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      1 #ifndef _LINUX_TTY_H
      2 #define _LINUX_TTY_H
      3 
      4 /*
      5  * 'tty.h' defines some structures used by tty_io.c and some defines.
      6  */
      7 
      8 #define NR_LDISCS		30
      9 
     10 /* line disciplines */
     11 #define N_TTY		0
     12 #define N_SLIP		1
     13 #define N_MOUSE		2
     14 #define N_PPP		3
     15 #define N_STRIP		4
     16 #define N_AX25		5
     17 #define N_X25		6	/* X.25 async */
     18 #define N_6PACK		7
     19 #define N_MASC		8	/* Reserved for Mobitex module <kaz (at) cafe.net> */
     20 #define N_R3964		9	/* Reserved for Simatic R3964 module */
     21 #define N_PROFIBUS_FDL	10	/* Reserved for Profibus */
     22 #define N_IRDA		11	/* Linux IrDa - http://irda.sourceforge.net/ */
     23 #define N_SMSBLOCK	12	/* SMS block mode - for talking to GSM data */
     24 				/* cards about SMS messages */
     25 #define N_HDLC		13	/* synchronous HDLC */
     26 #define N_SYNC_PPP	14	/* synchronous PPP */
     27 #define N_HCI		15	/* Bluetooth HCI UART */
     28 #define N_GIGASET_M101	16	/* Siemens Gigaset M101 serial DECT adapter */
     29 #define N_SLCAN		17	/* Serial / USB serial CAN Adaptors */
     30 #define N_PPS		18	/* Pulse per Second */
     31 #define N_V253		19	/* Codec control over voice modem */
     32 #define N_CAIF		20      /* CAIF protocol for talking to modems */
     33 #define N_GSM0710	21	/* GSM 0710 Mux */
     34 #define N_TI_WL		22	/* for TI's WL BT, FM, GPS combo chips */
     35 #define N_TRACESINK	23	/* Trace data routing for MIPI P1149.7 */
     36 #define N_TRACEROUTER	24	/* Trace data routing for MIPI P1149.7 */
     37 
     38 #endif
     39