linux-kernel - [ 093/153] ALSA: hda - hdmi: Make jacks phantom, if theyre not detectable

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Date:	Mon, 04 Mar 2013 03:38:40 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org,
	David Henningsson <david.henningsson@...onical.com>,
	Takashi Iwai <tiwai@...e.de>
Subject: [ 093/153] ALSA: hda - hdmi: Make jacks phantom, if theyre not detectable

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

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

From: David Henningsson <david.henningsson@...onical.com>

commit 30efd8debd1ef30be342d374f01e993509f5b76b upstream.

Just as for analog codecs, a jack that isn't suitable for detection
(in this case, NO_PRESENCE was set) should be a phantom Jack
instead of a normal one.

Thanks to Raymond Yau for spotting.

BugLink: https://bugs.launchpad.net/bugs/961286
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=903869
Signed-off-by: David Henningsson <david.henningsson@...onical.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/pci/hda/patch_hdmi.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1228,6 +1228,9 @@ static int generic_hdmi_build_jack(struc
 	int pcmdev = spec->pcm_rec[pin_idx].device;
 
 	snprintf(hdmi_str, sizeof(hdmi_str), "HDMI/DP,pcm=%d", pcmdev);
+	if (!is_jack_detectable(codec, per_pin->pin_nid))
+		strncat(hdmi_str, " Phantom",
+			sizeof(hdmi_str) - strlen(hdmi_str) - 1);
 
 	err = snd_hda_input_jack_add(codec, per_pin->pin_nid,
 			     SND_JACK_VIDEOOUT, pcmdev > 0 ? hdmi_str : NULL);


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