linux-kernel - [ 40/69] ALSA: hda - Add codec->no_jack

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Message-Id: <20120617175946.971901223@decadent.org.uk>
Date:	Sun, 17 Jun 2012 19:00:21 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Takashi Iwai <tiwai@...e.de>
Subject: [ 40/69] ALSA: hda - Add codec->no_jack_detect flag

3.2-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@...e.de>

commit 71b1e9e43d5199f57c109e20c0f4dffc5c048130 upstream.

Add a new flag to indicate that the codec has no jack-detection cap.
This flag should be set for hardwares that have no jack-detect
implementation although the codec chip itself supports it.

Signed-off-by: Takashi Iwai <tiwai@...e.de>
[bwh: Backported to 3.2: adjust filename and context for is_jack_detectable()]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -858,6 +858,7 @@
 	unsigned int pins_shutup:1;	/* pins are shut up */
 	unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */
 	unsigned int ignore_misc_bit:1; /* ignore MISC_NO_PRESENCE bit */
+	unsigned int no_jack_detect:1;	/* Machine has no jack-detection */
 #ifdef CONFIG_SND_HDA_POWER_SAVE
 	unsigned int power_on :1;	/* current (global) power-state */
 	unsigned int power_transition :1; /* power-state in transition */
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -515,6 +515,8 @@
 
 static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
 {
+	if (codec->no_jack_detect)
+		return false;
 	if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
 		return false;
 	if (!codec->ignore_misc_bit &&


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