crypto: omap-sham - Add suspend/resume support

Add suspend/resume support to the OMAP SHAM driver.

CC: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 777eb9fdd096..9c3b096e15e8 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1269,12 +1269,31 @@ static int __devexit omap_sham_remove(struct platform_device *pdev)
         return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int omap_sham_suspend(struct device *dev)
+{
+        pm_runtime_put_sync(dev);
+        return 0;
+}
+
+static int omap_sham_resume(struct device *dev)
+{
+        pm_runtime_get_sync(dev);
+        return 0;
+}
+#endif
+
+static const struct dev_pm_ops omap_sham_pm_ops = {
+        SET_SYSTEM_SLEEP_PM_OPS(omap_sham_suspend, omap_sham_resume)
+};
+
 static struct platform_driver omap_sham_driver = {
         .probe  = omap_sham_probe,
         .remove = omap_sham_remove,
         .driver = {
                 .name   = "omap-sham",
                 .owner  = THIS_MODULE,
+                .pm     = &omap_sham_pm_ops,
         },
 };