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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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