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YEN SIGN h]h¥}hj8sbah}(h]h ]h"]yenah$]h&]uh1hhhhKRhhhhubhsection)}(hhh](htitle)}(h1Amlogic C3 Image Signal Processing (C3ISP) driverh]h1Amlogic C3 Image Signal Processing (C3ISP) driver}(hjNhhhNhNubah}(h]h ]h"]h$]h&]uh1jLhjIhhhhhKubjH)}(hhh](jM)}(h Introductionh]h Introduction}(hj_hhhNhNubah}(h]h ]h"]h$]h&]uh1jLhj\hhhhhK ubh paragraph)}(haThis file documents the Amlogic C3ISP driver located under drivers/media/platform/amlogic/c3/isp.h]haThis file documents the Amlogic C3ISP driver located under drivers/media/platform/amlogic/c3/isp.}(hjohhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhK hj\hhubjn)}(hVThe current version of the driver supports the C3ISP found on Amlogic C308L processor.h]hVThe current version of the driver supports the C3ISP found on Amlogic C308L processor.}(hj}hhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhj\hhubjn)}(hThe driver implements V4L2, Media controller and V4L2 subdev interfaces. Camera sensor using V4L2 subdev interface in the kernel is supported.h]hThe driver implements V4L2, Media controller and V4L2 subdev interfaces. Camera sensor using V4L2 subdev interface in the kernel is supported.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhj\hhubjn)}(h:The driver has been tested on AW419-C308L-Socket platform.h]h:The driver has been tested on AW419-C308L-Socket platform.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhj\hhubeh}(h] introductionah ]h"] introductionah$]h&]uh1jGhjIhhhhhK ubjH)}(hhh](jM)}(hAmlogic C3 ISPh]hAmlogic C3 ISP}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jLhjhhhhhKubjn)}(hVThe Camera hardware found on C308L processors and supported by the driver consists of:h]hVThe Camera hardware found on C308L processors and supported by the driver consists of:}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhjhhubh bullet_list)}(hhh](h list_item)}(h~1 MIPI-CSI-2 module: handles the physical layer of the MIPI CSI-2 receiver and receives data from the connected camera sensor.h]jn)}(h~1 MIPI-CSI-2 module: handles the physical layer of the MIPI CSI-2 receiver and receives data from the connected camera sensor.h]h~1 MIPI-CSI-2 module: handles the physical layer of the MIPI CSI-2 receiver and receives data from the connected camera sensor.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhjubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubj)}(hd1 MIPI-ADAPTER module: organizes MIPI data to meet ISP input requirements and send MIPI data to ISP.h]jn)}(hd1 MIPI-ADAPTER module: organizes MIPI data to meet ISP input requirements and send MIPI data to ISP.h]hd1 MIPI-ADAPTER module: organizes MIPI data to meet ISP input requirements and send MIPI data to ISP.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKhjubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubj)}(h1 ISP (Image Signal Processing) module: contains a pipeline of image processing hardware blocks. The ISP pipeline contains three resizers at the end each of them connected to a DMA interface which writes the output data to memory. h]jn)}(h1 ISP (Image Signal Processing) module: contains a pipeline of image processing hardware blocks. The ISP pipeline contains three resizers at the end each of them connected to a DMA interface which writes the output data to memory.h]h1 ISP (Image Signal Processing) module: contains a pipeline of image processing hardware blocks. The ISP pipeline contains three resizers at the end each of them connected to a DMA interface which writes the output data to memory.}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhK!hjubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubeh}(h]h ]h"]h$]h&]bullet-uh1jhhhKhjhhubjn)}(h@A high-level functional view of the C3 ISP is presented below.::h]h?A high-level functional view of the C3 ISP is presented below.:}(hj%hhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhK%hjhhubh literal_block)}(hX2 +----------+ +-------+ | Resizer |--->| WRMIF | +---------+ +------------+ +--------------+ +-------+ |----------+ +-------+ | Sensor |--->| MIPI CSI-2 |--->| MIPI ADAPTER |--->| ISP |---|----------+ +-------+ +---------+ +------------+ +--------------+ +-------+ | Resizer |--->| WRMIF | +----------+ +-------+ |----------+ +-------+ | Resizer |--->| WRMIF | +----------+ +-------+h]hX2 +----------+ +-------+ | Resizer |--->| WRMIF | +---------+ +------------+ +--------------+ +-------+ |----------+ +-------+ | Sensor |--->| MIPI CSI-2 |--->| MIPI ADAPTER |--->| ISP |---|----------+ +-------+ +---------+ +------------+ +--------------+ +-------+ | Resizer |--->| WRMIF | +----------+ +-------+ |----------+ +-------+ | Resizer |--->| WRMIF | +----------+ +-------+}hj5sbah}(h]h ]h"]h$]h&]hhuh1j3hhhK'hjhhubeh}(h]amlogic-c3-ispah ]h"]amlogic c3 ispah$]h&]uh1jGhjIhhhhhKubjH)}(hhh](jM)}(hDriver architecture and designh]hDriver architecture and design}(hjNhhhNhNubah}(h]h ]h"]h$]h&]uh1jLhjKhhhhhK2ubjn)}(hWith the goal to model the hardware links between the modules and to expose a clean, logical and usable interface, the driver registers the following V4L2 sub-devices:h]hWith the goal to model the hardware links between the modules and to expose a clean, logical and usable interface, the driver registers the following V4L2 sub-devices:}(hj\hhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhK4hjKhhubj)}(hhh](j)}(h51 `c3-mipi-csi2` sub-device - the MIPI CSI-2 receiverh]jn)}(hjoh](h1 }(hjqhhhNhNubhtitle_reference)}(h`c3-mipi-csi2`h]h c3-mipi-csi2}(hjzhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjqubh% sub-device - the MIPI CSI-2 receiver}(hjqhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK8hjmubah}(h]h ]h"]h$]h&]uh1jhjjhhhhhNubj)}(h11 `c3-mipi-adapter` sub-device - the MIPI adapterh]jn)}(hjh](h1 }(hjhhhNhNubjy)}(h`c3-mipi-adapter`h]hc3-mipi-adapter}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh sub-device - the MIPI adapter}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK9hjubah}(h]h ]h"]h$]h&]uh1jhjjhhhhhNubj)}(h)1 `c3-isp-core` sub-device - the ISP coreh]jn)}(hjh](h1 }(hjhhhNhNubjy)}(h `c3-isp-core`h]h c3-isp-core}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh sub-device - the ISP core}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK:hjubah}(h]h ]h"]h$]h&]uh1jhjjhhhhhNubj)}(h23 `c3-isp-resizer` sub-devices - the ISP resizers h]jn)}(h13 `c3-isp-resizer` sub-devices - the ISP resizersh](h3 }(hjhhhNhNubjy)}(h`c3-isp-resizer`h]hc3-isp-resizer}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh sub-devices - the ISP resizers}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK;hjubah}(h]h ]h"]h$]h&]uh1jhjjhhhhhNubeh}(h]h ]h"]h$]h&]j#j$uh1jhhhK8hjKhhubjn)}(hqThe `c3-isp-core` sub-device is linked to 2 video device nodes for statistics capture and parameters programming:h](hThe }(hjhhhNhNubjy)}(h `c3-isp-core`h]h c3-isp-core}(hj"hhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh` sub-device is linked to 2 video device nodes for statistics capture and parameters programming:}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK=hjKhhubj)}(hhh](j)}(hCthe `c3-isp-stats` capture video device node for statistics captureh]jn)}(hj?h](hthe }(hjAhhhNhNubjy)}(h`c3-isp-stats`h]h c3-isp-stats}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjAubh1 capture video device node for statistics capture}(hjAhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK@hj=ubah}(h]h ]h"]h$]h&]uh1jhj:hhhhhNubj)}(hCthe `c3-isp-params` output video device for parameters programming h]jn)}(hBthe `c3-isp-params` output video device for parameters programmingh](hthe }(hjjhhhNhNubjy)}(h`c3-isp-params`h]h c3-isp-params}(hjrhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjjubh/ output video device for parameters programming}(hjjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKAhjfubah}(h]h ]h"]h$]h&]uh1jhj:hhhhhNubeh}(h]h ]h"]h$]h&]j#j$uh1jhhhK@hjKhhubjn)}(hiEach `c3-isp-resizer` sub-device is linked to a capture video device node where frames are captured from:h](hEach }(hjhhhNhNubjy)}(h`c3-isp-resizer`h]hc3-isp-resizer}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubhT sub-device is linked to a capture video device node where frames are captured from:}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKChjKhhubj)}(hhh](j)}(hE`c3-isp-resizer0` is linked to the `c3-isp-cap0` capture video deviceh]jn)}(hjh](jy)}(h`c3-isp-resizer0`h]hc3-isp-resizer0}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh is linked to the }(hjhhhNhNubjy)}(h `c3-isp-cap0`h]h c3-isp-cap0}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh capture video device}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKFhjubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubj)}(hE`c3-isp-resizer1` is linked to the `c3-isp-cap1` capture video deviceh]jn)}(hjh](jy)}(h`c3-isp-resizer1`h]hc3-isp-resizer1}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh is linked to the }(hjhhhNhNubjy)}(h `c3-isp-cap1`h]h c3-isp-cap1}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh capture video device}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKGhjubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubj)}(hF`c3-isp-resizer2` is linked to the `c3-isp-cap2` capture video device h]jn)}(hE`c3-isp-resizer2` is linked to the `c3-isp-cap2` capture video deviceh](jy)}(h`c3-isp-resizer2`h]hc3-isp-resizer2}(hj/hhhNhNubah}(h]h ]h"]h$]h&]uh1jxhj+ubh is linked to the }(hj+hhhNhNubjy)}(h `c3-isp-cap2`h]h c3-isp-cap2}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhj+ubh capture video device}(hj+hhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKHhj'ubah}(h]h ]h"]h$]h&]uh1jhjhhhhhNubeh}(h]h ]h"]h$]h&]j#j$uh1jhhhKFhjKhhubjn)}(hZThe media controller pipeline graph is as follows (with connected a IMX290 camera sensor):h]hZThe media controller pipeline graph is as follows (with connected a IMX290 camera sensor):}(hjehhhNhNubah}(h]h ]h"]h$]h&]uh1jmhhhKJhjKhhubhtarget)}(h.. _isp_topology_graph:h]h}(h]h ]h"]h$]h&]refidisp-topology-graphuh1jshKhjKhhhhubkfigure kernel_figure)}(hhh]hfigure)}(hhh](himage)}(he.. kernel-figure:: c3-isp.dot :alt: c3-isp.dot :align: center Media pipeline topology h]h}(h]h ]h"]h$]h&]alt c3-isp.doturiadmin-guide/media/c3-isp.dot candidates}*jsuh1jhjhhhKubhcaption)}(hMedia pipeline topologyh]hMedia pipeline topology}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhhhKShjubeh}(h]id1ah ]h"]h$]h&]aligncenteruh1jhjubah}(h]jah ]h"]isp_topology_graphah$]h&]uh1jhjKhhhhhNexpect_referenced_by_name}jjusexpect_referenced_by_id}jjusubeh}(h]driver-architecture-and-designah ]h"]driver architecture and designah$]h&]uh1jGhjIhhhhhK2ubjH)}(hhh](jM)}(hImplementationh]hImplementation}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jLhjhhhhhKVubjn)}(hRuntime configuration of the ISP hardware is performed on the `c3-isp-params` video device node using the :ref:`V4L2_META_FMT_C3ISP_PARAMS ` as data format. The buffer structure is defined by :c:type:`c3_isp_params_cfg`.h](h>Runtime configuration of the ISP hardware is performed on the }(hjhhhNhNubjy)}(h`c3-isp-params`h]h c3-isp-params}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjubh video device node using the }(hjhhhNhNubh)}(h>:ref:`V4L2_META_FMT_C3ISP_PARAMS `h]hinline)}(hjh]hV4L2_META_FMT_C3ISP_PARAMS}(hjhhhNhNubah}(h]h ](xrefstdstd-refeh"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]refdocadmin-guide/media/c3-isp refdomainj reftyperef refexplicitrefwarn reftargetv4l2-meta-fmt-c3isp-paramsuh1hhhhKXhjubh4 as data format. The buffer structure is defined by }(hjhhhNhNubh)}(h:c:type:`c3_isp_params_cfg`h]hliteral)}(hj! h]hc3_isp_params_cfg}(hj% hhhNhNubah}(h]h ](j cc-typeeh"]h$]h&]uh1j# hj ubah}(h]h ]h"]h$]h&]refdocj refdomainj/ reftypetype refexplicitrefwarnj c3_isp_params_cfguh1hhhhKXhjubh.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKXhjhhubjn)}(hStatistics are captured from the `c3-isp-stats` video device node using the :ref:`V4L2_META_FMT_C3ISP_STATS ` data format.h](h!Statistics are captured from the }(hjK hhhNhNubjy)}(h`c3-isp-stats`h]h c3-isp-stats}(hjS hhhNhNubah}(h]h ]h"]h$]h&]uh1jxhjK ubh video device node using the }(hjK hhhNhNubh)}(h<:ref:`V4L2_META_FMT_C3ISP_STATS `h]j)}(hjg h]hV4L2_META_FMT_C3ISP_STATS}(hji hhhNhNubah}(h]h ](j stdstd-refeh"]h$]h&]uh1jhje ubah}(h]h ]h"]h$]h&]refdocj refdomainjs reftyperef refexplicitrefwarnj v4l2-meta-fmt-c3isp-statsuh1hhhhK]hjK ubh data format.}(hjK hhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK]hjhhubjn)}(hThe final picture size and format is configured using the V4L2 video capture interface on the `c3-isp-cap[0, 2]` video device nodes.h](h^The final picture size and format is configured using the V4L2 video capture interface on the }(hj hhhNhNubjy)}(h`c3-isp-cap[0, 2]`h]hc3-isp-cap[0, 2]}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jxhj ubh video device nodes.}(hj hhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhK`hjhhubjn)}(hThe Amlogic C3 ISP is supported by `libcamera `_ with a dedicated pipeline handler and algorithms that perform run-time image correction and enhancement.h](h#The Amlogic C3 ISP is supported by }(hj hhhNhNubh reference)}(h$`libcamera `_h]h libcamera}(hj hhhNhNubah}(h]h ]h"]h$]h&]name libcamerarefurihttps://libcamera.orguh1j hj ubjt)}(h h]h}(h] libcameraah ]h"] libcameraah$]h&]refurij uh1js referencedKhj ubhi with a dedicated pipeline handler and algorithms that perform run-time image correction and enhancement.}(hj hhhNhNubeh}(h]h ]h"]h$]h&]uh1jmhhhKchjhhubeh}(h]implementationah ]h"]implementationah$]h&]uh1jGhjIhhhhhKVubeh}(h]/amlogic-c3-image-signal-processing-c3isp-driverah ]h"]1amlogic c3 image signal processing (c3isp) driverah$]h&]uh1jGhhhhhhhKubeh}(h]h ]h"]h$]h&]sourcehuh1hcurrent_sourceN current_lineNsettingsdocutils.frontendValues)}(jLN generatorN datestampN source_linkN source_urlN toc_backlinksentryfootnote_backlinksK sectnum_xformKstrip_commentsNstrip_elements_with_classesN strip_classesN report_levelK halt_levelKexit_status_levelKdebugNwarning_streamN tracebackinput_encoding utf-8-siginput_encoding_error_handlerstrictoutput_encodingutf-8output_encoding_error_handlerj error_encodingutf-8error_encoding_error_handlerbackslashreplace language_codeenrecord_dependenciesNconfigN id_prefixhauto_id_prefixid dump_settingsNdump_internalsNdump_transformsNdump_pseudo_xmlNexpose_internalsNstrict_visitorN_disable_configN_sourceh _destinationN _config_files]7/var/lib/git/docbuild/linux/Documentation/docutils.confafile_insertion_enabled raw_enabledKline_length_limitM'pep_referencesN pep_base_urlhttps://peps.python.org/pep_file_url_templatepep-%04drfc_referencesN rfc_base_url&https://datatracker.ietf.org/doc/html/ tab_widthKtrim_footnote_reference_spacesyntax_highlightlong smart_quotessmartquotes_locales]character_level_inline_markupdoctitle_xform docinfo_xformKsectsubtitle_xform image_loadinglinkembed_stylesheetcloak_email_addressessection_self_linkenvNubreporterNindirect_targets]substitution_defs}(hhhhhhj jjjj*jj9j-jHj<jWjKjfjZjujijjxjjjjjjjjjjjjjjjjj jjjj)jj8j,jGj;jVjJjejYjtjhjjwjjjjjjjjjjjjjjjjj jjj j(jj7j+jFj:jUjIjdjXjsjgjjvjjjjjjjjjjjjjjjjj jjj j'jj6j*jEj9jTjHjcjWjrjfjjujjjjjjjjjjjjjjjjjjjj j&jj5j)jDj8usubstitution_names}(amphߌaposhasthbrvbarj bsoljcentj*colonj9commajHcommatjWcopyjfcurrenjudarrjdegjdividejdollarjequalsjexcljfrac12jfrac14jfrac18jfrac34j frac38jfrac58j)frac78j8gtjGhalfjVhorbarjehyphenjtiexcljiquestjlaquojlarrjlcubjldquojlowbarjlparjlsqbjlsquoj ltjmicroj(middotj7nbspjFnotjUnumjdohmjsordfjordmjparajpercntjperiodjplusjplusmnjpoundjquestjquotj raquojrarrj'rcubj6rdquojEregjTrparjcrsqbjrrsquojsectjsemijshyjsoljsungjsup1jsup2jsup3jtimesjtradejuarrj&verbarj5yenjDurefnames}refids}j]juasnameids}(j j jjjHjEjjjjj j j j u nametypes}(j jjHjjj j uh}(j jIjj\jEjjjKjjj jj j jju footnote_refs} citation_refs} autofootnotes]autofootnote_refs]symbol_footnotes]symbol_footnote_refs] footnotes] citations]autofootnote_startKsymbol_footnote_startK id_counter collectionsCounter}j$ KsRparse_messages]transform_messages]hsystem_message)}(hhh]jn)}(hhh]h8Hyperlink target "isp-topology-graph" is not referenced.}hj sbah}(h]h ]h"]h$]h&]uh1jmhj ubah}(h]h ]h"]h$]h&]levelKtypeINFOsourcehlineKuh1j uba transformerN include_log]*Documentation/admin-guide/media/c3-isp.rst(NNNNta decorationNhhub.