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http://www.hpl.hp.com/personal/Jean_Tourrilhes/bt/setserial_16C950-2.diff
diff -u -p setserial.brain.c setserial.c
--- setserial.brain.c Mon Oct 29 16:49:10 2001
+++ setserial.c Mon Oct 29 17:01:54 2001
@@ -77,6 +77,7 @@ struct serial_type_struct {
#define CMD_FLOW_ON 16
#define CMD_RX_TMOUT 17
#define CMD_DMA_CHAN 18
+#define CMD_WMSR 19
#define FLAG_CAN_INVERT 0x0001
#define FLAG_NEED_ARG 0x0002
@@ -126,9 +127,15 @@ struct flag_type_table {
CMD_RX_TMOUT, "rx_timeout", 0, 0, 0, FLAG_NEED_ARG,
CMD_DMA_CHAN, "dma_channel", 0, 0, 0, FLAG_NEED_ARG,
#endif
+ CMD_WMSR, "wmsr", 0, 0, 0, FLAG_NEED_ARG,
0, 0, 0, 0, 0, 0,
};
+/* Kernel header will take ages before beeing updated in distributions */
+#ifndef TIOCSERSETWMSR
+#define TIOCSERSETWMSR 0x5461 /* Set custom write in Modem Status Register */
+#endif /* TIOCSERSETWMSR */
+
char *serial_type(int id)
{
int i;
@@ -603,6 +610,15 @@ void set_serial(char *device, char ** ar
set_hayesesp(fd, p->cmd, atonum(*arg++));
break;
#endif
+ case CMD_WMSR:
+ {
+ unsigned char wmsr = atonum(*arg++);
+ if (ioctl(fd, TIOCSERSETWMSR, &wmsr) < 0) {
+ perror("Cannot set wmsr");
+ exit(1);
+ }
+ }
+ break;
default:
fprintf(stderr, "Internal error: unhandled cmd #%d\n", p->cmd);
exit(1);
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