From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/mfd/da9055-i2c.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 drivers/mfd/da9055-i2c.c (limited to 'drivers/mfd/da9055-i2c.c') diff --git a/drivers/mfd/da9055-i2c.c b/drivers/mfd/da9055-i2c.c new file mode 100644 index 0000000000..9a5f51b60b --- /dev/null +++ b/drivers/mfd/da9055-i2c.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + /* I2C access for DA9055 PMICs. + * + * Copyright(c) 2012 Dialog Semiconductor Ltd. + * + * Author: David Dajun Chen + */ + +#include +#include +#include +#include +#include + +#include + +static int da9055_i2c_probe(struct i2c_client *i2c) +{ + struct da9055 *da9055; + int ret; + + da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); + if (!da9055) + return -ENOMEM; + + da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); + if (IS_ERR(da9055->regmap)) { + ret = PTR_ERR(da9055->regmap); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + da9055->dev = &i2c->dev; + da9055->chip_irq = i2c->irq; + + i2c_set_clientdata(i2c, da9055); + + return da9055_device_init(da9055); +} + +static void da9055_i2c_remove(struct i2c_client *i2c) +{ + struct da9055 *da9055 = i2c_get_clientdata(i2c); + + da9055_device_exit(da9055); +} + +/* + * DO NOT change the device Ids. The naming is intentionally specific as both + * the PMIC and CODEC parts of this chip are instantiated separately as I2C + * devices (both have configurable I2C addresses, and are to all intents and + * purposes separate). As a result there are specific DA9055 ids for PMIC + * and CODEC, which must be different to operate together. + */ +static const struct i2c_device_id da9055_i2c_id[] = { + {"da9055-pmic", 0}, + { } +}; +MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); + +static const struct of_device_id da9055_of_match[] = { + { .compatible = "dlg,da9055-pmic", }, + { } +}; + +static struct i2c_driver da9055_i2c_driver = { + .probe = da9055_i2c_probe, + .remove = da9055_i2c_remove, + .id_table = da9055_i2c_id, + .driver = { + .name = "da9055-pmic", + .of_match_table = da9055_of_match, + }, +}; + +static int __init da9055_i2c_init(void) +{ + int ret; + + ret = i2c_add_driver(&da9055_i2c_driver); + if (ret != 0) { + pr_err("DA9055 I2C registration failed %d\n", ret); + return ret; + } + + return 0; +} +subsys_initcall(da9055_i2c_init); + +static void __exit da9055_i2c_exit(void) +{ + i2c_del_driver(&da9055_i2c_driver); +} +module_exit(da9055_i2c_exit); + +MODULE_AUTHOR("David Dajun Chen "); +MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); -- cgit v1.2.3