// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/ * * Author: Keerthy <j-keerthy@ti.com> */ #include <linux/interrupt.h> #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/mfd/lp873x.h> static const struct regmap_config lp873x_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = LP873X_REG_MAX, }; static const struct mfd_cell lp873x_cells[] = { { .name = "lp873x-regulator", }, { .name = "lp873x-gpio", }, }; static int lp873x_probe(struct i2c_client *client) { struct lp873x *lp873; int ret; unsigned int otpid; lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); if (!lp873) return -ENOMEM; lp873->dev = &client->dev; lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); if (IS_ERR(lp873->regmap)) { ret = PTR_ERR(lp873->regmap); dev_err(lp873->dev, "Failed to initialize register map: %d\n", ret); return ret; } ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); if (ret) { dev_err(lp873->dev, "Failed to read OTP ID\n"); return ret; } lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; i2c_set_clientdata(client, lp873); ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); return ret; } static const struct of_device_id of_lp873x_match_table[] = { { .compatible = "ti,lp8733", }, { .compatible = "ti,lp8732", }, {} }; MODULE_DEVICE_TABLE(of, of_lp873x_match_table); static const struct i2c_device_id lp873x_id_table[] = { { "lp873x", 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, lp873x_id_table); static struct i2c_driver lp873x_driver = { .driver = { .name = "lp873x", .of_match_table = of_lp873x_match_table, }, .probe_new = lp873x_probe, .id_table = lp873x_id_table, }; module_i2c_driver(lp873x_driver); MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver"); MODULE_LICENSE("GPL v2");