This patch adds runtime PM support for dw_mmc-rockchip.
Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
---
drivers/mmc/host/dw_mmc-rockchip.c | 57 ++++++++++++++++++++++++++++++++++++--
1 file changed, 54 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index 25eae35..28e0220 100644
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -13,6 +13,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/dw_mmc.h>
#include <linux/of_address.h>
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "dw_mmc.h"
@@ -325,6 +326,7 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
{
const struct dw_mci_drv_data *drv_data;
const struct of_device_id *match;
+ int ret;
if (!pdev->dev.of_node)
return -ENODEV;
@@ -332,16 +334,65 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
match = of_match_node(dw_mci_rockchip_match, pdev->dev.of_node);
drv_data = match->data;
- return dw_mci_pltfm_register(pdev, drv_data);
+ pm_runtime_get_noresume(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
+ pm_runtime_use_autosuspend(&pdev->dev);
+
+ ret = dw_mci_pltfm_register(pdev, drv_data);
+ if (ret) {
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+ return ret;
+ }
+
+ pm_runtime_put_autosuspend(&pdev->dev);
+
+ return 0;
+}
+
+static int dw_mci_rockchip_remove(struct platform_device *pdev)
+{
+ pm_runtime_get_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+
+ return dw_mci_pltfm_remove(pdev);
}
+#ifdef CONFIG_PM
+static int dw_mci_rockchip_runtime_suspend(struct device *dev)
+{
+ struct dw_mci *host = dev_get_drvdata(dev);
+
+ return dw_mci_runtime_suspend(host);
+}
+
+static int dw_mci_rockchip_runtime_resume(struct device *dev)
+{
+ struct dw_mci *host = dev_get_drvdata(dev);
+
+ return dw_mci_runtime_resume(host);
+}
+#endif /* CONFIG_PM */
+
+static const struct dev_pm_ops dw_mci_rockchip_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(dw_mci_rockchip_runtime_suspend,
+ dw_mci_rockchip_runtime_resume,
+ NULL)
+};
+
static struct platform_driver dw_mci_rockchip_pltfm_driver = {
.probe = dw_mci_rockchip_probe,
- .remove = dw_mci_pltfm_remove,
+ .remove = dw_mci_rockchip_remove,
.driver = {
.name = "dwmmc_rockchip",
.of_match_table = dw_mci_rockchip_match,
- .pm = &dw_mci_pltfm_pmops,
+ .pm = &dw_mci_rockchip_dev_pm_ops,
},
};
--
2.3.7
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
