linux-kernel - Re: [PATCH 1/6] Core driver for WM97xx touchscreens

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Date:	Tue, 12 Feb 2008 23:28:43 -0500 (EST)
From:	"Pete MacKay" <linux01@...hitechnical.net>
To:	"Mark Brown" <broonie@...nsource.wolfsonmicro.com>
Cc:	"Dmitry Torokhov" <dtor@...l.ru>,
	linux-input@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org,
	"Mark Brown" <broonie@...nsource.wolfsonmicro.com>,
	"Liam Girdwood" <liam.girdwood@...fsonmicro.com>,
	"Graeme Gregory" <gg@...nsource.wolfsonmicro.com>,
	"Mike Arthur" <mike.arthur@...fsonmicro.com>,
	"Dmitry Baryshkov" <dbaryshkov@...il.com>,
	"Stanley Cai" <stanley.cai@...el.com>,
	"Rodolfo Giometti" <giometti@...eenne.com>,
	"Russell King" <rmk@....linux.org.uk>,
	"Pete MacKay" <linux01@...hitechnical.net>,
	"Marc Kleine-Budde" <mkl@...gutronix.de>,
	"Ian Molton" <spyro@....com>,
	"Vincent Sanders" <vince@...likki.org>,
	"Andrew Zabolotny" <zap@...elink.ru>
Subject: Re: [PATCH 1/6] Core driver for WM97xx touchscreens

> This patch series adds support for the touchscreen controllers provided
> by Wolfson Microelectronics WM97xx series chips in both polled and
> streaming modes.

We're using the wm9712 codec with the sound/soc/pxa code configured in and
came across this build error:

In file included from include/linux/wm97xx.h:9,
                 from drivers/input/touchscreen/wm97xx-core.c:50:
include/sound/core.h:281: error: `SNDRV_CARDS' undeclared here (not in a
function)

I had to apply the following one-line patch to the header:

Index: linux-2.6.24.labquest/include/linux/wm97xx.h
===================================================================
--- linux-2.6.24.labquest.orig/include/linux/wm97xx.h	2008-02-12
20:17:11.000000000 -0800
+++ linux-2.6.24.labquest/include/linux/wm97xx.h	2008-02-12
20:17:39.000000000 -0800
@@ -6,6 +6,7 @@
 #ifndef _LINUX_WM97XX_H
 #define _LINUX_WM97XX_H

+#include <sound/driver.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>

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