linux-kernel - Re: [PATCH 3/8] gpio: stmpe: fix edge and rising/falling edge detection

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Message-ID: <CACRpkdZWmYo-QgVgYaoHwUV7t=e5MGi-Ge5oWjKAi46+h1JMWg@mail.gmail.com>
Date:	Wed, 20 Apr 2016 16:37:30 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Patrice CHOTARD <patrice.chotard@...com>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Maxime Coquelin <maxime.coquelin@...com>,
	amelie.delaunay@...com, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Viresh Kumar <vireshk@...nel.org>,
	Shiraz Hashim <shiraz.linux.kernel@...il.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH 3/8] gpio: stmpe: fix edge and rising/falling edge detection

On Tue, Apr 19, 2016 at 2:18 PM,  <patrice.chotard@...com> wrote:

> From: Patrice Chotard <patrice.chotard@...com>
>
> By cross-checking STMPE 610/801/811/1601/2401/2403 datasheets,
> it appears that edge detection and rising/falling edge detection
> is not supported by all STMPE variant:
>
>            GPIO              GPIO
>       Edge detection     rising/falling
>                          edge detection
>  610 |      X        |         X       |
>  801 |               |                 |
>  811 |      X        |         X       |
> 1600 |               |                 |
> 1601 |      X        |         X       |
> 1801 |               |         X       |
> 2401 |      X        |         X       |
> 2403 |      X        |         X       |
>
> Rework stmpe_dbg_show_one() and stmpe_gpio_irq to correctly
> take these cases into account.
>
> Signed-off-by: Patrice Chotard <patrice.chotard@...com>

Very nice.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

I expect this to go into the MFD tree with the rest, I guess
Lee will cook me an immutable branch for the whole thing
once he's happy with it.

Yours,
Linus Walleij