linux-kernel - [PATCH v5 0/8] drm/omap: Add virtual-planes support

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Date:   Thu, 23 Sep 2021 09:06:53 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     tomba@...nel.org
Cc:     linux-omap@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, khilman@...libre.com,
        Neil Armstrong <narmstrong@...libre.com>
Subject: [PATCH v5 0/8] drm/omap: Add virtual-planes support

This patchset is the follow-up the v4 patchset from Benoit Parrot at [1].

This patch series adds virtual-plane support to omapdrm driver to allow the use
of display wider than 2048 pixels.

In order to do so we introduce the concept of hw_overlay which can then be
dynamically allocated to a plane. When the requested output width exceed what
be supported by one overlay a second is then allocated if possible to handle
display wider then 2048.

This series replaces an earlier series which was DT based and using statically
allocated resources. 

This implementation is inspired from the work done in msm/disp/mdp5
driver.

Changes since v4 at [1]:
- rebased on v5.15-rc2
- adapted to drm_atomic_get_new/old_plane_state()
- tested on Beagle-x15
- checked for non-regression on Beagle-x15
- removed unused "state" variable in omap_global_state

[1] https://lore.kernel.org/all/20181012201703.29065-1-bparrot@ti.com/

Benoit Parrot (8):
  drm/omap: Add ability to check if requested plane modes can be
    supported
  drm/omap: Add ovl checking funcs to dispc_ops
  drm/omap: introduce omap_hw_overlay
  drm/omap: omap_plane: subclass drm_plane_state
  drm/omap: Add global state as a private atomic object
  drm/omap: dynamically assign hw overlays to planes
  drm/omap: add plane_atomic_print_state support
  drm/omap: Add a 'right overlay' to plane state

 drivers/gpu/drm/omapdrm/Makefile       |   1 +
 drivers/gpu/drm/omapdrm/dss/dispc.c    |  31 +-
 drivers/gpu/drm/omapdrm/dss/dss.h      |   5 +
 drivers/gpu/drm/omapdrm/omap_drv.c     | 189 ++++++++++++-
 drivers/gpu/drm/omapdrm/omap_drv.h     |  28 ++
 drivers/gpu/drm/omapdrm/omap_fb.c      |  33 ++-
 drivers/gpu/drm/omapdrm/omap_fb.h      |   4 +-
 drivers/gpu/drm/omapdrm/omap_overlay.c | 254 +++++++++++++++++
 drivers/gpu/drm/omapdrm/omap_overlay.h |  41 +++
 drivers/gpu/drm/omapdrm/omap_plane.c   | 375 +++++++++++++++++++++----
 drivers/gpu/drm/omapdrm/omap_plane.h   |   1 +
 11 files changed, 903 insertions(+), 59 deletions(-)
 create mode 100644 drivers/gpu/drm/omapdrm/omap_overlay.c
 create mode 100644 drivers/gpu/drm/omapdrm/omap_overlay.h

-- 
2.25.1