[PATCH] ASoC: hdmi-codec: Get ELD in before reporting plugged event
From: Cheng-Yi Chiang <cychiang@chromium.org>
Date: 2020-11-17 11:26:34
Also in:
alsa-devel, linux-mediatek, linux-rockchip, lkml
Subsystem:
sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
In plugged callback, ELD should be updated from display driver so that user space can query information from ELD immediately after receiving jack plugged event. When jack is unplugged, clear ELD buffer so that user space does not get obsolete information of unplugged HDMI. Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org> --- sound/soc/codecs/hdmi-codec.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 403d4c6a49a8..f0e0e1836000 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c@@ -692,10 +692,16 @@ static void plugged_cb(struct device *dev, bool plugged) { struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); - if (plugged) + if (plugged) { + if (hcp->hcd.ops->get_eld) { + hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data, + hcp->eld, sizeof(hcp->eld)); + } hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); - else + } else { + memset(hcp->eld, 0, sizeof(hcp->eld)); hdmi_codec_jack_report(hcp, 0); + } } static int hdmi_codec_set_jack(struct snd_soc_component *component,
--
2.29.2.299.gdc1121823c-goog
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