2 * USB driver for Gigaset 307x directly or using M105 Data.
4 * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>
5 * and Hansjoerg Lipp <hjlipp@web.de>.
7 * This driver was derived from the USB skeleton driver by
8 * Greg Kroah-Hartman <greg@kroah.com>
10 * =====================================================================
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 * =====================================================================
20 #include <linux/errno.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/usb.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
27 /* Version Information */
28 #define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>"
29 #define DRIVER_DESC "USB Driver for Gigaset 307x using M105"
31 /* Module parameters */
33 static int startmode = SM_ISDN;
34 static int cidmode = 1;
36 module_param(startmode, int, S_IRUGO);
37 module_param(cidmode, int, S_IRUGO);
38 MODULE_PARM_DESC(startmode, "start in isdn4linux mode");
39 MODULE_PARM_DESC(cidmode, "Call-ID mode");
41 #define GIGASET_MINORS 1
42 #define GIGASET_MINOR 8
43 #define GIGASET_MODULENAME "usb_gigaset"
44 #define GIGASET_DEVFSNAME "gig/usb/"
45 #define GIGASET_DEVNAME "ttyGU"
47 #define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256
49 /* Values for the Gigaset M105 Data */
50 #define USB_M105_VENDOR_ID 0x0681
51 #define USB_M105_PRODUCT_ID 0x0009
53 /* table of devices that work with this driver */
54 static struct usb_device_id gigaset_table [] = {
55 { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) },
56 { } /* Terminating entry */
59 MODULE_DEVICE_TABLE(usb, gigaset_table);
62 * Control requests (empty fields: 00)
64 * RT|RQ|VALUE|INDEX|LEN |DATA
67 * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:?
69 * Get device information/status (llll: 0x200 and 0x40 seen).
70 * Real size: I only saw MIN(llll,0x64).
71 * Contents: seems to be always the same...
72 * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes)
73 * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0"
77 * Initialize/reset device ?
79 * ? (xx=00 or 01; 01 on start, 00 on close)
81 * Set/clear flags vv=value, mm=mask (see RQ 08)
83 * Used before the following configuration requests are issued
84 * (with xx=0x0f). I've seen other values<0xf, though.
86 * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1.
88 * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity
89 * [ 0x30: m, 0x40: s ]
90 * [s: 0: 1 stop bit; 1: 1.5; 2: 2]
91 * bb: bits/byte (seen 7 and 8)
92 * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00
94 * Initialization: 01, 40, 00, 00
95 * Open device: 00 40, 00, 00
96 * yy and zz seem to be equal, either 0x00 or 0x0a
97 * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80)
98 * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13
99 * Used after every "configuration sequence" (RQ 12, RQs 01/03/13).
100 * xx is usually 0x00 but was 0x7e before starting data transfer
101 * in unimodem mode. So, this might be an array of characters that need
102 * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S.
104 * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two
108 static int gigaset_probe(struct usb_interface *interface,
109 const struct usb_device_id *id);
110 static void gigaset_disconnect(struct usb_interface *interface);
112 static struct gigaset_driver *driver = NULL;
113 static struct cardstate *cardstate = NULL;
115 /* usb specific object needed to register this driver with the usb subsystem */
116 static struct usb_driver gigaset_usb_driver = {
117 .name = GIGASET_MODULENAME,
118 .probe = gigaset_probe,
119 .disconnect = gigaset_disconnect,
120 .id_table = gigaset_table,
123 struct usb_cardstate {
124 struct usb_device *udev; /* usb device pointer */
125 struct usb_interface *interface; /* interface for this device */
126 atomic_t busy; /* bulk output in progress */
129 unsigned char *bulk_out_buffer;
131 __u8 bulk_out_endpointAddr;
132 struct urb *bulk_out_urb;
136 struct urb *read_urb;
137 __u8 int_in_endpointAddr;
139 char bchars[6]; /* for request 0x19 */
142 struct usb_bc_state {};
144 static inline unsigned tiocm_to_gigaset(unsigned state)
146 return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0);
149 #ifdef CONFIG_GIGASET_UNDOCREQ
150 /* WARNING: EXPERIMENTAL! */
151 static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
154 struct usb_device *udev = cs->hw.usb->udev;
158 mask = tiocm_to_gigaset(old_state ^ new_state);
159 val = tiocm_to_gigaset(new_state);
161 gig_dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask);
162 // don't use this in an interrupt/BH
163 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 7, 0x41,
164 (val & 0xff) | ((mask & 0xff) << 8), 0,
165 NULL, 0, 2000 /* timeout? */);
172 static int set_value(struct cardstate *cs, u8 req, u16 val)
174 struct usb_device *udev = cs->hw.usb->udev;
177 gig_dbg(DEBUG_USBREQ, "request %02x (%04x)",
178 (unsigned)req, (unsigned)val);
179 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x12, 0x41,
180 0xf /*?*/, 0, NULL, 0, 2000 /*?*/);
181 /* no idea what this does */
183 dev_err(&udev->dev, "error %d on request 0x12\n", -r);
187 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), req, 0x41,
188 val, 0, NULL, 0, 2000 /*?*/);
190 dev_err(&udev->dev, "error %d on request 0x%02x\n",
193 r2 = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
194 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/);
196 dev_err(&udev->dev, "error %d on request 0x19\n", -r2);
198 return r < 0 ? r : (r2 < 0 ? r2 : 0);
201 /* WARNING: HIGHLY EXPERIMENTAL! */
202 // don't use this in an interrupt/BH
203 static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
212 case B300: rate = 300; break;
213 case B600: rate = 600; break;
214 case B1200: rate = 1200; break;
215 case B2400: rate = 2400; break;
216 case B4800: rate = 4800; break;
217 case B9600: rate = 9600; break;
218 case B19200: rate = 19200; break;
219 case B38400: rate = 38400; break;
220 case B57600: rate = 57600; break;
221 case B115200: rate = 115200; break;
224 dev_err(cs->dev, "unsupported baudrate request 0x%x,"
225 " using default of B9600\n", cflag);
228 val = 0x383fff / rate + 1;
230 return set_value(cs, 1, val);
233 /* WARNING: HIGHLY EXPERIMENTAL! */
234 // don't use this in an interrupt/BH
235 static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
241 val |= (cflag & PARODD) ? 0x10 : 0x20;
243 /* set the number of data bits */
244 switch (cflag & CSIZE) {
246 val |= 5 << 8; break;
248 val |= 6 << 8; break;
250 val |= 7 << 8; break;
252 val |= 8 << 8; break;
254 dev_err(cs->dev, "CSIZE was not CS5-CS8, using default of 8\n");
259 /* set the number of stop bits */
260 if (cflag & CSTOPB) {
261 if ((cflag & CSIZE) == CS5)
262 val |= 1; /* 1.5 stop bits */ //FIXME is this okay?
264 val |= 2; /* 2 stop bits */
267 return set_value(cs, 3, val);
271 static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
277 static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
282 static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
289 /*================================================================================================================*/
290 static int gigaset_init_bchannel(struct bc_state *bcs)
292 /* nothing to do for M10x */
293 gigaset_bchannel_up(bcs);
297 static int gigaset_close_bchannel(struct bc_state *bcs)
299 /* nothing to do for M10x */
300 gigaset_bchannel_down(bcs);
304 static int write_modem(struct cardstate *cs);
305 static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb);
308 /* Write tasklet handler: Continue sending current skb, or send command, or
309 * start sending an skb from the send queue.
311 static void gigaset_modem_fill(unsigned long data)
313 struct cardstate *cs = (struct cardstate *) data;
314 struct bc_state *bcs = &cs->bcs[0]; /* only one channel */
319 gig_dbg(DEBUG_OUTPUT, "modem_fill");
321 if (atomic_read(&cs->hw.usb->busy)) {
322 gig_dbg(DEBUG_OUTPUT, "modem_fill: busy");
328 if (!bcs->tx_skb) { /* no skb is being sent */
329 spin_lock_irqsave(&cs->cmdlock, flags);
331 spin_unlock_irqrestore(&cs->cmdlock, flags);
332 if (cb) { /* commands to send? */
333 gig_dbg(DEBUG_OUTPUT, "modem_fill: cb");
334 if (send_cb(cs, cb) < 0) {
335 gig_dbg(DEBUG_OUTPUT,
336 "modem_fill: send_cb failed");
337 again = 1; /* no callback will be
340 } else { /* skbs to send? */
341 bcs->tx_skb = skb_dequeue(&bcs->squeue);
344 "Dequeued skb (Adr: %lx)!",
345 (unsigned long) bcs->tx_skb);
350 gig_dbg(DEBUG_OUTPUT, "modem_fill: tx_skb");
351 if (write_modem(cs) < 0) {
352 gig_dbg(DEBUG_OUTPUT,
353 "modem_fill: write_modem failed");
354 // FIXME should we tell the LL?
355 again = 1; /* no callback will be called! */
362 * gigaset_read_int_callback
364 * It is called if the data was received from the device.
366 static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
370 struct cardstate *cs;
373 struct inbuf_t *inbuf;
376 inbuf = (struct inbuf_t *) urb->context;
381 if (!atomic_read(&cs->connected)) {
382 err("%s: disconnected", __func__);
387 numbytes = urb->actual_length;
393 "%s: There was no leading 0, but 0x%02x!\n",
394 __func__, (unsigned) *src);
395 ++src; /* skip leading 0x00 */
397 if (gigaset_fill_inbuf(inbuf, src, numbytes)) {
398 gig_dbg(DEBUG_INTR, "%s-->BH", __func__);
399 gigaset_schedule_event(inbuf->cs);
402 gig_dbg(DEBUG_INTR, "Received zero block length");
405 /* The urb might have been killed. */
406 gig_dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d",
407 __func__, urb->status);
408 if (urb->status != -ENOENT) /* not killed */
413 r = usb_submit_urb(urb, SLAB_ATOMIC);
415 dev_err(cs->dev, "error %d when resubmitting urb.\n",
421 /* This callback routine is called when data was transmitted to the device. */
422 static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
424 struct cardstate *cs = (struct cardstate *) urb->context;
427 #ifdef CONFIG_GIGASET_DEBUG
428 if (!atomic_read(&cs->connected)) {
429 err("%s: not connected", __func__);
434 dev_err(cs->dev, "bulk transfer failed (status %d)\n",
436 /* That's all we can do. Communication problems
437 are handled by timeouts or network protocols. */
439 atomic_set(&cs->hw.usb->busy, 0);
440 tasklet_schedule(&cs->write_tasklet);
443 static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
445 struct cmdbuf_t *tcb;
448 int status = -ENOENT; // FIXME
449 struct usb_cardstate *ucs = cs->hw.usb;
455 spin_lock_irqsave(&cs->cmdlock, flags);
456 cs->cmdbytes -= cs->curlen;
457 gig_dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left",
458 cs->curlen, cs->cmdbytes);
459 cs->cmdbuf = cb = cb->next;
462 cs->curlen = cb->len;
464 cs->lastcmdbuf = NULL;
467 spin_unlock_irqrestore(&cs->cmdlock, flags);
469 if (tcb->wake_tasklet)
470 tasklet_schedule(tcb->wake_tasklet);
474 count = min(cb->len, ucs->bulk_out_size);
475 usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
476 usb_sndbulkpipe(ucs->udev,
477 ucs->bulk_out_endpointAddr & 0x0f),
478 cb->buf + cb->offset, count,
479 gigaset_write_bulk_callback, cs);
483 atomic_set(&ucs->busy, 1);
484 gig_dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count);
486 status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC);
488 atomic_set(&ucs->busy, 0);
490 "could not submit urb (error %d)\n",
492 cb->len = 0; /* skip urb => remove cb+wakeup
493 in next loop cycle */
496 } while (cb && status); /* next command on error */
501 /* Send command to device. */
502 static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
503 int len, struct tasklet_struct *wake_tasklet)
508 gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ?
509 DEBUG_TRANSCMD : DEBUG_LOCKCMD,
510 "CMD Transmit", len, buf, 0);
512 if (!atomic_read(&cs->connected)) {
513 err("%s: not connected", __func__);
520 if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) {
521 dev_err(cs->dev, "%s: out of memory\n", __func__);
525 memcpy(cb->buf, buf, len);
529 cb->wake_tasklet = wake_tasklet;
531 spin_lock_irqsave(&cs->cmdlock, flags);
532 cb->prev = cs->lastcmdbuf;
534 cs->lastcmdbuf->next = cb;
541 spin_unlock_irqrestore(&cs->cmdlock, flags);
543 tasklet_schedule(&cs->write_tasklet);
547 static int gigaset_write_room(struct cardstate *cs)
552 spin_lock_irqsave(&cs->cmdlock, flags);
553 bytes = cs->cmdbytes;
554 spin_unlock_irqrestore(&cs->cmdlock, flags);
556 return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0;
559 static int gigaset_chars_in_buffer(struct cardstate *cs)
564 static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
566 #ifdef CONFIG_GIGASET_UNDOCREQ
567 struct usb_device *udev = cs->hw.usb->udev;
569 gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0);
570 memcpy(cs->hw.usb->bchars, buf, 6);
571 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
572 0, 0, &buf, 6, 2000);
578 static int gigaset_freebcshw(struct bc_state *bcs)
587 /* Initialize the b-channel structure */
588 static int gigaset_initbcshw(struct bc_state *bcs)
590 bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL);
597 static void gigaset_reinitbcshw(struct bc_state *bcs)
601 static void gigaset_freecshw(struct cardstate *cs)
603 tasklet_kill(&cs->write_tasklet);
607 static int gigaset_initcshw(struct cardstate *cs)
609 struct usb_cardstate *ucs;
612 kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL);
620 ucs->bchars[4] = 0x11;
621 ucs->bchars[5] = 0x13;
622 ucs->bulk_out_buffer = NULL;
623 ucs->bulk_out_urb = NULL;
624 //ucs->urb_cmd_out = NULL;
625 ucs->read_urb = NULL;
626 tasklet_init(&cs->write_tasklet,
627 &gigaset_modem_fill, (unsigned long) cs);
632 /* Send data from current skb to the device. */
633 static int write_modem(struct cardstate *cs)
637 struct bc_state *bcs = &cs->bcs[0]; /* only one channel */
638 struct usb_cardstate *ucs = cs->hw.usb;
640 IFNULLRETVAL(bcs->tx_skb, -EINVAL);
642 gig_dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len);
645 IFNULLGOTO(ucs->bulk_out_buffer, error);
646 IFNULLGOTO(ucs->bulk_out_urb, error);
649 if (!bcs->tx_skb->len) {
650 dev_kfree_skb_any(bcs->tx_skb);
655 /* Copy data to bulk out buffer and // FIXME copying not necessary
658 count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size);
659 memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count);
660 skb_pull(bcs->tx_skb, count);
662 usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
663 usb_sndbulkpipe(ucs->udev,
664 ucs->bulk_out_endpointAddr & 0x0f),
665 ucs->bulk_out_buffer, count,
666 gigaset_write_bulk_callback, cs);
667 atomic_set(&ucs->busy, 1);
668 gig_dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count);
670 ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC);
672 dev_err(cs->dev, "could not submit urb (error %d)\n", -ret);
673 atomic_set(&ucs->busy, 0);
675 if (!bcs->tx_skb->len) {
676 /* skb sent completely */
677 gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0?
679 gig_dbg(DEBUG_INTR, "kfree skb (Adr: %lx)!",
680 (unsigned long) bcs->tx_skb);
681 dev_kfree_skb_any(bcs->tx_skb);
687 dev_kfree_skb_any(bcs->tx_skb);
693 static int gigaset_probe(struct usb_interface *interface,
694 const struct usb_device_id *id)
697 struct usb_device *udev = interface_to_usbdev(interface);
699 struct usb_host_interface *hostif;
700 struct cardstate *cs = NULL;
701 struct usb_cardstate *ucs = NULL;
702 struct usb_endpoint_descriptor *endpoint;
707 "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)",
708 __func__, le16_to_cpu(udev->descriptor.idVendor),
709 le16_to_cpu(udev->descriptor.idProduct));
711 retval = -ENODEV; //FIXME
713 /* See if the device offered us matches what we can accept */
714 if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) ||
715 (le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID)))
718 /* this starts to become ascii art... */
719 hostif = interface->cur_altsetting;
720 alt = hostif->desc.bAlternateSetting;
721 ifnum = hostif->desc.bInterfaceNumber; // FIXME ?
723 if (alt != 0 || ifnum != 0) {
724 dev_warn(&udev->dev, "ifnum %d, alt %d\n", ifnum, alt);
728 /* Reject application specific intefaces
731 if (hostif->desc.bInterfaceClass != 255) {
733 "%s: Device matched but iface_desc[%d]->bInterfaceClass==%d!\n",
734 __func__, ifnum, hostif->desc.bInterfaceClass);
738 dev_info(&udev->dev, "%s: Device matched ... !\n", __func__);
740 cs = gigaset_getunassignedcs(driver);
742 dev_warn(&udev->dev, "no free cardstate\n");
747 /* save off device structure ptrs for later use */
750 ucs->interface = interface;
751 cs->dev = &interface->dev;
753 /* save address of controller structure */
754 usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs);
756 endpoint = &hostif->endpoint[0].desc;
758 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
759 ucs->bulk_out_size = buffer_size;
760 ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress;
761 ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
762 if (!ucs->bulk_out_buffer) {
763 dev_err(cs->dev, "Couldn't allocate bulk_out_buffer\n");
768 ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL);
769 if (!ucs->bulk_out_urb) {
770 dev_err(cs->dev, "Couldn't allocate bulk_out_urb\n");
775 endpoint = &hostif->endpoint[1].desc;
777 atomic_set(&ucs->busy, 0);
779 ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL);
780 if (!ucs->read_urb) {
781 dev_err(cs->dev, "No free urbs available\n");
785 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
786 ucs->rcvbuf_size = buffer_size;
787 ucs->int_in_endpointAddr = endpoint->bEndpointAddress;
788 cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL);
789 if (!cs->inbuf[0].rcvbuf) {
790 dev_err(cs->dev, "Couldn't allocate rcvbuf\n");
794 /* Fill the interrupt urb and send it to the core */
795 usb_fill_int_urb(ucs->read_urb, udev,
797 endpoint->bEndpointAddress & 0x0f),
798 cs->inbuf[0].rcvbuf, buffer_size,
799 gigaset_read_int_callback,
800 cs->inbuf + 0, endpoint->bInterval);
802 retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL);
804 dev_err(cs->dev, "Could not submit URB (error %d)\n", -retval);
808 /* tell common part that the device is ready */
809 if (startmode == SM_LOCKED)
810 atomic_set(&cs->mstate, MS_LOCKED);
812 if (!gigaset_start(cs)) {
813 tasklet_kill(&cs->write_tasklet);
814 retval = -ENODEV; //FIXME
821 usb_kill_urb(ucs->read_urb);
822 kfree(ucs->bulk_out_buffer);
823 if (ucs->bulk_out_urb != NULL)
824 usb_free_urb(ucs->bulk_out_urb);
825 kfree(cs->inbuf[0].rcvbuf);
826 if (ucs->read_urb != NULL)
827 usb_free_urb(ucs->read_urb);
828 usb_set_intfdata(interface, NULL);
829 ucs->read_urb = ucs->bulk_out_urb = NULL;
830 cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
831 usb_put_dev(ucs->udev);
833 ucs->interface = NULL;
834 gigaset_unassign(cs);
841 static void gigaset_disconnect(struct usb_interface *interface)
843 struct cardstate *cs;
844 struct usb_cardstate *ucs;
846 cs = usb_get_intfdata(interface);
848 usb_kill_urb(ucs->read_urb);
852 usb_set_intfdata(interface, NULL);
853 tasklet_kill(&cs->write_tasklet);
855 usb_kill_urb(ucs->bulk_out_urb); /* FIXME: only if active? */
857 kfree(ucs->bulk_out_buffer);
858 if (ucs->bulk_out_urb != NULL)
859 usb_free_urb(ucs->bulk_out_urb);
860 kfree(cs->inbuf[0].rcvbuf);
861 if (ucs->read_urb != NULL)
862 usb_free_urb(ucs->read_urb);
863 ucs->read_urb = ucs->bulk_out_urb = NULL;
864 cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
866 usb_put_dev(ucs->udev);
867 ucs->interface = NULL;
870 gigaset_unassign(cs);
873 static struct gigaset_ops ops = {
876 gigaset_chars_in_buffer,
878 gigaset_init_bchannel,
879 gigaset_close_bchannel,
885 gigaset_set_modem_ctrl,
887 gigaset_set_line_ctrl,
888 gigaset_m10x_send_skb,
894 * This function is called while kernel-module is loaded
896 static int __init usb_gigaset_init(void)
900 /* allocate memory for our driver state and intialize it */
901 if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
902 GIGASET_MODULENAME, GIGASET_DEVNAME,
903 GIGASET_DEVFSNAME, &ops,
904 THIS_MODULE)) == NULL)
907 /* allocate memory for our device state and intialize it */
908 cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME);
912 /* register this driver with the USB subsystem */
913 result = usb_register(&gigaset_usb_driver);
915 err("usb_gigaset: usb_register failed (error %d)",
924 error: if (cardstate)
925 gigaset_freecs(cardstate);
928 gigaset_freedriver(driver);
936 * This function is called while unloading the kernel-module
938 static void __exit usb_gigaset_exit(void)
940 gigaset_blockdriver(driver); /* => probe will fail
941 * => no gigaset_start any more
944 gigaset_shutdown(cardstate);
945 /* from now on, no isdn callback should be possible */
947 /* deregister this driver with the USB subsystem */
948 usb_deregister(&gigaset_usb_driver);
949 /* this will call the disconnect-callback */
950 /* from now on, no disconnect/probe callback should be running */
952 gigaset_freecs(cardstate);
954 gigaset_freedriver(driver);
959 module_init(usb_gigaset_init);
960 module_exit(usb_gigaset_exit);
962 MODULE_AUTHOR(DRIVER_AUTHOR);
963 MODULE_DESCRIPTION(DRIVER_DESC);
965 MODULE_LICENSE("GPL");