diff options
Diffstat (limited to 'drivers/core/ofnode.c')
-rw-r--r-- | drivers/core/ofnode.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 96a5dd20bd1..5bc3b02996e 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -48,6 +48,46 @@ u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def) return def; } +int ofnode_read_u32_index(ofnode node, const char *propname, int index, + u32 *outp) +{ + const fdt32_t *cell; + int len; + + assert(ofnode_valid(node)); + debug("%s: %s: ", __func__, propname); + + if (ofnode_is_np(node)) + return of_read_u32_index(ofnode_to_np(node), propname, index, + outp); + + cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname, + &len); + if (!cell) { + debug("(not found)\n"); + return -EINVAL; + } + + if (len < (sizeof(int) * (index + 1))) { + debug("(not large enough)\n"); + return -EOVERFLOW; + } + + *outp = fdt32_to_cpu(cell[index]); + debug("%#x (%d)\n", *outp, *outp); + + return 0; +} + +u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index, + u32 def) +{ + assert(ofnode_valid(node)); + ofnode_read_u32_index(node, propname, index, &def); + + return def; +} + int ofnode_read_s32_default(ofnode node, const char *propname, s32 def) { assert(ofnode_valid(node)); |