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From: Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
To: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
Cc: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
Subject: Re: platform_data when using of?
Date: Thu, 24 Apr 2008 11:00:45 +0200	[thread overview]
Message-ID: <20080424090045.GA4201@pengutronix.de> (raw)
In-Reply-To: <20080423203012.24ed38b6-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>


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On Wed, Apr 23, 2008 at 08:30:12PM +0200, Jean Delvare wrote:

Hello Jean,

> Each i2c driver can support many different devices, which are
> differentiated simply by their name. So the driver can behave
> differently for each device type as needed.
We exactly threw this out of at24 in the new revision, as name-matching
stored quite some data in the driver which was needed only once during
initialization. Also, it was not very flexible; what if you want to mark
this chip as read-only, your variant has bigger page size and could be
faster... The list of device names would grow too fast IMHO, adding a
new feature which is selectable by a flag could easily double it.

Then again: If Jochen's patches get applied, then I have to use
MODULE_DEVICE_TABLE anyhow, or?

   Wolfram

-- 
  Dipl.-Ing. Wolfram Sang | http://www.pengutronix.de
 Pengutronix - Linux Solutions for Science and Industry

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  parent reply	other threads:[~2008-04-24  9:00 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-23 16:45 platform_data when using of? Wolfram Sang
2008-04-23 18:20 ` [i2c] " Jochen Friedrich
     [not found] ` <20080423164523.GA4190-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2008-04-23 18:30   ` Jean Delvare
     [not found]     ` <20080423203012.24ed38b6-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-04-24  9:00       ` Wolfram Sang [this message]
     [not found]         ` <20080424090045.GA4201-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2008-04-24 11:07           ` Jean Delvare

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