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authorHans de Goede <hdegoede@redhat.com>2015-05-10 14:10:18 +0200
committerSimon Glass <sjg@chromium.org>2015-05-14 18:49:31 -0600
commit8a5f0665da6701f06443ae989e9c0962807a1249 (patch)
tree9807fc7c3ca01db39343ddff7a12e52632efa630 /drivers/usb/host
parent029fd8ea1fffe70bf0d2dab4c64cffa20bf3f62e (diff)
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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')
-rw-r--r--drivers/usb/host/ehci-hcd.c26
-rw-r--r--drivers/usb/host/usb-uclass.c36
2 files changed, 62 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 6542892..1e5a6e2 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
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index c5ece58..9ee25ed 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -65,6 +65,42 @@ int submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer,
return ops->bulk(bus, udev, pipe, buffer, length);
}
+struct int_queue *create_int_queue(struct usb_device *udev,
+ unsigned long pipe, int queuesize, int elementsize,
+ void *buffer, int interval)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->create_int_queue)
+ return NULL;
+
+ return ops->create_int_queue(bus, udev, pipe, queuesize, elementsize,
+ buffer, interval);
+}
+
+void *poll_int_queue(struct usb_device *udev, struct int_queue *queue)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->poll_int_queue)
+ return NULL;
+
+ return ops->poll_int_queue(bus, udev, queue);
+}
+
+int destroy_int_queue(struct usb_device *udev, struct int_queue *queue)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->destroy_int_queue)
+ return -ENOSYS;
+
+ return ops->destroy_int_queue(bus, udev, queue);
+}
+
int usb_alloc_device(struct usb_device *udev)
{
struct udevice *bus = udev->controller_dev;