USB_ENDPOINT_IS_BULK(9) Kernel Mode Gadget API USB_ENDPOINT_IS_BULK(9)NAME
usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
SYNOPSIS
int usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor * epd);
ARGUMENTS
epd
endpoint to be checked
DESCRIPTION
Returns true if the endpoint has bulk transfer type and IN direction, otherwise it returns false.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_ENDPOINT_IS_BULK(9)
Check Out this Related Man Page
STRUCT USB_EP(9) Kernel Mode Gadget API STRUCT USB_EP(9)NAME
struct_usb_ep - device side representation of USB endpoint
SYNOPSIS
struct usb_ep {
void * driver_data;
const char * name;
const struct usb_ep_ops * ops;
struct list_head ep_list;
unsigned maxpacket:16;
unsigned max_streams:16;
unsigned mult:2;
unsigned maxburst:5;
u8 address;
const struct usb_endpoint_descriptor * desc;
const struct usb_ss_ep_comp_descriptor * comp_desc;
};
MEMBERS
driver_data
for use by the gadget driver.
name
identifier for the endpoint, such as "ep-a" or "ep9in-bulk"
ops
Function pointers used to access hardware-specific operations.
ep_list
the gadget's ep_list holds all of its endpoints
maxpacket
The maximum packet size used on this endpoint. The initial value can sometimes be reduced (hardware allowing), according to the
endpoint descriptor used to configure the endpoint.
max_streams
The maximum number of streams supported by this EP (0 - 16, actual number is 2^n)
mult
multiplier, 'mult' value for SS Isoc EPs
maxburst
the maximum number of bursts supported by this EP (for usb3)
address
used to identify the endpoint when finding descriptor that matches connection speed
desc
endpoint descriptor. This pointer is set before the endpoint is enabled and remains valid until the endpoint is disabled.
comp_desc
In case of SuperSpeed support, this is the endpoint companion descriptor that is used to configure the endpoint
DESCRIPTION
the bus controller driver lists all the general purpose endpoints in gadget->ep_list. the control endpoint (gadget->ep0) is not in that
list, and is accessed only in response to a driver setup callback.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 STRUCT USB_EP(9)
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