most of the existing input system, which is why it lives in
drivers/input/ instead of drivers/usb/.
- The centre of the input drivers is the input.o module, which must be
+ The centre of the input drivers is the input module, which must be
loaded before any other of the input modules - it serves as a way of
communication between two groups of modules:
1.1 Device drivers
~~~~~~~~~~~~~~~~~~
These modules talk to the hardware (for example via USB), and provide
-events (keystrokes, mouse movements) to the input.o module.
+events (keystrokes, mouse movements) to the input module.
1.2 Event handlers
~~~~~~~~~~~~~~~~~~
- These modules get events from input.o and pass them where needed via
+ These modules get events from input and pass them where needed via
various interfaces - keystrokes to the kernel, mouse movements via a
simulated PS/2 interface to GPM and X and so on.
you'll have to load the following modules (or have them built in to the
kernel):
- input.o
- mousedev.o
- keybdev.o
- usbcore.o
- usb-uhci.o or usb-ohci.o or uhci.o
- hid.o
+ input
+ mousedev
+ keybdev
+ usbcore
+ uhci_hcd or ohci_hcd or ehci_hcd
+ usbhid
After this, the USB keyboard will work straight away, and the USB mouse
will be available as a character device on major 13, minor 63:
however not useful without being handled, so you also will need to use some
of the modules from section 3.2.
-3.1.1 hid.o
-~~~~~~~~~~~
- hid.o is the largest and most complex driver of the whole suite. It
+3.1.1 usbhid
+~~~~~~~~~~~~
+ usbhid is the largest and most complex driver of the whole suite. It
handles all HID devices, and because there is a very wide variety of them,
and because the USB HID specification isn't simple, it needs to be this big.
the hiddev interface was designed. See Documentation/usb/hiddev.txt
for more information about it.
- The usage of the hid.o module is very simple, it takes no parameters,
+ The usage of the usbhid module is very simple, it takes no parameters,
detects everything automatically and when a HID device is inserted, it
detects it appropriately.
device that doesn't work well. In that case #define DEBUG at the beginning
of hid-core.c and send me the syslog traces.
-3.1.2 usbmouse.o
-~~~~~~~~~~~~~~~~
+3.1.2 usbmouse
+~~~~~~~~~~~~~~
For embedded systems, for mice with broken HID descriptors and just any
-other use when the big hid.o wouldn't be a good choice, there is the
-usbmouse.c driver. It handles USB mice only. It uses a simpler HIDBP
+other use when the big usbhid wouldn't be a good choice, there is the
+usbmouse driver. It handles USB mice only. It uses a simpler HIDBP
protocol. This also means the mice must support this simpler protocol. Not
-all do. If you don't have any strong reason to use this module, use hid.o
+all do. If you don't have any strong reason to use this module, use usbhid
instead.
-3.1.3 usbkbd.o
-~~~~~~~~~~~~~~
- Much like usbmouse.c, this module talks to keyboards with a simplified
+3.1.3 usbkbd
+~~~~~~~~~~~~
+ Much like usbmouse, this module talks to keyboards with a simplified
HIDBP protocol. It's smaller, but doesn't support any extra special keys.
-Use hid.o instead if there isn't any special reason to use this.
+Use usbhid instead if there isn't any special reason to use this.
-3.1.4 wacom.o
-~~~~~~~~~~~~~
+3.1.4 wacom
+~~~~~~~~~~~
This is a driver for Wacom Graphire and Intuos tablets. Not for Wacom
PenPartner, that one is handled by the HID driver. Although the Intuos and
Graphire tablets claim that they are HID tablets as well, they are not and
thus need this specific driver.
-3.1.5 iforce.o
-~~~~~~~~~~~~~~~
+3.1.5 iforce
+~~~~~~~~~~~~
A driver for I-Force joysticks and wheels, both over USB and RS232.
It includes ForceFeedback support now, even though Immersion
Corp. considers the protocol a trade secret and won't disclose a word
Event handlers distrubite the events from the devices to userland and
kernel, as needed.
-3.2.1 keybdev.o
-~~~~~~~~~~~~~~~
+3.2.1 keybdev
+~~~~~~~~~~~~~
keybdev is currently a rather ugly hack that translates the input
events into architecture-specific keyboard raw mode (Xlated AT Set2 on
x86), and passes them into the handle_scancode function of the
best if keyboard.c would itself be an event handler. This is done in
the input patch, available on the webpage mentioned below.
-3.2.2 mousedev.o
-~~~~~~~~~~~~~~~~
+3.2.2 mousedev
+~~~~~~~~~~~~~~
mousedev is also a hack to make programs that use mouse input
work. It takes events from either mice or digitizers/tablets and makes
a PS/2-style (a la /dev/psaux) mouse device available to the
userland. Ideally, the programs could use a more reasonable interface,
-for example evdev.o
+for example evdev
Mousedev devices in /dev/input (as shown above) are:
these. You'll need ImPS/2 if you want to make use of a wheel on a USB
mouse and ExplorerPS/2 if you want to use extra (up to 5) buttons.
-3.2.3 joydev.o
-~~~~~~~~~~~~~~
+3.2.3 joydev
+~~~~~~~~~~~~
Joydev implements v0.x and v1.x Linux joystick api, much like
drivers/char/joystick/joystick.c used to in earlier versions. See
joystick-api.txt in the Documentation subdirectory for details. As
And so on up to js31.
-3.2.4 evdev.o
-~~~~~~~~~~~~~
+3.2.4 evdev
+~~~~~~~~~~~
evdev is the generic input event interface. It passes the events
generated in the kernel straight to the program, with timestamps. The
API is still evolving, but should be useable now. It's described in
#
# Multipart objects.
-hid-objs := hid-core.o
+usbhid-objs := hid-core.o
# Optional parts of multipart objects.
ifeq ($(CONFIG_USB_HIDDEV),y)
- hid-objs += hiddev.o
+ usbhid-objs += hiddev.o
endif
ifeq ($(CONFIG_USB_HIDINPUT),y)
- hid-objs += hid-input.o
+ usbhid-objs += hid-input.o
endif
ifeq ($(CONFIG_HID_PID),y)
- hid-objs += pid.o
+ usbhid-objs += pid.o
endif
ifeq ($(CONFIG_LOGITECH_FF),y)
- hid-objs += hid-lgff.o
+ usbhid-objs += hid-lgff.o
endif
ifeq ($(CONFIG_THRUSTMASTER_FF),y)
- hid-objs += hid-tmff.o
+ usbhid-objs += hid-tmff.o
endif
ifeq ($(CONFIG_HID_FF),y)
- hid-objs += hid-ff.o
+ usbhid-objs += hid-ff.o
endif
obj-$(CONFIG_USB_AIPTEK) += aiptek.o
obj-$(CONFIG_USB_ATI_REMOTE) += ati_remote.o
-obj-$(CONFIG_USB_HID) += hid.o
+obj-$(CONFIG_USB_HID) += usbhid.o
obj-$(CONFIG_USB_KBD) += usbkbd.o
obj-$(CONFIG_USB_KBTAB) += kbtab.o
obj-$(CONFIG_USB_MOUSE) += usbmouse.o
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