[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 <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
commit 2e1dcc1600c1d83b26479edd076866595bbd3523
tree 8cdee2c9a12ec62b380b6c9f8ec13171d6b5a60f
parent 81f280e22f14d6d976620acaa1b346a90f4e1adc
author Richard Purdie <[EMAIL PROTECTED]> Sat, 12 Nov 2005 14:22:14 +0000
committer Greg Kroah-Hartman <[EMAIL PROTECTED]> Wed, 04 Jan 2006 13:48:29 -0800
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(st
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",
},
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