diff options
| author |   Moritz Fischer <mdf@kernel.org> | 2018-02-22 15:17:14 -0800 |
|---|---|---|
| committer |   Sebastian Reichel <sre@kernel.org> | 2018-03-09 17:15:03 +0100 |
| commit | d85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f (patch) | |
| tree | f2b14e49154afa7e33ed2ab8aacacefc456fc89c /drivers/power | |
| parent | dt-bindings: power: reset: gpio-poweroff: Add 'timeout-ms' property (diff) | |
| download | linux-dev-d85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f.tar.xz linux-dev-d85b4f7b7fae40aabacc3fe11ded95b4a2bbc49f.zip | |
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/power')
| -rw-r--r-- | drivers/power/reset/gpio-poweroff.c | 8 |
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); |