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[PATCH] USB: Add pxa27x OHCI PM functions

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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: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Richard Purdie 2005-11-12 14:22:14 +00:00 committed by Greg Kroah-Hartman
parent 81f280e22f
commit 2e1dcc1600
1 changed files with 27 additions and 6 deletions
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33
drivers/usb/host/ohci-pxa27x.c
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@ -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",
},