/**
* amdgpu_irq_init - init driver interrupt info
*
* @adev: amdgpu device pointer
*
* Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
* Returns 0 for success, error for failure.
*/
int amdgpu_irq_init(struct amdgpu_device *adev)
{
int r = 0;
spin_lock_init(&adev->irq.lock);
r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
if (r) {
return r;
}
/* enable msi */
adev->irq.msi_enabled = false;
if (amdgpu_msi_ok(adev)) {
int ret = pci_enable_msi(adev->pdev);
if (!ret) {
adev->irq.msi_enabled = true;
dev_info(adev->dev, "amdgpu: using MSI.\n");
}
}
INIT_WORK(&adev->hotplug_work, amdgpu_hotplug_work_func);
INIT_WORK(&adev->reset_work, amdgpu_irq_reset_work_func);
adev->irq.installed = true;
r = drm_irq_install(adev->ddev, adev->ddev->pdev->irq);
if (r) {
adev->irq.installed = false;
flush_work(&adev->hotplug_work);
return r;
}
DRM_INFO("amdgpu: irq initialized.\n");
return 0;
}
/**
* amdgpu_irq_init - init driver interrupt info
*
* @adev: amdgpu device pointer
*
* Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
* Returns 0 for success, error for failure.
*/
int amdgpu_irq_init(struct amdgpu_device *adev)
{
int r = 0;
spin_lock_init(&adev->irq.lock);
/* enable msi */
adev->irq.msi_enabled = false;
if (amdgpu_msi_ok(adev)) {
int ret = pci_enable_msi(adev->pdev);
if (!ret) {
adev->irq.msi_enabled = true;
dev_info(adev->dev, "amdgpu: using MSI.\n");
}
}
if (!amdgpu_device_has_dc_support(adev)) {
if (!adev->enable_virtual_display)
/* Disable vblank irqs aggressively for power-saving */
/* XXX: can this be enabled for DC? */
adev->ddev->vblank_disable_immediate = true;
r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
if (r)
return r;
/* pre DCE11 */
INIT_WORK(&adev->hotplug_work,
amdgpu_hotplug_work_func);
}
INIT_WORK(&adev->reset_work, amdgpu_irq_reset_work_func);
adev->irq.installed = true;
r = drm_irq_install(adev->ddev, adev->ddev->pdev->irq);
if (r) {
adev->irq.installed = false;
flush_work(&adev->hotplug_work);
cancel_work_sync(&adev->reset_work);
return r;
}
DRM_INFO("amdgpu: irq initialized.\n");
return 0;
}
