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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/sdmc/sdmc-interface_design.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">接口设计</h1>
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<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 3 minute(s)
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</div>
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<div class="- topic/body concept/conbody body conbody">
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<div class="- topic/p p" data-ofbid="d184542e33__20250123155219">以下接口皆为 MMC 子系统所需要的标准接口，通过 mmc_host_ops 注册到 MMC
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子系统。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="sdmc_interface_design__codeblock_rr5_2tt_c1c" data-ofbid="sdmc_interface_design__codeblock_rr5_2tt_c1c"><code><strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> mmc_host_ops artinchip_mmc_ops = {
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.request = artinchip_mmc_request,
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.pre_req = artinchip_mmc_pre_req,
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.post_req = artinchip_mmc_post_req,
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.set_ios = artinchip_mmc_set_ios,
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.get_ro = artinchip_mmc_get_ro,
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.get_cd = artinchip_mmc_get_cd,
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.hw_reset = artinchip_mmc_hw_reset,
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.enable_sdio_irq = artinchip_mmc_enable_sdio_irq,
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.ack_sdio_irq = artinchip_mmc_ack_sdio_irq,
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.execute_tuning = artinchip_mmc_execute_tuning,
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.card_busy = artinchip_mmc_card_busy,
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.start_signal_voltage_switch = artinchip_mmc_switch_voltage,
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.init_card = artinchip_mmc_init_card,
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};</code></pre></div>
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<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_u3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_u3w_ftt_c1c" 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">artinchip_mmc_request</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead">
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<tr class="- topic/row">
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<th class="- topic/entry entry colsep-1 rowsep-1" id="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">函数原型</th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">static void artinchip_mmc_request(struct mmc_host *mmc, struct
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mmc_request *mrq)</th>
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</tr>
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</thead><tbody class="- topic/tbody tbody">
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">功能说明</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">读取当前的 RTC 时间</td>
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</tr>
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">功能说明</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">操作寄存器实现 request</td>
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</tr>
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">参数定义</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">
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<ul class="- topic/ul ul" id="sdmc_interface_design__ul_khk_jtj_bcc" data-ofbid="sdmc_interface_design__ul_khk_jtj_bcc">
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<li class="- topic/li li" data-ofbid="d184542e90__20250123155219">mmc：MMC 设备指针 </li>
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<li class="- topic/li li" data-ofbid="d184542e93__20250123155219">mrq：请求的参数和资源</li>
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</ul>
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</td>
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</tr>
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">返回值</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">-</td>
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__1">注意事项</td>
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<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_u3w_ftt_c1c__entry__2">-</td>
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</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_v3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_v3w_ftt_c1c" 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">artinchip_mmc_pre_req</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="sdmc_interface_design__table_v3w_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_v3w_ftt_c1c__entry__2">static void artinchip_mmc_pre_req(struct mmc_host *mmc, struct
|
|||
|
|
mmc_request *mrq)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__2">准备下一个 request</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_b3f_ktj_bcc" data-ofbid="sdmc_interface_design__ul_b3f_ktj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e163__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e166__20250123155219">mrq：请求的参数和资源</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_v3w_ftt_c1c__entry__2">在准备下一个请求前，一般需要调用 artinchip_mmc_post_request</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_w3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_w3w_ftt_c1c" 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">artinchip_mmc_post_req</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="sdmc_interface_design__table_w3w_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_w3w_ftt_c1c__entry__2">static void artinchip_mmc_post_req(struct mmc_host *mmc, struct
|
|||
|
|
mmc_request *mrq, int err)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__2">送出一个 request</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_yqk_ktj_bcc" data-ofbid="sdmc_interface_design__ul_yqk_ktj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e236__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e239__20250123155219">mrq：请求的参数和资源</li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e242__20250123155219">err：如果非零，需要清理掉 pre_req() 中申请的资源</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_w3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_x3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_x3w_ftt_c1c" 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"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_set_ios</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="sdmc_interface_design__table_x3w_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_x3w_ftt_c1c__entry__2">static void artinchip_mmc_set_ios(struct mmc_host *mmc, struct
|
|||
|
|
mmc_ios *ios)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__2">对设备的位宽、DDR 模式、clock、power 模式等进行配置</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_jln_ltj_bcc" data-ofbid="sdmc_interface_design__ul_jln_ltj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e312__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e315__20250123155219">ios：配置参数</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_x3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_y3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_y3w_ftt_c1c" 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"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_get_cd</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="sdmc_interface_design__table_y3w_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_y3w_ftt_c1c__entry__2">static int artinchip_mmc_get_cd(struct mmc_host *mmc)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__2">探测外部 SD 设备</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__2">mmc：MMC 设备指针</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__2">执行成功则返回 1</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_y3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_z3w_ftt_c1c" data-ofbid="sdmc_interface_design__table_z3w_ftt_c1c" 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"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_hw_reset</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="sdmc_interface_design__table_z3w_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_z3w_ftt_c1c__entry__2">static void artinchip_mmc_hw_reset(struct mmc_host *mmc)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__2">对 MMC 控制器、DMA 等进行一次 reset</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__2">mmc：MMC 设备指针</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_z3w_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_ajw_ftt_c1c" data-ofbid="sdmc_interface_design__table_ajw_ftt_c1c" 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"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_enable_sdio_irq</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="sdmc_interface_design__table_ajw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_ajw_ftt_c1c__entry__2">static void artinchip_mmc_enable_sdio_irq(struct mmc_host *mmc,
|
|||
|
|
int enb)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__2">使能或者关闭 MMC 控制器的中断</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_hm2_ptj_bcc" data-ofbid="sdmc_interface_design__ul_hm2_ptj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e514__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e517__20250123155219">enb：使能开关</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_ajw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_bjw_ftt_c1c" data-ofbid="sdmc_interface_design__table_bjw_ftt_c1c" 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"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_ack_sdio_irq</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="sdmc_interface_design__table_bjw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_bjw_ftt_c1c__entry__2">static void artinchip_mmc_ack_sdio_irq(struct mmc_host
|
|||
|
|
*mmc)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__2">打开 MMC 控制器的中断</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__2">mmc：MMC 设备指针</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_bjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_cjw_ftt_c1c" data-ofbid="sdmc_interface_design__table_cjw_ftt_c1c" 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"> 9</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_execute_tuning</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="sdmc_interface_design__table_cjw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_cjw_ftt_c1c__entry__2">static int artinchip_mmc_execute_tuning(struct mmc_host *mmc, u32
|
|||
|
|
opcode)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__2">MMC 的 tuning 功能接口</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_mhp_4tj_bcc" data-ofbid="sdmc_interface_design__ul_mhp_4tj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e651__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e654__20250123155219">opcode：tuning 命令码</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_cjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_djw_ftt_c1c" data-ofbid="sdmc_interface_design__table_djw_ftt_c1c" 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"> 10</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_card_busy</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="sdmc_interface_design__table_djw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_djw_ftt_c1c__entry__2">static int artinchip_mmc_card_busy(struct mmc_host *mmc)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__2">查看 MMC 设备是否处于 Busy 状态</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__2">mmc：MMC 设备指针</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__2">若处于 idle 状态返回 0，busy 则返回 1</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_djw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_ejw_ftt_c1c" data-ofbid="sdmc_interface_design__table_ejw_ftt_c1c" 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"> 11</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_switch_voltage</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="sdmc_interface_design__table_ejw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_ejw_ftt_c1c__entry__2">static int artinchip_mmc_switch_voltage(struct mmc_host *mmc,
|
|||
|
|
struct mmc_ios *ios)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__2">设置 MMC 设备的工作电压</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_fkn_ntj_bcc" data-ofbid="sdmc_interface_design__ul_fkn_ntj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e789__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e792__20250123155219">ios：设置参数</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__2">0，成功。 < 0，失败</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_ejw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="sdmc_interface_design__table_fjw_ftt_c1c" data-ofbid="sdmc_interface_design__table_fjw_ftt_c1c" 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"> 12</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">artinchip_mmc_init_card</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="sdmc_interface_design__table_fjw_ftt_c1c__entry__1">函数原型</th>
|
|||
|
|
<th class="- topic/entry entry colsep-0 rowsep-1" id="sdmc_interface_design__table_fjw_ftt_c1c__entry__2">static void artinchip_mmc_init_card(struct mmc_host *mmc, struct
|
|||
|
|
mmc_card *card)</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead><tbody class="- topic/tbody tbody">
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__1">功能说明</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__2">初始化外部 mmc 设备</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__1">参数定义</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__2">
|
|||
|
|
<ul class="- topic/ul ul" id="sdmc_interface_design__ul_hmy_mtj_bcc" data-ofbid="sdmc_interface_design__ul_hmy_mtj_bcc">
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e862__20250123155219">mmc：MMC 设备指针 </li>
|
|||
|
|
<li class="- topic/li li" data-ofbid="d184542e865__20250123155219">card：card 设备指针</li>
|
|||
|
|
</ul>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__1">返回值</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr class="- topic/row">
|
|||
|
|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__1">注意事项</td>
|
|||
|
|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="sdmc_interface_design__table_fjw_ftt_c1c__entry__2">-</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody></table></div>
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
</article></main></div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
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|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
<footer class="navbar navbar-default wh_footer">
|
|||
|
|
<div class=" footer-container mx-auto ">
|
|||
|
|
<title>footer def</title>
|
|||
|
|
<style><!--
|
|||
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|
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|
|
.p1 {
|
|||
|
|
font-family: FangZhengShuSong, Times, serif;
|
|||
|
|
}
|
|||
|
|
.p2 {
|
|||
|
|
font-family: Arial, Helvetica, sans-serif;
|
|||
|
|
}
|
|||
|
|
.p3 {
|
|||
|
|
font-family: "Lucida Console", "Courier New", monospace;
|
|||
|
|
}
|
|||
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|
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|
|
--></style>
|
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|
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|
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<div class="webhelp.fragment.footer">
|
|||
|
|
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
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|
|
</div><div>
|
|||
|
|
<div class="generation_time">
|
|||
|
|
Update Time: 2025-01-23
|
|||
|
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</div>
|
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|
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</div>
|
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|
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</div>
|
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|
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</footer>
|
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<button id="go2top" class="d-print-none" title="返回顶部">
|
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<span class="oxy-icon oxy-icon-up"></span>
|
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<div id="modal_img_large" class="modal">
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<span class="close oxy-icon oxy-icon-remove"></span>
|
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|
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<div id="caption"></div>
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<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
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