触摸屏移植（成功）for2.6.rtf

包含触摸屏驱动源码(for s3c2410)以及触摸屏驱动,USB键盘鼠标移植详细步骤,tslib触摸屏校准程序的移植使用,包括错误解决方法.

                 from include/linux/fs.h:12,
                 from include/linux/mm.h:15,
                 from include/linux/poll.h:11,
                 from drivers/input/touchscreen/s3c2410_ts.c:85:
include/linux/interrupt.h:33:1: warning: this is the location of the previous definition
drivers/input/touchscreen/s3c2410_ts.c: In function `touch_timer_fire':
drivers/input/touchscreen/s3c2410_ts.c:244: error: called object is not a function
drivers/input/touchscreen/s3c2410_ts.c:275: error: called object is not a function
drivers/input/touchscreen/s3c2410_ts.c:200: warning: unused variable `updown'
drivers/input/touchscreen/s3c2410_ts.c:200: warning: unused variable `i'
drivers/input/touchscreen/s3c2410_ts.c: In function `stylus_updown':
drivers/input/touchscreen/s3c2410_ts.c:294: warning: unused variable `lcdstate'
drivers/input/touchscreen/s3c2410_ts.c:294: warning: unused variable `lcdenble'
drivers/input/touchscreen/s3c2410_ts.c: In function `stylus_action':
drivers/input/touchscreen/s3c2410_ts.c:365: error: called object is not a function
drivers/input/touchscreen/s3c2410_ts.c:376: error: called object is not a function
drivers/input/touchscreen/s3c2410_ts.c: In function `s3c2410ts_probe':
drivers/input/touchscreen/s3c2410_ts.c:430: warning: implicit declaration of function `clk_get'
drivers/input/touchscreen/s3c2410_ts.c:430: warning: assignment makes pointer from integer without a cast
drivers/input/touchscreen/s3c2410_ts.c:440: warning: implicit declaration of function `clk_use'
drivers/input/touchscreen/s3c2410_ts.c:442: warning: implicit declaration of function `clk_enable'
drivers/input/touchscreen/s3c2410_ts.c:486: error: called object is not a function
drivers/input/touchscreen/s3c2410_ts.c:533: warning: passing arg 2 of `request_irq' from incompatible pointer type
drivers/input/touchscreen/s3c2410_ts.c:545: warning: passing arg 2 of `request_irq' from incompatible pointer type
drivers/input/touchscreen/s3c2410_ts.c: In function `s3c2410ts_remove':
drivers/input/touchscreen/s3c2410_ts.c:588: warning: implicit declaration of function `clk_disable'
drivers/input/touchscreen/s3c2410_ts.c:590: warning: implicit declaration of function `clk_unuse'
drivers/input/touchscreen/s3c2410_ts.c:592: warning: implicit declaration of function `clk_put'
drivers/input/touchscreen/s3c2410_ts.c: In function `touch_timer_fire':
drivers/input/touchscreen/s3c2410_ts.c:244: warning: statement with no effect
drivers/input/touchscreen/s3c2410_ts.c:275: warning: statement with no effect
drivers/input/touchscreen/s3c2410_ts.c: In function `stylus_action':
drivers/input/touchscreen/s3c2410_ts.c:365: warning: statement with no effect
drivers/input/touchscreen/s3c2410_ts.c:376: warning: statement with no effect
drivers/input/touchscreen/s3c2410_ts.c: In function `s3c2410ts_probe':
drivers/input/touchscreen/s3c2410_ts.c:486: warning: statement with no effect
make[3]: *** [drivers/input/touchscreen/s3c2410_ts.o] 错误 1
make[2]: *** [drivers/input/touchscreen] 错误 2
make[1]: *** [drivers/input] 错误 2
make: *** [drivers] 错误 2
在regs-adc.h中加入相应内容：
/* linux/include/asm/arch-s3c2410/regs-adc.h
 *
 * Copyright (c) 2004 Shannon Holland <[e-mail]>
 *
 * This program is free software; yosu can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * S3C2410 ADC registers
 *
 *  Changelog:
 *    27-09-2004     SAH     Created file
*/

#ifndef __ASM_ARCH_REGS_ADC_H
#define __ASM_ARCH_REGS_ADC_H "regs-adc.h"

#define S3C2410_ADCREG(x) (x)

#define S3C2410_ADCCON	   S3C2410_ADCREG(0x00)
#define S3C2410_ADCTSC	   S3C2410_ADCREG(0x04)
#define S3C2410_ADCDLY	   S3C2410_ADCREG(0x08)
#define S3C2410_ADCDAT0	   S3C2410_ADCREG(0x0C)
#define S3C2410_ADCDAT1	   S3C2410_ADCREG(0x10)
/***************************add by lfc***************************/
#define S3C2410_ADC_IN0                 0
#define S3C2410_ADC_IN1                 1
#define S3C2410_ADC_IN2                 2
#define S3C2410_ADC_IN3                 3
#define S3C2410_ADC_IN4                 4
#define S3C2410_ADC_IN5                 5
#define S3C2410_ADC_IN6                 6
#define S3C2410_ADC_IN7                 7
#define S3C2410_ADC_BUSY                1
#define S3C2410_ADC_READY               0
#define S3C2410_NOP_MODE                0
#define S3C2410_X_AXIS_MODE             1
#define S3C2410_Y_AXIS_MODE             2
#define S3C2410_WAIT_INT_MODE           3
/*****************************end add****************************/


/* ADCCON Register Bits */
#define S3C2410_ADCCON_ECFLG		(1<<15)
#define S3C2410_ADCCON_PRSCEN		(1<<14)
#define S3C2410_ADCCON_PRSCVL(x)	(((x)&0xFF)<<6)
#define S3C2410_ADCCON_PRSCVLMASK	(0xFF<<6)
#define S3C2410_ADCCON_SELMUX(x)	(((x)&0x7)<<3)
#define S3C2410_ADCCON_MUXMASK		(0x7<<3)
#define S3C2410_ADCCON_STDBM		(1<<2)
#define S3C2410_ADCCON_READ_START	(1<<1)
#define S3C2410_ADCCON_ENABLE_START	(1<<0)
#define S3C2410_ADCCON_STARTMASK	(0x3<<0)

/**************************add by lfc***********************/
#define S3C2410_ADCCON_PRSCDIS          (S3C2410_ADCCON_PRSCEN*0)
/***************************end add*************************/

/* ADCTSC Register Bits */
/**************************add by lfc************************/
#define S3C2410_UD_SEN                  (1<<8)
/***************************end add**************************/

#define S3C2410_ADCTSC_YM_SEN		(1<<7)
#define S3C2410_ADCTSC_YP_SEN		(1<<6)
#define S3C2410_ADCTSC_XM_SEN		(1<<5)
#define S3C2410_ADCTSC_XP_SEN		(1<<4)
#define S3C2410_ADCTSC_PULL_UP_DISABLE	(1<<3)
#define S3C2410_ADCTSC_AUTO_PST		(1<<2)
#define S3C2410_ADCTSC_XY_PST		(0x3<<0)
/**********************modify by lfc**************************/
#define S3C2410_ADCTSC_XY_PST(x)        (((x)&0x3)<<0)
#define S3C2410_DOWN_INT                (S3C2410_UD_SEN*0)
#define S3C2410_UP_INT                  (S3C2410_UD_SEN*1)
#define S3C2410_ADCTSC_XM_HIZ           (S3C2410_ADCTSC_XM_SEN*0)
#define S3C2410_ADCTSC_XM_GND           (S3C2410_ADCTSC_XM_SEN*1)
#define S3C2410_ADCTSC_XP_EXTVLT        (S3C2410_ADCTSC_XP_SEN*0)
#define S3C2410_ADCTSC_XP_AIN           (S3C2410_ADCTSC_XP_SEN*1)
#define S3C2410_ADCTSC_YM_HIZ           (S3C2410_ADCTSC_YM_SEN*0)
#define S3C2410_ADCTSC_YM_GND           (S3C2410_ADCTSC_YM_SEN*1)
#define S3C2410_ADCTSC_YP_EXTVLT        (S3C2410_ADCTSC_YP_SEN*0)
#define S3C2410_ADCTSC_YP_AIN           (S3C2410_ADCTSC_YP_SEN*1)

#define S3C2410_ADCTSC_XP_PULL_UP_EN   (S3C2410_ADCTSC_XP_PULL_UP_DIS*0)
/************************end modify***************************/

/* ADCDAT0 Bits */
#define S3C2410_ADCDAT0_UPDOWN		(1<<15)
#define S3C2410_ADCDAT0_AUTO_PST	(1<<14)
#define S3C2410_ADCDAT0_XY_PST		(0x3<<12)
#define S3C2410_ADCDAT0_XPDATA_MASK	(0x03FF)

/* ADCDAT1 Bits */
#define S3C2410_ADCDAT1_UPDOWN		(1<<15)
#define S3C2410_ADCDAT1_AUTO_PST	(1<<14)
#define S3C2410_ADCDAT1_XY_PST		(0x3<<12)
#define S3C2410_ADCDAT1_YPDATA_MASK	(0x03FF)

/*added by Zxh*/
#define S3C2410_ADCTSC_XY_PST_N     (0x0<<0)
#define S3C2410_ADCTSC_XY_PST_X     (0x1<<0)
#define S3C2410_ADCTSC_XY_PST_Y  (0x2<<0)
#define S3C2410_ADCTSC_XY_PST_W   (0x3<<0)
/*added by Zxh*/

#endif /* __ASM_ARCH_REGS_ADC_H */



后重新编译解决问题。
要选中input device support中的Touchscreen interface
内核配置中选择device driver-->graphics support-->logo configuration
重新编译内核，烧到开发板中。就OK了

学会ctags命令可cscope查找一下

按理说，这样做过后，启动开发板应该出现小企鹅，但结果并没有显示。后来经过搜索相应资料，了解到这可能是framebuffer驱动没搞好的缘故。因为该驱动和屏幕分辩率有关。2007.6.12日早上和潘建聊起来，他说需要在bootloader启动时加参数VGA,如在grub.conf中加入VGA=0x...，但这一般适用于PC机，在嵌入式系统中

胡军国说：最好编译tslib，用它来检测触摸屏。tslib可以直接从input层获取坐标信息


以下是成功显示小企鹅的步骤：
启动开发板，出现小企鹅表明framebuffer驱动成功（LCD驱动）成功。先前没有出现是因为framebuffer驱动没搞好。
也就是说先要移植LCD驱动。
我们通过上面的工作，在串口中已经看到了 linux2.6.14 的启动信息，但是在 LCD 上没有任何显示，这是因为我们还没有对 LCD 进行初始化， linux2.6.14 已经包含了 lcd 的驱动程序，驱动程序位于 /linux-2.6.14/drivers/video/ 目录下，文件名是 s3c2410fb.c, 头文件是 s3c2410fb.h. 。我们在这里可以不研究这个文件。只要我们对 lcd 进行以下初始化就可以了。

       我们打开 /linux-2.6.14/arch/arm/mach-s3c2410/mach-smdk2410.c, 在这个文件里增加包含文件：

    #include <asm/arch/fb.h>


       然后增加 LCD 初始化的代码，

    static struct s3c2410fb_mach_info hfrk_lcdcfg __initdata = {

        .fixed_syncs=       0,

        .regs={

            .lcdcon1=   S3C2410_LCDCON1_TFT16BPP | \

                        S3C2410_LCDCON1_TFT | \

                        S3C2410_LCDCON1_CLKVAL(6),

 

            .lcdcon2=   S3C2410_LCDCON2_VBPD(2) | \

                        S3C2410_LCDCON2_LINEVAL(319) | \

                        S3C2410_LCDCON2_VFPD(0) | \

                        S3C2410_LCDCON2_VSPW(4),

 

            .lcdcon3=   S3C2410_LCDCON3_HBPD(47) | \

                        S3C2410_LCDCON3_HOZVAL(239) | \

                        S3C2410_LCDCON3_HFPD(15),

 

            .lcdcon4=   S3C2410_LCDCON4_MVAL(1) | \

                        S3C2410_LCDCON4_HSPW(31),

 

            .lcdcon5=   S3C2410_LCDCON5_FRM565 | \

                        S3C2410_LCDCON5_INVVLINE | \

                        S3C2410_LCDCON5_HWSWP,

        },

        .lpcsel=    0x0,

        .gpccon=    0xaaaaaaaa,

        .gpccon_mask=   0xffffffff,

        .gpcup=     0xffffffff,

        .gpcup_mask=    0xffffffff,

        .gpdcon=    0xaaaaaaaa,

        .gpdcon_mask=   0x0,

        .gpdup=     0xffffffff,

        .gpdup_mask=    0xffffffff,

        .width=     240,

        .height=    320,

        .xres=      {240,240,240},

        .yres=      {320,320,320},

        .bpp=       {16,16,16},

    };

    static void __init sdmk2410_init(void)

    {

        set_s3c2410fb_info(&hfrk_lcdcfg);

    }

       在系统初始化中增加对 lcd 的初始化。

    MACHINE_START(SMDK2410, "SMDK2410") /* @TODO: request a new identifier and switch

                    * to SMDK2410 */

        /* Maintainer: Jonas Dietsche */

        ……

        .map_io     = smdk2410_map_io,

        .init_irq   = smdk2410_init_irq,

        .init_machine   = sdmk2410_init, /* 这一句是新增加的*/

        .timer      = &s3c24xx_timer,

    MACHINE_END
       现在我们重新保存这个文件，现在需要重新进入配置菜单，检查一下 LCD 的相关选项是否选上， [Device Drivers->Graphics support->] 这个配置菜单下面是相关 LCD 的配置。回到根目录下，输入 make 编译内核，重现烧写内核到开发板，再次启动 linxu2.6.14 以后就可以在 lcd 上看到一个小的企鹅。我们的 lcd 驱动已经移植完成了。