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gpio: ich: Implement get_direction function

PATCH In review Aaron Sierra 2 participants 2 messages Mar 31, 2015 – Apr 8, 2015 1 message not in the archive

Subsystems (3)
GPIO Intel GPIO drivers Ich lpc and GPIO driver
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A message that is not in the archive (sent off-list or not yet received): [email protected]

Aaron Sierra

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PATCH 1/1 gpio: ich: Implement get_direction function

Allow the kernel to query the driver for a GPIO's pin direction.

Signed-off-by Aaron Sierra <[email protected]>
---
 drivers/gpio/gpio-ich.c | 6 ++++++
 1 file changed, 6 insertions(+)
drivers/gpio/gpio-ich.c +6 -0
index 7818cd1..4ba7ed5 100644
@@ -173,6 +173,11 @@ static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr)
 	return !!(ichx_priv.use_gpio & (1 << (nr / 32)));
 }
 
+static int ichx_gpio_get_direction(struct gpio_chip *gpio, unsigned nr)
+{
+	return ichx_read_bit(GPIO_IO_SEL, nr) ? GPIOF_DIR_IN : GPIOF_DIR_OUT;
+}
+
 static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
 {
 	/*

@@ -286,6 +291,7 @@ static void ichx_gpiolib_setup(struct gpio_chip *chip)
 		ichx_priv.desc->get : ichx_gpio_get;
 
 	chip->set = ichx_gpio_set;
+	chip->get_direction = ichx_gpio_get_direction;
 	chip->direction_input = ichx_gpio_direction_input;
 	chip->direction_output = ichx_gpio_direction_output;
 	chip->base = modparam_gpiobase;
Signature · 1 line
1.9.1