ASoC: cs42l52: Add platform data for reset gpio
This patch adds platform data support for a reset GPIO.
Also uses reset_gpio to toggle reset of the CODEC
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c
index be2ba1b..8367f3c 100644
--- a/sound/soc/codecs/cs42l52.c
+++ b/sound/soc/codecs/cs42l52.c
@@ -17,6 +17,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/gpio.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/input.h>
@@ -1205,6 +1206,7 @@
const struct i2c_device_id *id)
{
struct cs42l52_private *cs42l52;
+ struct cs42l52_platform_data *pdata = dev_get_platdata(&i2c_client->dev);
int ret;
unsigned int devid = 0;
unsigned int reg;
@@ -1222,11 +1224,22 @@
return ret;
}
- i2c_set_clientdata(i2c_client, cs42l52);
+ if (pdata)
+ cs42l52->pdata = *pdata;
- if (dev_get_platdata(&i2c_client->dev))
- memcpy(&cs42l52->pdata, dev_get_platdata(&i2c_client->dev),
- sizeof(cs42l52->pdata));
+ if (cs42l52->pdata.reset_gpio) {
+ ret = gpio_request_one(cs42l52->pdata.reset_gpio,
+ GPIOF_OUT_INIT_HIGH, "CS42L52 /RST");
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "Failed to request /RST %d: %d\n",
+ cs42l52->pdata.reset_gpio, ret);
+ return ret;
+ }
+ gpio_set_value_cansleep(cs42l52->pdata.reset_gpio, 0);
+ gpio_set_value_cansleep(cs42l52->pdata.reset_gpio, 1);
+ }
+
+ i2c_set_clientdata(i2c_client, cs42l52);
ret = regmap_register_patch(cs42l52->regmap, cs42l52_threshold_patch,
ARRAY_SIZE(cs42l52_threshold_patch));