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iio: imu: inv_icm45600: add I3C driver for inv_icm45600 driver

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Add I3C driver for InvenSense ICM-45600 devices.

Signed-off-by: Remi Buisson <remi.buisson@tdk.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Remi Buisson
2025-10-07 07:20:09 +00:00
committed by Jonathan Cameron
parent b27492d50d
commit 1bef24e900
3 changed files with 102 additions and 0 deletions
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21
drivers/iio/imu/inv_icm45600/Kconfig
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@@ -47,3 +47,24 @@ config INV_ICM45600_SPI
This driver can be built as a module. The module will be called
inv-icm45600-spi.
config INV_ICM45600_I3C
tristate "InvenSense ICM-456xx I3C driver"
depends on I3C
select INV_ICM45600
select REGMAP_I3C
help
This driver supports the InvenSense ICM-456xx motion tracking
devices over I3C.
Supported devices:
- ICM-45605
- ICM-45606
- ICM-45608
- ICM-45634
- ICM-45686
- ICM-45687
- ICM-45688-P
- ICM-45689
This driver can be built as a module. The module will be called
inv-icm45600-i3c.

3
drivers/iio/imu/inv_icm45600/Makefile
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@@ -11,3 +11,6 @@ inv-icm45600-i2c-y += inv_icm45600_i2c.o
obj-$(CONFIG_INV_ICM45600_SPI) += inv-icm45600-spi.o
inv-icm45600-spi-y += inv_icm45600_spi.o
obj-$(CONFIG_INV_ICM45600_I3C) += inv-icm45600-i3c.o
inv-icm45600-i3c-y += inv_icm45600_i3c.o

78
drivers/iio/imu/inv_icm45600/inv_icm45600_i3c.c Normal file
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@@ -0,0 +1,78 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright (C) 2025 InvenSense, Inc. */
#include <linux/err.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/i3c/device.h>
#include <linux/i3c/master.h>
#include "inv_icm45600.h"
static const struct regmap_config inv_icm45600_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static const struct i3c_device_id inv_icm45600_i3c_ids[] = {
I3C_DEVICE_EXTRA_INFO(0x0235, 0x0000, 0x0011, (void *)NULL),
I3C_DEVICE_EXTRA_INFO(0x0235, 0x0000, 0x0084, (void *)NULL),
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i3c, inv_icm45600_i3c_ids);
static const struct inv_icm45600_chip_info *i3c_chip_info[] = {
&inv_icm45605_chip_info,
&inv_icm45606_chip_info,
&inv_icm45608_chip_info,
&inv_icm45634_chip_info,
&inv_icm45686_chip_info,
&inv_icm45687_chip_info,
&inv_icm45688p_chip_info,
&inv_icm45689_chip_info,
};
static int inv_icm45600_i3c_probe(struct i3c_device *i3cdev)
{
int ret;
unsigned int whoami;
struct regmap *regmap;
const int nb_chip = ARRAY_SIZE(i3c_chip_info);
int chip;
regmap = devm_regmap_init_i3c(i3cdev, &inv_icm45600_regmap_config);
if (IS_ERR(regmap))
return dev_err_probe(&i3cdev->dev, PTR_ERR(regmap),
"Failed to register i3c regmap %ld\n", PTR_ERR(regmap));
ret = regmap_read(regmap, INV_ICM45600_REG_WHOAMI, &whoami);
if (ret)
return dev_err_probe(&i3cdev->dev, ret, "Failed to read part id %d\n", whoami);
for (chip = 0; chip < nb_chip; chip++) {
if (whoami == i3c_chip_info[chip]->whoami)
break;
}
if (chip == nb_chip)
dev_err_probe(&i3cdev->dev, -ENODEV, "Failed to match part id %d\n", whoami);
return inv_icm45600_core_probe(regmap, i3c_chip_info[chip], false, NULL);
}
static struct i3c_driver inv_icm45600_driver = {
.driver = {
.name = "inv_icm45600_i3c",
.pm = pm_sleep_ptr(&inv_icm45600_pm_ops),
},
.probe = inv_icm45600_i3c_probe,
.id_table = inv_icm45600_i3c_ids,
};
module_i3c_driver(inv_icm45600_driver);
MODULE_AUTHOR("Remi Buisson <remi.buisson@tdk.com>");
MODULE_DESCRIPTION("InvenSense ICM-456xx i3c driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("IIO_ICM45600");