| /linux/drivers/gpio/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 You only need to enable this if you also want to enable
21 int "Maximum number of GPIOs for fast path"
50 this symbol, but new drivers should use the generic gpio-regmap
58 These checks help ensure that GPIOs have been properly initialized
60 non-sleeping contexts. They can make bitbanged serial protocols
69 Say Y here to add the legacy sysfs interface for GPIOs.
76 bool "Enable legacy functionalities of the sysfs interface"
80 Say Y here if you want to enable the legacy, global GPIO
81 numberspace-based functionalities of the sysfs interface.
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| H A D | gpiolib-of.c | 1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (c) 2007-2008 MontaVista Software, Inc.
26 #include "gpiolib-of.h"
29 * This is Linux-specific flags. By default controllers' and Linux' mapping
31 * Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended.
44 * of_gpio_named_count() - Count GPIOs for a device
45 * @np: device node to count GPIOs for
48 * The function returns the count of GPIOs specified for a node.
52 * Either number of GPIOs defined in the property, or
53 * * %-EINVAL for an incorrectly formed "gpios" property, or
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| H A D | gpio-winbond.c | 1 // SPDX-License-Identifier: GPL-2.0+
24 /* global chip registers */
132 unsigned long gpios; member
145 return -EBUSY; in winbond_sio_enter()
149 * in order for chip to enter the "Extended Function Mode" in winbond_sio_enter()
206 * struct winbond_gpio_port_conflict - possibly conflicting device information
209 * is located (or WB_SIO_DEV_NONE - don't select any
226 * struct winbond_gpio_info - information about a particular GPIO port (device)
229 * @enablereg: port enable bit register number
230 * @enablebit: index of a port enable bit
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| H A D | gpio-mpc5200.c | 1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/gpio/legacy-of-mm-gpiochip.h>
29 * GPIO LIB API implementation for wakeup GPIOs.
31 * There's a maximum of 8 wakeup GPIOs. Which of these are available
34 * 0 -> GPIO_WKUP_7
35 * 1 -> GPIO_WKUP_6
36 * 2 -> PSC6_1
37 * 3 -> PSC6_0
38 * 4 -> ETH_17
39 * 5 -> PSC3_9
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| H A D | gpio-davinci.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2006-2007 David Brownell
43 #define BINTEN 0x8 /* GPIO Interrupt Per-Bank Enable Register */
50 struct davinci_gpio_controller *chip; member
55 struct gpio_chip chip; member
73 /*--------------------------------------------------------------------------*/
75 /* board setup code *MUST* setup pinmux and enable the GPIO clock. */
76 static inline int __davinci_direction(struct gpio_chip *chip, in __davinci_direction() argument
79 struct davinci_gpio_controller *d = gpiochip_get_data(chip); in __davinci_direction()
86 g = d->regs[bank]; in __davinci_direction()
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| H A D | gpio-rtd.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
30 * struct rtd_gpio_info - Specific GPIO register information
33 * @num_gpios: The number of GPIOs
37 * @ie_offset: Offset for GPIO interrupt enable registers
75 *reg_offset = info->deb_offset[offset / 8]; in rtd_gpio_get_deb_setval()
77 return info->deb_val[deb_index]; in rtd_gpio_get_deb_setval()
83 *reg_offset = info->deb_offset[0]; in rtd1295_misc_gpio_get_deb_setval()
85 return info->deb_val[deb_index]; in rtd1295_misc_gpio_get_deb_setval()
91 *reg_offset = info->deb_offset[0]; in rtd1295_iso_gpio_get_deb_setval()
93 return info->deb_val[deb_index]; in rtd1295_iso_gpio_get_deb_setval()
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| H A D | gpio-omap.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2003-2005 Nokia Corporation
9 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
27 #include <linux/platform_data/gpio-omap.h>
61 struct gpio_chip chip; member
78 void (*set_dataout)(struct gpio_bank *bank, unsigned gpio, int enable);
84 #define BANK_USED(bank) (bank->mod_usage || bank->irq_usage)
91 struct gpio_chip *chip = irq_data_get_irq_chip_data(d); in omap_irq_data_get_bank() local
92 return gpiochip_get_data(chip); in omap_irq_data_get_bank()
112 bank->context.oe = omap_gpio_rmw(bank->base + bank->regs->direction, in omap_set_gpio_direction()
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| H A D | TODO | 1 This is a place for planning the ongoing long-term work in the GPIO
9 to move away from the global GPIO numberspace and toward a descriptor-based
19 establish the numberspace at compile-time, making it hard to add any numbers
20 in the middle (such as if you missed a pin on a chip) without the numberspace
27 The runtime-assigned GPIO numberspace (what you get if you assign the GPIO
28 base as -1 in struct gpio_chip) has also became unpredictable due to factors
29 such as probe ordering and the introduction of -EPROBE_DEFER making probe
38 - Convert all GPIO device drivers to only #include <linux/gpio/driver.h>
40 - Convert all consumer drivers to only #include <linux/gpio/consumer.h>
42 - Convert all machine descriptors in "boardfiles" to only
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| /linux/Documentation/devicetree/bindings/iio/frequency/ |
| H A D | adi,adf4377.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
11 - Dragos Bogdan <dragos.bogdan@analog.com>
14 The ADF4377 is a high performance, ultralow jitter, dual output integer-N
25 - adi,adf4377
26 - adi,adf4378
31 spi-max-frequency:
37 clock-names:
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| /linux/drivers/video/fbdev/via/ |
| H A D | via-gpio.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/via-core.h>
14 #include "via-gpio.h"
17 * The ports we know about. Note that the port-25 gpios are not
30 .vg_name = "VGPIO0", /* Guess - not in datasheet */
70 * This structure controls the active GPIOs, which may be a subset
84 static int via_gpio_set(struct gpio_chip *chip, unsigned int nr, int value) in via_gpio_set() argument
86 struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip); in via_gpio_set()
91 spin_lock_irqsave(&cfg->vdev->reg_lock, flags); in via_gpio_set()
92 gpio = cfg->active_gpios[nr]; in via_gpio_set()
[all …]
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| /linux/Documentation/devicetree/bindings/media/i2c/ |
| H A D | sony,imx214.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Sony 1/3.06-Inch 13.13MP CMOS Digital Image Sensor
10 - Ricardo Ribalda <ribalda@kernel.org>
13 The Sony IMX214 is a 1/3.06-inch CMOS active pixel digital image sensor with
15 interface. Image data is sent through MIPI CSI-2, through 2 or 4 lanes at a
19 - $ref: /schemas/media/video-interface-devices.yaml#
27 - 0x10
28 - 0x1a
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| /linux/Documentation/devicetree/bindings/regulator/ |
| H A D | richtek,rt6245-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt6245-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RT6245 is a high-performance, synchronous step-down converter
18 - $ref: regulator.yaml#
23 - richtek,rt6245
28 enable-gpios:
30 A connection of the chip 'enable' gpio line. If not provided,
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| H A D | richtek,rtmv20-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rtmv20-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
14 It is used to drive laser diode. There're two signals for chip controls
15 (Enable/Fail), Enable pin to turn chip on, and Fail pin as fault indication.
27 wakeup-source: true
32 enable-gpios:
33 description: A connection of the 'enable' gpio line.
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| /linux/Documentation/devicetree/bindings/sound/ |
| H A D | nuvoton,nau8315.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NAU8315/NAU8318 Mono Class-D Amplifier
10 - David Lin <CTLIN0@nuvoton.com>
13 - $ref: dai-common.yaml#
18 - nuvoton,nau8315
19 - nuvoton,nau8318
21 '#sound-dai-cells':
24 enable-gpios:
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| /linux/Documentation/devicetree/bindings/input/touchscreen/ |
| H A D | melfas_mip4.txt | 4 - compatible: must be "melfas,mip4_ts"
5 - reg: I2C slave address of the chip (0x48 or 0x34)
6 - interrupts: interrupt to which the chip is connected
9 - ce-gpios: GPIO connected to the CE (chip enable) pin of the chip
16 interrupt-parent = <&gpio>;
18 ce-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
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| H A D | cypress,cy8ctma340.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 - Javier Martinez Canillas <javier@dowhile0.org>
15 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: touchscreen.yaml#
26 - const: cypress,cy8ctma340
27 - const: cypress,cy8ctst341
28 - const: cypress,cyttsp-spi
31 - const: cypress,cyttsp-i2c
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| /linux/Documentation/devicetree/bindings/net/bluetooth/ |
| H A D | nxp,88w8987-bt.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/bluetooth/nxp,88w8987-bt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 This binding describes UART-attached NXP bluetooth chips. These chips
11 are dual-radio chips supporting WiFi and Bluetooth. The bluetooth
12 works on standard H4 protocol over 4-wire UART. The RTS and CTS lines
13 are used during FW download. To enable power save mode, the host
14 asserts break signal over UART-TX line to put the chip into power save
15 state. De-asserting break wakes up the BT chip.
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| H A D | realtek,bluetooth.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Vasily Khoruzhick <anarsoul@gmail.com>
11 - Alistair Francis <alistair@alistair23.me>
14 RTL8723BS/RTL8723CS/RTL8821CS/RTL8822CS is a WiFi + BT chip. WiFi part
22 - enum:
23 - realtek,rtl8723bs-bt
24 - realtek,rtl8723cs-bt
25 - realtek,rtl8723ds-bt
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| H A D | amlogic,w155s2-bt.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/net/bluetooth/amlogic,w155s2-bt.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 The W155S2 is an Amlogic Bluetooth and Wi-Fi combo chip. It works on
12 the standard H4 protocol via a 4-wire UART interface, with baud rates
16 - Yang Li <yang.li@amlogic.com>
21 - items:
22 - enum:
23 - amlogic,w265s1-bt
[all …]
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| /linux/Documentation/devicetree/bindings/display/bridge/ |
| H A D | analogix,anx7625.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Xin Ji <xji@analogixsemi.com>
14 The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
28 enable-gpios:
29 description: used for power on chip control, POWER_EN pin D2.
32 reset-gpios:
33 description: used for reset chip control, RESET_N pin B7.
36 vdd10-supply:
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| /linux/Documentation/devicetree/bindings/mtd/ |
| H A D | atmel-nand.txt | 4 Documentation/devicetree/bindings/memory-controllers/atmel,ebi.txt).
11 - compatible: should be one of the following
12 "atmel,at91rm9200-nand-controller"
13 "atmel,at91sam9260-nand-controller"
14 "atmel,at91sam9261-nand-controller"
15 "atmel,at91sam9g45-nand-controller"
16 "atmel,sama5d3-nand-controller"
17 "microchip,sam9x60-nand-controller"
18 - ranges: empty ranges property to forward EBI ranges definitions.
19 - #address-cells: should be set to 2.
[all …]
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| /linux/drivers/mfd/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
36 bool "Altera Arria10 DevKit System Resource chip"
41 Support for the Altera Arria10 DevKit MAX5 System Resource chip
57 tristate "Active-semi ACT8945A"
62 Support for the ACT8945A PMIC from Active-semi. This device
63 features three step-down DC/DC converters and four low-dropout
79 sun4i-gpadc-iio and the hwmon driver iio_hwmon.
82 called sun4i-gpadc.
99 Say yes here to enable SMpro driver support for Ampere's Altra
113 tablets etc. It has 4 DC/DC step-down regulators, 3 DC/DC step-down
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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.
7 All platforms can enable the GPIO library, but if the platform strictly
9 Kconfig. Then, how GPIOs are mapped depends on what the platform uses to
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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| /linux/Documentation/devicetree/bindings/misc/ |
| H A D | ifm-csi.txt | 4 - compatible: "ifm,o2d-csi"
5 - reg: specifies sensor chip select number and associated address range
6 - interrupts: external interrupt line number and interrupt sense mode
8 - gpios: three gpio-specifiers for "capture", "reset" and "master enable"
9 GPIOs (strictly in this order).
10 - ifm,csi-clk-handle: the phandle to a node in the DT describing the sensor
12 - ifm,csi-addr-bus-width: address bus width (valid values are 16, 24, 25)
13 - ifm,csi-data-bus-width: data bus width (valid values are 8 and 16)
14 - ifm,csi-wait-cycles: sensor bus wait cycles
17 - ifm,csi-byte-swap: if this property is present, the byte swapping on
[all …]
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| /linux/Documentation/devicetree/bindings/extcon/ |
| H A D | extcon-max3355.txt | 1 Maxim Integrated MAX3355 USB OTG chip
2 -------------------------------------
4 MAX3355 integrates a charge pump and comparators to enable a system with an
5 integrated USB OTG dual-role transceiver to function as a USB OTG dual-role
9 - compatible: should be "maxim,max3355";
10 - maxim,shdn-gpios: should contain a phandle and GPIO specifier for the GPIO pin
12 - id-gpios: should contain a phandle and GPIO specifier for the GPIO pin
17 usb-otg {
19 maxim,shdn-gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
20 id-gpios = <&gpio5 31 GPIO_ACTIVE_HIGH>;
|