linux-kernel - Re: [PATCH] mfd: max77686: handle IRQs using regmap

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Date:	Wed, 26 Mar 2014 08:35:18 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Robert Baldyga <r.baldyga@...sung.com>
Cc:	sameo@...ux.intel.com, lee.jones@...aro.org, a.zummo@...ertech.it,
	linux-kernel@...r.kernel.org, rtc-linux@...glegroups.com,
	m.szyprowski@...sung.com
Subject: Re: [PATCH] mfd: max77686: handle IRQs using regmap

On Wed, 2014-03-26 at 08:10 +0100, Robert Baldyga wrote:
> This patch modifies mfd driver to use regmap for handling interrupts.
> It allows to simplify irq handling process. This modifications needed
> to make small changes in function drivers, which use interrupts.
> 
> Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
> ---
>  drivers/mfd/Kconfig                  |    2 +-
>  drivers/mfd/Makefile                 |    2 +-
>  drivers/mfd/max77686-irq.c           |  319 ----------------------------------
>  drivers/mfd/max77686.c               |   54 +++++-
>  drivers/rtc/rtc-max77686.c           |   43 ++++-
>  include/linux/mfd/max77686-private.h |   32 +++-
>  6 files changed, 119 insertions(+), 333 deletions(-)
>  delete mode 100644 drivers/mfd/max77686-irq.c

(...)

> diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
> index 9efe118..b8bc412 100644
> --- a/drivers/rtc/rtc-max77686.c
> +++ b/drivers/rtc/rtc-max77686.c
> @@ -497,6 +497,25 @@ static struct regmap_config max77686_rtc_regmap_config = {
>  	.val_bits = 8,
>  };
>  
> +static const struct regmap_irq max77686_irqs_rtc[] = {
> +	{ .mask = RTC_INT_RTC60S_MASK, },
> +	{ .mask = RTC_INT_RTCA1_MASK, },
> +	{ .mask = RTC_INT_RTCA2_MASK, },
> +	{ .mask = RTC_INT_SMPL_MASK, },
> +	{ .mask = RTC_INT_RTC1S_MASK, },
> +	{ .mask = RTC_INT_WTSR_MASK, },
> +};
> +
> +static const struct regmap_irq_chip max77686_irq_chip_rtc = {
> +	.name                   = "max77686-rtc",
> +	.status_base            = MAX77686_RTC_INT,
> +	.mask_base              = MAX77686_RTC_INTM,
> +	.mask_invert            = true,
> +	.num_regs               = 2,

I think there is only one RTC interrupt register (RTCINT).

Beside that, everything else looks fine.
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

Best regards,
Krzysztof

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