drm/amd/display: disable PSR/ABM before destroy DMCU struct

[Why]
1. DMCU is not running on some platform but driver still send ABM
   command. It may cause assert due to DMCU is not alive.
2. To make sure PSR disable when driver disable

[How]
1. Add dmcu_is_running in ABM struct, driver can check this flag to
   determine driver should send ABM command or not.
2. Send PSR disable command when destroy PSR

Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 5bed89547410ec0e2308d42ceb39cf7ec2b48ec9..2a34447112e9c8766e296df22bf1398a3688e6fe 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -657,6 +657,9 @@ static void dcn20_init_hw(struct dc *dc)
        if (dmcu != NULL)
                dmcu->funcs->dmcu_init(dmcu);
 
+       if (abm != NULL && dmcu != NULL)
+               abm->dmcu_is_running = dmcu->funcs->is_dmcu_initialized(dmcu);
+
        /* power AFMT HDMI memory TODO: may move to dis/en output save power*/
        REG_WRITE(DIO_MEM_PWR_CTRL, 0);