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Commit fcd22e3b authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: musb: blackfin: 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 6f783e28

drivers/usb/musb/blackfin.c

+40 −24
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ struct bfin_glue { 
	struct device		*dev;

	struct platform_device	*musb;

};

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



/*

 * Load an endpoint's FIFO
@@ -406,27 +407,6 @@ static int bfin_musb_init(struct musb *musb) 
	return 0;

}



static int bfin_musb_suspend(struct musb *musb)

{

	if (is_host_active(musb))

		/*

		 * During hibernate gpio_vrsel will change from high to low

		 * low which will generate wakeup event resume the system

		 * immediately.  Set it to 0 before hibernate to avoid this

		 * wakeup event.

		 */

		gpio_set_value(musb->config->gpio_vrsel, 0);



	return 0;

}



static int bfin_musb_resume(struct musb *musb)

{

	bfin_musb_reg_init(musb);



	return 0;

}



static int bfin_musb_exit(struct musb *musb)

{

	gpio_free(musb->config->gpio_vrsel);
@@ -446,9 +426,6 @@ static const struct musb_platform_ops bfin_ops = { 
	.set_mode	= bfin_musb_set_mode,

	.try_idle	= bfin_musb_try_idle,



	.suspend	= bfin_musb_suspend,

	.resume		= bfin_musb_resume,



	.vbus_status	= bfin_musb_vbus_status,

	.set_vbus	= bfin_musb_set_vbus,

};
@@ -528,10 +505,49 @@ static int __exit bfin_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int bfin_suspend(struct device *dev)

{

	struct bfin_glue	*glue = dev_get_drvdata(dev);

	struct musb		*musb = glue_to_musb(glue);



	if (is_host_active(musb))

		/*

		 * During hibernate gpio_vrsel will change from high to low

		 * low which will generate wakeup event resume the system

		 * immediately.  Set it to 0 before hibernate to avoid this

		 * wakeup event.

		 */

		gpio_set_value(musb->config->gpio_vrsel, 0);



	return 0;

}



static int bfin_resume(struct device *dev)

{

	struct bfin_glue	*glue = dev_get_drvdata(dev);

	struct musb		*musb = glue_to_musb(glue);



	bfin_musb_reg_init(musb);



	return 0;

}



static struct dev_pm_ops bfin_pm_ops = {

	.suspend	= bfin_suspend,

	.resume		= bfin_resume,

};



#define DEV_PM_OPS	&bfin_pm_op,

#else

#define DEV_PM_OPS	NULL

#endif



static struct platform_driver bfin_driver = {

	.remove		= __exit_p(bfin_remove),

	.driver		= {

		.name	= "musb-bfin",

		.pm	= DEV_PM_OPS,

	},

};