[PATCH v6 0/3] This patches provide ADSP IPC support for MT8195

[allen-kh.cheng]

Mediatek ADSP IPC is used to send notification or short message between
processors with dsp.·

It will place the message to the share buffer and will access the ADSP
mailbox registers to kick dsp.

Two mailboxes used to send notification or short message between processors
with dsp

changes since v5:
- remove some redundant code

changes since v4:
- use switch ... case in adsp_ipc_recv
- add error handling path for chan_name pointer
- refine some code to be concise

changes since v3:
- reorder MTK_ADSP_IPC_MBOX config
- remove some redundant code
- remove lock in mtk-adsp-mailbox

changes since v2:
- separate adsp_mailbox into two instances

changes since v1:
- fix dt_binding_check error


Allen-KH Cheng (3):
  dt-bindings: mediatek: add adsp-mbox document
  firmware: mediatek: add adsp ipc protocol interface
  mailbox: mediatek: add support for adsp mailbox controller

 .../bindings/mailbox/mtk,adsp-mbox.yaml       |  52 +++++
 drivers/firmware/Kconfig                      |   1 +
 drivers/firmware/Makefile                     |   1 +
 drivers/firmware/mediatek/Kconfig             |   9 +
 drivers/firmware/mediatek/Makefile            |   2 +
 drivers/firmware/mediatek/mtk-adsp-ipc.c      | 138 ++++++++++++++
 drivers/mailbox/Kconfig                       |   7 +
 drivers/mailbox/Makefile                      |   2 +
 drivers/mailbox/mtk-adsp-mailbox.c            | 178 ++++++++++++++++++
 .../linux/firmware/mediatek/mtk-adsp-ipc.h    |  70 +++++++
 10 files changed, 460 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml
 create mode 100644 drivers/firmware/mediatek/Kconfig
 create mode 100644 drivers/firmware/mediatek/Makefile
 create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
 create mode 100644 drivers/mailbox/mtk-adsp-mailbox.c
 create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h

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2.18.0