[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",
},
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems? Stop! Download the new AJAX search engine that makes
searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_idv37&alloc_id865&op=click
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
