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

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

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-11-29 19:35:14 -05:00
parent c6296f5a65
commit 34c08da209
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
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@ -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;