linux-kernel - Re: [PATCH v5] gpio: Add GPIO support for the WinSystems WS16C48

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Message-ID: <CACRpkdaMchsc9E-8JTMoKR6cFP9WEBTUrkPiQxqyrkGHXp-xWg@mail.gmail.com>
Date:	Thu, 28 Jan 2016 09:47:43 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	William Breathitt Gray <vilhelm.gray@...il.com>
Cc:	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>
Subject: Re: [PATCH v5] gpio: Add GPIO support for the WinSystems WS16C48

On Wed, Jan 20, 2016 at 7:45 PM, William Breathitt Gray
<vilhelm.gray@...il.com> wrote:

> The WinSystems WS16C48 device provides 48 lines of digital I/O. In
> addition, the first 24 lines may be used for interrupt-handled edge
> detection; rising edge detection and falling edge detection are
> supported.
>
> This driver provides GPIO and IRQ support for these 48 channels of
> digital I/O. The base port address for the device may be configured via
> the ws16c48_base module parameter. The interrupt line number for the
> device may be configured via the ws16c48_irq module parameter.
>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
> ---
> Changes in v5:
>   - Allow sharing the IRQ

Patch applied.

Out of curiosity: what is your usecase for all these exotic
GPIO cards?

Yours,
Linus Walleij