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musb: Update usb-compat to work with struct usb_device without a parent ptr

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When building with CONFIG_DM_USB=y struct usb_device does not have a parent
pointer. This commit adds support to the musb code to deal with this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Hans de Goede 2015-06-17 21:33:55 +02:00 committed by Simon Glass
parent 1583723638
commit e740ca3cab
3 changed files with 75 additions and 1 deletions
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4
drivers/usb/musb-new/musb_host.c
View File

@ -2067,7 +2067,11 @@ int musb_urb_enqueue(
/* precompute addressing for external hub/tt ports */
if (musb->is_multipoint) {
#ifndef __UBOOT__
struct usb_device *parent = urb->dev->parent;
#else
struct usb_device *parent = usb_dev_get_parent(urb->dev);
#endif
#ifndef __UBOOT__
if (parent != hcd->self.root_hub) {

2
drivers/usb/musb-new/musb_uboot.c
View File

@ -97,7 +97,7 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe,
buffer, len, setup, 0);
/* Fix speed for non hub-attached devices */
if (!dev->parent)
if (!usb_dev_get_parent(dev))
dev->speed = host_speed;
return submit_urb(&hcd, &urb);

70
drivers/usb/musb-new/usb-compat.h
View File

@ -1,6 +1,7 @@
#ifndef __USB_COMPAT_H__
#define __USB_COMPAT_H__
#include <dm.h>
#include "usb.h"
struct usb_hcd {
@ -66,6 +67,68 @@ static inline int usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd,
return 0;
}
#ifdef CONFIG_DM_USB
static inline u16 find_tt(struct usb_device *udev)
{
struct udevice *parent;
struct usb_device *uparent, *ttdev;
/*
* When called from usb-uclass.c: usb_scan_device() udev->dev points
* to the parent udevice, not the actual udevice belonging to the
* udev as the device is not instantiated yet. So when searching
* for the first usb-2 parent start with udev->dev not
* udev->dev->parent .
*/
ttdev = udev;
parent = udev->dev;
uparent = dev_get_parentdata(parent);
while (uparent->speed != USB_SPEED_HIGH) {
struct udevice *dev = parent;
if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) {
printf("musb: Error cannot find high speed parent of usb-1 device\n");
return 0;
}
ttdev = dev_get_parentdata(dev);
parent = dev->parent;
uparent = dev_get_parentdata(parent);
}
return (uparent->devnum << 8) | (ttdev->portnr - 1);
}
static inline struct usb_device *usb_dev_get_parent(struct usb_device *udev)
{
struct udevice *parent = udev->dev->parent;
/*
* When called from usb-uclass.c: usb_scan_device() udev->dev points
* to the parent udevice, not the actual udevice belonging to the
* udev as the device is not instantiated yet.
*
* If dev is an usb-bus, then we are called from usb_scan_device() for
* an usb-device plugged directly into the root port, return NULL.
*/
if (device_get_uclass_id(udev->dev) == UCLASS_USB)
return NULL;
/*
* If these 2 are not the same we are being called from
* usb_scan_device() and udev itself is the parent.
*/
if (dev_get_parentdata(udev->dev) != udev)
return udev;
/* We are being called normally, use the parent pointer */
if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
return dev_get_parentdata(parent);
return NULL;
}
#else
static inline u16 find_tt(struct usb_device *dev)
{
u8 chid;
@ -86,4 +149,11 @@ static inline u16 find_tt(struct usb_device *dev)
return (hub << 8) | chid;
}
static inline struct usb_device *usb_dev_get_parent(struct usb_device *dev)
{
return dev->parent;
}
#endif
#endif /* __USB_COMPAT_H__ */