diff options
| author | Nishanth Menon <nm@ti.com> | 2014-12-04 10:58:56 -0600 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2014-12-04 11:04:14 -0800 |
| commit | b95579cd8795442e75c8846fa6eeb4fb442e9d83 (patch) | |
| tree | dc421532956f1f10aa421de25956e0f606d9f154 | |
| parent | 52a95c1185220feb514c8e167bd6033c0da6f576 (diff) | |
| download | op-kernel-dev-b95579cd8795442e75c8846fa6eeb4fb442e9d83.zip op-kernel-dev-b95579cd8795442e75c8846fa6eeb4fb442e9d83.tar.gz | |
hwmon: (gpio-fan) Add a shutdown handler to poweroff the fans
Poweroff the fans when shutting down the system. Else,
echo '1' > /sys/class/hwmon/hwmon0/fan1_target; poweroff leaves the
fan running if the System power off does not drive the gpio expander
which might control the fan power supply.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| -rw-r--r-- | drivers/hwmon/gpio-fan.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c index 7802eb2..36abf81 100644 --- a/drivers/hwmon/gpio-fan.c +++ b/drivers/hwmon/gpio-fan.c @@ -550,6 +550,14 @@ static int gpio_fan_probe(struct platform_device *pdev) return 0; } +static void gpio_fan_shutdown(struct platform_device *pdev) +{ + struct gpio_fan_data *fan_data = dev_get_drvdata(&pdev->dev); + + if (fan_data->ctrl) + set_fan_speed(fan_data, 0); +} + #ifdef CONFIG_PM_SLEEP static int gpio_fan_suspend(struct device *dev) { @@ -581,6 +589,7 @@ static SIMPLE_DEV_PM_OPS(gpio_fan_pm, gpio_fan_suspend, gpio_fan_resume); static struct platform_driver gpio_fan_driver = { .probe = gpio_fan_probe, + .shutdown = gpio_fan_shutdown, .driver = { .name = "gpio-fan", .pm = GPIO_FAN_PM, |
