linux-kernel - RE: [PATCH 1/3] ARM: Samsung S5P: Move the common Samsung S5P series GPIO level type

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Message-id: <011e01cb496d$c1e40440$45ac0cc0$%kim@samsung.com>
Date:	Wed, 01 Sep 2010 09:36:41 +0900
From:	Kukjin Kim <kgene.kim@...sung.com>
To:	'Kyungmin Park' <kmpark@...radead.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	jy0922.shim@...sung.com, m.szyprowski@...sung.com,
	ben-linux@...ff.org
Subject: RE: [PATCH 1/3] ARM: Samsung S5P: Move the common Samsung S5P series
 GPIO level type

Kyungmin Park wrote:
> 
> On Mon, Aug 30, 2010 at 9:01 PM, Kukjin Kim <kgene.kim@...sung.com> wrote:
> > Kyungmin Park wrote:
> >>
> >> From: Kyungmin Park <kyungmin.park@...sung.com>
> >>
> >> Samsung S5P series has common level type. It's different from S3C
series.
> >>
> >> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
> >> ---
> >>  arch/arm/plat-samsung/include/plat/gpio-core.h |    6 ++++++
> >>  1 files changed, 6 insertions(+), 0 deletions(-)
> >>
> >> diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h
> > b/arch/arm/plat-
> >> samsung/include/plat/gpio-core.h
> >> index e358c7d..c8681e0 100644
> >> --- a/arch/arm/plat-samsung/include/plat/gpio-core.h
> >> +++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
> >> @@ -14,6 +14,12 @@
> >>  #define GPIOCON_OFF  (0x00)
> >>  #define GPIODAT_OFF  (0x04)
> >>
> >> +#define S5P_GPIO_LEVEL_LOW           (0x00)
> >> +#define S5P_GPIO_LEVEL_HIGH          (0x01)
> >> +#define S5P_GPIO_EDGE_FALLING                (0x02)
> >> +#define S5P_GPIO_EDGE_RISING         (0x03)
> >> +#define S5P_GPIO_EDGE_BOTH           (0x04)
> >
> > Why should we change the name of definition from S5P_EXTINT_XXX?
> > If we use that, we don't need to change other files.
> 
> External interrupt is one of GPIOs. and it's used for GPIO interrupt.
> Do you want to use the EXTINT at generic gpio function?
> 
Right, it is one of the GPIO pin's usage.
But it doesn't mean that should be used like/with generic GPIO...
Even though the value of their polarity is same.

Anyway,...let's think about that again.

> Also change the name format as IRQ_TYPE_* style.
> 
(snip)

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@...sung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.

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