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Commit 966869d0 authored by Tony Cheng's avatar Tony Cheng Committed by Alex Deucher
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drm/amd/display: option to maximize lb usage 



experimental change for testing if max line buffer result in better stutter efficiency

for 1080p, LB can hold up to 9 line at 10bpcc, potentially add 10 line time of
latency hiding.

Signed-off-by: default avatarTony Cheng <tony.cheng@amd.com>
Reviewed-by: default avatarYongqiang Sun <yongqiang.sun@amd.com>
Acked-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a32a7708

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

+6 −2
Original line number Diff line number Diff line
@@ -181,15 +181,19 @@ struct dc_debug { 
	bool timing_trace;

	bool clock_trace;

	bool validation_trace;



	/* stutter efficiency related */

	bool disable_stutter;

	bool use_max_lb;

	enum dcc_option disable_dcc;

	enum pipe_split_policy pipe_split_policy;

	bool force_single_disp_pipe_split;



	bool disable_dfs_bypass;

	bool disable_dpp_power_gate;

	bool disable_hubp_power_gate;

	bool disable_pplib_wm_range;

	bool use_dml_wm;

	enum pipe_split_policy pipe_split_policy;

	bool force_single_disp_pipe_split;

	unsigned int min_disp_clk_khz;

	int sr_exit_time_dpm0_ns;

	int sr_enter_plus_exit_time_dpm0_ns;

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c

+3 −0
Original line number Diff line number Diff line
@@ -507,6 +507,9 @@ static enum lb_memory_config find_lb_memory_config(struct dcn10_dpp *xfm, 
{

	enum lb_memory_config mem_cfg = LB_MEMORY_CONFIG_0;



	if (xfm->base.ctx->dc->debug.use_max_lb)

		return mem_cfg;



	if (xfm->tf_mask->PIXEL_DEPTH) {

		mem_cfg = dpp10_find_lb_memory_config(scl_data);

	}