@@ -26,6 +26,10 @@ obj-$(CONFIG_DRM_I915_BPO) += i915/
##
##
##
+obj-y += xr-usb-serial/
+##
+##
+##
##
##
##
new file mode 100644
@@ -0,0 +1,15 @@
+obj-m := xr_usb_serial_common.o
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+
+EXTRA_CFLAGS := -DDEBUG=0
+
+all:
+ $(MAKE) -C $(KERNELDIR) M=$(PWD)
+
+modules_install:
+ $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
+
+clean:
+ rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions vtty
new file mode 100644
@@ -0,0 +1,50 @@
+Exar USB Serial Driver
+======================
+Version 1A, 1/9/2015
+
+This driver will work with any USB UART function in these Exar devices:
+ XR21V1410/1412/1414
+ XR21B1411
+ XR21B1420/1422/1424
+ XR22801/802/804
+
+The source code has been tested on various Linux kernels from 3.6.x to 3.17.x.
+This may also work with newer kernels as well.
+
+
+Installation
+------------
+
+* Compile and install the common usb serial driver module
+
+ # make
+ # insmod ./xr_usb_serial_common.ko
+
+
+* Plug the device into the USB host. You should see up to four devices created,
+ typically /dev/ttyXRUSB[0-3].
+
+
+Tips for Debugging
+------------------
+
+* Check that the USB UART is detected by the system
+
+ # lsusb
+
+* Check that the CDC-ACM driver was not installed for the Exar USB UART
+
+ # ls /dev/tty*
+
+ To remove the CDC-ACM driver and install the driver:
+
+ # rmmod cdc-acm
+ # modprobe -r usbserial
+ # modprobe usbserial
+ # insmod ./xr_usb_serial_common.ko
+
+
+Technical Support
+-----------------
+Send any technical questions/issues to uarttechsupport@exar.com.
+
new file mode 100644
@@ -0,0 +1,1834 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+ /*
+ * Copyright (c) 2015 Exar Corporation, Inc.
+ *
+ * This driver will work with any USB UART function in these Exar devices:
+ * XR21V1410/1412/1414
+ * XR21B1411
+ * XR21B1420/1422/1424
+ * XR22801/802/804
+ *
+ * The driver has been tested on various kernel versions from 3.6.x to 3.17.x.
+ * This driver may work on newer versions as well. There is a different driver available
+ * from www.exar.com that will work with kernel versions 2.6.18 to 3.4.x.
+ *
+ * ChangeLog:
+ * Version 1A - Initial released version.
+ */
+
+//#undef DEBUG
+#undef VERBOSE_DEBUG
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/cdc.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <linux/list.h>
+#include "linux/version.h"
+
+#include "xr_usb_serial_common.h"
+#include "xr_usb_serial_ioctl.h"
+
+#define DRIVER_AUTHOR "<uarttechsupport@exar.com>"
+#define DRIVER_DESC "Exar USB UART (serial port) driver"
+
+static struct usb_driver xr_usb_serial_driver;
+static struct tty_driver *xr_usb_serial_tty_driver;
+static struct xr_usb_serial *xr_usb_serial_table[XR_USB_SERIAL_TTY_MINORS];
+
+static DEFINE_MUTEX(xr_usb_serial_table_lock);
+
+/*
+ * xr_usb_serial_table accessors
+ */
+
+/*
+ * Look up an XR_USB_SERIAL structure by index. If found and not disconnected, increment
+ * its refcount and return it with its mutex held.
+ */
+static struct xr_usb_serial *xr_usb_serial_get_by_index(unsigned index)
+{
+ struct xr_usb_serial *xr_usb_serial;
+
+ mutex_lock(&xr_usb_serial_table_lock);
+ xr_usb_serial = xr_usb_serial_table[index];
+ if (xr_usb_serial) {
+ mutex_lock(&xr_usb_serial->mutex);
+ if (xr_usb_serial->disconnected) {
+ mutex_unlock(&xr_usb_serial->mutex);
+ xr_usb_serial = NULL;
+ } else {
+ tty_port_get(&xr_usb_serial->port);
+ mutex_unlock(&xr_usb_serial->mutex);
+ }
+ }
+ mutex_unlock(&xr_usb_serial_table_lock);
+ return xr_usb_serial;
+}
+
+/*
+ * Try to find an available minor number and if found, associate it with 'xr_usb_serial'.
+ */
+static int xr_usb_serial_alloc_minor(struct xr_usb_serial *xr_usb_serial)
+{
+ int minor;
+
+ mutex_lock(&xr_usb_serial_table_lock);
+ for (minor = 0; minor < XR_USB_SERIAL_TTY_MINORS; minor++) {
+ if (!xr_usb_serial_table[minor]) {
+ xr_usb_serial_table[minor] = xr_usb_serial;
+ break;
+ }
+ }
+ mutex_unlock(&xr_usb_serial_table_lock);
+
+ return minor;
+}
+
+/* Release the minor number associated with 'xr_usb_serial'. */
+static void xr_usb_serial_release_minor(struct xr_usb_serial *xr_usb_serial)
+{
+ mutex_lock(&xr_usb_serial_table_lock);
+ xr_usb_serial_table[xr_usb_serial->minor] = NULL;
+ mutex_unlock(&xr_usb_serial_table_lock);
+}
+
+/*
+ * Functions for XR_USB_SERIAL control messages.
+ */
+
+static int xr_usb_serial_ctrl_msg(struct xr_usb_serial *xr_usb_serial,
+ int request, int value, void *buf, int len)
+{
+ int retval =
+ usb_control_msg(xr_usb_serial->dev,
+ usb_sndctrlpipe(xr_usb_serial->dev, 0),
+ request, USB_RT_XR_USB_SERIAL, value,
+ xr_usb_serial->control->altsetting[0].desc.
+ bInterfaceNumber,
+ buf, len, 5000);
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
+ __func__, request, value, len, retval);
+ return retval < 0 ? retval : 0;
+}
+
+#include "xr_usb_serial_hal.c"
+
+/*
+ * Write buffer management.
+ * All of these assume proper locks taken by the caller.
+ */
+
+static int xr_usb_serial_wb_alloc(struct xr_usb_serial *xr_usb_serial)
+{
+ int i, wbn;
+ struct xr_usb_serial_wb *wb;
+
+ wbn = 0;
+ i = 0;
+ for (;;) {
+ wb = &xr_usb_serial->wb[wbn];
+ if (!wb->use) {
+ wb->use = 1;
+ return wbn;
+ }
+ wbn = (wbn + 1) % XR_USB_SERIAL_NW;
+ if (++i >= XR_USB_SERIAL_NW)
+ return -1;
+ }
+}
+
+static int xr_usb_serial_wb_is_avail(struct xr_usb_serial *xr_usb_serial)
+{
+ int i, n;
+ unsigned long flags;
+
+ n = XR_USB_SERIAL_NW;
+ spin_lock_irqsave(&xr_usb_serial->write_lock, flags);
+ for (i = 0; i < XR_USB_SERIAL_NW; i++)
+ n -= xr_usb_serial->wb[i].use;
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+ return n;
+}
+
+/*
+ * Finish write. Caller must hold xr_usb_serial->write_lock
+ */
+static void xr_usb_serial_write_done(struct xr_usb_serial *xr_usb_serial,
+ struct xr_usb_serial_wb *wb)
+{
+ wb->use = 0;
+ xr_usb_serial->transmitting--;
+ usb_autopm_put_interface_async(xr_usb_serial->control);
+}
+
+/*
+ * Poke write.
+ *
+ * the caller is responsible for locking
+ */
+
+static int xr_usb_serial_start_wb(struct xr_usb_serial *xr_usb_serial,
+ struct xr_usb_serial_wb *wb)
+{
+ int rc;
+
+ xr_usb_serial->transmitting++;
+
+ wb->urb->transfer_buffer = wb->buf;
+ wb->urb->transfer_dma = wb->dmah;
+ wb->urb->transfer_buffer_length = wb->len;
+ wb->urb->dev = xr_usb_serial->dev;
+
+ rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
+ if (rc < 0) {
+ dev_err(&xr_usb_serial->data->dev,
+ "%s - usb_submit_urb(write bulk) failed: %d\n",
+ __func__, rc);
+ xr_usb_serial_write_done(xr_usb_serial, wb);
+ }
+ return rc;
+}
+
+/*
+ * attributes exported through sysfs
+ */
+static ssize_t show_caps
+ (struct device *dev, struct device_attribute *attr, char *buf) {
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+
+ return sprintf(buf, "%d", xr_usb_serial->ctrl_caps);
+}
+
+static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
+
+static ssize_t show_country_codes
+ (struct device *dev, struct device_attribute *attr, char *buf) {
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+
+ memcpy(buf, xr_usb_serial->country_codes,
+ xr_usb_serial->country_code_size);
+ return xr_usb_serial->country_code_size;
+}
+
+static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
+
+static ssize_t show_country_rel_date
+ (struct device *dev, struct device_attribute *attr, char *buf) {
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+
+ return sprintf(buf, "%d", xr_usb_serial->country_rel_date);
+}
+
+static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
+/*
+ * Interrupt handlers for various XR_USB_SERIAL device responses
+ */
+
+/* control interface reports status changes with "interrupt" transfers */
+static void xr_usb_serial_ctrl_irq(struct urb *urb)
+{
+ struct xr_usb_serial *xr_usb_serial = urb->context;
+ struct usb_cdc_notification *dr = urb->transfer_buffer;
+ struct tty_struct *tty;
+ unsigned char *data;
+ int newctrl;
+ int retval;
+ int status = urb->status;
+ int i;
+ unsigned char *p;
+
+ switch (status) {
+ case 0:
+ p = (unsigned char *)(urb->transfer_buffer);
+ for (i = 0; i < urb->actual_length; i++) {
+ dev_dbg(&xr_usb_serial->control->dev, "0x%02x\n", p[i]);
+ }
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - urb shutting down with status: %d\n",
+ __func__, status);
+ return;
+ default:
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - nonzero urb status received: %d\n",
+ __func__, status);
+ goto exit;
+ }
+
+ usb_mark_last_busy(xr_usb_serial->dev);
+
+ data = (unsigned char *)(dr + 1);
+ switch (dr->bNotificationType) {
+ case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - network connection: %d\n", __func__, dr->wValue);
+ break;
+
+ case USB_CDC_NOTIFY_SERIAL_STATE:
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 9, 0)
+ newctrl = get_unaligned_le16(data);
+ if (!xr_usb_serial->clocal
+ && (xr_usb_serial->
+ ctrlin & ~newctrl & XR_USB_SERIAL_CTRL_DCD)) {
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - calling hangup\n", __func__);
+ tty_port_tty_hangup(&xr_usb_serial->port, false);
+ }
+#else
+ tty = tty_port_tty_get(&xr_usb_serial->port);
+ newctrl = get_unaligned_le16(data);
+ if (tty) {
+ if (!xr_usb_serial->clocal &&
+ (xr_usb_serial->
+ ctrlin & ~newctrl & XR_USB_SERIAL_CTRL_DCD)) {
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - calling hangup\n", __func__);
+ tty_hangup(tty);
+ }
+ tty_kref_put(tty);
+ }
+#endif
+ xr_usb_serial->ctrlin = newctrl;
+
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - input control lines: dcd%c dsr%c break%c "
+ "ring%c framing%c parity%c overrun%c\n",
+ __func__,
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_DCD ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_DSR ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_BRK ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_RI ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_FRAMING ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_PARITY ? '+' : '-',
+ xr_usb_serial->
+ ctrlin & XR_USB_SERIAL_CTRL_OVERRUN ? '+' : '-');
+ break;
+
+ default:
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - unknown notification %d received: index %d "
+ "len %d data0 %d data1 %d\n",
+ __func__,
+ dr->bNotificationType, dr->wIndex,
+ dr->wLength, data[0], data[1]);
+ break;
+ }
+exit:
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ dev_err(&xr_usb_serial->control->dev,
+ "%s - usb_submit_urb failed: %d\n", __func__, retval);
+}
+
+static int xr_usb_serial_submit_read_urb(struct xr_usb_serial *xr_usb_serial,
+ int index, gfp_t mem_flags)
+{
+ int res;
+
+ if (!test_and_clear_bit(index, &xr_usb_serial->read_urbs_free))
+ return 0;
+
+ dev_vdbg(&xr_usb_serial->data->dev, "%s - urb %d\n", __func__, index);
+
+ res = usb_submit_urb(xr_usb_serial->read_urbs[index], mem_flags);
+ if (res) {
+ if (res != -EPERM) {
+ dev_err(&xr_usb_serial->data->dev,
+ "%s - usb_submit_urb failed: %d\n",
+ __func__, res);
+ }
+ set_bit(index, &xr_usb_serial->read_urbs_free);
+ return res;
+ }
+
+ return 0;
+}
+
+static int xr_usb_serial_submit_read_urbs(struct xr_usb_serial *xr_usb_serial,
+ gfp_t mem_flags)
+{
+ int res;
+ int i;
+
+ for (i = 0; i < xr_usb_serial->rx_buflimit; ++i) {
+ res =
+ xr_usb_serial_submit_read_urb(xr_usb_serial, i, mem_flags);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static void xr_usb_serial_process_read_urb(struct xr_usb_serial *xr_usb_serial,
+ struct urb *urb)
+{
+ struct tty_struct *tty;
+ if (!urb->actual_length)
+ return;
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 9, 0)
+ tty_insert_flip_string(&xr_usb_serial->port, urb->transfer_buffer,
+ urb->actual_length);
+ tty_flip_buffer_push(&xr_usb_serial->port);
+#else
+ tty = tty_port_tty_get(&xr_usb_serial->port);
+ if (!tty)
+ return;
+ tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
+ tty_flip_buffer_push(tty);
+
+ tty_kref_put(tty);
+#endif
+}
+
+static void xr_usb_serial_read_bulk_callback(struct urb *urb)
+{
+ struct xr_usb_serial_rb *rb = urb->context;
+ struct xr_usb_serial *xr_usb_serial = rb->instance;
+ unsigned long flags;
+
+ dev_vdbg(&xr_usb_serial->data->dev, "%s - urb %d, len %d\n", __func__,
+ rb->index, urb->actual_length);
+ set_bit(rb->index, &xr_usb_serial->read_urbs_free);
+
+ if (!xr_usb_serial->dev) {
+ dev_dbg(&xr_usb_serial->data->dev, "%s - disconnected\n",
+ __func__);
+ return;
+ }
+ usb_mark_last_busy(xr_usb_serial->dev);
+
+ if (urb->status) {
+ dev_dbg(&xr_usb_serial->data->dev,
+ "%s - non-zero urb status: %d\n", __func__,
+ urb->status);
+ return;
+ }
+ xr_usb_serial_process_read_urb(xr_usb_serial, urb);
+
+ /* throttle device if requested by tty */
+ spin_lock_irqsave(&xr_usb_serial->read_lock, flags);
+ xr_usb_serial->throttled = xr_usb_serial->throttle_req;
+ if (!xr_usb_serial->throttled && !xr_usb_serial->susp_count) {
+ spin_unlock_irqrestore(&xr_usb_serial->read_lock, flags);
+ xr_usb_serial_submit_read_urb(xr_usb_serial, rb->index,
+ GFP_ATOMIC);
+ } else {
+ spin_unlock_irqrestore(&xr_usb_serial->read_lock, flags);
+ }
+}
+
+/* data interface wrote those outgoing bytes */
+static void xr_usb_serial_write_bulk(struct urb *urb)
+{
+ struct xr_usb_serial_wb *wb = urb->context;
+ struct xr_usb_serial *xr_usb_serial = wb->instance;
+ unsigned long flags;
+
+ if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
+ dev_vdbg(&xr_usb_serial->data->dev,
+ "%s - len %d/%d, status %d\n", __func__,
+ urb->actual_length, urb->transfer_buffer_length,
+ urb->status);
+
+ spin_lock_irqsave(&xr_usb_serial->write_lock, flags);
+ xr_usb_serial_write_done(xr_usb_serial, wb);
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+ schedule_work(&xr_usb_serial->work);
+}
+
+static void xr_usb_serial_softint(struct work_struct *work)
+{
+ struct xr_usb_serial *xr_usb_serial =
+ container_of(work, struct xr_usb_serial, work);
+ struct tty_struct *tty;
+
+ dev_vdbg(&xr_usb_serial->data->dev, "%s\n", __func__);
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 9, 0)
+ tty_port_tty_wakeup(&xr_usb_serial->port);
+#else
+ tty = tty_port_tty_get(&xr_usb_serial->port);
+ if (!tty)
+ return;
+ tty_wakeup(tty);
+ tty_kref_put(tty);
+#endif
+}
+
+/*
+ * TTY handlers
+ */
+
+static int xr_usb_serial_tty_install(struct tty_driver *driver,
+ struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial;
+ int retval;
+
+ dev_dbg(tty->dev, "%s\n", __func__);
+
+ xr_usb_serial = xr_usb_serial_get_by_index(tty->index);
+ if (!xr_usb_serial)
+ return -ENODEV;
+
+ retval = tty_standard_install(driver, tty);
+ if (retval)
+ goto error_init_termios;
+
+ tty->driver_data = xr_usb_serial;
+
+ return 0;
+
+error_init_termios:
+ tty_port_put(&xr_usb_serial->port);
+ return retval;
+}
+
+static int xr_usb_serial_tty_open(struct tty_struct *tty, struct file *filp)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+
+ dev_dbg(tty->dev, "%s\n", __func__);
+
+ return tty_port_open(&xr_usb_serial->port, tty, filp);
+}
+
+static int xr_usb_serial_port_activate(struct tty_port *port,
+ struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial =
+ container_of(port, struct xr_usb_serial, port);
+ int retval = -ENODEV;
+
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+
+ mutex_lock(&xr_usb_serial->mutex);
+ if (xr_usb_serial->disconnected)
+ goto disconnected;
+
+ retval = usb_autopm_get_interface(xr_usb_serial->control);
+ if (retval)
+ goto error_get_interface;
+
+ /*
+ * FIXME: Why do we need this? Allocating 64K of physically contiguous
+ * memory is really nasty...
+ */
+ set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
+ xr_usb_serial->control->needs_remote_wakeup = 1;
+
+ xr_usb_serial->ctrlurb->dev = xr_usb_serial->dev;
+ if (usb_submit_urb(xr_usb_serial->ctrlurb, GFP_KERNEL)) {
+ dev_err(&xr_usb_serial->control->dev,
+ "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
+ goto error_submit_urb;
+ }
+
+ xr_usb_serial->ctrlout =
+ XR_USB_SERIAL_CTRL_DTR | XR_USB_SERIAL_CTRL_RTS;
+ if (xr_usb_serial_set_control(xr_usb_serial, xr_usb_serial->ctrlout) < 0
+ && (xr_usb_serial->ctrl_caps & USB_CDC_CAP_LINE))
+ goto error_set_control;
+
+ usb_autopm_put_interface(xr_usb_serial->control);
+
+ /*
+ * Unthrottle device in case the TTY was closed while throttled.
+ */
+ spin_lock_irq(&xr_usb_serial->read_lock);
+ xr_usb_serial->throttled = 0;
+ xr_usb_serial->throttle_req = 0;
+ spin_unlock_irq(&xr_usb_serial->read_lock);
+
+ if (xr_usb_serial_submit_read_urbs(xr_usb_serial, GFP_KERNEL))
+ goto error_submit_read_urbs;
+
+ mutex_unlock(&xr_usb_serial->mutex);
+
+ return 0;
+
+error_submit_read_urbs:
+ xr_usb_serial->ctrlout = 0;
+ xr_usb_serial_set_control(xr_usb_serial, xr_usb_serial->ctrlout);
+error_set_control:
+ usb_kill_urb(xr_usb_serial->ctrlurb);
+error_submit_urb:
+ usb_autopm_put_interface(xr_usb_serial->control);
+error_get_interface:
+disconnected:
+ mutex_unlock(&xr_usb_serial->mutex);
+ return retval;
+}
+
+static void xr_usb_serial_port_destruct(struct tty_port *port)
+{
+ struct xr_usb_serial *xr_usb_serial =
+ container_of(port, struct xr_usb_serial, port);
+
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+ tty_unregister_device(xr_usb_serial_tty_driver, xr_usb_serial->minor);
+#endif
+ xr_usb_serial_release_minor(xr_usb_serial);
+ usb_put_intf(xr_usb_serial->control);
+ kfree(xr_usb_serial->country_codes);
+ kfree(xr_usb_serial);
+}
+
+static void xr_usb_serial_port_shutdown(struct tty_port *port)
+{
+ struct xr_usb_serial *xr_usb_serial =
+ container_of(port, struct xr_usb_serial, port);
+ int i;
+
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+
+ mutex_lock(&xr_usb_serial->mutex);
+ if (!xr_usb_serial->disconnected) {
+ usb_autopm_get_interface(xr_usb_serial->control);
+ xr_usb_serial_set_control(xr_usb_serial,
+ xr_usb_serial->ctrlout = 0);
+ usb_kill_urb(xr_usb_serial->ctrlurb);
+ for (i = 0; i < XR_USB_SERIAL_NW; i++)
+ usb_kill_urb(xr_usb_serial->wb[i].urb);
+ for (i = 0; i < xr_usb_serial->rx_buflimit; i++)
+ usb_kill_urb(xr_usb_serial->read_urbs[i]);
+ xr_usb_serial->control->needs_remote_wakeup = 0;
+ usb_autopm_put_interface(xr_usb_serial->control);
+ }
+ mutex_unlock(&xr_usb_serial->mutex);
+}
+
+static void xr_usb_serial_tty_cleanup(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+ tty_port_put(&xr_usb_serial->port);
+}
+
+static void xr_usb_serial_tty_hangup(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+ tty_port_hangup(&xr_usb_serial->port);
+}
+
+static void xr_usb_serial_tty_close(struct tty_struct *tty, struct file *filp)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+ tty_port_close(&xr_usb_serial->port, tty, filp);
+}
+
+static int xr_usb_serial_tty_write(struct tty_struct *tty,
+ const unsigned char *buf, int count)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ int stat;
+ unsigned long flags;
+ int wbn;
+ struct xr_usb_serial_wb *wb;
+
+ if (!count)
+ return 0;
+
+ dev_vdbg(&xr_usb_serial->data->dev, "%s - count %d\n", __func__, count);
+
+ spin_lock_irqsave(&xr_usb_serial->write_lock, flags);
+ wbn = xr_usb_serial_wb_alloc(xr_usb_serial);
+ if (wbn < 0) {
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+ return 0;
+ }
+ wb = &xr_usb_serial->wb[wbn];
+
+ if (!xr_usb_serial->dev) {
+ wb->use = 0;
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+ return -ENODEV;
+ }
+
+ count =
+ (count >
+ xr_usb_serial->writesize) ? xr_usb_serial->writesize : count;
+ dev_vdbg(&xr_usb_serial->data->dev, "%s - write %d\n", __func__, count);
+ memcpy(wb->buf, buf, count);
+ wb->len = count;
+
+ usb_autopm_get_interface_async(xr_usb_serial->control);
+ if (xr_usb_serial->susp_count) {
+ if (!xr_usb_serial->delayed_wb)
+ xr_usb_serial->delayed_wb = wb;
+ else
+ usb_autopm_put_interface_async(xr_usb_serial->control);
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+ return count; /* A white lie */
+ }
+ usb_mark_last_busy(xr_usb_serial->dev);
+
+ stat = xr_usb_serial_start_wb(xr_usb_serial, wb);
+ spin_unlock_irqrestore(&xr_usb_serial->write_lock, flags);
+
+ if (stat < 0)
+ return stat;
+ return count;
+}
+
+static int xr_usb_serial_tty_write_room(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ /*
+ * Do not let the line discipline to know that we have a reserve,
+ * or it might get too enthusiastic.
+ */
+ return xr_usb_serial_wb_is_avail(xr_usb_serial) ? xr_usb_serial->
+ writesize : 0;
+}
+
+static int xr_usb_serial_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ /*
+ * if the device was unplugged then any remaining characters fell out
+ * of the connector ;)
+ */
+ if (xr_usb_serial->disconnected)
+ return 0;
+ /*
+ * This is inaccurate (overcounts), but it works.
+ */
+ return (XR_USB_SERIAL_NW -
+ xr_usb_serial_wb_is_avail(xr_usb_serial)) *
+ xr_usb_serial->writesize;
+}
+
+static void xr_usb_serial_tty_throttle(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+
+ spin_lock_irq(&xr_usb_serial->read_lock);
+ xr_usb_serial->throttle_req = 1;
+ spin_unlock_irq(&xr_usb_serial->read_lock);
+}
+
+static void xr_usb_serial_tty_unthrottle(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ unsigned int was_throttled;
+
+ spin_lock_irq(&xr_usb_serial->read_lock);
+ was_throttled = xr_usb_serial->throttled;
+ xr_usb_serial->throttled = 0;
+ xr_usb_serial->throttle_req = 0;
+ spin_unlock_irq(&xr_usb_serial->read_lock);
+
+ if (was_throttled)
+ xr_usb_serial_submit_read_urbs(xr_usb_serial, GFP_KERNEL);
+}
+
+static int xr_usb_serial_tty_break_ctl(struct tty_struct *tty, int state)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ int retval;
+
+ retval = xr_usb_serial_send_break(xr_usb_serial, state ? 0xffff : 0);
+ if (retval < 0)
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - send break failed\n", __func__);
+ return retval;
+}
+
+static int xr_usb_serial_tty_tiocmget(struct tty_struct *tty)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ dev_dbg(&xr_usb_serial->control->dev, "xr_usb_serial_tty_tiocmget\n");
+ return xr_usb_serial_tiocmget(xr_usb_serial);
+
+}
+
+static int xr_usb_serial_tty_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_tty_tiocmset set=0x%x clear=0x%x\n", set, clear);
+ return xr_usb_serial_tiocmset(xr_usb_serial, set, clear);
+
+}
+
+static int get_serial_info(struct xr_usb_serial *xr_usb_serial,
+ struct serial_struct __user * info)
+{
+ struct serial_struct tmp;
+
+ if (!info)
+ return -EINVAL;
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.flags = ASYNC_LOW_LATENCY;
+ tmp.xmit_fifo_size = xr_usb_serial->writesize;
+ tmp.baud_base = le32_to_cpu(xr_usb_serial->line.dwDTERate);
+ tmp.close_delay = xr_usb_serial->port.close_delay / 10;
+ tmp.closing_wait =
+ xr_usb_serial->port.closing_wait ==
+ ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : xr_usb_serial->
+ port.closing_wait / 10;
+
+ if (copy_to_user(info, &tmp, sizeof(tmp)))
+ return -EFAULT;
+ else
+ return 0;
+}
+
+static int set_serial_info(struct xr_usb_serial *xr_usb_serial,
+ struct serial_struct __user * newinfo)
+{
+ struct serial_struct new_serial;
+ unsigned int closing_wait, close_delay;
+ int retval = 0;
+
+ if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
+ return -EFAULT;
+
+ close_delay = new_serial.close_delay * 10;
+ closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+
+ mutex_lock(&xr_usb_serial->port.mutex);
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if ((close_delay != xr_usb_serial->port.close_delay) ||
+ (closing_wait != xr_usb_serial->port.closing_wait))
+ retval = -EPERM;
+ else
+ retval = -EOPNOTSUPP;
+ } else {
+ xr_usb_serial->port.close_delay = close_delay;
+ xr_usb_serial->port.closing_wait = closing_wait;
+ }
+
+ mutex_unlock(&xr_usb_serial->port.mutex);
+ return retval;
+}
+
+static int xr_usb_serial_tty_ioctl(struct tty_struct *tty,
+ unsigned int cmd, unsigned long arg)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+ int rv = -ENOIOCTLCMD;
+ unsigned int channel, reg, val;
+
+ short *data;
+ switch (cmd) {
+ case TIOCGSERIAL: /* gets serial port data */
+ rv = get_serial_info(xr_usb_serial,
+ (struct serial_struct __user *)arg);
+ break;
+ case TIOCSSERIAL:
+ rv = set_serial_info(xr_usb_serial,
+ (struct serial_struct __user *)arg);
+ break;
+ case XR_USB_SERIAL_GET_REG:
+ if (get_user(channel, (int __user *)arg))
+ return -EFAULT;
+ if (get_user(reg, (int __user *)(arg + sizeof(int))))
+ return -EFAULT;
+
+ data = kmalloc(2, GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(&xr_usb_serial->control->dev,
+ "%s - Cannot allocate USB buffer.\n", __func__);
+ return -ENOMEM;
+ }
+
+ if (channel == -1) {
+ rv = xr_usb_serial_get_reg(xr_usb_serial, reg, data);
+ } else {
+ rv = xr_usb_serial_get_reg_ext(xr_usb_serial, channel,
+ reg, data);
+ }
+ if (rv != 1) {
+ dev_err(&xr_usb_serial->control->dev,
+ "Cannot get register (%d)\n", rv);
+ kfree(data);
+ return -EFAULT;
+ }
+ if (put_user
+ (le16_to_cpu(*data),
+ (int __user *)(arg + 2 * sizeof(int)))) {
+ dev_err(&xr_usb_serial->control->dev,
+ "Cannot put user result\n");
+ kfree(data);
+ return -EFAULT;
+ }
+ rv = 0;
+ kfree(data);
+ break;
+
+ case XR_USB_SERIAL_SET_REG:
+ if (get_user(channel, (int __user *)arg))
+ return -EFAULT;
+ if (get_user(reg, (int __user *)(arg + sizeof(int))))
+ return -EFAULT;
+ if (get_user(val, (int __user *)(arg + 2 * sizeof(int))))
+ return -EFAULT;
+
+ if (channel == -1) {
+ rv = xr_usb_serial_set_reg(xr_usb_serial, reg, val);
+ } else {
+ rv = xr_usb_serial_set_reg_ext(xr_usb_serial, channel,
+ reg, val);
+
+ }
+ if (rv < 0)
+ return -EFAULT;
+ rv = 0;
+ break;
+ case XR_USB_SERIAL_LOOPBACK:
+ if (get_user(channel, (int __user *)arg))
+ return -EFAULT;
+ if (channel == -1)
+ channel = xr_usb_serial->channel;
+ rv = xr_usb_serial_set_loopback(xr_usb_serial, channel);
+ if (rv < 0)
+ return -EFAULT;
+ rv = 0;
+ break;
+
+ }
+
+ return rv;
+}
+
+static void xr_usb_serial_tty_set_termios(struct tty_struct *tty,
+ struct ktermios *termios_old)
+{
+ struct xr_usb_serial *xr_usb_serial = tty->driver_data;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+ struct ktermios *termios = tty->termios;
+#else
+ struct ktermios *termios = &tty->termios;
+#endif
+ unsigned int cflag = termios->c_cflag;
+ struct usb_cdc_line_coding newline;
+ int newctrl = xr_usb_serial->ctrlout;
+ xr_usb_serial_disable(xr_usb_serial);
+ newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
+ newline.bCharFormat = termios->c_cflag & CSTOPB ? 1 : 0;
+ newline.bParityType = termios->c_cflag & PARENB ?
+ (termios->c_cflag & PARODD ? 1 : 2) +
+ (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
+ switch (termios->c_cflag & CSIZE) {
+ case CS5: /*using CS5 replace of the 9 bit data mode */
+ newline.bDataBits = 9;
+ break;
+ case CS6:
+ newline.bDataBits = 6;
+ break;
+ case CS7:
+ newline.bDataBits = 7;
+ break;
+ case CS8:
+ default:
+ newline.bDataBits = 8;
+ break;
+ }
+ /* FIXME: Needs to clear unsupported bits in the termios */
+ xr_usb_serial->clocal = ((termios->c_cflag & CLOCAL) != 0);
+
+ if (!newline.dwDTERate) {
+ newline.dwDTERate = xr_usb_serial->line.dwDTERate;
+ newctrl &= ~XR_USB_SERIAL_CTRL_DTR;
+ } else
+ newctrl |= XR_USB_SERIAL_CTRL_DTR;
+
+ if (newctrl != xr_usb_serial->ctrlout)
+ xr_usb_serial_set_control(xr_usb_serial,
+ xr_usb_serial->ctrlout = newctrl);
+
+ xr_usb_serial_set_flow_mode(xr_usb_serial, tty, cflag); /*set the serial flow mode */
+
+ if (memcmp(&xr_usb_serial->line, &newline, sizeof newline)) {
+ memcpy(&xr_usb_serial->line, &newline, sizeof newline);
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s - set line: %d %d %d %d\n", __func__,
+ le32_to_cpu(newline.dwDTERate), newline.bCharFormat,
+ newline.bParityType, newline.bDataBits);
+ xr_usb_serial_set_line(xr_usb_serial, &xr_usb_serial->line);
+ }
+ xr_usb_serial_enable(xr_usb_serial);
+}
+
+static const struct tty_port_operations xr_usb_serial_port_ops = {
+ .shutdown = xr_usb_serial_port_shutdown,
+ .activate = xr_usb_serial_port_activate,
+ .destruct = xr_usb_serial_port_destruct,
+};
+
+/*
+ * USB probe and disconnect routines.
+ */
+
+/* Little helpers: write/read buffers free */
+static void xr_usb_serial_write_buffers_free(struct xr_usb_serial
+ *xr_usb_serial)
+{
+ int i;
+ struct xr_usb_serial_wb *wb;
+ struct usb_device *usb_dev =
+ interface_to_usbdev(xr_usb_serial->control);
+
+ for (wb = &xr_usb_serial->wb[0], i = 0; i < XR_USB_SERIAL_NW; i++, wb++)
+ usb_free_coherent(usb_dev, xr_usb_serial->writesize, wb->buf,
+ wb->dmah);
+}
+
+static void xr_usb_serial_read_buffers_free(struct xr_usb_serial *xr_usb_serial)
+{
+ struct usb_device *usb_dev =
+ interface_to_usbdev(xr_usb_serial->control);
+ int i;
+
+ for (i = 0; i < xr_usb_serial->rx_buflimit; i++)
+ usb_free_coherent(usb_dev, xr_usb_serial->readsize,
+ xr_usb_serial->read_buffers[i].base,
+ xr_usb_serial->read_buffers[i].dma);
+}
+
+/* Little helper: write buffers allocate */
+static int xr_usb_serial_write_buffers_alloc(struct xr_usb_serial
+ *xr_usb_serial)
+{
+ int i;
+ struct xr_usb_serial_wb *wb;
+
+ for (wb = &xr_usb_serial->wb[0], i = 0; i < XR_USB_SERIAL_NW; i++, wb++) {
+ wb->buf =
+ usb_alloc_coherent(xr_usb_serial->dev,
+ xr_usb_serial->writesize, GFP_KERNEL,
+ &wb->dmah);
+ if (!wb->buf) {
+ while (i != 0) {
+ --i;
+ --wb;
+ usb_free_coherent(xr_usb_serial->dev,
+ xr_usb_serial->writesize,
+ wb->buf, wb->dmah);
+ }
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
+static int xr_usb_serial_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_cdc_union_desc *union_header = NULL;
+ struct usb_cdc_country_functional_desc *cfd = NULL;
+ unsigned char *buffer = intf->altsetting->extra;
+ int buflen = intf->altsetting->extralen;
+ struct usb_interface *control_interface;
+ struct usb_interface *data_interface;
+ struct usb_endpoint_descriptor *epctrl = NULL;
+ struct usb_endpoint_descriptor *epread = NULL;
+ struct usb_endpoint_descriptor *epwrite = NULL;
+ struct usb_device *usb_dev = interface_to_usbdev(intf);
+ struct xr_usb_serial *xr_usb_serial;
+ int minor;
+ int ctrlsize, readsize;
+ u8 *buf;
+ u8 ac_management_function = 0;
+ u8 call_management_function = 0;
+ int call_interface_num = -1;
+ int data_interface_num = -1;
+ unsigned long quirks;
+ int num_rx_buf;
+ int i;
+ int combined_interfaces = 0;
+ struct device *tty_dev;
+ int rv = -ENOMEM;
+
+ /* normal quirks */
+ quirks = (unsigned long)id->driver_info;
+
+ if (quirks == IGNORE_DEVICE)
+ return -ENODEV;
+
+ num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : XR_USB_SERIAL_NR;
+
+ dev_dbg(&intf->dev, "USB_device_id idVendor:%04x, idProduct %04x\n",
+ id->idVendor, id->idProduct);
+
+ /* handle quirks deadly to normal probing */
+ if (quirks == NO_UNION_NORMAL) {
+ data_interface = usb_ifnum_to_if(usb_dev, 1);
+ control_interface = usb_ifnum_to_if(usb_dev, 0);
+ goto skip_normal_probe;
+ }
+
+ /* normal probing */
+ if (!buffer) {
+ dev_err(&intf->dev, "Weird descriptor references\n");
+ return -EINVAL;
+ }
+
+ if (!buflen) {
+ if (intf->cur_altsetting->endpoint &&
+ intf->cur_altsetting->endpoint->extralen &&
+ intf->cur_altsetting->endpoint->extra) {
+ dev_dbg(&intf->dev,
+ "Seeking extra descriptors on endpoint\n");
+ buflen = intf->cur_altsetting->endpoint->extralen;
+ buffer = intf->cur_altsetting->endpoint->extra;
+ } else {
+ dev_err(&intf->dev,
+ "Zero length descriptor references\n");
+ return -EINVAL;
+ }
+ }
+
+ while (buflen > 0) {
+ if (buffer[1] != USB_DT_CS_INTERFACE) {
+ dev_err(&intf->dev, "skipping garbage\n");
+ goto next_desc;
+ }
+
+ switch (buffer[2]) {
+ case USB_CDC_UNION_TYPE: /* we've found it */
+ if (union_header) {
+ dev_err(&intf->dev, "More than one "
+ "union descriptor, skipping ...\n");
+ goto next_desc;
+ }
+ union_header = (struct usb_cdc_union_desc *)buffer;
+ break;
+ case USB_CDC_COUNTRY_TYPE: /* export through sysfs */
+ cfd = (struct usb_cdc_country_functional_desc *)buffer;
+ break;
+ case USB_CDC_HEADER_TYPE: /* maybe check version */
+ break; /* for now we ignore it */
+ case USB_CDC_ACM_TYPE:
+ ac_management_function = buffer[3];
+ break;
+ case USB_CDC_CALL_MANAGEMENT_TYPE:
+ call_management_function = buffer[3];
+ call_interface_num = buffer[4];
+ if ((quirks & NOT_A_MODEM) == 0
+ && (call_management_function & 3) != 3)
+ dev_err(&intf->dev,
+ "This device cannot do calls on its own. It is not a modem.\n");
+ break;
+ default:
+ /* there are LOTS more CDC descriptors that
+ * could legitimately be found here.
+ */
+ dev_dbg(&intf->dev, "Ignoring descriptor: "
+ "type %02x, length %d\n", buffer[2], buffer[0]);
+ break;
+ }
+next_desc:
+ buflen -= buffer[0];
+ buffer += buffer[0];
+ }
+
+ if (!union_header) {
+ if (call_interface_num > 0) {
+ dev_dbg(&intf->dev,
+ "No union descriptor, using call management descriptor\n");
+ /* quirks for Droids MuIn LCD */
+ if (quirks & NO_DATA_INTERFACE)
+ data_interface = usb_ifnum_to_if(usb_dev, 0);
+ else
+ data_interface =
+ usb_ifnum_to_if(usb_dev,
+ (data_interface_num =
+ call_interface_num));
+ control_interface = intf;
+ } else {
+ if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
+ dev_dbg(&intf->dev,
+ "No union descriptor, giving up\n");
+ return -ENODEV;
+ } else {
+ dev_warn(&intf->dev,
+ "No union descriptor, testing for castrated device\n");
+ combined_interfaces = 1;
+ control_interface = data_interface = intf;
+ goto look_for_collapsed_interface;
+ }
+ }
+ } else {
+ control_interface =
+ usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
+ data_interface =
+ usb_ifnum_to_if(usb_dev,
+ (data_interface_num =
+ union_header->bSlaveInterface0));
+ if (!control_interface || !data_interface) {
+ dev_dbg(&intf->dev, "no interfaces\n");
+ return -ENODEV;
+ }
+ }
+
+ if (data_interface_num != call_interface_num)
+ dev_dbg(&intf->dev,
+ "Separate call control interface. That is not fully supported.\n");
+
+ if (control_interface == data_interface) {
+ /* some broken devices designed for windows work this way */
+ dev_warn(&intf->dev,
+ "Control and data interfaces are not separated!\n");
+ combined_interfaces = 1;
+ /* a popular other OS doesn't use it */
+ quirks |= NO_CAP_LINE;
+ if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
+ dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
+ return -EINVAL;
+ }
+look_for_collapsed_interface:
+ for (i = 0; i < 3; i++) {
+ struct usb_endpoint_descriptor *ep;
+ ep = &data_interface->cur_altsetting->endpoint[i].desc;
+
+ if (usb_endpoint_is_int_in(ep))
+ epctrl = ep;
+ else if (usb_endpoint_is_bulk_out(ep))
+ epwrite = ep;
+ else if (usb_endpoint_is_bulk_in(ep))
+ epread = ep;
+ else
+ return -EINVAL;
+ }
+ if (!epctrl || !epread || !epwrite)
+ return -ENODEV;
+ else
+ goto made_compressed_probe;
+ }
+
+skip_normal_probe:
+
+ /*workaround for switched interfaces */
+ if (data_interface->cur_altsetting->desc.bInterfaceClass
+ != CDC_DATA_INTERFACE_TYPE) {
+ if (control_interface->cur_altsetting->desc.bInterfaceClass
+ == CDC_DATA_INTERFACE_TYPE) {
+ struct usb_interface *t;
+ dev_dbg(&intf->dev,
+ "Your device has switched interfaces.\n");
+ t = control_interface;
+ control_interface = data_interface;
+ data_interface = t;
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ /* Accept probe requests only for the control interface */
+ if (!combined_interfaces && intf != control_interface)
+ return -ENODEV;
+
+ if (!combined_interfaces && usb_interface_claimed(data_interface)) {
+ /* valid in this context */
+ dev_dbg(&intf->dev, "The data interface isn't available\n");
+ return -EBUSY;
+ }
+
+ if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
+ control_interface->cur_altsetting->desc.bNumEndpoints == 0)
+ return -EINVAL;
+
+ epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
+ epread = &data_interface->cur_altsetting->endpoint[0].desc;
+ epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
+
+ /* workaround for switched endpoints */
+ if (!usb_endpoint_dir_in(epread)) {
+ /* descriptors are swapped */
+ struct usb_endpoint_descriptor *t;
+ dev_dbg(&intf->dev,
+ "The data interface has switched endpoints\n");
+ t = epread;
+ epread = epwrite;
+ epwrite = t;
+ }
+made_compressed_probe:
+ dev_dbg(&intf->dev, "interfaces are valid\n");
+
+ xr_usb_serial = kzalloc(sizeof(struct xr_usb_serial), GFP_KERNEL);
+ if (xr_usb_serial == NULL) {
+ dev_err(&intf->dev, "out of memory (xr_usb_serial kzalloc)\n");
+ goto alloc_fail;
+ }
+
+ minor = xr_usb_serial_alloc_minor(xr_usb_serial);
+ if (minor == XR_USB_SERIAL_TTY_MINORS) {
+ dev_err(&intf->dev, "no more free xr_usb_serial devices\n");
+ kfree(xr_usb_serial);
+ return -ENODEV;
+ }
+
+ ctrlsize = usb_endpoint_maxp(epctrl);
+ readsize = usb_endpoint_maxp(epread) *
+ (quirks == SINGLE_RX_URB ? 1 : 2);
+ xr_usb_serial->combined_interfaces = combined_interfaces;
+ xr_usb_serial->writesize = usb_endpoint_maxp(epwrite) * 20;
+ xr_usb_serial->control = control_interface;
+ xr_usb_serial->data = data_interface;
+ xr_usb_serial->minor = minor;
+ xr_usb_serial->dev = usb_dev;
+ xr_usb_serial->ctrl_caps = ac_management_function;
+ if (quirks & NO_CAP_LINE)
+ xr_usb_serial->ctrl_caps &= ~USB_CDC_CAP_LINE;
+ xr_usb_serial->ctrlsize = ctrlsize;
+ xr_usb_serial->readsize = readsize;
+ xr_usb_serial->rx_buflimit = num_rx_buf;
+ INIT_WORK(&xr_usb_serial->work, xr_usb_serial_softint);
+ spin_lock_init(&xr_usb_serial->write_lock);
+ spin_lock_init(&xr_usb_serial->read_lock);
+ mutex_init(&xr_usb_serial->mutex);
+ xr_usb_serial->rx_endpoint =
+ usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
+ xr_usb_serial->is_int_ep = usb_endpoint_xfer_int(epread);
+ if (xr_usb_serial->is_int_ep)
+ xr_usb_serial->bInterval = epread->bInterval;
+ tty_port_init(&xr_usb_serial->port);
+ xr_usb_serial->port.ops = &xr_usb_serial_port_ops;
+ xr_usb_serial->DeviceVendor = id->idVendor;
+ xr_usb_serial->DeviceProduct = id->idProduct;
+#if 0
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1410) { //map the serial port A B C D to blocknum 0 1 2 3 for the xr21v141x device
+ xr_usb_serial->channel = epwrite->bEndpointAddress - 1;
+ } else if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1420) { //map the serial port A B C D to blocknum 0 2 4 6 for the xr21B142x device
+ xr_usb_serial->channel = (epwrite->bEndpointAddress - 4) * 2;
+ } else {
+ xr_usb_serial->channel = epwrite->bEndpointAddress;
+ }
+#else
+ xr_usb_serial->channel = epwrite->bEndpointAddress;
+ dev_dbg(&intf->dev, "epwrite->bEndpointAddress =%d\n",
+ epwrite->bEndpointAddress);
+#endif
+ buf =
+ usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL,
+ &xr_usb_serial->ctrl_dma);
+ if (!buf) {
+ dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
+ goto alloc_fail2;
+ }
+ xr_usb_serial->ctrl_buffer = buf;
+
+ if (xr_usb_serial_write_buffers_alloc(xr_usb_serial) < 0) {
+ dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
+ goto alloc_fail4;
+ }
+
+ xr_usb_serial->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!xr_usb_serial->ctrlurb) {
+ dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
+ goto alloc_fail5;
+ }
+ for (i = 0; i < num_rx_buf; i++) {
+ struct xr_usb_serial_rb *rb = &(xr_usb_serial->read_buffers[i]);
+ struct urb *urb;
+
+ rb->base =
+ usb_alloc_coherent(xr_usb_serial->dev, readsize, GFP_KERNEL,
+ &rb->dma);
+ if (!rb->base) {
+ dev_err(&intf->dev, "out of memory "
+ "(read bufs usb_alloc_coherent)\n");
+ goto alloc_fail6;
+ }
+ rb->index = i;
+ rb->instance = xr_usb_serial;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb) {
+ dev_err(&intf->dev,
+ "out of memory (read urbs usb_alloc_urb)\n");
+ goto alloc_fail6;
+ }
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ urb->transfer_dma = rb->dma;
+ if (xr_usb_serial->is_int_ep) {
+ usb_fill_int_urb(urb, xr_usb_serial->dev,
+ xr_usb_serial->rx_endpoint,
+ rb->base,
+ xr_usb_serial->readsize,
+ xr_usb_serial_read_bulk_callback, rb,
+ xr_usb_serial->bInterval);
+ } else {
+ usb_fill_bulk_urb(urb, xr_usb_serial->dev,
+ xr_usb_serial->rx_endpoint,
+ rb->base,
+ xr_usb_serial->readsize,
+ xr_usb_serial_read_bulk_callback, rb);
+ }
+
+ xr_usb_serial->read_urbs[i] = urb;
+ __set_bit(i, &xr_usb_serial->read_urbs_free);
+ }
+ for (i = 0; i < XR_USB_SERIAL_NW; i++) {
+ struct xr_usb_serial_wb *snd = &(xr_usb_serial->wb[i]);
+
+ snd->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (snd->urb == NULL) {
+ dev_err(&intf->dev,
+ "out of memory (write urbs usb_alloc_urb)\n");
+ goto alloc_fail7;
+ }
+
+ if (usb_endpoint_xfer_int(epwrite))
+ usb_fill_int_urb(snd->urb, usb_dev,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+ usb_sndbulkpipe(usb_dev,
+ epwrite->
+ bEndpointAddress),
+#else
+ usb_sndintpipe(usb_dev,
+ epwrite->
+ bEndpointAddress),
+#endif
+ NULL, xr_usb_serial->writesize,
+ xr_usb_serial_write_bulk, snd,
+ epwrite->bInterval);
+ else
+ usb_fill_bulk_urb(snd->urb, usb_dev,
+ usb_sndbulkpipe(usb_dev,
+ epwrite->
+ bEndpointAddress),
+ NULL, xr_usb_serial->writesize,
+ xr_usb_serial_write_bulk, snd);
+ snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ snd->instance = xr_usb_serial;
+ }
+
+ usb_set_intfdata(intf, xr_usb_serial);
+
+ i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
+ if (i < 0)
+ goto alloc_fail7;
+
+ if (cfd) { /* export the country data */
+ xr_usb_serial->country_codes =
+ kmalloc(cfd->bLength - 4, GFP_KERNEL);
+ if (!xr_usb_serial->country_codes)
+ goto skip_countries;
+ xr_usb_serial->country_code_size = cfd->bLength - 4;
+ memcpy(xr_usb_serial->country_codes, (u8 *) & cfd->wCountyCode0,
+ cfd->bLength - 4);
+ xr_usb_serial->country_rel_date = cfd->iCountryCodeRelDate;
+
+ i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
+ if (i < 0) {
+ kfree(xr_usb_serial->country_codes);
+ xr_usb_serial->country_codes = NULL;
+ xr_usb_serial->country_code_size = 0;
+ goto skip_countries;
+ }
+
+ i = device_create_file(&intf->dev,
+ &dev_attr_iCountryCodeRelDate);
+ if (i < 0) {
+ device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
+ kfree(xr_usb_serial->country_codes);
+ xr_usb_serial->country_codes = NULL;
+ xr_usb_serial->country_code_size = 0;
+ goto skip_countries;
+ }
+ }
+
+skip_countries:
+ usb_fill_int_urb(xr_usb_serial->ctrlurb, usb_dev,
+ usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
+ xr_usb_serial->ctrl_buffer, ctrlsize,
+ xr_usb_serial_ctrl_irq, xr_usb_serial,
+ /* works around buggy devices */
+ epctrl->bInterval ? epctrl->bInterval : 0xff);
+ xr_usb_serial->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ xr_usb_serial->ctrlurb->transfer_dma = xr_usb_serial->ctrl_dma;
+
+ dev_info(&intf->dev, "ttyXR_USB_SERIAL%d: USB XR_USB_SERIAL device\n",
+ minor);
+
+ xr_usb_serial_pre_setup(xr_usb_serial);
+
+ xr_usb_serial_set_control(xr_usb_serial, xr_usb_serial->ctrlout);
+
+ xr_usb_serial->line.dwDTERate = cpu_to_le32(9600);
+ xr_usb_serial->line.bDataBits = 8;
+ xr_usb_serial_set_line(xr_usb_serial, &xr_usb_serial->line);
+
+ usb_driver_claim_interface(&xr_usb_serial_driver, data_interface,
+ xr_usb_serial);
+ usb_set_intfdata(data_interface, xr_usb_serial);
+
+ usb_get_intf(control_interface);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+ tty_register_device(xr_usb_serial_tty_driver, minor,
+ &control_interface->dev);
+#else
+ tty_dev =
+ tty_port_register_device(&xr_usb_serial->port,
+ xr_usb_serial_tty_driver, minor,
+ &control_interface->dev);
+ if (IS_ERR(tty_dev)) {
+ rv = PTR_ERR(tty_dev);
+ goto alloc_fail8;
+ }
+#endif
+
+ return 0;
+alloc_fail8:
+ if (xr_usb_serial->country_codes) {
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_wCountryCodes);
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_iCountryCodeRelDate);
+ }
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_bmCapabilities);
+alloc_fail7:
+ usb_set_intfdata(intf, NULL);
+ for (i = 0; i < XR_USB_SERIAL_NW; i++)
+ usb_free_urb(xr_usb_serial->wb[i].urb);
+alloc_fail6:
+ for (i = 0; i < num_rx_buf; i++)
+ usb_free_urb(xr_usb_serial->read_urbs[i]);
+ xr_usb_serial_read_buffers_free(xr_usb_serial);
+ usb_free_urb(xr_usb_serial->ctrlurb);
+alloc_fail5:
+ xr_usb_serial_write_buffers_free(xr_usb_serial);
+alloc_fail4:
+ usb_free_coherent(usb_dev, ctrlsize, xr_usb_serial->ctrl_buffer,
+ xr_usb_serial->ctrl_dma);
+alloc_fail2:
+ xr_usb_serial_release_minor(xr_usb_serial);
+ kfree(xr_usb_serial);
+alloc_fail:
+ return rv;
+}
+
+static void stop_data_traffic(struct xr_usb_serial *xr_usb_serial)
+{
+ int i;
+
+ dev_dbg(&xr_usb_serial->control->dev, "%s\n", __func__);
+
+ usb_kill_urb(xr_usb_serial->ctrlurb);
+ for (i = 0; i < XR_USB_SERIAL_NW; i++)
+ usb_kill_urb(xr_usb_serial->wb[i].urb);
+ for (i = 0; i < xr_usb_serial->rx_buflimit; i++)
+ usb_kill_urb(xr_usb_serial->read_urbs[i]);
+
+ cancel_work_sync(&xr_usb_serial->work);
+}
+
+static void xr_usb_serial_disconnect(struct usb_interface *intf)
+{
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+ struct usb_device *usb_dev = interface_to_usbdev(intf);
+ struct tty_struct *tty;
+ int i;
+
+ dev_dbg(&intf->dev, "%s\n", __func__);
+
+ /* sibling interface is already cleaning up */
+ if (!xr_usb_serial)
+ return;
+
+ mutex_lock(&xr_usb_serial->mutex);
+ xr_usb_serial->disconnected = true;
+ if (xr_usb_serial->country_codes) {
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_wCountryCodes);
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_iCountryCodeRelDate);
+ }
+ device_remove_file(&xr_usb_serial->control->dev,
+ &dev_attr_bmCapabilities);
+ usb_set_intfdata(xr_usb_serial->control, NULL);
+ usb_set_intfdata(xr_usb_serial->data, NULL);
+ mutex_unlock(&xr_usb_serial->mutex);
+
+ tty = tty_port_tty_get(&xr_usb_serial->port);
+ if (tty) {
+ tty_vhangup(tty);
+ tty_kref_put(tty);
+ }
+ stop_data_traffic(xr_usb_serial);
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 7, 0)
+ tty_unregister_device(xr_usb_serial_tty_driver, xr_usb_serial->minor);
+#endif
+
+ usb_free_urb(xr_usb_serial->ctrlurb);
+ for (i = 0; i < XR_USB_SERIAL_NW; i++)
+ usb_free_urb(xr_usb_serial->wb[i].urb);
+ for (i = 0; i < xr_usb_serial->rx_buflimit; i++)
+ usb_free_urb(xr_usb_serial->read_urbs[i]);
+ xr_usb_serial_write_buffers_free(xr_usb_serial);
+ usb_free_coherent(usb_dev, xr_usb_serial->ctrlsize,
+ xr_usb_serial->ctrl_buffer, xr_usb_serial->ctrl_dma);
+ xr_usb_serial_read_buffers_free(xr_usb_serial);
+
+ if (!xr_usb_serial->combined_interfaces)
+ usb_driver_release_interface(&xr_usb_serial_driver,
+ intf ==
+ xr_usb_serial->
+ control ? xr_usb_serial->
+ data : xr_usb_serial->control);
+
+ tty_port_put(&xr_usb_serial->port);
+}
+
+#ifdef CONFIG_PM
+static int xr_usb_serial_suspend(struct usb_interface *intf,
+ pm_message_t message)
+{
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+ int cnt;
+
+ if (PMSG_IS_AUTO(message)) {
+ int b;
+
+ spin_lock_irq(&xr_usb_serial->write_lock);
+ b = xr_usb_serial->transmitting;
+ spin_unlock_irq(&xr_usb_serial->write_lock);
+ if (b)
+ return -EBUSY;
+ }
+
+ spin_lock_irq(&xr_usb_serial->read_lock);
+ spin_lock(&xr_usb_serial->write_lock);
+ cnt = xr_usb_serial->susp_count++;
+ spin_unlock(&xr_usb_serial->write_lock);
+ spin_unlock_irq(&xr_usb_serial->read_lock);
+
+ if (cnt)
+ return 0;
+
+ if (test_bit(ASYNCB_INITIALIZED, &xr_usb_serial->port.flags))
+ stop_data_traffic(xr_usb_serial);
+
+ return 0;
+}
+
+static int xr_usb_serial_resume(struct usb_interface *intf)
+{
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+ struct xr_usb_serial_wb *wb;
+ int rv = 0;
+ int cnt;
+
+ spin_lock_irq(&xr_usb_serial->read_lock);
+ xr_usb_serial->susp_count -= 1;
+ cnt = xr_usb_serial->susp_count;
+ spin_unlock_irq(&xr_usb_serial->read_lock);
+
+ if (cnt)
+ return 0;
+
+ if (test_bit(ASYNCB_INITIALIZED, &xr_usb_serial->port.flags)) {
+ rv = usb_submit_urb(xr_usb_serial->ctrlurb, GFP_NOIO);
+
+ spin_lock_irq(&xr_usb_serial->write_lock);
+ if (xr_usb_serial->delayed_wb) {
+ wb = xr_usb_serial->delayed_wb;
+ xr_usb_serial->delayed_wb = NULL;
+ spin_unlock_irq(&xr_usb_serial->write_lock);
+ xr_usb_serial_start_wb(xr_usb_serial, wb);
+ } else {
+ spin_unlock_irq(&xr_usb_serial->write_lock);
+ }
+
+ /*
+ * delayed error checking because we must
+ * do the write path at all cost
+ */
+ if (rv < 0)
+ goto err_out;
+
+ rv = xr_usb_serial_submit_read_urbs(xr_usb_serial, GFP_NOIO);
+ }
+
+err_out:
+ return rv;
+}
+
+static int xr_usb_serial_reset_resume(struct usb_interface *intf)
+{
+ struct xr_usb_serial *xr_usb_serial = usb_get_intfdata(intf);
+ struct tty_struct *tty;
+ if (test_bit(ASYNCB_INITIALIZED, &xr_usb_serial->port.flags)) {
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 9, 0)
+ tty_port_tty_hangup(&xr_usb_serial->port, false);
+#else
+ tty = tty_port_tty_get(&xr_usb_serial->port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
+#endif
+ }
+ return xr_usb_serial_resume(intf);
+}
+
+#endif /* CONFIG_PM */
+
+/*
+ * USB driver structure.
+ */
+static const struct usb_device_id xr_usb_serial_ids[] = {
+ {USB_DEVICE(0x04e2, 0x1410)},
+ {USB_DEVICE(0x04e2, 0x1411)},
+ {USB_DEVICE(0x04e2, 0x1412)},
+ {USB_DEVICE(0x04e2, 0x1414)},
+ {USB_DEVICE(0x04e2, 0x1420)},
+ {USB_DEVICE(0x04e2, 0x1421)},
+ {USB_DEVICE(0x04e2, 0x1422)},
+ {USB_DEVICE(0x04e2, 0x1424)},
+ {USB_DEVICE(0x04e2, 0x1400)},
+ {USB_DEVICE(0x04e2, 0x1401)},
+ {USB_DEVICE(0x04e2, 0x1402)},
+ {USB_DEVICE(0x04e2, 0x1403)},
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, xr_usb_serial_ids);
+
+static struct usb_driver xr_usb_serial_driver = {
+ .name = "cdc_xr_usb_serial",
+ .probe = xr_usb_serial_probe,
+ .disconnect = xr_usb_serial_disconnect,
+#ifdef CONFIG_PM
+ .suspend = xr_usb_serial_suspend,
+ .resume = xr_usb_serial_resume,
+ .reset_resume = xr_usb_serial_reset_resume,
+#endif
+ .id_table = xr_usb_serial_ids,
+#ifdef CONFIG_PM
+ .supports_autosuspend = 1,
+#endif
+ .disable_hub_initiated_lpm = 1,
+};
+
+/*
+ * TTY driver structures.
+ */
+
+static const struct tty_operations xr_usb_serial_ops = {
+ .install = xr_usb_serial_tty_install,
+ .open = xr_usb_serial_tty_open,
+ .close = xr_usb_serial_tty_close,
+ .cleanup = xr_usb_serial_tty_cleanup,
+ .hangup = xr_usb_serial_tty_hangup,
+ .write = xr_usb_serial_tty_write,
+ .write_room = xr_usb_serial_tty_write_room,
+ .ioctl = xr_usb_serial_tty_ioctl,
+ .throttle = xr_usb_serial_tty_throttle,
+ .unthrottle = xr_usb_serial_tty_unthrottle,
+ .chars_in_buffer = xr_usb_serial_tty_chars_in_buffer,
+ .break_ctl = xr_usb_serial_tty_break_ctl,
+ .set_termios = xr_usb_serial_tty_set_termios,
+ .tiocmget = xr_usb_serial_tty_tiocmget,
+ .tiocmset = xr_usb_serial_tty_tiocmset,
+};
+
+/*
+ * Init / exit.
+ */
+
+static int __init xr_usb_serial_init(void)
+{
+ int retval;
+ xr_usb_serial_tty_driver = alloc_tty_driver(XR_USB_SERIAL_TTY_MINORS);
+ if (!xr_usb_serial_tty_driver)
+ return -ENOMEM;
+ xr_usb_serial_tty_driver->driver_name = "xr_usb_serial",
+ xr_usb_serial_tty_driver->name = "ttyXRUSB",
+ xr_usb_serial_tty_driver->major = XR_USB_SERIAL_TTY_MAJOR,
+ xr_usb_serial_tty_driver->minor_start = 0,
+ xr_usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
+ xr_usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL,
+ xr_usb_serial_tty_driver->flags =
+ TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ xr_usb_serial_tty_driver->init_termios = tty_std_termios;
+ xr_usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
+ HUPCL | CLOCAL;
+ tty_set_operations(xr_usb_serial_tty_driver, &xr_usb_serial_ops);
+
+ retval = tty_register_driver(xr_usb_serial_tty_driver);
+ if (retval) {
+ put_tty_driver(xr_usb_serial_tty_driver);
+ return retval;
+ }
+
+ retval = usb_register(&xr_usb_serial_driver);
+ if (retval) {
+ tty_unregister_driver(xr_usb_serial_tty_driver);
+ put_tty_driver(xr_usb_serial_tty_driver);
+ return retval;
+ }
+
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
+
+ return 0;
+}
+
+static void __exit xr_usb_serial_exit(void)
+{
+ usb_deregister(&xr_usb_serial_driver);
+ tty_unregister_driver(xr_usb_serial_tty_driver);
+ put_tty_driver(xr_usb_serial_tty_driver);
+}
+
+module_init(xr_usb_serial_init);
+module_exit(xr_usb_serial_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CHARDEV_MAJOR(XR_USB_SERIAL_TTY_MAJOR);
new file mode 100644
@@ -0,0 +1,181 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * CMSPAR, some architectures can't have space and mark parity.
+ */
+
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+
+/*
+ * Major and minor numbers.
+ */
+
+#define XR_USB_SERIAL_TTY_MAJOR 266
+#define XR_USB_SERIAL_TTY_MINORS 32
+
+/*
+ * Requests.
+ */
+
+#define USB_RT_XR_USB_SERIAL (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
+
+/*
+ * Output control lines.
+ */
+
+#define XR_USB_SERIAL_CTRL_DTR 0x01
+#define XR_USB_SERIAL_CTRL_RTS 0x02
+
+/*
+ * Input control lines and line errors.
+ */
+
+#define XR_USB_SERIAL_CTRL_DCD 0x01
+#define XR_USB_SERIAL_CTRL_DSR 0x02
+#define XR_USB_SERIAL_CTRL_BRK 0x04
+#define XR_USB_SERIAL_CTRL_RI 0x08
+
+#define XR_USB_SERIAL_CTRL_FRAMING 0x10
+#define XR_USB_SERIAL_CTRL_PARITY 0x20
+#define XR_USB_SERIAL_CTRL_OVERRUN 0x40
+
+/*
+ * Internal driver structures.
+ */
+
+/*
+ * The only reason to have several buffers is to accommodate assumptions
+ * in line disciplines. They ask for empty space amount, receive our URB size,
+ * and proceed to issue several 1-character writes, assuming they will fit.
+ * The very first write takes a complete URB. Fortunately, this only happens
+ * when processing onlcr, so we only need 2 buffers. These values must be
+ * powers of 2.
+ */
+#define XR_USB_SERIAL_NW 16
+#define XR_USB_SERIAL_NR 16
+
+struct xr_usb_serial_wb {
+ unsigned char *buf;
+ dma_addr_t dmah;
+ int len;
+ int use;
+ struct urb *urb;
+ struct xr_usb_serial *instance;
+};
+
+struct xr_usb_serial_rb {
+ int size;
+ unsigned char *base;
+ dma_addr_t dma;
+ int index;
+ struct xr_usb_serial *instance;
+};
+
+struct reg_addr_map {
+ unsigned int uart_enable_addr;
+ unsigned int uart_format_addr;
+ unsigned int uart_flow_addr;
+ unsigned int uart_loopback_addr;
+ unsigned int uart_xon_char_addr;
+ unsigned int uart_xoff_char_addr;
+ unsigned int uart_gpio_mode_addr;
+ unsigned int uart_gpio_dir_addr;
+ unsigned int uart_gpio_set_addr;
+ unsigned int uart_gpio_clr_addr;
+ unsigned int uart_gpio_status_addr;
+ unsigned int tx_break_addr;
+ unsigned int uart_custom_driver;
+ unsigned int uart_low_latency;
+};
+
+struct xr_usb_serial {
+ struct usb_device *dev; /* the corresponding usb device */
+ struct usb_interface *control; /* control interface */
+ struct usb_interface *data; /* data interface */
+ struct tty_port port; /* our tty port data */
+ struct urb *ctrlurb; /* urbs */
+ u8 *ctrl_buffer; /* buffers of urbs */
+ dma_addr_t ctrl_dma; /* dma handles of buffers */
+ u8 *country_codes; /* country codes from device */
+ unsigned int country_code_size; /* size of this buffer */
+ unsigned int country_rel_date; /* release date of version */
+ struct xr_usb_serial_wb wb[XR_USB_SERIAL_NW];
+ unsigned long read_urbs_free;
+ struct urb *read_urbs[XR_USB_SERIAL_NR];
+ struct xr_usb_serial_rb read_buffers[XR_USB_SERIAL_NR];
+ int rx_buflimit;
+ int rx_endpoint;
+ spinlock_t read_lock;
+ int write_used; /* number of non-empty write buffers */
+ int transmitting;
+ spinlock_t write_lock;
+ struct mutex mutex;
+ bool disconnected;
+ struct usb_cdc_line_coding line; /* bits, stop, parity */
+ struct work_struct work; /* work queue entry for line discipline waking up */
+ unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */
+ unsigned int ctrlout; /* output control lines (DTR, RTS) */
+ unsigned int writesize; /* max packet size for the output bulk endpoint */
+ unsigned int readsize, ctrlsize; /* buffer sizes for freeing */
+ unsigned int minor; /* xr_usb_serial minor number */
+ unsigned char clocal; /* termios CLOCAL */
+ unsigned int ctrl_caps; /* control capabilities from the class specific header */
+ unsigned int susp_count; /* number of suspended interfaces */
+ unsigned int combined_interfaces:1; /* control and data collapsed */
+ unsigned int is_int_ep:1; /* interrupt endpoints contrary to spec used */
+ unsigned int throttled:1; /* actually throttled */
+ unsigned int throttle_req:1; /* throttle requested */
+ u8 bInterval;
+ struct xr_usb_serial_wb *delayed_wb; /* write queued for a device about to be woken */
+ unsigned int channel;
+ unsigned short DeviceVendor;
+ unsigned short DeviceProduct;
+ struct reg_addr_map reg_map;
+};
+
+#define CDC_DATA_INTERFACE_TYPE 0x0a
+
+/* constants describing various quirks and errors */
+#define NO_UNION_NORMAL 1
+#define SINGLE_RX_URB 2
+#define NO_CAP_LINE 4
+#define NOT_A_MODEM 8
+#define NO_DATA_INTERFACE 16
+#define IGNORE_DEVICE 32
+
+#define UART_ENABLE_TX 1
+#define UART_ENABLE_RX 2
+
+#define UART_GPIO_CLR_DTR 0x8
+#define UART_GPIO_SET_DTR 0x8
+#define UART_GPIO_CLR_RTS 0x20
+#define UART_GPIO_SET_RTS 0x20
+
+#define LOOPBACK_ENABLE_TX_RX 1
+#define LOOPBACK_ENABLE_RTS_CTS 2
+#define LOOPBACK_ENABLE_DTR_DSR 4
+
+#define UART_FLOW_MODE_NONE 0x0
+#define UART_FLOW_MODE_HW 0x1
+#define UART_FLOW_MODE_SW 0x2
+
+#define UART_GPIO_MODE_SEL_GPIO 0x0
+#define UART_GPIO_MODE_SEL_RTS_CTS 0x1
+
+#define XR2280x_FUNC_MGR_OFFSET 0x40
new file mode 100644
@@ -0,0 +1,766 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define XR_SET_MAP_XR2280X 5
+#define XR_GET_MAP_XR2280X 5
+
+#define XR_SET_MAP_XR21B142X 0
+#define XR_GET_MAP_XR21B142X 0
+
+#define XR_SET_MAP_XR21V141X 0
+#define XR_GET_MAP_XR21V141X 1
+
+#define XR_SET_MAP_XR21B1411 0
+#define XR_GET_MAP_XR21B1411 1
+
+int xr_usb_serial_set_reg(struct xr_usb_serial *xr_usb_serial, int regnum,
+ int value)
+{
+ int result;
+ int channel = 0;
+ dev_dbg(&xr_usb_serial->control->dev, "%s Channel:%d 0x%02x = 0x%02x\n",
+ __func__, channel, regnum, value);
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1400) {
+ int XR2280xaddr = XR2280x_FUNC_MGR_OFFSET + regnum;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR2280X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ XR2280xaddr, /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+
+ } else if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+
+ if (xr_usb_serial->channel)
+ channel = xr_usb_serial->channel - 1;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21V141X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ regnum | (channel << 8), /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else if (xr_usb_serial->DeviceProduct == 0x1411) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21B1411, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ regnum, /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else if ((xr_usb_serial->DeviceProduct == 0x1420) ||
+ (xr_usb_serial->DeviceProduct == 0x1422) ||
+ (xr_usb_serial->DeviceProduct == 0x1424))
+ {
+
+ channel = (xr_usb_serial->channel - 4) * 2;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21B142X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR | 1, /* request_type */
+ value, /* request value */
+ regnum | (channel << 8), /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else {
+ result = -1;
+ }
+ if (result < 0)
+ dev_dbg(&xr_usb_serial->control->dev, "%s Error:%d\n", __func__,
+ result);
+ return result;
+
+}
+
+int xr_usb_serial_set_reg_ext(struct xr_usb_serial *xr_usb_serial, int channel,
+ int regnum, int value)
+{
+ int result;
+ int XR2280xaddr = XR2280x_FUNC_MGR_OFFSET + regnum;
+ dev_dbg(&xr_usb_serial->control->dev, "%s channel:%d 0x%02x = 0x%02x\n",
+ __func__, channel, regnum, value);
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1400) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR2280X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ XR2280xaddr, /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+
+ } else if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21V141X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ regnum | (channel << 8), /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else if (xr_usb_serial->DeviceProduct == 0x1411) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21B1411, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR, /* request_type */
+ value, /* request value */
+ regnum, /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else if ((xr_usb_serial->DeviceProduct == 0x1420) ||
+ (xr_usb_serial->DeviceProduct == 0x1422) ||
+ (xr_usb_serial->DeviceProduct == 0x1424)) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_sndctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_SET_MAP_XR21B142X, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR | 1, /* request_type */
+ value, /* request value */
+ regnum | (channel << 8), /* index */
+ NULL, /* data */
+ 0, /* size */
+ 5000); /* timeout */
+ } else {
+ result = -1;
+ }
+ if (result < 0)
+ dev_dbg(&xr_usb_serial->control->dev, "%s Error:%d\n", __func__,
+ result);
+ return result;
+
+}
+
+int xr_usb_serial_get_reg(struct xr_usb_serial *xr_usb_serial, int regnum,
+ short *value)
+{
+ int result;
+ int channel = 0;
+
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1400) {
+ int XR2280xaddr = XR2280x_FUNC_MGR_OFFSET + regnum;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR2280X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ XR2280xaddr, /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+
+ } else if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ if (xr_usb_serial->channel)
+ channel = xr_usb_serial->channel - 1;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21V141X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ regnum | (channel << 8), /* index */
+ value, /* data */
+ 1, /* size */
+ 5000); /* timeout */
+ } else if (xr_usb_serial->DeviceProduct == 0x1411) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21B1411, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ regnum, /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+ } else if ((xr_usb_serial->DeviceProduct == 0x1420) ||
+ (xr_usb_serial->DeviceProduct == 0x1422) ||
+ (xr_usb_serial->DeviceProduct == 0x1424))
+ {
+ channel = (xr_usb_serial->channel - 4) * 2;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21B142X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR | 1, /* request_type */
+ 0, /* request value */
+ regnum | (channel << 8), /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+ } else {
+ result = -1;
+ }
+
+ if (result < 0)
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s channel:%d Reg 0x%x Error:%d\n", __func__, channel,
+ regnum, result);
+ else
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s channel:%d 0x%x = 0x%04x\n", __func__, channel,
+ regnum, *value);
+
+ return result;
+
+}
+
+int xr_usb_serial_get_reg_ext(struct xr_usb_serial *xr_usb_serial, int channel,
+ int regnum, short *value)
+{
+ int result;
+ int XR2280xaddr = XR2280x_FUNC_MGR_OFFSET + regnum;
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1400) {
+
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR2280X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ XR2280xaddr, /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+
+ } else if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ unsigned char reg_value = 0;
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21V141X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ regnum | (channel << 8), /* index */
+ ®_value, /* data */
+ 1, /* size */
+ 5000); /* timeout */
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_get_reg_ext reg:%x\n", reg_value);
+ *value = reg_value;
+ } else if (xr_usb_serial->DeviceProduct == 0x1411) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21B1411, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR, /* request_type */
+ 0, /* request value */
+ regnum | (channel << 8), /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+ } else if ((xr_usb_serial->DeviceProduct == 0x1420) ||
+ (xr_usb_serial->DeviceProduct == 0x1422) ||
+ (xr_usb_serial->DeviceProduct == 0x1424)) {
+ result = usb_control_msg(xr_usb_serial->dev, /* usb device */
+ usb_rcvctrlpipe(xr_usb_serial->dev, 0), /* endpoint pipe */
+ XR_GET_MAP_XR21B142X, /* request */
+ USB_DIR_IN | USB_TYPE_VENDOR | 1, /* request_type */
+ 0, /* request value */
+ regnum | (channel << 8), /* index */
+ value, /* data */
+ 2, /* size */
+ 5000); /* timeout */
+ } else {
+ result = -1;
+ }
+
+ if (result < 0)
+ dev_dbg(&xr_usb_serial->control->dev, "%s Error:%d\n", __func__,
+ result);
+ else
+ dev_dbg(&xr_usb_serial->control->dev,
+ "%s channel:%d 0x%x = 0x%04x\n", __func__, channel,
+ regnum, *value);
+
+ return result;
+
+}
+
+struct xr21v141x_baud_rate {
+ unsigned int tx;
+ unsigned int rx0;
+ unsigned int rx1;
+};
+
+static struct xr21v141x_baud_rate xr21v141x_baud_rates[] = {
+ {0x000, 0x000, 0x000},
+ {0x000, 0x000, 0x000},
+ {0x100, 0x000, 0x100},
+ {0x020, 0x400, 0x020},
+ {0x010, 0x100, 0x010},
+ {0x208, 0x040, 0x208},
+ {0x104, 0x820, 0x108},
+ {0x844, 0x210, 0x884},
+ {0x444, 0x110, 0x444},
+ {0x122, 0x888, 0x224},
+ {0x912, 0x448, 0x924},
+ {0x492, 0x248, 0x492},
+ {0x252, 0x928, 0x292},
+ {0X94A, 0X4A4, 0XA52},
+ {0X52A, 0XAA4, 0X54A},
+ {0XAAA, 0x954, 0X4AA},
+ {0XAAA, 0x554, 0XAAA},
+ {0x555, 0XAD4, 0X5AA},
+ {0XB55, 0XAB4, 0X55A},
+ {0X6B5, 0X5AC, 0XB56},
+ {0X5B5, 0XD6C, 0X6D6},
+ {0XB6D, 0XB6A, 0XDB6},
+ {0X76D, 0X6DA, 0XBB6},
+ {0XEDD, 0XDDA, 0X76E},
+ {0XDDD, 0XBBA, 0XEEE},
+ {0X7BB, 0XF7A, 0XDDE},
+ {0XF7B, 0XEF6, 0X7DE},
+ {0XDF7, 0XBF6, 0XF7E},
+ {0X7F7, 0XFEE, 0XEFE},
+ {0XFDF, 0XFBE, 0X7FE},
+ {0XF7F, 0XEFE, 0XFFE},
+ {0XFFF, 0XFFE, 0XFFD},
+};
+
+#define UART_CLOCK_DIVISOR_0 0x004
+#define UART_CLOCK_DIVISOR_1 0x005
+#define UART_CLOCK_DIVISOR_2 0x006
+#define UART_TX_CLOCK_MASK_0 0x007
+#define UART_TX_CLOCK_MASK_1 0x008
+#define UART_RX_CLOCK_MASK_0 0x009
+#define UART_RX_CLOCK_MASK_1 0x00a
+
+static int xr21v141x_set_baud_rate(struct xr_usb_serial *xr_usb_serial,
+ unsigned int rate)
+{
+ unsigned int divisor = 48000000 / rate;
+ unsigned int i = ((32 * 48000000) / rate) & 0x1f;
+ unsigned int tx_mask = xr21v141x_baud_rates[i].tx;
+ unsigned int rx_mask =
+ (divisor & 1) ? xr21v141x_baud_rates[i].
+ rx1 : xr21v141x_baud_rates[i].rx0;
+
+ dev_dbg(&xr_usb_serial->control->dev,
+ "Setting baud rate to %d: i=%u div=%u tx=%03x rx=%03x\n", rate,
+ i, divisor, tx_mask, rx_mask);
+
+ xr_usb_serial_set_reg(xr_usb_serial, UART_CLOCK_DIVISOR_0,
+ (divisor >> 0) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_CLOCK_DIVISOR_1,
+ (divisor >> 8) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_CLOCK_DIVISOR_2,
+ (divisor >> 16) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_TX_CLOCK_MASK_0,
+ (tx_mask >> 0) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_TX_CLOCK_MASK_1,
+ (tx_mask >> 8) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_RX_CLOCK_MASK_0,
+ (rx_mask >> 0) & 0xff);
+ xr_usb_serial_set_reg(xr_usb_serial, UART_RX_CLOCK_MASK_1,
+ (rx_mask >> 8) & 0xff);
+
+ return 0;
+}
+
+/* devices aren't required to support these requests.
+ * the cdc xr_usb_serial descriptor tells whether they do...
+ */
+int xr_usb_serial_set_control(struct xr_usb_serial *xr_usb_serial,
+ unsigned int control)
+{
+ int ret = 0;
+
+ if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ if (control & XR_USB_SERIAL_CTRL_DTR)
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_gpio_clr_addr, 0x08);
+ else
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_gpio_set_addr, 0x08);
+
+ if (control & XR_USB_SERIAL_CTRL_RTS)
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_gpio_clr_addr, 0x20);
+ else
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_gpio_set_addr, 0x20);
+ } else {
+ ret =
+ xr_usb_serial_ctrl_msg(xr_usb_serial,
+ USB_CDC_REQ_SET_CONTROL_LINE_STATE,
+ control, NULL, 0);
+ }
+
+ return ret;
+}
+
+int xr_usb_serial_set_line(struct xr_usb_serial *xr_usb_serial,
+ struct usb_cdc_line_coding *line)
+{
+ int ret = 0;
+ unsigned int format_size;
+ unsigned int format_parity;
+ unsigned int format_stop;
+ if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ xr21v141x_set_baud_rate(xr_usb_serial, line->dwDTERate);
+ format_size = line->bDataBits;
+ format_parity = line->bParityType;
+ format_stop = line->bCharFormat;
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_format_addr,
+ (format_size << 0) | (format_parity << 4)
+ | (format_stop << 7));
+
+ } else {
+ ret =
+ xr_usb_serial_ctrl_msg(xr_usb_serial,
+ USB_CDC_REQ_SET_LINE_CODING, 0, line,
+ sizeof *(line));
+ }
+ return ret;
+}
+
+int xr_usb_serial_set_flow_mode(struct xr_usb_serial *xr_usb_serial,
+ struct tty_struct *tty, unsigned int cflag)
+{
+ unsigned int flow;
+ unsigned int gpio_mode;
+
+ if (cflag & CRTSCTS) {
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_set_flow_mode:hardware\n");
+ flow = UART_FLOW_MODE_HW;
+ gpio_mode = UART_GPIO_MODE_SEL_RTS_CTS;
+ } else if (I_IXOFF(tty) || I_IXON(tty)) {
+ unsigned char start_char = START_CHAR(tty);
+ unsigned char stop_char = STOP_CHAR(tty);
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_set_flow_mode:software\n");
+ flow = UART_FLOW_MODE_SW;
+ gpio_mode = UART_GPIO_MODE_SEL_GPIO;
+
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_xon_char_addr,
+ start_char);
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_xoff_char_addr, stop_char);
+ } else {
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_set_flow_mode:none\n");
+ flow = UART_FLOW_MODE_NONE;
+ gpio_mode = UART_GPIO_MODE_SEL_GPIO;
+ }
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_flow_addr, flow);
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_mode_addr,
+ gpio_mode);
+ return 0;
+
+}
+
+int xr_usb_serial_send_break(struct xr_usb_serial *xr_usb_serial, int state)
+{
+ int ret = 0;
+ if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ if (state)
+ ret =
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ tx_break_addr, 0xffff);
+ else
+ ret =
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ tx_break_addr, 0);
+ } else {
+ ret =
+ xr_usb_serial_ctrl_msg(xr_usb_serial,
+ USB_CDC_REQ_SEND_BREAK, state, NULL,
+ 0);
+ }
+ return ret;
+}
+
+#define URM_REG_BLOCK 4
+#define URM_ENABLE_BASE 0x010
+#define URM_ENABLE_0_TX 0x001
+#define URM_ENABLE_0_RX 0x002
+
+int xr_usb_serial_enable(struct xr_usb_serial *xr_usb_serial)
+{
+ int ret = 0;
+ int channel = xr_usb_serial->channel;
+ if ((xr_usb_serial->DeviceProduct == 0x1410) ||
+ (xr_usb_serial->DeviceProduct == 0x1412) ||
+ (xr_usb_serial->DeviceProduct == 0x1414)) {
+ ret =
+ xr_usb_serial_set_reg_ext(xr_usb_serial, URM_REG_BLOCK,
+ URM_ENABLE_BASE + channel,
+ URM_ENABLE_0_TX);
+ ret =
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_enable_addr,
+ UART_ENABLE_TX | UART_ENABLE_RX);
+ ret =
+ xr_usb_serial_set_reg_ext(xr_usb_serial, URM_REG_BLOCK,
+ URM_ENABLE_BASE + channel,
+ URM_ENABLE_0_TX |
+ URM_ENABLE_0_RX);
+ } else {
+ ret =
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.
+ uart_enable_addr,
+ UART_ENABLE_TX | UART_ENABLE_RX);
+ }
+
+ return ret;
+}
+
+int xr_usb_serial_disable(struct xr_usb_serial *xr_usb_serial)
+{
+ int ret = 0;
+ int channel = xr_usb_serial->channel;
+ ret =
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_enable_addr, 0);
+ if ((xr_usb_serial->DeviceProduct == 0x1410)
+ || (xr_usb_serial->DeviceProduct == 0x1412)
+ || (xr_usb_serial->DeviceProduct == 0x1414)) {
+ ret =
+ xr_usb_serial_set_reg_ext(xr_usb_serial, URM_REG_BLOCK,
+ URM_ENABLE_BASE + channel,
+ URM_ENABLE_0_TX);
+ }
+
+ return ret;
+}
+
+int xr_usb_serial_set_loopback(struct xr_usb_serial *xr_usb_serial, int channel)
+{
+ int ret = 0;
+ xr_usb_serial_disable(xr_usb_serial);
+ ret = xr_usb_serial_set_reg_ext(xr_usb_serial, channel,
+ xr_usb_serial->reg_map.
+ uart_loopback_addr, 0x07);
+ xr_usb_serial_enable(xr_usb_serial);
+ return ret;
+}
+
+static int xr_usb_serial_tiocmget(struct xr_usb_serial *xr_usb_serial)
+{
+ short data;
+ int result;
+ result =
+ xr_usb_serial_get_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_status_addr,
+ &data);
+ dev_dbg(&xr_usb_serial->control->dev,
+ "xr_usb_serial_tiocmget uart_gpio_status_addr:0x%04x\n", data);
+ if (result)
+ return ((data & 0x8) ? 0 : TIOCM_DTR) | ((data & 0x20) ? 0 :
+ TIOCM_RTS) | ((data &
+ 0x4) ? 0
+ :
+ TIOCM_DSR)
+ | ((data & 0x1) ? 0 : TIOCM_RI) | ((data & 0x2) ? 0 :
+ TIOCM_CD) | ((data &
+ 0x10) ? 0 :
+ TIOCM_CTS);
+ else
+ return -EFAULT;
+}
+
+static int xr_usb_serial_tiocmset(struct xr_usb_serial *xr_usb_serial,
+ unsigned int set, unsigned int clear)
+{
+ unsigned int newctrl = 0;
+ newctrl = xr_usb_serial->ctrlout;
+
+ set =
+ (set & TIOCM_DTR ? XR_USB_SERIAL_CTRL_DTR : 0) | (set & TIOCM_RTS ?
+ XR_USB_SERIAL_CTRL_RTS
+ : 0);
+
+ clear =
+ (clear & TIOCM_DTR ? XR_USB_SERIAL_CTRL_DTR : 0) | (clear &
+ TIOCM_RTS ?
+ XR_USB_SERIAL_CTRL_RTS
+ : 0);
+
+ newctrl = (newctrl & ~clear) | set;
+
+ if (xr_usb_serial->ctrlout == newctrl)
+ return 0;
+
+ xr_usb_serial->ctrlout = newctrl;
+
+ if (newctrl & XR_USB_SERIAL_CTRL_DTR)
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_clr_addr,
+ 0x08);
+ else
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_set_addr,
+ 0x08);
+
+ if (newctrl & XR_USB_SERIAL_CTRL_RTS)
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_clr_addr,
+ 0x20);
+ else
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_set_addr,
+ 0x20);
+
+ return 0;
+}
+
+static struct reg_addr_map xr21b140x_reg_map;
+static struct reg_addr_map xr21b1411_reg_map;
+static struct reg_addr_map xr21v141x_reg_map;
+static struct reg_addr_map xr21b142x_reg_map;
+
+static void init_xr21b140x_reg_map(void)
+{
+ xr21b140x_reg_map.uart_enable_addr = 0x00;
+ xr21b140x_reg_map.uart_format_addr = 0x05;
+ xr21b140x_reg_map.uart_flow_addr = 0x06;
+ xr21b140x_reg_map.uart_loopback_addr = 0x16;
+ xr21b140x_reg_map.uart_xon_char_addr = 0x07;
+ xr21b140x_reg_map.uart_xoff_char_addr = 0x08;
+ xr21b140x_reg_map.uart_gpio_mode_addr = 0x0c;
+ xr21b140x_reg_map.uart_gpio_dir_addr = 0x0d;
+ xr21b140x_reg_map.uart_gpio_set_addr = 0x0e;
+ xr21b140x_reg_map.uart_gpio_clr_addr = 0x0f;
+ xr21b140x_reg_map.uart_gpio_status_addr = 0x10;
+ xr21b140x_reg_map.tx_break_addr = 0x0a;
+ xr21b140x_reg_map.uart_custom_driver = 0x41;
+}
+
+static void init_xr21b1411_reg_map(void)
+{
+ xr21b1411_reg_map.uart_enable_addr = 0xc00;
+ xr21b1411_reg_map.uart_flow_addr = 0xc06;
+ xr21b1411_reg_map.uart_loopback_addr = 0xc16;
+ xr21b1411_reg_map.uart_xon_char_addr = 0xc07;
+ xr21b1411_reg_map.uart_xoff_char_addr = 0xc08;
+ xr21b1411_reg_map.uart_gpio_mode_addr = 0xc0c;
+ xr21b1411_reg_map.uart_gpio_dir_addr = 0xc0d;
+ xr21b1411_reg_map.uart_gpio_set_addr = 0xc0e;
+ xr21b1411_reg_map.uart_gpio_clr_addr = 0xc0f;
+ xr21b1411_reg_map.uart_gpio_status_addr = 0xc10;
+ xr21b1411_reg_map.tx_break_addr = 0xc0a;
+ xr21b1411_reg_map.uart_custom_driver = 0x20d;
+}
+
+static void init_xr21v141x_reg_map(void)
+{
+ xr21v141x_reg_map.uart_enable_addr = 0x03;
+ xr21v141x_reg_map.uart_format_addr = 0x0b;
+ xr21v141x_reg_map.uart_flow_addr = 0x0c;
+ xr21v141x_reg_map.uart_loopback_addr = 0x12;
+ xr21v141x_reg_map.uart_xon_char_addr = 0x10;
+ xr21v141x_reg_map.uart_xoff_char_addr = 0x11;
+ xr21v141x_reg_map.uart_gpio_mode_addr = 0x1a;
+ xr21v141x_reg_map.uart_gpio_dir_addr = 0x1b;
+ xr21v141x_reg_map.uart_gpio_set_addr = 0x1d;
+ xr21v141x_reg_map.uart_gpio_clr_addr = 0x1e;
+ xr21v141x_reg_map.uart_gpio_status_addr = 0x1f;
+ xr21v141x_reg_map.tx_break_addr = 0x14;
+}
+
+static void init_xr21b142x_reg_map(void)
+{
+ xr21b142x_reg_map.uart_enable_addr = 0x00;
+ xr21b142x_reg_map.uart_flow_addr = 0x06;
+ xr21b142x_reg_map.uart_loopback_addr = 0x16;
+ xr21b142x_reg_map.uart_xon_char_addr = 0x07;
+ xr21b142x_reg_map.uart_xoff_char_addr = 0x08;
+ xr21b142x_reg_map.uart_gpio_mode_addr = 0x0c;
+ xr21b142x_reg_map.uart_gpio_dir_addr = 0x0d;
+ xr21b142x_reg_map.uart_gpio_set_addr = 0x0e;
+ xr21b142x_reg_map.uart_gpio_clr_addr = 0x0f;
+ xr21b142x_reg_map.uart_gpio_status_addr = 0x10;
+ xr21b140x_reg_map.tx_break_addr = 0x0a;
+ xr21b140x_reg_map.uart_custom_driver = 0x60;
+ xr21b140x_reg_map.uart_low_latency = 0x46;
+}
+
+int xr_usb_serial_pre_setup(struct xr_usb_serial *xr_usb_serial)
+{
+ int ret = 0;
+
+ init_xr21b140x_reg_map();
+ init_xr21b1411_reg_map();
+ init_xr21v141x_reg_map();
+ init_xr21b142x_reg_map();
+ if ((xr_usb_serial->DeviceProduct & 0xfff0) == 0x1400) {
+ memcpy(&(xr_usb_serial->reg_map), &xr21b140x_reg_map,
+ sizeof(struct reg_addr_map));
+
+ } else if (xr_usb_serial->DeviceProduct == 0x1411) {
+ memcpy(&(xr_usb_serial->reg_map), &xr21b1411_reg_map,
+ sizeof(struct reg_addr_map));
+ } else if ((xr_usb_serial->DeviceProduct == 0x1410)
+ || (xr_usb_serial->DeviceProduct == 0x1412)
+ || (xr_usb_serial->DeviceProduct == 0x1414)) {
+ memcpy(&(xr_usb_serial->reg_map), &xr21v141x_reg_map,
+ sizeof(struct reg_addr_map));
+ } else if ((xr_usb_serial->DeviceProduct == 0x1420)
+ || (xr_usb_serial->DeviceProduct == 0x1422)
+ || (xr_usb_serial->DeviceProduct == 0x1424)) {
+ memcpy(&(xr_usb_serial->reg_map), &xr21b142x_reg_map,
+ sizeof(struct reg_addr_map));
+ } else {
+ ret = -1;
+ }
+ if (xr_usb_serial->reg_map.uart_custom_driver)
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_custom_driver,
+ 1);
+
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_mode_addr, 0);
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_dir_addr, 0x28);
+ xr_usb_serial_set_reg(xr_usb_serial,
+ xr_usb_serial->reg_map.uart_gpio_set_addr,
+ UART_GPIO_SET_DTR | UART_GPIO_SET_RTS);
+
+ return ret;
+
+}
new file mode 100644
@@ -0,0 +1,31 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/ioctl.h>
+
+#define XR_USB_SERIAL_IOC_MAGIC 'v'
+
+#define XR_USB_SERIAL_GET_REG _IOWR(XR_USB_SERIAL_IOC_MAGIC, 1, int)
+#define XR_USB_SERIAL_SET_REG _IOWR(XR_USB_SERIAL_IOC_MAGIC, 2, int)
+#define XR_USB_SERIAL_SET_ADDRESS_MATCH _IO(XR_USB_SERIAL_IOC_MAGIC, 3)
+#define XR_USB_SERIAL_SET_PRECISE_FLAGS _IO(XR_USB_SERIAL_IOC_MAGIC, 4)
+#define XR_USB_SERIAL_TEST_MODE _IO(XR_USB_SERIAL_IOC_MAGIC, 5)
+#define XR_USB_SERIAL_LOOPBACK _IO(XR_USB_SERIAL_IOC_MAGIC, 6)
+
+#define VZ_ADDRESS_UNICAST_S 0
+#define VZ_ADDRESS_BROADCAST_S 8
+#define VZ_ADDRESS_MATCH(U, B) (0x8000000 | ((B) << VZ_ADDRESS_BROADCAST_S) | ((U) << VZ_ADDRESS_UNICAST_S))
+#define VZ_ADDRESS_MATCH_DISABLE 0
BugLink: https://launchpad.net/bugs/1645591 Import USB UART driver from https://www.exar.com/design-tools/software-drivers Product Family: USB UART Part Numbers: XR21V1410, XR21V1412, XR21V1414, XR21B1411, XR21B1420, XR21B1422, XR21B1424, XR22801, XR22802, XR22804 Operating system: Linux 3.6.x and newer Driver version: 1A Release date: January 2015 Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com> --- ubuntu/Makefile | 4 + ubuntu/xr-usb-serial/Makefile | 15 + ubuntu/xr-usb-serial/README.txt | 50 + ubuntu/xr-usb-serial/xr_usb_serial_common.c | 1834 +++++++++++++++++++++++++++ ubuntu/xr-usb-serial/xr_usb_serial_common.h | 181 +++ ubuntu/xr-usb-serial/xr_usb_serial_hal.c | 766 +++++++++++ ubuntu/xr-usb-serial/xr_usb_serial_ioctl.h | 31 + 7 files changed, 2881 insertions(+) create mode 100644 ubuntu/xr-usb-serial/Makefile create mode 100644 ubuntu/xr-usb-serial/README.txt create mode 100644 ubuntu/xr-usb-serial/xr_usb_serial_common.c create mode 100644 ubuntu/xr-usb-serial/xr_usb_serial_common.h create mode 100644 ubuntu/xr-usb-serial/xr_usb_serial_hal.c create mode 100644 ubuntu/xr-usb-serial/xr_usb_serial_ioctl.h