sh: arch earlytimer support

Extend the 32-bit SuperH timer code to register and probe
the earlytimer class of Early Platform Drivers.

This registers the sh_cmt driver if compiled-in.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/kernel/time_32.c b/arch/sh/kernel/time_32.c
index c34e1e0..04b8c6a 100644 (file)
--- a/arch/sh/kernel/time_32.c
+++ b/arch/sh/kernel/time_32.c
@@ -17,6 +17,7 @@
 #include <linux/sched.h>
 #include <linux/clockchips.h>
 #include <linux/mc146818rtc.h> /* for rtc_lock */
+#include <linux/platform_device.h>
 #include <linux/smp.h>
 #include <asm/clock.h>
 #include <asm/rtc.h>
@@ -228,6 +229,14 @@ void __init time_init(void)
        local_timer_setup(smp_processor_id());
 #endif
 
+       /*
+        * Make sure all compiled-in early timers register themselves.
+        * Run probe() for one "earlytimer" device.
+        */
+       early_platform_driver_register_all("earlytimer");
+       if (early_platform_driver_probe("earlytimer", 1, 0))
+               return;
+
        /*
         * Find the timer to use as the system timer, it will be
         * initialized for us.