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| author | Alexandre Courbot <acourbot@nvidia.com> | 2013-10-17 10:21:36 -0700 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-10-19 23:24:45 +0200 |
| commit | 79a9becda8940deb2274b5aa4577c86d52ee7ecb (patch) | |
| tree | 2e10b344abcf76446ff97855d280fe9b7fb34ef0 /Documentation/scsi/LICENSE.qla2xxx | |
| parent | b41fb43911b4cb864812adec88d028cc6219f23e (diff) | |
| download | blackbird-op-linux-79a9becda8940deb2274b5aa4577c86d52ee7ecb.tar.gz blackbird-op-linux-79a9becda8940deb2274b5aa4577c86d52ee7ecb.zip | |
gpiolib: export descriptor-based GPIO interface
This patch exports the gpiod_* family of API functions, a safer
alternative to the legacy GPIO interface. Differences between the gpiod
and legacy gpio APIs are:
- gpio works with integers, whereas gpiod operates on opaque handlers
which cannot be forged or used before proper acquisition
- gpiod get/set functions are aware of the active low state of a GPIO
- gpio consumers should now include <linux/gpio/consumer.h> to access
the new interface, whereas chips drivers will use
<linux/gpio/driver.h>
The legacy gpio API is now built as inline functions on top of gpiod.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/scsi/LICENSE.qla2xxx')
0 files changed, 0 insertions, 0 deletions
