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 const __u8 acm_tty_size[] = {
824 static void acm_tty_set_termios(struct tty_struct *tty,
825 struct ktermios *termios_old)
827 struct acm *acm = tty->driver_data;
828 struct ktermios *termios = &tty->termios;
829 struct usb_cdc_line_coding newline;
830 int newctrl = acm->ctrlout;
832 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
833 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
834 newline.bParityType = termios->c_cflag & PARENB ?
835 (termios->c_cflag & PARODD ? 1 : 2) +
836 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
837 newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4];
838 /* FIXME: Needs to clear unsupported bits in the termios */
839 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
841 if (!newline.dwDTERate) {
842 newline.dwDTERate = acm->line.dwDTERate;
843 newctrl &= ~ACM_CTRL_DTR;
845 newctrl |= ACM_CTRL_DTR;
847 if (newctrl != acm->ctrlout)
848 acm_set_control(acm, acm->ctrlout = newctrl);
850 if (memcmp(&acm->line, &newline, sizeof newline)) {
851 memcpy(&acm->line, &newline, sizeof newline);
852 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
854 le32_to_cpu(newline.dwDTERate),
855 newline.bCharFormat, newline.bParityType,
857 acm_set_line(acm, &acm->line);
861 static const struct tty_port_operations acm_port_ops = {
862 .shutdown = acm_port_shutdown,
863 .activate = acm_port_activate,
864 .destruct = acm_port_destruct,
868 * USB probe and disconnect routines.
871 /* Little helpers: write/read buffers free */
872 static void acm_write_buffers_free(struct acm *acm)
876 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
878 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
879 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
882 static void acm_read_buffers_free(struct acm *acm)
884 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
887 for (i = 0; i < acm->rx_buflimit; i++)
888 usb_free_coherent(usb_dev, acm->readsize,
889 acm->read_buffers[i].base, acm->read_buffers[i].dma);
892 /* Little helper: write buffers allocate */
893 static int acm_write_buffers_alloc(struct acm *acm)
898 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
899 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
905 usb_free_coherent(acm->dev, acm->writesize,
914 static int acm_probe(struct usb_interface *intf,
915 const struct usb_device_id *id)
917 struct usb_cdc_union_desc *union_header = NULL;
918 struct usb_cdc_country_functional_desc *cfd = NULL;
919 unsigned char *buffer = intf->altsetting->extra;
920 int buflen = intf->altsetting->extralen;
921 struct usb_interface *control_interface;
922 struct usb_interface *data_interface;
923 struct usb_endpoint_descriptor *epctrl = NULL;
924 struct usb_endpoint_descriptor *epread = NULL;
925 struct usb_endpoint_descriptor *epwrite = NULL;
926 struct usb_device *usb_dev = interface_to_usbdev(intf);
929 int ctrlsize, readsize;
931 u8 ac_management_function = 0;
932 u8 call_management_function = 0;
933 int call_interface_num = -1;
934 int data_interface_num = -1;
935 unsigned long quirks;
938 int combined_interfaces = 0;
941 quirks = (unsigned long)id->driver_info;
942 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
944 /* handle quirks deadly to normal probing*/
945 if (quirks == NO_UNION_NORMAL) {
946 data_interface = usb_ifnum_to_if(usb_dev, 1);
947 control_interface = usb_ifnum_to_if(usb_dev, 0);
948 goto skip_normal_probe;
953 dev_err(&intf->dev, "Weird descriptor references\n");
958 if (intf->cur_altsetting->endpoint &&
959 intf->cur_altsetting->endpoint->extralen &&
960 intf->cur_altsetting->endpoint->extra) {
962 "Seeking extra descriptors on endpoint\n");
963 buflen = intf->cur_altsetting->endpoint->extralen;
964 buffer = intf->cur_altsetting->endpoint->extra;
967 "Zero length descriptor references\n");
973 if (buffer[1] != USB_DT_CS_INTERFACE) {
974 dev_err(&intf->dev, "skipping garbage\n");
979 case USB_CDC_UNION_TYPE: /* we've found it */
981 dev_err(&intf->dev, "More than one "
982 "union descriptor, skipping ...\n");
985 union_header = (struct usb_cdc_union_desc *)buffer;
987 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
988 cfd = (struct usb_cdc_country_functional_desc *)buffer;
990 case USB_CDC_HEADER_TYPE: /* maybe check version */
991 break; /* for now we ignore it */
992 case USB_CDC_ACM_TYPE:
993 ac_management_function = buffer[3];
995 case USB_CDC_CALL_MANAGEMENT_TYPE:
996 call_management_function = buffer[3];
997 call_interface_num = buffer[4];
998 if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
999 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1002 /* there are LOTS more CDC descriptors that
1003 * could legitimately be found here.
1005 dev_dbg(&intf->dev, "Ignoring descriptor: "
1006 "type %02x, length %d\n",
1007 buffer[2], buffer[0]);
1011 buflen -= buffer[0];
1012 buffer += buffer[0];
1015 if (!union_header) {
1016 if (call_interface_num > 0) {
1017 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
1018 /* quirks for Droids MuIn LCD */
1019 if (quirks & NO_DATA_INTERFACE)
1020 data_interface = usb_ifnum_to_if(usb_dev, 0);
1022 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1023 control_interface = intf;
1025 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1026 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1029 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1030 combined_interfaces = 1;
1031 control_interface = data_interface = intf;
1032 goto look_for_collapsed_interface;
1036 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1037 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1038 if (!control_interface || !data_interface) {
1039 dev_dbg(&intf->dev, "no interfaces\n");
1044 if (data_interface_num != call_interface_num)
1045 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1047 if (control_interface == data_interface) {
1048 /* some broken devices designed for windows work this way */
1049 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1050 combined_interfaces = 1;
1051 /* a popular other OS doesn't use it */
1052 quirks |= NO_CAP_LINE;
1053 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1054 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1057 look_for_collapsed_interface:
1058 for (i = 0; i < 3; i++) {
1059 struct usb_endpoint_descriptor *ep;
1060 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1062 if (usb_endpoint_is_int_in(ep))
1064 else if (usb_endpoint_is_bulk_out(ep))
1066 else if (usb_endpoint_is_bulk_in(ep))
1071 if (!epctrl || !epread || !epwrite)
1074 goto made_compressed_probe;
1079 /*workaround for switched interfaces */
1080 if (data_interface->cur_altsetting->desc.bInterfaceClass
1081 != CDC_DATA_INTERFACE_TYPE) {
1082 if (control_interface->cur_altsetting->desc.bInterfaceClass
1083 == CDC_DATA_INTERFACE_TYPE) {
1084 struct usb_interface *t;
1086 "Your device has switched interfaces.\n");
1087 t = control_interface;
1088 control_interface = data_interface;
1095 /* Accept probe requests only for the control interface */
1096 if (!combined_interfaces && intf != control_interface)
1099 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1100 /* valid in this context */
1101 dev_dbg(&intf->dev, "The data interface isn't available\n");
1106 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1107 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
1110 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1111 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1112 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1115 /* workaround for switched endpoints */
1116 if (!usb_endpoint_dir_in(epread)) {
1117 /* descriptors are swapped */
1118 struct usb_endpoint_descriptor *t;
1120 "The data interface has switched endpoints\n");
1125 made_compressed_probe:
1126 dev_dbg(&intf->dev, "interfaces are valid\n");
1128 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1130 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1134 minor = acm_alloc_minor(acm);
1135 if (minor == ACM_TTY_MINORS) {
1136 dev_err(&intf->dev, "no more free acm devices\n");
1141 ctrlsize = usb_endpoint_maxp(epctrl);
1142 readsize = usb_endpoint_maxp(epread) *
1143 (quirks == SINGLE_RX_URB ? 1 : 2);
1144 acm->combined_interfaces = combined_interfaces;
1145 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1146 acm->control = control_interface;
1147 acm->data = data_interface;
1150 acm->ctrl_caps = ac_management_function;
1151 if (quirks & NO_CAP_LINE)
1152 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1153 acm->ctrlsize = ctrlsize;
1154 acm->readsize = readsize;
1155 acm->rx_buflimit = num_rx_buf;
1156 INIT_WORK(&acm->work, acm_softint);
1157 spin_lock_init(&acm->write_lock);
1158 spin_lock_init(&acm->read_lock);
1159 mutex_init(&acm->mutex);
1160 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1161 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1163 acm->bInterval = epread->bInterval;
1164 tty_port_init(&acm->port);
1165 acm->port.ops = &acm_port_ops;
1167 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1169 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1172 acm->ctrl_buffer = buf;
1174 if (acm_write_buffers_alloc(acm) < 0) {
1175 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1179 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1180 if (!acm->ctrlurb) {
1181 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1184 for (i = 0; i < num_rx_buf; i++) {
1185 struct acm_rb *rb = &(acm->read_buffers[i]);
1188 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1191 dev_err(&intf->dev, "out of memory "
1192 "(read bufs usb_alloc_coherent)\n");
1198 urb = usb_alloc_urb(0, GFP_KERNEL);
1201 "out of memory (read urbs usb_alloc_urb)\n");
1204 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1205 urb->transfer_dma = rb->dma;
1206 if (acm->is_int_ep) {
1207 usb_fill_int_urb(urb, acm->dev,
1211 acm_read_bulk_callback, rb,
1214 usb_fill_bulk_urb(urb, acm->dev,
1218 acm_read_bulk_callback, rb);
1221 acm->read_urbs[i] = urb;
1222 __set_bit(i, &acm->read_urbs_free);
1224 for (i = 0; i < ACM_NW; i++) {
1225 struct acm_wb *snd = &(acm->wb[i]);
1227 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1228 if (snd->urb == NULL) {
1230 "out of memory (write urbs usb_alloc_urb)\n");
1234 if (usb_endpoint_xfer_int(epwrite))
1235 usb_fill_int_urb(snd->urb, usb_dev,
1236 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
1237 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1239 usb_fill_bulk_urb(snd->urb, usb_dev,
1240 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1241 NULL, acm->writesize, acm_write_bulk, snd);
1242 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1243 snd->instance = acm;
1246 usb_set_intfdata(intf, acm);
1248 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1252 if (cfd) { /* export the country data */
1253 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1254 if (!acm->country_codes)
1255 goto skip_countries;
1256 acm->country_code_size = cfd->bLength - 4;
1257 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1259 acm->country_rel_date = cfd->iCountryCodeRelDate;
1261 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1263 kfree(acm->country_codes);
1264 acm->country_codes = NULL;
1265 acm->country_code_size = 0;
1266 goto skip_countries;
1269 i = device_create_file(&intf->dev,
1270 &dev_attr_iCountryCodeRelDate);
1272 device_remove_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;
1281 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1282 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1283 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1284 /* works around buggy devices */
1285 epctrl->bInterval ? epctrl->bInterval : 0xff);
1286 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1287 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1289 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1291 acm_set_control(acm, acm->ctrlout);
1293 acm->line.dwDTERate = cpu_to_le32(9600);
1294 acm->line.bDataBits = 8;
1295 acm_set_line(acm, &acm->line);
1297 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1298 usb_set_intfdata(data_interface, acm);
1300 usb_get_intf(control_interface);
1301 tty_port_register_device(&acm->port, acm_tty_driver, minor,
1302 &control_interface->dev);
1306 for (i = 0; i < ACM_NW; i++)
1307 usb_free_urb(acm->wb[i].urb);
1309 for (i = 0; i < num_rx_buf; i++)
1310 usb_free_urb(acm->read_urbs[i]);
1311 acm_read_buffers_free(acm);
1312 usb_free_urb(acm->ctrlurb);
1314 acm_write_buffers_free(acm);
1316 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1318 acm_release_minor(acm);
1324 static void stop_data_traffic(struct acm *acm)
1328 dev_dbg(&acm->control->dev, "%s\n", __func__);
1330 usb_kill_urb(acm->ctrlurb);
1331 for (i = 0; i < ACM_NW; i++)
1332 usb_kill_urb(acm->wb[i].urb);
1333 for (i = 0; i < acm->rx_buflimit; i++)
1334 usb_kill_urb(acm->read_urbs[i]);
1336 cancel_work_sync(&acm->work);
1339 static void acm_disconnect(struct usb_interface *intf)
1341 struct acm *acm = usb_get_intfdata(intf);
1342 struct usb_device *usb_dev = interface_to_usbdev(intf);
1343 struct tty_struct *tty;
1346 dev_dbg(&intf->dev, "%s\n", __func__);
1348 /* sibling interface is already cleaning up */
1352 mutex_lock(&acm->mutex);
1353 acm->disconnected = true;
1354 if (acm->country_codes) {
1355 device_remove_file(&acm->control->dev,
1356 &dev_attr_wCountryCodes);
1357 device_remove_file(&acm->control->dev,
1358 &dev_attr_iCountryCodeRelDate);
1360 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1361 usb_set_intfdata(acm->control, NULL);
1362 usb_set_intfdata(acm->data, NULL);
1363 mutex_unlock(&acm->mutex);
1365 tty = tty_port_tty_get(&acm->port);
1371 stop_data_traffic(acm);
1373 usb_free_urb(acm->ctrlurb);
1374 for (i = 0; i < ACM_NW; i++)
1375 usb_free_urb(acm->wb[i].urb);
1376 for (i = 0; i < acm->rx_buflimit; i++)
1377 usb_free_urb(acm->read_urbs[i]);
1378 acm_write_buffers_free(acm);
1379 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1380 acm_read_buffers_free(acm);
1382 if (!acm->combined_interfaces)
1383 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1384 acm->data : acm->control);
1386 tty_port_put(&acm->port);
1390 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1392 struct acm *acm = usb_get_intfdata(intf);
1395 if (PMSG_IS_AUTO(message)) {
1398 spin_lock_irq(&acm->write_lock);
1399 b = acm->transmitting;
1400 spin_unlock_irq(&acm->write_lock);
1405 spin_lock_irq(&acm->read_lock);
1406 spin_lock(&acm->write_lock);
1407 cnt = acm->susp_count++;
1408 spin_unlock(&acm->write_lock);
1409 spin_unlock_irq(&acm->read_lock);
1414 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
1415 stop_data_traffic(acm);
1420 static int acm_resume(struct usb_interface *intf)
1422 struct acm *acm = usb_get_intfdata(intf);
1427 spin_lock_irq(&acm->read_lock);
1428 acm->susp_count -= 1;
1429 cnt = acm->susp_count;
1430 spin_unlock_irq(&acm->read_lock);
1435 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1436 rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
1438 spin_lock_irq(&acm->write_lock);
1439 if (acm->delayed_wb) {
1440 wb = acm->delayed_wb;
1441 acm->delayed_wb = NULL;
1442 spin_unlock_irq(&acm->write_lock);
1443 acm_start_wb(acm, wb);
1445 spin_unlock_irq(&acm->write_lock);
1449 * delayed error checking because we must
1450 * do the write path at all cost
1455 rv = acm_submit_read_urbs(acm, GFP_NOIO);
1462 static int acm_reset_resume(struct usb_interface *intf)
1464 struct acm *acm = usb_get_intfdata(intf);
1465 struct tty_struct *tty;
1467 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1468 tty = tty_port_tty_get(&acm->port);
1475 return acm_resume(intf);
1478 #endif /* CONFIG_PM */
1480 #define NOKIA_PCSUITE_ACM_INFO(x) \
1481 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1482 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1483 USB_CDC_ACM_PROTO_VENDOR)
1485 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1486 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1487 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1488 USB_CDC_ACM_PROTO_VENDOR)
1491 * USB driver structure.
1494 static const struct usb_device_id acm_ids[] = {
1495 /* quirky and broken devices */
1496 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1497 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1499 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1500 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1502 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1503 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1505 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1506 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1508 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1509 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1511 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1512 .driver_info = SINGLE_RX_URB,
1514 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1515 .driver_info = SINGLE_RX_URB, /* firmware bug */
1517 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1518 .driver_info = SINGLE_RX_URB, /* firmware bug */
1520 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1521 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1523 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1524 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1526 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1527 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1529 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1530 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1532 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1533 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1535 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1537 /* Motorola H24 HSPA module: */
1538 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
1539 { USB_DEVICE(0x22b8, 0x2d92) }, /* modem + diagnostics */
1540 { USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port */
1541 { USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics */
1542 { USB_DEVICE(0x22b8, 0x2d96) }, /* modem + NMEA */
1543 { USB_DEVICE(0x22b8, 0x2d97) }, /* modem + diagnostics + NMEA */
1544 { USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port + NMEA */
1545 { USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA */
1547 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1548 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1549 data interface instead of
1550 communications interface.
1551 Maybe we should define a new
1554 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1555 .driver_info = NO_UNION_NORMAL,
1557 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1558 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1560 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1561 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1564 /* Nokia S60 phones expose two ACM channels. The first is
1565 * a modem and is picked up by the standard AT-command
1566 * information below. The second is 'vendor-specific' but
1567 * is treated as a serial device at the S60 end, so we want
1568 * to expose it on Linux too. */
1569 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1570 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1571 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1572 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1573 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1574 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1575 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1576 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1577 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1578 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1579 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1580 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1581 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1582 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1583 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1584 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1585 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1586 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1587 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1588 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1589 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1590 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1591 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1592 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1593 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1594 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1595 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1596 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1597 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1598 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1599 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1600 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1601 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1602 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1603 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1604 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1605 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1606 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1607 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1608 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1609 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1610 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1611 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1612 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1613 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1614 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1615 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1616 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1617 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1618 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1619 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1620 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1621 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1622 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1623 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1624 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1625 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
1626 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1628 /* Support for Owen devices */
1629 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1631 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1633 /* Support Lego NXT using pbLua firmware */
1634 { USB_DEVICE(0x0694, 0xff00),
1635 .driver_info = NOT_A_MODEM,
1638 /* Support for Droids MuIn LCD */
1639 { USB_DEVICE(0x04d8, 0x000b),
1640 .driver_info = NO_DATA_INTERFACE,
1643 /* control interfaces without any protocol set */
1644 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1645 USB_CDC_PROTO_NONE) },
1647 /* control interfaces with various AT-command sets */
1648 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1649 USB_CDC_ACM_PROTO_AT_V25TER) },
1650 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1651 USB_CDC_ACM_PROTO_AT_PCCA101) },
1652 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1653 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1654 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1655 USB_CDC_ACM_PROTO_AT_GSM) },
1656 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1657 USB_CDC_ACM_PROTO_AT_3G) },
1658 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1659 USB_CDC_ACM_PROTO_AT_CDMA) },
1664 MODULE_DEVICE_TABLE(usb, acm_ids);
1666 static struct usb_driver acm_driver = {
1669 .disconnect = acm_disconnect,
1671 .suspend = acm_suspend,
1672 .resume = acm_resume,
1673 .reset_resume = acm_reset_resume,
1675 .id_table = acm_ids,
1677 .supports_autosuspend = 1,
1679 .disable_hub_initiated_lpm = 1,
1683 * TTY driver structures.
1686 static const struct tty_operations acm_ops = {
1687 .install = acm_tty_install,
1688 .open = acm_tty_open,
1689 .close = acm_tty_close,
1690 .cleanup = acm_tty_cleanup,
1691 .hangup = acm_tty_hangup,
1692 .write = acm_tty_write,
1693 .write_room = acm_tty_write_room,
1694 .ioctl = acm_tty_ioctl,
1695 .throttle = acm_tty_throttle,
1696 .unthrottle = acm_tty_unthrottle,
1697 .chars_in_buffer = acm_tty_chars_in_buffer,
1698 .break_ctl = acm_tty_break_ctl,
1699 .set_termios = acm_tty_set_termios,
1700 .tiocmget = acm_tty_tiocmget,
1701 .tiocmset = acm_tty_tiocmset,
1708 static int __init acm_init(void)
1711 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1712 if (!acm_tty_driver)
1714 acm_tty_driver->driver_name = "acm",
1715 acm_tty_driver->name = "ttyACM",
1716 acm_tty_driver->major = ACM_TTY_MAJOR,
1717 acm_tty_driver->minor_start = 0,
1718 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1719 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1720 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1721 acm_tty_driver->init_termios = tty_std_termios;
1722 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1724 tty_set_operations(acm_tty_driver, &acm_ops);
1726 retval = tty_register_driver(acm_tty_driver);
1728 put_tty_driver(acm_tty_driver);
1732 retval = usb_register(&acm_driver);
1734 tty_unregister_driver(acm_tty_driver);
1735 put_tty_driver(acm_tty_driver);
1739 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1744 static void __exit acm_exit(void)
1746 usb_deregister(&acm_driver);
1747 tty_unregister_driver(acm_tty_driver);
1748 put_tty_driver(acm_tty_driver);
1751 module_init(acm_init);
1752 module_exit(acm_exit);
1754 MODULE_AUTHOR(DRIVER_AUTHOR);
1755 MODULE_DESCRIPTION(DRIVER_DESC);
1756 MODULE_LICENSE("GPL");
1757 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);