[PATCH 1/7] drm/vc4: hdmi: Check that the monitor supports HDMI audio

Stefan Wahren stefan.wahren at i2se.com
Mon Mar 4 15:54:43 UTC 2019


Hi Maxime,

Am 04.03.2019 um 15:52 schrieb Maxime Ripard:
> The current code assumes as soon as the device is an HDMI one that it
> supports an audio sink. However, strictly speaking, this is exposed as a
> separate part of EDID.
>
> This can be checked through the drm_detect_monitor_audio function, so let's
> use it and make sure that we can use the HDMI monitor as an output before
> sending sound.

does the audio output work in the following setup after applying this patch?

VC4 --- HDMI Audio extractor --- Non audio capable monitor

>
> Signed-off-by: Maxime Ripard <maxime.ripard at bootlin.com>



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