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ALSA: hda/conexant: Fix silent speaker on Huawei MateBook 14 (SN6140)

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On the Huawei MateBook 14 (PCI SSID 19e5:329e), the SN6140 codec
silently routes the speaker output through the headphone pin's
connection select: whatever DAC the headphone pin 0x16 is connected to,
the speaker pin 0x17 follows.  The generic parser attaches the playback
stream to DAC 0x10 (shared by the headphone path) and mutes that DAC
when no headphone is plugged, silencing the internal speaker while the
headphone jack keeps working.

Add a quirk for this machine that suppresses the auto-mute, binds the
speaker pin to the shared DAC 0x10, removes the mute switch on that DAC
so userspace cannot mute it, and re-applies the routing after every
output update; at init it routes both pins to DAC 0x10, enables the
speaker EAPD (which the driver otherwise leaves off) and unmutes the
DAC.

Note that this is a different problem than the existing Huawei
Matebook quirk for SSID 19e5:3289 (commit d152afd1cd), which fixes a
missing headphone jack; that machine has working speakers.

Tested on Ubuntu 26.04 (kernels 7.0.0-30 and 7.0.0-31): the speaker
plays at boot without any userspace helper, and keeps working across
suspend/resume.

Signed-off-by: Liu Eason <liudongxjtu@outlook.com>
Link: https://lore.kernel.org/ME3PR01MB75042406F30EE48AB6DA3595BD862@ME3PR01MB7504.ausprd01.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Liu Eason 2026-09-19 21:08:13 +08:00 committed by Takashi Iwai
parent 1e3e378d63
commit b57f5571a3
1 changed files with 67 additions and 0 deletions
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67
sound/hda/codecs/conexant.c
View File

@ -312,6 +312,7 @@ enum {
CXT_FIXUP_HP_A_U,
CXT_FIXUP_ACER_SWIFT_HP,
CXT_FIXUP_HUAWEI_MATEBOOK_HP,
CXT_FIXUP_MATEBOOK14_SN6140,
};
/* for hda_fixup_thinkpad_acpi() */
@ -817,6 +818,67 @@ static void cxt_fixup_hp_a_u(struct hda_codec *codec,
cxt_setup_gpio_unmute(codec, 0x2);
}
/* Huawei MateBook 14 (SN6140): the speaker output follows the headphone
* pin's connection select in hardware. Both pins must be routed to the
* shared DAC 0x10, which carries the playback stream; the generic
* parser mutes that DAC when no headphone is plugged, silencing the
* speaker. Suppress the auto-mute, bind the speaker pin to the shared
* DAC, remove its mute switch and keep it unmuted; the auto-mute hook
* re-applies the routing after every output update.
*/
static void cxt_mb14_route_unmute(struct hda_codec *codec)
{
/* route both pins to the shared DAC 0x10, enable the speaker
* EAPD and unmute the DAC at a moderate gain; the vmaster
* volume takes over once userspace starts
*/
snd_hda_codec_write(codec, 0x16, 0, AC_VERB_SET_CONNECT_SEL, 0);
snd_hda_codec_write(codec, 0x17, 0, AC_VERB_SET_CONNECT_SEL, 0);
snd_hda_codec_write(codec, 0x17, 0, AC_VERB_SET_EAPD_BTLENABLE, 0x02);
snd_hda_codec_amp_stereo(codec, 0x10, HDA_OUTPUT, 0,
HDA_AMP_VOLMASK | HDA_AMP_MUTE, 0x40);
}
static void cxt_mb14_automute(struct hda_codec *codec)
{
snd_hda_gen_update_outputs(codec);
cxt_mb14_route_unmute(codec);
}
static void cxt_fixup_matebook14_sn6140(struct hda_codec *codec,
const struct hda_fixup *fix, int action)
{
struct conexant_spec *spec = codec->spec;
if (action == HDA_FIXUP_ACT_PRE_PROBE) {
static const hda_nid_t dac_0x10[] = { 0x10 };
spec->gen.suppress_auto_mute = 1;
spec->gen.automute_hook = cxt_mb14_automute;
/* Bind the speaker pin to the shared DAC 0x10.
*/
snd_hda_override_conn_list(codec, 0x17, 1, dac_0x10);
return;
}
if (action == HDA_FIXUP_ACT_PROBE) {
unsigned int caps;
/* Remove the mute switch on the shared DAC so that
* userspace (WirePlumber) cannot mute it when the
* headphone route becomes unavailable (e.g. after
* resume). Must be done here: the codec regmap is not
* available at pre-probe time.
*/
caps = query_amp_caps(codec, 0x10, HDA_OUTPUT);
snd_hda_override_amp_caps(codec, 0x10, HDA_OUTPUT,
caps & ~AC_AMPCAP_MUTE);
return;
}
if (action != HDA_FIXUP_ACT_INIT)
return;
cxt_mb14_route_unmute(codec);
}
/* ThinkPad X200 & co with cxt5051 */
static const struct hda_pintbl cxt_pincfg_lenovo_x200[] = {
{ 0x16, 0x042140ff }, /* HP (seq# overridden) */
@ -1062,6 +1124,10 @@ static const struct hda_fixup cxt_fixups[] = {
{ }
},
},
[CXT_FIXUP_MATEBOOK14_SN6140] = {
.type = HDA_FIXUP_FUNC,
.v.func = cxt_fixup_matebook14_sn6140,
},
};
static const struct hda_quirk cxt5045_fixups[] = {
@ -1164,6 +1230,7 @@ static const struct hda_quirk cxt5066_fixups[] = {
SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC),
SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad/Ideapad", CXT_FIXUP_LENOVO_XPAD_ACPI),
SND_PCI_QUIRK(0x19e5, 0x3289, "Huawei Matebook", CXT_FIXUP_HUAWEI_MATEBOOK_HP),
SND_PCI_QUIRK(0x19e5, 0x329e, "Huawei MateBook 14", CXT_FIXUP_MATEBOOK14_SN6140),
SND_PCI_QUIRK(0x1c06, 0x2011, "Lemote A1004", CXT_PINCFG_LEMOTE_A1004),
SND_PCI_QUIRK(0x1c06, 0x2012, "Lemote A1205", CXT_PINCFG_LEMOTE_A1205),
SND_PCI_QUIRK(0x1d05, 0x3012, "MECHREVO Wujie 15X Pro", CXT_FIXUP_HEADSET_MIC),