Commit b5d9a483 authored by Eric Yang's avatar Eric Yang Committed by Alex Deucher
Browse files

drm/amd/display: add debug option for z9 disable interface 



[Why]
To help triage issues and coordinate driver/bios release dependency

[How]
Only enable the new Z9 interface when debug option is set, otherwise
treat Z10 only support case as Zstate disallowed.

Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarEric Yang <Eric.Yang2@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 85b8f62b

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c

+5 −1
Original line number Diff line number Diff line
@@ -308,12 +308,16 @@ void dcn31_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr) 


void dcn31_smu_set_zstate_support(struct clk_mgr_internal *clk_mgr, enum dcn_zstate_support_state support)

{

	//TODO: Work with smu team to define optimization options.

	unsigned int msg_id, param;



	if (!clk_mgr->smu_present)

		return;



	if (!clk_mgr->base.ctx->dc->debug.enable_z9_disable_interface &&

			(support == DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY))

		support = DCN_ZSTATE_SUPPORT_DISALLOW;





	if (support == DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY)

		param = 1;

	else

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

+1 −0
Original line number Diff line number Diff line
@@ -703,6 +703,7 @@ struct dc_debug_options { 
	int crb_alloc_policy_min_disp_count;

#if defined(CONFIG_DRM_AMD_DC_DCN)

	bool disable_z10;

	bool enable_z9_disable_interface;

	bool enable_sw_cntl_psr;

	union dpia_debug_options dpia_debug;

#endif

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c

+1 −0
Original line number Diff line number Diff line
@@ -1033,6 +1033,7 @@ static const struct dc_debug_options debug_defaults_drv = { 
	.optimize_edp_link_rate = true,

	.enable_sw_cntl_psr = true,

	.apply_vendor_specific_lttpr_wa = true,

	.enable_z9_disable_interface = false

};



static const struct dc_debug_options debug_defaults_diags = {