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103 lines
2.3 KiB
103 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* I2C access for DA9055 PMICs. |
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* |
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* Copyright(c) 2012 Dialog Semiconductor Ltd. |
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* |
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* Author: David Dajun Chen <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/device.h> |
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#include <linux/i2c.h> |
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#include <linux/err.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/mfd/da9055/core.h> |
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static int da9055_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct da9055 *da9055; |
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int ret; |
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da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); |
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if (!da9055) |
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return -ENOMEM; |
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da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); |
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if (IS_ERR(da9055->regmap)) { |
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ret = PTR_ERR(da9055->regmap); |
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
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ret); |
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return ret; |
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} |
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da9055->dev = &i2c->dev; |
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da9055->chip_irq = i2c->irq; |
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i2c_set_clientdata(i2c, da9055); |
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return da9055_device_init(da9055); |
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} |
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static int da9055_i2c_remove(struct i2c_client *i2c) |
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{ |
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struct da9055 *da9055 = i2c_get_clientdata(i2c); |
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da9055_device_exit(da9055); |
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return 0; |
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} |
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/* |
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* DO NOT change the device Ids. The naming is intentionally specific as both |
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* the PMIC and CODEC parts of this chip are instantiated separately as I2C |
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* devices (both have configurable I2C addresses, and are to all intents and |
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* purposes separate). As a result there are specific DA9055 ids for PMIC |
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* and CODEC, which must be different to operate together. |
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*/ |
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static const struct i2c_device_id da9055_i2c_id[] = { |
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{"da9055-pmic", 0}, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); |
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static const struct of_device_id da9055_of_match[] = { |
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{ .compatible = "dlg,da9055-pmic", }, |
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{ } |
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}; |
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static struct i2c_driver da9055_i2c_driver = { |
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.probe = da9055_i2c_probe, |
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.remove = da9055_i2c_remove, |
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.id_table = da9055_i2c_id, |
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.driver = { |
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.name = "da9055-pmic", |
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.of_match_table = da9055_of_match, |
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}, |
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}; |
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static int __init da9055_i2c_init(void) |
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{ |
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int ret; |
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ret = i2c_add_driver(&da9055_i2c_driver); |
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if (ret != 0) { |
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pr_err("DA9055 I2C registration failed %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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subsys_initcall(da9055_i2c_init); |
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static void __exit da9055_i2c_exit(void) |
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{ |
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i2c_del_driver(&da9055_i2c_driver); |
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} |
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module_exit(da9055_i2c_exit); |
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MODULE_AUTHOR("David Dajun Chen <[email protected]>"); |
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MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); |
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MODULE_LICENSE("GPL");
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