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/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO bitbanged I2C
10 - Wolfram Sang <wsa@kernel.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - const: i2c-gpio
20 sda-gpios:
22 gpio used for the sda signal, this should be flagged as
[all …]
/linux/arch/arm/boot/dts/samsung/
H A Dexynos5250-spring.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
10 #include <dt-bindings/clock/samsung,s2mps11.h>
11 #include <dt-bindings/gpio/gpio.h>
12 #include <dt-bindings/interrupt-controller/irq.h>
13 #include <dt-bindings/input/input.h>
19 chassis-type = "laptop";
33 stdout-path = "serial3:115200n8";
36 gpio-keys {
37 compatible = "gpio-keys";
[all …]
H A Dexynos5250-snow-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/clock/maxim,max77686.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/input/input.h>
12 #include <dt-bindings/sound/samsung-i2s.h>
30 stdout-path = "serial3:115200n8";
33 gpio-keys {
34 compatible = "gpio-keys";
35 pinctrl-names = "default";
[all …]
H A Ds5pv210-aries.dtsi1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
7 #include <dt-bindings/gpio/gpio.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
32 reserved-memory {
33 #address-cells = <1>;
34 #size-cells = <1>;
38 compatible = "shared-dma-pool";
39 no-map;
44 compatible = "shared-dma-pool";
[all …]
H A Dexynos4210-i9100.dts1 // SPDX-License-Identifier: GPL-2.0
3 * Samsung's Exynos4210 based Galaxy S2 (GT-I9100 version) device tree
11 /dts-v1/;
13 #include "exynos4412-ppmu-common.dtsi"
15 #include <dt-bindings/gpio/gpio.h>
16 #include <dt-bindings/input/linux-event-codes.h>
19 model = "Samsung Galaxy S2 (GT-I9100)";
21 chassis-type = "handset";
35 stdout-path = "serial2:115200n8";
38 vemmc_reg: regulator-0 {
[all …]
H A Dexynos4412-galaxy-s3.dtsi1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
10 #include <dt-bindings/leds/common.h>
11 #include "exynos4412-midas.dtsi"
19 led-controller {
21 flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>;
22 enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>;
24 pinctrl-names = "default", "host", "isp";
25 pinctrl-0 = <&camera_flash_host>;
26 pinctrl-1 = <&camera_flash_host>;
[all …]
H A Dexynos5250-arndale.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
12 #include <dt-bindings/input/input.h>
13 #include <dt-bindings/clock/samsung,s2mps11.h>
14 #include <dt-bindings/sound/samsung-i2s.h>
32 stdout-path = "serial2:115200n8";
35 gpio-keys {
36 compatible = "gpio-keys";
[all …]
H A Ds5pv210-goni.dts1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2013-2014 Samsung Electronics, Co. Ltd.
13 /dts-v1/;
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/interrupt-controller/irq.h>
16 #include <dt-bindings/input/input.h>
38 pmic_ap_clk: clock-0 {
40 compatible = "fixed-clock";
41 #clock-cells = <0>;
42 clock-frequency = <32768>;
[all …]
H A Dexynos4212-tab3.dtsi1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include "exynos4412-ppmu-common.dtsi"
12 #include "exynos-mfc-reserved-memory.dtsi"
13 #include <dt-bindings/clock/samsung,s2mps11.h>
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/leds/common.h>
16 #include <dt-bindings/input/gpio-keys.h>
17 #include <dt-bindings/input/input.h>
18 #include <dt-bindings/interrupt-controller/irq.h>
[all …]
H A Dexynos4412-midas.dtsi1 // SPDX-License-Identifier: GPL-2.0
12 /dts-v1/;
14 #include "exynos4412-ppmu-common.dtsi"
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/input/input.h>
18 #include <dt-bindings/interrupt-controller/irq.h>
19 #include <dt-bindings/clock/maxim,max77686.h>
20 #include "exynos-pinctrl.h"
34 stdout-path = &serial_2;
38 compatible = "samsung,secure-firmware";
[all …]
H A Dexynos4412-p4note.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 * Based on exynos4412-midas.dtsi.
10 /dts-v1/;
12 #include "exynos4412-ppmu-common.dtsi"
14 #include <dt-bindings/clock/maxim,max77686.h>
15 #include <dt-bindings/gpio/gpio.h>
16 #include <dt-bindings/input/linux-event-codes.h>
17 #include <dt-bindings/interrupt-controller/irq.h>
18 #include <dt-bindings/power/summit,smb347-charger.h>
19 #include "exynos-pinctrl.h"
[all …]
/linux/Documentation/i2c/
H A Dgpio-fault-injection.rst2 Linux I2C fault injection
5 The GPIO based I2C bus master driver can be configured to provide fault
6 injection capabilities. It is then meant to be connected to another I2C bus
7 which is driven by the I2C bus master driver under test. The GPIO fault
8 injection driver can create special states on the bus which the other I2C bus
12 'i2c-fault-injector' subdirectory in the Kernel debugfs filesystem, usually
14 driven I2C bus. Each subdirectory will contain files to trigger the fault
15 injection. They will be described now along with their intended use-cases.
21 -----
30 "sda"
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/linux/arch/arm/boot/dts/marvell/
H A Dkirkwood-km_common.dtsi1 // SPDX-License-Identifier: GPL-2.0
5 stdout-path = &uart0;
9 pinctrl: pin-controller@10000 {
10 pinctrl-0 = < &pmx_i2c_gpio_sda &pmx_i2c_gpio_scl >;
11 pinctrl-names = "default";
13 pmx_i2c_gpio_sda: pmx-gpio-sda {
17 pmx_i2c_gpio_scl: pmx-gpio-scl {
28 i2c {
29 compatible = "i2c-gpio";
30 sda-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
[all …]
/linux/include/linux/platform_data/
H A Di2c-gpio.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2c-gpio interface to platform code
11 * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio
12 * @udelay: signal toggle delay. SCL frequency is (500 / udelay) kHz
15 * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin
19 * @sda_is_output_only: SDA output drivers can't be turned off.
20 * This is for clients that can only read SDA/SCL.
21 * @sda_has_no_pullup: SDA is used in a non-compliant way and has no pull-up.
22 * Therefore disable open-drain.
26 * @scl_has_no_pullup: SCL is used in a non-compliant way and has no pull-up.
[all …]
/linux/drivers/staging/sm750fb/
H A Dddk750_swi2c.c1 // SPDX-License-Identifier: GPL-2.0
5 * swi2c.c --- SM750/SM718 DDK
6 * This file contains the source code for I2C using software
16 * I2C Software Master Driver:
18 * Each i2c cycle is split into 4 sections. Each of these section marks
19 * a point in time where the SCL or SDA may be changed.
22 * +-------------+-------------+-------------+-------------+
29 * the SDA may only be changed in section 2. and section 4. The table
37 * ---------------+---+---+---+---+
38 * Tx Start SDA | | H | | L |
[all …]
/linux/arch/arm/boot/dts/nxp/mxs/
H A Dimx23-sansa.dts2 * Copyright (C) 2013-2016 Marek Vasut <marek.vasut@gmail.com>
4 * This file is dual-licensed: you can use it either under the terms
44 /dts-v1/;
45 #include <dt-bindings/gpio/gpio.h>
58 apbh-bus@80000000 {
60 compatible = "fsl,imx23-mmc";
61 pinctrl-names = "default";
62 pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_pins_fixup>;
63 bus-width = <4>;
64 vmmc-supply = <&reg_vddio_sd0>;
[all …]
/linux/arch/arm/boot/dts/renesas/
H A Dr8a7791-koelsch.dts1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 2013-2014 Renesas Solutions Corp.
11 * SSI-AK4643
38 /dts-v1/;
40 #include <dt-bindings/gpio/gpio.h>
41 #include <dt-bindings/input/input.h>
63 stdout-path = "serial0:115200n8";
77 compatible = "gpio-keys";
79 pinctrl-0 = <&keyboard_pins>;
80 pinctrl-names = "default";
[all …]
H A Dr8a7790-lager.dts1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2013-2014 Renesas Solutions Corp.
7 * Copyright (C) 2015-2016 Renesas Electronics Corporation
11 * SSI-AK4643
38 /dts-v1/;
40 #include <dt-bindings/gpio/gpio.h>
41 #include <dt-bindings/input/input.h>
63 stdout-path = "serial0:115200n8";
77 compatible = "gpio-keys";
79 pinctrl-0 = <&keyboard_pins>;
[all …]
/linux/drivers/i2c/algos/
H A Di2c-algo-bit.c1 // SPDX-License-Identifier: GPL-2.0+
3 * i2c-algo-bit.c: i2c driver algorithms for bit-shift adapters
5 * Copyright (C) 1995-2000 Simon G. Vogl
13 #include <linux/delay.h>
16 #include <linux/i2c.h>
17 #include <linux/i2c-algo-bit.h>
20 /* ----- global defines ----------------------------------------------- */
33 /* ----- global variables --------------------------------------------- */
35 static int bit_test; /* see if the line-setting functions work */
37 MODULE_PARM_DESC(bit_test, "lines testing - 0 off; 1 report; 2 fail if stuck");
[all …]
/linux/drivers/i2c/busses/
H A Di2c-keba.c1 // SPDX-License-Identifier: GPL-2.0
5 * Driver for KEBA I2C controller FPGA IP core
8 #include <linux/i2c.h>
14 #define KI2C "i2c-keba"
64 * The I2C controller has an IN_USE bit for locking access to the in ki2c_inuse_lock()
65 * controller. This enables the use of I2C controller by other none in ki2c_inuse_lock()
68 * If the I2C controller is free, then the first read returns in ki2c_inuse_lock()
69 * IN_USE == 0. After that the I2C controller is locked and further in ki2c_inuse_lock()
72 * The I2C controller is unlocked by writing 1 into IN_USE. in ki2c_inuse_lock()
74 * The IN_USE bit acts as a hardware semaphore for the I2C controller. in ki2c_inuse_lock()
[all …]
H A Di2c-omap.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * TI OMAP I2C master mode driver
7 * Copyright (C) 2004 - 2007 Texas Instruments.
19 #include <linux/delay.h>
20 #include <linux/i2c.h>
30 #include <linux/platform_data/i2c-omap.h>
35 /* I2C controller revisions */
38 /* I2C controller revisions present on specific hardware */
81 /* I2C Interrupt Enable Register (OMAP_I2C_IE): */
90 /* I2C Status Register (OMAP_I2C_STAT): */
[all …]
H A Di2c-designware-pcidrv.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Synopsys DesignWare I2C adapter driver (master only).
5 * Based on the TI DAVINCI I2C adapter driver.
12 #include <linux/delay.h>
15 #include <linux/i2c.h>
27 #include "i2c-designware-core.h"
28 #include "i2c-ccgx-ucsi.h"
30 #define DRIVER_NAME "i2c-designware-pci"
65 /* Merrifield HCNT/LCNT/SDA hold time */
73 /* BayTrail HCNT/LCNT/SDA hold time */
[all …]
/linux/arch/arm64/boot/dts/exynos/
H A Dexynos7870-on7xelte.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include <dt-bindings/gpio/gpio.h>
12 #include <dt-bindings/input/input.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
18 chassis-type = "handset";
30 #address-cells = <2>;
31 #size-cells = <1>;
34 stdout-path = &serial2;
37 compatible = "simple-framebuffer";
[all …]
/linux/drivers/media/usb/gspca/
H A Dw996Xcf.c1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it>
21 #define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */
23 #define Y_QUANTABLE (&sd->jpeg_hdr[JPEG_QT0_OFFSET])
24 #define UV_QUANTABLE (&sd->jpeg_hdr[JPEG_QT1_OFFSET])
51 /*--------------------------------------------------------------------------
52 Write 64-bit data to the fast serial bus registers.
53 Return 0 on success, -1 otherwise.
54 --------------------------------------------------------------------------*/
57 struct usb_device *udev = sd->gspca_dev.dev; in w9968cf_write_fsb()
[all …]
/linux/arch/arm/boot/dts/microchip/
H A Dat91sam9x5.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91sam9x5.dtsi - Device Tree Include file for AT91SAM9x5 family SoC
11 #include <dt-bindings/dma/at91.h>
12 #include <dt-bindings/pinctrl/at91.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/clock/at91.h>
16 #include <dt-bindings/mfd/at91-usart.h>
19 #address-cells = <1>;
20 #size-cells = <1>;
[all …]

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