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linux/sound/soc/codecs/ak4458.c
Rob Herring 340d79a14d
ASoC: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-09 13:13:56 +01:00

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// 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.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.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 reset_control *reset;
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);
} else if (!IS_ERR_OR_NULL(ak4458->reset)) {
if (active)
reset_control_assert(ak4458->reset);
else
reset_control_deassert(ak4458->reset);
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, 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 = devm_reset_control_get_optional_shared(ak4458->dev, NULL);
if (IS_ERR(ak4458->reset))
return PTR_ERR(ak4458->reset);
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 = 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");
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