4 * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
5 * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz>
6 * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com>
7 * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name>
9 * Copyright (c) 2005 David Kubicek <dave@awk.cz>
10 * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com>
12 * USB Abstract Control Model driver for USB modems and ISDN adapters
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 #include <linux/kernel.h>
35 #include <linux/errno.h>
36 #include <linux/init.h>
37 #include <linux/slab.h>
38 #include <linux/tty.h>
39 #include <linux/serial.h>
40 #include <linux/tty_driver.h>
41 #include <linux/tty_flip.h>
42 #include <linux/module.h>
43 #include <linux/mutex.h>
44 #include <linux/uaccess.h>
45 #include <linux/usb.h>
46 #include <linux/usb/cdc.h>
47 #include <asm/byteorder.h>
48 #include <asm/unaligned.h>
49 #include <linux/list.h>
54 #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
55 #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
57 static struct usb_driver acm_driver;
58 static struct tty_driver *acm_tty_driver;
59 static struct acm *acm_table[ACM_TTY_MINORS];
61 static DEFINE_MUTEX(acm_table_lock);
68 * Look up an ACM structure by index. If found and not disconnected, increment
69 * its refcount and return it with its mutex held.
71 static struct acm *acm_get_by_index(unsigned index)
75 mutex_lock(&acm_table_lock);
76 acm = acm_table[index];
78 mutex_lock(&acm->mutex);
79 if (acm->disconnected) {
80 mutex_unlock(&acm->mutex);
83 tty_port_get(&acm->port);
84 mutex_unlock(&acm->mutex);
87 mutex_unlock(&acm_table_lock);
92 * Try to find an available minor number and if found, associate it with 'acm'.
94 static int acm_alloc_minor(struct acm *acm)
98 mutex_lock(&acm_table_lock);
99 for (minor = 0; minor < ACM_TTY_MINORS; minor++) {
100 if (!acm_table[minor]) {
101 acm_table[minor] = acm;
105 mutex_unlock(&acm_table_lock);
110 /* Release the minor number associated with 'acm'. */
111 static void acm_release_minor(struct acm *acm)
113 mutex_lock(&acm_table_lock);
114 acm_table[acm->minor] = NULL;
115 mutex_unlock(&acm_table_lock);
119 * Functions for ACM control messages.
122 static int acm_ctrl_msg(struct acm *acm, int request, int value,
125 int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
126 request, USB_RT_ACM, value,
127 acm->control->altsetting[0].desc.bInterfaceNumber,
129 dev_dbg(&acm->control->dev,
130 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
131 __func__, request, value, len, retval);
132 return retval < 0 ? retval : 0;
135 /* devices aren't required to support these requests.
136 * the cdc acm descriptor tells whether they do...
138 #define acm_set_control(acm, control) \
139 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
140 #define acm_set_line(acm, line) \
141 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
142 #define acm_send_break(acm, ms) \
143 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
146 * Write buffer management.
147 * All of these assume proper locks taken by the caller.
150 static int acm_wb_alloc(struct acm *acm)
163 wbn = (wbn + 1) % ACM_NW;
169 static int acm_wb_is_avail(struct acm *acm)
175 spin_lock_irqsave(&acm->write_lock, flags);
176 for (i = 0; i < ACM_NW; i++)
178 spin_unlock_irqrestore(&acm->write_lock, flags);
183 * Finish write. Caller must hold acm->write_lock
185 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
189 usb_autopm_put_interface_async(acm->control);
195 * the caller is responsible for locking
198 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
204 wb->urb->transfer_buffer = wb->buf;
205 wb->urb->transfer_dma = wb->dmah;
206 wb->urb->transfer_buffer_length = wb->len;
207 wb->urb->dev = acm->dev;
209 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
211 dev_err(&acm->data->dev,
212 "%s - usb_submit_urb(write bulk) failed: %d\n",
214 acm_write_done(acm, wb);
219 static int acm_write_start(struct acm *acm, int wbn)
222 struct acm_wb *wb = &acm->wb[wbn];
225 spin_lock_irqsave(&acm->write_lock, flags);
228 spin_unlock_irqrestore(&acm->write_lock, flags);
232 dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
234 usb_autopm_get_interface_async(acm->control);
235 if (acm->susp_count) {
236 if (!acm->delayed_wb)
237 acm->delayed_wb = wb;
239 usb_autopm_put_interface_async(acm->control);
240 spin_unlock_irqrestore(&acm->write_lock, flags);
241 return 0; /* A white lie */
243 usb_mark_last_busy(acm->dev);
245 rc = acm_start_wb(acm, wb);
246 spin_unlock_irqrestore(&acm->write_lock, flags);
252 * attributes exported through sysfs
254 static ssize_t show_caps
255 (struct device *dev, struct device_attribute *attr, char *buf)
257 struct usb_interface *intf = to_usb_interface(dev);
258 struct acm *acm = usb_get_intfdata(intf);
260 return sprintf(buf, "%d", acm->ctrl_caps);
262 static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
264 static ssize_t show_country_codes
265 (struct device *dev, struct device_attribute *attr, char *buf)
267 struct usb_interface *intf = to_usb_interface(dev);
268 struct acm *acm = usb_get_intfdata(intf);
270 memcpy(buf, acm->country_codes, acm->country_code_size);
271 return acm->country_code_size;
274 static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
276 static ssize_t show_country_rel_date
277 (struct device *dev, struct device_attribute *attr, char *buf)
279 struct usb_interface *intf = to_usb_interface(dev);
280 struct acm *acm = usb_get_intfdata(intf);
282 return sprintf(buf, "%d", acm->country_rel_date);
285 static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
287 * Interrupt handlers for various ACM device responses
290 /* control interface reports status changes with "interrupt" transfers */
291 static void acm_ctrl_irq(struct urb *urb)
293 struct acm *acm = urb->context;
294 struct usb_cdc_notification *dr = urb->transfer_buffer;
295 struct tty_struct *tty;
299 int status = urb->status;
308 /* this urb is terminated, clean up */
309 dev_dbg(&acm->control->dev,
310 "%s - urb shutting down with status: %d\n",
314 dev_dbg(&acm->control->dev,
315 "%s - nonzero urb status received: %d\n",
320 usb_mark_last_busy(acm->dev);
322 data = (unsigned char *)(dr + 1);
323 switch (dr->bNotificationType) {
324 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
325 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
326 __func__, dr->wValue);
329 case USB_CDC_NOTIFY_SERIAL_STATE:
330 tty = tty_port_tty_get(&acm->port);
331 newctrl = get_unaligned_le16(data);
335 (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
336 dev_dbg(&acm->control->dev,
337 "%s - calling hangup\n", __func__);
343 acm->ctrlin = newctrl;
345 dev_dbg(&acm->control->dev,
346 "%s - input control lines: dcd%c dsr%c break%c "
347 "ring%c framing%c parity%c overrun%c\n",
349 acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
350 acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
351 acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
352 acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
353 acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
354 acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
355 acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
359 dev_dbg(&acm->control->dev,
360 "%s - unknown notification %d received: index %d "
361 "len %d data0 %d data1 %d\n",
363 dr->bNotificationType, dr->wIndex,
364 dr->wLength, data[0], data[1]);
368 retval = usb_submit_urb(urb, GFP_ATOMIC);
370 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
374 static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
378 if (!test_and_clear_bit(index, &acm->read_urbs_free))
381 dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
383 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
386 dev_err(&acm->data->dev,
387 "%s - usb_submit_urb failed: %d\n",
390 set_bit(index, &acm->read_urbs_free);
397 static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
402 for (i = 0; i < acm->rx_buflimit; ++i) {
403 res = acm_submit_read_urb(acm, i, mem_flags);
411 static void acm_process_read_urb(struct acm *acm, struct urb *urb)
413 struct tty_struct *tty;
415 if (!urb->actual_length)
418 tty = tty_port_tty_get(&acm->port);
422 tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
423 tty_flip_buffer_push(tty);
428 static void acm_read_bulk_callback(struct urb *urb)
430 struct acm_rb *rb = urb->context;
431 struct acm *acm = rb->instance;
434 dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
435 rb->index, urb->actual_length);
436 set_bit(rb->index, &acm->read_urbs_free);
439 dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
442 usb_mark_last_busy(acm->dev);
445 dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
446 __func__, urb->status);
449 acm_process_read_urb(acm, urb);
451 /* throttle device if requested by tty */
452 spin_lock_irqsave(&acm->read_lock, flags);
453 acm->throttled = acm->throttle_req;
454 if (!acm->throttled && !acm->susp_count) {
455 spin_unlock_irqrestore(&acm->read_lock, flags);
456 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
458 spin_unlock_irqrestore(&acm->read_lock, flags);
462 /* data interface wrote those outgoing bytes */
463 static void acm_write_bulk(struct urb *urb)
465 struct acm_wb *wb = urb->context;
466 struct acm *acm = wb->instance;
469 if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
470 dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
473 urb->transfer_buffer_length,
476 spin_lock_irqsave(&acm->write_lock, flags);
477 acm_write_done(acm, wb);
478 spin_unlock_irqrestore(&acm->write_lock, flags);
479 schedule_work(&acm->work);
482 static void acm_softint(struct work_struct *work)
484 struct acm *acm = container_of(work, struct acm, work);
485 struct tty_struct *tty;
487 dev_vdbg(&acm->data->dev, "%s\n", __func__);
489 tty = tty_port_tty_get(&acm->port);
500 static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
505 dev_dbg(tty->dev, "%s\n", __func__);
507 acm = acm_get_by_index(tty->index);
511 retval = tty_standard_install(driver, tty);
513 goto error_init_termios;
515 tty->driver_data = acm;
520 tty_port_put(&acm->port);
524 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
526 struct acm *acm = tty->driver_data;
528 dev_dbg(tty->dev, "%s\n", __func__);
530 return tty_port_open(&acm->port, tty, filp);
533 static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
535 struct acm *acm = container_of(port, struct acm, port);
536 int retval = -ENODEV;
538 dev_dbg(&acm->control->dev, "%s\n", __func__);
540 mutex_lock(&acm->mutex);
541 if (acm->disconnected)
544 retval = usb_autopm_get_interface(acm->control);
546 goto error_get_interface;
549 * FIXME: Why do we need this? Allocating 64K of physically contiguous
550 * memory is really nasty...
552 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
553 acm->control->needs_remote_wakeup = 1;
555 acm->ctrlurb->dev = acm->dev;
556 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
557 dev_err(&acm->control->dev,
558 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
559 goto error_submit_urb;
562 acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
563 if (acm_set_control(acm, acm->ctrlout) < 0 &&
564 (acm->ctrl_caps & USB_CDC_CAP_LINE))
565 goto error_set_control;
567 usb_autopm_put_interface(acm->control);
570 * Unthrottle device in case the TTY was closed while throttled.
572 spin_lock_irq(&acm->read_lock);
574 acm->throttle_req = 0;
575 spin_unlock_irq(&acm->read_lock);
577 if (acm_submit_read_urbs(acm, GFP_KERNEL))
578 goto error_submit_read_urbs;
580 mutex_unlock(&acm->mutex);
584 error_submit_read_urbs:
586 acm_set_control(acm, acm->ctrlout);
588 usb_kill_urb(acm->ctrlurb);
590 usb_autopm_put_interface(acm->control);
593 mutex_unlock(&acm->mutex);
597 static void acm_port_destruct(struct tty_port *port)
599 struct acm *acm = container_of(port, struct acm, port);
601 dev_dbg(&acm->control->dev, "%s\n", __func__);
603 tty_unregister_device(acm_tty_driver, acm->minor);
604 acm_release_minor(acm);
605 usb_put_intf(acm->control);
606 kfree(acm->country_codes);
610 static void acm_port_shutdown(struct tty_port *port)
612 struct acm *acm = container_of(port, struct acm, port);
615 dev_dbg(&acm->control->dev, "%s\n", __func__);
617 mutex_lock(&acm->mutex);
618 if (!acm->disconnected) {
619 usb_autopm_get_interface(acm->control);
620 acm_set_control(acm, acm->ctrlout = 0);
621 usb_kill_urb(acm->ctrlurb);
622 for (i = 0; i < ACM_NW; i++)
623 usb_kill_urb(acm->wb[i].urb);
624 for (i = 0; i < acm->rx_buflimit; i++)
625 usb_kill_urb(acm->read_urbs[i]);
626 acm->control->needs_remote_wakeup = 0;
627 usb_autopm_put_interface(acm->control);
629 mutex_unlock(&acm->mutex);
632 static void acm_tty_cleanup(struct tty_struct *tty)
634 struct acm *acm = tty->driver_data;
635 dev_dbg(&acm->control->dev, "%s\n", __func__);
636 tty_port_put(&acm->port);
639 static void acm_tty_hangup(struct tty_struct *tty)
641 struct acm *acm = tty->driver_data;
642 dev_dbg(&acm->control->dev, "%s\n", __func__);
643 tty_port_hangup(&acm->port);
646 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
648 struct acm *acm = tty->driver_data;
649 dev_dbg(&acm->control->dev, "%s\n", __func__);
650 tty_port_close(&acm->port, tty, filp);
653 static int acm_tty_write(struct tty_struct *tty,
654 const unsigned char *buf, int count)
656 struct acm *acm = tty->driver_data;
665 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
667 spin_lock_irqsave(&acm->write_lock, flags);
668 wbn = acm_wb_alloc(acm);
670 spin_unlock_irqrestore(&acm->write_lock, flags);
675 count = (count > acm->writesize) ? acm->writesize : count;
676 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
677 memcpy(wb->buf, buf, count);
679 spin_unlock_irqrestore(&acm->write_lock, flags);
681 stat = acm_write_start(acm, wbn);
687 static int acm_tty_write_room(struct tty_struct *tty)
689 struct acm *acm = tty->driver_data;
691 * Do not let the line discipline to know that we have a reserve,
692 * or it might get too enthusiastic.
694 return acm_wb_is_avail(acm) ? acm->writesize : 0;
697 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
699 struct acm *acm = tty->driver_data;
701 * if the device was unplugged then any remaining characters fell out
702 * of the connector ;)
704 if (acm->disconnected)
707 * This is inaccurate (overcounts), but it works.
709 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
712 static void acm_tty_throttle(struct tty_struct *tty)
714 struct acm *acm = tty->driver_data;
716 spin_lock_irq(&acm->read_lock);
717 acm->throttle_req = 1;
718 spin_unlock_irq(&acm->read_lock);
721 static void acm_tty_unthrottle(struct tty_struct *tty)
723 struct acm *acm = tty->driver_data;
724 unsigned int was_throttled;
726 spin_lock_irq(&acm->read_lock);
727 was_throttled = acm->throttled;
729 acm->throttle_req = 0;
730 spin_unlock_irq(&acm->read_lock);
733 acm_submit_read_urbs(acm, GFP_KERNEL);
736 static int acm_tty_break_ctl(struct tty_struct *tty, int state)
738 struct acm *acm = tty->driver_data;
741 retval = acm_send_break(acm, state ? 0xffff : 0);
743 dev_dbg(&acm->control->dev, "%s - send break failed\n",
748 static int acm_tty_tiocmget(struct tty_struct *tty)
750 struct acm *acm = tty->driver_data;
752 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
753 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
754 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
755 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
756 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
760 static int acm_tty_tiocmset(struct tty_struct *tty,
761 unsigned int set, unsigned int clear)
763 struct acm *acm = tty->driver_data;
764 unsigned int newctrl;
766 newctrl = acm->ctrlout;
767 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
768 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
769 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
770 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
772 newctrl = (newctrl & ~clear) | set;
774 if (acm->ctrlout == newctrl)
776 return acm_set_control(acm, acm->ctrlout = newctrl);
779 static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
781 struct serial_struct tmp;
786 memset(&tmp, 0, sizeof(tmp));
787 tmp.flags = ASYNC_LOW_LATENCY;
788 tmp.xmit_fifo_size = acm->writesize;
789 tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
791 if (copy_to_user(info, &tmp, sizeof(tmp)))
797 static int acm_tty_ioctl(struct tty_struct *tty,
798 unsigned int cmd, unsigned long arg)
800 struct acm *acm = tty->driver_data;
801 int rv = -ENOIOCTLCMD;
804 case TIOCGSERIAL: /* gets serial port data */
805 rv = get_serial_info(acm, (struct serial_struct __user *) arg);
812 static const __u32 acm_tty_speed[] = {
813 0, 50, 75, 110, 134, 150, 200, 300, 600,
814 1200, 1800, 2400, 4800, 9600, 19200, 38400,
815 57600, 115200, 230400, 460800, 500000, 576000,
816 921600, 1000000, 1152000, 1500000, 2000000,
817 2500000, 3000000, 3500000, 4000000
820 static void acm_tty_set_termios(struct tty_struct *tty,
821 struct ktermios *termios_old)
823 struct acm *acm = tty->driver_data;
824 struct ktermios *termios = &tty->termios;
825 struct usb_cdc_line_coding newline;
826 int newctrl = acm->ctrlout;
828 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
829 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
830 newline.bParityType = termios->c_cflag & PARENB ?
831 (termios->c_cflag & PARODD ? 1 : 2) +
832 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
833 switch (termios->c_cflag & CSIZE) {
835 newline.bDataBits = 5;
838 newline.bDataBits = 6;
841 newline.bDataBits = 7;
845 newline.bDataBits = 8;
848 /* FIXME: Needs to clear unsupported bits in the termios */
849 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
851 if (!newline.dwDTERate) {
852 newline.dwDTERate = acm->line.dwDTERate;
853 newctrl &= ~ACM_CTRL_DTR;
855 newctrl |= ACM_CTRL_DTR;
857 if (newctrl != acm->ctrlout)
858 acm_set_control(acm, acm->ctrlout = newctrl);
860 if (memcmp(&acm->line, &newline, sizeof newline)) {
861 memcpy(&acm->line, &newline, sizeof newline);
862 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
864 le32_to_cpu(newline.dwDTERate),
865 newline.bCharFormat, newline.bParityType,
867 acm_set_line(acm, &acm->line);
871 static const struct tty_port_operations acm_port_ops = {
872 .shutdown = acm_port_shutdown,
873 .activate = acm_port_activate,
874 .destruct = acm_port_destruct,
878 * USB probe and disconnect routines.
881 /* Little helpers: write/read buffers free */
882 static void acm_write_buffers_free(struct acm *acm)
886 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
888 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
889 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
892 static void acm_read_buffers_free(struct acm *acm)
894 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
897 for (i = 0; i < acm->rx_buflimit; i++)
898 usb_free_coherent(usb_dev, acm->readsize,
899 acm->read_buffers[i].base, acm->read_buffers[i].dma);
902 /* Little helper: write buffers allocate */
903 static int acm_write_buffers_alloc(struct acm *acm)
908 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
909 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
915 usb_free_coherent(acm->dev, acm->writesize,
924 static int acm_probe(struct usb_interface *intf,
925 const struct usb_device_id *id)
927 struct usb_cdc_union_desc *union_header = NULL;
928 struct usb_cdc_country_functional_desc *cfd = NULL;
929 unsigned char *buffer = intf->altsetting->extra;
930 int buflen = intf->altsetting->extralen;
931 struct usb_interface *control_interface;
932 struct usb_interface *data_interface;
933 struct usb_endpoint_descriptor *epctrl = NULL;
934 struct usb_endpoint_descriptor *epread = NULL;
935 struct usb_endpoint_descriptor *epwrite = NULL;
936 struct usb_device *usb_dev = interface_to_usbdev(intf);
939 int ctrlsize, readsize;
941 u8 ac_management_function = 0;
942 u8 call_management_function = 0;
943 int call_interface_num = -1;
944 int data_interface_num = -1;
945 unsigned long quirks;
948 int combined_interfaces = 0;
951 quirks = (unsigned long)id->driver_info;
952 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
954 /* handle quirks deadly to normal probing*/
955 if (quirks == NO_UNION_NORMAL) {
956 data_interface = usb_ifnum_to_if(usb_dev, 1);
957 control_interface = usb_ifnum_to_if(usb_dev, 0);
958 goto skip_normal_probe;
963 dev_err(&intf->dev, "Weird descriptor references\n");
968 if (intf->cur_altsetting->endpoint &&
969 intf->cur_altsetting->endpoint->extralen &&
970 intf->cur_altsetting->endpoint->extra) {
972 "Seeking extra descriptors on endpoint\n");
973 buflen = intf->cur_altsetting->endpoint->extralen;
974 buffer = intf->cur_altsetting->endpoint->extra;
977 "Zero length descriptor references\n");
983 if (buffer[1] != USB_DT_CS_INTERFACE) {
984 dev_err(&intf->dev, "skipping garbage\n");
989 case USB_CDC_UNION_TYPE: /* we've found it */
991 dev_err(&intf->dev, "More than one "
992 "union descriptor, skipping ...\n");
995 union_header = (struct usb_cdc_union_desc *)buffer;
997 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
998 cfd = (struct usb_cdc_country_functional_desc *)buffer;
1000 case USB_CDC_HEADER_TYPE: /* maybe check version */
1001 break; /* for now we ignore it */
1002 case USB_CDC_ACM_TYPE:
1003 ac_management_function = buffer[3];
1005 case USB_CDC_CALL_MANAGEMENT_TYPE:
1006 call_management_function = buffer[3];
1007 call_interface_num = buffer[4];
1008 if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
1009 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1012 /* there are LOTS more CDC descriptors that
1013 * could legitimately be found here.
1015 dev_dbg(&intf->dev, "Ignoring descriptor: "
1016 "type %02x, length %d\n",
1017 buffer[2], buffer[0]);
1021 buflen -= buffer[0];
1022 buffer += buffer[0];
1025 if (!union_header) {
1026 if (call_interface_num > 0) {
1027 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
1028 /* quirks for Droids MuIn LCD */
1029 if (quirks & NO_DATA_INTERFACE)
1030 data_interface = usb_ifnum_to_if(usb_dev, 0);
1032 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1033 control_interface = intf;
1035 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1036 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1039 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1040 combined_interfaces = 1;
1041 control_interface = data_interface = intf;
1042 goto look_for_collapsed_interface;
1046 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1047 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1048 if (!control_interface || !data_interface) {
1049 dev_dbg(&intf->dev, "no interfaces\n");
1054 if (data_interface_num != call_interface_num)
1055 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1057 if (control_interface == data_interface) {
1058 /* some broken devices designed for windows work this way */
1059 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1060 combined_interfaces = 1;
1061 /* a popular other OS doesn't use it */
1062 quirks |= NO_CAP_LINE;
1063 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1064 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1067 look_for_collapsed_interface:
1068 for (i = 0; i < 3; i++) {
1069 struct usb_endpoint_descriptor *ep;
1070 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1072 if (usb_endpoint_is_int_in(ep))
1074 else if (usb_endpoint_is_bulk_out(ep))
1076 else if (usb_endpoint_is_bulk_in(ep))
1081 if (!epctrl || !epread || !epwrite)
1084 goto made_compressed_probe;
1089 /*workaround for switched interfaces */
1090 if (data_interface->cur_altsetting->desc.bInterfaceClass
1091 != CDC_DATA_INTERFACE_TYPE) {
1092 if (control_interface->cur_altsetting->desc.bInterfaceClass
1093 == CDC_DATA_INTERFACE_TYPE) {
1094 struct usb_interface *t;
1096 "Your device has switched interfaces.\n");
1097 t = control_interface;
1098 control_interface = data_interface;
1105 /* Accept probe requests only for the control interface */
1106 if (!combined_interfaces && intf != control_interface)
1109 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1110 /* valid in this context */
1111 dev_dbg(&intf->dev, "The data interface isn't available\n");
1116 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1117 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
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 dev_dbg(&intf->dev, "interfaces are valid\n");
1138 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1140 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1144 minor = acm_alloc_minor(acm);
1145 if (minor == ACM_TTY_MINORS) {
1146 dev_err(&intf->dev, "no more free acm devices\n");
1151 ctrlsize = usb_endpoint_maxp(epctrl);
1152 readsize = usb_endpoint_maxp(epread) *
1153 (quirks == SINGLE_RX_URB ? 1 : 2);
1154 acm->combined_interfaces = combined_interfaces;
1155 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1156 acm->control = control_interface;
1157 acm->data = data_interface;
1160 acm->ctrl_caps = ac_management_function;
1161 if (quirks & NO_CAP_LINE)
1162 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1163 acm->ctrlsize = ctrlsize;
1164 acm->readsize = readsize;
1165 acm->rx_buflimit = num_rx_buf;
1166 INIT_WORK(&acm->work, acm_softint);
1167 spin_lock_init(&acm->write_lock);
1168 spin_lock_init(&acm->read_lock);
1169 mutex_init(&acm->mutex);
1170 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1171 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1173 acm->bInterval = epread->bInterval;
1174 tty_port_init(&acm->port);
1175 acm->port.ops = &acm_port_ops;
1177 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1179 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1182 acm->ctrl_buffer = buf;
1184 if (acm_write_buffers_alloc(acm) < 0) {
1185 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1189 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1190 if (!acm->ctrlurb) {
1191 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1194 for (i = 0; i < num_rx_buf; i++) {
1195 struct acm_rb *rb = &(acm->read_buffers[i]);
1198 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1201 dev_err(&intf->dev, "out of memory "
1202 "(read bufs usb_alloc_coherent)\n");
1208 urb = usb_alloc_urb(0, GFP_KERNEL);
1211 "out of memory (read urbs usb_alloc_urb)\n");
1214 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1215 urb->transfer_dma = rb->dma;
1216 if (acm->is_int_ep) {
1217 usb_fill_int_urb(urb, acm->dev,
1221 acm_read_bulk_callback, rb,
1224 usb_fill_bulk_urb(urb, acm->dev,
1228 acm_read_bulk_callback, rb);
1231 acm->read_urbs[i] = urb;
1232 __set_bit(i, &acm->read_urbs_free);
1234 for (i = 0; i < ACM_NW; i++) {
1235 struct acm_wb *snd = &(acm->wb[i]);
1237 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1238 if (snd->urb == NULL) {
1240 "out of memory (write urbs usb_alloc_urb)\n");
1244 if (usb_endpoint_xfer_int(epwrite))
1245 usb_fill_int_urb(snd->urb, usb_dev,
1246 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
1247 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1249 usb_fill_bulk_urb(snd->urb, usb_dev,
1250 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1251 NULL, acm->writesize, acm_write_bulk, snd);
1252 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1253 snd->instance = acm;
1256 usb_set_intfdata(intf, acm);
1258 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1262 if (cfd) { /* export the country data */
1263 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1264 if (!acm->country_codes)
1265 goto skip_countries;
1266 acm->country_code_size = cfd->bLength - 4;
1267 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1269 acm->country_rel_date = cfd->iCountryCodeRelDate;
1271 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1273 kfree(acm->country_codes);
1274 acm->country_codes = NULL;
1275 acm->country_code_size = 0;
1276 goto skip_countries;
1279 i = device_create_file(&intf->dev,
1280 &dev_attr_iCountryCodeRelDate);
1282 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1283 kfree(acm->country_codes);
1284 acm->country_codes = NULL;
1285 acm->country_code_size = 0;
1286 goto skip_countries;
1291 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1292 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1293 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1294 /* works around buggy devices */
1295 epctrl->bInterval ? epctrl->bInterval : 0xff);
1296 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1297 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1299 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1301 acm_set_control(acm, acm->ctrlout);
1303 acm->line.dwDTERate = cpu_to_le32(9600);
1304 acm->line.bDataBits = 8;
1305 acm_set_line(acm, &acm->line);
1307 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1308 usb_set_intfdata(data_interface, acm);
1310 usb_get_intf(control_interface);
1311 tty_port_register_device(&acm->port, acm_tty_driver, minor,
1312 &control_interface->dev);
1316 for (i = 0; i < ACM_NW; i++)
1317 usb_free_urb(acm->wb[i].urb);
1319 for (i = 0; i < num_rx_buf; i++)
1320 usb_free_urb(acm->read_urbs[i]);
1321 acm_read_buffers_free(acm);
1322 usb_free_urb(acm->ctrlurb);
1324 acm_write_buffers_free(acm);
1326 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1328 acm_release_minor(acm);
1334 static void stop_data_traffic(struct acm *acm)
1338 dev_dbg(&acm->control->dev, "%s\n", __func__);
1340 usb_kill_urb(acm->ctrlurb);
1341 for (i = 0; i < ACM_NW; i++)
1342 usb_kill_urb(acm->wb[i].urb);
1343 for (i = 0; i < acm->rx_buflimit; i++)
1344 usb_kill_urb(acm->read_urbs[i]);
1346 cancel_work_sync(&acm->work);
1349 static void acm_disconnect(struct usb_interface *intf)
1351 struct acm *acm = usb_get_intfdata(intf);
1352 struct usb_device *usb_dev = interface_to_usbdev(intf);
1353 struct tty_struct *tty;
1356 dev_dbg(&intf->dev, "%s\n", __func__);
1358 /* sibling interface is already cleaning up */
1362 mutex_lock(&acm->mutex);
1363 acm->disconnected = true;
1364 if (acm->country_codes) {
1365 device_remove_file(&acm->control->dev,
1366 &dev_attr_wCountryCodes);
1367 device_remove_file(&acm->control->dev,
1368 &dev_attr_iCountryCodeRelDate);
1370 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1371 usb_set_intfdata(acm->control, NULL);
1372 usb_set_intfdata(acm->data, NULL);
1373 mutex_unlock(&acm->mutex);
1375 tty = tty_port_tty_get(&acm->port);
1381 stop_data_traffic(acm);
1383 usb_free_urb(acm->ctrlurb);
1384 for (i = 0; i < ACM_NW; i++)
1385 usb_free_urb(acm->wb[i].urb);
1386 for (i = 0; i < acm->rx_buflimit; i++)
1387 usb_free_urb(acm->read_urbs[i]);
1388 acm_write_buffers_free(acm);
1389 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1390 acm_read_buffers_free(acm);
1392 if (!acm->combined_interfaces)
1393 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1394 acm->data : acm->control);
1396 tty_port_put(&acm->port);
1400 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1402 struct acm *acm = usb_get_intfdata(intf);
1405 if (PMSG_IS_AUTO(message)) {
1408 spin_lock_irq(&acm->write_lock);
1409 b = acm->transmitting;
1410 spin_unlock_irq(&acm->write_lock);
1415 spin_lock_irq(&acm->read_lock);
1416 spin_lock(&acm->write_lock);
1417 cnt = acm->susp_count++;
1418 spin_unlock(&acm->write_lock);
1419 spin_unlock_irq(&acm->read_lock);
1424 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
1425 stop_data_traffic(acm);
1430 static int acm_resume(struct usb_interface *intf)
1432 struct acm *acm = usb_get_intfdata(intf);
1437 spin_lock_irq(&acm->read_lock);
1438 acm->susp_count -= 1;
1439 cnt = acm->susp_count;
1440 spin_unlock_irq(&acm->read_lock);
1445 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1446 rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
1448 spin_lock_irq(&acm->write_lock);
1449 if (acm->delayed_wb) {
1450 wb = acm->delayed_wb;
1451 acm->delayed_wb = NULL;
1452 spin_unlock_irq(&acm->write_lock);
1453 acm_start_wb(acm, wb);
1455 spin_unlock_irq(&acm->write_lock);
1459 * delayed error checking because we must
1460 * do the write path at all cost
1465 rv = acm_submit_read_urbs(acm, GFP_NOIO);
1472 static int acm_reset_resume(struct usb_interface *intf)
1474 struct acm *acm = usb_get_intfdata(intf);
1475 struct tty_struct *tty;
1477 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1478 tty = tty_port_tty_get(&acm->port);
1485 return acm_resume(intf);
1488 #endif /* CONFIG_PM */
1490 #define NOKIA_PCSUITE_ACM_INFO(x) \
1491 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1492 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1493 USB_CDC_ACM_PROTO_VENDOR)
1495 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1496 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1497 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1498 USB_CDC_ACM_PROTO_VENDOR)
1501 * USB driver structure.
1504 static const struct usb_device_id acm_ids[] = {
1505 /* quirky and broken devices */
1506 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1507 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1509 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1510 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1512 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1513 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1515 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1516 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1518 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1519 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1521 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1522 .driver_info = SINGLE_RX_URB,
1524 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1525 .driver_info = SINGLE_RX_URB, /* firmware bug */
1527 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1528 .driver_info = SINGLE_RX_URB, /* firmware bug */
1530 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1531 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1533 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1534 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1536 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1537 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1539 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1540 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1542 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1543 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1545 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1547 /* Motorola H24 HSPA module: */
1548 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
1549 { USB_DEVICE(0x22b8, 0x2d92) }, /* modem + diagnostics */
1550 { USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port */
1551 { USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics */
1552 { USB_DEVICE(0x22b8, 0x2d96) }, /* modem + NMEA */
1553 { USB_DEVICE(0x22b8, 0x2d97) }, /* modem + diagnostics + NMEA */
1554 { USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port + NMEA */
1555 { USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA */
1557 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1558 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1559 data interface instead of
1560 communications interface.
1561 Maybe we should define a new
1564 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1565 .driver_info = NO_UNION_NORMAL,
1567 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1568 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1570 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1571 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1574 /* Nokia S60 phones expose two ACM channels. The first is
1575 * a modem and is picked up by the standard AT-command
1576 * information below. The second is 'vendor-specific' but
1577 * is treated as a serial device at the S60 end, so we want
1578 * to expose it on Linux too. */
1579 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1580 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1581 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1582 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1583 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1584 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1585 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1586 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1587 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1588 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1589 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1590 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1591 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1592 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1593 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1594 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1595 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1596 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1597 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1598 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1599 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1600 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1601 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1602 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1603 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1604 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1605 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1606 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1607 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1608 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1609 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1610 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1611 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1612 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1613 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1614 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1615 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1616 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1617 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1618 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1619 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1620 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1621 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1622 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1623 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1624 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1625 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1626 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1627 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1628 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1629 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1630 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1631 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1632 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1633 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1634 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1635 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
1636 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1638 /* Support for Owen devices */
1639 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1641 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1643 /* Support Lego NXT using pbLua firmware */
1644 { USB_DEVICE(0x0694, 0xff00),
1645 .driver_info = NOT_A_MODEM,
1648 /* Support for Droids MuIn LCD */
1649 { USB_DEVICE(0x04d8, 0x000b),
1650 .driver_info = NO_DATA_INTERFACE,
1653 /* control interfaces without any protocol set */
1654 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1655 USB_CDC_PROTO_NONE) },
1657 /* control interfaces with various AT-command sets */
1658 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1659 USB_CDC_ACM_PROTO_AT_V25TER) },
1660 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1661 USB_CDC_ACM_PROTO_AT_PCCA101) },
1662 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1663 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1664 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1665 USB_CDC_ACM_PROTO_AT_GSM) },
1666 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1667 USB_CDC_ACM_PROTO_AT_3G) },
1668 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1669 USB_CDC_ACM_PROTO_AT_CDMA) },
1674 MODULE_DEVICE_TABLE(usb, acm_ids);
1676 static struct usb_driver acm_driver = {
1679 .disconnect = acm_disconnect,
1681 .suspend = acm_suspend,
1682 .resume = acm_resume,
1683 .reset_resume = acm_reset_resume,
1685 .id_table = acm_ids,
1687 .supports_autosuspend = 1,
1689 .disable_hub_initiated_lpm = 1,
1693 * TTY driver structures.
1696 static const struct tty_operations acm_ops = {
1697 .install = acm_tty_install,
1698 .open = acm_tty_open,
1699 .close = acm_tty_close,
1700 .cleanup = acm_tty_cleanup,
1701 .hangup = acm_tty_hangup,
1702 .write = acm_tty_write,
1703 .write_room = acm_tty_write_room,
1704 .ioctl = acm_tty_ioctl,
1705 .throttle = acm_tty_throttle,
1706 .unthrottle = acm_tty_unthrottle,
1707 .chars_in_buffer = acm_tty_chars_in_buffer,
1708 .break_ctl = acm_tty_break_ctl,
1709 .set_termios = acm_tty_set_termios,
1710 .tiocmget = acm_tty_tiocmget,
1711 .tiocmset = acm_tty_tiocmset,
1718 static int __init acm_init(void)
1721 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1722 if (!acm_tty_driver)
1724 acm_tty_driver->driver_name = "acm",
1725 acm_tty_driver->name = "ttyACM",
1726 acm_tty_driver->major = ACM_TTY_MAJOR,
1727 acm_tty_driver->minor_start = 0,
1728 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1729 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1730 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1731 acm_tty_driver->init_termios = tty_std_termios;
1732 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1734 tty_set_operations(acm_tty_driver, &acm_ops);
1736 retval = tty_register_driver(acm_tty_driver);
1738 put_tty_driver(acm_tty_driver);
1742 retval = usb_register(&acm_driver);
1744 tty_unregister_driver(acm_tty_driver);
1745 put_tty_driver(acm_tty_driver);
1749 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1754 static void __exit acm_exit(void)
1756 usb_deregister(&acm_driver);
1757 tty_unregister_driver(acm_tty_driver);
1758 put_tty_driver(acm_tty_driver);
1761 module_init(acm_init);
1762 module_exit(acm_exit);
1764 MODULE_AUTHOR(DRIVER_AUTHOR);
1765 MODULE_DESCRIPTION(DRIVER_DESC);
1766 MODULE_LICENSE("GPL");
1767 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);