usbwcm(7M) STREAMS Modules usbwcm(7M)NAMEusbwcm - STREAMS module for Wacom USB Tablets
SYNOPSIS
# include <sys/usb/clients/usbinput/usbwcm/usbwcm.h>
DESCRIPTION
The usbwcm STREAMS module processes byte streams generated by a Wacom
USB tablet.
The usbwcm module must be pushed on top of the HID class driver. See
hid(7D). The usbwcm module translates data from Wacom USB tablet into
formatted events expected by Wacom X.org XInputdriver. The event struc‐
ture is the same as that of FreeBSD uwacom driver.
Event Structure
The event_input structure is defined in:
usr/include/sys/usb/clients/usbinput/usbwcm/usbwcm.h
struct event_input {
#if defined(_LP64) || defined(_I32LPx)
struct timeval32 time;
#else
struct timeval time;
#endif
uint16_t type;
uint16_t index;
int32_t value;
};
time The event's timestamp. When the event occurred. The timestamp
is not defined to be meaningful except by being compared with
other input event timestamps.
type The event's unique type: button, relative/absolute valuator,
sync, and so forth. type is among the following: EVT_SYN,
EVT_BTN, EVT_REL, EVT_ABS and EVT_MSC.
index The event's sub-type. The index in a button event identifies
which button status was changed. Typical button index
includes: BTN_LEFT, BTN_RIGHT, BTN_MIDDLE, BTN_SIDE,
BTN_EXTRA, BTN_TOOL_PEN, BTN_TOOL_ERASER, BTN_TOOL_PAD,
BTN_TOOL_MOUSE, BTN_TIP, BTN_STYLUS_1, BTN_STYLUS_2
For absolute valuators, index is among the following: ABS_X,
ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_WHEEL, ABS_PRESSURE,
ABS_DISTANCE, ABS_TILT_X, ABS_TILT_Y, and ABS_MISC.
Ioctls
EVTIOCGVERSION The argument is a pointer to an int. This option
returns the current version of the event interface
implemented by the STREAMS module.
EVTIOCGDEVID The argument is a pointer to event_dev_id structure.
This ioctl returns the identifiers of the device.
struct event_dev_id {
uint16_t bus;
#defineID_BUS_USB 3
uint16_t vendor;
uint16_t product;
uint16_t version;
};
EVTIOCGBM The argument is a pointer to an variable-length char
array. This ioctl returns the event types reported by
device:
EVT_SYN, EVT_BTN, EVT_REL, EVT_ABS, EVT_MSC
EVTIOCGABS The argument is a pointer to an event_abs_axis struc‐
ture. This ioctl returns the ranges, and other param‐
eters for the specified axis.
struct event_abs_axis {
int32_t value;
int32_t min;
int32_t max;
int32_t fuzz;
int32_t flat;
};
FILES
/kernel/strmod/usbwcm
32-bit ELF kernel STREAMS module
/kernel/strmod/amd64/usbwcm
64-bit ELF kernel STREAMS module
/kernel/strmod/sparcv9/usbwcm
SPARC 64-bit ELF kernel STREAMS module
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Architecture │SPARC, x86-based systems │
├─────────────────────────────┼─────────────────────────────┤
│Availability │driver/usb │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOioctl(2), attributes(5), hid(7D)
System Administration Guide: Basic Administration
http://linuxwacom.sourceforge.net
http://www.sun.com
SunOS 5.11 15 Jan 2010 usbwcm(7M)
