diff options
| -rw-r--r-- | drivers/core/ofnode.c | 36 | ||||
| -rw-r--r-- | include/dm/ofnode.h | 13 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 29375397e0..0cfb0fbabb 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -623,6 +623,42 @@ fail: return ret; } +int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device) +{ + const char *list, *end; + int len; + + list = ofnode_get_property(node, "compatible", &len); + if (!list) + return -ENOENT; + + end = list + len; + while (list < end) { + len = strlen(list); + if (len >= strlen("pciVVVV,DDDD")) { + char *s = strstr(list, "pci"); + + /* + * check if the string is something like pciVVVV,DDDD.RR + * or just pciVVVV,DDDD + */ + if (s && s[7] == ',' && + (s[12] == '.' || s[12] == 0)) { + s += 3; + *vendor = simple_strtol(s, NULL, 16); + + s += 5; + *device = simple_strtol(s, NULL, 16); + + return 0; + } + } + list += (len + 1); + } + + return -ENOENT; +} + int ofnode_read_addr_cells(ofnode node) { if (ofnode_is_np(node)) diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index cd08a7e4d0..ab36b74c4c 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -586,6 +586,19 @@ int ofnode_read_pci_addr(ofnode node, enum fdt_pci_space type, const char *propname, struct fdt_pci_addr *addr); /** + * ofnode_read_pci_vendev() - look up PCI vendor and device id + * + * Look at the compatible property of a device node that represents a PCI + * device and extract pci vendor id and device id from it. + * + * @param node node to examine + * @param vendor vendor id of the pci device + * @param device device id of the pci device + * @return 0 if ok, negative on error + */ +int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device); + +/** * ofnode_read_addr_cells() - Get the number of address cells for a node * * This walks back up the tree to find the closest #address-cells property |