C++ drm_kms_helper_poll_enable函数代码示例

static int fsl_dcu_drm_pm_suspend(struct device *dev)
{
	struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);

	if (!fsl_dev)
		return 0;

	disable_irq(fsl_dev->irq);
	drm_kms_helper_poll_disable(fsl_dev->drm);

	console_lock();
	drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 1);
	console_unlock();

	fsl_dev->state = drm_atomic_helper_suspend(fsl_dev->drm);
	if (IS_ERR(fsl_dev->state)) {
		console_lock();
		drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 0);
		console_unlock();

		drm_kms_helper_poll_enable(fsl_dev->drm);
		enable_irq(fsl_dev->irq);
		return PTR_ERR(fsl_dev->state);
	}

	clk_disable_unprepare(fsl_dev->pix_clk);
	clk_disable_unprepare(fsl_dev->clk);

	return 0;
}

int i915_resume(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	int ret;

	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
		return 0;

#ifndef __NetBSD__		/* pmf handles this for us.  */
	if (pci_enable_device(dev->pdev))
		return -EIO;
#endif

	pci_set_master(dev->pdev);

	intel_gt_reset(dev);

	/*
	 * Platforms with opregion should have sane BIOS, older ones (gen3 and
	 * earlier) need this since the BIOS might clear all our scratch PTEs.
	 */
	if (drm_core_check_feature(dev, DRIVER_MODESET) &&
	    !dev_priv->opregion.header) {
		mutex_lock(&dev->struct_mutex);
		i915_gem_restore_gtt_mappings(dev);
		mutex_unlock(&dev->struct_mutex);
	}

	ret = __i915_drm_thaw(dev);
	if (ret)
		return ret;

	drm_kms_helper_poll_enable(dev);
	return 0;
}

static int fsl_dcu_drm_pm_resume(struct device *dev)
{
	struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
	int ret;

	if (!fsl_dev)
		return 0;

	ret = clk_prepare_enable(fsl_dev->clk);
	if (ret < 0) {
		dev_err(dev, "failed to enable dcu clk\n");
		return ret;
	}

	if (fsl_dev->tcon)
		fsl_tcon_bypass_enable(fsl_dev->tcon);
	fsl_dcu_drm_init_planes(fsl_dev->drm);
	drm_atomic_helper_resume(fsl_dev->drm, fsl_dev->state);

	console_lock();
	drm_fbdev_cma_set_suspend(fsl_dev->fbdev, 0);
	console_unlock();

	drm_kms_helper_poll_enable(fsl_dev->drm);
	enable_irq(fsl_dev->irq);

	return 0;
}

static int fsl_dcu_drm_pm_resume(struct device *dev)
{
	struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
	int ret;

	if (!fsl_dev)
		return 0;

	ret = clk_enable(fsl_dev->clk);
	if (ret < 0) {
		dev_err(dev, "failed to enable dcu clk\n");
		clk_unprepare(fsl_dev->clk);
		return ret;
	}
	ret = clk_prepare(fsl_dev->clk);
	if (ret < 0) {
		dev_err(dev, "failed to prepare dcu clk\n");
		return ret;
	}

	drm_kms_helper_poll_enable(fsl_dev->drm);
	regcache_cache_only(fsl_dev->regmap, false);
	regcache_sync(fsl_dev->regmap);

	return 0;
}

int i915_resume(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	int ret;

	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
		return 0;

	if (pci_enable_device(dev->pdev))
		return -EIO;

	pci_set_master(dev->pdev);

#ifdef CONFIG_I915_VGT
	if (i915_host_mediate) {
		int error = vgt_resume(dev->pdev);
		if (error)
			return error;
	}
#endif

	/*
	 * Platforms with opregion should have sane BIOS, older ones (gen3 and
	 * earlier) need to restore the GTT mappings since the BIOS might clear
	 * all our scratch PTEs.
	 */
	ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
	if (ret)
		return ret;

	drm_kms_helper_poll_enable(dev);
	return 0;
}

static int omap_drm_resume(struct device *dev)
{
	struct drm_device *drm_dev = dev_get_drvdata(dev);

	drm_kms_helper_poll_enable(drm_dev);

	return omap_gem_resume(dev);
}

static int udl_usb_resume(struct usb_interface *interface)
{
	struct drm_device *dev = usb_get_intfdata(interface);

	drm_kms_helper_poll_enable(dev);
	udl_modeset_restore(dev);
	return 0;
}

static int __maybe_unused xylon_drm_pm_resume(struct device *dev)
{
	struct xylon_drm_device *xdev = dev_get_drvdata(dev);

	drm_helper_connector_dpms(xdev->connector, DRM_MODE_DPMS_ON);
	drm_kms_helper_poll_enable(xdev->dev);

	return 0;
}

static int rcar_du_pm_resume(struct device *dev)
{
	struct rcar_du_device *rcdu = dev_get_drvdata(dev);

	drm_atomic_helper_resume(rcdu->ddev, rcdu->suspend_state);
	drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
	drm_kms_helper_poll_enable(rcdu->ddev);

	return 0;
}

static __maybe_unused int drv_resume(struct device *dev)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct ltdc_device *ldev = ddev->dev_private;

	ltdc_resume(ddev);
	drm_atomic_helper_resume(ddev, ldev->suspend_state);
	drm_kms_helper_poll_enable(ddev);

	return 0;
}

static int shmob_drm_pm_resume(struct device *dev)
{
	struct shmob_drm_device *sdev = dev_get_drvdata(dev);

	drm_modeset_lock_all(sdev->ddev);
	shmob_drm_crtc_resume(&sdev->crtc);
	drm_modeset_unlock_all(sdev->ddev);

	drm_kms_helper_poll_enable(sdev->ddev);
	return 0;
}

static int shmob_drm_pm_resume(struct device *dev)
{
	struct shmob_drm_device *sdev = dev_get_drvdata(dev);

	mutex_lock(&sdev->ddev->mode_config.mutex);
	shmob_drm_crtc_resume(&sdev->crtc);
	mutex_unlock(&sdev->ddev->mode_config.mutex);

	drm_kms_helper_poll_enable(sdev->ddev);
	return 0;
}

static int omap_drm_resume(struct device *dev)
{
	struct drm_device *drm_dev = dev_get_drvdata(dev);

	drm_modeset_lock_all(drm_dev);
	omap_drm_resume_all_displays();
	drm_modeset_unlock_all(drm_dev);

	drm_kms_helper_poll_enable(drm_dev);

	return omap_gem_resume(drm_dev);
}

static int bochs_pm_resume(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	struct bochs_device *bochs = drm_dev->dev_private;

	drm_helper_resume_force_mode(drm_dev);

	drm_fb_helper_set_suspend_unlocked(&bochs->fb.helper, 0);

	drm_kms_helper_poll_enable(drm_dev);
	return 0;
}

static int ast_drm_resume(struct drm_device *dev)
{
	int ret;

	if (pci_enable_device(dev->pdev))
		return -EIO;

	ret = ast_drm_thaw(dev);
	if (ret)
		return ret;

	drm_kms_helper_poll_enable(dev);
	return 0;
}