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linux/sound/soc/codecs/ak4641.c
Uwe Kleine-König ed5c2f5fd1 i2c: Make remove callback return void 
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* ak4641.c -- AK4641 ALSA Soc Audio driver
*
* Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
* Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
*
* Based on ak4535.c by Richard Purdie
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/ak4641.h>
/* AK4641 register space */
#define AK4641_PM1 0x00
#define AK4641_PM2 0x01
#define AK4641_SIG1 0x02
#define AK4641_SIG2 0x03
#define AK4641_MODE1 0x04
#define AK4641_MODE2 0x05
#define AK4641_DAC 0x06
#define AK4641_MIC 0x07
#define AK4641_TIMER 0x08
#define AK4641_ALC1 0x09
#define AK4641_ALC2 0x0a
#define AK4641_PGA 0x0b
#define AK4641_LATT 0x0c
#define AK4641_RATT 0x0d
#define AK4641_VOL 0x0e
#define AK4641_STATUS 0x0f
#define AK4641_EQLO 0x10
#define AK4641_EQMID 0x11
#define AK4641_EQHI 0x12
#define AK4641_BTIF 0x13
/* codec private data */
struct ak4641_priv {
struct regmap *regmap;
unsigned int sysclk;
int deemph;
int playback_fs;
};
/*
* ak4641 register cache
*/
static const struct reg_default ak4641_reg_defaults[] = {
{ 0, 0x00 }, { 1, 0x80 }, { 2, 0x00 }, { 3, 0x80 },
{ 4, 0x02 }, { 5, 0x00 }, { 6, 0x11 }, { 7, 0x05 },
{ 8, 0x00 }, { 9, 0x00 }, { 10, 0x36 }, { 11, 0x10 },
{ 12, 0x00 }, { 13, 0x00 }, { 14, 0x57 }, { 15, 0x00 },
{ 16, 0x88 }, { 17, 0x88 }, { 18, 0x08 }, { 19, 0x08 }
};
static const int deemph_settings[] = {44100, 0, 48000, 32000};
static int ak4641_set_deemph(struct snd_soc_component *component)
{
struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
int i, best = 0;
for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
/* if deemphasis is on, select the nearest available rate */
if (ak4641->deemph && deemph_settings[i] != 0 &&
abs(deemph_settings[i] - ak4641->playback_fs) <
abs(deemph_settings[best] - ak4641->playback_fs))
best = i;
if (!ak4641->deemph && deemph_settings[i] == 0)
best = i;
}
dev_dbg(component->dev, "Set deemphasis %d\n", best);
return snd_soc_component_update_bits(component, AK4641_DAC, 0x3, best);
}
static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
int deemph = ucontrol->value.integer.value[0];
if (deemph > 1)
return -EINVAL;
ak4641->deemph = deemph;
return ak4641_set_deemph(component);
}
static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0] = ak4641->deemph;
return 0;
};
static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
static const char *ak4641_mic_select[] = {"Internal", "External"};
static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
static SOC_ENUM_SINGLE_DECL(ak4641_mono_out_enum,
AK4641_SIG1, 6, ak4641_mono_out);
static SOC_ENUM_SINGLE_DECL(ak4641_hp_out_enum,
AK4641_MODE2, 2, ak4641_hp_out);
static SOC_ENUM_SINGLE_DECL(ak4641_mic_select_enum,
AK4641_MIC, 1, ak4641_mic_select);
static SOC_ENUM_SINGLE_DECL(ak4641_mic_or_dac_enum,
AK4641_BTIF, 4, ak4641_mic_or_dac);
static const struct snd_kcontrol_new ak4641_snd_controls[] = {
SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
mono_gain_tlv),
SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
ak4641_get_deemph, ak4641_put_deemph),
SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
AK4641_RATT, 0, 255, 1, master_tlv),
SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
};
/* Mono 1 Mixer */
static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
mic_mono_sidetone_tlv),
SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
};
/* Stereo Mixer */
static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
mic_stereo_sidetone_tlv),
SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
};
/* Input Mixer */
static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
};
/* Mic mux */
static const struct snd_kcontrol_new ak4641_mic_mux_control =
SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
/* Input mux */
static const struct snd_kcontrol_new ak4641_input_mux_control =
SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
/* mono 2 switch */
static const struct snd_kcontrol_new ak4641_mono2_control =
SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
/* ak4641 dapm widgets */
static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
&ak4641_stereo_mixer_controls[0],
ARRAY_SIZE(ak4641_stereo_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
&ak4641_mono1_mixer_controls[0],
ARRAY_SIZE(ak4641_mono1_mixer_controls)),
SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
&ak4641_input_mixer_controls[0],
ARRAY_SIZE(ak4641_input_mixer_controls)),
SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
&ak4641_mic_mux_control),
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
&ak4641_input_mux_control),
SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
&ak4641_mono2_control),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("MOUT1"),
SND_SOC_DAPM_OUTPUT("MOUT2"),
SND_SOC_DAPM_OUTPUT("MICOUT"),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),
SND_SOC_DAPM_INPUT("MICIN"),
SND_SOC_DAPM_INPUT("MICEXT"),
SND_SOC_DAPM_INPUT("AUX"),
SND_SOC_DAPM_INPUT("AIN"),
};
static const struct snd_soc_dapm_route ak4641_audio_map[] = {
/* Stereo Mixer */
{"Stereo Mixer", "Playback Switch", "DAC"},
{"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
/* Mono 1 Mixer */
{"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
/* Mic */
{"Mic", NULL, "AIN"},
{"Mic Mux", "Internal", "Mic Int Bias"},
{"Mic Mux", "External", "Mic Ext Bias"},
{"Mic Int Bias", NULL, "MICIN"},
{"Mic Ext Bias", NULL, "MICEXT"},
{"MICOUT", NULL, "Mic Mux"},
/* Input Mux */
{"Input Mux", "Microphone", "Mic"},
{"Input Mux", "Voice DAC", "Voice DAC"},
/* Line Out */
{"LOUT", NULL, "Line Out"},
{"ROUT", NULL, "Line Out"},
{"Line Out", NULL, "Stereo Mixer"},
/* Mono 1 Out */
{"MOUT1", NULL, "Mono Out"},
{"Mono Out", NULL, "Mono1 Mixer"},
/* Mono 2 Out */
{"MOUT2", NULL, "Mono 2 Enable"},
{"Mono 2 Enable", "Switch", "Mono Out 2"},
{"Mono Out 2", NULL, "Stereo Mixer"},
{"Voice ADC", NULL, "Mono 2 Enable"},
/* Aux In */
{"AUX In", NULL, "AUX"},
/* ADC */
{"ADC", NULL, "Input Mixer"},
{"Input Mixer", "Mic Capture Switch", "Mic"},
{"Input Mixer", "Aux Capture Switch", "AUX In"},
};
static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
ak4641->sysclk = freq;
return 0;
}
static int ak4641_i2s_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 ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
int rate = params_rate(params), fs = 256;
u8 mode2;
if (rate)
fs = ak4641->sysclk / rate;
else
return -EINVAL;
/* set fs */
switch (fs) {
case 1024:
mode2 = (0x2 << 5);
break;
case 512:
mode2 = (0x1 << 5);
break;
case 256:
mode2 = (0x0 << 5);
break;
default:
dev_err(component->dev, "Error: unsupported fs=%d\n", fs);
return -EINVAL;
}
snd_soc_component_update_bits(component, AK4641_MODE2, (0x3 << 5), mode2);
/* Update de-emphasis filter for the new rate */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ak4641->playback_fs = rate;
ak4641_set_deemph(component);
}
return 0;
}
static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
u8 btif;
int ret;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
btif = (0x3 << 5);
break;
case SND_SOC_DAIFMT_LEFT_J:
btif = (0x2 << 5);
break;
case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */
btif = (0x0 << 5);
break;
case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */
btif = (0x1 << 5);
break;
default:
return -EINVAL;
}
ret = snd_soc_component_update_bits(component, AK4641_BTIF, (0x3 << 5), btif);
if (ret < 0)
return ret;
return 0;
}
static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
u8 mode1 = 0;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
mode1 = 0x02;
break;
case SND_SOC_DAIFMT_LEFT_J:
mode1 = 0x01;
break;
default:
return -EINVAL;
}
return snd_soc_component_write(component, AK4641_MODE1, mode1);
}
static int ak4641_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
return snd_soc_component_update_bits(component, AK4641_DAC, 0x20, mute ? 0x20 : 0);
}
static int ak4641_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);
struct ak4641_platform_data *pdata = component->dev->platform_data;
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
/* unmute */
snd_soc_component_update_bits(component, AK4641_DAC, 0x20, 0);
break;
case SND_SOC_BIAS_PREPARE:
/* mute */
snd_soc_component_update_bits(component, AK4641_DAC, 0x20, 0x20);
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
if (pdata && gpio_is_valid(pdata->gpio_power))
gpio_set_value(pdata->gpio_power, 1);
mdelay(1);
if (pdata && gpio_is_valid(pdata->gpio_npdn))
gpio_set_value(pdata->gpio_npdn, 1);
mdelay(1);
ret = regcache_sync(ak4641->regmap);
if (ret) {
dev_err(component->dev,
"Failed to sync cache: %d\n", ret);
return ret;
}
}
snd_soc_component_update_bits(component, AK4641_PM1, 0x80, 0x80);
snd_soc_component_update_bits(component, AK4641_PM2, 0x80, 0);
break;
case SND_SOC_BIAS_OFF:
snd_soc_component_update_bits(component, AK4641_PM1, 0x80, 0);
if (pdata && gpio_is_valid(pdata->gpio_npdn))
gpio_set_value(pdata->gpio_npdn, 0);
if (pdata && gpio_is_valid(pdata->gpio_power))
gpio_set_value(pdata->gpio_power, 0);
regcache_mark_dirty(ak4641->regmap);
break;
}
return 0;
}
#define AK4641_RATES (SNDRV_PCM_RATE_8000_48000)
#define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000)
#define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
.hw_params = ak4641_i2s_hw_params,
.set_fmt = ak4641_i2s_set_dai_fmt,
.mute_stream = ak4641_mute,
.set_sysclk = ak4641_set_dai_sysclk,
.no_capture_mute = 1,
};
static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
.hw_params = NULL, /* rates are controlled by BT chip */
.set_fmt = ak4641_pcm_set_dai_fmt,
.mute_stream = ak4641_mute,
.set_sysclk = ak4641_set_dai_sysclk,
.no_capture_mute = 1,
};
static struct snd_soc_dai_driver ak4641_dai[] = {
{
.name = "ak4641-hifi",
.id = 1,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = AK4641_RATES,
.formats = AK4641_FORMATS,
},
.capture = {
.stream_name = "HiFi Capture",
.channels_min = 1,
.channels_max = 2,
.rates = AK4641_RATES,
.formats = AK4641_FORMATS,
},
.ops = &ak4641_i2s_dai_ops,
.symmetric_rate = 1,
},
{
.name = "ak4641-voice",
.id = 1,
.playback = {
.stream_name = "Voice Playback",
.channels_min = 1,
.channels_max = 1,
.rates = AK4641_RATES_BT,
.formats = AK4641_FORMATS,
},
.capture = {
.stream_name = "Voice Capture",
.channels_min = 1,
.channels_max = 1,
.rates = AK4641_RATES_BT,
.formats = AK4641_FORMATS,
},
.ops = &ak4641_pcm_dai_ops,
.symmetric_rate = 1,
},
};
static const struct snd_soc_component_driver soc_component_dev_ak4641 = {
.controls = ak4641_snd_controls,
.num_controls = ARRAY_SIZE(ak4641_snd_controls),
.dapm_widgets = ak4641_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets),
.dapm_routes = ak4641_audio_map,
.num_dapm_routes = ARRAY_SIZE(ak4641_audio_map),
.set_bias_level = ak4641_set_bias_level,
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config ak4641_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = AK4641_BTIF,
.reg_defaults = ak4641_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(ak4641_reg_defaults),
.cache_type = REGCACHE_RBTREE,
};
static int ak4641_i2c_probe(struct i2c_client *i2c)
{
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
struct ak4641_priv *ak4641;
int ret;
ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
GFP_KERNEL);
if (!ak4641)
return -ENOMEM;
ak4641->regmap = devm_regmap_init_i2c(i2c, &ak4641_regmap);
if (IS_ERR(ak4641->regmap))
return PTR_ERR(ak4641->regmap);
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
ret = gpio_request_one(pdata->gpio_power,
GPIOF_OUT_INIT_LOW, "ak4641 power");
if (ret)
goto err_out;
}
if (gpio_is_valid(pdata->gpio_npdn)) {
ret = gpio_request_one(pdata->gpio_npdn,
GPIOF_OUT_INIT_LOW, "ak4641 npdn");
if (ret)
goto err_gpio;
udelay(1); /* > 150 ns */
gpio_set_value(pdata->gpio_npdn, 1);
}
}
i2c_set_clientdata(i2c, ak4641);
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_ak4641,
ak4641_dai, ARRAY_SIZE(ak4641_dai));
if (ret != 0)
goto err_gpio2;
return 0;
err_gpio2:
if (pdata) {
if (gpio_is_valid(pdata->gpio_power))
gpio_set_value(pdata->gpio_power, 0);
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
err_gpio:
if (pdata && gpio_is_valid(pdata->gpio_power))
gpio_free(pdata->gpio_power);
err_out:
return ret;
}
static void ak4641_i2c_remove(struct i2c_client *i2c)
{
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
gpio_set_value(pdata->gpio_power, 0);
gpio_free(pdata->gpio_power);
}
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
}
static const struct i2c_device_id ak4641_i2c_id[] = {
{ "ak4641", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
static struct i2c_driver ak4641_i2c_driver = {
.driver = {
.name = "ak4641",
},
.probe_new = ak4641_i2c_probe,
.remove = ak4641_i2c_remove,
.id_table = ak4641_i2c_id,
};
module_i2c_driver(ak4641_i2c_driver);
MODULE_DESCRIPTION("SoC AK4641 driver");
MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
MODULE_LICENSE("GPL");
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