From 2b32d2a33a1b15f8bff096deff51e222c9fa171b Mon Sep 17 00:00:00 2001
From: Greg Meiste <w30289@motorola.com>
Date: Wed, 8 Sep 2010 13:38:36 -0500
Subject: [PATCH] [ARM] tegra: Setup regulators for suspend

The regulator framework may need to change certain regulators when
entering suspend.

Change-Id: I584e92b3c32cbd1a63325831822e2704a3dd2774
Signed-off-by: Greg Meiste <w30289@motorola.com>
---
 arch/arm/mach-tegra/suspend.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/mach-tegra/suspend.c b/arch/arm/mach-tegra/suspend.c
index aef50319852c..34b0e7e8fe7b 100644
--- a/arch/arm/mach-tegra/suspend.c
+++ b/arch/arm/mach-tegra/suspend.c
@@ -37,6 +37,8 @@
 #include <linux/seq_file.h>
 #include <linux/uaccess.h>
 
+#include <linux/regulator/machine.h>
+
 #include <asm/cacheflush.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
@@ -476,6 +478,11 @@ static void tegra_suspend_dram(bool do_lp0)
 	wmb();
 }
 
+static int tegra_suspend_begin(suspend_state_t state)
+{
+	return regulator_suspend_prepare(state);
+}
+
 static int tegra_suspend_prepare_late(void)
 {
 	disable_irq(INT_SYS_STATS_MON);
@@ -645,6 +652,7 @@ static int tegra_suspend_enter(suspend_state_t state)
 
 static struct platform_suspend_ops tegra_suspend_ops = {
 	.valid		= suspend_valid_only_mem,
+	.begin		= tegra_suspend_begin,
 	.prepare_late	= tegra_suspend_prepare_late,
 	.wake		= tegra_suspend_wake,
 	.enter		= tegra_suspend_enter,
-- 
2.34.1