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fdt: Add function to read boolean property

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Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Commit-Ready: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Gabe Black 2012-10-25 16:31:04 +00:00 committed by Gerald Van Baren
parent 7cde397b21
commit 79289c0b5f
2 changed files with 24 additions and 0 deletions
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10
include/fdtdec.h
View file

@ -398,6 +398,16 @@ int fdtdec_setup_gpio(struct fdt_gpio_state *gpio);
int fdtdec_get_config_int(const void *blob, const char *prop_name, int fdtdec_get_config_int(const void *blob, const char *prop_name,
int default_val); int default_val);
/**
* Look in the FDT for a config item with the given name
* and return whether it exists.
*
* @param blob FDT blob
* @param prop_name property name to look up
* @return 1, if it exists, or 0 if not
*/
int fdtdec_get_config_bool(const void *blob, const char *prop_name);
/** /**
* Look in the FDT for a config item with the given name and return its value * Look in the FDT for a config item with the given name and return its value
* as a string. * as a string.

14
lib/fdtdec.c
View file

@ -524,6 +524,20 @@ int fdtdec_get_config_int(const void *blob, const char *prop_name,
return fdtdec_get_int(blob, config_node, prop_name, default_val); return fdtdec_get_int(blob, config_node, prop_name, default_val);
} }
int fdtdec_get_config_bool(const void *blob, const char *prop_name)
{
int config_node;
const void *prop;
debug("%s: %s\n", __func__, prop_name);
config_node = fdt_path_offset(blob, "/config");
if (config_node < 0)
return 0;
prop = fdt_get_property(blob, config_node, prop_name, NULL);
return prop != NULL;
}
char *fdtdec_get_config_string(const void *blob, const char *prop_name) char *fdtdec_get_config_string(const void *blob, const char *prop_name)
{ {
const char *nodep; const char *nodep;