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drm/amd/display: Add periodic detection for IPS

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[Why]
HPD interrupt cannot be handled in IPS2 state.
So if there's a display topology change while system in IPS2
it can be missed.

[How]
Implement worker to check each 5 sec in IPS for HPD.

Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li
2024-04-03 12:13:56 -04:00
committed by Alex Deucher
parent 5419a2076d
commit afca033f10
6 changed files with 113 additions and 2 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -137,6 +137,13 @@ struct vblank_control_work {
bool enable;
};
struct idle_workqueue {
struct work_struct work;
struct amdgpu_display_manager *dm;
bool enable;
bool running;
};
/**
* struct amdgpu_dm_backlight_caps - Information about backlight
*
@@ -487,6 +494,7 @@ struct amdgpu_display_manager {
* Deferred work for vblank control events.
*/
struct workqueue_struct *vblank_control_workqueue;
struct idle_workqueue *idle_workqueue;
struct drm_atomic_state *cached_state;
struct dc_state *cached_dc_state;
@@ -956,4 +964,5 @@ amdgpu_dm_find_first_crtc_matching_connector(struct drm_atomic_state *state,
struct drm_crtc *crtc);
int convert_dc_color_depth_into_bpc(enum dc_color_depth display_color_depth);
struct idle_workqueue *idle_create_workqueue(struct amdgpu_device *adev);
#endif /* __AMDGPU_DM_H__ */