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drm/msm/dpu: Disable scaling for unsupported scaler types

Scaling is not implemented for some type of scalers (QSEED2 and RGB) but
it was unintentionally re-enabled with change below. The remaining
condition in dpu_plane_atomic_check_pipe is not enough because it only
checks for length of scaler block (which is present). This patch adds a
additional check for setup_scaler operation.

Fixes: 8f15005783b8 ("drm/msm/dpu: move scaling limitations out of the hw_catalog")
Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/681918/
Link: https://lore.kernel.org/r/20251017-b4-dpu-fixes-v1-3-40ce5993eeb6@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

authored by

Vladimir Lypak and committed by
Dmitry Baryshkov 425da330 23ab0d62

+1 -1
+1 -1
drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
··· 740 740 * We already have verified scaling against platform limitations. 741 741 * Now check if the SSPP supports scaling at all. 742 742 */ 743 - if (!sblk->scaler_blk.len && 743 + if (!(sblk->scaler_blk.len && pipe->sspp->ops.setup_scaler) && 744 744 ((drm_rect_width(&new_plane_state->src) >> 16 != 745 745 drm_rect_width(&new_plane_state->dst)) || 746 746 (drm_rect_height(&new_plane_state->src) >> 16 !=