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wusb: hub code recognizes wusb ports 

This patch enables the USB stack to recognize WUSB devices (from a
WUSB HCD) and assigns them the proper speed setting
(USB_SPEED_VARIABLE).

1. Introduce usb_hcd->wireless to mark a host controller instance as
   being wireless, and thus having wireless 'fake' ports. 

   [discarded previous model of using a reserved bit in the port_stat
   struct to do this; thanks to Alan Stern for indicating the
   proper way to do it].

2. Introduce hub.c:hub_is_wusb() that tests if a hub is a WUSB root
   hub (WUSB doesn't have non-root hubs).

New code being pushed to linuxuwb.org requires this patch to connect WUSB
devices.

Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Inaky Perez-Gonzalez 2006-08-25 19:35:29 -07:00 committed by Greg Kroah-Hartman
parent cb4c8fe57c
commit 0165de0974
2 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/usb/core/hcd.h
View File

@ -85,6 +85,7 @@ struct usb_hcd { /* usb_bus.hcpriv points to this */
unsigned uses_new_polling:1;
unsigned poll_rh:1; /* poll for rh status? */
unsigned poll_pending:1; /* status has changed? */
unsigned wireless:1; /* Wireless USB HCD */
int irq; /* irq allocated */
void __iomem *regs; /* device memory/io */

16
drivers/usb/core/hub.c
View File

@ -1331,6 +1331,18 @@ static int hub_port_status(struct usb_hub *hub, int port1,
return ret;
}
/* Returns 1 if @hub is a WUSB root hub, 0 otherwise */
static unsigned hub_is_wusb(struct usb_hub *hub)
{
struct usb_hcd *hcd;
if (hub->hdev->parent != NULL) /* not a root hub? */
return 0;
hcd = container_of(hub->hdev->bus, struct usb_hcd, self);
return hcd->wireless;
}
#define PORT_RESET_TRIES 5
#define SET_ADDRESS_TRIES 2
#define GET_DESCRIPTOR_TRIES 2
@ -1371,7 +1383,9 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
/* if we`ve finished resetting, then break out of the loop */
if (!(portstatus & USB_PORT_STAT_RESET) &&
(portstatus & USB_PORT_STAT_ENABLE)) {
if (portstatus & USB_PORT_STAT_HIGH_SPEED)
if (hub_is_wusb(hub))
udev->speed = USB_SPEED_VARIABLE;
else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
udev->speed = USB_SPEED_HIGH;
else if (portstatus & USB_PORT_STAT_LOW_SPEED)
udev->speed = USB_SPEED_LOW;