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From 8745ebc0b599afc57a6c9e00ff0beca363de57de Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Tue, 5 Jun 2018 07:19:08 -0400
Subject: [PATCH 4792/5725] drm/amd/display: remove dcn1 watermark sets b, c
and d
Currently dcn1 will not switch between watermark sets so we can
save time by not calculating 3 extra sets.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
index 8dc0773..12261fb 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
@@ -505,6 +505,7 @@ static void split_stream_across_pipes(
resource_build_scaling_params(secondary_pipe);
}
+#if 0
static void calc_wm_sets_and_perf_params(
struct dc_state *context,
struct dcn_bw_internal_vars *v)
@@ -586,6 +587,7 @@ static void calc_wm_sets_and_perf_params(
if (v->voltage_level >= 3)
context->bw.dcn.watermarks.d = context->bw.dcn.watermarks.a;
}
+#endif
static bool dcn_bw_apply_registry_override(struct dc *dc)
{
@@ -980,7 +982,24 @@ bool dcn_validate_bandwidth(
bw_consumed = v->fabric_and_dram_bandwidth;
display_pipe_configuration(v);
- calc_wm_sets_and_perf_params(context, v);
+ /*calc_wm_sets_and_perf_params(context, v);*/
+ /* Only 1 set is used by dcn since no noticeable
+ * performance improvement was measured and due to hw bug DEGVIDCN10-254
+ */
+ dispclkdppclkdcfclk_deep_sleep_prefetch_parameters_watermarks_and_performance_calculation(v);
+
+ context->bw.dcn.watermarks.a.cstate_pstate.cstate_exit_ns =
+ v->stutter_exit_watermark * 1000;
+ context->bw.dcn.watermarks.a.cstate_pstate.cstate_enter_plus_exit_ns =
+ v->stutter_enter_plus_exit_watermark * 1000;
+ context->bw.dcn.watermarks.a.cstate_pstate.pstate_change_ns =
+ v->dram_clock_change_watermark * 1000;
+ context->bw.dcn.watermarks.a.pte_meta_urgent_ns = v->ptemeta_urgent_watermark * 1000;
+ context->bw.dcn.watermarks.a.urgent_ns = v->urgent_watermark * 1000;
+ context->bw.dcn.watermarks.b = context->bw.dcn.watermarks.a;
+ context->bw.dcn.watermarks.c = context->bw.dcn.watermarks.a;
+ context->bw.dcn.watermarks.d = context->bw.dcn.watermarks.a;
+
context->bw.dcn.clk.fclk_khz = (int)(bw_consumed * 1000000 /
(ddr4_dram_factor_single_Channel * v->number_of_channels));
if (bw_consumed == v->fabric_and_dram_bandwidth_vmin0p65) {
--
2.7.4
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