Commit 22d7663f authored by Paul Hsieh's avatar Paul Hsieh Committed by Alex Deucher

drm/amd/display: dmcu is blocking due to wrong disable ABM command

[Why]
Second screen to clone/extend mode, driver will send ABM pipe
command to DMCU. Change mode from clone/extend to second
screen only, driver send ABM level command to disable ABM but
this command will not clear ABM pipe data. At this time, change
second screen to PC screen only, driver will send first command
"ABM_LEVEL", it will turn on ABM with incorrect ABM pile so that
DMCU is blocking.

[How]
When driver try to disable ABM, change command from "ABM LEVEL"
to "ABM PIPE" so that it will clear ABM pile data.
Signed-off-by: default avatarPaul Hsieh <Paul.Hsieh@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b21e09d0
......@@ -314,8 +314,8 @@ static bool dce_abm_immediate_disable(struct abm *abm)
/* setDMCUParam_ABMLevel */
REG_UPDATE_2(MASTER_COMM_CMD_REG,
MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_LEVEL_SET,
MASTER_COMM_CMD_REG_BYTE2, MCP_DISABLE_ABM_IMMEDIATELY);
MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_PIPE_SET,
MASTER_COMM_CMD_REG_BYTE1, MCP_DISABLE_ABM_IMMEDIATELY);
/* notifyDMCUMsg */
REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment