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gpio: merrifield: Implement gpio_get_direction callback

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Implement gpio_get_direction() callback for Intel Merrifield GPIO.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2016-12-01 18:09:33 +02:00 committed by Linus Walleij
parent e7a718f9b1
commit 46a5c112a4
1 changed files with 9 additions and 0 deletions
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9
drivers/gpio/gpio-merrifield.c
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@ -11,6 +11,7 @@
#include <linux/bitops.h>
#include <linux/gpio/driver.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
@ -161,6 +162,13 @@ static int mrfld_gpio_direction_output(struct gpio_chip *chip,
return 0;
}
static int mrfld_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
{
void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
return (readl(gpdr) & BIT(offset % 32)) ? GPIOF_DIR_OUT : GPIOF_DIR_IN;
}
static int mrfld_gpio_set_debounce(struct gpio_chip *chip, unsigned int offset,
unsigned int debounce)
{
@ -405,6 +413,7 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id
priv->chip.direction_output = mrfld_gpio_direction_output;
priv->chip.get = mrfld_gpio_get;
priv->chip.set = mrfld_gpio_set;
priv->chip.get_direction = mrfld_gpio_get_direction;
priv->chip.set_debounce = mrfld_gpio_set_debounce;
priv->chip.base = gpio_base;
priv->chip.ngpio = MRFLD_NGPIO;