[PATCH 0/7] Add a DRM driver to support AI Processing Unit (APU)

[Alexandre Bailon]

This adds a DRM driver that implements communication between the CPU and an
APU. The driver target embedded device that usually run inference using some
prebuilt models. The goal is to provide common infrastructure that could be
re-used to support many accelerators. Both kernel, userspace and firmware tries
to use standard and existing to leverage the development and maintenance effort.
The series implements two platform drivers, one for simulation and another one for
the mt8183 (compatible with mt8365).

For the people interested by the firmware or userspace library,
the sources are available here:
https://gitlab.baylibre.com/baylibre/libapu/libapu

The support of APU has to be upstreamed to libdrm.
Until this is done, you could find the source here:
https://gitlab.baylibre.com/baylibre/libapu/libdrm/-/tree/abailon/main

The driver for mt8183 depends on this series (which is currently blocked):
https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=620429

Alexandre Bailon (5):
  drm: Add support of AI Processor Unit (APU)
  drm/apu: Add memory allocator
  drm/apu: Add support of requests
  drm/apu: Add support of IOMMU
  dt-bindings: Add bidings for mtk,apu-drm

Julien Stephan (2):
  drm/apu: allow platform driver to implement their own mmap function
  drm/apu: Add support for a simulated APU

 .../devicetree/bindings/gpu/mtk,apu-drm.yaml  |  38 ++
 drivers/gpu/drm/Kconfig                       |   2 +
 drivers/gpu/drm/Makefile                      |   1 +
 drivers/gpu/drm/apu/Kconfig                   |  22 +
 drivers/gpu/drm/apu/Makefile                  |  10 +
 drivers/gpu/drm/apu/apu_drv.c                 | 282 +++++++++
 drivers/gpu/drm/apu/apu_gem.c                 | 230 +++++++
 drivers/gpu/drm/apu/apu_internal.h            | 205 ++++++
 drivers/gpu/drm/apu/apu_sched.c               | 592 ++++++++++++++++++
 drivers/gpu/drm/apu/simu_apu.c                | 313 +++++++++
 include/uapi/drm/apu_drm.h                    |  81 +++
 11 files changed, 1776 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/mtk,apu-drm.yaml
 create mode 100644 drivers/gpu/drm/apu/Kconfig
 create mode 100644 drivers/gpu/drm/apu/Makefile
 create mode 100644 drivers/gpu/drm/apu/apu_drv.c
 create mode 100644 drivers/gpu/drm/apu/apu_gem.c
 create mode 100644 drivers/gpu/drm/apu/apu_internal.h
 create mode 100644 drivers/gpu/drm/apu/apu_sched.c
 create mode 100644 drivers/gpu/drm/apu/simu_apu.c
 create mode 100644 include/uapi/drm/apu_drm.h

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2.39.2