mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 00:36:40 +07:00
9b2709687a
Use regmap for IO for the lm4857 driver instead of open-coding the IO read/write functions. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
213 lines
5.4 KiB
C
213 lines
5.4 KiB
C
/*
|
|
* LM4857 AMP driver
|
|
*
|
|
* Copyright 2007 Wolfson Microelectronics PLC.
|
|
* Author: Graeme Gregory
|
|
* graeme.gregory@wolfsonmicro.com
|
|
* Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/tlv.h>
|
|
|
|
struct lm4857 {
|
|
struct regmap *regmap;
|
|
uint8_t mode;
|
|
};
|
|
|
|
static const struct reg_default lm4857_default_regs[] = {
|
|
{ 0x0, 0x00 },
|
|
{ 0x1, 0x00 },
|
|
{ 0x2, 0x00 },
|
|
{ 0x3, 0x00 },
|
|
};
|
|
|
|
/* The register offsets in the cache array */
|
|
#define LM4857_MVOL 0
|
|
#define LM4857_LVOL 1
|
|
#define LM4857_RVOL 2
|
|
#define LM4857_CTRL 3
|
|
|
|
/* the shifts required to set these bits */
|
|
#define LM4857_3D 5
|
|
#define LM4857_WAKEUP 5
|
|
#define LM4857_EPGAIN 4
|
|
|
|
static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
ucontrol->value.integer.value[0] = lm4857->mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
|
|
uint8_t value = ucontrol->value.integer.value[0];
|
|
|
|
lm4857->mode = value;
|
|
|
|
if (codec->dapm.bias_level == SND_SOC_BIAS_ON)
|
|
regmap_update_bits(lm4857->regmap, LM4857_CTRL, 0x0F, value + 6);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int lm4857_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
regmap_update_bits(lm4857->regmap, LM4857_CTRL, 0x0F,
|
|
lm4857->mode + 6);
|
|
break;
|
|
case SND_SOC_BIAS_STANDBY:
|
|
regmap_update_bits(lm4857->regmap, LM4857_CTRL, 0x0F, 0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
codec->dapm.bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char *lm4857_mode[] = {
|
|
"Earpiece",
|
|
"Loudspeaker",
|
|
"Loudspeaker + Headphone",
|
|
"Headphone",
|
|
};
|
|
|
|
static const struct soc_enum lm4857_mode_enum =
|
|
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode);
|
|
|
|
static const struct snd_soc_dapm_widget lm4857_dapm_widgets[] = {
|
|
SND_SOC_DAPM_INPUT("IN"),
|
|
|
|
SND_SOC_DAPM_OUTPUT("LS"),
|
|
SND_SOC_DAPM_OUTPUT("HP"),
|
|
SND_SOC_DAPM_OUTPUT("EP"),
|
|
};
|
|
|
|
static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
|
|
static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
|
|
|
|
static const struct snd_kcontrol_new lm4857_controls[] = {
|
|
SOC_SINGLE_TLV("Left Playback Volume", LM4857_LVOL, 0, 31, 0,
|
|
stereo_tlv),
|
|
SOC_SINGLE_TLV("Right Playback Volume", LM4857_RVOL, 0, 31, 0,
|
|
stereo_tlv),
|
|
SOC_SINGLE_TLV("Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
|
|
mono_tlv),
|
|
SOC_SINGLE("Spk 3D Playback Switch", LM4857_LVOL, LM4857_3D, 1, 0),
|
|
SOC_SINGLE("HP 3D Playback Switch", LM4857_RVOL, LM4857_3D, 1, 0),
|
|
SOC_SINGLE("Fast Wakeup Playback Switch", LM4857_CTRL,
|
|
LM4857_WAKEUP, 1, 0),
|
|
SOC_SINGLE("Earpiece 6dB Playback Switch", LM4857_CTRL,
|
|
LM4857_EPGAIN, 1, 0),
|
|
|
|
SOC_ENUM_EXT("Mode", lm4857_mode_enum,
|
|
lm4857_get_mode, lm4857_set_mode),
|
|
};
|
|
|
|
/* There is a demux between the input signal and the output signals.
|
|
* Currently there is no easy way to model it in ASoC and since it does not make
|
|
* much of a difference in practice simply connect the input direclty to the
|
|
* outputs. */
|
|
static const struct snd_soc_dapm_route lm4857_routes[] = {
|
|
{"LS", NULL, "IN"},
|
|
{"HP", NULL, "IN"},
|
|
{"EP", NULL, "IN"},
|
|
};
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_lm4857 = {
|
|
.set_bias_level = lm4857_set_bias_level,
|
|
|
|
.controls = lm4857_controls,
|
|
.num_controls = ARRAY_SIZE(lm4857_controls),
|
|
.dapm_widgets = lm4857_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(lm4857_dapm_widgets),
|
|
.dapm_routes = lm4857_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(lm4857_routes),
|
|
};
|
|
|
|
static const struct regmap_config lm4857_regmap_config = {
|
|
.val_bits = 6,
|
|
.reg_bits = 2,
|
|
|
|
.max_register = LM4857_CTRL,
|
|
|
|
.cache_type = REGCACHE_FLAT,
|
|
.reg_defaults = lm4857_default_regs,
|
|
.num_reg_defaults = ARRAY_SIZE(lm4857_default_regs),
|
|
};
|
|
|
|
static int lm4857_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct lm4857 *lm4857;
|
|
|
|
lm4857 = devm_kzalloc(&i2c->dev, sizeof(*lm4857), GFP_KERNEL);
|
|
if (!lm4857)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, lm4857);
|
|
|
|
lm4857->regmap = devm_regmap_init_i2c(i2c, &lm4857_regmap_config);
|
|
if (IS_ERR(lm4857->regmap))
|
|
return PTR_ERR(lm4857->regmap);
|
|
|
|
return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_lm4857, NULL, 0);
|
|
}
|
|
|
|
static int lm4857_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
snd_soc_unregister_codec(&i2c->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id lm4857_i2c_id[] = {
|
|
{ "lm4857", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, lm4857_i2c_id);
|
|
|
|
static struct i2c_driver lm4857_i2c_driver = {
|
|
.driver = {
|
|
.name = "lm4857",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = lm4857_i2c_probe,
|
|
.remove = lm4857_i2c_remove,
|
|
.id_table = lm4857_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(lm4857_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
|
MODULE_DESCRIPTION("LM4857 amplifier driver");
|
|
MODULE_LICENSE("GPL");
|