[U-Boot] [PATCH 1/9] exynos4:pinmux:fdt: decode peripheral id

[Jaehoon Chung]

Hi, Piotr.

On 01/27/2014 11:15 PM, Piotr Wilczek wrote:
> This patch adds api to decode peripheral id based in interrupt number.
> 
> Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> CC: Minkyu Kang <mk7.kang at samsung.com>
> ---
>  arch/arm/cpu/armv7/exynos/pinmux.c |   21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
> index 904177a..3201d53 100644
> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
> @@ -741,6 +741,25 @@ int exynos_pinmux_config(int peripheral, int flags)
>  }
>  
>  #ifdef CONFIG_OF_CONTROL
> +

Remove the white space.

> +static int exynos4_pinmux_decode_periph_id(const void *blob, int node)
> +{
> +	int err;
> +	u32 cell[3];
> +
> +	err = fdtdec_get_int_array(blob, node, "interrupts", cell,
> +					ARRAY_SIZE(cell));
> +	if (err)
> +		return PERIPH_ID_NONE;
> +
> +	/* check for invalid peripheral id */
> +	if ((PERIPH_ID_SDMMC4 > cell[1]) || (cell[1] < PERIPH_ID_UART0))

What's condition checking? i didn't understand this.
PERIPH_ID_SDMMC > cell[1] or PERIPH_ID_UART0 > cell[1] is valid?

Best Regards,
Jaehoon Chung

> +		return cell[1];
> +
> +	debug(" invalid peripheral id\n");
> +	return PERIPH_ID_NONE;
> +}
> +
>  static int exynos5_pinmux_decode_periph_id(const void *blob, int node)
>  {
>  	int err;
> @@ -763,6 +782,8 @@ int pinmux_decode_periph_id(const void *blob, int node)
>  {
>  	if (cpu_is_exynos5())
>  		return  exynos5_pinmux_decode_periph_id(blob, node);
> +	else if (cpu_is_exynos4())
> +		return  exynos4_pinmux_decode_periph_id(blob, node);
>  	else
>  		return PERIPH_ID_NONE;
>  }
>