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* [PATCH v8 0/5] drm/microchip: add GFX2D support for SAM9X60 and SAM9X75
@ 2026-08-28 15:52 Cyrille Pitchen
  2026-08-28 15:52 ` [PATCH v8 1/5] dt-bindings: gpu: add bindings for the Microchip GFX2D GPU Cyrille Pitchen
                   ` (3 more replies)
  0 siblings, 4 replies; 8+ messages in thread
From: Cyrille Pitchen @ 2026-08-28 15:52 UTC (permalink / raw)
  To: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard,
	Thomas Zimmermann, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
	Nicolas Ferre, Alexandre Belloni, Claudiu Beznea, Russell King
  Cc: dri-devel, devicetree, linux-kernel, linux-arm-kernel,
	Cyrille Pitchen, Conor Dooley, Manikandan Muralidharan

Hi all,

This series of patches adds GFX2D support.
The GFX2D is a 2D GPU embedded in some Microchip SoCs such as the
SAM9X60 and SAM9X75.

Patches have been developped on top the 'linux-6.12-mchp' branch of the
https://github.com/linux4microchip/linux.git repository and tested on
mainly on a sam9x75-curiosity board and also on a sam9x60-ek board.

Then patches have been rebased on top of the 'drm-misc-next' branch
of the https://gitlab.freedesktop.org/drm/misc/kernel.git repository
for mainlining.

Moreover, the patches have also been rebased on the WIP 'linux-6.18-mchp'
branch of the https://github.com/linux4microchip/linux.git repository
then tested on a sam9x75-curiosity board.

About the tests, the GFX2D driver was used with the M2D (Multi 2D)
library: https://github.com/linux4sam/libm2d

This is an open source library that abstracts 2D GPUs like the Microchip
GFX2D (and later the Vivante GC520UL), providing graphics applications
of libraries with a unified API, inspired from OpenGL but focused on 2D
GPUs. The libm2d library itself relies on the libdrm library to send
commands to the relevant DRM driver in the Linux kernel.

M2D comes with a m2d_test program to run basic unitary tests.
In addition, libm2d has been integrated to two graphics frameworks:
- EGT: https://github.com/linux4sam/egt
- LVGL: https://github.com/lvgl/lvgl/pull/8729

BR,

Cyrille

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@microchip.com>
---
Changes in v8:
- Rebased onto the 'drm-misc-next' branch on 2026-08-28.
- Collected Reviewed-by tags from Manikandan Muralidharan on patches 3
  and 4
- Replaced kzalloc() with kzalloc_obj() in patch 2 as suggested by
  checkpatch.pl.
- Link to v7: https://lore.kernel.org/r/20260209-cpitchen-mainline_gfx2d-v7-0-0c12e64a0950@microchip.com

Changes in v7:
- Rebased onto the 'drm-misc-next' branch on 2026-02-09.
- Rewored patch 2:
  + Reworked the former valid_pixel_format() function into the new
    mchp_gfx2d_valid_buffer_params() function, which is called from both
    the mchp_gfx2d_ioctl_{alloc,import}_buffer() functions and now checks
    the `width` and `stride` parameters in addition to the `format` one.
  + Added the mchp_gfx2d_valid_size() function, which is called from both
    the mchp_gfx2d_ioctl_{alloc,import}_buffer() functions and checks
    (`stride` * `height`) against `size` as suggested by Daniel Stone.
- Link to v6: https://lore.kernel.org/r/20260120-cpitchen-mainline_gfx2d-v6-0-1a16cd1d70b8@microchip.com

Changes in v6:
- Shrank the size of the register set in the device tree from 0x4000
  down to 0x100 (patches 1, 3 and 4).
- Collected Reviewed-by and Acked-by tags from Nicolas Ferre on patches
  1 and 5.
- Rebased onto the 'drm-misc-next' branch on 2026-01-20.
- Link to v5: https://lore.kernel.org/r/20260113-cpitchen-mainline_gfx2d-v5-0-9cdab8fa699b@microchip.com

Changes in v5:
- Fixed compilation issues in patch 2:
  + Included <drm/drm_print.h> from mchp_gfx2d_cmd.c, mchp_gfx2d_drv.c
    and mchp_gfx2d_gem.c.
  + Replaced '.remove_new' with '.remove' in definition of 'struct
    platform_driver mchp_gfx2d_platform_driver' to match the latest
    definition of 'struct platform_driver'.
  + Removed the '.date' member from the definition of 'struct drm_driver
    mchp_gfx2d_drm_driver' since this 'date' member has been removed from
    'struct drm_driver'.
- Fixed typos in doxygen documentations of two functions:
  + mchp_gfx2d_process_completed_commands()
  + mchp_gfx2d_init_command_queue()
- Link to v4: https://lore.kernel.org/r/20260112-cpitchen-mainline_gfx2d-v4-0-f210041ad343@microchip.com

Changes in v4:
- Rebased onto the 'drm-misc-next' branch on 2026-01-12.
- Link to v3: https://lore.kernel.org/r/20251124-cpitchen-mainline_gfx2d-v3-0-607f8c407286@microchip.com

Changes in v3:
- Collected Acked-by tag from Conor Dooley on patch 1
- Rebased onto the 'drm-misc-next' branch on 2025-11-24.
- Link to v2: https://lore.kernel.org/r/20250918-cpitchen-mainline_gfx2d-v2-0-6cfac9d56612@microchip.com

Changes in v2:
- Renamed microchip,gfx2d.yaml into microchip,sam9x60-gfx2d.yaml.
- Removed the 'clock-names' property from the DT bindings.
- Renamed the GPU node from 'gfx2d' to 'gpu' in sam9x{60,7}.dtsi files.
- Link to v1: https://lore.kernel.org/r/20250911-cpitchen-mainline_gfx2d-v1-0-d7fab1a381ee@microchip.com

---
Cyrille Pitchen (5):
      dt-bindings: gpu: add bindings for the Microchip GFX2D GPU
      drm/microchip: add a driver for the Microchip GFX2D GPU
      ARM: dts: microchip: sam9x60: Add GFX2D GPU
      ARM: dts: microchip: sam9x7: Add GFX2D GPU
      ARM: configs: at91_dt_defconfig: enable GFX2D driver

 .../bindings/gpu/microchip,sam9x60-gfx2d.yaml      |   46 +
 MAINTAINERS                                        |   10 +
 arch/arm/boot/dts/microchip/sam9x60.dtsi           |    8 +
 arch/arm/boot/dts/microchip/sam9x7.dtsi            |    8 +
 arch/arm/configs/at91_dt_defconfig                 |    1 +
 drivers/gpu/drm/Kconfig                            |    1 +
 drivers/gpu/drm/Makefile                           |    1 +
 drivers/gpu/drm/microchip/Kconfig                  |   21 +
 drivers/gpu/drm/microchip/Makefile                 |    8 +
 drivers/gpu/drm/microchip/mchp_gfx2d_cmd.c         | 1809 ++++++++++++++++++++
 drivers/gpu/drm/microchip/mchp_gfx2d_cmd.h         |  169 ++
 drivers/gpu/drm/microchip/mchp_gfx2d_drv.c         |  350 ++++
 drivers/gpu/drm/microchip/mchp_gfx2d_drv.h         |  132 ++
 drivers/gpu/drm/microchip/mchp_gfx2d_gem.c         |  264 +++
 drivers/gpu/drm/microchip/mchp_gfx2d_gem.h         |   90 +
 drivers/gpu/drm/microchip/mchp_gfx2d_ioctl.c       |  302 ++++
 drivers/gpu/drm/microchip/mchp_gfx2d_ioctl.h       |   17 +
 include/uapi/drm/microchip_drm.h                   |  286 ++++
 18 files changed, 3523 insertions(+)
---
base-commit: f9c2f70ee41544717b3c209083073db1e21f919b
change-id: 20250911-cpitchen-mainline_gfx2d-6631e9352af7

Best regards,
-- 
Cyrille Pitchen <cyrille.pitchen@microchip.com>



^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2026-09-19 14:25 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-28 15:52 [PATCH v8 0/5] drm/microchip: add GFX2D support for SAM9X60 and SAM9X75 Cyrille Pitchen
2026-08-28 15:52 ` [PATCH v8 1/5] dt-bindings: gpu: add bindings for the Microchip GFX2D GPU Cyrille Pitchen
2026-08-28 15:52 ` [PATCH v8 3/5] ARM: dts: microchip: sam9x60: Add " Cyrille Pitchen
2026-09-19 14:24   ` claudiu beznea
2026-08-28 15:52 ` [PATCH v8 4/5] ARM: dts: microchip: sam9x7: " Cyrille Pitchen
2026-09-19 14:25   ` claudiu beznea
2026-08-28 15:52 ` [PATCH v8 5/5] ARM: configs: at91_dt_defconfig: enable GFX2D driver Cyrille Pitchen
2026-09-19 14:25   ` claudiu beznea

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