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 v5 at [2]: - Patch 1: renamed width/height_fp to max_width/height - Patch 2: no changes - Patch 3: removed possible_crtcs stuff, added cleanup on failure to allocate, removed name in omap_plane struct & plane_id_to_name in omap_plane.c, switched all omap_plane->name to plane->name or omap_plane->id - Patch 4: aligned omap_plane_atomic_duplicate_state the the crtc style - Patch 5: removed glob_obj_lock & reformated global state declaration in omap_drv.h - Patch 6: moved drm_atomic_helper_check_plane_state() from atomic_check() in separate commit, removed zpos change, updated debug messages to be useful, renamed omap_overlay_disable() to omap_overlay_update_state(), added useful comments for omap_overlay_assign() & omap_overlay_update_state(), simplified omap_overlay_assign() & omap_overlay_update_state() for actual use-cases, refactored omap_plane_atomic_check() changes to be cleaner & simpler - Patch 7: no changes (except possible_crtcs print removal) - Patch 8: Reformated omap_plane_atomic_check() & omap_overlay_assign() changes to match previous patches layout
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/ [2] https://lore.kernel.org/all/20210923070701.145377-1-narmstrong@baylibre.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
Neil Armstrong (1): drm/omap: add sanity plane state check
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 | 24 ++ drivers/gpu/drm/omapdrm/omap_fb.c | 33 ++- drivers/gpu/drm/omapdrm/omap_fb.h | 4 +- drivers/gpu/drm/omapdrm/omap_overlay.c | 212 +++++++++++++++ drivers/gpu/drm/omapdrm/omap_overlay.h | 35 +++ drivers/gpu/drm/omapdrm/omap_plane.c | 354 +++++++++++++++++++++---- drivers/gpu/drm/omapdrm/omap_plane.h | 1 + 11 files changed, 830 insertions(+), 59 deletions(-) create mode 100644 drivers/gpu/drm/omapdrm/omap_overlay.c create mode 100644 drivers/gpu/drm/omapdrm/omap_overlay.h
base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82