4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Akshu Agrawal <akshu.agra...@amd.com>
commit 51ef434a15b450bfbef1e06cc87ee4e98a224486 upstream.
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: Akshu Agrawal <akshu.agra...@amd.com>
Signed-off-by: Satyajit Sahu <satyajit.s...@amd.com>
Acked-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Cc: sta...@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c
@@ -1222,14 +1222,17 @@ static int smu8_dpm_force_dpm_level(stru
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,
