首页 > 代码库 > andoid电阻触摸移植
andoid电阻触摸移植
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 http://download.csdn.net/detail/hclydao/8074069
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 := eng LOCAL_MODULE:= input1 LOCAL_PRELINK_MODULE := false LOCAL_CFLAGS = $(CFLAGS) LOCAL_C_INCLUDES = $(C_INCLUDES) LOCAL_SRC_FILES = plugins/input-raw.c LOCAL_SHARED_LIBRARIES += libts LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/ts include $(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 interface module_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 arctic2 module pthres pmin=1 module variance delta=30 module dejitter delta=100 module 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/sh export TSLIB_TSDEVICE=/dev/input/event1 export TSLIB_CALIBFILE=/system/etc/pointercal export TSLIB_CONFFILE=/system/etc/ts.conf export TSLIB_CONSOLEDEVICE=none export TSLIB_FBDEVICE=/dev/graphics/fb0 export TSLIB_PLUGINDIR=/system/lib/ts exec /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 <arnaud.patard@rtp-net.org>
* iPAQ H1940 touchscreen support
*
* ChangeLog
*
* 2004-09-05: Herbert Potzl <herbert@13thfloor.at>
* - added clock (de-)allocation code
*
* 2005-03-06: Arnaud Patard <arnaud.patard@rtp-net.org>
* - 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 <arnaud.patard@rtp-net.org>
* - Make use of some undocumented features of the touchscreen
* controller
*
* 2006-09-05: Ryu Euiyoul <ryu.real@gmail.com>
* - added power management suspend and resume code
*
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/serio.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#include <linux/io.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/regs-adc.h>
#include <mach/ts-s3c.h>
#include <mach/irqs.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
/* 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_EARLYSUSPEND
static 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 = http://www.mamicode.com/{"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 8
static 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<len;i++)
{
if(flag)
{
pointercal[j] = simple_strtol(p, &p, 10);
j++;
if(j>=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_PM
static 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_EARLYSUSPEND
static 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);
}
#endif
static 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 = http://www.mamicode.com/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.
andoid电阻触摸移植
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。