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Diffstat (limited to 'drivers/soc/imx/gpcv2.c')
-rw-r--r--drivers/soc/imx/gpcv2.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index adf297c2d2af..811e9d29a079 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -948,6 +948,36 @@ static int imx_pgc_domain_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int imx_pgc_domain_suspend(struct device *dev)
+{
+ int ret;
+
+ /*
+ * This may look strange, but is done so the generic PM_SLEEP code
+ * can power down our domain and more importantly power it up again
+ * after resume, without tripping over our usage of runtime PM to
+ * power up/down the nested domains.
+ */
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(dev);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int imx_pgc_domain_resume(struct device *dev)
+{
+ return pm_runtime_put(dev);
+}
+#endif
+
+static const struct dev_pm_ops imx_pgc_domain_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(imx_pgc_domain_suspend, imx_pgc_domain_resume)
+};
+
static const struct platform_device_id imx_pgc_domain_id[] = {
{ "imx-pgc-domain", },
{ },
@@ -956,6 +986,7 @@ static const struct platform_device_id imx_pgc_domain_id[] = {
static struct platform_driver imx_pgc_domain_driver = {
.driver = {
.name = "imx-pgc",
+ .pm = &imx_pgc_domain_pm_ops,
},
.probe = imx_pgc_domain_probe,
.remove = imx_pgc_domain_remove,