diff options
Diffstat (limited to 'drivers/staging/isdn/gigaset/usb-gigaset.c')
| -rw-r--r-- | drivers/staging/isdn/gigaset/usb-gigaset.c | 959 |
1 files changed, 0 insertions, 959 deletions
diff --git a/drivers/staging/isdn/gigaset/usb-gigaset.c b/drivers/staging/isdn/gigaset/usb-gigaset.c deleted file mode 100644 index a20c0bfa68f3..000000000000 --- a/drivers/staging/isdn/gigaset/usb-gigaset.c +++ /dev/null @@ -1,959 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * 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> - * - * ===================================================================== - * ===================================================================== - */ - -#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 = kzalloc(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; - 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; - } - - if (hostif->desc.bNumEndpoints < 2) { - dev_err(&interface->dev, "missing endpoints\n"); - 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; - - if (!usb_endpoint_is_bulk_out(endpoint)) { - dev_err(&interface->dev, "missing bulk-out endpoint\n"); - retval = -ENODEV; - goto error; - } - - 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; - - if (!usb_endpoint_is_int_in(endpoint)) { - dev_err(&interface->dev, "missing int-in endpoint\n"); - retval = -ENODEV; - goto error; - } - - 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"); |