soc: mediatek: mtk-cmdq: Add cmdq_pkt_poll_addr() function

Browse source

Add cmdq_pkt_poll_addr function to support CMDQ user making
an instruction for polling a specific address of hardware rigster
to check the value with or without mask.

POLL is a legacy operation in GCE, so it does not support SPR and
CMDQ_CODE_LOGIC. To support polling the register address which doesn't
have the subsys id, CMDQ users need to make an instruction with GPR and
CMDQ_CODE_MASK operation to move the register address to be poll into GPR.
Then users can make an POLL instruction with GPR to poll the register
address assigned in previous instruction.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240307013458.23550-4-jason-jh.lin@mediatek.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

...

This commit is contained in:

Jason-JH.Lin 2024-03-07 09:34:57 +08:00 • committed by AngeloGioacchino Del Regno

parent 263801f8e5

commit 400e2fa805

No known key found for this signature in database

GPG key ID: 9A3604CFAD978478

2 changed files with 70 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

49

drivers/soc/mediatek/mtk-cmdq-helper.c

View file

21

include/linux/soc/mediatek/mtk-cmdq.h

View file