aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorDavid Henningsson <david.henningsson@canonical.com>2013-11-06 10:50:44 +0100
committerTakashi Iwai <tiwai@suse.de>2013-11-06 11:08:12 +0100
commitd5b6b65e75ce607c2734227524e11574317a1c1a (patch)
tree313fec24387a68903577b9432aecbe65be7d53de
parent88ec7ae82dff8ca815ff8a31622a2811240b5d0c (diff)
ALSA: hda - Make sure mute LEDs stay on during runtime suspend (Realtek)
Some HP machines with Realtek codecs have mute LEDs connected to VREF pins. However when these go into runtime suspend, the pin powers down and its pin control is disabled, thus disabling the LED too. This patch fixes that issue by making sure that the pin stays in D0 with correct pin control. Cc: stable@kernel.org BugLink: https://bugs.launchpad.net/bugs/1248465 Tested-by: Franz Hsieh <franz.hsieh@canonical.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_realtek.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 02071a58f3f8..f19cd4fcb024 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2959,6 +2959,23 @@ static void alc269_fixup_mic_mute_hook(void *private_data, int enabled)
snd_hda_set_pin_ctl_cache(codec, spec->mute_led_nid, pinval);
}
+/* Make sure the led works even in runtime suspend */
+static unsigned int led_power_filter(struct hda_codec *codec,
+ hda_nid_t nid,
+ unsigned int power_state)
+{
+ struct alc_spec *spec = codec->spec;
+
+ if (power_state != AC_PWRST_D3 || nid != spec->mute_led_nid)
+ return power_state;
+
+ /* Set pin ctl again, it might have just been set to 0 */
+ snd_hda_set_pin_ctl(codec, nid,
+ snd_hda_codec_get_pin_target(codec, nid));
+
+ return AC_PWRST_D0;
+}
+
static void alc269_fixup_hp_mute_led(struct hda_codec *codec,
const struct hda_fixup *fix, int action)
{
@@ -2978,6 +2995,7 @@ static void alc269_fixup_hp_mute_led(struct hda_codec *codec,
spec->mute_led_nid = pin - 0x0a + 0x18;
spec->gen.vmaster_mute.hook = alc269_fixup_mic_mute_hook;
spec->gen.vmaster_mute_enum = 1;
+ codec->power_filter = led_power_filter;
snd_printd("Detected mute LED for %x:%d\n", spec->mute_led_nid,
spec->mute_led_polarity);
break;
@@ -2993,6 +3011,7 @@ static void alc269_fixup_hp_mute_led_mic1(struct hda_codec *codec,
spec->mute_led_nid = 0x18;
spec->gen.vmaster_mute.hook = alc269_fixup_mic_mute_hook;
spec->gen.vmaster_mute_enum = 1;
+ codec->power_filter = led_power_filter;
}
}
@@ -3005,6 +3024,7 @@ static void alc269_fixup_hp_mute_led_mic2(struct hda_codec *codec,
spec->mute_led_nid = 0x19;
spec->gen.vmaster_mute.hook = alc269_fixup_mic_mute_hook;
spec->gen.vmaster_mute_enum = 1;
+ codec->power_filter = led_power_filter;
}
}

Privacy Policy