[PATCH v2 3/3] ASoC: codec: wcd9335: Convert to GPIO descriptors

["Peng Fan (OSS)" <peng.fan@oss.nxp.com>]

From: Peng Fan <peng.fan@nxp.com>

of_gpio.h is deprecated, update the driver to use GPIO descriptors.
- Use dev_gpiod_get to get GPIO descriptor.
- Use gpiod_set_value to configure output value.

With legacy of_gpio API, the driver set gpio value 0 to assert reset,
and 1 to deassert reset. And the reset-gpios use GPIO_ACTIVE_LOW flag in
DTS, so set GPIOD_OUT_LOW when get GPIO descriptors, and set value 1 means
output low, set value 0 means output high with gpiod API.

The in-tree DTS files have the right polarity set up already so we can
expect this to "just work"

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 sound/soc/codecs/wcd9335.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c
index 7cef43bb2a8800971604b0e1ac55aac26c5919bd..8ee4360aff9293178e338e3ef300c37f6f2ac809 100644
--- a/sound/soc/codecs/wcd9335.c
+++ b/sound/soc/codecs/wcd9335.c
@@ -17,7 +17,7 @@
 #include <sound/soc.h>
 #include <sound/pcm_params.h>
 #include <sound/soc-dapm.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
 #include <sound/tlv.h>
@@ -331,7 +331,7 @@ struct wcd9335_codec {
 	int comp_enabled[COMPANDER_MAX];
 
 	int intr1;
-	int reset_gpio;
+	struct gpio_desc *reset_gpio;
 	struct regulator_bulk_data supplies[WCD9335_MAX_SUPPLY];
 
 	unsigned int rx_port_value[WCD9335_RX_MAX];
@@ -4975,12 +4975,11 @@ static const struct regmap_irq_chip wcd9335_regmap_irq1_chip = {
 static int wcd9335_parse_dt(struct wcd9335_codec *wcd)
 {
 	struct device *dev = wcd->dev;
-	struct device_node *np = dev->of_node;
 	int ret;
 
-	wcd->reset_gpio = of_get_named_gpio(np,	"reset-gpios", 0);
-	if (wcd->reset_gpio < 0)
-		return dev_err_probe(dev, wcd->reset_gpio, "Reset GPIO missing from DT\n");
+	wcd->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(wcd->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(wcd->reset_gpio), "Reset GPIO missing from DT\n");
 
 	wcd->mclk = devm_clk_get(dev, "mclk");
 	if (IS_ERR(wcd->mclk))
@@ -5023,9 +5022,9 @@ static int wcd9335_power_on_reset(struct wcd9335_codec *wcd)
 	 */
 	usleep_range(600, 650);
 
-	gpio_direction_output(wcd->reset_gpio, 0);
+	gpiod_set_value(wcd->reset_gpio, 1);
 	msleep(20);
-	gpio_set_value(wcd->reset_gpio, 1);
+	gpiod_set_value(wcd->reset_gpio, 0);
 	msleep(20);
 
 	return 0;

-- 
2.37.1