linux-kernel - Re: [PATCH V6 12/30] thermal: exynos: Fix to clear only the generated interrupts

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Message-ID: <51C2300C.9090503@ti.com>
Date:	Wed, 19 Jun 2013 18:26:20 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Amit Daniel Kachhap <amit.daniel@...sung.com>
CC:	<linux-pm@...r.kernel.org>, Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <eduardo.valentin@...com>,
	<linux-samsung-soc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <amit.kachhap@...il.com>,
	Kukjin Kim <kgene.kim@...sung.com>, <jonghwa3.lee@...sung.com>
Subject: Re: [PATCH V6 12/30] thermal: exynos: Fix to clear only the generated
 interrupts

On 17-06-2013 02:46, Amit Daniel Kachhap wrote:
> This patch uses the TMU status register to know the generated interrupts
> and only clear them in the interrupt handler.
> 
> Acked-by: Kukjin Kim <kgene.kim@...sung.com>
> Acked-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
> Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
> ---

Acked-by: Eduardo Valentin <eduardo.valentin@...com>

>  drivers/thermal/samsung/exynos_tmu.c      |   11 +++++------
>  drivers/thermal/samsung/exynos_tmu_data.c |    2 ++
>  2 files changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
> index 33f494e..f6f63ca 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -351,17 +351,16 @@ static void exynos_tmu_work(struct work_struct *work)
>  			struct exynos_tmu_data, irq_work);
>  	struct exynos_tmu_platform_data *pdata = data->pdata;
>  	const struct exynos_tmu_registers *reg = pdata->registers;
> +	unsigned int val_irq;
>  
>  	exynos_report_trigger();
>  	mutex_lock(&data->lock);
>  	clk_enable(data->clk);
>  
> -	if (data->soc == SOC_ARCH_EXYNOS)
> -		writel((reg->inten_rise_mask << reg->inten_rise_shift) |
> -			(reg->inten_fall_mask << reg->inten_fall_shift),
> -				data->base + reg->tmu_intclear);
> -	else
> -		writel(reg->inten_rise_mask, data->base + reg->tmu_intclear);
> +	/* TODO: take action based on particular interrupt */
> +	val_irq = readl(data->base + reg->tmu_intstat);
> +	/* clear the interrupts */
> +	writel(val_irq, data->base + reg->tmu_intclear);
>  
>  	clk_disable(data->clk);
>  	mutex_unlock(&data->lock);
> diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
> index e7cb1cc..7fcf183 100644
> --- a/drivers/thermal/samsung/exynos_tmu_data.c
> +++ b/drivers/thermal/samsung/exynos_tmu_data.c
> @@ -45,6 +45,7 @@ static const struct exynos_tmu_registers exynos4210_tmu_registers = {
>  	.inten_rise1_shift = EXYNOS_TMU_INTEN_RISE1_SHIFT,
>  	.inten_rise2_shift = EXYNOS_TMU_INTEN_RISE2_SHIFT,
>  	.inten_rise3_shift = EXYNOS_TMU_INTEN_RISE3_SHIFT,
> +	.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
>  	.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
>  };
>  struct exynos_tmu_platform_data const exynos4210_default_tmu_data = {
> @@ -112,6 +113,7 @@ static const struct exynos_tmu_registers exynos5250_tmu_registers = {
>  	.inten_rise2_shift = EXYNOS_TMU_INTEN_RISE2_SHIFT,
>  	.inten_rise3_shift = EXYNOS_TMU_INTEN_RISE3_SHIFT,
>  	.inten_fall0_shift = EXYNOS_TMU_INTEN_FALL0_SHIFT,
> +	.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
>  	.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
>  	.emul_con = EXYNOS_EMUL_CON,
>  	.emul_temp_shift = EXYNOS_EMUL_DATA_SHIFT,
> 


-- 
You have got to be excited about what you are doing. (L. Lamport)

Eduardo Valentin


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