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Commit 2c8ae20e authored by Shawn Lin's avatar Shawn Lin Committed by Ulf Hansson
Browse files

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: 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 1f5c51d7

drivers/mmc/host/dw_mmc-k3.c

+9 −30
Original line number Diff line number Diff line
@@ -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,

	},

};