[v2,00/61] drm/plane: Convert all drivers to atomic_create_state and remove reset

This is a follow-up to the bridge reset removal series, and part of a
larger effort to remove the reset hook from all KMS objects.

The plane reset hook is overloaded: it is called both at probe time
to create the initial software state and during suspend/resume to
reset hardware and software state. These two roles have different
requirements, and the reset hook is not fallible, making error
handling difficult for the initial state allocation path.

While reset has the semantics to reset both the software and hardware
state, the vast majority of implementations and all the helpers only
reset the software state, making them equivalent to
atomic_create_state in practice. The atomic_create_state hook makes
this explicit: it only allocates and initializes a pristine state
without any side effect, and returns the state pointer or an ERR_PTR
on failure.

This series first adds the necessary infrastructure in the simple-kms
and GEM atomic helpers, then converts all 51 plane drivers tree-wide
from the reset hook to atomic_create_state. The conversions were done
using a combination of Coccinelle semantic patches and manual
adjustments. Once all drivers are converted, the old helpers and the
reset hook itself are removed from struct drm_plane_funcs.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Changes in v2:
- Rebase on latest drm-misc-next tag
- Fix sashiko reviews
- Fix atmel-hlcdc breakage
- Link to v1: https://lore.kernel.org/r/20260709-drm-no-more-plane-reset-v1-0-302d986fe5f0@kernel.org

---
Maxime Ripard (61):
      drm/simple-kms: Add create_plane_state hook
      drm/gem-atomic-helper: Create drm_gem_create_shadow_plane_state()
      drm/gem-atomic-helper: Convert simple-kms shadow helpers to create_plane_state
      drm/gem-atomic-helper: Switch DRM_GEM_SHADOW_PLANE_FUNCS to atomic_create_state
      drm/gem-atomic-helper: Remove drm_gem_reset_shadow_plane()
      drm/sysfb: Convert to atomic_create_state
      drm/simple-kms: Switch to atomic_create_state
      drm/ssd130x: Convert to atomic_create_state
      drm/st7920: Convert to atomic_create_state
      drm/appletbdrm: Convert to atomic_create_state
      drm/vkms: Convert to atomic_create_state
      drm/gem-atomic-helper: Remove __drm_gem_reset_shadow_plane()
      drm/amdgpu: Convert to atomic_create_state
      drm/hdlcd: Convert to atomic_create_state
      drm/fsl-dcu: Convert to atomic_create_state
      drm/hisilicon/kirin: Convert to atomic_create_state
      drm/imx/dc: Convert to atomic_create_state
      drm/imx/dcss: Convert to atomic_create_state
      drm/ingenic: Convert to atomic_create_state
      drm/kmb: Convert to atomic_create_state
      drm/logicvc: Convert to atomic_create_state
      drm/loongson: Convert to atomic_create_state
      drm/meson: Convert to atomic_create_state
      drm/msm/mdp4: Convert to atomic_create_state
      drm/lcdif: Convert to atomic_create_state
      drm/mxsfb: Convert to atomic_create_state
      drm/qxl: Convert to atomic_create_state
      drm/rockchip: Convert to atomic_create_state
      drm/sprd: Convert to atomic_create_state
      drm/sti: Convert to atomic_create_state
      drm/stm: Convert to atomic_create_state
      drm/sun4i: sun8i: Convert to atomic_create_state
      drm/tests: kunit: Convert to atomic_create_state
      drm/tilcdc: Convert to atomic_create_state
      drm/vboxvideo: Convert to atomic_create_state
      drm/verisilicon: Convert to atomic_create_state
      drm/virtio: Convert to atomic_create_state
      drm/xlnx: Convert to atomic_create_state
      drm/atomic-state-helper: Remove drm_atomic_helper_plane_reset()
      drm/amdgpu_dm: Convert to atomic_create_state
      drm/komeda: Convert to atomic_create_state
      drm/malidp: Convert to atomic_create_state
      drm/armada: Convert to atomic_create_state
      drm/atmel-hlcdc: Drop spurious csc_init call from reset
      drm/atmel-hlcdc: Convert to atomic_create_state
      drm/exynos: Convert to atomic_create_state
      drm/imx/ipuv3: Convert to atomic_create_state
      drm/mediatek: Convert to atomic_create_state
      drm/msm/dpu1: Convert to atomic_create_state
      drm/msm/mdp5: Convert to atomic_create_state
      drm/nouveau: Convert to atomic_create_state
      drm/omap: Convert to atomic_create_state
      drm/rcar-du: Convert to atomic_create_state
      drm/rz-du: Convert to atomic_create_state
      drm/shmobile: Convert to atomic_create_state
      drm/sun4i: layer: Convert to atomic_create_state
      drm/vc4: Convert to atomic_create_state
      drm/vmwgfx: Convert to atomic_create_state
      drm/atomic-state-helper: Remove __drm_atomic_helper_plane_reset()
      drm/tegra: Convert to atomic_create_state
      drm/plane: Remove reset

 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c           |   2 +-
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c    |  26 +++---
 drivers/gpu/drm/arm/display/komeda/komeda_plane.c  |  18 ++--
 drivers/gpu/drm/arm/hdlcd_crtc.c                   |   2 +-
 drivers/gpu/drm/arm/malidp_planes.c                |  18 ++--
 drivers/gpu/drm/armada/armada_overlay.c            |  39 ++++----
 drivers/gpu/drm/armada/armada_plane.c              |  15 ++--
 drivers/gpu/drm/armada/armada_plane.h              |   2 +-
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c    |  33 +++----
 drivers/gpu/drm/drm_atomic_state_helper.c          |  41 ---------
 drivers/gpu/drm/drm_gem_atomic_helper.c            | 100 +++++++++++----------
 drivers/gpu/drm/drm_mode_config.c                  |   4 +-
 drivers/gpu/drm/drm_simple_kms_helper.c            |  11 +--
 drivers/gpu/drm/exynos/exynos_drm_plane.c          |  22 ++---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c        |   2 +-
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c    |   2 +-
 drivers/gpu/drm/imx/dc/dc-plane.c                  |   2 +-
 drivers/gpu/drm/imx/dcss/dcss-plane.c              |   2 +-
 drivers/gpu/drm/imx/ipuv3/ipuv3-plane.c            |  19 ++--
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c          |   2 +-
 drivers/gpu/drm/ingenic/ingenic-ipu.c              |   2 +-
 drivers/gpu/drm/kmb/kmb_plane.c                    |   2 +-
 drivers/gpu/drm/logicvc/logicvc_layer.c            |   2 +-
 drivers/gpu/drm/loongson/lsdc_plane.c              |   2 +-
 drivers/gpu/drm/mediatek/mtk_plane.c               |  22 ++---
 drivers/gpu/drm/meson/meson_overlay.c              |   2 +-
 drivers/gpu/drm/meson/meson_plane.c                |   2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c          |  18 ++--
 drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c         |   2 +-
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c         |  16 ++--
 drivers/gpu/drm/mxsfb/lcdif_kms.c                  |   2 +-
 drivers/gpu/drm/mxsfb/mxsfb_kms.c                  |   2 +-
 drivers/gpu/drm/nouveau/dispnv50/wndw.c            |  15 ++--
 drivers/gpu/drm/omapdrm/omap_plane.c               |  13 ++-
 drivers/gpu/drm/qxl/qxl_display.c                  |   4 +-
 drivers/gpu/drm/renesas/rcar-du/rcar_du_plane.c    |  15 ++--
 drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c      |  15 ++--
 drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c       |  15 ++--
 drivers/gpu/drm/renesas/shmobile/shmob_drm_plane.c |  15 ++--
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c        |   2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c       |   2 +-
 drivers/gpu/drm/sitronix/st7920.c                  |  12 +--
 drivers/gpu/drm/solomon/ssd130x.c                  |  12 +--
 drivers/gpu/drm/sprd/sprd_dpu.c                    |   2 +-
 drivers/gpu/drm/sti/sti_cursor.c                   |   2 +-
 drivers/gpu/drm/sti/sti_gdp.c                      |   2 +-
 drivers/gpu/drm/sti/sti_hqvdp.c                    |   2 +-
 drivers/gpu/drm/stm/ltdc.c                         |   2 +-
 drivers/gpu/drm/sun4i/sun4i_layer.c                |  12 ++-
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c             |   2 +-
 drivers/gpu/drm/sun4i/sun8i_vi_layer.c             |   2 +-
 drivers/gpu/drm/sysfb/drm_sysfb_helper.h           |   4 +-
 drivers/gpu/drm/sysfb/drm_sysfb_modeset.c          |  30 +++++--
 drivers/gpu/drm/tegra/plane.c                      |  28 +++---
 drivers/gpu/drm/tests/drm_kunit_helpers.c          |   2 +-
 drivers/gpu/drm/tilcdc/tilcdc_plane.c              |   2 +-
 drivers/gpu/drm/tiny/appletbdrm.c                  |  12 +--
 drivers/gpu/drm/vboxvideo/vbox_mode.c              |   2 +-
 drivers/gpu/drm/vc4/vc4_plane.c                    |  15 ++--
 drivers/gpu/drm/verisilicon/vs_cursor_plane.c      |   2 +-
 drivers/gpu/drm/verisilicon/vs_plane.c             |  14 ++-
 drivers/gpu/drm/verisilicon/vs_plane.h             |   2 +-
 drivers/gpu/drm/verisilicon/vs_primary_plane.c     |   2 +-
 drivers/gpu/drm/virtio/virtgpu_plane.c             |   2 +-
 drivers/gpu/drm/vkms/vkms_plane.c                  |  15 ++--
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c                |  17 ++--
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h                |   2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c                |   4 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c               |   4 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c               |   4 +-
 drivers/gpu/drm/xlnx/zynqmp_kms.c                  |   2 +-
 include/drm/drm_atomic_state_helper.h              |   3 -
 include/drm/drm_gem_atomic_helper.h                |  13 +--
 include/drm/drm_plane.h                            |  12 ---
 include/drm/drm_simple_kms_helper.h                |   1 +
 75 files changed, 343 insertions(+), 433 deletions(-)
---
base-commit: bd4f284df04d76fd65e57141cb1e6e7a49e4c3cb
change-id: 20260629-drm-no-more-plane-reset-04950f42e07f

Best regards,