Unlike other compositors X.org allocates a single framebuffer covering the whole screen space. This is not an issue with the single screens, but with the multi-monitor setup 5120x4096 becomes a limiting factor. Check the hardware-bound limitations and lift the FB max size to 16383x16383. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> --- Changes in v3: - Reoder the functions to pull up a fix to the start of the patchset (Abhinav) - Rename the _dpu_crtc_setup_lm_bounds() to _dpu_crtc_check_and_setup_lm_bounds() (Abhinav) - Make dpu_crtc_mode_valid() static. - Link to v2: https://lore.kernel.org/r/20240603-dpu-mode-config-width-v2-0-16af520575a6@xxxxxxxxxx Changes in v2: - Added dpu_crtc_valid() to verify that 2*lm_width limit is enforced (Abhinav) - Link to v1: https://lore.kernel.org/r/20240319-dpu-mode-config-width-v1-0-d0fe6bf81bf1@xxxxxxxxxx --- Dmitry Baryshkov (9): drm/msm/dpu: check for overflow in _dpu_crtc_setup_lm_bounds() drm/msm/dpu: drop dpu_format_check_modified_format drm/msm/dpu: drop dpu_format_populate_layout from dpu_plane_sspp_atomic_update drm/msm/dpu: split dpu_format_populate_layout drm/msm/dpu: move dpu_format_populate_plane_sizes to atomic_check drm/msm/dpu: check for the plane pitch overflow drm/msm/dpu: drop _dpu_crtc_check_and_setup_lm_bounds from atomic_begin drm/msm/dpu: merge MAX_IMG_WIDTH/HEIGHT with DPU_MAX_IMG_WIDTH/HEIGHT drm/msm/dpu: sync mode_config limits to the FB limits in dpu_plane.c drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 32 ++++++-- .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 8 +- drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c | 91 ++++++---------------- drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h | 24 ++---- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 4 +- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h | 2 + drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 10 +-- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 37 +++++---- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h | 3 + drivers/gpu/drm/msm/msm_kms.h | 6 -- 10 files changed, 91 insertions(+), 126 deletions(-) --- base-commit: 03d44168cbd7fc57d5de56a3730427db758fc7f6 change-id: 20240318-dpu-mode-config-width-626d3c7ad52a Best regards, -- Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
