From: Tony Cheng <tony.ch...@amd.com>

Change-Id: I7140155a62c2a25ba888cb02e93ecff5df54f61e
Signed-off-by: Tony Cheng <tony.ch...@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang....@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
 .../drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c  | 30 +++++++++++++++++-----
 1 file changed, 23 insertions(+), 7 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 ece8c96f3636..41a6fa507982 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
@@ -828,7 +828,7 @@ static void reset_front_end_for_pipe(
        /* TODO: build stream pipes group id. For now, use stream otg
         * id as pipe group id
         */
-       tree_cfg = &context->res_ctx.mpc_tree[pipe_ctx->mpc_idx];
+       tree_cfg = &dc->current_context->res_ctx.mpc_tree[pipe_ctx->mpc_idx];
 
        if (pipe_ctx->top_pipe == NULL)
                dcn10_delete_mpc_tree(mpc, tree_cfg);
@@ -1523,6 +1523,8 @@ static void update_dchubp_dpp(
        struct tg_color black_color = {0};
        struct dcn10_mpc *mpc = TO_DCN10_MPC(dc->res_pool->mpc);
 
+       struct pipe_ctx *cur_pipe_ctx = 
&dc->current_context->res_ctx.pipe_ctx[pipe_ctx->pipe_idx];
+
        /* depends on DML calculation, DPP clock value may change dynamically */
        enable_dppclk(
                dc->ctx,
@@ -1566,6 +1568,7 @@ static void update_dchubp_dpp(
         */
        pipe_ctx->mpc_idx = pipe_ctx->tg->inst;
        tree_cfg = &context->res_ctx.mpc_tree[pipe_ctx->mpc_idx];
+
        /* enable when bottom pipe is present and
         * it does not share a surface with current pipe
         */
@@ -1576,21 +1579,29 @@ static void update_dchubp_dpp(
                pipe_ctx->scl_data.lb_params.alpha_en = 0;
                tree_cfg->mode = TOP_PASSTHRU;
        }
-       if (!pipe_ctx->top_pipe) {
+       if (!pipe_ctx->top_pipe && !cur_pipe_ctx->bottom_pipe) {
                /* primary pipe, set mpc tree index 0 only */
                tree_cfg->num_pipes = 1;
                tree_cfg->opp_id = pipe_ctx->tg->inst;
                tree_cfg->dpp[0] = pipe_ctx->pipe_idx;
                tree_cfg->mpcc[0] = pipe_ctx->pipe_idx;
-               dcn10_set_mpc_tree(mpc, tree_cfg);
-       } else {
-               /* TODO: add position is hard code to 1 for now
-                * If more than 2 pipes are supported, calculate position
-                */
+       }
+
+       if (!cur_pipe_ctx->top_pipe && !pipe_ctx->top_pipe) {
+
+               if (!cur_pipe_ctx->bottom_pipe)
+                       dcn10_set_mpc_tree(mpc, tree_cfg);
+
+       } else if (!cur_pipe_ctx->top_pipe && pipe_ctx->top_pipe) {
+
                dcn10_add_dpp(mpc, tree_cfg,
                        pipe_ctx->pipe_idx, pipe_ctx->pipe_idx, 1);
+       } else {
+               /* nothing to be done here */
+               ASSERT(cur_pipe_ctx->top_pipe && pipe_ctx->top_pipe);
        }
 
+
        color_space = pipe_ctx->stream->public.output_color_space;
        color_space_to_black_color(dc, color_space, &black_color);
        dcn10_set_mpc_background_color(mpc, pipe_ctx->pipe_idx, &black_color);
@@ -1641,13 +1652,18 @@ static void program_all_pipe_in_tree(
                                        pipe_ctx->mi, &context->watermarks, 
ref_clk_mhz);
                        lock_otg_master_update(dc->ctx, pipe_ctx->tg->inst);
                }
+
                pipe_ctx->tg->dlg_otg_param.vready_offset = 
pipe_ctx->pipe_dlg_param.vready_offset;
                pipe_ctx->tg->dlg_otg_param.vstartup_start = 
pipe_ctx->pipe_dlg_param.vstartup_start;
                pipe_ctx->tg->dlg_otg_param.vupdate_offset = 
pipe_ctx->pipe_dlg_param.vupdate_offset;
                pipe_ctx->tg->dlg_otg_param.vupdate_width = 
pipe_ctx->pipe_dlg_param.vupdate_width;
                pipe_ctx->tg->dlg_otg_param.signal =  pipe_ctx->stream->signal;
+
                pipe_ctx->tg->funcs->program_global_sync(
                                pipe_ctx->tg);
+
+
+
                update_dchubp_dpp(dc, pipe_ctx, context);
        }
 
-- 
2.11.0

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