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| author | Richard Purdie <rpurdie@rpsys.net> | 2005-11-12 14:22:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-01-04 13:48:29 -0800 |
| commit | 2e1dcc1600c1d83b26479edd076866595bbd3523 (patch) | |
| tree | 8cdee2c9a12ec62b380b6c9f8ec13171d6b5a60f | |
| parent | 81f280e22f14d6d976620acaa1b346a90f4e1adc (diff) | |
| download | kernel_samsung_smdk4412-2e1dcc1600c1d83b26479edd076866595bbd3523.zip kernel_samsung_smdk4412-2e1dcc1600c1d83b26479edd076866595bbd3523.tar.gz kernel_samsung_smdk4412-2e1dcc1600c1d83b26479edd076866595bbd3523.tar.bz2 | |
[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 <rpurdie@rpsys.net>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/host/ohci-pxa27x.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index c165d1e..3b1cfe9 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", }, |