linux-kernel - Questions regarding mfd drivers

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Message-Id: <20080204123714.4be6e10c.Kristoffer.ericson@gmail.com>
Date:	Mon, 4 Feb 2008 12:37:14 +0100
From:	Kristoffer Ericson <kristoffer.ericson@...il.com>
To:	ben@...tech.co.uk, Paul Mundt <lethal@...ux-sh.org>
Cc:	linux-sh <linux-sh@...r.kernel.org>,
	linux-main <linux-kernel@...r.kernel.org>
Subject: Questions regarding mfd drivers

Greetings,

Trying to wrap my head around sm501. From what I can tell an mfd driver is a "master" driver that takes control of all
memory and io areas. It then hands out areas of those to drivers. Anywhere near correct?

I can see some benefit but still hard for me to motivate. What am I missing? What will the mfd be able to do, that I lack now?

The sm501 driver seems way more advanced than I will need for hd64461/hd64465 anyhow, but still need to understand sm501 completely before
attempting to write one on my own. Anyone know any documentation aside from example drivers?

Best wishes
Kristoffer
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