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linux/sound/soc/codecs/es8328.c
John Keeping f2ed04a431 ASoC: es8328: Use single R/W for regmap 
The chip only supports single reads and writes.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-10 18:56:01 +01:00

771 lines
21 KiB
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/*
* 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 struct {
int rate;
unsigned int val;
} deemph_settings[] = {
{ 0, ES8328_DACCONTROL6_DEEMPH_OFF },
{ 32000, ES8328_DACCONTROL6_DEEMPH_32k },
{ 44100, ES8328_DACCONTROL6_DEEMPH_44_1k },
{ 48000, ES8328_DACCONTROL6_DEEMPH_48k },
};
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 = 0;
for (i = 1; i < ARRAY_SIZE(deemph_settings); i++) {
if (abs(deemph_settings[i].rate - es8328->playback_fs) <
abs(deemph_settings[best].rate - es8328->playback_fs))
best = i;
}
val = deemph_settings[best].val;
} else {
val = ES8328_DACCONTROL6_DEEMPH_OFF;
}
dev_dbg(codec->dev, "Set deemphasis %d\n", val);
return snd_soc_update_bits(codec, ES8328_DACCONTROL6,
ES8328_DACCONTROL6_DEEMPH_MASK, 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);
unsigned 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, 7, 1, 0),
SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL17, 6, 1, 0),
SOC_DAPM_SINGLE("Right Playback Switch", ES8328_DACCONTROL18, 7, 1, 0),
SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL18, 6, 1, 0),
};
/* Right Mixer */
static const struct snd_kcontrol_new es8328_right_mixer_controls[] = {
SOC_DAPM_SINGLE("Left Playback Switch", ES8328_DACCONTROL19, 7, 1, 0),
SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL19, 6, 1, 0),
SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL20, 7, 1, 0),
SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL20, 6, 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 = clk_get_rate(es8328->clk);
int i;
int reg;
int val;
u8 ratio;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
reg = ES8328_DACCONTROL2;
else
reg = ES8328_ADCCONTROL5;
switch (clk_rate) {
case ES8328_SYSCLK_RATE_1X:
val = 0;
break;
case ES8328_SYSCLK_RATE_2X:
val = ES8328_MASTERMODE_MCLKDIV2;
break;
default:
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;
}
ret = snd_soc_update_bits(codec, ES8328_MASTERMODE,
ES8328_MASTERMODE_MCLKDIV2, val);
if (ret < 0)
return ret;
/* 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;
u8 dac_mode = ES8328_DACCONTROL1_DACWL_16;
u8 adc_mode = ES8328_ADCCONTROL4_ADCWL_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:
dac_mode |= ES8328_DACCONTROL1_DACFORMAT_I2S;
adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_I2S;
break;
case SND_SOC_DAIFMT_RIGHT_J:
dac_mode |= ES8328_DACCONTROL1_DACFORMAT_RJUST;
adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_RJUST;
break;
case SND_SOC_DAIFMT_LEFT_J:
dac_mode |= ES8328_DACCONTROL1_DACFORMAT_LJUST;
adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_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, dac_mode);
snd_soc_write(codec, ES8328_ADCCONTROL4, adc_mode);
/* Master serial port mode, with BCLK generated automatically */
snd_soc_update_bits(codec, ES8328_MASTERMODE,
ES8328_MASTERMODE_MSC, 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 (snd_soc_codec_get_bias_level(codec) == 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,
.use_single_rw = true,
};
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");
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