diff options
| author | Kent Gibson <warthog618@gmail.com> | 2019-11-05 10:04:24 +0800 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-11-12 16:30:30 +0100 |
| commit | 7b479a8448c2e5ced36ca6a2d03178b920298ee5 (patch) | |
| tree | 62fed6338f4c5c1ce92f88d40a7f21f14317c50c /drivers/gpio | |
| parent | 9225d5169d110734099a82c39c073a11e399cb3f (diff) | |
| download | linux-7b479a8448c2e5ced36ca6a2d03178b920298ee5.tar.bz2 | |
gpiolib: add support for pull up/down to lineevent_create
Add support for pull up/down to lineevent_create.
Use cases include receiving asynchronous presses from a
push button without an external pull up/down.
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 53086724c051..b7d7bb8bd20d 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -951,6 +951,10 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip) if (lflags & GPIOHANDLE_REQUEST_ACTIVE_LOW) set_bit(FLAG_ACTIVE_LOW, &desc->flags); + if (lflags & GPIOHANDLE_REQUEST_BIAS_PULL_DOWN) + set_bit(FLAG_PULL_DOWN, &desc->flags); + if (lflags & GPIOHANDLE_REQUEST_BIAS_PULL_UP) + set_bit(FLAG_PULL_UP, &desc->flags); ret = gpiod_direction_input(desc); if (ret) |