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");