From 5921f6a2924827548caf55b28a6827b9d856e37f Mon Sep 17 00:00:00 2001 From: Abhilash Kesavan Date: Thu, 25 Oct 2012 16:31:01 +0000 Subject: [PATCH] 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 Commit-Ready: Che-Liang Chiou Signed-off-by: Simon Glass --- include/fdtdec.h | 16 ++++++++++++++++ lib/fdtdec.c | 5 ++--- 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/include/fdtdec.h b/include/fdtdec.h index 341e6a18a0..e70714b2f2 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -344,6 +344,22 @@ int fdtdec_get_bool(const void *blob, int node, const char *prop_name); 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. diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 557097217c..32f03cc82b 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -426,9 +426,8 @@ int fdtdec_get_bool(const void *blob, int node, const char *prop_name) * @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. */ -static int fdtdec_decode_gpios(const void *blob, int node, - const char *prop_name, struct fdt_gpio_state *gpio, - int max_count) +int fdtdec_decode_gpios(const void *blob, int node, const char *prop_name, + struct fdt_gpio_state *gpio, int max_count) { const struct fdt_property *prop; const u32 *cell; -- 2.25.1