Re: [PATCH v2 4/6] pinctrl: sh-pfc: Stop calling gpiochip_add_pin_range() on DT platforms

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Geert,

Thank you for the patch.

On Tuesday 04 August 2015 15:55:17 Geert Uytterhoeven wrote:
> On platforms where the PFC/GPIO controller is instantiated from DT, the
> mapping between GPIOs and pins is set up using the "gpio-ranges"
> property in DT.
> 
> Hence stop setting up the mapping from C code on DT platforms.
> This code is still used for SH or ARM-legacy platforms.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Acked-by: Linus Walleij <linus.walleij@linaro.org>

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
> v2:
>   - Add Acked-by,
>   - Add check for CONFIG_OF and pfc->dev->of_node.
> ---
>  drivers/pinctrl/sh-pfc/gpio.c | 37 ++++++++++++++++++++++---------------
>  1 file changed, 22 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
> index ba353735ecf2be9a..b380e3f17b121bbb 100644
> --- a/drivers/pinctrl/sh-pfc/gpio.c
> +++ b/drivers/pinctrl/sh-pfc/gpio.c
> @@ -379,22 +379,29 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
> 
>  	pfc->gpio = chip;
> 
> -	/* Register the GPIO to pin mappings. As pins with GPIO ports must come
> -	 * first in the ranges, skip the pins without GPIO ports by stopping at
> -	 * the first range that contains such a pin.
> -	 */
> -	for (i = 0; i < pfc->nr_ranges; ++i) {
> -		const struct sh_pfc_pin_range *range = &pfc->ranges[i];
> -
> -		if (range->start >= pfc->nr_gpio_pins)
> -			break;
> +	if (IS_ENABLED(CONFIG_OF) && pfc->dev->of_node)
> +		return 0;
> 
> -		ret = gpiochip_add_pin_range(&chip->gpio_chip,
> -					     dev_name(pfc->dev),
> -					     range->start, range->start,
> -					     range->end - range->start + 1);
> -		if (ret < 0)
> -			return ret;
> +	if (IS_ENABLED(CONFIG_SUPERH) ||
> +	    IS_ENABLED(CONFIG_ARCH_SHMOBILE_LEGACY)) {
> +		/*
> +		 * Register the GPIO to pin mappings. As pins with GPIO ports
> +		 * must come first in the ranges, skip the pins without GPIO
> +		 * ports by stopping at the first range that contains such a
> +		 * pin.
> +		 */
> +		for (i = 0; i < pfc->nr_ranges; ++i) {
> +			const struct sh_pfc_pin_range *range = &pfc->ranges[i];
> +
> +			if (range->start >= pfc->nr_gpio_pins)
> +				break;
> +
> +			ret = gpiochip_add_pin_range(&chip->gpio_chip,
> +				dev_name(pfc->dev), range->start, range->start,
> +				range->end - range->start + 1);
> +			if (ret < 0)
> +				return ret;
> +		}
>  	}
> 
>  	/* Register the function GPIOs chip. */

-- 
Regards,

Laurent Pinchart