From: Paul Hsieh <[email protected]> [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. Change-Id: Ib845fdde7a702b9f97f51367efe71e4b57e965fb Signed-off-by: Paul Hsieh <[email protected]> Reviewed-by: Charlene Liu <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> --- drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c index 2a342eae80fd..01e56f1a9f34 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c @@ -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); -- 2.17.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
