diff options
Diffstat (limited to 'target/linux/mediatek/patches/0020-thermal-thermal-Add-support-for-hardware-tracked-tri.patch')
| -rw-r--r-- | target/linux/mediatek/patches/0020-thermal-thermal-Add-support-for-hardware-tracked-tri.patch | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/target/linux/mediatek/patches/0020-thermal-thermal-Add-support-for-hardware-tracked-tri.patch b/target/linux/mediatek/patches/0020-thermal-thermal-Add-support-for-hardware-tracked-tri.patch deleted file mode 100644 index ab305e73a9..0000000000 --- a/target/linux/mediatek/patches/0020-thermal-thermal-Add-support-for-hardware-tracked-tri.patch +++ /dev/null @@ -1,117 +0,0 @@ -From 346632bc00fe71c269709702fecb474bb22e933e Mon Sep 17 00:00:00 2001 -From: Sascha Hauer <s.hauer@pengutronix.de> -Date: Wed, 13 May 2015 10:52:39 +0200 -Subject: [PATCH 20/76] thermal: thermal: Add support for hardware-tracked - trip points - -This adds support for hardware-tracked trip points to the device tree -thermal sensor framework. - -The framework supports an arbitrary number of trip points. Whenever -the current temperature is updated, the trip points immediately -below and above the current temperature are found. A .set_trips -callback is then called with the temperatures. If there is no trip -point above or below the current temperature, the passed trip -temperature will be -INT_MAX or INT_MAX respectively. In this callback, -the driver should program the hardware such that it is notified -when either of these trip points are triggered. When a trip point -is triggered, the driver should call `thermal_zone_device_update' -for the respective thermal zone. This will cause the trip points -to be updated again. - -If .set_trips is not implemented, the framework behaves as before. - -This patch is based on an earlier version from Mikko Perttunen -<mikko.perttunen@kapsi.fi> - -Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> ---- - drivers/thermal/thermal_core.c | 43 ++++++++++++++++++++++++++++++++++++++++ - include/linux/thermal.h | 3 +++ - 2 files changed, 46 insertions(+) - ---- a/drivers/thermal/thermal_core.c -+++ b/drivers/thermal/thermal_core.c -@@ -456,6 +456,45 @@ int thermal_zone_get_temp(struct thermal - } - EXPORT_SYMBOL_GPL(thermal_zone_get_temp); - -+static void thermal_zone_set_trips(struct thermal_zone_device *tz) -+{ -+ int low = -INT_MAX; -+ int high = INT_MAX; -+ int trip_temp, hysteresis; -+ int temp = tz->temperature; -+ int i; -+ -+ if (!tz->ops->set_trips) -+ return; -+ -+ /* No need to change trip points */ -+ if (temp > tz->prev_low_trip && temp < tz->prev_high_trip) -+ return; -+ -+ for (i = 0; i < tz->trips; i++) { -+ int trip_low; -+ -+ tz->ops->get_trip_temp(tz, i, &trip_temp); -+ tz->ops->get_trip_hyst(tz, i, &hysteresis); -+ -+ trip_low = trip_temp - hysteresis; -+ -+ if (trip_low < temp && trip_low > low) -+ low = trip_low; -+ -+ if (trip_temp > temp && trip_temp < high) -+ high = trip_temp; -+ } -+ -+ tz->prev_low_trip = low; -+ tz->prev_high_trip = high; -+ -+ dev_dbg(&tz->device, "new temperature boundaries: %d < x < %d\n", -+ low, high); -+ -+ tz->ops->set_trips(tz, low, high); -+} -+ - void thermal_zone_device_update(struct thermal_zone_device *tz) - { - int temp, ret, count; -@@ -489,6 +528,8 @@ void thermal_zone_device_update(struct t - dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n", - tz->last_temperature, tz->temperature); - -+ thermal_zone_set_trips(tz); -+ - for (count = 0; count < tz->trips; count++) - handle_thermal_trip(tz, count); - } -@@ -1522,6 +1563,8 @@ struct thermal_zone_device *thermal_zone - tz->trips = trips; - tz->passive_delay = passive_delay; - tz->polling_delay = polling_delay; -+ tz->prev_low_trip = INT_MAX; -+ tz->prev_high_trip = -INT_MAX; - /* A new thermal zone needs to be updated anyway. */ - atomic_set(&tz->need_update, 1); - ---- a/include/linux/thermal.h -+++ b/include/linux/thermal.h -@@ -90,6 +90,7 @@ struct thermal_zone_device_ops { - int (*unbind) (struct thermal_zone_device *, - struct thermal_cooling_device *); - int (*get_temp) (struct thermal_zone_device *, int *); -+ int (*set_trips) (struct thermal_zone_device *, int, int); - int (*get_mode) (struct thermal_zone_device *, - enum thermal_device_mode *); - int (*set_mode) (struct thermal_zone_device *, -@@ -184,6 +185,8 @@ struct thermal_zone_device { - int last_temperature; - int emul_temperature; - int passive; -+ int prev_low_trip; -+ int prev_high_trip; - unsigned int forced_passive; - atomic_t need_update; - const struct thermal_zone_device_ops *ops; |