This reverts commits ddab8bd788f5 ("drm/amd/display: Fix two cursor duplication
when using overlay") and e7d9560aeae5 ("Revert "drm/amd/display: Fix overlay
validation by considering cursors"").tl;dr ChromeOS uses the atomic interface for everything except the cursor. This is incorrect and forces amdgpu to disable some hardware features. Let's revert the ChromeOS-specific workaround in mainline and allow the Chrome team to keep it internally in their own tree. See [1] for more details. This patch is an alternative to [2], which added ChromeOS detection. [1]: https://lore.kernel.org/amd-gfx/JIQ_93_cHcshiIDsrMU1huBzx9P9LVQxucx8hQArpQu7Wk5DrCl_vTXj_Q20m_L-8C8A5dSpNcSJ8ehfcCrsQpfB5QG_Spn14EYkH9chtg0=@emersion.fr/ [2]: https://lore.kernel.org/amd-gfx/20211011151609.452132-1-cont...@emersion.fr/ Signed-off-by: Simon Ser <cont...@emersion.fr> Cc: Alex Deucher <alexander.deuc...@amd.com> Cc: Harry Wentland <hwent...@amd.com> Cc: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com> Cc: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> Cc: Rodrigo Siqueira <rodrigo.sique...@amd.com> Cc: Sean Paul <seanp...@chromium.org> Fixes: ddab8bd788f5 ("drm/amd/display: Fix two cursor duplication when using overlay") Fixes: e7d9560aeae5 ("Revert "drm/amd/display: Fix overlay validation by considering cursors"") --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 51 ------------------- 1 file changed, 51 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 20065a145851..014c5a9fe461 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -10628,53 +10628,6 @@ static int add_affected_mst_dsc_crtcs(struct drm_atomic_state *state, struct drm } #endif -static int validate_overlay(struct drm_atomic_state *state) -{ - int i; - struct drm_plane *plane; - struct drm_plane_state *new_plane_state; - struct drm_plane_state *primary_state, *overlay_state = NULL; - - /* Check if primary plane is contained inside overlay */ - for_each_new_plane_in_state_reverse(state, plane, new_plane_state, i) { - if (plane->type == DRM_PLANE_TYPE_OVERLAY) { - if (drm_atomic_plane_disabling(plane->state, new_plane_state)) - return 0; - - overlay_state = new_plane_state; - continue; - } - } - - /* check if we're making changes to the overlay plane */ - if (!overlay_state) - return 0; - - /* check if overlay plane is enabled */ - if (!overlay_state->crtc) - return 0; - - /* find the primary plane for the CRTC that the overlay is enabled on */ - primary_state = drm_atomic_get_plane_state(state, overlay_state->crtc->primary); - if (IS_ERR(primary_state)) - return PTR_ERR(primary_state); - - /* check if primary plane is enabled */ - if (!primary_state->crtc) - return 0; - - /* Perform the bounds check to ensure the overlay plane covers the primary */ - if (primary_state->crtc_x < overlay_state->crtc_x || - primary_state->crtc_y < overlay_state->crtc_y || - primary_state->crtc_x + primary_state->crtc_w > overlay_state->crtc_x + overlay_state->crtc_w || - primary_state->crtc_y + primary_state->crtc_h > overlay_state->crtc_y + overlay_state->crtc_h) { - DRM_DEBUG_ATOMIC("Overlay plane is enabled with hardware cursor but does not fully cover primary plane\n"); - return -EINVAL; - } - - return 0; -} - /** * amdgpu_dm_atomic_check() - Atomic check implementation for AMDgpu DM. * @dev: The DRM device @@ -10856,10 +10809,6 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, goto fail; } - ret = validate_overlay(state); - if (ret) - goto fail; - /* Add new/modified planes */ for_each_oldnew_plane_in_state_reverse(state, plane, old_plane_state, new_plane_state, i) { ret = dm_update_plane_state(dc, state, plane, -- 2.33.0
