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usb: gadget: Update function for SuperSpeedPlus

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Add a ssp_descriptors member to struct usb_function and handle the
initialization and cleanup of it. This holds the SuperSpeedPlus
descriptors for a function that supports SuperSpeedPlus. This is added
by usb_assign_descriptors().

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
John Youn 2016-02-05 17:06:21 -08:00 committed by Felipe Balbi
parent eaef50c760
commit f5c61225cf
2 changed files with 11 additions and 0 deletions
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6
drivers/usb/gadget/config.c
View File

@ -183,6 +183,11 @@ int usb_assign_descriptors(struct usb_function *f,
if (!f->ss_descriptors)
goto err;
}
if (ssp && gadget_is_superspeed_plus(g)) {
f->ssp_descriptors = usb_copy_descriptors(ssp);
if (!f->ssp_descriptors)
goto err;
}
return 0;
err:
usb_free_all_descriptors(f);
@ -195,6 +200,7 @@ void usb_free_all_descriptors(struct usb_function *f)
usb_free_descriptors(f->fs_descriptors);
usb_free_descriptors(f->hs_descriptors);
usb_free_descriptors(f->ss_descriptors);
usb_free_descriptors(f->ssp_descriptors);
}
EXPORT_SYMBOL_GPL(usb_free_all_descriptors);

5
include/linux/usb/composite.h
View File

@ -126,6 +126,10 @@ struct usb_os_desc_table {
* string identifiers assigned during @bind(). If this
* pointer is null after initiation, the function will not
* be available at super speed.
* @ssp_descriptors: Table of super speed plus 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 plus.
* @config: assigned when @usb_add_function() is called; this is the
* configuration with which this function is associated.
* @os_desc_table: Table of (interface id, os descriptors) pairs. The function
@ -186,6 +190,7 @@ struct usb_function {
struct usb_descriptor_header **fs_descriptors;
struct usb_descriptor_header **hs_descriptors;
struct usb_descriptor_header **ss_descriptors;
struct usb_descriptor_header **ssp_descriptors;
struct usb_configuration *config;