diff options
Diffstat (limited to 'drivers/usb/gadget/gadget_chips.h')
| -rw-r--r-- | drivers/usb/gadget/gadget_chips.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index ca5149ea731..5246e8fef2b 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -214,3 +214,26 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) return 0x21; return -ENOENT; } + + +/** + * gadget_supports_altsettings - return true if altsettings work + * @gadget: the gadget in question + */ +static inline bool gadget_supports_altsettings(struct usb_gadget *gadget) +{ + /* PXA 21x/25x/26x has no altsettings at all */ + if (gadget_is_pxa(gadget)) + return false; + + /* PXA 27x and 3xx have *broken* altsetting support */ + if (gadget_is_pxa27x(gadget)) + return false; + + /* SH3 hardware just doesn't do altsettings */ + if (gadget_is_sh(gadget)) + return false; + + /* Everything else is *presumably* fine ... */ + return true; +} |