[PATCH v4 0/1] Fix errors when reporting rotation capability

[Hsiao Chien Sung <shawn.sung@mediatek.com>]

This commit is based on 20231024130048.14749-1-shawn.sung@mediatek.com.

This bug was found when running IGT tests.
For CRTCs that doesn't support rotation should still return
DRM_MODE_ROTATE_0, otherwise the test will fail to restart.
Returns the hardware capabilities accordingly.

Changes in v4:
- Remove rotation property from the driver data since
  OVL rotation property for all chips are the same

Changes in v3:
- Return 0 (not support) if rotation capabilities is not defined
  in the driver data.

Changes in v2:
- Restore DRM_MODE_ROTATE_180 (reflect x + reflect y = rotate 180)
- Define supported rotations in the driver data

Hsiao Chien Sung (1):
  drm/mediatek: Fix errors when reporting rotation capability

 drivers/gpu/drm/mediatek/mtk_disp_drv.h        |  1 +
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c        | 18 ++++++------------
 .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c    |  9 +++++++++
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c    |  1 +
 drivers/gpu/drm/mediatek/mtk_drm_plane.c       |  2 +-
 5 files changed, 18 insertions(+), 13 deletions(-)

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2.39.2