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gpiolib: acpi: support bias pull disable
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On top of looking at PULL_UP and PULL_DOWN flags, also look at
PULL_DISABLE and set the appropriate GPIO flag. The GPIO core will then
pass down this to controllers that support it.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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Nuno Sá authored and Bartosz Golaszewski committed Jul 19, 2022
1 parent 31bea23 commit 6fd03f0
Showing 1 changed file with 3 additions and 0 deletions.
3 changes: 3 additions & 0 deletions drivers/gpio/gpiolib-acpi.c
Original file line number Diff line number Diff line change
Expand Up @@ -687,6 +687,9 @@ int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
case ACPI_PIN_CONFIG_PULLDOWN:
*lookupflags |= GPIO_PULL_DOWN;
break;
case ACPI_PIN_CONFIG_NOPULL:
*lookupflags |= GPIO_PULL_DISABLE;
break;
default:
break;
}
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