sys/dev/usbmisc/uftdi/uftdi.c

   1 /*
   2  * $NetBSD: uftdi.c,v 1.13 2002/09/23 05:51:23 simonb Exp $
   3  * $FreeBSD: src/sys/dev/usb/uftdi.c,v 1.10 2003/08/24 17:55:55 obrien Exp $
   4  * $DragonFly: src/sys/dev/usbmisc/uftdi/uftdi.c,v 1.13 2007/06/28 13:55:12 hasso Exp $
   5  */
   6
   7 /*
   8  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   9  * All rights reserved.
  10  *
  11  * This code is derived from software contributed to The NetBSD Foundation
  12  * by Lennart Augustsson (lennart@augustsson.net).
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  * 3. All advertising materials mentioning features or use of this software
  23  *    must display the following acknowledgement:
  24  *        This product includes software developed by the NetBSD
  25  *        Foundation, Inc. and its contributors.
  26  * 4. Neither the name of The NetBSD Foundation nor the names of its
  27  *    contributors may be used to endorse or promote products derived
  28  *    from this software without specific prior written permission.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  31  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  32  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  33  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  34  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  35  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  36  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  37  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  38  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  40  * POSSIBILITY OF SUCH DAMAGE.
  41  */
  42
  43 /*
  44  * FTDI FT8U100AX serial adapter driver
  45  */
  46
  47 #include <sys/cdefs.h>
  48
  49 #include <sys/param.h>
  50 #include <sys/systm.h>
  51 #include <sys/kernel.h>
  52 #include <sys/malloc.h>
  53 #include <sys/bus.h>
  54 #include <sys/ioccom.h>
  55 #include <sys/fcntl.h>
  56 #include <sys/conf.h>
  57 #include <sys/tty.h>
  58 #include <sys/file.h>
  59
  60 #include <sys/select.h>
  61
  62 #include <sys/sysctl.h>
  63
  64 #include <bus/usb/usb.h>
  65 #include <bus/usb/usbhid.h>
  66
  67 #include <bus/usb/usbdi.h>
  68 #include <bus/usb/usbdi_util.h>
  69 #include <bus/usb/usbdevs.h>
  70
  71 #include "../ucom/ucomvar.h"
  72
  73 #include "uftdireg.h"
  74
  75 #ifdef USB_DEBUG
  76 static int uftdidebug = 0;
  77 SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi");
  78 SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW,
  79            &uftdidebug, 0, "uftdi debug level");
  80 #define DPRINTF(x)      do { \
  81                                 if (uftdidebug) \
  82                                         kprintf x; \
  83                         } while (0)
  84
  85 #define DPRINTFN(n, x)  do { \
  86                                 if (uftdidebug > (n)) \
  87                                         kprintf x; \
  88                         } while (0)
  89
  90 #else
  91 #define DPRINTF(x)
  92 #define DPRINTFN(n,x)
  93 #endif
  94
  95 #define UFTDI_CONFIG_INDEX      0
  96 #define UFTDI_IFACE_INDEX       0
  97
  98
  99 /*
 100  * These are the maximum number of bytes transferred per frame.
 101  * The output buffer size cannot be increased due to the size encoding.
 102  */
 103 #define UFTDIIBUFSIZE 64
 104 #define UFTDIOBUFSIZE 64
 105
 106 struct uftdi_softc {
 107         struct ucom_softc       sc_ucom;
 108
 109         usbd_interface_handle   sc_iface;       /* interface */
 110
 111         enum uftdi_type         sc_type;
 112         u_int                   sc_hdrlen;
 113
 114         u_char                  sc_msr;
 115         u_char                  sc_lsr;
 116
 117         u_int                   last_lcr;
 118 };
 119
 120 static void     uftdi_get_status(void *, int portno, u_char *lsr, u_char *msr);
 121 static void     uftdi_set(void *, int, int, int);
 122 static int      uftdi_param(void *, int, struct termios *);
 123 static int      uftdi_open(void *sc, int portno);
 124 static void     uftdi_read(void *sc, int portno, u_char **ptr,u_int32_t *count);
 125 static void     uftdi_write(void *sc, int portno, u_char *to, u_char *from,
 126                             u_int32_t *count);
 127 static void     uftdi_break(void *sc, int portno, int onoff);
 128
 129 struct ucom_callback uftdi_callback = {
 130         uftdi_get_status,
 131         uftdi_set,
 132         uftdi_param,
 133         NULL,
 134         uftdi_open,
 135         NULL,
 136         uftdi_read,
 137         uftdi_write,
 138 };
 139
 140 USB_MATCH(uftdi)
 141 {
 142         USB_MATCH_START(uftdi, uaa);
 143
 144         if (uaa->iface != NULL)
 145                 return (UMATCH_NONE);
 146
 147         DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n",
 148                      uaa->vendor, uaa->product));
 149
 150         if (uaa->vendor == USB_VENDOR_FTDI &&
 151             (uaa->product == USB_PRODUCT_FTDI_SERIAL_8U100AX ||
 152              uaa->product == USB_PRODUCT_FTDI_SERIAL_8U232AM))
 153                 return (UMATCH_VENDOR_PRODUCT);
 154
 155         return (UMATCH_NONE);
 156 }
 157
 158 USB_ATTACH(uftdi)
 159 {
 160         USB_ATTACH_START(uftdi, sc, uaa);
 161         usbd_device_handle dev = uaa->device;
 162         usbd_interface_handle iface;
 163         usb_interface_descriptor_t *id;
 164         usb_endpoint_descriptor_t *ed;
 165         char *devinfo;
 166         const char *devname;
 167         int i;
 168         usbd_status err;
 169         struct ucom_softc *ucom = &sc->sc_ucom;
 170         DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
 171         devinfo = kmalloc(1024, M_USBDEV, M_INTWAIT);
 172
 173         ucom->sc_dev = self;
 174         ucom->sc_udev = dev;
 175
 176         devname = device_get_nameunit(ucom->sc_dev);
 177
 178         /* Move the device into the configured state. */
 179         err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
 180         if (err) {
 181                 kprintf("\n%s: failed to set configuration, err=%s\n",
 182                        devname, usbd_errstr(err));
 183                 goto bad;
 184         }
 185
 186         err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface);
 187         if (err) {
 188                 kprintf("\n%s: failed to get interface, err=%s\n",
 189                        devname, usbd_errstr(err));
 190                 goto bad;
 191         }
 192
 193         usbd_devinfo(dev, 0, devinfo);
 194         /*      USB_ATTACH_SETUP;*/
 195         kprintf("%s: %s\n", devname, devinfo);
 196
 197         id = usbd_get_interface_descriptor(iface);
 198         ucom->sc_iface = iface;
 199         switch( uaa->product ){
 200         case USB_PRODUCT_FTDI_SERIAL_8U100AX:
 201                 sc->sc_type = UFTDI_TYPE_SIO;
 202                 sc->sc_hdrlen = 1;
 203                 break;
 204         case USB_PRODUCT_FTDI_SERIAL_8U232AM:
 205                 sc->sc_type = UFTDI_TYPE_8U232AM;
 206                 sc->sc_hdrlen = 0;
 207                 break;
 208
 209         default:                /* Can't happen */
 210                 goto bad;
 211         }
 212
 213         ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
 214
 215         for (i = 0; i < id->bNumEndpoints; i++) {
 216                 int addr, dir, attr;
 217                 ed = usbd_interface2endpoint_descriptor(iface, i);
 218                 if (ed == NULL) {
 219                         kprintf("%s: could not read endpoint descriptor"
 220                                ": %s\n", devname, usbd_errstr(err));
 221                         goto bad;
 222                 }
 223
 224                 addr = ed->bEndpointAddress;
 225                 dir = UE_GET_DIR(ed->bEndpointAddress);
 226                 attr = ed->bmAttributes & UE_XFERTYPE;
 227                 if (dir == UE_DIR_IN && attr == UE_BULK)
 228                   ucom->sc_bulkin_no = addr;
 229                 else if (dir == UE_DIR_OUT && attr == UE_BULK)
 230                   ucom->sc_bulkout_no = addr;
 231                 else {
 232                   kprintf("%s: unexpected endpoint\n", devname);
 233                   goto bad;
 234                 }
 235         }
 236         if (ucom->sc_bulkin_no == -1) {
 237                 kprintf("%s: Could not find data bulk in\n",
 238                        devname);
 239                 goto bad;
 240         }
 241         if (ucom->sc_bulkout_no == -1) {
 242                 kprintf("%s: Could not find data bulk out\n",
 243                        devname);
 244                 goto bad;
 245         }
 246         ucom->sc_parent  = sc;
 247         ucom->sc_portno = FTDI_PIT_SIOA;
 248         /* bulkin, bulkout set above */
 249
 250         ucom->sc_ibufsize = UFTDIIBUFSIZE;
 251         ucom->sc_obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen;
 252         ucom->sc_ibufsizepad = UFTDIIBUFSIZE;
 253         ucom->sc_opkthdrlen = sc->sc_hdrlen;
 254
 255
 256         ucom->sc_callback = &uftdi_callback;
 257 #if 0
 258         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, ucom->sc_udev,
 259                            ucom->sc_dev);
 260 #endif
 261         DPRINTF(("uftdi: in=0x%x out=0x%x\n", ucom->sc_bulkin_no, ucom->sc_bulkout_no));
 262         ucom_attach(&sc->sc_ucom);
 263         kfree(devinfo, M_USBDEV);
 264
 265         USB_ATTACH_SUCCESS_RETURN;
 266
 267 bad:
 268         DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
 269         ucom->sc_dying = 1;
 270         kfree(devinfo, M_USBDEV);
 271
 272         USB_ATTACH_ERROR_RETURN;
 273 }
 274 #if 0
 275 int
 276 uftdi_activate(device_t self, enum devact act)
 277 {
 278         struct uftdi_softc *sc = (struct uftdi_softc *)self;
 279         int rv = 0;
 280
 281         switch (act) {
 282         case DVACT_ACTIVATE:
 283                 return (EOPNOTSUPP);
 284
 285         case DVACT_DEACTIVATE:
 286                 if (sc->sc_subdev != NULL)
 287                         rv = config_deactivate(sc->sc_subdev);
 288                 sc->sc_ucom.sc_dying = 1;
 289                 break;
 290         }
 291         return (rv);
 292 }
 293 #endif
 294 #if 1
 295 USB_DETACH(uftdi)
 296 {
 297         USB_DETACH_START(uftdi, sc);
 298
 299         int rv = 0;
 300
 301         DPRINTF(("uftdi_detach: sc=%p\n", sc));
 302         sc->sc_ucom.sc_dying = 1;
 303         rv = ucom_detach(&sc->sc_ucom);
 304
 305         return rv;
 306 }
 307 #endif
 308 static int
 309 uftdi_open(void *vsc, int portno)
 310 {
 311         struct uftdi_softc *sc = vsc;
 312         struct ucom_softc *ucom = &sc->sc_ucom;
 313         usb_device_request_t req;
 314         usbd_status err;
 315         struct termios t;
 316
 317         DPRINTF(("uftdi_open: sc=%p\n", sc));
 318
 319         if (ucom->sc_dying)
 320                 return (EIO);
 321
 322         /* Perform a full reset on the device */
 323         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 324         req.bRequest = FTDI_SIO_RESET;
 325         USETW(req.wValue, FTDI_SIO_RESET_SIO);
 326         USETW(req.wIndex, portno);
 327         USETW(req.wLength, 0);
 328         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 329         if (err)
 330                 return (EIO);
 331
 332         /* Set 9600 baud, 2 stop bits, no parity, 8 bits */
 333         t.c_ospeed = 9600;
 334         t.c_cflag = CSTOPB | CS8;
 335         (void)uftdi_param(sc, portno, &t);
 336
 337         /* Turn on RTS/CTS flow control */
 338         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 339         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
 340         USETW(req.wValue, 0);
 341         USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno);
 342         USETW(req.wLength, 0);
 343         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 344         if (err)
 345                 return (EIO);
 346
 347         return (0);
 348 }
 349
 350 static void
 351 uftdi_read(void *vsc, int portno, u_char **ptr, u_int32_t *count)
 352 {
 353         struct uftdi_softc *sc = vsc;
 354         u_char msr, lsr;
 355
 356         DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno,
 357                      *count));
 358
 359         msr = FTDI_GET_MSR(*ptr);
 360         lsr = FTDI_GET_LSR(*ptr);
 361
 362 #ifdef USB_DEBUG
 363         if (*count != 2)
 364                 DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]="
 365                             "0x%02x\n", sc, portno, *count, (*ptr)[2]));
 366 #endif
 367
 368         if (sc->sc_msr != msr ||
 369             (sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) {
 370                 DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) "
 371                          "lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr,
 372                          lsr, sc->sc_lsr));
 373                 sc->sc_msr = msr;
 374                 sc->sc_lsr = lsr;
 375                 ucom_status_change(&sc->sc_ucom);
 376         }
 377
 378         /* Pick up status and adjust data part. */
 379         *ptr += 2;
 380         *count -= 2;
 381 }
 382
 383 static void
 384 uftdi_write(void *vsc, int portno, u_char *to, u_char *from, u_int32_t *count)
 385 {
 386         struct uftdi_softc *sc = vsc;
 387
 388         DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n",
 389                      vsc, portno, *count, from[0]));
 390
 391         /* Make length tag and copy data */
 392         if (sc->sc_hdrlen > 0)
 393                 *to = FTDI_OUT_TAG(*count, portno);
 394
 395         memcpy(to + sc->sc_hdrlen, from, *count);
 396         *count += sc->sc_hdrlen;
 397 }
 398
 399 static void
 400 uftdi_set(void *vsc, int portno, int reg, int onoff)
 401 {
 402         struct uftdi_softc *sc = vsc;
 403         struct ucom_softc *ucom = vsc;
 404         usb_device_request_t req;
 405         int ctl;
 406
 407         DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno,
 408                  reg, onoff));
 409
 410         switch (reg) {
 411         case UCOM_SET_DTR:
 412                 ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
 413                 break;
 414         case UCOM_SET_RTS:
 415                 ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
 416                 break;
 417         case UCOM_SET_BREAK:
 418                 uftdi_break(sc, portno, onoff);
 419                 return;
 420         default:
 421                 return;
 422         }
 423         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 424         req.bRequest = FTDI_SIO_MODEM_CTRL;
 425         USETW(req.wValue, ctl);
 426         USETW(req.wIndex, portno);
 427         USETW(req.wLength, 0);
 428         DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x "
 429                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 430                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 431         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
 432 }
 433
 434 static int
 435 uftdi_param(void *vsc, int portno, struct termios *t)
 436 {
 437         struct uftdi_softc *sc = vsc;
 438         struct ucom_softc *ucom = &sc->sc_ucom;
 439         usb_device_request_t req;
 440         usbd_status err;
 441         int rate=0, data, flow;
 442
 443         DPRINTF(("uftdi_param: sc=%p\n", sc));
 444
 445         if (ucom->sc_dying)
 446                 return (EIO);
 447
 448         switch (sc->sc_type) {
 449         case UFTDI_TYPE_SIO:
 450                 switch (t->c_ospeed) {
 451                 case 300: rate = ftdi_sio_b300; break;
 452                 case 600: rate = ftdi_sio_b600; break;
 453                 case 1200: rate = ftdi_sio_b1200; break;
 454                 case 2400: rate = ftdi_sio_b2400; break;
 455                 case 4800: rate = ftdi_sio_b4800; break;
 456                 case 9600: rate = ftdi_sio_b9600; break;
 457                 case 19200: rate = ftdi_sio_b19200; break;
 458                 case 38400: rate = ftdi_sio_b38400; break;
 459                 case 57600: rate = ftdi_sio_b57600; break;
 460                 case 115200: rate = ftdi_sio_b115200; break;
 461                 default:
 462                         return (EINVAL);
 463                 }
 464                 break;
 465
 466         case UFTDI_TYPE_8U232AM:
 467                 switch(t->c_ospeed) {
 468                 case 300: rate = ftdi_8u232am_b300; break;
 469                 case 600: rate = ftdi_8u232am_b600; break;
 470                 case 1200: rate = ftdi_8u232am_b1200; break;
 471                 case 2400: rate = ftdi_8u232am_b2400; break;
 472                 case 4800: rate = ftdi_8u232am_b4800; break;
 473                 case 9600: rate = ftdi_8u232am_b9600; break;
 474                 case 19200: rate = ftdi_8u232am_b19200; break;
 475                 case 38400: rate = ftdi_8u232am_b38400; break;
 476                 case 57600: rate = ftdi_8u232am_b57600; break;
 477                 case 115200: rate = ftdi_8u232am_b115200; break;
 478                 case 230400: rate = ftdi_8u232am_b230400; break;
 479                 case 460800: rate = ftdi_8u232am_b460800; break;
 480                 case 921600: rate = ftdi_8u232am_b921600; break;
 481                 default:
 482                         return (EINVAL);
 483                 }
 484                 break;
 485         }
 486         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 487         req.bRequest = FTDI_SIO_SET_BAUD_RATE;
 488         USETW(req.wValue, rate);
 489         USETW(req.wIndex, portno);
 490         USETW(req.wLength, 0);
 491         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
 492                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 493                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 494         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 495         if (err)
 496                 return (EIO);
 497
 498         if (ISSET(t->c_cflag, CSTOPB))
 499                 data = FTDI_SIO_SET_DATA_STOP_BITS_2;
 500         else
 501                 data = FTDI_SIO_SET_DATA_STOP_BITS_1;
 502         if (ISSET(t->c_cflag, PARENB)) {
 503                 if (ISSET(t->c_cflag, PARODD))
 504                         data |= FTDI_SIO_SET_DATA_PARITY_ODD;
 505                 else
 506                         data |= FTDI_SIO_SET_DATA_PARITY_EVEN;
 507         } else
 508                 data |= FTDI_SIO_SET_DATA_PARITY_NONE;
 509         switch (ISSET(t->c_cflag, CSIZE)) {
 510         case CS5:
 511                 data |= FTDI_SIO_SET_DATA_BITS(5);
 512                 break;
 513         case CS6:
 514                 data |= FTDI_SIO_SET_DATA_BITS(6);
 515                 break;
 516         case CS7:
 517                 data |= FTDI_SIO_SET_DATA_BITS(7);
 518                 break;
 519         case CS8:
 520                 data |= FTDI_SIO_SET_DATA_BITS(8);
 521                 break;
 522         }
 523         sc->last_lcr = data;
 524
 525         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 526         req.bRequest = FTDI_SIO_SET_DATA;
 527         USETW(req.wValue, data);
 528         USETW(req.wIndex, portno);
 529         USETW(req.wLength, 0);
 530         DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
 531                     "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
 532                     UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
 533         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 534         if (err)
 535                 return (EIO);
 536
 537         if (ISSET(t->c_cflag, CRTSCTS)) {
 538                 flow = FTDI_SIO_RTS_CTS_HS;
 539                 USETW(req.wValue, 0);
 540         } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
 541                 flow = FTDI_SIO_XON_XOFF_HS;
 542                 USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]);
 543         } else {
 544                 flow = FTDI_SIO_DISABLE_FLOW_CTRL;
 545                 USETW(req.wValue, 0);
 546         }
 547         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 548         req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
 549         USETW2(req.wIndex, flow, portno);
 550         USETW(req.wLength, 0);
 551         err = usbd_do_request(ucom->sc_udev, &req, NULL);
 552         if (err)
 553                 return (EIO);
 554
 555         return (0);
 556 }
 557
 558 void
 559 uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
 560 {
 561         struct uftdi_softc *sc = vsc;
 562
 563         DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n",
 564                  sc->sc_msr, sc->sc_lsr));
 565
 566         if (msr != NULL)
 567                 *msr = sc->sc_msr;
 568         if (lsr != NULL)
 569                 *lsr = sc->sc_lsr;
 570 }
 571
 572 void
 573 uftdi_break(void *vsc, int portno, int onoff)
 574 {
 575         struct uftdi_softc *sc = vsc;
 576         struct ucom_softc *ucom = vsc;
 577
 578         usb_device_request_t req;
 579         int data;
 580
 581         DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno,
 582                   onoff));
 583
 584         if (onoff) {
 585                 data = sc->last_lcr | FTDI_SIO_SET_BREAK;
 586         } else {
 587                 data = sc->last_lcr;
 588         }
 589
 590         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 591         req.bRequest = FTDI_SIO_SET_DATA;
 592         USETW(req.wValue, data);
 593         USETW(req.wIndex, portno);
 594         USETW(req.wLength, 0);
 595         (void)usbd_do_request(ucom->sc_udev, &req, NULL);
 596 }
 597
 598 static device_method_t uftdi_methods[] = {
 599         /* Device interface */
 600         DEVMETHOD(device_probe, uftdi_match),
 601         DEVMETHOD(device_attach, uftdi_attach),
 602         DEVMETHOD(device_detach, uftdi_detach),
 603
 604         { 0, 0 }
 605 };
 606
 607 static driver_t uftdi_driver = {
 608         "ucom",
 609         uftdi_methods,
 610         sizeof (struct uftdi_softc)
 611 };
 612
 613 DRIVER_MODULE(uftdi, uhub, uftdi_driver, ucom_devclass, usbd_driver_load, 0);
 614 MODULE_DEPEND(uftdi, usb, 1, 1, 1);
 615 MODULE_DEPEND(uftdi, ucom,UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);