On 12/24/2017 03:37 PM, Yoshihiro Kaneko wrote:
> From: Hien Dang <[email protected]>
>
> This patch adds an implementation that saves and restores the state of
> GPIO configuration on suspend and resume.
>
> Signed-off-by: Hien Dang <[email protected]>
> Signed-off-by: Takeshi Kihara <[email protected]>
> [Modify structure of the bank info to simplify a saving registers]
> Signed-off-by: Yoshihiro Kaneko <[email protected]>
> ---
[snip]
> +static SIMPLE_DEV_PM_OPS(gpio_rcar_pm_ops,
> + gpio_rcar_suspend, gpio_rcar_resume);
> +#define DEV_PM_OPS (&gpio_rcar_pm_ops)
> +#else
> +#define DEV_PM_OPS NULL
> +#endif /* CONFIG_PM_SLEEP*/
> +
> static int gpio_rcar_probe(struct platform_device *pdev)
> {
> struct gpio_rcar_priv *p;
> @@ -536,6 +604,7 @@ static int gpio_rcar_remove(struct platform_device *pdev)
> .remove = gpio_rcar_remove,
> .driver = {
> .name = "gpio_rcar",
> + .pm = DEV_PM_OPS,
> .of_match_table = of_match_ptr(gpio_rcar_of_table),
> }
> };
>
You can safely follow the next simpler pattern (add pm functions after
gpio_rcar_remove() function and remove DEV_PM_OPS macro):
#ifdef CONFIG_PM_SLEEP
static int gpio_rcar_suspend(struct device *dev)
{
...
}
static int gpio_rcar_resume(struct device *dev)
{
...
}
#endif
static SIMPLE_DEV_PM_OPS(gpio_rcar_pm_ops, gpio_rcar_suspend, gpio_rcar_resume);
static struct platform_driver gpio_rcar_device_driver = {
.probe = gpio_rcar_probe,
.remove = gpio_rcar_remove,
.driver = {
.name = "gpio_rcar",
.pm = &gpio_rcar_pm_ops,
.of_match_table = of_match_ptr(gpio_rcar_of_table),
}
};
--
With best wishes,
Vladimir
