ALSA: hda - Enable Thinkpad mute/micmute LEDs for Realtek

Same as we already have for Conexant. Right now it's only enabled
for one machine.

Tested-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 81 insertions, 2 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 01bf812455a2..02071a58f3f8 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -829,7 +829,11 @@ static inline void alc_shutup(struct hda_codec *codec)
                 snd_hda_shutup_pins(codec);
 }
 
-#define alc_free        snd_hda_gen_free
+static void alc_free(struct hda_codec *codec)
+{
+        snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_FREE);
+        snd_hda_gen_free(codec);
+}
 
 #ifdef CONFIG_PM
 static void alc_power_eapd(struct hda_codec *codec)
@@ -3527,6 +3531,74 @@ static void alc290_fixup_mono_speakers(struct hda_codec *codec,
                 snd_hda_override_wcaps(codec, 0x03, 0);
 }
 
+#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
+
+#include <linux/thinkpad_acpi.h>
+
+static int (*led_set_func)(int, bool);
+
+static void update_tpacpi_mute_led(void *private_data, int enabled)
+{
+        if (led_set_func)
+                led_set_func(TPACPI_LED_MUTE, !enabled);
+}
+
+static void update_tpacpi_micmute_led(struct hda_codec *codec,
+                                      struct snd_ctl_elem_value *ucontrol)
+{
+        if (!ucontrol || !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];
+                led_set_func(TPACPI_LED_MICMUTE, !val);
+        }
+}
+
+static void alc_fixup_thinkpad_acpi(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 (!led_set_func)
+                        led_set_func = symbol_request(tpacpi_led_set);
+                if (!led_set_func) {
+                        snd_printk(KERN_WARNING "Failed to find thinkpad-acpi symbol tpacpi_led_set\n");
+                        return;
+                }
+
+                removefunc = true;
+                if (led_set_func(TPACPI_LED_MUTE, false) >= 0) {
+                        spec->gen.vmaster_mute.hook = update_tpacpi_mute_led;
+                        removefunc = false;
+                }
+                if (led_set_func(TPACPI_LED_MICMUTE, false) >= 0) {
+                        if (spec->gen.num_adc_nids > 1)
+                                snd_printdd("Skipping micmute LED control due to several ADCs");
+                        else {
+                                spec->gen.cap_sync_hook = update_tpacpi_micmute_led;
+                                removefunc = false;
+                        }
+                }
+        }
+
+        if (led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) {
+                symbol_put(tpacpi_led_set);
+                led_set_func = NULL;
+        }
+}
+
+#else
+
+static void alc_fixup_thinkpad_acpi(struct hda_codec *codec,
+                                  const struct hda_fixup *fix, int action)
+{
+}
+
+#endif
+
 enum {
         ALC269_FIXUP_SONY_VAIO,
         ALC275_FIXUP_SONY_VAIO_GPIO2,
@@ -3570,6 +3642,7 @@ enum {
         ALC282_FIXUP_ASUS_TX300,
         ALC283_FIXUP_INT_MIC,
         ALC290_FIXUP_MONO_SPEAKERS,
+        ALC269_FIXUP_THINKPAD_ACPI,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -3867,6 +3940,12 @@ static const struct hda_fixup alc269_fixups[] = {
                 .chained = true,
                 .chain_id = ALC269_FIXUP_DELL3_MIC_NO_PRESENCE,
         },
+        [ALC269_FIXUP_THINKPAD_ACPI] = {
+                .type = HDA_FIXUP_FUNC,
+                .v.func = alc_fixup_thinkpad_acpi,
+                .chained = true,
+                .chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
+        },
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -3950,7 +4029,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
         SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK),
         SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
         SND_PCI_QUIRK(0x17aa, 0x2212, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
-        SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+        SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad", ALC269_FIXUP_THINKPAD_ACPI),
         SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
         SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
         SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC283_FIXUP_INT_MIC),