ALSA: hda - Add GPIO-based LED support on HP desktop machines

The new HP desktop machines have Realtek codecs and their LEDs are
controlled via GPIO as for many laptop models.  Add similar hooks as
well as in patch_sigmatel.c for controlling LEDs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -85,6 +85,8 @@ struct alc_spec {
 	int mute_led_polarity;
 	hda_nid_t mute_led_nid;
 
+	unsigned int gpio_led; /* used for alc269_fixup_hp_gpio_led() */
+
 	/* hooks */
 	void (*init_hook)(struct hda_codec *codec);
 #ifdef CONFIG_PM
@@ -2741,6 +2743,60 @@ static void alc269_fixup_hp_mute_led_mic2(struct hda_codec *codec,
 	}
 }
 
+/* turn on/off mute LED per vmaster hook */
+static void alc269_fixup_hp_gpio_mute_hook(void *private_data, int enabled)
+{
+	struct hda_codec *codec = private_data;
+	struct alc_spec *spec = codec->spec;
+	unsigned int oldval = spec->gpio_led;
+
+	if (enabled)
+		spec->gpio_led &= ~0x08;
+	else
+		spec->gpio_led |= 0x08;
+	if (spec->gpio_led != oldval)
+		snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DATA,
+				    spec->gpio_led);
+}
+
+/* turn on/off mic-mute LED per capture hook */
+static void alc269_fixup_hp_gpio_mic_mute_hook(struct hda_codec *codec,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct alc_spec *spec = codec->spec;
+	unsigned int oldval = spec->gpio_led;
+
+	if (!ucontrol)
+		return;
+
+	if (ucontrol->value.integer.value[0] ||
+	    ucontrol->value.integer.value[1])
+		spec->gpio_led &= ~0x10;
+	else
+		spec->gpio_led |= 0x10;
+	if (spec->gpio_led != oldval)
+		snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DATA,
+				    spec->gpio_led);
+}
+
+static void alc269_fixup_hp_gpio_led(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) {
+		spec->gen.vmaster_mute.hook = alc269_fixup_hp_gpio_mute_hook;
+		spec->gen.cap_sync_hook = alc269_fixup_hp_gpio_mic_mute_hook;
+		spec->gpio_led = 0;
+		snd_hda_add_verbs(codec, gpio_init);
+	}
+}
+
 static void alc271_hp_gate_mic_jack(struct hda_codec *codec,
 				    const struct hda_fixup *fix,
 				    int action)
@@ -2776,6 +2832,7 @@ enum {
 	ALC269_FIXUP_HP_MUTE_LED,
 	ALC269_FIXUP_HP_MUTE_LED_MIC1,
 	ALC269_FIXUP_HP_MUTE_LED_MIC2,
+	ALC269_FIXUP_HP_GPIO_LED,
 	ALC269_FIXUP_INV_DMIC,
 	ALC269_FIXUP_LENOVO_DOCK,
 	ALC269_FIXUP_PINCFG_NO_HP_TO_LINEOUT,
@@ -2915,6 +2972,10 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc269_fixup_hp_mute_led_mic2,
 	},
+	[ALC269_FIXUP_HP_GPIO_LED] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc269_fixup_hp_gpio_led,
+	},
 	[ALC269_FIXUP_INV_DMIC] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc_fixup_inv_dmic_0x12,
@@ -2955,6 +3016,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1025, 0x029b, "Acer 1810TZ", ALC269_FIXUP_INV_DMIC),
 	SND_PCI_QUIRK(0x1025, 0x0349, "Acer AOD260", ALC269_FIXUP_INV_DMIC),
 	SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
+	SND_PCI_QUIRK(0x103c, 0x18e6, "HP", ALC269_FIXUP_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x1973, "HP Pavilion", ALC269_FIXUP_HP_MUTE_LED_MIC1),
 	SND_PCI_QUIRK(0x103c, 0x1983, "HP Pavilion", ALC269_FIXUP_HP_MUTE_LED_MIC1),
 	SND_PCI_QUIRK_VENDOR(0x103c, "HP", ALC269_FIXUP_HP_MUTE_LED),
@@ -3047,6 +3109,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
 	{.id = ALC271_FIXUP_DMIC, .name = "alc271-dmic"},
 	{.id = ALC269_FIXUP_INV_DMIC, .name = "inv-dmic"},
 	{.id = ALC269_FIXUP_LENOVO_DOCK, .name = "lenovo-dock"},
+	{.id = ALC269_FIXUP_HP_GPIO_LED, .name = "hp-gpio-led"},
 	{}
 };