diff options
Diffstat (limited to 'drivers/core/ofnode.c')
| -rw-r--r-- | drivers/core/ofnode.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index a4dc9bde085..8311282abf6 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -344,6 +344,36 @@ int ofnode_read_u32_index(ofnode node, const char *propname, int index, return 0; } +int ofnode_read_u64_index(ofnode node, const char *propname, int index, + u64 *outp) +{ + const fdt64_t *cell; + int len; + + assert(ofnode_valid(node)); + + if (ofnode_is_np(node)) + return of_read_u64_index(ofnode_to_np(node), propname, index, + outp); + + cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), + propname, &len); + if (!cell) { + debug("(not found)\n"); + return -EINVAL; + } + + if (len < (sizeof(u64) * (index + 1))) { + debug("(not large enough)\n"); + return -EOVERFLOW; + } + + *outp = fdt64_to_cpu(cell[index]); + debug("%#llx (%lld)\n", *outp, *outp); + + return 0; +} + u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index, u32 def) { |