Re: [PATCH v3 2/4] pinctrl: pinctrl-imx: add imx pinctrl core driver

From: Shawn Guo
Date: Fri Apr 27 2012 - 04:54:14 EST


On Thu, Apr 26, 2012 at 10:40:25PM +0800, Dong Aisheng wrote:
> +/**
> + * struct imx_pin_reg - describe a pin reg map
> + * The last 3 members are used for select input setting
> + * @pid: pin id
> + * @mux_reg: mux register offset
> + * @conf_reg: config register offset
> + * @mux_mode: mux mode
> + * @input_reg: select input register offset for this mux if any
> + * 0 if no select input setting needed.
> + * @input_val: the value set to select input register
> + */
> +struct imx_pin_reg {
> + unsigned int pid;
> + unsigned int mux_reg;
> + unsigned int conf_reg;
> + unsigned int mux_mode;
> + unsigned int input_reg;
> + unsigned int input_val;
> +};

Since the array of this struct is big, I would suggest define the type
of the members as size-efficient as possible, for example, u16 is enough
for pid, and reg offset, while u8 is enough for mux_mode?

--
Regards,
Shawn
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