[0/7] drm/msm: rework the ties between KMS and GPU parts of the driver

Message

Dmitry Baryshkov April 13, 2025, 4:32 p.m. UTC

Currently the KMS and GPU parts of the msm driver are pretty much
intertwined. It is impossible to register a KMS-only device and
registering a GPU-only DRM device requires modifying the DT.  Not to
mention that binding the GPU-only device creates an interim platform
devices, which complicates IOMMU setup.

Rework the driver:
- Make it possible to disable KMS parts (if MDP4, MDP5 and DPU drivers
  are disabled).
- Register GPU-only devices without an interim platform device.
- Add module param that makes msm driver register GPU and KMS devices
  separately.

Signed-off-by: Dmitry Baryshkov <[e-mail]>
---
Dmitry Baryshkov (7):
      drm/msm: move wq handling to KMS code
      drm/msm: move helper calls to msm_kms.c
      drm/msm: make it possible to disable KMS-related code.
      drm/msm: bail out late_init_minor() if it is not a GPU device
      drm/msm: rearrange symbol selection
      drm/msm: rework binding of Imageon GPUs
      drm/msm: enable separate binding of GPU and display devices

 drivers/gpu/drm/msm/Kconfig                |  34 ++++--
 drivers/gpu/drm/msm/Makefile               |  16 +--
 drivers/gpu/drm/msm/adreno/adreno_device.c |  39 ++-----
 drivers/gpu/drm/msm/dp/dp_debug.c          |   4 +
 drivers/gpu/drm/msm/msm_debugfs.c          |  97 ++++++++++-------
 drivers/gpu/drm/msm/msm_drv.c              | 168 +++++++++++++++++++----------
 drivers/gpu/drm/msm/msm_drv.h              |  13 ++-
 drivers/gpu/drm/msm/msm_kms.c              |  36 ++++++-
 drivers/gpu/drm/msm/msm_kms.h              |  25 +++++
 9 files changed, 285 insertions(+), 147 deletions(-)
---
base-commit: a4e1d05abd6847ba11edf46734efecec86a1fe2c
change-id: 20250411-msm-gpu-split-2701e49e40f0

Best regards,