4 * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
5 * Copyright (c) 1999 Pavel Machek <pavel@suse.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>
11 * USB Abstract Control Model driver for USB modems and ISDN adapters
16 * v0.9 - thorough cleaning, URBification, almost a rewrite
17 * v0.10 - some more cleanups
18 * v0.11 - fixed flow control, read error doesn't stop reads
19 * v0.12 - added TIOCM ioctls, added break handling, made struct acm
21 * v0.13 - added termios, added hangup
22 * v0.14 - sized down struct acm
23 * v0.15 - fixed flow control again - characters could be lost
24 * v0.16 - added code for modems with swapped data and control interfaces
25 * v0.17 - added new style probing
26 * v0.18 - fixed new style probing for devices with more configurations
27 * v0.19 - fixed CLOCAL handling (thanks to Richard Shih-Ping Chan)
28 * v0.20 - switched to probing on interface (rather than device) class
29 * v0.21 - revert to probing on device for devices with multiple configs
30 * v0.22 - probe only the control interface. if usbcore doesn't choose the
31 * config we want, sysadmin changes bConfigurationValue in sysfs.
32 * v0.23 - use softirq for rx processing, as needed by tty layer
33 * v0.24 - change probe method to evaluate CDC union descriptor
34 * v0.25 - downstream tasks paralelized to maximize throughput
35 * v0.26 - multiple write urbs, writesize increased
39 * This program is free software; you can redistribute it and/or modify
40 * it under the terms of the GNU General Public License as published by
41 * the Free Software Foundation; either version 2 of the License, or
42 * (at your option) any later version.
44 * This program is distributed in the hope that it will be useful,
45 * but WITHOUT ANY WARRANTY; without even the implied warranty of
46 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
47 * GNU General Public License for more details.
49 * You should have received a copy of the GNU General Public License
50 * along with this program; if not, write to the Free Software
51 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
57 #include <linux/kernel.h>
58 #include <linux/errno.h>
59 #include <linux/init.h>
60 #include <linux/slab.h>
61 #include <linux/tty.h>
62 #include <linux/serial.h>
63 #include <linux/tty_driver.h>
64 #include <linux/tty_flip.h>
65 #include <linux/module.h>
66 #include <linux/mutex.h>
67 #include <linux/uaccess.h>
68 #include <linux/usb.h>
69 #include <linux/usb/cdc.h>
70 #include <asm/byteorder.h>
71 #include <asm/unaligned.h>
72 #include <linux/list.h>
77 #define ACM_CLOSE_TIMEOUT 15 /* seconds to let writes drain */
82 #define DRIVER_VERSION "v0.26"
83 #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek"
84 #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
86 static struct usb_driver acm_driver;
87 static struct tty_driver *acm_tty_driver;
88 static struct acm *acm_table[ACM_TTY_MINORS];
90 static DEFINE_MUTEX(open_mutex);
92 #define ACM_READY(acm) (acm && acm->dev && acm->port.count)
94 static const struct tty_port_operations acm_port_ops = {
104 * Functions for ACM control messages.
107 static int acm_ctrl_msg(struct acm *acm, int request, int value,
110 int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
111 request, USB_RT_ACM, value,
112 acm->control->altsetting[0].desc.bInterfaceNumber,
114 dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d",
115 request, value, len, retval);
116 return retval < 0 ? retval : 0;
119 /* devices aren't required to support these requests.
120 * the cdc acm descriptor tells whether they do...
122 #define acm_set_control(acm, control) \
123 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
124 #define acm_set_line(acm, line) \
125 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
126 #define acm_send_break(acm, ms) \
127 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
130 * Write buffer management.
131 * All of these assume proper locks taken by the caller.
134 static int acm_wb_alloc(struct acm *acm)
147 wbn = (wbn + 1) % ACM_NW;
153 static int acm_wb_is_avail(struct acm *acm)
159 spin_lock_irqsave(&acm->write_lock, flags);
160 for (i = 0; i < ACM_NW; i++)
162 spin_unlock_irqrestore(&acm->write_lock, flags);
167 * Finish write. Caller must hold acm->write_lock
169 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
173 usb_autopm_put_interface_async(acm->control);
179 * the caller is responsible for locking
182 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
188 wb->urb->transfer_buffer = wb->buf;
189 wb->urb->transfer_dma = wb->dmah;
190 wb->urb->transfer_buffer_length = wb->len;
191 wb->urb->dev = acm->dev;
193 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
195 dbg("usb_submit_urb(write bulk) failed: %d", rc);
196 acm_write_done(acm, wb);
201 static int acm_write_start(struct acm *acm, int wbn)
204 struct acm_wb *wb = &acm->wb[wbn];
207 spin_lock_irqsave(&acm->write_lock, flags);
210 spin_unlock_irqrestore(&acm->write_lock, flags);
214 dbg("%s susp_count: %d", __func__, acm->susp_count);
215 usb_autopm_get_interface_async(acm->control);
216 if (acm->susp_count) {
217 if (!acm->delayed_wb)
218 acm->delayed_wb = wb;
220 usb_autopm_put_interface_async(acm->control);
221 spin_unlock_irqrestore(&acm->write_lock, flags);
222 return 0; /* A white lie */
224 usb_mark_last_busy(acm->dev);
226 rc = acm_start_wb(acm, wb);
227 spin_unlock_irqrestore(&acm->write_lock, flags);
233 * attributes exported through sysfs
235 static ssize_t show_caps
236 (struct device *dev, struct device_attribute *attr, char *buf)
238 struct usb_interface *intf = to_usb_interface(dev);
239 struct acm *acm = usb_get_intfdata(intf);
241 return sprintf(buf, "%d", acm->ctrl_caps);
243 static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
245 static ssize_t show_country_codes
246 (struct device *dev, struct device_attribute *attr, char *buf)
248 struct usb_interface *intf = to_usb_interface(dev);
249 struct acm *acm = usb_get_intfdata(intf);
251 memcpy(buf, acm->country_codes, acm->country_code_size);
252 return acm->country_code_size;
255 static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
257 static ssize_t show_country_rel_date
258 (struct device *dev, struct device_attribute *attr, char *buf)
260 struct usb_interface *intf = to_usb_interface(dev);
261 struct acm *acm = usb_get_intfdata(intf);
263 return sprintf(buf, "%d", acm->country_rel_date);
266 static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
268 * Interrupt handlers for various ACM device responses
271 /* control interface reports status changes with "interrupt" transfers */
272 static void acm_ctrl_irq(struct urb *urb)
274 struct acm *acm = urb->context;
275 struct usb_cdc_notification *dr = urb->transfer_buffer;
276 struct tty_struct *tty;
280 int status = urb->status;
289 /* this urb is terminated, clean up */
290 dbg("%s - urb shutting down with status: %d", __func__, status);
293 dbg("%s - nonzero urb status received: %d", __func__, status);
300 data = (unsigned char *)(dr + 1);
301 switch (dr->bNotificationType) {
302 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
303 dbg("%s network", dr->wValue ?
304 "connected to" : "disconnected from");
307 case USB_CDC_NOTIFY_SERIAL_STATE:
308 tty = tty_port_tty_get(&acm->port);
309 newctrl = get_unaligned_le16(data);
313 (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
314 dbg("calling hangup");
320 acm->ctrlin = newctrl;
322 dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c",
323 acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
324 acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
325 acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
326 acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
327 acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
328 acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
329 acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
333 dbg("unknown notification %d received: index %d len %d data0 %d data1 %d",
334 dr->bNotificationType, dr->wIndex,
335 dr->wLength, data[0], data[1]);
339 usb_mark_last_busy(acm->dev);
340 retval = usb_submit_urb(urb, GFP_ATOMIC);
342 dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with "
343 "result %d", __func__, retval);
346 /* data interface returns incoming bytes, or we got unthrottled */
347 static void acm_read_bulk(struct urb *urb)
350 struct acm_ru *rcv = urb->context;
351 struct acm *acm = rcv->instance;
352 int status = urb->status;
354 dbg("Entering acm_read_bulk with status %d", status);
356 if (!ACM_READY(acm)) {
357 dev_dbg(&acm->data->dev, "Aborting, acm not ready");
360 usb_mark_last_busy(acm->dev);
363 dev_dbg(&acm->data->dev, "bulk rx status %d\n", status);
366 buf->size = urb->actual_length;
368 if (likely(status == 0)) {
369 spin_lock(&acm->read_lock);
371 list_add_tail(&rcv->list, &acm->spare_read_urbs);
372 list_add_tail(&buf->list, &acm->filled_read_bufs);
373 spin_unlock(&acm->read_lock);
375 /* we drop the buffer due to an error */
376 spin_lock(&acm->read_lock);
377 list_add_tail(&rcv->list, &acm->spare_read_urbs);
378 list_add(&buf->list, &acm->spare_read_bufs);
379 spin_unlock(&acm->read_lock);
380 /* nevertheless the tasklet must be kicked unconditionally
381 so the queue cannot dry up */
383 if (likely(!acm->susp_count))
384 tasklet_schedule(&acm->urb_task);
387 static void acm_rx_tasklet(unsigned long _acm)
389 struct acm *acm = (void *)_acm;
391 struct tty_struct *tty;
394 unsigned char throttled;
396 dbg("Entering acm_rx_tasklet");
398 if (!ACM_READY(acm)) {
399 dbg("acm_rx_tasklet: ACM not ready");
403 spin_lock_irqsave(&acm->throttle_lock, flags);
404 throttled = acm->throttle;
405 spin_unlock_irqrestore(&acm->throttle_lock, flags);
407 dbg("acm_rx_tasklet: throttled");
411 tty = tty_port_tty_get(&acm->port);
414 spin_lock_irqsave(&acm->read_lock, flags);
415 if (list_empty(&acm->filled_read_bufs)) {
416 spin_unlock_irqrestore(&acm->read_lock, flags);
419 buf = list_entry(acm->filled_read_bufs.next,
420 struct acm_rb, list);
421 list_del(&buf->list);
422 spin_unlock_irqrestore(&acm->read_lock, flags);
424 dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size);
427 spin_lock_irqsave(&acm->throttle_lock, flags);
428 throttled = acm->throttle;
429 spin_unlock_irqrestore(&acm->throttle_lock, flags);
431 tty_insert_flip_string(tty, buf->base, buf->size);
432 tty_flip_buffer_push(tty);
435 dbg("Throttling noticed");
436 spin_lock_irqsave(&acm->read_lock, flags);
437 list_add(&buf->list, &acm->filled_read_bufs);
438 spin_unlock_irqrestore(&acm->read_lock, flags);
443 spin_lock_irqsave(&acm->read_lock, flags);
444 list_add(&buf->list, &acm->spare_read_bufs);
445 spin_unlock_irqrestore(&acm->read_lock, flags);
451 while (!list_empty(&acm->spare_read_bufs)) {
452 spin_lock_irqsave(&acm->read_lock, flags);
453 if (list_empty(&acm->spare_read_urbs)) {
455 spin_unlock_irqrestore(&acm->read_lock, flags);
458 rcv = list_entry(acm->spare_read_urbs.next,
459 struct acm_ru, list);
460 list_del(&rcv->list);
461 spin_unlock_irqrestore(&acm->read_lock, flags);
463 buf = list_entry(acm->spare_read_bufs.next,
464 struct acm_rb, list);
465 list_del(&buf->list);
470 usb_fill_int_urb(rcv->urb, acm->dev,
474 acm_read_bulk, rcv, acm->bInterval);
476 usb_fill_bulk_urb(rcv->urb, acm->dev,
481 rcv->urb->transfer_dma = buf->dma;
482 rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
484 /* This shouldn't kill the driver as unsuccessful URBs are
485 returned to the free-urbs-pool and resubmited ASAP */
486 spin_lock_irqsave(&acm->read_lock, flags);
487 if (acm->susp_count ||
488 usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) {
489 list_add(&buf->list, &acm->spare_read_bufs);
490 list_add(&rcv->list, &acm->spare_read_urbs);
492 spin_unlock_irqrestore(&acm->read_lock, flags);
495 spin_unlock_irqrestore(&acm->read_lock, flags);
496 dbg("acm_rx_tasklet: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf);
499 spin_lock_irqsave(&acm->read_lock, flags);
501 spin_unlock_irqrestore(&acm->read_lock, flags);
504 /* data interface wrote those outgoing bytes */
505 static void acm_write_bulk(struct urb *urb)
507 struct acm_wb *wb = urb->context;
508 struct acm *acm = wb->instance;
511 if (verbose || urb->status
512 || (urb->actual_length != urb->transfer_buffer_length))
513 dev_dbg(&acm->data->dev, "tx %d/%d bytes -- > %d\n",
515 urb->transfer_buffer_length,
518 spin_lock_irqsave(&acm->write_lock, flags);
519 acm_write_done(acm, wb);
520 spin_unlock_irqrestore(&acm->write_lock, flags);
522 schedule_work(&acm->work);
524 wake_up_interruptible(&acm->drain_wait);
527 static void acm_softint(struct work_struct *work)
529 struct acm *acm = container_of(work, struct acm, work);
530 struct tty_struct *tty;
532 dev_vdbg(&acm->data->dev, "tx work\n");
535 tty = tty_port_tty_get(&acm->port);
544 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
549 dbg("Entering acm_tty_open.");
551 mutex_lock(&open_mutex);
553 acm = acm_table[tty->index];
554 if (!acm || !acm->dev)
559 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
561 tty->driver_data = acm;
562 tty_port_tty_set(&acm->port, tty);
564 if (usb_autopm_get_interface(acm->control) < 0)
567 acm->control->needs_remote_wakeup = 1;
569 mutex_lock(&acm->mutex);
570 if (acm->port.count++) {
571 mutex_unlock(&acm->mutex);
572 usb_autopm_put_interface(acm->control);
576 acm->ctrlurb->dev = acm->dev;
577 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
578 dbg("usb_submit_urb(ctrl irq) failed");
582 if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) &&
583 (acm->ctrl_caps & USB_CDC_CAP_LINE))
586 usb_autopm_put_interface(acm->control);
588 INIT_LIST_HEAD(&acm->spare_read_urbs);
589 INIT_LIST_HEAD(&acm->spare_read_bufs);
590 INIT_LIST_HEAD(&acm->filled_read_bufs);
592 for (i = 0; i < acm->rx_buflimit; i++)
593 list_add(&(acm->ru[i].list), &acm->spare_read_urbs);
594 for (i = 0; i < acm->rx_buflimit; i++)
595 list_add(&(acm->rb[i].list), &acm->spare_read_bufs);
599 set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
600 rv = tty_port_block_til_ready(&acm->port, tty, filp);
601 tasklet_schedule(&acm->urb_task);
603 mutex_unlock(&acm->mutex);
605 mutex_unlock(&open_mutex);
609 usb_kill_urb(acm->ctrlurb);
612 mutex_unlock(&acm->mutex);
613 usb_autopm_put_interface(acm->control);
615 mutex_unlock(&open_mutex);
616 tty_port_tty_set(&acm->port, NULL);
620 static void acm_tty_unregister(struct acm *acm)
624 nr = acm->rx_buflimit;
625 tty_unregister_device(acm_tty_driver, acm->minor);
626 usb_put_intf(acm->control);
627 acm_table[acm->minor] = NULL;
628 usb_free_urb(acm->ctrlurb);
629 for (i = 0; i < ACM_NW; i++)
630 usb_free_urb(acm->wb[i].urb);
631 for (i = 0; i < nr; i++)
632 usb_free_urb(acm->ru[i].urb);
633 kfree(acm->country_codes);
637 static int acm_tty_chars_in_buffer(struct tty_struct *tty);
639 static void acm_port_down(struct acm *acm, int drain)
641 int i, nr = acm->rx_buflimit;
642 mutex_lock(&open_mutex);
644 usb_autopm_get_interface(acm->control);
645 acm_set_control(acm, acm->ctrlout = 0);
646 /* try letting the last writes drain naturally */
648 wait_event_interruptible_timeout(acm->drain_wait,
649 (ACM_NW == acm_wb_is_avail(acm)) || !acm->dev,
650 ACM_CLOSE_TIMEOUT * HZ);
652 usb_kill_urb(acm->ctrlurb);
653 for (i = 0; i < ACM_NW; i++)
654 usb_kill_urb(acm->wb[i].urb);
655 for (i = 0; i < nr; i++)
656 usb_kill_urb(acm->ru[i].urb);
657 acm->control->needs_remote_wakeup = 0;
658 usb_autopm_put_interface(acm->control);
660 mutex_unlock(&open_mutex);
663 static void acm_tty_hangup(struct tty_struct *tty)
665 struct acm *acm = tty->driver_data;
666 tty_port_hangup(&acm->port);
667 acm_port_down(acm, 0);
670 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
672 struct acm *acm = tty->driver_data;
674 /* Perform the closing process and see if we need to do the hardware
678 if (tty_port_close_start(&acm->port, tty, filp) == 0) {
679 mutex_lock(&open_mutex);
681 tty_port_tty_set(&acm->port, NULL);
682 acm_tty_unregister(acm);
683 tty->driver_data = NULL;
685 mutex_unlock(&open_mutex);
688 acm_port_down(acm, 0);
689 tty_port_close_end(&acm->port, tty);
690 tty_port_tty_set(&acm->port, NULL);
693 static int acm_tty_write(struct tty_struct *tty,
694 const unsigned char *buf, int count)
696 struct acm *acm = tty->driver_data;
702 dbg("Entering acm_tty_write to write %d bytes,", count);
709 spin_lock_irqsave(&acm->write_lock, flags);
710 wbn = acm_wb_alloc(acm);
712 spin_unlock_irqrestore(&acm->write_lock, flags);
717 count = (count > acm->writesize) ? acm->writesize : count;
718 dbg("Get %d bytes...", count);
719 memcpy(wb->buf, buf, count);
721 spin_unlock_irqrestore(&acm->write_lock, flags);
723 stat = acm_write_start(acm, wbn);
729 static int acm_tty_write_room(struct tty_struct *tty)
731 struct acm *acm = tty->driver_data;
735 * Do not let the line discipline to know that we have a reserve,
736 * or it might get too enthusiastic.
738 return acm_wb_is_avail(acm) ? acm->writesize : 0;
741 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
743 struct acm *acm = tty->driver_data;
747 * This is inaccurate (overcounts), but it works.
749 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
752 static void acm_tty_throttle(struct tty_struct *tty)
754 struct acm *acm = tty->driver_data;
757 spin_lock_bh(&acm->throttle_lock);
759 spin_unlock_bh(&acm->throttle_lock);
762 static void acm_tty_unthrottle(struct tty_struct *tty)
764 struct acm *acm = tty->driver_data;
767 spin_lock_bh(&acm->throttle_lock);
769 spin_unlock_bh(&acm->throttle_lock);
770 tasklet_schedule(&acm->urb_task);
773 static int acm_tty_break_ctl(struct tty_struct *tty, int state)
775 struct acm *acm = tty->driver_data;
779 retval = acm_send_break(acm, state ? 0xffff : 0);
781 dbg("send break failed");
785 static int acm_tty_tiocmget(struct tty_struct *tty, struct file *file)
787 struct acm *acm = tty->driver_data;
792 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
793 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
794 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
795 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
796 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
800 static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file,
801 unsigned int set, unsigned int clear)
803 struct acm *acm = tty->driver_data;
804 unsigned int newctrl;
809 newctrl = acm->ctrlout;
810 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
811 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
812 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
813 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
815 newctrl = (newctrl & ~clear) | set;
817 if (acm->ctrlout == newctrl)
819 return acm_set_control(acm, acm->ctrlout = newctrl);
822 static int acm_tty_ioctl(struct tty_struct *tty, struct file *file,
823 unsigned int cmd, unsigned long arg)
825 struct acm *acm = tty->driver_data;
833 static const __u32 acm_tty_speed[] = {
834 0, 50, 75, 110, 134, 150, 200, 300, 600,
835 1200, 1800, 2400, 4800, 9600, 19200, 38400,
836 57600, 115200, 230400, 460800, 500000, 576000,
837 921600, 1000000, 1152000, 1500000, 2000000,
838 2500000, 3000000, 3500000, 4000000
841 static const __u8 acm_tty_size[] = {
845 static void acm_tty_set_termios(struct tty_struct *tty,
846 struct ktermios *termios_old)
848 struct acm *acm = tty->driver_data;
849 struct ktermios *termios = tty->termios;
850 struct usb_cdc_line_coding newline;
851 int newctrl = acm->ctrlout;
856 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
857 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
858 newline.bParityType = termios->c_cflag & PARENB ?
859 (termios->c_cflag & PARODD ? 1 : 2) +
860 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
861 newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4];
862 /* FIXME: Needs to clear unsupported bits in the termios */
863 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
865 if (!newline.dwDTERate) {
866 newline.dwDTERate = acm->line.dwDTERate;
867 newctrl &= ~ACM_CTRL_DTR;
869 newctrl |= ACM_CTRL_DTR;
871 if (newctrl != acm->ctrlout)
872 acm_set_control(acm, acm->ctrlout = newctrl);
874 if (memcmp(&acm->line, &newline, sizeof newline)) {
875 memcpy(&acm->line, &newline, sizeof newline);
876 dbg("set line: %d %d %d %d", le32_to_cpu(newline.dwDTERate),
877 newline.bCharFormat, newline.bParityType,
879 acm_set_line(acm, &acm->line);
884 * USB probe and disconnect routines.
887 /* Little helpers: write/read buffers free */
888 static void acm_write_buffers_free(struct acm *acm)
892 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
894 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
895 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
898 static void acm_read_buffers_free(struct acm *acm)
900 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
901 int i, n = acm->rx_buflimit;
903 for (i = 0; i < n; i++)
904 usb_free_coherent(usb_dev, acm->readsize,
905 acm->rb[i].base, acm->rb[i].dma);
908 /* Little helper: write buffers allocate */
909 static int acm_write_buffers_alloc(struct acm *acm)
914 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
915 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
921 usb_free_coherent(acm->dev, acm->writesize,
930 static int acm_probe(struct usb_interface *intf,
931 const struct usb_device_id *id)
933 struct usb_cdc_union_desc *union_header = NULL;
934 struct usb_cdc_country_functional_desc *cfd = NULL;
935 unsigned char *buffer = intf->altsetting->extra;
936 int buflen = intf->altsetting->extralen;
937 struct usb_interface *control_interface;
938 struct usb_interface *data_interface;
939 struct usb_endpoint_descriptor *epctrl = NULL;
940 struct usb_endpoint_descriptor *epread = NULL;
941 struct usb_endpoint_descriptor *epwrite = NULL;
942 struct usb_device *usb_dev = interface_to_usbdev(intf);
945 int ctrlsize, readsize;
947 u8 ac_management_function = 0;
948 u8 call_management_function = 0;
949 int call_interface_num = -1;
950 int data_interface_num;
951 unsigned long quirks;
954 int combined_interfaces = 0;
957 quirks = (unsigned long)id->driver_info;
958 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
960 /* handle quirks deadly to normal probing*/
961 if (quirks == NO_UNION_NORMAL) {
962 data_interface = usb_ifnum_to_if(usb_dev, 1);
963 control_interface = usb_ifnum_to_if(usb_dev, 0);
964 goto skip_normal_probe;
969 dev_err(&intf->dev, "Weird descriptor references\n");
974 if (intf->cur_altsetting->endpoint->extralen &&
975 intf->cur_altsetting->endpoint->extra) {
977 "Seeking extra descriptors on endpoint\n");
978 buflen = intf->cur_altsetting->endpoint->extralen;
979 buffer = intf->cur_altsetting->endpoint->extra;
982 "Zero length descriptor references\n");
988 if (buffer[1] != USB_DT_CS_INTERFACE) {
989 dev_err(&intf->dev, "skipping garbage\n");
994 case USB_CDC_UNION_TYPE: /* we've found it */
996 dev_err(&intf->dev, "More than one "
997 "union descriptor, skipping ...\n");
1000 union_header = (struct usb_cdc_union_desc *)buffer;
1002 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
1003 cfd = (struct usb_cdc_country_functional_desc *)buffer;
1005 case USB_CDC_HEADER_TYPE: /* maybe check version */
1006 break; /* for now we ignore it */
1007 case USB_CDC_ACM_TYPE:
1008 ac_management_function = buffer[3];
1010 case USB_CDC_CALL_MANAGEMENT_TYPE:
1011 call_management_function = buffer[3];
1012 call_interface_num = buffer[4];
1013 if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
1014 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1017 /* there are LOTS more CDC descriptors that
1018 * could legitimately be found here.
1020 dev_dbg(&intf->dev, "Ignoring descriptor: "
1021 "type %02x, length %d\n",
1022 buffer[2], buffer[0]);
1026 buflen -= buffer[0];
1027 buffer += buffer[0];
1030 if (!union_header) {
1031 if (call_interface_num > 0) {
1032 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
1033 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1034 control_interface = intf;
1036 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1037 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1040 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1041 combined_interfaces = 1;
1042 control_interface = data_interface = intf;
1043 goto look_for_collapsed_interface;
1047 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1048 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1049 if (!control_interface || !data_interface) {
1050 dev_dbg(&intf->dev, "no interfaces\n");
1055 if (data_interface_num != call_interface_num)
1056 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1058 if (control_interface == data_interface) {
1059 /* some broken devices designed for windows work this way */
1060 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1061 combined_interfaces = 1;
1062 /* a popular other OS doesn't use it */
1063 quirks |= NO_CAP_LINE;
1064 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1065 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1068 look_for_collapsed_interface:
1069 for (i = 0; i < 3; i++) {
1070 struct usb_endpoint_descriptor *ep;
1071 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1073 if (usb_endpoint_is_int_in(ep))
1075 else if (usb_endpoint_is_bulk_out(ep))
1077 else if (usb_endpoint_is_bulk_in(ep))
1082 if (!epctrl || !epread || !epwrite)
1085 goto made_compressed_probe;
1090 /*workaround for switched interfaces */
1091 if (data_interface->cur_altsetting->desc.bInterfaceClass
1092 != CDC_DATA_INTERFACE_TYPE) {
1093 if (control_interface->cur_altsetting->desc.bInterfaceClass
1094 == CDC_DATA_INTERFACE_TYPE) {
1095 struct usb_interface *t;
1097 "Your device has switched interfaces.\n");
1098 t = control_interface;
1099 control_interface = data_interface;
1106 /* Accept probe requests only for the control interface */
1107 if (!combined_interfaces && intf != control_interface)
1110 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1111 /* valid in this context */
1112 dev_dbg(&intf->dev, "The data interface isn't available\n");
1117 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
1120 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1121 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1122 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1125 /* workaround for switched endpoints */
1126 if (!usb_endpoint_dir_in(epread)) {
1127 /* descriptors are swapped */
1128 struct usb_endpoint_descriptor *t;
1130 "The data interface has switched endpoints\n");
1135 made_compressed_probe:
1136 dbg("interfaces are valid");
1137 for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
1139 if (minor == ACM_TTY_MINORS) {
1140 dev_err(&intf->dev, "no more free acm devices\n");
1144 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1146 dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n");
1150 ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
1151 readsize = le16_to_cpu(epread->wMaxPacketSize) *
1152 (quirks == SINGLE_RX_URB ? 1 : 2);
1153 acm->combined_interfaces = combined_interfaces;
1154 acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
1155 acm->control = control_interface;
1156 acm->data = data_interface;
1159 acm->ctrl_caps = ac_management_function;
1160 if (quirks & NO_CAP_LINE)
1161 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1162 acm->ctrlsize = ctrlsize;
1163 acm->readsize = readsize;
1164 acm->rx_buflimit = num_rx_buf;
1165 acm->urb_task.func = acm_rx_tasklet;
1166 acm->urb_task.data = (unsigned long) acm;
1167 INIT_WORK(&acm->work, acm_softint);
1168 init_waitqueue_head(&acm->drain_wait);
1169 spin_lock_init(&acm->throttle_lock);
1170 spin_lock_init(&acm->write_lock);
1171 spin_lock_init(&acm->read_lock);
1172 mutex_init(&acm->mutex);
1173 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1174 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1176 acm->bInterval = epread->bInterval;
1177 tty_port_init(&acm->port);
1178 acm->port.ops = &acm_port_ops;
1180 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1182 dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1185 acm->ctrl_buffer = buf;
1187 if (acm_write_buffers_alloc(acm) < 0) {
1188 dev_dbg(&intf->dev, "out of memory (write buffer alloc)\n");
1192 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1193 if (!acm->ctrlurb) {
1194 dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1197 for (i = 0; i < num_rx_buf; i++) {
1198 struct acm_ru *rcv = &(acm->ru[i]);
1200 rcv->urb = usb_alloc_urb(0, GFP_KERNEL);
1201 if (rcv->urb == NULL) {
1203 "out of memory (read urbs usb_alloc_urb)\n");
1207 rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1208 rcv->instance = acm;
1210 for (i = 0; i < num_rx_buf; i++) {
1211 struct acm_rb *rb = &(acm->rb[i]);
1213 rb->base = usb_alloc_coherent(acm->dev, readsize,
1214 GFP_KERNEL, &rb->dma);
1217 "out of memory (read bufs usb_alloc_coherent)\n");
1221 for (i = 0; i < ACM_NW; i++) {
1222 struct acm_wb *snd = &(acm->wb[i]);
1224 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1225 if (snd->urb == NULL) {
1227 "out of memory (write urbs usb_alloc_urb)");
1231 if (usb_endpoint_xfer_int(epwrite))
1232 usb_fill_int_urb(snd->urb, usb_dev,
1233 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1234 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1236 usb_fill_bulk_urb(snd->urb, usb_dev,
1237 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1238 NULL, acm->writesize, acm_write_bulk, snd);
1239 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1240 snd->instance = acm;
1243 usb_set_intfdata(intf, acm);
1245 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1249 if (cfd) { /* export the country data */
1250 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1251 if (!acm->country_codes)
1252 goto skip_countries;
1253 acm->country_code_size = cfd->bLength - 4;
1254 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1256 acm->country_rel_date = cfd->iCountryCodeRelDate;
1258 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1260 kfree(acm->country_codes);
1261 goto skip_countries;
1264 i = device_create_file(&intf->dev,
1265 &dev_attr_iCountryCodeRelDate);
1267 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1268 kfree(acm->country_codes);
1269 goto skip_countries;
1274 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1275 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1276 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1277 /* works around buggy devices */
1278 epctrl->bInterval ? epctrl->bInterval : 0xff);
1279 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1280 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1282 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1284 acm_set_control(acm, acm->ctrlout);
1286 acm->line.dwDTERate = cpu_to_le32(9600);
1287 acm->line.bDataBits = 8;
1288 acm_set_line(acm, &acm->line);
1290 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1291 usb_set_intfdata(data_interface, acm);
1293 usb_get_intf(control_interface);
1294 tty_register_device(acm_tty_driver, minor, &control_interface->dev);
1296 acm_table[minor] = acm;
1300 for (i = 0; i < ACM_NW; i++)
1301 usb_free_urb(acm->wb[i].urb);
1303 acm_read_buffers_free(acm);
1305 for (i = 0; i < num_rx_buf; i++)
1306 usb_free_urb(acm->ru[i].urb);
1307 usb_free_urb(acm->ctrlurb);
1309 acm_write_buffers_free(acm);
1311 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1318 static void stop_data_traffic(struct acm *acm)
1321 dbg("Entering stop_data_traffic");
1323 tasklet_disable(&acm->urb_task);
1325 usb_kill_urb(acm->ctrlurb);
1326 for (i = 0; i < ACM_NW; i++)
1327 usb_kill_urb(acm->wb[i].urb);
1328 for (i = 0; i < acm->rx_buflimit; i++)
1329 usb_kill_urb(acm->ru[i].urb);
1331 tasklet_enable(&acm->urb_task);
1333 cancel_work_sync(&acm->work);
1336 static void acm_disconnect(struct usb_interface *intf)
1338 struct acm *acm = usb_get_intfdata(intf);
1339 struct usb_device *usb_dev = interface_to_usbdev(intf);
1340 struct tty_struct *tty;
1342 /* sibling interface is already cleaning up */
1346 mutex_lock(&open_mutex);
1347 if (acm->country_codes) {
1348 device_remove_file(&acm->control->dev,
1349 &dev_attr_wCountryCodes);
1350 device_remove_file(&acm->control->dev,
1351 &dev_attr_iCountryCodeRelDate);
1353 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1355 usb_set_intfdata(acm->control, NULL);
1356 usb_set_intfdata(acm->data, NULL);
1358 stop_data_traffic(acm);
1360 acm_write_buffers_free(acm);
1361 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer,
1363 acm_read_buffers_free(acm);
1365 if (!acm->combined_interfaces)
1366 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1367 acm->data : acm->control);
1369 if (acm->port.count == 0) {
1370 acm_tty_unregister(acm);
1371 mutex_unlock(&open_mutex);
1375 mutex_unlock(&open_mutex);
1376 tty = tty_port_tty_get(&acm->port);
1384 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1386 struct acm *acm = usb_get_intfdata(intf);
1389 if (message.event & PM_EVENT_AUTO) {
1392 spin_lock_irq(&acm->read_lock);
1393 spin_lock(&acm->write_lock);
1394 b = acm->processing + acm->transmitting;
1395 spin_unlock(&acm->write_lock);
1396 spin_unlock_irq(&acm->read_lock);
1401 spin_lock_irq(&acm->read_lock);
1402 spin_lock(&acm->write_lock);
1403 cnt = acm->susp_count++;
1404 spin_unlock(&acm->write_lock);
1405 spin_unlock_irq(&acm->read_lock);
1410 we treat opened interfaces differently,
1411 we must guard against open
1413 mutex_lock(&acm->mutex);
1415 if (acm->port.count)
1416 stop_data_traffic(acm);
1418 mutex_unlock(&acm->mutex);
1422 static int acm_resume(struct usb_interface *intf)
1424 struct acm *acm = usb_get_intfdata(intf);
1429 spin_lock_irq(&acm->read_lock);
1430 acm->susp_count -= 1;
1431 cnt = acm->susp_count;
1432 spin_unlock_irq(&acm->read_lock);
1437 mutex_lock(&acm->mutex);
1438 if (acm->port.count) {
1439 rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
1441 spin_lock_irq(&acm->write_lock);
1442 if (acm->delayed_wb) {
1443 wb = acm->delayed_wb;
1444 acm->delayed_wb = NULL;
1445 spin_unlock_irq(&acm->write_lock);
1446 acm_start_wb(acm, wb);
1448 spin_unlock_irq(&acm->write_lock);
1452 * delayed error checking because we must
1453 * do the write path at all cost
1458 tasklet_schedule(&acm->urb_task);
1462 mutex_unlock(&acm->mutex);
1466 static int acm_reset_resume(struct usb_interface *intf)
1468 struct acm *acm = usb_get_intfdata(intf);
1469 struct tty_struct *tty;
1471 mutex_lock(&acm->mutex);
1472 if (acm->port.count) {
1473 tty = tty_port_tty_get(&acm->port);
1479 mutex_unlock(&acm->mutex);
1480 return acm_resume(intf);
1483 #endif /* CONFIG_PM */
1485 #define NOKIA_PCSUITE_ACM_INFO(x) \
1486 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1487 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1488 USB_CDC_ACM_PROTO_VENDOR)
1491 * USB driver structure.
1494 static const struct usb_device_id acm_ids[] = {
1495 /* quirky and broken devices */
1496 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1497 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1499 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1500 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1502 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1503 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1505 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1506 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1508 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1509 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1511 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1512 .driver_info = SINGLE_RX_URB,
1514 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1515 .driver_info = SINGLE_RX_URB, /* firmware bug */
1517 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1518 .driver_info = SINGLE_RX_URB, /* firmware bug */
1520 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1521 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1523 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1524 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1526 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1527 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1529 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1530 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1532 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1533 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1535 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1537 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1538 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1539 data interface instead of
1540 communications interface.
1541 Maybe we should define a new
1544 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1545 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1547 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1548 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1551 /* Nokia S60 phones expose two ACM channels. The first is
1552 * a modem and is picked up by the standard AT-command
1553 * information below. The second is 'vendor-specific' but
1554 * is treated as a serial device at the S60 end, so we want
1555 * to expose it on Linux too. */
1556 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1557 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1558 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1559 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1560 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1561 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1562 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1563 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1564 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1565 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1566 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1567 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1568 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1569 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1570 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1571 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1572 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1573 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1574 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1575 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1576 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1577 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1578 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1579 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1580 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1581 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1582 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1583 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1584 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1585 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1586 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1587 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1588 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1589 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1590 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1591 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1592 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1593 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1594 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1595 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1596 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1597 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1598 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1600 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1602 /* Support Lego NXT using pbLua firmware */
1603 { USB_DEVICE(0x0694, 0xff00),
1604 .driver_info = NOT_A_MODEM,
1607 /* control interfaces with various AT-command sets */
1608 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1609 USB_CDC_ACM_PROTO_AT_V25TER) },
1610 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1611 USB_CDC_ACM_PROTO_AT_PCCA101) },
1612 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1613 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1614 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1615 USB_CDC_ACM_PROTO_AT_GSM) },
1616 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1617 USB_CDC_ACM_PROTO_AT_3G) },
1618 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1619 USB_CDC_ACM_PROTO_AT_CDMA) },
1624 MODULE_DEVICE_TABLE(usb, acm_ids);
1626 static struct usb_driver acm_driver = {
1629 .disconnect = acm_disconnect,
1631 .suspend = acm_suspend,
1632 .resume = acm_resume,
1633 .reset_resume = acm_reset_resume,
1635 .id_table = acm_ids,
1637 .supports_autosuspend = 1,
1642 * TTY driver structures.
1645 static const struct tty_operations acm_ops = {
1646 .open = acm_tty_open,
1647 .close = acm_tty_close,
1648 .hangup = acm_tty_hangup,
1649 .write = acm_tty_write,
1650 .write_room = acm_tty_write_room,
1651 .ioctl = acm_tty_ioctl,
1652 .throttle = acm_tty_throttle,
1653 .unthrottle = acm_tty_unthrottle,
1654 .chars_in_buffer = acm_tty_chars_in_buffer,
1655 .break_ctl = acm_tty_break_ctl,
1656 .set_termios = acm_tty_set_termios,
1657 .tiocmget = acm_tty_tiocmget,
1658 .tiocmset = acm_tty_tiocmset,
1665 static int __init acm_init(void)
1668 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1669 if (!acm_tty_driver)
1671 acm_tty_driver->owner = THIS_MODULE,
1672 acm_tty_driver->driver_name = "acm",
1673 acm_tty_driver->name = "ttyACM",
1674 acm_tty_driver->major = ACM_TTY_MAJOR,
1675 acm_tty_driver->minor_start = 0,
1676 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1677 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1678 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1679 acm_tty_driver->init_termios = tty_std_termios;
1680 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1682 tty_set_operations(acm_tty_driver, &acm_ops);
1684 retval = tty_register_driver(acm_tty_driver);
1686 put_tty_driver(acm_tty_driver);
1690 retval = usb_register(&acm_driver);
1692 tty_unregister_driver(acm_tty_driver);
1693 put_tty_driver(acm_tty_driver);
1697 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1703 static void __exit acm_exit(void)
1705 usb_deregister(&acm_driver);
1706 tty_unregister_driver(acm_tty_driver);
1707 put_tty_driver(acm_tty_driver);
1710 module_init(acm_init);
1711 module_exit(acm_exit);
1713 MODULE_AUTHOR(DRIVER_AUTHOR);
1714 MODULE_DESCRIPTION(DRIVER_DESC);
1715 MODULE_LICENSE("GPL");
1716 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);