zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/serial/omninet.c b/ap/os/linux/linux-3.4.x/drivers/usb/serial/omninet.c
new file mode 100644
index 0000000..88dc785
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/serial/omninet.c
@@ -0,0 +1,331 @@
+/*
+ * 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 version
+ * 2 as published by the Free Software Foundation.
+ *
+ * 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
+ */
+
+#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/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+static bool 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
+/* This one seems to be a re-branded ZyXEL device */
+#define BT_IGNITIONPRO_ID 0x2000
+
+/* function prototypes */
+static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port);
+static void omninet_close(struct usb_serial_port *port);
+static void omninet_read_bulk_callback(struct urb *urb);
+static void omninet_write_bulk_callback(struct urb *urb);
+static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count);
+static int omninet_write_room(struct tty_struct *tty);
+static void omninet_disconnect(struct usb_serial *serial);
+static void omninet_release(struct usb_serial *serial);
+static int omninet_attach(struct usb_serial *serial);
+
+static const 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 = {
+ .name = "omninet",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+};
+
+
+static struct usb_serial_driver zyxel_omninet_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "omninet",
+ },
+ .description = "ZyXEL - omni.net lcd plus usb",
+ .id_table = id_table,
+ .num_ports = 1,
+ .attach = omninet_attach,
+ .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,
+ .disconnect = omninet_disconnect,
+ .release = omninet_release,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &zyxel_omninet_device, NULL
+};
+
+
+/* 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_attach(struct usb_serial *serial)
+{
+ struct omninet_data *od;
+ struct usb_serial_port *port = serial->port[0];
+
+ od = kmalloc(sizeof(struct omninet_data), GFP_KERNEL);
+ if (!od) {
+ dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n",
+ __func__, sizeof(struct omninet_data));
+ return -ENOMEM;
+ }
+ usb_set_serial_port_data(port, od);
+ return 0;
+}
+
+static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport;
+ int result = 0;
+
+ dbg("%s - port %d", __func__, port->number);
+
+ wport = serial->port[1];
+ tty_port_tty_set(&wport->port, tty);
+
+ /* Start reading from the device */
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
+ __func__, result);
+ return result;
+}
+
+static void omninet_close(struct usb_serial_port *port)
+{
+ dbg("%s - port %d", __func__, port->number);
+ usb_kill_urb(port->read_urb);
+}
+
+
+#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 usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct omninet_header *header = (struct omninet_header *) &data[0];
+ int status = urb->status;
+ int result;
+ int i;
+
+ dbg("%s - port %d", __func__, port->number);
+
+ if (status) {
+ dbg("%s - nonzero read bulk status received: %d",
+ __func__, status);
+ return;
+ }
+
+ if (debug && header->oh_xxx != 0x30) {
+ if (urb->actual_length) {
+ printk(KERN_DEBUG "%s: omninet_read %d: ",
+ __FILE__, 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) {
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
+ tty_insert_flip_string(tty, data + OMNINET_DATAOFFSET,
+ header->oh_len);
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+ }
+
+ /* Continue trying to always read */
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed resubmitting read urb, error %d\n",
+ __func__, result);
+}
+
+static int omninet_write(struct tty_struct *tty, 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("%s - port %d", __func__, port->number);
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __func__);
+ return 0;
+ }
+
+ if (!test_and_clear_bit(0, &port->write_urbs_free)) {
+ dbg("%s - already writing", __func__);
+ 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, __func__, 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;
+
+ result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
+ if (result) {
+ set_bit(0, &wport->write_urbs_free);
+ dev_err_console(port,
+ "%s - failed submitting write urb, error %d\n",
+ __func__, result);
+ } else
+ result = count;
+
+ return result;
+}
+
+
+static int omninet_write_room(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport = serial->port[1];
+
+ int room = 0; /* Default: no room */
+
+ if (test_bit(0, &wport->write_urbs_free))
+ room = wport->bulk_out_size - OMNINET_HEADERLEN;
+
+ dbg("%s - returns %d", __func__, room);
+
+ return room;
+}
+
+static void omninet_write_bulk_callback(struct urb *urb)
+{
+/* struct omninet_header *header = (struct omninet_header *)
+ urb->transfer_buffer; */
+ struct usb_serial_port *port = urb->context;
+ int status = urb->status;
+
+ dbg("%s - port %0x", __func__, port->number);
+
+ set_bit(0, &port->write_urbs_free);
+ if (status) {
+ dbg("%s - nonzero write bulk status received: %d",
+ __func__, status);
+ return;
+ }
+
+ usb_serial_port_softint(port);
+}
+
+
+static void omninet_disconnect(struct usb_serial *serial)
+{
+ struct usb_serial_port *wport = serial->port[1];
+
+ dbg("%s", __func__);
+
+ usb_kill_urb(wport->write_urb);
+}
+
+
+static void omninet_release(struct usb_serial *serial)
+{
+ struct usb_serial_port *port = serial->port[0];
+
+ dbg("%s", __func__);
+
+ kfree(usb_get_serial_port_data(port));
+}
+
+module_usb_serial_driver(omninet_driver, serial_drivers);
+
+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");