drm/amd/display: Add DCN3.1 DML calculation support

DML (Display mode library) is used for calculating watermarks, bandwidth
and for validating display configurations.

Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 0d06307456a2..d0743d34dc3c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -3070,6 +3070,18 @@ static void dcn20_calculate_wm(
 	context->bw_ctx.bw.dcn.watermarks.a.frac_urg_bw_flip = get_fraction_of_urgent_bandwidth_imm_flip(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+static bool is_dtbclk_required(struct dc *dc, struct dc_state *context)
+{
+	int i;
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		if (!context->res_ctx.pipe_ctx[i].stream)
+			continue;
+	}
+	return false;
+}
+#endif
+
 void dcn20_calculate_dlg_params(
 		struct dc *dc, struct dc_state *context,
 		display_e2e_pipe_params_st *pipes,
@@ -3077,6 +3089,9 @@ void dcn20_calculate_dlg_params(
 		int vlevel)
 {
 	int i, pipe_idx;
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	int plane_count;
+#endif
 
 	/* Writeback MCIF_WB arbitration parameters */
 	dc->res_pool->funcs->set_mcif_arb_params(dc, context, pipes, pipe_cnt);
@@ -3091,6 +3106,21 @@ void dcn20_calculate_dlg_params(
 		context->bw_ctx.dml.vba.DRAMClockChangeSupport[vlevel][context->bw_ctx.dml.vba.maxMpcComb]
 							!= dm_dram_clock_change_unsupported;
 	context->bw_ctx.bw.dcn.clk.dppclk_khz = 0;
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	context->bw_ctx.bw.dcn.clk.z9_support = (context->bw_ctx.dml.vba.StutterPeriod > 5000.0) ?
+			DCN_Z9_SUPPORT_ALLOW : DCN_Z9_SUPPORT_DISALLOW;
+
+	plane_count = 0;
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		if (context->res_ctx.pipe_ctx[i].plane_state)
+			plane_count++;
+	}
+
+	if (plane_count == 0)
+		context->bw_ctx.bw.dcn.clk.z9_support = DCN_Z9_SUPPORT_ALLOW;
+
+	context->bw_ctx.bw.dcn.clk.dtbclk_en = is_dtbclk_required(dc, context);
+#endif
 
 	if (context->bw_ctx.bw.dcn.clk.dispclk_khz < dc->debug.min_disp_clk_khz)
 		context->bw_ctx.bw.dcn.clk.dispclk_khz = dc->debug.min_disp_clk_khz;
@@ -3102,6 +3132,10 @@ void dcn20_calculate_dlg_params(
 		pipes[pipe_idx].pipe.dest.vupdate_offset = get_vupdate_offset(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
 		pipes[pipe_idx].pipe.dest.vupdate_width = get_vupdate_width(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
 		pipes[pipe_idx].pipe.dest.vready_offset = get_vready_offset(&context->bw_ctx.dml, pipes, pipe_cnt, pipe_idx);
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+			context->res_ctx.pipe_ctx[i].det_buffer_size_kb = context->bw_ctx.dml.ip.det_buffer_size_kbytes;
+			context->res_ctx.pipe_ctx[i].unbounded_req = pipes[pipe_idx].pipe.src.unbounded_req_mode;
+#endif
 		if (context->bw_ctx.bw.dcn.clk.dppclk_khz < pipes[pipe_idx].clks_cfg.dppclk_mhz * 1000)
 			context->bw_ctx.bw.dcn.clk.dppclk_khz = pipes[pipe_idx].clks_cfg.dppclk_mhz * 1000;
 		context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz =
@@ -3115,6 +3149,11 @@ void dcn20_calculate_dlg_params(
 	context->bw_ctx.bw.dcn.clk.max_supported_dppclk_khz = context->bw_ctx.dml.soc.clock_limits[vlevel].dppclk_mhz * 1000;
 	context->bw_ctx.bw.dcn.clk.max_supported_dispclk_khz = context->bw_ctx.dml.soc.clock_limits[vlevel].dispclk_mhz * 1000;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	context->bw_ctx.bw.dcn.compbuf_size_kb = context->bw_ctx.dml.ip.config_return_buffer_size_in_kbytes
+						- context->bw_ctx.dml.ip.det_buffer_size_kbytes * pipe_idx;
+#endif
+
 	for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
 		bool cstate_en = context->bw_ctx.dml.vba.PrefetchMode[vlevel][context->bw_ctx.dml.vba.maxMpcComb] != 2;