linux-kernel - Re: [PATCH 5/8] pinctrl: core device tree mapping table parsing support

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Date:	Tue, 20 Mar 2012 13:21:16 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	B29396@...escale.com, s.hauer@...gutronix.de, dongas86@...il.com,
	shawn.guo@...aro.org, thomas.abraham@...aro.org, tony@...mide.com,
	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH 5/8] pinctrl: core device tree mapping table parsing support

On Fri, Mar 16, 2012 at 9:54 PM, Stephen Warren <swarren@...dotorg.org> wrote:

> During pinctrl_get(), if the client device has a device tree node, look
> for the common pinctrl properties there. If found, parse the referenced
> device tree nodes, with the help of the pinctrl drivers, and generate
> mapping table entries from them.
>
> During pinctrl_put(), free any results of device tree parsing.
>
> Signed-off-by: Stephen Warren <swarren@...dotorg.org>

Can we have it in a separate file like devicetree.[c|h] and
some stubs in the .h file for platforms that does not select
CONFIG_OF?

This:

+static int register_mappings(struct pinctrl_map const *maps, unsigned num_maps,
+                            bool dup, bool locked)

Instead of making this static, move the prototype to core.h and
use that from devicetree.c.

One rationale: the day after tomorrow we will have to get configs
from ACPI, UEFI and what not.

Apart from that I like the looks of this thing!

Yours,
Linus Walleij
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