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/* $NetBSD: usb/uvscom.c,v 1.1 2002/03/19 15:08:42 augustss Exp $ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/usb/serial/uvscom.c 223486 2011-06-24 02:30:02Z hselasky $");
/*-
* Copyright (c) 2001-2003, 2005 Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*
* uvscom: SUNTAC Slipper U VS-10U driver.
* Slipper U is a PC Card to USB converter for data communication card
* adapter. It supports DDI Pocket's Air H" C@rd, C@rd H" 64, NTT's P-in,
* P-in m@ater and various data communication card adapters.
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR uvscom_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/serial/usb_serial.h>
#ifdef USB_DEBUG
static int uvscom_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, uvscom, CTLFLAG_RW, 0, "USB uvscom");
SYSCTL_INT(_hw_usb_uvscom, OID_AUTO, debug, CTLFLAG_RW,
&uvscom_debug, 0, "Debug level");
#endif
#define UVSCOM_MODVER 1 /* module version */
#define UVSCOM_CONFIG_INDEX 0
#define UVSCOM_IFACE_INDEX 0
/* Request */
#define UVSCOM_SET_SPEED 0x10
#define UVSCOM_LINE_CTL 0x11
#define UVSCOM_SET_PARAM 0x12
#define UVSCOM_READ_STATUS 0xd0
#define UVSCOM_SHUTDOWN 0xe0
/* UVSCOM_SET_SPEED parameters */
#define UVSCOM_SPEED_150BPS 0x00
#define UVSCOM_SPEED_300BPS 0x01
#define UVSCOM_SPEED_600BPS 0x02
#define UVSCOM_SPEED_1200BPS 0x03
#define UVSCOM_SPEED_2400BPS 0x04
#define UVSCOM_SPEED_4800BPS 0x05
#define UVSCOM_SPEED_9600BPS 0x06
#define UVSCOM_SPEED_19200BPS 0x07
#define UVSCOM_SPEED_38400BPS 0x08
#define UVSCOM_SPEED_57600BPS 0x09
#define UVSCOM_SPEED_115200BPS 0x0a
/* UVSCOM_LINE_CTL parameters */
#define UVSCOM_BREAK 0x40
#define UVSCOM_RTS 0x02
#define UVSCOM_DTR 0x01
#define UVSCOM_LINE_INIT 0x08
/* UVSCOM_SET_PARAM parameters */
#define UVSCOM_DATA_MASK 0x03
#define UVSCOM_DATA_BIT_8 0x03
#define UVSCOM_DATA_BIT_7 0x02
#define UVSCOM_DATA_BIT_6 0x01
#define UVSCOM_DATA_BIT_5 0x00
#define UVSCOM_STOP_MASK 0x04
#define UVSCOM_STOP_BIT_2 0x04
#define UVSCOM_STOP_BIT_1 0x00
#define UVSCOM_PARITY_MASK 0x18
#define UVSCOM_PARITY_EVEN 0x18
#define UVSCOM_PARITY_ODD 0x08
#define UVSCOM_PARITY_NONE 0x00
/* Status bits */
#define UVSCOM_TXRDY 0x04
#define UVSCOM_RXRDY 0x01
#define UVSCOM_DCD 0x08
#define UVSCOM_NOCARD 0x04
#define UVSCOM_DSR 0x02
#define UVSCOM_CTS 0x01
#define UVSCOM_USTAT_MASK (UVSCOM_NOCARD | UVSCOM_DSR | UVSCOM_CTS)
#define UVSCOM_BULK_BUF_SIZE 1024 /* bytes */
enum {
UVSCOM_BULK_DT_WR,
UVSCOM_BULK_DT_RD,
UVSCOM_INTR_DT_RD,
UVSCOM_N_TRANSFER,
};
struct uvscom_softc {
struct ucom_super_softc sc_super_ucom;
struct ucom_softc sc_ucom;
struct usb_xfer *sc_xfer[UVSCOM_N_TRANSFER];
struct usb_device *sc_udev;
struct mtx sc_mtx;
uint16_t sc_line; /* line control register */
uint8_t sc_iface_no; /* interface number */
uint8_t sc_iface_index; /* interface index */
uint8_t sc_lsr; /* local status register */
uint8_t sc_msr; /* uvscom status register */
uint8_t sc_unit_status; /* unit status */
};
/* prototypes */
static device_probe_t uvscom_probe;
static device_attach_t uvscom_attach;
static device_detach_t uvscom_detach;
static usb_callback_t uvscom_write_callback;
static usb_callback_t uvscom_read_callback;
static usb_callback_t uvscom_intr_callback;
static void uvscom_cfg_set_dtr(struct ucom_softc *, uint8_t);
static void uvscom_cfg_set_rts(struct ucom_softc *, uint8_t);
static void uvscom_cfg_set_break(struct ucom_softc *, uint8_t);
static int uvscom_pre_param(struct ucom_softc *, struct termios *);
static void uvscom_cfg_param(struct ucom_softc *, struct termios *);
static int uvscom_pre_open(struct ucom_softc *);
static void uvscom_cfg_open(struct ucom_softc *);
static void uvscom_cfg_close(struct ucom_softc *);
static void uvscom_start_read(struct ucom_softc *);
static void uvscom_stop_read(struct ucom_softc *);
static void uvscom_start_write(struct ucom_softc *);
static void uvscom_stop_write(struct ucom_softc *);
static void uvscom_cfg_get_status(struct ucom_softc *, uint8_t *,
uint8_t *);
static void uvscom_cfg_write(struct uvscom_softc *, uint8_t, uint16_t);
static uint16_t uvscom_cfg_read_status(struct uvscom_softc *);
static void uvscom_poll(struct ucom_softc *ucom);
static const struct usb_config uvscom_config[UVSCOM_N_TRANSFER] = {
[UVSCOM_BULK_DT_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = UVSCOM_BULK_BUF_SIZE,
.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
.callback = &uvscom_write_callback,
},
[UVSCOM_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = UVSCOM_BULK_BUF_SIZE,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = &uvscom_read_callback,
},
[UVSCOM_INTR_DT_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.bufsize = 0, /* use wMaxPacketSize */
.callback = &uvscom_intr_callback,
},
};
static const struct ucom_callback uvscom_callback = {
.ucom_cfg_get_status = &uvscom_cfg_get_status,
.ucom_cfg_set_dtr = &uvscom_cfg_set_dtr,
.ucom_cfg_set_rts = &uvscom_cfg_set_rts,
.ucom_cfg_set_break = &uvscom_cfg_set_break,
.ucom_cfg_param = &uvscom_cfg_param,
.ucom_cfg_open = &uvscom_cfg_open,
.ucom_cfg_close = &uvscom_cfg_close,
.ucom_pre_open = &uvscom_pre_open,
.ucom_pre_param = &uvscom_pre_param,
.ucom_start_read = &uvscom_start_read,
.ucom_stop_read = &uvscom_stop_read,
.ucom_start_write = &uvscom_start_write,
.ucom_stop_write = &uvscom_stop_write,
.ucom_poll = &uvscom_poll,
};
static const STRUCT_USB_HOST_ID uvscom_devs[] = {
/* SUNTAC U-Cable type A4 */
{USB_VPI(USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_AS144L4, 0)},
/* SUNTAC U-Cable type D2 */
{USB_VPI(USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_DS96L, 0)},
/* SUNTAC Ir-Trinity */
{USB_VPI(USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_IS96U, 0)},
/* SUNTAC U-Cable type P1 */
{USB_VPI(USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_PS64P1, 0)},
/* SUNTAC Slipper U */
{USB_VPI(USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_VS10U, 0)},
};
static device_method_t uvscom_methods[] = {
DEVMETHOD(device_probe, uvscom_probe),
DEVMETHOD(device_attach, uvscom_attach),
DEVMETHOD(device_detach, uvscom_detach),
{0, 0}
};
static devclass_t uvscom_devclass;
static driver_t uvscom_driver = {
.name = "uvscom",
.methods = uvscom_methods,
.size = sizeof(struct uvscom_softc),
};
DRIVER_MODULE(uvscom, uhub, uvscom_driver, uvscom_devclass, NULL, 0);
MODULE_DEPEND(uvscom, ucom, 1, 1, 1);
MODULE_DEPEND(uvscom, usb, 1, 1, 1);
MODULE_VERSION(uvscom, UVSCOM_MODVER);
static int
uvscom_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
if (uaa->usb_mode != USB_MODE_HOST) {
return (ENXIO);
}
if (uaa->info.bConfigIndex != UVSCOM_CONFIG_INDEX) {
return (ENXIO);
}
if (uaa->info.bIfaceIndex != UVSCOM_IFACE_INDEX) {
return (ENXIO);
}
return (usbd_lookup_id_by_uaa(uvscom_devs, sizeof(uvscom_devs), uaa));
}
static int
uvscom_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct uvscom_softc *sc = device_get_softc(dev);
int error;
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, "uvscom", NULL, MTX_DEF);
sc->sc_udev = uaa->device;
DPRINTF("sc=%p\n", sc);
sc->sc_iface_no = uaa->info.bIfaceNum;
sc->sc_iface_index = UVSCOM_IFACE_INDEX;
error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
sc->sc_xfer, uvscom_config, UVSCOM_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
DPRINTF("could not allocate all USB transfers!\n");
goto detach;
}
sc->sc_line = UVSCOM_LINE_INIT;
/* clear stall at first run */
mtx_lock(&sc->sc_mtx);
usbd_xfer_set_stall(sc->sc_xfer[UVSCOM_BULK_DT_WR]);
usbd_xfer_set_stall(sc->sc_xfer[UVSCOM_BULK_DT_RD]);
mtx_unlock(&sc->sc_mtx);
error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
&uvscom_callback, &sc->sc_mtx);
if (error) {
goto detach;
}
ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
/* start interrupt pipe */
mtx_lock(&sc->sc_mtx);
usbd_transfer_start(sc->sc_xfer[UVSCOM_INTR_DT_RD]);
mtx_unlock(&sc->sc_mtx);
return (0);
detach:
uvscom_detach(dev);
return (ENXIO);
}
static int
uvscom_detach(device_t dev)
{
struct uvscom_softc *sc = device_get_softc(dev);
DPRINTF("sc=%p\n", sc);
/* stop interrupt pipe */
if (sc->sc_xfer[UVSCOM_INTR_DT_RD])
usbd_transfer_stop(sc->sc_xfer[UVSCOM_INTR_DT_RD]);
ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
usbd_transfer_unsetup(sc->sc_xfer, UVSCOM_N_TRANSFER);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
uvscom_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uvscom_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint32_t actlen;
switch (USB_GET_STATE(xfer)) {
case USB_ST_SETUP:
case USB_ST_TRANSFERRED:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (ucom_get_data(&sc->sc_ucom, pc, 0,
UVSCOM_BULK_BUF_SIZE, &actlen)) {
usbd_xfer_set_frame_len(xfer, 0, actlen);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uvscom_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uvscom_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
pc = usbd_xfer_get_frame(xfer, 0);
ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uvscom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uvscom_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint8_t buf[2];
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen >= 2) {
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, buf, sizeof(buf));
sc->sc_lsr = 0;
sc->sc_msr = 0;
sc->sc_unit_status = buf[1];
if (buf[0] & UVSCOM_TXRDY) {
sc->sc_lsr |= ULSR_TXRDY;
}
if (buf[0] & UVSCOM_RXRDY) {
sc->sc_lsr |= ULSR_RXRDY;
}
if (buf[1] & UVSCOM_CTS) {
sc->sc_msr |= SER_CTS;
}
if (buf[1] & UVSCOM_DSR) {
sc->sc_msr |= SER_DSR;
}
if (buf[1] & UVSCOM_DCD) {
sc->sc_msr |= SER_DCD;
}
/*
* the UCOM layer will ignore this call if the TTY
* device is closed!
*/
ucom_status_change(&sc->sc_ucom);
}
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uvscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
if (onoff)
sc->sc_line |= UVSCOM_DTR;
else
sc->sc_line &= ~UVSCOM_DTR;
uvscom_cfg_write(sc, UVSCOM_LINE_CTL, sc->sc_line);
}
static void
uvscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
if (onoff)
sc->sc_line |= UVSCOM_RTS;
else
sc->sc_line &= ~UVSCOM_RTS;
uvscom_cfg_write(sc, UVSCOM_LINE_CTL, sc->sc_line);
}
static void
uvscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
if (onoff)
sc->sc_line |= UVSCOM_BREAK;
else
sc->sc_line &= ~UVSCOM_BREAK;
uvscom_cfg_write(sc, UVSCOM_LINE_CTL, sc->sc_line);
}
static int
uvscom_pre_param(struct ucom_softc *ucom, struct termios *t)
{
switch (t->c_ospeed) {
case B150:
case B300:
case B600:
case B1200:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
default:
return (EINVAL);
}
return (0);
}
static void
uvscom_cfg_param(struct ucom_softc *ucom, struct termios *t)
{
struct uvscom_softc *sc = ucom->sc_parent;
uint16_t value;
DPRINTF("\n");
switch (t->c_ospeed) {
case B150:
value = UVSCOM_SPEED_150BPS;
break;
case B300:
value = UVSCOM_SPEED_300BPS;
break;
case B600:
value = UVSCOM_SPEED_600BPS;
break;
case B1200:
value = UVSCOM_SPEED_1200BPS;
break;
case B2400:
value = UVSCOM_SPEED_2400BPS;
break;
case B4800:
value = UVSCOM_SPEED_4800BPS;
break;
case B9600:
value = UVSCOM_SPEED_9600BPS;
break;
case B19200:
value = UVSCOM_SPEED_19200BPS;
break;
case B38400:
value = UVSCOM_SPEED_38400BPS;
break;
case B57600:
value = UVSCOM_SPEED_57600BPS;
break;
case B115200:
value = UVSCOM_SPEED_115200BPS;
break;
default:
return;
}
uvscom_cfg_write(sc, UVSCOM_SET_SPEED, value);
value = 0;
if (t->c_cflag & CSTOPB) {
value |= UVSCOM_STOP_BIT_2;
}
if (t->c_cflag & PARENB) {
if (t->c_cflag & PARODD) {
value |= UVSCOM_PARITY_ODD;
} else {
value |= UVSCOM_PARITY_EVEN;
}
} else {
value |= UVSCOM_PARITY_NONE;
}
switch (t->c_cflag & CSIZE) {
case CS5:
value |= UVSCOM_DATA_BIT_5;
break;
case CS6:
value |= UVSCOM_DATA_BIT_6;
break;
case CS7:
value |= UVSCOM_DATA_BIT_7;
break;
default:
case CS8:
value |= UVSCOM_DATA_BIT_8;
break;
}
uvscom_cfg_write(sc, UVSCOM_SET_PARAM, value);
}
static int
uvscom_pre_open(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("sc = %p\n", sc);
/* check if PC card was inserted */
if (sc->sc_unit_status & UVSCOM_NOCARD) {
DPRINTF("no PC card!\n");
return (ENXIO);
}
return (0);
}
static void
uvscom_cfg_open(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("sc = %p\n", sc);
uvscom_cfg_read_status(sc);
}
static void
uvscom_cfg_close(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
DPRINTF("sc=%p\n", sc);
uvscom_cfg_write(sc, UVSCOM_SHUTDOWN, 0);
}
static void
uvscom_start_read(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UVSCOM_BULK_DT_RD]);
}
static void
uvscom_stop_read(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UVSCOM_BULK_DT_RD]);
}
static void
uvscom_start_write(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UVSCOM_BULK_DT_WR]);
}
static void
uvscom_stop_write(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UVSCOM_BULK_DT_WR]);
}
static void
uvscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
{
struct uvscom_softc *sc = ucom->sc_parent;
*lsr = sc->sc_lsr;
*msr = sc->sc_msr;
}
static void
uvscom_cfg_write(struct uvscom_softc *sc, uint8_t index, uint16_t value)
{
struct usb_device_request req;
usb_error_t err;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = index;
USETW(req.wValue, value);
USETW(req.wIndex, 0);
USETW(req.wLength, 0);
err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
if (err) {
DPRINTFN(0, "device request failed, err=%s "
"(ignored)\n", usbd_errstr(err));
}
}
static uint16_t
uvscom_cfg_read_status(struct uvscom_softc *sc)
{
struct usb_device_request req;
usb_error_t err;
uint8_t data[2];
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = UVSCOM_READ_STATUS;
USETW(req.wValue, 0);
USETW(req.wIndex, 0);
USETW(req.wLength, 2);
err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, data, 0, 1000);
if (err) {
DPRINTFN(0, "device request failed, err=%s "
"(ignored)\n", usbd_errstr(err));
}
return (data[0] | (data[1] << 8));
}
static void
uvscom_poll(struct ucom_softc *ucom)
{
struct uvscom_softc *sc = ucom->sc_parent;
usbd_transfer_poll(sc->sc_xfer, UVSCOM_N_TRANSFER);
}