From: Nuno Sa <nuno.sa@xxxxxxxxxx>
If the powerdown GPIO is specified, we use it for reset. Otherwise,
fallback to a software reset.
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
---
sound/soc/codecs/adau1373.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/adau1373.c b/sound/soc/codecs/adau1373.c
index 9568ff933e12..16b9b2658341 100644
--- a/sound/soc/codecs/adau1373.c
+++ b/sound/soc/codecs/adau1373.c
@@ -8,6 +8,7 @@
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/property.h>
@@ -1485,6 +1486,11 @@ static const struct snd_soc_component_driver adau1373_component_driver = {
.endianness = 1,
};
+static void adau1373_reset(void *reset_gpio)
+{
+ gpiod_set_value_cansleep(reset_gpio, 1);
+}
+
static int adau1373_parse_fw(struct device *dev, struct adau1373 *adau1373)
{
int ret, drc_count;
@@ -1547,6 +1553,7 @@ static int adau1373_parse_fw(struct device *dev, struct adau1373 *adau1373)
static int adau1373_i2c_probe(struct i2c_client *client)
{
struct adau1373 *adau1373;
+ struct gpio_desc *gpiod;
int ret;
adau1373 = devm_kzalloc(&client->dev, sizeof(*adau1373), GFP_KERNEL);
@@ -1558,7 +1565,26 @@ static int adau1373_i2c_probe(struct i2c_client *client)
if (IS_ERR(adau1373->regmap))
return PTR_ERR(adau1373->regmap);
- regmap_write(adau1373->regmap, ADAU1373_SOFT_RESET, 0x00);
+ /*
+ * If the powerdown GPIO is specified, we use it for reset. Otherwise
+ * a software reset is done.
+ */
+ gpiod = devm_gpiod_get_optional(&client->dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+
+ if (gpiod) {
+ gpiod_set_value_cansleep(gpiod, 0);
+ fsleep(10);
+
+ ret = devm_add_action_or_reset(&client->dev, adau1373_reset,
+ gpiod);
+ if (ret)
+ return ret;
+ } else {
+ regmap_write(adau1373->regmap, ADAU1373_SOFT_RESET, 0x00);
+ }
dev_set_drvdata(&client->dev, adau1373);
--
2.47.0
