drm/amdgpu: Enter low power state if CRTC active. (97f6a21b) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+38 −7

Original line number	Diff line number	Diff line
		@@ -1299,24 +1299,55 @@ static int amdgpu_pmops_runtime_idle(struct device *dev)
		{
		struct drm_device *drm_dev = dev_get_drvdata(dev);
		struct amdgpu_device *adev = drm_dev->dev_private;
		struct drm_crtc *crtc;
		/* we don't want the main rpm_idle to call suspend - we want to autosuspend */
		int ret = 1;

		if (!adev->runpm) {
		pm_runtime_forbid(dev);
		return -EBUSY;
		}

		list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
		if (crtc->enabled) {
		DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
		return -EBUSY;
		if (amdgpu_device_has_dc_support(adev)) {
		struct drm_crtc *crtc;

		drm_modeset_lock_all(drm_dev);

		drm_for_each_crtc(crtc, drm_dev) {
		if (crtc->state->active) {
		ret = -EBUSY;
		break;
		}
		}

		drm_modeset_unlock_all(drm_dev);

		} else {
		struct drm_connector *list_connector;
		struct drm_connector_list_iter iter;

		mutex_lock(&drm_dev->mode_config.mutex);
		drm_modeset_lock(&drm_dev->mode_config.connection_mutex, NULL);

		drm_connector_list_iter_begin(drm_dev, &iter);
		drm_for_each_connector_iter(list_connector, &iter) {
		if (list_connector->dpms == DRM_MODE_DPMS_ON) {
		ret = -EBUSY;
		break;
		}
		}

		drm_connector_list_iter_end(&iter);

		drm_modeset_unlock(&drm_dev->mode_config.connection_mutex);
		mutex_unlock(&drm_dev->mode_config.mutex);
		}

		if (ret == -EBUSY)
		DRM_DEBUG_DRIVER("failing to power off - crtc active\n");

		pm_runtime_mark_last_busy(dev);
		pm_runtime_autosuspend(dev);
		/* we don't want the main rpm_idle to call suspend - we want to autosuspend */
		return 1;
		return ret;
		}

		long amdgpu_drm_ioctl(struct file *filp,

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