[PATCH v2 0/8] drm/msm: Attach a driver to GMU

[Akhil P Oommen]

With the introduction of sync_state in the genpd framework, any consumer
device of GCC and GPUCC which is not bound to a driver will result in
bootup warnings like below:

[   24.362666] gcc-kaanapali 100000.clock-controller: sync_state() pending due to 3d37000.gmu
[   24.371210] gxclkctl-kaanapali 3d64000.clock-controller: sync_state() pending due to 3d37000.gmu
[   24.380268] gpucc-kaanapali 3d90000.clock-controller: sync_state() pending due to 3d37000.gmu

To silence these warnings and also to have a proper state in driver core,
attach a driver to the GMU and set it up as a component device for the drm
master device.

The first few patches are preparatory fixes. And the later patches
introduces a driver for GMU device and a couple of minor refactors.

I have ignored most of the T-b/R-b tags as there is significant code
churn in v2 when compared to v1.

Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Reorder patches to move fixes to the front (Dmitry)
- New patch to remove unused gpu_ops paramer (Dmitry)
- New patch to consolidate msm_gpu_probe into msm_drv_probe
- Drop patch#2 in the v1 series as it doesn't make sense after rebase
- A new patch to pass around DRM private data via devres
- Retrieve GPU data from master's private data during GMU bind
- Move devfreq initialiation post GPU/GMU bind to avoid handling thermal
  mitigation while GMU device is not bound to the driver.
- Ensure GPU is queicent before GMU unbind.
- Link to v1: https://lore.kernel.org/r/20260513-gmu-sync-state-fix-v1-0-6e33e6aa9b4f@xxxxxxxxxxxxxxxx

---
Akhil P Oommen (6):
      drm/msm/adreno: Fix invalid drvdata typecast in adreno_remove()
      drm/msm/adreno/a6xx: Mark cxpd device_link as stateless
      drm/msm: Keep DRM private data separate from GPU drvdata
      drm/msm/adreno: Simplify adreno_probe()
      drm/msm: Always use component model for standalone GPU
      drm/msm: Attach a driver to the GMU

Haitao Xu (2):
      drm/msm: Remove dead gpu_ops parameter from msm_drm_init/uninit
      drm/msm: Consolidate msm_gpu_probe into msm_drv_probe

 drivers/gpu/drm/msm/adreno/a6xx_gmu.c      | 117 +++++++++++++++++++---------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c      |  19 +----
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h      |   3 -
 drivers/gpu/drm/msm/adreno/adreno_device.c |  40 ++++++----
 drivers/gpu/drm/msm/adreno/adreno_gpu.h    |   2 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c    |   8 +-
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c   |   3 +-
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c   |   9 +--
 drivers/gpu/drm/msm/dp/dp_display.c        |   4 +-
 drivers/gpu/drm/msm/dsi/dsi.c              |   4 +-
 drivers/gpu/drm/msm/hdmi/hdmi.c            |   4 +-
 drivers/gpu/drm/msm/msm_drv.c              | 119 +++++++++++++++--------------
 drivers/gpu/drm/msm/msm_drv.h              |   9 ++-
 drivers/gpu/drm/msm/msm_gpu.c              |   3 -
 drivers/gpu/drm/msm/msm_gpu.h              |   1 +
 drivers/gpu/drm/msm/msm_gpu_devfreq.c      |   5 ++
 drivers/gpu/drm/msm/msm_kms.c              |  17 ++---
 17 files changed, 205 insertions(+), 162 deletions(-)
---
base-commit: 5fed66a6fde4dcc6a63ecec6f32e1a331dc4e1a4
change-id: 20260511-gmu-sync-state-fix-bc6b2d809371

Best regards,
-- 
Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>