commit 364f957f3eefafd0963f140b68bec314cc05f07a
author Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Wed Mar 21 11:40:01 2018 +0000
committer Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Fri Jul 13 15:36:57 2018 +0100
tree 14ce23329c3a79625fe2babaa5badd8035323613
parent 62e2d2c8a6cf240ccc44c847d8e20f56e4b12492

drm_hwcomposer: Add writeback connector support

Writeback connector is a special case of connector, which can be
linked to a CRTC in order to get the result of the composition back to
a memory buffer. This had not been merged to the mainline kernel yet,
latest version of the kernel patches could be found here [1].

[1] https://lists.freedesktop.org/archives/dri-devel/2018-February/167703.html

Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Reviewed-by: Sean Paul <seanpaul at chromium.org>

drmconnector.h

diff --git a/drmconnector.h b/drmconnector.h
index 99b89d5..3bafd62 100644
--- a/drmconnector.h
+++ b/drmconnector.h
@@ -46,6 +46,7 @@
 
   bool internal() const;
   bool external() const;
+  bool writeback() const;
   bool valid_type() const;
 
   int UpdateModes();
@@ -58,6 +59,9 @@
 
   const DrmProperty &dpms_property() const;
   const DrmProperty &crtc_id_property() const;
+  const DrmProperty &writeback_pixel_formats() const;
+  const DrmProperty &writeback_fb_id() const;
+  const DrmProperty &writeback_out_fence() const;
 
   const std::vector<DrmEncoder *> &possible_encoders() const {
     return possible_encoders_;
@@ -88,6 +92,9 @@
 
   DrmProperty dpms_property_;
   DrmProperty crtc_id_property_;
+  DrmProperty writeback_pixel_formats_;
+  DrmProperty writeback_fb_id_;
+  DrmProperty writeback_out_fence_;
 
   std::vector<DrmEncoder *> possible_encoders_;
 };