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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/display/display_sourcecode_and_arch_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">源码和框架说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 2 minute(s)
</div><div class="- topic/body body"><section class="- topic/section section" id="id__section_rlc_hpf_fdc" data-ofbid="id__section_rlc_hpf_fdc"><h2 class="- topic/title title sectiontitle">源码说明</h2>
<p class="- topic/p p" data-ofbid="d350282e24__20250121172127">本模块源代码的目录结构如下：</p>
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_qdc_qdk_ndc" data-ofbid="id__table_qdc_qdk_ndc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">目录 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/display</span></span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_qdc_qdk_ndc__entry__1">文件名</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_qdc_qdk_ndc__entry__2">含义</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_fb.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">显示驱动框架</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_de.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">显示引擎驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_rgb.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">RGB 显示接口驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_lvds.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">LVDS 显示接口驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_dsi.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">MIPI-DSI 显示接口驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">drv_dbi.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">MIPI-DBI 显示接口驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">disp_com.h</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">显示驱动共用的头文件，定义了共用数据结构、全局函数等</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">disp_conf.h</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">显示接口配置文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__1">disp_ccm.h</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qdc_qdk_ndc__entry__2">CCM 色彩矩阵配置文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_qdc_qdk_ndc__entry__1">disp_gamma.h</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_qdc_qdk_ndc__entry__2">Gamma 配置文件</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_rdc_qdk_ndc" data-ofbid="id__table_rdc_qdk_ndc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">目录 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/display/panel</span></span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_rdc_qdk_ndc__entry__1">文件名</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_rdc_qdk_ndc__entry__2">含义</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_com.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">LCD 屏公用代码</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_com.h</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">显示驱动共用的头文件，其中定义了共用数据结构、全局函数等</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel-simple.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">为 RGB 和 LVDS 接口提供的一款通用的 LCD 驱动</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_dsi.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">为 MIPI-DSI 屏幕封装的函数，方便屏幕适配</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_dsi.h</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">为 MIPI-DSI 屏幕封装的函数的头文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_dbi.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">为 MIPI-DBI 协议封装的函数，方便屏幕适配</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_dbi.h</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rdc_qdk_ndc__entry__2">为 MIPI-DBI 协议封装函数的头文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_rdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">panel_xxxx.c</span></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_rdc_qdk_ndc__entry__2">为屏驱 IC 适配的专用驱动</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_sdc_qdk_ndc" data-ofbid="id__table_sdc_qdk_ndc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">目录 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/display</span></span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_sdc_qdk_ndc__entry__1">文件名</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_sdc_qdk_ndc__entry__2">含义</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_hal_rgb.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__2">RGB 显示接口 HAL 层，操作 RGB 接口寄存器</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_hal_de.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__2">DE 显示引擎 HAL 层，操作 DE 接口寄存器</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_hal_dsi.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_sdc_qdk_ndc__entry__2">MIPI-DSI 显示接口 HAL 层，操作 DSI 接口寄存器</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_sdc_qdk_ndc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_hal_dbi.c</span></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_sdc_qdk_ndc__entry__2">MIPI-DBI 显示接口 HAL 层，操作 DBI 接口寄存器</td></tr></tbody></table></div>
</section><section class="- topic/section section" id="id__section_ddb_frx_ddc" data-ofbid="id__section_ddb_frx_ddc"><h2 class="- topic/title title sectiontitle">软硬件设计</h2>
<p class="- topic/p p section" id="id__p_t3d_5ck_ndc" data-ofbid="id__p_t3d_5ck_ndc">在 Chip
运行过程中，显示接口只能输出一种标准信号，其数据链路是确定的。显示接口硬件框图如下所示：</p>
<div class="- topic/p p section" data-ofbid="d350282e205__20250121172127">
<figure class="- topic/fig fig fignone" id="id__fig_ad1_1rx_ddc" data-ofbid="id__fig_ad1_1rx_ddc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_b25_sf3_bdc" src="../../../images/display/hw_framework.png" alt="/hw_framework"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">硬件框图</span></figcaption></figure>
</div>
<div class="- topic/p p" data-ofbid="d350282e215__20250121172127">在软件 SDK 中，显示引擎、显示接口与 LCD 的关系是 <em class="+ topic/ph hi-d/i ph i">1 x N x N</em>。 一个显示引擎需要支持多个显示接口标准，一个显示接口又要适配多款
LCD，其数据链路是不确定的。<figure class="- topic/fig fig fignone" id="id__fig_ods_3rx_ddc" data-ofbid="id__fig_ods_3rx_ddc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_c25_sf3_bdc" src="../../../images/display/sw_framework.png" alt="/sw_framework"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">软件框图</span></figcaption></figure></div>
</section><section class="- topic/section section" id="id__section_gbj_tsx_ddc" data-ofbid="id__section_gbj_tsx_ddc"><h2 class="- topic/title title sectiontitle">MIPI-DBI 协议</h2>
<p class="- topic/p p" data-ofbid="d350282e232__20250121172127">Mobile Industry Processor Interface - Display Bus Interface (MIPI-DBI)
是一种用于显示接口的协议，主要用于移动设备中的显示屏连接。MIPI-DBI 是软件虚拟出来的 device，为 MIPI-DBI 协议提供支持。MIPI-DBI
协议支持多种类型的数据传输方式：</p>
<ul class="- topic/ul ul simple" id="id__ul_e25_sf3_bdc" data-ofbid="id__ul_e25_sf3_bdc"><li class="- topic/li li" data-ofbid="d350282e236__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e238__20250121172127">Type A: Motorola 6800</p>
</li><li class="- topic/li li" data-ofbid="d350282e241__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e243__20250121172127">Type B: Intel 8080</p>
</li><li class="- topic/li li" data-ofbid="d350282e246__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e248__20250121172127">Type C: SPI</p>
</li></ul>
<p class="- topic/p p" data-ofbid="d350282e252__20250121172127">ArtInChip 平台支持 MIPI-DBI 协议中的 Type B 和 Type C，可以与使用这两种类型的 MIPI-DBI 接口的显示屏进行通信。</p>
</section><section class="- topic/section section" id="id__section_owd_qsx_ddc" data-ofbid="id__section_owd_qsx_ddc"><h2 class="- topic/title title sectiontitle">结构体定义</h2>
<ul class="- topic/ul ul" id="id__ul_y5w_msx_ddc" data-ofbid="id__ul_y5w_msx_ddc"><li class="- topic/li li" data-ofbid="d350282e261__20250121172127"><strong class="+ topic/ph hi-d/b ph b">struct platform_driver</strong><div class="- topic/p p" data-ofbid="d350282e264__20250121172127">DE 和 DI 在显示框架上属于同级模块，都是 DSS 的 component，使用
struct platform_driver
来表示。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_blf_krx_ddc" data-ofbid="id__codeblock_blf_krx_ddc"><strong class="hl-keyword">struct</strong> platform_driver {
<strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> *name;
<strong class="hl-keyword">int</strong> component_type;
<strong class="hl-keyword">int</strong> (*probe)(<strong class="hl-keyword">void</strong>);
<strong class="hl-keyword">void</strong> (*remove)(<strong class="hl-keyword">void</strong>);
<strong class="hl-keyword">union</strong> {
<strong class="hl-keyword">struct</strong> di_funcs *di_funcs;
<strong class="hl-keyword">struct</strong> de_funcs *de_funcs;
};
};</pre></div></li><li class="- topic/li li" data-ofbid="d350282e268__20250121172127"><strong class="+ topic/ph hi-d/b ph b">struct aic_panel</strong><div class="- topic/p p" data-ofbid="d350282e271__20250121172127">LCD panel 使用 struct aic_panel 来表示。严格来说，panel component
不算一个
driver，只是一些屏参数和回调函数的集合。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_wnd_lrx_ddc" data-ofbid="id__codeblock_wnd_lrx_ddc"><strong class="hl-keyword">struct</strong> aic_panel {
<strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> *name;
<strong class="hl-keyword">struct</strong> aic_panel_funcs *funcs;
<strong class="hl-keyword">struct</strong> aic_panel_callbacks callbacks;
<strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> display_timing *timings;
<strong class="hl-keyword">union</strong> {
<strong class="hl-keyword">struct</strong> panel_rgb *rgb;
<strong class="hl-keyword">struct</strong> panel_lvds *lvds;
<strong class="hl-keyword">struct</strong> panel_dsi *dsi;
<strong class="hl-keyword">struct</strong> panel_dbi *dbi;
};
<strong class="hl-keyword">int</strong> connector_type;
};</pre><ul class="- topic/ul ul simple" id="id__ul_g25_sf3_bdc" data-ofbid="id__ul_g25_sf3_bdc"><li class="- topic/li li" data-ofbid="d350282e276__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e278__20250121172127"><span class="+ topic/keyword pr-d/apiname keyword apiname">struct aic_panel_funcs*funcs;</span> 由 panel 提供，供 fb
调用的回调</p>
</li><li class="- topic/li li" data-ofbid="d350282e283__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e285__20250121172127"><span class="+ topic/keyword pr-d/apiname keyword apiname">struct aic_panel_callbackscallbacks;</span> 由 DE/DI
提供，供 panel 调用的回调</p>
</li><li class="- topic/li li" data-ofbid="d350282e290__20250121172127">
<p class="- topic/p p" data-ofbid="d350282e292__20250121172127">在 panel 提供的 <span class="+ topic/keyword pr-d/apiname keyword apiname">struct aic_panel_funcs</span> 中，会调用 DE/DI
提供的 <span class="+ topic/keyword pr-d/apiname keyword apiname">struct aic_panel_callbacks</span>。</p>
<p class="- topic/p p" data-ofbid="d350282e301__20250121172127"><span class="+ topic/keyword pr-d/apiname keyword apiname">callbacks</span> 的设计是为了满足 DE、DI、panel
三个硬件模块的初始化时序，包含先后顺序、延迟大小等。时序约束主要来自 panel 侧。</p>
</li></ul></div></li></ul>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#id__section_rlc_hpf_fdc" data-tocid="id__section_rlc_hpf_fdc">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_ddb_frx_ddc" data-tocid="id__section_ddb_frx_ddc">软硬件设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_gbj_tsx_ddc" data-tocid="id__section_gbj_tsx_ddc">MIPI-DBI 协议</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_owd_qsx_ddc" data-tocid="id__section_owd_qsx_ddc">结构体定义</a></div></li></ul></div>
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