Linux-2.6.38到Tiny6410的移植手册

这次lcd和触摸屏智能一起移植了，至于原因见详细说明，http://www.linuxidc.com/Linux/2012-01/52087.htm。主要是一线触摸的原因，它劫持了lcd的背光控制，这个花了我三天时间呀才发现，友善真是的。先弄lcd屏吧vi arch/arm/plat-samsung/include/plat/map-base.h
第39行
增加
#define S3C_VA_LCD     S3C_ADDR（0x01100000）    /* LCD */从友善的源码中将arch/arm/mach-s3c64xx/include/mach/regs-lcd.h拷贝过来从友善的源码中将drivers/video/samsung整个文件夹拷贝过来，是不是有点拿来主义，呵呵 vi drivers/video/Kconfig
第2068行增加
source "drivers/video/samsung/Kconfig"vi drivers/video/Makefile
120行增加
obj-$（CONFIG_FB_S3C_EXT）      += samsung/vi arch/arm/mach-s3c64xx/mach-mini6410.c
48行增加
#include <linux/delay.h>136行mini6410_lcd_power_set函数里的内容改成
        if （power） {
                gpio_direction_output（S3C64XX_GPF（13）, 1）;          //GPF13是USBpower用的，与lcd无关
                gpio_direction_output（S3C64XX_GPF（15）, 1）;          //GPF15是是真正的一线控制线连PWM1                /* fire nRESET on power up */
                gpio_direction_output（S3C64XX_GPN（5）, 0）;          //GPN5好像与lcd也无关，先copy吧
                msleep（10）;
                gpio_direction_output（S3C64XX_GPN（5）, 1）;
                msleep（1）;
        } else {
                gpio_direction_output（S3C64XX_GPF（15）, 0）;
                gpio_direction_output（S3C64XX_GPF（13）, 0）;
        }
190行
增加
   {
                /* LCD support */
                .virtual    = （unsigned long）S3C_VA_LCD,
                .pfn        = __phys_to_pfn（S3C_PA_FB）,
                .length     = SZ_16K,
                .type       = MT_DEVICE,
        },
437行增加
    gpio_request（S3C64XX_GPN（5）, "LCD power"）;    gpio_request（S3C64XX_GPF（13）, "LCD power"）;去掉gpio_request（S3C64XX_GPE（0）, "LCD power"）;make menuconfig
Power management options --->
    [ ] Power Management support   一定要去掉，不然会有
drivers/video/samsung/s3cfb_fimd4x.c:1440:2: error: implicit declaration of function "s3c6410_pm_do_save"的错误，郁闷了半天 <*> Support for frame buffer devices --->
     < >   Samsung S3C framebuffer support
        <*>   S3C Framebuffer Support （eXtended）
                Select LCD Type （4.3 inch 480x272 TFT LCD） --->
        <*>   Advanced options for S3C Framebuffer
                Select BPP（Bits Per Pixel）（16 BPP） --->
        （4）   Number of Framebuffers
        [ ]       Enable Virtual Screen （NEW）
        [*]       Enable Double Buffering
[ ] Backlight & LCD device support ---> Console display driver support --->
    <*> Framebuffer Console support    这个也一定要选，不然会有
drivers/built-in.o:（.data+0x174）: undefined reference to `soft_cursor"的错误，其中解决这些错误花了我不少时间。

[*] Bootup logo --->
      [ ]   Standard black and white Linux logo
      [ ]   Standard 16-color Linux logo
      [*]   Standard 224-color Linux logo
其他的默认就行这时lcd的驱动其实已经移植好了，引导信息也正常，如
S3C_LCD clock got enabled :: 133.000 Mhz
LCD TYPE :: N43 will be initialized
Window[0] - FB1: map_video_memory: clear ff600000:0007f800
            FB1: map_video_memory: dma=5d780000 cpu=ff600000 size=0007f800
Window[0] - FB2: map_video_memory: clear ff63fc00:0003fc00
            FB2: map_video_memory: dma=5d7bfc00 cpu=ff63fc00 size=0003fc00
Console: switching to colour frame buffer device 60x34
fb0: s3cfb frame buffer device
Window[1] - FB1: map_video_memory: clear ff680000:0007f800
            FB1: map_video_memory: dma=5cc00000 cpu=ff680000 size=0007f800
Window[1] - FB2: map_video_memory: clear ff6bfc00:0003fc00
            FB2: map_video_memory: dma=5cc3fc00 cpu=ff6bfc00 size=0003fc00
fb1: s3cfb frame buffer device
Window[2] - FB1: map_video_memory: clear ff700000:0003fc00
            FB1: map_video_memory: dma=5d740000 cpu=ff700000 size=0003fc00
fb2: s3cfb frame buffer device
Window[3] - FB1: map_video_memory: clear ff740000:0003fc00
            FB1: map_video_memory: dma=5cc80000 cpu=ff740000 size=0003fc00
fb3: s3cfb frame buffer device但lcd屏却没有反应，百思不得其解。后来终于发现了，过程明天在说
先做一线触摸的驱动拷贝
arch/arm/mach-s3c64xx/dev-ts-mini6410.c
arch/arm/mach-s3c64xx/include/mach/ts.h
arch/arm/plat-samsung/include/plat/regs-adc.h
drivers/input/touchscreen/mini6410_1wire_host.c
drivers/input/touchscreen/mini6410-ts.c
drivers/input/touchscreen/ts-if.c
到相应目录vi arch/arm/mach-s3c64xx/Makefile
末尾增加
obj-$（CONFIG_TOUCHSCREEN_MINI6410） += dev-ts-mini6410.ovi drivers/input/touchscreen/Makefile
末尾加入
obj-$（CONFIG_TOUCHSCREEN_MINI6410）    += mini6410-ts.o
obj-$（CONFIG_TOUCHSCREEN_1WIRE）        += mini6410_1wire_host.o
obj-$（CONFIG_FB_S3C_EXT_TFT800480）    += ts-if.o
obj-$（CONFIG_FB_S3C_EXT_TFT480272）    += ts-if.o
obj-$（CONFIG_FB_S3C_EXT_X240320）    += ts-if.ovi drivers/input/touchscreen/Kconfig
190行左右加入
config TOUCHSCREEN_MINI6410
        tristate "S3C touchscreen driver for Mini6410"
        depends on ARCH_S3C2410 || ARCH_S3C64XX || ARCH_S5P64XX || ARCH_S5PC1XX
        default y
        help
          Say Y here to enable the driver for the touchscreen on the
          FriendlyARM Mini6410 development board.          If unsure, say N.          To compile this driver as a module, choose M here: the
          module will be called mini6410-ts.config TOUCHSCREEN_1WIRE
        tristate "Mini6410 1-Wire host and Touch Screen Driver"
        depends on MACH_MINI6410
        help
          Say Y here to enable the 1-Wire host and Touch Screen driver for
          FriendlyARM Mini6410 development board.          If unsure, say N.          To compile this driver as a module, choose M here: the
          module will be called mini6410_1wire_host.
vi arch/arm/mach-s3c64xx/mach-mini6410.c
44行将#include <plat/ts.h>
   改成#include <mach/ts.h>320行将
static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
        .delay                  = 10000,
        .presc                  = 49,
        .oversampling_shift     = 2,
};
改成
static struct s3c_ts_mach_info s3c_ts_platform __initdata = {
        .delay                  = 0xFFFF,
        .presc                  = 0xFF,
        .oversampling_shift     = 2,
        .resol_bit              = 12,
        .s3c_adc_con    = ADC_TYPE_2,
};436行将
s3c24xx_ts_set_platdata（&s3c_ts_platform）;
改成 s3c_ts_set_platdata（&s3c_ts_platform）;vi arch/arm/plat-samsung/Makefile
60行
注释掉obj-$（CONFIG_SAMSUNG_DEV_TS）   += dev-ts.o
不然会有multiple definition of `s3c_device_ts"的错误很奇怪，友善的源码CONFIG_SAMSUNG_DEV_TS=n，而我的源码出来后CONFIG_SAMSUNG_DEV_TS=y，还改不掉。。 vi drivers/input/touchscreen/mini6410-ts.c
增加头文件#include<linux/sched.h> 奇怪的是友善的mini6410-ts.c
里没这个头文件也能找到需要的东西。。。    Input device support --->
        [*]   Touchscreens --->
              <*>   S3C touchscreen driver for Mini6410
                <*>   Mini6410 1-Wire host and Touch Screen Driver lcd好用了，开机出现了那只小企鹅，挂NFS后触摸屏也能用了。