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ASoC: rt5677: Add reset-gpio dts option 

It allows to configure codec's RESET pin gpio

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Anatol Pomozov 2015-05-13 08:25:15 -07:00 committed by Mark Brown
parent 5220f7fb49
commit b3b10e99b7
3 changed files with 33 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/sound/rt5677.txt
View File

@ -18,6 +18,7 @@ Required properties:
Optional properties:
- realtek,pow-ldo2-gpio : The GPIO that controls the CODEC's POW_LDO2 pin.
- realtek,reset-gpio : The GPIO that controls the CODEC's RESET pin.
- realtek,in1-differential
- realtek,in2-differential
@ -70,6 +71,7 @@ rt5677 {
realtek,pow-ldo2-gpio =
<&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
realtek,reset-gpio = <&gpio TEGRA_GPIO(BB, 3) GPIO_ACTIVE_LOW>;
realtek,in1-differential = "true";
realtek,gpio-config = /bits/ 8 <0 0 0 0 0 2>; /* pull up GPIO6 */
realtek,jd2-gpio = <3>; /* Enables Jack detection for GPIO6 */

32
sound/soc/codecs/rt5677.c
View File

@ -4763,6 +4763,8 @@ static int rt5677_remove(struct snd_soc_codec *codec)
regmap_write(rt5677->regmap, RT5677_RESET, 0x10ec);
if (gpio_is_valid(rt5677->pow_ldo2))
gpio_set_value_cansleep(rt5677->pow_ldo2, 0);
if (gpio_is_valid(rt5677->reset_pin))
gpio_set_value_cansleep(rt5677->reset_pin, 0);
return 0;
}
@ -4778,6 +4780,8 @@ static int rt5677_suspend(struct snd_soc_codec *codec)
if (gpio_is_valid(rt5677->pow_ldo2))
gpio_set_value_cansleep(rt5677->pow_ldo2, 0);
if (gpio_is_valid(rt5677->reset_pin))
gpio_set_value_cansleep(rt5677->reset_pin, 0);
}
return 0;
@ -4788,10 +4792,13 @@ static int rt5677_resume(struct snd_soc_codec *codec)
struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(codec);
if (!rt5677->dsp_vad_en) {
if (gpio_is_valid(rt5677->pow_ldo2)) {
if (gpio_is_valid(rt5677->pow_ldo2))
gpio_set_value_cansleep(rt5677->pow_ldo2, 1);
if (gpio_is_valid(rt5677->reset_pin))
gpio_set_value_cansleep(rt5677->reset_pin, 1);
if (gpio_is_valid(rt5677->pow_ldo2) ||
gpio_is_valid(rt5677->reset_pin))
msleep(10);
}
regcache_cache_only(rt5677->regmap, false);
regcache_sync(rt5677->regmap);
@ -5029,6 +5036,8 @@ static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np)
rt5677->pow_ldo2 = of_get_named_gpio(np,
"realtek,pow-ldo2-gpio", 0);
rt5677->reset_pin = of_get_named_gpio(np,
"realtek,reset-gpio", 0);
/*
* POW_LDO2 is optional (it may be statically tied on the board).
@ -5039,6 +5048,9 @@ static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np)
if (!gpio_is_valid(rt5677->pow_ldo2) &&
(rt5677->pow_ldo2 != -ENOENT))
return rt5677->pow_ldo2;
if (!gpio_is_valid(rt5677->reset_pin) &&
(rt5677->reset_pin != -ENOENT))
return rt5677->reset_pin;
of_property_read_u8_array(np, "realtek,gpio-config",
rt5677->pdata.gpio_config, RT5677_GPIO_NUM);
@ -5140,6 +5152,7 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
}
} else {
rt5677->pow_ldo2 = -EINVAL;
rt5677->reset_pin = -EINVAL;
}
if (gpio_is_valid(rt5677->pow_ldo2)) {
@ -5151,6 +5164,21 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
rt5677->pow_ldo2, ret);
return ret;
}
}
if (gpio_is_valid(rt5677->reset_pin)) {
ret = devm_gpio_request_one(&i2c->dev, rt5677->reset_pin,
GPIOF_OUT_INIT_HIGH,
"RT5677 RESET");
if (ret < 0) {
dev_err(&i2c->dev, "Failed to request RESET %d: %d\n",
rt5677->reset_pin, ret);
return ret;
}
}
if (gpio_is_valid(rt5677->pow_ldo2) ||
gpio_is_valid(rt5677->reset_pin)) {
/* Wait a while until I2C bus becomes available. The datasheet
* does not specify the exact we should wait but startup
* sequence mentiones at least a few milliseconds.

1
sound/soc/codecs/rt5677.h
View File

@ -1776,6 +1776,7 @@ struct rt5677_priv {
int pll_in;
int pll_out;
int pow_ldo2; /* POW_LDO2 pin */
int reset_pin; /* RESET pin */
enum rt5677_type type;
#ifdef CONFIG_GPIOLIB
struct gpio_chip gpio_chip;