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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/isdn/capi/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
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+config ISDN_CAPI
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+	def_bool ISDN && BT
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+	help
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+	  This provides CAPI (the Common ISDN Application Programming
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+	  Interface) Version 2.0, a standard making it easy for programs to
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+	  access ISDN hardware in a device independent way. (For details see
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+	  <https://www.capi.org/>.)  CAPI supports making and accepting voice
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+	  and data connections, controlling call options and protocols,
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+	  as well as ISDN supplementary services like call forwarding or
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+	  three-party conferences (if supported by the specific hardware
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+	  driver).
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+
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+	  This subsystem requires a hardware specific driver.
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+	  See CONFIG_BT_CMTP for the last remaining regular driver
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+	  in the kernel that uses the CAPI subsystem.
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+
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 config CAPI_TRACE
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-	bool "CAPI trace support"
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-	default y
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+	def_bool BT_CMTP
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 	help
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 	  If you say Y here, the kernelcapi driver can make verbose traces
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 	  of CAPI messages. This feature can be enabled/disabled via IOCTL for
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 	  every controller (default disabled).
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-	  This will increase the size of the kernelcapi module by 20 KB.
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-	  If unsure, say Y.
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-
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-config ISDN_CAPI_CAPI20
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-	tristate "CAPI2.0 /dev/capi20 support"
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-	help
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-	  This option will provide the CAPI 2.0 interface to userspace
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-	  applications via /dev/capi20. Applications should use the
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-	  standardized libcapi20 to access this functionality.  You should say
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-	  Y/M here.
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 config ISDN_CAPI_MIDDLEWARE
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-	bool "CAPI2.0 Middleware support"
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-	depends on ISDN_CAPI_CAPI20 && TTY
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+	def_bool BT_CMTP && TTY
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 	help
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 	  This option will enhance the capabilities of the /dev/capi20
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 	  interface.  It will provide a means of moving a data connection,
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 	  established via the usual /dev/capi20 interface to a special tty
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 	  device.  If you want to use pppd with pppdcapiplugin to dial up to
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 	  your ISP, say Y here.
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-
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-config ISDN_CAPI_CAPIDRV
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-	tristate "CAPI2.0 capidrv interface support"
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-	depends on ISDN_I4L
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-	help
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-	  This option provides the glue code to hook up CAPI driven cards to
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-	  the legacy isdn4linux link layer.  If you have a card which is
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-	  supported by a CAPI driver, but still want to use old features like
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-	  ippp interfaces or ttyI emulation, say Y/M here.
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-
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-config ISDN_CAPI_CAPIDRV_VERBOSE
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-	bool "Verbose reason code reporting"
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-	depends on ISDN_CAPI_CAPIDRV
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-	help
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-	  If you say Y here, the capidrv interface will give verbose reasons
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-	  for disconnecting. This will increase the size of the kernel by 7 KB.
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-	  If unsure, say N.