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Subject[PATCH v10 7/7] thermal:exynos:boost: Automatic enable/disable of BOOST feature (at Exynos4412)
Date
This patch provides auto disable/enable operation for boost. It uses already
present thermal infrastructure to provide boost hysteresis.
A special set of TMU data has been defined for Exynos4412, which is only
considered when BOOST is enabled.

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

---
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 | 47 +++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)

diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
index 073c292..9346926 100644
--- a/drivers/thermal/samsung/exynos_tmu_data.c
+++ b/drivers/thermal/samsung/exynos_tmu_data.c
@@ -167,13 +167,60 @@ static const struct exynos_tmu_registers exynos4412_tmu_registers = {
.features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_TRIM_RELOAD | \
TMU_SUPPORT_FALLING_TRIP | TMU_SUPPORT_READY_STATUS | \
TMU_SUPPORT_EMUL_TIME)
+
+#define EXYNOS4412_TMU_DATA_BOOST \
+ .threshold_falling = 10, \
+ .trigger_levels[0] = 70, \
+ .trigger_levels[1] = 85, \
+ .trigger_levels[2] = 103, \
+ .trigger_levels[3] = 110, \
+ .trigger_enable[0] = true, \
+ .trigger_enable[1] = true, \
+ .trigger_enable[2] = true, \
+ .trigger_enable[3] = true, \
+ .trigger_type[0] = THROTTLE_ACTIVE, \
+ .trigger_type[1] = THROTTLE_ACTIVE, \
+ .trigger_type[2] = THROTTLE_ACTIVE, \
+ .trigger_type[3] = SW_TRIP, \
+ .max_trigger_level = 4, \
+ .gain = 8, \
+ .reference_voltage = 16, \
+ .noise_cancel_mode = 4, \
+ .cal_type = TYPE_ONE_POINT_TRIMMING, \
+ .efuse_value = 55, \
+ .min_efuse_value = 40, \
+ .max_efuse_value = 100, \
+ .first_point_trim = 25, \
+ .second_point_trim = 85, \
+ .default_temp_offset = 50, \
+ .freq_tab[0] = { \
+ .freq_clip_max = 1400 * 1000, \
+ .temp_level = 70, \
+ }, \
+ .freq_tab[1] = { \
+ .freq_clip_max = 800 * 1000, \
+ .temp_level = 85, \
+ }, \
+ .freq_tab[2] = { \
+ .freq_clip_max = 200 * 1000, \
+ .temp_level = 103, \
+ }, \
+ .freq_tab_count = 3, \
+ .registers = &exynos4412_tmu_registers, \
+ .features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_TRIM_RELOAD | \
+ TMU_SUPPORT_FALLING_TRIP | TMU_SUPPORT_READY_STATUS | \
+ TMU_SUPPORT_EMUL_TIME)
#endif

#if defined(CONFIG_SOC_EXYNOS4412)
struct exynos_tmu_init_data const exynos4412_default_tmu_data = {
.tmu_data = {
{
+#ifdef CONFIG_CPU_FREQ_BOOST_SW
+ EXYNOS4412_TMU_DATA_BOOST,
+#else
EXYNOS4412_TMU_DATA,
+#endif
.type = SOC_ARCH_EXYNOS4412,
.test_mux = EXYNOS4412_MUX_ADDR_VALUE,
},
--
1.7.10.4


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