diff options
Diffstat (limited to 'drivers/core/ofnode.c')
| -rw-r--r-- | drivers/core/ofnode.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 3cf3205a2f..29375397e0 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -55,6 +55,38 @@ int ofnode_read_s32_default(ofnode node, const char *propname, s32 def) return def; } +int ofnode_read_u64(ofnode node, const char *propname, u64 *outp) +{ + const fdt64_t *cell; + int len; + + assert(ofnode_valid(node)); + debug("%s: %s: ", __func__, propname); + + if (ofnode_is_np(node)) + return of_read_u64(ofnode_to_np(node), propname, outp); + + cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname, + &len); + if (!cell || len < sizeof(*cell)) { + debug("(not found)\n"); + return -EINVAL; + } + *outp = fdt64_to_cpu(cell[0]); + debug("%#llx (%lld)\n", (unsigned long long)*outp, + (unsigned long long)*outp); + + return 0; +} + +int ofnode_read_u64_default(ofnode node, const char *propname, u64 def) +{ + assert(ofnode_valid(node)); + ofnode_read_u64(node, propname, &def); + + return def; +} + bool ofnode_read_bool(ofnode node, const char *propname) { const void *prop; @@ -697,3 +729,15 @@ int ofnode_device_is_compatible(ofnode node, const char *compat) ofnode_to_offset(node), compat); } + +ofnode ofnode_by_compatible(ofnode from, const char *compat) +{ + if (of_live_active()) { + return np_to_ofnode(of_find_compatible_node( + (struct device_node *)ofnode_to_np(from), NULL, + compat)); + } else { + return offset_to_ofnode(fdt_node_offset_by_compatible( + gd->fdt_blob, ofnode_to_offset(from), compat)); + } +} |