diff options
| author | Mario Limonciello (AMD) <superm1@kernel.org> | 2025-08-20 18:33:11 -0500 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2025-08-21 11:40:42 +0200 |
| commit | 16c07342b5425b86547146a6e51d9e32cee8d300 (patch) | |
| tree | 3344f0d368192226916d1a2c5a5db0900314f1fe | |
| parent | 8f5ae30d69d7543eee0d70083daf4de8fe15d585 (diff) | |
gpiolib: acpi: Program debounce when finding GPIO
When soc-button-array looks up the GPIO to use it calls acpi_find_gpio()
which will parse _CRS.
acpi_find_gpio.cold (drivers/gpio/gpiolib-acpi-core.c:953)
gpiod_find_and_request (drivers/gpio/gpiolib.c:4598 drivers/gpio/gpiolib.c:4625)
gpiod_get_index (drivers/gpio/gpiolib.c:4877)
The GPIO is setup basically, but the debounce information is discarded.
The platform will assert what debounce should be in _CRS, so program it
at the time it's available.
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
| -rw-r--r-- | drivers/gpio/gpiolib-acpi-core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-acpi-core.c b/drivers/gpio/gpiolib-acpi-core.c index 12b24a717e43..e81a29902bb2 100644 --- a/drivers/gpio/gpiolib-acpi-core.c +++ b/drivers/gpio/gpiolib-acpi-core.c @@ -944,6 +944,7 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, bool can_fallback = acpi_can_fallback_to_crs(adev, con_id); struct acpi_gpio_info info; struct gpio_desc *desc; + int ret; desc = __acpi_find_gpio(fwnode, con_id, idx, can_fallback, &info); if (IS_ERR(desc)) @@ -957,6 +958,12 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, acpi_gpio_update_gpiod_flags(dflags, &info); acpi_gpio_update_gpiod_lookup_flags(lookupflags, &info); + + /* ACPI uses hundredths of milliseconds units */ + ret = gpio_set_debounce_timeout(desc, info.debounce * 10); + if (ret) + return ERR_PTR(ret); + return desc; } |