1 files changed, 30 insertions, 20 deletions

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 f3334f513eb4..3f3d4daa6294 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1310,6 +1310,19 @@ static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx
 {
 	new_pipe->update_flags.raw = 0;
 
+	/* If non-phantom pipe is being transitioned to a phantom pipe,
+	 * set disable and return immediately. This is because the pipe
+	 * that was previously in use must be fully disabled before we
+	 * can "enable" it as a phantom pipe (since the OTG will certainly
+	 * be different). The post_unlock sequence will set the correct
+	 * update flags to enable the phantom pipe.
+	 */
+	if (old_pipe->plane_state && !old_pipe->plane_state->is_phantom &&
+			new_pipe->plane_state && new_pipe->plane_state->is_phantom) {
+		new_pipe->update_flags.bits.disable = 1;
+		return;
+	}
+
 	/* Exit on unchanged, unused pipe */
 	if (!old_pipe->plane_state && !new_pipe->plane_state)
 		return;
@@ -1663,6 +1676,7 @@ static void dcn20_program_pipe(
 				pipe_ctx->pipe_dlg_param.vupdate_width);
 
 		if (pipe_ctx->stream->mall_stream_config.type != SUBVP_PHANTOM) {
+			pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK);
 			pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE);
 		}
 
@@ -1833,6 +1847,17 @@ void dcn20_program_front_end_for_ctx(
 			context->stream_status[0].plane_count > 1) {
 			pipe->plane_res.hubp->funcs->hubp_wait_pipe_read_start(pipe->plane_res.hubp);
 		}
+
+		/* when dynamic ODM is active, pipes must be reconfigured when all planes are
+		 * disabled, as some transitions will leave software and hardware state
+		 * mismatched.
+		 */
+		if (dc->debug.enable_single_display_2to1_odm_policy &&
+			pipe->stream &&
+			pipe->update_flags.bits.disable &&
+			!pipe->prev_odm_pipe &&
+			hws->funcs.update_odm)
+			hws->funcs.update_odm(dc, context, pipe);
 	}
 }
 
@@ -1872,26 +1897,6 @@ void dcn20_post_unlock_program_front_end(
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
-		struct pipe_ctx *old_pipe = &dc->current_state->res_ctx.pipe_ctx[i];
-
-		/* If an active, non-phantom pipe is being transitioned into a phantom
-		 * pipe, wait for the double buffer update to complete first before we do
-		 * phantom pipe programming (HUBP_VTG_SEL updates right away so that can
-		 * cause issues).
-		 */
-		if (pipe->stream && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM &&
-				old_pipe->stream && old_pipe->stream->mall_stream_config.type != SUBVP_PHANTOM) {
-			old_pipe->stream_res.tg->funcs->wait_for_state(
-					old_pipe->stream_res.tg,
-					CRTC_STATE_VBLANK);
-			old_pipe->stream_res.tg->funcs->wait_for_state(
-					old_pipe->stream_res.tg,
-					CRTC_STATE_VACTIVE);
-		}
-	}
-
-	for (i = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
 
 		if (pipe->plane_state && !pipe->top_pipe) {
 			/* Program phantom pipe here to prevent a frame of underflow in the MPO transition
@@ -1901,6 +1906,11 @@ void dcn20_post_unlock_program_front_end(
 			 */
 			while (pipe) {
 				if (pipe->stream && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
+					/* When turning on the phantom pipe we want to run through the
+					 * entire enable sequence, so apply all the "enable" flags.
+					 */
+					if (dc->hwss.apply_update_flags_for_phantom)
+						dc->hwss.apply_update_flags_for_phantom(pipe);
 					if (dc->hwss.update_phantom_vp_position)
 						dc->hwss.update_phantom_vp_position(dc, context, pipe);
 					dcn20_program_pipe(dc, pipe, context);