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 (C_BAUD(tty) == B0) {
823 newline.dwDTERate = acm->line.dwDTERate;
824 newctrl &= ~ACM_CTRL_DTR;
825 } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) {
826 newctrl |= ACM_CTRL_DTR;
829 if (newctrl != acm->ctrlout)
830 acm_set_control(acm, acm->ctrlout = newctrl);
832 if (memcmp(&acm->line, &newline, sizeof newline)) {
833 memcpy(&acm->line, &newline, sizeof newline);
834 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
836 le32_to_cpu(newline.dwDTERate),
837 newline.bCharFormat, newline.bParityType,
839 acm_set_line(acm, &acm->line);
844 * USB probe and disconnect routines.
847 /* Little helpers: write/read buffers free */
848 static void acm_write_buffers_free(struct acm *acm)
852 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
854 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
855 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
858 static void acm_read_buffers_free(struct acm *acm)
860 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
863 for (i = 0; i < acm->rx_buflimit; i++)
864 usb_free_coherent(usb_dev, acm->readsize,
865 acm->read_buffers[i].base, acm->read_buffers[i].dma);
868 /* Little helper: write buffers allocate */
869 static int acm_write_buffers_alloc(struct acm *acm)
874 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
875 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
881 usb_free_coherent(acm->dev, acm->writesize,
890 static int acm_probe(struct usb_interface *intf,
891 const struct usb_device_id *id)
893 struct usb_cdc_union_desc *union_header = NULL;
894 struct usb_cdc_country_functional_desc *cfd = NULL;
895 unsigned char *buffer = intf->altsetting->extra;
896 int buflen = intf->altsetting->extralen;
897 struct usb_interface *control_interface;
898 struct usb_interface *data_interface;
899 struct usb_endpoint_descriptor *epctrl = NULL;
900 struct usb_endpoint_descriptor *epread = NULL;
901 struct usb_endpoint_descriptor *epwrite = NULL;
902 struct usb_device *usb_dev = interface_to_usbdev(intf);
905 int ctrlsize, readsize;
907 u8 ac_management_function = 0;
908 u8 call_management_function = 0;
909 int call_interface_num = -1;
910 int data_interface_num = -1;
911 unsigned long quirks;
914 int combined_interfaces = 0;
917 quirks = (unsigned long)id->driver_info;
918 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
920 /* handle quirks deadly to normal probing*/
921 if (quirks == NO_UNION_NORMAL) {
922 data_interface = usb_ifnum_to_if(usb_dev, 1);
923 control_interface = usb_ifnum_to_if(usb_dev, 0);
924 goto skip_normal_probe;
929 dev_err(&intf->dev, "Weird descriptor references\n");
934 if (intf->cur_altsetting->endpoint &&
935 intf->cur_altsetting->endpoint->extralen &&
936 intf->cur_altsetting->endpoint->extra) {
938 "Seeking extra descriptors on endpoint\n");
939 buflen = intf->cur_altsetting->endpoint->extralen;
940 buffer = intf->cur_altsetting->endpoint->extra;
943 "Zero length descriptor references\n");
949 if (buffer[1] != USB_DT_CS_INTERFACE) {
950 dev_err(&intf->dev, "skipping garbage\n");
955 case USB_CDC_UNION_TYPE: /* we've found it */
957 dev_err(&intf->dev, "More than one "
958 "union descriptor, skipping ...\n");
961 union_header = (struct usb_cdc_union_desc *)buffer;
963 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
964 cfd = (struct usb_cdc_country_functional_desc *)buffer;
966 case USB_CDC_HEADER_TYPE: /* maybe check version */
967 break; /* for now we ignore it */
968 case USB_CDC_ACM_TYPE:
969 ac_management_function = buffer[3];
971 case USB_CDC_CALL_MANAGEMENT_TYPE:
972 call_management_function = buffer[3];
973 call_interface_num = buffer[4];
974 if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
975 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
978 /* there are LOTS more CDC descriptors that
979 * could legitimately be found here.
981 dev_dbg(&intf->dev, "Ignoring descriptor: "
982 "type %02x, length %d\n",
983 buffer[2], buffer[0]);
992 if (call_interface_num > 0) {
993 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
994 /* quirks for Droids MuIn LCD */
995 if (quirks & NO_DATA_INTERFACE)
996 data_interface = usb_ifnum_to_if(usb_dev, 0);
998 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
999 control_interface = intf;
1001 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1002 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1005 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1006 combined_interfaces = 1;
1007 control_interface = data_interface = intf;
1008 goto look_for_collapsed_interface;
1012 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1013 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1014 if (!control_interface || !data_interface) {
1015 dev_dbg(&intf->dev, "no interfaces\n");
1020 if (data_interface_num != call_interface_num)
1021 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1023 if (control_interface == data_interface) {
1024 /* some broken devices designed for windows work this way */
1025 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1026 combined_interfaces = 1;
1027 /* a popular other OS doesn't use it */
1028 quirks |= NO_CAP_LINE;
1029 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1030 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1033 look_for_collapsed_interface:
1034 for (i = 0; i < 3; i++) {
1035 struct usb_endpoint_descriptor *ep;
1036 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1038 if (usb_endpoint_is_int_in(ep))
1040 else if (usb_endpoint_is_bulk_out(ep))
1042 else if (usb_endpoint_is_bulk_in(ep))
1047 if (!epctrl || !epread || !epwrite)
1050 goto made_compressed_probe;
1055 /*workaround for switched interfaces */
1056 if (data_interface->cur_altsetting->desc.bInterfaceClass
1057 != CDC_DATA_INTERFACE_TYPE) {
1058 if (control_interface->cur_altsetting->desc.bInterfaceClass
1059 == CDC_DATA_INTERFACE_TYPE) {
1060 struct usb_interface *t;
1062 "Your device has switched interfaces.\n");
1063 t = control_interface;
1064 control_interface = data_interface;
1071 /* Accept probe requests only for the control interface */
1072 if (!combined_interfaces && intf != control_interface)
1075 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1076 /* valid in this context */
1077 dev_dbg(&intf->dev, "The data interface isn't available\n");
1082 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1083 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
1086 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1087 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1088 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1091 /* workaround for switched endpoints */
1092 if (!usb_endpoint_dir_in(epread)) {
1093 /* descriptors are swapped */
1094 struct usb_endpoint_descriptor *t;
1096 "The data interface has switched endpoints\n");
1101 made_compressed_probe:
1102 dev_dbg(&intf->dev, "interfaces are valid\n");
1103 for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
1105 if (minor == ACM_TTY_MINORS) {
1106 dev_err(&intf->dev, "no more free acm devices\n");
1110 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1112 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1116 ctrlsize = usb_endpoint_maxp(epctrl);
1117 readsize = usb_endpoint_maxp(epread) *
1118 (quirks == SINGLE_RX_URB ? 1 : 2);
1119 acm->combined_interfaces = combined_interfaces;
1120 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1121 acm->control = control_interface;
1122 acm->data = data_interface;
1125 acm->ctrl_caps = ac_management_function;
1126 if (quirks & NO_CAP_LINE)
1127 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1128 acm->ctrlsize = ctrlsize;
1129 acm->readsize = readsize;
1130 acm->rx_buflimit = num_rx_buf;
1131 INIT_WORK(&acm->work, acm_softint);
1132 spin_lock_init(&acm->write_lock);
1133 spin_lock_init(&acm->read_lock);
1134 mutex_init(&acm->mutex);
1135 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1136 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1138 acm->bInterval = epread->bInterval;
1139 tty_port_init(&acm->port);
1140 acm->port.ops = &acm_port_ops;
1141 init_usb_anchor(&acm->delayed);
1143 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1145 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1148 acm->ctrl_buffer = buf;
1150 if (acm_write_buffers_alloc(acm) < 0) {
1151 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1155 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1156 if (!acm->ctrlurb) {
1157 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1160 for (i = 0; i < num_rx_buf; i++) {
1161 struct acm_rb *rb = &(acm->read_buffers[i]);
1164 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1167 dev_err(&intf->dev, "out of memory "
1168 "(read bufs usb_alloc_coherent)\n");
1174 urb = usb_alloc_urb(0, GFP_KERNEL);
1177 "out of memory (read urbs usb_alloc_urb)\n");
1180 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1181 urb->transfer_dma = rb->dma;
1182 if (acm->is_int_ep) {
1183 usb_fill_int_urb(urb, acm->dev,
1187 acm_read_bulk_callback, rb,
1190 usb_fill_bulk_urb(urb, acm->dev,
1194 acm_read_bulk_callback, rb);
1197 acm->read_urbs[i] = urb;
1198 __set_bit(i, &acm->read_urbs_free);
1200 for (i = 0; i < ACM_NW; i++) {
1201 struct acm_wb *snd = &(acm->wb[i]);
1203 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1204 if (snd->urb == NULL) {
1206 "out of memory (write urbs usb_alloc_urb)\n");
1210 if (usb_endpoint_xfer_int(epwrite))
1211 usb_fill_int_urb(snd->urb, usb_dev,
1212 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
1213 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1215 usb_fill_bulk_urb(snd->urb, usb_dev,
1216 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1217 NULL, acm->writesize, acm_write_bulk, snd);
1218 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1219 snd->instance = acm;
1222 usb_set_intfdata(intf, acm);
1224 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1228 if (cfd) { /* export the country data */
1229 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1230 if (!acm->country_codes)
1231 goto skip_countries;
1232 acm->country_code_size = cfd->bLength - 4;
1233 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1235 acm->country_rel_date = cfd->iCountryCodeRelDate;
1237 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1239 kfree(acm->country_codes);
1240 acm->country_codes = NULL;
1241 acm->country_code_size = 0;
1242 goto skip_countries;
1245 i = device_create_file(&intf->dev,
1246 &dev_attr_iCountryCodeRelDate);
1248 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1249 kfree(acm->country_codes);
1250 acm->country_codes = NULL;
1251 acm->country_code_size = 0;
1252 goto skip_countries;
1257 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1258 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1259 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1260 /* works around buggy devices */
1261 epctrl->bInterval ? epctrl->bInterval : 0xff);
1262 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1263 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1265 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1267 acm_set_control(acm, acm->ctrlout);
1269 acm->line.dwDTERate = cpu_to_le32(9600);
1270 acm->line.bDataBits = 8;
1271 acm_set_line(acm, &acm->line);
1273 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1274 usb_set_intfdata(data_interface, acm);
1276 usb_get_intf(control_interface);
1277 tty_register_device(acm_tty_driver, minor, &control_interface->dev);
1279 acm_table[minor] = acm;
1283 for (i = 0; i < ACM_NW; i++)
1284 usb_free_urb(acm->wb[i].urb);
1286 for (i = 0; i < num_rx_buf; i++)
1287 usb_free_urb(acm->read_urbs[i]);
1288 acm_read_buffers_free(acm);
1289 usb_free_urb(acm->ctrlurb);
1291 acm_write_buffers_free(acm);
1293 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1300 static void stop_data_traffic(struct acm *acm)
1304 dev_dbg(&acm->control->dev, "%s\n", __func__);
1306 usb_kill_urb(acm->ctrlurb);
1307 for (i = 0; i < ACM_NW; i++)
1308 usb_kill_urb(acm->wb[i].urb);
1309 for (i = 0; i < acm->rx_buflimit; i++)
1310 usb_kill_urb(acm->read_urbs[i]);
1312 cancel_work_sync(&acm->work);
1315 static void acm_disconnect(struct usb_interface *intf)
1317 struct acm *acm = usb_get_intfdata(intf);
1318 struct usb_device *usb_dev = interface_to_usbdev(intf);
1319 struct tty_struct *tty;
1321 /* sibling interface is already cleaning up */
1325 mutex_lock(&open_mutex);
1326 if (acm->country_codes) {
1327 device_remove_file(&acm->control->dev,
1328 &dev_attr_wCountryCodes);
1329 device_remove_file(&acm->control->dev,
1330 &dev_attr_iCountryCodeRelDate);
1332 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1334 usb_set_intfdata(acm->control, NULL);
1335 usb_set_intfdata(acm->data, NULL);
1337 stop_data_traffic(acm);
1339 acm_write_buffers_free(acm);
1340 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer,
1342 acm_read_buffers_free(acm);
1344 if (!acm->combined_interfaces)
1345 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1346 acm->data : acm->control);
1348 if (acm->port.count == 0) {
1349 acm_tty_unregister(acm);
1350 mutex_unlock(&open_mutex);
1354 mutex_unlock(&open_mutex);
1355 tty = tty_port_tty_get(&acm->port);
1363 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1365 struct acm *acm = usb_get_intfdata(intf);
1368 spin_lock_irq(&acm->read_lock);
1369 spin_lock(&acm->write_lock);
1370 if (PMSG_IS_AUTO(message)) {
1371 if (acm->transmitting) {
1372 spin_unlock(&acm->write_lock);
1373 spin_unlock_irq(&acm->read_lock);
1377 cnt = acm->susp_count++;
1378 spin_unlock(&acm->write_lock);
1379 spin_unlock_irq(&acm->read_lock);
1384 we treat opened interfaces differently,
1385 we must guard against open
1387 mutex_lock(&acm->mutex);
1389 if (acm->port.count)
1390 stop_data_traffic(acm);
1392 mutex_unlock(&acm->mutex);
1396 static int acm_resume(struct usb_interface *intf)
1398 struct acm *acm = usb_get_intfdata(intf);
1402 mutex_lock(&acm->mutex);
1403 spin_lock_irq(&acm->read_lock);
1404 spin_lock(&acm->write_lock);
1406 if (--acm->susp_count)
1409 if (acm->port.count) {
1410 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
1413 urb = usb_get_from_anchor(&acm->delayed);
1417 acm_start_wb(acm, urb->context);
1421 * delayed error checking because we must
1422 * do the write path at all cost
1427 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
1430 spin_unlock(&acm->write_lock);
1431 spin_unlock_irq(&acm->read_lock);
1432 mutex_unlock(&acm->mutex);
1437 static int acm_reset_resume(struct usb_interface *intf)
1439 struct acm *acm = usb_get_intfdata(intf);
1440 struct tty_struct *tty;
1442 mutex_lock(&acm->mutex);
1443 if (acm->port.count) {
1444 tty = tty_port_tty_get(&acm->port);
1450 mutex_unlock(&acm->mutex);
1451 return acm_resume(intf);
1454 #endif /* CONFIG_PM */
1456 #define NOKIA_PCSUITE_ACM_INFO(x) \
1457 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1458 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1459 USB_CDC_ACM_PROTO_VENDOR)
1461 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1462 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1463 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1464 USB_CDC_ACM_PROTO_VENDOR)
1467 * USB driver structure.
1470 static const struct usb_device_id acm_ids[] = {
1471 /* quirky and broken devices */
1472 { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
1473 .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
1474 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1475 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1477 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1478 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1480 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1481 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1483 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1484 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1486 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1487 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1489 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1490 .driver_info = SINGLE_RX_URB,
1492 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1493 .driver_info = SINGLE_RX_URB, /* firmware bug */
1495 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1496 .driver_info = SINGLE_RX_URB, /* firmware bug */
1498 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1499 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1501 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1502 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1504 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1505 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1507 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1508 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1510 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1511 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1513 { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
1514 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1516 /* Motorola H24 HSPA module: */
1517 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
1518 { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
1519 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1521 { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
1522 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1524 { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
1525 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1527 { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
1528 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1530 { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
1531 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1533 { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
1534 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1536 { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
1537 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1540 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1541 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1542 data interface instead of
1543 communications interface.
1544 Maybe we should define a new
1547 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1548 .driver_info = NO_UNION_NORMAL,
1550 { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
1551 .driver_info = NO_UNION_NORMAL,
1553 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1554 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1556 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1557 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1560 /* Nokia S60 phones expose two ACM channels. The first is
1561 * a modem and is picked up by the standard AT-command
1562 * information below. The second is 'vendor-specific' but
1563 * is treated as a serial device at the S60 end, so we want
1564 * to expose it on Linux too. */
1565 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1566 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1567 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1568 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1569 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1570 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1571 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1572 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1573 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1574 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1575 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1576 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1577 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1578 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1579 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1580 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1581 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1582 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1583 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1584 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1585 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1586 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1587 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1588 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1589 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1590 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1591 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1592 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1593 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1594 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1595 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1596 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1597 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1598 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1599 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1600 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1601 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1602 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1603 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1604 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1605 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1606 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1607 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1608 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1609 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1610 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1611 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1612 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1613 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1614 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1615 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1616 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1617 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1618 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1619 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1620 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1621 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
1622 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1624 /* Support for Owen devices */
1625 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1627 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1629 /* Support Lego NXT using pbLua firmware */
1630 { USB_DEVICE(0x0694, 0xff00),
1631 .driver_info = NOT_A_MODEM,
1634 /* Support for Droids MuIn LCD */
1635 { USB_DEVICE(0x04d8, 0x000b),
1636 .driver_info = NO_DATA_INTERFACE,
1639 /* control interfaces without any protocol set */
1640 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1641 USB_CDC_PROTO_NONE) },
1643 /* control interfaces with various AT-command sets */
1644 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1645 USB_CDC_ACM_PROTO_AT_V25TER) },
1646 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1647 USB_CDC_ACM_PROTO_AT_PCCA101) },
1648 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1649 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1650 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1651 USB_CDC_ACM_PROTO_AT_GSM) },
1652 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1653 USB_CDC_ACM_PROTO_AT_3G) },
1654 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1655 USB_CDC_ACM_PROTO_AT_CDMA) },
1660 MODULE_DEVICE_TABLE(usb, acm_ids);
1662 static struct usb_driver acm_driver = {
1665 .disconnect = acm_disconnect,
1667 .suspend = acm_suspend,
1668 .resume = acm_resume,
1669 .reset_resume = acm_reset_resume,
1671 .id_table = acm_ids,
1673 .supports_autosuspend = 1,
1678 * TTY driver structures.
1681 static const struct tty_operations acm_ops = {
1682 .open = acm_tty_open,
1683 .close = acm_tty_close,
1684 .hangup = acm_tty_hangup,
1685 .write = acm_tty_write,
1686 .write_room = acm_tty_write_room,
1687 .ioctl = acm_tty_ioctl,
1688 .throttle = acm_tty_throttle,
1689 .unthrottle = acm_tty_unthrottle,
1690 .chars_in_buffer = acm_tty_chars_in_buffer,
1691 .break_ctl = acm_tty_break_ctl,
1692 .set_termios = acm_tty_set_termios,
1693 .tiocmget = acm_tty_tiocmget,
1694 .tiocmset = acm_tty_tiocmset,
1701 static int __init acm_init(void)
1704 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1705 if (!acm_tty_driver)
1707 acm_tty_driver->owner = THIS_MODULE,
1708 acm_tty_driver->driver_name = "acm",
1709 acm_tty_driver->name = "ttyACM",
1710 acm_tty_driver->major = ACM_TTY_MAJOR,
1711 acm_tty_driver->minor_start = 0,
1712 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1713 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1714 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1715 acm_tty_driver->init_termios = tty_std_termios;
1716 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1718 tty_set_operations(acm_tty_driver, &acm_ops);
1720 retval = tty_register_driver(acm_tty_driver);
1722 put_tty_driver(acm_tty_driver);
1726 retval = usb_register(&acm_driver);
1728 tty_unregister_driver(acm_tty_driver);
1729 put_tty_driver(acm_tty_driver);
1733 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1738 static void __exit acm_exit(void)
1740 usb_deregister(&acm_driver);
1741 tty_unregister_driver(acm_tty_driver);
1742 put_tty_driver(acm_tty_driver);
1745 module_init(acm_init);
1746 module_exit(acm_exit);
1748 MODULE_AUTHOR(DRIVER_AUTHOR);
1749 MODULE_DESCRIPTION(DRIVER_DESC);
1750 MODULE_LICENSE("GPL");
1751 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);