media: rockchip: isp1: add suspend/resume to detach/attach isp iommu

when system goto suspend, isp will be powered off,
isp iommu will be disabled, need to attach on resume,
detach on suspend.

Change-Id: I2b5e775b44d2b72df4ddcf2db12b54518c3e1f2e
Signed-off-by: Cai YiWei <[email protected]>

Author: Cai YiWei

drivers/media/platform/rockchip/isp1/dev.c

@@ -697,6 +697,27 @@ static int rkisp1_plat_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static int __maybe_unused rkisp1_suspend(struct device *dev)
+{
+	struct rkisp1_device *isp_dev = dev_get_drvdata(dev);
+
+	if (isp_dev->domain)
+		iommu_detach_device(isp_dev->domain, isp_dev->dev);
+
+	return 0;
+}
+
+static int __maybe_unused rkisp1_resume(struct device *dev)
+{
+	struct rkisp1_device *isp_dev = dev_get_drvdata(dev);
+	int ret = 0;
+
+	if (isp_dev->domain)
+		ret = iommu_attach_device(isp_dev->domain, isp_dev->dev);
+
+	return ret;
+}
+
 static int __maybe_unused rkisp1_runtime_suspend(struct device *dev)
 {
 	struct rkisp1_device *isp_dev = dev_get_drvdata(dev);
@@ -719,8 +740,7 @@ static int __maybe_unused rkisp1_runtime_resume(struct device *dev)
 }
 
 static const struct dev_pm_ops rkisp1_plat_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
+	SET_SYSTEM_SLEEP_PM_OPS(rkisp1_suspend, rkisp1_resume)
 	SET_RUNTIME_PM_OPS(rkisp1_runtime_suspend, rkisp1_runtime_resume, NULL)
 };