2 * Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/
4 * Author: Keerthy <j-keerthy@ti.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 #include <linux/interrupt.h>
17 #include <linux/mfd/core.h>
18 #include <linux/module.h>
19 #include <linux/of_device.h>
20 #include <linux/regmap.h>
22 #include <linux/mfd/lp873x.h>
24 static const struct regmap_config lp873x_regmap_config = {
27 .max_register = LP873X_REG_MAX,
30 static const struct mfd_cell lp873x_cells[] = {
31 { .name = "lp873x-regulator", },
32 { .name = "lp873x-gpio", },
35 static int lp873x_probe(struct i2c_client *client,
36 const struct i2c_device_id *ids)
42 lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
46 lp873->dev = &client->dev;
48 lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
49 if (IS_ERR(lp873->regmap)) {
50 ret = PTR_ERR(lp873->regmap);
52 "Failed to initialize register map: %d\n", ret);
56 ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
58 dev_err(lp873->dev, "Failed to read OTP ID\n");
62 lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
64 i2c_set_clientdata(client, lp873);
66 ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
67 ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
72 static const struct of_device_id of_lp873x_match_table[] = {
73 { .compatible = "ti,lp8733", },
74 { .compatible = "ti,lp8732", },
77 MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
79 static const struct i2c_device_id lp873x_id_table[] = {
83 MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
85 static struct i2c_driver lp873x_driver = {
88 .of_match_table = of_lp873x_match_table,
90 .probe = lp873x_probe,
91 .id_table = lp873x_id_table,
93 module_i2c_driver(lp873x_driver);
95 MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
96 MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver");
97 MODULE_LICENSE("GPL v2");