Commit 51ef434a authored by Akshu Agrawal's avatar Akshu Agrawal Committed by Alex Deucher
Browse files

drm/amd/powerplay: Enable/Disable NBPSTATE on On/OFF of UVD 



We observe black lines (underflow) on display when playing a
4K video with UVD. On Disabling Low memory P state this issue is
not seen.
Multiple runs of power measurement shows no imapct.

Signed-off-by: default avatarAkshu Agrawal <akshu.agrawal@amd.com>
Signed-off-by: default avatarSatyajit Sahu <satyajit.sahu@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 479afffe

drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c

+4 −1
Original line number Diff line number Diff line
@@ -1228,14 +1228,17 @@ static int smu8_dpm_force_dpm_level(struct pp_hwmgr *hwmgr, 


static int smu8_dpm_powerdown_uvd(struct pp_hwmgr *hwmgr)

{

	if (PP_CAP(PHM_PlatformCaps_UVDPowerGating))

	if (PP_CAP(PHM_PlatformCaps_UVDPowerGating)) {

		smu8_nbdpm_pstate_enable_disable(hwmgr, true, true);

		return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_UVDPowerOFF);

	}

	return 0;

}



static int smu8_dpm_powerup_uvd(struct pp_hwmgr *hwmgr)

{

	if (PP_CAP(PHM_PlatformCaps_UVDPowerGating)) {

		smu8_nbdpm_pstate_enable_disable(hwmgr, false, true);

		return smum_send_msg_to_smc_with_parameter(

			hwmgr,

			PPSMC_MSG_UVDPowerON,