[8/9] mmc: dw_mmc-pltfm: deploay runtime PM facilities

Commit Message

Shawn Lin Oct. 9, 2016, 1:51 p.m. UTC

Let's migrate it to use runtime PM and remove the system
PM callback from this driver. With this patch, it could
handle system PM properly and could also use runtime PM
if we enable it.

Signed-off-by: Shawn Lin <[e-mail]>
---

 drivers/mmc/host/dw_mmc-pltfm.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

Patch

diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
index c0bb0c7..214e593 100644
--- a/drivers/mmc/host/dw_mmc-pltfm.c
+++ b/drivers/mmc/host/dw_mmc-pltfm.c
@@ -16,6 +16,7 @@ 
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/mmc.h>
@@ -57,26 +58,29 @@  int dw_mci_pltfm_register(struct platform_device *pdev,
 }
 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
 
-#ifdef CONFIG_PM_SLEEP
-/*
- * TODO: we should probably disable the clock to the card in the suspend path.
- */
-static int dw_mci_pltfm_suspend(struct device *dev)
+#ifdef CONFIG_PM
+static int dw_mci_pltfm_runtime_suspend(struct device *dev)
 {
 	struct dw_mci *host = dev_get_drvdata(dev);
 
-	return dw_mci_suspend(host);
+	return dw_mci_runtime_suspend(host);
 }
 
-static int dw_mci_pltfm_resume(struct device *dev)
+static int dw_mci_pltfm_runtime_resume(struct device *dev)
 {
 	struct dw_mci *host = dev_get_drvdata(dev);
 
-	return dw_mci_resume(host);
+	return dw_mci_runtime_resume(host);
 }
-#endif /* CONFIG_PM_SLEEP */
-
-SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
+#endif /* CONFIG_PM */
+
+const struct dev_pm_ops dw_mci_pltfm_pmops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(dw_mci_pltfm_runtime_suspend,
+			   dw_mci_pltfm_runtime_resume,
+			   NULL)
+};
 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
 
 static const struct of_device_id dw_mci_pltfm_match[] = {