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authorBen Zhang <benzh@chromium.org>2015-06-22 21:12:59 +0300
committerMark Brown <broonie@kernel.org>2015-07-07 15:34:03 +0300
commitefd901ee4bc8312e3bbf5561fdab8e3765e26334 (patch)
treed3d040077347425d190044864fa260bffa1aa3ce /sound/soc
parentaa0bcc5c44437457307c8c22e57a67bb57424041 (diff)
downloadlinux-efd901ee4bc8312e3bbf5561fdab8e3765e26334.tar.xz
ASoC: rt5677: Switch to use descriptor-based gpiod API
This patch makes the driver use the new descriptor-based gpiod API so that gpio assignment info can be provided by Device Tree, ACPI or board files. Signed-off-by: Ben Zhang <benzh@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/rt5677.c85
-rw-r--r--sound/soc/codecs/rt5677.h5
2 files changed, 33 insertions, 57 deletions
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 9048ba7efee1..232243009e1e 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -15,13 +15,11 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
-#include <linux/of_gpio.h>
#include <linux/regmap.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/firmware.h>
-#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -4764,10 +4762,10 @@ static int rt5677_remove(struct snd_soc_codec *codec)
struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(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);
+ if (rt5677->pow_ldo2)
+ gpiod_set_value_cansleep(rt5677->pow_ldo2, 0);
+ if (rt5677->reset_pin)
+ gpiod_set_value_cansleep(rt5677->reset_pin, 0);
return 0;
}
@@ -4781,10 +4779,10 @@ static int rt5677_suspend(struct snd_soc_codec *codec)
regcache_cache_only(rt5677->regmap, true);
regcache_mark_dirty(rt5677->regmap);
- 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);
+ if (rt5677->pow_ldo2)
+ gpiod_set_value_cansleep(rt5677->pow_ldo2, 0);
+ if (rt5677->reset_pin)
+ gpiod_set_value_cansleep(rt5677->reset_pin, 0);
}
return 0;
@@ -4795,12 +4793,11 @@ 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))
- 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))
+ if (rt5677->pow_ldo2)
+ gpiod_set_value_cansleep(rt5677->pow_ldo2, 1);
+ if (rt5677->reset_pin)
+ gpiod_set_value_cansleep(rt5677->reset_pin, 1);
+ if (rt5677->pow_ldo2 || rt5677->reset_pin)
msleep(10);
regcache_cache_only(rt5677->regmap, false);
@@ -5037,24 +5034,6 @@ static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np)
rt5677->pdata.lout3_diff = of_property_read_bool(np,
"realtek,lout3-differential");
- 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).
- * -ENOENT means that the property doesn't exist, i.e. there is no
- * GPIO, so is not an error. Any other error code means the property
- * exists, but could not be parsed.
- */
- 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);
@@ -5158,30 +5137,26 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
rt5677->reset_pin = -EINVAL;
}
- if (gpio_is_valid(rt5677->pow_ldo2)) {
- ret = devm_gpio_request_one(&i2c->dev, rt5677->pow_ldo2,
- GPIOF_OUT_INIT_HIGH,
- "RT5677 POW_LDO2");
- if (ret < 0) {
- dev_err(&i2c->dev, "Failed to request POW_LDO2 %d: %d\n",
- rt5677->pow_ldo2, ret);
- return ret;
- }
+ /* pow-ldo2 and reset are optional. The codec pins may be statically
+ * connected on the board without gpios. If the gpio device property
+ * isn't specified, devm_gpiod_get_optional returns NULL.
+ */
+ rt5677->pow_ldo2 = devm_gpiod_get_optional(&i2c->dev,
+ "realtek,pow-ldo2", GPIOD_OUT_HIGH);
+ if (IS_ERR(rt5677->pow_ldo2)) {
+ ret = PTR_ERR(rt5677->pow_ldo2);
+ dev_err(&i2c->dev, "Failed to request POW_LDO2: %d\n", ret);
+ rt5677->pow_ldo2 = 0;
}
-
- 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;
- }
+ rt5677->reset_pin = devm_gpiod_get_optional(&i2c->dev,
+ "realtek,reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(rt5677->reset_pin)) {
+ ret = PTR_ERR(rt5677->reset_pin);
+ dev_err(&i2c->dev, "Failed to request RESET: %d\n", ret);
+ rt5677->reset_pin = 0;
}
- if (gpio_is_valid(rt5677->pow_ldo2) ||
- gpio_is_valid(rt5677->reset_pin)) {
+ if (rt5677->pow_ldo2 || 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.
diff --git a/sound/soc/codecs/rt5677.h b/sound/soc/codecs/rt5677.h
index 7eca38a23255..d46855a42c40 100644
--- a/sound/soc/codecs/rt5677.h
+++ b/sound/soc/codecs/rt5677.h
@@ -14,6 +14,7 @@
#include <sound/rt5677.h>
#include <linux/gpio/driver.h>
+#include <linux/gpio/consumer.h>
/* Info */
#define RT5677_RESET 0x00
@@ -1775,8 +1776,8 @@ struct rt5677_priv {
int pll_src;
int pll_in;
int pll_out;
- int pow_ldo2; /* POW_LDO2 pin */
- int reset_pin; /* RESET pin */
+ struct gpio_desc *pow_ldo2; /* POW_LDO2 pin */
+ struct gpio_desc *reset_pin; /* RESET pin */
enum rt5677_type type;
#ifdef CONFIG_GPIOLIB
struct gpio_chip gpio_chip;