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