diff options
| author | Rong Dian <b38775@freescale.com> | 2012-08-20 20:23:00 +0800 |
|---|---|---|
| committer | Rong Dian <b38775@freescale.com> | 2012-08-21 14:46:17 +0800 |
| commit | 1d80bd0d43df0561cf64d062a501aabe8a9cd44f (patch) | |
| tree | 30f34599e1c3e6ad01f660d9e3c3e089fdd8e68f /drivers/thermal/thermal_sys.c | |
| parent | 30b0b3d67d251ebaf916b2463cc8eda479ef5758 (diff) | |
ENGR00220794 imx6 thermal: add suspend and resume for thermal_sys class
1.Avoiding system wrong reboot caused by error temperature without
cancel_delayed_work before entering into suspend,so to cancel
thermal_zone_device temperature polling temperature delayed_work
before entering into suspend, reenable polling temperature delayed_work
after entering into resume.
2.In anatop_thermal_suspend, turn off alarm firstly
Signed-off-by: Rong Dian <b38775@freescale.com>
Diffstat (limited to 'drivers/thermal/thermal_sys.c')
| -rw-r--r-- | drivers/thermal/thermal_sys.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 04506f67ea45..745db5e9a33d 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -842,10 +842,33 @@ static void thermal_release(struct device *dev) kfree(cdev); } } +static int thermal_suspend(struct device *dev, pm_message_t state) +{ + struct thermal_zone_device *tz; + if (!strncmp(dev_name(dev), "thermal_zone", strlen("thermal_zone"))) { + tz = to_thermal_zone(dev); + thermal_zone_device_set_polling(tz, 0); + } + return 0; +} +static int themal_resume(struct device *dev) +{ + struct thermal_zone_device *tz; + if (!strncmp(dev_name(dev), "thermal_zone", strlen("thermal_zone"))) { + tz = to_thermal_zone(dev); + if (tz->passive) + thermal_zone_device_set_polling(tz, tz->passive_delay); + else if (tz->polling_delay) + thermal_zone_device_set_polling(tz, tz->polling_delay); + } + return 0; +} static struct class thermal_class = { .name = "thermal", .dev_release = thermal_release, + .suspend = thermal_suspend, + .resume = themal_resume, }; /** |