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[POWERPC] Call add_preferred_console when MPSC is console

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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>
This commit is contained in:
Mark A. Greer
2007-06-07 10:38:00 +10:00
committed by Paul Mackerras
parent e3855fa554
commit 542c98c067
1 changed files with 28 additions and 0 deletions
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28
arch/powerpc/sysdev/mv64x60_dev.c
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@@ -12,6 +12,7 @@
#include <linux/stddef.h> #include <linux/stddef.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/console.h>
#include <linux/mv643xx.h> #include <linux/mv643xx.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
@@ -420,3 +421,30 @@ error:
return err; return err;
} }
arch_initcall(mv64x60_device_setup); 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);