TIOCGSERIAL for SB1250 UARTs

TIOCGSERIAL for SB1250 UARTs

[Peter 'p2' De Schrijver]

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Hi,

The attached patch implements the TIOCGSERIAL ioctl for the SB1250
DUART. 

Thanks,

Peter (p2).

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--- linux-2.4.24/drivers/char/sb1250_duart.c	2003-08-25 13:44:41.000000000 +0200
+++ linux-qube/linux-2.4.24/linux/drivers/char/sb1250_duart.c	2004-04-03 20:40:05.000000000 +0200
@@ -498,9 +498,31 @@
 	duart_set_cflag(us->line, tty->termios->c_cflag);
 }
 
+static int get_serial_info(uart_state_t *us, struct serial_struct * retinfo) {
+
+	struct serial_struct tmp;
+
+	memset(&tmp, 0, sizeof(tmp));
+
+	tmp.type=PORT_SB1250;
+	tmp.line=us->line;
+	tmp.port=A_DUART_CHANREG(tmp.line,0);
+	tmp.irq=K_INT_UART_0 + tmp.line;
+	tmp.xmit_fifo_size=16; /* fixed by hw */
+	tmp.baud_base=5000000;
+	tmp.io_type=SERIAL_IO_MEM;
+
+	if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int duart_ioctl(struct tty_struct *tty, struct file * file,
 		       unsigned int cmd, unsigned long arg)
 {
+	uart_state_t *us = (uart_state_t *) tty->driver_data;
+
 /*	if (serial_paranoia_check(info, tty->device, "rs_ioctl"))
 	return -ENODEV;*/
 	switch (cmd) {
@@ -517,7 +539,7 @@
 		printk("Ignoring TIOCMSET\n");
 		break;
 	case TIOCGSERIAL:
-		printk("Ignoring TIOCGSERIAL\n");
+		return get_serial_info(us,(struct serial_struct *) arg);
 		break;
 	case TIOCSSERIAL:
 		printk("Ignoring TIOCSSERIAL\n");
--- linux-2.4.24/include/linux/serial.h	2002-08-03 02:39:45.000000000 +0200
+++ linux-qube/linux-2.4.24/linux/include/linux/serial.h	2004-04-03 20:14:37.000000000 +0200
@@ -75,7 +75,8 @@
 #define PORT_16654	11
 #define PORT_16850	12
 #define PORT_RSA	13	/* RSA-DV II/S card */
-#define PORT_MAX	13
+#define PORT_SB1250	14
+#define PORT_MAX	14
 
 #define SERIAL_IO_PORT	0
 #define SERIAL_IO_HUB6	1

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