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Commit 70beaed2 authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds
Browse files

serial: refactor ASYNC_ flags 



Define ASYNCB_* flags which are bit numbers of the ASYNC_* flags.
This is useful for {test,set,clear}_bit.

Also convert each ASYNC_% to be (1 << ASYNCB_%) and define masks
with the macros, not constants.

Tested with:
#include "PATH_TO_KERNEL/include/linux/serial.h"
static struct {
        unsigned int new, old;
} as[] = {
        { ASYNC_HUP_NOTIFY, 0x0001 },
        { ASYNC_FOURPORT, 0x0002 },
...
	{ ASYNC_BOOT_ONLYMCA, 0x00400000 },
        { ASYNC_INTERNAL_FLAGS, 0xFFC00000 }
};
...
        for (a = 0; a < ARRAY_SIZE(as); a++)
                if (as[a].old != as[a].new)
                        printf("%.8x != %.8x\n", as[a].old, as[a].new);

Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6e47e069

include/linux/serial.h

+69 −47
Original line number Diff line number Diff line
@@ -96,54 +96,76 @@ struct serial_uart_config { 


/*

 * Definitions for async_struct (and serial_struct) flags field

 *

 * Define ASYNCB_* for convenient use with {test,set,clear}_bit.

 */

#define ASYNC_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes 

				   on the callout port */

#define ASYNC_FOURPORT  0x0002	/* Set OU1, OUT2 per AST Fourport settings */

#define ASYNC_SAK	0x0004	/* Secure Attention Key (Orange book) */

#define ASYNC_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */



#define ASYNC_SPD_MASK	0x1030

#define ASYNC_SPD_HI	0x0010	/* Use 56000 instead of 38400 bps */



#define ASYNC_SPD_VHI	0x0020  /* Use 115200 instead of 38400 bps */

#define ASYNC_SPD_CUST	0x0030  /* Use user-specified divisor */



#define ASYNC_SKIP_TEST	0x0040 /* Skip UART test during autoconfiguration */

#define ASYNC_AUTO_IRQ  0x0080 /* Do automatic IRQ during autoconfiguration */

#define ASYNC_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */

#define ASYNC_PGRP_LOCKOUT    0x0200 /* Lock out cua opens based on pgrp */

#define ASYNC_CALLOUT_NOHUP   0x0400 /* Don't do hangups for cua device */



#define ASYNC_HARDPPS_CD	0x0800	/* Call hardpps when CD goes high  */



#define ASYNC_SPD_SHI	0x1000	/* Use 230400 instead of 38400 bps */

#define ASYNC_SPD_WARP	0x1010	/* Use 460800 instead of 38400 bps */



#define ASYNC_LOW_LATENCY 0x2000 /* Request low latency behaviour */



#define ASYNC_BUGGY_UART  0x4000 /* This is a buggy UART, skip some safety

#define ASYNCB_HUP_NOTIFY	 0 /* Notify getty on hangups and closes

				    * on the callout port */

#define ASYNCB_FOURPORT		 1 /* Set OU1, OUT2 per AST Fourport settings */

#define ASYNCB_SAK		 2 /* Secure Attention Key (Orange book) */

#define ASYNCB_SPLIT_TERMIOS	 3 /* Separate termios for dialin/callout */

#define ASYNCB_SPD_HI		 4 /* Use 56000 instead of 38400 bps */

#define ASYNCB_SPD_VHI		 5 /* Use 115200 instead of 38400 bps */

#define ASYNCB_SKIP_TEST	 6 /* Skip UART test during autoconfiguration */

#define ASYNCB_AUTO_IRQ		 7 /* Do automatic IRQ during

				    * autoconfiguration */

#define ASYNCB_SESSION_LOCKOUT	 8 /* Lock out cua opens based on session */

#define ASYNCB_PGRP_LOCKOUT	 9 /* Lock out cua opens based on pgrp */

#define ASYNCB_CALLOUT_NOHUP	10 /* Don't do hangups for cua device */

#define ASYNCB_HARDPPS_CD	11 /* Call hardpps when CD goes high  */

#define ASYNCB_SPD_SHI		12 /* Use 230400 instead of 38400 bps */

#define ASYNCB_LOW_LATENCY	13 /* Request low latency behaviour */

#define ASYNCB_BUGGY_UART	14 /* This is a buggy UART, skip some safety

				    * checks.  Note: can be dangerous! */



#define ASYNC_AUTOPROBE	 0x8000 /* Port was autoprobed by PCI or PNP code */



#define ASYNC_FLAGS	0x7FFF	/* Possible legal async flags */

#define ASYNC_USR_MASK	0x3430	/* Legal flags that non-privileged

				 * users can set or reset */



/* Internal flags used only by kernel/chr_drv/serial.c */

#define ASYNC_INITIALIZED	0x80000000 /* Serial port was initialized */

#define ASYNC_NORMAL_ACTIVE	0x20000000 /* Normal device is active */

#define ASYNC_BOOT_AUTOCONF	0x10000000 /* Autoconfigure port on bootup */

#define ASYNC_CLOSING		0x08000000 /* Serial port is closing */

#define ASYNC_CTS_FLOW		0x04000000 /* Do CTS flow control */

#define ASYNC_CHECK_CD		0x02000000 /* i.e., CLOCAL */

#define ASYNC_SHARE_IRQ		0x01000000 /* for multifunction cards

					     --- no longer used */

#define ASYNC_CONS_FLOW		0x00800000 /* flow control for console  */



#define ASYNC_BOOT_ONLYMCA	0x00400000 /* Probe only if MCA bus */

#define ASYNC_INTERNAL_FLAGS	0xFFC00000 /* Internal flags */

#define ASYNCB_AUTOPROBE	15 /* Port was autoprobed by PCI or PNP code */

#define ASYNCB_LAST_USER	15



/* Internal flags used only by kernel */

#define ASYNCB_INITIALIZED	31 /* Serial port was initialized */

#define ASYNCB_NORMAL_ACTIVE	29 /* Normal device is active */

#define ASYNCB_BOOT_AUTOCONF	28 /* Autoconfigure port on bootup */

#define ASYNCB_CLOSING		27 /* Serial port is closing */

#define ASYNCB_CTS_FLOW		26 /* Do CTS flow control */

#define ASYNCB_CHECK_CD		25 /* i.e., CLOCAL */

#define ASYNCB_SHARE_IRQ	24 /* for multifunction cards, no longer used */

#define ASYNCB_CONS_FLOW	23 /* flow control for console  */

#define ASYNCB_BOOT_ONLYMCA	22 /* Probe only if MCA bus */

#define ASYNCB_FIRST_KERNEL	22



#define ASYNC_HUP_NOTIFY	(1U << ASYNCB_HUP_NOTIFY)

#define ASYNC_FOURPORT		(1U << ASYNCB_FOURPORT)

#define ASYNC_SAK		(1U << ASYNCB_SAK)

#define ASYNC_SPLIT_TERMIOS	(1U << ASYNCB_SPLIT_TERMIOS)

#define ASYNC_SPD_HI		(1U << ASYNCB_SPD_HI)

#define ASYNC_SPD_VHI		(1U << ASYNCB_SPD_VHI)

#define ASYNC_SKIP_TEST		(1U << ASYNCB_SKIP_TEST)

#define ASYNC_AUTO_IRQ		(1U << ASYNCB_AUTO_IRQ)

#define ASYNC_SESSION_LOCKOUT	(1U << ASYNCB_SESSION_LOCKOUT)

#define ASYNC_PGRP_LOCKOUT	(1U << ASYNCB_PGRP_LOCKOUT)

#define ASYNC_CALLOUT_NOHUP	(1U << ASYNCB_CALLOUT_NOHUP)

#define ASYNC_HARDPPS_CD	(1U << ASYNCB_HARDPPS_CD)

#define ASYNC_SPD_SHI		(1U << ASYNCB_SPD_SHI)

#define ASYNC_LOW_LATENCY	(1U << ASYNCB_LOW_LATENCY)

#define ASYNC_BUGGY_UART	(1U << ASYNCB_BUGGY_UART)

#define ASYNC_AUTOPROBE		(1U << ASYNCB_AUTOPROBE)



#define ASYNC_FLAGS		((1U << ASYNCB_LAST_USER) - 1)

#define ASYNC_USR_MASK		(ASYNC_SPD_HI|ASYNC_SPD_VHI| \

		ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY)

#define ASYNC_SPD_CUST		(ASYNC_SPD_HI|ASYNC_SPD_VHI)

#define ASYNC_SPD_WARP		(ASYNC_SPD_HI|ASYNC_SPD_SHI)

#define ASYNC_SPD_MASK		(ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)



#define ASYNC_INITIALIZED	(1U << ASYNCB_INITIALIZED)

#define ASYNC_NORMAL_ACTIVE	(1U << ASYNCB_NORMAL_ACTIVE)

#define ASYNC_BOOT_AUTOCONF	(1U << ASYNCB_BOOT_AUTOCONF)

#define ASYNC_CLOSING		(1U << ASYNCB_CLOSING)

#define ASYNC_CTS_FLOW		(1U << ASYNCB_CTS_FLOW)

#define ASYNC_CHECK_CD		(1U << ASYNCB_CHECK_CD)

#define ASYNC_SHARE_IRQ		(1U << ASYNCB_SHARE_IRQ)

#define ASYNC_CONS_FLOW		(1U << ASYNCB_CONS_FLOW)

#define ASYNC_BOOT_ONLYMCA	(1U << ASYNCB_BOOT_ONLYMCA)

#define ASYNC_INTERNAL_FLAGS	(~((1U << ASYNCB_FIRST_KERNEL) - 1))



/*

 * Multiport serial configuration structure --- external structure