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📄 写自己的frame buffer device driver - ～ 悠悠风信子 ～ - csdnblog.htm

📁 S3C44B0X下的LCD （framebuffer）驱动资料与相关代码
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            width=15 border=0>&nbsp;写自己的frame buffer device driver </A></DIV>
            <DIV class=postText>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" 
            align=left><SPAN>准备开始写我们自己的驱动之前，请详细阅读如下文件：<SPAN></SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" 
            align=left><EM><SPAN>\Documentation\fb</SPAN></EM><SPAN>目录<SPAN>&nbsp;&nbsp;</SPAN></SPAN><STRONG><SPAN>vesafb.txt</SPAN></STRONG><STRONG><SPAN>，<SPAN>matroxfb.txt</SPAN>，<SPAN>sa1100fb.txt</SPAN></SPAN></STRONG><STRONG><SPAN><BR></SPAN></STRONG><EM><SPAN>\drivers\video</SPAN></EM><SPAN>目录<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN></SPAN><STRONG><SPAN>fbmem.c</SPAN></STRONG><STRONG><SPAN>，<SPAN>fbgen.c</SPAN>，<SPAN>fbmon.c</SPAN>，<SPAN>fbcmap.c</SPAN></SPAN></STRONG><STRONG><SPAN><BR></SPAN></STRONG><STRONG><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;skeletonfb.c</SPAN></STRONG><STRONG><SPAN><BR></SPAN></STRONG><STRONG><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;vesafb.c</SPAN></STRONG><STRONG><SPAN>，<SPAN>sa1100fb.c</SPAN>，<SPAN>sa1100fb.h</SPAN></SPAN></STRONG><SPAN><BR></SPAN><EM><SPAN>include\linux</SPAN></EM><SPAN>目录<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN></SPAN><STRONG><SPAN>&nbsp;fb.h</SPAN></STRONG><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" 
            align=left><SPAN>最值得关注的是</SPAN><STRONG><SPAN><FONT 
            face="Times New Roman">skeletonfb.c</FONT></SPAN></STRONG><STRONG><SPAN>，</SPAN></STRONG><SPAN>该文件给出了一个</SPAN><SPAN><FONT 
            face="Times New Roman">fb&nbsp;device&nbsp;</FONT></SPAN><SPAN>驱动的框架</SPAN><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan" 
            align=left><SPAN>准备好了，就开始写自己的</SPAN><SPAN><FONT 
            face="Times New Roman">fram&nbsp;buffer&nbsp;device&nbsp;driver</FONT></SPAN><SPAN>：）</SPAN><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>还是要补充点，下面是<SPAN>/linux/fb.h</SPAN>的部分注释，加粗的是常用的，红色是关键的，一般不可少。旁边没有汉字，要么很简单没必要加注，要么就用不到！</SPAN><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>注释：<SPAN><A 
            href="mailto:good02xaut@hotmail.com"><SPAN>good02xaut@hotmail.com</SPAN></A></SPAN></SPAN><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>#ifndef&nbsp;_LINUX_FB_H</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>#define&nbsp;_LINUX_FB_H</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN><FONT 
            face="Times New Roman"></FONT></SPAN>&nbsp;</P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>#include&nbsp;&lt;linux/tty.h&gt;</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>#include&nbsp;&lt;asm/types.h&gt;</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN><FONT 
            face="Times New Roman"></FONT></SPAN>&nbsp;</P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>/*&nbsp;Definitions&nbsp;of&nbsp;frame&nbsp;buffers<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</SPAN><SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FB_MAJOR<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>29<SPAN>&nbsp;&nbsp;</SPAN>/*</SPAN><SPAN 
            style="COLOR: red">主设备号<SPAN>*/</SPAN></SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FB_MAX<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>32<SPAN>&nbsp;&nbsp;</SPAN>/*&nbsp;sufficient&nbsp;for&nbsp;now&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN></SPAN>&nbsp;</P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN>/*&nbsp;ioctls</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN><SPAN>&nbsp;&nbsp;&nbsp;</SPAN>0x46&nbsp;is&nbsp;'F'<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_VSCREENINFO<SPAN>&nbsp;</SPAN>0x4600</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOPUT_VSCREENINFO<SPAN>&nbsp;</SPAN>0x4601</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_FSCREENINFO<SPAN>&nbsp;</SPAN>0x4602</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGETCMAP<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4604</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOPUTCMAP<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4605</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOPAN_DISPLAY<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4606</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">/*&nbsp;0x4607-0x460B&nbsp;are&nbsp;defined&nbsp;below&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">/*&nbsp;#define&nbsp;FBIOGET_MONITORSPEC<SPAN>&nbsp;&nbsp;</SPAN>0x460C&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">/*&nbsp;#define&nbsp;FBIOPUT_MONITORSPEC<SPAN>&nbsp;&nbsp;</SPAN>0x460D&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">/*&nbsp;#define&nbsp;FBIOSWITCH_MONIBIT<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>0x460E&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_CON2FBMAP<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>0x460F</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOPUT_CON2FBMAP<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>0x4610</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOBLANK<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4611<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;arg:&nbsp;0&nbsp;or&nbsp;vesa&nbsp;level&nbsp;+&nbsp;1&nbsp;*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_VBLANK<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>_IOR('F',&nbsp;0x12,&nbsp;struct&nbsp;fb_vblank)</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIO_ALLOC<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4613</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIO_FREE<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4614</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_GLYPH<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4615</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_HWCINFO<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4616</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOPUT_MODEINFO<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4617</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FBIOGET_DISPINFO<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0x4618</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN style="COLOR: red"></SPAN>&nbsp;</P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN style="COLOR: red"></SPAN>&nbsp;</P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
            align=left><SPAN 
            style="COLOR: red">#define&nbsp;FB_TYPE_PACKED_PIXELS<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Packed&nbsp;Pixels<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan"
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