Hi,
On Sun, Nov 11, 2018 at 10:45:38PM +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@xxxxxx>
>
> Similar to gpio-reset allow to specify active and inactive delays
> while keeping the 100ms defaults that were used previously all the time.
>
> The dt-properties are named the same as in gpio-reset but get an "-ms"
> suffix as properties should contain such a suffix specifying its unit.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxx>
> ---
Thanks, queued.
-- Sebastian
> .../devicetree/bindings/power/reset/gpio-poweroff.txt | 2 ++
> drivers/power/reset/gpio-poweroff.c | 10 ++++++++--
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt b/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt
> index 6d8980c18c34..3e56c1b34a4c 100644
> --- a/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt
> +++ b/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt
> @@ -27,6 +27,8 @@ Optional properties:
> it to an output when the power-off handler is called. If this optional
> property is not specified, the GPIO is initialized as an output in its
> inactive state.
> +- active-delay-ms: Delay (default 100) to wait after driving gpio active
> +- inactive-delay-ms: Delay (default 100) to wait after driving gpio inactive
> - timeout-ms: Time to wait before asserting a WARN_ON(1). If nothing is
> specified, 3000 ms is used.
>
> diff --git a/drivers/power/reset/gpio-poweroff.c b/drivers/power/reset/gpio-poweroff.c
> index 38206c39b3bf..52525b6c18db 100644
> --- a/drivers/power/reset/gpio-poweroff.c
> +++ b/drivers/power/reset/gpio-poweroff.c
> @@ -26,6 +26,8 @@
> */
> static struct gpio_desc *reset_gpio;
> static u32 timeout = DEFAULT_TIMEOUT_MS;
> +static u32 active_delay = 100;
> +static u32 inactive_delay = 100;
>
> static void gpio_poweroff_do_poweroff(void)
> {
> @@ -33,10 +35,11 @@ static void gpio_poweroff_do_poweroff(void)
>
> /* drive it active, also inactive->active edge */
> gpiod_direction_output(reset_gpio, 1);
> - mdelay(100);
> + mdelay(active_delay);
> +
> /* drive inactive, also active->inactive edge */
> gpiod_set_value_cansleep(reset_gpio, 0);
> - mdelay(100);
> + mdelay(inactive_delay);
>
> /* drive it active, also inactive->active edge */
> gpiod_set_value_cansleep(reset_gpio, 1);
> @@ -66,6 +69,9 @@ static int gpio_poweroff_probe(struct platform_device *pdev)
> else
> flags = GPIOD_OUT_LOW;
>
> + device_property_read_u32(&pdev->dev, "active-delay-ms", &active_delay);
> + device_property_read_u32(&pdev->dev, "inactive-delay-ms",
> + &inactive_delay);
> device_property_read_u32(&pdev->dev, "timeout-ms", &timeout);
>
> reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags);
> --
> 2.18.0
>
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