[PATCH 5/5] ARM: tegra: cpuidle: use firmware call for power down

From: Alexandre Courbot
Date: Tue Jan 21 2014 - 05:10:54 EST

Invoke the do_idle() firmware call before suspending a CPU so that the
underlying firmware (if any) can take necessary action.

Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
arch/arm/mach-tegra/cpuidle-tegra114.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c
index e0b87300243d..c42fd41065d2 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra114.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra114.c
@@ -19,6 +19,7 @@
#include <linux/cpuidle.h>
#include <linux/cpu_pm.h>
#include <linux/clockchips.h>
+#include <asm/firmware.h>

#include <asm/cpuidle.h>
#include <asm/suspend.h>
@@ -45,6 +46,8 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev,

clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);

+ call_firmware_op(do_idle);
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);

clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);

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