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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * sky81452.c SKY81452 MFD driver
- *
- * Copyright 2014 Skyworks Solutions Inc.
- * Author : Gyungoh Yoo <[email protected]>
- */
- #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[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 <[email protected]>");
- MODULE_LICENSE("GPL v2");
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