€•C      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/uleds”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$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/zh_TW/leds/uleds”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/it_IT/leds/uleds”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ja_JP/leds/uleds”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ko_KR/leds/uleds”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/sp_SP/leds/uleds”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒUserspace LEDs”h]”hŒUserspace LEDs”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒ8/var/lib/git/docbuild/linux/Documentation/leds/uleds.rst”h KubhŒ	paragraph”“”)”}”(hŒThe uleds driver supports userspace LEDs. This can be useful for testing
triggers and can also be used to implement virtual LEDs.”h]”hŒThe uleds driver supports userspace LEDs. This can be useful for testing
triggers and can also be used to implement virtual LEDs.”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒUsage”h]”hŒUsage”…””}”(hhÊhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hhÇhžhhŸh¶h K
ubh¸)”}”(hŒÙWhen the driver is loaded, a character device is created at /dev/uleds. To
create a new LED class device, open /dev/uleds and write a uleds_user_dev
structure to it (found in kernel public header file linux/uleds.h)::”h]”hŒØWhen the driver is loaded, a character device is created at /dev/uleds. To
create a new LED class device, open /dev/uleds and write a uleds_user_dev
structure to it (found in kernel public header file linux/uleds.h):”…””}”(hhØhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÇhžhubhŒliteral_block”“”)”}”(hŒZ#define LED_MAX_NAME_SIZE 64

struct uleds_user_dev {
    char name[LED_MAX_NAME_SIZE];
};”h]”hŒZ#define LED_MAX_NAME_SIZE 64

struct uleds_user_dev {
    char name[LED_MAX_NAME_SIZE];
};”…””}”hhèsbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1hæhŸh¶h KhhÇhžhubh¸)”}”(hŒÀA new LED class device will be created with the name given. The name can be
any valid sysfs device node name, but consider using the LED class naming
convention of "devicename:color:function".”h]”hŒÄA new LED class device will be created with the name given. The name can be
any valid sysfs device node name, but consider using the LED class naming
convention of â€œdevicename:color:functionâ€.”…””}”(hhøhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÇhžhubh¸)”}”(hŒóThe current brightness is found by reading a single byte from the character
device. Values are unsigned: 0 to 255. Reading will block until the brightness
changes. The device node can also be polled to notify when the brightness value
changes.”h]”hŒóThe current brightness is found by reading a single byte from the character
device. Values are unsigned: 0 to 255. Reading will block until the brightness
changes. The device node can also be polled to notify when the brightness value
changes.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÇhžhubh¸)”}”(hŒWThe LED class device will be removed when the open file handle to /dev/uleds
is closed.”h]”hŒWThe LED class device will be removed when the open file handle to /dev/uleds
is closed.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÇhžhubh¸)”}”(hŒXMultiple LED class devices are created by opening additional file handles to
/dev/uleds.”h]”hŒXMultiple LED class devices are created by opening additional file handles to
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ubeh}”(h]”Œuserspace-leds”ah ]”h"]”Œuserspace leds”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
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