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ifdef for switching RTS/CTS off

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Change-Id: Iccc4b151b2047539dfd79ce0ff1381c0579539e9
This commit is contained in:
rlfnb 2016-02-06 21:08:50 +01:00 committed by Lionel Sambuc
parent 86b583c518
commit eaf726b35c
1 changed files with 23 additions and 1 deletions
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24
minix/drivers/tty/tty/arch/i386/rs232.c
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@ -11,6 +11,11 @@
#if NR_RS_LINES > 0 #if NR_RS_LINES > 0
/* switch RTS/CTS on/off */
#if !defined(UART_RTSCTS_OFF)
#define UART_RTSCTS_OFF 0 /* 0: Use RTS/CTS, 1: Don't.*/
#endif
/* 8250 constants. */ /* 8250 constants. */
#define UART_FREQ 115200L /* timer frequency */ #define UART_FREQ 115200L /* timer frequency */
@ -86,6 +91,18 @@
* dropped by close of the device). * dropped by close of the device).
* OUT2 is also kept high all the time. * OUT2 is also kept high all the time.
*/ */
#if UART_RTSCTS_OFF
#define istart(rs) \
(rs)->idevready = TRUE
#define istop(rs) \
(rs)->idevready = FALSE
/* Macro to tell if device is ready. The rs->cts field is set to MS_CTS if
* CLOCAL is in effect for a line without a CTS wire.
*/
#define devready(rs) MS_CTS
#else
#define istart(rs) \ #define istart(rs) \
(sys_outb((rs)->modem_ctl_port, MC_OUT2 | MC_RTS | MC_DTR), \ (sys_outb((rs)->modem_ctl_port, MC_OUT2 | MC_RTS | MC_DTR), \
(rs)->idevready = TRUE) (rs)->idevready = TRUE)
@ -98,6 +115,8 @@
*/ */
#define devready(rs) ((my_inb(rs->modem_status_port) | rs->cts) & MS_CTS) #define devready(rs) ((my_inb(rs->modem_status_port) | rs->cts) & MS_CTS)
#endif
/* Macro to tell if transmitter is ready. */ /* Macro to tell if transmitter is ready. */
#define txready(rs) (my_inb(rs->line_status_port) & LS_TRANSMITTER_READY) #define txready(rs) (my_inb(rs->line_status_port) & LS_TRANSMITTER_READY)
@ -507,9 +526,12 @@ void rs_init(tty_t *tp)
} }
rs_irq_set |= (1 << irq); rs_irq_set |= (1 << irq);
#if UART_RTSCTS_OFF
sys_outb(rs->int_enab_port, IE_LINE_STATUS_CHANGE | IE_RECEIVER_READY | IE_TRANSMITTER_READY);
#else
sys_outb(rs->int_enab_port, IE_LINE_STATUS_CHANGE | IE_MODEM_STATUS_CHANGE sys_outb(rs->int_enab_port, IE_LINE_STATUS_CHANGE | IE_MODEM_STATUS_CHANGE
| IE_RECEIVER_READY | IE_TRANSMITTER_READY); | IE_RECEIVER_READY | IE_TRANSMITTER_READY);
#endif
/* Fill in TTY function hooks. */ /* Fill in TTY function hooks. */
tp->tty_devread = rs_read; tp->tty_devread = rs_read;