Hi All,
Be honest, I am new to USB stuff on Linux.
Here is the problem I run into:
I try to compile USB Keyboard Support into Kernel for an embedded device.
So I turn on the following options:
1. CONFIG_USB_HID
2. CONFIG_USB_HIDDEV
3. CONFIG_INPUT
4. CONFIG_INPUT_KEYBDEV
* CONFIG_INPUT_EVDEV is not turned on
* CONFIG_PCI is not turned on
However, I failed comipling the kernel, error message is:
============================================================================
===============================
arch/mips/kernel/kernel.o arch/mips/mm/mm.o kernel/kernel.o mm/mm.o fs/fs.o
ipc/ipc.o \
drivers/char/char.o drivers/block/block.o drivers/misc/misc.o
drivers/net/net.o drivers/media/media.o drivers/ide/idedriver.o
drivers/scsi/scsidrv.o drivers/mtd/mtdlink.o drivers/usb/usbdrv.o
drivers/input/inputdrv.o \
net/network.o \
arch/mips/lib/lib.a /home/build/src_tree/os/linux/lib/lib.a
arch/mips/brcm-boards/common/brcmstb.a
arch/mips/brcm-boards/bcm97320/bcm97320.a \
--end-group \
-o vmlinux
drivers/input/inputdrv.o: In function `emulate_raw':
/home/build/src_tree/os/linux/drivers/input/keybdev.c:136: undefined
reference to `handle_scancode'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:139: undefined
reference to `handle_scancode'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:140: undefined
reference to `handle_scancode'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:134: undefined
reference to `handle_scancode'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:121: undefined
reference to `handle_scancode'
drivers/input/inputdrv.o:/home/build/src_tree/os/linux/drivers/input/keybdev
.c:114: more undefined references
to `handle_scancode' follow
drivers/input/inputdrv.o: In function `keybdev_event':
/home/build/src_tree/os/linux/include/linux/interrupt.h:158: undefined
reference to `keyboard_tasklet'
/home/build/src_tree/os/linux/include/linux/interrupt.h:158: undefined
reference to `keyboard_tasklet'
drivers/input/inputdrv.o: In function `keybdev_init':
/home/build/src_tree/os/linux/drivers/input/keybdev.c:224: undefined
reference to `kbd_ledfunc'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:224: undefined
reference to `kbd_ledfunc'
drivers/input/inputdrv.o: In function `keybdev_exit':
/home/build/src_tree/os/linux/drivers/input/keybdev.c:239: undefined
reference to `kbd_ledfunc'
/home/build/src_tree/os/linux/drivers/input/keybdev.c:223: undefined
reference to `kbd_ledfunc'
============================================================================
================================
I solve the compiling by turning on:
CONFIG_VT
CONFIG_DUMMY_CONSOLE
CONFIG_PC_KEYB
And then I run into other problems:
1. I try to directly read the input of the keyboard from one of the device
node. I tried all the ttyXX, none of them works; but I verified that the
kernel did get
an key event by stick a printk in the function handle_scancode in keyboard.c
So how can I get the input of the keyboard directly without using a console
or X or somethingelse?
In addition, I don't really need a console or anything else.
All I want is to:
1. Dynamically connect the USB keyboard to the device,
2. Push keys on the keyboard and the embedded system will receive it and
excute the testing command.
So how can I make it work without compiling in the modules that are
associated with VT/DUMMY_CONSOLE/PC_KEYB?
Can anybody help me or give me some clue what I should do without adding the
above options?
Thanks
John
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