diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-02-17 18:56:22 +0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-03-05 18:49:44 +0400 |
| commit | 25553ff0756c59b617af6bdd280c94e943164184 (patch) | |
| tree | 6ca9ec045b5d2e10523fdf46facac59aa683f4ce /drivers/gpio/gpio-nomadik.c | |
| parent | aca5ce14eb773a75e5d935968b2e390dc5bd29c3 (diff) | |
| download | linux-25553ff0756c59b617af6bdd280c94e943164184.tar.xz | |
gpio: gpiolib: Support for open source/emitter gpios
Adding support for the open source gpio on which client
can specify the open source property through GPIO flag
GPIOF_OPEN_SOURCE at the time of gpio request.
The open source pins are normally pulled low and it
cannot be driven to output with value of 0 and so
when client request for setting the pin to LOW, the
gpio will be set to input direction to make pin in tristate
and hence PULL-DOWN on pins will make the state to LOW.
The open source pin can be driven to HIGH by setting output
with value of 1.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/gpio/gpio-nomadik.c')
0 files changed, 0 insertions, 0 deletions