1 files changed, 36 insertions, 0 deletions
diff --git a/sound/pci/hda/ideapad_hotkey_led_helper.c b/sound/pci/hda/ideapad_hotkey_led_helper.c
new file mode 100644
index 000000000000..c10d97964d49
--- /dev/null
+++ b/sound/pci/hda/ideapad_hotkey_led_helper.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Ideapad helper functions for Lenovo Ideapad LED control,
+ * It should be included from codec driver.
+ */
+
+#if IS_ENABLED(CONFIG_IDEAPAD_LAPTOP)
+
+#include <linux/acpi.h>
+#include <linux/leds.h>
+
+static bool is_ideapad(struct hda_codec *codec)
+{
+	return (codec->core.subsystem_id >> 16 == 0x17aa) &&
+	       (acpi_dev_found("LHK2019") || acpi_dev_found("VPC2004"));
+}
+
+static void hda_fixup_ideapad_acpi(struct hda_codec *codec,
+				   const struct hda_fixup *fix, int action)
+{
+	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+		if (!is_ideapad(codec))
+			return;
+		snd_hda_gen_add_mute_led_cdev(codec, NULL);
+		snd_hda_gen_add_micmute_led_cdev(codec, NULL);
+	}
+}
+
+#else /* CONFIG_IDEAPAD_LAPTOP */
+
+static void hda_fixup_ideapad_acpi(struct hda_codec *codec,
+				   const struct hda_fixup *fix, int action)
+{
+}
+
+#endif /* CONFIG_IDEAPAD_LAPTOP */