Commit 2eee829e authored by Alvin Lee's avatar Alvin Lee Committed by Alex Deucher
Browse files

drm/amd/display: Driver support for MCLK query tool 



Implement handling for escape call to query the MCLK switch support for
the current display config.

Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarJun Lei <Jun.Lei@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarAlvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9506b8d9

drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c

+24 −0
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ static void recalculate_params( 
		unsigned int num_pipes);



static unsigned int CursorBppEnumToBits(enum cursor_bpp ebpp);

static void cache_debug_params(struct display_mode_lib *mode_lib);



unsigned int dml_get_voltage_level(

		struct display_mode_lib *mode_lib,
@@ -73,6 +74,7 @@ unsigned int dml_get_voltage_level( 
		PixelClockAdjustmentForProgressiveToInterlaceUnit(mode_lib);

	}

	mode_lib->funcs.validate(mode_lib);

	cache_debug_params(mode_lib);



	return mode_lib->vba.VoltageLevel;

}
@@ -745,6 +747,28 @@ static void fetch_pipe_params(struct display_mode_lib *mode_lib) 
	mode_lib->vba.HostVMEnable = mode_lib->vba.HostVMEnable && !!ip->hostvm_enable;

}



/**

 * ********************************************************************************************

 * cache_debug_params: Cache any params that needed to be maintained from the initial validation

 * for debug purposes.

 *

 * The DML getters can modify some of the VBA params that we are interested in (for example when

 * calculating with dummy p-state latency), so cache any params here that we want for debugging

 *

 * @param [in] mode_lib: mode_lib input/output of validate call

 *

 * @return: void

 *

 * ********************************************************************************************

 */

static void cache_debug_params(struct display_mode_lib *mode_lib)

{

	int k = 0;



	for (k = 0; k < mode_lib->vba.NumberOfActivePlanes; k++)

		mode_lib->vba.CachedActiveDRAMClockChangeLatencyMargin[k] = mode_lib->vba.ActiveDRAMClockChangeLatencyMargin[k];

}



// in wm mode we pull the parameters needed from the display_e2e_pipe_params_st structs

// rather than working them out as in recalculate_ms

static void recalculate_params(

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

+1 −0
Original line number Diff line number Diff line
@@ -195,6 +195,7 @@ struct vba_vars_st { 
	unsigned int LBLatencyHidingSourceLinesY;

	unsigned int LBLatencyHidingSourceLinesC;

	double ActiveDRAMClockChangeLatencyMargin[DC__NUM_DPP__MAX];

	double CachedActiveDRAMClockChangeLatencyMargin[DC__NUM_DPP__MAX]; // Cache in dml_get_voltage_level for debug purposes only

	double MinActiveDRAMClockChangeMargin;

	double InitFillLevel;

	double FinalFillMargin;