Eric Anholt <eric@xxxxxxxxxx> writes: > The HDMI encoder IP embeds all needed blocks to output audio, with a > custom DAI called MAI moving audio between the two parts of the HDMI > core. This driver now exposes a sound card to let users stream audio > to their display. > > Using the hdmi-codec driver has been considered here, but MAI meant > having to significantly rework hdmi-codec, and it would have left > little shared code with the I2S mode anyway. > > The encoder requires that the audio be SPDIF-formatted frames only, > which alsalib will format-convert for us. > > This patch is the combined work of Eric Anholt (initial register setup > with a separate dmaengine driver and using simple-audio-card) and > Boris Brezillon (moving it all into HDMI, massive debug to get it > actually working), and which Eric has the permission to release. > > v2: Drop "-audio" from sound card name, since that's already implied > (suggestion by Boris) On IRC, Mark Brown disclaimed responsibility for reviewing this code, so I've merged it to drm-misc-next.
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