[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/usb/serial/cyberjack.c b/src/kernel/linux/v4.14/drivers/usb/serial/cyberjack.c
new file mode 100644
index 0000000..47fbd9f
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/usb/serial/cyberjack.c
@@ -0,0 +1,421 @@
+/*
+ * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver
+ *
+ * Copyright (C) 2001 REINER SCT
+ * Author: Matthias Bruestle
+ *
+ * Contact: support@reiner-sct.com (see MAINTAINERS)
+ *
+ * This program is largely derived from work by the linux-usb group
+ * and associated source files. Please see the usb/serial files for
+ * individual credits and copyrights.
+ *
+ * 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.
+ *
+ * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
+ * patience.
+ *
+ * In case of problems, please write to the contact e-mail address
+ * mentioned above.
+ *
+ * Please note that later models of the cyberjack reader family are
+ * supported by a libusb-based userspace device driver.
+ *
+ * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/errno.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 <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+#define CYBERJACK_LOCAL_BUF_SIZE 32
+
+#define DRIVER_AUTHOR "Matthias Bruestle"
+#define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver"
+
+
+#define CYBERJACK_VENDOR_ID 0x0C4B
+#define CYBERJACK_PRODUCT_ID 0x0100
+
+/* Function prototypes */
+static int cyberjack_port_probe(struct usb_serial_port *port);
+static int cyberjack_port_remove(struct usb_serial_port *port);
+static int cyberjack_open(struct tty_struct *tty,
+ struct usb_serial_port *port);
+static void cyberjack_close(struct usb_serial_port *port);
+static int cyberjack_write(struct tty_struct *tty,
+ struct usb_serial_port *port, const unsigned char *buf, int count);
+static int cyberjack_write_room(struct tty_struct *tty);
+static void cyberjack_read_int_callback(struct urb *urb);
+static void cyberjack_read_bulk_callback(struct urb *urb);
+static void cyberjack_write_bulk_callback(struct urb *urb);
+
+static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_serial_driver cyberjack_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "cyberjack",
+ },
+ .description = "Reiner SCT Cyberjack USB card reader",
+ .id_table = id_table,
+ .num_ports = 1,
+ .num_bulk_out = 1,
+ .port_probe = cyberjack_port_probe,
+ .port_remove = cyberjack_port_remove,
+ .open = cyberjack_open,
+ .close = cyberjack_close,
+ .write = cyberjack_write,
+ .write_room = cyberjack_write_room,
+ .read_int_callback = cyberjack_read_int_callback,
+ .read_bulk_callback = cyberjack_read_bulk_callback,
+ .write_bulk_callback = cyberjack_write_bulk_callback,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &cyberjack_device, NULL
+};
+
+struct cyberjack_private {
+ spinlock_t lock; /* Lock for SMP */
+ short rdtodo; /* Bytes still to read */
+ unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */
+ short wrfilled; /* Overall data size we already got */
+ short wrsent; /* Data already sent */
+};
+
+static int cyberjack_port_probe(struct usb_serial_port *port)
+{
+ struct cyberjack_private *priv;
+ int result;
+
+ priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ spin_lock_init(&priv->lock);
+ priv->rdtodo = 0;
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+
+ usb_set_serial_port_data(port, priv);
+
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev, "usb_submit_urb(read int) failed\n");
+
+ return 0;
+}
+
+static int cyberjack_port_remove(struct usb_serial_port *port)
+{
+ struct cyberjack_private *priv;
+
+ usb_kill_urb(port->interrupt_in_urb);
+
+ priv = usb_get_serial_port_data(port);
+ kfree(priv);
+
+ return 0;
+}
+
+static int cyberjack_open(struct tty_struct *tty,
+ struct usb_serial_port *port)
+{
+ struct cyberjack_private *priv;
+ unsigned long flags;
+
+ dev_dbg(&port->dev, "%s - usb_clear_halt\n", __func__);
+ usb_clear_halt(port->serial->dev, port->write_urb->pipe);
+
+ priv = usb_get_serial_port_data(port);
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->rdtodo = 0;
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static void cyberjack_close(struct usb_serial_port *port)
+{
+ usb_kill_urb(port->write_urb);
+ usb_kill_urb(port->read_urb);
+}
+
+static int cyberjack_write(struct tty_struct *tty,
+ struct usb_serial_port *port, const unsigned char *buf, int count)
+{
+ struct device *dev = &port->dev;
+ struct cyberjack_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ int result;
+ int wrexpected;
+
+ if (count == 0) {
+ dev_dbg(dev, "%s - write request of 0 bytes\n", __func__);
+ return 0;
+ }
+
+ if (!test_and_clear_bit(0, &port->write_urbs_free)) {
+ dev_dbg(dev, "%s - already writing\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (count+priv->wrfilled > sizeof(priv->wrbuf)) {
+ /* To much data for buffer. Reset buffer. */
+ priv->wrfilled = 0;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ set_bit(0, &port->write_urbs_free);
+ return 0;
+ }
+
+ /* Copy data */
+ memcpy(priv->wrbuf + priv->wrfilled, buf, count);
+
+ usb_serial_debug_data(dev, __func__, count, priv->wrbuf + priv->wrfilled);
+ priv->wrfilled += count;
+
+ if (priv->wrfilled >= 3) {
+ wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3;
+ dev_dbg(dev, "%s - expected data: %d\n", __func__, wrexpected);
+ } else
+ wrexpected = sizeof(priv->wrbuf);
+
+ if (priv->wrfilled >= wrexpected) {
+ /* We have enough data to begin transmission */
+ int length;
+
+ dev_dbg(dev, "%s - transmitting data (frame 1)\n", __func__);
+ length = (wrexpected > port->bulk_out_size) ?
+ port->bulk_out_size : wrexpected;
+
+ memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length);
+ priv->wrsent = length;
+
+ /* set up our urb */
+ port->write_urb->transfer_buffer_length = length;
+
+ /* send the data out the bulk port */
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (result) {
+ dev_err(&port->dev,
+ "%s - failed submitting write urb, error %d\n",
+ __func__, result);
+ /* Throw away data. No better idea what to do with it. */
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ set_bit(0, &port->write_urbs_free);
+ return 0;
+ }
+
+ dev_dbg(dev, "%s - priv->wrsent=%d\n", __func__, priv->wrsent);
+ dev_dbg(dev, "%s - priv->wrfilled=%d\n", __func__, priv->wrfilled);
+
+ if (priv->wrsent >= priv->wrfilled) {
+ dev_dbg(dev, "%s - buffer cleaned\n", __func__);
+ memset(priv->wrbuf, 0, sizeof(priv->wrbuf));
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+ }
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return count;
+}
+
+static int cyberjack_write_room(struct tty_struct *tty)
+{
+ /* FIXME: .... */
+ return CYBERJACK_LOCAL_BUF_SIZE;
+}
+
+static void cyberjack_read_int_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ struct cyberjack_private *priv = usb_get_serial_port_data(port);
+ struct device *dev = &port->dev;
+ unsigned char *data = urb->transfer_buffer;
+ int status = urb->status;
+ int result;
+
+ /* the urb might have been killed. */
+ if (status)
+ return;
+
+ usb_serial_debug_data(dev, __func__, urb->actual_length, data);
+
+ /* React only to interrupts signaling a bulk_in transfer */
+ if (urb->actual_length == 4 && data[0] == 0x01) {
+ short old_rdtodo;
+
+ /* This is a announcement of coming bulk_ins. */
+ unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3;
+
+ spin_lock(&priv->lock);
+
+ old_rdtodo = priv->rdtodo;
+
+ if (old_rdtodo > SHRT_MAX - size) {
+ dev_dbg(dev, "To many bulk_in urbs to do.\n");
+ spin_unlock(&priv->lock);
+ goto resubmit;
+ }
+
+ /* "+=" is probably more fault tolerant than "=" */
+ priv->rdtodo += size;
+
+ dev_dbg(dev, "%s - rdtodo: %d\n", __func__, priv->rdtodo);
+
+ spin_unlock(&priv->lock);
+
+ if (!old_rdtodo) {
+ result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ if (result)
+ dev_err(dev, "%s - failed resubmitting read urb, error %d\n",
+ __func__, result);
+ dev_dbg(dev, "%s - usb_submit_urb(read urb)\n", __func__);
+ }
+ }
+
+resubmit:
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&port->dev, "usb_submit_urb(read int) failed\n");
+ dev_dbg(dev, "%s - usb_submit_urb(int urb)\n", __func__);
+}
+
+static void cyberjack_read_bulk_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ struct cyberjack_private *priv = usb_get_serial_port_data(port);
+ struct device *dev = &port->dev;
+ unsigned char *data = urb->transfer_buffer;
+ short todo;
+ int result;
+ int status = urb->status;
+
+ usb_serial_debug_data(dev, __func__, urb->actual_length, data);
+ if (status) {
+ dev_dbg(dev, "%s - nonzero read bulk status received: %d\n",
+ __func__, status);
+ return;
+ }
+
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
+ }
+
+ spin_lock(&priv->lock);
+
+ /* Reduce urbs to do by one. */
+ priv->rdtodo -= urb->actual_length;
+ /* Just to be sure */
+ if (priv->rdtodo < 0)
+ priv->rdtodo = 0;
+ todo = priv->rdtodo;
+
+ spin_unlock(&priv->lock);
+
+ dev_dbg(dev, "%s - rdtodo: %d\n", __func__, todo);
+
+ /* Continue to read if we have still urbs to do. */
+ if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) {
+ result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ if (result)
+ dev_err(dev, "%s - failed resubmitting read urb, error %d\n",
+ __func__, result);
+ dev_dbg(dev, "%s - usb_submit_urb(read urb)\n", __func__);
+ }
+}
+
+static void cyberjack_write_bulk_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ struct cyberjack_private *priv = usb_get_serial_port_data(port);
+ struct device *dev = &port->dev;
+ int status = urb->status;
+
+ set_bit(0, &port->write_urbs_free);
+ if (status) {
+ dev_dbg(dev, "%s - nonzero write bulk status received: %d\n",
+ __func__, status);
+ return;
+ }
+
+ spin_lock(&priv->lock);
+
+ /* only do something if we have more data to send */
+ if (priv->wrfilled) {
+ int length, blksize, result;
+
+ dev_dbg(dev, "%s - transmitting data (frame n)\n", __func__);
+
+ length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ?
+ port->bulk_out_size : (priv->wrfilled - priv->wrsent);
+
+ memcpy(port->write_urb->transfer_buffer,
+ priv->wrbuf + priv->wrsent, length);
+ priv->wrsent += length;
+
+ /* set up our urb */
+ port->write_urb->transfer_buffer_length = length;
+
+ /* send the data out the bulk port */
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (result) {
+ dev_err(dev, "%s - failed submitting write urb, error %d\n",
+ __func__, result);
+ /* Throw away data. No better idea what to do with it. */
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+ goto exit;
+ }
+
+ dev_dbg(dev, "%s - priv->wrsent=%d\n", __func__, priv->wrsent);
+ dev_dbg(dev, "%s - priv->wrfilled=%d\n", __func__, priv->wrfilled);
+
+ blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3;
+
+ if (priv->wrsent >= priv->wrfilled ||
+ priv->wrsent >= blksize) {
+ dev_dbg(dev, "%s - buffer cleaned\n", __func__);
+ memset(priv->wrbuf, 0, sizeof(priv->wrbuf));
+ priv->wrfilled = 0;
+ priv->wrsent = 0;
+ }
+ }
+
+exit:
+ spin_unlock(&priv->lock);
+ usb_serial_port_softint(port);
+}
+
+module_usb_serial_driver(serial_drivers, id_table);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");