drm/amd/display: fix cursor offset on rotation 180

Cursor gets clipped off in the middle of the screen with hw rotation
180. Fix a miscalculation of cursor offset when it's placed near the
edges in the pipe split case.

Cursor bugs with hw rotation were reported on AMD issue tracker:
https://gitlab.freedesktop.org/drm/amd/-/issues/2247

The issues on rotation 270 was fixed by:
https://lore.kernel.org/amd-gfx/20221118125935.4013669-22-Brian.Chang@amd.com/
that partially addressed the rotation 180 too. So, this patch is the
final bits for rotation 180.

Reported-by: Xaver Hugl <xaver.hugl@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Fixes: 9d84c7ef8a87 ("drm/amd/display: Correct cursor position on horizontal mirror")
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index c4d65ee..acc7e40 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -3624,7 +3624,7 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx)
                                                (int)hubp->curs_attr.width || pos_cpy.x
                                                <= (int)hubp->curs_attr.width +
                                                pipe_ctx->plane_state->src_rect.x) {
-                                               pos_cpy.x = temp_x + viewport_width;
+                                               pos_cpy.x = 2 * viewport_width - temp_x;
                                        }
                                }
                        } else {