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linux_dsm_epyc7002/sound/soc/codecs/ak5558.c
Colin Ian King e380be7c55
ASoC: ak5558: make two structures static 
The structure ak5558_pm and soc_codec_dev_ak5558 are local to the
source and do not need to be in global scope, so make them static.
Also make soc_codec_dev_ak5558 static.

Cleans up sparse warnings:
warning: symbol 'ak5558_pm' was not declared. Should it be static?
warning: symbol 'soc_codec_dev_ak5558' was not declared. Should it be
static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-06-18 12:54:38 +01:00

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// SPDX-License-Identifier: GPL-2.0
//
// Audio driver for AK5558 ADC
//
// Copyright (C) 2015 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/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include "ak5558.h"
/* AK5558 Codec Private Data */
struct ak5558_priv {
struct snd_soc_component component;
struct regmap *regmap;
struct i2c_client *i2c;
struct gpio_desc *reset_gpiod; /* Reset & Power down GPIO */
int slots;
int slot_width;
};
/* ak5558 register cache & default register settings */
static const struct reg_default ak5558_reg[] = {
{ 0x0, 0xFF }, /* 0x00 AK5558_00_POWER_MANAGEMENT1 */
{ 0x1, 0x01 }, /* 0x01 AK5558_01_POWER_MANAGEMENT2 */
{ 0x2, 0x01 }, /* 0x02 AK5558_02_CONTROL1 */
{ 0x3, 0x00 }, /* 0x03 AK5558_03_CONTROL2 */
{ 0x4, 0x00 }, /* 0x04 AK5558_04_CONTROL3 */
{ 0x5, 0x00 } /* 0x05 AK5558_05_DSD */
};
static const char * const mono_texts[] = {
"8 Slot", "2 Slot", "4 Slot", "1 Slot",
};
static const struct soc_enum ak5558_mono_enum[] = {
SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1,
ARRAY_SIZE(mono_texts), mono_texts),
};
static const char * const digfil_texts[] = {
"Sharp Roll-Off", "Show Roll-Off",
"Short Delay Sharp Roll-Off", "Short Delay Show Roll-Off",
};
static const struct soc_enum ak5558_adcset_enum[] = {
SOC_ENUM_SINGLE(AK5558_04_CONTROL3, 0,
ARRAY_SIZE(digfil_texts), digfil_texts),
};
static const struct snd_kcontrol_new ak5558_snd_controls[] = {
SOC_ENUM("AK5558 Monaural Mode", ak5558_mono_enum[0]),
SOC_ENUM("AK5558 Digital Filter", ak5558_adcset_enum[0]),
};
static const struct snd_soc_dapm_widget ak5558_dapm_widgets[] = {
/* Analog Input */
SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
SND_SOC_DAPM_INPUT("AIN3"),
SND_SOC_DAPM_INPUT("AIN4"),
SND_SOC_DAPM_INPUT("AIN5"),
SND_SOC_DAPM_INPUT("AIN6"),
SND_SOC_DAPM_INPUT("AIN7"),
SND_SOC_DAPM_INPUT("AIN8"),
SND_SOC_DAPM_ADC("ADC Ch1", NULL, AK5558_00_POWER_MANAGEMENT1, 0, 0),
SND_SOC_DAPM_ADC("ADC Ch2", NULL, AK5558_00_POWER_MANAGEMENT1, 1, 0),
SND_SOC_DAPM_ADC("ADC Ch3", NULL, AK5558_00_POWER_MANAGEMENT1, 2, 0),
SND_SOC_DAPM_ADC("ADC Ch4", NULL, AK5558_00_POWER_MANAGEMENT1, 3, 0),
SND_SOC_DAPM_ADC("ADC Ch5", NULL, AK5558_00_POWER_MANAGEMENT1, 4, 0),
SND_SOC_DAPM_ADC("ADC Ch6", NULL, AK5558_00_POWER_MANAGEMENT1, 5, 0),
SND_SOC_DAPM_ADC("ADC Ch7", NULL, AK5558_00_POWER_MANAGEMENT1, 6, 0),
SND_SOC_DAPM_ADC("ADC Ch8", NULL, AK5558_00_POWER_MANAGEMENT1, 7, 0),
SND_SOC_DAPM_AIF_OUT("SDTO", "Capture", 0, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route ak5558_intercon[] = {
{"ADC Ch1", NULL, "AIN1"},
{"SDTO", NULL, "ADC Ch1"},
{"ADC Ch2", NULL, "AIN2"},
{"SDTO", NULL, "ADC Ch2"},
{"ADC Ch3", NULL, "AIN3"},
{"SDTO", NULL, "ADC Ch3"},
{"ADC Ch4", NULL, "AIN4"},
{"SDTO", NULL, "ADC Ch4"},
{"ADC Ch5", NULL, "AIN5"},
{"SDTO", NULL, "ADC Ch5"},
{"ADC Ch6", NULL, "AIN6"},
{"SDTO", NULL, "ADC Ch6"},
{"ADC Ch7", NULL, "AIN7"},
{"SDTO", NULL, "ADC Ch7"},
{"ADC Ch8", NULL, "AIN8"},
{"SDTO", NULL, "ADC Ch8"},
};
static int ak5558_set_mcki(struct snd_soc_component *component)
{
return snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_CKS,
AK5558_CKS_AUTO);
}
static int ak5558_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 ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
u8 bits;
int pcm_width = max(params_physical_width(params), ak5558->slot_width);
/* set master/slave audio interface */
bits = snd_soc_component_read32(component, AK5558_02_CONTROL1);
bits &= ~AK5558_BITS;
switch (pcm_width) {
case 16:
bits |= AK5558_DIF_24BIT_MODE;
break;
case 32:
bits |= AK5558_DIF_32BIT_MODE;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_BITS, bits);
return 0;
}
static int ak5558_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
u8 format;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
break;
case SND_SOC_DAIFMT_CBS_CFM:
case SND_SOC_DAIFMT_CBM_CFS:
default:
dev_err(dai->dev, "Clock mode unsupported");
return -EINVAL;
}
/* set master/slave audio interface */
format = snd_soc_component_read32(component, AK5558_02_CONTROL1);
format &= ~AK5558_DIF;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
format |= AK5558_DIF_I2S_MODE;
break;
case SND_SOC_DAIFMT_LEFT_J:
format |= AK5558_DIF_MSB_MODE;
break;
case SND_SOC_DAIFMT_DSP_B:
format |= AK5558_DIF_MSB_MODE;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_DIF, format);
return 0;
}
static int ak5558_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 ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
int tdm_mode;
ak5558->slots = slots;
ak5558->slot_width = slot_width;
switch (slots * slot_width) {
case 128:
tdm_mode = AK5558_MODE_TDM128;
break;
case 256:
tdm_mode = AK5558_MODE_TDM256;
break;
case 512:
tdm_mode = AK5558_MODE_TDM512;
break;
default:
tdm_mode = AK5558_MODE_NORMAL;
break;
}
snd_soc_component_update_bits(component, AK5558_03_CONTROL2, AK5558_MODE_BITS,
tdm_mode);
return 0;
}
#define AK5558_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
static const unsigned int ak5558_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 ak5558_rate_constraints = {
.count = ARRAY_SIZE(ak5558_rates),
.list = ak5558_rates,
};
static int ak5558_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&ak5558_rate_constraints);
}
static struct snd_soc_dai_ops ak5558_dai_ops = {
.startup = ak5558_startup,
.hw_params = ak5558_hw_params,
.set_fmt = ak5558_set_dai_fmt,
.set_tdm_slot = ak5558_set_tdm_slot,
};
static struct snd_soc_dai_driver ak5558_dai = {
.name = "ak5558-aif",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 8,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK5558_FORMATS,
},
.ops = &ak5558_dai_ops,
};
static void ak5558_power_off(struct ak5558_priv *ak5558)
{
if (!ak5558->reset_gpiod)
return;
gpiod_set_value_cansleep(ak5558->reset_gpiod, 0);
usleep_range(1000, 2000);
}
static void ak5558_power_on(struct ak5558_priv *ak5558)
{
if (!ak5558->reset_gpiod)
return;
gpiod_set_value_cansleep(ak5558->reset_gpiod, 1);
usleep_range(1000, 2000);
}
static int ak5558_probe(struct snd_soc_component *component)
{
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
ak5558_power_on(ak5558);
return ak5558_set_mcki(component);
}
static void ak5558_remove(struct snd_soc_component *component)
{
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
ak5558_power_off(ak5558);
}
static int __maybe_unused ak5558_runtime_suspend(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
regcache_cache_only(ak5558->regmap, true);
ak5558_power_off(ak5558);
return 0;
}
static int __maybe_unused ak5558_runtime_resume(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
ak5558_power_off(ak5558);
ak5558_power_on(ak5558);
regcache_cache_only(ak5558->regmap, false);
regcache_mark_dirty(ak5558->regmap);
return regcache_sync(ak5558->regmap);
}
static const struct dev_pm_ops ak5558_pm = {
SET_RUNTIME_PM_OPS(ak5558_runtime_suspend, ak5558_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static const struct snd_soc_component_driver soc_codec_dev_ak5558 = {
.probe = ak5558_probe,
.remove = ak5558_remove,
.controls = ak5558_snd_controls,
.num_controls = ARRAY_SIZE(ak5558_snd_controls),
.dapm_widgets = ak5558_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak5558_dapm_widgets),
.dapm_routes = ak5558_intercon,
.num_dapm_routes = ARRAY_SIZE(ak5558_intercon),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static const struct regmap_config ak5558_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = AK5558_05_DSD,
.reg_defaults = ak5558_reg,
.num_reg_defaults = ARRAY_SIZE(ak5558_reg),
.cache_type = REGCACHE_RBTREE,
};
static int ak5558_i2c_probe(struct i2c_client *i2c)
{
struct ak5558_priv *ak5558;
int ret = 0;
ak5558 = devm_kzalloc(&i2c->dev, sizeof(*ak5558), GFP_KERNEL);
if (!ak5558)
return -ENOMEM;
ak5558->regmap = devm_regmap_init_i2c(i2c, &ak5558_regmap);
if (IS_ERR(ak5558->regmap))
return PTR_ERR(ak5558->regmap);
i2c_set_clientdata(i2c, ak5558);
ak5558->i2c = i2c;
ak5558->reset_gpiod = devm_gpiod_get_optional(&i2c->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(ak5558->reset_gpiod))
return PTR_ERR(ak5558->reset_gpiod);
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_codec_dev_ak5558,
&ak5558_dai, 1);
if (ret)
return ret;
pm_runtime_enable(&i2c->dev);
return 0;
}
static int ak5558_i2c_remove(struct i2c_client *i2c)
{
pm_runtime_disable(&i2c->dev);
return 0;
}
static const struct of_device_id ak5558_i2c_dt_ids[] = {
{ .compatible = "asahi-kasei,ak5558"},
{ }
};
static struct i2c_driver ak5558_i2c_driver = {
.driver = {
.name = "ak5558",
.of_match_table = of_match_ptr(ak5558_i2c_dt_ids),
.pm = &ak5558_pm,
},
.probe_new = ak5558_i2c_probe,
.remove = ak5558_i2c_remove,
};
module_i2c_driver(ak5558_i2c_driver);
MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
MODULE_DESCRIPTION("ASoC AK5558 ADC driver");
MODULE_LICENSE("GPL v2");
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