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(open_mutex);
63 #define ACM_READY(acm) (acm && acm->dev && acm->port.count)
65 static const struct tty_port_operations acm_port_ops = {
69 * Functions for ACM control messages.
72 static int acm_ctrl_msg(struct acm *acm, int request, int value,
77 retval = usb_autopm_get_interface(acm->control);
81 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
82 request, USB_RT_ACM, value,
83 acm->control->altsetting[0].desc.bInterfaceNumber,
86 dev_dbg(&acm->control->dev,
87 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
88 __func__, request, value, len, retval);
90 usb_autopm_put_interface(acm->control);
92 return retval < 0 ? retval : 0;
95 /* devices aren't required to support these requests.
96 * the cdc acm descriptor tells whether they do...
98 #define acm_set_control(acm, control) \
99 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
100 #define acm_set_line(acm, line) \
101 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
102 #define acm_send_break(acm, ms) \
103 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
106 * Write buffer management.
107 * All of these assume proper locks taken by the caller.
110 static int acm_wb_alloc(struct acm *acm)
123 wbn = (wbn + 1) % ACM_NW;
129 static int acm_wb_is_avail(struct acm *acm)
135 spin_lock_irqsave(&acm->write_lock, flags);
136 for (i = 0; i < ACM_NW; i++)
138 spin_unlock_irqrestore(&acm->write_lock, flags);
143 * Finish write. Caller must hold acm->write_lock
145 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
149 usb_autopm_put_interface_async(acm->control);
155 * the caller is responsible for locking
158 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
164 wb->urb->transfer_buffer = wb->buf;
165 wb->urb->transfer_dma = wb->dmah;
166 wb->urb->transfer_buffer_length = wb->len;
167 wb->urb->dev = acm->dev;
169 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
171 dev_err(&acm->data->dev,
172 "%s - usb_submit_urb(write bulk) failed: %d\n",
174 acm_write_done(acm, wb);
179 static int acm_write_start(struct acm *acm, int wbn)
182 struct acm_wb *wb = &acm->wb[wbn];
185 spin_lock_irqsave(&acm->write_lock, flags);
188 spin_unlock_irqrestore(&acm->write_lock, flags);
192 dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
194 rc = usb_autopm_get_interface_async(acm->control);
197 spin_unlock_irqrestore(&acm->write_lock, flags);
201 if (acm->susp_count) {
202 usb_anchor_urb(wb->urb, &acm->delayed);
203 spin_unlock_irqrestore(&acm->write_lock, flags);
206 usb_mark_last_busy(acm->dev);
208 rc = acm_start_wb(acm, wb);
209 spin_unlock_irqrestore(&acm->write_lock, flags);
215 * attributes exported through sysfs
217 static ssize_t show_caps
218 (struct device *dev, struct device_attribute *attr, char *buf)
220 struct usb_interface *intf = to_usb_interface(dev);
221 struct acm *acm = usb_get_intfdata(intf);
223 return sprintf(buf, "%d", acm->ctrl_caps);
225 static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
227 static ssize_t show_country_codes
228 (struct device *dev, struct device_attribute *attr, char *buf)
230 struct usb_interface *intf = to_usb_interface(dev);
231 struct acm *acm = usb_get_intfdata(intf);
233 memcpy(buf, acm->country_codes, acm->country_code_size);
234 return acm->country_code_size;
237 static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
239 static ssize_t show_country_rel_date
240 (struct device *dev, struct device_attribute *attr, char *buf)
242 struct usb_interface *intf = to_usb_interface(dev);
243 struct acm *acm = usb_get_intfdata(intf);
245 return sprintf(buf, "%d", acm->country_rel_date);
248 static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
250 * Interrupt handlers for various ACM device responses
253 /* control interface reports status changes with "interrupt" transfers */
254 static void acm_ctrl_irq(struct urb *urb)
256 struct acm *acm = urb->context;
257 struct usb_cdc_notification *dr = urb->transfer_buffer;
258 struct tty_struct *tty;
262 int status = urb->status;
271 /* this urb is terminated, clean up */
272 dev_dbg(&acm->control->dev,
273 "%s - urb shutting down with status: %d\n",
277 dev_dbg(&acm->control->dev,
278 "%s - nonzero urb status received: %d\n",
286 usb_mark_last_busy(acm->dev);
288 data = (unsigned char *)(dr + 1);
289 switch (dr->bNotificationType) {
290 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
291 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
292 __func__, dr->wValue);
295 case USB_CDC_NOTIFY_SERIAL_STATE:
296 tty = tty_port_tty_get(&acm->port);
297 newctrl = get_unaligned_le16(data);
301 (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
302 dev_dbg(&acm->control->dev,
303 "%s - calling hangup\n", __func__);
309 acm->ctrlin = newctrl;
311 dev_dbg(&acm->control->dev,
312 "%s - input control lines: dcd%c dsr%c break%c "
313 "ring%c framing%c parity%c overrun%c\n",
315 acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
316 acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
317 acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
318 acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
319 acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
320 acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
321 acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
325 dev_dbg(&acm->control->dev,
326 "%s - unknown notification %d received: index %d "
327 "len %d data0 %d data1 %d\n",
329 dr->bNotificationType, dr->wIndex,
330 dr->wLength, data[0], data[1]);
334 retval = usb_submit_urb(urb, GFP_ATOMIC);
336 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
340 static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
344 if (!test_and_clear_bit(index, &acm->read_urbs_free))
347 dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
349 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
352 dev_err(&acm->data->dev,
353 "%s - usb_submit_urb failed: %d\n",
356 set_bit(index, &acm->read_urbs_free);
363 static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
368 for (i = 0; i < acm->rx_buflimit; ++i) {
369 res = acm_submit_read_urb(acm, i, mem_flags);
377 static void acm_process_read_urb(struct acm *acm, struct urb *urb)
379 struct tty_struct *tty;
381 if (!urb->actual_length)
384 tty = tty_port_tty_get(&acm->port);
388 tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
389 tty_flip_buffer_push(tty);
394 static void acm_read_bulk_callback(struct urb *urb)
396 struct acm_rb *rb = urb->context;
397 struct acm *acm = rb->instance;
400 dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
401 rb->index, urb->actual_length);
402 set_bit(rb->index, &acm->read_urbs_free);
405 dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
408 usb_mark_last_busy(acm->dev);
411 dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
412 __func__, urb->status);
415 acm_process_read_urb(acm, urb);
417 /* throttle device if requested by tty */
418 spin_lock_irqsave(&acm->read_lock, flags);
419 acm->throttled = acm->throttle_req;
420 if (!acm->throttled && !acm->susp_count) {
421 spin_unlock_irqrestore(&acm->read_lock, flags);
422 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
424 spin_unlock_irqrestore(&acm->read_lock, flags);
428 /* data interface wrote those outgoing bytes */
429 static void acm_write_bulk(struct urb *urb)
431 struct acm_wb *wb = urb->context;
432 struct acm *acm = wb->instance;
435 if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
436 dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
439 urb->transfer_buffer_length,
442 spin_lock_irqsave(&acm->write_lock, flags);
443 acm_write_done(acm, wb);
444 spin_unlock_irqrestore(&acm->write_lock, flags);
446 schedule_work(&acm->work);
449 static void acm_softint(struct work_struct *work)
451 struct acm *acm = container_of(work, struct acm, work);
452 struct tty_struct *tty;
454 dev_vdbg(&acm->data->dev, "%s\n", __func__);
458 tty = tty_port_tty_get(&acm->port);
469 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
474 mutex_lock(&open_mutex);
476 acm = acm_table[tty->index];
477 if (!acm || !acm->dev)
482 dev_dbg(&acm->control->dev, "%s\n", __func__);
484 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
486 tty->driver_data = acm;
487 tty_port_tty_set(&acm->port, tty);
489 if (usb_autopm_get_interface(acm->control) < 0)
492 acm->control->needs_remote_wakeup = 1;
494 mutex_lock(&acm->mutex);
495 if (acm->port.count++) {
496 mutex_unlock(&acm->mutex);
497 usb_autopm_put_interface(acm->control);
501 acm->ctrlurb->dev = acm->dev;
502 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
503 dev_err(&acm->control->dev,
504 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
508 if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) &&
509 (acm->ctrl_caps & USB_CDC_CAP_LINE))
512 usb_autopm_put_interface(acm->control);
515 * Unthrottle device in case the TTY was closed while throttled.
517 spin_lock_irq(&acm->read_lock);
519 acm->throttle_req = 0;
520 spin_unlock_irq(&acm->read_lock);
522 if (acm_submit_read_urbs(acm, GFP_KERNEL))
525 set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
526 rv = tty_port_block_til_ready(&acm->port, tty, filp);
528 mutex_unlock(&acm->mutex);
530 mutex_unlock(&open_mutex);
535 mutex_unlock(&acm->mutex);
536 usb_autopm_put_interface(acm->control);
538 mutex_unlock(&open_mutex);
539 tty_port_tty_set(&acm->port, NULL);
543 static void acm_tty_unregister(struct acm *acm)
547 tty_unregister_device(acm_tty_driver, acm->minor);
548 usb_put_intf(acm->control);
549 acm_table[acm->minor] = NULL;
550 usb_free_urb(acm->ctrlurb);
551 for (i = 0; i < ACM_NW; i++)
552 usb_free_urb(acm->wb[i].urb);
553 for (i = 0; i < acm->rx_buflimit; i++)
554 usb_free_urb(acm->read_urbs[i]);
555 kfree(acm->country_codes);
559 static void acm_port_down(struct acm *acm)
566 usb_autopm_get_interface(acm->control);
567 acm_set_control(acm, acm->ctrlout = 0);
570 urb = usb_get_from_anchor(&acm->delayed);
575 usb_autopm_put_interface_async(acm->control);
578 usb_kill_urb(acm->ctrlurb);
579 for (i = 0; i < ACM_NW; i++)
580 usb_kill_urb(acm->wb[i].urb);
581 for (i = 0; i < acm->rx_buflimit; i++)
582 usb_kill_urb(acm->read_urbs[i]);
583 acm->control->needs_remote_wakeup = 0;
584 usb_autopm_put_interface(acm->control);
588 static void acm_tty_hangup(struct tty_struct *tty)
592 mutex_lock(&open_mutex);
593 acm = tty->driver_data;
598 tty_port_hangup(&acm->port);
602 mutex_unlock(&open_mutex);
605 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
607 struct acm *acm = tty->driver_data;
609 /* Perform the closing process and see if we need to do the hardware
614 mutex_lock(&open_mutex);
615 if (tty_port_close_start(&acm->port, tty, filp) == 0) {
617 tty_port_tty_set(&acm->port, NULL);
618 acm_tty_unregister(acm);
619 tty->driver_data = NULL;
621 mutex_unlock(&open_mutex);
625 tty_port_close_end(&acm->port, tty);
626 tty_port_tty_set(&acm->port, NULL);
627 mutex_unlock(&open_mutex);
630 static int acm_tty_write(struct tty_struct *tty,
631 const unsigned char *buf, int count)
633 struct acm *acm = tty->driver_data;
644 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
646 spin_lock_irqsave(&acm->write_lock, flags);
647 wbn = acm_wb_alloc(acm);
649 spin_unlock_irqrestore(&acm->write_lock, flags);
654 count = (count > acm->writesize) ? acm->writesize : count;
655 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
656 memcpy(wb->buf, buf, count);
658 spin_unlock_irqrestore(&acm->write_lock, flags);
660 stat = acm_write_start(acm, wbn);
666 static int acm_tty_write_room(struct tty_struct *tty)
668 struct acm *acm = tty->driver_data;
672 * Do not let the line discipline to know that we have a reserve,
673 * or it might get too enthusiastic.
675 return acm_wb_is_avail(acm) ? acm->writesize : 0;
678 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
680 struct acm *acm = tty->driver_data;
684 * This is inaccurate (overcounts), but it works.
686 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
689 static void acm_tty_throttle(struct tty_struct *tty)
691 struct acm *acm = tty->driver_data;
696 spin_lock_irq(&acm->read_lock);
697 acm->throttle_req = 1;
698 spin_unlock_irq(&acm->read_lock);
701 static void acm_tty_unthrottle(struct tty_struct *tty)
703 struct acm *acm = tty->driver_data;
704 unsigned int was_throttled;
709 spin_lock_irq(&acm->read_lock);
710 was_throttled = acm->throttled;
712 acm->throttle_req = 0;
713 spin_unlock_irq(&acm->read_lock);
716 acm_submit_read_urbs(acm, GFP_KERNEL);
719 static int acm_tty_break_ctl(struct tty_struct *tty, int state)
721 struct acm *acm = tty->driver_data;
725 retval = acm_send_break(acm, state ? 0xffff : 0);
727 dev_dbg(&acm->control->dev, "%s - send break failed\n",
732 static int acm_tty_tiocmget(struct tty_struct *tty)
734 struct acm *acm = tty->driver_data;
739 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
740 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
741 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
742 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
743 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
747 static int acm_tty_tiocmset(struct tty_struct *tty,
748 unsigned int set, unsigned int clear)
750 struct acm *acm = tty->driver_data;
751 unsigned int newctrl;
756 newctrl = acm->ctrlout;
757 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
758 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
759 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
760 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
762 newctrl = (newctrl & ~clear) | set;
764 if (acm->ctrlout == newctrl)
766 return acm_set_control(acm, acm->ctrlout = newctrl);
769 static int acm_tty_ioctl(struct tty_struct *tty,
770 unsigned int cmd, unsigned long arg)
772 struct acm *acm = tty->driver_data;
780 static const __u32 acm_tty_speed[] = {
781 0, 50, 75, 110, 134, 150, 200, 300, 600,
782 1200, 1800, 2400, 4800, 9600, 19200, 38400,
783 57600, 115200, 230400, 460800, 500000, 576000,
784 921600, 1000000, 1152000, 1500000, 2000000,
785 2500000, 3000000, 3500000, 4000000
788 static void acm_tty_set_termios(struct tty_struct *tty,
789 struct ktermios *termios_old)
791 struct acm *acm = tty->driver_data;
792 struct ktermios *termios = tty->termios;
793 struct usb_cdc_line_coding newline;
794 int newctrl = acm->ctrlout;
799 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
800 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
801 newline.bParityType = termios->c_cflag & PARENB ?
802 (termios->c_cflag & PARODD ? 1 : 2) +
803 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
804 switch (termios->c_cflag & CSIZE) {
806 newline.bDataBits = 5;
809 newline.bDataBits = 6;
812 newline.bDataBits = 7;
816 newline.bDataBits = 8;
819 /* FIXME: Needs to clear unsupported bits in the termios */
820 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
822 if (!newline.dwDTERate) {
823 newline.dwDTERate = acm->line.dwDTERate;
824 newctrl &= ~ACM_CTRL_DTR;
826 newctrl |= ACM_CTRL_DTR;
828 if (newctrl != acm->ctrlout)
829 acm_set_control(acm, acm->ctrlout = newctrl);
831 if (memcmp(&acm->line, &newline, sizeof newline)) {
832 memcpy(&acm->line, &newline, sizeof newline);
833 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
835 le32_to_cpu(newline.dwDTERate),
836 newline.bCharFormat, newline.bParityType,
838 acm_set_line(acm, &acm->line);
843 * USB probe and disconnect routines.
846 /* Little helpers: write/read buffers free */
847 static void acm_write_buffers_free(struct acm *acm)
851 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
853 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
854 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
857 static void acm_read_buffers_free(struct acm *acm)
859 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
862 for (i = 0; i < acm->rx_buflimit; i++)
863 usb_free_coherent(usb_dev, acm->readsize,
864 acm->read_buffers[i].base, acm->read_buffers[i].dma);
867 /* Little helper: write buffers allocate */
868 static int acm_write_buffers_alloc(struct acm *acm)
873 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
874 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
880 usb_free_coherent(acm->dev, acm->writesize,
889 static int acm_probe(struct usb_interface *intf,
890 const struct usb_device_id *id)
892 struct usb_cdc_union_desc *union_header = NULL;
893 struct usb_cdc_country_functional_desc *cfd = NULL;
894 unsigned char *buffer = intf->altsetting->extra;
895 int buflen = intf->altsetting->extralen;
896 struct usb_interface *control_interface;
897 struct usb_interface *data_interface;
898 struct usb_endpoint_descriptor *epctrl = NULL;
899 struct usb_endpoint_descriptor *epread = NULL;
900 struct usb_endpoint_descriptor *epwrite = NULL;
901 struct usb_device *usb_dev = interface_to_usbdev(intf);
904 int ctrlsize, readsize;
906 u8 ac_management_function = 0;
907 u8 call_management_function = 0;
908 int call_interface_num = -1;
909 int data_interface_num = -1;
910 unsigned long quirks;
913 int combined_interfaces = 0;
916 quirks = (unsigned long)id->driver_info;
917 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
919 /* handle quirks deadly to normal probing*/
920 if (quirks == NO_UNION_NORMAL) {
921 data_interface = usb_ifnum_to_if(usb_dev, 1);
922 control_interface = usb_ifnum_to_if(usb_dev, 0);
923 goto skip_normal_probe;
928 dev_err(&intf->dev, "Weird descriptor references\n");
933 if (intf->cur_altsetting->endpoint &&
934 intf->cur_altsetting->endpoint->extralen &&
935 intf->cur_altsetting->endpoint->extra) {
937 "Seeking extra descriptors on endpoint\n");
938 buflen = intf->cur_altsetting->endpoint->extralen;
939 buffer = intf->cur_altsetting->endpoint->extra;
942 "Zero length descriptor references\n");
948 if (buffer[1] != USB_DT_CS_INTERFACE) {
949 dev_err(&intf->dev, "skipping garbage\n");
954 case USB_CDC_UNION_TYPE: /* we've found it */
956 dev_err(&intf->dev, "More than one "
957 "union descriptor, skipping ...\n");
960 union_header = (struct usb_cdc_union_desc *)buffer;
962 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
963 cfd = (struct usb_cdc_country_functional_desc *)buffer;
965 case USB_CDC_HEADER_TYPE: /* maybe check version */
966 break; /* for now we ignore it */
967 case USB_CDC_ACM_TYPE:
968 ac_management_function = buffer[3];
970 case USB_CDC_CALL_MANAGEMENT_TYPE:
971 call_management_function = buffer[3];
972 call_interface_num = buffer[4];
973 if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
974 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
977 /* there are LOTS more CDC descriptors that
978 * could legitimately be found here.
980 dev_dbg(&intf->dev, "Ignoring descriptor: "
981 "type %02x, length %d\n",
982 buffer[2], buffer[0]);
991 if (call_interface_num > 0) {
992 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
993 /* quirks for Droids MuIn LCD */
994 if (quirks & NO_DATA_INTERFACE)
995 data_interface = usb_ifnum_to_if(usb_dev, 0);
997 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
998 control_interface = intf;
1000 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1001 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1004 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1005 combined_interfaces = 1;
1006 control_interface = data_interface = intf;
1007 goto look_for_collapsed_interface;
1011 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1012 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1013 if (!control_interface || !data_interface) {
1014 dev_dbg(&intf->dev, "no interfaces\n");
1019 if (data_interface_num != call_interface_num)
1020 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1022 if (control_interface == data_interface) {
1023 /* some broken devices designed for windows work this way */
1024 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1025 combined_interfaces = 1;
1026 /* a popular other OS doesn't use it */
1027 quirks |= NO_CAP_LINE;
1028 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1029 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1032 look_for_collapsed_interface:
1033 for (i = 0; i < 3; i++) {
1034 struct usb_endpoint_descriptor *ep;
1035 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1037 if (usb_endpoint_is_int_in(ep))
1039 else if (usb_endpoint_is_bulk_out(ep))
1041 else if (usb_endpoint_is_bulk_in(ep))
1046 if (!epctrl || !epread || !epwrite)
1049 goto made_compressed_probe;
1054 /*workaround for switched interfaces */
1055 if (data_interface->cur_altsetting->desc.bInterfaceClass
1056 != CDC_DATA_INTERFACE_TYPE) {
1057 if (control_interface->cur_altsetting->desc.bInterfaceClass
1058 == CDC_DATA_INTERFACE_TYPE) {
1059 struct usb_interface *t;
1061 "Your device has switched interfaces.\n");
1062 t = control_interface;
1063 control_interface = data_interface;
1070 /* Accept probe requests only for the control interface */
1071 if (!combined_interfaces && intf != control_interface)
1074 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1075 /* valid in this context */
1076 dev_dbg(&intf->dev, "The data interface isn't available\n");
1081 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1082 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
1085 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1086 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1087 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1090 /* workaround for switched endpoints */
1091 if (!usb_endpoint_dir_in(epread)) {
1092 /* descriptors are swapped */
1093 struct usb_endpoint_descriptor *t;
1095 "The data interface has switched endpoints\n");
1100 made_compressed_probe:
1101 dev_dbg(&intf->dev, "interfaces are valid\n");
1102 for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
1104 if (minor == ACM_TTY_MINORS) {
1105 dev_err(&intf->dev, "no more free acm devices\n");
1109 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1111 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1115 ctrlsize = usb_endpoint_maxp(epctrl);
1116 readsize = usb_endpoint_maxp(epread) *
1117 (quirks == SINGLE_RX_URB ? 1 : 2);
1118 acm->combined_interfaces = combined_interfaces;
1119 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1120 acm->control = control_interface;
1121 acm->data = data_interface;
1124 acm->ctrl_caps = ac_management_function;
1125 if (quirks & NO_CAP_LINE)
1126 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1127 acm->ctrlsize = ctrlsize;
1128 acm->readsize = readsize;
1129 acm->rx_buflimit = num_rx_buf;
1130 INIT_WORK(&acm->work, acm_softint);
1131 spin_lock_init(&acm->write_lock);
1132 spin_lock_init(&acm->read_lock);
1133 mutex_init(&acm->mutex);
1134 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1135 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1137 acm->bInterval = epread->bInterval;
1138 tty_port_init(&acm->port);
1139 acm->port.ops = &acm_port_ops;
1140 init_usb_anchor(&acm->delayed);
1142 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1144 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1147 acm->ctrl_buffer = buf;
1149 if (acm_write_buffers_alloc(acm) < 0) {
1150 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1154 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1155 if (!acm->ctrlurb) {
1156 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1159 for (i = 0; i < num_rx_buf; i++) {
1160 struct acm_rb *rb = &(acm->read_buffers[i]);
1163 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1166 dev_err(&intf->dev, "out of memory "
1167 "(read bufs usb_alloc_coherent)\n");
1173 urb = usb_alloc_urb(0, GFP_KERNEL);
1176 "out of memory (read urbs usb_alloc_urb)\n");
1179 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1180 urb->transfer_dma = rb->dma;
1181 if (acm->is_int_ep) {
1182 usb_fill_int_urb(urb, acm->dev,
1186 acm_read_bulk_callback, rb,
1189 usb_fill_bulk_urb(urb, acm->dev,
1193 acm_read_bulk_callback, rb);
1196 acm->read_urbs[i] = urb;
1197 __set_bit(i, &acm->read_urbs_free);
1199 for (i = 0; i < ACM_NW; i++) {
1200 struct acm_wb *snd = &(acm->wb[i]);
1202 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1203 if (snd->urb == NULL) {
1205 "out of memory (write urbs usb_alloc_urb)\n");
1209 if (usb_endpoint_xfer_int(epwrite))
1210 usb_fill_int_urb(snd->urb, usb_dev,
1211 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
1212 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1214 usb_fill_bulk_urb(snd->urb, usb_dev,
1215 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1216 NULL, acm->writesize, acm_write_bulk, snd);
1217 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1218 snd->instance = acm;
1221 usb_set_intfdata(intf, acm);
1223 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1227 if (cfd) { /* export the country data */
1228 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1229 if (!acm->country_codes)
1230 goto skip_countries;
1231 acm->country_code_size = cfd->bLength - 4;
1232 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1234 acm->country_rel_date = cfd->iCountryCodeRelDate;
1236 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1238 kfree(acm->country_codes);
1239 acm->country_codes = NULL;
1240 acm->country_code_size = 0;
1241 goto skip_countries;
1244 i = device_create_file(&intf->dev,
1245 &dev_attr_iCountryCodeRelDate);
1247 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1248 kfree(acm->country_codes);
1249 acm->country_codes = NULL;
1250 acm->country_code_size = 0;
1251 goto skip_countries;
1256 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1257 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1258 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1259 /* works around buggy devices */
1260 epctrl->bInterval ? epctrl->bInterval : 0xff);
1261 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1262 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1264 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1266 acm_set_control(acm, acm->ctrlout);
1268 acm->line.dwDTERate = cpu_to_le32(9600);
1269 acm->line.bDataBits = 8;
1270 acm_set_line(acm, &acm->line);
1272 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1273 usb_set_intfdata(data_interface, acm);
1275 usb_get_intf(control_interface);
1276 tty_register_device(acm_tty_driver, minor, &control_interface->dev);
1278 acm_table[minor] = acm;
1282 for (i = 0; i < ACM_NW; i++)
1283 usb_free_urb(acm->wb[i].urb);
1285 for (i = 0; i < num_rx_buf; i++)
1286 usb_free_urb(acm->read_urbs[i]);
1287 acm_read_buffers_free(acm);
1288 usb_free_urb(acm->ctrlurb);
1290 acm_write_buffers_free(acm);
1292 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1299 static void stop_data_traffic(struct acm *acm)
1303 dev_dbg(&acm->control->dev, "%s\n", __func__);
1305 usb_kill_urb(acm->ctrlurb);
1306 for (i = 0; i < ACM_NW; i++)
1307 usb_kill_urb(acm->wb[i].urb);
1308 for (i = 0; i < acm->rx_buflimit; i++)
1309 usb_kill_urb(acm->read_urbs[i]);
1311 cancel_work_sync(&acm->work);
1314 static void acm_disconnect(struct usb_interface *intf)
1316 struct acm *acm = usb_get_intfdata(intf);
1317 struct usb_device *usb_dev = interface_to_usbdev(intf);
1318 struct tty_struct *tty;
1320 /* sibling interface is already cleaning up */
1324 mutex_lock(&open_mutex);
1325 if (acm->country_codes) {
1326 device_remove_file(&acm->control->dev,
1327 &dev_attr_wCountryCodes);
1328 device_remove_file(&acm->control->dev,
1329 &dev_attr_iCountryCodeRelDate);
1331 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1333 usb_set_intfdata(acm->control, NULL);
1334 usb_set_intfdata(acm->data, NULL);
1336 stop_data_traffic(acm);
1338 acm_write_buffers_free(acm);
1339 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer,
1341 acm_read_buffers_free(acm);
1343 if (!acm->combined_interfaces)
1344 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1345 acm->data : acm->control);
1347 if (acm->port.count == 0) {
1348 acm_tty_unregister(acm);
1349 mutex_unlock(&open_mutex);
1353 mutex_unlock(&open_mutex);
1354 tty = tty_port_tty_get(&acm->port);
1362 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1364 struct acm *acm = usb_get_intfdata(intf);
1367 spin_lock_irq(&acm->read_lock);
1368 spin_lock(&acm->write_lock);
1369 if (PMSG_IS_AUTO(message)) {
1370 if (acm->transmitting) {
1371 spin_unlock(&acm->write_lock);
1372 spin_unlock_irq(&acm->read_lock);
1376 cnt = acm->susp_count++;
1377 spin_unlock(&acm->write_lock);
1378 spin_unlock_irq(&acm->read_lock);
1383 we treat opened interfaces differently,
1384 we must guard against open
1386 mutex_lock(&acm->mutex);
1388 if (acm->port.count)
1389 stop_data_traffic(acm);
1391 mutex_unlock(&acm->mutex);
1395 static int acm_resume(struct usb_interface *intf)
1397 struct acm *acm = usb_get_intfdata(intf);
1401 mutex_lock(&acm->mutex);
1402 spin_lock_irq(&acm->read_lock);
1403 spin_lock(&acm->write_lock);
1405 if (--acm->susp_count)
1408 if (acm->port.count) {
1409 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
1412 urb = usb_get_from_anchor(&acm->delayed);
1416 acm_start_wb(acm, urb->context);
1420 * delayed error checking because we must
1421 * do the write path at all cost
1426 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
1429 spin_unlock(&acm->write_lock);
1430 spin_unlock_irq(&acm->read_lock);
1431 mutex_unlock(&acm->mutex);
1436 static int acm_reset_resume(struct usb_interface *intf)
1438 struct acm *acm = usb_get_intfdata(intf);
1439 struct tty_struct *tty;
1441 mutex_lock(&acm->mutex);
1442 if (acm->port.count) {
1443 tty = tty_port_tty_get(&acm->port);
1449 mutex_unlock(&acm->mutex);
1450 return acm_resume(intf);
1453 #endif /* CONFIG_PM */
1455 #define NOKIA_PCSUITE_ACM_INFO(x) \
1456 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1457 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1458 USB_CDC_ACM_PROTO_VENDOR)
1460 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1461 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1462 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1463 USB_CDC_ACM_PROTO_VENDOR)
1466 * USB driver structure.
1469 static const struct usb_device_id acm_ids[] = {
1470 /* quirky and broken devices */
1471 { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
1472 .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
1473 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1474 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1476 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1477 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1479 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1480 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1482 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1483 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1485 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1486 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1488 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1489 .driver_info = SINGLE_RX_URB,
1491 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1492 .driver_info = SINGLE_RX_URB, /* firmware bug */
1494 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1495 .driver_info = SINGLE_RX_URB, /* firmware bug */
1497 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1498 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1500 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1501 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1503 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1504 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1506 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1507 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1509 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1510 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1512 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1514 /* Motorola H24 HSPA module: */
1515 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
1516 { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
1517 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1519 { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
1520 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1522 { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
1523 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1525 { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
1526 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1528 { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
1529 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1531 { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
1532 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1534 { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
1535 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1538 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1539 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1540 data interface instead of
1541 communications interface.
1542 Maybe we should define a new
1545 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1546 .driver_info = NO_UNION_NORMAL,
1548 { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
1549 .driver_info = NO_UNION_NORMAL,
1551 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1552 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1554 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1555 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1558 /* Nokia S60 phones expose two ACM channels. The first is
1559 * a modem and is picked up by the standard AT-command
1560 * information below. The second is 'vendor-specific' but
1561 * is treated as a serial device at the S60 end, so we want
1562 * to expose it on Linux too. */
1563 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1564 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1565 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1566 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1567 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1568 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1569 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1570 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1571 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1572 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1573 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1574 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1575 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1576 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1577 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1578 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1579 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1580 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1581 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1582 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1583 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1584 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1585 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1586 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1587 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1588 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1589 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1590 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1591 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1592 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1593 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1594 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1595 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1596 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1597 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1598 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1599 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1600 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1601 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1602 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1603 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1604 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1605 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1606 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1607 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1608 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1609 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1610 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1611 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1612 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1613 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1614 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1615 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1616 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1617 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1618 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1619 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
1620 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1622 /* Support for Owen devices */
1623 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1625 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1627 /* Support Lego NXT using pbLua firmware */
1628 { USB_DEVICE(0x0694, 0xff00),
1629 .driver_info = NOT_A_MODEM,
1632 /* Support for Droids MuIn LCD */
1633 { USB_DEVICE(0x04d8, 0x000b),
1634 .driver_info = NO_DATA_INTERFACE,
1637 /* control interfaces without any protocol set */
1638 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1639 USB_CDC_PROTO_NONE) },
1641 /* control interfaces with various AT-command sets */
1642 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1643 USB_CDC_ACM_PROTO_AT_V25TER) },
1644 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1645 USB_CDC_ACM_PROTO_AT_PCCA101) },
1646 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1647 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1648 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1649 USB_CDC_ACM_PROTO_AT_GSM) },
1650 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1651 USB_CDC_ACM_PROTO_AT_3G) },
1652 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1653 USB_CDC_ACM_PROTO_AT_CDMA) },
1658 MODULE_DEVICE_TABLE(usb, acm_ids);
1660 static struct usb_driver acm_driver = {
1663 .disconnect = acm_disconnect,
1665 .suspend = acm_suspend,
1666 .resume = acm_resume,
1667 .reset_resume = acm_reset_resume,
1669 .id_table = acm_ids,
1671 .supports_autosuspend = 1,
1676 * TTY driver structures.
1679 static const struct tty_operations acm_ops = {
1680 .open = acm_tty_open,
1681 .close = acm_tty_close,
1682 .hangup = acm_tty_hangup,
1683 .write = acm_tty_write,
1684 .write_room = acm_tty_write_room,
1685 .ioctl = acm_tty_ioctl,
1686 .throttle = acm_tty_throttle,
1687 .unthrottle = acm_tty_unthrottle,
1688 .chars_in_buffer = acm_tty_chars_in_buffer,
1689 .break_ctl = acm_tty_break_ctl,
1690 .set_termios = acm_tty_set_termios,
1691 .tiocmget = acm_tty_tiocmget,
1692 .tiocmset = acm_tty_tiocmset,
1699 static int __init acm_init(void)
1702 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1703 if (!acm_tty_driver)
1705 acm_tty_driver->owner = THIS_MODULE,
1706 acm_tty_driver->driver_name = "acm",
1707 acm_tty_driver->name = "ttyACM",
1708 acm_tty_driver->major = ACM_TTY_MAJOR,
1709 acm_tty_driver->minor_start = 0,
1710 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1711 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1712 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1713 acm_tty_driver->init_termios = tty_std_termios;
1714 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1716 tty_set_operations(acm_tty_driver, &acm_ops);
1718 retval = tty_register_driver(acm_tty_driver);
1720 put_tty_driver(acm_tty_driver);
1724 retval = usb_register(&acm_driver);
1726 tty_unregister_driver(acm_tty_driver);
1727 put_tty_driver(acm_tty_driver);
1731 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1736 static void __exit acm_exit(void)
1738 usb_deregister(&acm_driver);
1739 tty_unregister_driver(acm_tty_driver);
1740 put_tty_driver(acm_tty_driver);
1743 module_init(acm_init);
1744 module_exit(acm_exit);
1746 MODULE_AUTHOR(DRIVER_AUTHOR);
1747 MODULE_DESCRIPTION(DRIVER_DESC);
1748 MODULE_LICENSE("GPL");
1749 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);