| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hansjoerg Lipp | 2981 | 72.71% | 1 | 2.86% |
| Tilman Schmidt | 1049 | 25.59% | 26 | 74.29% |
| Kees Cook | 48 | 1.17% | 1 | 2.86% |
| Christoph Lameter | 6 | 0.15% | 2 | 5.71% |
| Sage Sharp | 5 | 0.12% | 1 | 2.86% |
| Arnaldo Carvalho de Melo | 4 | 0.10% | 1 | 2.86% |
| Himangi Saraogi | 3 | 0.07% | 1 | 2.86% |
| Uwe Kleine-König | 2 | 0.05% | 1 | 2.86% |
| Alexey Dobriyan | 2 | 0.05% | 1 | 2.86% |
| Total | 4100 | 35 |
/* * USB driver for Gigaset 307x directly or using M105 Data. * * Copyright (c) 2001 by Stefan Eilers * and Hansjoerg Lipp <hjlipp@web.de>. * * This driver was derived from the USB skeleton driver by * Greg Kroah-Hartman <greg@kroah.com> * * ===================================================================== * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * ===================================================================== */ #include "gigaset.h" #include <linux/usb.h> #include <linux/module.h> #include <linux/moduleparam.h> /* Version Information */ #define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers" #define DRIVER_DESC "USB Driver for Gigaset 307x using M105" /* Module parameters */ static int startmode = SM_ISDN; static int cidmode = 1; module_param(startmode, int, S_IRUGO); module_param(cidmode, int, S_IRUGO); MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); MODULE_PARM_DESC(cidmode, "Call-ID mode"); #define GIGASET_MINORS 1 #define GIGASET_MINOR 8 #define GIGASET_MODULENAME "usb_gigaset" #define GIGASET_DEVNAME "ttyGU" /* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */ #define IF_WRITEBUF 264 /* Values for the Gigaset M105 Data */ #define USB_M105_VENDOR_ID 0x0681 #define USB_M105_PRODUCT_ID 0x0009 /* table of devices that work with this driver */ static const struct usb_device_id gigaset_table[] = { { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, gigaset_table); /* * Control requests (empty fields: 00) * * RT|RQ|VALUE|INDEX|LEN |DATA * In: * C1 08 01 * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:? * C1 0F ll ll * Get device information/status (llll: 0x200 and 0x40 seen). * Real size: I only saw MIN(llll,0x64). * Contents: seems to be always the same... * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes) * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0" * rest: ? * Out: * 41 11 * Initialize/reset device ? * 41 00 xx 00 * ? (xx=00 or 01; 01 on start, 00 on close) * 41 07 vv mm * Set/clear flags vv=value, mm=mask (see RQ 08) * 41 12 xx * Used before the following configuration requests are issued * (with xx=0x0f). I've seen other values<0xf, though. * 41 01 xx xx * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1. * 41 03 ps bb * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity * [ 0x30: m, 0x40: s ] * [s: 0: 1 stop bit; 1: 1.5; 2: 2] * bb: bits/byte (seen 7 and 8) * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00 * ?? * Initialization: 01, 40, 00, 00 * Open device: 00 40, 00, 00 * yy and zz seem to be equal, either 0x00 or 0x0a * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80) * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13 * Used after every "configuration sequence" (RQ 12, RQs 01/03/13). * xx is usually 0x00 but was 0x7e before starting data transfer * in unimodem mode. So, this might be an array of characters that * need special treatment ("commit all bufferd data"?), 11=^Q, 13=^S. * * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two * flags per packet. */ /* functions called if a device of this driver is connected/disconnected */ static int gigaset_probe(struct usb_interface *interface, const struct usb_device_id *id); static void gigaset_disconnect(struct usb_interface *interface); /* functions called before/after suspend */ static int gigaset_suspend(struct usb_interface *intf, pm_message_t message); static int gigaset_resume(struct usb_interface *intf); static int gigaset_pre_reset(struct usb_interface *intf); static struct gigaset_driver *driver; /* usb specific object needed to register this driver with the usb subsystem */ static struct usb_driver gigaset_usb_driver = { .name = GIGASET_MODULENAME, .probe = gigaset_probe, .disconnect = gigaset_disconnect, .id_table = gigaset_table, .suspend = gigaset_suspend, .resume = gigaset_resume, .reset_resume = gigaset_resume, .pre_reset = gigaset_pre_reset, .post_reset = gigaset_resume, .disable_hub_initiated_lpm = 1, }; struct usb_cardstate { struct usb_device *udev; /* usb device pointer */ struct usb_interface *interface; /* interface for this device */ int busy; /* bulk output in progress */ /* Output buffer */ unsigned char *bulk_out_buffer; int bulk_out_size; int bulk_out_epnum; struct urb *bulk_out_urb; /* Input buffer */ unsigned char *rcvbuf; int rcvbuf_size; struct urb *read_urb; char bchars[6]; /* for request 0x19 */ }; static inline unsigned tiocm_to_gigaset(unsigned state) { return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); } static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, unsigned new_state) { struct usb_device *udev = cs->hw.usb->udev; unsigned mask, val; int r; mask = tiocm_to_gigaset(old_state ^ new_state); val = tiocm_to_gigaset(new_state); gig_dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 7, 0x41, (val & 0xff) | ((mask & 0xff) << 8), 0, NULL, 0, 2000 /* timeout? */); if (r < 0) return r; return 0; } /* * Set M105 configuration value * using undocumented device commands reverse engineered from USB traces * of the Siemens Windows driver */ static int set_value(struct cardstate *cs, u8 req, u16 val) { struct usb_device *udev = cs->hw.usb->udev; int r, r2; gig_dbg(DEBUG_USBREQ, "request %02x (%04x)", (unsigned)req, (unsigned)val); r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x12, 0x41, 0xf /*?*/, 0, NULL, 0, 2000 /*?*/); /* no idea what this does */ if (r < 0) { dev_err(&udev->dev, "error %d on request 0x12\n", -r); return r; } r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), req, 0x41, val, 0, NULL, 0, 2000 /*?*/); if (r < 0) dev_err(&udev->dev, "error %d on request 0x%02x\n", -r, (unsigned)req); r2 = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/); if (r2 < 0) dev_err(&udev->dev, "error %d on request 0x19\n", -r2); return r < 0 ? r : (r2 < 0 ? r2 : 0); } /* * set the baud rate on the internal serial adapter * using the undocumented parameter setting command */ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) { u16 val; u32 rate; cflag &= CBAUD; switch (cflag) { case B300: rate = 300; break; case B600: rate = 600; break; case B1200: rate = 1200; break; case B2400: rate = 2400; break; case B4800: rate = 4800; break; case B9600: rate = 9600; break; case B19200: rate = 19200; break; case B38400: rate = 38400; break; case B57600: rate = 57600; break; case B115200: rate = 115200; break; default: rate = 9600; dev_err(cs->dev, "unsupported baudrate request 0x%x," " using default of B9600\n", cflag); } val = 0x383fff / rate + 1; return set_value(cs, 1, val); } /* * set the line format on the internal serial adapter * using the undocumented parameter setting command */ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) { u16 val = 0; /* set the parity */ if (cflag & PARENB) val |= (cflag & PARODD) ? 0x10 : 0x20; /* set the number of data bits */ switch (cflag & CSIZE) { case CS5: val |= 5 << 8; break; case CS6: val |= 6 << 8; break; case CS7: val |= 7 << 8; break; case CS8: val |= 8 << 8; break; default: dev_err(cs->dev, "CSIZE was not CS5-CS8, using default of 8\n"); val |= 8 << 8; break; } /* set the number of stop bits */ if (cflag & CSTOPB) { if ((cflag & CSIZE) == CS5) val |= 1; /* 1.5 stop bits */ else val |= 2; /* 2 stop bits */ } return set_value(cs, 3, val); } /*============================================================================*/ static int gigaset_init_bchannel(struct bc_state *bcs) { /* nothing to do for M10x */ gigaset_bchannel_up(bcs); return 0; } static int gigaset_close_bchannel(struct bc_state *bcs) { /* nothing to do for M10x */ gigaset_bchannel_down(bcs); return 0; } static int write_modem(struct cardstate *cs); static int send_cb(struct cardstate *cs); /* Write tasklet handler: Continue sending current skb, or send command, or * start sending an skb from the send queue. */ static void gigaset_modem_fill(unsigned long data) { struct cardstate *cs = (struct cardstate *) data; struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ gig_dbg(DEBUG_OUTPUT, "modem_fill"); if (cs->hw.usb->busy) { gig_dbg(DEBUG_OUTPUT, "modem_fill: busy"); return; } again: if (!bcs->tx_skb) { /* no skb is being sent */ if (cs->cmdbuf) { /* commands to send? */ gig_dbg(DEBUG_OUTPUT, "modem_fill: cb"); if (send_cb(cs) < 0) { gig_dbg(DEBUG_OUTPUT, "modem_fill: send_cb failed"); goto again; /* no callback will be called! */ } return; } /* skbs to send? */ bcs->tx_skb = skb_dequeue(&bcs->squeue); if (!bcs->tx_skb) return; gig_dbg(DEBUG_INTR, "Dequeued skb (Adr: %lx)!", (unsigned long) bcs->tx_skb); } gig_dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); if (write_modem(cs) < 0) { gig_dbg(DEBUG_OUTPUT, "modem_fill: write_modem failed"); goto again; /* no callback will be called! */ } } /* * Interrupt Input URB completion routine */ static void gigaset_read_int_callback(struct urb *urb) { struct cardstate *cs = urb->context; struct inbuf_t *inbuf = cs->inbuf; int status = urb->status; int r; unsigned numbytes; unsigned char *src; unsigned long flags; if (!status) { numbytes = urb->actual_length; if (numbytes) { src = cs->hw.usb->rcvbuf; if (unlikely(*src)) dev_warn(cs->dev, "%s: There was no leading 0, but 0x%02x!\n", __func__, (unsigned) *src); ++src; /* skip leading 0x00 */ --numbytes; if (gigaset_fill_inbuf(inbuf, src, numbytes)) { gig_dbg(DEBUG_INTR, "%s-->BH", __func__); gigaset_schedule_event(inbuf->cs); } } else gig_dbg(DEBUG_INTR, "Received zero block length"); } else { /* The urb might have been killed. */ gig_dbg(DEBUG_ANY, "%s - nonzero status received: %d", __func__, status); if (status == -ENOENT || status == -ESHUTDOWN) /* killed or endpoint shutdown: don't resubmit */ return; } /* resubmit URB */ spin_lock_irqsave(&cs->lock, flags); if (!cs->connected) { spin_unlock_irqrestore(&cs->lock, flags); pr_err("%s: disconnected\n", __func__); return; } r = usb_submit_urb(urb, GFP_ATOMIC); spin_unlock_irqrestore(&cs->lock, flags); if (r) dev_err(cs->dev, "error %d resubmitting URB\n", -r); } /* This callback routine is called when data was transmitted to the device. */ static void gigaset_write_bulk_callback(struct urb *urb) { struct cardstate *cs = urb->context; int status = urb->status; unsigned long flags; switch (status) { case 0: /* normal completion */ break; case -ENOENT: /* killed */ gig_dbg(DEBUG_ANY, "%s: killed", __func__); cs->hw.usb->busy = 0; return; default: dev_err(cs->dev, "bulk transfer failed (status %d)\n", -status); /* That's all we can do. Communication problems are handled by timeouts or network protocols. */ } spin_lock_irqsave(&cs->lock, flags); if (!cs->connected) { pr_err("%s: disconnected\n", __func__); } else { cs->hw.usb->busy = 0; tasklet_schedule(&cs->write_tasklet); } spin_unlock_irqrestore(&cs->lock, flags); } static int send_cb(struct cardstate *cs) { struct cmdbuf_t *cb = cs->cmdbuf; unsigned long flags; int count; int status = -ENOENT; struct usb_cardstate *ucs = cs->hw.usb; do { if (!cb->len) { spin_lock_irqsave(&cs->cmdlock, flags); cs->cmdbytes -= cs->curlen; gig_dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left", cs->curlen, cs->cmdbytes); cs->cmdbuf = cb->next; if (cs->cmdbuf) { cs->cmdbuf->prev = NULL; cs->curlen = cs->cmdbuf->len; } else { cs->lastcmdbuf = NULL; cs->curlen = 0; } spin_unlock_irqrestore(&cs->cmdlock, flags); if (cb->wake_tasklet) tasklet_schedule(cb->wake_tasklet); kfree(cb); cb = cs->cmdbuf; } if (cb) { count = min(cb->len, ucs->bulk_out_size); gig_dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count); usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, usb_sndbulkpipe(ucs->udev, ucs->bulk_out_epnum), cb->buf + cb->offset, count, gigaset_write_bulk_callback, cs); cb->offset += count; cb->len -= count; ucs->busy = 1; spin_lock_irqsave(&cs->lock, flags); status = cs->connected ? usb_submit_urb(ucs->bulk_out_urb, GFP_ATOMIC) : -ENODEV; spin_unlock_irqrestore(&cs->lock, flags); if (status) { ucs->busy = 0; dev_err(cs->dev, "could not submit urb (error %d)\n", -status); cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */ } } } while (cb && status); /* next command on error */ return status; } /* Send command to device. */ static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb) { unsigned long flags; int len; gigaset_dbg_buffer(cs->mstate != MS_LOCKED ? DEBUG_TRANSCMD : DEBUG_LOCKCMD, "CMD Transmit", cb->len, cb->buf); spin_lock_irqsave(&cs->cmdlock, flags); cb->prev = cs->lastcmdbuf; if (cs->lastcmdbuf) cs->lastcmdbuf->next = cb; else { cs->cmdbuf = cb; cs->curlen = cb->len; } cs->cmdbytes += cb->len; cs->lastcmdbuf = cb; spin_unlock_irqrestore(&cs->cmdlock, flags); spin_lock_irqsave(&cs->lock, flags); len = cb->len; if (cs->connected) tasklet_schedule(&cs->write_tasklet); spin_unlock_irqrestore(&cs->lock, flags); return len; } static int gigaset_write_room(struct cardstate *cs) { unsigned bytes; bytes = cs->cmdbytes; return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0; } static int gigaset_chars_in_buffer(struct cardstate *cs) { return cs->cmdbytes; } /* * set the break characters on the internal serial adapter * using undocumented device commands reverse engineered from USB traces * of the Siemens Windows driver */ static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) { struct usb_device *udev = cs->hw.usb->udev; gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf); memcpy(cs->hw.usb->bchars, buf, 6); return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, 0, 0, &buf, 6, 2000); } static void gigaset_freebcshw(struct bc_state *bcs) { /* unused */ } /* Initialize the b-channel structure */ static int gigaset_initbcshw(struct bc_state *bcs) { /* unused */ bcs->hw.usb = NULL; return 0; } static void gigaset_reinitbcshw(struct bc_state *bcs) { /* nothing to do for M10x */ } static void gigaset_freecshw(struct cardstate *cs) { tasklet_kill(&cs->write_tasklet); kfree(cs->hw.usb); } static int gigaset_initcshw(struct cardstate *cs) { struct usb_cardstate *ucs; cs->hw.usb = ucs = kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL); if (!ucs) { pr_err("out of memory\n"); return -ENOMEM; } ucs->bchars[0] = 0; ucs->bchars[1] = 0; ucs->bchars[2] = 0; ucs->bchars[3] = 0; ucs->bchars[4] = 0x11; ucs->bchars[5] = 0x13; ucs->bulk_out_buffer = NULL; ucs->bulk_out_urb = NULL; ucs->read_urb = NULL; tasklet_init(&cs->write_tasklet, gigaset_modem_fill, (unsigned long) cs); return 0; } /* Send data from current skb to the device. */ static int write_modem(struct cardstate *cs) { int ret = 0; int count; struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ struct usb_cardstate *ucs = cs->hw.usb; unsigned long flags; gig_dbg(DEBUG_OUTPUT, "len: %d...", bcs->tx_skb->len); if (!bcs->tx_skb->len) { dev_kfree_skb_any(bcs->tx_skb); bcs->tx_skb = NULL; return -EINVAL; } /* Copy data to bulk out buffer and transmit data */ count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size); skb_copy_from_linear_data(bcs->tx_skb, ucs->bulk_out_buffer, count); skb_pull(bcs->tx_skb, count); ucs->busy = 1; gig_dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count); spin_lock_irqsave(&cs->lock, flags); if (cs->connected) { usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, usb_sndbulkpipe(ucs->udev, ucs->bulk_out_epnum), ucs->bulk_out_buffer, count, gigaset_write_bulk_callback, cs); ret = usb_submit_urb(ucs->bulk_out_urb, GFP_ATOMIC); } else { ret = -ENODEV; } spin_unlock_irqrestore(&cs->lock, flags); if (ret) { dev_err(cs->dev, "could not submit urb (error %d)\n", -ret); ucs->busy = 0; } if (!bcs->tx_skb->len) { /* skb sent completely */ gigaset_skb_sent(bcs, bcs->tx_skb); gig_dbg(DEBUG_INTR, "kfree skb (Adr: %lx)!", (unsigned long) bcs->tx_skb); dev_kfree_skb_any(bcs->tx_skb); bcs->tx_skb = NULL; } return ret; } static int gigaset_probe(struct usb_interface *interface, const struct usb_device_id *id) { int retval; struct usb_device *udev = interface_to_usbdev(interface); struct usb_host_interface *hostif = interface->cur_altsetting; struct cardstate *cs = NULL; struct usb_cardstate *ucs = NULL; struct usb_endpoint_descriptor *endpoint; int buffer_size; gig_dbg(DEBUG_ANY, "%s: Check if device matches ...", __func__); /* See if the device offered us matches what we can accept */ if ((le16_to_cpu(udev->descriptor.idVendor) != USB_M105_VENDOR_ID) || (le16_to_cpu(udev->descriptor.idProduct) != USB_M105_PRODUCT_ID)) { gig_dbg(DEBUG_ANY, "device ID (0x%x, 0x%x) not for me - skip", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct)); return -ENODEV; } if (hostif->desc.bInterfaceNumber != 0) { gig_dbg(DEBUG_ANY, "interface %d not for me - skip", hostif->desc.bInterfaceNumber); return -ENODEV; } if (hostif->desc.bAlternateSetting != 0) { dev_notice(&udev->dev, "unsupported altsetting %d - skip", hostif->desc.bAlternateSetting); return -ENODEV; } if (hostif->desc.bInterfaceClass != 255) { dev_notice(&udev->dev, "unsupported interface class %d - skip", hostif->desc.bInterfaceClass); return -ENODEV; } dev_info(&udev->dev, "%s: Device matched ... !\n", __func__); /* allocate memory for our device state and initialize it */ cs = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME); if (!cs) return -ENODEV; ucs = cs->hw.usb; /* save off device structure ptrs for later use */ usb_get_dev(udev); ucs->udev = udev; ucs->interface = interface; cs->dev = &interface->dev; /* save address of controller structure */ usb_set_intfdata(interface, cs); endpoint = &hostif->endpoint[0].desc; buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); ucs->bulk_out_size = buffer_size; ucs->bulk_out_epnum = usb_endpoint_num(endpoint); ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!ucs->bulk_out_buffer) { dev_err(cs->dev, "Couldn't allocate bulk_out_buffer\n"); retval = -ENOMEM; goto error; } ucs->bulk_out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!ucs->bulk_out_urb) { dev_err(cs->dev, "Couldn't allocate bulk_out_urb\n"); retval = -ENOMEM; goto error; } endpoint = &hostif->endpoint[1].desc; ucs->busy = 0; ucs->read_urb = usb_alloc_urb(0, GFP_KERNEL); if (!ucs->read_urb) { dev_err(cs->dev, "No free urbs available\n"); retval = -ENOMEM; goto error; } buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); ucs->rcvbuf_size = buffer_size; ucs->rcvbuf = kmalloc(buffer_size, GFP_KERNEL); if (!ucs->rcvbuf) { dev_err(cs->dev, "Couldn't allocate rcvbuf\n"); retval = -ENOMEM; goto error; } /* Fill the interrupt urb and send it to the core */ usb_fill_int_urb(ucs->read_urb, udev, usb_rcvintpipe(udev, usb_endpoint_num(endpoint)), ucs->rcvbuf, buffer_size, gigaset_read_int_callback, cs, endpoint->bInterval); retval = usb_submit_urb(ucs->read_urb, GFP_KERNEL); if (retval) { dev_err(cs->dev, "Could not submit URB (error %d)\n", -retval); goto error; } /* tell common part that the device is ready */ if (startmode == SM_LOCKED) cs->mstate = MS_LOCKED; retval = gigaset_start(cs); if (retval < 0) { tasklet_kill(&cs->write_tasklet); goto error; } return 0; error: usb_kill_urb(ucs->read_urb); kfree(ucs->bulk_out_buffer); usb_free_urb(ucs->bulk_out_urb); kfree(ucs->rcvbuf); usb_free_urb(ucs->read_urb); usb_set_intfdata(interface, NULL); ucs->read_urb = ucs->bulk_out_urb = NULL; ucs->rcvbuf = ucs->bulk_out_buffer = NULL; usb_put_dev(ucs->udev); ucs->udev = NULL; ucs->interface = NULL; gigaset_freecs(cs); return retval; } static void gigaset_disconnect(struct usb_interface *interface) { struct cardstate *cs; struct usb_cardstate *ucs; cs = usb_get_intfdata(interface); ucs = cs->hw.usb; dev_info(cs->dev, "disconnecting Gigaset USB adapter\n"); usb_kill_urb(ucs->read_urb); gigaset_stop(cs); usb_set_intfdata(interface, NULL); tasklet_kill(&cs->write_tasklet); usb_kill_urb(ucs->bulk_out_urb); kfree(ucs->bulk_out_buffer); usb_free_urb(ucs->bulk_out_urb); kfree(ucs->rcvbuf); usb_free_urb(ucs->read_urb); ucs->read_urb = ucs->bulk_out_urb = NULL; ucs->rcvbuf = ucs->bulk_out_buffer = NULL; usb_put_dev(ucs->udev); ucs->interface = NULL; ucs->udev = NULL; cs->dev = NULL; gigaset_freecs(cs); } /* gigaset_suspend * This function is called before the USB connection is suspended or reset. */ static int gigaset_suspend(struct usb_interface *intf, pm_message_t message) { struct cardstate *cs = usb_get_intfdata(intf); /* stop activity */ cs->connected = 0; /* prevent rescheduling */ usb_kill_urb(cs->hw.usb->read_urb); tasklet_kill(&cs->write_tasklet); usb_kill_urb(cs->hw.usb->bulk_out_urb); gig_dbg(DEBUG_SUSPEND, "suspend complete"); return 0; } /* gigaset_resume * This function is called after the USB connection has been resumed or reset. */ static int gigaset_resume(struct usb_interface *intf) { struct cardstate *cs = usb_get_intfdata(intf); int rc; /* resubmit interrupt URB */ cs->connected = 1; rc = usb_submit_urb(cs->hw.usb->read_urb, GFP_KERNEL); if (rc) { dev_err(cs->dev, "Could not submit read URB (error %d)\n", -rc); return rc; } gig_dbg(DEBUG_SUSPEND, "resume complete"); return 0; } /* gigaset_pre_reset * This function is called before the USB connection is reset. */ static int gigaset_pre_reset(struct usb_interface *intf) { /* same as suspend */ return gigaset_suspend(intf, PMSG_ON); } static const struct gigaset_ops ops = { .write_cmd = gigaset_write_cmd, .write_room = gigaset_write_room, .chars_in_buffer = gigaset_chars_in_buffer, .brkchars = gigaset_brkchars, .init_bchannel = gigaset_init_bchannel, .close_bchannel = gigaset_close_bchannel, .initbcshw = gigaset_initbcshw, .freebcshw = gigaset_freebcshw, .reinitbcshw = gigaset_reinitbcshw, .initcshw = gigaset_initcshw, .freecshw = gigaset_freecshw, .set_modem_ctrl = gigaset_set_modem_ctrl, .baud_rate = gigaset_baud_rate, .set_line_ctrl = gigaset_set_line_ctrl, .send_skb = gigaset_m10x_send_skb, .handle_input = gigaset_m10x_input, }; /* * This function is called while kernel-module is loaded */ static int __init usb_gigaset_init(void) { int result; /* allocate memory for our driver state and initialize it */ driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, GIGASET_MODULENAME, GIGASET_DEVNAME, &ops, THIS_MODULE); if (driver == NULL) { result = -ENOMEM; goto error; } /* register this driver with the USB subsystem */ result = usb_register(&gigaset_usb_driver); if (result < 0) { pr_err("error %d registering USB driver\n", -result); goto error; } pr_info(DRIVER_DESC "\n"); return 0; error: if (driver) gigaset_freedriver(driver); driver = NULL; return result; } /* * This function is called while unloading the kernel-module */ static void __exit usb_gigaset_exit(void) { int i; gigaset_blockdriver(driver); /* => probe will fail * => no gigaset_start any more */ /* stop all connected devices */ for (i = 0; i < driver->minors; i++) gigaset_shutdown(driver->cs + i); /* from now on, no isdn callback should be possible */ /* deregister this driver with the USB subsystem */ usb_deregister(&gigaset_usb_driver); /* this will call the disconnect-callback */ /* from now on, no disconnect/probe callback should be running */ gigaset_freedriver(driver); driver = NULL; } module_init(usb_gigaset_init); module_exit(usb_gigaset_exit); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");
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