[PATCH v7 0/1] firmware: mtk: add adsp ipc protocol for SOF

[Allen-KH Cheng]

This patch provides mediatek adsp ipc support for SOF.
ADSP IPC protocol offers (send/recv) interfaces using
mediatek-mailbox APIs.

This patch was tested and confirmed to with SOF fw on MT8195
cherry board.

Based on matthias.bgg/linux.git, v5.18-next/soc
changes since v6:
- rebase to matthias.bgg/linux.git, v5.18-next/soc
- Prefer "GPL" over "GPL v2" for MODULE_LICENSE

changes since v5:
- fix WARNING: modpost: missing MODULE_LICENSE() in drivers/mailbox
  /mtk-adsp-mailbox.o. Add MODULE_LICENSE in the last line.
- Due to WARNING: Missing or malformed SPDX-License-Identifier tag
  in line 1 in checkpatch, we don't remove SPDX-License in line 1.

changes since v4:
- add error message for wrong mbox chan

changes since v3:
- rebase on v5.16-rc8
- update reviewers

changes since v2:
- add out tag for two memory free phases

changes since v1:
- add comments for mtk_adsp_ipc_send and mtk_adsp_ipc_recv
- remove useless MODULE_LICENSE
- change label name to out_free


Allen-KH Cheng (1):
  firmware: mediatek: add adsp ipc protocol interface

 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      | 161 ++++++++++++++++++
 .../linux/firmware/mediatek/mtk-adsp-ipc.h    |  65 +++++++
 6 files changed, 239 insertions(+)
 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 include/linux/firmware/mediatek/mtk-adsp-ipc.h

-- 
2.18.0