diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-12-01 18:09:33 +0200 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2016-12-07 15:23:40 +0100 |
| commit | 46a5c112a401163f5112911166ea78eb4bacdbc2 (patch) | |
| tree | 00328c951b17fe45220b8da76344cbfa8cdbcefb /drivers/gpio | |
| parent | gpio: merrifield: Add support for hardware debouncer (diff) | |
| download | linux-dev-46a5c112a401163f5112911166ea78eb4bacdbc2.tar.xz linux-dev-46a5c112a401163f5112911166ea78eb4bacdbc2.zip | |
gpio: merrifield: Implement gpio_get_direction callback
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>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-merrifield.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c index d7cbbc0fc47b..69e0f4ace465 100644 --- a/drivers/gpio/gpio-merrifield.c +++ b/drivers/gpio/gpio-merrifield.c @@ -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; |