diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-05-10 14:10:18 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-05-14 18:49:31 -0600 |
| commit | 8a5f0665da6701f06443ae989e9c0962807a1249 (patch) | |
| tree | 9807fc7c3ca01db39343ddff7a12e52632efa630 /drivers/usb/host/ehci-hcd.c | |
| parent | 029fd8ea1fffe70bf0d2dab4c64cffa20bf3f62e (diff) | |
dm: usb: Add support for interrupt queues to the dm usb code
Interrupt endpoints typically are polled for a long time by the usb
controller before they return anything, so calls to submit_int_msg() can
take a long time to complete this.
To avoid this the u-boot code has the an interrupt queue mechanism / API,
add support for this to the driver-model usb code and implement it for the
dm ehci code.
See the added doc comments for more details.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 65428924c0..1e5a6e2b20 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1605,6 +1605,29 @@ static int ehci_submit_int_msg(struct udevice *dev, struct usb_device *udev, return _ehci_submit_int_msg(udev, pipe, buffer, length, interval); } +static struct int_queue *ehci_create_int_queue(struct udevice *dev, + struct usb_device *udev, unsigned long pipe, int queuesize, + int elementsize, void *buffer, int interval) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _ehci_create_int_queue(udev, pipe, queuesize, elementsize, + buffer, interval); +} + +static void *ehci_poll_int_queue(struct udevice *dev, struct usb_device *udev, + struct int_queue *queue) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _ehci_poll_int_queue(udev, queue); +} + +static int ehci_destroy_int_queue(struct udevice *dev, struct usb_device *udev, + struct int_queue *queue) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _ehci_destroy_int_queue(udev, queue); +} + int ehci_register(struct udevice *dev, struct ehci_hccr *hccr, struct ehci_hcor *hcor, const struct ehci_ops *ops, uint tweaks, enum usb_init_type init) @@ -1653,6 +1676,9 @@ struct dm_usb_ops ehci_usb_ops = { .control = ehci_submit_control_msg, .bulk = ehci_submit_bulk_msg, .interrupt = ehci_submit_int_msg, + .create_int_queue = ehci_create_int_queue, + .poll_int_queue = ehci_poll_int_queue, + .destroy_int_queue = ehci_destroy_int_queue, }; #endif |