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ASoC: rk3308_codec: add support checking external micbias

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Change-Id: I644faff116184ee3fb927cff6531f8d4ac497edc
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
This commit is contained in:
Xing Zheng
2019-03-27 19:46:24 +08:00
committed by Sugar Zhang
parent b96531209c
commit 782f00a43a
1 changed files with 57 additions and 2 deletions
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59
sound/soc/codecs/rk3308_codec.c
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@@ -29,6 +29,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/rockchip/grf.h>
#include <linux/version.h>
@@ -119,6 +120,12 @@ enum {
DAC_LINEOUT_HPOUT = 11,
};
enum {
EXT_MICBIAS_NONE = 0,
EXT_MICBIAS_FUNC1, /* enable external micbias via GPIO */
EXT_MICBIAS_FUNC2, /* enable external micbias via regulator */
};
enum {
PATH_IDLE = 0,
PATH_BUSY,
@@ -144,11 +151,13 @@ struct rk3308_codec_priv {
struct clk *pclk;
struct clk *mclk_rx;
struct clk *mclk_tx;
struct gpio_desc *micbias_en_gpio;
struct gpio_desc *hp_ctl_gpio;
struct gpio_desc *spk_ctl_gpio;
struct gpio_desc *pa_drv_gpio;
struct snd_soc_codec *codec;
struct snd_soc_jack *hpdet_jack;
struct regulator *vcc_micbias;
u32 codec_ver;
/*
@@ -180,6 +189,7 @@ struct rk3308_codec_priv {
int dac_output;
int dac_path_state;
int ext_micbias;
int pm_state;
/* AGC L/R Off/on */
@@ -2831,6 +2841,9 @@ static int rk3308_codec_micbias_enable(struct rk3308_codec_priv *rk3308,
{
int ret;
if (rk3308->ext_micbias != EXT_MICBIAS_NONE)
return 0;
/* 0. Power up the ACODEC and keep the AVDDH stable */
/* Step 1. Configure ACODEC_ADC_ANA_CON7[2:0] to the certain value */
@@ -2889,6 +2902,9 @@ static int rk3308_codec_micbias_enable(struct rk3308_codec_priv *rk3308,
static int rk3308_codec_micbias_disable(struct rk3308_codec_priv *rk3308)
{
if (rk3308->ext_micbias != EXT_MICBIAS_NONE)
return 0;
/* Step 0. Enable the MICBIAS and keep the Audio Codec stable */
/* Do nothing */
@@ -3934,8 +3950,10 @@ static int rk3308_codec_dapm_mic_gains(struct rk3308_codec_priv *rk3308)
static int rk3308_codec_check_micbias(struct rk3308_codec_priv *rk3308,
struct device_node *np)
{
int num = 0;
struct device *dev = (struct device *)rk3308->plat_dev;
int num = 0, ret;
/* Check internal micbias */
rk3308->micbias1 =
of_property_read_bool(np, "rockchip,micbias1");
if (rk3308->micbias1)
@@ -3949,6 +3967,39 @@ static int rk3308_codec_check_micbias(struct rk3308_codec_priv *rk3308,
rk3308->micbias_volt = RK3308_ADC_MICBIAS_VOLT_0_85; /* by default */
rk3308->micbias_num = num;
/* Check external micbias */
rk3308->ext_micbias = EXT_MICBIAS_NONE;
rk3308->micbias_en_gpio = devm_gpiod_get_optional(dev,
"micbias-en",
GPIOD_IN);
if (!rk3308->micbias_en_gpio) {
dev_info(dev, "Don't need micbias-en gpio\n");
} else if (IS_ERR(rk3308->micbias_en_gpio)) {
ret = PTR_ERR(rk3308->micbias_en_gpio);
dev_err(dev, "Unable to claim gpio micbias-en\n");
return ret;
} else if (gpiod_get_value(rk3308->micbias_en_gpio)) {
rk3308->ext_micbias = EXT_MICBIAS_FUNC1;
}
rk3308->vcc_micbias = devm_regulator_get_optional(dev,
"vmicbias");
if (IS_ERR(rk3308->vcc_micbias)) {
if (PTR_ERR(rk3308->vcc_micbias) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_info(dev, "no vmicbias regulator found\n");
} else {
ret = regulator_enable(rk3308->vcc_micbias);
if (ret) {
dev_err(dev, "Can't enable vmicbias: %d\n", ret);
return ret;
}
rk3308->ext_micbias = EXT_MICBIAS_FUNC2;
}
dev_info(dev, "Check ext_micbias: %d\n", rk3308->ext_micbias);
return 0;
}
@@ -3984,6 +4035,7 @@ static int rk3308_codec_prepare(struct rk3308_codec_priv *rk3308)
static int rk3308_probe(struct snd_soc_codec *codec)
{
struct rk3308_codec_priv *rk3308 = snd_soc_codec_get_drvdata(codec);
int ext_micbias;
rk3308->codec = codec;
rk3308_codec_set_dac_path_state(rk3308, PATH_IDLE);
@@ -3991,8 +4043,11 @@ static int rk3308_probe(struct snd_soc_codec *codec)
rk3308_codec_reset(codec);
rk3308_codec_power_on(rk3308);
/* From vendor recommend */
/* From vendor recommend, disable micbias at first. */
ext_micbias = rk3308->ext_micbias;
rk3308->ext_micbias = EXT_MICBIAS_NONE;
rk3308_codec_micbias_disable(rk3308);
rk3308->ext_micbias = ext_micbias;
rk3308_codec_prepare(rk3308);
if (!rk3308->no_hp_det)