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.bagabas@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"}, {} };