/* * es8328.c -- ES8328 ALSA SoC Audio driver * * Copyright 2014 Sutajio Ko-Usagi PTE LTD * * Author: Sean Cross * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include "es8328.h" #define ES8328_SYSCLK_RATE_1X 11289600 #define ES8328_SYSCLK_RATE_2X 22579200 /* Run the codec at 22.5792 or 11.2896 MHz to support these rates */ static struct { int rate; u8 ratio; } mclk_ratios[] = { { 8000, 9 }, {11025, 7 }, {22050, 4 }, {44100, 2 }, }; /* regulator supplies for sgtl5000, VDDD is an optional external supply */ enum sgtl5000_regulator_supplies { DVDD, AVDD, PVDD, HPVDD, ES8328_SUPPLY_NUM }; /* vddd is optional supply */ static const char * const supply_names[ES8328_SUPPLY_NUM] = { "DVDD", "AVDD", "PVDD", "HPVDD", }; #define ES8328_RATES (SNDRV_PCM_RATE_44100 | \ SNDRV_PCM_RATE_22050 | \ SNDRV_PCM_RATE_11025) #define ES8328_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) struct es8328_priv { struct regmap *regmap; struct clk *clk; int playback_fs; bool deemph; struct regulator_bulk_data supplies[ES8328_SUPPLY_NUM]; }; /* * ES8328 Controls */ static const char * const adcpol_txt[] = {"Normal", "L Invert", "R Invert", "L + R Invert"}; static SOC_ENUM_SINGLE_DECL(adcpol, ES8328_ADCCONTROL6, 6, adcpol_txt); static const DECLARE_TLV_DB_SCALE(play_tlv, -3000, 100, 0); static const DECLARE_TLV_DB_SCALE(dac_adc_tlv, -9600, 50, 0); static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0); static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0); static const int deemph_settings[] = { 0, 32000, 44100, 48000 }; static int es8328_set_deemph(struct snd_soc_codec *codec) { struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec); int val, i, best; /* * If we're using deemphasis select the nearest available sample * rate. */ if (es8328->deemph) { best = 1; for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { if (abs(deemph_settings[i] - es8328->playback_fs) < abs(deemph_settings[best] - es8328->playback_fs)) best = i; } val = best << 1; } else { val = 0; } dev_dbg(codec->dev, "Set deemphasis %d\n", val); return snd_soc_update_bits(codec, ES8328_DACCONTROL6, 0x6, val); } static int es8328_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec); ucontrol->value.integer.value[0] = es8328->deemph; return 0; } static int es8328_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec); int deemph = ucontrol->value.integer.value[0]; int ret; if (deemph > 1) return -EINVAL; ret = es8328_set_deemph(codec); if (ret < 0) return ret; es8328->deemph = deemph; return 0; } static const struct snd_kcontrol_new es8328_snd_controls[] = { SOC_DOUBLE_R_TLV("Capture Digital Volume", ES8328_ADCCONTROL8, ES8328_ADCCONTROL9, 0, 0xc0, 1, dac_adc_tlv), SOC_SINGLE("Capture ZC Switch", ES8328_ADCCONTROL7, 6, 1, 0), SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, es8328_get_deemph, es8328_put_deemph), SOC_ENUM("Capture Polarity", adcpol), SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", ES8328_DACCONTROL17, 3, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", ES8328_DACCONTROL19, 3, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", ES8328_DACCONTROL18, 3, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", ES8328_DACCONTROL20, 3, 7, 1, bypass_tlv), SOC_DOUBLE_R_TLV("PCM Volume", ES8328_LDACVOL, ES8328_RDACVOL, 0, ES8328_DACVOL_MAX, 1, dac_adc_tlv), SOC_DOUBLE_R_TLV("Output 1 Playback Volume", ES8328_LOUT1VOL, ES8328_ROUT1VOL, 0, ES8328_OUT1VOL_MAX, 0, play_tlv), SOC_DOUBLE_R_TLV("Output 2 Playback Volume", ES8328_LOUT2VOL, ES8328_ROUT2VOL, 0, ES8328_OUT2VOL_MAX, 0, play_tlv), SOC_DOUBLE_TLV("Mic PGA Volume", ES8328_ADCCONTROL1, 4, 0, 8, 0, mic_tlv), }; /* * DAPM Controls */ static const char * const es8328_line_texts[] = { "Line 1", "Line 2", "PGA", "Differential"}; static const struct soc_enum es8328_lline_enum = SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 3, ARRAY_SIZE(es8328_line_texts), es8328_line_texts); static const struct snd_kcontrol_new es8328_left_line_controls = SOC_DAPM_ENUM("Route", es8328_lline_enum); static const struct soc_enum es8328_rline_enum = SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 0, ARRAY_SIZE(es8328_line_texts), es8328_line_texts); static const struct snd_kcontrol_new es8328_right_line_controls = SOC_DAPM_ENUM("Route", es8328_lline_enum); /* Left Mixer */ static const struct snd_kcontrol_new es8328_left_mixer_controls[] = { SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL17, 8, 1, 0), SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL17, 7, 1, 0), SOC_DAPM_SINGLE("Right Playback Switch", ES8328_DACCONTROL18, 8, 1, 0), SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL18, 7, 1, 0), }; /* Right Mixer */ static const struct snd_kcontrol_new es8328_right_mixer_controls[] = { SOC_DAPM_SINGLE("Left Playback Switch", ES8328_DACCONTROL19, 8, 1, 0), SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL19, 7, 1, 0), SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL20, 8, 1, 0), SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL20, 7, 1, 0), }; static const char * const es8328_pga_sel[] = { "Line 1", "Line 2", "Line 3", "Differential"}; /* Left PGA Mux */ static const struct soc_enum es8328_lpga_enum = SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 6, ARRAY_SIZE(es8328_pga_sel), es8328_pga_sel); static const struct snd_kcontrol_new es8328_left_pga_controls = SOC_DAPM_ENUM("Route", es8328_lpga_enum); /* Right PGA Mux */ static const struct soc_enum es8328_rpga_enum = SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 4, ARRAY_SIZE(es8328_pga_sel), es8328_pga_sel); static const struct snd_kcontrol_new es8328_right_pga_controls = SOC_DAPM_ENUM("Route", es8328_rpga_enum); /* Differential Mux */ static const char * const es8328_diff_sel[] = {"Line 1", "Line 2"}; static SOC_ENUM_SINGLE_DECL(diffmux, ES8328_ADCCONTROL3, 7, es8328_diff_sel); static const struct snd_kcontrol_new es8328_diffmux_controls = SOC_DAPM_ENUM("Route", diffmux); /* Mono ADC Mux */ static const char * const es8328_mono_mux[] = {"Stereo", "Mono (Left)", "Mono (Right)", "Digital Mono"}; static SOC_ENUM_SINGLE_DECL(monomux, ES8328_ADCCONTROL3, 3, es8328_mono_mux); static const struct snd_kcontrol_new es8328_monomux_controls = SOC_DAPM_ENUM("Route", monomux); static const struct snd_soc_dapm_widget es8328_dapm_widgets[] = { SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, &es8328_diffmux_controls), SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, &es8328_monomux_controls), SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, &es8328_monomux_controls), SND_SOC_DAPM_MUX("Left PGA Mux", ES8328_ADCPOWER, ES8328_ADCPOWER_AINL_OFF, 1, &es8328_left_pga_controls), SND_SOC_DAPM_MUX("Right PGA Mux", ES8328_ADCPOWER, ES8328_ADCPOWER_AINR_OFF, 1, &es8328_right_pga_controls), SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, &es8328_left_line_controls), SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, &es8328_right_line_controls), SND_SOC_DAPM_ADC("Right ADC", "Right Capture", ES8328_ADCPOWER, ES8328_ADCPOWER_ADCR_OFF, 1), SND_SOC_DAPM_ADC("Left ADC", "Left Capture", ES8328_ADCPOWER, ES8328_ADCPOWER_ADCL_OFF, 1), SND_SOC_DAPM_SUPPLY("Mic Bias", ES8328_ADCPOWER, ES8328_ADCPOWER_MIC_BIAS_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("Mic Bias Gen", ES8328_ADCPOWER, ES8328_ADCPOWER_ADC_BIAS_GEN_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("DAC STM", ES8328_CHIPPOWER, ES8328_CHIPPOWER_DACSTM_RESET, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("ADC STM", ES8328_CHIPPOWER, ES8328_CHIPPOWER_ADCSTM_RESET, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("DAC DIG", ES8328_CHIPPOWER, ES8328_CHIPPOWER_DACDIG_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("ADC DIG", ES8328_CHIPPOWER, ES8328_CHIPPOWER_ADCDIG_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("DAC DLL", ES8328_CHIPPOWER, ES8328_CHIPPOWER_DACDLL_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("ADC DLL", ES8328_CHIPPOWER, ES8328_CHIPPOWER_ADCDLL_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("ADC Vref", ES8328_CHIPPOWER, ES8328_CHIPPOWER_ADCVREF_OFF, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("DAC Vref", ES8328_CHIPPOWER, ES8328_CHIPPOWER_DACVREF_OFF, 1, NULL, 0), SND_SOC_DAPM_DAC("Right DAC", "Right Playback", ES8328_DACPOWER, ES8328_DACPOWER_RDAC_OFF, 1), SND_SOC_DAPM_DAC("Left DAC", "Left Playback", ES8328_DACPOWER, ES8328_DACPOWER_LDAC_OFF, 1), SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, &es8328_left_mixer_controls[0], ARRAY_SIZE(es8328_left_mixer_controls)), SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, &es8328_right_mixer_controls[0], ARRAY_SIZE(es8328_right_mixer_controls)), SND_SOC_DAPM_PGA("Right Out 2", ES8328_DACPOWER, ES8328_DACPOWER_ROUT2_ON, 0, NULL, 0), SND_SOC_DAPM_PGA("Left Out 2", ES8328_DACPOWER, ES8328_DACPOWER_LOUT2_ON, 0, NULL, 0), SND_SOC_DAPM_PGA("Right Out 1", ES8328_DACPOWER, ES8328_DACPOWER_ROUT1_ON, 0, NULL, 0), SND_SOC_DAPM_PGA("Left Out 1", ES8328_DACPOWER, ES8328_DACPOWER_LOUT1_ON, 0, NULL, 0), SND_SOC_DAPM_OUTPUT("LOUT1"), SND_SOC_DAPM_OUTPUT("ROUT1"), SND_SOC_DAPM_OUTPUT("LOUT2"), SND_SOC_DAPM_OUTPUT("ROUT2"), SND_SOC_DAPM_INPUT("LINPUT1"), SND_SOC_DAPM_INPUT("LINPUT2"), SND_SOC_DAPM_INPUT("RINPUT1"), SND_SOC_DAPM_INPUT("RINPUT2"), }; static const struct snd_soc_dapm_route es8328_dapm_routes[] = { { "Left Line Mux", "Line 1", "LINPUT1" }, { "Left Line Mux", "Line 2", "LINPUT2" }, { "Left Line Mux", "PGA", "Left PGA Mux" }, { "Left Line Mux", "Differential", "Differential Mux" }, { "Right Line Mux", "Line 1", "RINPUT1" }, { "Right Line Mux", "Line 2", "RINPUT2" }, { "Right Line Mux", "PGA", "Right PGA Mux" }, { "Right Line Mux", "Differential", "Differential Mux" }, { "Left PGA Mux", "Line 1", "LINPUT1" }, { "Left PGA Mux", "Line 2", "LINPUT2" }, { "Left PGA Mux", "Differential", "Differential Mux" }, { "Right PGA Mux", "Line 1", "RINPUT1" }, { "Right PGA Mux", "Line 2", "RINPUT2" }, { "Right PGA Mux", "Differential", "Differential Mux" }, { "Differential Mux", "Line 1", "LINPUT1" }, { "Differential Mux", "Line 1", "RINPUT1" }, { "Differential Mux", "Line 2", "LINPUT2" }, { "Differential Mux", "Line 2", "RINPUT2" }, { "Left ADC Mux", "Stereo", "Left PGA Mux" }, { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" }, { "Left ADC Mux", "Digital Mono", "Left PGA Mux" }, { "Right ADC Mux", "Stereo", "Right PGA Mux" }, { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" }, { "Right ADC Mux", "Digital Mono", "Right PGA Mux" }, { "Left ADC", NULL, "Left ADC Mux" }, { "Right ADC", NULL, "Right ADC Mux" }, { "ADC DIG", NULL, "ADC STM" }, { "ADC DIG", NULL, "ADC Vref" }, { "ADC DIG", NULL, "ADC DLL" }, { "Left ADC", NULL, "ADC DIG" }, { "Right ADC", NULL, "ADC DIG" }, { "Mic Bias", NULL, "Mic Bias Gen" }, { "Left Line Mux", "Line 1", "LINPUT1" }, { "Left Line Mux", "Line 2", "LINPUT2" }, { "Left Line Mux", "PGA", "Left PGA Mux" }, { "Left Line Mux", "Differential", "Differential Mux" }, { "Right Line Mux", "Line 1", "RINPUT1" }, { "Right Line Mux", "Line 2", "RINPUT2" }, { "Right Line Mux", "PGA", "Right PGA Mux" }, { "Right Line Mux", "Differential", "Differential Mux" }, { "Left Out 1", NULL, "Left DAC" }, { "Right Out 1", NULL, "Right DAC" }, { "Left Out 2", NULL, "Left DAC" }, { "Right Out 2", NULL, "Right DAC" }, { "Left Mixer", "Playback Switch", "Left DAC" }, { "Left Mixer", "Left Bypass Switch", "Left Line Mux" }, { "Left Mixer", "Right Playback Switch", "Right DAC" }, { "Left Mixer", "Right Bypass Switch", "Right Line Mux" }, { "Right Mixer", "Left Playback Switch", "Left DAC" }, { "Right Mixer", "Left Bypass Switch", "Left Line Mux" }, { "Right Mixer", "Playback Switch", "Right DAC" }, { "Right Mixer", "Right Bypass Switch", "Right Line Mux" }, { "DAC DIG", NULL, "DAC STM" }, { "DAC DIG", NULL, "DAC Vref" }, { "DAC DIG", NULL, "DAC DLL" }, { "Left DAC", NULL, "DAC DIG" }, { "Right DAC", NULL, "DAC DIG" }, { "Left Out 1", NULL, "Left Mixer" }, { "LOUT1", NULL, "Left Out 1" }, { "Right Out 1", NULL, "Right Mixer" }, { "ROUT1", NULL, "Right Out 1" }, { "Left Out 2", NULL, "Left Mixer" }, { "LOUT2", NULL, "Left Out 2" }, { "Right Out 2", NULL, "Right Mixer" }, { "ROUT2", NULL, "Right Out 2" }, }; static int es8328_mute(struct snd_soc_dai *dai, int mute) { return snd_soc_update_bits(dai->codec, ES8328_DACCONTROL3, ES8328_DACCONTROL3_DACMUTE, mute ? ES8328_DACCONTROL3_DACMUTE : 0); } static int es8328_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec); int clk_rate; int i; int reg; u8 ratio; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) reg = ES8328_DACCONTROL2; else reg = ES8328_ADCCONTROL5; clk_rate = clk_get_rate(es8328->clk); if ((clk_rate != ES8328_SYSCLK_RATE_1X) && (clk_rate != ES8328_SYSCLK_RATE_2X)) { dev_err(codec->dev, "%s: clock is running at %d Hz, not %d or %d Hz\n", __func__, clk_rate, ES8328_SYSCLK_RATE_1X, ES8328_SYSCLK_RATE_2X); return -EINVAL; } /* find master mode MCLK to sampling frequency ratio */ ratio = mclk_ratios[0].rate; for (i = 1; i < ARRAY_SIZE(mclk_ratios); i++) if (params_rate(params) <= mclk_ratios[i].rate) ratio = mclk_ratios[i].ratio; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { es8328->playback_fs = params_rate(params); es8328_set_deemph(codec); } return snd_soc_update_bits(codec, reg, ES8328_RATEMASK, ratio); } static int es8328_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec); int clk_rate; u8 mode = ES8328_DACCONTROL1_DACWL_16; /* set master/slave audio interface */ if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBM_CFM) return -EINVAL; /* interface format */ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: mode |= ES8328_DACCONTROL1_DACFORMAT_I2S; break; case SND_SOC_DAIFMT_RIGHT_J: mode |= ES8328_DACCONTROL1_DACFORMAT_RJUST; break; case SND_SOC_DAIFMT_LEFT_J: mode |= ES8328_DACCONTROL1_DACFORMAT_LJUST; break; default: return -EINVAL; } /* clock inversion */ if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) return -EINVAL; snd_soc_write(codec, ES8328_DACCONTROL1, mode); snd_soc_write(codec, ES8328_ADCCONTROL4, mode); /* Master serial port mode, with BCLK generated automatically */ clk_rate = clk_get_rate(es8328->clk); if (clk_rate == ES8328_SYSCLK_RATE_1X) snd_soc_write(codec, ES8328_MASTERMODE, ES8328_MASTERMODE_MSC); else snd_soc_write(codec, ES8328_MASTERMODE, ES8328_MASTERMODE_MCLKDIV2 | ES8328_MASTERMODE_MSC); return 0; } static int es8328_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { switch (level) { case SND_SOC_BIAS_ON: break; case SND_SOC_BIAS_PREPARE: /* VREF, VMID=2x50k, digital enabled */ snd_soc_write(codec, ES8328_CHIPPOWER, 0); snd_soc_update_bits(codec, ES8328_CONTROL1, ES8328_CONTROL1_VMIDSEL_MASK | ES8328_CONTROL1_ENREF, ES8328_CONTROL1_VMIDSEL_50k | ES8328_CONTROL1_ENREF); break; case SND_SOC_BIAS_STANDBY: if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { snd_soc_update_bits(codec, ES8328_CONTROL1, ES8328_CONTROL1_VMIDSEL_MASK | ES8328_CONTROL1_ENREF, ES8328_CONTROL1_VMIDSEL_5k | ES8328_CONTROL1_ENREF); /* Charge caps */ msleep(100); } snd_soc_write(codec, ES8328_CONTROL2, ES8328_CONTROL2_OVERCURRENT_ON | ES8328_CONTROL2_THERMAL_SHUTDOWN_ON); /* VREF, VMID=2*500k, digital stopped */ snd_soc_update_bits(codec, ES8328_CONTROL1, ES8328_CONTROL1_VMIDSEL_MASK | ES8328_CONTROL1_ENREF, ES8328_CONTROL1_VMIDSEL_500k | ES8328_CONTROL1_ENREF); break; case SND_SOC_BIAS_OFF: snd_soc_update_bits(codec, ES8328_CONTROL1, ES8328_CONTROL1_VMIDSEL_MASK | ES8328_CONTROL1_ENREF, 0); break; } return 0; } static const struct snd_soc_dai_ops es8328_dai_ops = { .hw_params = es8328_hw_params, .digital_mute = es8328_mute, .set_fmt = es8328_set_dai_fmt, }; static struct snd_soc_dai_driver es8328_dai = { .name = "es8328-hifi-analog", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = ES8328_RATES, .formats = ES8328_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = ES8328_RATES, .formats = ES8328_FORMATS, }, .ops = &es8328_dai_ops, }; static int es8328_suspend(struct snd_soc_codec *codec) { struct es8328_priv *es8328; int ret; es8328 = snd_soc_codec_get_drvdata(codec); clk_disable_unprepare(es8328->clk); ret = regulator_bulk_disable(ARRAY_SIZE(es8328->supplies), es8328->supplies); if (ret) { dev_err(codec->dev, "unable to disable regulators\n"); return ret; } return 0; } static int es8328_resume(struct snd_soc_codec *codec) { struct regmap *regmap = dev_get_regmap(codec->dev, NULL); struct es8328_priv *es8328; int ret; es8328 = snd_soc_codec_get_drvdata(codec); ret = clk_prepare_enable(es8328->clk); if (ret) { dev_err(codec->dev, "unable to enable clock\n"); return ret; } ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies), es8328->supplies); if (ret) { dev_err(codec->dev, "unable to enable regulators\n"); return ret; } regcache_mark_dirty(regmap); ret = regcache_sync(regmap); if (ret) { dev_err(codec->dev, "unable to sync regcache\n"); return ret; } return 0; } static int es8328_codec_probe(struct snd_soc_codec *codec) { struct es8328_priv *es8328; int ret; es8328 = snd_soc_codec_get_drvdata(codec); ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies), es8328->supplies); if (ret) { dev_err(codec->dev, "unable to enable regulators\n"); return ret; } /* Setup clocks */ es8328->clk = devm_clk_get(codec->dev, NULL); if (IS_ERR(es8328->clk)) { dev_err(codec->dev, "codec clock missing or invalid\n"); ret = PTR_ERR(es8328->clk); goto clk_fail; } ret = clk_prepare_enable(es8328->clk); if (ret) { dev_err(codec->dev, "unable to prepare codec clk\n"); goto clk_fail; } return 0; clk_fail: regulator_bulk_disable(ARRAY_SIZE(es8328->supplies), es8328->supplies); return ret; } static int es8328_remove(struct snd_soc_codec *codec) { struct es8328_priv *es8328; es8328 = snd_soc_codec_get_drvdata(codec); if (es8328->clk) clk_disable_unprepare(es8328->clk); regulator_bulk_disable(ARRAY_SIZE(es8328->supplies), es8328->supplies); return 0; } const struct regmap_config es8328_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = ES8328_REG_MAX, .cache_type = REGCACHE_RBTREE, }; EXPORT_SYMBOL_GPL(es8328_regmap_config); static struct snd_soc_codec_driver es8328_codec_driver = { .probe = es8328_codec_probe, .suspend = es8328_suspend, .resume = es8328_resume, .remove = es8328_remove, .set_bias_level = es8328_set_bias_level, .suspend_bias_off = true, .controls = es8328_snd_controls, .num_controls = ARRAY_SIZE(es8328_snd_controls), .dapm_widgets = es8328_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(es8328_dapm_widgets), .dapm_routes = es8328_dapm_routes, .num_dapm_routes = ARRAY_SIZE(es8328_dapm_routes), }; int es8328_probe(struct device *dev, struct regmap *regmap) { struct es8328_priv *es8328; int ret; int i; if (IS_ERR(regmap)) return PTR_ERR(regmap); es8328 = devm_kzalloc(dev, sizeof(*es8328), GFP_KERNEL); if (es8328 == NULL) return -ENOMEM; es8328->regmap = regmap; for (i = 0; i < ARRAY_SIZE(es8328->supplies); i++) es8328->supplies[i].supply = supply_names[i]; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(es8328->supplies), es8328->supplies); if (ret) { dev_err(dev, "unable to get regulators\n"); return ret; } dev_set_drvdata(dev, es8328); return snd_soc_register_codec(dev, &es8328_codec_driver, &es8328_dai, 1); } EXPORT_SYMBOL_GPL(es8328_probe); MODULE_DESCRIPTION("ASoC ES8328 driver"); MODULE_AUTHOR("Sean Cross "); MODULE_LICENSE("GPL");