€•µ      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/leds/ledtrig-usbport”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$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ(/translations/zh_TW/leds/ledtrig-usbport”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ(/translations/it_IT/leds/ledtrig-usbport”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ(/translations/ja_JP/leds/ledtrig-usbport”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ(/translations/ko_KR/leds/ledtrig-usbport”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ(/translations/sp_SP/leds/ledtrig-usbport”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒUSB port LED trigger”h]”hŒUSB port LED trigger”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒB/var/lib/git/docbuild/linux/Documentation/leds/ledtrig-usbport.rst”h KubhŒ	paragraph”“”)”}”(hŒ±This LED trigger can be used for signalling to the user a presence of USB device
in a given port. It simply turns on LED when device appears and turns it off
when it disappears.”h]”hŒ±This LED trigger can be used for signalling to the user a presence of USB device
in a given port. It simply turns on LED when device appears and turns it off
when it disappears.”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒ¼It requires selecting USB ports that should be observed. All available ones are
listed as separated entries in a "ports" subdirectory. Selecting is handled by
echoing "1" to a chosen port.”h]”hŒÄIt requires selecting USB ports that should be observed. All available ones are
listed as separated entries in a â€œportsâ€ subdirectory. Selecting is handled by
echoing â€œ1â€ to a chosen port.”…””}”(hhÇhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K	hh£hžhubh¸)”}”(hŒSPlease note that this trigger allows selecting multiple USB ports for a single
LED.”h]”hŒSPlease note that this trigger allows selecting multiple USB ports for a single
LED.”…””}”(hhÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒ This can be useful in two cases:”h]”hŒ This can be useful in two cases:”…””}”(hhãhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒ41) Device with single USB LED and few physical ports”h]”hŒ41) Device with single USB LED and few physical ports”…””}”(hhôhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hhñhžhhŸh¶h Kubh¸)”}”(hŒ[In such a case LED will be turned on as long as there is at least one connected
USB device.”h]”hŒ[In such a case LED will be turned on as long as there is at least one connected
USB device.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khhñhžhubeh}”(h]”Œ1device-with-single-usb-led-and-few-physical-ports”ah ]”h"]”Œ41) device with single usb led and few physical ports”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubh¢)”}”(hhh]”(h§)”}”(hŒ92) Device with a physical port handled by few controllers”h]”hŒ92) Device with a physical port handled by few controllers”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hj  hžhhŸh¶h Kubh¸)”}”(hŒãSome devices may have one controller per PHY standard. E.g. USB 3.0 physical
port may be handled by ohci-platform, ehci-platform and xhci-hcd. If there is
only one LED user will most likely want to assign ports from all 3 hubs.”h]”hŒãSome devices may have one controller per PHY standard. E.g. USB 3.0 physical
port may be handled by ohci-platform, ehci-platform and xhci-hcd. If there is
only one LED user will most likely want to assign ports from all 3 hubs.”…””}”(hj)  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj  hžhubh¸)”}”(hŒSThis trigger can be activated from user space on led class devices as shown
below::”h]”hŒRThis trigger can be activated from user space on led class devices as shown
below:”…””}”(hj7  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hj  hžhubhŒliteral_block”“”)”}”(hŒecho usbport > trigger”h]”hŒecho usbport > trigger”…””}”hjG  sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1jE  hŸh¶h K#hj  hžhubh¸)”}”(hŒwThis adds sysfs attributes to the LED that are documented in:
Documentation/ABI/testing/sysfs-class-led-trigger-usbport”h]”hŒwThis adds sysfs attributes to the LED that are documented in:
Documentation/ABI/testing/sysfs-class-led-trigger-usbport”…””}”(hjW  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K%hj  hžhubh¸)”}”(hŒExample use-case::”h]”hŒExample use-case:”…””}”(hje  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K(hj  hžhubjF  )”}”(hŒyecho usbport > trigger
echo 1 > ports/usb1-port1
echo 1 > ports/usb2-port1
cat ports/usb1-port1
echo 0 > ports/usb1-port1”h]”hŒyecho usbport > trigger
echo 1 > ports/usb1-port1
echo 1 > ports/usb2-port1
cat ports/usb1-port1
echo 0 > ports/usb1-port1”…””}”hjs  sbah}”(h]”h ]”h"]”h$]”h&]”jU  jV  uh1jE  hŸh¶h K*hj  hžhubeh}”(h]”Œ6device-with-a-physical-port-handled-by-few-controllers”ah ]”h"]”Œ92) device with a physical port handled by few controllers”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubeh}”(h]”Œusb-port-led-trigger”ah ]”h"]”Œusb port led trigger”ah$]”h&]”uh1h¡hhhžhhŸh¶h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h¶uh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¦NŒ	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
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j´  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h¶Œ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(jŽ  j‹  j  j  j†  jƒ  uŒ	nametypes”}”(jŽ  ‰j  ‰j†  ‰uh}”(j‹  h£j  hñjƒ  j  uŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
decoration”Nhžhub.