linux-kernel - Re: [PATCH v3] Add bt8xxgpio driver

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Date:	Thu, 10 Jul 2008 21:12:09 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Marcel Holtmann <marcel@...tmann.org>,
	David Brownell <david-b@...bell.net>
Subject: Re: [PATCH v3] Add bt8xxgpio driver

On Thursday 10 July 2008 21:02:58 Mauro Carvalho Chehab wrote:
> and your Kconfig allows someone
> to compile both the real driver and the gpio only driver

No it doesn't.

> So, this will cause a regression.

No it isn't.

> One alternative would be to make the gpio driver dependent of !VIDEO_BT848.

+config GPIO_BT8XX
+       tristate "BT8XX GPIO abuser"
+       depends on PCI && VIDEO_BT848=n

> Btw, if you are thinking on using it for your electronics hacking, one very
> interesting feature would be to use the bttv 8-bit high speed ADC as a generic
> ADC. On its normal operation, it samples from video inputs at 27 MHz (maybe you
> can sample on even higher frequencies, by properly configuring the sampling divider).

Cool, nice to know. But I'm currently only interested in digital IO.

-- 
Greetings Michael.
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