diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/usb.c | 72 |
1 files changed, 42 insertions, 30 deletions
diff --git a/common/usb.c b/common/usb.c index 5a49502f8e..ca384463e0 100644 --- a/common/usb.c +++ b/common/usb.c @@ -980,19 +980,10 @@ static int usb_setup_descriptor(struct usb_device *dev, bool do_read) return 0; } -/* - * By the time we get here, the device has gotten a new device ID - * and is in the default state. We need to identify the thing and - * get the ball rolling.. - * - * Returns 0 for success, != 0 for error. - */ -int usb_new_device(struct usb_device *dev) +static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read, + struct usb_device *parent, int portnr) { - bool do_read = true; - int addr, err; - int tmp; - ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); + int err; /* * Allocate usb 3.0 device context. @@ -1000,28 +991,15 @@ int usb_new_device(struct usb_device *dev) * and related data structures first. This call does that. * Refer to sec 4.3.2 in xHCI spec rev1.0 */ - if (usb_alloc_device(dev)) { + err = usb_alloc_device(dev); + if (err) { printf("Cannot allocate device context to get SLOT_ID\n"); - return -1; + return err; } - - /* We still haven't set the Address yet */ - addr = dev->devnum; - dev->devnum = 0; - - /* - * XHCI needs to issue a Address device command to setup - * proper device context structures, before it can interact - * with the device. So a get_descriptor will fail before any - * of that is done for XHCI unlike EHCI. - */ -#ifdef CONFIG_USB_XHCI - do_read = false; -#endif err = usb_setup_descriptor(dev, do_read); if (err) return err; - err = usb_legacy_port_reset(dev->parent, dev->portnr); + err = usb_legacy_port_reset(parent, portnr); if (err) return err; @@ -1032,11 +1010,45 @@ int usb_new_device(struct usb_device *dev) if (err < 0) { printf("\n USB device not accepting new address " \ "(error=%lX)\n", dev->status); - return -EIO; + return err; } mdelay(10); /* Let the SET_ADDRESS settle */ + return 0; +} + +/* + * By the time we get here, the device has gotten a new device ID + * and is in the default state. We need to identify the thing and + * get the ball rolling.. + * + * Returns 0 for success, != 0 for error. + */ +int usb_new_device(struct usb_device *dev) +{ + bool do_read = true; + int addr, err; + int tmp, ret; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); + + /* We still haven't set the Address yet */ + addr = dev->devnum; + dev->devnum = 0; + + /* + * XHCI needs to issue a Address device command to setup + * proper device context structures, before it can interact + * with the device. So a get_descriptor will fail before any + * of that is done for XHCI unlike EHCI. + */ +#ifdef CONFIG_USB_XHCI + do_read = false; +#endif + ret = usb_prepare_device(dev, addr, do_read, dev->parent, dev->portnr); + if (ret) + return ret; + tmp = sizeof(dev->descriptor); err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, |