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| author | Jonghwa Lee <jonghwa3.lee@samsung.com> | 2013-11-04 14:23:22 +0900 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2013-11-15 13:52:55 +0900 |
| commit | 1c0b05d076f242e5ce62ba9275653beed73f52b5 (patch) | |
| tree | 25669ff7223eac68f6b104308263c176ab5ab1aa | |
| parent | d818f3e406067ff54faa4e75bbed8419e67921d2 (diff) | |
| download | linux-3.10-1c0b05d076f242e5ce62ba9275653beed73f52b5.tar.gz linux-3.10-1c0b05d076f242e5ce62ba9275653beed73f52b5.tar.bz2 linux-3.10-1c0b05d076f242e5ce62ba9275653beed73f52b5.zip | |
thermal: exynos: Set MUX bits in tmu's control register to work correctly.
Exynos 4x12 and 5250 need that MUX bits in control register is set to be
certain value at reset. Otherwise it'll reflect improper data when we
read current sensor's value. For other Exynos series, it doesn't need.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
| -rw-r--r-- | drivers/thermal/samsung/exynos_tmu.c | 10 | ||||
| -rw-r--r-- | drivers/thermal/samsung/exynos_tmu_data.h | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index b43afda8acd..fa6631a999b 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -322,6 +322,16 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on) con |= pdata->reference_voltage << reg->buf_vref_sel_shift; } + /* + * In Exynos 4x12 and 5250, + * MUX bits should be set to 0x6 for normal operation. + * For ohters, it can be ignored. + */ + if (pdata->type == SOC_ARCH_EXYNOS) { + con &= ~(EXYNOS_TMU_MUX_ADDR_MASK << EXYNOS_TMU_MUX_ADDR_SHIFT); + con |= EXYNOS_TMU_MUX_ADDR_DEFAULT << EXYNOS_TMU_MUX_ADDR_SHIFT; + } + if (pdata->gain) { con &= ~(reg->buf_slope_sel_mask << reg->buf_slope_sel_shift); con |= (pdata->gain << reg->buf_slope_sel_shift); diff --git a/drivers/thermal/samsung/exynos_tmu_data.h b/drivers/thermal/samsung/exynos_tmu_data.h index dc7feb51099..2144eaf5419 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.h +++ b/drivers/thermal/samsung/exynos_tmu_data.h @@ -35,6 +35,9 @@ #define EXYNOS_TMU_TEMP_MASK 0xff #define EXYNOS_TMU_REF_VOLTAGE_SHIFT 24 #define EXYNOS_TMU_REF_VOLTAGE_MASK 0x1f +#define EXYNOS_TMU_MUX_ADDR_DEFAULT 0x6 +#define EXYNOS_TMU_MUX_ADDR_MASK 0x7 +#define EXYNOS_TMU_MUX_ADDR_SHIFT 20 #define EXYNOS_TMU_BUF_SLOPE_SEL_MASK 0xf #define EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT 8 #define EXYNOS_TMU_CORE_EN_SHIFT 0 |