Lines Matching +full:string +full:- +full:array +full:- +full:property
14 -----------
19 GPIOs mappings are defined in the consumer device's node, in a property named
20 <function>-gpios, where <function> is the function the driver will request
26 led-gpios = <&gpio 15 GPIO_ACTIVE_HIGH>, /* red */
30 power-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
33 Properties named <function>-gpio are also considered valid and old bindings use
37 This property will make GPIOs 15, 16 and 17 available to the driver under the
51 The second parameter of the gpiod_get() functions, the con_id string, has to be
52 the <function>-prefix of the GPIO suffixes ("gpios" or "gpio", automatically
54 "led-gpios" example, use the prefix without the "-" as con_id parameter: "led".
57 with the string passed in con_id to get the resulting string
58 (``snprintf(... "%s-%s", con_id, gpio_suffixes[]``).
61 ----
79 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
82 "led-gpios",
89 Package () { "power-gpios", Package () { ^FOO, 3, 0, 0 } },
95 Documentation/firmware-guide/acpi/gpio-properties.rst.
98 -------------
112 - key is either the label of the gpiod_chip instance providing the GPIO, or
114 - chip_hwnum is the hardware number of the GPIO within the chip, or U16_MAX
116 - con_id is the name of the GPIO function from the device point of view. It
118 - idx is the index of the GPIO within the function.
119 - flags is defined to specify the following properties:
120 * GPIO_ACTIVE_HIGH - GPIO line is active high
121 * GPIO_ACTIVE_LOW - GPIO line is active low
122 * GPIO_OPEN_DRAIN - GPIO line is set up as open drain
123 * GPIO_OPEN_SOURCE - GPIO line is set up as open source
124 * GPIO_PERSISTENT - GPIO line is persistent during
126 * GPIO_TRANSITORY - GPIO line is transitory and may loose its
141 .. code-block:: c
168 Since the "led" GPIOs are mapped as active-high, this example will switch their
170 as active-low, its actual signal will be 0 after this code. Contrary to the
171 legacy integer GPIO interface, the active-low property is handled during
175 the new descriptor-oriented interface.
179 .. code-block:: c
190 The line will be hogged as soon as the gpiochip is created or - in case the
191 chip was created earlier - when the hog table is registered.
194 --------------
196 also request an array of pins assigned to the function. The way those pins are
197 mapped to the device determines if the array qualifies for fast bitmap
198 processing. If yes, a bitmap is passed over get/set array functions directly
201 In order to qualify for fast bitmap processing, the array must meet the
204 - pin hardware number of array member 0 must also be 0,
205 - pin hardware numbers of consecutive array members which belong to the same
206 chip as member 0 does must also match their array indexes.
212 If the array applies for fast bitmap processing path, pins which belong to