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Subject[PATCH v6 3/3] ALSA: hda: add support for Huawei WMI micmute LED
Date
Some of Huawei laptops come with a LED in the micmute key. This patch
enables the use of micmute LED for these devices:
1. Matebook X (19e5:3200), (19e5:3201)
2. Matebook X Pro (19e5:3204)

Signed-off-by: Ayman Bagabas <ayman.bagabas@gmail.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
---
sound/pci/hda/huawei_wmi_helper.c | 47 +++++++++++++++++++++++++++++++
sound/pci/hda/patch_realtek.c | 14 ++++++++-
2 files changed, 60 insertions(+), 1 deletion(-)
create mode 100644 sound/pci/hda/huawei_wmi_helper.c

diff --git a/sound/pci/hda/huawei_wmi_helper.c b/sound/pci/hda/huawei_wmi_helper.c
new file mode 100644
index 000000000000..7c91f914ffba
--- /dev/null
+++ b/sound/pci/hda/huawei_wmi_helper.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Helper functions for Huawei WMI micmute LED;
+ * to be included from codec driver
+ */
+
+#if IS_ENABLED(CONFIG_HUAWEI_WMI)
+#include <linux/platform_data/x86/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 135c0826859b..5431dee40f4f 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_wmi */
+#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,
};
@@ -5765,6 +5769,10 @@ 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[]) {
@@ -5779,7 +5787,9 @@ static const struct hda_fixup alc269_fixups[] = {
{0x1e, 0x411111f0},
{0x21, 0x04211020},
{ }
- }
+ },
+ .chained = true,
+ .chain_id = ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED
},
[ALC269_FIXUP_ASUS_X101_FUNC] = {
.type = HDA_FIXUP_FUNC,
@@ -6611,6 +6621,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x511f, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
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(0x19e5, 0x3200, "Huawei MBX", ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED),
+ SND_PCI_QUIRK(0x19e5, 0x3201, "Huawei MBX", ALC256_FIXUP_HUAWEI_WMI_MICMUTE_LED),
SND_PCI_QUIRK(0x19e5, 0x3204, "Huawei MBXP", ALC256_FIXUP_HUAWEI_MBXP_PINS),
SND_PCI_QUIRK(0x1b7d, 0xa831, "Ordissimo EVE2 ", ALC269VB_FIXUP_ORDISSIMO_EVE2), /* Also known as Malata PC-B1303 */

--
2.17.2
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