linux-kernel - Re: [PATCH 1/2] mfd: sec: Fix RTC alarm interrupt number on S2MPS11

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Message-ID: <20150407073728.GH3461@x1>
Date:	Tue, 7 Apr 2015 08:37:28 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Sangbeom Kim <sbkim73@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Subject: Re: [PATCH 1/2] mfd: sec: Fix RTC alarm interrupt number on S2MPS11

On Thu, 02 Apr 2015, Krzysztof Kozlowski wrote:

> The RTC on S2MPS11 is the same as S2MPS14. However interrupt numbers of
> RTC alarms 0 and 1 were inversed between these two devices. So when
> rtc-s5m driver requested S2MPS14_IRQ_RTCA0 interrupt, it matched to
> S2MPS11_IRQ_RTCA1, not RTCA0.
> 
> Fix this by using consistent RTC alarm interrupt numbers and adding a
> BUILD_BUG_ON for future generations.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> ---
>  drivers/mfd/sec-irq.c           | 14 ++++++++++----
>  include/linux/mfd/samsung/irq.h |  2 +-
>  2 files changed, 11 insertions(+), 5 deletions(-)

Applied, thanks.

> diff --git a/drivers/mfd/sec-irq.c b/drivers/mfd/sec-irq.c
> index ba86a918c2da..806fa8dbb22d 100644
> --- a/drivers/mfd/sec-irq.c
> +++ b/drivers/mfd/sec-irq.c
> @@ -61,14 +61,14 @@ static const struct regmap_irq s2mps11_irqs[] = {
>  		.reg_offset = 1,
>  		.mask = S2MPS11_IRQ_RTC60S_MASK,
>  	},
> -	[S2MPS11_IRQ_RTCA0] = {
> -		.reg_offset = 1,
> -		.mask = S2MPS11_IRQ_RTCA0_MASK,
> -	},
>  	[S2MPS11_IRQ_RTCA1] = {
>  		.reg_offset = 1,
>  		.mask = S2MPS11_IRQ_RTCA1_MASK,
>  	},
> +	[S2MPS11_IRQ_RTCA0] = {
> +		.reg_offset = 1,
> +		.mask = S2MPS11_IRQ_RTCA0_MASK,
> +	},
>  	[S2MPS11_IRQ_SMPL] = {
>  		.reg_offset = 1,
>  		.mask = S2MPS11_IRQ_SMPL_MASK,
> @@ -484,6 +484,12 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic)
>  		return ret;
>  	}
>  
> +	/*
> +	 * The rtc-s5m driver requests S2MPS14_IRQ_RTCA0 also for S2MPS11
> +	 * so the interrupt number must be consistent.
> +	 */
> +	BUILD_BUG_ON(((enum s2mps14_irq)S2MPS11_IRQ_RTCA0) != S2MPS14_IRQ_RTCA0);
> +
>  	return 0;
>  }
>  
> diff --git a/include/linux/mfd/samsung/irq.h b/include/linux/mfd/samsung/irq.h
> index f35af7361b60..667aa40486dd 100644
> --- a/include/linux/mfd/samsung/irq.h
> +++ b/include/linux/mfd/samsung/irq.h
> @@ -74,8 +74,8 @@ enum s2mps11_irq {
>  	S2MPS11_IRQ_MRB,
>  
>  	S2MPS11_IRQ_RTC60S,
> -	S2MPS11_IRQ_RTCA0,
>  	S2MPS11_IRQ_RTCA1,
> +	S2MPS11_IRQ_RTCA0,
>  	S2MPS11_IRQ_SMPL,
>  	S2MPS11_IRQ_RTC1S,
>  	S2MPS11_IRQ_WTSR,

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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