linux-kernel - [PATCH v2 2/2] therma: exynos: Supports thermal tripping

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Message-id: <00f401cdb733$97e429a0$c7ac7ce0$%choi@samsung.com>
Date:	Wed, 31 Oct 2012 15:47:27 +0900
From:	Jonghwan Choi <jhbird.choi@...sung.com>
To:	'Jonghwan Choi' <jhbird.choi@...sung.com>,
	'open list' <linux-kernel@...r.kernel.org>
Cc:	'Amit Daniel Kachhap' <amit.kachhap@...aro.org>,
	'Zhang Rui' <rui.zhang@...el.com>,
	'Sachin Kamat' <sachin.kamat@...aro.org>
Subject: [PATCH v2 2/2] therma: exynos: Supports thermal tripping

TMU urgently sends active-high signal (thermal trip) to PMU,
and thermal tripping by hardware logic i.e PMU is performed.
Thermal tripping means that PMU cut off the whole power of SoC
by controlling external voltage regulator.

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 drivers/thermal/exynos_thermal.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/thermal/exynos_thermal.c
b/drivers/thermal/exynos_thermal.c
index 6ce6667..5672e95 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -53,6 +53,7 @@
 #define EXYNOS_TMU_TRIM_TEMP_MASK      0xff
 #define EXYNOS_TMU_GAIN_SHIFT          8
 #define EXYNOS_TMU_REF_VOLTAGE_SHIFT   24
+#define EXYNOS_TMU_TRIP_EN             BIT(12)
 #define EXYNOS_TMU_CORE_ON             1
 #define EXYNOS_TMU_CORE_OFF            0
 #define EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET     50
@@ -656,6 +657,9 @@ static void exynos_tmu_control(struct platform_device
*pdev, bool on)
        if (data->soc == SOC_ARCH_EXYNOS) {
                con |= pdata->noise_cancel_mode <<
EXYNOS_TMU_TRIP_MODE_SHIFT;
                con |= (EXYNOS_MUX_ADDR_VALUE << EXYNOS_MUX_ADDR_SHIFT);
+
+               if (pdata->trigger_level3_en)
+                       con |= EXYNOS_TMU_TRIP_EN;
        }

        if (on) {
--
1.7.4.1

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