Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
From: Allen-KH Cheng <Allen-KH.Cheng@xxxxxxxxxxxx>
Some of mediatek processors contain
the Tensilica HiFix DSP for audio processing.
The communication between Host CPU and DSP firmware is
taking place using a shared memory area for message passing.
ADSP IPC protocol offers (send/recv) interfaces using
mediatek-mailbox APIs.
We use two mbox channels to implement a request-reply protocol.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@xxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>
Reviewed-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
Reviewed-by: YC Hung <yc.hung@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
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
Gentle ping for this one, as it's getting stale... and it's ready.
To add context, this driver is *really* necessary, as support for it
is added in the MT8195 ASoC SOF driver as a platform device [1], and the
necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
Cheers,
Angelo
