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Searched +full:spi +full:- +full:device (Results 1 – 25 of 1129) sorted by relevance

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/linux/Documentation/spi/
H A D	spidev.rst	2 SPI userspace API 5 SPI devices have a limited userspace API, supporting basic half-duplex 6 read() and write() access to SPI slave devices. Using ioctl() requests, 7 full duplex transfers and device I/O configuration are also available. 15 #include <linux/spi/spidev.h> 19 * Prototyping in an environment that's not crash-prone; stray pointers 23 as SPI slaves, which you may need to change quite often. 30 DEVICE CREATION, DRIVER BINDING 33 The spidev driver contains lists of SPI devices that are supported for 36 The following are the SPI device tables supported by the spidev driver: [all …]
H A D	spi-summary.rst	2 Overview of Linux kernel SPI support 5 02-Feb-2012 7 What is SPI? 8 ------------ 9 The "Serial Peripheral Interface" (SPI) is a synchronous four wire serial 12 standardization body. SPI uses a host/target configuration. 17 clocking modes through which data is exchanged; mode-0 and mode-3 are most 22 SPI hosts use a fourth "chip select" line to activate a given SPI target 23 device, so those three signal wires may be connected to several chips 24 in parallel. All SPI targets support chipselects; they are usually active [all …]
/linux/include/linux/spi/
H A D	spi.h	1 /* SPDX-License-Identifier: GPL-2.0-or-later 12 #include <linux/device.h> 21 #include <uapi/linux/spi/spi.h> 23 /* Max no. of CS supported per spi device / 260 spi_dev_get(struct spi_device spi) spi_dev_get() argument 265 spi_dev_put(struct spi_device * spi) spi_dev_put() argument 272 spi_get_ctldata(const struct spi_device * spi) spi_get_ctldata() argument 277 spi_set_ctldata(struct spi_device * spi,void * state) spi_set_ctldata() argument 284 spi_set_drvdata(struct spi_device * spi,void * data) spi_set_drvdata() argument 289 spi_get_drvdata(const struct spi_device * spi) spi_get_drvdata() argument 294 spi_get_chipselect(const struct spi_device * spi,u8 idx) spi_get_chipselect() argument 299 spi_set_chipselect(struct spi_device * spi,u8 idx,u8 chipselect) spi_set_chipselect() argument 304 spi_get_csgpiod(const struct spi_device * spi,u8 idx) spi_get_csgpiod() argument 309 spi_set_csgpiod(struct spi_device * spi,u8 idx,struct gpio_desc * csgpiod) spi_set_csgpiod() argument 314 spi_is_csgpiod(struct spi_device * spi) spi_is_csgpiod() argument 1157 struct spi_device spi; global() member 1297 spi_max_message_size(struct spi_device spi) spi_max_message_size() argument 1307 spi_max_transfer_size(struct spi_device * spi) spi_max_transfer_size() argument 1330 spi_is_bpw_supported(struct spi_device * spi,u32 bpw) spi_is_bpw_supported() argument 1457 spi_sync_transfer(struct spi_device * spi,struct spi_transfer * xfers,unsigned int num_xfers) spi_sync_transfer() argument 1480 spi_write(struct spi_device * spi,const void * buf,size_t len) spi_write() argument 1503 spi_read(struct spi_device * spi,void * buf,size_t len) spi_read() argument 1529 spi_w8r8(struct spi_device * spi,u8 cmd) spi_w8r8() argument 1554 spi_w8r16(struct spi_device * spi,u8 cmd) spi_w8r16() argument 1579 spi_w8r16be(struct spi_device * spi,u8 cmd) spi_w8r16be() argument [all...]
/linux/drivers/mtd/devices/
H A D	mtd_dataflash.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * Atmel AT45xxx DataFlash MTD driver for lightweight SPI framework 6 * Copyright (C) 2003-2005 SAN People (Pty) Ltd 11 #include <linux/device.h> 17 #include <linux/spi/spi.h> 18 #include <linux/spi/flash.h> 24 * DataFlash is a kind of SPI flash. Most AT45 chips have two buffers in 28 * Sometimes DataFlash is packaged in MMC-format cards, although the 57 #define OP_MWRITE_BUFFER1 0x88 /* sector must be pre-erased / 58 #define OP_MWRITE_BUFFER2 0x89 / sector must be pre-erased */ [all …]
/linux/drivers/iio/common/st_sensors/
H A D	st_sensors_spi.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * STMicroelectronics sensors spi library driver 5 * Copyright 2012-2013 STMicroelectronics Inc. 15 #include <linux/spi/spi.h> 33 * st_sensors_is_spi_3_wire() - check if SPI 3-wire mode has been selected 34 * @spi: spi device reference. 36 * Return: true if SPI 3-wire mode is selected, false otherwise. 38 static bool st_sensors_is_spi_3_wire(struct spi_device spi) in st_sensors_is_spi_3_wire() argument 41 struct device dev = &spi->dev; in st_sensors_is_spi_3_wire() 43 if (device_property_read_bool(dev, "spi-3wire")) in st_sensors_is_spi_3_wire() [all …]
/linux/drivers/video/backlight/
H A D	ili922x.c	`1 // SPDX-License-Identifier: GPL-2.0-or-later 6 * This driver implements a lcd device for the ILITEK 922x display 7 * controller. The interface to the display is SPI and the display's 19 #include <linux/spi/spi.h> 72 * Device ID as found in the datasheet (supports 9221 and 9222) 88 * ---------------------------------- 90 * ---------------------------------- 93 * - START_RS_INDEX set the index register 94 * - START_RS_REG write/read registers/GRAM 96 * - START_RW_WRITE write [all …]`
/linux/Documentation/devicetree/bindings/spi/
H A D	spi-peripheral-props.yaml	1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 3 --- 4 $id: http://devicetree.org/schemas/spi/spi-peripheral-props.yaml# 5 $schema: http://devicetree.org/meta-schemas/core.yaml# 7 title: Peripheral-specific properties for a SPI bus. 10 Many SPI controllers need to add properties to peripheral devices. They could 11 be common properties like spi-max-frequency, spi-cs-high, etc. or they could 14 per-peripheral and there can be multiple peripherals attached to a 20 - Mark Brown <broonie@kernel.org> 28 - minimum: 0 [all …]
H A D	spi-davinci.txt	1 Davinci SPI controller device bindings 4 Keystone 2 - https://www.ti.com/lit/ug/sprugp2a/sprugp2a.pdf 5 dm644x - https://www.ti.com/lit/ug/sprue32a/sprue32a.pdf 6 OMAP-L138/da830 - http://www.ti.com/lit/ug/spruh77a/spruh77a.pdf 9 - #address-cells: number of cells required to define a chip select 10 address on the SPI bus. Should be set to 1. 11 - #size-cells: should be zero. 12 - compatible: 13 - "ti,dm6441-spi" for SPI used similar to that on DM644x SoC family 14 - "ti,da830-spi" for SPI used similar to that on DA8xx SoC family [all …]
H A D	icpdas-lp8841-spi-rtc.txt	`1 * ICP DAS LP-8841 SPI Controller for RTC 3 ICP DAS LP-8841 contains a DS-1302 RTC. RTC is connected to an IO 4 memory register, which acts as an SPI master device. 6 The device uses the standard MicroWire half-duplex transfer timing. 13 - #address-cells: should be 1 15 - #size-cells: should be 0 17 - compatible: should be "icpdas,lp8841-spi-rtc" 19 - reg: should provide IO memory address 21 Requirements to SPI slave nodes: 23 - There can be only one slave device. [all …]`
/linux/drivers/spi/
H A D	spidev.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * Simple synchronous userspace interface to SPI devices 6 * Andrea Paterniani <a.paterniani@swapp-eng.it> 13 #include <linux/device.h> 24 #include <linux/spi/spi.h> 25 #include <linux/spi/spidev.h> 31 * This supports access to SPI devices using normal userspace I/O calls. 33 * and often mask message boundaries, full SPI support requires full duplex 37 * SPI has a character major number assigned. We allocate minor numbers 39 * (or mdev with busybox) to create and destroy the /dev/spidevB.C device [all …]
H A D	spi-mem.c	1 // SPDX-License-Identifier: GPL-2.0+ 11 #include <linux/spi/spi.h> 12 #include <linux/spi/spi-mem.h> 20 * spi_controller_dma_map_mem_op_data() - DMA-map the buffer attached to a 22 * @ctlr: the SPI controller requesting this dma_map() 24 * @sgt: a pointer to a non-initialized sg_table that will be filled by this 28 * This helper prepares everything for you and provides a ready-to-use 29 * sg_table. This function is not intended to be called from spi drivers. 30 * Only SPI controller drivers should use it. 32 * op->data.buf.{in,out} is DMA-able before calling this function. [all …]
/linux/drivers/input/rmi4/
H A D	rmi_spi.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * Copyright (c) 2011-2016 Synaptics Incorporated 11 #include <linux/spi/spi.h> 38 struct spi_device spi; member 55 struct spi_device spi = rmi_spi->spi; in rmi_spi_manage_pools() local 56 int buf_size = rmi_spi->xfer_buf_size in rmi_spi_manage_pools() 57 ? rmi_spi->xfer_buf_size : RMI_SPI_DEFAULT_XFER_BUF_SIZE; in rmi_spi_manage_pools() 68 tmp = rmi_spi->rx_buf; in rmi_spi_manage_pools() 69 buf = devm_kcalloc(&spi->dev, buf_size, 2, in rmi_spi_manage_pools() 72 return -ENOMEM; in rmi_spi_manage_pools() [all …]
/linux/drivers/rtc/
H A D	rtc-max6916.c	1 // SPDX-License-Identifier: GPL-2.0-only 2 /* rtc-max6916.c 4 * Driver for MAXIM max6916 Low Current, SPI Compatible 12 #include <linux/device.h> 15 #include <linux/spi/spi.h> 31 static int max6916_read_reg(struct device dev, unsigned char address, in max6916_read_reg() 34 struct spi_device spi = to_spi_device(dev); in max6916_read_reg() local 38 return spi_write_then_read(spi, data, 1, data, 1); in max6916_read_reg() 41 static int max6916_write_reg(struct device dev, unsigned char address, in max6916_write_reg() 44 struct spi_device spi = to_spi_device(dev); in max6916_write_reg() local [all …]
H A D	rtc-ds1390.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * rtc-ds1390.c -- driver for the Dallas/Maxim DS1390/93/94 SPI RTC 17 #include <linux/spi/spi.h> 53 static void ds1390_set_reg(struct device dev, unsigned char address, in ds1390_set_reg() 56 struct spi_device spi = to_spi_device(dev); in ds1390_set_reg() local 63 spi_write(spi, buf, 2); in ds1390_set_reg() 66 static int ds1390_get_reg(struct device dev, unsigned char address, in ds1390_get_reg() 69 struct spi_device spi = to_spi_device(dev); in ds1390_get_reg() local 74 return -EINVAL; in ds1390_get_reg() 77 chip->txrx_buf[0] = address & 0x7f; in ds1390_get_reg() [all …]
H A D	rtc-ds1343.c	1 // SPDX-License-Identifier: GPL-2.0-only 2 /* rtc-ds1343.c 4 * Driver for Dallas Semiconductor DS1343 Low Current, SPI Compatible 14 #include <linux/device.h> 15 #include <linux/spi/spi.h> 75 MODULE_DEVICE_TABLE(spi, ds1343_id); 83 static ssize_t ds1343_show_glitchfilter(struct device dev, in ds1343_show_glitchfilter() 86 struct ds1343_priv priv = dev_get_drvdata(dev->parent); in ds1343_show_glitchfilter() 90 res = regmap_read(priv->map, DS1343_CONTROL_REG, &data); in ds1343_show_glitchfilter() 102 static ssize_t ds1343_store_glitchfilter(struct device *dev, in ds1343_store_glitchfilter() [all …]
/linux/drivers/mfd/
H A D	sprd-sc27xx-spi.c	1 // SPDX-License-Identifier: GPL-2.0-only 10 #include <linux/mfd/sc27xx-pmic.h> 14 #include <linux/spi/spi.h> 39 struct device dev; 56 in the device data structure. 70 enum usb_charger_type sprd_pmic_detect_charger_type(struct device dev) in sprd_pmic_detect_charger_type() 72 struct spi_device spi = to_spi_device(dev); in sprd_pmic_detect_charger_type() local 73 struct sprd_pmic ddata = spi_get_drvdata(spi); in sprd_pmic_detect_charger_type() 74 const struct sprd_pmic_data pdata = ddata->pdata; in sprd_pmic_detect_charger_type() 79 ret = regmap_read_poll_timeout(ddata->regmap, pdata->charger_det, val, in sprd_pmic_detect_charger_type() [all …]
H A D	ocelot-spi.c	1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 3 * SPI core driver for the Ocelot chip family. 6 * SPI to the VSC7511, VSC7512, VSC7513 and VSC7514 chips. The main functions 7 * are to prepare the chip's SPI interface for a specific bus speed, and a host 11 * Copyright 2021-2022 Innovative Advantage Inc. 13 * Author: Colin Foster <colin.foster@in-advantage.com> 16 #include <linux/device.h> 24 #include <linux/spi/spi.h> 54 static int ocelot_spi_initialize(struct device dev) in ocelot_spi_initialize() 63 The SPI address must be big-endian, but we want the payload to match in ocelot_spi_initialize() [all …]
/linux/drivers/misc/
H A D	gehc-achc.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * datasheet: https://www.nxp.com/docs/en/data-sheet/K20P144M120SF3.pdf 5 * Copyright (C) 2018-2021 Collabora 6 * Copyright (C) 2018-2021 GE Healthcare 15 #include <linux/spi/spi.h> 25 struct mutex device_lock; /* avoid concurrent device access / 42 #define EZPORT_SECTOR_MASK (EZPORT_SECTOR_SIZE - 1) 59 static int ezport_start_programming(struct spi_device spi, struct gpio_desc *reset) in ezport_start_programming() argument 68 spi_bus_lock(spi->controller); in ezport_start_programming() 73 ret = spi_sync_locked(spi, &msg); in ezport_start_programming() [all …]
/linux/drivers/hwmon/
H A D	adcxx.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 9 * The adcxx4s communicates with a host processor via an SPI/Microwire Bus 28 #include <linux/device.h> 32 #include <linux/hwmon-sysfs.h> 35 #include <linux/spi/spi.h> 40 struct device hwmon_dev; 47 static ssize_t adcxx_show(struct device dev, in adcxx_show() 50 struct spi_device spi = to_spi_device(dev); in adcxx_show() local 52 struct adcxx adc = spi_get_drvdata(spi); in adcxx_show() 58 if (mutex_lock_interruptible(&adc->lock)) in adcxx_show() [all …]
H A D	max31722.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * max31722 - hwmon driver for Maxim Integrated MAX31722/MAX31723 SPI 10 #include <linux/hwmon-sysfs.h> 13 #include <linux/spi/spi.h> 25 struct device hwmon_dev; 33 struct spi_device spi = data->spi_device; in max31722_set_mode() local 36 (data->mode & MAX31722_MODE_MASK) \| mode in max31722_set_mode() 39 ret = spi_write(spi, &buf, sizeof(buf)); in max31722_set_mode() 41 dev_err(&spi->dev, "failed to set sensor mode.\n"); in max31722_set_mode() 44 data->mode = (data->mode & MAX31722_MODE_MASK) \| mode; in max31722_set_mode() [all …]
/linux/drivers/net/wireless/ti/wlcore/
H A D	spi.c	`1 // SPDX-License-Identifier: GPL-2.0-only 5 * Copyright (C) 2008-2009 Nokia Corporation 16 #include <linux/spi/spi.h> 51 ((WL1271_BUSY_WORD_LEN - 4) / sizeof(u32)) 63 /* Maximum number of SPI write chunks / 69 .nvs_name = "ti-connectivity/wl127x-nvs.bin", 74 .nvs_name = "ti-connectivity/wl128x-nvs.bin", 79 .cfg_name = "ti-connectivity/wl18xx-conf.bin", 80 .nvs_name = "ti-connectivity/wl1271-nvs.bin", 84 struct device dev; [all …]`
/linux/Documentation/devicetree/bindings/iio/adc/
H A D	microchip,mcp3564.yaml	1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 3 --- 5 $schema: http://devicetree.org/meta-schemas/core.yaml# 10 - Marius Cristea <marius.cristea@microchip.com> 13 Bindings for the Microchip family of 153.6 ksps, Low-Noise 16/24-Bit 14 Delta-Sigma ADCs with an SPI interface. Datasheet can be found here: 16 …s/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP3561-2-4-Family-Data-Sheet-DS20006181… 18 …ds/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3561_2_4R-Data-Sheet-DS200006391C.pdf 20 …ProductDocuments/DataSheets/MCP3461-2-4-Two-Four-Eight-Channel-153.6-ksps-Low-Noise-16-Bit-Delta-S… 22 …/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3461-2-4R-Family-Data-Sheet-DS20006404… [all …]
/linux/Documentation/devicetree/bindings/mtd/
H A D	st-fsm.txt	1 * ST-Microelectronics SPI FSM Serial (NOR) Flash Controller 4 - compatible : Should be "st,spi-fsm" 5 - reg : Contains register's location and length. 6 - reg-names : Should contain the reg names "spi-fsm" 7 - interrupts : The interrupt number 8 - pinctrl-0 : Standard Pinctrl phandle (see: pinctrl/pinctrl-bindings.txt) 11 - st,syscfg : Phandle to boot-device system configuration registers 12 - st,boot-device-reg : Address of the aforementioned boot-device register(s) 13 - st,boot-device-spi : Expected boot-device value if booted via this device 17 compatible = "st,spi-fsm"; [all …]
/linux/Documentation/devicetree/bindings/rtc/
H A D	maxim-ds1302.txt	1 * Maxim/Dallas Semiconductor DS-1302 RTC 3 Simple device which could be used to store date/time between reboots. 5 The device uses the standard MicroWire half-duplex transfer timing. 12 - compatible : Should be "maxim,ds1302" 14 Required SPI properties: 16 - reg : Should be address of the device chip select within 19 - spi-max-frequency : DS-1302 has 500 kHz if powered at 2.2V, 22 - spi-3wire : The device has a shared signal IN/OUT line. 24 - spi-lsb-first : DS-1302 requires least significant bit first 27 - spi-cs-high: DS-1302 has active high chip select line. This is [all …]
/linux/drivers/input/keyboard/
H A D	applespi.c	1 // SPDX-License-Identifier: GPL-2.0 3 * MacBook (Pro) SPI keyboard and touchpad driver 5 * Copyright (c) 2015-2018 Federico Lorenzi 6 * Copyright (c) 2017-2018 Ronald Tschalär 11 * MacBook8 and newer can be driven either by USB or SPI. However the USB 15 * * UIEN ("USB Interface Enable"): If invoked with argument 1, disables SPI 18 * * SIEN ("SPI Interface Enable"): If invoked with argument 1, disables USB 19 * and enables SPI. If invoked with argument 0, disables SPI. 20 * * SIST ("SPI Interface Status"): Returns 1 if SPI is enabled, 0 otherwise. 21 * * ISOL: Resets the four GPIO pins used for SPI. Intended to be invoked with [all …]

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