2 files changed, 89 insertions, 0 deletions

diff --git a/sound/pci/hda/dell_wmi_helper.c b/sound/pci/hda/dell_wmi_helper.c
new file mode 100644
index 000000000000..9c22f95838ef
--- /dev/null
+++ b/sound/pci/hda/dell_wmi_helper.c
@@ -0,0 +1,76 @@
+/* Helper functions for Dell Mic Mute LED control;
+ * to be included from codec driver
+ */
+
+#if IS_ENABLED(CONFIG_LEDS_DELL_NETBOOKS)
+#include <linux/dell-led.h>
+
+static int dell_led_value;
+static int (*dell_led_set_func)(int, int);
+static void (*dell_old_cap_hook)(struct hda_codec *,
+                                 struct snd_kcontrol *,
+                                 struct snd_ctl_elem_value *);
+
+static void update_dell_wmi_micmute_led(struct hda_codec *codec,
+                                        struct snd_kcontrol *kcontrol,
+                                        struct snd_ctl_elem_value *ucontrol)
+{
+        if (dell_old_cap_hook)
+                dell_old_cap_hook(codec, kcontrol, ucontrol);
+
+        if (!ucontrol || !dell_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? */
+                int val = (ucontrol->value.integer.value[0] || ucontrol->value.integer.value[1]) ? 0 : 1;
+                if (val == dell_led_value)
+                        return;
+                dell_led_value = val;
+                if (dell_led_set_func)
+                        dell_led_set_func(DELL_LED_MICMUTE, dell_led_value);
+        }
+}
+
+
+static void alc_fixup_dell_wmi(struct hda_codec *codec,
+                               const struct hda_fixup *fix, int action)
+{
+        struct alc_spec *spec = codec->spec;
+        bool removefunc = false;
+
+        if (action == HDA_FIXUP_ACT_PROBE) {
+                if (!dell_led_set_func)
+                        dell_led_set_func = symbol_request(dell_app_wmi_led_set);
+                if (!dell_led_set_func) {
+                        codec_warn(codec, "Failed to find dell wmi symbol dell_app_wmi_led_set\n");
+                        return;
+                }
+
+                removefunc = true;
+                if (dell_led_set_func(DELL_LED_MICMUTE, false) >= 0) {
+                        dell_led_value = 0;
+                        if (spec->gen.num_adc_nids > 1)
+                                codec_dbg(codec, "Skipping micmute LED control due to several ADCs");
+                        else {
+                                dell_old_cap_hook = spec->gen.cap_sync_hook;
+                                spec->gen.cap_sync_hook = update_dell_wmi_micmute_led;
+                                removefunc = false;
+                        }
+                }
+
+        }
+
+        if (dell_led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) {
+                symbol_put(dell_app_wmi_led_set);
+                dell_led_set_func = NULL;
+                dell_old_cap_hook = NULL;
+        }
+}
+
+#else /* CONFIG_LEDS_DELL_NETBOOKS */
+static void alc_fixup_dell_wmi(struct hda_codec *codec,
+                               const struct hda_fixup *fix, int action)
+{
+}
+
+#endif /* CONFIG_LEDS_DELL_NETBOOKS */
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2f755adfbe7c..654c8f16d150 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4295,6 +4295,9 @@ static void alc290_fixup_mono_speakers(struct hda_codec *codec,
 /* for hda_fixup_thinkpad_acpi() */
 #include "thinkpad_helper.c"
 
+/* for dell wmi mic mute led */
+#include "dell_wmi_helper.c"
+
 enum {
         ALC269_FIXUP_SONY_VAIO,
         ALC275_FIXUP_SONY_VAIO_GPIO2,
@@ -4359,6 +4362,7 @@ enum {
         ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
         ALC292_FIXUP_TPT440_DOCK,
         ALC283_FIXUP_BXBT2807_MIC,
+        ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -4800,6 +4804,13 @@ static const struct hda_fixup alc269_fixups[] = {
                         { },
                 },
         },
+        [ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED] = {
+                .type = HDA_FIXUP_FUNC,
+                .v.func = alc_fixup_dell_wmi,
+                .chained_before = true,
+                .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
+        },
+
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -4842,10 +4853,12 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
         SND_PCI_QUIRK(0x1028, 0x0606, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
         SND_PCI_QUIRK(0x1028, 0x0608, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
         SND_PCI_QUIRK(0x1028, 0x0609, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
+        SND_PCI_QUIRK(0x1028, 0x0610, "Dell", ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED),
         SND_PCI_QUIRK(0x1028, 0x0613, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
         SND_PCI_QUIRK(0x1028, 0x0614, "Dell Inspiron 3135", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE),
         SND_PCI_QUIRK(0x1028, 0x0615, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
         SND_PCI_QUIRK(0x1028, 0x0616, "Dell Vostro 5470", ALC290_FIXUP_SUBWOOFER_HSJACK),
+        SND_PCI_QUIRK(0x1028, 0x061f, "Dell", ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED),
         SND_PCI_QUIRK(0x1028, 0x0638, "Dell Inspiron 5439", ALC290_FIXUP_MONO_SPEAKERS_HSJACK),
         SND_PCI_QUIRK(0x1028, 0x063f, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
         SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),