4 * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
5 * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz>
6 * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com>
7 * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name>
9 * Copyright (c) 2005 David Kubicek <dave@awk.cz>
10 * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com>
12 * USB Abstract Control Model driver for USB modems and ISDN adapters
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 #include <linux/kernel.h>
35 #include <linux/errno.h>
36 #include <linux/init.h>
37 #include <linux/slab.h>
38 #include <linux/tty.h>
39 #include <linux/serial.h>
40 #include <linux/tty_driver.h>
41 #include <linux/tty_flip.h>
42 #include <linux/module.h>
43 #include <linux/mutex.h>
44 #include <linux/uaccess.h>
45 #include <linux/usb.h>
46 #include <linux/usb/cdc.h>
47 #include <asm/byteorder.h>
48 #include <asm/unaligned.h>
49 #include <linux/list.h>
54 #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
55 #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
57 static struct usb_driver acm_driver;
58 static struct tty_driver *acm_tty_driver;
59 static struct acm *acm_table[ACM_TTY_MINORS];
61 static DEFINE_MUTEX(acm_table_lock);
68 * Look up an ACM structure by index. If found and not disconnected, increment
69 * its refcount and return it with its mutex held.
71 static struct acm *acm_get_by_index(unsigned index)
75 mutex_lock(&acm_table_lock);
76 acm = acm_table[index];
78 mutex_lock(&acm->mutex);
79 if (acm->disconnected) {
80 mutex_unlock(&acm->mutex);
83 tty_port_get(&acm->port);
84 mutex_unlock(&acm->mutex);
87 mutex_unlock(&acm_table_lock);
92 * Try to find an available minor number and if found, associate it with 'acm'.
94 static int acm_alloc_minor(struct acm *acm)
98 mutex_lock(&acm_table_lock);
99 for (minor = 0; minor < ACM_TTY_MINORS; minor++) {
100 if (!acm_table[minor]) {
101 acm_table[minor] = acm;
105 mutex_unlock(&acm_table_lock);
110 /* Release the minor number associated with 'acm'. */
111 static void acm_release_minor(struct acm *acm)
113 mutex_lock(&acm_table_lock);
114 acm_table[acm->minor] = NULL;
115 mutex_unlock(&acm_table_lock);
119 * Functions for ACM control messages.
122 static int acm_ctrl_msg(struct acm *acm, int request, int value,
127 retval = usb_autopm_get_interface(acm->control);
131 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
132 request, USB_RT_ACM, value,
133 acm->control->altsetting[0].desc.bInterfaceNumber,
136 dev_dbg(&acm->control->dev,
137 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
138 __func__, request, value, len, retval);
140 usb_autopm_put_interface(acm->control);
142 return retval < 0 ? retval : 0;
145 /* devices aren't required to support these requests.
146 * the cdc acm descriptor tells whether they do...
148 #define acm_set_control(acm, control) \
149 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
150 #define acm_set_line(acm, line) \
151 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
152 #define acm_send_break(acm, ms) \
153 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
156 * Write buffer management.
157 * All of these assume proper locks taken by the caller.
160 static int acm_wb_alloc(struct acm *acm)
173 wbn = (wbn + 1) % ACM_NW;
179 static int acm_wb_is_avail(struct acm *acm)
185 spin_lock_irqsave(&acm->write_lock, flags);
186 for (i = 0; i < ACM_NW; i++)
188 spin_unlock_irqrestore(&acm->write_lock, flags);
193 * Finish write. Caller must hold acm->write_lock
195 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
199 usb_autopm_put_interface_async(acm->control);
205 * the caller is responsible for locking
208 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
214 wb->urb->transfer_buffer = wb->buf;
215 wb->urb->transfer_dma = wb->dmah;
216 wb->urb->transfer_buffer_length = wb->len;
217 wb->urb->dev = acm->dev;
219 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
221 dev_err(&acm->data->dev,
222 "%s - usb_submit_urb(write bulk) failed: %d\n",
224 acm_write_done(acm, wb);
230 * attributes exported through sysfs
232 static ssize_t show_caps
233 (struct device *dev, struct device_attribute *attr, char *buf)
235 struct usb_interface *intf = to_usb_interface(dev);
236 struct acm *acm = usb_get_intfdata(intf);
238 return sprintf(buf, "%d", acm->ctrl_caps);
240 static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
242 static ssize_t show_country_codes
243 (struct device *dev, struct device_attribute *attr, char *buf)
245 struct usb_interface *intf = to_usb_interface(dev);
246 struct acm *acm = usb_get_intfdata(intf);
248 memcpy(buf, acm->country_codes, acm->country_code_size);
249 return acm->country_code_size;
252 static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
254 static ssize_t show_country_rel_date
255 (struct device *dev, struct device_attribute *attr, char *buf)
257 struct usb_interface *intf = to_usb_interface(dev);
258 struct acm *acm = usb_get_intfdata(intf);
260 return sprintf(buf, "%d", acm->country_rel_date);
263 static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
265 * Interrupt handlers for various ACM device responses
268 /* control interface reports status changes with "interrupt" transfers */
269 static void acm_ctrl_irq(struct urb *urb)
271 struct acm *acm = urb->context;
272 struct usb_cdc_notification *dr = urb->transfer_buffer;
277 int status = urb->status;
286 /* this urb is terminated, clean up */
287 dev_dbg(&acm->control->dev,
288 "%s - urb shutting down with status: %d\n",
292 dev_dbg(&acm->control->dev,
293 "%s - nonzero urb status received: %d\n",
298 usb_mark_last_busy(acm->dev);
300 data = (unsigned char *)(dr + 1);
301 switch (dr->bNotificationType) {
302 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
303 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
304 __func__, dr->wValue);
307 case USB_CDC_NOTIFY_SERIAL_STATE:
308 newctrl = get_unaligned_le16(data);
310 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
311 dev_dbg(&acm->control->dev, "%s - calling hangup\n",
313 tty_port_tty_hangup(&acm->port, false);
316 difference = acm->ctrlin ^ newctrl;
317 spin_lock(&acm->read_lock);
318 acm->ctrlin = newctrl;
319 acm->oldcount = acm->iocount;
321 if (difference & ACM_CTRL_DSR)
323 if (difference & ACM_CTRL_BRK)
325 if (difference & ACM_CTRL_RI)
327 if (difference & ACM_CTRL_DCD)
329 if (difference & ACM_CTRL_FRAMING)
330 acm->iocount.frame++;
331 if (difference & ACM_CTRL_PARITY)
332 acm->iocount.parity++;
333 if (difference & ACM_CTRL_OVERRUN)
334 acm->iocount.overrun++;
335 spin_unlock(&acm->read_lock);
338 wake_up_all(&acm->wioctl);
343 dev_dbg(&acm->control->dev,
344 "%s - unknown notification %d received: index %d "
345 "len %d data0 %d data1 %d\n",
347 dr->bNotificationType, dr->wIndex,
348 dr->wLength, data[0], data[1]);
352 retval = usb_submit_urb(urb, GFP_ATOMIC);
354 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
358 static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
362 if (!test_and_clear_bit(index, &acm->read_urbs_free))
365 dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
367 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
370 dev_err(&acm->data->dev,
371 "%s - usb_submit_urb failed: %d\n",
374 set_bit(index, &acm->read_urbs_free);
381 static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
386 for (i = 0; i < acm->rx_buflimit; ++i) {
387 res = acm_submit_read_urb(acm, i, mem_flags);
395 static void acm_process_read_urb(struct acm *acm, struct urb *urb)
397 if (!urb->actual_length)
400 tty_insert_flip_string(&acm->port, urb->transfer_buffer,
402 tty_flip_buffer_push(&acm->port);
405 static void acm_read_bulk_callback(struct urb *urb)
407 struct acm_rb *rb = urb->context;
408 struct acm *acm = rb->instance;
411 dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
412 rb->index, urb->actual_length);
413 set_bit(rb->index, &acm->read_urbs_free);
416 dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
419 usb_mark_last_busy(acm->dev);
422 dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
423 __func__, urb->status);
426 acm_process_read_urb(acm, urb);
428 /* throttle device if requested by tty */
429 spin_lock_irqsave(&acm->read_lock, flags);
430 acm->throttled = acm->throttle_req;
431 if (!acm->throttled && !acm->susp_count) {
432 spin_unlock_irqrestore(&acm->read_lock, flags);
433 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
435 spin_unlock_irqrestore(&acm->read_lock, flags);
439 /* data interface wrote those outgoing bytes */
440 static void acm_write_bulk(struct urb *urb)
442 struct acm_wb *wb = urb->context;
443 struct acm *acm = wb->instance;
446 if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
447 dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
450 urb->transfer_buffer_length,
453 spin_lock_irqsave(&acm->write_lock, flags);
454 acm_write_done(acm, wb);
455 spin_unlock_irqrestore(&acm->write_lock, flags);
456 schedule_work(&acm->work);
459 static void acm_softint(struct work_struct *work)
461 struct acm *acm = container_of(work, struct acm, work);
463 dev_vdbg(&acm->data->dev, "%s\n", __func__);
465 tty_port_tty_wakeup(&acm->port);
472 static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
477 dev_dbg(tty->dev, "%s\n", __func__);
479 acm = acm_get_by_index(tty->index);
483 retval = tty_standard_install(driver, tty);
485 goto error_init_termios;
487 tty->driver_data = acm;
492 tty_port_put(&acm->port);
496 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
498 struct acm *acm = tty->driver_data;
500 dev_dbg(tty->dev, "%s\n", __func__);
502 return tty_port_open(&acm->port, tty, filp);
505 static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
507 struct acm *acm = container_of(port, struct acm, port);
508 int retval = -ENODEV;
511 dev_dbg(&acm->control->dev, "%s\n", __func__);
513 mutex_lock(&acm->mutex);
514 if (acm->disconnected)
517 retval = usb_autopm_get_interface(acm->control);
519 goto error_get_interface;
522 * FIXME: Why do we need this? Allocating 64K of physically contiguous
523 * memory is really nasty...
525 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
526 acm->control->needs_remote_wakeup = 1;
528 acm->ctrlurb->dev = acm->dev;
529 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
530 dev_err(&acm->control->dev,
531 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
532 goto error_submit_urb;
535 acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
536 if (acm_set_control(acm, acm->ctrlout) < 0 &&
537 (acm->ctrl_caps & USB_CDC_CAP_LINE))
538 goto error_set_control;
540 usb_autopm_put_interface(acm->control);
543 * Unthrottle device in case the TTY was closed while throttled.
545 spin_lock_irq(&acm->read_lock);
547 acm->throttle_req = 0;
548 spin_unlock_irq(&acm->read_lock);
550 if (acm_submit_read_urbs(acm, GFP_KERNEL))
551 goto error_submit_read_urbs;
553 mutex_unlock(&acm->mutex);
557 error_submit_read_urbs:
558 for (i = 0; i < acm->rx_buflimit; i++)
559 usb_kill_urb(acm->read_urbs[i]);
561 acm_set_control(acm, acm->ctrlout);
563 usb_kill_urb(acm->ctrlurb);
565 usb_autopm_put_interface(acm->control);
568 mutex_unlock(&acm->mutex);
572 static void acm_port_destruct(struct tty_port *port)
574 struct acm *acm = container_of(port, struct acm, port);
576 dev_dbg(&acm->control->dev, "%s\n", __func__);
578 acm_release_minor(acm);
579 usb_put_intf(acm->control);
580 kfree(acm->country_codes);
584 static void acm_port_shutdown(struct tty_port *port)
586 struct acm *acm = container_of(port, struct acm, port);
591 dev_dbg(&acm->control->dev, "%s\n", __func__);
593 mutex_lock(&acm->mutex);
594 if (!acm->disconnected) {
595 usb_autopm_get_interface(acm->control);
596 acm_set_control(acm, acm->ctrlout = 0);
599 urb = usb_get_from_anchor(&acm->delayed);
604 usb_autopm_put_interface_async(acm->control);
607 usb_kill_urb(acm->ctrlurb);
608 for (i = 0; i < ACM_NW; i++)
609 usb_kill_urb(acm->wb[i].urb);
610 for (i = 0; i < acm->rx_buflimit; i++)
611 usb_kill_urb(acm->read_urbs[i]);
612 acm->control->needs_remote_wakeup = 0;
613 usb_autopm_put_interface(acm->control);
615 mutex_unlock(&acm->mutex);
618 static void acm_tty_cleanup(struct tty_struct *tty)
620 struct acm *acm = tty->driver_data;
621 dev_dbg(&acm->control->dev, "%s\n", __func__);
622 tty_port_put(&acm->port);
625 static void acm_tty_hangup(struct tty_struct *tty)
627 struct acm *acm = tty->driver_data;
628 dev_dbg(&acm->control->dev, "%s\n", __func__);
629 tty_port_hangup(&acm->port);
632 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
634 struct acm *acm = tty->driver_data;
635 dev_dbg(&acm->control->dev, "%s\n", __func__);
636 tty_port_close(&acm->port, tty, filp);
639 static int acm_tty_write(struct tty_struct *tty,
640 const unsigned char *buf, int count)
642 struct acm *acm = tty->driver_data;
651 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
653 spin_lock_irqsave(&acm->write_lock, flags);
654 wbn = acm_wb_alloc(acm);
656 spin_unlock_irqrestore(&acm->write_lock, flags);
663 spin_unlock_irqrestore(&acm->write_lock, flags);
667 count = (count > acm->writesize) ? acm->writesize : count;
668 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
669 memcpy(wb->buf, buf, count);
672 stat = usb_autopm_get_interface_async(acm->control);
675 spin_unlock_irqrestore(&acm->write_lock, flags);
679 if (acm->susp_count) {
680 usb_anchor_urb(wb->urb, &acm->delayed);
681 spin_unlock_irqrestore(&acm->write_lock, flags);
684 usb_mark_last_busy(acm->dev);
686 stat = acm_start_wb(acm, wb);
687 spin_unlock_irqrestore(&acm->write_lock, flags);
694 static int acm_tty_write_room(struct tty_struct *tty)
696 struct acm *acm = tty->driver_data;
698 * Do not let the line discipline to know that we have a reserve,
699 * or it might get too enthusiastic.
701 return acm_wb_is_avail(acm) ? acm->writesize : 0;
704 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
706 struct acm *acm = tty->driver_data;
708 * if the device was unplugged then any remaining characters fell out
709 * of the connector ;)
711 if (acm->disconnected)
714 * This is inaccurate (overcounts), but it works.
716 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
719 static void acm_tty_throttle(struct tty_struct *tty)
721 struct acm *acm = tty->driver_data;
723 spin_lock_irq(&acm->read_lock);
724 acm->throttle_req = 1;
725 spin_unlock_irq(&acm->read_lock);
728 static void acm_tty_unthrottle(struct tty_struct *tty)
730 struct acm *acm = tty->driver_data;
731 unsigned int was_throttled;
733 spin_lock_irq(&acm->read_lock);
734 was_throttled = acm->throttled;
736 acm->throttle_req = 0;
737 spin_unlock_irq(&acm->read_lock);
740 acm_submit_read_urbs(acm, GFP_KERNEL);
743 static int acm_tty_break_ctl(struct tty_struct *tty, int state)
745 struct acm *acm = tty->driver_data;
748 retval = acm_send_break(acm, state ? 0xffff : 0);
750 dev_dbg(&acm->control->dev, "%s - send break failed\n",
755 static int acm_tty_tiocmget(struct tty_struct *tty)
757 struct acm *acm = tty->driver_data;
759 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
760 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
761 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
762 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
763 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
767 static int acm_tty_tiocmset(struct tty_struct *tty,
768 unsigned int set, unsigned int clear)
770 struct acm *acm = tty->driver_data;
771 unsigned int newctrl;
773 newctrl = acm->ctrlout;
774 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
775 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
776 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
777 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
779 newctrl = (newctrl & ~clear) | set;
781 if (acm->ctrlout == newctrl)
783 return acm_set_control(acm, acm->ctrlout = newctrl);
786 static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
788 struct serial_struct tmp;
793 memset(&tmp, 0, sizeof(tmp));
794 tmp.flags = ASYNC_LOW_LATENCY;
795 tmp.xmit_fifo_size = acm->writesize;
796 tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
797 tmp.close_delay = acm->port.close_delay / 10;
798 tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
799 ASYNC_CLOSING_WAIT_NONE :
800 acm->port.closing_wait / 10;
802 if (copy_to_user(info, &tmp, sizeof(tmp)))
808 static int set_serial_info(struct acm *acm,
809 struct serial_struct __user *newinfo)
811 struct serial_struct new_serial;
812 unsigned int closing_wait, close_delay;
815 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
818 close_delay = new_serial.close_delay * 10;
819 closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
820 ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
822 mutex_lock(&acm->port.mutex);
824 if (!capable(CAP_SYS_ADMIN)) {
825 if ((close_delay != acm->port.close_delay) ||
826 (closing_wait != acm->port.closing_wait))
829 retval = -EOPNOTSUPP;
831 acm->port.close_delay = close_delay;
832 acm->port.closing_wait = closing_wait;
835 mutex_unlock(&acm->port.mutex);
839 static int wait_serial_change(struct acm *acm, unsigned long arg)
842 DECLARE_WAITQUEUE(wait, current);
843 struct async_icount old, new;
845 if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD ))
848 spin_lock_irq(&acm->read_lock);
852 spin_unlock_irq(&acm->read_lock);
854 if ((arg & TIOCM_DSR) &&
857 if ((arg & TIOCM_CD) &&
860 if ((arg & TIOCM_RI) &&
864 add_wait_queue(&acm->wioctl, &wait);
865 set_current_state(TASK_INTERRUPTIBLE);
867 remove_wait_queue(&acm->wioctl, &wait);
868 if (acm->disconnected) {
874 if (signal_pending(current))
884 static int get_serial_usage(struct acm *acm,
885 struct serial_icounter_struct __user *count)
887 struct serial_icounter_struct icount;
890 memset(&icount, 0, sizeof(icount));
891 icount.dsr = acm->iocount.dsr;
892 icount.rng = acm->iocount.rng;
893 icount.dcd = acm->iocount.dcd;
894 icount.frame = acm->iocount.frame;
895 icount.overrun = acm->iocount.overrun;
896 icount.parity = acm->iocount.parity;
897 icount.brk = acm->iocount.brk;
899 if (copy_to_user(count, &icount, sizeof(icount)) > 0)
905 static int acm_tty_ioctl(struct tty_struct *tty,
906 unsigned int cmd, unsigned long arg)
908 struct acm *acm = tty->driver_data;
909 int rv = -ENOIOCTLCMD;
912 case TIOCGSERIAL: /* gets serial port data */
913 rv = get_serial_info(acm, (struct serial_struct __user *) arg);
916 rv = set_serial_info(acm, (struct serial_struct __user *) arg);
919 rv = usb_autopm_get_interface(acm->control);
924 rv = wait_serial_change(acm, arg);
925 usb_autopm_put_interface(acm->control);
928 rv = get_serial_usage(acm, (struct serial_icounter_struct __user *) arg);
935 static void acm_tty_set_termios(struct tty_struct *tty,
936 struct ktermios *termios_old)
938 struct acm *acm = tty->driver_data;
939 struct ktermios *termios = &tty->termios;
940 struct usb_cdc_line_coding newline;
941 int newctrl = acm->ctrlout;
943 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
944 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
945 newline.bParityType = termios->c_cflag & PARENB ?
946 (termios->c_cflag & PARODD ? 1 : 2) +
947 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
948 switch (termios->c_cflag & CSIZE) {
950 newline.bDataBits = 5;
953 newline.bDataBits = 6;
956 newline.bDataBits = 7;
960 newline.bDataBits = 8;
963 /* FIXME: Needs to clear unsupported bits in the termios */
964 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
966 if (!newline.dwDTERate) {
967 newline.dwDTERate = acm->line.dwDTERate;
968 newctrl &= ~ACM_CTRL_DTR;
970 newctrl |= ACM_CTRL_DTR;
972 if (newctrl != acm->ctrlout)
973 acm_set_control(acm, acm->ctrlout = newctrl);
975 if (memcmp(&acm->line, &newline, sizeof newline)) {
976 memcpy(&acm->line, &newline, sizeof newline);
977 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
979 le32_to_cpu(newline.dwDTERate),
980 newline.bCharFormat, newline.bParityType,
982 acm_set_line(acm, &acm->line);
986 static const struct tty_port_operations acm_port_ops = {
987 .shutdown = acm_port_shutdown,
988 .activate = acm_port_activate,
989 .destruct = acm_port_destruct,
993 * USB probe and disconnect routines.
996 /* Little helpers: write/read buffers free */
997 static void acm_write_buffers_free(struct acm *acm)
1001 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
1003 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
1004 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
1007 static void acm_read_buffers_free(struct acm *acm)
1009 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
1012 for (i = 0; i < acm->rx_buflimit; i++)
1013 usb_free_coherent(usb_dev, acm->readsize,
1014 acm->read_buffers[i].base, acm->read_buffers[i].dma);
1017 /* Little helper: write buffers allocate */
1018 static int acm_write_buffers_alloc(struct acm *acm)
1023 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
1024 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
1030 usb_free_coherent(acm->dev, acm->writesize,
1039 static int acm_probe(struct usb_interface *intf,
1040 const struct usb_device_id *id)
1042 struct usb_cdc_union_desc *union_header = NULL;
1043 struct usb_cdc_country_functional_desc *cfd = NULL;
1044 unsigned char *buffer = intf->altsetting->extra;
1045 int buflen = intf->altsetting->extralen;
1046 struct usb_interface *control_interface;
1047 struct usb_interface *data_interface;
1048 struct usb_endpoint_descriptor *epctrl = NULL;
1049 struct usb_endpoint_descriptor *epread = NULL;
1050 struct usb_endpoint_descriptor *epwrite = NULL;
1051 struct usb_device *usb_dev = interface_to_usbdev(intf);
1054 int ctrlsize, readsize;
1056 u8 ac_management_function = 0;
1057 u8 call_management_function = 0;
1058 int call_interface_num = -1;
1059 int data_interface_num = -1;
1060 unsigned long quirks;
1063 int combined_interfaces = 0;
1064 struct device *tty_dev;
1068 quirks = (unsigned long)id->driver_info;
1070 if (quirks == IGNORE_DEVICE)
1073 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
1075 /* handle quirks deadly to normal probing*/
1076 if (quirks == NO_UNION_NORMAL) {
1077 data_interface = usb_ifnum_to_if(usb_dev, 1);
1078 control_interface = usb_ifnum_to_if(usb_dev, 0);
1079 goto skip_normal_probe;
1084 dev_err(&intf->dev, "Weird descriptor references\n");
1089 if (intf->cur_altsetting->endpoint &&
1090 intf->cur_altsetting->endpoint->extralen &&
1091 intf->cur_altsetting->endpoint->extra) {
1093 "Seeking extra descriptors on endpoint\n");
1094 buflen = intf->cur_altsetting->endpoint->extralen;
1095 buffer = intf->cur_altsetting->endpoint->extra;
1098 "Zero length descriptor references\n");
1103 while (buflen > 0) {
1104 if (buffer[1] != USB_DT_CS_INTERFACE) {
1105 dev_err(&intf->dev, "skipping garbage\n");
1109 switch (buffer[2]) {
1110 case USB_CDC_UNION_TYPE: /* we've found it */
1112 dev_err(&intf->dev, "More than one "
1113 "union descriptor, skipping ...\n");
1116 union_header = (struct usb_cdc_union_desc *)buffer;
1118 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
1119 cfd = (struct usb_cdc_country_functional_desc *)buffer;
1121 case USB_CDC_HEADER_TYPE: /* maybe check version */
1122 break; /* for now we ignore it */
1123 case USB_CDC_ACM_TYPE:
1124 ac_management_function = buffer[3];
1126 case USB_CDC_CALL_MANAGEMENT_TYPE:
1127 call_management_function = buffer[3];
1128 call_interface_num = buffer[4];
1129 if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
1130 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1133 /* there are LOTS more CDC descriptors that
1134 * could legitimately be found here.
1136 dev_dbg(&intf->dev, "Ignoring descriptor: "
1137 "type %02x, length %d\n",
1138 buffer[2], buffer[0]);
1142 buflen -= buffer[0];
1143 buffer += buffer[0];
1146 if (!union_header) {
1147 if (call_interface_num > 0) {
1148 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
1149 /* quirks for Droids MuIn LCD */
1150 if (quirks & NO_DATA_INTERFACE)
1151 data_interface = usb_ifnum_to_if(usb_dev, 0);
1153 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1154 control_interface = intf;
1156 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1157 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1160 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1161 combined_interfaces = 1;
1162 control_interface = data_interface = intf;
1163 goto look_for_collapsed_interface;
1167 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1168 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1169 if (!control_interface || !data_interface) {
1170 dev_dbg(&intf->dev, "no interfaces\n");
1175 if (data_interface_num != call_interface_num)
1176 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1178 if (control_interface == data_interface) {
1179 /* some broken devices designed for windows work this way */
1180 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1181 combined_interfaces = 1;
1182 /* a popular other OS doesn't use it */
1183 quirks |= NO_CAP_LINE;
1184 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1185 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1188 look_for_collapsed_interface:
1189 for (i = 0; i < 3; i++) {
1190 struct usb_endpoint_descriptor *ep;
1191 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1193 if (usb_endpoint_is_int_in(ep))
1195 else if (usb_endpoint_is_bulk_out(ep))
1197 else if (usb_endpoint_is_bulk_in(ep))
1202 if (!epctrl || !epread || !epwrite)
1205 goto made_compressed_probe;
1210 /*workaround for switched interfaces */
1211 if (data_interface->cur_altsetting->desc.bInterfaceClass
1212 != CDC_DATA_INTERFACE_TYPE) {
1213 if (control_interface->cur_altsetting->desc.bInterfaceClass
1214 == CDC_DATA_INTERFACE_TYPE) {
1215 struct usb_interface *t;
1217 "Your device has switched interfaces.\n");
1218 t = control_interface;
1219 control_interface = data_interface;
1226 /* Accept probe requests only for the control interface */
1227 if (!combined_interfaces && intf != control_interface)
1230 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1231 /* valid in this context */
1232 dev_dbg(&intf->dev, "The data interface isn't available\n");
1237 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1238 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
1241 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1242 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1243 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1246 /* workaround for switched endpoints */
1247 if (!usb_endpoint_dir_in(epread)) {
1248 /* descriptors are swapped */
1249 struct usb_endpoint_descriptor *t;
1251 "The data interface has switched endpoints\n");
1256 made_compressed_probe:
1257 dev_dbg(&intf->dev, "interfaces are valid\n");
1259 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1261 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1265 minor = acm_alloc_minor(acm);
1266 if (minor == ACM_TTY_MINORS) {
1267 dev_err(&intf->dev, "no more free acm devices\n");
1272 ctrlsize = usb_endpoint_maxp(epctrl);
1273 readsize = usb_endpoint_maxp(epread) *
1274 (quirks == SINGLE_RX_URB ? 1 : 2);
1275 acm->combined_interfaces = combined_interfaces;
1276 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1277 acm->control = control_interface;
1278 acm->data = data_interface;
1281 acm->ctrl_caps = ac_management_function;
1282 if (quirks & NO_CAP_LINE)
1283 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1284 acm->ctrlsize = ctrlsize;
1285 acm->readsize = readsize;
1286 acm->rx_buflimit = num_rx_buf;
1287 INIT_WORK(&acm->work, acm_softint);
1288 init_waitqueue_head(&acm->wioctl);
1289 spin_lock_init(&acm->write_lock);
1290 spin_lock_init(&acm->read_lock);
1291 mutex_init(&acm->mutex);
1292 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1293 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1295 acm->bInterval = epread->bInterval;
1296 tty_port_init(&acm->port);
1297 acm->port.ops = &acm_port_ops;
1298 init_usb_anchor(&acm->delayed);
1300 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1302 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1305 acm->ctrl_buffer = buf;
1307 if (acm_write_buffers_alloc(acm) < 0) {
1308 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1312 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1313 if (!acm->ctrlurb) {
1314 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1317 for (i = 0; i < num_rx_buf; i++) {
1318 struct acm_rb *rb = &(acm->read_buffers[i]);
1321 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1324 dev_err(&intf->dev, "out of memory "
1325 "(read bufs usb_alloc_coherent)\n");
1331 urb = usb_alloc_urb(0, GFP_KERNEL);
1334 "out of memory (read urbs usb_alloc_urb)\n");
1337 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1338 urb->transfer_dma = rb->dma;
1339 if (acm->is_int_ep) {
1340 usb_fill_int_urb(urb, acm->dev,
1344 acm_read_bulk_callback, rb,
1347 usb_fill_bulk_urb(urb, acm->dev,
1351 acm_read_bulk_callback, rb);
1354 acm->read_urbs[i] = urb;
1355 __set_bit(i, &acm->read_urbs_free);
1357 for (i = 0; i < ACM_NW; i++) {
1358 struct acm_wb *snd = &(acm->wb[i]);
1360 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1361 if (snd->urb == NULL) {
1363 "out of memory (write urbs usb_alloc_urb)\n");
1367 if (usb_endpoint_xfer_int(epwrite))
1368 usb_fill_int_urb(snd->urb, usb_dev,
1369 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
1370 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1372 usb_fill_bulk_urb(snd->urb, usb_dev,
1373 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1374 NULL, acm->writesize, acm_write_bulk, snd);
1375 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1376 snd->instance = acm;
1379 usb_set_intfdata(intf, acm);
1381 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1385 if (cfd) { /* export the country data */
1386 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1387 if (!acm->country_codes)
1388 goto skip_countries;
1389 acm->country_code_size = cfd->bLength - 4;
1390 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1392 acm->country_rel_date = cfd->iCountryCodeRelDate;
1394 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1396 kfree(acm->country_codes);
1397 acm->country_codes = NULL;
1398 acm->country_code_size = 0;
1399 goto skip_countries;
1402 i = device_create_file(&intf->dev,
1403 &dev_attr_iCountryCodeRelDate);
1405 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1406 kfree(acm->country_codes);
1407 acm->country_codes = NULL;
1408 acm->country_code_size = 0;
1409 goto skip_countries;
1414 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1415 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1416 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1417 /* works around buggy devices */
1418 epctrl->bInterval ? epctrl->bInterval : 16);
1419 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1420 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1422 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1424 acm_set_control(acm, acm->ctrlout);
1426 acm->line.dwDTERate = cpu_to_le32(9600);
1427 acm->line.bDataBits = 8;
1428 acm_set_line(acm, &acm->line);
1430 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1431 usb_set_intfdata(data_interface, acm);
1433 usb_get_intf(control_interface);
1434 tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
1435 &control_interface->dev);
1436 if (IS_ERR(tty_dev)) {
1437 rv = PTR_ERR(tty_dev);
1443 if (acm->country_codes) {
1444 device_remove_file(&acm->control->dev,
1445 &dev_attr_wCountryCodes);
1446 device_remove_file(&acm->control->dev,
1447 &dev_attr_iCountryCodeRelDate);
1449 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1451 usb_set_intfdata(intf, NULL);
1452 for (i = 0; i < ACM_NW; i++)
1453 usb_free_urb(acm->wb[i].urb);
1455 for (i = 0; i < num_rx_buf; i++)
1456 usb_free_urb(acm->read_urbs[i]);
1457 acm_read_buffers_free(acm);
1458 usb_free_urb(acm->ctrlurb);
1460 acm_write_buffers_free(acm);
1462 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1464 acm_release_minor(acm);
1470 static void stop_data_traffic(struct acm *acm)
1474 dev_dbg(&acm->control->dev, "%s\n", __func__);
1476 usb_kill_urb(acm->ctrlurb);
1477 for (i = 0; i < ACM_NW; i++)
1478 usb_kill_urb(acm->wb[i].urb);
1479 for (i = 0; i < acm->rx_buflimit; i++)
1480 usb_kill_urb(acm->read_urbs[i]);
1482 cancel_work_sync(&acm->work);
1485 static void acm_disconnect(struct usb_interface *intf)
1487 struct acm *acm = usb_get_intfdata(intf);
1488 struct usb_device *usb_dev = interface_to_usbdev(intf);
1489 struct tty_struct *tty;
1492 dev_dbg(&intf->dev, "%s\n", __func__);
1494 /* sibling interface is already cleaning up */
1498 mutex_lock(&acm->mutex);
1499 acm->disconnected = true;
1500 if (acm->country_codes) {
1501 device_remove_file(&acm->control->dev,
1502 &dev_attr_wCountryCodes);
1503 device_remove_file(&acm->control->dev,
1504 &dev_attr_iCountryCodeRelDate);
1506 wake_up_all(&acm->wioctl);
1507 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1508 usb_set_intfdata(acm->control, NULL);
1509 usb_set_intfdata(acm->data, NULL);
1510 mutex_unlock(&acm->mutex);
1512 tty = tty_port_tty_get(&acm->port);
1518 stop_data_traffic(acm);
1520 tty_unregister_device(acm_tty_driver, acm->minor);
1522 usb_free_urb(acm->ctrlurb);
1523 for (i = 0; i < ACM_NW; i++)
1524 usb_free_urb(acm->wb[i].urb);
1525 for (i = 0; i < acm->rx_buflimit; i++)
1526 usb_free_urb(acm->read_urbs[i]);
1527 acm_write_buffers_free(acm);
1528 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1529 acm_read_buffers_free(acm);
1531 if (!acm->combined_interfaces)
1532 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1533 acm->data : acm->control);
1535 tty_port_put(&acm->port);
1539 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1541 struct acm *acm = usb_get_intfdata(intf);
1544 spin_lock_irq(&acm->read_lock);
1545 spin_lock(&acm->write_lock);
1546 if (PMSG_IS_AUTO(message)) {
1547 if (acm->transmitting) {
1548 spin_unlock(&acm->write_lock);
1549 spin_unlock_irq(&acm->read_lock);
1553 cnt = acm->susp_count++;
1554 spin_unlock(&acm->write_lock);
1555 spin_unlock_irq(&acm->read_lock);
1560 stop_data_traffic(acm);
1565 static int acm_resume(struct usb_interface *intf)
1567 struct acm *acm = usb_get_intfdata(intf);
1571 spin_lock_irq(&acm->read_lock);
1572 spin_lock(&acm->write_lock);
1574 if (--acm->susp_count)
1577 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1578 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
1581 urb = usb_get_from_anchor(&acm->delayed);
1585 acm_start_wb(acm, urb->context);
1589 * delayed error checking because we must
1590 * do the write path at all cost
1595 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
1598 spin_unlock(&acm->write_lock);
1599 spin_unlock_irq(&acm->read_lock);
1604 static int acm_reset_resume(struct usb_interface *intf)
1606 struct acm *acm = usb_get_intfdata(intf);
1608 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
1609 tty_port_tty_hangup(&acm->port, false);
1611 return acm_resume(intf);
1614 #endif /* CONFIG_PM */
1616 #define NOKIA_PCSUITE_ACM_INFO(x) \
1617 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1618 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1619 USB_CDC_ACM_PROTO_VENDOR)
1621 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1622 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1623 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1624 USB_CDC_ACM_PROTO_VENDOR)
1627 * USB driver structure.
1630 static const struct usb_device_id acm_ids[] = {
1631 /* quirky and broken devices */
1632 { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
1633 .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
1634 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1635 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1637 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1638 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1640 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1641 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1643 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1644 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1646 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1647 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1649 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1650 .driver_info = SINGLE_RX_URB,
1652 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1653 .driver_info = SINGLE_RX_URB, /* firmware bug */
1655 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1656 .driver_info = SINGLE_RX_URB, /* firmware bug */
1658 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1659 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1661 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1662 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1664 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1665 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1667 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1668 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1670 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1671 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1673 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1675 /* Motorola H24 HSPA module: */
1676 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
1677 { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
1678 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1680 { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
1681 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1683 { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
1684 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1686 { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
1687 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1689 { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
1690 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1692 { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
1693 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1695 { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
1696 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1699 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1700 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1701 data interface instead of
1702 communications interface.
1703 Maybe we should define a new
1706 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1707 .driver_info = NO_UNION_NORMAL,
1709 { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
1710 .driver_info = NO_UNION_NORMAL,
1712 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1713 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1715 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1716 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1719 /* Nokia S60 phones expose two ACM channels. The first is
1720 * a modem and is picked up by the standard AT-command
1721 * information below. The second is 'vendor-specific' but
1722 * is treated as a serial device at the S60 end, so we want
1723 * to expose it on Linux too. */
1724 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1725 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1726 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1727 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1728 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1729 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1730 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1731 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1732 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1733 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1734 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1735 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1736 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1737 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1738 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1739 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1740 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1741 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1742 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1743 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1744 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1745 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1746 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1747 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1748 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1749 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1750 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1751 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1752 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1753 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1754 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1755 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1756 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1757 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1758 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1759 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1760 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1761 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1762 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1763 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1764 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1765 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1766 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1767 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1768 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1769 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1770 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1771 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1772 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1773 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1774 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1775 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1776 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1777 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1778 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1779 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1780 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
1781 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1783 /* Support for Owen devices */
1784 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1786 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1788 /* Support Lego NXT using pbLua firmware */
1789 { USB_DEVICE(0x0694, 0xff00),
1790 .driver_info = NOT_A_MODEM,
1793 /* Support for Droids MuIn LCD */
1794 { USB_DEVICE(0x04d8, 0x000b),
1795 .driver_info = NO_DATA_INTERFACE,
1798 #if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
1799 { USB_DEVICE(0x04d8, 0x0082), /* Application mode */
1800 .driver_info = IGNORE_DEVICE,
1802 { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */
1803 .driver_info = IGNORE_DEVICE,
1807 /* control interfaces without any protocol set */
1808 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1809 USB_CDC_PROTO_NONE) },
1811 /* control interfaces with various AT-command sets */
1812 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1813 USB_CDC_ACM_PROTO_AT_V25TER) },
1814 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1815 USB_CDC_ACM_PROTO_AT_PCCA101) },
1816 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1817 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1818 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1819 USB_CDC_ACM_PROTO_AT_GSM) },
1820 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1821 USB_CDC_ACM_PROTO_AT_3G) },
1822 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1823 USB_CDC_ACM_PROTO_AT_CDMA) },
1828 MODULE_DEVICE_TABLE(usb, acm_ids);
1830 static struct usb_driver acm_driver = {
1833 .disconnect = acm_disconnect,
1835 .suspend = acm_suspend,
1836 .resume = acm_resume,
1837 .reset_resume = acm_reset_resume,
1839 .id_table = acm_ids,
1841 .supports_autosuspend = 1,
1843 .disable_hub_initiated_lpm = 1,
1847 * TTY driver structures.
1850 static const struct tty_operations acm_ops = {
1851 .install = acm_tty_install,
1852 .open = acm_tty_open,
1853 .close = acm_tty_close,
1854 .cleanup = acm_tty_cleanup,
1855 .hangup = acm_tty_hangup,
1856 .write = acm_tty_write,
1857 .write_room = acm_tty_write_room,
1858 .ioctl = acm_tty_ioctl,
1859 .throttle = acm_tty_throttle,
1860 .unthrottle = acm_tty_unthrottle,
1861 .chars_in_buffer = acm_tty_chars_in_buffer,
1862 .break_ctl = acm_tty_break_ctl,
1863 .set_termios = acm_tty_set_termios,
1864 .tiocmget = acm_tty_tiocmget,
1865 .tiocmset = acm_tty_tiocmset,
1872 static int __init acm_init(void)
1875 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1876 if (!acm_tty_driver)
1878 acm_tty_driver->driver_name = "acm",
1879 acm_tty_driver->name = "ttyACM",
1880 acm_tty_driver->major = ACM_TTY_MAJOR,
1881 acm_tty_driver->minor_start = 0,
1882 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1883 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1884 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1885 acm_tty_driver->init_termios = tty_std_termios;
1886 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1888 tty_set_operations(acm_tty_driver, &acm_ops);
1890 retval = tty_register_driver(acm_tty_driver);
1892 put_tty_driver(acm_tty_driver);
1896 retval = usb_register(&acm_driver);
1898 tty_unregister_driver(acm_tty_driver);
1899 put_tty_driver(acm_tty_driver);
1903 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1908 static void __exit acm_exit(void)
1910 usb_deregister(&acm_driver);
1911 tty_unregister_driver(acm_tty_driver);
1912 put_tty_driver(acm_tty_driver);
1915 module_init(acm_init);
1916 module_exit(acm_exit);
1918 MODULE_AUTHOR(DRIVER_AUTHOR);
1919 MODULE_DESCRIPTION(DRIVER_DESC);
1920 MODULE_LICENSE("GPL");
1921 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);