linux-kernel - Re: [PATCH 3/3] MFD: MAX8997: IRQ definition moved to public header.

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Message-ID: <BANLkTin4sCfX1Ahb_Td6VWH28s7SukYN-g@mail.gmail.com>
Date:	Thu, 30 Jun 2011 17:00:13 +0900
From:	MyungJoo Ham <myungjoo.ham@...il.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	linux-kernel@...r.kernel.org, Samuel Ortiz <sameo@...ux.intel.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Liam Girdwood <lrg@...mlogic.co.uk>,
	Donggeun Kim <dg77.kim@...sung.com>
Subject: Re: [PATCH 3/3] MFD: MAX8997: IRQ definition moved to public header.

On Thu, Jun 30, 2011 at 2:57 PM, Mark Brown
<broonie@...nsource.wolfsonmicro.com> wrote:
> On Thu, Jun 30, 2011 at 02:56:27PM +0900, MyungJoo Ham wrote:
>
>> In order to request MAX8997's IRQs, these IRQ enums are required by
>> board files (such as /arch/arm/mach-exynos4/mach-*.c). So, these IRQ
>> enums are no more "private" to max8997 device drivers. Without this
>> patch, board files need to include max8997-private.h.
>
> Why does the board file need to request these IRQs?
>


It specifies which interrupts of MAX8997 are used.

In our code:
http://git.infradead.org/users/kmpark/linux-2.6-samsung/blob/eba500212699c0ad8d6bde0dc01c3ec7101f8154:/arch/arm/mach-exynos4/setup-charger.c
around line 85, it specifies which interrupt is going to be a
wakeup-source ("true"), how the power-managing S/W should interpret
them.

The interrupts not listed in the array are not used as a wakeup-source.

-- 
MyungJoo Ham, Ph.D.
Mobile Software Platform Lab,
Digital Media and Communications (DMC) Business
Samsung Electronics
cell: 82-10-6714-2858
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