Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
new file mode 100644
index 0000000..167f8ec
--- /dev/null
+++ b/drivers/usb/serial/console.c
@@ -0,0 +1,264 @@
+/*
+ * USB Serial Console driver
+ *
+ * Copyright (C) 2001 - 2002 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * Thanks to Randy Dunlap for the original version of this code.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/usb.h>
+
+static int debug;
+
+#include "usb-serial.h"
+
+struct usbcons_info {
+ int magic;
+ int break_flag;
+ struct usb_serial_port *port;
+};
+
+static struct usbcons_info usbcons_info;
+static struct console usbcons;
+
+/*
+ * ------------------------------------------------------------
+ * USB Serial console driver
+ *
+ * Much of the code here is copied from drivers/char/serial.c
+ * and implements a phony serial console in the same way that
+ * serial.c does so that in case some software queries it,
+ * it will get the same results.
+ *
+ * Things that are different from the way the serial port code
+ * does things, is that we call the lower level usb-serial
+ * driver code to initialize the device, and we set the initial
+ * console speeds based on the command line arguments.
+ * ------------------------------------------------------------
+ */
+
+
+/*
+ * The parsing of the command line works exactly like the
+ * serial.c code, except that the specifier is "ttyUSB" instead
+ * of "ttyS".
+ */
+static int __init usb_console_setup(struct console *co, char *options)
+{
+ struct usbcons_info *info = &usbcons_info;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int doflow = 0;
+ int cflag = CREAD | HUPCL | CLOCAL;
+ char *s;
+ struct usb_serial *serial;
+ struct usb_serial_port *port;
+ int retval = 0;
+ struct tty_struct *tty;
+ struct termios *termios;
+
+ dbg ("%s", __FUNCTION__);
+
+ if (options) {
+ baud = simple_strtoul(options, NULL, 10);
+ s = options;
+ while (*s >= '0' && *s <= '9')
+ s++;
+ if (*s)
+ parity = *s++;
+ if (*s)
+ bits = *s++ - '0';
+ if (*s)
+ doflow = (*s++ == 'r');
+ }
+
+ /* build a cflag setting */
+ switch (baud) {
+ case 1200:
+ cflag |= B1200;
+ break;
+ case 2400:
+ cflag |= B2400;
+ break;
+ case 4800:
+ cflag |= B4800;
+ break;
+ case 19200:
+ cflag |= B19200;
+ break;
+ case 38400:
+ cflag |= B38400;
+ break;
+ case 57600:
+ cflag |= B57600;
+ break;
+ case 115200:
+ cflag |= B115200;
+ break;
+ case 9600:
+ default:
+ cflag |= B9600;
+ /*
+ * Set this to a sane value to prevent a divide error
+ */
+ baud = 9600;
+ break;
+ }
+ switch (bits) {
+ case 7:
+ cflag |= CS7;
+ break;
+ default:
+ case 8:
+ cflag |= CS8;
+ break;
+ }
+ switch (parity) {
+ case 'o': case 'O':
+ cflag |= PARODD;
+ break;
+ case 'e': case 'E':
+ cflag |= PARENB;
+ break;
+ }
+ co->cflag = cflag;
+
+ /* grab the first serial port that happens to be connected */
+ serial = usb_serial_get_by_index(0);
+ if (serial == NULL) {
+ /* no device is connected yet, sorry :( */
+ err ("No USB device connected to ttyUSB0");
+ return -ENODEV;
+ }
+
+ port = serial->port[0];
+ port->tty = NULL;
+
+ info->port = port;
+
+ ++port->open_count;
+ if (port->open_count == 1) {
+ /* only call the device specific open if this
+ * is the first time the port is opened */
+ if (serial->type->open)
+ retval = serial->type->open(port, NULL);
+ else
+ retval = usb_serial_generic_open(port, NULL);
+ if (retval)
+ port->open_count = 0;
+ }
+
+ if (retval) {
+ err ("could not open USB console port");
+ return retval;
+ }
+
+ if (serial->type->set_termios) {
+ /* build up a fake tty structure so that the open call has something
+ * to look at to get the cflag value */
+ tty = kmalloc (sizeof (*tty), GFP_KERNEL);
+ if (!tty) {
+ err ("no more memory");
+ return -ENOMEM;
+ }
+ termios = kmalloc (sizeof (*termios), GFP_KERNEL);
+ if (!termios) {
+ err ("no more memory");
+ kfree (tty);
+ return -ENOMEM;
+ }
+ memset (tty, 0x00, sizeof(*tty));
+ memset (termios, 0x00, sizeof(*termios));
+ termios->c_cflag = cflag;
+ tty->termios = termios;
+ port->tty = tty;
+
+ /* set up the initial termios settings */
+ serial->type->set_termios(port, NULL);
+ port->tty = NULL;
+ kfree (termios);
+ kfree (tty);
+ }
+
+ return retval;
+}
+
+static void usb_console_write(struct console *co, const char *buf, unsigned count)
+{
+ static struct usbcons_info *info = &usbcons_info;
+ struct usb_serial_port *port = info->port;
+ struct usb_serial *serial;
+ int retval = -ENODEV;
+
+ if (!port)
+ return;
+ serial = port->serial;
+
+ if (count == 0)
+ return;
+
+ dbg("%s - port %d, %d byte(s)", __FUNCTION__, port->number, count);
+
+ if (!port->open_count) {
+ dbg ("%s - port not opened", __FUNCTION__);
+ goto exit;
+ }
+
+ /* pass on to the driver specific version of this function if it is available */
+ if (serial->type->write)
+ retval = serial->type->write(port, buf, count);
+ else
+ retval = usb_serial_generic_write(port, buf, count);
+
+exit:
+ dbg("%s - return value (if we had one): %d", __FUNCTION__, retval);
+}
+
+static struct console usbcons = {
+ .name = "ttyUSB",
+ .write = usb_console_write,
+ .setup = usb_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+void usb_serial_console_init (int serial_debug, int minor)
+{
+ debug = serial_debug;
+
+ if (minor == 0) {
+ /*
+ * Call register_console() if this is the first device plugged
+ * in. If we call it earlier, then the callback to
+ * console_setup() will fail, as there is not a device seen by
+ * the USB subsystem yet.
+ */
+ /*
+ * Register console.
+ * NOTES:
+ * console_setup() is called (back) immediately (from register_console).
+ * console_write() is called immediately from register_console iff
+ * CON_PRINTBUFFER is set in flags.
+ */
+ dbg ("registering the USB serial console.");
+ register_console(&usbcons);
+ }
+}
+
+void usb_serial_console_exit (void)
+{
+ unregister_console(&usbcons);
+}
+