1 /*
2 * IBM/3270 Driver -- Copyright (C) 2000, 2001 UTS Global LLC
3 *
4 * tubttyscl.c -- Linemode tty driver scroll-timing functions
5 *
6 *
7 *
8 *
9 *
10 * Author: Richard Hitt
11 */
12 #include "tubio.h"
13 void tty3270_scl_settimer(tub_t *);
14 void tty3270_scl_resettimer(tub_t *);
15 static void tty3270_scl_timeout(unsigned long);
16
17 void
tty3270_scl_settimer(tub_t * tubp)18 tty3270_scl_settimer(tub_t *tubp)
19 {
20 struct timer_list *tp = &tubp->tty_stimer;
21
22 if (tubp->flags & TUB_SCROLLTIMING)
23 return;
24 if (tubp->tty_scrolltime == 0)
25 return;
26
27 init_timer(tp);
28 tp->expires = jiffies + HZ * tubp->tty_scrolltime;
29 tp->data = (unsigned long)tubp;
30 tp->function = tty3270_scl_timeout;
31 add_timer(tp);
32 tubp->flags |= TUB_SCROLLTIMING;
33 }
34
35 void
tty3270_scl_resettimer(tub_t * tubp)36 tty3270_scl_resettimer(tub_t *tubp)
37 {
38 struct timer_list *tp = &tubp->tty_stimer;
39
40 if ((tubp->flags & TUB_SCROLLTIMING) == 0)
41 return;
42
43 del_timer(tp);
44 tubp->flags &= ~TUB_SCROLLTIMING;
45 }
46
47 static void
tty3270_scl_timeout(unsigned long data)48 tty3270_scl_timeout(unsigned long data)
49 {
50 tub_t *tubp = (void *)data;
51 long flags;
52
53 TUBLOCK(tubp->irq, flags);
54 tubp->stat = TBS_RUNNING;
55 tty3270_scl_resettimer(tubp);
56 tubp->cmd = TBC_CLRUPDLOG;
57 tty3270_build(tubp);
58 TUBUNLOCK(tubp->irq, flags);
59 }
60
61 int
tty3270_scl_set(tub_t * tubp,char * buf,int count)62 tty3270_scl_set(tub_t *tubp, char *buf, int count)
63 {
64 if (strncmp(buf, "scrolltime=", 11) == 0) {
65 tubp->tty_scrolltime =
66 simple_strtoul(buf + 11, 0, 0);
67 return count;
68 }
69 return 0;
70 }
71
72 int
tty3270_scl_init(tub_t * tubp)73 tty3270_scl_init(tub_t *tubp)
74 {
75 extern int tubscrolltime;
76
77 tubp->tty_scrolltime = tubscrolltime;
78 if (tubp->tty_scrolltime < 0)
79 tubp->tty_scrolltime = DEFAULT_SCROLLTIME;
80 return 0;
81 }
82
83 void
tty3270_scl_fini(tub_t * tubp)84 tty3270_scl_fini(tub_t *tubp)
85 {
86 if ((tubp->flags & TUB_OPEN_STET) == 0)
87 tty3270_scl_resettimer(tubp);
88 }
89