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authorPaul Gortmaker <paul.gortmaker@windriver.com>2008-01-24 11:59:12 -0500
committerKumar Gala <galak@kernel.crashing.org>2008-01-28 08:30:45 -0600
commit1a7507c7da2df6856e085e0fbb0c9ea8c12ac4e2 (patch)
tree454012d6ab76dc5f9607f1080b0ad8a89aba19d1 /arch/powerpc/kernel
parentca956f0ea8baa6365b5e39d16373f430e12a030d (diff)
downloadop-kernel-dev-1a7507c7da2df6856e085e0fbb0c9ea8c12ac4e2.zip
op-kernel-dev-1a7507c7da2df6856e085e0fbb0c9ea8c12ac4e2.tar.gz
[POWERPC] Reduce code duplication in legacy_serial, add UART parent types
The legacy_serial was treating each UART parent in a separate code block. Rather than continue this trend for the new parent IDs, this condenses all (soc, tsi, opb, plus two more new types) into one of_device_id array. The new types are wrs,epld-localbus for the Wind River sbc8560, and a more generic "simple-bus" as requested by Scott Wood. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/legacy_serial.c45
1 files changed, 17 insertions, 28 deletions
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 4bfff88..76b862b 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));) {
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