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| author | Sean Paul <seanpaul@chromium.org> | 2012-10-25 16:31:06 +0000 |
|---|---|---|
| committer | Gerald Van Baren <gvb@unssw.com> | 2012-11-12 23:14:57 -0500 |
| commit | 202ff7537558edfd759b400cfe9e56c56fc7868c (patch) | |
| tree | 3a24471fde372eeb2da00b04d3a8d6522e407159 /include/fdtdec.h | |
| parent | aadef0a1bc3db81708471c9d18eb6c756659196f (diff) | |
| download | u-boot-imx-202ff7537558edfd759b400cfe9e56c56fc7868c.zip u-boot-imx-202ff7537558edfd759b400cfe9e56c56fc7868c.tar.gz u-boot-imx-202ff7537558edfd759b400cfe9e56c56fc7868c.tar.bz2 | |
fdt: Add polarity-aware gpio functions to fdtdec
Add get and set gpio functions to fdtdec that take into account the
polarity field in fdtdec_gpio_state.flags.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/fdtdec.h')
| -rw-r--r-- | include/fdtdec.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/fdtdec.h b/include/fdtdec.h index b5d7d2f..5164ce2 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -90,6 +90,22 @@ struct fdt_gpio_state { #define fdt_gpio_isvalid(x) ((x)->gpio != FDT_GPIO_NONE) /** + * Read the GPIO taking into account the polarity of the pin. + * + * @param gpio pointer to the decoded gpio + * @return value of the gpio if successful, < 0 if unsuccessful + */ +int fdtdec_get_gpio(struct fdt_gpio_state *gpio); + +/** + * Write the GPIO taking into account the polarity of the pin. + * + * @param gpio pointer to the decoded gpio + * @return 0 if successful + */ +int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val); + +/** * Find the next numbered alias for a peripheral. This is used to enumerate * all the peripherals of a certain type. * |