Some of Huawei laptops come with a LED in the mic mute key. This patch
enables and disable this LED when the internal microphone status is
changed.
Signed-off-by: Ayman Bagabas <ayman.baga...@gmail.com>
---
include/linux/huawei_wmi.h | 7 ++++
sound/pci/hda/huawei_wmi_helper.c | 66 +++++++++++++++++++++++++++++++
sound/pci/hda/patch_realtek.c | 12 ++++++
3 files changed, 85 insertions(+)
create mode 100644 include/linux/huawei_wmi.h
create mode 100644 sound/pci/hda/huawei_wmi_helper.c
diff --git a/include/linux/huawei_wmi.h b/include/linux/huawei_wmi.h
new file mode 100644
index 000000000000..69b656c5029b
--- /dev/null
+++ b/include/linux/huawei_wmi.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __HUAWEI_WMI_H__
+#define __HUAWEI_WMI_H__
+
+int huawei_wmi_micmute_led_set(bool on);
+
+#endif
diff --git a/sound/pci/hda/huawei_wmi_helper.c
b/sound/pci/hda/huawei_wmi_helper.c
new file mode 100644
index 000000000000..57256f51fd88
--- /dev/null
+++ b/sound/pci/hda/huawei_wmi_helper.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Helper functions for Huawei WMI Mic Mute LED;
+ * to be included from codec driver
+ */
+
+#if IS_ENABLED(CONFIG_HUAWEI_LAPTOP)
+#include <linux/huawei_wmi.h>
+
+static int (*huawei_wmi_micmute_led_set_func)(bool);
+
+static void update_huawei_wmi_micmute_led(struct hda_codec *codec,
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ if (!ucontrol || !huawei_wmi_micmute_led_set_func)
+ return;
+ if (strcmp("Capture Switch", ucontrol->id.name) == 0 &&
ucontrol->id.index == 0) {
+ /* TODO: How do I verify if it's a mono or stereo here? */
+ bool val = ucontrol->value.integer.value[0] ||
ucontrol->value.integer.value[1];
+ huawei_wmi_micmute_led_set_func(!val);
+ }
+}
+
+static void alc_fixup_huawei_wmi(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ struct hda_gen_spec *spec = codec->spec;
+ bool removefunc = false;
+
+ codec_info(codec, "In alc_fixup_huawei_wmi\n");
+
+ if (action == HDA_FIXUP_ACT_PROBE) {
+ if (!huawei_wmi_micmute_led_set_func)
+ huawei_wmi_micmute_led_set_func =
symbol_request(huawei_wmi_micmute_led_set);
+ if (!huawei_wmi_micmute_led_set_func) {
+ codec_warn(codec, "Failed to find huawei_wmi symbol
huawei_wmi_micmute_led_set\n");
+ return;
+ }
+
+ removefunc = true;
+ if (huawei_wmi_micmute_led_set_func(false) >= 0) {
+ if (spec->num_adc_nids > 1 && !spec->dyn_adc_switch)
+ codec_dbg(codec, "Skipping micmute LED control
due to several ADCs");
+ else {
+ spec->cap_sync_hook =
update_huawei_wmi_micmute_led;
+ removefunc = false;
+ }
+ }
+ codec_info(codec, "In alc_fixup_huawei_wmi IF\n");
+
+ }
+
+ if (huawei_wmi_micmute_led_set_func && (action == HDA_FIXUP_ACT_FREE ||
removefunc)) {
+ symbol_put(huawei_wmi_micmute_led_set);
+ huawei_wmi_micmute_led_set_func = NULL;
+ }
+}
+
+#else
+
+static void hda_fixup_huawei_wmi(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+}
+
+#endif
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 4f7a39c7883c..0dab00c0df50 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5371,6 +5371,9 @@ static void alc_fixup_thinkpad_acpi(struct hda_codec
*codec,
/* for dell wmi mic mute led */
#include "dell_wmi_helper.c"
+/* for huawei wmi mic mute led */
+#include "huawei_wmi_helper.c"
+
/* for alc295_fixup_hp_top_speakers */
#include "hp_x360_helper.c"
@@ -5494,6 +5497,7 @@ enum {
ALC255_FIXUP_DUMMY_LINEOUT_VERB,
ALC255_FIXUP_DELL_HEADSET_MIC,
ALC256_FIXUP_HUAWEI_MBXP_PINS,
+ ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED,
ALC295_FIXUP_HP_X360,
ALC221_FIXUP_HP_HEADSET_MIC,
};
@@ -6348,6 +6352,10 @@ static const struct hda_fixup alc269_fixups[] = {
.chained = true,
.chain_id = ALC269_FIXUP_HEADSET_MIC
},
+ [ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_huawei_wmi,
+ },
[ALC256_FIXUP_HUAWEI_MBXP_PINS] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -6363,6 +6371,8 @@ static const struct hda_fixup alc269_fixups[] = {
{0x21, 0x04211020},
{ },
},
+ .chained = true,
+ .chain_id = ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED
},
[ALC295_FIXUP_HP_X360] = {
.type = HDA_FIXUP_FUNC,
@@ -6610,6 +6620,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x511e, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x17aa, 0x511f, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x19e5, 0x3204, "Huawei MBXP",
ALC256_FIXUP_HUAWEI_MBXP_PINS),
+ SND_PCI_QUIRK(0x19e5, 0x3204, "Huawei MBXP",
ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED),
SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
SND_PCI_QUIRK(0x1b7d, 0xa831, "Ordissimo EVE2 ",
ALC269VB_FIXUP_ORDISSIMO_EVE2), /* Also known as Malata PC-B1303 */
@@ -6775,6 +6786,7 @@ static const struct hda_model_fixup alc269_fixup_models[]
= {
{.id = ALC274_FIXUP_DELL_AIO_LINEOUT_VERB, .name = "alc274-dell-aio"},
{.id = ALC255_FIXUP_DUMMY_LINEOUT_VERB, .name = "alc255-dummy-lineout"},
{.id = ALC255_FIXUP_DELL_HEADSET_MIC, .name = "alc255-dell-headset"},
+ {.id = ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED, .name =
"alc256-huawei-micmute"},
{.id = ALC295_FIXUP_HP_X360, .name = "alc295-hp-x360"},
{}
};
--
2.17.2
