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authorMoritz Fischer <mdf@kernel.org>2018-02-23 02:17:14 +0300
committerSebastian Reichel <sre@kernel.org>2018-03-09 19:15:03 +0300
commitd85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f (patch)
treef2b14e49154afa7e33ed2ab8aacacefc456fc89c /drivers
parent88f598725f42c8ad8c6c01c82bd3d667c250e1de (diff)
downloadlinux-d85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f.tar.xz
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 <mdf@kernel.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/reset/gpio-poweroff.c8
1 files changed, 6 insertions, 2 deletions
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 <linux/of_platform.h>
#include <linux/module.h>
+#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);