1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Copyright (C) 2025 InvenSense, Inc. */
3
4 #include <linux/err.h>
5 #include <linux/module.h>
6 #include <linux/regmap.h>
7
8 #include <linux/i3c/device.h>
9 #include <linux/i3c/master.h>
10
11 #include "inv_icm45600.h"
12
13 static const struct regmap_config inv_icm45600_regmap_config = {
14 .reg_bits = 8,
15 .val_bits = 8,
16 };
17
18 static const struct i3c_device_id inv_icm45600_i3c_ids[] = {
19 I3C_DEVICE_EXTRA_INFO(0x0235, 0x0000, 0x0011, (void *)NULL),
20 I3C_DEVICE_EXTRA_INFO(0x0235, 0x0000, 0x0084, (void *)NULL),
21 { /* sentinel */ }
22 };
23 MODULE_DEVICE_TABLE(i3c, inv_icm45600_i3c_ids);
24
25 static const struct inv_icm45600_chip_info *i3c_chip_info[] = {
26 &inv_icm45605_chip_info,
27 &inv_icm45606_chip_info,
28 &inv_icm45608_chip_info,
29 &inv_icm45634_chip_info,
30 &inv_icm45686_chip_info,
31 &inv_icm45687_chip_info,
32 &inv_icm45688p_chip_info,
33 &inv_icm45689_chip_info,
34 };
35
inv_icm45600_i3c_probe(struct i3c_device * i3cdev)36 static int inv_icm45600_i3c_probe(struct i3c_device *i3cdev)
37 {
38 int ret;
39 unsigned int whoami;
40 struct regmap *regmap;
41 const int nb_chip = ARRAY_SIZE(i3c_chip_info);
42 int chip;
43
44 regmap = devm_regmap_init_i3c(i3cdev, &inv_icm45600_regmap_config);
45 if (IS_ERR(regmap))
46 return dev_err_probe(&i3cdev->dev, PTR_ERR(regmap),
47 "Failed to register i3c regmap %ld\n", PTR_ERR(regmap));
48
49 ret = regmap_read(regmap, INV_ICM45600_REG_WHOAMI, &whoami);
50 if (ret)
51 return dev_err_probe(&i3cdev->dev, ret, "Failed to read part id %d\n", whoami);
52
53 for (chip = 0; chip < nb_chip; chip++) {
54 if (whoami == i3c_chip_info[chip]->whoami)
55 break;
56 }
57
58 if (chip == nb_chip)
59 return dev_err_probe(&i3cdev->dev, -ENODEV,
60 "Failed to match part id %d\n", whoami);
61
62 return inv_icm45600_core_probe(regmap, i3c_chip_info[chip], false, NULL);
63 }
64
65 static struct i3c_driver inv_icm45600_driver = {
66 .driver = {
67 .name = "inv_icm45600_i3c",
68 .pm = pm_sleep_ptr(&inv_icm45600_pm_ops),
69 },
70 .probe = inv_icm45600_i3c_probe,
71 .id_table = inv_icm45600_i3c_ids,
72 };
73 module_i3c_driver(inv_icm45600_driver);
74
75 MODULE_AUTHOR("Remi Buisson <remi.buisson@tdk.com>");
76 MODULE_DESCRIPTION("InvenSense ICM-456xx i3c driver");
77 MODULE_LICENSE("GPL");
78 MODULE_IMPORT_NS("IIO_ICM45600");
79