Documentation/isdn/INTERFACE.CAPI

isdn: document Kernel CAPI driver interface

Create a file Documentation/isdn/INTERFACE.CAPI describing the
interface between the kernel CAPI subsystem and ISDN device drivers,
analogous to the existing Documentation/isdn/INTERFACE for the old
isdn4linux subsystem. Also add kerneldoc comments to the exported
functions in drivers/isdn/capi/kcapi.c.

Impact: Documentation
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/isdn/00-INDEX b/Documentation/isdn/00-INDEX
index d9660ee..5a2d699 100644
--- a/Documentation/isdn/00-INDEX
+++ b/Documentation/isdn/00-INDEX
@@ -8,6 +8,8 @@
 	- description of isdn4linux Link Level and Hardware Level interfaces.
 INTERFACE.fax
 	- description of the fax subinterface of isdn4linux.
+INTERFACE.CAPI
+	- description of kernel CAPI Link Level to Hardware Level interface.
 README
 	- general info on what you need and what to do for Linux ISDN.
 README.FAQ