From: Richard Purdie Date: Sat, 12 Nov 2005 14:22:14 +0000 (+0000) Subject: [PATCH] USB: Add pxa27x OHCI PM functions X-Git-Tag: v2.6.16-rc1~474^2~22^2~10^2~76 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=2e1dcc1600c1d83b26479edd076866595bbd3523 [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: Richard Purdie Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index c165d1ebed5c..3b1cfe939483 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -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", },