diff options
| author | Wesley Cheng <wcheng@codeaurora.org> | 2021-07-10 02:13:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-12 09:37:25 +0200 |
| commit | ce7d0008c2356626f69f37ef1afce8fbc83fe142 (patch) | |
| tree | 303d36dde760b4e0f5a982b319e27391a937bc49 /include/linux/usb | |
| parent | e73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff) | |
| download | linux-next-ce7d0008c2356626f69f37ef1afce8fbc83fe142.tar.gz | |
usb: gadget: udc: core: Introduce check_config to verify USB configuration
Some UDCs may have constraints on how many high bandwidth endpoints it can
support in a certain configuration. This API allows for the composite
driver to pass down the total number of endpoints to the UDC so it can verify
it has the required resources to support the configuration.
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-2-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/gadget.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 75c7538e350a..776851e57741 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -329,6 +329,7 @@ struct usb_gadget_ops { struct usb_ep *(*match_ep)(struct usb_gadget *, struct usb_endpoint_descriptor *, struct usb_ss_ep_comp_descriptor *); + int (*check_config)(struct usb_gadget *gadget); }; /** @@ -608,6 +609,7 @@ int usb_gadget_connect(struct usb_gadget *gadget); int usb_gadget_disconnect(struct usb_gadget *gadget); int usb_gadget_deactivate(struct usb_gadget *gadget); int usb_gadget_activate(struct usb_gadget *gadget); +int usb_gadget_check_config(struct usb_gadget *gadget); #else static inline int usb_gadget_frame_number(struct usb_gadget *gadget) { return 0; } @@ -631,6 +633,8 @@ static inline int usb_gadget_deactivate(struct usb_gadget *gadget) { return 0; } static inline int usb_gadget_activate(struct usb_gadget *gadget) { return 0; } +static inline int usb_gadget_check_config(struct usb_gadget *gadget) +{ return 0; } #endif /* CONFIG_USB_GADGET */ /*-------------------------------------------------------------------------*/ |