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Make the relationship between modem control bits and their delta cousins

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This commit is contained in:
Poul-Henning Kamp 2004-06-25 10:56:43 +00:00
parent 4550ad5b99
commit f1cd2fdf61
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131097
1 changed files with 11 additions and 9 deletions
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20
sys/sys/serial.h
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@ -38,7 +38,7 @@
* Indentification of modem control signals. These definitions match
* the TIOCMGET definitions in <sys/ttycom.h> shifted a bit down, and
* that identity is enforced with CTASSERT at the bottom of kern/tty.c
* Both the modem bits and delta bits must fit in 16 bit!
* Both the modem bits and delta bits must fit in 16 bit.
*/
#define SER_DTR 0x0001 /* data terminal ready */
#define SER_RTS 0x0002 /* request to send */
@ -50,13 +50,15 @@
#define SER_DSR 0x0080 /* data set ready */
/* Delta bits, used to indicate which signals should/was affected */
#define SER_DDTR (SER_DTR << 8)
#define SER_DRTS (SER_RTS << 8)
#define SER_DSTX (SER_STX << 8)
#define SER_DSRX (SER_SRX << 8)
#define SER_DCTS (SER_CTS << 8)
#define SER_DDCD (SER_DCD << 8)
#define SER_DRI (SER_RI << 8)
#define SER_DDSR (SER_DSR << 8)
#define SER_DELTA(x) ((x) << 8)
#define SER_DDTR SER_DELTA(SER_DTR)
#define SER_DRTS SER_DELTA(SER_RTS)
#define SER_DSTX SER_DELTA(SER_STX)
#define SER_DSRX SER_DELTA(SER_SRX)
#define SER_DCTS SER_DELTA(SER_CTS)
#define SER_DDCD SER_DELTA(SER_DCD)
#define SER_DRI SER_DELTA(SER_RI)
#define SER_DDSR SER_DELTA(SER_DSR)
#endif /* !_SYS_SERIAL_H_ */