On Mon, 15 May 2017 14:29:20 +0200, Pierre-Louis Bossart wrote: > > Hi, > Does anyone know the reason why the Intel/HDaudio HDMI layers use > SND_JACK_AVOUT as a jack type? Because it's really an audio output on the video jack? > This value is composite and ends up > having the side effect of sending 2 independent input events to > userspace (SW_LINEOUT_INSERT and SW_VIDEOOUT_INSERT) and confusing the > Android logic which deals with wired accessories. Shouldn't we use > just SND_JACK_VIDEOOUT instead? What is the reason or rationale behind > the use of LINEOUT for HDMI/DP jack events? The LINEOUT combo is just an implementation detail, and user-space is supposed to interpret these two combo as a single AV detection. It's similar like the headset. But I agree that it's a bit confusing as of now. Since there is only one user of SND_JACK_VIDEOOUT (omap/rx51) and the driver also assumes it being AV jack (the control is named as "AV Jack"), I guess we can merge these two into a single one. Our jack interface is clearly for audio, so AV is equivalent with video, after all. thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
