1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Keerthy <j-keerthy@ti.com>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/interrupt.h>
9*4882a593Smuzhiyun #include <linux/mfd/core.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/of_device.h>
12*4882a593Smuzhiyun #include <linux/regmap.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <linux/mfd/lp87565.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun static const struct regmap_config lp87565_regmap_config = {
17*4882a593Smuzhiyun .reg_bits = 8,
18*4882a593Smuzhiyun .val_bits = 8,
19*4882a593Smuzhiyun .max_register = LP87565_REG_MAX,
20*4882a593Smuzhiyun };
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun static const struct mfd_cell lp87565_cells[] = {
23*4882a593Smuzhiyun { .name = "lp87565-q1-regulator", },
24*4882a593Smuzhiyun { .name = "lp87565-q1-gpio", },
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun static const struct of_device_id of_lp87565_match_table[] = {
28*4882a593Smuzhiyun { .compatible = "ti,lp87565", },
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun .compatible = "ti,lp87524-q1",
31*4882a593Smuzhiyun .data = (void *)LP87565_DEVICE_TYPE_LP87524_Q1,
32*4882a593Smuzhiyun },
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun .compatible = "ti,lp87565-q1",
35*4882a593Smuzhiyun .data = (void *)LP87565_DEVICE_TYPE_LP87565_Q1,
36*4882a593Smuzhiyun },
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun .compatible = "ti,lp87561-q1",
39*4882a593Smuzhiyun .data = (void *)LP87565_DEVICE_TYPE_LP87561_Q1,
40*4882a593Smuzhiyun },
41*4882a593Smuzhiyun {}
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, of_lp87565_match_table);
44*4882a593Smuzhiyun
lp87565_probe(struct i2c_client * client,const struct i2c_device_id * ids)45*4882a593Smuzhiyun static int lp87565_probe(struct i2c_client *client,
46*4882a593Smuzhiyun const struct i2c_device_id *ids)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun struct lp87565 *lp87565;
49*4882a593Smuzhiyun const struct of_device_id *of_id;
50*4882a593Smuzhiyun int ret;
51*4882a593Smuzhiyun unsigned int otpid;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun lp87565 = devm_kzalloc(&client->dev, sizeof(*lp87565), GFP_KERNEL);
54*4882a593Smuzhiyun if (!lp87565)
55*4882a593Smuzhiyun return -ENOMEM;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun lp87565->dev = &client->dev;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun lp87565->regmap = devm_regmap_init_i2c(client, &lp87565_regmap_config);
60*4882a593Smuzhiyun if (IS_ERR(lp87565->regmap)) {
61*4882a593Smuzhiyun ret = PTR_ERR(lp87565->regmap);
62*4882a593Smuzhiyun dev_err(lp87565->dev,
63*4882a593Smuzhiyun "Failed to initialize register map: %d\n", ret);
64*4882a593Smuzhiyun return ret;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun ret = regmap_read(lp87565->regmap, LP87565_REG_OTP_REV, &otpid);
68*4882a593Smuzhiyun if (ret) {
69*4882a593Smuzhiyun dev_err(lp87565->dev, "Failed to read OTP ID\n");
70*4882a593Smuzhiyun return ret;
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun lp87565->rev = otpid & LP87565_OTP_REV_OTP_ID;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun of_id = of_match_device(of_lp87565_match_table, &client->dev);
76*4882a593Smuzhiyun if (of_id)
77*4882a593Smuzhiyun lp87565->dev_type = (enum lp87565_device_type)of_id->data;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun i2c_set_clientdata(client, lp87565);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun return devm_mfd_add_devices(lp87565->dev, PLATFORM_DEVID_AUTO,
82*4882a593Smuzhiyun lp87565_cells, ARRAY_SIZE(lp87565_cells),
83*4882a593Smuzhiyun NULL, 0, NULL);
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun static const struct i2c_device_id lp87565_id_table[] = {
87*4882a593Smuzhiyun { "lp87565-q1", 0 },
88*4882a593Smuzhiyun { },
89*4882a593Smuzhiyun };
90*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, lp87565_id_table);
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun static struct i2c_driver lp87565_driver = {
93*4882a593Smuzhiyun .driver = {
94*4882a593Smuzhiyun .name = "lp87565",
95*4882a593Smuzhiyun .of_match_table = of_lp87565_match_table,
96*4882a593Smuzhiyun },
97*4882a593Smuzhiyun .probe = lp87565_probe,
98*4882a593Smuzhiyun .id_table = lp87565_id_table,
99*4882a593Smuzhiyun };
100*4882a593Smuzhiyun module_i2c_driver(lp87565_driver);
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
103*4882a593Smuzhiyun MODULE_DESCRIPTION("lp87565 chip family Multi-Function Device driver");
104*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
105