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musb-new: Add interrupt queue support

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Add interrupt queue support, so that a usb keyboard can be used without
causing huge latencies.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede
2015-01-11 20:34:54 +01:00
committed by Marek Vasut
parent accf04c2aa
commit 904f2a83a8
2 changed files with 67 additions and 1 deletions
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3
include/usb.h
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@@ -120,6 +120,7 @@ struct usb_device {
* Each instance needs its own set of data structures.
*/
unsigned long status;
unsigned long int_pending; /* 1 bit per ep, used by int_queue */
int act_len; /* transfered bytes */
int maxchild; /* Number of ports if hub */
int portnr;
@@ -172,7 +173,7 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len, int interval);
#ifdef CONFIG_USB_EHCI /* Only the ehci code has pollable int support */
#if defined CONFIG_USB_EHCI || defined CONFIG_MUSB_HOST
struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
int queuesize, int elementsize, void *buffer, int interval);
int destroy_int_queue(struct usb_device *dev, struct int_queue *queue);