usb: xceiv: create nop-usb-xceiv.h and avoid pollution on otg.h

nop-usb-xceiv was polluting otg.h with its own
function prototypes. Move those prototypes to
a nop-usb-xceiv.h header.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/linux/usb/nop-usb-xceiv.h b/include/linux/usb/nop-usb-xceiv.h
new file mode 100644
index 000000000000..ecc7562a38cc
--- /dev/null
+++ b/include/linux/usb/nop-usb-xceiv.h
@@ -0,0 +1,18 @@
+#ifndef __LINUX_USB_NOP_XCEIV_H
+#define __LINUX_USB_NOP_XCEIV_H
+
+#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
+/* sometimes transceivers are accessed only through e.g. ULPI */
+extern void usb_nop_xceiv_register(void);
+extern void usb_nop_xceiv_unregister(void);
+#else
+static inline void usb_nop_xceiv_register(void)
+{
+}
+
+static inline void usb_nop_xceiv_unregister(void)
+{
+}
+#endif
+
+#endif /* __LINUX_USB_NOP_XCEIV_H */