diff options
| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2025-03-27 10:06:29 +0000 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2025-05-08 14:55:36 +0200 |
| commit | 12d3c69ba2734b5908e0ac8ac2dcbd0cc28fef3a (patch) | |
| tree | cda89142d14ea17be442d6d8d40c610650f15a5d /drivers/mux/gpio.c | |
| parent | e9c695067b68da6b39e0d70cd4a061d0f70050d3 (diff) | |
mux: gpio: add optional regulator support
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>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250327100633.11530-3-srinivas.kandagatla@linaro.org
[krzk: Adjust dev_err message per Johan's review]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/mux/gpio.c')
| -rw-r--r-- | drivers/mux/gpio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mux/gpio.c b/drivers/mux/gpio.c index 5710879cd47f..4cc3202c58f3 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; @@ -80,6 +81,10 @@ 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, "failed to get/enable mux supply\n"); + ret = devm_mux_chip_register(dev, mux_chip); if (ret < 0) return ret; |