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drm/amd/display: Add ETW log to dmub_psr_get_state

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[Why]
GPINT commands have the lowest priority in DMCUB, so it's possible
that the command isn't processed in time.

[How]
Add a log to help identify this case.

Reviewed-by: Koo Anthony <Anthony.Koo@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wyatt Wood 2021-07-12 12:30:50 -04:00 committed by Alex Deucher
parent b2abb05364
commit b30eda8d41
1 changed files with 14 additions and 3 deletions
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17
drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
View File

@ -29,6 +29,8 @@
#include "dmub/dmub_srv.h"
#include "core_types.h"
#define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
#define MAX_PIPES 6
/*
@ -96,10 +98,19 @@ static void dmub_psr_get_state(struct dmub_psr *dmub, enum dc_psr_state *state,
// Return invalid state when GPINT times out
*state = PSR_STATE_INVALID;
// Assert if max retry hit
if (retry_count >= 1000)
ASSERT(0);
} while (++retry_count <= 1000 && *state == PSR_STATE_INVALID);
// Assert if max retry hit
if (retry_count >= 1000 && *state == PSR_STATE_INVALID) {
ASSERT(0);
DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR,
WPP_BIT_FLAG_Firmware_PsrState,
"Unable to get PSR state from FW.");
} else
DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_VERBOSE,
WPP_BIT_FLAG_Firmware_PsrState,
"Got PSR state from FW. PSR state: %d, Retry count: %d",
*state, retry_count);
}
/*