linux-kernel - [PATCH v2 25/28] ARM: tegra: suspend: Save protected aperture across LP0

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Date:	Sun, 23 Jan 2011 18:01:30 -0800
From:	Colin Cross <ccross@...roid.com>
To:	linux-tegra@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org, olof@...om.net,
	konkers@...roid.com, Colin Cross <ccross@...roid.com>,
	Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 25/28] ARM: tegra: suspend: Save protected aperture across LP0

Signed-off-by: Colin Cross <ccross@...roid.com>
---
 arch/arm/mach-tegra/suspend.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-tegra/suspend.c b/arch/arm/mach-tegra/suspend.c
index ded2c36..be8c78f 100644
--- a/arch/arm/mach-tegra/suspend.c
+++ b/arch/arm/mach-tegra/suspend.c
@@ -497,12 +497,13 @@ static void tegra_debug_uart_resume(void)
 
 #define MC_SECURITY_START	0x6c
 #define MC_SECURITY_SIZE	0x70
+#define MC_SECURITY_CFG2	0x7c
 
 static int tegra_suspend_enter(suspend_state_t state)
 {
 	void __iomem *mc = IO_ADDRESS(TEGRA_MC_BASE);
 	unsigned long flags;
-	u32 mc_data[2];
+	u32 mc_data[3] = {0, 0, 0};
 	bool do_lp0 = (current_suspend_mode == TEGRA_SUSPEND_LP0);
 	bool do_lp2 = (current_suspend_mode == TEGRA_SUSPEND_LP2);
 	int lp_state;
@@ -533,6 +534,7 @@ static int tegra_suspend_enter(suspend_state_t state)
 
 		mc_data[0] = readl(mc + MC_SECURITY_START);
 		mc_data[1] = readl(mc + MC_SECURITY_SIZE);
+		mc_data[2] = readl(mc + MC_SECURITY_CFG2);
 	}
 
 	rtc_before = tegra_rtc_read_ms();
@@ -550,6 +552,7 @@ static int tegra_suspend_enter(suspend_state_t state)
 	if (do_lp0) {
 		writel(mc_data[0], mc + MC_SECURITY_START);
 		writel(mc_data[1], mc + MC_SECURITY_SIZE);
+		writel(mc_data[2], mc + MC_SECURITY_CFG2);
 
 		tegra_clk_resume();
 		tegra_gpio_resume();
-- 
1.7.3.1

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