Some of Huawei laptops come with a LED in the mic mute key. This patch enables and disable this LED accordingly.
Signed-off-by: Ayman Bagabas ayman.bagabas@gmail.com --- drivers/platform/x86/huawei_wmi.c | 1 + include/linux/huawei_wmi.h | 7 +++++ sound/pci/hda/huawei_wmi_helper.c | 48 +++++++++++++++++++++++++++++++ sound/pci/hda/patch_realtek.c | 10 +++++++ 4 files changed, 66 insertions(+) create mode 100644 include/linux/huawei_wmi.h create mode 100644 sound/pci/hda/huawei_wmi_helper.c
diff --git a/drivers/platform/x86/huawei_wmi.c b/drivers/platform/x86/huawei_wmi.c index 83545217ac19..cc5492571727 100644 --- a/drivers/platform/x86/huawei_wmi.c +++ b/drivers/platform/x86/huawei_wmi.c @@ -26,6 +26,7 @@ #include <linux/input/sparse-keymap.h> #include <linux/acpi.h> #include <linux/wmi.h> +#include <linux/huawei_wmi.h>
MODULE_AUTHOR("Ayman Bagabas ayman.bagabas@gmail.com"); MODULE_DESCRIPTION("Huawei WMI hotkeys"); 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..77edb658cbf0 --- /dev/null +++ b/sound/pci/hda/huawei_wmi_helper.c @@ -0,0 +1,48 @@ +// 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 hda_gen_spec *spec = codec->spec; + + huawei_wmi_micmute_led_set_func(spec->micmute_led.led_value); +} + +static void alc_fixup_huawei_wmi(struct hda_codec *codec, + const struct hda_fixup *fix, int action) +{ + bool removefunc = false; + + 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 = (huawei_wmi_micmute_led_set_func(false) < 0) + || (snd_hda_gen_add_micmute_led(codec, update_huawei_wmi_micmute_led) < 0); + + } + + 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 alc_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..d09457d2a4f3 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5374,6 +5374,9 @@ static void alc_fixup_thinkpad_acpi(struct hda_codec *codec, /* for alc295_fixup_hp_top_speakers */ #include "hp_x360_helper.c"
+/* for alc_fixup_huawei_micmute_led */ +#include "huawei_wmi_helper.c" + enum { ALC269_FIXUP_SONY_VAIO, ALC275_FIXUP_SONY_VAIO_GPIO2, @@ -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,