From: Shawn Lin <shawn.lin@rock-chips.com>
Date: Wed, 12 Oct 2016 02:54:40 +0000 (+0800)
Subject: mmc: dw_mmc-k3: deploy runtime PM facilities
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2c8ae20e6c4909919ec7574a534fdb78f70f98b1;p=linux-beck.git

mmc: dw_mmc-k3: deploy runtime PM facilities

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 <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---

diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c
index 624789496dce..9821e6bd5d5e 100644
--- a/drivers/mmc/host/dw_mmc-k3.c
+++ b/drivers/mmc/host/dw_mmc-k3.c
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
@@ -162,35 +163,13 @@ static int dw_mci_k3_probe(struct platform_device *pdev)
 	return dw_mci_pltfm_register(pdev, drv_data);
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int dw_mci_k3_suspend(struct device *dev)
-{
-	struct dw_mci *host = dev_get_drvdata(dev);
-	int ret;
-
-	ret = dw_mci_suspend(host);
-	if (!ret)
-		clk_disable_unprepare(host->ciu_clk);
-
-	return ret;
-}
-
-static int dw_mci_k3_resume(struct device *dev)
-{
-	struct dw_mci *host = dev_get_drvdata(dev);
-	int ret;
-
-	ret = clk_prepare_enable(host->ciu_clk);
-	if (ret) {
-		dev_err(host->dev, "failed to enable ciu clock\n");
-		return ret;
-	}
-
-	return dw_mci_resume(host);
-}
-#endif /* CONFIG_PM_SLEEP */
-
-static SIMPLE_DEV_PM_OPS(dw_mci_k3_pmops, dw_mci_k3_suspend, dw_mci_k3_resume);
+static const struct dev_pm_ops dw_mci_k3_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
+			   dw_mci_runtime_resume,
+			   NULL)
+};
 
 static struct platform_driver dw_mci_k3_pltfm_driver = {
 	.probe		= dw_mci_k3_probe,
@@ -198,7 +177,7 @@ static struct platform_driver dw_mci_k3_pltfm_driver = {
 	.driver		= {
 		.name		= "dwmmc_k3",
 		.of_match_table	= dw_mci_k3_match,
-		.pm		= &dw_mci_k3_pmops,
+		.pm		= &dw_mci_k3_dev_pm_ops,
 	},
 };