button device driver(uClinux) for linux

[Altera_Forum]

Dear all. 

 I do testing button device driver(uClinux) for linux(Cyclone III 3C120 FPGA Dev kit).   1. In SOPC system, button pio name is user_pb_pio_4in(input ports only, Either edge, Interrupt : Edge).   2. sopc-create-header-files -- single custom_fpga.h  cp custom_fpga.h nios2-linux/linux-2.6/arch/nios/include/asm make menuconfig NiosII Configuration --->NiosII FPGA configuration --->(X) CUSTOM_FPGA   3. Edite de2_botton.c# define BUTTONS_BASE na_KEY# define BUTTONS_IRQ na_KEY_irq  to# define BUTTONS_BASE na_user_pb_pio_4in# define BUTTONS_IRQ na_user_pb_pio_4in_irq   4. Copy de2_botton.c, de2_include.h(http://www.hs-augsburg.de/~carcass/nios2-uclinux/) to linux-2.6/drivers/char Edite Kconfig, Makefile <Kconfig> config DE2_BUTTONS tristate "DE2 BUTTONS MODULE" depends on NIOS || NIOS2 help rudimentary module, which makes access to the buttons (reading out the last pressed button(s)).  MAJOR number: 244 DEVICE FILE: /dev/buttons   <Makefile> obj-$(CONFIG_DE2_BUTTONS) += de2_buttons.o   5. make menuconfig device drivers > character devices >  [*] DE2_BUTTONS MODULE   6. make   I meet follow error message /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:64: error: 'na_user_pb_pio_4in' undeclared here (not in a function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c: In function 'button_isr': /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:73: error: 'np_pio' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:73: error: (Each undeclared identifier is reported only once /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:73: error: for each function it appears in.) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:73: error: 'pio_buttons' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:73: error: expected expression before ')' token /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c: In function 'button_start': /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:107: error: 'np_pio' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:107: error: 'pio_buttons' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:107: error: expected expression before ')' token /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:117: error: 'na_user_pb_pio_4in_irq' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:117: error: 'SA_INTERRUPT' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:117: warning: passing argument 2 of 'request_irq' from incompatible pointer type /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c: In function 'button_init': /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:216: error: 'np_pio' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c: In function 'button_exit': /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:244: error: 'np_pio' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:244: error: 'pio_buttons' undeclared (first use in this function) /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:244: error: expected expression before ')' token /home/sls/Nios2-Linux/Linux_source/linux-2.6/drivers/char/de2_buttons.c:250: error: 'na_user_pb_pio_4in_irq' undeclared (first use in this function) make[4]: *** [drivers/char/de2_buttons.o] &#50724;&#47448; 1 make[3]: *** [drivers/char] &#50724;&#47448; 2 make[2]: *** [drivers] &#50724;&#47448; 2 make[1]: *** [sub-make] &#50724;&#47448; 2 make[1]: Leaving directory `/home/sls/Nios2-Linux/Linux_source/linux-2.6' make: *** [linux] &#50724;&#47448; 1   Please help me Sorry for my poor English.