diff options
Diffstat (limited to 'kernel/sound/soc/codecs/es8328.c')
| -rw-r--r-- | kernel/sound/soc/codecs/es8328.c | 756 |
1 files changed, 756 insertions, 0 deletions
diff --git a/kernel/sound/soc/codecs/es8328.c b/kernel/sound/soc/codecs/es8328.c new file mode 100644 index 000000000..c5f35a07e --- /dev/null +++ b/kernel/sound/soc/codecs/es8328.c @@ -0,0 +1,756 @@ +/* + * es8328.c -- ES8328 ALSA SoC Audio driver + * + * Copyright 2014 Sutajio Ko-Usagi PTE LTD + * + * Author: Sean Cross <xobs@kosagi.com> + * + * 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/clk.h> +#include <linux/delay.h> +#include <linux/of_device.h> +#include <linux/module.h> +#include <linux/pm.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#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; + } + codec->dapm.bias_level = level; + 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 <xobs@kosagi.com>"); +MODULE_LICENSE("GPL"); |