diff mbox series

[v3,2/6] mux: gpio: add optional regulator support

Message ID 20250324110606.32001-3-srinivas.kandagatla@linaro.org
State Superseded
Headers show
Series ASoC: wcd938x: enable t14s audio headset | expand

Commit Message

Srinivas Kandagatla March 24, 2025, 11:06 a.m. UTC 
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

Some of the external muxes needs powering up using a regulator.
This is the case with Lenovo T14s laptop which has a external audio mux
to handle US/EURO headsets.

Add support to the driver to handle this optional regulator.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Christopher Obbard <christopher.obbard@linaro.org>
---
 drivers/mux/gpio.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mux/gpio.c b/drivers/mux/gpio.c
index cc5f2c1861d4..d1607f287755 100644
--- a/drivers/mux/gpio.c
+++ b/drivers/mux/gpio.c
@@ -15,6 +15,7 @@ 
 #include <linux/mux/driver.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
+#include <linux/regulator/consumer.h>
 
 struct mux_gpio {
 	struct gpio_descs *gpios;
@@ -82,6 +83,10 @@  static int mux_gpio_probe(struct platform_device *pdev)
 		mux_chip->mux->idle_state = idle_state;
 	}
 
+	ret = devm_regulator_get_enable_optional(dev, "mux");
+	if (ret && ret != -ENODEV)
+		return dev_err_probe(dev, ret, "Couldn't retrieve/enable gpio mux supply\n");
+
 	ret = devm_mux_chip_register(dev, mux_chip);
 	if (ret < 0)
 		return ret;