Lines Matching refs:that

4 This document describes the consumer interface of the GPIO framework. Note that
12 Drivers that can't work without standard GPIO calls should have Kconfig entries
13 that depend on GPIOLIB. The functions that allow a driver to obtain and use
18 All the functions that work with the descriptor-based GPIO interface are
27 non-forgeable handler that must be obtained through a call to one of the
29 device that will use the GPIO and the function the requested GPIO is supposed to
36 device that displays digits), an additional index argument can be specified:
167 Be aware that there is no default direction for GPIOs. Therefore, **using a GPIO
189 reported earlier from gpiod_direction_*(). However, note that not all platforms
190 can read the value of output pins; those that can't should always return zero.
191 Also, using these calls for GPIOs that can't safely be accessed without sleeping
202 Platforms that support this type of GPIO distinguish them from other GPIOs by
216 Other than the fact that these accessors might sleep, and will work on GPIOs
217 that can't be accessed from hardIRQ handlers, these calls act the same as the
239 Note that these functions should only be used with great moderation ; a driver
249 This means that they check whether the GPIO is configured to be active-low,
271 Please note again that the set_raw/get_raw functions should be avoided as much
295 corresponding chip driver. In that case a significantly improved performance
305 or one of its variants. If the group of descriptors returned by that function
318 Note that for optimal performance GPIOs belonging to the same chip should be
330 done (most likely because that particular GPIO cannot be used as IRQ). It is an
331 unchecked error to use a GPIO that wasn't set up as an input using
332 gpiod_direction_input(), or to use an IRQ number that didn't originally come
337 by the board-specific initialization code. Note that IRQ trigger options are
352 GPIOs described by the GpioIo()/GpioInt() resources in _CRS.  If that is the