[PATCH 1/4 v4] drivers: create a pin control subsystem

[Barry Song]

> +int foo_list(struct pinmux_dev *pmxdev, unsigned selector)

pinctrl_dev?

> +{
> +       if (selector >= ARRAY_SIZE(myfuncs))
> +               return -EINVAL;
> +       return 0;
> +}
> +
> +const char *foo_get_fname(struct pinmux_dev *pmxdev, unsigned selector)

pinctrl_dev?

> +{
> +       if (selector >= ARRAY_SIZE(myfuncs))
> +               return NULL;
> +       return myfuncs[selector].name;
> +}
> +
> +static int foo_get_pins(struct pinmux_dev *pmxdev, unsigned selector,
> +                       unsigned ** const pins, unsigned * const num_pins)

pinctrl_dev?

> +{
> +       if (selector >= ARRAY_SIZE(myfuncs))
> +               return -EINVAL;
> +       *pins = myfuncs[selector].pins;
> +       *num_pins = myfuncs[selector].num_pins;
> +       return 0;
> +}
> +
> +int foo_enable(struct pinmux_dev *pmxdev, unsigned selector)
> +{
> +       if (selector < ARRAY_SIZE(myfuncs))
> +               write((read(MUX)|(1<<selector)), MUX)
> +               return 0;
> +       }
> +       return -EINVAL;
> +}
> +
> +int foo_disable(struct pinmux_dev *pmxdev, unsigned selector)

pinctrl_dev?

-barry