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Message-Id: <20110506002213.075879573@clark.kroah.org>
Date:	Thu, 05 May 2011 17:21:05 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Risto Suominen <Risto.Suominen@...il.com>,
	Takashi Iwai <tiwai@...e.de>
Subject: [080/143] ALSA: powermac - Reverse HP detection on G4 DA

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Risto Suominen <Risto.Suominen@...il.com>

commit 819ef70b135ba66cd1659c913255686bf931e3d4 upstream.

Reverse headphone detection bit on PowerMac G4 Digital Audio (Tumbler).

Signed-off-by: Risto Suominen <Risto.Suominen@...il.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 sound/ppc/tumbler.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -30,6 +30,7 @@
 #include <linux/kmod.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
+#include <linux/string.h>
 #include <sound/core.h>
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -46,6 +47,8 @@
 #define DBG(fmt...)
 #endif
 
+#define IS_G4DA (machine_is_compatible("PowerMac3,4"))
+
 /* i2c address for tumbler */
 #define TAS_I2C_ADDR	0x34
 
@@ -1134,7 +1137,7 @@ static long tumbler_find_device(const ch
 		gp->inactive_val = (*base) ? 0x4 : 0x5;
 	} else {
 		const u32 *prop = NULL;
-		gp->active_state = 0;
+		gp->active_state = IS_G4DA && !strcmp(device, "keywest-gpio15");
 		gp->active_val = 0x4;
 		gp->inactive_val = 0x5;
 		/* Here are some crude hacks to extract the GPIO polarity and


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