Acked-by: Alex Deucher
From: amd-gfx on behalf of Satyajit
Sahu
Sent: Wednesday, September 26, 2018 4:34:39 AM
To: Deucher, Alexander; amd-gfx@lists.freedesktop.org
Cc: Sahu, Satyajit; Agrawal, Akshu
Subject: [PATCH] drm/amd/powerplay: Enable/Disable NBPSTATE on On/OFF of UVD
From: Akshu Agrawal
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.
Change-Id: I6171ced550ee244e6b9a961fb50247d12f4168a0
Signed-off-by: Akshu Agrawal
Signed-off-by: Satyajit Sahu
Acked-by: Alex Deucher
---
drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
b/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
index b863704..86b6a43 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
@@ -1227,14 +1227,17 @@ 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,
--
1.9.1
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