diff options
| author | Kent Gibson <warthog618@gmail.com> | 2019-11-05 10:04:25 +0800 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-11-12 16:30:30 +0100 |
| commit | 2148ad7790ea4f1f0081e6404fbb776bdbc793bb (patch) | |
| tree | 43deadf60dfe7760cbb917f5460d416cd3c43ed5 /drivers/gpio/gpiolib.h | |
| parent | 7b479a8448c2e5ced36ca6a2d03178b920298ee5 (diff) | |
gpiolib: add support for disabling line bias
Allow pull up/down bias to be disabled, allowing the line to float
or to be biased only by external circuitry.
Use case is for where the bias has been applied previously, either
by default or by the user, but that setting may conflict with the
current use of the line.
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpiolib.h')
| -rw-r--r-- | drivers/gpio/gpiolib.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index b8b10a409c7b..ca9bc1e4803c 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -110,6 +110,7 @@ struct gpio_desc { #define FLAG_TRANSITORY 12 /* GPIO may lose value in sleep or reset */ #define FLAG_PULL_UP 13 /* GPIO has pull up enabled */ #define FLAG_PULL_DOWN 14 /* GPIO has pull down enabled */ +#define FLAG_BIAS_DISABLE 15 /* GPIO has pull disabled */ /* Connection label */ const char *label; |