2005-04-16 16:20:36 -06:00
|
|
|
/* suncore.c
|
|
|
|
*
|
|
|
|
* Common SUN serial routines. Based entirely
|
|
|
|
* upon drivers/sbus/char/sunserial.c which is:
|
|
|
|
*
|
|
|
|
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
|
|
|
|
*
|
|
|
|
* Adaptation to new UART layer is:
|
|
|
|
*
|
|
|
|
* Copyright (C) 2002 David S. Miller (davem@redhat.com)
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/config.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/console.h>
|
|
|
|
#include <linux/tty.h>
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
|
|
|
|
#include <asm/oplib.h>
|
|
|
|
|
|
|
|
#include "suncore.h"
|
|
|
|
|
|
|
|
int sunserial_current_minor = 64;
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(sunserial_current_minor);
|
|
|
|
|
|
|
|
void
|
|
|
|
sunserial_console_termios(struct console *con)
|
|
|
|
{
|
|
|
|
char mode[16], buf[16], *s;
|
|
|
|
char *mode_prop = "ttyX-mode";
|
|
|
|
char *cd_prop = "ttyX-ignore-cd";
|
|
|
|
char *dtr_prop = "ttyX-rts-dtr-off";
|
2006-01-18 15:54:31 -07:00
|
|
|
char *ssp_console_modes_prop = "ssp-console-modes";
|
2005-04-16 16:20:36 -06:00
|
|
|
int baud, bits, stop, cflag;
|
|
|
|
char parity;
|
|
|
|
int carrier = 0;
|
|
|
|
int rtsdtr = 1;
|
|
|
|
int topnd, nd;
|
|
|
|
|
|
|
|
if (!serial_console)
|
|
|
|
return;
|
|
|
|
|
2006-01-18 15:54:31 -07:00
|
|
|
switch (serial_console) {
|
|
|
|
case PROMDEV_OTTYA:
|
2005-04-16 16:20:36 -06:00
|
|
|
mode_prop[3] = 'a';
|
|
|
|
cd_prop[3] = 'a';
|
|
|
|
dtr_prop[3] = 'a';
|
2006-01-18 15:54:31 -07:00
|
|
|
break;
|
|
|
|
|
|
|
|
case PROMDEV_OTTYB:
|
2005-04-16 16:20:36 -06:00
|
|
|
mode_prop[3] = 'b';
|
|
|
|
cd_prop[3] = 'b';
|
|
|
|
dtr_prop[3] = 'b';
|
2006-01-18 15:54:31 -07:00
|
|
|
break;
|
|
|
|
|
|
|
|
case PROMDEV_ORSC:
|
|
|
|
|
|
|
|
nd = prom_pathtoinode("rsc");
|
|
|
|
if (!nd) {
|
|
|
|
strcpy(mode, "115200,8,n,1,-");
|
|
|
|
goto no_options;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!prom_node_has_property(nd, ssp_console_modes_prop)) {
|
|
|
|
strcpy(mode, "115200,8,n,1,-");
|
|
|
|
goto no_options;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(mode, 0, sizeof(mode));
|
|
|
|
prom_getstring(nd, ssp_console_modes_prop, mode, sizeof(mode));
|
|
|
|
goto no_options;
|
|
|
|
|
|
|
|
default:
|
|
|
|
strcpy(mode, "9600,8,n,1,-");
|
|
|
|
goto no_options;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
topnd = prom_getchild(prom_root_node);
|
|
|
|
nd = prom_searchsiblings(topnd, "options");
|
|
|
|
if (!nd) {
|
|
|
|
strcpy(mode, "9600,8,n,1,-");
|
|
|
|
goto no_options;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!prom_node_has_property(nd, mode_prop)) {
|
|
|
|
strcpy(mode, "9600,8,n,1,-");
|
|
|
|
goto no_options;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(mode, 0, sizeof(mode));
|
|
|
|
prom_getstring(nd, mode_prop, mode, sizeof(mode));
|
|
|
|
|
|
|
|
if (prom_node_has_property(nd, cd_prop)) {
|
|
|
|
memset(buf, 0, sizeof(buf));
|
|
|
|
prom_getstring(nd, cd_prop, buf, sizeof(buf));
|
|
|
|
if (!strcmp(buf, "false"))
|
|
|
|
carrier = 1;
|
|
|
|
|
|
|
|
/* XXX: this is unused below. */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (prom_node_has_property(nd, dtr_prop)) {
|
|
|
|
memset(buf, 0, sizeof(buf));
|
|
|
|
prom_getstring(nd, dtr_prop, buf, sizeof(buf));
|
|
|
|
if (!strcmp(buf, "false"))
|
|
|
|
rtsdtr = 0;
|
|
|
|
|
|
|
|
/* XXX: this is unused below. */
|
|
|
|
}
|
|
|
|
|
|
|
|
no_options:
|
|
|
|
cflag = CREAD | HUPCL | CLOCAL;
|
|
|
|
|
|
|
|
s = mode;
|
|
|
|
baud = simple_strtoul(s, NULL, 0);
|
|
|
|
s = strchr(s, ',');
|
|
|
|
bits = simple_strtoul(++s, NULL, 0);
|
|
|
|
s = strchr(s, ',');
|
|
|
|
parity = *(++s);
|
|
|
|
s = strchr(s, ',');
|
|
|
|
stop = simple_strtoul(++s, NULL, 0);
|
|
|
|
s = strchr(s, ',');
|
|
|
|
/* XXX handshake is not handled here. */
|
|
|
|
|
|
|
|
switch (baud) {
|
|
|
|
case 150: cflag |= B150; break;
|
|
|
|
case 300: cflag |= B300; break;
|
|
|
|
case 600: cflag |= B600; break;
|
|
|
|
case 1200: cflag |= B1200; break;
|
|
|
|
case 2400: cflag |= B2400; break;
|
|
|
|
case 4800: cflag |= B4800; break;
|
|
|
|
case 9600: cflag |= B9600; break;
|
|
|
|
case 19200: cflag |= B19200; break;
|
|
|
|
case 38400: cflag |= B38400; break;
|
2006-01-18 15:54:31 -07:00
|
|
|
case 57600: cflag |= B57600; break;
|
|
|
|
case 115200: cflag |= B115200; break;
|
|
|
|
case 230400: cflag |= B230400; break;
|
|
|
|
case 460800: cflag |= B460800; break;
|
2005-04-16 16:20:36 -06:00
|
|
|
default: baud = 9600; cflag |= B9600; break;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (bits) {
|
|
|
|
case 5: cflag |= CS5; break;
|
|
|
|
case 6: cflag |= CS6; break;
|
|
|
|
case 7: cflag |= CS7; break;
|
|
|
|
case 8: cflag |= CS8; break;
|
|
|
|
default: cflag |= CS8; break;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (parity) {
|
|
|
|
case 'o': cflag |= (PARENB | PARODD); break;
|
|
|
|
case 'e': cflag |= PARENB; break;
|
|
|
|
case 'n': default: break;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (stop) {
|
|
|
|
case 2: cflag |= CSTOPB; break;
|
|
|
|
case 1: default: break;
|
|
|
|
}
|
|
|
|
|
|
|
|
con->cflag = cflag;
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(sunserial_console_termios);
|
|
|
|
|
|
|
|
/* Sun serial MOUSE auto baud rate detection. */
|
|
|
|
static struct mouse_baud_cflag {
|
|
|
|
int baud;
|
|
|
|
unsigned int cflag;
|
|
|
|
} mouse_baud_table[] = {
|
|
|
|
{ 1200, B1200 },
|
|
|
|
{ 2400, B2400 },
|
|
|
|
{ 4800, B4800 },
|
|
|
|
{ 9600, B9600 },
|
|
|
|
{ -1, ~0 },
|
|
|
|
{ -1, ~0 },
|
|
|
|
};
|
|
|
|
|
|
|
|
unsigned int suncore_mouse_baud_cflag_next(unsigned int cflag, int *new_baud)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; mouse_baud_table[i].baud != -1; i++)
|
|
|
|
if (mouse_baud_table[i].cflag == (cflag & CBAUD))
|
|
|
|
break;
|
|
|
|
|
|
|
|
i += 1;
|
|
|
|
if (mouse_baud_table[i].baud == -1)
|
|
|
|
i = 0;
|
|
|
|
|
|
|
|
*new_baud = mouse_baud_table[i].baud;
|
|
|
|
return mouse_baud_table[i].cflag;
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(suncore_mouse_baud_cflag_next);
|
|
|
|
|
|
|
|
/* Basically, when the baud rate is wrong the mouse spits out
|
|
|
|
* breaks to us.
|
|
|
|
*/
|
|
|
|
int suncore_mouse_baud_detection(unsigned char ch, int is_break)
|
|
|
|
{
|
|
|
|
static int mouse_got_break = 0;
|
|
|
|
static int ctr = 0;
|
|
|
|
|
|
|
|
if (is_break) {
|
|
|
|
/* Let a few normal bytes go by before we jump the gun
|
|
|
|
* and say we need to try another baud rate.
|
|
|
|
*/
|
|
|
|
if (mouse_got_break && ctr < 8)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
/* Ok, we need to try another baud. */
|
|
|
|
ctr = 0;
|
|
|
|
mouse_got_break = 1;
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
if (mouse_got_break) {
|
|
|
|
ctr++;
|
|
|
|
if (ch == 0x87) {
|
|
|
|
/* Correct baud rate determined. */
|
|
|
|
mouse_got_break = 0;
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(suncore_mouse_baud_detection);
|
|
|
|
|
|
|
|
static int __init suncore_init(void)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit suncore_exit(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(suncore_init);
|
|
|
|
module_exit(suncore_exit);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Eddie C. Dost, David S. Miller");
|
|
|
|
MODULE_DESCRIPTION("Sun serial common layer");
|
|
|
|
MODULE_LICENSE("GPL");
|