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dm: usb: ehci: Implement get_max_xfer_size() operation

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EHCD can handle any transfer length as long as there is enough free
heap space left, hence set the theoretical max number SIZE_MAX.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Bin Meng 2017-09-07 06:13:19 -07:00 • committed by Marek Vasut
parent 022ceacaf8
commit a23aa66baa
1 changed files with 12 additions and 0 deletions
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12
drivers/usb/host/ehci-hcd.c
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@ -1596,6 +1596,17 @@ static int ehci_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
return _ehci_destroy_int_queue(udev, queue); return _ehci_destroy_int_queue(udev, queue);
} }
static int ehci_get_max_xfer_size(struct udevice *dev, size_t *size)
{
/*
* EHCD can handle any transfer length as long as there is enough
* free heap space left, hence set the theoretical max number here.
*/
*size = SIZE_MAX;
return 0;
}
int ehci_register(struct udevice *dev, struct ehci_hccr *hccr, int ehci_register(struct udevice *dev, struct ehci_hccr *hccr,
struct ehci_hcor *hcor, const struct ehci_ops *ops, struct ehci_hcor *hcor, const struct ehci_ops *ops,
uint tweaks, enum usb_init_type init) uint tweaks, enum usb_init_type init)
@ -1658,6 +1669,7 @@ struct dm_usb_ops ehci_usb_ops = {
.create_int_queue = ehci_create_int_queue, .create_int_queue = ehci_create_int_queue,
.poll_int_queue = ehci_poll_int_queue, .poll_int_queue = ehci_poll_int_queue,
.destroy_int_queue = ehci_destroy_int_queue, .destroy_int_queue = ehci_destroy_int_queue,
.get_max_xfer_size = ehci_get_max_xfer_size,
}; };
#endif #endif