[PATCH] ASoC: hdac_hdmi: Ensuring proper setting of output widget power state

From: Abhijeet Kumar
Date: Fri Jan 12 2018 - 03:32:54 EST


In usecases like hot plug-unplug DP panel or modeset during a playback,
sometimes we observe no audio after codec resets.

During no audio condition, we have noticed that the power state of the
pin or the connector is D3. Optimzing the way we set the power could
mitigate the issue. With this changes the verb is sent to set the power
state and response is received. Thus ensuring power state is set.

Signed-off-by: Abhijeet Kumar <abhijeet.kumar@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
sound/soc/codecs/hdac_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index f3b4f4dfae6a..e24caecf0a4f 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -718,7 +718,7 @@ static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
{
if (get_wcaps(&edev->hdac, nid) & AC_WCAP_POWER) {
if (!snd_hdac_check_power_state(&edev->hdac, nid, pwr_state))
- snd_hdac_codec_write(&edev->hdac, nid, 0,
+ snd_hdac_codec_read(&edev->hdac, nid, 0,
AC_VERB_SET_POWER_STATE, pwr_state);
}
}
--
2.15.1