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Commit 2e1dcc16 authored by Richard Purdie's avatar Richard Purdie Committed by Greg Kroah-Hartman
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[PATCH] USB: Add pxa27x OHCI PM functions 



Add power management functions for the pxa27x USB OHCI host controller.
This is a totally rewritten version of the patch by Nicolas Pitre and
Todd Poynor which accounts for recent USB changes.

Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 81f280e2

drivers/usb/host/ohci-pxa27x.c

+27 −6
Original line number Diff line number Diff line
@@ -312,28 +312,49 @@ static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev) 
	return 0;

}



static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *dev, pm_message_t state)

#ifdef	CONFIG_PM

static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state)

{

//	struct usb_hcd *hcd = platform_get_drvdata(dev);

	printk("%s: not implemented yet\n", __FUNCTION__);

	struct ohci_hcd *ohci = platform_get_drvdata(pdev);



	if (time_before(jiffies, ohci->next_statechange))

		msleep(5);

	ohci->next_statechange = jiffies;



	pxa27x_stop_hc(&pdev->dev);

	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;

	pdev->dev.power.power_state = PMSG_SUSPEND;



	return 0;

}



static int ohci_hcd_pxa27x_drv_resume(struct platform_device *dev)

static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)

{

//	struct usb_hcd *hcd = platform_get_drvdata(dev);

	printk("%s: not implemented yet\n", __FUNCTION__);

	struct ohci_hcd	*ohci = platform_get_drvdata(pdev);

	int status;



	if (time_before(jiffies, ohci->next_statechange))

		msleep(5);

	ohci->next_statechange = jiffies;



	if ((status = pxa27x_start_hc(&pdev->dev)) < 0)

		return status;



	pdev->dev.power.power_state = PMSG_ON;

	usb_hcd_resume_root_hub(platform_get_drvdata(pdev));



	return 0;

}

#endif





static struct platform_driver ohci_hcd_pxa27x_driver = {

	.probe		= ohci_hcd_pxa27x_drv_probe,

	.remove		= ohci_hcd_pxa27x_drv_remove,

#ifdef CONFIG_PM

	.suspend	= ohci_hcd_pxa27x_drv_suspend, 

	.resume		= ohci_hcd_pxa27x_drv_resume,

#endif

	.driver		= {

		.name	= "pxa27x-ohci",

	},