Revert "drm/amd/display: Remove v_startup workaround for dcn3+"

This reverts commit 3a31e8b89b7240d9a17ace8a1ed050bdcb560f9e.

We still need to call dcn20_adjust_freesync_v_startup() for older DCN3+
ASICs. Otherwise, it can cause DP to HDMI 2.1 PCONs to fail to light up.

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2809
Reviewed-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
index 8afda5e..d01bc2d 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
@@ -1099,6 +1099,10 @@ void dcn20_calculate_dlg_params(struct dc *dc,
                context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz =
                                                pipes[pipe_idx].clks_cfg.dppclk_mhz * 1000;
                context->res_ctx.pipe_ctx[i].pipe_dlg_param = pipes[pipe_idx].pipe.dest;
+               if (context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
+                       dcn20_adjust_freesync_v_startup(
+                               &context->res_ctx.pipe_ctx[i].stream->timing,
+                               &context->res_ctx.pipe_ctx[i].pipe_dlg_param.vstartup_start);
 
                pipe_idx++;
        }
@@ -1927,7 +1931,6 @@ static bool dcn20_validate_bandwidth_internal(struct dc *dc, struct dc_state *co
        int vlevel = 0;
        int pipe_split_from[MAX_PIPES];
        int pipe_cnt = 0;
-       int i = 0;
        display_e2e_pipe_params_st *pipes = kzalloc(dc->res_pool->pipe_count * sizeof(display_e2e_pipe_params_st), GFP_ATOMIC);
        DC_LOGGER_INIT(dc->ctx->logger);
 
@@ -1951,15 +1954,6 @@ static bool dcn20_validate_bandwidth_internal(struct dc *dc, struct dc_state *co
        dcn20_calculate_wm(dc, context, pipes, &pipe_cnt, pipe_split_from, vlevel, fast_validate);
        dcn20_calculate_dlg_params(dc, context, pipes, pipe_cnt, vlevel);
 
-       for (i = 0; i < dc->res_pool->pipe_count; i++) {
-               if (!context->res_ctx.pipe_ctx[i].stream)
-                       continue;
-               if (context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
-                       dcn20_adjust_freesync_v_startup(
-                               &context->res_ctx.pipe_ctx[i].stream->timing,
-                               &context->res_ctx.pipe_ctx[i].pipe_dlg_param.vstartup_start);
-       }
-
        BW_VAL_TRACE_END_WATERMARKS();
 
        goto validate_out;
@@ -2232,7 +2226,6 @@ bool dcn21_validate_bandwidth_fp(struct dc *dc,
        int vlevel = 0;
        int pipe_split_from[MAX_PIPES];
        int pipe_cnt = 0;
-       int i = 0;
        display_e2e_pipe_params_st *pipes = kzalloc(dc->res_pool->pipe_count * sizeof(display_e2e_pipe_params_st), GFP_ATOMIC);
        DC_LOGGER_INIT(dc->ctx->logger);
 
@@ -2261,15 +2254,6 @@ bool dcn21_validate_bandwidth_fp(struct dc *dc,
        dcn21_calculate_wm(dc, context, pipes, &pipe_cnt, pipe_split_from, vlevel, fast_validate);
        dcn20_calculate_dlg_params(dc, context, pipes, pipe_cnt, vlevel);
 
-       for (i = 0; i < dc->res_pool->pipe_count; i++) {
-               if (!context->res_ctx.pipe_ctx[i].stream)
-                       continue;
-               if (context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
-                       dcn20_adjust_freesync_v_startup(
-                               &context->res_ctx.pipe_ctx[i].stream->timing,
-                               &context->res_ctx.pipe_ctx[i].pipe_dlg_param.vstartup_start);
-       }
-
        BW_VAL_TRACE_END_WATERMARKS();
 
        goto validate_out;