[U-Boot] [PATCH] gpio: dwapb_gpio: Enable get_function support

[Marek Vasut]

On 08/15/2018 08:05 PM, Ley Foon Tan wrote:
> 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 at intel.com>
> Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
> ---
>  drivers/gpio/dwapb_gpio.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/drivers/gpio/dwapb_gpio.c b/drivers/gpio/dwapb_gpio.c
> index 680b11a..3b5c181 100644
> --- a/drivers/gpio/dwapb_gpio.c
> +++ b/drivers/gpio/dwapb_gpio.c
> @@ -78,11 +78,26 @@ 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);
> +	int gpio;
> +
> +	gpio = readl(plat->base + GPIO_SWPORT_DDR(plat->bank));
> +	gpio = (gpio >> offset) & 1;
> +
> +	if (gpio)

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)
> 


-- 
Best regards,
Marek Vasut