linux-kernel - Re: [PATCH v3 1/2] thermal: exynos: Fix wrong bit to control tmu core

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Date:	Tue, 20 Nov 2012 10:39:30 +0900
From:	Kyungmin Park <kmpark@...radead.org>
To:	Jonghwan Choi <jhbird.choi@...sung.com>,
	"jonghwa3.lee" <jonghwa3.lee@...sung.com>
Cc:	open list <linux-kernel@...r.kernel.org>,
	Amit Daniel Kachhap <amit.kachhap@...aro.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH v3 1/2] thermal: exynos: Fix wrong bit to control tmu core

On 11/20/12, Jonghwan Choi <jhbird.choi@...sung.com> wrote:
> [0]bit is used to enable/disable tmu core. [1] bit is a reserved bit.
>
> Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
Acked-by: Kyungmin Park <kyungmin.park@...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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