From 0c8c5bdd7eaf291b6f727e98506fb68acee3a4cc Mon Sep 17 00:00:00 2001 From: Leo Li Date: Wed, 11 Sep 2024 09:06:50 -0400 Subject: [PATCH] drm/amd/display: Add all planes on CRTC to state for overlay cursor [Why] DC has a special commit path for native cursor, which use the built-in cursor pipe within DCN planes. This update path does not require all enabled planes to be added to the list of surface updates sent to DC. This is not the case for overlay cursor; it uses the same path as MPO commits. This update path requires all enabled planes to be added to the list of surface updates sent to DC. Otherwise, DC will disable planes not inside the list. [How] If overlay cursor is needed, add all planes on the same CRTC as this cursor to the atomic state. This is already done for non-cursor planes (MPO), just before the added lines. Fixes: 1b04dcca4fb1 ("drm/amd/display: Introduce overlay cursor mode") Closes: https://lore.kernel.org/lkml/f68020a3-c413-482d-beb2-5432d98a1d3e@amd.com Reviewed-by: Harry Wentland Signed-off-by: Leo Li Tested-by: Mikhail Gavrilov Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 +++++++++++ 1 file changed, 11 insertions(+) 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 2a2b789917fc..c51ba90159c3 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -11409,6 +11409,17 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, drm_dbg(dev, "Failed to determine cursor mode\n"); goto fail; } + + /* + * If overlay cursor is needed, DC cannot go through the + * native cursor update path. All enabled planes on the CRTC + * need to be added for DC to not disable a plane by mistake + */ + if (dm_new_crtc_state->cursor_mode == DM_CURSOR_OVERLAY_MODE) { + ret = drm_atomic_add_affected_planes(state, crtc); + if (ret) + goto fail; + } } /* Remove exiting planes if they are modified */