thermal: exynos: add get_emul_con_reg() helper

Factor out code for preparing EMUL_CON register value from
exynos_tmu_set_emulation() into get_emul_con_reg().

This is a preparation for introducing per-SoC type
tmu_set_emulation 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>

1 files changed, 23 insertions, 15 deletions

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index b209593d78dc..1b622ce0ee79 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -438,6 +438,28 @@ static int exynos_tmu_read(struct exynos_tmu_data *data)
 }
 
 #ifdef CONFIG_THERMAL_EMULATION
+static u32 get_emul_con_reg(struct exynos_tmu_data *data, unsigned int val,
+                            unsigned long temp)
+{
+        struct exynos_tmu_platform_data *pdata = data->pdata;
+
+        if (temp) {
+                temp /= MCELSIUS;
+
+                if (TMU_SUPPORTS(pdata, EMUL_TIME)) {
+                        val &= ~(EXYNOS_EMUL_TIME_MASK << EXYNOS_EMUL_TIME_SHIFT);
+                        val |= (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT);
+                }
+                val &= ~(EXYNOS_EMUL_DATA_MASK << EXYNOS_EMUL_DATA_SHIFT);
+                val |= (temp_to_code(data, temp) << EXYNOS_EMUL_DATA_SHIFT) |
+                        EXYNOS_EMUL_ENABLE;
+        } else {
+                val &= ~EXYNOS_EMUL_ENABLE;
+        }
+
+        return val;
+}
+
 static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
 {
         struct exynos_tmu_data *data = drv_data;
@@ -456,21 +478,7 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
         clk_enable(data->clk);
 
         val = readl(data->base + reg->emul_con);
-
-        if (temp) {
-                temp /= MCELSIUS;
-
-                if (TMU_SUPPORTS(pdata, EMUL_TIME)) {
-                        val &= ~(EXYNOS_EMUL_TIME_MASK << EXYNOS_EMUL_TIME_SHIFT);
-                        val |= (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT);
-                }
-                val &= ~(EXYNOS_EMUL_DATA_MASK << EXYNOS_EMUL_DATA_SHIFT);
-                val |= (temp_to_code(data, temp) << EXYNOS_EMUL_DATA_SHIFT) |
-                        EXYNOS_EMUL_ENABLE;
-        } else {
-                val &= ~EXYNOS_EMUL_ENABLE;
-        }
-
+        val = get_emul_con_reg(data, val, temp);
         writel(val, data->base + reg->emul_con);
 
         clk_disable(data->clk);