// SPDX-License-Identifier: GPL-2.0-only /* * sky81452.c SKY81452 MFD driver * * Copyright 2014 Skyworks Solutions Inc. * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/mfd/core.h> #include <linux/mfd/sky81452.h> static const struct regmap_config sky81452_config = { .reg_bits = 8, .val_bits = 8, }; static int sky81452_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; const struct sky81452_platform_data *pdata = dev_get_platdata(dev); struct mfd_cell cells[2]; struct regmap *regmap; int ret; if (!pdata) { pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; } regmap = devm_regmap_init_i2c(client, &sky81452_config); if (IS_ERR(regmap)) { dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap)); return PTR_ERR(regmap); } i2c_set_clientdata(client, regmap); memset(cells, 0, sizeof(cells)); cells[0].name = "sky81452-backlight"; cells[0].of_compatible = "skyworks,sky81452-backlight"; cells[0].platform_data = pdata->bl_pdata; cells[0].pdata_size = sizeof(*pdata->bl_pdata); cells[1].name = "sky81452-regulator"; cells[1].platform_data = pdata->regulator_init_data; cells[1].pdata_size = sizeof(*pdata->regulator_init_data); ret = devm_mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), NULL, 0, NULL); if (ret) dev_err(dev, "failed to add child devices. err=%d\n", ret); return ret; } static const struct i2c_device_id sky81452_ids[] = { { "sky81452" }, { } }; MODULE_DEVICE_TABLE(i2c, sky81452_ids); #ifdef CONFIG_OF static const struct of_device_id sky81452_of_match[] = { { .compatible = "skyworks,sky81452", }, { } }; MODULE_DEVICE_TABLE(of, sky81452_of_match); #endif static struct i2c_driver sky81452_driver = { .driver = { .name = "sky81452", .of_match_table = of_match_ptr(sky81452_of_match), }, .probe = sky81452_probe, .id_table = sky81452_ids, }; module_i2c_driver(sky81452_driver); MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver"); MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>"); MODULE_LICENSE("GPL v2");