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linux-sg2042/sound/soc/codecs/pcm3168a.c

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/*
* PCM3168A codec driver
*
* Copyright (C) 2015 Imagination Technologies Ltd.
*
* Author: Damien Horsley <Damien.Horsley@imgtec.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions 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/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "pcm3168a.h"
#define PCM3168A_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
#define PCM3168A_FMT_I2S 0x0
#define PCM3168A_FMT_LEFT_J 0x1
#define PCM3168A_FMT_RIGHT_J 0x2
#define PCM3168A_FMT_RIGHT_J_16 0x3
#define PCM3168A_FMT_DSP_A 0x4
#define PCM3168A_FMT_DSP_B 0x5
#define PCM3168A_FMT_DSP_MASK 0x4
#define PCM3168A_NUM_SUPPLIES 6
static const char *const pcm3168a_supply_names[PCM3168A_NUM_SUPPLIES] = {
"VDD1",
"VDD2",
"VCCAD1",
"VCCAD2",
"VCCDA1",
"VCCDA2"
};
struct pcm3168a_priv {
struct regulator_bulk_data supplies[PCM3168A_NUM_SUPPLIES];
struct regmap *regmap;
struct clk *scki;
bool adc_master_mode;
bool dac_master_mode;
unsigned long sysclk;
unsigned int adc_fmt;
unsigned int dac_fmt;
};
static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_d1_roll_off, PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_FLT_SHIFT, pcm3168a_roll_off);
static SOC_ENUM_SINGLE_DECL(pcm3168a_d2_roll_off, PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_FLT_SHIFT + 1, pcm3168a_roll_off);
static SOC_ENUM_SINGLE_DECL(pcm3168a_d3_roll_off, PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_FLT_SHIFT + 2, pcm3168a_roll_off);
static SOC_ENUM_SINGLE_DECL(pcm3168a_d4_roll_off, PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_FLT_SHIFT + 3, pcm3168a_roll_off);
static const char *const pcm3168a_volume_type[] = {
"Individual", "Master + Individual" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_volume_type, PCM3168A_DAC_ATT_DEMP_ZF,
PCM3168A_DAC_ATMDDA_SHIFT, pcm3168a_volume_type);
static const char *const pcm3168a_att_speed_mult[] = { "2048", "4096" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_att_mult, PCM3168A_DAC_ATT_DEMP_ZF,
PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_att_speed_mult);
static const char *const pcm3168a_demp[] = {
"Disabled", "48khz", "44.1khz", "32khz" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_demp, PCM3168A_DAC_ATT_DEMP_ZF,
PCM3168A_DAC_DEMP_SHIFT, pcm3168a_demp);
static const char *const pcm3168a_zf_func[] = {
"DAC 1/2/3/4 AND", "DAC 1/2/3/4 OR", "DAC 1/2/3 AND",
"DAC 1/2/3 OR", "DAC 4 AND", "DAC 4 OR" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_func, PCM3168A_DAC_ATT_DEMP_ZF,
PCM3168A_DAC_AZRO_SHIFT, pcm3168a_zf_func);
static const char *const pcm3168a_pol[] = { "Active High", "Active Low" };
static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_pol, PCM3168A_DAC_ATT_DEMP_ZF,
PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_pol);
static const char *const pcm3168a_con[] = { "Differential", "Single-Ended" };
static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc1_con, PCM3168A_ADC_SEAD,
0, 1, pcm3168a_con);
static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc2_con, PCM3168A_ADC_SEAD,
2, 3, pcm3168a_con);
static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc3_con, PCM3168A_ADC_SEAD,
4, 5, pcm3168a_con);
static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_volume_type, PCM3168A_ADC_ATT_OVF,
PCM3168A_ADC_ATMDAD_SHIFT, pcm3168a_volume_type);
static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_att_mult, PCM3168A_ADC_ATT_OVF,
PCM3168A_ADC_ATSPAD_SHIFT, pcm3168a_att_speed_mult);
static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_ov_pol, PCM3168A_ADC_ATT_OVF,
PCM3168A_ADC_OVFP_SHIFT, pcm3168a_pol);
/* -100db to 0db, register values 0-54 cause mute */
static const DECLARE_TLV_DB_SCALE(pcm3168a_dac_tlv, -10050, 50, 1);
/* -100db to 20db, register values 0-14 cause mute */
static const DECLARE_TLV_DB_SCALE(pcm3168a_adc_tlv, -10050, 50, 1);
static const struct snd_kcontrol_new pcm3168a_snd_controls[] = {
SOC_SINGLE("DAC Power-Save Switch", PCM3168A_DAC_PWR_MST_FMT,
PCM3168A_DAC_PSMDA_SHIFT, 1, 1),
SOC_ENUM("DAC1 Digital Filter roll-off", pcm3168a_d1_roll_off),
SOC_ENUM("DAC2 Digital Filter roll-off", pcm3168a_d2_roll_off),
SOC_ENUM("DAC3 Digital Filter roll-off", pcm3168a_d3_roll_off),
SOC_ENUM("DAC4 Digital Filter roll-off", pcm3168a_d4_roll_off),
SOC_DOUBLE("DAC1 Invert Switch", PCM3168A_DAC_INV, 0, 1, 1, 0),
SOC_DOUBLE("DAC2 Invert Switch", PCM3168A_DAC_INV, 2, 3, 1, 0),
SOC_DOUBLE("DAC3 Invert Switch", PCM3168A_DAC_INV, 4, 5, 1, 0),
SOC_DOUBLE("DAC4 Invert Switch", PCM3168A_DAC_INV, 6, 7, 1, 0),
SOC_DOUBLE_STS("DAC1 Zero Flag", PCM3168A_DAC_ZERO, 0, 1, 1, 0),
SOC_DOUBLE_STS("DAC2 Zero Flag", PCM3168A_DAC_ZERO, 2, 3, 1, 0),
SOC_DOUBLE_STS("DAC3 Zero Flag", PCM3168A_DAC_ZERO, 4, 5, 1, 0),
SOC_DOUBLE_STS("DAC4 Zero Flag", PCM3168A_DAC_ZERO, 6, 7, 1, 0),
SOC_ENUM("DAC Volume Control Type", pcm3168a_dac_volume_type),
SOC_ENUM("DAC Volume Rate Multiplier", pcm3168a_dac_att_mult),
SOC_ENUM("DAC De-Emphasis", pcm3168a_dac_demp),
SOC_ENUM("DAC Zero Flag Function", pcm3168a_dac_zf_func),
SOC_ENUM("DAC Zero Flag Polarity", pcm3168a_dac_zf_pol),
SOC_SINGLE_RANGE_TLV("Master Playback Volume",
PCM3168A_DAC_VOL_MASTER, 0, 54, 255, 0,
pcm3168a_dac_tlv),
SOC_DOUBLE_R_RANGE_TLV("DAC1 Playback Volume",
PCM3168A_DAC_VOL_CHAN_START,
PCM3168A_DAC_VOL_CHAN_START + 1,
0, 54, 255, 0, pcm3168a_dac_tlv),
SOC_DOUBLE_R_RANGE_TLV("DAC2 Playback Volume",
PCM3168A_DAC_VOL_CHAN_START + 2,
PCM3168A_DAC_VOL_CHAN_START + 3,
0, 54, 255, 0, pcm3168a_dac_tlv),
SOC_DOUBLE_R_RANGE_TLV("DAC3 Playback Volume",
PCM3168A_DAC_VOL_CHAN_START + 4,
PCM3168A_DAC_VOL_CHAN_START + 5,
0, 54, 255, 0, pcm3168a_dac_tlv),
SOC_DOUBLE_R_RANGE_TLV("DAC4 Playback Volume",
PCM3168A_DAC_VOL_CHAN_START + 6,
PCM3168A_DAC_VOL_CHAN_START + 7,
0, 54, 255, 0, pcm3168a_dac_tlv),
SOC_SINGLE("ADC1 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_BYP_SHIFT, 1, 1),
SOC_SINGLE("ADC2 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_BYP_SHIFT + 1, 1, 1),
SOC_SINGLE("ADC3 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_BYP_SHIFT + 2, 1, 1),
SOC_ENUM("ADC1 Connection Type", pcm3168a_adc1_con),
SOC_ENUM("ADC2 Connection Type", pcm3168a_adc2_con),
SOC_ENUM("ADC3 Connection Type", pcm3168a_adc3_con),
SOC_DOUBLE("ADC1 Invert Switch", PCM3168A_ADC_INV, 0, 1, 1, 0),
SOC_DOUBLE("ADC2 Invert Switch", PCM3168A_ADC_INV, 2, 3, 1, 0),
SOC_DOUBLE("ADC3 Invert Switch", PCM3168A_ADC_INV, 4, 5, 1, 0),
SOC_DOUBLE("ADC1 Mute Switch", PCM3168A_ADC_MUTE, 0, 1, 1, 0),
SOC_DOUBLE("ADC2 Mute Switch", PCM3168A_ADC_MUTE, 2, 3, 1, 0),
SOC_DOUBLE("ADC3 Mute Switch", PCM3168A_ADC_MUTE, 4, 5, 1, 0),
SOC_DOUBLE_STS("ADC1 Overflow Flag", PCM3168A_ADC_OV, 0, 1, 1, 0),
SOC_DOUBLE_STS("ADC2 Overflow Flag", PCM3168A_ADC_OV, 2, 3, 1, 0),
SOC_DOUBLE_STS("ADC3 Overflow Flag", PCM3168A_ADC_OV, 4, 5, 1, 0),
SOC_ENUM("ADC Volume Control Type", pcm3168a_adc_volume_type),
SOC_ENUM("ADC Volume Rate Multiplier", pcm3168a_adc_att_mult),
SOC_ENUM("ADC Overflow Flag Polarity", pcm3168a_adc_ov_pol),
SOC_SINGLE_RANGE_TLV("Master Capture Volume",
PCM3168A_ADC_VOL_MASTER, 0, 14, 255, 0,
pcm3168a_adc_tlv),
SOC_DOUBLE_R_RANGE_TLV("ADC1 Capture Volume",
PCM3168A_ADC_VOL_CHAN_START,
PCM3168A_ADC_VOL_CHAN_START + 1,
0, 14, 255, 0, pcm3168a_adc_tlv),
SOC_DOUBLE_R_RANGE_TLV("ADC2 Capture Volume",
PCM3168A_ADC_VOL_CHAN_START + 2,
PCM3168A_ADC_VOL_CHAN_START + 3,
0, 14, 255, 0, pcm3168a_adc_tlv),
SOC_DOUBLE_R_RANGE_TLV("ADC3 Capture Volume",
PCM3168A_ADC_VOL_CHAN_START + 4,
PCM3168A_ADC_VOL_CHAN_START + 5,
0, 14, 255, 0, pcm3168a_adc_tlv)
};
static const struct snd_soc_dapm_widget pcm3168a_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC1", "Playback", PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_OPEDA_SHIFT, 1),
SND_SOC_DAPM_DAC("DAC2", "Playback", PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_OPEDA_SHIFT + 1, 1),
SND_SOC_DAPM_DAC("DAC3", "Playback", PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_OPEDA_SHIFT + 2, 1),
SND_SOC_DAPM_DAC("DAC4", "Playback", PCM3168A_DAC_OP_FLT,
PCM3168A_DAC_OPEDA_SHIFT + 3, 1),
SND_SOC_DAPM_OUTPUT("AOUT1L"),
SND_SOC_DAPM_OUTPUT("AOUT1R"),
SND_SOC_DAPM_OUTPUT("AOUT2L"),
SND_SOC_DAPM_OUTPUT("AOUT2R"),
SND_SOC_DAPM_OUTPUT("AOUT3L"),
SND_SOC_DAPM_OUTPUT("AOUT3R"),
SND_SOC_DAPM_OUTPUT("AOUT4L"),
SND_SOC_DAPM_OUTPUT("AOUT4R"),
SND_SOC_DAPM_ADC("ADC1", "Capture", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_PSVAD_SHIFT, 1),
SND_SOC_DAPM_ADC("ADC2", "Capture", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_PSVAD_SHIFT + 1, 1),
SND_SOC_DAPM_ADC("ADC3", "Capture", PCM3168A_ADC_PWR_HPFB,
PCM3168A_ADC_PSVAD_SHIFT + 2, 1),
SND_SOC_DAPM_INPUT("AIN1L"),
SND_SOC_DAPM_INPUT("AIN1R"),
SND_SOC_DAPM_INPUT("AIN2L"),
SND_SOC_DAPM_INPUT("AIN2R"),
SND_SOC_DAPM_INPUT("AIN3L"),
SND_SOC_DAPM_INPUT("AIN3R")
};
static const struct snd_soc_dapm_route pcm3168a_dapm_routes[] = {
/* Playback */
{ "AOUT1L", NULL, "DAC1" },
{ "AOUT1R", NULL, "DAC1" },
{ "AOUT2L", NULL, "DAC2" },
{ "AOUT2R", NULL, "DAC2" },
{ "AOUT3L", NULL, "DAC3" },
{ "AOUT3R", NULL, "DAC3" },
{ "AOUT4L", NULL, "DAC4" },
{ "AOUT4R", NULL, "DAC4" },
/* Capture */
{ "ADC1", NULL, "AIN1L" },
{ "ADC1", NULL, "AIN1R" },
{ "ADC2", NULL, "AIN2L" },
{ "ADC2", NULL, "AIN2R" },
{ "ADC3", NULL, "AIN3L" },
{ "ADC3", NULL, "AIN3R" }
};
static unsigned int pcm3168a_scki_ratios[] = {
768,
512,
384,
256,
192,
128
};
#define PCM3168A_NUM_SCKI_RATIOS_DAC ARRAY_SIZE(pcm3168a_scki_ratios)
#define PCM3168A_NUM_SCKI_RATIOS_ADC (ARRAY_SIZE(pcm3168a_scki_ratios) - 2)
#define PCM1368A_MAX_SYSCLK 36864000
static int pcm3168a_reset(struct pcm3168a_priv *pcm3168a)
{
int ret;
ret = regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE, 0);
if (ret)
return ret;
/* Internal reset is de-asserted after 3846 SCKI cycles */
msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
return regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE,
PCM3168A_MRST_MASK | PCM3168A_SRST_MASK);
}
static int pcm3168a_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
regmap_write(pcm3168a->regmap, PCM3168A_DAC_MUTE, mute ? 0xff : 0);
return 0;
}
static int pcm3168a_set_dai_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(dai->codec);
int ret;
if (freq > PCM1368A_MAX_SYSCLK)
return -EINVAL;
ret = clk_set_rate(pcm3168a->scki, freq);
if (ret)
return ret;
pcm3168a->sysclk = freq;
return 0;
}
static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai,
unsigned int format, bool dac)
{
struct snd_soc_codec *codec = dai->codec;
struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
u32 fmt, reg, mask, shift;
bool master_mode;
switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_LEFT_J:
fmt = PCM3168A_FMT_LEFT_J;
break;
case SND_SOC_DAIFMT_I2S:
fmt = PCM3168A_FMT_I2S;
break;
case SND_SOC_DAIFMT_RIGHT_J:
fmt = PCM3168A_FMT_RIGHT_J;
break;
case SND_SOC_DAIFMT_DSP_A:
fmt = PCM3168A_FMT_DSP_A;
break;
case SND_SOC_DAIFMT_DSP_B:
fmt = PCM3168A_FMT_DSP_B;
break;
default:
dev_err(codec->dev, "unsupported dai format\n");
return -EINVAL;
}
switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
master_mode = false;
break;
case SND_SOC_DAIFMT_CBM_CFM:
master_mode = true;
break;
default:
dev_err(codec->dev, "unsupported master/slave mode\n");
return -EINVAL;
}
switch (format & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
default:
return -EINVAL;
}
if (dac) {
reg = PCM3168A_DAC_PWR_MST_FMT;
mask = PCM3168A_DAC_FMT_MASK;
shift = PCM3168A_DAC_FMT_SHIFT;
pcm3168a->dac_master_mode = master_mode;
pcm3168a->dac_fmt = fmt;
} else {
reg = PCM3168A_ADC_MST_FMT;
mask = PCM3168A_ADC_FMTAD_MASK;
shift = PCM3168A_ADC_FMTAD_SHIFT;
pcm3168a->adc_master_mode = master_mode;
pcm3168a->adc_fmt = fmt;
}
regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
return 0;
}
static int pcm3168a_set_dai_fmt_dac(struct snd_soc_dai *dai,
unsigned int format)
{
return pcm3168a_set_dai_fmt(dai, format, true);
}
static int pcm3168a_set_dai_fmt_adc(struct snd_soc_dai *dai,
unsigned int format)
{
return pcm3168a_set_dai_fmt(dai, format, false);
}
static int pcm3168a_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 pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
bool tx, master_mode;
u32 val, mask, shift, reg;
unsigned int rate, fmt, ratio, max_ratio;
int i, min_frame_size;
snd_pcm_format_t format;
rate = params_rate(params);
format = params_format(params);
ratio = pcm3168a->sysclk / rate;
tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
if (tx) {
max_ratio = PCM3168A_NUM_SCKI_RATIOS_DAC;
reg = PCM3168A_DAC_PWR_MST_FMT;
mask = PCM3168A_DAC_MSDA_MASK;
shift = PCM3168A_DAC_MSDA_SHIFT;
master_mode = pcm3168a->dac_master_mode;
fmt = pcm3168a->dac_fmt;
} else {
max_ratio = PCM3168A_NUM_SCKI_RATIOS_ADC;
reg = PCM3168A_ADC_MST_FMT;
mask = PCM3168A_ADC_MSAD_MASK;
shift = PCM3168A_ADC_MSAD_SHIFT;
master_mode = pcm3168a->adc_master_mode;
fmt = pcm3168a->adc_fmt;
}
for (i = 0; i < max_ratio; i++) {
if (pcm3168a_scki_ratios[i] == ratio)
break;
}
if (i == max_ratio) {
dev_err(codec->dev, "unsupported sysclk ratio\n");
return -EINVAL;
}
min_frame_size = params_width(params) * 2;
switch (min_frame_size) {
case 32:
if (master_mode || (fmt != PCM3168A_FMT_RIGHT_J)) {
dev_err(codec->dev, "32-bit frames are supported only for slave mode using right justified\n");
return -EINVAL;
}
fmt = PCM3168A_FMT_RIGHT_J_16;
break;
case 48:
if (master_mode || (fmt & PCM3168A_FMT_DSP_MASK)) {
dev_err(codec->dev, "48-bit frames not supported in master mode, or slave mode using DSP\n");
return -EINVAL;
}
break;
case 64:
break;
default:
dev_err(codec->dev, "unsupported frame size: %d\n", min_frame_size);
return -EINVAL;
}
if (master_mode)
val = ((i + 1) << shift);
else
val = 0;
regmap_update_bits(pcm3168a->regmap, reg, mask, val);
if (tx) {
mask = PCM3168A_DAC_FMT_MASK;
shift = PCM3168A_DAC_FMT_SHIFT;
} else {
mask = PCM3168A_ADC_FMTAD_MASK;
shift = PCM3168A_ADC_FMTAD_SHIFT;
}
regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
return 0;
}
static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = {
.set_fmt = pcm3168a_set_dai_fmt_dac,
.set_sysclk = pcm3168a_set_dai_sysclk,
.hw_params = pcm3168a_hw_params,
.digital_mute = pcm3168a_digital_mute
};
static const struct snd_soc_dai_ops pcm3168a_adc_dai_ops = {
.set_fmt = pcm3168a_set_dai_fmt_adc,
.set_sysclk = pcm3168a_set_dai_sysclk,
.hw_params = pcm3168a_hw_params
};
static struct snd_soc_dai_driver pcm3168a_dais[] = {
{
.name = "pcm3168a-dac",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 8,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = PCM3168A_FORMATS
},
.ops = &pcm3168a_dac_dai_ops
},
{
.name = "pcm3168a-adc",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 6,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = PCM3168A_FORMATS
},
.ops = &pcm3168a_adc_dai_ops
},
};
static const struct reg_default pcm3168a_reg_default[] = {
{ PCM3168A_RST_SMODE, PCM3168A_MRST_MASK | PCM3168A_SRST_MASK },
{ PCM3168A_DAC_PWR_MST_FMT, 0x00 },
{ PCM3168A_DAC_OP_FLT, 0x00 },
{ PCM3168A_DAC_INV, 0x00 },
{ PCM3168A_DAC_MUTE, 0x00 },
{ PCM3168A_DAC_ZERO, 0x00 },
{ PCM3168A_DAC_ATT_DEMP_ZF, 0x00 },
{ PCM3168A_DAC_VOL_MASTER, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 1, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 2, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 3, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 4, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 5, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 6, 0xff },
{ PCM3168A_DAC_VOL_CHAN_START + 7, 0xff },
{ PCM3168A_ADC_SMODE, 0x00 },
{ PCM3168A_ADC_MST_FMT, 0x00 },
{ PCM3168A_ADC_PWR_HPFB, 0x00 },
{ PCM3168A_ADC_SEAD, 0x00 },
{ PCM3168A_ADC_INV, 0x00 },
{ PCM3168A_ADC_MUTE, 0x00 },
{ PCM3168A_ADC_OV, 0x00 },
{ PCM3168A_ADC_ATT_OVF, 0x00 },
{ PCM3168A_ADC_VOL_MASTER, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START + 1, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START + 2, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START + 3, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START + 4, 0xd3 },
{ PCM3168A_ADC_VOL_CHAN_START + 5, 0xd3 }
};
static bool pcm3168a_readable_register(struct device *dev, unsigned int reg)
{
if (reg >= PCM3168A_RST_SMODE)
return true;
else
return false;
}
static bool pcm3168a_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case PCM3168A_DAC_ZERO:
case PCM3168A_ADC_OV:
return true;
default:
return false;
}
}
static bool pcm3168a_writeable_register(struct device *dev, unsigned int reg)
{
if (reg < PCM3168A_RST_SMODE)
return false;
switch (reg) {
case PCM3168A_DAC_ZERO:
case PCM3168A_ADC_OV:
return false;
default:
return true;
}
}
const struct regmap_config pcm3168a_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = PCM3168A_ADC_VOL_CHAN_START + 5,
.reg_defaults = pcm3168a_reg_default,
.num_reg_defaults = ARRAY_SIZE(pcm3168a_reg_default),
.readable_reg = pcm3168a_readable_register,
.volatile_reg = pcm3168a_volatile_register,
.writeable_reg = pcm3168a_writeable_register,
.cache_type = REGCACHE_FLAT
};
EXPORT_SYMBOL_GPL(pcm3168a_regmap);
static const struct snd_soc_codec_driver pcm3168a_driver = {
.idle_bias_off = true,
.component_driver = {
.controls = pcm3168a_snd_controls,
.num_controls = ARRAY_SIZE(pcm3168a_snd_controls),
.dapm_widgets = pcm3168a_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm3168a_dapm_widgets),
.dapm_routes = pcm3168a_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm3168a_dapm_routes)
},
};
int pcm3168a_probe(struct device *dev, struct regmap *regmap)
{
struct pcm3168a_priv *pcm3168a;
int ret, i;
pcm3168a = devm_kzalloc(dev, sizeof(*pcm3168a), GFP_KERNEL);
if (pcm3168a == NULL)
return -ENOMEM;
dev_set_drvdata(dev, pcm3168a);
pcm3168a->scki = devm_clk_get(dev, "scki");
if (IS_ERR(pcm3168a->scki)) {
ret = PTR_ERR(pcm3168a->scki);
if (ret != -EPROBE_DEFER)
dev_err(dev, "failed to acquire clock 'scki': %d\n", ret);
return ret;
}
ret = clk_prepare_enable(pcm3168a->scki);
if (ret) {
dev_err(dev, "Failed to enable mclk: %d\n", ret);
return ret;
}
pcm3168a->sysclk = clk_get_rate(pcm3168a->scki);
for (i = 0; i < ARRAY_SIZE(pcm3168a->supplies); i++)
pcm3168a->supplies[i].supply = pcm3168a_supply_names[i];
ret = devm_regulator_bulk_get(dev,
ARRAY_SIZE(pcm3168a->supplies), pcm3168a->supplies);
if (ret) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "failed to request supplies: %d\n", ret);
goto err_clk;
}
ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
if (ret) {
dev_err(dev, "failed to enable supplies: %d\n", ret);
goto err_clk;
}
pcm3168a->regmap = regmap;
if (IS_ERR(pcm3168a->regmap)) {
ret = PTR_ERR(pcm3168a->regmap);
dev_err(dev, "failed to allocate regmap: %d\n", ret);
goto err_regulator;
}
ret = pcm3168a_reset(pcm3168a);
if (ret) {
dev_err(dev, "Failed to reset device: %d\n", ret);
goto err_regulator;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
ret = snd_soc_register_codec(dev, &pcm3168a_driver, pcm3168a_dais,
ARRAY_SIZE(pcm3168a_dais));
if (ret) {
dev_err(dev, "failed to register codec: %d\n", ret);
goto err_regulator;
}
return 0;
err_regulator:
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
err_clk:
clk_disable_unprepare(pcm3168a->scki);
return ret;
}
EXPORT_SYMBOL_GPL(pcm3168a_probe);
void pcm3168a_remove(struct device *dev)
{
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
snd_soc_unregister_codec(dev);
pm_runtime_disable(dev);
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
clk_disable_unprepare(pcm3168a->scki);
}
EXPORT_SYMBOL_GPL(pcm3168a_remove);
#ifdef CONFIG_PM
static int pcm3168a_rt_resume(struct device *dev)
{
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(pcm3168a->scki);
if (ret) {
dev_err(dev, "Failed to enable mclk: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
if (ret) {
dev_err(dev, "Failed to enable supplies: %d\n", ret);
goto err_clk;
}
ret = pcm3168a_reset(pcm3168a);
if (ret) {
dev_err(dev, "Failed to reset device: %d\n", ret);
goto err_regulator;
}
regcache_cache_only(pcm3168a->regmap, false);
regcache_mark_dirty(pcm3168a->regmap);
ret = regcache_sync(pcm3168a->regmap);
if (ret) {
dev_err(dev, "Failed to sync regmap: %d\n", ret);
goto err_regulator;
}
return 0;
err_regulator:
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
err_clk:
clk_disable_unprepare(pcm3168a->scki);
return ret;
}
static int pcm3168a_rt_suspend(struct device *dev)
{
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
regcache_cache_only(pcm3168a->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
pcm3168a->supplies);
clk_disable_unprepare(pcm3168a->scki);
return 0;
}
#endif
const struct dev_pm_ops pcm3168a_pm_ops = {
SET_RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
};
EXPORT_SYMBOL_GPL(pcm3168a_pm_ops);
MODULE_DESCRIPTION("PCM3168A codec driver");
MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
MODULE_LICENSE("GPL v2");
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