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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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13
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -1838,6 +1838,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
DRM_ERROR("amdgpu: failed to initialize vblank_workqueue.\n");
}
if (adev->dm.dc->caps.ips_support && adev->dm.dc->config.disable_ips == DMUB_IPS_ENABLE)
adev->dm.idle_workqueue = idle_create_workqueue(adev);
if (adev->dm.dc->caps.max_links > 0 && adev->family >= AMDGPU_FAMILY_RV) {
adev->dm.hdcp_workqueue = hdcp_create_workqueue(adev, &init_params.cp_psp, adev->dm.dc);
@@ -1935,6 +1938,16 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
adev->dm.vblank_control_workqueue = NULL;
}
if (adev->dm.idle_workqueue) {
if (adev->dm.idle_workqueue->running) {
adev->dm.idle_workqueue->enable = false;
flush_work(&adev->dm.idle_workqueue->work);
}
kfree(adev->dm.idle_workqueue);
adev->dm.idle_workqueue = NULL;
}
amdgpu_dm_destroy_drm_device(&adev->dm);
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)