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a10e763b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1e349600 | 2 | /* |
4f4ed454 | 3 | * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/ |
1e349600 K |
4 | * |
5 | * Author: Keerthy <j-keerthy@ti.com> | |
1e349600 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/lp87565.h> | |
15 | ||
16 | static const struct regmap_config lp87565_regmap_config = { | |
17 | .reg_bits = 8, | |
18 | .val_bits = 8, | |
19 | .max_register = LP87565_REG_MAX, | |
20 | }; | |
21 | ||
22 | static const struct mfd_cell lp87565_cells[] = { | |
23 | { .name = "lp87565-q1-regulator", }, | |
24 | { .name = "lp87565-q1-gpio", }, | |
25 | }; | |
26 | ||
27 | static const struct of_device_id of_lp87565_match_table[] = { | |
28 | { .compatible = "ti,lp87565", }, | |
29 | { | |
30 | .compatible = "ti,lp87565-q1", | |
31 | .data = (void *)LP87565_DEVICE_TYPE_LP87565_Q1, | |
32 | }, | |
013e868b K |
33 | { |
34 | .compatible = "ti,lp87561-q1", | |
35 | .data = (void *)LP87565_DEVICE_TYPE_LP87561_Q1, | |
36 | }, | |
1e349600 K |
37 | {} |
38 | }; | |
39 | MODULE_DEVICE_TABLE(of, of_lp87565_match_table); | |
40 | ||
41 | static int lp87565_probe(struct i2c_client *client, | |
42 | const struct i2c_device_id *ids) | |
43 | { | |
44 | struct lp87565 *lp87565; | |
45 | const struct of_device_id *of_id; | |
46 | int ret; | |
47 | unsigned int otpid; | |
48 | ||
49 | lp87565 = devm_kzalloc(&client->dev, sizeof(*lp87565), GFP_KERNEL); | |
50 | if (!lp87565) | |
51 | return -ENOMEM; | |
52 | ||
53 | lp87565->dev = &client->dev; | |
54 | ||
55 | lp87565->regmap = devm_regmap_init_i2c(client, &lp87565_regmap_config); | |
56 | if (IS_ERR(lp87565->regmap)) { | |
57 | ret = PTR_ERR(lp87565->regmap); | |
58 | dev_err(lp87565->dev, | |
59 | "Failed to initialize register map: %d\n", ret); | |
60 | return ret; | |
61 | } | |
62 | ||
63 | ret = regmap_read(lp87565->regmap, LP87565_REG_OTP_REV, &otpid); | |
64 | if (ret) { | |
65 | dev_err(lp87565->dev, "Failed to read OTP ID\n"); | |
66 | return ret; | |
67 | } | |
68 | ||
69 | lp87565->rev = otpid & LP87565_OTP_REV_OTP_ID; | |
70 | ||
71 | of_id = of_match_device(of_lp87565_match_table, &client->dev); | |
72 | if (of_id) | |
73 | lp87565->dev_type = (enum lp87565_device_type)of_id->data; | |
74 | ||
75 | i2c_set_clientdata(client, lp87565); | |
76 | ||
ea3993a9 AL |
77 | return devm_mfd_add_devices(lp87565->dev, PLATFORM_DEVID_AUTO, |
78 | lp87565_cells, ARRAY_SIZE(lp87565_cells), | |
79 | NULL, 0, NULL); | |
1e349600 K |
80 | } |
81 | ||
82 | static const struct i2c_device_id lp87565_id_table[] = { | |
83 | { "lp87565-q1", 0 }, | |
84 | { }, | |
85 | }; | |
86 | MODULE_DEVICE_TABLE(i2c, lp87565_id_table); | |
87 | ||
88 | static struct i2c_driver lp87565_driver = { | |
89 | .driver = { | |
90 | .name = "lp87565", | |
91 | .of_match_table = of_lp87565_match_table, | |
92 | }, | |
93 | .probe = lp87565_probe, | |
94 | .id_table = lp87565_id_table, | |
95 | }; | |
96 | module_i2c_driver(lp87565_driver); | |
97 | ||
98 | MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); | |
99 | MODULE_DESCRIPTION("lp87565 chip family Multi-Function Device driver"); | |
100 | MODULE_LICENSE("GPL v2"); |