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authorArnd Bergmann <arnd@arndb.de>2019-04-20 23:28:45 +0300
committerArnd Bergmann <arnd@arndb.de>2019-05-31 12:17:41 +0300
commit6d97985072dc270032dc7a08631080bfd6253e82 (patch)
treeb11f1ee9bcd819e63c84306032a5ff7c5ad90791 /drivers/isdn/capi
parent99c2aa151a7182c58f9477a376304c538d9cc5ab (diff)
downloadlinux-6d97985072dc270032dc7a08631080bfd6253e82.tar.xz
isdn: move capi drivers to staging
I tried to find any indication of whether the capi drivers are still in use, and have not found anything from a long time ago. With public ISDN networks almost completely shut down over the past 12 months, there is very little you can actually do with this hardware. The main remaining use case would be to connect ISDN voice phones to an in-house installation with Asterisk or LCR, but anyone trying this in turn seems to be using either the mISDN driver stack, or out-of-tree drivers from the hardware vendors. I may of course have missed something, so I would suggest moving these three drivers (avm, hysdn, gigaset) into drivers/staging/ just in case someone still uses them. If nobody complains, we can remove them entirely in six months, or otherwise move the core code and any drivers that are still needed back into drivers/isdn. As Paul Bolle notes, he is still testing the gigaset driver as long as he can, but the Dutch ISDN network will be shut down in September 2019, which puts an end to that. Marcel Holtmann still maintains the Bluetooth CMTP profile and wants to keep that alive, so the actual CAPI subsystem code remains in place for now, after all other drivers are gone, CMTP and CAPI can be merged into a single driver directory. Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/isdn/capi')
-rw-r--r--drivers/isdn/capi/Kconfig20
-rw-r--r--drivers/isdn/capi/Makefile2
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig
index 089dbee18f36..573fea5500ce 100644
--- a/drivers/isdn/capi/Kconfig
+++ b/drivers/isdn/capi/Kconfig
@@ -1,4 +1,22 @@
# SPDX-License-Identifier: GPL-2.0-only
+menuconfig ISDN_CAPI
+ tristate "CAPI 2.0 subsystem"
+ help
+ This provides CAPI (the Common ISDN Application Programming
+ Interface) Version 2.0, a standard making it easy for programs to
+ access ISDN hardware in a device independent way. (For details see
+ <http://www.capi.org/>.) CAPI supports making and accepting voice
+ and data connections, controlling call options and protocols,
+ as well as ISDN supplementary services like call forwarding or
+ three-party conferences (if supported by the specific hardware
+ driver).
+
+ This subsystem requires a hardware specific driver.
+ See CONFIG_BT_CMTP for the last remaining regular driver
+ in the kernel that uses the CAPI subsystem.
+
+if ISDN_CAPI
+
config CAPI_TRACE
bool "CAPI trace support"
default y
@@ -34,3 +52,5 @@ config ISDN_CAPI_CAPIDRV_VERBOSE
If you say Y here, the capidrv interface will give verbose reasons
for disconnecting. This will increase the size of the kernel by 7 KB.
If unsure, say N.
+
+endif
diff --git a/drivers/isdn/capi/Makefile b/drivers/isdn/capi/Makefile
index 06da3ed2c40a..d299f3e75f89 100644
--- a/drivers/isdn/capi/Makefile
+++ b/drivers/isdn/capi/Makefile
@@ -13,3 +13,5 @@ obj-$(CONFIG_ISDN_CAPI_CAPIDRV) += capidrv.o
kernelcapi-y := kcapi.o capiutil.o capilib.o
kernelcapi-$(CONFIG_PROC_FS) += kcapi_proc.o
+
+ccflags-y += -I$(srctree)/$(src)/../include -I$(srctree)/$(src)/../include/uapi