
| |
| {"Left ADC", NULL, "DAI_IN"}, |
| {"Right ADC", NULL, "DAI_IN"}, |
| {"Input Mixer", NULL, "Left ADC"}, |
| {"Input Mixer", NULL, "Right ADC"}, |
| {"Input Mux", "Line", "Input Mixer"}, |
| {"Input Mux", "Mic", "Input Mixer"}, |
| {"Input Mux", "Mic_Line", "Input Mixer"}, |
| {"Right Line", "Switch", "Input Mux"}, |
| {"Left Line", "Switch", "Input Mux"}, |
| {"LINE_IN", NULL, "Left Line"}, |
| {"LINE_IN", NULL, "Right Line"}, |
| }; |
| |
| enum rates { |
| pcm_rate_8, pcm_rate_16, pcm_rate_24, |
| pcm_rate_32, pcm_rate_44, |
| pcm_rate_48, max_pcm_rate, |
| }; |
| |
| static const struct ni_div_rates { |
| u32 mclk; |
| u16 ni[max_pcm_rate]; |
| } ni_div[] = { |
| {11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} }, |
| {12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} }, |
| {12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} }, |
| {13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} }, |
| {19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} }, |
| {24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} }, |
| {26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} }, |
| {27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} }, |
| }; |
| |
| static inline int get_ni_value(int mclk, int rate) |
| { |
| int i, ret = 0; |
| |
| /* find the closest rate index*/ |
| for (i = 0; i < ARRAY_SIZE(ni_div); i++) { |
| if (ni_div[i].mclk >= mclk) |
| break; |
| } |
| if (i == ARRAY_SIZE(ni_div)) |
| return -EINVAL; |
| |
| switch (rate) { |
| case 8000: |
| return ni_div[i].ni[pcm_rate_8]; |
| case 16000: |
| return ni_div[i].ni[pcm_rate_16]; |
| case 32000: |
| return ni_div[i].ni[pcm_rate_32]; |
| case 44100: |
| return ni_div[i].ni[pcm_rate_44]; |
| case 48000: |
| return ni_div[i].ni[pcm_rate_48]; |
| default: |
| pr_err("%s wrong rate %d\n", __func__, rate); |
| ret = -EINVAL; |
| } |
| return ret; |
| } |
| |
| static int max9867_dai_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 max9867_priv *max9867 = snd_soc_component_get_drvdata(component); |
| unsigned int ni_h, ni_l; |
| int value; |
| |
| value = get_ni_value(max9867->sysclk, params_rate(params)); |
| if (value < 0) |
| return value; |
| |
| ni_h = (0xFF00 & value) >> 8; |
| ni_l = 0x00FF & value; |
| /* set up the ni value */ |
| regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, |
| MAX9867_NI_HIGH_MASK, ni_h); |
| regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, |
| MAX9867_NI_LOW_MASK, ni_l); |
| if (!max9867->master) { |
| /* |
| * 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); |
| } else { |
| unsigned long int bclk_rate, pclk_bclk_ratio; |
| int bclk_value; |
| |
| bclk_rate = params_rate(params) * 2 * params_width(params); |
| pclk_bclk_ratio = max9867->pclk/bclk_rate; |
| switch (params_width(params)) { |
| case 8: |
| case 16: |
| switch (pclk_bclk_ratio) { |
| case 2: |
| bclk_value = MAX9867_IFC1B_PCLK_2; |
| break; |
| case 4: |
| bclk_value = MAX9867_IFC1B_PCLK_4; |
| break; |
| case 8: |
| bclk_value = MAX9867_IFC1B_PCLK_8; |
| break; |
| case 16: |
| bclk_value = MAX9867_IFC1B_PCLK_16; |
| break; |
| default: |
| dev_err(component->dev, |
| "unsupported sampling rate\n"); |
| return -EINVAL; |
| } |
| break; |
| case 24: |
| bclk_value = MAX9867_IFC1B_24BIT; |
| break; |
| case 32: |
| bclk_value = MAX9867_IFC1B_32BIT; |
| break; |
| default: |
| dev_err(component->dev, "unsupported sampling rate\n"); |
| return -EINVAL; |
| } |
| regmap_update_bits(max9867->regmap, MAX9867_IFC1B, |
| MAX9867_IFC1B_BCLK_MASK, bclk_value); |
| } |
| return 0; |
| } |
| |
| static int max9867_prepare(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_component *component = dai->component; |
| struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); |
| |
| regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, |
| MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); |
| return 0; |
| } |
| |
| static int max9867_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_component *component = dai->component; |
| struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); |
| |
| if (mute) |
| regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, |
| MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK); |
| else |
| regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, |
| MAX9867_DAC_MUTE_MASK, 0); |
| return 0; |
| } |
| |
| 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; |
| } |
| value = value << MAX9867_PSCLK_SHIFT; |
| max9867->sysclk = freq; |
| /* 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 = 0, iface1B = 0; |
| |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| max9867->master = 1; |
| iface1A |= MAX9867_MASTER; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| max9867->master = 0; |
| iface1A &= ~MAX9867_MASTER; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| iface1A |= MAX9867_I2S_DLY; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| 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_write(max9867->regmap, MAX9867_IFC1B, iface1B); |
| return 0; |
| } |
| |
| static const struct snd_soc_dai_ops max9867_dai_ops = { |
| .set_fmt = max9867_dai_set_fmt, |
| .set_sysclk = max9867_set_dai_sysclk, |
| .prepare = max9867_prepare, |
| .digital_mute = max9867_mute, |
| .hw_params = max9867_dai_hw_params, |
| }; |
| |
| #define MAX9867_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\ |
| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) |
| #define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) |
| |
| static struct snd_soc_dai_driver max9867_dai[] = { |
| { |
| .name = "max9867-aif1", |
| .playback = { |
| .stream_name = "HiFi Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = MAX9867_RATES, |
| .formats = MAX9867_FORMATS, |
| }, |
| .capture = { |
| .stream_name = "HiFi Capture", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = MAX9867_RATES, |
| .formats = MAX9867_FORMATS, |
| }, |
| .ops = &max9867_dai_ops, |
| .symmetric_rates = 1, |
| } |
| }; |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int max9867_suspend(struct device *dev) |
| { |
| struct max9867_priv *max9867 = dev_get_drvdata(dev); |
| |
| /* Drop down to power saving mode when system is suspended */ |
| regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, |
| MAX9867_SHTDOWN_MASK, ~MAX9867_SHTDOWN_MASK); |
| return 0; |
| } |
| |
| static int max9867_resume(struct device *dev) |
| { |
| struct max9867_priv *max9867 = dev_get_drvdata(dev); |
| |
| regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, |
| MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); |
| return 0; |
| } |
| #endif |
| |
| 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), |
| .idle_bias_on = 1, |
| .use_pmdown_time = 1, |
| .endianness = 1, |
| .non_legacy_dai_naming = 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 reg_default max9867_reg[] = { |
| { 0x04, 0x00 }, |
| { 0x05, 0x00 }, |
| { 0x06, 0x00 }, |
| { 0x07, 0x00 }, |
| { 0x08, 0x00 }, |
| { 0x09, 0x00 }, |
| { 0x0A, 0x00 }, |
| { 0x0B, 0x00 }, |
| { 0x0C, 0x00 }, |
| { 0x0D, 0x00 }, |
| { 0x0E, 0x00 }, |
| { 0x0F, 0x00 }, |
| { 0x10, 0x00 }, |
| { 0x11, 0x00 }, |
| { 0x12, 0x00 }, |
| { 0x13, 0x00 }, |
| { 0x14, 0x00 }, |
| { 0x15, 0x00 }, |
| { 0x16, 0x00 }, |
| { 0x17, 0x00 }, |
| }; |
| |
| static const struct regmap_config max9867_regmap = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = MAX9867_REVISION, |
| .reg_defaults = max9867_reg, |
| .num_reg_defaults = ARRAY_SIZE(max9867_reg), |
| .volatile_reg = max9867_volatile_register, |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| static int max9867_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct max9867_priv *max9867; |
| int ret = 0, 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; |
| } |
| return ret; |
| } |
| |
| static const struct i2c_device_id max9867_i2c_id[] = { |
| { "max9867", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, max9867_i2c_id); |
| |
| static const struct of_device_id max9867_of_match[] = { |
| { .compatible = "maxim,max9867", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, max9867_of_match); |
| |
| static const struct dev_pm_ops max9867_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS(max9867_suspend, max9867_resume) |
| }; |
| |
| static struct i2c_driver max9867_i2c_driver = { |
| .driver = { |
| .name = "max9867", |
| .of_match_table = of_match_ptr(max9867_of_match), |
| .pm = &max9867_pm_ops, |
| }, |
| .probe = max9867_i2c_probe, |
| .id_table = max9867_i2c_id, |
| }; |
| |
| module_i2c_driver(max9867_i2c_driver); |
| |
| MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); |
| MODULE_DESCRIPTION("ALSA SoC MAX9867 driver"); |
| MODULE_LICENSE("GPL"); |