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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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            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体>struct&nbsp;fb_fix_screeninfo&nbsp;{</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN 
            style="COLOR: red"><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>char&nbsp;id[16];<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;identification&nbsp;string&nbsp;eg&nbsp;"TT&nbsp;Builtin"&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN 
            style="COLOR: red"><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>unsigned&nbsp;long&nbsp;smem_start;<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Start&nbsp;of&nbsp;frame&nbsp;buffer&nbsp;mem&nbsp;显存的起始地址*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;(physical&nbsp;address)&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN 
            style="COLOR: red"><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;smem_len;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Length&nbsp;of&nbsp;frame&nbsp;buffer&nbsp;mem&nbsp;显存的大小&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN 
            style="COLOR: red"><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;type;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;see&nbsp;FB_TYPE_*<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;type_aux;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Interleave&nbsp;for&nbsp;interleaved&nbsp;Planes&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;visual;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;see&nbsp;FB_VISUAL_*<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/&nbsp;</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u16&nbsp;xpanstep;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;zero&nbsp;if&nbsp;no&nbsp;hardware&nbsp;panning<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u16&nbsp;ypanstep;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;zero&nbsp;if&nbsp;no&nbsp;hardware&nbsp;panning<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u16&nbsp;ywrapstep;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;zero&nbsp;if&nbsp;no&nbsp;hardware&nbsp;ywrap<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN 
            style="COLOR: red"><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;line_length;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;length&nbsp;of&nbsp;a&nbsp;line&nbsp;in&nbsp;bytes<SPAN>&nbsp;&nbsp;</SPAN>每行的字节数<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>unsigned&nbsp;long&nbsp;mmio_start;<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Start&nbsp;of&nbsp;Memory&nbsp;Mapped&nbsp;I/O<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;(physical&nbsp;address)&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;mmio_len;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Length&nbsp;of&nbsp;Memory&nbsp;Mapped&nbsp;I/O<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;accel;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN>&nbsp;&nbsp;</SPAN>/*&nbsp;Type&nbsp;of&nbsp;acceleration&nbsp;available&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u16&nbsp;reserved[3];<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Reserved&nbsp;for&nbsp;future&nbsp;compatibility&nbsp;*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体>};</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>/*&nbsp;Interpretation&nbsp;of&nbsp;offset&nbsp;for&nbsp;color&nbsp;fields:&nbsp;All&nbsp;offsets&nbsp;are&nbsp;from&nbsp;the&nbsp;right,</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>*&nbsp;inside&nbsp;a&nbsp;"pixel"&nbsp;value,&nbsp;which&nbsp;is&nbsp;exactly&nbsp;'bits_per_pixel'&nbsp;wide&nbsp;(means:&nbsp;you</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>*&nbsp;can&nbsp;use&nbsp;the&nbsp;offset&nbsp;as&nbsp;right&nbsp;argument&nbsp;to&nbsp;&lt;&lt;).&nbsp;A&nbsp;pixel&nbsp;afterwards&nbsp;is&nbsp;a&nbsp;bit</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>*&nbsp;stream&nbsp;and&nbsp;is&nbsp;written&nbsp;to&nbsp;video&nbsp;memory&nbsp;as&nbsp;that&nbsp;unmodified.&nbsp;This&nbsp;implies</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>*&nbsp;big-endian&nbsp;byte&nbsp;order&nbsp;if&nbsp;bits_per_pixel&nbsp;is&nbsp;greater&nbsp;than&nbsp;8.</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;</SPAN>/*像素所占字节内，各个颜色的位分配比如RGB=888,565,555等等，*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体>struct&nbsp;fb_bitfield&nbsp;{</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;offset;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;beginning&nbsp;of&nbsp;bitfield<SPAN>&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;length;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;length&nbsp;of&nbsp;bitfield<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>__u32&nbsp;msb_right;<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;!=&nbsp;0&nbsp;:&nbsp;Most&nbsp;significant&nbsp;bit&nbsp;is&nbsp;*/&nbsp;</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;right&nbsp;*/&nbsp;</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><STRONG><SPAN><FONT 
            face=宋体>};</FONT></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>/*下面的宏也不常用*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_NONSTD_HAM<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>1<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;Hold-And-Modify&nbsp;(HAM)<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_NOW<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>0<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;set&nbsp;values&nbsp;immediately&nbsp;(or&nbsp;vbl)*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_NXTOPEN<SPAN>&nbsp;</SPAN>1<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;activate&nbsp;on&nbsp;next&nbsp;open<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_TEST<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>2<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;don't&nbsp;set,&nbsp;round&nbsp;up&nbsp;impossible&nbsp;*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_MASK<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>15</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;values<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_VBL<SPAN>&nbsp;</SPAN><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>16<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;activate&nbsp;values&nbsp;on&nbsp;next&nbsp;vbl<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_CHANGE_CMAP_VBL<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>32<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;change&nbsp;colormap&nbsp;on&nbsp;vbl<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACTIVATE_ALL<SPAN>&nbsp;</SPAN><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>64<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;change&nbsp;all&nbsp;VCs&nbsp;on&nbsp;this&nbsp;fb<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_ACCELF_TEXT<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>1<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;text&nbsp;mode&nbsp;acceleration&nbsp;*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_SYNC_HOR_HIGH_ACT<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>1<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;horizontal&nbsp;sync&nbsp;high&nbsp;active<SPAN>&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_SYNC_VERT_HIGH_ACT<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>2<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;vertical&nbsp;sync&nbsp;high&nbsp;active<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_SYNC_EXT<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>4<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;external&nbsp;sync<SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_SYNC_COMP_HIGH_ACT<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>8<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>/*&nbsp;composite&nbsp;sync&nbsp;high&nbsp;active<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>*/</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face=宋体>#define&nbsp;FB_SYNC_BROADCAST<SPAN>&nbsp;&nbsp;&nbsp;</SPAN>16<SPAN>&nbsp;&nbsp;</SPAN>/*&nbsp;broadcast&nbsp;video&nbsp;timings<SPAN 
            style="m: 0 cellPadding=0 width=" border="0" 
            align="center">&nbsp;</SPAN></FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT face=宋体><SPAN 
            style="m: 0 cellPadding=0 width=" border="0" align="center"><IMG 
            alt="" 
            src="写自己的frame buffer device driver - ～ 悠悠风信子 ～ - CSDNBlog.files/2006412103532526.jpg"></SPAN></FONT></SPAN></P><SPAN><FONT 
            face=宋体><SPAN style="m: 0 cellPadding=0 width=" border="0" 
            align="center"><STRONG><SPAN><FONT face="Times New Roman">
            <P style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
            align=center><STRONG><SPAN><FONT 
            face="Times New Roman">Framebuffer</FONT></SPAN></STRONG><STRONG><SPAN>驱动程序模型</SPAN><SPAN></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
            align=center><SPAN><FONT 
            face="Times New Roman"></FONT></SPAN>&nbsp;</P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><SPAN><FONT 
            face="Times New Roman">&nbsp;&nbsp;</FONT></SPAN></SPAN><SPAN>下图会向你展示目前的</SPAN><SPAN><FONT 
            face="Times New Roman">framebuffer</FONT></SPAN><SPAN>设备驱动的结构，最常用的是非标准驱动。很明显他所处的层次最高，程序编写是最容易的。</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt"><SPAN>理解了这个图的，你已经很轻松的去完成一个</SPAN><SPAN><FONT 
            face="Times New Roman">fb</FONT></SPAN><SPAN>驱动，比如给</SPAN><SPAN><FONT 
            face="Times New Roman">sa1100,s2410,s2440</FONT></SPAN><SPAN>系列的</SPAN><SPAN><FONT 
            face="Times New Roman">ARM</FONT></SPAN><SPAN>的</SPAN><SPAN><FONT 
            face="Times New Roman">LCD</FONT></SPAN><SPAN>控制器写驱动。</SPAN></P><SPAN>
            <P style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
            align=center><STRONG><SPAN style="FONT-SIZE: 14pt"><FONT 
            face="Times New Roman">Color&nbsp;Map&nbsp;</FONT></SPAN></STRONG><STRONG><SPAN 
            style="FONT-SIZE: 14pt">剖析</SPAN></STRONG><STRONG><SPAN 
            style="FONT-SIZE: 14pt"></SPAN></STRONG></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN>在</SPAN><SPAN><FONT 
            face="Times New Roman">framebuffer</FONT></SPAN><SPAN>驱动程序设计中，</SPAN><SPAN><FONT 
            face="Times New Roman">cmap</FONT></SPAN><SPAN>这个东东太晕了。现在我要把他赤裸裸的剖析给大家：）</SPAN></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1"><FONT 
            face="Times New Roman"><STRONG><SPAN><SPAN>1．<SPAN 
            style="FONT: 7pt Times New Roman">&nbsp;</SPAN></SPAN></SPAN></STRONG><STRONG><SPAN>struct&nbsp;fb_cmap</SPAN></STRONG></FONT></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1"><FONT 
            face="Times New Roman"><STRONG><SPAN><SPAN><IMG alt="" 
            src="写自己的frame buffer device driver - ～ 悠悠风信子 ～ - CSDNBlog.files/2006412103634740.jpg"></SPAN></SPAN></STRONG></FONT></P>
            <P 
            style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1"><FONT 
            face="Times New Roman"><STRONG><SPAN><SPAN>/*<SPAN>颜色映射表</SPAN><SPAN><FONT 
            face="Times New Roman">*/</FONT></SPAN></SPAN></SPAN></STRONG></FONT></P>
            <P style="MARGIN: 0cm 0cm 0pt"><SPAN><FONT 
            face="Times New Roman">struct&nbsp;fb_cmap&nbsp;{</FONT></SPAN></P>
            <P style="MARGIN: 0cm 0cm 0pt"><S
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