| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* |
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| 3 | * MFD driver for Active-semi ACT8945a PMIC |
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| 4 | * |
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| 5 | * Copyright (C) 2015 Atmel Corporation. |
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| 6 | * |
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| 7 | * Author: Wenyou Yang <wenyou.yang@atmel.com> |
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| 8 | */ |
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| 9 | |
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| 10 | #include <linux/i2c.h> |
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| 11 | #include <linux/mfd/core.h> |
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| 12 | #include <linux/module.h> |
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| 13 | #include <linux/of.h> |
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| 14 | #include <linux/regmap.h> |
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| 15 | |
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| 16 | static const struct mfd_cell act8945a_devs[] = { |
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| 17 | { |
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| 18 | .name = "act8945a-regulator" , |
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| 19 | }, |
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| 20 | { |
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| 21 | .name = "act8945a-charger" , |
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| 22 | .of_compatible = "active-semi,act8945a-charger" , |
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| 23 | }, |
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| 24 | }; |
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| 25 | |
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| 26 | static const struct regmap_config act8945a_regmap_config = { |
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| 27 | .reg_bits = 8, |
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| 28 | .val_bits = 8, |
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| 29 | }; |
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| 30 | |
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| 31 | static int act8945a_i2c_probe(struct i2c_client *i2c) |
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| 32 | { |
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| 33 | int ret; |
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| 34 | struct regmap *regmap; |
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| 35 | |
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| 36 | regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config); |
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| 37 | if (IS_ERR(ptr: regmap)) { |
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| 38 | ret = PTR_ERR(ptr: regmap); |
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| 39 | dev_err(&i2c->dev, "regmap init failed: %d\n" , ret); |
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| 40 | return ret; |
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| 41 | } |
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| 42 | |
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| 43 | i2c_set_clientdata(client: i2c, data: regmap); |
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| 44 | |
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| 45 | ret = devm_mfd_add_devices(dev: &i2c->dev, PLATFORM_DEVID_NONE, |
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| 46 | cells: act8945a_devs, ARRAY_SIZE(act8945a_devs), |
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| 47 | NULL, irq_base: 0, NULL); |
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| 48 | if (ret) { |
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| 49 | dev_err(&i2c->dev, "Failed to add sub devices\n" ); |
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| 50 | return ret; |
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| 51 | } |
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| 52 | |
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| 53 | return 0; |
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| 54 | } |
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| 55 | |
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| 56 | static const struct i2c_device_id act8945a_i2c_id[] = { |
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| 57 | { "act8945a" , 0 }, |
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| 58 | {} |
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| 59 | }; |
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| 60 | MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id); |
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| 61 | |
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| 62 | static const struct of_device_id act8945a_of_match[] = { |
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| 63 | { .compatible = "active-semi,act8945a" , }, |
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| 64 | {}, |
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| 65 | }; |
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| 66 | MODULE_DEVICE_TABLE(of, act8945a_of_match); |
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| 67 | |
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| 68 | static struct i2c_driver act8945a_i2c_driver = { |
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| 69 | .driver = { |
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| 70 | .name = "act8945a" , |
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| 71 | .of_match_table = act8945a_of_match, |
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| 72 | }, |
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| 73 | .probe = act8945a_i2c_probe, |
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| 74 | .id_table = act8945a_i2c_id, |
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| 75 | }; |
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| 76 | |
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| 77 | static int __init act8945a_i2c_init(void) |
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| 78 | { |
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| 79 | return i2c_add_driver(&act8945a_i2c_driver); |
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| 80 | } |
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| 81 | subsys_initcall(act8945a_i2c_init); |
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| 82 | |
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| 83 | static void __exit act8945a_i2c_exit(void) |
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| 84 | { |
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| 85 | i2c_del_driver(driver: &act8945a_i2c_driver); |
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| 86 | } |
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| 87 | module_exit(act8945a_i2c_exit); |
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| 88 | |
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| 89 | MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver" ); |
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| 90 | MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>" ); |
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| 91 | MODULE_LICENSE("GPL" ); |
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| 92 | |
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