+/* Hook to update amp GPIO4 for automute */
+static void alc280_hp_gpio4_automute_hook(struct hda_codec *codec,
+ struct hda_jack_callback *jack)
+{
+ struct alc_spec *spec = codec->spec;
+
+ snd_hda_gen_hp_automute(codec, jack);
+ /* mute_led_polarity is set to 0, so we pass inverted value here */
+ alc_update_gpio_led(codec, 0x10, !spec->gen.hp_jack_present);
+}
+
+/* Manage GPIOs for HP EliteBook Folio 9480m.
+ *
+ * GPIO4 is the headphone amplifier power control
+ * GPIO3 is the audio output mute indicator LED
+ */
+
+static void alc280_fixup_hp_9480m(struct hda_codec *codec,
+ const struct hda_fixup *fix,
+ int action)
+{
+ struct alc_spec *spec = codec->spec;
+ static const struct hda_verb gpio_init[] = {
+ { 0x01, AC_VERB_SET_GPIO_MASK, 0x18 },
+ { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x18 },
+ {}
+ };
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+ /* Set the hooks to turn the headphone amp on/off
+ * as needed
+ */
+ spec->gen.vmaster_mute.hook = alc_fixup_gpio_mute_hook;
+ spec->gen.hp_automute_hook = alc280_hp_gpio4_automute_hook;
+
+ /* The GPIOs are currently off */
+ spec->gpio_led = 0;
+
+ /* GPIO3 is connected to the output mute LED,
+ * high is on, low is off
+ */
+ spec->mute_led_polarity = 0;
+ spec->gpio_mute_led_mask = 0x08;
+
+ /* Initialize GPIO configuration */
+ snd_hda_add_verbs(codec, gpio_init);
+ }
+}
+