linux-kernel - [PATCH v4 1/2] thermal: exynos: Fix wrong bit to control tmu core

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Message-id: <000001cdcb75$bfb84870$3f28d950$%choi@samsung.com>
Date:	Mon, 26 Nov 2012 10:31:24 +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>,
	'Sachin Kamat' <sachin.kamat@...aro.org>,
	'Zhang Rui' <rui.zhang@...el.com>
Subject: [PATCH v4 1/2] thermal: exynos: Fix wrong bit to control tmu core

[0]bit is used to enable/disable tmu core. [1] bit is a reserved bit.

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 drivers/thermal/exynos_thermal.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/exynos_thermal.c
b/drivers/thermal/exynos_thermal.c
index 6dd29e4..129e827 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -52,9 +52,12 @@

 #define EXYNOS_TMU_TRIM_TEMP_MASK      0xff
 #define EXYNOS_TMU_GAIN_SHIFT          8
+#define EXYNOS_TMU_GAIN_MASK           (0xF << EXYNOS_TMU_GAIN_SHIFT)
 #define EXYNOS_TMU_REF_VOLTAGE_SHIFT   24
-#define EXYNOS_TMU_CORE_ON             3
-#define EXYNOS_TMU_CORE_OFF            2
+#define EXYNOS_TMU_REF_VOLTAGE_MASK    (0x1F <<
EXYNOS_TMU_REF_VOLTAGE_SHIFT)
+#define EXYNOS_TMU_CORE_ON             BIT(0)
+#define EXYNOS_TMU_CORE_ON_SHIFT       0
+#define EXYNOS_TMU_CORE_ON_MASK                (0x1 <<
EXYNOS_TMU_CORE_ON_SHIFT)
 #define EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET     50

 /* Exynos4210 specific registers */
@@ -85,7 +88,9 @@
 #define EXYNOS_TMU_CLEAR_FALL_INT      (0x111 << 16)
 #define EXYNOS_MUX_ADDR_VALUE          6
 #define EXYNOS_MUX_ADDR_SHIFT          20
+#define EXYNOS_MUX_ADDR_MASK           (0x7 << EXYNOS_MUX_ADDR_SHIFT)
 #define EXYNOS_TMU_TRIP_MODE_SHIFT     13
+#define EXYNOS_TMU_TRIP_MODE_MASK      (0x7 << EXYNOS_TMU_TRIP_MODE_SHIFT)

 #define EFUSE_MIN_VALUE 40
 #define EFUSE_MAX_VALUE 100
@@ -650,10 +655,14 @@ static void exynos_tmu_control(struct platform_device
*pdev, bool on)
        mutex_lock(&data->lock);
        clk_enable(data->clk);

-       con = pdata->reference_voltage << EXYNOS_TMU_REF_VOLTAGE_SHIFT |
+       con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
+       con &= ~(EXYNOS_TMU_REF_VOLTAGE_MASK | EXYNOS_TMU_GAIN_MASK |
+               EXYNOS_TMU_CORE_ON_MASK);
+       con |= pdata->reference_voltage << EXYNOS_TMU_REF_VOLTAGE_SHIFT |
                pdata->gain << EXYNOS_TMU_GAIN_SHIFT;

        if (data->soc == SOC_ARCH_EXYNOS) {
+               con &= ~(EXYNOS_TMU_TRIP_MODE_MASK | EXYNOS_MUX_ADDR_MASK);
                con |= pdata->noise_cancel_mode <<
EXYNOS_TMU_TRIP_MODE_SHIFT;
                con |= (EXYNOS_MUX_ADDR_VALUE << EXYNOS_MUX_ADDR_SHIFT);
        }
@@ -665,7 +674,6 @@ static void exynos_tmu_control(struct platform_device
*pdev, bool on)
                        pdata->trigger_level1_en << 4 |
                        pdata->trigger_level0_en;
        } else {
-               con |= EXYNOS_TMU_CORE_OFF;
                interrupt_en = 0; /* Disable all interrupts */
        }
        writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN);
--
1.7.4.1

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