+ /*
+ * The atomisp does not use standard PCI power-management through the
+ * PCI config space. Instead this driver directly tells the P-Unit to
+ * disable the ISP over the IOSF. The standard PCI subsystem pm_ops will
+ * try to access the config space before (resume) / after (suspend) this
+ * driver has turned the ISP on / off, resulting in the following errors:
+ *
+ * "Unable to change power state from D0 to D3hot, device inaccessible"
+ * "Unable to change power state from D3cold to D0, device inaccessible"
+ *
+ * To avoid these errors override the pm_domain so that all the PCI
+ * subsys suspend / resume handling is skipped.
+ */
+ isp->pm_domain.ops.runtime_suspend = atomisp_power_off;
+ isp->pm_domain.ops.runtime_resume = atomisp_power_on;
+ isp->pm_domain.ops.suspend = atomisp_suspend;
+ isp->pm_domain.ops.resume = atomisp_resume;
+
+ dev_pm_domain_set(&pdev->dev, &isp->pm_domain);
+