From d85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f Mon Sep 17 00:00:00 2001 From: Moritz Fischer Date: Thu, 22 Feb 2018 15:17:14 -0800 Subject: power: reset: gpio-poweroff: Support for timeout from device property Add support for reading a timeout value from device property. Fall back to previous default of 3s if nothing is specified. Signed-off-by: Moritz Fischer Signed-off-by: Sebastian Reichel --- drivers/power/reset/gpio-poweroff.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/power/reset/gpio-poweroff.c') diff --git a/drivers/power/reset/gpio-poweroff.c b/drivers/power/reset/gpio-poweroff.c index be3d81ff51cc..6273ad3b411d 100644 --- a/drivers/power/reset/gpio-poweroff.c +++ b/drivers/power/reset/gpio-poweroff.c @@ -19,11 +19,13 @@ #include #include +#define DEFAULT_TIMEOUT_MS 3000 /* * Hold configuration here, cannot be more than one instance of the driver * since pm_power_off itself is global. */ static struct gpio_desc *reset_gpio; +static u32 timeout = DEFAULT_TIMEOUT_MS; static void gpio_poweroff_do_poweroff(void) { @@ -40,7 +42,7 @@ static void gpio_poweroff_do_poweroff(void) gpiod_set_value(reset_gpio, 1); /* give it some time */ - mdelay(3000); + mdelay(timeout); WARN_ON(1); } @@ -58,12 +60,14 @@ static int gpio_poweroff_probe(struct platform_device *pdev) return -EBUSY; } - input = of_property_read_bool(pdev->dev.of_node, "input"); + input = device_property_read_bool(&pdev->dev, "input"); if (input) flags = GPIOD_IN; else flags = GPIOD_OUT_LOW; + device_property_read_u32(&pdev->dev, "timeout-ms", &timeout); + reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags); if (IS_ERR(reset_gpio)) return PTR_ERR(reset_gpio); -- cgit v1.2.3