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linuxdebug/sound/soc/codecs/ak4458.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0
//
// Audio driver for AK4458 DAC
//
// Copyright (C) 2016 Asahi Kasei Microdevices Corporation
// Copyright 2018 NXP
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include "ak4458.h"
#define AK4458_NUM_SUPPLIES 2
static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = {
"DVDD",
"AVDD",
};
enum ak4458_type {
AK4458 = 0,
AK4497 = 1,
};
struct ak4458_drvdata {
struct snd_soc_dai_driver *dai_drv;
const struct snd_soc_component_driver *comp_drv;
enum ak4458_type type;
};
/* AK4458 Codec Private Data */
struct ak4458_priv {
struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES];
const struct ak4458_drvdata *drvdata;
struct device *dev;
struct regmap *regmap;
struct gpio_desc *reset_gpiod;
struct gpio_desc *mute_gpiod;
int digfil; /* SSLOW, SD, SLOW bits */
int fs; /* sampling rate */
int fmt;
int slots;
int slot_width;
u32 dsd_path; /* For ak4497 */
};
static const struct reg_default ak4458_reg_defaults[] = {
{ 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */
{ 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */
{ 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */
{ 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */
{ 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */
{ 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */
{ 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */
{ 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */
{ 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */
{ 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */
{ 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */
{ 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */
{ 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */
{ 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */
{ 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */
{ 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */
{ 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */
{ 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */
{ 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */
{ 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */
{ 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */
};
/*
* Volume control:
* from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
*/
static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
/*
* DEM1 bit DEM0 bit Mode
* 0 0 44.1kHz
* 0 1 OFF (default)
* 1 0 48kHz
* 1 1 32kHz
*/
static const char * const ak4458_dem_select_texts[] = {
"44.1kHz", "OFF", "48kHz", "32kHz"
};
/*
* SSLOW, SD, SLOW bits Digital Filter Setting
* 0, 0, 0 : Sharp Roll-Off Filter
* 0, 0, 1 : Slow Roll-Off Filter
* 0, 1, 0 : Short delay Sharp Roll-Off Filter
* 0, 1, 1 : Short delay Slow Roll-Off Filter
* 1, *, * : Super Slow Roll-Off Filter
*/
static const char * const ak4458_digfil_select_texts[] = {
"Sharp Roll-Off Filter",
"Slow Roll-Off Filter",
"Short delay Sharp Roll-Off Filter",
"Short delay Slow Roll-Off Filter",
"Super Slow Roll-Off Filter"
};
/*
* DZFB: Inverting Enable of DZF
* 0: DZF goes H at Zero Detection
* 1: DZF goes L at Zero Detection
*/
static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
/*
* SC1-0 bits: Sound Mode Setting
* 0 0 : Sound Mode 0
* 0 1 : Sound Mode 1
* 1 0 : Sound Mode 2
* 1 1 : Reserved
*/
static const char * const ak4458_sc_select_texts[] = {
"Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
};
/* FIR2-0 bits: FIR Filter Mode Setting */
static const char * const ak4458_fir_select_texts[] = {
"Mode 0", "Mode 1", "Mode 2", "Mode 3",
"Mode 4", "Mode 5", "Mode 6", "Mode 7",
};
/* ATS1-0 bits Attenuation Speed */
static const char * const ak4458_ats_select_texts[] = {
"4080/fs", "2040/fs", "510/fs", "255/fs",
};
/* DIF2 bit Audio Interface Format Setting(BICK fs) */
static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
static const struct soc_enum ak4458_dac1_dem_enum =
SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
ARRAY_SIZE(ak4458_dem_select_texts),
ak4458_dem_select_texts);
static const struct soc_enum ak4458_dac2_dem_enum =
SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
ARRAY_SIZE(ak4458_dem_select_texts),
ak4458_dem_select_texts);
static const struct soc_enum ak4458_dac3_dem_enum =
SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
ARRAY_SIZE(ak4458_dem_select_texts),
ak4458_dem_select_texts);
static const struct soc_enum ak4458_dac4_dem_enum =
SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
ARRAY_SIZE(ak4458_dem_select_texts),
ak4458_dem_select_texts);
static const struct soc_enum ak4458_digfil_enum =
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
ak4458_digfil_select_texts);
static const struct soc_enum ak4458_dzfb_enum =
SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
ARRAY_SIZE(ak4458_dzfb_select_texts),
ak4458_dzfb_select_texts);
static const struct soc_enum ak4458_sm_enum =
SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
ARRAY_SIZE(ak4458_sc_select_texts),
ak4458_sc_select_texts);
static const struct soc_enum ak4458_fir_enum =
SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
ARRAY_SIZE(ak4458_fir_select_texts),
ak4458_fir_select_texts);
static const struct soc_enum ak4458_ats_enum =
SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
ARRAY_SIZE(ak4458_ats_select_texts),
ak4458_ats_select_texts);
static const struct soc_enum ak4458_dif_enum =
SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
ARRAY_SIZE(ak4458_dif_select_texts),
ak4458_dif_select_texts);
static int get_digfil(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
ucontrol->value.enumerated.item[0] = ak4458->digfil;
return 0;
}
static int set_digfil(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
int num;
num = ucontrol->value.enumerated.item[0];
if (num > 4)
return -EINVAL;
ak4458->digfil = num;
/* write SD bit */
snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
AK4458_SD_MASK,
((ak4458->digfil & 0x02) << 4));
/* write SLOW bit */
snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
AK4458_SLOW_MASK,
(ak4458->digfil & 0x01));
/* write SSLOW bit */
snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
AK4458_SSLOW_MASK,
((ak4458->digfil & 0x04) >> 2));
return 0;
}
static const struct snd_kcontrol_new ak4458_snd_controls[] = {
SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
get_digfil, set_digfil),
SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
SOC_ENUM("AK4458 Attenuation transition Time Setting",
ak4458_ats_enum),
SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
};
/* ak4458 dapm widgets */
static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
};
static const struct snd_soc_dapm_route ak4458_intercon[] = {
{"AK4458 DAC1", NULL, "AK4458 SDTI"},
{"AK4458 AOUTA", NULL, "AK4458 DAC1"},
{"AK4458 DAC2", NULL, "AK4458 SDTI"},
{"AK4458 AOUTB", NULL, "AK4458 DAC2"},
{"AK4458 DAC3", NULL, "AK4458 SDTI"},
{"AK4458 AOUTC", NULL, "AK4458 DAC3"},
{"AK4458 DAC4", NULL, "AK4458 SDTI"},
{"AK4458 AOUTD", NULL, "AK4458 DAC4"},
};
/* ak4497 controls */
static const struct snd_kcontrol_new ak4497_snd_controls[] = {
SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
get_digfil, set_digfil),
SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
SOC_ENUM("AK4497 Attenuation transition Time Setting",
ak4458_ats_enum),
};
/* ak4497 dapm widgets */
static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
};
/* ak4497 dapm routes */
static const struct snd_soc_dapm_route ak4497_intercon[] = {
{"AK4497 DAC", NULL, "AK4497 SDTI"},
{"AK4497 AOUT", NULL, "AK4497 DAC"},
};
static int ak4458_get_tdm_mode(struct ak4458_priv *ak4458)
{
switch (ak4458->slots * ak4458->slot_width) {
case 128:
return 1;
case 256:
return 2;
case 512:
return 3;
default:
return 0;
}
}
static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
{
int ret;
if (bit)
ret = snd_soc_component_update_bits(component,
AK4458_00_CONTROL1,
AK4458_RSTN_MASK,
0x1);
else
ret = snd_soc_component_update_bits(component,
AK4458_00_CONTROL1,
AK4458_RSTN_MASK,
0x0);
if (ret < 0)
return ret;
return 0;
}
static int ak4458_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 ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
int pcm_width = max(params_physical_width(params), ak4458->slot_width);
u8 format, dsdsel0, dsdsel1, dchn;
int nfs1, dsd_bclk, ret, channels, channels_max;
nfs1 = params_rate(params);
ak4458->fs = nfs1;
/* calculate bit clock */
channels = params_channels(params);
channels_max = dai->driver->playback.channels_max;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_DSD_U8:
case SNDRV_PCM_FORMAT_DSD_U16_LE:
case SNDRV_PCM_FORMAT_DSD_U16_BE:
case SNDRV_PCM_FORMAT_DSD_U32_LE:
case SNDRV_PCM_FORMAT_DSD_U32_BE:
dsd_bclk = nfs1 * params_physical_width(params);
switch (dsd_bclk) {
case 2822400:
dsdsel0 = 0;
dsdsel1 = 0;
break;
case 5644800:
dsdsel0 = 1;
dsdsel1 = 0;
break;
case 11289600:
dsdsel0 = 0;
dsdsel1 = 1;
break;
case 22579200:
if (ak4458->drvdata->type == AK4497) {
dsdsel0 = 1;
dsdsel1 = 1;
} else {
dev_err(dai->dev, "DSD512 not supported.\n");
return -EINVAL;
}
break;
default:
dev_err(dai->dev, "Unsupported dsd bclk.\n");
return -EINVAL;
}
snd_soc_component_update_bits(component, AK4458_06_DSD1,
AK4458_DSDSEL_MASK, dsdsel0);
snd_soc_component_update_bits(component, AK4458_09_DSD2,
AK4458_DSDSEL_MASK, dsdsel1);
break;
}
/* Master Clock Frequency Auto Setting Mode Enable */
snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
switch (pcm_width) {
case 16:
if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
format = AK4458_DIF_24BIT_I2S;
else
format = AK4458_DIF_16BIT_LSB;
break;
case 32:
switch (ak4458->fmt) {
case SND_SOC_DAIFMT_I2S:
format = AK4458_DIF_32BIT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
format = AK4458_DIF_32BIT_MSB;
break;
case SND_SOC_DAIFMT_RIGHT_J:
format = AK4458_DIF_32BIT_LSB;
break;
case SND_SOC_DAIFMT_DSP_B:
format = AK4458_DIF_32BIT_MSB;
break;
case SND_SOC_DAIFMT_PDM:
format = AK4458_DIF_32BIT_MSB;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
AK4458_DIF_MASK, format);
/*
* Enable/disable Daisy Chain if in TDM mode and the number of played
* channels is bigger than the maximum supported number of channels
*/
dchn = ak4458_get_tdm_mode(ak4458) &&
(ak4458->fmt == SND_SOC_DAIFMT_DSP_B) &&
(channels > channels_max) ? AK4458_DCHAIN_MASK : 0;
snd_soc_component_update_bits(component, AK4458_0B_CONTROL7,
AK4458_DCHAIN_MASK, dchn);
if (ak4458->drvdata->type == AK4497) {
ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
0x4, (ak4458->dsd_path << 2));
if (ret < 0)
return ret;
}
ret = ak4458_rstn_control(component, 0);
if (ret)
return ret;
ret = ak4458_rstn_control(component, 1);
if (ret)
return ret;
return 0;
}
static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
int ret;
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC: /* Consumer Mode */
break;
case SND_SOC_DAIFMT_CBP_CFP: /* Provider Mode is not supported */
case SND_SOC_DAIFMT_CBC_CFP:
case SND_SOC_DAIFMT_CBP_CFC:
default:
dev_err(component->dev, "Clock provider mode unsupported\n");
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_DSP_B:
case SND_SOC_DAIFMT_PDM:
ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
break;
default:
dev_err(component->dev, "Audio format 0x%02X unsupported\n",
fmt & SND_SOC_DAIFMT_FORMAT_MASK);
return -EINVAL;
}
/* DSD mode */
snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
AK4458_DP_MASK,
ak4458->fmt == SND_SOC_DAIFMT_PDM ?
AK4458_DP_MASK : 0);
ret = ak4458_rstn_control(component, 0);
if (ret)
return ret;
ret = ak4458_rstn_control(component, 1);
if (ret)
return ret;
return 0;
}
static const int att_speed[] = { 4080, 2040, 510, 255 };
static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
int nfs, ndt, reg;
int ats;
nfs = ak4458->fs;
reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
ndt = att_speed[ats] / (nfs / 1000);
if (mute) {
snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1);
mdelay(ndt);
if (ak4458->mute_gpiod)
gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
} else {
if (ak4458->mute_gpiod)
gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
mdelay(ndt);
}
return 0;
}
static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots, int slot_width)
{
struct snd_soc_component *component = dai->component;
struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
int mode;
ak4458->slots = slots;
ak4458->slot_width = slot_width;
mode = ak4458_get_tdm_mode(ak4458) << AK4458_MODE_SHIFT;
snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
AK4458_MODE_MASK,
mode);
return 0;
}
#define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE |\
SNDRV_PCM_FMTBIT_DSD_U8 |\
SNDRV_PCM_FMTBIT_DSD_U16_LE |\
SNDRV_PCM_FMTBIT_DSD_U32_LE)
static const unsigned int ak4458_rates[] = {
8000, 11025, 16000, 22050,
32000, 44100, 48000, 88200,
96000, 176400, 192000, 352800,
384000, 705600, 768000, 1411200,
2822400,
};
static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
.count = ARRAY_SIZE(ak4458_rates),
.list = ak4458_rates,
};
static int ak4458_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret;
ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&ak4458_rate_constraints);
return ret;
}
static const struct snd_soc_dai_ops ak4458_dai_ops = {
.startup = ak4458_startup,
.hw_params = ak4458_hw_params,
.set_fmt = ak4458_set_dai_fmt,
.mute_stream = ak4458_set_dai_mute,
.set_tdm_slot = ak4458_set_tdm_slot,
.no_capture_mute = 1,
};
static struct snd_soc_dai_driver ak4458_dai = {
.name = "ak4458-aif",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 8,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK4458_FORMATS,
},
.ops = &ak4458_dai_ops,
};
static struct snd_soc_dai_driver ak4497_dai = {
.name = "ak4497-aif",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK4458_FORMATS,
},
.ops = &ak4458_dai_ops,
};
static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
{
if (ak4458->reset_gpiod) {
gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
usleep_range(1000, 2000);
}
}
#ifdef CONFIG_PM
static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
{
struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
regcache_cache_only(ak4458->regmap, true);
ak4458_reset(ak4458, true);
if (ak4458->mute_gpiod)
gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
ak4458->supplies);
return 0;
}
static int __maybe_unused ak4458_runtime_resume(struct device *dev)
{
struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
ak4458->supplies);
if (ret != 0) {
dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
if (ak4458->mute_gpiod)
gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
ak4458_reset(ak4458, true);
ak4458_reset(ak4458, false);
regcache_cache_only(ak4458->regmap, false);
regcache_mark_dirty(ak4458->regmap);
return regcache_sync(ak4458->regmap);
}
#endif /* CONFIG_PM */
static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
.controls = ak4458_snd_controls,
.num_controls = ARRAY_SIZE(ak4458_snd_controls),
.dapm_widgets = ak4458_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets),
.dapm_routes = ak4458_intercon,
.num_dapm_routes = ARRAY_SIZE(ak4458_intercon),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
.controls = ak4497_snd_controls,
.num_controls = ARRAY_SIZE(ak4497_snd_controls),
.dapm_widgets = ak4497_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets),
.dapm_routes = ak4497_intercon,
.num_dapm_routes = ARRAY_SIZE(ak4497_intercon),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config ak4458_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = AK4458_14_R4CHATT,
.reg_defaults = ak4458_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
.cache_type = REGCACHE_RBTREE,
};
static const struct ak4458_drvdata ak4458_drvdata = {
.dai_drv = &ak4458_dai,
.comp_drv = &soc_codec_dev_ak4458,
.type = AK4458,
};
static const struct ak4458_drvdata ak4497_drvdata = {
.dai_drv = &ak4497_dai,
.comp_drv = &soc_codec_dev_ak4497,
.type = AK4497,
};
static const struct dev_pm_ops ak4458_pm = {
SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static int ak4458_i2c_probe(struct i2c_client *i2c)
{
struct ak4458_priv *ak4458;
int ret, i;
ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
if (!ak4458)
return -ENOMEM;
ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
if (IS_ERR(ak4458->regmap))
return PTR_ERR(ak4458->regmap);
i2c_set_clientdata(i2c, ak4458);
ak4458->dev = &i2c->dev;
ak4458->drvdata = of_device_get_match_data(&i2c->dev);
ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(ak4458->reset_gpiod))
return PTR_ERR(ak4458->reset_gpiod);
ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
GPIOD_OUT_LOW);
if (IS_ERR(ak4458->mute_gpiod))
return PTR_ERR(ak4458->mute_gpiod);
/* Optional property for ak4497 */
of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
ak4458->supplies[i].supply = ak4458_supply_names[i];
ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
ak4458->supplies);
if (ret != 0) {
dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = devm_snd_soc_register_component(ak4458->dev,
ak4458->drvdata->comp_drv,
ak4458->drvdata->dai_drv, 1);
if (ret < 0) {
dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
return ret;
}
pm_runtime_enable(&i2c->dev);
regcache_cache_only(ak4458->regmap, true);
ak4458_reset(ak4458, false);
return 0;
}
static void ak4458_i2c_remove(struct i2c_client *i2c)
{
struct ak4458_priv *ak4458 = i2c_get_clientdata(i2c);
ak4458_reset(ak4458, true);
pm_runtime_disable(&i2c->dev);
}
static const struct of_device_id ak4458_of_match[] = {
{ .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
{ .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
{ },
};
MODULE_DEVICE_TABLE(of, ak4458_of_match);
static struct i2c_driver ak4458_i2c_driver = {
.driver = {
.name = "ak4458",
.pm = &ak4458_pm,
.of_match_table = ak4458_of_match,
},
.probe_new = ak4458_i2c_probe,
.remove = ak4458_i2c_remove,
};
module_i2c_driver(ak4458_i2c_driver);
MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
MODULE_LICENSE("GPL v2");