drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c

Source file repositories/reference/linux-study-clean/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c

File Facts

System
Linux kernel
Corpus path
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
Extension
.c
Size
4838 bytes
Lines
198
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-only
/*
 * STMicroelectronics st_lsm6dsx i2c driver
 *
 * Copyright 2016 STMicroelectronics Inc.
 *
 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
 * Denis Ciocca <denis.ciocca@st.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>

#include "st_lsm6dsx.h"

static const struct regmap_config st_lsm6dsx_i2c_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static int st_lsm6dsx_i2c_probe(struct i2c_client *client)
{
	int hw_id;
	struct regmap *regmap;

	hw_id = (kernel_ulong_t)device_get_match_data(&client->dev);
	if (!hw_id)
		hw_id = i2c_client_get_device_id(client)->driver_data;
	if (!hw_id)
		return -EINVAL;

	regmap = devm_regmap_init_i2c(client, &st_lsm6dsx_i2c_regmap_config);
	if (IS_ERR(regmap)) {
		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
		return PTR_ERR(regmap);
	}

	return st_lsm6dsx_probe(&client->dev, client->irq, hw_id, regmap);
}

static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
	{
		.compatible = "st,lsm6ds3",
		.data = (void *)ST_LSM6DS3_ID,
	},
	{
		.compatible = "st,lsm6ds3h",
		.data = (void *)ST_LSM6DS3H_ID,
	},
	{
		.compatible = "st,lsm6dsl",
		.data = (void *)ST_LSM6DSL_ID,
	},
	{
		.compatible = "st,lsm6dsm",
		.data = (void *)ST_LSM6DSM_ID,
	},
	{
		.compatible = "st,ism330dlc",
		.data = (void *)ST_ISM330DLC_ID,
	},
	{
		.compatible = "st,lsm6dso",
		.data = (void *)ST_LSM6DSO_ID,
	},
	{
		.compatible = "st,asm330lhh",
		.data = (void *)ST_ASM330LHH_ID,
	},
	{
		.compatible = "st,lsm6dsox",
		.data = (void *)ST_LSM6DSOX_ID,
	},
	{
		.compatible = "st,lsm6dsr",
		.data = (void *)ST_LSM6DSR_ID,
	},
	{
		.compatible = "st,lsm6ds3tr-c",
		.data = (void *)ST_LSM6DS3TRC_ID,
	},
	{
		.compatible = "st,ism330dhcx",
		.data = (void *)ST_ISM330DHCX_ID,
	},
	{
		.compatible = "st,lsm9ds1-imu",

Annotation

Implementation Notes