diff options
| author | Yongqiang Sun <yongqiang.sun@amd.com> | 2018-09-17 17:05:51 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-10-10 01:02:22 +0300 |
| commit | ceb9831dd6e5dfb79f94b205eade4ecc29e26d60 (patch) | |
| tree | 5d25c385351fc60f05b6702006f51f20bd3e8e64 /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | |
| parent | e15fc81f11854451ec8a8ed9168b8247e4e9a10b (diff) | |
| download | linux-ceb9831dd6e5dfb79f94b205eade4ecc29e26d60.tar.xz | |
drm/amd/display: WA for DF keeps awake after S0i3.
[Why]
DF keeps awake after S0i3 resume due to DRAM_STATE_CNTL
is set by bios command table during dcn init_hw.
[How]
As a work around, check STATE_CNTL status before init_hw,
if it is 0 before init_hw and set to 1 after init_hw,
change it to 0.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c index 1ea91e153d3a..69345ce688c6 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c @@ -87,6 +87,23 @@ void hubbub1_wm_read_state(struct hubbub *hubbub, s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D); } +void hubbub1_disable_allow_self_refresh(struct hubbub *hubbub) +{ + REG_UPDATE(DCHUBBUB_ARB_DRAM_STATE_CNTL, + DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, 0); +} + +bool hububu1_is_allow_self_refresh_enabled(struct hubbub *hubbub) +{ + uint32_t enable = 0; + + REG_GET(DCHUBBUB_ARB_DRAM_STATE_CNTL, + DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, &enable); + + return true ? false : enable; +} + + bool hubbub1_verify_allow_pstate_change_high( struct hubbub *hubbub) { |