All of lore.kernel.org
 help / color / mirror / Atom feed
* [v5 0/2] Add Colorspace connector property interface
@ 2018-12-11 18:14 Uma Shankar
  2018-12-11 18:14 ` [v5 1/2] drm: Add colorspace connector property Uma Shankar
                   ` (5 more replies)
  0 siblings, 6 replies; 12+ messages in thread
From: Uma Shankar @ 2018-12-11 18:14 UTC (permalink / raw)
  To: intel-gfx, dri-devel
  Cc: ville.syrjala, jonas, hansverk, Uma Shankar, maarten.lankhorst

This patch series creates a new connector property to program
colorspace to sink devices. Modern sink devices support more
than 1 type of colorspace like 601, 709, BT2020 etc. This helps
to switch based on content type which is to be displayed. The
decision lies with compositors as to in which scenarios, a
particular colorspace will be picked.

This will be helpful mostly to switch to higher gamut colorspaces
like BT2020 when the media content is encoded as BT2020. Thereby
giving a good visual experience to users.

The expectation from userspace is that it should parse the EDID
and get supported colorspaces. Use this property and switch to the
one supported. Kernel will not give the supported colorspaces since
this is panel dependent and our current property infrastructure is
not supporting it.

Basically the expectation from userspace is:
 - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink
   colorspace
 - Set this new property to let the sink know what it
   converted the CRTC output to.
 - This property is just to inform sink what colorspace
   source is trying to drive.

Have tested this using xrandr by using below command:
xrandr --output HDMI2 --set "Colorspace" "BT2020_rgb"

v2: Addressed Ville and Maarten's review comments. Merged the 2nd
and 3rd patch into one common logical patch.

v3: Removed Adobe references from enum definitions as per
Ville, Hans Verkuil and Jonas Karlman suggestions. Changed
default to an unset state where driver will assign the colorspace
when not chosen by user, suggested by Ville and Maarten. Addressed
other misc review comments from Maarten. Split the changes to
have separate colorspace property for DP and HDMI.

v4: Addressed Chris and Ville's review comments, and created a
common colorspace property for DP and HDMI, filtered the list
based on the colorspaces supported by the respective protocol
standard. Handled the default case more efficiently.

v5: Modified the colorspace property creation helper to take
platform specific enum list based on the capabilities of the
platform as suggested by Shashank. With this there is no need
for segregation between DP and HDMI.

Uma Shankar (2):
  drm: Add colorspace connector property
  drm/i915: Attach colorspace property and enable modeset

 drivers/gpu/drm/drm_atomic_uapi.c      |  4 ++
 drivers/gpu/drm/drm_connector.c        | 82 ++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_atomic.c    |  1 +
 drivers/gpu/drm/i915/intel_connector.c | 63 ++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h       |  1 +
 drivers/gpu/drm/i915/intel_hdmi.c      | 18 ++++++++
 include/drm/drm_connector.h            | 17 +++++++
 include/uapi/drm/drm_mode.h            | 33 ++++++++++++++
 8 files changed, 219 insertions(+)

-- 
1.9.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2018-12-27 15:11 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-12-11 18:14 [v5 0/2] Add Colorspace connector property interface Uma Shankar
2018-12-11 18:14 ` [v5 1/2] drm: Add colorspace connector property Uma Shankar
2018-12-15  2:45   ` kbuild test robot
2018-12-20 11:57   ` Sharma, Shashank
2018-12-20 14:48     ` Shankar, Uma
2018-12-11 18:14 ` [v5 2/2] drm/i915: Attach colorspace property and enable modeset Uma Shankar
2018-12-20 17:32   ` Sharma, Shashank
2018-12-27 15:11     ` Shankar, Uma
2018-12-11 18:31 ` ✗ Fi.CI.CHECKPATCH: warning for Add Colorspace connector property interface (rev5) Patchwork
2018-12-11 18:34 ` ✗ Fi.CI.SPARSE: " Patchwork
2018-12-11 18:50 ` ✓ Fi.CI.BAT: success " Patchwork
2018-12-11 21:44 ` ✓ Fi.CI.IGT: " Patchwork

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.