LCDCON1 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /* [17 : 8] :clkval,VCLK = HCLK / [(CLKVAL+1) x 2] * 9 = 100M/ [(CLKVAL+1) x 2] ,clkval = 4.5 = 5 * clkval = 100/vclk/2-1 * [6 : 5]:0b11,TFT lcd * [4:1]: bpp mode *
if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) 109. return -EINVAL; 110. if (!registered_fb[con2fb.framebuffer]) 111. "fb%d", con2fb.framebuffer); 112. if (!registered_fb[con2fb.framebuffer]) { 113. ret = -EINVAL; 114. break; 115. } 116. event.data = ...
fbi->regs.lcdcon5); /*设置寄存器前先把LCD使能关闭,然后将刚才设置的值写入真正的寄存器*/ writel(fbi->regs.lcdcon1 & ~S3C2410_LCDCON1_ENVID, regs + S3C2410_LCDCON1); writel(fbi->regs.lcdcon2, regs + S3C2410_LCDCON2); writel(fbi->regs.lcdcon3, regs + S3C2410_...
对于不同的设备,驱动层的代码将有所不同。 接下来的内容中,首先给出framerbuffer使用的数据结构;随后简单描述framerbuffer核心层;最后,针对S3C2440,对驱动代码进行分析。 2. 数据结构 2.1 fb_info 结构 该结构是内核用于描述一个特定framebuffer设备。其中包含了几个重要的结构,将在下面介绍。 下列代码位于include/l...
.gpdcon = 0xaa95aaa1, //GPD端口设置 .gpdcon_mask = 0xffc0fff0, .gpdup = 0x0000faff, .gpdup_mask = 0xffffffff, .lpcsel = 0xf82, }; 继续看 static struct s3c2410fb_display mini2440_lcd_cfg __initdata = { #if !defined (LCD_CON5) ...
LCDCON3:功能类似LCDCON2,只是用于垂直方向的一些参数。 LCDCON5:用于查询和设置一些状态信息。 编程步骤: 1、打开LCD背光 将LCD背光对应的GPIO设置为禁止上拉(GPxUP相应位写入1),选择output类型(GPxCON相应位写入01),输出为高电平(GPxDAT相应位写入1)。
Thanks! Since framebuffer-con1-enable is set to Enable (<01000000>), the screen display looks like there is not enough VRAM. Try setting framebuffer-con1-enable to Disable(<00000000>). Thanks to you, my problem was solved, thank you very much.saimon...
Enable textreading mode. This has the effect that fim will display images scaled to the width of the screen, and aligned to the top. If the images you are watching are text pages, all you have to do to get the next piece of text is to press space (in the default key configuration,...
开发环境 * 主 机:VMWare--Fedora 9 * 开发板:Mini2440--64MB Nand, Kernel:2.6.30.4 * 编译器:arm-linux-gcc-4.3.2上接:S3C2440上LCD驱动(FrameBuffer)实例开发详解(一)四、帧缓冲(FrameBuff
开发板:Mini2440--64MB Nand, Kernel:2.6.30.4 编译器:arm-linux-gcc-4.3.2 上接:S3C2440上LCD驱动(FrameBuffer)实例开发详解(一) 四、帧缓冲(FrameBuffer)设备驱动实例代码: ①、建立驱动文件:my2440_lcd.c,依就是驱动程序的最基本结构:FrameBuffer驱动的初始化和卸载部分及其他,如下: ...