Re: [PATCH v2] Revert "drm/amd/display: Enable Replay for static screen use cases"

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[AMD Official Use Only - General]


Setting 'replay_feature_enabled' to false did not fix the issue, and PSR could not be enabled on an eDP without Replay support (Sink support 0x03 in my case).

Thank you,

Ivan Lipski

 


From: Lakha, Bhawanpreet <Bhawanpreet.Lakha@xxxxxxx>
Sent: October 3, 2023 1:03 PM
To: Li, Sun peng (Leo) <Sunpeng.Li@xxxxxxx>; LIPSKI, IVAN <IVAN.LIPSKI@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Cc: Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>; Mahfooz, Hamza <Hamza.Mahfooz@xxxxxxx>; Wentland, Harry <Harry.Wentland@xxxxxxx>; Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Chung, ChiaHsuan (Tom) <ChiaHsuan.Chung@xxxxxxx>
Subject: Re: [PATCH v2] Revert "drm/amd/display: Enable Replay for static screen use cases"
 

[AMD Official Use Only - General]


yes, it will disable replay.

From: Li, Sun peng (Leo) <Sunpeng.Li@xxxxxxx>
Sent: October 3, 2023 11:40 AM
To: Lakha, Bhawanpreet <Bhawanpreet.Lakha@xxxxxxx>; LIPSKI, IVAN <IVAN.LIPSKI@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Cc: Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>; Mahfooz, Hamza <Hamza.Mahfooz@xxxxxxx>; Wentland, Harry <Harry.Wentland@xxxxxxx>; Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Chung, ChiaHsuan (Tom) <ChiaHsuan.Chung@xxxxxxx>
Subject: Re: [PATCH v2] Revert "drm/amd/display: Enable Replay for static screen use cases"
 


On 2023-10-03 11:23, Lakha, Bhawanpreet wrote:
> [AMD Official Use Only - General]
>
>
> Why not just set replay_feature_enabled = true; to false?

Would that be the right fix? If so, we can send out a patch
with that instead.

- Leo

> ------------------------------------------------------------------------
> *From:* Li, Sun peng (Leo) <Sunpeng.Li@xxxxxxx>
> *Sent:* October 3, 2023 11:20 AM
> *To:* Lakha, Bhawanpreet <Bhawanpreet.Lakha@xxxxxxx>; LIPSKI, IVAN
> <IVAN.LIPSKI@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
> *Cc:* Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>; Mahfooz, Hamza
> <Hamza.Mahfooz@xxxxxxx>; Wentland, Harry <Harry.Wentland@xxxxxxx>;
> Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Chung, ChiaHsuan (Tom)
> <ChiaHsuan.Chung@xxxxxxx>
> *Subject:* Re: [PATCH v2] Revert "drm/amd/display: Enable Replay for
> static screen use cases"
>
>
> On 2023-10-03 11:13, Lakha, Bhawanpreet wrote:
>> [AMD Official Use Only - General]
>>
>>
>> Any reason for reverting this instead of looking into
>> "amdgpu_dm_setup_replay()" and "replay_feature_enabled" to see why reply
>> is being enabled?
>
> It causes a regression in amd_psr. Unless there's a quick fix, we should
> revert for now. It sounds like this can break existing support for
> PSR/PSR SU.
>
> Acked-by: Leo Li <sunpeng.li@xxxxxxx>
>
> - Leo
>
>>
>> Bhawan
>> ------------------------------------------------------------------------
>> *From:* LIPSKI, IVAN <IVAN.LIPSKI@xxxxxxx>
>> *Sent:* October 2, 2023 1:47 PM
>> *To:* amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
>> *Cc:* Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>; Mahfooz, Hamza
>> <Hamza.Mahfooz@xxxxxxx>; Wentland, Harry <Harry.Wentland@xxxxxxx>;
>> Lakha, Bhawanpreet <Bhawanpreet.Lakha@xxxxxxx>; Deucher, Alexander
>> <Alexander.Deucher@xxxxxxx>; Li, Sun peng (Leo) <Sunpeng.Li@xxxxxxx>;
>> Chung, ChiaHsuan (Tom) <ChiaHsuan.Chung@xxxxxxx>; LIPSKI, IVAN
>> <IVAN.LIPSKI@xxxxxxx>; LIPSKI, IVAN <IVAN.LIPSKI@xxxxxxx>
>> *Subject:* [PATCH v2] Revert "drm/amd/display: Enable Replay for static
>> screen use cases"
>> From: Ivan Lipski <ivlipski@xxxxxxx>
>>
>> This reverts commit a92da5bc33ea99a861f6c422192af6072c145d2d.
>>
>> V2: Reword commit message
>>
>> [WHY]
>> This commit caused regression in which eDP's with PSR support,
>> but no Replay support (Sink support <= 0x03), failed enabling PSR
>> and all IGT amd_psr tests.
>>
>> [HOW]
>> Reverted the patch.
>>
>> Signed-off-by: Ivan Lipski <ivlipskI@xxxxxxx>
>> ---
>>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 23 -------------------
>>   .../amd/display/amdgpu_dm/amdgpu_dm_crtc.c    |  9 +-------
>>   drivers/gpu/drm/amd/include/amd_shared.h      |  2 --
>>   3 files changed, 1 insertion(+), 33 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> index 32156609fbcf..f69b2e9ecd98 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -66,7 +66,6 @@
>>   #include "amdgpu_dm_debugfs.h"
>>   #endif
>>   #include "amdgpu_dm_psr.h"
>> -#include "amdgpu_dm_replay.h"
>>
>>   #include "ivsrcid/ivsrcid_vislands30.h"
>>
>> @@ -4423,7 +4422,6 @@ static int amdgpu_dm_initialize_drm_device(struct
>> amdgpu_device *adev)
>>           enum dc_connection_type new_connection_type = dc_connection_none;
>>           const struct dc_plane_cap *plane;
>>           bool psr_feature_enabled = false;
>> -       bool replay_feature_enabled = false;
>>           int max_overlay = dm->dc->caps.max_slave_planes;
>>
>>           dm->display_indexes_num = dm->dc->caps.max_streams;
>> @@ -4535,21 +4533,6 @@ static int amdgpu_dm_initialize_drm_device(struct
>> amdgpu_device *adev)
>>                   }
>>           }
>>
>> -       if (!(amdgpu_dc_debug_mask & DC_DISABLE_REPLAY)) {
>> -               switch (amdgpu_ip_version(adev, DCE_HWIP, 0)) {
>> -               case IP_VERSION(3, 1, 4):
>> -               case IP_VERSION(3, 1, 5):
>> -               case IP_VERSION(3, 1, 6):
>> -               case IP_VERSION(3, 2, 0):
>> -               case IP_VERSION(3, 2, 1):
>> -               case IP_VERSION(3, 5, 0):
>> -                       replay_feature_enabled = true;
>> -                       break;
>> -               default:
>> -                       replay_feature_enabled = amdgpu_dc_feature_mask
>> & DC_REPLAY_MASK;
>> -                       break;
>> -               }
>> -       }
>>           /* loops over all connectors on the board */
>>           for (i = 0; i < link_cnt; i++) {
>>                   struct dc_link *link = NULL;
>> @@ -4618,12 +4601,6 @@ static int amdgpu_dm_initialize_drm_device(struct
>> amdgpu_device *adev)
>>                                  
>> amdgpu_dm_update_connector_after_detect(aconnector);
>>                                   setup_backlight_device(dm, aconnector);
>>
>> -                               /*
>> -                                * Disable psr if replay can be enabled
>> -                                */
>> -                               if (replay_feature_enabled &&
>> amdgpu_dm_setup_replay(link, aconnector))
>> -                                       psr_feature_enabled = false;
>> -
>>                                   if (psr_feature_enabled)
>>                                           amdgpu_dm_set_psr_caps(link);
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
>> index fb51ec4f8d31..440fc0869a34 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
>> @@ -29,7 +29,6 @@
>>   #include "dc.h"
>>   #include "amdgpu.h"
>>   #include "amdgpu_dm_psr.h"
>> -#include "amdgpu_dm_replay.h"
>>   #include "amdgpu_dm_crtc.h"
>>   #include "amdgpu_dm_plane.h"
>>   #include "amdgpu_dm_trace.h"
>> @@ -124,12 +123,7 @@ static void vblank_control_worker(struct
>> work_struct *work)
>>            * fill_dc_dirty_rects().
>>            */
>>           if (vblank_work->stream && vblank_work->stream->link) {
>> -               /*
>> -                * Prioritize replay, instead of psr
>> -                */
>> -               if
>> (vblank_work->stream->link->replay_settings.replay_feature_enabled)
>> -                       amdgpu_dm_replay_enable(vblank_work->stream, false);
>> -               else if (vblank_work->enable) {
>> +               if (vblank_work->enable) {
>>                           if
>> (vblank_work->stream->link->psr_settings.psr_version <
>> DC_PSR_VERSION_SU_1 &&
>>                              
>> vblank_work->stream->link->psr_settings.psr_allow_active)
>>                                  
>> amdgpu_dm_psr_disable(vblank_work->stream);
>> @@ -138,7 +132,6 @@ static void vblank_control_worker(struct work_struct
>> *work)
>>   #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
>>                             
>> !amdgpu_dm_crc_window_is_activated(&vblank_work->acrtc->base) &&
>>   #endif
>> -                         
>> vblank_work->stream->link->panel_config.psr.disallow_replay &&
>>                             
>> vblank_work->acrtc->dm_irq_params.allow_psr_entry) {
>>                           amdgpu_dm_psr_enable(vblank_work->stream);
>>                   }
>> diff --git a/drivers/gpu/drm/amd/include/amd_shared.h
>> b/drivers/gpu/drm/amd/include/amd_shared.h
>> index 314fd44ec018..ce75351204bb 100644
>> --- a/drivers/gpu/drm/amd/include/amd_shared.h
>> +++ b/drivers/gpu/drm/amd/include/amd_shared.h
>> @@ -244,7 +244,6 @@ enum DC_FEATURE_MASK {
>>           DC_DISABLE_LTTPR_DP2_0 = (1 << 6), //0x40, disabled by default
>>           DC_PSR_ALLOW_SMU_OPT = (1 << 7), //0x80, disabled by default
>>           DC_PSR_ALLOW_MULTI_DISP_OPT = (1 << 8), //0x100, disabled by
>> default
>> -       DC_REPLAY_MASK = (1 << 9), //0x200, disabled by default for dcn
>> < 3.1.4
>>   };
>>
>>   enum DC_DEBUG_MASK {
>> @@ -255,7 +254,6 @@ enum DC_DEBUG_MASK {
>>           DC_DISABLE_PSR = 0x10,
>>           DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,
>>           DC_DISABLE_MPO = 0x40,
>> -       DC_DISABLE_REPLAY = 0x50,
>>           DC_ENABLE_DPIA_TRACE = 0x80,
>>   };
>>
>> --
>> 2.34.1
>>

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