Searched +full:quasi +full:- +full:bidirectional (Results 1 – 3 of 3) sorted by relevance
1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)3 ---5 $schema: http://devicetree.org/meta-schemas/core.yaml#7 title: PCF857x-compatible I/O expanders10 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>13 The PCF857x-compatible chips have "quasi-bidirectional" I/O lines that can be14 driven high by a pull-up current source or driven low to ground. This25 - maxim,max732826 - maxim,max732927 - nxp,pca8574[all …]
1 // SPDX-License-Identifier: GPL-2.0-or-later61 * that pin be used as an input; it's not an open-drain model, but acts62 * a bit like one. This is described as "quasi-bidirectional"; read the82 /*-------------------------------------------------------------------------*/84 /* Talk to 8-bit I/O expander */96 /* Talk to 16-bit I/O expander */118 /*-------------------------------------------------------------------------*/125 mutex_lock(&gpio->lock); in pcf857x_input()126 gpio->out |= (1 << offset); in pcf857x_input()127 status = gpio->write(gpio->client, gpio->out); in pcf857x_input()[all …]
1 # SPDX-License-Identifier: GPL-2.0-only60 non-sleeping contexts. They can make bitbanged serial protocols81 numberspace-based functionalities of the sysfs interface.137 Enables support for the idio-16 library functions. The idio-16 library139 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.141 If built as a module its name will be gpio-idio-16.147 tristate "GPIO driver for 74xx-ICs with MMIO access"151 Say yes here to support GPIO functionality for 74xx-compatible ICs166 If driver is built as a module it will be called gpio-altera.341 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"[all …]