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usb: gadget: add SuperSpeed support to the Gadget Framework

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SuperSpeed USB has defined a new descriptor, called
the Binary Device Object Store (BOS) Descriptor. It
has also changed a bit the definition of SET_FEATURE
and GET_STATUS requests to add USB3-specific details.

This patch implements both changes to the Composite
Gadget Framework.

[ balbi@ti.com : slight changes to commit log
		 fixed a compile error on ARM ]

Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tatyana Brokhman 2011-06-29 16:41:50 +03:00 • committed by Greg Kroah-Hartman
parent 35a0e0bf6f
commit bdb64d7272
5 changed files with 293 additions and 21 deletions
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14
include/linux/usb/composite.h
View file

@ -59,6 +59,10 @@ struct usb_configuration;
* @hs_descriptors: Table of high speed descriptors, using interface and
* string identifiers assigned during @bind(). If this pointer is null,
* the function will not be available at high speed.
* @ss_descriptors: Table of super speed descriptors, using interface and
* string identifiers assigned during @bind(). If this
* pointer is null after initiation, the function will not
* be available at super speed.
* @config: assigned when @usb_add_function() is called; this is the
* configuration with which this function is associated.
* @bind: Before the gadget can register, all of its functions bind() to the
@ -77,6 +81,10 @@ struct usb_configuration;
* @setup: Used for interface-specific control requests.
* @suspend: Notifies functions when the host stops sending USB traffic.
* @resume: Notifies functions when the host restarts USB traffic.
* @get_status: Returns function status as a reply to
* GetStatus() request when the recepient is Interface.
* @func_suspend: callback to be called when
* SetFeature(FUNCTION_SUSPEND) is reseived
*
* A single USB function uses one or more interfaces, and should in most
* cases support operation at both full and high speeds. Each function is
@ -106,6 +114,7 @@ struct usb_function {
struct usb_gadget_strings **strings;
struct usb_descriptor_header **descriptors;
struct usb_descriptor_header **hs_descriptors;
struct usb_descriptor_header **ss_descriptors;
struct usb_configuration *config;
@ -132,6 +141,10 @@ struct usb_function {
void (*suspend)(struct usb_function *);
void (*resume)(struct usb_function *);
/* USB 3.0 additions */
int (*get_status)(struct usb_function *);
int (*func_suspend)(struct usb_function *,
u8 suspend_opt);
/* private: */
/* internals */
struct list_head list;
@ -219,6 +232,7 @@ struct usb_configuration {
struct list_head list;
struct list_head functions;
u8 next_interface_id;
unsigned superspeed:1;
unsigned highspeed:1;
unsigned fullspeed:1;
struct usb_function *interface[MAX_CONFIG_INTERFACES];