diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-02-25 19:33:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-17 19:06:17 +0300 |
| commit | 8df70a5b4d0c18d5bef03c06a244ecd48472f2d2 (patch) | |
| tree | 511f4c2167b5351a572c01ca9c40c3903a3d1f71 /drivers/gpio/gpiolib-acpi.c | |
| parent | 845ec460537dcf07fa97f093612fa51c6247295a (diff) | |
| download | linux-8df70a5b4d0c18d5bef03c06a244ecd48472f2d2.tar.xz | |
gpiolib: acpi: Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk
commit 62d5247d239d4b48762192a251c647d7c997616a upstream.
On some systems the ACPI tables has wrong pin number and instead of
having a relative one it provides an absolute one in the global GPIO
number space.
Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk to cope with such cases.
Fixes: ba8c90c61847 ("gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2")
Depends-on: 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 834a12f3219e..0ff72424bbc1 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -649,6 +649,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) if (!lookup->desc) { const struct acpi_resource_gpio *agpio = &ares->data.gpio; bool gpioint = agpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT; + struct gpio_desc *desc; int pin_index; if (lookup->info.quirks & ACPI_GPIO_QUIRK_ONLY_GPIOIO && gpioint) @@ -661,8 +662,12 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) if (pin_index >= agpio->pin_table_length) return 1; - lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr, + if (lookup->info.quirks & ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER) + desc = gpio_to_desc(agpio->pin_table[pin_index]); + else + desc = acpi_get_gpiod(agpio->resource_source.string_ptr, agpio->pin_table[pin_index]); + lookup->desc = desc; lookup->info.pin_config = agpio->pin_config; lookup->info.gpioint = gpioint; |