触摸屏驱动移植

触摸屏驱动移植

内核里没有完善的触摸屏驱动，可以用我们提供的触摸屏驱动

有三个文件：s3c2410_ts.c, s3c2440_adc.c, s3c2440adc.h

(在光盘资料/源码包/驱动源码/触摸屏驱动)

将s3c2410_ts.c拷贝到drivers/input/touchscreen目录下，修改该目录下Kconfig文件，在第14行加入：

config TOUCHSCREEN_S3C2410

tristate "Samsung S3C2410 touchscreen input driver"

depends on INPUT && S3C2440_ADC

help

Say Y here if you have the s3c2410 touchscreen.

If unsure, say N.

To compile this driver as a module, choose M here: the

module will be called s3c2410_ts.

修改同目录下Makefile文件，在第9行加入：

obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o

将s3c2440_adc.c, s3c2440adc.h拷贝到drivers/char目录下，修改同目录下

Kconfig文件，在第7行加入：

config S3C2440_ADC

bool "ADC driver for S3C2440 development boards"

help

this is ADC driver for S3C2440 development boards

Notes: the touch-screen-driver required this option

修改同目录下Makefile文件，在第12行加入：

obj-$(CONFIG_S3C2440_ADC) += s3c2440_adc.o

配置内核，支持触摸屏：

Device Drivers --->

Character devices --->

[*] ADC driver for S3C2440 development boards

Input devices support --->

<*> Event interface

[*] Touchscreens --->

<*> Samsung S3C2410 touchscreen input driver

 

出现问题：

[root@localhost linux-2.6.31]# make zImage

  CHK     include/linux/version.h

make[1]: `include/asm-arm/mach-types.h' is up to date.

  CHK     include/linux/utsrelease.h

  SYMLINK include/asm -> include/asm-arm

  CALL    scripts/checksyscalls.sh

:1351:2: warning: #warning syscall migrate_pages not implemented

:1407:2: warning: #warning syscall pselect6 not implemented

:1411:2: warning: #warning syscall ppoll not implemented

:1451:2: warning: #warning syscall epoll_pwait not implemented

  CHK     include/linux/compile.h

  AS      .tmp_kallsyms1.o

  LD      .tmp_vmlinux2

  KSYM    .tmp_kallsyms2.S

/bin/sh: line 1: arm-linux-nm: command not found

No valid symbol.

make: *** [.tmp_kallsyms2.S] Error 1

解决办法：

#Vim /etc/profile

(将其他编辑链也加进来)

export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC

export PATH=/usr/local/arm/3.3.2/bin:$PATH

export PATH=/usr/local/arm/2.95.3/bin:$PATH

export PATH=/usr/local/arm/4.3.2/bin:$PATH

export PATH=/opt/toolchains/arm920t-eabi/bin:$PATH

 

成功启动输出：

s3c2410 TouchScreen successfully loaded

input: s3c2410 TouchScreen as /class/input/input0