S5PV210 -- HX8369 LCD 驱动

在u-boot中配置hx8369,IO模拟SPI.

#include<regs.h>
#include <common.h>
#include <asm/io.h>
#ifdef CONFIG_GZSD210_LCD
static void set_cs(int cs)
{
	int reg;
	reg = readl(GPF1DAT);
	reg &= ~(0x1 << 5);
	reg |= (cs << 5);
	writel(reg,GPF1DAT);
}

static void set_clk(int clk)
{
	int reg;
	reg = readl(GPF1DAT);
	reg &= ~(0x1 << 4);
	reg |= (clk << 4);
	writel(reg,GPF1DAT);
}

static void set_outdata(int outdata)
{
	int reg;
#if	0
	reg = readl(GPF0CON);
	reg &= ~(0xf << 20);
	reg |= (0x1<< 20);
	writel(reg,GPF0CON);
	reg = readl(GPF0DAT);
	reg &= ~(0x1 << 5);
	reg |= (outdata << 5);
	writel(reg,GPF0DAT);
#else
	reg = readl(GPF0DAT);
	reg &= ~(0x1 << 6);
	reg |= (outdata << 6);
	writel(reg,GPF0DAT);
#endif
}

static void send_data(unsigned int data)
{
	unsigned int i;
	int clk_num;
	int clk_mask;
	set_cs(0);
	udelay(10);
	set_clk(1);
	set_outdata(1);
	udelay(10);

	clk_num = 9;
	clk_mask = 0x100;
	udelay(50);

	for(i = 0; i < clk_num; ++i){
		set_clk(0);
		if(data & clk_mask){
			set_outdata(1);
		}
		else{
			set_outdata(0);
		}
		udelay(100);
		set_clk(1);
		udelay(100);
		data <<= 1;
	}
	set_outdata(1);
	set_cs(1);
}
static void hx8369_write_cmd(unsigned int cmd)
{
	unsigned int out;
	out = (cmd & 0xFF);
	send_data(out);
}

static void hx8369_write_data(unsigned int data)
{
	unsigned int out = (data & 0xFF) | 0x100;
	send_data(out);

}

static void set_hx8369(void)
{
        hx8369_write_cmd(0xB9);  // SET password 
        hx8369_write_data(0xFF);   
        hx8369_write_data(0x83);   
        hx8369_write_data(0x69);

        hx8369_write_cmd(0xB1);  //Set Power 
        hx8369_write_data(0x01);                           
        hx8369_write_data(0x00);                           
        hx8369_write_data(0x34);                           
        hx8369_write_data(0x06);                           
        hx8369_write_data(0x00);                           
        hx8369_write_data(0x11);                           
        hx8369_write_data(0x11);                           
        hx8369_write_data(0x2A);                           
        hx8369_write_data(0x32);                           
        hx8369_write_data(0x3F);                           
        hx8369_write_data(0x3F);                           
        hx8369_write_data(0x07);                           
        hx8369_write_data(0x23);                           
        hx8369_write_data(0x01);                           
        hx8369_write_data(0xE6);                           
        hx8369_write_data(0xE6);                           
        hx8369_write_data(0xE6);                           
        hx8369_write_data(0xE6);                           
        hx8369_write_data(0xE6);


        hx8369_write_cmd(0xB2);  // SET Display  480x800 
        hx8369_write_data(0x00);   
        hx8369_write_data(0x2B);   
        hx8369_write_data(0x03);   
        hx8369_write_data(0x03);   
        hx8369_write_data(0x70);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0xFF);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x03);   
        hx8369_write_data(0x03);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x01);

        hx8369_write_cmd(0xB4);  // SET Display  480x800 
        hx8369_write_data(0x00);   
        hx8369_write_data(0x0C);   
        hx8369_write_data(0xA0); 
        hx8369_write_data(0x0E);   
        hx8369_write_data(0x06);

        hx8369_write_cmd(0xB6);  // SET VCOM 
        hx8369_write_data(0x10);   
        hx8369_write_data(0x10);


        hx8369_write_cmd(0xD5);  // SET GIP
        hx8369_write_data(0x00);   
        hx8369_write_data(0x05);   
        hx8369_write_data(0x03);   
        hx8369_write_data(0x00);   
        hx8369_write_data(0x01);   
        hx8369_write_data(0x09);   
        hx8369_write_data(0x10);   
        hx8369_write_data(0x80);   
        hx8369_write_data(0x37);   
        hx8369_write_data(0x37);   
        hx8369_write_data(0x20);   
        hx8369_write_data(0x31);   
        hx8369_write_data(0x46);   
        hx8369_write_data(0x8A);   
        hx8369_write_data(0x57);   
        hx8369_write_data(0x9B);   
        hx8369_write_data(0x20);   
        hx8369_write_data(0x31);   
        hx8369_write_data(0x46);   
        hx8369_write_data(0x8A);   
        hx8369_write_data(0x57);   
        hx8369_write_data(0x9B);   
        hx8369_write_data(0x07);   
        hx8369_write_data(0x0F);   
        hx8369_write_data(0x02);   
        hx8369_write_data(0x00);

        hx8369_write_cmd(0xE0); // SET Gamma
        hx8369_write_data(0x00); 
        hx8369_write_data(0x08); 
        hx8369_write_data(0x0D); 
        hx8369_write_data(0x2D); 
        hx8369_write_data(0x34); 
        hx8369_write_data(0x3F); 
        hx8369_write_data(0x19); 
        hx8369_write_data(0x38); 
        hx8369_write_data(0x09); 
        hx8369_write_data(0x0E); 
        hx8369_write_data(0x0E); 
        hx8369_write_data(0x12); 
        hx8369_write_data(0x14); 
        hx8369_write_data(0x12); 
        hx8369_write_data(0x14); 
        hx8369_write_data(0x13); 
        hx8369_write_data(0x19); 
        hx8369_write_data(0x00); 
        hx8369_write_data(0x08); 
        hx8369_write_data(0x0D); 
        hx8369_write_data(0x2D); 
        hx8369_write_data(0x34); 
        hx8369_write_data(0x3F); 
        hx8369_write_data(0x19); 
        hx8369_write_data(0x38); 
        hx8369_write_data(0x09); 
        hx8369_write_data(0x0E); 
        hx8369_write_data(0x0E); 
        hx8369_write_data(0x12); 
        hx8369_write_data(0x14); 
        hx8369_write_data(0x12); 
        hx8369_write_data(0x14); 
        hx8369_write_data(0x13); 
        hx8369_write_data(0x19); 


	hx8369_write_cmd(0xC1); 
	hx8369_write_data(0x01); //enable DGC function 
	hx8369_write_data(0x02); //SET R-GAMMA 
	hx8369_write_data(0x08); 
	hx8369_write_data(0x12); 
	hx8369_write_data(0x1A); 
	hx8369_write_data(0x22); 
	hx8369_write_data(0x2A); 
	hx8369_write_data(0x31); 
	hx8369_write_data(0x36); 
	hx8369_write_data(0x3F); 
	hx8369_write_data(0x48); 
	hx8369_write_data(0x51); 
	hx8369_write_data(0x58); 
	hx8369_write_data(0x60); 
	hx8369_write_data(0x68); 
	hx8369_write_data(0x70); 
	hx8369_write_data(0x78); 
	hx8369_write_data(0x80); 
	hx8369_write_data(0x88); 
	hx8369_write_data(0x90); 
	hx8369_write_data(0x98); 
	hx8369_write_data(0xA0); 
	hx8369_write_data(0xA7); 
	hx8369_write_data(0xAF); 
	hx8369_write_data(0xB6); 
	hx8369_write_data(0xBE); 
	hx8369_write_data(0xC7); 
	hx8369_write_data(0xCE); 
	hx8369_write_data(0xD6); 
	hx8369_write_data(0xDE); 
	hx8369_write_data(0xE6); 
	hx8369_write_data(0xEF); 
	hx8369_write_data(0xF5); 
	hx8369_write_data(0xFB); 
	hx8369_write_data(0xFC); 
	hx8369_write_data(0xFE); 
	hx8369_write_data(0x8C); 
	hx8369_write_data(0xA4); 
	hx8369_write_data(0x19); 
	hx8369_write_data(0xEC); 
	hx8369_write_data(0x1B); 
	hx8369_write_data(0x4C); 
	hx8369_write_data(0x40);   
  
	hx8369_write_data(0x02); //SET G-Gamma 
	hx8369_write_data(0x08); 
	hx8369_write_data(0x12); 
	hx8369_write_data(0x1A); 
	hx8369_write_data(0x22); 
	hx8369_write_data(0x2A); 
	hx8369_write_data(0x31); 
	hx8369_write_data(0x36); 
	hx8369_write_data(0x3F); 
	hx8369_write_data(0x48); 
	hx8369_write_data(0x51); 
	hx8369_write_data(0x58); 
	hx8369_write_data(0x60); 
	hx8369_write_data(0x68); 
	hx8369_write_data(0x70); 
	hx8369_write_data(0x78); 
	hx8369_write_data(0x80); 
	hx8369_write_data(0x88); 
	hx8369_write_data(0x90); 
	hx8369_write_data(0x98); 
	hx8369_write_data(0xA0); 
	hx8369_write_data(0xA7); 
	hx8369_write_data(0xAF); 
	hx8369_write_data(0xB6); 
	hx8369_write_data(0xBE); 
	hx8369_write_data(0xC7); 
	hx8369_write_data(0xCE); 
	hx8369_write_data(0xD6); 
	hx8369_write_data(0xDE); 
	hx8369_write_data(0xE6); 
	hx8369_write_data(0xEF); 
	hx8369_write_data(0xF5); 
	hx8369_write_data(0xFB); 
	hx8369_write_data(0xFC); 
	hx8369_write_data(0xFE); 
	hx8369_write_data(0x8C); 
	hx8369_write_data(0xA4); 
	hx8369_write_data(0x19); 
	hx8369_write_data(0xEC); 
	hx8369_write_data(0x1B); 
	hx8369_write_data(0x4C); 
	hx8369_write_data(0x40); 
	
	hx8369_write_data(0x02); //SET B-Gamma 
	hx8369_write_data(0x08); 
	hx8369_write_data(0x12); 
	hx8369_write_data(0x1A); 
	hx8369_write_data(0x22); 
	hx8369_write_data(0x2A); 
	hx8369_write_data(0x31); 
	hx8369_write_data(0x36); 
	hx8369_write_data(0x3F); 
	hx8369_write_data(0x48); 
	hx8369_write_data(0x51); 
	hx8369_write_data(0x58); 
	hx8369_write_data(0x60); 
	hx8369_write_data(0x68); 
	hx8369_write_data(0x70); 
	hx8369_write_data(0x78); 
	hx8369_write_data(0x80); 
	hx8369_write_data(0x88); 
	hx8369_write_data(0x90); 
	hx8369_write_data(0x98); 
	hx8369_write_data(0xA0); 
	hx8369_write_data(0xA7); 
	hx8369_write_data(0xAF); 
	hx8369_write_data(0xB6); 
	hx8369_write_data(0xBE); 
	hx8369_write_data(0xC7); 
	hx8369_write_data(0xCE); 
	hx8369_write_data(0xD6); 
	hx8369_write_data(0xDE); 
	hx8369_write_data(0xE6); 
	hx8369_write_data(0xEF); 
	hx8369_write_data(0xF5); 
	hx8369_write_data(0xFB); 
	hx8369_write_data(0xFC); 
	hx8369_write_data(0xFE); 
	hx8369_write_data(0x8C); 
	hx8369_write_data(0xA4); 
	hx8369_write_data(0x19); 
	hx8369_write_data(0xEC); 
	hx8369_write_data(0x1B); 
	hx8369_write_data(0x4C); 
	hx8369_write_data(0x40); 
						

	
	hx8369_write_cmd(0x3A); 
	//24 bits
	//hx8369_write_data(0x77);
	//18 bits
	hx8369_write_data(0x66);	 
															 
	hx8369_write_cmd(0x11);	 
								
	udelay(120000); 

	hx8369_write_cmd(0x29);
}

static void lcd_reset()
{
	int reg;

	reg = readl(GPF2CON);//reset
	reg &= ~(0xf << 16);
	reg |= (0x1<< 16);
	writel(reg,GPF2CON);
	reg = readl(GPF2DAT);
	reg |= (0x1 << 4);
	writel(reg,GPF2DAT);
	//udelay(100000);
	udelay(10000);
	reg = readl(GPF2DAT);
	reg &= ~(0x1 << 4);
	writel(reg,GPF2DAT);
	//udelay(200000);
	udelay(20000);
	reg = readl(GPF2DAT);
	reg |= (0x1 << 4);
	writel(reg,GPF2DAT);
	udelay(10000);
	//set_clk(1);	//keep in stop state more than 6ms
	//set_outdata(1);
	//udelay(10000);
}
static void gpio_cfg()
{
	int reg;
	reg = readl(GPF1CON);	//cs
	reg &= ~(0xf << 20);
	reg |= (0x1<< 20);
	writel(reg,GPF1CON);

	reg = readl(GPF1CON);	//clk
	reg &= ~(0xf << 16);
	reg |= (0x1<< 16);
	writel(reg,GPF1CON);

	reg = readl(GPF0CON);	// outdata
	reg &= ~(0xf << 24);
	reg |= (0x1<< 24);
	writel(reg,GPF0CON);

	set_clk(1);	//keep in stop state more than 6ms
	set_cs(1);
	set_outdata(1);
	udelay(10000);

	reg = readl(GPF0CON);	//set 3.3v
	reg &= ~(0xf << 16);
	reg |= (0x1<< 16);
	writel(reg,GPF0CON);
	reg = readl(GPF0DAT);
	reg &= ~(0x1 << 4);
	writel(reg, GPF0DAT);
}
/*lcd config*/
void lcd_config()
{
	gpio_cfg();
	lcd_reset();
	set_hx8369();
	set_cs(1);
	set_clk(1);
	set_outdata(1);
}
#endif

内核中增加相关配置信息

#ifdef CONFIG_FB_S3C_TFT480

static struct s3cfb_lcd hx8369 = {
        .width = 480,//480,
        .height = 800,//800,
        //.p_width = 52,
        //.p_height = 86,
        .bpp = 24,
        .freq = 60,
 
        .timing = {
#if	1
                .h_fp = 32,
                .h_bp = 32,
                .h_sw = 14,
                .v_fp = 12,
                .v_fpe = 1,
                .v_bp = 12,
                .v_bpe = 1,
                .v_sw = 8,
#else
                .h_fp = 15,
                .h_bp = 4,
                .h_sw = 14,
                .v_fp = 3,
                .v_fpe = 1,
                .v_bp = 3,
                .v_bpe = 1,
                .v_sw = 2,
#endif
        },
        .polarity = {
                .rise_vclk      = 0, // video data fetch at DOTCLK falling edge
                .inv_hsync      = 1,    // low active
                .inv_vsync      = 1,    // low active
                .inv_vden       = 0,    // data is vaild when DEpin is high
        },
};

static void hx8369_cfg_gpio(struct platform_device *pdev)
{
       int i;

	for (i = 0; i < 5; i++) {
		s3c_gpio_cfgpin(S5PV210_GPF0(i), S3C_GPIO_SFN(2));
		s3c_gpio_setpull(S5PV210_GPF0(i), S3C_GPIO_PULL_NONE);
	}
	s3c_gpio_cfgpin(S5PV210_GPF0(7), S3C_GPIO_SFN(2));
	s3c_gpio_setpull(S5PV210_GPF0(7), S3C_GPIO_PULL_NONE);

	for (i = 0; i < 4; i++) {
		s3c_gpio_cfgpin(S5PV210_GPF1(i), S3C_GPIO_SFN(2));
		s3c_gpio_setpull(S5PV210_GPF1(i), S3C_GPIO_PULL_NONE);
	}
	s3c_gpio_cfgpin(S5PV210_GPF1(6), S3C_GPIO_SFN(2));
	s3c_gpio_setpull(S5PV210_GPF1(6), S3C_GPIO_PULL_NONE);
	s3c_gpio_cfgpin(S5PV210_GPF1(7), S3C_GPIO_SFN(2));
	s3c_gpio_setpull(S5PV210_GPF1(7), S3C_GPIO_PULL_NONE);

	for (i = 0; i < 4; i++) {
		s3c_gpio_cfgpin(S5PV210_GPF2(i), S3C_GPIO_SFN(2));
		s3c_gpio_setpull(S5PV210_GPF2(i), S3C_GPIO_PULL_NONE);
	}
	for (i = 5; i < 8; i++) {
		s3c_gpio_cfgpin(S5PV210_GPF2(i), S3C_GPIO_SFN(2));
		s3c_gpio_setpull(S5PV210_GPF2(i), S3C_GPIO_PULL_NONE);
	}

	for (i = 0; i < 4; i++) {
		s3c_gpio_cfgpin(S5PV210_GPF3(i), S3C_GPIO_SFN(2));
		s3c_gpio_setpull(S5PV210_GPF3(i), S3C_GPIO_PULL_NONE);
	}

	/* mDNIe SEL: why we shall write 0x2 ? */
	writel(0x2, S5P_MDNIE_SEL);

	/* drive strength to max */
	writel(0xffffffff, S5PV210_GPF0_BASE + 0xc);
	writel(0xffffffff, S5PV210_GPF1_BASE + 0xc);
	writel(0xffffffff, S5PV210_GPF2_BASE + 0xc);
	writel(0x000000ff, S5PV210_GPF3_BASE + 0xc);
}

static int hx8369_backlight_on(struct platform_device *pdev)
{
	int err;

	err = gpio_request(S5PV210_GPD0(0), "GPD0");

	if (err) {
		printk(KERN_ERR "failed to request GPD0 for "
			"lcd backlight control\n");
		return err;
	}

	gpio_direction_output(S5PV210_GPD0(0), 1);

	//s3c_gpio_cfgpin(S5PV210_GPD0(0), S5PV210_GPD_0_0_TOUT_0);

	gpio_free(S5PV210_GPD0(0));

	return 0;
}

static int hx8369_backlight_off(struct platform_device *pdev, int onoff)
{
	int err;

	err = gpio_request(S5PV210_GPD0(0), "GPD0");
	if (err) {
		printk(KERN_ERR "failed to request GPD0 for "
				"lcd backlight control\n");
		return err;
	}

	gpio_direction_output(S5PV210_GPD0(0), 0);

	gpio_free(S5PV210_GPD0(0));
	return 0;
}

static int hx8369_reset_lcd(struct platform_device *pdev)
{
/*
	int err;

	err = gpio_request(S5PV210_GPH2(4), "GPH2");
	if (err) {
		printk(KERN_ERR "failed to request GPH2 for "
				"lcd reset control\n");
		return err;
	}

	gpio_direction_output(S5PV210_GPF2(4), 1);
	mdelay(100);

	gpio_set_value(S5PV210_GPF2(4), 0);
	mdelay(10);

	gpio_set_value(S5PV210_GPF2(4), 1);
	mdelay(10);

	gpio_free(S5PV210_GPF2(4));

	return 0;
*/
}

static struct s3c_platform_fb hx8369_fb_data __initdata = {
	.hw_ver	= 0x62,
	.nr_wins = 5,
	.default_win = CONFIG_FB_S3C_DEFAULT_WINDOW,
	.swap = FB_SWAP_WORD | FB_SWAP_HWORD,

	.lcd = &hx8369,
	.cfg_gpio	= hx8369_cfg_gpio,
	.backlight_on	= hx8369_backlight_on,
	.backlight_onoff    = hx8369_backlight_off,
	.reset_lcd	= hx8369_reset_lcd,
};
#endif

转载自：http://blog.csdn.net/hclydao/article/details/7646179