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USB: langwell: USB Client Remote Wakeup Support 

Remote wakeup support in client driver. Made non-debug only this time.

Signed-off-by: JiebingLi <jiebing.li@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
JiebingLi 2010-08-05 14:18:21 +01:00 committed by Greg Kroah-Hartman
parent 513b91b688
commit 3211cbc20b
2 changed files with 65 additions and 5 deletions
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67
drivers/usb/gadget/langwell_udc.c
View File

@ -1815,6 +1815,36 @@ static ssize_t show_langwell_udc(struct device *_dev,
static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL);
/* device "remote_wakeup" sysfs attribute file */
static ssize_t store_remote_wakeup(struct device *_dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct langwell_udc *dev = the_controller;
unsigned long flags;
ssize_t rc = count;
if (count > 2)
return -EINVAL;
if (count > 0 && buf[count-1] == '\n')
((char *) buf)[count-1] = 0;
if (buf[0] != '1')
return -EINVAL;
/* force remote wakeup enabled in case gadget driver doesn't support */
spin_lock_irqsave(&dev->lock, flags);
dev->remote_wakeup = 1;
dev->dev_status |= (1 << USB_DEVICE_REMOTE_WAKEUP);
spin_unlock_irqrestore(&dev->lock, flags);
langwell_wakeup(&dev->gadget);
return rc;
}
static DEVICE_ATTR(remote_wakeup, S_IWUSR, NULL, store_remote_wakeup);
/*-------------------------------------------------------------------------*/
/*
@ -2136,8 +2166,7 @@ static void get_status(struct langwell_udc *dev, u8 request_type, u16 value,
if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
/* get device status */
status_data = 1 << USB_DEVICE_SELF_POWERED;
status_data |= dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
status_data = dev->dev_status;
} else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
/* get interface status */
status_data = 0;
@ -2275,6 +2304,22 @@ static void handle_setup_packet(struct langwell_udc *dev,
} else if ((setup->bRequestType & (USB_RECIP_MASK
| USB_TYPE_MASK)) == (USB_RECIP_DEVICE
| USB_TYPE_STANDARD)) {
rc = 0;
switch (wValue) {
case USB_DEVICE_REMOTE_WAKEUP:
if (setup->bRequest == USB_REQ_SET_FEATURE) {
dev->remote_wakeup = 1;
dev->dev_status |= (1 << wValue);
} else {
dev->remote_wakeup = 0;
dev->dev_status &= ~(1 << wValue);
}
break;
default:
rc = -EOPNOTSUPP;
break;
}
if (!gadget_is_otg(&dev->gadget))
break;
else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) {
@ -2290,7 +2335,6 @@ static void handle_setup_packet(struct langwell_udc *dev,
dev->gadget.a_alt_hnp_support = 1;
else
break;
rc = 0;
} else
break;
@ -2678,7 +2722,10 @@ static void handle_usb_reset(struct langwell_udc *dev)
dev->ep0_dir = USB_DIR_OUT;
dev->ep0_state = WAIT_FOR_SETUP;
dev->remote_wakeup = 0; /* default to 0 on reset */
/* remote wakeup reset to 0 when the device is reset */
dev->remote_wakeup = 0;
dev->dev_status = 1 << USB_DEVICE_SELF_POWERED;
dev->gadget.b_hnp_enable = 0;
dev->gadget.a_hnp_support = 0;
dev->gadget.a_alt_hnp_support = 0;
@ -2997,6 +3044,7 @@ static void langwell_udc_remove(struct pci_dev *pdev)
device_unregister(&dev->gadget.dev);
device_remove_file(&pdev->dev, &dev_attr_langwell_udc);
device_remove_file(&pdev->dev, &dev_attr_remote_wakeup);
#ifndef OTG_TRANSCEIVER
pci_set_drvdata(pdev, NULL);
@ -3177,7 +3225,10 @@ static int langwell_udc_probe(struct pci_dev *pdev,
dev->resume_state = USB_STATE_NOTATTACHED;
dev->usb_state = USB_STATE_POWERED;
dev->ep0_dir = USB_DIR_OUT;
dev->remote_wakeup = 0; /* default to 0 on reset */
/* remote wakeup reset to 0 when the device is reset */
dev->remote_wakeup = 0;
dev->dev_status = 1 << USB_DEVICE_SELF_POWERED;
#ifndef OTG_TRANSCEIVER
/* reset device controller */
@ -3247,9 +3298,15 @@ static int langwell_udc_probe(struct pci_dev *pdev,
if (retval)
goto error;
retval = device_create_file(&pdev->dev, &dev_attr_remote_wakeup);
if (retval)
goto error_attr1;
dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__);
return 0;
error_attr1:
device_remove_file(&pdev->dev, &dev_attr_langwell_udc);
error:
if (dev) {
dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);

3
drivers/usb/gadget/langwell_udc.h
View File

@ -224,5 +224,8 @@ struct langwell_udc {
/* make sure release() is done */
struct completion *done;
/* device status data for get_status request */
u16 dev_status;
};