详解linux lcd驱动编写

  drivers/video

  # SPDX-License-Identifier: GPL-2.0  obj-$(CONFIG_VGASTATE)      += vgastate.o  obj-$(CONFIG_HDMI)        += hdmi.o    obj-$(CONFIG_VT)  += console/  obj-$(CONFIG_FB_STI)  += console/  obj-$(CONFIG_LOGO)  += logo/  obj-y   += backlight/    obj-y   += fbdev/    obj-$(CONFIG_VIDEOMODE_HELPERS) += display_timing.o videomode.o  ifeq ($(CONFIG_OF),y)  obj-$(CONFIG_VIDEOMODE_HELPERS) += of_display_timing.o of_videomode.o  endif  

  config FB_S3C2410   tristate "S3C2410 LCD framebuffer support"   depends on FB && ARCH_S3C24XX   select FB_CFB_FILLRECT   select FB_CFB_COPYAREA   select FB_CFB_IMAGEBLIT   ---help---    Frame buffer driver for the built-in LCD controller in the Samsung    S3C2410 processor.      This driver is also available as a module ( = code which can be    inserted and removed from the running kernel whenever you want). The    module will be called s3c2410fb. If you want to compile it as a module,    say M here and read <file:Documentation/kbuild/modules.txt>.      If unsure, say N.  config FB_S3C2410_DEBUG   bool "S3C2410 lcd debug messages"   depends on FB_S3C2410   help    Turn on debugging messages. Note that you can set/unset at run time    through sysfs  

  obj-y  += core/    obj-$(CONFIG_FB_S3C2410)  += s3c2410fb.o  

  static struct platform_driver s3c2410fb_driver = {   .probe = s3c2410fb_probe,   .remove = s3c2410fb_remove,   .suspend = s3c2410fb_suspend,   .resume = s3c2410fb_resume,   .driver = {   .name = "s3c2410-lcd",   },  };    static struct platform_driver s3c2412fb_driver = {   .probe = s3c2412fb_probe,   .remove = s3c2410fb_remove,   .suspend = s3c2410fb_suspend,   .resume = s3c2410fb_resume,   .driver = {   .name = "s3c2412-lcd",   },  };    int __init s3c2410fb_init(void)  {   int ret = platform_driver_register(&s3c2410fb_driver);     if (ret == 0)   ret = platform_driver_register(&s3c2412fb_driver);     return ret;  }  

  ret = register_framebuffer(fbinfo);   if (ret < 0) {   dev_err(&pdev->dev, "Failed to register framebuffer device: %dn",    ret);   goto free_cpufreq;   }

  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,  };  

  ret = request_irq(irq, s3c2410fb_irq, 0, pdev->name, info);