ALSA: hda - Add mute LED support to Lenovo Ideapad

Lenovo Ideapad with ALC272 has a mute LED that is controlled via
GPIO1.  Add a simple vmaster hook for it.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16373
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 56a8f18..cbeb67d 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4861,8 +4861,42 @@ static void alc_fixup_bass_chmap(struct hda_codec *codec,
        }
 }
 
+/* turn on/off mute LED per vmaster hook */
+static void alc662_led_gpio1_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 &= ~0x01;
+       else
+               spec->gpio_led |= 0x01;
+       if (spec->gpio_led != oldval)
+               snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DATA,
+                                   spec->gpio_led);
+}
+
+static void alc662_fixup_led_gpio1(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, 0x01 },
+               { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x01 },
+               {}
+       };
+
+       if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+               spec->gen.vmaster_mute.hook = alc662_led_gpio1_mute_hook;
+               spec->gpio_led = 0;
+               snd_hda_add_verbs(codec, gpio_init);
+       }
+}
+
 enum {
        ALC662_FIXUP_ASPIRE,
+       ALC662_FIXUP_LED_GPIO1,
        ALC662_FIXUP_IDEAPAD,
        ALC272_FIXUP_MARIO,
        ALC662_FIXUP_CZC_P10T,
@@ -4895,12 +4929,18 @@ static const struct hda_fixup alc662_fixups[] = {
                        { }
                }
        },
+       [ALC662_FIXUP_LED_GPIO1] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = alc662_fixup_led_gpio1,
+       },
        [ALC662_FIXUP_IDEAPAD] = {
                .type = HDA_FIXUP_PINS,
                .v.pins = (const struct hda_pintbl[]) {
                        { 0x17, 0x99130112 }, /* subwoofer */
                        { }
-               }
+               },
+               .chained = true,
+               .chain_id = ALC662_FIXUP_LED_GPIO1,
        },
        [ALC272_FIXUP_MARIO] = {
                .type = HDA_FIXUP_FUNC,