Commit 34c08da2 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/powerplay: check MC firmware for FFC support 



Check if the MC firmware supports FFC and tell the SMC so
mclk switching is handled properly.

Reviewed-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent c6296f5a

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

+8 −0
Original line number Diff line number Diff line
@@ -4222,9 +4222,17 @@ static int smu7_check_mc_firmware(struct pp_hwmgr *hwmgr) 
	if (tmp & (1 << 23)) {

		data->mem_latency_high = MEM_LATENCY_HIGH;

		data->mem_latency_low = MEM_LATENCY_LOW;

		if ((hwmgr->chip_id == CHIP_POLARIS10) ||

		    (hwmgr->chip_id == CHIP_POLARIS11) ||

		    (hwmgr->chip_id == CHIP_POLARIS12))

			smum_send_msg_to_smc(hwmgr, PPSMC_MSG_EnableFFC);

	} else {

		data->mem_latency_high = 330;

		data->mem_latency_low = 330;

		if ((hwmgr->chip_id == CHIP_POLARIS10) ||

		    (hwmgr->chip_id == CHIP_POLARIS11) ||

		    (hwmgr->chip_id == CHIP_POLARIS12))

			smum_send_msg_to_smc(hwmgr, PPSMC_MSG_DisableFFC);

	}



	return 0;

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