Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

[linux-drm-fsl-dcu.git] / include / linux / thermal.h

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 613c29bd6baf4763e57530b794df843d9cea61ee..e13a1ace50e902ad0ae38a81f5563d67eaa4a00f 100644 (file)
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -43,6 +43,9 @@
 /* Default weight of a bound cooling device */
 #define THERMAL_WEIGHT_DEFAULT 0
 
+/* use value, which < 0K, to indicate an invalid/uninitialized temperature */
+#define THERMAL_TEMP_INVALID   -274000
+
 /* Unit conversion macros */
 #define DECI_KELVIN_TO_CELSIUS(t)      ({                      \
        long _t = (t);                                          \
@@ -167,6 +170,7 @@ struct thermal_attr {
  * @forced_passive:    If > 0, temperature at which to switch on all ACPI
  *                     processor cooling devices.  Currently only used by the
  *                     step-wise governor.
+ * @need_update:       if equals 1, thermal_zone_device_update needs to be invoked.
  * @ops:       operations this &thermal_zone_device supports
  * @tzp:       thermal zone parameters
  * @governor:  pointer to the governor for this thermal zone
@@ -194,6 +198,7 @@ struct thermal_zone_device {
        int emul_temperature;
        int passive;
        unsigned int forced_passive;
+       atomic_t need_update;
        struct thermal_zone_device_ops *ops;
        struct thermal_zone_params *tzp;
        struct thermal_governor *governor;