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触摸屏驱动移植

竟然忘了发……

复制s3c2410_ts.c到linux2.6.14/drivers/input/touchscreen 目录下
以及复制s3c2410_ts.h到linux2.6.14/include/asm-arm/arch-s3c2410目录下
 
-------------------修改Makefile------------------
修改 linux2.6.14/drivers/input/touchscreen 目录下的 makefile 

在最后添加:obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o

------------------修改Konfig--------------------
修改 linux2.6.14/ drivers/input/touchscreen/Kconfig

config TOUCHSCREEN_S3C2410
 tristate "Samsung S3C2410 touchscreen input driver"
 depends on ARCH_S3C2410 && INPUT && INPUT_TOUCHSCREEN
 select SERIO
 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.

config TOUCHSCREEN_S3C2410_DEBUG
 boolean "Samsung S3C2410 touchscreen debug messages"
 depends on TOUCHSCREEN_S3C2410
 help
   Select this if you want debug messages
  
--------------配置内核---------------
Device drivers
          Input device support
                     Touchscreens
                      <*>Samsung S3C2410 touchscreen input driver
                      []Samsung s3c2410 touchscreen debug message
---------------- --------------------------------------------------------
在 /linux-2.6.14/arch/arm/mach-s3c2410/mach-smdk2410.c, 中增加如下内容:
#include
#include
     static struct s3c2410_ts_mach_info sbc2410_ts_cfg __initdata = {
     .delay = 10000,
     .presc = 49,
     .oversampling_shift = 2,
     };
     在smdk2410_devices结构中,添加:
     &s3c_device_ts,
     在smdk2410_map_io函数中添加:
     set_s3c2410ts_info(&sbc2410_ts_cfg);  
--------------------------  ----------------------
在 /linux-2.6.14/ arch/arm/mach-s3c2410/devs.h 文件中添加:
     extern struct platform_device s3c_device_ts;
 
-----------------------------------------------
在arch/arm/mach-s3c2410/devs.c文件中添加如下几行:
/*for s3c2410 touchscreen*/
#include
/* Touchscreen */
static struct s3c2410_ts_mach_info s3c2410ts_info;

void __init set_s3c2410ts_info(struct s3c2410_ts_mach_info *hard_s3c2410ts_info){
memcpy(&s3c2410ts_info,hard_s3c2410ts_info,sizeof(struct s3c2410_ts_mach_info));
}
EXPORT_SYMBOL(set_s3c2410ts_info);

struct platform_device s3c_device_ts = {
 .name = "s3c2410-ts",
 .id   = -1,
 .dev  = {
 .platform_data = &s3c2410ts_info,
 }
};
EXPORT_SYMBOL(s3c_device_ts);
------------------------------------------------------------------
修改include/asm-arm/arch-s3c2410/regs-adc.h
#define S3C2410_ADCTSC_XY_PST (0×3<<0)改为define S3C2410_ADCTSC_XY_PST(x) (((x)&0×3)<<0)

编译成功,但是现在好像有点问题,待测

  if (ts.count != 0) {
   ts.xp >>= ts.shift;
   ts.yp >>= ts.shift;
//reset coordinate system add by lili
   tmp = ts.xp;
   ts.xp = ts.yp;
   ts.yp = tmp;
//调试信息。
#ifdef CONFIG_TOUCHSCREEN_S3C2410_DEBUG
             {
                 struct timeval tv;
                 do_gettimeofday(&tv);
                 printk(DEBUG_LVL "T: %06d, X: %03ld, Y: %03ld\n", (int)tv.tv_usec, ts.xp, ts.yp);
             }
#endif

加上调试信息。

cat /dev/ts0 然后触摸屏幕,打印出来的是乱码。
改变printk 打印级别
echo 8 > /proc/sys/kernel/printk
打印所有内核信息,再触摸,有坐标显示了。

 

 

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