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Commit f9014268 authored by Shawn Lin's avatar Shawn Lin Committed by Ulf Hansson
Browse files

mmc: dw_mmc-rockchip: add runtime PM support 



This patch adds runtime PM support for dw_mmc-rockchip.

Signed-off-by: default avatarShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent e9ed8835

drivers/mmc/host/dw_mmc-rockchip.c

+38 −3
Original line number Diff line number Diff line
@@ -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 +334,49 @@ 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);

}



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_runtime_suspend,

			   dw_mci_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,

	},

};