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Commit 2558c1f5 authored by Peter Chen's avatar Peter Chen Committed by Greg Kroah-Hartman
Browse files

usb: chipidea: imx: add system power management support 



Add basic system power management support

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8076932f

drivers/usb/chipidea/ci_hdrc_imx.c

+36 −0
Original line number Diff line number Diff line
@@ -208,6 +208,41 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int imx_controller_suspend(struct device *dev)

{

	struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);



	dev_dbg(dev, "at %s\n", __func__);



	clk_disable_unprepare(data->clk);



	return 0;

}



static int imx_controller_resume(struct device *dev)

{

	struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);



	dev_dbg(dev, "at %s\n", __func__);



	return clk_prepare_enable(data->clk);

}



static int ci_hdrc_imx_suspend(struct device *dev)

{

	return imx_controller_suspend(dev);

}



static int ci_hdrc_imx_resume(struct device *dev)

{

	return imx_controller_resume(dev);

}

#endif /* CONFIG_PM_SLEEP */



static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)

};

static struct platform_driver ci_hdrc_imx_driver = {

	.probe = ci_hdrc_imx_probe,

	.remove = ci_hdrc_imx_remove,
@@ -215,6 +250,7 @@ static struct platform_driver ci_hdrc_imx_driver = { 
		.name = "imx_usb",

		.owner = THIS_MODULE,

		.of_match_table = ci_hdrc_imx_dt_ids,

		.pm = &ci_hdrc_imx_pm_ops,

	 },

};