[Intel-gfx] [PATCH 0/5]: Add aspect ratio parsing

Shashank Sharma shashank.sharma at intel.com
Thu Dec 17 05:31:00 PST 2015

Currently DRM framework doesn't parse aspect ratio of a videomode
while converting it from a umode->kmode or viceversa. This causes
modeset of CEA modes with incorrect aspect ratio.

While running HDMI complaince, tests (like 7-27) expect the DUT
to apply the mode as per the VIC, but as driver does not consider
the aspect ratio part while searching a mode from modedb, we end
up setting mode with a wrong VIC, causing the test to fail.  

What this patch set does:
Patch 1-2
- Adds aspect ratio flags in the DRM layer, in form of flags.
- Adds parsing of aspect ratio, during conversion of a umode->kmode
  and viceversa.
- Adds aspect ratio check while finding a mode, during modeset.

Patch 3-5
- Adds some new aspect ratio defined in CEA-861-F specs to
  support HDMI 2.0 displays, in DRM and I915 layer.

Shashank Sharma (5):
  drm: add picture aspect ratio flags
  drm: Add aspect ratio parsing in DRM layer
  video: Add new aspect ratios for HDMI 2.0
  drm: Add flags for new aspect ratios
  drm/i915: Add support for new aspect ratios

 drivers/gpu/drm/drm_modes.c       | 46 +++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_hdmi.c |  6 +++++
 drivers/gpu/drm/i915/intel_sdvo.c |  6 +++++
 drivers/video/hdmi.c              |  4 ++++
 include/linux/hdmi.h              |  2 ++
 include/uapi/drm/drm_mode.h       | 24 +++++++++++++++-----
 6 files changed, 83 insertions(+), 5 deletions(-)


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