drivers/iio/gyro/st_gyro_i2c.c
Source file repositories/reference/linux-study-clean/drivers/iio/gyro/st_gyro_i2c.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/iio/gyro/st_gyro_i2c.c- Extension
.c- Size
- 2784 bytes
- Lines
- 123
- 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.
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/kernel.hlinux/module.hlinux/mod_devicetable.hlinux/i2c.hlinux/iio/iio.hlinux/iio/common/st_sensors.hlinux/iio/common/st_sensors_i2c.hst_gyro.h
Detected Declarations
function st_gyro_i2c_probe
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0-only
/*
* STMicroelectronics gyroscopes driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/common/st_sensors.h>
#include <linux/iio/common/st_sensors_i2c.h>
#include "st_gyro.h"
static const struct of_device_id st_gyro_of_match[] = {
{
.compatible = "st,l3g4200d-gyro",
.data = L3G4200D_GYRO_DEV_NAME,
},
{
.compatible = "st,lsm330d-gyro",
.data = LSM330D_GYRO_DEV_NAME,
},
{
.compatible = "st,lsm330dl-gyro",
.data = LSM330DL_GYRO_DEV_NAME,
},
{
.compatible = "st,lsm330dlc-gyro",
.data = LSM330DLC_GYRO_DEV_NAME,
},
{
.compatible = "st,l3gd20-gyro",
.data = L3GD20_GYRO_DEV_NAME,
},
{
.compatible = "st,l3gd20h-gyro",
.data = L3GD20H_GYRO_DEV_NAME,
},
{
.compatible = "st,l3g4is-gyro",
.data = L3G4IS_GYRO_DEV_NAME,
},
{
.compatible = "st,lsm330-gyro",
.data = LSM330_GYRO_DEV_NAME,
},
{
.compatible = "st,lsm9ds0-gyro",
.data = LSM9DS0_GYRO_DEV_NAME,
},
{ }
};
MODULE_DEVICE_TABLE(of, st_gyro_of_match);
static int st_gyro_i2c_probe(struct i2c_client *client)
{
const struct st_sensor_settings *settings;
struct st_sensor_data *gdata;
struct iio_dev *indio_dev;
int err;
st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
settings = st_gyro_get_settings(client->name);
if (!settings) {
dev_err(&client->dev, "device name %s not recognized.\n",
client->name);
return -ENODEV;
}
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
if (!indio_dev)
return -ENOMEM;
gdata = iio_priv(indio_dev);
gdata->sensor_settings = (struct st_sensor_settings *)settings;
err = st_sensors_i2c_configure(indio_dev, client);
if (err < 0)
return err;
err = st_sensors_power_enable(indio_dev);
if (err)
return err;
Annotation
- Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/mod_devicetable.h`, `linux/i2c.h`, `linux/iio/iio.h`, `linux/iio/common/st_sensors.h`, `linux/iio/common/st_sensors_i2c.h`, `st_gyro.h`.
- Detected declarations: `function st_gyro_i2c_probe`.
- Atlas domain: Driver Families / drivers/iio.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.