系统自带 s3c2410fb.c

D:\source_code\linux-2.6.22.6\drivers\video\s3c2410fb.c

static struct platform_driver s3c2410fb_driver = {
	.probe		= s3c2410fb_probe,
	.remove		= s3c2410fb_remove,
	.suspend	= s3c2410fb_suspend,
	.resume		= s3c2410fb_resume,
	.driver		= {
		.name	= "s3c2410-lcd",
		.owner	= THIS_MODULE,
	},
};

int __devinit s3c2410fb_init(void)
{
	return platform_driver_register(&s3c2410fb_driver);
}

static void __exit s3c2410fb_cleanup(void)
{
	platform_driver_unregister(&s3c2410fb_driver);
}


module_init(s3c2410fb_init);
module_exit(s3c2410fb_cleanup);

D:\source_code\linux-2.6.22.6\arch\arm\plat-s3c24xx\devs.c

struct platform_device s3c_device_lcd = {
    .name          = "s3c2410-lcd",
    .id          = -1,
    .num_resources      = ARRAY_SIZE(s3c_lcd_resource),
    .resource      = s3c_lcd_resource,
    .dev              = {
        .dma_mask        = &s3c_device_lcd_dmamask,
        .coherent_dma_mask    = 0xffffffffUL
    }
};

EXPORT_SYMBOL(s3c_device_lcd);

D:\source_code\linux-2.6.22.6\arch\arm\mach-s3c2410\mach-smdk2410.c

MACHINE_START(SMDK2410, "SMDK2410") /* @TODO: request a new identifier and switch
				    * to SMDK2410 */
	/* Maintainer: Jonas Dietsche */
	.phys_io	= S3C2410_PA_UART,
	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
	.boot_params	= S3C2410_SDRAM_PA + 0x100,
	.map_io		= smdk2410_map_io,
	.init_irq	= s3c24xx_init_irq,
	.init_machine	= smdk2410_init,
	.timer		= &s3c24xx_timer,
MACHINE_END

static void __init smdk2410_init(void)
{
    s3c24xx_fb_set_platdata(&smdk2410_lcd_cfg); // add by www.100ask.net
	platform_add_devices(smdk2410_devices, ARRAY_SIZE(smdk2410_devices));
	smdk_machine_init();
}


static struct platform_device *smdk2410_devices[] __initdata = {
	&s3c_device_usb,
	&s3c_device_lcd,
	&s3c_device_wdt,
	&s3c_device_i2c,
	&s3c_device_iis,
    &s3c2410_device_sdi,
};

D:\source_code\linux-2.6.22.6\arch\arm\plat-s3c24xx\devs.c

struct platform_device s3c_device_lcd = {
	.name		  = "s3c2410-lcd",
	.id		  = -1,
	.num_resources	  = ARRAY_SIZE(s3c_lcd_resource),
	.resource	  = s3c_lcd_resource,
	.dev              = {
		.dma_mask		= &s3c_device_lcd_dmamask,
		.coherent_dma_mask	= 0xffffffffUL
	}
};

EXPORT_SYMBOL(s3c_device_lcd);

static struct resource s3c_lcd_resource[] = {
	[0] = {
		.start = S3C24XX_PA_LCD,
		.end   = S3C24XX_PA_LCD + S3C24XX_SZ_LCD - 1,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_LCD,
		.end   = IRQ_LCD,
		.flags = IORESOURCE_IRQ,
	}

};

匹配之后就probe

static int __init s3c2410fb_probe(struct platform_device *pdev)
    struct s3c2410fb_info *info;
	struct fb_info	   *fbinfo;
	struct s3c2410fb_hw *mregs;
	int ret;
	int irq;
	int i;
	u32 lcdcon1;

    mach_info = pdev->dev.platform_data;
    mregs = &mach_info->regs;
    irq = platform_get_irq(pdev, 0);

    fbinfo = framebuffer_alloc(sizeof(struct s3c2410fb_info), &pdev->dev);
    
    dprintk("devinit\n");

	strcpy(fbinfo->fix.id, driver_name);
    memcpy(&info->regs, &mach_info->regs, sizeof(info->regs));

    /* Stop the video and unset ENVID if set */
	info->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID;
	lcdcon1 = readl(S3C2410_LCDCON1);
	writel(lcdcon1 & ~S3C2410_LCDCON1_ENVID, S3C2410_LCDCON1);

	// add by [email protected], for eBlocks
	s3c2410_gpio_setpin(S3C2410_GPB0, 0);	// back light control

    info->mach_info		    = pdev->dev.platform_data;

    fbinfo->fix.type	    = FB_TYPE_PACKED_PIXELS;
	fbinfo->fix.type_aux	    = 0;
	fbinfo->fix.xpanstep	    = 0;
	fbinfo->fix.ypanstep	    = 0;
	fbinfo->fix.ywrapstep	    = 0;
	fbinfo->fix.accel	    = FB_ACCEL_NONE;

	fbinfo->var.nonstd	    = 0;
	fbinfo->var.activate	    = FB_ACTIVATE_NOW;
	fbinfo->var.height	    = mach_info->height;
	fbinfo->var.width	    = mach_info->width;
	fbinfo->var.accel_flags     = 0;
	fbinfo->var.vmode	    = FB_VMODE_NONINTERLACED;

	fbinfo->fbops		    = &s3c2410fb_ops;
	fbinfo->flags		    = FBINFO_FLAG_DEFAULT;
	fbinfo->pseudo_palette      = &info->pseudo_pal;

	fbinfo->var.xres	    = mach_info->xres.defval;
	fbinfo->var.xres_virtual    = mach_info->xres.defval;
	fbinfo->var.yres	    = mach_info->yres.defval;
	fbinfo->var.yres_virtual    = mach_info->yres.defval;
	fbinfo->var.bits_per_pixel  = mach_info->bpp.defval;

	fbinfo->var.upper_margin    = S3C2410_LCDCON2_GET_VBPD(mregs->lcdcon2) + 1;
	fbinfo->var.lower_margin    = S3C2410_LCDCON2_GET_VFPD(mregs->lcdcon2) + 1;
	fbinfo->var.vsync_len	    = S3C2410_LCDCON2_GET_VSPW(mregs->lcdcon2) + 1;

	fbinfo->var.left_margin	    = S3C2410_LCDCON3_GET_HFPD(mregs->lcdcon3) + 1;
	fbinfo->var.right_margin    = S3C2410_LCDCON3_GET_HBPD(mregs->lcdcon3) + 1;
	fbinfo->var.hsync_len	    = S3C2410_LCDCON4_GET_HSPW(mregs->lcdcon4) + 1;

	fbinfo->var.red.offset      = 11;
	fbinfo->var.green.offset    = 5;
	fbinfo->var.blue.offset     = 0;
	fbinfo->var.transp.offset   = 0;
	fbinfo->var.red.length      = 5;
	fbinfo->var.green.length    = 6;
	fbinfo->var.blue.length     = 5;
	fbinfo->var.transp.length   = 0;
	fbinfo->fix.smem_len        =	mach_info->xres.max *
					mach_info->yres.max *
					mach_info->bpp.max / 8;

    
    for (i = 0; i < 256; i++)
		info->palette_buffer[i] = PALETTE_BUFF_CLEAR;

	if (!request_mem_region((unsigned long)S3C24XX_VA_LCD, SZ_1M, "s3c2410-lcd")) {
		ret = -EBUSY;
		goto dealloc_fb;
	}


	dprintk("got LCD region\n");


    ret = request_irq(irq, s3c2410fb_irq, IRQF_DISABLED, pdev->name, info);


    info->clk = clk_get(NULL, "lcd");
    clk_enable(info->clk);

    /* Initialize video memory */
	ret = s3c2410fb_map_video_memory(info);


    ret = s3c2410fb_init_registers(info);   //硬件操作

	ret = s3c2410fb_check_var(&fbinfo->var, fbinfo);

	ret = register_framebuffer(fbinfo);

fbinfo->fbops = &s3c2410fb_ops;

static struct fb_ops s3c2410fb_ops = {
	.owner		= THIS_MODULE,
	.fb_check_var	= s3c2410fb_check_var,
	.fb_set_par	= s3c2410fb_set_par,
	.fb_blank	= s3c2410fb_blank,
	.fb_setcolreg	= s3c2410fb_setcolreg,
	.fb_fillrect	= cfb_fillrect,
	.fb_copyarea	= cfb_copyarea,
	.fb_imageblit	= cfb_imageblit,
};

D:\source_code\linux-2.6.22.6\arch\arm\plat-s3c24xx\clock.c

https://www.cnblogs.com/sammei/archive/2012/10/15/3295612.html

系统自带 s3c2410fb.c

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