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Commit 6f783e28 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: musb: am35x: usb dev_pm_ops structure 



instead of using musb_platform_suspend_resume,
we can use dev_pm_ops and let platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent c20aebb9

drivers/usb/musb/am35x.c

+45 −17
Original line number Diff line number Diff line
@@ -88,6 +88,7 @@ struct am35x_glue { 
	struct clk		*phy_clk;

	struct clk		*clk;

};

#define glue_to_musb(g)		platform_get_drvdata(g->musb)



static inline void phy_on(void)

{
@@ -462,20 +463,6 @@ static int am35x_musb_exit(struct musb *musb) 
	return 0;

}



static int am35x_musb_suspend(struct musb *musb)

{

	phy_off();



	return 0;

}



static int am35x_musb_resume(struct musb *musb)

{

	phy_on();



	return 0;

}



/* AM35x supports only 32bit read operation */

void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)

{
@@ -516,9 +503,6 @@ static const struct musb_platform_ops am35x_ops = { 
	.set_mode	= am35x_musb_set_mode,

	.try_idle	= am35x_musb_try_idle,



	.suspend	= am35x_musb_suspend,

	.resume		= am35x_musb_resume,



	.set_vbus	= am35x_musb_set_vbus,

};
@@ -644,10 +628,54 @@ static int __exit am35x_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int am35x_suspend(struct device *dev)

{

	struct am35x_glue	*glue = dev_get_drvdata(dev);



	phy_off();

	clk_disable(glue->phy_clk);

	clk_disable(glue->clk);



	return 0;

}



static int am35x_resume(struct device *dev)

{

	struct am35x_glue	*glue = dev_get_drvdata(dev);

	int			ret;



	phy_on();

	ret = clk_enable(glue->phy_clk);

	if (ret) {

		dev_err(dev, "failed to enable PHY clock\n");

		return ret;

	}



	ret = clk_enable(glue->clk);

	if (ret) {

		dev_err(dev, "failed to enable clock\n");

		return ret;

	}



	return 0;

}



static struct dev_pm_ops am35x_pm_ops = {

	.suspend	= am35x_suspend,

	.resume		= am35x_resume,

};



#define DEV_PM_OPS	&am35x_pm_ops

#else

#define DEV_PM_OPS	NULL

#endif



static struct platform_driver am35x_driver = {

	.remove		= __exit_p(am35x_remove),

	.driver		= {

		.name	= "musb-am35x",

		.pm	= DEV_PM_OPS,

	},

};