Re: [PATCH 7/9] drm/edid: Expose mandatory stereo modes for HDMI sinks

On Mon, Sep 16, 2013 at 7:35 PM, Damien Lespiau damien.lespiau@intel.com wrote:

I think it makes quite a bit of sense to have the "underlying 2D mode" in the mode structure as this 2d mode is relevant to the 3d mode:

• HDMI stereo modes are defined based on the unerdlying 2D mode. (eg the extra, non-mandatory, modes in the EDID have their definitions pointing to CEA 2D VICs)
• HDMI VIC infoframe: one needs to indicate the CEA VIC of this underlying 2d mode when setting the stereo mode.

Note that in the future, we also want to allow framebuffers with 2 distinct buffers for right and left.

I think this is the right approach. To extract a bit of common code we could add a bunch more flags to drm_mode_set_crtcinfo so that drivers don't need to compute the blow-up 3d modes (including the blank in between the 2 left/right frames) themselves.

Cheers, Daniel