drm/msm/mdp5: Disable pingpong autorefresh at tearcheck init

kholk · robclark · commit 33b2b91e3430 · 2021-04-09T12:02:35.000-07:00
If pp autorefresh is up (from bootloader splash), we will surely get vblank and pp timeouts. Ensure it is turned off. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org> Link: https://lore.kernel.org/r/20210406214726.131534-4-marijn.suijten@somainline.org Signed-off-by: Rob Clark <robdclark@chromium.org>
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_cmd_encoder.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_cmd_encoder.c
@@ -67,6 +67,7 @@ static int pingpong_tearcheck_setup(struct drm_encoder *encoder,
 	mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_THRESH(pp_id),
 			MDP5_PP_SYNC_THRESH_START(4) |
 			MDP5_PP_SYNC_THRESH_CONTINUE(4));
+	mdp5_write(mdp5_kms, REG_MDP5_PP_AUTOREFRESH_CONFIG(pp_id), 0x0);
 
 	return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -67,6 +67,7 @@ static int pingpong_tearcheck_setup(struct drm_encoder *encoder,`
`67`	`67`	`mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_THRESH(pp_id),`
`68`	`68`	`MDP5_PP_SYNC_THRESH_START(4) \|`
`69`	`69`	`MDP5_PP_SYNC_THRESH_CONTINUE(4));`
	`70`	`+ mdp5_write(mdp5_kms, REG_MDP5_PP_AUTOREFRESH_CONFIG(pp_id), 0x0);`
`70`	`71`
`71`	`72`	`return 0;`
`72`	`73`	`}`