--- /dev/null
+/*
+ * 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 = {
+ gigaset_write_cmd,
+ gigaset_write_room,
+ gigaset_chars_in_buffer,
+ gigaset_brkchars,
+ gigaset_init_bchannel,
+ gigaset_close_bchannel,
+ gigaset_initbcshw,
+ gigaset_freebcshw,
+ gigaset_reinitbcshw,
+ gigaset_initcshw,
+ gigaset_freecshw,
+ gigaset_set_modem_ctrl,
+ gigaset_baud_rate,
+ gigaset_set_line_ctrl,
+ gigaset_m10x_send_skb,
+ 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");
Code Review / kvmfornfv.git / blobdiff