diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2025-04-04 01:02:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 13:20:09 +0200 |
| commit | 89ecf105143b39c22f49c18da451e88578e08c03 (patch) | |
| tree | c668d781368e09cf0a6a0e6a33c931e37bdf366c | |
| parent | f41f7b3d9daff26e34ee820af5a44d6c66e23412 (diff) | |
usb: typec: mux: fsa4480: add regulator support
The fsa4480 vcc lane could be driven by some external regulator.
This patch is adding support to enable the regulator before probing.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250404-ml-topic-typec-mux-fs4480-v1-1-475377ef22a3@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/typec/mux/fsa4480.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/typec/mux/fsa4480.c b/drivers/usb/typec/mux/fsa4480.c index f71dba8bf07c..c54e42c7e6a1 100644 --- a/drivers/usb/typec/mux/fsa4480.c +++ b/drivers/usb/typec/mux/fsa4480.c @@ -12,6 +12,7 @@ #include <linux/regmap.h> #include <linux/usb/typec_dp.h> #include <linux/usb/typec_mux.h> +#include <linux/regulator/consumer.h> #define FSA4480_DEVICE_ID 0x00 #define FSA4480_DEVICE_ID_VENDOR_ID GENMASK(7, 6) @@ -273,6 +274,10 @@ static int fsa4480_probe(struct i2c_client *client) if (IS_ERR(fsa->regmap)) return dev_err_probe(dev, PTR_ERR(fsa->regmap), "failed to initialize regmap\n"); + ret = devm_regulator_get_enable_optional(dev, "vcc"); + if (ret && ret != -ENODEV) + return dev_err_probe(dev, ret, "Failed to get regulator\n"); + ret = regmap_read(fsa->regmap, FSA4480_DEVICE_ID, &val); if (ret) return dev_err_probe(dev, -ENODEV, "FSA4480 not found\n"); |