ALSA: hda - Fix audio crackles on Dell Latitude E7x40

We still got a report that the audio crackles and noises occur with
the recent 4.1 kernels on Dell machines.  These machines seem to need
similar workarounds that have been applied to the recent Dell XPS 13
models.  Since the codec of these machines (Dell Latitute E7240 and
E7440) is different from XPS 13's one, we need a new fixup entry.

Also, it was confirmed that the previous workaround to disable the
widget power-save (commit [219f47e4f964: ALSA: hda - Disable widget
power-saving for ALC292 & co]) is no longer needed after this fix.
So, this patch includes the partial revert of the commit, too.

Reported-and-tested-by: Mihai Donțu <mihai.dontu@gmail.com>
Tested-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 0320cb523d9e68112d34f28b8f621c6c10cc6cc3..919051d92a0be00b1300f686996b6464f425c4d0 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4515,6 +4515,8 @@ enum {
        ALC288_FIXUP_DELL_HEADSET_MODE,
        ALC288_FIXUP_DELL1_MIC_NO_PRESENCE,
        ALC288_FIXUP_DELL_XPS_13_GPIO6,
+       ALC292_FIXUP_DELL_E7X,
+       ALC292_FIXUP_DISABLE_AAMIX,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -5037,6 +5039,16 @@ static const struct hda_fixup alc269_fixups[] = {
                .chained = true,
                .chain_id = ALC288_FIXUP_DELL1_MIC_NO_PRESENCE
        },
+       [ALC292_FIXUP_DISABLE_AAMIX] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = alc_fixup_disable_aamix,
+       },
+       [ALC292_FIXUP_DELL_E7X] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = alc_fixup_dell_xps13,
+               .chained = true,
+               .chain_id = ALC292_FIXUP_DISABLE_AAMIX
+       },
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -5049,6 +5061,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
        SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
        SND_PCI_QUIRK(0x1025, 0x079b, "Acer Aspire V5-573G", ALC282_FIXUP_ASPIRE_V5_PINS),
        SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
+       SND_PCI_QUIRK(0x1028, 0x05ca, "Dell Latitude E7240", ALC292_FIXUP_DELL_E7X),
+       SND_PCI_QUIRK(0x1028, 0x05cb, "Dell Latitude E7440", ALC292_FIXUP_DELL_E7X),
        SND_PCI_QUIRK(0x1028, 0x05da, "Dell Vostro 5460", ALC290_FIXUP_SUBWOOFER),
        SND_PCI_QUIRK(0x1028, 0x05f4, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
        SND_PCI_QUIRK(0x1028, 0x05f5, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
@@ -5637,8 +5651,7 @@ static int patch_alc269(struct hda_codec *codec)
 
        spec = codec->spec;
        spec->gen.shared_mic_vref_pin = 0x18;
-       if (codec->core.vendor_id != 0x10ec0292)
-               codec->power_save_node = 1;
+       codec->power_save_node = 1;
 
        snd_hda_pick_fixup(codec, alc269_fixup_models,
                       alc269_fixup_tbl, alc269_fixups);