projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| caab277b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2698dc22 GY |
2 | /* |
| 3 | * sky81452.c SKY81452 MFD driver | |
| 4 | * | |
| 5 | * Copyright 2014 Skyworks Solutions Inc. | |
| 6 | * Author : Gyungoh Yoo <[email protected]> | |
| 2698dc22 GY |
7 | */ |
| 8 | ||
| 9 | #include <linux/kernel.h> | |
| 10 | #include <linux/module.h> | |
| 11 | #include <linux/init.h> | |
| 12 | #include <linux/err.h> | |
| 13 | #include <linux/slab.h> | |
| 14 | #include <linux/i2c.h> | |
| 15 | #include <linux/regmap.h> | |
| 16 | #include <linux/mfd/core.h> | |
| 17 | #include <linux/mfd/sky81452.h> | |
| 18 | ||
| 19 | static const struct regmap_config sky81452_config = { | |
| 20 | .reg_bits = 8, | |
| 21 | .val_bits = 8, | |
| 22 | }; | |
| 23 | ||
| 81943ca2 | 24 | static int sky81452_probe(struct i2c_client *client) |
| 2698dc22 GY |
25 | { |
| 26 | struct device *dev = &client->dev; | |
| 27 | const struct sky81452_platform_data *pdata = dev_get_platdata(dev); | |
| 28 | struct mfd_cell cells[2]; | |
| 29 | struct regmap *regmap; | |
| 30 | int ret; | |
| 31 | ||
| 32 | if (!pdata) { | |
| 33 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
| 34 | if (!pdata) | |
| 35 | return -ENOMEM; | |
| 36 | } | |
| 37 | ||
| 38 | regmap = devm_regmap_init_i2c(client, &sky81452_config); | |
| 39 | if (IS_ERR(regmap)) { | |
| 40 | dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap)); | |
| 41 | return PTR_ERR(regmap); | |
| 42 | } | |
| 43 | ||
| 44 | i2c_set_clientdata(client, regmap); | |
| 45 | ||
| 46 | memset(cells, 0, sizeof(cells)); | |
| 47 | cells[0].name = "sky81452-backlight"; | |
| 48 | cells[0].of_compatible = "skyworks,sky81452-backlight"; | |
| 2698dc22 GY |
49 | cells[1].name = "sky81452-regulator"; |
| 50 | cells[1].platform_data = pdata->regulator_init_data; | |
| 51 | cells[1].pdata_size = sizeof(*pdata->regulator_init_data); | |
| 52 | ||
| 69633bea LD |
53 | ret = devm_mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), |
| 54 | NULL, 0, NULL); | |
| 2698dc22 GY |
55 | if (ret) |
| 56 | dev_err(dev, "failed to add child devices. err=%d\n", ret); | |
| 57 | ||
| 58 | return ret; | |
| 59 | } | |
| 60 | ||
| 2698dc22 GY |
61 | static const struct i2c_device_id sky81452_ids[] = { |
| 62 | { "sky81452" }, | |
| 63 | { } | |
| 64 | }; | |
| 65 | MODULE_DEVICE_TABLE(i2c, sky81452_ids); | |
| 66 | ||
| 67 | #ifdef CONFIG_OF | |
| 68 | static const struct of_device_id sky81452_of_match[] = { | |
| 69 | { .compatible = "skyworks,sky81452", }, | |
| 70 | { } | |
| 71 | }; | |
| 72 | MODULE_DEVICE_TABLE(of, sky81452_of_match); | |
| 73 | #endif | |
| 74 | ||
| 75 | static struct i2c_driver sky81452_driver = { | |
| 76 | .driver = { | |
| 77 | .name = "sky81452", | |
| 78 | .of_match_table = of_match_ptr(sky81452_of_match), | |
| 79 | }, | |
| 9816d859 | 80 | .probe = sky81452_probe, |
| 2698dc22 GY |
81 | .id_table = sky81452_ids, |
| 82 | }; | |
| 83 | ||
| 84 | module_i2c_driver(sky81452_driver); | |
| 85 | ||
| 86 | MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver"); | |
| 87 | MODULE_AUTHOR("Gyungoh Yoo <[email protected]>"); | |
| 88 | MODULE_LICENSE("GPL v2"); |