[PATCH] gpio: mxc_gpio: fix reading state of GPIO pins in output mode

[Tomas Paukrt]

The PSR register works correctly for GPIO pins in input mode,
but always returns 0 for GPIO pins in output mode.
The DR register works correctly in both modes.

Signed-off-by: Tomas Paukrt <tomaspaukrt at email.cz>
---
 drivers/gpio/mxc_gpio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index cac6b32..5cd7681 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -133,7 +133,7 @@ int gpio_get_value(unsigned gpio)
 
 	regs = (struct gpio_regs *)gpio_ports[port];
 
-	val = (readl(&regs->gpio_psr) >> gpio) & 0x01;
+	val = (readl(&regs->gpio_dr) >> gpio) & 0x01;
 
 	return val;
 }
@@ -210,7 +210,7 @@ static void mxc_gpio_bank_set_value(struct gpio_regs *regs, int offset,
 
 static int mxc_gpio_bank_get_value(struct gpio_regs *regs, int offset)
 {
-	return (readl(&regs->gpio_psr) >> offset) & 0x01;
+	return (readl(&regs->gpio_dr) >> offset) & 0x01;
 }
 
 /* set GPIO pin 'gpio' as an input */
-- 
2.7.4