linux-kernel - [PATCH v10 7/7] thermal:exynos:boost: Automatic enable/disable of BOOST feature (at Exynos4412)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 05 Nov 2013 18:26:51 +0100
From:	Lukasz Majewski <l.majewski@...sung.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <eduardo.valentin@...com>
Cc:	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	Lukasz Majewski <l.majewski@...ess.pl>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>, durgadoss.r@...el.com,
	Amit Daniel Kachhap <amit.daniel@...sung.com>
Subject: [PATCH v10 7/7] thermal:exynos:boost: Automatic enable/disable of
 BOOST feature (at Exynos4412)

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@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/