wince的LCD驱动

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wince的LCD驱动

目标：在5.0BSP中加入对800x480分辨率的支持。在 WIN CE 4.2中修改LCD驱动程序有五个相关文件,分别是：
1.    …\WINCE420\PLATFORM\SMDK2410\INC\s2410.h
2.    …\WINCE420\PLATFORM\SMDK2410\KERNEL\HAL\cfw.c
3.    …\WINCE420\PLATFORM\SMDK2410\DRIVERS\DISPLAY\S2410LCD\s2410disp.cpp
4.    …\WINCE420\PLATFORM\SMDK2410\FILES\config.bib
5.    …\ WINCE420\PLATFORM\SMDK2410\FILES\platform.reg

注：蓝色字体为加入或修改的http://hi.baidu.com/luv_resplendent/blog/item/39ad08ecf3dd912263d09f23.html

1. s2440.h

http://hi.baidu.com/mikenoodle/blog/item/a9d1a30fcdd187eaab6457d4.html
// Make sure this matches entry in config.bib
// These buffs are now offset via a constant
#define DMA_BUFFER_BASE 0xAC000000
#define DMA_PHYSICAL_BASE 0x30000000 // S3C2440X01

#define AUDIO_DMA_BUFFER_BASE (DMA_BUFFER_BASE + 0x00002000)
#define AUDIO_DMA_BUFFER_PHYS (DMA_PHYSICAL_BASE + 0x00002000)

#define SDI_DMA_BUFFER_BASE (DMA_BUFFER_BASE + 0x00028000)
#define SDI_DMA_BUFFER_PHYS (DMA_PHYSICAL_BASE + 0x00028000)

#define FRAMEBUF_BASE (DMA_BUFFER_BASE + 0x00100000)
#define FRAMEBUF_DMA_BASE (DMA_PHYSICAL_BASE + 0x00100000)

// Define LCD type of S3C2400X01
#define STN8BPP     1
#define TFT16BPP    2
#define LCDTYPE     TFT16BPP   // define LCD type as upper definition.

#define TFT240_320    1
#define TFT640_480    4
#define TFT480_272    8
#define TFT800_480    16   //这里要定义一个宏

//#define LCD_TYPE    TFT480_272
//#define LCD_TYPE    TFT240_320
//#define LCD_TYPE    TFT640_480
#define LCD_TYPE    TFT800_480

#if (LCD_TYPE == TFT640_480)
#define LCD_XSIZE_TFT    (640)
#define LCD_YSIZE_TFT    (480)
#elif (LCD_TYPE == TFT240_320)
#define LCD_XSIZE_TFT    (240)
#define LCD_YSIZE_TFT    (320)
#elif (LCD_TYPE == TFT480_272)
#define LCD_XSIZE_TFT    (480)
#define LCD_YSIZE_TFT    (272)
#elif (LCD_TYPE == TFT800_480)
#define LCD_XSIZE_TFT    (800)
#define LCD_YSIZE_TFT    (480)
#endif

#if (LCD_TYPE == TFT640_480)
#define SCR_XSIZE_TFT    (LCD_XSIZE_TFT*2)
#define SCR_YSIZE_TFT    (LCD_YSIZE_TFT*2)
#elif (LCD_TYPE == TFT240_320)
#define SCR_XSIZE_TFT    (640)   //for virtual screen
#define SCR_YSIZE_TFT    (480)
#elif (LCD_TYPE == TFT480_272)
#define SCR_XSIZE_TFT    (LCD_XSIZE_TFT)   //for virtual screen
#define SCR_YSIZE_TFT    (LCD_YSIZE_TFT)
#elif (LCD_TYPE == TFT800_480)
#define SCR_XSIZE_TFT    (LCD_XSIZE_TFT*2)   //for virtual screen
#define SCR_YSIZE_TFT    (LCD_YSIZE_TFT*2)
#endif

#if (LCD_TYPE == TFT640_480)
#define HOZVAL_TFT     (LCD_XSIZE_TFT-1)
#define LINEVAL_TFT     (LCD_YSIZE_TFT-1)
#elif (LCD_TYPE == TFT240_320)
#define HOZVAL_TFT     (LCD_XSIZE_TFT-1)
#define LINEVAL_TFT     (LCD_YSIZE_TFT-1)
#elif (LCD_TYPE == TFT480_272)
#define HOZVAL_TFT     (LCD_XSIZE_TFT-1)
#define LINEVAL_TFT     (LCD_YSIZE_TFT-1)
#elif (LCD_TYPE == TFT800_480)
#define HOZVAL_TFT     (LCD_XSIZE_TFT-1)
#define LINEVAL_TFT     (LCD_YSIZE_TFT-1)
#endif

...这里省略了部分代码
#elif (LCD_TYPE == TFT800_480)

#define MVAL      (13)
#define MVAL_USED     (0) //wujiarui

#define VBPD                ((3)&0xff)
#define VFPD                ((43-1)&0xff)
#define VSPW                ((4-1) &0x3f)
#define HBPD                ((48)&0x7f)
#define HFPD                ((16)&0xff)
#define HSPW                ((128)&0xff)

#endif

#define CLKVAL_TFT (6)

2. config.bib

CAMERA    8c088000 00140000 RESERVED
; DISPLAY    8c100000 00100000 RESERVED
; DISPLAY    8c1d0000 00030000 RESERVED
   DISPLAY    8c100000 00100000 RESERVED ;注意，这的要和reg和s3c2440disp.cpp中的一致

3. platform.reg

[HKEY_LOCAL_MACHINE\Drivers\Display\S3C2440\CONFIG]
"DisplayDll"="s3c2440disp.dll"
"LCDVirtualFrameBase"=dword:ac100000
"LCDPhysicalFrameBase"=dword:30100000

4. s3c2440disp.cpp

#include "precomp.h"
#ifdef CLEARTYPE
#include <ctblt.h>
#endif
#include <aablt.h>

#define TFT800_480 16
#define TFT240_320 1
#define TFT640_480 4
#define LCD_TYPE TFT800_480

#if (LCD_TYPE == TFT640_480)
WORD TempBuffer[641][480];
#elif (LCD_TYPE == TFT240_320)
WORD TempBuffer[241][320];
#elif (LCD_TYPE == TFT800_480)
WORD TempBuffer[801][320];
#endif

#if (LCD_TYPE == TFT640_480)
m_nScreenWidth = 640;
m_nScreenHeight = 480;
#elif (LCD_TYPE == TFT240_320)
m_nScreenWidth = 240;
m_nScreenHeight = 320;
#elif (LCD_TYPE == TFT800_480)
m_nScreenWidth = 800;
m_nScreenHeight = 480;
RETAILMSG(1,(TEXT("Display mode 800*480.\r\n")));
#endif

}
#elif (LCD_TYPE == TFT240_320)
m_VirtualFrameBuffer = (DWORD)VirtualAlloc(0, (0x30000), MEM_RESERVE, PAGE_NOACCESS);
if (m_VirtualFrameBuffer == NULL)
{
     RETAILMSG(0,(TEXT("m_VirtualFrameBuffer is not allocated\n\r")));
   return;
}
else if (!VirtualCopy((PVOID)m_VirtualFrameBuffer, (PVOID)gdwLCDVirtualFrameBase, (0x30000), PAGE_READWRITE | PAGE_NOCACHE))
{
     RETAILMSG(0, (TEXT("m_VirtualFrameBuffer is not mapped\n\r")));
    VirtualFree((PVOID)m_VirtualFrameBuffer, 0, MEM_RELEASE);
    return;
}
#elif (LCD_TYPE == TFT800_480)
m_VirtualFrameBuffer = (DWORD)VirtualAlloc(0, (0x100000), MEM_RESERVE, PAGE_NOACCESS);
if (m_VirtualFrameBuffer == NULL)
{
     RETAILMSG(0,(TEXT("m_VirtualFrameBuffer is not allocated\n\r")));
   return;
}
else if (!VirtualCopy((PVOID)m_VirtualFrameBuffer, (PVOID)gdwLCDVirtualFrameBase, (0x100000), PAGE_READWRITE | PAGE_NOCACHE))
{
     RETAILMSG(0, (TEXT("m_VirtualFrameBuffer is not mapped\n\r")));
    VirtualFree((PVOID)m_VirtualFrameBuffer, 0, MEM_RELEASE);
    return;
}
#endif

#elif (LCD_TYPE == TFT240_320)
for (index = 0; index < 320*240; index++)
{
   if(index < 3200)
   {
    ptr[index] = 0xf800;
   }
   else if(index < 6400)
   {
    ptr[index] = 0x07e0;
   }
   else if(index < 9600)
   {
    ptr[index] = 0x001f;
   }
   else
   {
    ptr[index] = 0xffff;
   }
}
#elif (LCD_TYPE == TFT800_480)
for (index = 0; index < 800*480; index++)
{
   if(index < 800*120)
   {
    ptr[index] = 0xf800;
   }
   else if(index < 800*120*2)
   {
    ptr[index] = 0x07e0;
   }
   else if(index < 800*120*3)
   {
    ptr[index] = 0x001f;
   }
   else
   {
    ptr[index] = 0xffff;
   }
}
#endif

5. cfw.c

修改

static void InitDisplay()

为

static void InitDisplay()

{

int i, j;
volatile IOPreg *s2440IOP;
volatile LCDreg *s2440LCD;

s2440IOP = (IOPreg *)IOP_BASE;
s2440LCD = (LCDreg *)LCD_BASE;

// LCD port initialize.
s2440IOP->rGPCUP = 0xFFFFFFFF;
s2440IOP->rGPCCON = 0xAAAAAAAA; //GPC0 ouput

s2440IOP->rGPDUP = 0xFFFFFFFF;
s2440IOP->rGPDCON = 0xAAAAAAAA;

s2440IOP->rGPGUP=s2440IOP->rGPGUP&(~(1<<4))|(1<<4); // Pull-up disable
s2440IOP->rGPGCON=s2440IOP->rGPGCON&(~(3<<8))|(3<<8); //GPG4=LCD_PWREN

s2440LCD->rLCDCON1   = (1          << 8) |   /* VCLK = HCLK / ((CLKVAL + 1) * 2) -> About 7 Mhz */ // ;;; SHL
     (MVAL_USED   << 7) |   /* 0 : Each Frame                                   */
     (3           << 5) |   /* TFT LCD Pannel                                   */
     (12          << 1) |   /* 16bpp Mode                                       */
     (0           << 0) ;   /* Disable LCD Output                               */

s2440LCD->rLCDCON2   = (VBPD        << 24) |   /* VBPD          :   1                              */
     (LINEVAL_TFT << 14) |   /* Virtical Size : 320 - 1                          */
     (VFPD        << 6) |   /* VFPD          :   2                              */
     (VSPW        << 0) ;   /* VSPW          :   1                              */

s2440LCD->rLCDCON3   = (HBPD        << 19) |   /* HBPD          :   6                              */
     (HOZVAL_TFT << 8) |   /* HOZVAL_TFT    : 240 - 1                          */
     (HFPD        << 0) ;   /* HFPD          :   2                              */

s2440LCD->rLCDCON4 = (MVAL << 8) | /* MVAL : 13 */
(HSPW << 0) ; /* HSPW : 4 */

s2440LCD->rLCDCON5   = (0           << 12) |   /* BPP24BL       : LSB valid                        */
     (1           << 11) |   /* FRM565 MODE   : 5:6:5 Format                     */
     (0           << 10) |   /* INVVCLK       : VCLK Falling Edge                */
     (1           << 9) |   /* INVVLINE      : Inverted Polarity                */
     (1           << 8) |   /* INVVFRAME     : Inverted Polarity                */
     (0           << 7) |   /* INVVD         : Normal                           */
     (0           << 6) |   /* INVVDEN       : Normal                           */
     (0           << 5) |   /* INVPWREN      : Normal                           */
     (0           << 4) |   /* INVENDLINE    : Normal                           */
     (1           << 3) |   /* PWREN         : Disable PWREN                    */
     (0           << 2) |   /* ENLEND        : Disable LEND signal              */
     (0           << 1) |   /* BSWP          : Swap Disable                     */
     (1           << 0) ;   /* HWSWP         : Swap Enable                      */

s2440LCD->rLCDSADDR1 = ((FRAMEBUF_DMA_BASE >> 22) << 21) |
((M5D(FRAMEBUF_DMA_BASE >> 1)) << 0);

s2440LCD->rLCDSADDR2 = M5D((FRAMEBUF_DMA_BASE + (LCD_XSIZE_TFT * LCD_YSIZE_TFT * 2)) >> 1);

s2440LCD->rLCDSADDR3 = (((LCD_XSIZE_TFT - LCD_XSIZE_TFT) / 1) << 11) | (LCD_XSIZE_TFT / 1);

s2440LCD->rTCONSEL &= ~(0x7); // ;;; SHL
s2440LCD->rLCDINTMSK |= (3);
s2440LCD->rTPAL = 0x0;
//s2440LCD->rLCDCON1 &= 0xfffe;
s2440LCD->rLCDCON1 |= 0x1;
RETAILMSG(1,(TEXT("LCD OUTPUT MODE 800*480.\r\n")));

}

做上述改动后就支持800x480的分辨率了

在使用时发现5V/1A的电源功率不足，导致程序工作不正常

后改用5V/6A的电源就好了

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