drivers/iio/imu/inv_icm45600/inv_icm45600_spi.c

Source file repositories/reference/linux-study-clean/drivers/iio/imu/inv_icm45600/inv_icm45600_spi.c

File Facts

System
Linux kernel
Corpus path
drivers/iio/imu/inv_icm45600/inv_icm45600_spi.c
Extension
.c
Size
3035 bytes
Lines
109
Domain
Driver Families
Bucket
drivers/iio
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright (C) 2025 InvenSense, Inc. */

#include <linux/bitfield.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/regmap.h>

#include <linux/spi/spi.h>

#include "inv_icm45600.h"

static const struct regmap_config inv_icm45600_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static int inv_icm45600_spi_bus_setup(struct inv_icm45600_state *st)
{
	/* Set slew rates for SPI. */
	return regmap_update_bits(st->map, INV_ICM45600_REG_DRIVE_CONFIG0,
				INV_ICM45600_DRIVE_CONFIG0_SPI_MASK,
				FIELD_PREP(INV_ICM45600_DRIVE_CONFIG0_SPI_MASK,
					INV_ICM45600_SPI_SLEW_RATE_5NS));
}

static int inv_icm45600_probe(struct spi_device *spi)
{
	const struct inv_icm45600_chip_info *chip_info;
	struct regmap *regmap;

	chip_info = spi_get_device_match_data(spi);
	if (!chip_info)
		return -ENODEV;

	/* Use SPI specific regmap. */
	regmap = devm_regmap_init_spi(spi, &inv_icm45600_regmap_config);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	return inv_icm45600_core_probe(regmap, chip_info, true,
				       inv_icm45600_spi_bus_setup);
}

/*
 * The device id table is used to identify which device is
 * supported by this driver.
 */
static const struct spi_device_id inv_icm45600_id[] = {
	{ "icm45605", (kernel_ulong_t)&inv_icm45605_chip_info },
	{ "icm45606", (kernel_ulong_t)&inv_icm45606_chip_info },
	{ "icm45608", (kernel_ulong_t)&inv_icm45608_chip_info },
	{ "icm45634", (kernel_ulong_t)&inv_icm45634_chip_info },
	{ "icm45686", (kernel_ulong_t)&inv_icm45686_chip_info },
	{ "icm45687", (kernel_ulong_t)&inv_icm45687_chip_info },
	{ "icm45688p", (kernel_ulong_t)&inv_icm45688p_chip_info },
	{ "icm45689", (kernel_ulong_t)&inv_icm45689_chip_info },
	{ }
};
MODULE_DEVICE_TABLE(spi, inv_icm45600_id);

static const struct of_device_id inv_icm45600_of_matches[] = {
	{
		.compatible = "invensense,icm45605",
		.data = &inv_icm45605_chip_info,
	}, {
		.compatible = "invensense,icm45606",
		.data = &inv_icm45606_chip_info,
	}, {
		.compatible = "invensense,icm45608",
		.data = &inv_icm45608_chip_info,
	}, {
		.compatible = "invensense,icm45634",
		.data = &inv_icm45634_chip_info,
	}, {
		.compatible = "invensense,icm45686",
		.data = &inv_icm45686_chip_info,
	}, {
		.compatible = "invensense,icm45687",
		.data = &inv_icm45687_chip_info,
	}, {
		.compatible = "invensense,icm45688p",
		.data = &inv_icm45688p_chip_info,
	}, {
		.compatible = "invensense,icm45689",
		.data = &inv_icm45689_chip_info,
	},
	{ }

Annotation

Implementation Notes