这里我使用的是210的开发板　系统Android4.0.4 内核linux3.0.8

要用电阻屏一般都是使用tslib进行校准的　这里给个我在android上用的tslib

下载地址

直接把这个放在android源代码external文件夹下就可以　有几点须要注意的

tslib里我改了下Android.mk　曾经用的时候应该是模块名input被用了　所以我改成了input1

include $(CLEAR_VARS)LOCAL_MODULE_TAGS := engLOCAL_MODULE:= input1LOCAL_PRELINK_MODULE := falseLOCAL_CFLAGS = $(CFLAGS)LOCAL_C_INCLUDES = $(C_INCLUDES)LOCAL_SRC_FILES =  plugins/input-raw.cLOCAL_SHARED_LIBRARIES += libtsLOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/tsinclude $(BUILD_SHARED_LIBRARY)

所以对应的ts.conf里也要改　我的ts.conf内容例如以下

# Uncomment if you wish to use the linux input layer event interfacemodule_raw input1# Uncomment if you're using a Sharp Zaurus SL-5500/SL-5000d# module_raw collie# Uncomment if you're using a Sharp Zaurus SL-C700/C750/C760/C860# module_raw corgi# Uncomment if you're using a device with a UCB1200/1300/1400 TS interface# module_raw ucb1x00# Uncomment if you're using an HP iPaq h3600 or similar# module_raw h3600# Uncomment if you're using a Hitachi Webpad# module_raw mk712# Uncomment if you're using an IBM Arctic II# module_raw arctic2module pthres pmin=1module variance delta=30module dejitter delta=100module linear

直接放在system/etc/下就能够了　注意上面的　

module_raw input1

后面的input1是和上面模块名是一样的

ts.conf最好是系统编译完毕后　在拷贝过去　或者能够直接改tslib下的 然后制作文件系统的时候还须要添加对应的几个节点　例如以下

mkdir rootfs_dir/dev/input	mkdir rootfs_dir/dev/graphics	mknod rootfs_dir/dev/graphics/fb0 c 29 0	mknod rootfs_dir/dev/input/event1  c 13 65

由于我把校准放在了init之前　基本上设备节点都没有　所以这里我自己创建　我的电阻触摸驱动是event1所以这里要加上

然后是calibrate脚本

#!/bin/shexport TSLIB_TSDEVICE=/dev/input/event1export TSLIB_CALIBFILE=/system/etc/pointercalexport TSLIB_CONFFILE=/system/etc/ts.confexport TSLIB_CONSOLEDEVICE=noneexport TSLIB_FBDEVICE=/dev/graphics/fb0export TSLIB_PLUGINDIR=/system/lib/tsexec /sbin/ts_calibrate

这里的TSDEVICE和FBDEVICE详细依据你自己的改

然后就是校准后的数据回写到驱动里 校准完毕后在运行这个

/system/bin/cat /etc/pointercal > /proc/driver/micc_ts

后面的/proc/driver/micc_ts依据驱动里来的　这个你能够开个服务运行就能够了

然后就是加个idc这个直接拷贝一个　名字改成你的驱动里的名字即可了　我这里是s3c-ts

文件系统改动基本都是这样了　以下上驱动　

/* linux/drivers/input/touchscreen/s3c-ts.c * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Copyright (c) 2004 Arnaud Patard 
     
       * iPAQ H1940 touchscreen support * * ChangeLog * * 2004-09-05: Herbert Potzl 
      
        *	- added clock (de-)allocation code * * 2005-03-06: Arnaud Patard 
       
         *      - h1940_ -> s3c24xx (this driver is now also used on the n30 *        machines :P) *      - Debug messages are now enabled with the config option *        TOUCHSCREEN_S3C_DEBUG *      - Changed the way the value are read *      - Input subsystem should now work *      - Use ioremap and readl/writel * * 2005-03-23: Arnaud Patard 
        
          *      - Make use of some undocumented features of the touchscreen *        controller * * 2006-09-05: Ryu Euiyoul 
         
           *      - added power management suspend and resume code * */#include 
          
           #include 
           
            #include 
            
             #include 
             
              #include 
              
               #include 
               
                #include 
                
                 #include 
                 
                  #include 
                  
                   #include 
                   
                    #ifdef CONFIG_HAS_EARLYSUSPEND#include 
                    
                     #endif#include 
                     
                      #include 
                      
                       #include 
                       
                        #include 
                        
                         #include 
                         
                          #include 
                          
                           #include 
                           
                            #include 
                            
                             /* For ts->dev.id.version */#define S3C_TSVERSION 0x0101#define WAIT4INT(x) (((x)<<8) | \ S3C_ADCTSC_YM_SEN | S3C_ADCTSC_YP_SEN | \ S3C_ADCTSC_XP_SEN | S3C_ADCTSC_XY_PST(3))#define AUTOPST (S3C_ADCTSC_YM_SEN | S3C_ADCTSC_YP_SEN | \ S3C_ADCTSC_XP_SEN | S3C_ADCTSC_AUTO_PST | \ S3C_ADCTSC_XY_PST(0))#ifdef CONFIG_HAS_EARLYSUSPENDstatic void ts_early_suspend(struct early_suspend *h);static void ts_late_resume(struct early_suspend *h);#endif/* Touchscreen default configuration */struct s3c_ts_mach_info s3c_ts_default_cfg __initdata = { .delay = 10000, .presc = 49, .oversampling_shift = 2, .resol_bit = 10};/* * Definitions & global arrays. */static char *s3c_ts_name = "s3c-ts";static void __iomem *ts_base;static struct resource *ts_mem;static struct resource *ts_irq;static struct clk *ts_clock;static struct s3c_ts_info *ts;static struct proc_dir_entry *ts_proc_entry;signed long pointercal[7] = {1,0,0,0,1,0,1};static int SCREEN_X=800;static int SCREEN_Y=480;#define TSNUM 8static int ts_x[TSNUM];static int ts_y[TSNUM];//上层回写保存上层tslib校准后的数据static int ts_proc_write(struct file *file, const char *buffer, unsigned long count, void *data){ char buf[256]; unsigned long len; char *p = (char *)buf; int i,j; int flag = 1; memset(buf,0,256); len = min_t(unsigned long, sizeof(buf) - 1, count); if (copy_from_user(buf, buffer, len)) return count; j = 0; for(i=0;i
                             
                              =7) break; flag = 0; } if(p[0] == ' ') { flag = 1; } if(p[0] == '\t') { flag = 1; } p++; } return count;}static void data_select() {}static void touch_timer_fire(unsigned long data){ unsigned long data0; unsigned long data1; int updown; int x, y; long a,b,c,d,e,f,div; int i,j,tmp; data0 = readl(ts_base+S3C_ADCDAT0); data1 = readl(ts_base+S3C_ADCDAT1); updown = (!(data0 & S3C_ADCDAT0_UPDOWN)) && (!(data1 & S3C_ADCDAT1_UPDOWN)); if (updown) { if (ts->count) { a = pointercal[0]; b = pointercal[1]; c = pointercal[2]; d = pointercal[3]; e = pointercal[4]; f = pointercal[5]; div = pointercal[6]; for(j=(TSNUM-1);j>0;j--) for(i = 0; i < j;i++) { if (ts_x[i] < ts_x[i+1]) { tmp = ts_x[i+1]; ts_x[i+1] = ts_x[i]; ts_x[i] = tmp; } if (ts_y[i] < ts_y[i+1]) { tmp = ts_y[i+1]; ts_y[i+1] = ts_y[i]; ts_y[i] = tmp; } } tmp = 0; for (i=TSNUM/4;i<(TSNUM*3/4);i++) tmp+=ts_x[i]; ts->xp = tmp*2/TSNUM; tmp = 0; for (i=TSNUM/4;i<(TSNUM*3/4);i++) tmp+=ts_y[i]; ts->yp = tmp*2/TSNUM; //校准后上报 x = (a*ts->xp + b*ts->yp + c)/div; y = (d*ts->xp + e*ts->yp + f)/div; input_report_abs(ts->dev, ABS_X, x); input_report_abs(ts->dev, ABS_Y, y); input_report_key(ts->dev, BTN_TOUCH, 1); input_report_abs(ts->dev, ABS_PRESSURE, 1);//这个地方要注意前面是abs input_sync(ts->dev); } ts->xp = 0; ts->yp = 0; ts->count = 0; writel(S3C_ADCTSC_PULL_UP_DISABLE | AUTOPST, ts_base + S3C_ADCTSC); writel(readl(ts_base+S3C_ADCCON) | S3C_ADCCON_ENABLE_START, ts_base + S3C_ADCCON); } else { ts->count = 0; input_report_key(ts->dev, BTN_TOUCH, 0); input_report_abs(ts->dev, ABS_PRESSURE, 0); input_sync(ts->dev); writel(WAIT4INT(0), ts_base+S3C_ADCTSC); }}static struct timer_list touch_timer = TIMER_INITIALIZER(touch_timer_fire, 0, 0);static irqreturn_t stylus_updown(int irqno, void *param){ unsigned long data0; unsigned long data1; int updown; data0 = readl(ts_base + S3C_ADCDAT0); data1 = readl(ts_base + S3C_ADCDAT1); updown = (!(data0 & S3C_ADCDAT0_UPDOWN)) && (!(data1 & S3C_ADCDAT1_UPDOWN)); /* TODO we should never get an interrupt with updown set while * the timer is running, but maybe we ought to verify that the * timer isn't running anyways. */ if (updown) touch_timer_fire(0); if (ts->s3c_adc_con == ADC_TYPE_2) { __raw_writel(0x0, ts_base + S3C_ADCCLRWK); __raw_writel(0x0, ts_base + S3C_ADCCLRINT); } return IRQ_HANDLED;}static irqreturn_t stylus_action(int irqno, void *param){ unsigned long data0; unsigned long data1; data0 = readl(ts_base + S3C_ADCDAT0); data1 = readl(ts_base + S3C_ADCDAT1); if (ts->resol_bit == 12) { ts_x[ts->count] = (data0 & S3C_ADCDAT0_XPDATA_MASK_12BIT); ts_y[ts->count] = data1 & S3C_ADCDAT1_YPDATA_MASK_12BIT; } else { ts_x[ts->count] = S3C_ADCDAT0_XPDATA_MASK_12BIT - (data0 & S3C_ADCDAT0_XPDATA_MASK_12BIT); ts_y[ts->count] = S3C_ADCDAT1_YPDATA_MASK_12BIT - (data1 & S3C_ADCDAT1_YPDATA_MASK_12BIT); } ts->count++; if (ts->count < TSNUM) { writel(S3C_ADCTSC_PULL_UP_DISABLE | AUTOPST, ts_base + S3C_ADCTSC); writel(readl(ts_base + S3C_ADCCON) | S3C_ADCCON_ENABLE_START, ts_base + S3C_ADCCON); } else { mod_timer(&touch_timer, jiffies + 1); writel(WAIT4INT(1), ts_base + S3C_ADCTSC); } if (ts->s3c_adc_con == ADC_TYPE_2) { __raw_writel(0x0, ts_base+S3C_ADCCLRWK); __raw_writel(0x0, ts_base+S3C_ADCCLRINT); } return IRQ_HANDLED;}static struct s3c_ts_mach_info *s3c_ts_get_platdata(struct device *dev){ if (dev->platform_data != NULL) return (struct s3c_ts_mach_info *)dev->platform_data; return &s3c_ts_default_cfg;}/* * The functions for inserting/removing us as a module. */static int __init s3c_ts_probe(struct platform_device *pdev){ struct resource *res; struct device *dev; struct input_dev *input_dev; struct s3c_ts_mach_info *s3c_ts_cfg; int ret, size; int irq_flags = 0;#if defined(CONFIG_FB_S3C_AT070) SCREEN_X = 800; SCREEN_Y = 480;#endif dev = &pdev->dev; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(dev, "no memory resource specified\n"); return -ENOENT; } size = (res->end - res->start) + 1; ts_mem = request_mem_region(res->start, size, pdev->name); if (ts_mem == NULL) { dev_err(dev, "failed to get memory region\n"); ret = -ENOENT; goto err_req; } ts_base = ioremap(res->start, size); if (ts_base == NULL) { dev_err(dev, "failed to ioremap() region\n"); ret = -EINVAL; goto err_map; } ts_clock = clk_get(&pdev->dev, "adc"); if (IS_ERR(ts_clock)) { dev_err(dev, "failed to find watchdog clock source\n"); ret = PTR_ERR(ts_clock); goto err_clk; } clk_enable(ts_clock); s3c_ts_cfg = s3c_ts_get_platdata(&pdev->dev); if ((s3c_ts_cfg->presc & 0xff) > 0) writel(S3C_ADCCON_PRSCEN | S3C_ADCCON_PRSCVL(s3c_ts_cfg->presc & 0xFF), ts_base+S3C_ADCCON); else writel(0, ts_base + S3C_ADCCON); /* Initialise registers */ if ((s3c_ts_cfg->delay & 0xffff) > 0) writel(s3c_ts_cfg->delay & 0xffff, ts_base + S3C_ADCDLY); if (s3c_ts_cfg->resol_bit == 12) { switch (s3c_ts_cfg->s3c_adc_con) { case ADC_TYPE_2: writel(readl(ts_base + S3C_ADCCON) | S3C_ADCCON_RESSEL_12BIT, ts_base + S3C_ADCCON); break; case ADC_TYPE_1: writel(readl(ts_base + S3C_ADCCON) | S3C_ADCCON_RESSEL_12BIT_1, ts_base + S3C_ADCCON); break; default: dev_err(dev, "this type of AP isn't supported !\n"); break; } } writel(WAIT4INT(0), ts_base + S3C_ADCTSC); ts = kzalloc(sizeof(struct s3c_ts_info), GFP_KERNEL); input_dev = input_allocate_device(); if (!input_dev) { ret = -ENOMEM; goto err_alloc; } ts->dev = input_dev; ts->dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); ts->dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); if (s3c_ts_cfg->resol_bit == 12) { input_set_abs_params(ts->dev,ABS_X, 0, SCREEN_X, 0, 0); input_set_abs_params(ts->dev,ABS_Y, 0, SCREEN_Y, 0, 0); } else { input_set_abs_params(ts->dev, ABS_X, 0, SCREEN_X, 0, 0); input_set_abs_params(ts->dev, ABS_Y, 0, SCREEN_Y, 0, 0); } input_set_abs_params(ts->dev, ABS_PRESSURE, 0, 1, 0, 0); sprintf(ts->phys, "input(ts)"); ts->dev->name = s3c_ts_name;//文件系统里idc名字与这个要一致 ts->dev->phys = ts->phys; ts->dev->id.bustype = BUS_RS232; ts->dev->id.vendor = 0xDEAD; ts->dev->id.product = 0xBEEF; ts->dev->id.version = S3C_TSVERSION; ts->shift = s3c_ts_cfg->oversampling_shift; ts->resol_bit = s3c_ts_cfg->resol_bit; ts->s3c_adc_con = s3c_ts_cfg->s3c_adc_con;#ifdef CONFIG_HAS_EARLYSUSPEND ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; ts->early_suspend.suspend = ts_early_suspend; ts->early_suspend.resume = ts_late_resume; register_early_suspend(&ts->early_suspend);#endif /* For IRQ_PENDUP */ ts_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (ts_irq == NULL) { dev_err(dev, "no irq resource specified\n"); ret = -ENOENT; goto err_irq; } ret = request_irq(ts_irq->start, stylus_updown, irq_flags, "s3c_updown", ts); if (ret != 0) { dev_err(dev, "s3c_ts.c: Could not allocate ts IRQ_PENDN !\n"); ret = -EIO; goto err_irq; } /* For IRQ_ADC */ ts_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 1); if (ts_irq == NULL) { dev_err(dev, "no irq resource specified\n"); ret = -ENOENT; goto err_irq; } ret = request_irq(ts_irq->start, stylus_action, irq_flags, "s3c_action", ts); if (ret != 0) { dev_err(dev, "s3c_ts.c: Could not allocate ts IRQ_ADC !\n"); ret = -EIO; goto err_irq; } printk(KERN_INFO "%s got loaded successfully : %d bits\n", s3c_ts_name, s3c_ts_cfg->resol_bit); /* All went ok, so register to the input system */ ret = input_register_device(ts->dev); if (ret) { dev_err(dev, "Could not register input device(touchscreen)!\n"); ret = -EIO; goto fail; } ts_proc_entry = create_proc_entry("driver/micc_ts", 0, NULL); //创建上层节点 if (ts_proc_entry) { ts_proc_entry->write_proc = ts_proc_write; } return 0;fail: free_irq(ts_irq->start, ts->dev); free_irq(ts_irq->end, ts->dev);err_irq: input_free_device(input_dev); kfree(ts);err_alloc: clk_disable(ts_clock); clk_put(ts_clock);err_clk: iounmap(ts_base);err_map: release_resource(ts_mem); kfree(ts_mem);err_req: return ret;}static int s3c_ts_remove(struct platform_device *dev){ printk(KERN_INFO "s3c_ts_remove() of TS called !\n"); disable_irq(IRQ_ADC); disable_irq(IRQ_PENDN); free_irq(IRQ_PENDN, ts->dev); free_irq(IRQ_ADC, ts->dev); if (ts_clock) { clk_disable(ts_clock); clk_put(ts_clock); ts_clock = NULL; }#ifdef CONFIG_HAS_EARLYSUSPEND unregister_early_suspend(&ts->early_suspend);#endif input_unregister_device(ts->dev); iounmap(ts_base); return 0;}#ifdef CONFIG_PMstatic unsigned int adccon, adctsc, adcdly;static int s3c_ts_suspend(struct platform_device *dev, pm_message_t state){ adccon = readl(ts_base+S3C_ADCCON); adctsc = readl(ts_base+S3C_ADCTSC); adcdly = readl(ts_base+S3C_ADCDLY); disable_irq(IRQ_ADC); disable_irq(IRQ_PENDN); clk_disable(ts_clock); return 0;}static int s3c_ts_resume(struct platform_device *pdev){ clk_enable(ts_clock); writel(adccon, ts_base+S3C_ADCCON); writel(adctsc, ts_base+S3C_ADCTSC); writel(adcdly, ts_base+S3C_ADCDLY); writel(WAIT4INT(0), ts_base+S3C_ADCTSC); enable_irq(IRQ_ADC); enable_irq(IRQ_PENDN); return 0;}#else#define s3c_ts_suspend NULL#define s3c_ts_resume NULL#endif#ifdef CONFIG_HAS_EARLYSUSPENDstatic void ts_early_suspend(struct early_suspend *h){ struct s3c_ts_info *ts; ts = container_of(h, struct s3c_ts_info, early_suspend); s3c_ts_suspend(NULL, PMSG_SUSPEND);}static void ts_late_resume(struct early_suspend *h){ struct s3c_ts_info *ts; ts = container_of(h, struct s3c_ts_info, early_suspend); s3c_ts_resume(NULL);}#endifstatic struct platform_driver s3c_ts_driver = { .probe = s3c_ts_probe, .remove = s3c_ts_remove, .suspend = s3c_ts_suspend, .resume = s3c_ts_resume, .driver = { .owner = THIS_MODULE, .name = "s3c-ts", },};static char banner[] __initdata = KERN_INFO \ "S5P Touchscreen driver, (c) 2008 Samsung Electronics\n";static int __init s3c_ts_init(void){ printk(banner); return platform_driver_register(&s3c_ts_driver);}static void __exit s3c_ts_exit(void){ platform_driver_unregister(&s3c_ts_driver);}module_init(s3c_ts_init);module_exit(s3c_ts_exit);MODULE_AUTHOR("Samsung AP");MODULE_DESCRIPTION("S5P touchscreen driver");MODULE_LICENSE("GPL");
                             
                            
                           
                          
                         
                        
                       
                      
                     
                    
                   
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

仅仅是在ＡＤＣ驱动里加了一些东西　详细ＡＤＣ驱动就不说了　大致的一些解释都写上面了　基本上就这个样了

改动完毕后　測试效果还是不错地.