/* 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/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); voidsunserial_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";	char *ssp_console_modes_prop = "ssp-console-modes";	int baud, bits, stop, cflag;	char parity;	int carrier = 0;	int rtsdtr = 1;	int topnd, nd; 	if (!serial_console)		return; 	switch (serial_console) {	case PROMDEV_OTTYA:		mode_prop[3] = 'a';		cd_prop[3] = 'a';		dtr_prop[3] = 'a';		break; 	case PROMDEV_OTTYB:		mode_prop[3] = 'b';		cd_prop[3] = 'b';		dtr_prop[3] = 'b';		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;	} 	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;		case 57600: cflag |= B57600; break;		case 115200: cflag |= B115200; break;		case 230400: cflag |= B230400; break;		case 460800: cflag |= B460800; break;		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");