linux3.4.2内核移植详解（七）：LCD驱动移植

基于韦东山提供的LCD驱动代码，进行修改，主要是五个寄存器：LCDCON1、LCDCON2、LCDCON3、LCDCON4、LCDCON5：

我的显示屏分别率是480x272，对照LCD_4.3手册设置那五个寄存器的值，还要注意显存的物理基地址也要改：

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/wait.h>
#include <linux/platform_device.h>
#include <linux/clk.h>

#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/div64.h>

#include <asm/mach/map.h>
//#include <asm/arch/regs-lcd.h>
//#include <asm/arch/regs-gpio.h>
//#include <asm/arch/fb.h>

static int s3c_lcdfb_setcolreg(unsigned int regno, unsigned int red,
			     unsigned int green, unsigned int blue,
			     unsigned int transp, struct fb_info *info);


struct lcd_regs {
	unsigned long	lcdcon1;
	unsigned long	lcdcon2;
	unsigned long	lcdcon3;
	unsigned long	lcdcon4;
	unsigned long	lcdcon5;
    unsigned long	lcdsaddr1;
    unsigned long	lcdsaddr2;
    unsigned long	lcdsaddr3;
    unsigned long	redlut;
    unsigned long	greenlut;
    unsigned long	bluelut;
    unsigned long	reserved[9];
    unsigned long	dithmode;
    unsigned long	tpal;
    unsigned long	lcdintpnd;
    unsigned long	lcdsrcpnd;
    unsigned long	lcdintmsk;
    unsigned long	lpcsel;
};

static struct fb_ops s3c_lcdfb_ops = {
	.owner		= THIS_MODULE,
	.fb_setcolreg	= s3c_lcdfb_s