drm/amd/display: Make unbounded req update separate from dlg/ttu

[Description]
- Updates to unbounded requesting should not be conditional
  on updates to dlg / ttu, as this could prevent unbounded
  requesting from being updated if dlg / ttu does not change
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -1361,6 +1361,7 @@ static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx
 		new_pipe->update_flags.bits.dppclk = 1;
 		new_pipe->update_flags.bits.hubp_interdependent = 1;
 		new_pipe->update_flags.bits.hubp_rq_dlg_ttu = 1;
+		new_pipe->update_flags.bits.unbounded_req = 1;
 		new_pipe->update_flags.bits.gamut_remap = 1;
 		new_pipe->update_flags.bits.scaler = 1;
 		new_pipe->update_flags.bits.viewport = 1;
@@ -1504,6 +1505,9 @@ static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx
 				memcmp(&old_pipe->rq_regs, &new_pipe->rq_regs, sizeof(old_pipe->rq_regs)))
 			new_pipe->update_flags.bits.hubp_rq_dlg_ttu = 1;
 	}
+
+	if (old_pipe->unbounded_req != new_pipe->unbounded_req)
+		new_pipe->update_flags.bits.unbounded_req = 1;
 }
 
 static void dcn20_update_dchubp_dpp(
@@ -1537,10 +1541,11 @@ static void dcn20_update_dchubp_dpp(
 			&pipe_ctx->ttu_regs,
 			&pipe_ctx->rq_regs,
 			&pipe_ctx->pipe_dlg_param);
+	}
 
-		if (hubp->funcs->set_unbounded_requesting)
+	if (pipe_ctx->update_flags.bits.unbounded_req && hubp->funcs->set_unbounded_requesting)
 		hubp->funcs->set_unbounded_requesting(hubp, pipe_ctx->unbounded_req);
-	}
+
 	if (pipe_ctx->update_flags.bits.hubp_interdependent)
 		hubp->funcs->hubp_setup_interdependent(
 			hubp,

drivers/gpu/drm/amd/display/dc/inc/core_types.h

@@ -374,6 +374,7 @@ union pipe_update_flags {
 		uint32_t viewport : 1;
 		uint32_t plane_changed : 1;
 		uint32_t det_size : 1;
+		uint32_t unbounded_req : 1;
 	} bits;
 	uint32_t raw;
 };