ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix
If "no_suspend_irq" is used on the sh7372 Mackerel board
with v3.2-rc1 then Suspend-to-RAM fails because the serial
console tries to write to the SCIF driver even though the
power domain is turned off.
This patch checks the state of "console_suspend_enabled"
to see if A3SP should be forced enabled.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index e261383..78c98a8 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/bitrev.h>
+#include <linux/console.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/tlbflush.h>
@@ -469,6 +470,11 @@
/* do not convert A3SM, A3SP, A3SG, A4R power down into A4S */
__raw_writel(0, PDNSEL);
+ /* serial consoles make use of SCIF hardware located in A3SP,
+ * keep such power domain on if "no_console_suspend" is set.
+ */
+ sh7372_a3sp.stay_on = !console_suspend_enabled;
+
sh7372_suspend_init();
sh7372_cpuidle_init();
}