thermal: thermal_core: allow binding with limits on bind_params

When registering a thermal zone device using platform information
via bind_params, the thermal framework will always perform the
cdev binding using the lowest and highest limits (THERMAL_NO_LIMIT).

This patch changes the data structures so that it is possible
to inform what are the desired limits for each trip point
inside a bind_param. The way the binding is performed is also
changed so that it uses the new data structure.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index b4a975f..b268d3c 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -207,6 +207,16 @@ struct thermal_bind_params {
 	 * See Documentation/thermal/sysfs-api.txt for more information.
 	 */
 	int trip_mask;
+
+	/*
+	 * This is an array of cooling state limits. Must have exactly
+	 * 2 * thermal_zone.number_of_trip_points. It is an array consisting
+	 * of tuples <lower-state upper-state> of state limits. Each trip
+	 * will be associated with one state limit tuple when binding.
+	 * A NULL pointer means <THERMAL_NO_LIMITS THERMAL_NO_LIMITS>
+	 * on all trips.
+	 */
+	unsigned long *binding_limits;
 	int (*match) (struct thermal_zone_device *tz,
 			struct thermal_cooling_device *cdev);
 };