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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2014-11-13 16:01:12 +0100
committerEduardo Valentin <edubezval@gmail.com>2014-11-20 10:53:24 -0400
commitfe87789cd437378e7cf72c43b753703b2a835fc3 (patch)
tree120cc4d98e1f583bdf1277104f11d894f7b04b67 /drivers/thermal/samsung
parent8328a4b1d67fa6a4e0c51c27ddb7cb61b562f33e (diff)
downloadlinux-fe87789cd437378e7cf72c43b753703b2a835fc3.tar.bz2
thermal: exynos: add get_th_reg() helper
Factor out code for preparing threshold register value from exynos_tmu_initialize() into get_th_reg(). This is a preparation for introducing per-SoC type tmu_initialize method. There should be no functional changes caused by this patch. Cc: Amit Daniel Kachhap <amit.daniel@samsung.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal/samsung')
-rw-r--r--drivers/thermal/samsung/exynos_tmu.c37
1 files changed, 23 insertions, 14 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index b0c07151e2eb..6e82fdd860b0 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -158,6 +158,25 @@ static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)
EXYNOS_TMU_TEMP_MASK;
}
+static u32 get_th_reg(struct exynos_tmu_data *data, u32 threshold, bool falling)
+{
+ struct exynos_tmu_platform_data *pdata = data->pdata;
+ int i;
+
+ for (i = 0; i < pdata->non_hw_trigger_levels; i++) {
+ u8 temp = pdata->trigger_levels[i];
+
+ if (falling)
+ temp -= pdata->threshold_falling;
+ else
+ threshold &= ~(0xff << 8 * i);
+
+ threshold |= temp_to_code(data, temp) << 8 * i;
+ }
+
+ return threshold;
+}
+
static int exynos_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
@@ -221,8 +240,6 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
}
sanitize_temp_error(data, trim_info);
- rising_threshold = readl(data->base + reg->threshold_th0);
-
if (data->soc == SOC_ARCH_EXYNOS4210) {
/* Write temperature code for threshold */
threshold_code = temp_to_code(data, pdata->threshold);
@@ -235,18 +252,10 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
exynos_tmu_clear_irqs(data);
} else {
/* Write temperature code for rising and falling threshold */
- for (i = 0; i < pdata->non_hw_trigger_levels; i++) {
- threshold_code = temp_to_code(data,
- pdata->trigger_levels[i]);
- rising_threshold &= ~(0xff << 8 * i);
- rising_threshold |= threshold_code << 8 * i;
- if (data->soc != SOC_ARCH_EXYNOS5440) {
- threshold_code = temp_to_code(data,
- pdata->trigger_levels[i] -
- pdata->threshold_falling);
- falling_threshold |= threshold_code << 8 * i;
- }
- }
+ rising_threshold = readl(data->base + reg->threshold_th0);
+ rising_threshold = get_th_reg(data, rising_threshold, false);
+ if (data->soc != SOC_ARCH_EXYNOS5440)
+ falling_threshold = get_th_reg(data, 0, true);
writel(rising_threshold,
data->base + reg->threshold_th0);