[PATCH V2 1/2] drm/edid: Add aspect ratios to HDMI 4K modes
Wayne.Lin at amd.com
Mon Dec 2 01:59:25 UTC 2019
> -----Original Message-----
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Sent: Friday, November 29, 2019 11:09 PM
> To: Lin, Wayne <Wayne.Lin at amd.com>
> Cc: dri-devel at lists.freedesktop.org; amd-gfx at lists.freedesktop.org
> Subject: Re: [PATCH V2 1/2] drm/edid: Add aspect ratios to HDMI 4K modes
> On Mon, Nov 18, 2019 at 06:18:31PM +0800, Wayne Lin wrote:
> > [Why]
> > HDMI 2.0 adds aspect ratio attribute to distinguish different 4k
> > modes. According to Appendix E of HDMI 2.0 spec, source should use
> > VSIF to indicate video mode only when the mode is one defined in HDMI
> > 1.4b 4K modes. Otherwise, use AVI infoframes to convey VIC.
> > Current code doesn't take aspect ratio into consideration while
> > constructing avi infoframe. Should modify that.
> > [How]
> > Inherit Ville Syrjälä's work
> > "drm/edid: Prep for HDMI VIC aspect ratio" at
> > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc
> > 2F6jxdmVaTMKEMN69VBFcQ%3D&reserved=0
> > Add picture_aspect_ratio attributes to edid_4k_modes and construct
> > VIC and HDMI_VIC by taking aspect ratio into consideration.
> > v2: Correct missing initializer error at adding aspect ratio of SMPTE
> > mode.
> > Signed-off-by: Wayne Lin <Wayne.Lin at amd.com>
> Our CI didn't complain about anything that looked relevant, so I went ahead an
> pushed these to drm-misc-next.
> Thanks for the patches.
Many thanks for your time.
> Ville Syrjälä
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