// SPDX-License-Identifier: GPL-2.0+ /* * MP2629 parent driver for ADC and battery charger * * Copyright 2020 Monolithic Power Systems, Inc * * Author: Saravanan Sekar <sravanhome@gmail.com> */ #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/mfd/core.h> #include <linux/mfd/mp2629.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> static const struct mfd_cell mp2629_cell[] = { { .name = "mp2629_adc", .of_compatible = "mps,mp2629_adc", }, { .name = "mp2629_charger", .of_compatible = "mps,mp2629_charger", } }; static const struct regmap_config mp2629_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 0x17, }; static int mp2629_probe(struct i2c_client *client) { struct mp2629_data *ddata; int ret; ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; ddata->dev = &client->dev; i2c_set_clientdata(client, ddata); ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config); if (IS_ERR(ddata->regmap)) { dev_err(ddata->dev, "Failed to allocate regmap\n"); return PTR_ERR(ddata->regmap); } ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell, ARRAY_SIZE(mp2629_cell), NULL, 0, NULL); if (ret) dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret); return ret; } static const struct of_device_id mp2629_of_match[] = { { .compatible = "mps,mp2629"}, { } }; MODULE_DEVICE_TABLE(of, mp2629_of_match); static struct i2c_driver mp2629_driver = { .driver = { .name = "mp2629", .of_match_table = mp2629_of_match, }, .probe = mp2629_probe, }; module_i2c_driver(mp2629_driver); MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>"); MODULE_DESCRIPTION("MP2629 Battery charger parent driver"); MODULE_LICENSE("GPL");