From 195812e4b6a631e8eaad4046bf6890db4328ea1f Mon Sep 17 00:00:00 2001
From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Fri, 9 Nov 2012 11:34:20 +0530
Subject: gpio: tegra: read output value when gpio is set in direction_out

Read the output value when gpio is set for the output mode for
gpio_get_value(). Reading input value in direction out does not
give correct value.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index cfd9b72..5389be8 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -134,6 +134,11 @@ static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 
 static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
+	/* If gpio is in output mode then read from the out value */
+	if ((tegra_gpio_readl(GPIO_OE(offset)) >> GPIO_BIT(offset)) & 1)
+		return (tegra_gpio_readl(GPIO_OUT(offset)) >>
+				GPIO_BIT(offset)) & 0x1;
+
 	return (tegra_gpio_readl(GPIO_IN(offset)) >> GPIO_BIT(offset)) & 0x1;
 }
 
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