[PATCH v3 08/18] HID: steelseries: Add mic mute ALSA mixer control
From: Sriman Achanta
Date: Fri Feb 27 2026 - 18:51:14 EST
Expose the hardware microphone mute button state as a read-only volatile
ALSA boolean mixer control ("Mic Muted"). State is decoded from HID
events reported by the Arctis Nova 7 Gen2 (0xb0 status packet and 0x52
async event) and the Nova Pro (initial status packet). Changes are
propagated to userspace via snd_ctl_notify().
Signed-off-by: Sriman Achanta <srimanachanta@xxxxxxxxx>
---
drivers/hid/hid-steelseries.c | 60 +++++++++++++++++++++++++++++++++--
1 file changed, 57 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c
index 30ee9da1deac..3de8e1555263 100644
--- a/drivers/hid/hid-steelseries.c
+++ b/drivers/hid/hid-steelseries.c
@@ -23,6 +23,7 @@
#define SS_CAP_BATTERY BIT(0)
#define SS_CAP_CHATMIX BIT(1)
+#define SS_CAP_MIC_MUTE BIT(2)
#define SS_QUIRK_STATUS_SYNC_POLL BIT(0)
@@ -56,8 +57,10 @@ struct steelseries_device {
struct snd_card *card;
struct snd_ctl_elem_id chatmix_chat_id;
struct snd_ctl_elem_id chatmix_game_id;
+ struct snd_ctl_elem_id mic_muted_id;
u8 chatmix_chat;
u8 chatmix_game;
+ bool mic_muted;
spinlock_t lock;
bool removed;
@@ -628,7 +631,7 @@ static void steelseries_arctis_nova_7_parse_status(struct steelseries_device *sd
static void steelseries_arctis_nova_7_gen2_parse_status(struct steelseries_device *sd,
u8 *data, int size)
{
- if (size < 6)
+ if (size < 10)
return;
switch (data[0]) {
@@ -638,6 +641,7 @@ static void steelseries_arctis_nova_7_gen2_parse_status(struct steelseries_devic
sd->battery_charging = (data[3] == 0x01);
sd->chatmix_game = data[4];
sd->chatmix_chat = data[5];
+ sd->mic_muted = (data[9] == 0x01);
break;
case 0xb7:
sd->battery_capacity = data[1];
@@ -652,6 +656,9 @@ static void steelseries_arctis_nova_7_gen2_parse_status(struct steelseries_devic
sd->chatmix_game = data[1];
sd->chatmix_chat = data[2];
break;
+ case 0x52:
+ sd->mic_muted = (data[2] == 0x01);
+ break;
}
}
@@ -665,6 +672,7 @@ static void steelseries_arctis_nova_pro_parse_status(struct steelseries_device *
sd->headset_connected = (data[15] == 0x08 || data[15] == 0x02);
sd->battery_capacity = steelseries_map_capacity(data[6], 0x00, 0x08);
sd->battery_charging = (data[15] == 0x02);
+ sd->mic_muted = (data[9] == 0x01);
} else if (data[0] == 0x07 && data[1] == 0x45) {
sd->chatmix_game = data[2];
sd->chatmix_chat = data[3];
@@ -752,14 +760,14 @@ static const struct steelseries_device_info arctis_nova_7p_info = {
static const struct steelseries_device_info arctis_nova_7_gen2_info = {
.sync_interface = 3,
.async_interface = 5,
- .capabilities = SS_CAP_BATTERY | SS_CAP_CHATMIX,
+ .capabilities = SS_CAP_BATTERY | SS_CAP_CHATMIX | SS_CAP_MIC_MUTE,
.request_status = steelseries_arctis_nova_request_status,
.parse_status = steelseries_arctis_nova_7_gen2_parse_status,
};
static const struct steelseries_device_info arctis_nova_pro_info = {
.sync_interface = 4,
- .capabilities = SS_CAP_BATTERY | SS_CAP_CHATMIX,
+ .capabilities = SS_CAP_BATTERY | SS_CAP_CHATMIX | SS_CAP_MIC_MUTE,
.quirks = SS_QUIRK_STATUS_SYNC_POLL,
.request_status = steelseries_arctis_nova_pro_request_status,
.parse_status = steelseries_arctis_nova_pro_parse_status,
@@ -938,6 +946,29 @@ static int steelseries_chatmix_game_get(struct snd_kcontrol *kcontrol,
return 0;
}
+static int steelseries_mic_muted_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+ uinfo->value.integer.step = 1;
+ return 0;
+}
+
+static int steelseries_mic_muted_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct steelseries_device *sd = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sd->lock, flags);
+ ucontrol->value.integer.value[0] = sd->mic_muted;
+ spin_unlock_irqrestore(&sd->lock, flags);
+ return 0;
+}
+
static const struct snd_kcontrol_new steelseries_chatmix_chat_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "ChatMix Chat",
@@ -954,6 +985,14 @@ static const struct snd_kcontrol_new steelseries_chatmix_game_control = {
.get = steelseries_chatmix_game_get,
};
+static const struct snd_kcontrol_new steelseries_mic_muted_control = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Mic Muted",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = steelseries_mic_muted_info,
+ .get = steelseries_mic_muted_get,
+};
+
static int steelseries_snd_register(struct steelseries_device *sd)
{
struct hid_device *hdev = sd->hdev;
@@ -986,6 +1025,16 @@ static int steelseries_snd_register(struct steelseries_device *sd)
sd->chatmix_game_id = kctl->id;
}
+ if (sd->info->capabilities & SS_CAP_MIC_MUTE) {
+ struct snd_kcontrol *kctl;
+
+ kctl = snd_ctl_new1(&steelseries_mic_muted_control, sd);
+ ret = snd_ctl_add(sd->card, kctl);
+ if (ret < 0)
+ goto err_free_card;
+ sd->mic_muted_id = kctl->id;
+ }
+
ret = snd_card_register(sd->card);
if (ret < 0)
goto err_free_card;
@@ -1015,6 +1064,7 @@ static int steelseries_raw_event(struct hid_device *hdev,
bool old_charging;
u8 old_chatmix_chat;
u8 old_chatmix_game;
+ bool old_mic_muted;
bool is_async_interface = false;
if (hdev->product == USB_DEVICE_ID_STEELSERIES_SRWS1)
@@ -1028,6 +1078,7 @@ static int steelseries_raw_event(struct hid_device *hdev,
old_charging = sd->battery_charging;
old_chatmix_chat = sd->chatmix_chat;
old_chatmix_game = sd->chatmix_game;
+ old_mic_muted = sd->mic_muted;
if (hid_is_usb(hdev)) {
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
@@ -1079,6 +1130,9 @@ static int steelseries_raw_event(struct hid_device *hdev,
if (sd->chatmix_game != old_chatmix_game)
snd_ctl_notify(sd->card, SNDRV_CTL_EVENT_MASK_VALUE,
&sd->chatmix_game_id);
+ if (sd->mic_muted != old_mic_muted)
+ snd_ctl_notify(sd->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &sd->mic_muted_id);
}
return 0;
--
2.53.0