linux-kernel - Re: [PATCH] Bitbanging i2c bus driver using the GPIO API

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Date:	Sat, 10 Mar 2007 20:15:31 +0100
From:	Jean Delvare <khali@...ux-fr.org>
To:	David Brownell <david-b@...bell.net>
Cc:	Haavard Skinnemoen <hskinnemoen@...el.com>,
	Bryan Wu <bryan.wu@...log.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Deepak Saxena <dsaxena@...xity.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Bitbanging i2c bus driver using the GPIO API

On Fri, 9 Mar 2007 11:30:12 -0800, David Brownell wrote:
> > --- a/include/linux/i2c-id.h
> > +++ b/include/linux/i2c-id.h
> > @@ -194,6 +194,7 @@
> >  #define I2C_HW_B_EM28XX		0x01001f /* em28xx video capture cards */
> >  #define I2C_HW_B_CX2341X	0x010020 /* Conexant CX2341X MPEG encoder cards */
> >  #define I2C_HW_B_INTELFB	0x010021 /* intel framebuffer driver */
> > +#define I2C_HW_B_GPIO		0x010022 /* Generic GPIO-based driver */
> 
> It'd be nice to completely abolish those IDs, starting by not
> adding new ones.  Especially, not adding unused ones!

I'm confident that we'll be able to get rid of the I2C device driver
IDs pretty soon thanks to your new i2c-core model, but I'm not sure if
we'll be able to get rid of I2C adapter drivers IDs that quickly. But I
agree with you, please let's not add new unused IDs.

-- 
Jean Delvare
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