[PATCH 06/14] drm/amd/display: Modify plane removal sequence to avoid hangs.

[Alan Liu]

From: Dillon Varone <dillon.var...@amd.com>

Reviewed-by: Aric Cyr <aric....@amd.com>
Acked-by: Alan Liu <haoping....@amd.com>
Signed-off-by: Dillon Varone <dillon.var...@amd.com>
---
 .../gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c  |  2 +-
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c      | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index b467c0376027..bc9dd48258e3 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -107,7 +107,7 @@ void dcn10_lock_all_pipes(struct dc *dc,
                 * (un)locking. Also skip if pipe is disabled.
                 */
                if (pipe_ctx->top_pipe ||
-                   !pipe_ctx->stream || !pipe_ctx->plane_state ||
+                   !pipe_ctx->stream ||
                    !tg->funcs->is_tg_enabled(tg))
                        continue;
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
index 33d74ecd893d..a665af19f201 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c
@@ -931,10 +931,6 @@ void hubp2_set_blank_regs(struct hubp *hubp, bool blank)
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
        uint32_t blank_en = blank ? 1 : 0;
 
-       REG_UPDATE_2(DCHUBP_CNTL,
-                       HUBP_BLANK_EN, blank_en,
-                       HUBP_TTU_DISABLE, blank_en);
-
        if (blank) {
                uint32_t reg_val = REG_READ(DCHUBP_CNTL);
 
@@ -947,9 +943,13 @@ void hubp2_set_blank_regs(struct hubp *hubp, bool blank)
                         */
                        REG_WAIT(DCHUBP_CNTL,
                                        HUBP_NO_OUTSTANDING_REQ, 1,
-                                       1, 200);
+                                       1, 100000);
                }
        }
+
+       REG_UPDATE_2(DCHUBP_CNTL,
+                       HUBP_BLANK_EN, blank_en,
+                       HUBP_TTU_DISABLE, 0);
 }
 
 void hubp2_cursor_set_position(
-- 
2.25.1