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authorMark A. Greer <mgreer@mvista.com>2007-06-07 10:38:00 +1000
committerPaul Mackerras <paulus@samba.org>2007-06-25 17:02:09 +1000
commit542c98c06712fdbbbfe6b9e92a8d0023cf45102a (patch)
treef87ea85550270e0c8bb1dea1d32cabd0a061c1da /arch/powerpc/sysdev/mv64x60_dev.c
parente3855fa5540617877907ca61c36d28e18d0f2473 (diff)
[POWERPC] Call add_preferred_console when MPSC is console
When a Marvell MPSC (serial controller) port is the specified /chosen/stdout-path device, call 'add_preferred_console()' so the user doesn't have to specify a 'console=ttyMMx' cmdline argument. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Acked-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev/mv64x60_dev.c')
-rw-r--r--arch/powerpc/sysdev/mv64x60_dev.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c
index 4b0a9c88eeb3..b618fa60aef3 100644
--- a/arch/powerpc/sysdev/mv64x60_dev.c
+++ b/arch/powerpc/sysdev/mv64x60_dev.c
@@ -12,6 +12,7 @@
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/console.h>
#include <linux/mv643xx.h>
#include <linux/platform_device.h>
@@ -420,3 +421,30 @@ error:
return err;
}
arch_initcall(mv64x60_device_setup);
+
+static int __init mv64x60_add_mpsc_console(void)
+{
+ struct device_node *np = NULL;
+ const char *prop;
+
+ prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
+ if (prop == NULL)
+ goto not_mpsc;
+
+ np = of_find_node_by_path(prop);
+ if (!np)
+ goto not_mpsc;
+
+ if (!of_device_is_compatible(np, "marvell,mpsc"))
+ goto not_mpsc;
+
+ prop = of_get_property(np, "block-index", NULL);
+ if (!prop)
+ goto not_mpsc;
+
+ add_preferred_console("ttyMM", *(int *)prop, NULL);
+
+not_mpsc:
+ return 0;
+}
+console_initcall(mv64x60_add_mpsc_console);