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Commit 71f5a0ad authored by Alexandre Bailon's avatar Alexandre Bailon Committed by Greg Kroah-Hartman
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usb: musb: da8xx: Add support of suspend / resume 



Implement PM methods specifics for da8xx glue.
The only thing to do is to power off the phy.
As the registers are in retention during suspend,
there is no need to save them.

Signed-off-by: default avatarAlexandre Bailon <abailon@baylibre.com>
Signed-off-by: default avatarBin Liu <b-liu@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ca7c1d50

drivers/usb/musb/da8xx.c

+29 −0
Original line number Diff line number Diff line
@@ -573,6 +573,34 @@ static int da8xx_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int da8xx_suspend(struct device *dev)

{

	int ret;

	struct da8xx_glue *glue = dev_get_drvdata(dev);



	ret = phy_power_off(glue->phy);

	if (ret)

		return ret;

	clk_disable_unprepare(glue->clk);



	return 0;

}



static int da8xx_resume(struct device *dev)

{

	int ret;

	struct da8xx_glue *glue = dev_get_drvdata(dev);



	ret = clk_prepare_enable(glue->clk);

	if (ret)

		return ret;

	return phy_power_on(glue->phy);

}

#endif



static SIMPLE_DEV_PM_OPS(da8xx_pm_ops, da8xx_suspend, da8xx_resume);



#ifdef CONFIG_OF

static const struct of_device_id da8xx_id_table[] = {

	{
@@ -588,6 +616,7 @@ static struct platform_driver da8xx_driver = { 
	.remove		= da8xx_remove,

	.driver		= {

		.name	= "musb-da8xx",

		.pm = &da8xx_pm_ops,

		.of_match_table = of_match_ptr(da8xx_id_table),

	},

};