Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 362 insertions, 0 deletions

diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
new file mode 100644
index 000000000000..a1cba4b5fa23
--- /dev/null
+++ b/drivers/usb/serial/omninet.c
@@ -0,0 +1,362 @@
+/*
+ * USB ZyXEL omni.net LCD PLUS driver
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ * See Documentation/usb/usb-serial.txt for more information on using this driver
+ *
+ * Please report both successes and troubles to the author at omninet@kroah.com
+ * 
+ * (05/30/2001) gkh
+ *	switched from using spinlock to a semaphore, which fixes lots of problems.
+ *
+ * (04/08/2001) gb
+ *	Identify version on module load.
+ *
+ * (11/01/2000) Adam J. Richter
+ *	usb_device_id table support
+ * 
+ * (10/05/2000) gkh
+ *	Fixed bug with urb->dev not being set properly, now that the usb
+ *	core needs it.
+ * 
+ * (08/28/2000) gkh
+ *	Added locks for SMP safeness.
+ *	Fixed MOD_INC and MOD_DEC logic and the ability to open a port more 
+ *	than once.
+ *	Fixed potential race in omninet_write_bulk_callback
+ *
+ * (07/19/2000) gkh
+ *	Added module_init and module_exit functions to handle the fact that this
+ *	driver is a loadable module now.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+static int debug;
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v1.1"
+#define DRIVER_AUTHOR "Alessandro Zummo"
+#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"
+
+#define ZYXEL_VENDOR_ID		0x0586
+#define ZYXEL_OMNINET_ID	0x1000
+#define BT_IGNITIONPRO_ID	0x2000  /* This one seems to be a re-branded ZyXEL device */
+
+/* function prototypes */
+static int  omninet_open		(struct usb_serial_port *port, struct file *filp);
+static void omninet_close		(struct usb_serial_port *port, struct file *filp);
+static void omninet_read_bulk_callback	(struct urb *urb, struct pt_regs *regs);
+static void omninet_write_bulk_callback	(struct urb *urb, struct pt_regs *regs);
+static int  omninet_write		(struct usb_serial_port *port, const unsigned char *buf, int count);
+static int  omninet_write_room		(struct usb_serial_port *port);
+static void omninet_shutdown		(struct usb_serial *serial);
+
+static struct usb_device_id id_table [] = {
+	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
+	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
+	{ }						/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, id_table);
+
+static struct usb_driver omninet_driver = {
+	.owner =	THIS_MODULE,
+	.name =		"omninet",
+	.probe =	usb_serial_probe,
+	.disconnect =	usb_serial_disconnect,
+	.id_table =	id_table,
+};
+
+
+static struct usb_serial_device_type zyxel_omninet_device = {
+	.owner =		THIS_MODULE,
+	.name =			"ZyXEL - omni.net lcd plus usb",
+	.short_name =		"omninet",
+	.id_table =		id_table,
+	.num_interrupt_in =	1,
+	.num_bulk_in =		1,
+	.num_bulk_out =		2,
+	.num_ports =		1,
+	.open =			omninet_open,
+	.close =		omninet_close,
+	.write =		omninet_write,
+	.write_room =		omninet_write_room,
+	.read_bulk_callback =	omninet_read_bulk_callback,
+	.write_bulk_callback =	omninet_write_bulk_callback,
+	.shutdown =		omninet_shutdown,
+};
+
+
+/* The protocol.
+ *
+ * The omni.net always exchange 64 bytes of data with the host. The first
+ * four bytes are the control header, you can see it in the above structure.
+ *
+ * oh_seq is a sequence number. Don't know if/how it's used.
+ * oh_len is the length of the data bytes in the packet.
+ * oh_xxx Bit-mapped, related to handshaking and status info.
+ *	I normally set it to 0x03 in trasmitted frames.
+ *	7: Active when the TA is in a CONNECTed state.
+ *	6: unknown
+ *	5: handshaking, unknown
+ *	4: handshaking, unknown
+ *	3: unknown, usually 0
+ *	2: unknown, usually 0
+ *	1: handshaking, unknown, usually set to 1 in trasmitted frames
+ *	0: handshaking, unknown, usually set to 1 in trasmitted frames
+ * oh_pad Probably a pad byte.
+ *
+ * After the header you will find data bytes if oh_len was greater than zero.
+ *
+ */
+
+struct omninet_header
+{
+	__u8	oh_seq;
+	__u8	oh_len;
+	__u8	oh_xxx;
+	__u8	oh_pad;
+};
+
+struct omninet_data
+{
+	__u8	od_outseq;	// Sequence number for bulk_out URBs
+};
+
+static int omninet_open (struct usb_serial_port *port, struct file *filp)
+{
+	struct usb_serial	*serial = port->serial;
+	struct usb_serial_port	*wport;
+	struct omninet_data	*od;
+	int			result = 0;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
+	if( !od ) {
+		err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
+		return -ENOMEM;
+	}
+
+	usb_set_serial_port_data(port, od);
+	wport = serial->port[1];
+	wport->tty = port->tty;
+
+	/* Start reading from the device */
+	usb_fill_bulk_urb(port->read_urb, serial->dev, 
+		      usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+		      port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
+		      omninet_read_bulk_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+	if (result)
+		err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
+
+	return result;
+}
+
+static void omninet_close (struct usb_serial_port *port, struct file * filp)
+{
+	struct usb_serial 	*serial = port->serial;
+	struct usb_serial_port 	*wport;
+	struct omninet_data 	*od;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	wport = serial->port[1];
+	usb_kill_urb(wport->write_urb);
+	usb_kill_urb(port->read_urb);
+
+	od = usb_get_serial_port_data(port);
+	if (od)
+		kfree(od);
+}
+
+
+#define OMNINET_DATAOFFSET	0x04
+#define OMNINET_HEADERLEN	sizeof(struct omninet_header)
+#define OMNINET_BULKOUTSIZE 	(64 - OMNINET_HEADERLEN)
+
+static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+	struct usb_serial_port 	*port 	= (struct usb_serial_port *)urb->context;
+	unsigned char 		*data 	= urb->transfer_buffer;
+	struct omninet_header 	*header = (struct omninet_header *) &data[0];
+
+	int i;
+	int result;
+
+//	dbg("omninet_read_bulk_callback");
+
+	if (urb->status) {
+		dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+		return;
+	}
+
+	if ((debug) && (header->oh_xxx != 0x30)) {
+		if (urb->actual_length) {
+			printk (KERN_DEBUG __FILE__ ": omninet_read %d: ", header->oh_len);
+			for (i = 0; i < (header->oh_len + OMNINET_HEADERLEN); i++) {
+				printk ("%.2x ", data[i]);
+			}
+			printk ("\n");
+		}
+	}
+
+	if (urb->actual_length && header->oh_len) {
+		for (i = 0; i < header->oh_len; i++) {
+			 tty_insert_flip_char(port->tty, data[OMNINET_DATAOFFSET + i], 0);
+	  	}
+	  	tty_flip_buffer_push(port->tty);
+	}
+
+	/* Continue trying to always read  */
+	usb_fill_bulk_urb(urb, port->serial->dev, 
+		      usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
+		      urb->transfer_buffer, urb->transfer_buffer_length,
+		      omninet_read_bulk_callback, port);
+	result = usb_submit_urb(urb, GFP_ATOMIC);
+	if (result)
+		err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+
+	return;
+}
+
+static int omninet_write (struct usb_serial_port *port, const unsigned char *buf, int count)
+{
+	struct usb_serial 	*serial	= port->serial;
+	struct usb_serial_port 	*wport	= serial->port[1];
+
+	struct omninet_data 	*od 	= usb_get_serial_port_data(port);
+	struct omninet_header	*header = (struct omninet_header *) wport->write_urb->transfer_buffer;
+
+	int			result;
+
+//	dbg("omninet_write port %d", port->number);
+
+	if (count == 0) {
+		dbg("%s - write request of 0 bytes", __FUNCTION__);
+		return (0);
+	}
+	if (wport->write_urb->status == -EINPROGRESS) {
+		dbg("%s - already writing", __FUNCTION__);
+		return (0);
+	}
+
+	count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;
+
+	memcpy (wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET, buf, count);
+
+	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, wport->write_urb->transfer_buffer);
+
+	header->oh_seq 	= od->od_outseq++;
+	header->oh_len 	= count;
+	header->oh_xxx  = 0x03;
+	header->oh_pad 	= 0x00;
+
+	/* send the data out the bulk port, always 64 bytes */
+	wport->write_urb->transfer_buffer_length = 64;
+
+	wport->write_urb->dev = serial->dev;
+	result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
+	if (result)
+		err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
+	else
+		result = count;
+
+	return result;
+}
+
+
+static int omninet_write_room (struct usb_serial_port *port)
+{
+	struct usb_serial 	*serial = port->serial;
+	struct usb_serial_port 	*wport 	= serial->port[1];
+
+	int room = 0; // Default: no room
+
+	if (wport->write_urb->status != -EINPROGRESS)
+		room = wport->bulk_out_size - OMNINET_HEADERLEN;
+
+//	dbg("omninet_write_room returns %d", room);
+
+	return (room);
+}
+
+static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+/*	struct omninet_header	*header = (struct omninet_header  *) urb->transfer_buffer; */
+	struct usb_serial_port 	*port   = (struct usb_serial_port *) urb->context;
+
+//	dbg("omninet_write_bulk_callback, port %0x\n", port);
+
+	if (urb->status) {
+		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+		return;
+	}
+
+	schedule_work(&port->work);
+
+//	dbg("omninet_write_bulk_callback, tty %0x\n", tty);
+}
+
+
+static void omninet_shutdown (struct usb_serial *serial)
+{
+	dbg ("%s", __FUNCTION__);
+}
+
+
+static int __init omninet_init (void)
+{
+	int retval;
+	retval = usb_serial_register(&zyxel_omninet_device);
+	if (retval)
+		goto failed_usb_serial_register;
+	retval = usb_register(&omninet_driver);
+	if (retval)
+		goto failed_usb_register;
+	info(DRIVER_VERSION ":" DRIVER_DESC);
+	return 0;
+failed_usb_register:
+	usb_serial_deregister(&zyxel_omninet_device);
+failed_usb_serial_register:
+	return retval;
+}
+
+
+static void __exit omninet_exit (void)
+{
+	usb_deregister (&omninet_driver);
+	usb_serial_deregister (&zyxel_omninet_device);
+}
+
+
+module_init(omninet_init);
+module_exit(omninet_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");