| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | adi,ad7606.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
14 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7605-4.pdf
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
22 - adi,ad7605-4
23 - adi,ad7606-4
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| /linux/drivers/bus/ |
| H A D | ts-nbus.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * NBUS driver for TS-4600 based boards
5 * Copyright (c) 2016 - Savoir-faire Linux
8 * This driver implements a GPIOs bit-banged bus, called the NBUS by Technologic
10 * TS-4600 SoM.
21 #include <linux/ts-nbus.h>
30 struct gpio_descs *data; member
40 * request all gpios required by the bus.
45 ts_nbus->data = devm_gpiod_get_array(&pdev->dev, "ts,data", in ts_nbus_init_pdata()
47 if (IS_ERR(ts_nbus->data)) in ts_nbus_init_pdata()
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| /linux/Documentation/devicetree/bindings/gpio/ |
| H A D | gpio.txt | 4 1) gpios property
5 -----------------
7 GPIO properties should be named "[<name>-]gpios", with <name> being the purpose
8 of this GPIO for the device. While a non-existent <name> is considered valid
9 for compatibility reasons (resolving to the "gpios" property), it is not allowed
10 for new bindings. Also, GPIO properties named "[<name>-]gpio" are valid and old
15 cases should they contain more than one. If your device uses several GPIOs with
17 meaningful name. The only case where an array of GPIOs is accepted is when
18 several GPIOs serve the same function (e.g. a parallel data line).
20 The exact purpose of each gpios property must be documented in the device tree
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| H A D | nvidia,tegra186-gpio.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/nvidia,tegra186-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
33 GPIO data does not need access to these registers.
41 Tegra HW documentation describes a unified naming convention for all GPIOs
43 control a number of GPIOs. Thus, each GPIO is named according to an
48 of implemented GPIOs within each port varies. GPIO registers within a
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| /linux/Documentation/devicetree/bindings/display/bridge/ |
| H A D | thine,thc63lvd1024.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacopo Mondi <jacopo+renesas@jmondi.org>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
15 streams to parallel data outputs. The chip supports single/dual input/output
19 Single or dual operation mode, output data mapping and DDR output modes are
34 even-numbered pixels are received on port@0 and odd-numbered pixels on
37 When operating in single output mode all pixels are output from the first
45 description: First LVDS input port
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| H A D | ti,sn65dsi86.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Douglas Anderson <dianders@chromium.org>
23 enable-gpios:
27 suspend-gpios:
31 no-hpd:
37 vccio-supply:
40 vpll-supply:
43 vcca-supply:
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| H A D | sil,sii9022.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Boris Brezillon <bbrezillon@kernel.org>
15 - items:
16 - enum:
17 - sil,sii9022-cpi # CEC Programming Interface
18 - sil,sii9022-tpi # Transmitter Programming Interface
19 - const: sil,sii9022
20 - const: sil,sii9022
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| /linux/include/linux/gpio/ |
| H A D | driver.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
12 #include <linux/pinctrl/pinconf-generic.h>
48 * struct gpio_irq_chip - GPIO interrupt controller
78 * If non-NULL, will be set as the parent of this GPIO interrupt
90 * hardware IRQs correspond to the GPIO index 0..ngpio-1 (see the
98 * HWIRQ, return -EINVAL, but also make sure to fill in @valid_mask and
113 * &gpiochip_populate_parent_fwspec_twocell will be used. A four-cell
187 * single pointer used as the data associated with every
197 * different data for each parent. This cannot be NULL if
236 * sized array to be used as parent data.
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| /linux/drivers/gpio/ |
| H A D | gpio-sloppy-logic-analyzer.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Sloppy logic analyzer using GPIOs (to be run on an isolated CPU)
5 * Use the 'gpio-sloppy-logic-analyzer' script in the 'tools/gpio' folder for
7 * analyzer which can be affected by latencies and non-deterministic code
8 * paths. However, for e.g. remote development, it may be useful to get a first
11 * Copyright (C) Wolfram Sang <wsa@sang-engineering.com>
34 #define GPIO_LA_NAME "gpio-sloppy-logic-analyzer"
41 struct mutex blob_lock; /* serialize access to the blob (data) */
61 ret = gpiod_get_array_value(d->ndescs, d->desc, d->info, sptr); in gpio_la_get_array()
63 ret = -EINTR; in gpio_la_get_array()
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| H A D | gpio-syscon.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
20 /* SYSCON driver is designed to use 32-bit wide registers */
25 * struct syscon_gpio_data - Configuration for the device.
27 * GPIO_SYSCON_FEAT_IN: GPIOs supports input,
28 * GPIO_SYSCON_FEAT_OUT: GPIOs supports output,
29 * GPIO_SYSCON_FEAT_DIR: GPIOs supports switch direction.
30 * @bit_count: Number of bits used as GPIOs.
31 * @dat_bit_offset: Offset (in bits) to the first GPIO bit.
32 * @dir_bit_offset: Optional offset (in bits) to the first bit to switch
50 const struct syscon_gpio_data *data; member
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| H A D | gpiolib-acpi.c | 1 // SPDX-License-Identifier: GPL-2.0
24 #include "gpiolib-acpi.h"
26 static int run_edge_events_on_boot = -1;
29 "Run edge _AEI event-handlers at boot: 0=no, 1=yes, -1=auto");
50 * struct acpi_gpio_event - ACPI GPIO event handler data
52 * @node: list-entry of the events list of the struct acpi_gpio_chip
82 * ACPICA requires that the first field of the context parameter
95 * struct acpi_gpio_info - ACPI GPIO specific information
129 static int acpi_gpiochip_find(struct gpio_chip *gc, const void *data) in acpi_gpiochip_find() argument
131 /* First check the actual GPIO device */ in acpi_gpiochip_find()
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| H A D | gpio-twl4030.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Access to GPIOs on TWL4030/TPS659x0 chips
5 * Copyright (C) 2006-2007 Texas Instruments, Inc.
8 * Code re-arranged and cleaned up by:
30 * The GPIO "subchip" supports 18 GPIOs which can be configured as
37 * There are also two LED pins used sometimes as output-only GPIOs.
52 /* Mask for GPIO registers when aggregated into a 32-bit integer */
66 /*----------------------------------------------------------------------*/
71 static inline int gpio_twl4030_write(u8 address, u8 data) in gpio_twl4030_write() argument
73 return twl_i2c_write_u8(TWL4030_MODULE_GPIO, data, address); in gpio_twl4030_write()
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| H A D | gpiolib.c | 1 // SPDX-License-Identifier: GPL-2.0
36 #include "gpiolib-acpi.h"
37 #include "gpiolib-cdev.h"
38 #include "gpiolib-of.h"
39 #include "gpiolib-swnode.h"
40 #include "gpiolib-sysfs.h"
48 * The GPIO programming interface allows for inlining speed-critical
49 * get/set operations for common cases, so that access to SOC-integrated
50 * GPIOs can sometimes cost only an instruction or two per bit.
53 /* Device and char device-related information */
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| H A D | gpio-ich.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Intel ICH6-10, Series 5 and 6, Atom C2000 (Avoton/Rangeley) GPIO driver
19 * Each chunk of 32 GPIOs is manipulated via its own USE_SELx, IO_SELx, and
34 {0x00, 0x30, 0x40}, /* USE_SEL[1-3] offsets */
35 {0x04, 0x34, 0x44}, /* IO_SEL[1-3] offsets */
36 {0x0c, 0x38, 0x48}, /* LVL[1-3] offsets */
54 #define ICHX_WRITE(val, reg, base_res) outl(val, (reg) + (base_res)->start)
55 #define ICHX_READ(reg, base_res) inl((reg) + (base_res)->start)
91 struct ichx_desc *desc; /* Pointer to chipset-specific description */
97 static int modparam_gpiobase = -1; /* dynamic */
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| /linux/Documentation/driver-api/gpio/ |
| H A D | board.rst | 5 This document explains how GPIOs can be assigned to given devices and functions.
9 Kconfig. Then, how GPIOs are mapped depends on what the platform uses to
11 tree, ACPI, and platform data.
14 -----------
15 GPIOs can easily be mapped to devices and functions in the device tree. The
16 exact way to do it depends on the GPIO controller providing the GPIOs, see the
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>;
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| H A D | consumer.rst | 8 Guidelines for GPIOs consumers
13 obtain and use GPIOs are available by including the following file::
21 - Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
25 - Truly optional GPIOLIB support - where the driver does not really make use
26 of the GPIOs on certain compile-time configurations for certain systems, but
27 will use it under other compile-time configurations. In this case the
35 All the functions that work with the descriptor-based GPIO interface are
42 Obtaining and Disposing GPIOs
45 With the descriptor-based interface, GPIOs are identified with an opaque,
46 non-forgeable handler that must be obtained through a call to one of the
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| /linux/Documentation/devicetree/bindings/mmc/ |
| H A D | arm,pl18x.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Linus Walleij <linus.walleij@linaro.org>
11 - Ulf Hansson <ulf.hansson@linaro.org>
20 - $ref: /schemas/arm/primecell.yaml#
21 - $ref: mmc-controller.yaml#
29 - arm,pl180
30 - arm,pl181
31 - arm,pl18x
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| /linux/Documentation/userspace-api/gpio/ |
| H A D | sysfs.rst | 6 been moved to Documentation/ABI/obsolete/sysfs-gpio.
16 ----------------------
18 configure a sysfs user interface to GPIOs. This is different from the
26 may need to temporarily remove that protection, first importing a GPIO,
27 then changing its output state, then updating the code before re-enabling
32 userspace GPIO can be used to determine system configuration data that
38 Please read Documentation/driver-api/gpio/drivers-on-gpio.rst
44 --------------
47 - Control interfaces used to get userspace control over GPIOs;
49 - GPIOs themselves; and
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| /linux/Documentation/firmware-guide/acpi/ |
| H A D | gpio-properties.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 allows names to be given to GPIOs (and other things as well) returned
13 With _DSD we can now query GPIOs using a name instead of an integer
16 // Bluetooth device with reset and shutdown GPIOs
31 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
34 Package () { "reset-gpios", Package () { ^BTH, 1, 1, 0 } },
35 Package () { "shutdown-gpios", Package () { ^BTH, 0, 0, 0 } },
61 In our Bluetooth example the "reset-gpios" refers to the second GpioIo()
70 +-------------+-------------+-----------------------------------------------+
74 +-------------+-------------+-----------------------------------------------+
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| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | google,cros-ec.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mfd/google,cros-ec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Benson Leung <bleung@chromium.org>
11 - Guenter Roeck <groeck@chromium.org>
22 - description:
24 const: google,cros-ec-i2c
25 - description:
27 const: google,cros-ec-spi
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| /linux/drivers/pinctrl/renesas/ |
| H A D | gpio.c | 1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 2009 - 2012 Paul Mundt
40 return chip->pfc; in gpio_to_pfc()
47 int idx = sh_pfc_get_pin_index(chip->pfc, offset); in gpio_get_data_reg()
48 struct sh_pfc_gpio_pin *gpio_pin = &chip->pins[idx]; in gpio_get_data_reg()
50 *reg = &chip->regs[gpio_pin->dreg]; in gpio_get_data_reg()
51 *bit = gpio_pin->dbit; in gpio_get_data_reg()
57 phys_addr_t address = dreg->reg; in gpio_read_data_reg()
58 void __iomem *mem = address - chip->mem->phys + chip->mem->virt; in gpio_read_data_reg()
60 return sh_pfc_read_raw_reg(mem, dreg->reg_width); in gpio_read_data_reg()
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| /linux/Documentation/devicetree/bindings/media/i2c/ |
| H A D | thine,thp7312.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Paul Elder <paul.elder@@ideasonboard.com>
17 MIPI CSI-2 and parallel interfaces. It can also output on either MIPI CSI-2
19 interleaved data streams with data types or multiple virtual channel
23 - $ref: /schemas/media/video-interface-devices.yaml#
36 thine,boot-mode:
43 0 is for the SPI/2-wire slave boot, 1 is for the SPI master boot (from
46 reset-gpios:
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| H A D | maxim,max96712.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Quad GMSL2 to CSI-2 Deserializer with GMSL1 Compatibility
11 - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
15 CSI-2 D-PHY or C-PHY formatted outputs. The device allows each link to
16 simultaneously transmit bidirectional control-channel data while forward
18 four remotely located sensors using industry-standard coax or STP
23 MAX96712 can be paired with first-generation 3.12Gbps or 1.5Gbps GMSL1
34 enable-gpios: true
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| /linux/drivers/staging/media/atomisp/pci/ |
| H A D | atomisp_csi2_bridge.c | 1 // SPDX-License-Identifier: GPL-2.0
8 * Based on drivers/media/pci/intel/ipu3/cio2-bridge.c written by:
18 #include <media/ipu-bridge.h>
19 #include <media/v4l2-fwnode.h>
28 * 79234640-9e10-4fea-a5c1-b5aa8b19756f
52 * 822ace8f-2814-4174-a56b-5f029fe079ee
61 * dc2f6c4f-045b-4f1d-97b9-882a6860a4be
70 * 75c9a639-5c8a-4a00-9f48-a9c3b5da789f
94 * Once all sensors are moved to v4l2-async probing atomisp_gmin_platform.c can
122 DMI_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10"),
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| /linux/Documentation/devicetree/bindings/display/ |
| H A D | solomon,ssd1307fb.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Maxime Ripard <mripard@kernel.org>
11 - Javier Martinez Canillas <javierm@redhat.com>
17 - enum:
18 - solomon,ssd1305fb-i2c
19 - solomon,ssd1306fb-i2c
20 - solomon,ssd1307fb-i2c
21 - solomon,ssd1309fb-i2c
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