struct drm_simple_display_pipe was meant to simplify simple DRM drivers, but instead adds an extra wrapper around normal DRM atomic helper setup. As noted in Documentation/gpu/todo.rst, remaining users should be converted to regular atomic helpers and stop depending on the simple-KMS interfaces.
This series converts the following drivers: - arcpgu - aspeed - mcde - pl111 - gm12u320 - repaper - tve200 - xen frontend Each patch replaces drm_simple_display_pipe_init() with explicit primary plane, CRTC and encoder setup, and moves the old simple-pipe callbacks into regular plane and CRTC helper callbacks named according to local driver conventions. The conversions preserve helper behavior that used to be implicit in drm_simple_kms_helper.c, including plane-state validation, CRTC primary-plane checks, affected-plane propagation, framebuffer prepare handling, and existing event/vblank flow where applicable. Result is less helper indirection and more explicit driver-side atomic wiring, with no remaining simple-KMS dependency in these drivers. Except for gm12u320, no hardware testing was performed. This series is based on drm-next-2026-06-27. AI usage disclosure: - I wrote the first two commits myself. The remaining patches were completed with assistance from AI tools. - AI tools were also used to review the code and suggest code changes for the DRM atomic conversion. Thanks, Ze Huang Signed-off-by: Ze Huang <[email protected]> --- Changes in v2: - common changes: - create upcast helpers - use 'commit' as name of struct drm_atomic_commit in atomic helpers - improve control flow in *_crtc_helper_atomic_check() and *_plane_helper_atomic_check() - Moved page-flip/vblank event handling out of plane update paths and into CRTC atomic_flush(), using atomic_flush and disable paths for mcde, pl111 and tve200 - arcpgu: - remove reduntant mod_supported helper - change obsolete mode field to crtc->state->mode - mcde: - drop attach of unused encoder - tve200: - reorder connector/bridge attach - xen: - change possible_crtcs mask to 0 - Link to v1: https://patch.msgid.link/20260705-drm-simple-kms-removal-v1-0-b4e1ca053...@oss.qualcomm.com --- Ze Huang (8): drm/arcpgu: replace struct drm_simple_display_pipe with regular atomic helpers drm/aspeed: replace struct drm_simple_display_pipe with regular atomic helpers drm/mcde: replace struct drm_simple_display_pipe with regular atomic helpers drm/pl111: replace struct drm_simple_display_pipe with regular atomic helpers drm/gm12u320: replace struct drm_simple_display_pipe with regular atomic helpers drm/repaper: replace struct drm_simple_display_pipe with regular atomic helpers drm/tve200: replace struct drm_simple_display_pipe with regular atomic helpers drm/xen: replace struct drm_simple_display_pipe with regular atomic helpers drivers/gpu/drm/aspeed/aspeed_gfx.h | 11 +- drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c | 187 ++++++++++++++++------- drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 3 +- drivers/gpu/drm/mcde/mcde_display.c | 251 ++++++++++++++++++++----------- drivers/gpu/drm/mcde/mcde_drm.h | 8 +- drivers/gpu/drm/mcde/mcde_drv.c | 8 +- drivers/gpu/drm/pl111/pl111_display.c | 202 ++++++++++++++++++------- drivers/gpu/drm/pl111/pl111_drm.h | 5 +- drivers/gpu/drm/pl111/pl111_drv.c | 3 +- drivers/gpu/drm/tiny/arcpgu.c | 179 ++++++++++++++++------ drivers/gpu/drm/tiny/gm12u320.c | 132 +++++++++++++--- drivers/gpu/drm/tiny/repaper.c | 132 ++++++++++++---- drivers/gpu/drm/tve200/tve200_display.c | 217 +++++++++++++++++--------- drivers/gpu/drm/tve200/tve200_drm.h | 6 +- drivers/gpu/drm/tve200/tve200_drv.c | 12 +- drivers/gpu/drm/xen/xen_drm_front.h | 6 +- drivers/gpu/drm/xen/xen_drm_front_kms.c | 175 +++++++++++++++------ 17 files changed, 1107 insertions(+), 430 deletions(-) --- base-commit: 3696d07837d1df13a5603d77f667685e7dfb3c53 change-id: 20260704-drm-simple-kms-removal-01a031c6a129 Best regards, -- Ze Huang <[email protected]>
