lkml.org 
[lkml]   [2017]   [Jul]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.9 113/172] drm/amd/powerplay: refine vce dpm update code on Cz.
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Rex Zhu <Rex.Zhu@amd.com>


[ Upstream commit ab8db87b8256e13a62f10af1d32f5fc233c398cc ]

Program HardMin based on the vce_arbiter.ecclk
if ecclk is 0, disable ECLK DPM 0. Otherwise VCE
could hang if switching SCLK from DPM 0 to 6/7

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
@@ -1402,14 +1402,22 @@ int cz_dpm_update_vce_dpm(struct pp_hwm
cz_hwmgr->vce_dpm.hard_min_clk,
PPSMC_MSG_SetEclkHardMin));
} else {
- /*EPR# 419220 -HW limitation to to */
- cz_hwmgr->vce_dpm.hard_min_clk = hwmgr->vce_arbiter.ecclk;
- smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
- PPSMC_MSG_SetEclkHardMin,
- cz_get_eclk_level(hwmgr,
- cz_hwmgr->vce_dpm.hard_min_clk,
- PPSMC_MSG_SetEclkHardMin));
-
+ /*Program HardMin based on the vce_arbiter.ecclk */
+ if (hwmgr->vce_arbiter.ecclk == 0) {
+ smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+ PPSMC_MSG_SetEclkHardMin, 0);
+ /* disable ECLK DPM 0. Otherwise VCE could hang if
+ * switching SCLK from DPM 0 to 6/7 */
+ smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+ PPSMC_MSG_SetEclkSoftMin, 1);
+ } else {
+ cz_hwmgr->vce_dpm.hard_min_clk = hwmgr->vce_arbiter.ecclk;
+ smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+ PPSMC_MSG_SetEclkHardMin,
+ cz_get_eclk_level(hwmgr,
+ cz_hwmgr->vce_dpm.hard_min_clk,
+ PPSMC_MSG_SetEclkHardMin));
+ }
}
return 0;
}

\
 
 \ /
  Last update: 2017-07-03 16:23    [W:0.564 / U:1.552 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site