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linux/sound/soc/codecs/pcm1681.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-or-later
/*
* PCM1681 ASoC codec driver
*
* Copyright (c) StreamUnlimited GmbH 2013
* Marek Belisko <marek.belisko@streamunlimited.com>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/of.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
#define PCM1681_PCM_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
#define PCM1681_SOFT_MUTE_ALL 0xff
#define PCM1681_DEEMPH_RATE_MASK 0x18
#define PCM1681_DEEMPH_MASK 0x01
#define PCM1681_ATT_CONTROL(X) (X <= 6 ? X : X + 9) /* Attenuation level */
#define PCM1681_SOFT_MUTE 0x07 /* Soft mute control register */
#define PCM1681_DAC_CONTROL 0x08 /* DAC operation control */
#define PCM1681_FMT_CONTROL 0x09 /* Audio interface data format */
#define PCM1681_DEEMPH_CONTROL 0x0a /* De-emphasis control */
#define PCM1681_ZERO_DETECT_STATUS 0x0e /* Zero detect status reg */
static const struct reg_default pcm1681_reg_defaults[] = {
{ 0x01, 0xff },
{ 0x02, 0xff },
{ 0x03, 0xff },
{ 0x04, 0xff },
{ 0x05, 0xff },
{ 0x06, 0xff },
{ 0x07, 0x00 },
{ 0x08, 0x00 },
{ 0x09, 0x06 },
{ 0x0A, 0x00 },
{ 0x0B, 0xff },
{ 0x0C, 0x0f },
{ 0x0D, 0x00 },
{ 0x10, 0xff },
{ 0x11, 0xff },
{ 0x12, 0x00 },
{ 0x13, 0x00 },
};
static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
{
return !((reg == 0x00) || (reg == 0x0f));
}
static bool pcm1681_writeable_reg(struct device *dev, unsigned int reg)
{
return pcm1681_accessible_reg(dev, reg) &&
(reg != PCM1681_ZERO_DETECT_STATUS);
}
struct pcm1681_private {
struct regmap *regmap;
unsigned int format;
/* Current deemphasis status */
unsigned int deemph;
/* Current rate for deemphasis control */
unsigned int rate;
};
static const int pcm1681_deemph[] = { 44100, 48000, 32000 };
static int pcm1681_set_deemph(struct snd_soc_component *component)
{
struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
int i, val = -1, enable = 0;
if (priv->deemph) {
for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++) {
if (pcm1681_deemph[i] == priv->rate) {
val = i;
break;
}
}
}
if (val != -1) {
regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
PCM1681_DEEMPH_RATE_MASK, val << 3);
enable = 1;
} else {
enable = 0;
}
/* enable/disable deemphasis functionality */
return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
PCM1681_DEEMPH_MASK, enable);
}
static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0] = priv->deemph;
return 0;
}
static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
priv->deemph = ucontrol->value.integer.value[0];
return pcm1681_set_deemph(component);
}
static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int format)
{
struct snd_soc_component *component = codec_dai->component;
struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
/* The PCM1681 can only be consumer to all clocks */
if ((format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) {
dev_err(component->dev, "Invalid clocking mode\n");
return -EINVAL;
}
priv->format = format;
return 0;
}
static int pcm1681_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
int val;
if (mute)
val = PCM1681_SOFT_MUTE_ALL;
else
val = 0;
return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
}
static int pcm1681_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 pcm1681_private *priv = snd_soc_component_get_drvdata(component);
int val = 0, ret;
priv->rate = params_rate(params);
switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_RIGHT_J:
switch (params_width(params)) {
case 24:
val = 0;
break;
case 16:
val = 3;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
val = 0x04;
break;
case SND_SOC_DAIFMT_LEFT_J:
val = 0x05;
break;
default:
dev_err(component->dev, "Invalid DAI format\n");
return -EINVAL;
}
ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
if (ret < 0)
return ret;
return pcm1681_set_deemph(component);
}
static const struct snd_soc_dai_ops pcm1681_dai_ops = {
.set_fmt = pcm1681_set_dai_fmt,
.hw_params = pcm1681_hw_params,
.mute_stream = pcm1681_mute,
.no_capture_mute = 1,
};
static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("VOUT1"),
SND_SOC_DAPM_OUTPUT("VOUT2"),
SND_SOC_DAPM_OUTPUT("VOUT3"),
SND_SOC_DAPM_OUTPUT("VOUT4"),
SND_SOC_DAPM_OUTPUT("VOUT5"),
SND_SOC_DAPM_OUTPUT("VOUT6"),
SND_SOC_DAPM_OUTPUT("VOUT7"),
SND_SOC_DAPM_OUTPUT("VOUT8"),
};
static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
{ "VOUT1", NULL, "Playback" },
{ "VOUT2", NULL, "Playback" },
{ "VOUT3", NULL, "Playback" },
{ "VOUT4", NULL, "Playback" },
{ "VOUT5", NULL, "Playback" },
{ "VOUT6", NULL, "Playback" },
{ "VOUT7", NULL, "Playback" },
{ "VOUT8", NULL, "Playback" },
};
static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
static const struct snd_kcontrol_new pcm1681_controls[] = {
SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
0x7f, 0, pcm1681_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
0x7f, 0, pcm1681_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
0x7f, 0, pcm1681_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
0x7f, 0, pcm1681_dac_tlv),
SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
pcm1681_get_deemph, pcm1681_put_deemph),
};
static struct snd_soc_dai_driver pcm1681_dai = {
.name = "pcm1681-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 8,
.rates = PCM1681_PCM_RATES,
.formats = PCM1681_PCM_FORMATS,
},
.ops = &pcm1681_dai_ops,
};
#ifdef CONFIG_OF
static const struct of_device_id pcm1681_dt_ids[] = {
{ .compatible = "ti,pcm1681", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
#endif
static const struct regmap_config pcm1681_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x13,
.reg_defaults = pcm1681_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
.writeable_reg = pcm1681_writeable_reg,
.readable_reg = pcm1681_accessible_reg,
};
static const struct snd_soc_component_driver soc_component_dev_pcm1681 = {
.controls = pcm1681_controls,
.num_controls = ARRAY_SIZE(pcm1681_controls),
.dapm_widgets = pcm1681_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets),
.dapm_routes = pcm1681_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct i2c_device_id pcm1681_i2c_id[] = {
{"pcm1681", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
static int pcm1681_i2c_probe(struct i2c_client *client)
{
int ret;
struct pcm1681_private *priv;
priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
return ret;
}
i2c_set_clientdata(client, priv);
return devm_snd_soc_register_component(&client->dev,
&soc_component_dev_pcm1681,
&pcm1681_dai, 1);
}
static struct i2c_driver pcm1681_i2c_driver = {
.driver = {
.name = "pcm1681",
.of_match_table = of_match_ptr(pcm1681_dt_ids),
},
.id_table = pcm1681_i2c_id,
.probe = pcm1681_i2c_probe,
};
module_i2c_driver(pcm1681_i2c_driver);
MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
MODULE_LICENSE("GPL");
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