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Commit 0165de09 authored by Inaky Perez-Gonzalez's avatar Inaky Perez-Gonzalez Committed by Greg Kroah-Hartman
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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: default avatarInaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent cb4c8fe5

drivers/usb/core/hcd.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/usb/core/hub.c

+15 −1
Original line number Diff line number Diff line
@@ -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;