3 * Common SUN serial routines. Based entirely
4 * upon drivers/sbus/char/sunserial.c which is:
6 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
8 * Adaptation to new UART layer is:
10 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/console.h>
16 #include <linux/tty.h>
17 #include <linux/errno.h>
18 #include <linux/string.h>
19 #include <linux/init.h>
21 #include <asm/oplib.h>
25 int sunserial_current_minor = 64;
27 EXPORT_SYMBOL(sunserial_current_minor);
30 sunserial_console_termios(struct console *con)
32 char mode[16], buf[16], *s;
33 char *mode_prop = "ttyX-mode";
34 char *cd_prop = "ttyX-ignore-cd";
35 char *dtr_prop = "ttyX-rts-dtr-off";
36 char *ssp_console_modes_prop = "ssp-console-modes";
37 int baud, bits, stop, cflag;
46 switch (serial_console) {
61 nd = prom_pathtoinode("rsc");
63 strcpy(mode, "115200,8,n,1,-");
67 if (!prom_node_has_property(nd, ssp_console_modes_prop)) {
68 strcpy(mode, "115200,8,n,1,-");
72 memset(mode, 0, sizeof(mode));
73 prom_getstring(nd, ssp_console_modes_prop, mode, sizeof(mode));
77 strcpy(mode, "9600,8,n,1,-");
81 topnd = prom_getchild(prom_root_node);
82 nd = prom_searchsiblings(topnd, "options");
84 strcpy(mode, "9600,8,n,1,-");
88 if (!prom_node_has_property(nd, mode_prop)) {
89 strcpy(mode, "9600,8,n,1,-");
93 memset(mode, 0, sizeof(mode));
94 prom_getstring(nd, mode_prop, mode, sizeof(mode));
96 if (prom_node_has_property(nd, cd_prop)) {
97 memset(buf, 0, sizeof(buf));
98 prom_getstring(nd, cd_prop, buf, sizeof(buf));
99 if (!strcmp(buf, "false"))
102 /* XXX: this is unused below. */
105 if (prom_node_has_property(nd, dtr_prop)) {
106 memset(buf, 0, sizeof(buf));
107 prom_getstring(nd, dtr_prop, buf, sizeof(buf));
108 if (!strcmp(buf, "false"))
111 /* XXX: this is unused below. */
115 cflag = CREAD | HUPCL | CLOCAL;
118 baud = simple_strtoul(s, NULL, 0);
120 bits = simple_strtoul(++s, NULL, 0);
124 stop = simple_strtoul(++s, NULL, 0);
126 /* XXX handshake is not handled here. */
129 case 150: cflag |= B150; break;
130 case 300: cflag |= B300; break;
131 case 600: cflag |= B600; break;
132 case 1200: cflag |= B1200; break;
133 case 2400: cflag |= B2400; break;
134 case 4800: cflag |= B4800; break;
135 case 9600: cflag |= B9600; break;
136 case 19200: cflag |= B19200; break;
137 case 38400: cflag |= B38400; break;
138 case 57600: cflag |= B57600; break;
139 case 115200: cflag |= B115200; break;
140 case 230400: cflag |= B230400; break;
141 case 460800: cflag |= B460800; break;
142 default: baud = 9600; cflag |= B9600; break;
146 case 5: cflag |= CS5; break;
147 case 6: cflag |= CS6; break;
148 case 7: cflag |= CS7; break;
149 case 8: cflag |= CS8; break;
150 default: cflag |= CS8; break;
154 case 'o': cflag |= (PARENB | PARODD); break;
155 case 'e': cflag |= PARENB; break;
156 case 'n': default: break;
160 case 2: cflag |= CSTOPB; break;
161 case 1: default: break;
167 EXPORT_SYMBOL(sunserial_console_termios);
169 /* Sun serial MOUSE auto baud rate detection. */
170 static struct mouse_baud_cflag {
173 } mouse_baud_table[] = {
182 unsigned int suncore_mouse_baud_cflag_next(unsigned int cflag, int *new_baud)
186 for (i = 0; mouse_baud_table[i].baud != -1; i++)
187 if (mouse_baud_table[i].cflag == (cflag & CBAUD))
191 if (mouse_baud_table[i].baud == -1)
194 *new_baud = mouse_baud_table[i].baud;
195 return mouse_baud_table[i].cflag;
198 EXPORT_SYMBOL(suncore_mouse_baud_cflag_next);
200 /* Basically, when the baud rate is wrong the mouse spits out
203 int suncore_mouse_baud_detection(unsigned char ch, int is_break)
205 static int mouse_got_break = 0;
209 /* Let a few normal bytes go by before we jump the gun
210 * and say we need to try another baud rate.
212 if (mouse_got_break && ctr < 8)
215 /* Ok, we need to try another baud. */
220 if (mouse_got_break) {
223 /* Correct baud rate determined. */
231 EXPORT_SYMBOL(suncore_mouse_baud_detection);
233 static int __init suncore_init(void)
238 static void __exit suncore_exit(void)
242 module_init(suncore_init);
243 module_exit(suncore_exit);
245 MODULE_AUTHOR("Eddie C. Dost, David S. Miller");
246 MODULE_DESCRIPTION("Sun serial common layer");
247 MODULE_LICENSE("GPL");