tty: n_gsm line discipline

	  Allows synchronous HDLC communications with tty device drivers that

	  support synchronous HDLC such as the Microgate SyncLink adapter.

	  This driver can only be built as a module ( = code which can be

	  This driver can be built as a module ( = code which can be

	  inserted in and removed from the running kernel whenever you want).

	  The module will be called n_hdlc. If you want to do that, say M

	  here.

config N_GSM

	tristate "GSM MUX line discipline support (EXPERIMENTAL)"

	depends on EXPERIMENTAL

	help

	  This line discipline provides support for the GSM MUX protocol and

	  presents the mux as a set of 61 individual tty devices.

config RISCOM8

	tristate "SDL RISCom/8 card support"

	depends on SERIAL_NONSTANDARD

obj-$(CONFIG_SYNCLINKMP)	+= synclinkmp.o

obj-$(CONFIG_SYNCLINK_GT)	+= synclink_gt.o

obj-$(CONFIG_N_HDLC)		+= n_hdlc.o

obj-$(CONFIG_N_GSM)		+= n_gsm.o

obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o

obj-$(CONFIG_SX)		+= sx.o generic_serial.o

obj-$(CONFIG_RIO)		+= rio/ generic_serial.o

#ifndef _LINUX_GSMMUX_H

#define _LINUX_GSMMUX_H

struct gsm_config

{

	unsigned int adaption;

	unsigned int encapsulation;

	unsigned int initiator;

	unsigned int t1;

	unsigned int t2;

	unsigned int t3;

	unsigned int n2;

	unsigned int mru;

	unsigned int mtu;

	unsigned int k;

	unsigned int i;

	unsigned int unused[8];		/* Padding for expansion without

					   breaking stuff */

};

#define GSMIOC_GETCONF		_IOR('G', 0, struct gsm_config)

#define GSMIOC_SETCONF		_IOW('G', 1, struct gsm_config)

#endif

#define N_PPS		18	/* Pulse per Second */

#define N_V253		19	/* Codec control over voice modem */

#define N_CAIF		20      /* CAIF protocol for talking to modems */

#define N_GSM0710	21	/* GSM 0710 Mux */

/*

 * This character is the same as _POSIX_VDISABLE: it cannot be used as