diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/legacy_serial.c | 45 |
1 files changed, 17 insertions, 28 deletions
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c index 4bfff8863bcb..76b862bd1fe9 100644 --- a/arch/powerpc/kernel/legacy_serial.c +++ b/arch/powerpc/kernel/legacy_serial.c @@ -4,6 +4,7 @@ #include <linux/serial_core.h> #include <linux/console.h> #include <linux/pci.h> +#include <linux/of_device.h> #include <asm/io.h> #include <asm/mmu.h> #include <asm/prom.h> @@ -31,6 +32,15 @@ static struct legacy_serial_info { int irq_check_parent; phys_addr_t taddr; } legacy_serial_infos[MAX_LEGACY_SERIAL_PORTS]; + +static struct __initdata of_device_id parents[] = { + {.type = "soc",}, + {.type = "tsi-bridge",}, + {.type = "opb", .compatible = "ibm,opb",}, + {.compatible = "simple-bus",}, + {.compatible = "wrs,epld-localbus",}, +}; + static unsigned int legacy_serial_count; static int legacy_serial_console = -1; @@ -306,18 +316,20 @@ void __init find_legacy_serial_ports(void) DBG(" no linux,stdout-path !\n"); } - /* First fill our array with SOC ports */ + /* Iterate over all the 16550 ports, looking for known parents */ for_each_compatible_node(np, "serial", "ns16550") { - struct device_node *soc = of_get_parent(np); - if (soc && !strcmp(soc->type, "soc")) { + struct device_node *parent = of_get_parent(np); + if (!parent) + continue; + if (of_match_node(parents, parent) != NULL) { index = add_legacy_soc_port(np, np); if (index >= 0 && np == stdout) legacy_serial_console = index; } - of_node_put(soc); + of_node_put(parent); } - /* First fill our array with ISA ports */ + /* Next, fill our array with ISA ports */ for_each_node_by_type(np, "serial") { struct device_node *isa = of_get_parent(np); if (isa && !strcmp(isa->name, "isa")) { @@ -328,29 +340,6 @@ void __init find_legacy_serial_ports(void) of_node_put(isa); } - /* First fill our array with tsi-bridge ports */ - for_each_compatible_node(np, "serial", "ns16550") { - struct device_node *tsi = of_get_parent(np); - if (tsi && !strcmp(tsi->type, "tsi-bridge")) { - index = add_legacy_soc_port(np, np); - if (index >= 0 && np == stdout) - legacy_serial_console = index; - } - of_node_put(tsi); - } - - /* First fill our array with opb bus ports */ - for_each_compatible_node(np, "serial", "ns16550") { - struct device_node *opb = of_get_parent(np); - if (opb && (!strcmp(opb->type, "opb") || - of_device_is_compatible(opb, "ibm,opb"))) { - index = add_legacy_soc_port(np, np); - if (index >= 0 && np == stdout) - legacy_serial_console = index; - } - of_node_put(opb); - } - #ifdef CONFIG_PCI /* Next, try to locate PCI ports */ for (np = NULL; (np = of_find_all_nodes(np));) { |