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>
11 * USB Abstract Control Model driver for USB modems and ISDN adapters
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 #include <linux/kernel.h>
34 #include <linux/errno.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/tty.h>
38 #include <linux/serial.h>
39 #include <linux/tty_driver.h>
40 #include <linux/tty_flip.h>
41 #include <linux/module.h>
42 #include <linux/mutex.h>
43 #include <linux/uaccess.h>
44 #include <linux/usb.h>
45 #include <linux/usb/cdc.h>
46 #include <asm/byteorder.h>
47 #include <asm/unaligned.h>
48 #include <linux/list.h>
53 #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek"
54 #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
56 static struct usb_driver acm_driver;
57 static struct tty_driver *acm_tty_driver;
58 static struct acm *acm_table[ACM_TTY_MINORS];
60 static DEFINE_MUTEX(open_mutex);
62 #define ACM_READY(acm) (acm && acm->dev && acm->port.count)
64 static const struct tty_port_operations acm_port_ops = {
68 * Functions for ACM control messages.
71 static int acm_ctrl_msg(struct acm *acm, int request, int value,
74 int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
75 request, USB_RT_ACM, value,
76 acm->control->altsetting[0].desc.bInterfaceNumber,
78 dev_dbg(&acm->control->dev,
79 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
80 __func__, request, value, len, retval);
81 return retval < 0 ? retval : 0;
84 /* devices aren't required to support these requests.
85 * the cdc acm descriptor tells whether they do...
87 #define acm_set_control(acm, control) \
88 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
89 #define acm_set_line(acm, line) \
90 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
91 #define acm_send_break(acm, ms) \
92 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
95 * Write buffer management.
96 * All of these assume proper locks taken by the caller.
99 static int acm_wb_alloc(struct acm *acm)
112 wbn = (wbn + 1) % ACM_NW;
118 static int acm_wb_is_avail(struct acm *acm)
124 spin_lock_irqsave(&acm->write_lock, flags);
125 for (i = 0; i < ACM_NW; i++)
127 spin_unlock_irqrestore(&acm->write_lock, flags);
132 * Finish write. Caller must hold acm->write_lock
134 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
138 usb_autopm_put_interface_async(acm->control);
144 * the caller is responsible for locking
147 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
153 wb->urb->transfer_buffer = wb->buf;
154 wb->urb->transfer_dma = wb->dmah;
155 wb->urb->transfer_buffer_length = wb->len;
156 wb->urb->dev = acm->dev;
158 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
160 dev_err(&acm->data->dev,
161 "%s - usb_submit_urb(write bulk) failed: %d\n",
163 acm_write_done(acm, wb);
168 static int acm_write_start(struct acm *acm, int wbn)
171 struct acm_wb *wb = &acm->wb[wbn];
174 spin_lock_irqsave(&acm->write_lock, flags);
177 spin_unlock_irqrestore(&acm->write_lock, flags);
181 dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
183 usb_autopm_get_interface_async(acm->control);
184 if (acm->susp_count) {
185 if (!acm->delayed_wb)
186 acm->delayed_wb = wb;
188 usb_autopm_put_interface_async(acm->control);
189 spin_unlock_irqrestore(&acm->write_lock, flags);
190 return 0; /* A white lie */
192 usb_mark_last_busy(acm->dev);
194 rc = acm_start_wb(acm, wb);
195 spin_unlock_irqrestore(&acm->write_lock, flags);
201 * attributes exported through sysfs
203 static ssize_t show_caps
204 (struct device *dev, struct device_attribute *attr, char *buf)
206 struct usb_interface *intf = to_usb_interface(dev);
207 struct acm *acm = usb_get_intfdata(intf);
209 return sprintf(buf, "%d", acm->ctrl_caps);
211 static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
213 static ssize_t show_country_codes
214 (struct device *dev, struct device_attribute *attr, char *buf)
216 struct usb_interface *intf = to_usb_interface(dev);
217 struct acm *acm = usb_get_intfdata(intf);
219 memcpy(buf, acm->country_codes, acm->country_code_size);
220 return acm->country_code_size;
223 static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
225 static ssize_t show_country_rel_date
226 (struct device *dev, struct device_attribute *attr, char *buf)
228 struct usb_interface *intf = to_usb_interface(dev);
229 struct acm *acm = usb_get_intfdata(intf);
231 return sprintf(buf, "%d", acm->country_rel_date);
234 static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
236 * Interrupt handlers for various ACM device responses
239 /* control interface reports status changes with "interrupt" transfers */
240 static void acm_ctrl_irq(struct urb *urb)
242 struct acm *acm = urb->context;
243 struct usb_cdc_notification *dr = urb->transfer_buffer;
244 struct tty_struct *tty;
248 int status = urb->status;
257 /* this urb is terminated, clean up */
258 dev_dbg(&acm->control->dev,
259 "%s - urb shutting down with status: %d\n",
263 dev_dbg(&acm->control->dev,
264 "%s - nonzero urb status received: %d\n",
272 usb_mark_last_busy(acm->dev);
274 data = (unsigned char *)(dr + 1);
275 switch (dr->bNotificationType) {
276 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
277 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
278 __func__, dr->wValue);
281 case USB_CDC_NOTIFY_SERIAL_STATE:
282 tty = tty_port_tty_get(&acm->port);
283 newctrl = get_unaligned_le16(data);
287 (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
288 dev_dbg(&acm->control->dev,
289 "%s - calling hangup\n", __func__);
295 acm->ctrlin = newctrl;
297 dev_dbg(&acm->control->dev,
298 "%s - input control lines: dcd%c dsr%c break%c "
299 "ring%c framing%c parity%c overrun%c\n",
301 acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
302 acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
303 acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
304 acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
305 acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
306 acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
307 acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
311 dev_dbg(&acm->control->dev,
312 "%s - unknown notification %d received: index %d "
313 "len %d data0 %d data1 %d\n",
315 dr->bNotificationType, dr->wIndex,
316 dr->wLength, data[0], data[1]);
320 retval = usb_submit_urb(urb, GFP_ATOMIC);
322 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
326 /* data interface returns incoming bytes, or we got unthrottled */
327 static void acm_read_bulk(struct urb *urb)
330 struct acm_ru *rcv = urb->context;
331 struct acm *acm = rcv->instance;
332 int status = urb->status;
334 dev_vdbg(&acm->data->dev, "%s - status %d\n", __func__, status);
336 if (!ACM_READY(acm)) {
337 dev_dbg(&acm->data->dev, "%s - acm not ready\n", __func__);
340 usb_mark_last_busy(acm->dev);
343 dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
347 buf->size = urb->actual_length;
349 if (likely(status == 0)) {
350 spin_lock(&acm->read_lock);
352 list_add_tail(&rcv->list, &acm->spare_read_urbs);
353 list_add_tail(&buf->list, &acm->filled_read_bufs);
354 spin_unlock(&acm->read_lock);
356 /* we drop the buffer due to an error */
357 spin_lock(&acm->read_lock);
358 list_add_tail(&rcv->list, &acm->spare_read_urbs);
359 list_add(&buf->list, &acm->spare_read_bufs);
360 spin_unlock(&acm->read_lock);
361 /* nevertheless the tasklet must be kicked unconditionally
362 so the queue cannot dry up */
364 if (likely(!acm->susp_count))
365 tasklet_schedule(&acm->urb_task);
368 static void acm_rx_tasklet(unsigned long _acm)
370 struct acm *acm = (void *)_acm;
372 struct tty_struct *tty;
375 unsigned char throttled;
377 dev_vdbg(&acm->data->dev, "%s\n", __func__);
379 if (!ACM_READY(acm)) {
380 dev_dbg(&acm->data->dev, "%s - acm not ready\n", __func__);
384 spin_lock_irqsave(&acm->throttle_lock, flags);
385 throttled = acm->throttle;
386 spin_unlock_irqrestore(&acm->throttle_lock, flags);
388 dev_dbg(&acm->data->dev, "%s - throttled\n", __func__);
392 tty = tty_port_tty_get(&acm->port);
395 spin_lock_irqsave(&acm->read_lock, flags);
396 if (list_empty(&acm->filled_read_bufs)) {
397 spin_unlock_irqrestore(&acm->read_lock, flags);
400 buf = list_entry(acm->filled_read_bufs.next,
401 struct acm_rb, list);
402 list_del(&buf->list);
403 spin_unlock_irqrestore(&acm->read_lock, flags);
405 dev_vdbg(&acm->data->dev, "%s - processing buf 0x%p, size = %d\n",
406 __func__, buf, buf->size);
408 spin_lock_irqsave(&acm->throttle_lock, flags);
409 throttled = acm->throttle;
410 spin_unlock_irqrestore(&acm->throttle_lock, flags);
412 tty_insert_flip_string(tty, buf->base, buf->size);
413 tty_flip_buffer_push(tty);
416 dev_dbg(&acm->data->dev, "%s - throttling noticed\n",
418 spin_lock_irqsave(&acm->read_lock, flags);
419 list_add(&buf->list, &acm->filled_read_bufs);
420 spin_unlock_irqrestore(&acm->read_lock, flags);
425 spin_lock_irqsave(&acm->read_lock, flags);
426 list_add(&buf->list, &acm->spare_read_bufs);
427 spin_unlock_irqrestore(&acm->read_lock, flags);
433 while (!list_empty(&acm->spare_read_bufs)) {
434 spin_lock_irqsave(&acm->read_lock, flags);
435 if (list_empty(&acm->spare_read_urbs)) {
437 spin_unlock_irqrestore(&acm->read_lock, flags);
440 rcv = list_entry(acm->spare_read_urbs.next,
441 struct acm_ru, list);
442 list_del(&rcv->list);
443 spin_unlock_irqrestore(&acm->read_lock, flags);
445 buf = list_entry(acm->spare_read_bufs.next,
446 struct acm_rb, list);
447 list_del(&buf->list);
452 usb_fill_int_urb(rcv->urb, acm->dev,
456 acm_read_bulk, rcv, acm->bInterval);
458 usb_fill_bulk_urb(rcv->urb, acm->dev,
463 rcv->urb->transfer_dma = buf->dma;
464 rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
466 /* This shouldn't kill the driver as unsuccessful URBs are
467 returned to the free-urbs-pool and resubmited ASAP */
468 spin_lock_irqsave(&acm->read_lock, flags);
469 if (acm->susp_count ||
470 usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) {
471 list_add(&buf->list, &acm->spare_read_bufs);
472 list_add(&rcv->list, &acm->spare_read_urbs);
474 spin_unlock_irqrestore(&acm->read_lock, flags);
477 spin_unlock_irqrestore(&acm->read_lock, flags);
478 dev_vdbg(&acm->data->dev,
479 "%s - sending urb 0x%p, rcv 0x%p, buf 0x%p\n",
480 __func__, rcv->urb, rcv, buf);
483 spin_lock_irqsave(&acm->read_lock, flags);
485 spin_unlock_irqrestore(&acm->read_lock, flags);
488 /* data interface wrote those outgoing bytes */
489 static void acm_write_bulk(struct urb *urb)
491 struct acm_wb *wb = urb->context;
492 struct acm *acm = wb->instance;
495 if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
496 dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
499 urb->transfer_buffer_length,
502 spin_lock_irqsave(&acm->write_lock, flags);
503 acm_write_done(acm, wb);
504 spin_unlock_irqrestore(&acm->write_lock, flags);
506 schedule_work(&acm->work);
509 static void acm_softint(struct work_struct *work)
511 struct acm *acm = container_of(work, struct acm, work);
512 struct tty_struct *tty;
514 dev_vdbg(&acm->data->dev, "%s\n", __func__);
518 tty = tty_port_tty_get(&acm->port);
529 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
535 mutex_lock(&open_mutex);
537 acm = acm_table[tty->index];
538 if (!acm || !acm->dev)
543 dev_dbg(&acm->control->dev, "%s\n", __func__);
545 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
547 tty->driver_data = acm;
548 tty_port_tty_set(&acm->port, tty);
550 if (usb_autopm_get_interface(acm->control) < 0)
553 acm->control->needs_remote_wakeup = 1;
555 mutex_lock(&acm->mutex);
556 if (acm->port.count++) {
557 mutex_unlock(&acm->mutex);
558 usb_autopm_put_interface(acm->control);
562 acm->ctrlurb->dev = acm->dev;
563 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
564 dev_err(&acm->control->dev,
565 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
569 if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) &&
570 (acm->ctrl_caps & USB_CDC_CAP_LINE))
573 usb_autopm_put_interface(acm->control);
575 INIT_LIST_HEAD(&acm->spare_read_urbs);
576 INIT_LIST_HEAD(&acm->spare_read_bufs);
577 INIT_LIST_HEAD(&acm->filled_read_bufs);
579 for (i = 0; i < acm->rx_buflimit; i++)
580 list_add(&(acm->ru[i].list), &acm->spare_read_urbs);
581 for (i = 0; i < acm->rx_buflimit; i++)
582 list_add(&(acm->rb[i].list), &acm->spare_read_bufs);
586 set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
587 rv = tty_port_block_til_ready(&acm->port, tty, filp);
588 tasklet_schedule(&acm->urb_task);
590 mutex_unlock(&acm->mutex);
592 mutex_unlock(&open_mutex);
597 mutex_unlock(&acm->mutex);
598 usb_autopm_put_interface(acm->control);
600 mutex_unlock(&open_mutex);
601 tty_port_tty_set(&acm->port, NULL);
605 static void acm_tty_unregister(struct acm *acm)
609 tty_unregister_device(acm_tty_driver, acm->minor);
610 usb_put_intf(acm->control);
611 acm_table[acm->minor] = NULL;
612 usb_free_urb(acm->ctrlurb);
613 for (i = 0; i < ACM_NW; i++)
614 usb_free_urb(acm->wb[i].urb);
615 for (i = 0; i < acm->rx_buflimit; i++)
616 usb_free_urb(acm->ru[i].urb);
617 kfree(acm->country_codes);
621 static void acm_port_down(struct acm *acm)
625 mutex_lock(&open_mutex);
627 usb_autopm_get_interface(acm->control);
628 acm_set_control(acm, acm->ctrlout = 0);
629 usb_kill_urb(acm->ctrlurb);
630 for (i = 0; i < ACM_NW; i++)
631 usb_kill_urb(acm->wb[i].urb);
632 tasklet_disable(&acm->urb_task);
633 for (i = 0; i < acm->rx_buflimit; i++)
634 usb_kill_urb(acm->ru[i].urb);
635 tasklet_enable(&acm->urb_task);
636 acm->control->needs_remote_wakeup = 0;
637 usb_autopm_put_interface(acm->control);
639 mutex_unlock(&open_mutex);
642 static void acm_tty_hangup(struct tty_struct *tty)
644 struct acm *acm = tty->driver_data;
645 tty_port_hangup(&acm->port);
649 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
651 struct acm *acm = tty->driver_data;
653 /* Perform the closing process and see if we need to do the hardware
657 if (tty_port_close_start(&acm->port, tty, filp) == 0) {
658 mutex_lock(&open_mutex);
660 tty_port_tty_set(&acm->port, NULL);
661 acm_tty_unregister(acm);
662 tty->driver_data = NULL;
664 mutex_unlock(&open_mutex);
668 tty_port_close_end(&acm->port, tty);
669 tty_port_tty_set(&acm->port, NULL);
672 static int acm_tty_write(struct tty_struct *tty,
673 const unsigned char *buf, int count)
675 struct acm *acm = tty->driver_data;
686 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
688 spin_lock_irqsave(&acm->write_lock, flags);
689 wbn = acm_wb_alloc(acm);
691 spin_unlock_irqrestore(&acm->write_lock, flags);
696 count = (count > acm->writesize) ? acm->writesize : count;
697 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
698 memcpy(wb->buf, buf, count);
700 spin_unlock_irqrestore(&acm->write_lock, flags);
702 stat = acm_write_start(acm, wbn);
708 static int acm_tty_write_room(struct tty_struct *tty)
710 struct acm *acm = tty->driver_data;
714 * Do not let the line discipline to know that we have a reserve,
715 * or it might get too enthusiastic.
717 return acm_wb_is_avail(acm) ? acm->writesize : 0;
720 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
722 struct acm *acm = tty->driver_data;
726 * This is inaccurate (overcounts), but it works.
728 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
731 static void acm_tty_throttle(struct tty_struct *tty)
733 struct acm *acm = tty->driver_data;
736 spin_lock_bh(&acm->throttle_lock);
738 spin_unlock_bh(&acm->throttle_lock);
741 static void acm_tty_unthrottle(struct tty_struct *tty)
743 struct acm *acm = tty->driver_data;
746 spin_lock_bh(&acm->throttle_lock);
748 spin_unlock_bh(&acm->throttle_lock);
749 tasklet_schedule(&acm->urb_task);
752 static int acm_tty_break_ctl(struct tty_struct *tty, int state)
754 struct acm *acm = tty->driver_data;
758 retval = acm_send_break(acm, state ? 0xffff : 0);
760 dev_dbg(&acm->control->dev, "%s - send break failed\n",
765 static int acm_tty_tiocmget(struct tty_struct *tty)
767 struct acm *acm = tty->driver_data;
772 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
773 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
774 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
775 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
776 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
780 static int acm_tty_tiocmset(struct tty_struct *tty,
781 unsigned int set, unsigned int clear)
783 struct acm *acm = tty->driver_data;
784 unsigned int newctrl;
789 newctrl = acm->ctrlout;
790 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
791 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
792 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
793 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
795 newctrl = (newctrl & ~clear) | set;
797 if (acm->ctrlout == newctrl)
799 return acm_set_control(acm, acm->ctrlout = newctrl);
802 static int acm_tty_ioctl(struct tty_struct *tty,
803 unsigned int cmd, unsigned long arg)
805 struct acm *acm = tty->driver_data;
813 static const __u32 acm_tty_speed[] = {
814 0, 50, 75, 110, 134, 150, 200, 300, 600,
815 1200, 1800, 2400, 4800, 9600, 19200, 38400,
816 57600, 115200, 230400, 460800, 500000, 576000,
817 921600, 1000000, 1152000, 1500000, 2000000,
818 2500000, 3000000, 3500000, 4000000
821 static const __u8 acm_tty_size[] = {
825 static void acm_tty_set_termios(struct tty_struct *tty,
826 struct ktermios *termios_old)
828 struct acm *acm = tty->driver_data;
829 struct ktermios *termios = tty->termios;
830 struct usb_cdc_line_coding newline;
831 int newctrl = acm->ctrlout;
836 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
837 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
838 newline.bParityType = termios->c_cflag & PARENB ?
839 (termios->c_cflag & PARODD ? 1 : 2) +
840 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
841 newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4];
842 /* FIXME: Needs to clear unsupported bits in the termios */
843 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
845 if (!newline.dwDTERate) {
846 newline.dwDTERate = acm->line.dwDTERate;
847 newctrl &= ~ACM_CTRL_DTR;
849 newctrl |= ACM_CTRL_DTR;
851 if (newctrl != acm->ctrlout)
852 acm_set_control(acm, acm->ctrlout = newctrl);
854 if (memcmp(&acm->line, &newline, sizeof newline)) {
855 memcpy(&acm->line, &newline, sizeof newline);
856 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
858 le32_to_cpu(newline.dwDTERate),
859 newline.bCharFormat, newline.bParityType,
861 acm_set_line(acm, &acm->line);
866 * USB probe and disconnect routines.
869 /* Little helpers: write/read buffers free */
870 static void acm_write_buffers_free(struct acm *acm)
874 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
876 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
877 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
880 static void acm_read_buffers_free(struct acm *acm)
882 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
885 for (i = 0; i < acm->rx_buflimit; i++)
886 usb_free_coherent(usb_dev, acm->readsize,
887 acm->rb[i].base, acm->rb[i].dma);
890 /* Little helper: write buffers allocate */
891 static int acm_write_buffers_alloc(struct acm *acm)
896 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
897 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
903 usb_free_coherent(acm->dev, acm->writesize,
912 static int acm_probe(struct usb_interface *intf,
913 const struct usb_device_id *id)
915 struct usb_cdc_union_desc *union_header = NULL;
916 struct usb_cdc_country_functional_desc *cfd = NULL;
917 unsigned char *buffer = intf->altsetting->extra;
918 int buflen = intf->altsetting->extralen;
919 struct usb_interface *control_interface;
920 struct usb_interface *data_interface;
921 struct usb_endpoint_descriptor *epctrl = NULL;
922 struct usb_endpoint_descriptor *epread = NULL;
923 struct usb_endpoint_descriptor *epwrite = NULL;
924 struct usb_device *usb_dev = interface_to_usbdev(intf);
927 int ctrlsize, readsize;
929 u8 ac_management_function = 0;
930 u8 call_management_function = 0;
931 int call_interface_num = -1;
932 int data_interface_num;
933 unsigned long quirks;
936 int combined_interfaces = 0;
939 quirks = (unsigned long)id->driver_info;
940 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
942 /* handle quirks deadly to normal probing*/
943 if (quirks == NO_UNION_NORMAL) {
944 data_interface = usb_ifnum_to_if(usb_dev, 1);
945 control_interface = usb_ifnum_to_if(usb_dev, 0);
946 goto skip_normal_probe;
951 dev_err(&intf->dev, "Weird descriptor references\n");
956 if (intf->cur_altsetting->endpoint &&
957 intf->cur_altsetting->endpoint->extralen &&
958 intf->cur_altsetting->endpoint->extra) {
960 "Seeking extra descriptors on endpoint\n");
961 buflen = intf->cur_altsetting->endpoint->extralen;
962 buffer = intf->cur_altsetting->endpoint->extra;
965 "Zero length descriptor references\n");
971 if (buffer[1] != USB_DT_CS_INTERFACE) {
972 dev_err(&intf->dev, "skipping garbage\n");
977 case USB_CDC_UNION_TYPE: /* we've found it */
979 dev_err(&intf->dev, "More than one "
980 "union descriptor, skipping ...\n");
983 union_header = (struct usb_cdc_union_desc *)buffer;
985 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
986 cfd = (struct usb_cdc_country_functional_desc *)buffer;
988 case USB_CDC_HEADER_TYPE: /* maybe check version */
989 break; /* for now we ignore it */
990 case USB_CDC_ACM_TYPE:
991 ac_management_function = buffer[3];
993 case USB_CDC_CALL_MANAGEMENT_TYPE:
994 call_management_function = buffer[3];
995 call_interface_num = buffer[4];
996 if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
997 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1000 /* there are LOTS more CDC descriptors that
1001 * could legitimately be found here.
1003 dev_dbg(&intf->dev, "Ignoring descriptor: "
1004 "type %02x, length %d\n",
1005 buffer[2], buffer[0]);
1009 buflen -= buffer[0];
1010 buffer += buffer[0];
1013 if (!union_header) {
1014 if (call_interface_num > 0) {
1015 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
1016 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1017 control_interface = intf;
1019 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1020 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1023 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1024 combined_interfaces = 1;
1025 control_interface = data_interface = intf;
1026 goto look_for_collapsed_interface;
1030 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1031 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1032 if (!control_interface || !data_interface) {
1033 dev_dbg(&intf->dev, "no interfaces\n");
1038 if (data_interface_num != call_interface_num)
1039 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1041 if (control_interface == data_interface) {
1042 /* some broken devices designed for windows work this way */
1043 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1044 combined_interfaces = 1;
1045 /* a popular other OS doesn't use it */
1046 quirks |= NO_CAP_LINE;
1047 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1048 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1051 look_for_collapsed_interface:
1052 for (i = 0; i < 3; i++) {
1053 struct usb_endpoint_descriptor *ep;
1054 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1056 if (usb_endpoint_is_int_in(ep))
1058 else if (usb_endpoint_is_bulk_out(ep))
1060 else if (usb_endpoint_is_bulk_in(ep))
1065 if (!epctrl || !epread || !epwrite)
1068 goto made_compressed_probe;
1073 /*workaround for switched interfaces */
1074 if (data_interface->cur_altsetting->desc.bInterfaceClass
1075 != CDC_DATA_INTERFACE_TYPE) {
1076 if (control_interface->cur_altsetting->desc.bInterfaceClass
1077 == CDC_DATA_INTERFACE_TYPE) {
1078 struct usb_interface *t;
1080 "Your device has switched interfaces.\n");
1081 t = control_interface;
1082 control_interface = data_interface;
1089 /* Accept probe requests only for the control interface */
1090 if (!combined_interfaces && intf != control_interface)
1093 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1094 /* valid in this context */
1095 dev_dbg(&intf->dev, "The data interface isn't available\n");
1100 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
1103 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1104 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1105 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1108 /* workaround for switched endpoints */
1109 if (!usb_endpoint_dir_in(epread)) {
1110 /* descriptors are swapped */
1111 struct usb_endpoint_descriptor *t;
1113 "The data interface has switched endpoints\n");
1118 made_compressed_probe:
1119 dev_dbg(&intf->dev, "interfaces are valid\n");
1120 for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
1122 if (minor == ACM_TTY_MINORS) {
1123 dev_err(&intf->dev, "no more free acm devices\n");
1127 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1129 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1133 ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
1134 readsize = le16_to_cpu(epread->wMaxPacketSize) *
1135 (quirks == SINGLE_RX_URB ? 1 : 2);
1136 acm->combined_interfaces = combined_interfaces;
1137 acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
1138 acm->control = control_interface;
1139 acm->data = data_interface;
1142 acm->ctrl_caps = ac_management_function;
1143 if (quirks & NO_CAP_LINE)
1144 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1145 acm->ctrlsize = ctrlsize;
1146 acm->readsize = readsize;
1147 acm->rx_buflimit = num_rx_buf;
1148 acm->urb_task.func = acm_rx_tasklet;
1149 acm->urb_task.data = (unsigned long) acm;
1150 INIT_WORK(&acm->work, acm_softint);
1151 spin_lock_init(&acm->throttle_lock);
1152 spin_lock_init(&acm->write_lock);
1153 spin_lock_init(&acm->read_lock);
1154 mutex_init(&acm->mutex);
1155 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1156 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1158 acm->bInterval = epread->bInterval;
1159 tty_port_init(&acm->port);
1160 acm->port.ops = &acm_port_ops;
1162 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1164 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1167 acm->ctrl_buffer = buf;
1169 if (acm_write_buffers_alloc(acm) < 0) {
1170 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1174 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1175 if (!acm->ctrlurb) {
1176 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1179 for (i = 0; i < num_rx_buf; i++) {
1180 struct acm_rb *rb = &(acm->rb[i]);
1181 struct acm_ru *rcv = &(acm->ru[i]);
1183 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1186 dev_err(&intf->dev, "out of memory "
1187 "(read bufs usb_alloc_coherent)\n");
1191 rcv->urb = usb_alloc_urb(0, GFP_KERNEL);
1192 if (rcv->urb == NULL) {
1194 "out of memory (read urbs usb_alloc_urb)\n");
1198 rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1199 rcv->instance = acm;
1201 for (i = 0; i < ACM_NW; i++) {
1202 struct acm_wb *snd = &(acm->wb[i]);
1204 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1205 if (snd->urb == NULL) {
1207 "out of memory (write urbs usb_alloc_urb)\n");
1211 if (usb_endpoint_xfer_int(epwrite))
1212 usb_fill_int_urb(snd->urb, usb_dev,
1213 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1214 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1216 usb_fill_bulk_urb(snd->urb, usb_dev,
1217 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1218 NULL, acm->writesize, acm_write_bulk, snd);
1219 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1220 snd->instance = acm;
1223 usb_set_intfdata(intf, acm);
1225 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1229 if (cfd) { /* export the country data */
1230 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1231 if (!acm->country_codes)
1232 goto skip_countries;
1233 acm->country_code_size = cfd->bLength - 4;
1234 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1236 acm->country_rel_date = cfd->iCountryCodeRelDate;
1238 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1240 kfree(acm->country_codes);
1241 goto skip_countries;
1244 i = device_create_file(&intf->dev,
1245 &dev_attr_iCountryCodeRelDate);
1247 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
1248 kfree(acm->country_codes);
1249 goto skip_countries;
1254 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1255 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1256 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1257 /* works around buggy devices */
1258 epctrl->bInterval ? epctrl->bInterval : 0xff);
1259 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1260 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1262 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1264 acm_set_control(acm, acm->ctrlout);
1266 acm->line.dwDTERate = cpu_to_le32(9600);
1267 acm->line.bDataBits = 8;
1268 acm_set_line(acm, &acm->line);
1270 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1271 usb_set_intfdata(data_interface, acm);
1273 usb_get_intf(control_interface);
1274 tty_register_device(acm_tty_driver, minor, &control_interface->dev);
1276 acm_table[minor] = acm;
1280 for (i = 0; i < ACM_NW; i++)
1281 usb_free_urb(acm->wb[i].urb);
1283 for (i = 0; i < num_rx_buf; i++)
1284 usb_free_urb(acm->ru[i].urb);
1285 acm_read_buffers_free(acm);
1286 usb_free_urb(acm->ctrlurb);
1288 acm_write_buffers_free(acm);
1290 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1297 static void stop_data_traffic(struct acm *acm)
1301 dev_dbg(&acm->control->dev, "%s\n", __func__);
1303 tasklet_disable(&acm->urb_task);
1305 usb_kill_urb(acm->ctrlurb);
1306 for (i = 0; i < ACM_NW; i++)
1307 usb_kill_urb(acm->wb[i].urb);
1308 for (i = 0; i < acm->rx_buflimit; i++)
1309 usb_kill_urb(acm->ru[i].urb);
1311 tasklet_enable(&acm->urb_task);
1313 cancel_work_sync(&acm->work);
1316 static void acm_disconnect(struct usb_interface *intf)
1318 struct acm *acm = usb_get_intfdata(intf);
1319 struct usb_device *usb_dev = interface_to_usbdev(intf);
1320 struct tty_struct *tty;
1322 /* sibling interface is already cleaning up */
1326 mutex_lock(&open_mutex);
1327 if (acm->country_codes) {
1328 device_remove_file(&acm->control->dev,
1329 &dev_attr_wCountryCodes);
1330 device_remove_file(&acm->control->dev,
1331 &dev_attr_iCountryCodeRelDate);
1333 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1335 usb_set_intfdata(acm->control, NULL);
1336 usb_set_intfdata(acm->data, NULL);
1338 stop_data_traffic(acm);
1340 acm_write_buffers_free(acm);
1341 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer,
1343 acm_read_buffers_free(acm);
1345 if (!acm->combined_interfaces)
1346 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1347 acm->data : acm->control);
1349 if (acm->port.count == 0) {
1350 acm_tty_unregister(acm);
1351 mutex_unlock(&open_mutex);
1355 mutex_unlock(&open_mutex);
1356 tty = tty_port_tty_get(&acm->port);
1364 static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1366 struct acm *acm = usb_get_intfdata(intf);
1369 if (message.event & PM_EVENT_AUTO) {
1372 spin_lock_irq(&acm->read_lock);
1373 spin_lock(&acm->write_lock);
1374 b = acm->processing + acm->transmitting;
1375 spin_unlock(&acm->write_lock);
1376 spin_unlock_irq(&acm->read_lock);
1381 spin_lock_irq(&acm->read_lock);
1382 spin_lock(&acm->write_lock);
1383 cnt = acm->susp_count++;
1384 spin_unlock(&acm->write_lock);
1385 spin_unlock_irq(&acm->read_lock);
1390 we treat opened interfaces differently,
1391 we must guard against open
1393 mutex_lock(&acm->mutex);
1395 if (acm->port.count)
1396 stop_data_traffic(acm);
1398 mutex_unlock(&acm->mutex);
1402 static int acm_resume(struct usb_interface *intf)
1404 struct acm *acm = usb_get_intfdata(intf);
1409 spin_lock_irq(&acm->read_lock);
1410 acm->susp_count -= 1;
1411 cnt = acm->susp_count;
1412 spin_unlock_irq(&acm->read_lock);
1417 mutex_lock(&acm->mutex);
1418 if (acm->port.count) {
1419 rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
1421 spin_lock_irq(&acm->write_lock);
1422 if (acm->delayed_wb) {
1423 wb = acm->delayed_wb;
1424 acm->delayed_wb = NULL;
1425 spin_unlock_irq(&acm->write_lock);
1426 acm_start_wb(acm, wb);
1428 spin_unlock_irq(&acm->write_lock);
1432 * delayed error checking because we must
1433 * do the write path at all cost
1438 tasklet_schedule(&acm->urb_task);
1442 mutex_unlock(&acm->mutex);
1446 static int acm_reset_resume(struct usb_interface *intf)
1448 struct acm *acm = usb_get_intfdata(intf);
1449 struct tty_struct *tty;
1451 mutex_lock(&acm->mutex);
1452 if (acm->port.count) {
1453 tty = tty_port_tty_get(&acm->port);
1459 mutex_unlock(&acm->mutex);
1460 return acm_resume(intf);
1463 #endif /* CONFIG_PM */
1465 #define NOKIA_PCSUITE_ACM_INFO(x) \
1466 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1467 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1468 USB_CDC_ACM_PROTO_VENDOR)
1470 #define SAMSUNG_PCSUITE_ACM_INFO(x) \
1471 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1472 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1473 USB_CDC_ACM_PROTO_VENDOR)
1476 * USB driver structure.
1479 static const struct usb_device_id acm_ids[] = {
1480 /* quirky and broken devices */
1481 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1482 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1484 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1485 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1487 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1488 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1490 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1491 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1493 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1494 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1496 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1497 .driver_info = SINGLE_RX_URB,
1499 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1500 .driver_info = SINGLE_RX_URB, /* firmware bug */
1502 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1503 .driver_info = SINGLE_RX_URB, /* firmware bug */
1505 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1506 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1508 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1509 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1511 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1512 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1514 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1515 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1517 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1518 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1520 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1522 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1523 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1524 data interface instead of
1525 communications interface.
1526 Maybe we should define a new
1529 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1530 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1532 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1533 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1536 /* Nokia S60 phones expose two ACM channels. The first is
1537 * a modem and is picked up by the standard AT-command
1538 * information below. The second is 'vendor-specific' but
1539 * is treated as a serial device at the S60 end, so we want
1540 * to expose it on Linux too. */
1541 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1542 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1543 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1544 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1545 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1546 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1547 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1548 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1549 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1550 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1551 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1552 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1553 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1554 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1555 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1556 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1557 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1558 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1559 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1560 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1561 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1562 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1563 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1564 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1565 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1566 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1567 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1568 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1569 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1570 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1571 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1572 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1573 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1574 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1575 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1576 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1577 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1578 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1579 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1580 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1581 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1582 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1583 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
1584 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
1585 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1586 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1587 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1588 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1589 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1590 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1591 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1592 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1593 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1594 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
1595 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
1596 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
1598 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1600 /* Support Lego NXT using pbLua firmware */
1601 { USB_DEVICE(0x0694, 0xff00),
1602 .driver_info = NOT_A_MODEM,
1605 /* control interfaces without any protocol set */
1606 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1607 USB_CDC_PROTO_NONE) },
1609 /* control interfaces with various AT-command sets */
1610 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1611 USB_CDC_ACM_PROTO_AT_V25TER) },
1612 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1613 USB_CDC_ACM_PROTO_AT_PCCA101) },
1614 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1615 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1616 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1617 USB_CDC_ACM_PROTO_AT_GSM) },
1618 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1619 USB_CDC_ACM_PROTO_AT_3G) },
1620 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1621 USB_CDC_ACM_PROTO_AT_CDMA) },
1626 MODULE_DEVICE_TABLE(usb, acm_ids);
1628 static struct usb_driver acm_driver = {
1631 .disconnect = acm_disconnect,
1633 .suspend = acm_suspend,
1634 .resume = acm_resume,
1635 .reset_resume = acm_reset_resume,
1637 .id_table = acm_ids,
1639 .supports_autosuspend = 1,
1644 * TTY driver structures.
1647 static const struct tty_operations acm_ops = {
1648 .open = acm_tty_open,
1649 .close = acm_tty_close,
1650 .hangup = acm_tty_hangup,
1651 .write = acm_tty_write,
1652 .write_room = acm_tty_write_room,
1653 .ioctl = acm_tty_ioctl,
1654 .throttle = acm_tty_throttle,
1655 .unthrottle = acm_tty_unthrottle,
1656 .chars_in_buffer = acm_tty_chars_in_buffer,
1657 .break_ctl = acm_tty_break_ctl,
1658 .set_termios = acm_tty_set_termios,
1659 .tiocmget = acm_tty_tiocmget,
1660 .tiocmset = acm_tty_tiocmset,
1667 static int __init acm_init(void)
1670 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1671 if (!acm_tty_driver)
1673 acm_tty_driver->owner = THIS_MODULE,
1674 acm_tty_driver->driver_name = "acm",
1675 acm_tty_driver->name = "ttyACM",
1676 acm_tty_driver->major = ACM_TTY_MAJOR,
1677 acm_tty_driver->minor_start = 0,
1678 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1679 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
1680 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1681 acm_tty_driver->init_termios = tty_std_termios;
1682 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1684 tty_set_operations(acm_tty_driver, &acm_ops);
1686 retval = tty_register_driver(acm_tty_driver);
1688 put_tty_driver(acm_tty_driver);
1692 retval = usb_register(&acm_driver);
1694 tty_unregister_driver(acm_tty_driver);
1695 put_tty_driver(acm_tty_driver);
1699 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1704 static void __exit acm_exit(void)
1706 usb_deregister(&acm_driver);
1707 tty_unregister_driver(acm_tty_driver);
1708 put_tty_driver(acm_tty_driver);
1711 module_init(acm_init);
1712 module_exit(acm_exit);
1714 MODULE_AUTHOR(DRIVER_AUTHOR);
1715 MODULE_DESCRIPTION(DRIVER_DESC);
1716 MODULE_LICENSE("GPL");
1717 MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);