Patch "ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520" has been added to the 4.14-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     alsa-hda-realtek-fix-dock-line-out-volume-on-dell-precision-7520.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From e312a869cd726c698a75caca0d9e5c22fd3f1534 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 6 Mar 2018 12:14:17 +0100
Subject: ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520

From: Takashi Iwai <tiwai@suse.de>

commit e312a869cd726c698a75caca0d9e5c22fd3f1534 upstream.

The dock line-out pin (NID 0x17 of ALC3254 codec) on Dell Precision
7520 may route to three different DACs, 0x02, 0x03 and 0x06.  The
first two DACS have the volume amp controls while the last one
doesn't.  And unfortunately, the auto-parser assigns this pin to DAC3,
resulting in the non-working volume control for the line out.

Fix it by disabling the routing to DAC3 on the corresponding pin.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199029
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_realtek.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5129,6 +5129,16 @@ static void alc298_fixup_speaker_volume(
 	}
 }
 
+/* disable DAC3 (0x06) selection on NID 0x17 as it has no volume amp control */
+static void alc295_fixup_disable_dac3(struct hda_codec *codec,
+				      const struct hda_fixup *fix, int action)
+{
+	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+		hda_nid_t conn[2] = { 0x02, 0x03 };
+		snd_hda_override_conn_list(codec, 0x17, 2, conn);
+	}
+}
+
 /* Hook to update amp GPIO4 for automute */
 static void alc280_hp_gpio4_automute_hook(struct hda_codec *codec,
 					  struct hda_jack_callback *jack)
@@ -5321,6 +5331,7 @@ enum {
 	ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY,
 	ALC255_FIXUP_DELL_SPK_NOISE,
 	ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
+	ALC295_FIXUP_DISABLE_DAC3,
 	ALC280_FIXUP_HP_HEADSET_MIC,
 	ALC221_FIXUP_HP_FRONT_MIC,
 	ALC292_FIXUP_TPT460,
@@ -6055,6 +6066,10 @@ static const struct hda_fixup alc269_fix
 		.chained = true,
 		.chain_id = ALC298_FIXUP_DELL_AIO_MIC_NO_PRESENCE,
 	},
+	[ALC295_FIXUP_DISABLE_DAC3] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc295_fixup_disable_dac3,
+	},
 	[ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -6245,6 +6260,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
 	SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
 	SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
+	SND_PCI_QUIRK(0x1028, 0x07b0, "Dell Precision 7520", ALC295_FIXUP_DISABLE_DAC3),
 	SND_PCI_QUIRK(0x1028, 0x0798, "Dell Inspiron 17 7000 Gaming", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER),
 	SND_PCI_QUIRK(0x1028, 0x080c, "Dell WYSE", ALC225_FIXUP_DELL_WYSE_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x082a, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),


Patches currently in stable-queue which might be from tiwai@suse.de are

queue-4.14/alsa-seq-don-t-allow-resizing-pool-in-use.patch
queue-4.14/documentation-sphinx-fix-directive-import-error.patch
queue-4.14/alsa-hda-add-dock-and-led-support-for-hp-probook-640-g2.patch
queue-4.14/alsa-hda-realtek-make-dock-sound-work-on-thinkpad-l570.patch
queue-4.14/alsa-hda-realtek-limit-mic-boost-on-t480.patch
queue-4.14/alsa-hda-add-dock-and-led-support-for-hp-elitebook-820-g3.patch
queue-4.14/alsa-seq-more-protection-for-concurrent-write-and-ioctl-races.patch
queue-4.14/alsa-hda-realtek-add-support-headset-mode-for-dell-wyse.patch
queue-4.14/alsa-hda-realtek-add-headset-mode-support-for-dell-laptop.patch
queue-4.14/alsa-hda-fix-a-wrong-fixup-for-alc289-on-dell-machines.patch
queue-4.14/alsa-hda-realtek-fix-dock-line-out-volume-on-dell-precision-7520.patch