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lib, fdt: Adding fdtdec_get_uint function 

Adding fdtdec_get_uint function which is the
unsigned version for fdtdec_get_int

Signed-off-by: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Dinh Nguyen <dinh.linux@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Vikas Manocha <vikas.manocha@st.com>
Cc: Jagannadh Teki <jteki@openedev.com>
Cc: Pavel Machek <pavel@denx.de>
Cc: Heiko Schocher <hs@denx.de>
This commit is contained in:
Chin Liang See 2015-10-17 08:30:32 -05:00 committed by Marek Vasut
parent c624d07f3f
commit bfa3e55b44
2 changed files with 31 additions and 0 deletions
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13
include/fdtdec.h
View File

@ -489,6 +489,19 @@ int fdtdec_get_pci_bar32(const void *blob, int node,
s32 fdtdec_get_int(const void *blob, int node, const char *prop_name,
s32 default_val);
/**
* Unsigned version of fdtdec_get_int. The property must have at least
* 4 bytes of data. The value of the first cell is returned.
*
* @param blob FDT blob
* @param node node to examine
* @param prop_name name of property to find
* @param default_val default value to return if the property is not found
* @return unsigned integer value, if found, or default_val if not
*/
unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name,
unsigned int default_val);
/**
* Get a variable-sized number from a property
*

18
lib/fdtdec_common.c
View File

@ -36,3 +36,21 @@ int fdtdec_get_int(const void *blob, int node, const char *prop_name,
debug("(not found)\n");
return default_val;
}
unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name,
unsigned int default_val)
{
const int *cell;
int len;
debug("%s: %s: ", __func__, prop_name);
cell = fdt_getprop(blob, node, prop_name, &len);
if (cell && len >= sizeof(unsigned int)) {
unsigned int val = fdt32_to_cpu(cell[0]);
debug("%#x (%d)\n", val, val);
return val;
}
debug("(not found)\n");
return default_val;
}