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      1 #ifndef _LINUX_TTY_FLAGS_H
      2 #define _LINUX_TTY_FLAGS_H
      3 
      4 /*
      5  * Definitions for async_struct (and serial_struct) flags field also
      6  * shared by the tty_port flags structures.
      7  *
      8  * Define ASYNCB_* for convenient use with {test,set,clear}_bit.
      9  *
     10  * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable
     11  * [x] in the bit comments indicates the flag is defunct and no longer used.
     12  */
     13 #define ASYNCB_HUP_NOTIFY	 0 /* Notify getty on hangups and closes
     14 				    * on the callout port */
     15 #define ASYNCB_FOURPORT		 1 /* Set OU1, OUT2 per AST Fourport settings */
     16 #define ASYNCB_SAK		 2 /* Secure Attention Key (Orange book) */
     17 #define ASYNCB_SPLIT_TERMIOS	 3 /* [x] Separate termios for dialin/callout */
     18 #define ASYNCB_SPD_HI		 4 /* Use 57600 instead of 38400 bps */
     19 #define ASYNCB_SPD_VHI		 5 /* Use 115200 instead of 38400 bps */
     20 #define ASYNCB_SKIP_TEST	 6 /* Skip UART test during autoconfiguration */
     21 #define ASYNCB_AUTO_IRQ		 7 /* Do automatic IRQ during
     22 				    * autoconfiguration */
     23 #define ASYNCB_SESSION_LOCKOUT	 8 /* [x] Lock out cua opens based on session */
     24 #define ASYNCB_PGRP_LOCKOUT	 9 /* [x] Lock out cua opens based on pgrp */
     25 #define ASYNCB_CALLOUT_NOHUP	10 /* [x] Don't do hangups for cua device */
     26 #define ASYNCB_HARDPPS_CD	11 /* Call hardpps when CD goes high  */
     27 #define ASYNCB_SPD_SHI		12 /* Use 230400 instead of 38400 bps */
     28 #define ASYNCB_LOW_LATENCY	13 /* Request low latency behaviour */
     29 #define ASYNCB_BUGGY_UART	14 /* This is a buggy UART, skip some safety
     30 				    * checks.  Note: can be dangerous! */
     31 #define ASYNCB_AUTOPROBE	15 /* [x] Port was autoprobed by PCI/PNP code */
     32 #define ASYNCB_MAGIC_MULTIPLIER	16 /* Use special CLK or divisor */
     33 #define ASYNCB_LAST_USER	16
     34 
     35 /* Internal flags used only by kernel */
     36 #define ASYNCB_INITIALIZED	31 /* Serial port was initialized */
     37 #define ASYNCB_SUSPENDED	30 /* Serial port is suspended */
     38 #define ASYNCB_NORMAL_ACTIVE	29 /* Normal device is active */
     39 #define ASYNCB_BOOT_AUTOCONF	28 /* Autoconfigure port on bootup */
     40 #define ASYNCB_CLOSING		27 /* Serial port is closing */
     41 #define ASYNCB_CTS_FLOW		26 /* Do CTS flow control */
     42 #define ASYNCB_CHECK_CD		25 /* i.e., CLOCAL */
     43 #define ASYNCB_SHARE_IRQ	24 /* for multifunction cards, no longer used */
     44 #define ASYNCB_CONS_FLOW	23 /* flow control for console  */
     45 #define ASYNCB_FIRST_KERNEL	22
     46 
     47 #define ASYNC_HUP_NOTIFY	(1U << ASYNCB_HUP_NOTIFY)
     48 #define ASYNC_SUSPENDED		(1U << ASYNCB_SUSPENDED)
     49 #define ASYNC_FOURPORT		(1U << ASYNCB_FOURPORT)
     50 #define ASYNC_SAK		(1U << ASYNCB_SAK)
     51 #define ASYNC_SPLIT_TERMIOS	(1U << ASYNCB_SPLIT_TERMIOS)
     52 #define ASYNC_SPD_HI		(1U << ASYNCB_SPD_HI)
     53 #define ASYNC_SPD_VHI		(1U << ASYNCB_SPD_VHI)
     54 #define ASYNC_SKIP_TEST		(1U << ASYNCB_SKIP_TEST)
     55 #define ASYNC_AUTO_IRQ		(1U << ASYNCB_AUTO_IRQ)
     56 #define ASYNC_SESSION_LOCKOUT	(1U << ASYNCB_SESSION_LOCKOUT)
     57 #define ASYNC_PGRP_LOCKOUT	(1U << ASYNCB_PGRP_LOCKOUT)
     58 #define ASYNC_CALLOUT_NOHUP	(1U << ASYNCB_CALLOUT_NOHUP)
     59 #define ASYNC_HARDPPS_CD	(1U << ASYNCB_HARDPPS_CD)
     60 #define ASYNC_SPD_SHI		(1U << ASYNCB_SPD_SHI)
     61 #define ASYNC_LOW_LATENCY	(1U << ASYNCB_LOW_LATENCY)
     62 #define ASYNC_BUGGY_UART	(1U << ASYNCB_BUGGY_UART)
     63 #define ASYNC_AUTOPROBE		(1U << ASYNCB_AUTOPROBE)
     64 #define ASYNC_MAGIC_MULTIPLIER	(1U << ASYNCB_MAGIC_MULTIPLIER)
     65 
     66 #define ASYNC_FLAGS		((1U << (ASYNCB_LAST_USER + 1)) - 1)
     67 #define ASYNC_DEPRECATED	(ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \
     68 		ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
     69 #define ASYNC_USR_MASK		(ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
     70 		ASYNC_LOW_LATENCY)
     71 #define ASYNC_SPD_CUST		(ASYNC_SPD_HI|ASYNC_SPD_VHI)
     72 #define ASYNC_SPD_WARP		(ASYNC_SPD_HI|ASYNC_SPD_SHI)
     73 #define ASYNC_SPD_MASK		(ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
     74 
     75 #define ASYNC_INITIALIZED	(1U << ASYNCB_INITIALIZED)
     76 #define ASYNC_NORMAL_ACTIVE	(1U << ASYNCB_NORMAL_ACTIVE)
     77 #define ASYNC_BOOT_AUTOCONF	(1U << ASYNCB_BOOT_AUTOCONF)
     78 #define ASYNC_CLOSING		(1U << ASYNCB_CLOSING)
     79 #define ASYNC_CTS_FLOW		(1U << ASYNCB_CTS_FLOW)
     80 #define ASYNC_CHECK_CD		(1U << ASYNCB_CHECK_CD)
     81 #define ASYNC_SHARE_IRQ		(1U << ASYNCB_SHARE_IRQ)
     82 #define ASYNC_CONS_FLOW		(1U << ASYNCB_CONS_FLOW)
     83 #define ASYNC_INTERNAL_FLAGS	(~((1U << ASYNCB_FIRST_KERNEL) - 1))
     84 
     85 #endif
     86