€•eü      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/driver-api/gpio/consumer”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$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/zh_TW/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/it_IT/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/ja_JP/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/ko_KR/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/pt_BR/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/sp_SP/driver-api/gpio/consumer”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒ"GPIO Descriptor Consumer Interface”h]”hŒ"GPIO Descriptor Consumer Interface”…””}”(hh¼h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhh·h²hh³ŒF/var/lib/git/docbuild/linux/Documentation/driver-api/gpio/consumer.rst”h´KubhŒ	paragraph”“”)”}”(hŒEThis document describes the consumer interface of the GPIO framework.”h]”hŒEThis document describes the consumer interface of the GPIO framework.”…””}”(hhÍh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khh·h²hubh¶)”}”(hhh]”(h»)”}”(hŒGuidelines for GPIOs consumers”h]”hŒGuidelines for GPIOs consumers”…””}”(hhÞh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhhÛh²hh³hÊh´K	ubhÌ)”}”(hŒãDrivers that can't work without standard GPIO calls should have Kconfig entries
that depend on GPIOLIB or select GPIOLIB. The functions that allow a driver to
obtain and use GPIOs are available by including the following file::”h]”hŒäDrivers that canâ€™t work without standard GPIO calls should have Kconfig entries
that depend on GPIOLIB or select GPIOLIB. The functions that allow a driver to
obtain and use GPIOs are available by including the following file:”…””}”(hhìh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KhhÛh²hubhŒliteral_block”“”)”}”(hŒ #include <linux/gpio/consumer.h>”h]”hŒ #include <linux/gpio/consumer.h>”…””}”hhüsbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1húh³hÊh´KhhÛh²hubhÌ)”}”(hŒÆThere are static inline stubs for all functions in the header file in the case
where GPIOLIB is disabled. When these stubs are called they will emit
warnings. These stubs are used for two use cases:”h]”hŒÆThere are static inline stubs for all functions in the header file in the case
where GPIOLIB is disabled. When these stubs are called they will emit
warnings. These stubs are used for two use cases:”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KhhÛh²hubhŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒ·Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
the current platform does not enable or select GPIOLIB because we are not
going to execute the system anyway.
”h]”hÌ)”}”(hŒ¶Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
the current platform does not enable or select GPIOLIB because we are not
going to execute the system anyway.”h]”hŒ¶Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
the current platform does not enable or select GPIOLIB because we are not
going to execute the system anyway.”…””}”(hj%  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khj!  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  h²hh³hÊh´Nubj   )”}”(hX}  Truly optional GPIOLIB support - where the driver does not really make use
of the GPIOs on certain compile-time configurations for certain systems, but
will use it under other compile-time configurations. In this case the
consumer must make sure not to call into these functions, or the user will
be met with console warnings that may be perceived as intimidating.
Combining truly optional GPIOLIB usage with calls to
``[devm_]gpiod_get_optional()`` is a *bad idea*, and will result in weird
error messages. Use the ordinary getter functions with optional GPIOLIB:
some open coding of error handling should be expected when you do this.
”h]”hÌ)”}”(hX|  Truly optional GPIOLIB support - where the driver does not really make use
of the GPIOs on certain compile-time configurations for certain systems, but
will use it under other compile-time configurations. In this case the
consumer must make sure not to call into these functions, or the user will
be met with console warnings that may be perceived as intimidating.
Combining truly optional GPIOLIB usage with calls to
``[devm_]gpiod_get_optional()`` is a *bad idea*, and will result in weird
error messages. Use the ordinary getter functions with optional GPIOLIB:
some open coding of error handling should be expected when you do this.”h]”(hX¢  Truly optional GPIOLIB support - where the driver does not really make use
of the GPIOs on certain compile-time configurations for certain systems, but
will use it under other compile-time configurations. In this case the
consumer must make sure not to call into these functions, or the user will
be met with console warnings that may be perceived as intimidating.
Combining truly optional GPIOLIB usage with calls to
”…””}”(hj=  h²hh³Nh´NubhŒliteral”“”)”}”(hŒ``[devm_]gpiod_get_optional()``”h]”hŒ[devm_]gpiod_get_optional()”…””}”(hjG  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jE  hj=  ubhŒ is a ”…””}”(hj=  h²hh³Nh´NubhŒemphasis”“”)”}”(hŒ
*bad idea*”h]”hŒbad idea”…””}”(hj[  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jY  hj=  ubhŒ«, and will result in weird
error messages. Use the ordinary getter functions with optional GPIOLIB:
some open coding of error handling should be expected when you do this.”…””}”(hj=  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khj9  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  h²hh³hÊh´Nubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1j  h³hÊh´KhhÛh²hubhÌ)”}”(hXV  All the functions that work with the descriptor-based GPIO interface are
prefixed with ``gpiod_``. The ``gpio_`` prefix is used for the legacy
interface. No other function in the kernel should use these prefixes. The use
of the legacy functions is strongly discouraged, new code should use
<linux/gpio/consumer.h> and descriptors exclusively.”h]”(hŒWAll the functions that work with the descriptor-based GPIO interface are
prefixed with ”…””}”(hj  h²hh³Nh´NubjF  )”}”(hŒ
``gpiod_``”h]”hŒgpiod_”…””}”(hj‰  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jE  hj  ubhŒ. The ”…””}”(hj  h²hh³Nh´NubjF  )”}”(hŒ	``gpio_``”h]”hŒgpio_”…””}”(hj›  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jE  hj  ubhŒæ prefix is used for the legacy
interface. No other function in the kernel should use these prefixes. The use
of the legacy functions is strongly discouraged, new code should use
<linux/gpio/consumer.h> and descriptors exclusively.”…””}”(hj  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K#hhÛh²hubeh}”(h]”Œguidelines-for-gpios-consumers”ah ]”h"]”Œguidelines for gpios consumers”ah$]”h&]”uh1hµhh·h²hh³hÊh´K	ubh¶)”}”(hhh]”(h»)”}”(hŒObtaining and Disposing GPIOs”h]”hŒObtaining and Disposing GPIOs”…””}”(hj¾  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj»  h²hh³hÊh´K+ubhÌ)”}”(hX=  With the descriptor-based interface, GPIOs are identified with an opaque,
non-forgeable handler that must be obtained through a call to one of the
gpiod_get() functions. Like many other kernel subsystems, gpiod_get() takes the
device that will use the GPIO and the function the requested GPIO is supposed to
fulfill::”h]”hX<  With the descriptor-based interface, GPIOs are identified with an opaque,
non-forgeable handler that must be obtained through a call to one of the
gpiod_get() functions. Like many other kernel subsystems, gpiod_get() takes the
device that will use the GPIO and the function the requested GPIO is supposed to
fulfill:”…””}”(hjÌ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K-hj»  h²hubhû)”}”(hŒwstruct gpio_desc *gpiod_get(struct device *dev, const char *con_id,
                            enum gpiod_flags flags)”h]”hŒwstruct gpio_desc *gpiod_get(struct device *dev, const char *con_id,
                            enum gpiod_flags flags)”…””}”hjÚ  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K3hj»  h²hubhÌ)”}”(hŒIf a function is implemented by using several GPIOs together (e.g. a simple LED
device that displays digits), an additional index argument can be specified::”h]”hŒœIf a function is implemented by using several GPIOs together (e.g. a simple LED
device that displays digits), an additional index argument can be specified:”…””}”(hjè  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K6hj»  h²hubhû)”}”(hŒ·struct gpio_desc *gpiod_get_index(struct device *dev,
                                  const char *con_id, unsigned int idx,
                                  enum gpiod_flags flags)”h]”hŒ·struct gpio_desc *gpiod_get_index(struct device *dev,
                                  const char *con_id, unsigned int idx,
                                  enum gpiod_flags flags)”…””}”hjö  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K9hj»  h²hubhÌ)”}”(hŒzFor a more detailed description of the con_id parameter in the DeviceTree case
see Documentation/driver-api/gpio/board.rst”h]”hŒzFor a more detailed description of the con_id parameter in the DeviceTree case
see Documentation/driver-api/gpio/board.rst”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K=hj»  h²hubhÌ)”}”(hŒlThe flags parameter is used to optionally specify a direction and initial value
for the GPIO. Values can be:”h]”hŒlThe flags parameter is used to optionally specify a direction and initial value
for the GPIO. Values can be:”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K@hj»  h²hubj  )”}”(hhh]”(j   )”}”(hŒwGPIOD_ASIS or 0 to not initialize the GPIO at all. The direction must be set
later with one of the dedicated functions.”h]”hÌ)”}”(hŒwGPIOD_ASIS or 0 to not initialize the GPIO at all. The direction must be set
later with one of the dedicated functions.”h]”hŒwGPIOD_ASIS or 0 to not initialize the GPIO at all. The direction must be set
later with one of the dedicated functions.”…””}”(hj'  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KChj#  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubj   )”}”(hŒ)GPIOD_IN to initialize the GPIO as input.”h]”hÌ)”}”(hj=  h]”hŒ)GPIOD_IN to initialize the GPIO as input.”…””}”(hj?  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KEhj;  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubj   )”}”(hŒAGPIOD_OUT_LOW to initialize the GPIO as output with a value of 0.”h]”hÌ)”}”(hjT  h]”hŒAGPIOD_OUT_LOW to initialize the GPIO as output with a value of 0.”…””}”(hjV  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KFhjR  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubj   )”}”(hŒBGPIOD_OUT_HIGH to initialize the GPIO as output with a value of 1.”h]”hÌ)”}”(hjk  h]”hŒBGPIOD_OUT_HIGH to initialize the GPIO as output with a value of 1.”…””}”(hjm  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KGhji  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubj   )”}”(hŒqGPIOD_OUT_LOW_OPEN_DRAIN same as GPIOD_OUT_LOW but also enforce the line
to be electrically used with open drain.”h]”hÌ)”}”(hŒqGPIOD_OUT_LOW_OPEN_DRAIN same as GPIOD_OUT_LOW but also enforce the line
to be electrically used with open drain.”h]”hŒqGPIOD_OUT_LOW_OPEN_DRAIN same as GPIOD_OUT_LOW but also enforce the line
to be electrically used with open drain.”…””}”(hj„  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KHhj€  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubj   )”}”(hŒtGPIOD_OUT_HIGH_OPEN_DRAIN same as GPIOD_OUT_HIGH but also enforce the line
to be electrically used with open drain.
”h]”hÌ)”}”(hŒsGPIOD_OUT_HIGH_OPEN_DRAIN same as GPIOD_OUT_HIGH but also enforce the line
to be electrically used with open drain.”h]”hŒsGPIOD_OUT_HIGH_OPEN_DRAIN same as GPIOD_OUT_HIGH but also enforce the line
to be electrically used with open drain.”…””}”(hjœ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KJhj˜  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj   h²hh³hÊh´Nubeh}”(h]”h ]”h"]”h$]”h&]”j  Œ*”uh1j  h³hÊh´KChj»  h²hubhÌ)”}”(hŒ«Note that the initial value is *logical* and the physical line level depends on
whether the line is configured active high or active low (see
:ref:`active_low_semantics`).”h]”(hŒNote that the initial value is ”…””}”(hj·  h²hh³Nh´NubjZ  )”}”(hŒ	*logical*”h]”hŒlogical”…””}”(hj¿  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jY  hj·  ubhŒf and the physical line level depends on
whether the line is configured active high or active low (see
”…””}”(hj·  h²hh³Nh´Nubh)”}”(hŒ:ref:`active_low_semantics`”h]”hŒinline”“”)”}”(hjÓ  h]”hŒactive_low_semantics”…””}”(hj×  h²hh³Nh´Nubah}”(h]”h ]”(Œxref”Œstd”Œstd-ref”eh"]”h$]”h&]”uh1jÕ  hjÑ  ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”Œdriver-api/gpio/consumer”Œ	refdomain”jâ  Œreftype”Œref”Œrefexplicit”‰Œrefwarn”ˆŒ	reftarget”Œactive_low_semantics”uh1hh³hÊh´KMhj·  ubhŒ).”…””}”(hj·  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KMhj»  h²hubhÌ)”}”(hX8  The two last flags are used for use cases where open drain is mandatory, such
as I2C: if the line is not already configured as open drain in the mappings
(see board.rst), then open drain will be enforced anyway and a warning will be
printed that the board configuration needs to be updated to match the use case.”h]”hX8  The two last flags are used for use cases where open drain is mandatory, such
as I2C: if the line is not already configured as open drain in the mappings
(see board.rst), then open drain will be enforced anyway and a warning will be
printed that the board configuration needs to be updated to match the use case.”…””}”(hj   h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KQhj»  h²hubhÌ)”}”(hXµ  Both functions return either a valid GPIO descriptor, or an error code checkable
with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
if and only if no GPIO has been assigned to the device/function/index triplet,
other error codes are used for cases where a GPIO has been assigned but an error
occurred while trying to acquire it. This is useful to discriminate between mere
errors and an absence of GPIO for optional GPIO parameters. For the common
pattern where a GPIO is optional, the gpiod_get_optional() and
gpiod_get_index_optional() functions can be used. These functions return NULL
instead of -ENOENT if no GPIO has been assigned to the requested function::”h]”hX´  Both functions return either a valid GPIO descriptor, or an error code checkable
with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
if and only if no GPIO has been assigned to the device/function/index triplet,
other error codes are used for cases where a GPIO has been assigned but an error
occurred while trying to acquire it. This is useful to discriminate between mere
errors and an absence of GPIO for optional GPIO parameters. For the common
pattern where a GPIO is optional, the gpiod_get_optional() and
gpiod_get_index_optional() functions can be used. These functions return NULL
instead of -ENOENT if no GPIO has been assigned to the requested function:”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KVhj»  h²hubhû)”}”(hX¯  struct gpio_desc *gpiod_get_optional(struct device *dev,
                                     const char *con_id,
                                     enum gpiod_flags flags)

struct gpio_desc *gpiod_get_index_optional(struct device *dev,
                                           const char *con_id,
                                           unsigned int index,
                                           enum gpiod_flags flags)”h]”hX¯  struct gpio_desc *gpiod_get_optional(struct device *dev,
                                     const char *con_id,
                                     enum gpiod_flags flags)

struct gpio_desc *gpiod_get_index_optional(struct device *dev,
                                           const char *con_id,
                                           unsigned int index,
                                           enum gpiod_flags flags)”…””}”hj  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K`hj»  h²hubhÌ)”}”(hXR  Note that gpio_get*_optional() functions (and their managed variants), unlike
the rest of gpiolib API, also return NULL when gpiolib support is disabled.
This is helpful to driver authors, since they do not need to special case
-ENOSYS return codes.  System integrators should however be careful to enable
gpiolib on systems that need it.”h]”hXR  Note that gpio_get*_optional() functions (and their managed variants), unlike
the rest of gpiolib API, also return NULL when gpiolib support is disabled.
This is helpful to driver authors, since they do not need to special case
-ENOSYS return codes.  System integrators should however be careful to enable
gpiolib on systems that need it.”…””}”(hj*  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kihj»  h²hubhÌ)”}”(hŒPFor a function using multiple GPIOs all of those can be obtained with one call::”h]”hŒOFor a function using multiple GPIOs all of those can be obtained with one call:”…””}”(hj8  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kohj»  h²hubhû)”}”(hŒ¨struct gpio_descs *gpiod_get_array(struct device *dev,
                                   const char *con_id,
                                   enum gpiod_flags flags)”h]”hŒ¨struct gpio_descs *gpiod_get_array(struct device *dev,
                                   const char *con_id,
                                   enum gpiod_flags flags)”…””}”hjF  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Kqhj»  h²hubhÌ)”}”(hŒÜThis function returns a struct gpio_descs which contains an array of
descriptors.  It also contains a pointer to a gpiolib private structure which,
if passed back to get/set array functions, may speed up I/O processing::”h]”hŒÛThis function returns a struct gpio_descs which contains an array of
descriptors.  It also contains a pointer to a gpiolib private structure which,
if passed back to get/set array functions, may speed up I/O processing:”…””}”(hjT  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kuhj»  h²hubhû)”}”(hŒustruct gpio_descs {
        struct gpio_array *info;
        unsigned int ndescs;
        struct gpio_desc *desc[];
}”h]”hŒustruct gpio_descs {
        struct gpio_array *info;
        unsigned int ndescs;
        struct gpio_desc *desc[];
}”…””}”hjb  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Kyhj»  h²hubhÌ)”}”(hŒqThe following function returns NULL instead of -ENOENT if no GPIOs have been
assigned to the requested function::”h]”hŒpThe following function returns NULL instead of -ENOENT if no GPIOs have been
assigned to the requested function:”…””}”(hjp  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khj»  h²hubhû)”}”(hŒÃstruct gpio_descs *gpiod_get_array_optional(struct device *dev,
                                            const char *con_id,
                                            enum gpiod_flags flags)”h]”hŒÃstruct gpio_descs *gpiod_get_array_optional(struct device *dev,
                                            const char *con_id,
                                            enum gpiod_flags flags)”…””}”hj~  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K‚hj»  h²hubhÌ)”}”(hŒ=Device-managed variants of these functions are also defined::”h]”hŒ<Device-managed variants of these functions are also defined:”…””}”(hjŒ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K†hj»  h²hubhû)”}”(hXÑ  struct gpio_desc *devm_gpiod_get(struct device *dev, const char *con_id,
                                 enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_index(struct device *dev,
                                       const char *con_id,
                                       unsigned int idx,
                                       enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_optional(struct device *dev,
                                          const char *con_id,
                                          enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_index_optional(struct device *dev,
                                                const char *con_id,
                                                unsigned int index,
                                                enum gpiod_flags flags)

struct gpio_descs *devm_gpiod_get_array(struct device *dev,
                                        const char *con_id,
                                        enum gpiod_flags flags)

struct gpio_descs *devm_gpiod_get_array_optional(struct device *dev,
                                                 const char *con_id,
                                                 enum gpiod_flags flags)”h]”hXÑ  struct gpio_desc *devm_gpiod_get(struct device *dev, const char *con_id,
                                 enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_index(struct device *dev,
                                       const char *con_id,
                                       unsigned int idx,
                                       enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_optional(struct device *dev,
                                          const char *con_id,
                                          enum gpiod_flags flags)

struct gpio_desc *devm_gpiod_get_index_optional(struct device *dev,
                                                const char *con_id,
                                                unsigned int index,
                                                enum gpiod_flags flags)

struct gpio_descs *devm_gpiod_get_array(struct device *dev,
                                        const char *con_id,
                                        enum gpiod_flags flags)

struct gpio_descs *devm_gpiod_get_array_optional(struct device *dev,
                                                 const char *con_id,
                                                 enum gpiod_flags flags)”…””}”hjš  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Kˆhj»  h²hubhÌ)”}”(hŒEA GPIO descriptor can be disposed of using the gpiod_put() function::”h]”hŒDA GPIO descriptor can be disposed of using the gpiod_put() function:”…””}”(hj¨  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K¡hj»  h²hubhû)”}”(hŒ&void gpiod_put(struct gpio_desc *desc)”h]”hŒ&void gpiod_put(struct gpio_desc *desc)”…””}”hj¶  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K£hj»  h²hubhÌ)”}”(hŒ1For an array of GPIOs this function can be used::”h]”hŒ0For an array of GPIOs this function can be used:”…””}”(hjÄ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K¥hj»  h²hubhû)”}”(hŒ.void gpiod_put_array(struct gpio_descs *descs)”h]”hŒ.void gpiod_put_array(struct gpio_descs *descs)”…””}”hjÒ  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K§hj»  h²hubhÌ)”}”(hŒÉIt is strictly forbidden to use a descriptor after calling these functions.
It is also not allowed to individually release descriptors (using gpiod_put())
from an array acquired with gpiod_get_array().”h]”hŒÉIt is strictly forbidden to use a descriptor after calling these functions.
It is also not allowed to individually release descriptors (using gpiod_put())
from an array acquired with gpiod_get_array().”…””}”(hjà  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K©hj»  h²hubhÌ)”}”(hŒ1The device-managed variants are, unsurprisingly::”h]”hŒ0The device-managed variants are, unsurprisingly:”…””}”(hjî  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K­hj»  h²hubhû)”}”(hŒˆvoid devm_gpiod_put(struct device *dev, struct gpio_desc *desc)

void devm_gpiod_put_array(struct device *dev, struct gpio_descs *descs)”h]”hŒˆvoid devm_gpiod_put(struct device *dev, struct gpio_desc *desc)

void devm_gpiod_put_array(struct device *dev, struct gpio_descs *descs)”…””}”hjü  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K¯hj»  h²hubeh}”(h]”Œobtaining-and-disposing-gpios”ah ]”h"]”Œobtaining and disposing gpios”ah$]”h&]”uh1hµhh·h²hh³hÊh´K+ubh¶)”}”(hhh]”(h»)”}”(hŒUsing GPIOs”h]”hŒUsing GPIOs”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj  h²hh³hÊh´Kµubh¶)”}”(hhh]”(h»)”}”(hŒSetting Direction”h]”hŒSetting Direction”…””}”(hj&  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj#  h²hh³hÊh´K¸ubhÌ)”}”(hŒÉThe first thing a driver must do with a GPIO is setting its direction. If no
direction-setting flags have been given to gpiod_get*(), this is done by
invoking one of the gpiod_direction_*() functions::”h]”hŒÈThe first thing a driver must do with a GPIO is setting its direction. If no
direction-setting flags have been given to gpiod_get*(), this is done by
invoking one of the gpiod_direction_*() functions:”…””}”(hj4  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K¹hj#  h²hubhû)”}”(hŒoint gpiod_direction_input(struct gpio_desc *desc)
int gpiod_direction_output(struct gpio_desc *desc, int value)”h]”hŒoint gpiod_direction_input(struct gpio_desc *desc)
int gpiod_direction_output(struct gpio_desc *desc, int value)”…””}”hjB  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´K½hj#  h²hubhÌ)”}”(hXP  The return value is zero for success, else a negative errno. It should be
checked, since the get/set calls don't return errors and since misconfiguration
is possible. You should normally issue these calls from a task context. However,
for spinlock-safe GPIOs it is OK to use them before tasking is enabled, as part
of early board setup.”h]”hXR  The return value is zero for success, else a negative errno. It should be
checked, since the get/set calls donâ€™t return errors and since misconfiguration
is possible. You should normally issue these calls from a task context. However,
for spinlock-safe GPIOs it is OK to use them before tasking is enabled, as part
of early board setup.”…””}”(hjP  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÀhj#  h²hubhÌ)”}”(hŒFor output GPIOs, the value provided becomes the initial output value. This
helps avoid signal glitching during system startup.”h]”hŒFor output GPIOs, the value provided becomes the initial output value. This
helps avoid signal glitching during system startup.”…””}”(hj^  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÆhj#  h²hubhÌ)”}”(hŒ9A driver can also query the current direction of a GPIO::”h]”hŒ8A driver can also query the current direction of a GPIO:”…””}”(hjl  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÉhj#  h²hubhû)”}”(hŒ5int gpiod_get_direction(const struct gpio_desc *desc)”h]”hŒ5int gpiod_get_direction(const struct gpio_desc *desc)”…””}”hjz  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´KËhj#  h²hubhÌ)”}”(hŒSThis function returns 0 for output, 1 for input, or an error code in case of error.”h]”hŒSThis function returns 0 for output, 1 for input, or an error code in case of error.”…””}”(hjˆ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÍhj#  h²hubhÌ)”}”(hŒ¨Be aware that there is no default direction for GPIOs. Therefore, **using a GPIO
without setting its direction first is illegal and will result in undefined
behavior!**”h]”(hŒBBe aware that there is no default direction for GPIOs. Therefore, ”…””}”(hj–  h²hh³Nh´NubhŒstrong”“”)”}”(hŒf**using a GPIO
without setting its direction first is illegal and will result in undefined
behavior!**”h]”hŒbusing a GPIO
without setting its direction first is illegal and will result in undefined
behavior!”…””}”(hj   h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jž  hj–  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÏhj#  h²hubeh}”(h]”Œsetting-direction”ah ]”h"]”Œsetting direction”ah$]”h&]”uh1hµhj  h²hh³hÊh´K¸ubh¶)”}”(hhh]”(h»)”}”(hŒSpinlock-Safe GPIO Access”h]”hŒSpinlock-Safe GPIO Access”…””}”(hj¿  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj¼  h²hh³hÊh´KÕubhÌ)”}”(hŒ¿Most GPIO controllers can be accessed with memory read/write instructions. Those
don't need to sleep, and can safely be done from inside hard (non-threaded) IRQ
handlers and similar contexts.”h]”hŒÁMost GPIO controllers can be accessed with memory read/write instructions. Those
donâ€™t need to sleep, and can safely be done from inside hard (non-threaded) IRQ
handlers and similar contexts.”…””}”(hjÍ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÖhj¼  h²hubhÌ)”}”(hŒ@Use the following calls to access GPIOs from an atomic context::”h]”hŒ?Use the following calls to access GPIOs from an atomic context:”…””}”(hjÛ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KÚhj¼  h²hubhû)”}”(hŒkint gpiod_get_value(const struct gpio_desc *desc);
void gpiod_set_value(struct gpio_desc *desc, int value);”h]”hŒkint gpiod_get_value(const struct gpio_desc *desc);
void gpiod_set_value(struct gpio_desc *desc, int value);”…””}”hjé  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´KÜhj¼  h²hubhÌ)”}”(hX  The values are boolean, zero for inactive, nonzero for active. When reading the
value of an output pin, the value returned should be what's seen on the pin.
That won't always match the specified output value, because of issues including
open-drain signaling and output latencies.”h]”hX  The values are boolean, zero for inactive, nonzero for active. When reading the
value of an output pin, the value returned should be whatâ€™s seen on the pin.
That wonâ€™t always match the specified output value, because of issues including
open-drain signaling and output latencies.”…””}”(hj÷  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kßhj¼  h²hubhÌ)”}”(hXW  The get/set calls do not return errors because "invalid GPIO" should have been
reported earlier from gpiod_direction_*(). However, note that not all platforms
can read the value of output pins; those that can't should always return zero.
Also, using these calls for GPIOs that can't safely be accessed without sleeping
(see below) is an error.”h]”hX_  The get/set calls do not return errors because â€œinvalid GPIOâ€ should have been
reported earlier from gpiod_direction_*(). However, note that not all platforms
can read the value of output pins; those that canâ€™t should always return zero.
Also, using these calls for GPIOs that canâ€™t safely be accessed without sleeping
(see below) is an error.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kähj¼  h²hubeh}”(h]”Œspinlock-safe-gpio-access”ah ]”h"]”Œspinlock-safe gpio access”ah$]”h&]”uh1hµhj  h²hh³hÊh´KÕubh¶)”}”(hhh]”(h»)”}”(hŒGPIO Access That May Sleep”h]”hŒGPIO Access That May Sleep”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj  h²hh³hÊh´KìubhÌ)”}”(hX  Some GPIO controllers must be accessed using message based buses like I2C or
SPI. Commands to read or write those GPIO values require waiting to get to the
head of a queue to transmit a command and get its response. This requires
sleeping, which can't be done from inside IRQ handlers.”h]”hX  Some GPIO controllers must be accessed using message based buses like I2C or
SPI. Commands to read or write those GPIO values require waiting to get to the
head of a queue to transmit a command and get its response. This requires
sleeping, which canâ€™t be done from inside IRQ handlers.”…””}”(hj,  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kíhj  h²hubhÌ)”}”(hŒpPlatforms that support this type of GPIO distinguish them from other GPIOs by
returning nonzero from this call::”h]”hŒoPlatforms that support this type of GPIO distinguish them from other GPIOs by
returning nonzero from this call:”…””}”(hj:  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kòhj  h²hubhû)”}”(hŒ0int gpiod_cansleep(const struct gpio_desc *desc)”h]”hŒ0int gpiod_cansleep(const struct gpio_desc *desc)”…””}”hjH  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Kõhj  h²hubhÌ)”}”(hŒ?To access such GPIOs, a different set of accessors is defined::”h]”hŒ>To access such GPIOs, a different set of accessors is defined:”…””}”(hjV  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K÷hj  h²hubhû)”}”(hŒ{int gpiod_get_value_cansleep(const struct gpio_desc *desc)
void gpiod_set_value_cansleep(struct gpio_desc *desc, int value)”h]”hŒ{int gpiod_get_value_cansleep(const struct gpio_desc *desc)
void gpiod_set_value_cansleep(struct gpio_desc *desc, int value)”…””}”hjd  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Kùhj  h²hubhÌ)”}”(hŒÄAccessing such GPIOs requires a context which may sleep, for example a threaded
IRQ handler, and those accessors must be used instead of spinlock-safe
accessors without the cansleep() name suffix.”h]”hŒÄAccessing such GPIOs requires a context which may sleep, for example a threaded
IRQ handler, and those accessors must be used instead of spinlock-safe
accessors without the cansleep() name suffix.”…””}”(hjr  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kühj  h²hubhÌ)”}”(hŒ¯Other than the fact that these accessors might sleep, and will work on GPIOs
that can't be accessed from hardIRQ handlers, these calls act the same as the
spinlock-safe calls.”h]”hŒ±Other than the fact that these accessors might sleep, and will work on GPIOs
that canâ€™t be accessed from hardIRQ handlers, these calls act the same as the
spinlock-safe calls.”…””}”(hj€  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M hj  h²hubhŒtarget”“”)”}”(hŒ.. _active_low_semantics:”h]”h}”(h]”h ]”h"]”h$]”h&]”Œrefid”Œactive-low-semantics”uh1jŽ  h´Mhj  h²hh³hÊubeh}”(h]”Œgpio-access-that-may-sleep”ah ]”h"]”Œgpio access that may sleep”ah$]”h&]”uh1hµhj  h²hh³hÊh´Kìubh¶)”}”(hhh]”(h»)”}”(hŒ'The active low and open drain semantics”h]”hŒ'The active low and open drain semantics”…””}”(hj§  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj¤  h²hh³hÊh´MubhÌ)”}”(hXŒ  As a consumer should not have to care about the physical line level, all of the
gpiod_set_value_xxx() or gpiod_set_array_value_xxx() functions operate with
the *logical* value. With this they take the active low property into account.
This means that they check whether the GPIO is configured to be active low,
and if so, they manipulate the passed value before the physical line level is
driven.”h]”(hŒ As a consumer should not have to care about the physical line level, all of the
gpiod_set_value_xxx() or gpiod_set_array_value_xxx() functions operate with
the ”…””}”(hjµ  h²hh³Nh´NubjZ  )”}”(hŒ	*logical*”h]”hŒlogical”…””}”(hj½  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jY  hjµ  ubhŒã value. With this they take the active low property into account.
This means that they check whether the GPIO is configured to be active low,
and if so, they manipulate the passed value before the physical line level is
driven.”…””}”(hjµ  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M	hj¤  h²hubhÌ)”}”(hX%  The same is applicable for open drain or open source output lines: those do not
actively drive their output high (open drain) or low (open source), they just
switch their output to a high impedance value. The consumer should not need to
care. (For details read about open drain in driver.rst.)”h]”hX%  The same is applicable for open drain or open source output lines: those do not
actively drive their output high (open drain) or low (open source), they just
switch their output to a high impedance value. The consumer should not need to
care. (For details read about open drain in driver.rst.)”…””}”(hjÕ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj¤  h²hubhÌ)”}”(hŒµWith this, all the gpiod_set_(array)_value_xxx() functions interpret the
parameter "value" as "active" ("1") or "inactive" ("0"). The physical line
level will be driven accordingly.”h]”hŒÉWith this, all the gpiod_set_(array)_value_xxx() functions interpret the
parameter â€œvalueâ€ as â€œactiveâ€ (â€œ1â€) or â€œinactiveâ€ (â€œ0â€). The physical line
level will be driven accordingly.”…””}”(hjã  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj¤  h²hubhÌ)”}”(hŒ¯As an example, if the active low property for a dedicated GPIO is set, and the
gpiod_set_(array)_value_xxx() passes "active" ("1"), the physical line level
will be driven low.”h]”hŒ·As an example, if the active low property for a dedicated GPIO is set, and the
gpiod_set_(array)_value_xxx() passes â€œactiveâ€ (â€œ1â€), the physical line level
will be driven low.”…””}”(hjñ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj¤  h²hubhÌ)”}”(hŒTo summarize::”h]”hŒTo summarize:”…””}”(hjÿ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj¤  h²hubhû)”}”(hXÍ  Function (example)                 line property          physical line
gpiod_set_raw_value(desc, 0);      don't care             low
gpiod_set_raw_value(desc, 1);      don't care             high
gpiod_set_value(desc, 0);          default (active high)  low
gpiod_set_value(desc, 1);          default (active high)  high
gpiod_set_value(desc, 0);          active low             high
gpiod_set_value(desc, 1);          active low             low
gpiod_set_value(desc, 0);          open drain             low
gpiod_set_value(desc, 1);          open drain             high impedance
gpiod_set_value(desc, 0);          open source            high impedance
gpiod_set_value(desc, 1);          open source            high”h]”hXÍ  Function (example)                 line property          physical line
gpiod_set_raw_value(desc, 0);      don't care             low
gpiod_set_raw_value(desc, 1);      don't care             high
gpiod_set_value(desc, 0);          default (active high)  low
gpiod_set_value(desc, 1);          default (active high)  high
gpiod_set_value(desc, 0);          active low             high
gpiod_set_value(desc, 1);          active low             low
gpiod_set_value(desc, 0);          open drain             low
gpiod_set_value(desc, 1);          open drain             high impedance
gpiod_set_value(desc, 0);          open source            high impedance
gpiod_set_value(desc, 1);          open source            high”…””}”hj  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Mhj¤  h²hubhÌ)”}”(hX  It is possible to override these semantics using the set_raw/get_raw functions
but it should be avoided as much as possible, especially by system-agnostic drivers
which should not need to care about the actual physical line level and worry about
the logical value instead.”h]”hX  It is possible to override these semantics using the set_raw/get_raw functions
but it should be avoided as much as possible, especially by system-agnostic drivers
which should not need to care about the actual physical line level and worry about
the logical value instead.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M+hj¤  h²hubeh}”(h]”(Œ'the-active-low-and-open-drain-semantics”j›  eh ]”h"]”(Œ'the active low and open drain semantics”Œactive_low_semantics”eh$]”h&]”uh1hµhj  h²hh³hÊh´MŒexpect_referenced_by_name”}”j/  j  sŒexpect_referenced_by_id”}”j›  j  subh¶)”}”(hhh]”(h»)”}”(hŒAccessing raw GPIO values”h]”hŒAccessing raw GPIO values”…””}”(hj9  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj6  h²hh³hÊh´M2ubhÌ)”}”(hŒªConsumers exist that need to manage the logical state of a GPIO line, i.e. the value
their device will actually receive, no matter what lies between it and the GPIO
line.”h]”hŒªConsumers exist that need to manage the logical state of a GPIO line, i.e. the value
their device will actually receive, no matter what lies between it and the GPIO
line.”…””}”(hjG  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M3hj6  h²hubhÌ)”}”(hŒrThe following set of calls ignore the active-low or open drain property of a GPIO and
work on the raw line value::”h]”hŒqThe following set of calls ignore the active-low or open drain property of a GPIO and
work on the raw line value:”…””}”(hjU  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M7hj6  h²hubhû)”}”(hX7  int gpiod_get_raw_value(const struct gpio_desc *desc)
void gpiod_set_raw_value(struct gpio_desc *desc, int value)
int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc)
void gpiod_set_raw_value_cansleep(struct gpio_desc *desc, int value)
int gpiod_direction_output_raw(struct gpio_desc *desc, int value)”h]”hX7  int gpiod_get_raw_value(const struct gpio_desc *desc)
void gpiod_set_raw_value(struct gpio_desc *desc, int value)
int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc)
void gpiod_set_raw_value_cansleep(struct gpio_desc *desc, int value)
int gpiod_direction_output_raw(struct gpio_desc *desc, int value)”…””}”hjc  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´M:hj6  h²hubhÌ)”}”(hŒZThe active low state of a GPIO can also be queried and toggled using the
following calls::”h]”hŒYThe active low state of a GPIO can also be queried and toggled using the
following calls:”…””}”(hjq  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M@hj6  h²hubhû)”}”(hŒjint gpiod_is_active_low(const struct gpio_desc *desc)
void gpiod_toggle_active_low(struct gpio_desc *desc)”h]”hŒjint gpiod_is_active_low(const struct gpio_desc *desc)
void gpiod_toggle_active_low(struct gpio_desc *desc)”…””}”hj  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´MChj6  h²hubhÌ)”}”(hŒœNote that these functions should only be used with great moderation; a driver
should not have to care about the physical line level or open drain semantics.”h]”hŒœNote that these functions should only be used with great moderation; a driver
should not have to care about the physical line level or open drain semantics.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MFhj6  h²hubeh}”(h]”Œaccessing-raw-gpio-values”ah ]”h"]”Œaccessing raw gpio values”ah$]”h&]”uh1hµhj  h²hh³hÊh´M2ubh¶)”}”(hhh]”(h»)”}”(hŒ1Access multiple GPIOs with a single function call”h]”hŒ1Access multiple GPIOs with a single function call”…””}”(hj¦  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj£  h²hh³hÊh´MKubhÌ)”}”(hŒDThe following functions get or set the values of an array of GPIOs::”h]”hŒCThe following functions get or set the values of an array of GPIOs:”…””}”(hj´  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MLhj£  h²hubhû)”}”(hX¨  int gpiod_get_array_value(unsigned int array_size,
                          struct gpio_desc **desc_array,
                          struct gpio_array *array_info,
                          unsigned long *value_bitmap);
int gpiod_get_raw_array_value(unsigned int array_size,
                              struct gpio_desc **desc_array,
                              struct gpio_array *array_info,
                              unsigned long *value_bitmap);
int gpiod_get_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap);
int gpiod_get_raw_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap);

int gpiod_set_array_value(unsigned int array_size,
                          struct gpio_desc **desc_array,
                          struct gpio_array *array_info,
                          unsigned long *value_bitmap)
int gpiod_set_raw_array_value(unsigned int array_size,
                              struct gpio_desc **desc_array,
                              struct gpio_array *array_info,
                              unsigned long *value_bitmap)
int gpiod_set_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap)
int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
                                       struct gpio_desc **desc_array,
                                       struct gpio_array *array_info,
                                       unsigned long *value_bitmap)”h]”hX¨  int gpiod_get_array_value(unsigned int array_size,
                          struct gpio_desc **desc_array,
                          struct gpio_array *array_info,
                          unsigned long *value_bitmap);
int gpiod_get_raw_array_value(unsigned int array_size,
                              struct gpio_desc **desc_array,
                              struct gpio_array *array_info,
                              unsigned long *value_bitmap);
int gpiod_get_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap);
int gpiod_get_raw_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap);

int gpiod_set_array_value(unsigned int array_size,
                          struct gpio_desc **desc_array,
                          struct gpio_array *array_info,
                          unsigned long *value_bitmap)
int gpiod_set_raw_array_value(unsigned int array_size,
                              struct gpio_desc **desc_array,
                              struct gpio_array *array_info,
                              unsigned long *value_bitmap)
int gpiod_set_array_value_cansleep(unsigned int array_size,
                                   struct gpio_desc **desc_array,
                                   struct gpio_array *array_info,
                                   unsigned long *value_bitmap)
int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
                                       struct gpio_desc **desc_array,
                                       struct gpio_array *array_info,
                                       unsigned long *value_bitmap)”…””}”hjÂ  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´MNhj£  h²hubhÌ)”}”(hXF  The array can be an arbitrary set of GPIOs. The functions will try to access
GPIOs belonging to the same bank or chip simultaneously if supported by the
corresponding chip driver. In that case a significantly improved performance
can be expected. If simultaneous access is not possible the GPIOs will be
accessed sequentially.”h]”hXF  The array can be an arbitrary set of GPIOs. The functions will try to access
GPIOs belonging to the same bank or chip simultaneously if supported by the
corresponding chip driver. In that case a significantly improved performance
can be expected. If simultaneous access is not possible the GPIOs will be
accessed sequentially.”…””}”(hjÐ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mphj£  h²hubhÌ)”}”(hŒ"The functions take four arguments:”h]”hŒ"The functions take four arguments:”…””}”(hjÞ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mvhj£  h²hubhŒblock_quote”“”)”}”(hX  * array_size    - the number of array elements
* desc_array    - an array of GPIO descriptors
* array_info    - optional information obtained from gpiod_get_array()
* value_bitmap  - a bitmap to store the GPIOs' values (get) or
  a bitmap of values to assign to the GPIOs (set)
”h]”j  )”}”(hhh]”(j   )”}”(hŒ,array_size    - the number of array elements”h]”hÌ)”}”(hj÷  h]”hŒ,array_size    - the number of array elements”…””}”(hjù  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mxhjõ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjò  ubj   )”}”(hŒ,desc_array    - an array of GPIO descriptors”h]”hÌ)”}”(hj  h]”hŒ,desc_array    - an array of GPIO descriptors”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Myhj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjò  ubj   )”}”(hŒDarray_info    - optional information obtained from gpiod_get_array()”h]”hÌ)”}”(hj%  h]”hŒDarray_info    - optional information obtained from gpiod_get_array()”…””}”(hj'  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mzhj#  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjò  ubj   )”}”(hŒmvalue_bitmap  - a bitmap to store the GPIOs' values (get) or
a bitmap of values to assign to the GPIOs (set)
”h]”hÌ)”}”(hŒlvalue_bitmap  - a bitmap to store the GPIOs' values (get) or
a bitmap of values to assign to the GPIOs (set)”h]”hŒnvalue_bitmap  - a bitmap to store the GPIOsâ€™ values (get) or
a bitmap of values to assign to the GPIOs (set)”…””}”(hj>  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M{hj:  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjò  ubeh}”(h]”h ]”h"]”h$]”h&]”j  j¶  uh1j  h³hÊh´Mxhjî  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jì  h³hÊh´Mxhj£  h²hubhÌ)”}”(hX  The descriptor array can be obtained using the gpiod_get_array() function
or one of its variants. If the group of descriptors returned by that function
matches the desired group of GPIOs, those GPIOs can be accessed by simply using
the struct gpio_descs returned by gpiod_get_array()::”h]”hX  The descriptor array can be obtained using the gpiod_get_array() function
or one of its variants. If the group of descriptors returned by that function
matches the desired group of GPIOs, those GPIOs can be accessed by simply using
the struct gpio_descs returned by gpiod_get_array():”…””}”(hj^  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M~hj£  h²hubhû)”}”(hŒ¼struct gpio_descs *my_gpio_descs = gpiod_get_array(...);
gpiod_set_array_value(my_gpio_descs->ndescs, my_gpio_descs->desc,
                      my_gpio_descs->info, my_gpio_value_bitmap);”h]”hŒ¼struct gpio_descs *my_gpio_descs = gpiod_get_array(...);
gpiod_set_array_value(my_gpio_descs->ndescs, my_gpio_descs->desc,
                      my_gpio_descs->info, my_gpio_value_bitmap);”…””}”hjl  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´Mƒhj£  h²hubhÌ)”}”(hXK  It is also possible to access a completely arbitrary array of descriptors. The
descriptors may be obtained using any combination of gpiod_get() and
gpiod_get_array(). Afterwards the array of descriptors has to be setup
manually before it can be passed to one of the above functions.  In that case,
array_info should be set to NULL.”h]”hXK  It is also possible to access a completely arbitrary array of descriptors. The
descriptors may be obtained using any combination of gpiod_get() and
gpiod_get_array(). Afterwards the array of descriptors has to be setup
manually before it can be passed to one of the above functions.  In that case,
array_info should be set to NULL.”…””}”(hjz  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M‡hj£  h²hubhÌ)”}”(hŒxNote that for optimal performance GPIOs belonging to the same chip should be
contiguous within the array of descriptors.”h]”hŒxNote that for optimal performance GPIOs belonging to the same chip should be
contiguous within the array of descriptors.”…””}”(hjˆ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj£  h²hubhÌ)”}”(hX  Still better performance may be achieved if array indexes of the descriptors
match hardware pin numbers of a single chip.  If an array passed to a get/set
array function matches the one obtained from gpiod_get_array() and array_info
associated with the array is also passed, the function may take a fast bitmap
processing path, passing the value_bitmap argument directly to the respective
.get/set_multiple() callback of the chip.  That allows for utilization of GPIO
banks as data I/O ports without much loss of performance.”h]”hX  Still better performance may be achieved if array indexes of the descriptors
match hardware pin numbers of a single chip.  If an array passed to a get/set
array function matches the one obtained from gpiod_get_array() and array_info
associated with the array is also passed, the function may take a fast bitmap
processing path, passing the value_bitmap argument directly to the respective
.get/set_multiple() callback of the chip.  That allows for utilization of GPIO
banks as data I/O ports without much loss of performance.”…””}”(hj–  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mhj£  h²hubhÌ)”}”(hX3  The return value of gpiod_get_array_value() and its variants is 0 on success
or negative on error. Note the difference to gpiod_get_value(), which returns
0 or 1 on success to convey the GPIO value. With the array functions, the GPIO
values are stored in value_array rather than passed back as return value.”h]”hX3  The return value of gpiod_get_array_value() and its variants is 0 on success
or negative on error. Note the difference to gpiod_get_value(), which returns
0 or 1 on success to convey the GPIO value. With the array functions, the GPIO
values are stored in value_array rather than passed back as return value.”…””}”(hj¤  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M˜hj£  h²hubeh}”(h]”Œ1access-multiple-gpios-with-a-single-function-call”ah ]”h"]”Œ1access multiple gpios with a single function call”ah$]”h&]”uh1hµhj  h²hh³hÊh´MKubh¶)”}”(hhh]”(h»)”}”(hŒGPIOs mapped to IRQs”h]”hŒGPIOs mapped to IRQs”…””}”(hj½  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhjº  h²hh³hÊh´MŸubhÌ)”}”(hŒGPIO lines can quite often be used as IRQs. You can get the IRQ number
corresponding to a given GPIO using the following call::”h]”hŒ~GPIO lines can quite often be used as IRQs. You can get the IRQ number
corresponding to a given GPIO using the following call:”…””}”(hjË  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M hjº  h²hubhû)”}”(hŒ.int gpiod_to_irq(const struct gpio_desc *desc)”h]”hŒ.int gpiod_to_irq(const struct gpio_desc *desc)”…””}”hjÙ  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´M£hjº  h²hubhÌ)”}”(hXk  It will return an IRQ number, or a negative errno code if the mapping can't be
done (most likely because that particular GPIO cannot be used as IRQ). It is an
unchecked error to use a GPIO that wasn't set up as an input using
gpiod_direction_input(), or to use an IRQ number that didn't originally come
from gpiod_to_irq(). gpiod_to_irq() is not allowed to sleep.”h]”hXq  It will return an IRQ number, or a negative errno code if the mapping canâ€™t be
done (most likely because that particular GPIO cannot be used as IRQ). It is an
unchecked error to use a GPIO that wasnâ€™t set up as an input using
gpiod_direction_input(), or to use an IRQ number that didnâ€™t originally come
from gpiod_to_irq(). gpiod_to_irq() is not allowed to sleep.”…””}”(hjç  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M¥hjº  h²hubhÌ)”}”(hXD  Non-error values returned from gpiod_to_irq() can be passed to request_irq() or
free_irq(). They will often be stored into IRQ resources for platform devices,
by the board-specific initialization code. Note that IRQ trigger options are
part of the IRQ interface, e.g. IRQF_TRIGGER_FALLING, as are system wakeup
capabilities.”h]”hXD  Non-error values returned from gpiod_to_irq() can be passed to request_irq() or
free_irq(). They will often be stored into IRQ resources for platform devices,
by the board-specific initialization code. Note that IRQ trigger options are
part of the IRQ interface, e.g. IRQF_TRIGGER_FALLING, as are system wakeup
capabilities.”…””}”(hjõ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´M«hjº  h²hubeh}”(h]”Œgpios-mapped-to-irqs”ah ]”h"]”Œgpios mapped to irqs”ah$]”h&]”uh1hµhj  h²hh³hÊh´MŸubeh}”(h]”Œusing-gpios”ah ]”h"]”Œusing gpios”ah$]”h&]”uh1hµhh·h²hh³hÊh´Kµubh¶)”}”(hhh]”(h»)”}”(hŒGPIOs and ACPI”h]”hŒGPIOs and ACPI”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj  h²hh³hÊh´M³ubhÌ)”}”(hŒÿOn ACPI systems, GPIOs are described by GpioIo()/GpioInt() resources listed by
the _CRS configuration objects of devices.  Those resources do not provide
connection IDs (names) for GPIOs, so it is necessary to use an additional
mechanism for this purpose.”h]”hŒÿOn ACPI systems, GPIOs are described by GpioIo()/GpioInt() resources listed by
the _CRS configuration objects of devices.  Those resources do not provide
connection IDs (names) for GPIOs, so it is necessary to use an additional
mechanism for this purpose.”…””}”(hj$  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mµhj  h²hubhÌ)”}”(hXÀ  Systems compliant with ACPI 5.1 or newer may provide a _DSD configuration object
which, among other things, may be used to provide connection IDs for specific
GPIOs described by the GpioIo()/GpioInt() resources in _CRS.  If that is the
case, it will be handled by the GPIO subsystem automatically.  However, if the
_DSD is not present, the mappings between GpioIo()/GpioInt() resources and GPIO
connection IDs need to be provided by device drivers.”h]”hXÀ  Systems compliant with ACPI 5.1 or newer may provide a _DSD configuration object
which, among other things, may be used to provide connection IDs for specific
GPIOs described by the GpioIo()/GpioInt() resources in _CRS.  If that is the
case, it will be handled by the GPIO subsystem automatically.  However, if the
_DSD is not present, the mappings between GpioIo()/GpioInt() resources and GPIO
connection IDs need to be provided by device drivers.”…””}”(hj2  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Mºhj  h²hubhÌ)”}”(hŒJFor details refer to Documentation/firmware-guide/acpi/gpio-properties.rst”h]”hŒJFor details refer to Documentation/firmware-guide/acpi/gpio-properties.rst”…””}”(hj@  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MÁhj  h²hubeh}”(h]”Œgpios-and-acpi”ah ]”h"]”Œgpios and acpi”ah$]”h&]”uh1hµhh·h²hh³hÊh´M³ubh¶)”}”(hhh]”(h»)”}”(hŒ*Interacting With the Legacy GPIO Subsystem”h]”hŒ*Interacting With the Legacy GPIO Subsystem”…””}”(hjY  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhjV  h²hh³hÊh´MÅubhÌ)”}”(hXG  Many kernel subsystems and drivers still handle GPIOs using the legacy
integer-based interface. It is strongly recommended to update these to the new
gpiod interface. For cases where both interfaces need to be used, the following
two functions allow to convert a GPIO descriptor into the GPIO integer namespace
and vice-versa::”h]”hXF  Many kernel subsystems and drivers still handle GPIOs using the legacy
integer-based interface. It is strongly recommended to update these to the new
gpiod interface. For cases where both interfaces need to be used, the following
two functions allow to convert a GPIO descriptor into the GPIO integer namespace
and vice-versa:”…””}”(hjg  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MÆhjV  h²hubhû)”}”(hŒ\int desc_to_gpio(const struct gpio_desc *desc)
struct gpio_desc *gpio_to_desc(unsigned gpio)”h]”hŒ\int desc_to_gpio(const struct gpio_desc *desc)
struct gpio_desc *gpio_to_desc(unsigned gpio)”…””}”hju  sbah}”(h]”h ]”h"]”h$]”h&]”j
  j  uh1húh³hÊh´MÌhjV  h²hubhÌ)”}”(hXƒ  The GPIO number returned by desc_to_gpio() can safely be used as a parameter of
the gpio\_*() functions for as long as the GPIO descriptor `desc` is not freed.
All the same, a GPIO number passed to gpio_to_desc() must first be properly
acquired using e.g. gpio_request_one(), and the returned GPIO descriptor is only
considered valid until that GPIO number is released using gpio_free().”h]”(hŒ‹The GPIO number returned by desc_to_gpio() can safely be used as a parameter of
the gpio _*() functions for as long as the GPIO descriptor ”…””}”(hjƒ  h²hh³Nh´NubhŒtitle_reference”“”)”}”(hŒ`desc`”h]”hŒdesc”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‹  hjƒ  ubhŒò is not freed.
All the same, a GPIO number passed to gpio_to_desc() must first be properly
acquired using e.g. gpio_request_one(), and the returned GPIO descriptor is only
considered valid until that GPIO number is released using gpio_free().”…””}”(hjƒ  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MÏhjV  h²hubhÌ)”}”(hŒZFreeing a GPIO obtained by one API with the other API is forbidden and an
unchecked error.”h]”hŒZFreeing a GPIO obtained by one API with the other API is forbidden and an
unchecked error.”…””}”(hj¥  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´MÕhjV  h²hubeh}”(h]”Œ*interacting-with-the-legacy-gpio-subsystem”ah ]”h"]”Œ*interacting with the legacy gpio subsystem”ah$]”h&]”uh1hµhh·h²hh³hÊh´MÅubeh}”(h]”Œ"gpio-descriptor-consumer-interface”ah ]”h"]”Œ"gpio descriptor consumer interface”ah$]”h&]”uh1hµhhh²hh³hÊh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÊuh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(hºNŒ	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”jæ  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”hÊŒ_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”}”j›  ]”j  asŒnameids”}”(jÀ  j½  j¸  jµ  j  j  j  j  j¹  j¶  j  j  j¡  jž  j/  j›  j.  j+  j   j  j·  j´  j  j  jS  jP  j¸  jµ  uŒ	nametypes”}”(jÀ  ‰j¸  ‰j  ‰j  ‰j¹  ‰j  ‰j¡  ‰j/  ˆj.  ‰j   ‰j·  ‰j  ‰jS  ‰j¸  ‰uh}”(j½  h·jµ  hÛj  j»  j  j  j¶  j#  j  j¼  jž  j  j›  j¤  j+  j¤  j  j6  j´  j£  j  jº  jP  j  jµ  jV  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”]”hŒsystem_message”“”)”}”(hhh]”hÌ)”}”(hhh]”hŒ:Hyperlink target "active-low-semantics" is not referenced.”…””}”hjP	  sbah}”(h]”h ]”h"]”h$]”h&]”uh1hËhjM	  ubah}”(h]”h ]”h"]”h$]”h&]”Œlevel”KŒtype”ŒINFO”Œsource”hÊŒline”Muh1jK	  ubaŒtransformer”NŒinclude_log”]”Œ
decoration”Nh²hub.