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2aec85b2 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
dc21c7ad | 2 | /* |
4f4ed454 | 3 | * Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/ |
dc21c7ad K |
4 | * |
5 | * Author: Keerthy <j-keerthy@ti.com> | |
dc21c7ad K |
6 | */ |
7 | ||
8 | #include <linux/interrupt.h> | |
9 | #include <linux/mfd/core.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/of_device.h> | |
12 | #include <linux/regmap.h> | |
13 | ||
14 | #include <linux/mfd/lp873x.h> | |
15 | ||
16 | static const struct regmap_config lp873x_regmap_config = { | |
17 | .reg_bits = 8, | |
18 | .val_bits = 8, | |
19 | .max_register = LP873X_REG_MAX, | |
20 | }; | |
21 | ||
22 | static const struct mfd_cell lp873x_cells[] = { | |
23 | { .name = "lp873x-regulator", }, | |
24 | { .name = "lp873x-gpio", }, | |
25 | }; | |
26 | ||
27 | static int lp873x_probe(struct i2c_client *client, | |
28 | const struct i2c_device_id *ids) | |
29 | { | |
30 | struct lp873x *lp873; | |
31 | int ret; | |
32 | unsigned int otpid; | |
33 | ||
34 | lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); | |
35 | if (!lp873) | |
36 | return -ENOMEM; | |
37 | ||
38 | lp873->dev = &client->dev; | |
39 | ||
40 | lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); | |
41 | if (IS_ERR(lp873->regmap)) { | |
42 | ret = PTR_ERR(lp873->regmap); | |
43 | dev_err(lp873->dev, | |
44 | "Failed to initialize register map: %d\n", ret); | |
45 | return ret; | |
46 | } | |
47 | ||
dc21c7ad K |
48 | ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); |
49 | if (ret) { | |
50 | dev_err(lp873->dev, "Failed to read OTP ID\n"); | |
51 | return ret; | |
52 | } | |
53 | ||
54 | lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; | |
55 | ||
56 | i2c_set_clientdata(client, lp873); | |
57 | ||
58 | ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, | |
59 | ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); | |
60 | ||
61 | return ret; | |
62 | } | |
63 | ||
64 | static const struct of_device_id of_lp873x_match_table[] = { | |
65 | { .compatible = "ti,lp8733", }, | |
66 | { .compatible = "ti,lp8732", }, | |
67 | {} | |
68 | }; | |
69 | MODULE_DEVICE_TABLE(of, of_lp873x_match_table); | |
70 | ||
71 | static const struct i2c_device_id lp873x_id_table[] = { | |
72 | { "lp873x", 0 }, | |
73 | { }, | |
74 | }; | |
75 | MODULE_DEVICE_TABLE(i2c, lp873x_id_table); | |
76 | ||
77 | static struct i2c_driver lp873x_driver = { | |
78 | .driver = { | |
79 | .name = "lp873x", | |
80 | .of_match_table = of_lp873x_match_table, | |
81 | }, | |
82 | .probe = lp873x_probe, | |
83 | .id_table = lp873x_id_table, | |
84 | }; | |
85 | module_i2c_driver(lp873x_driver); | |
86 | ||
87 | MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); | |
88 | MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver"); | |
89 | MODULE_LICENSE("GPL v2"); |