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

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

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alvin Lee 2022-01-23 13:20:00 -05:00 committed by Alex Deucher
parent 9506b8d962
commit 2eee829ed4
2 changed files with 25 additions and 0 deletions
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24
drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
View File

@ -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(

1
drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
View File

@ -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;