€•o)      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ/translations/zh_CN/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/zh_TW/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/it_IT/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ja_JP/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ko_KR/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/sp_SP/gpu/mcde”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒ6/var/lib/git/docbuild/linux/Documentation/gpu/mcde.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒ6drm/mcde ST-Ericsson MCDE Multi-channel display engine”h]”hŒ6drm/mcde ST-Ericsson MCDE Multi-channel display engine”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ	paragraph”“”)”}”(hXo  The MCDE (short for multi-channel display engine) is a graphics
controller found in the Ux500 chipsets, such as NovaThor U8500.
It was initially conceptualized by ST Microelectronics for the
successor of the Nomadik line, STn8500 but productified in the
ST-Ericsson U8500 where is was used for mass-market deployments
in Android phones from Samsung and Sony Ericsson.”h]”hXo  The MCDE (short for multi-channel display engine) is a graphics
controller found in the Ux500 chipsets, such as NovaThor U8500.
It was initially conceptualized by ST Microelectronics for the
successor of the Nomadik line, STn8500 but productified in the
ST-Ericsson U8500 where is was used for mass-market deployments
in Android phones from Samsung and Sony Ericsson.”…””}”(hhËhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K	hh¶hžhubhÊ)”}”(hŒ¬It can do 1080p30 on SDTV CCIR656, DPI-2, DBI-2 or DSI for
panels with or without frame buffering and can convert most
input formats including most variants of RGB and YUV.”h]”hŒ¬It can do 1080p30 on SDTV CCIR656, DPI-2, DBI-2 or DSI for
panels with or without frame buffering and can convert most
input formats including most variants of RGB and YUV.”…””}”(hhÚhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h Khh¶hžhubhÊ)”}”(hŒOThe hardware has four display pipes, and the layout is a little
bit like this::”h]”hŒNThe hardware has four display pipes, and the layout is a little
bit like this:”…””}”(hhéhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h Khh¶hžhubhŒliteral_block”“”)”}”(hŒºMemory     -> Overlay -> Channel -> FIFO -> 8 formatters -> DSI/DPI
External      0..5       0..3       A,B,    6 x DSI         bridge
source 0..9                         C0,C1   2 x DPI”h]”hŒºMemory     -> Overlay -> Channel -> FIFO -> 8 formatters -> DSI/DPI
External      0..5       0..3       A,B,    6 x DSI         bridge
source 0..9                         C0,C1   2 x DPI”…””}”hhúsbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1høhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h Khh¶hžhubhÊ)”}”(hŒ¼FIFOs A and B are for LCD and HDMI while FIFO CO/C1 are for
panels with embedded buffer.
6 of the formatters are for DSI, 3 pairs for VID/CMD respectively.
2 of the formatters are for DPI.”h]”hŒ¼FIFOs A and B are for LCD and HDMI while FIFO CO/C1 are for
panels with embedded buffer.
6 of the formatters are for DSI, 3 pairs for VID/CMD respectively.
2 of the formatters are for DPI.”…””}”(hj	  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h Khh¶hžhubhÊ)”}”(hŒòBehind the formatters are the DSI or DPI ports that route to
the external pins of the chip. As there are 3 DSI ports and one
DPI port, it is possible to configure up to 4 display pipelines
(effectively using channels 0..3) for concurrent use.”h]”hŒòBehind the formatters are the DSI or DPI ports that route to
the external pins of the chip. As there are 3 DSI ports and one
DPI port, it is possible to configure up to 4 display pipelines
(effectively using channels 0..3) for concurrent use.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K hh¶hžhubhÊ)”}”(hX]  In the current DRM/KMS setup, we use one external source, one overlay,
one FIFO and one formatter which we connect to the simple DMA framebuffer
helpers. We then provide a bridge to the DSI port, and on the DSI port
bridge we connect hang a panel bridge or other bridge. This may be subject
to change as we exploit more of the hardware capabilities.”h]”hX]  In the current DRM/KMS setup, we use one external source, one overlay,
one FIFO and one formatter which we connect to the simple DMA framebuffer
helpers. We then provide a bridge to the DSI port, and on the DSI port
bridge we connect hang a panel bridge or other bridge. This may be subject
to change as we exploit more of the hardware capabilities.”…””}”(hj'  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K%hh¶hžhubhÊ)”}”(hŒTODO:”h]”hŒTODO:”…””}”(hj6  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K+hh¶hžhubhŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒ“Enabled damaged rectangles using drm_plane_enable_fb_damage_clips()
so we can selectively just transmit the damaged area to a
command-only display.”h]”hÊ)”}”(hŒ“Enabled damaged rectangles using drm_plane_enable_fb_damage_clips()
so we can selectively just transmit the damaged area to a
command-only display.”h]”hŒ“Enabled damaged rectangles using drm_plane_enable_fb_damage_clips()
so we can selectively just transmit the damaged area to a
command-only display.”…””}”(hjP  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K-hjL  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jJ  hjG  ubjK  )”}”(hŒmEnable mixing of more planes, possibly at the cost of moving away
from using the simple framebuffer pipeline.”h]”hÊ)”}”(hŒmEnable mixing of more planes, possibly at the cost of moving away
from using the simple framebuffer pipeline.”h]”hŒmEnable mixing of more planes, possibly at the cost of moving away
from using the simple framebuffer pipeline.”…””}”(hji  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K0hje  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jJ  hjG  ubjK  )”}”(hŒNEnable output to bridges such as the AV8100 HDMI encoder from
the DSI bridge.
”h]”hÊ)”}”(hŒMEnable output to bridges such as the AV8100 HDMI encoder from
the DSI bridge.”h]”hŒMEnable output to bridges such as the AV8100 HDMI encoder from
the DSI bridge.”…””}”(hj‚  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸŒW/var/lib/git/docbuild/linux/Documentation/gpu/mcde:7: ./drivers/gpu/drm/mcde/mcde_drv.c”h K2hj~  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jJ  hjG  ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1jE  hŸj^  h K-hh¶hžhubeh}”(h]”Œ6drm-mcde-st-ericsson-mcde-multi-channel-display-engine”ah ]”h"]”Œ6drm/mcde st-ericsson mcde multi-channel display engine”ah$]”h&]”uh1h´hhhžhhŸh³h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h³uh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¹NŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
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id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
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