linux-toradex.git/drivers/thermal/step_wise.c, branch v3.11 Linux kernel for Apalis and Colibri modules Thermal: build thermal governors into thermal_sys module 2013-04-14T15:28:43+00:00 Zhang Rui rui.zhang@intel.com 2013-03-26T08:38:29+00:00 80a26a5c22b90a82b8696cb72c1d09d525ada53e The thermal governors are part of the thermal framework, rather than a seperate feature/module. Because the generic thermal layer can not work without thermal governors, and it must load the thermal governors during its initialization. Build them into one module in this patch. This also fix a problem that the generic thermal layer does not work when CONFIG_THERMAL=m and CONFIG_THERMAL_GOV_XXX=y. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com> Acked-by: Durgadoss R <durgadoss.r@intel.com> 
The thermal governors are part of the thermal framework,
rather than a seperate feature/module.
Because the generic thermal layer can not work without
thermal governors, and it must load the thermal governors
during its initialization.

Build them into one module in this patch.

This also fix a problem that the generic thermal layer does not
work when CONFIG_THERMAL=m and CONFIG_THERMAL_GOV_XXX=y.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
thermal: step_wise: set throttle target within thermal instance limits 2013-04-11T23:23:50+00:00 Andrew Bresticker abrestic@chromium.org 2013-04-09T21:59:47+00:00 e79fe642cc21ac922226b5ea9b7975bf329d4e7a When selecting a target cooling state in get_target_state(), make sure that the state is at least as high as the minimum when the temperature is rising and at least as low as the maximum when the temperature is falling. This is necessary because, in the THREAML_TREND_RAISING and THERMAL_TREND_DROPPING cases, the current state may only be incremented or decremented by one even if it is outside the bounds of the thermal instance. This might occur, for example, if the CPU is heating up and hits a thermal trip point for the first time when it's frequency is much higher than the range specified by the thermal instance corresponding to the trip point. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
When selecting a target cooling state in get_target_state(), make sure
that the state is at least as high as the minimum when the temperature
is rising and at least as low as the maximum when the temperature is
falling.  This is necessary because, in the THREAML_TREND_RAISING and
THERMAL_TREND_DROPPING cases, the current state may only be incremented
or decremented by one even if it is outside the bounds of the thermal
instance.  This might occur, for example, if the CPU is heating up
and hits a thermal trip point for the first time when it's frequency
is much higher than the range specified by the thermal instance
corresponding to the trip point.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
step_wise: Unify the code for both throttle and dethrottle 2013-01-04T07:22:37+00:00 Zhang Rui rui.zhang@intel.com 2012-11-22T07:45:02+00:00 b8bb6cb999858043489c1ddef08eed2127559169 Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Introduce THERMAL_TREND_RAISE/DROP_FULL support for step_wise governor 2013-01-04T07:22:37+00:00 Zhang Rui rui.zhang@intel.com 2012-11-19T08:10:20+00:00 3dbfff3dfe6714aeefb615c65bec0800dc5a4c51 step_wise governor should set the device cooling state to upper/lower limit directly when THERMAL_TREND_RAISE/DROP_FULL. Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
step_wise governor should set the device cooling state to
upper/lower limit directly when THERMAL_TREND_RAISE/DROP_FULL.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Thermal: Fix DEFAULT_THERMAL_GOVERNOR 2012-12-12T07:34:48+00:00 Zhang Rui rui.zhang@intel.com 2012-12-12T07:31:37+00:00 1f53ef17d3ed6c34868cc8e7aa7c1d351c2fdc95 Fix DEFAULT_THERMAL_GOVERNOR to be consistant with the default governor selected in kernel config file. Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
Fix DEFAULT_THERMAL_GOVERNOR to be consistant with the
default governor selected in kernel config file.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal: step_wise: Add missing static storage class specifiers 2012-11-05T06:00:10+00:00 Sachin Kamat sachin.kamat@linaro.org 2012-09-27T10:58:12+00:00 b88a497701f84a0edc6631a79d21087e049bbcb1 Fixes the following sparse warnings: drivers/thermal/step_wise.c:153:5: warning: symbol 'step_wise_throttle' was not declared. Should it be static? drivers/thermal/step_wise.c:172:25: warning: symbol 'thermal_gov_step_wise' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
Fixes the following sparse warnings:
drivers/thermal/step_wise.c:153:5: warning:
symbol 'step_wise_throttle' was not declared. Should it be static?
drivers/thermal/step_wise.c:172:25: warning:
symbol 'thermal_gov_step_wise' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Thermal: Introduce a step_wise thermal governor 2012-11-05T06:00:07+00:00 Durgadoss R durgadoss.r@intel.com 2012-09-21T06:36:04+00:00 e151a202a084f9f4310d1aa4398325c56ca95fda This patch adds a simple step_wise governor to the generic thermal layer. This algorithm throttles the cooling devices in a linear fashion. If the 'trend' is heating, it throttles by one step. And if the thermal trend is cooling it de-throttles by one step. This actually moves the throttling logic from thermal_sys.c and puts inside step_wise.c, without any change. Signed-off-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> 
This patch adds a simple step_wise governor to the
generic thermal layer. This algorithm throttles the
cooling devices in a linear fashion. If the 'trend'
is heating, it throttles by one step. And if the
thermal trend is cooling it de-throttles by one step.

This actually moves the throttling logic from thermal_sys.c
and puts inside step_wise.c, without any change.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>