[RFC v4 0/4] Mediatek MT8173 CMDQ support

[HS Liao <hs.liao@mediatek.com>]

Hi,

This is Mediatek MT8173 Command Queue(CMDQ) driver. The CMDQ is used
to help read/write registers with critical time limitation, such as
updating display configuration during the vblank. It controls Global
Command Engine (GCE) hardware to achieve this requirement.

These patches have a build dependency on top of v4.6-rc1.

Changes since v3:
 - rebase to v4.6-rc1
 - pass both arm and arm64 arch compilation
 - fix bug of removing free task list in v3
 - marchal return error code
 - use offset instead of physical address
 - centralize release flow
 - add "suspend/resume protection" patch
 - add queue_work() in cmdq_auto_release() to prevent no more flush
   or interrupt to consume waiting tasks
 - remove some debug or redundant code
 - rewrite some code to shrink code size

Best regards,
HS Liao

HS Liao (4):
  dt-bindings: soc: Add documentation for the MediaTek GCE unit
  CMDQ: Mediatek CMDQ driver
  arm64: dts: mt8173: Add GCE node
  CMDQ: suspend/resume protection

 .../devicetree/bindings/soc/mediatek/gce.txt       |   34 +
 arch/arm64/boot/dts/mediatek/mt8173.dtsi           |    8 +
 drivers/soc/mediatek/Kconfig                       |   10 +
 drivers/soc/mediatek/Makefile                      |    1 +
 drivers/soc/mediatek/mtk-cmdq.c                    | 1997 ++++++++++++++++++++
 include/soc/mediatek/cmdq.h                        |  197 ++
 6 files changed, 2247 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/gce.txt
 create mode 100644 drivers/soc/mediatek/mtk-cmdq.c
 create mode 100644 include/soc/mediatek/cmdq.h

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1.7.9.5