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Commit fdf0c1c2 authored by Eric Yang's avatar Eric Yang Committed by Alex Deucher
Browse files

drm/amd/display: Add logging for aux DPCD access 



Add basic logging for DPCD access. Does not print
by default.

Currently only prints first byte of the data accessed.

Technical debt: Need to make it so that the entire
data block accessed is printed. Also need to log
address space that's not DPCD.

Signed-off-by: default avatarEric Yang <Eric.Yang2@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 3b94a400

drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c

+16 −0
Original line number Diff line number Diff line
@@ -284,6 +284,14 @@ static bool read_command( 
				msleep(engine->delay);

	} while (ctx.operation_succeeded && !ctx.transaction_complete);



	if (request->payload.address_space ==

		I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {

		dm_logger_write(engine->base.ctx->logger, LOG_I2C_AUX, "READ: addr:0x%x  value:0x%x Result:%d",

				request->payload.address,

				request->payload.data[0],

				ctx.operation_succeeded);

	}



	return ctx.operation_succeeded;

}
@@ -484,6 +492,14 @@ static bool write_command( 
				msleep(engine->delay);

	} while (ctx.operation_succeeded && !ctx.transaction_complete);



	if (request->payload.address_space ==

		I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) {

		dm_logger_write(engine->base.ctx->logger, LOG_I2C_AUX, "WRITE: addr:0x%x  value:0x%x Result:%d",

				request->payload.address,

				request->payload.data[0],

				ctx.operation_succeeded);

	}



	return ctx.operation_succeeded;

}