On Tue, Jul 17, 2012 at 1:12 AM, RAHUL SHARMA <rahul.sharma at samsung.com> wrote: > hi, > > I am adding support for hdmi audio, inside exynos drm hdmi driver. Hdmi audio > is initialized with default parameters. I want to implement the mechanism to > update hdmi registers, whenever audio properties got changed (i2s/spdif). > raedon/r600 drm dirver is polling the audio ip every 100 ms and reconfigure > the hdmi audio block. This is not possible with exynos as all information > cannot be collected from i2s tx registers. It is directly set on wm8994 > connected through i2c. > Possible solution: > 1) drm driver exposing ioctl for setting audio parameters. > 2) alsa driver notifying the change in audio parameters through kernel > notifiers. drm hdmi driver subscribed for the same.
I am certainly not an audio expert, but I am pretty sure something along the lines of solution #2 would be better. I don't think userspace would want to know about some exynos drm specific ioctls in order to make audio work. BR, -R > Please suggest me a good way to implement this. > > regards, > Rahul Sharma. > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel
