[PATCH v11 7/7] thermal:exynos:boost: Automatic enable/disable of BOOST feature (at Exynos4412)

Lukasz Majewski
2013-12-13T16:38:37Z

This patch provides auto disable/enable operation for boost. It uses already
present thermal infrastructure to provide boost hysteresis.
The TMU data has been modified to work properly with or without boost.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>

---
Changes for v11:
- Use only one thermal data set
- Adjust Exynos4412 thermal data to work with or without BOOST

Changes for v10:
- Remove boost related code from thermal_core.c
- Use already present thermal infrastructure to provide thermal hysteresis
- Introduce special set of TMU data for BOOST

Changes for v9:
- None

Changes for v8:
- Move cpufreq_boost_* stub functions definition (needed when cpufreq
is not compiled in) to cpufreq.h at cpufreq core support commit

Changes for v7:
- None

Changes for v6:
- Disable boost only when supported and enabled
- Protect boost related thermal_zone_device struct fields with mutex
- Evaluate temperature trend during boost enable decision
- Create separate methods to handle boost enable/disable
(thermal_boost_{enable|disable}) operations
- Boost is disabled at any trip point passage (not only the non critical one)
- Add stub definitions for cpufreq boost functions used when
CONFIG_CPU_FREQ is NOT defined.

Changes for v5:
- Move boost disable code from cpu_cooling.c to thermal_core.c
(to handle_non_critical_trips)
- Extent struct thermal_zone_device by adding overheated bool flag
- Implement auto enable of boost after device cools down
- Introduce boost_polling flag, which indicates if thermal uses it's predefined
pool delay or has woken up thermal workqueue only to wait until device
cools down.

Changes for v4:
- New patch

drivers/thermal/samsung/exynos_tmu_data.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
index 073c292..476b768 100644
--- a/drivers/thermal/samsung/exynos_tmu_data.c
+++ b/drivers/thermal/samsung/exynos_tmu_data.c
@@ -131,8 +131,8 @@ static const struct exynos_tmu_registers exynos4412_tmu_registers = {

#define EXYNOS4412_TMU_DATA \
.threshold_falling = 10, \
- .trigger_levels[0] = 85, \
- .trigger_levels[1] = 103, \
+ .trigger_levels[0] = 70, \
+ .trigger_levels[1] = 95, \
.trigger_levels[2] = 110, \
.trigger_levels[3] = 120, \
.trigger_enable[0] = true, \
@@ -155,12 +155,12 @@ static const struct exynos_tmu_registers exynos4412_tmu_registers = {
.second_point_trim = 85, \
.default_temp_offset = 50, \
.freq_tab[0] = { \
- .freq_clip_max = 800 * 1000, \
- .temp_level = 85, \
+ .freq_clip_max = 1400 * 1000, \
+ .temp_level = 70, \
}, \
.freq_tab[1] = { \
- .freq_clip_max = 200 * 1000, \
- .temp_level = 103, \
+ .freq_clip_max = 400 * 1000, \
+ .temp_level = 95, \
}, \
.freq_tab_count = 2, \
.registers = &exynos4412_tmu_registers, \
--
1.7.10.4