diff options
| author | Abhilash Kesavan <a.kesavan@samsung.com> | 2012-10-25 16:31:01 +0000 |
|---|---|---|
| committer | Gerald Van Baren <gvb@unssw.com> | 2012-11-12 23:00:35 -0500 |
| commit | 5921f6a2924827548caf55b28a6827b9d856e37f (patch) | |
| tree | ee9940600b7daaf68683aaae8c0199c02d3a3c8a /include | |
| parent | f20c461984c3d986fde037d4c5bf600aa0497676 (diff) | |
fdt: Add function for decoding multiple gpios globally available
Samsung's SDHCI bindings require multiple gpios to be parsed and
configured at a time. Export the already available fdtdec_decode_gpios
for this purpose.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Commit-Ready: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -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 341e6a18a0..e70714b2f2 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -345,6 +345,22 @@ int fdtdec_decode_gpio(const void *blob, int node, const char *prop_name, struct fdt_gpio_state *gpio); /** + * Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no + * terminating item. + * + * @param blob FDT blob to use + * @param node Node to look at + * @param prop_name Node property name + * @param gpio Array of gpio elements to fill from FDT. This will be + * untouched if either 0 or an error is returned + * @param max_count Maximum number of elements allowed + * @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would + * be exceeded, or -FDT_ERR_NOTFOUND if the property is missing. + */ +int fdtdec_decode_gpios(const void *blob, int node, const char *prop_name, + struct fdt_gpio_state *gpio, int max_count); + +/** * Set up a GPIO pin according to the provided gpio information. At present this * just requests the GPIO. * |