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gpio: dwapb_gpio: Enable get_function support 

Enabled get_function support for dwapb where the function will
return the state of GPIO port.

Signed-off-by: Chin Liang See <chin.liang.see@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
This commit is contained in:
Ley Foon Tan 2018-08-16 13:46:30 +08:00 committed by Marek Vasut
parent ecb10a41c9
commit 71f2700b92
1 changed files with 14 additions and 0 deletions
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14
drivers/gpio/dwapb_gpio.c
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@ -78,11 +78,25 @@ static int dwapb_gpio_set_value(struct udevice *dev, unsigned pin, int val)
return 0;
}
static int dwapb_gpio_get_function(struct udevice *dev, unsigned offset)
{
struct gpio_dwapb_platdata *plat = dev_get_platdata(dev);
u32 gpio;
gpio = readl(plat->base + GPIO_SWPORT_DDR(plat->bank));
if (gpio & BIT(offset))
return GPIOF_OUTPUT;
else
return GPIOF_INPUT;
}
static const struct dm_gpio_ops gpio_dwapb_ops = {
.direction_input = dwapb_gpio_direction_input,
.direction_output = dwapb_gpio_direction_output,
.get_value = dwapb_gpio_get_value,
.set_value = dwapb_gpio_set_value,
.get_function = dwapb_gpio_get_function,
};
static int gpio_dwapb_probe(struct udevice *dev)