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: %d\n",
  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);