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From 2b3af43e1a7b70ce229cb170aafb20c8a439fe29 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Mon, 8 Apr 2019 10:37:44 -0400
Subject: [PATCH 1825/2940] drm/amd/display: Disable cursors before disabling
planes
[Why]
We can't do cursor programming after the planes have been disabled
since there won't be any pipes - leading to lock warnings and the wrong
cursor state being left in the registers.
When we re-enable the planes after the previous cursor state will also
remain if we don't have a cursor plane.
[How]
If we're disabling the planes then do the cursor programming first.
If we're not disabling the planes then do the cursor programming after.
Introduce the amdgpu_dm_commit_cursors helper to avoid code duplication
for both of these cases.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 34 +++++++++++++++++--
1 file changed, 31 insertions(+), 3 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 65c15ae620bd..b2f602cfdd30 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5279,6 +5279,22 @@ static void amdgpu_dm_handle_vrr_transition(struct dm_crtc_state *old_state,
}
}
+static void amdgpu_dm_commit_cursors(struct drm_atomic_state *state)
+{
+ struct drm_plane *plane;
+ struct drm_plane_state *old_plane_state, *new_plane_state;
+ int i;
+
+ /*
+ * TODO: Make this per-stream so we don't issue redundant updates for
+ * commits with multiple streams.
+ */
+ for_each_oldnew_plane_in_state(state, plane, old_plane_state,
+ new_plane_state, i)
+ if (plane->type == DRM_PLANE_TYPE_CURSOR)
+ handle_cursor_update(plane, old_plane_state);
+}
+
static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
struct dc_state *dc_state,
struct drm_device *dev,
@@ -5318,6 +5334,14 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
goto cleanup;
}
+ /*
+ * Disable the cursor first if we're disabling all the planes.
+ * It'll remain on the screen after the planes are re-enabled
+ * if we don't.
+ */
+ if (acrtc_state->active_planes == 0)
+ amdgpu_dm_commit_cursors(state);
+
/* update planes when needed */
for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
struct drm_crtc *crtc = new_plane_state->crtc;
@@ -5514,9 +5538,13 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
mutex_unlock(&dm->dc_lock);
}
- for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i)
- if (plane->type == DRM_PLANE_TYPE_CURSOR)
- handle_cursor_update(plane, old_plane_state);
+ /*
+ * Update cursor state *after* programming all the planes.
+ * This avoids redundant programming in the case where we're going
+ * to be disabling a single plane - those pipes are being disabled.
+ */
+ if (acrtc_state->active_planes)
+ amdgpu_dm_commit_cursors(state);
cleanup:
kfree(bundle);
--
2.17.1
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