^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* I2C access for DA9055 PMICs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright(c) 2012 Dialog Semiconductor Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: David Dajun Chen <dchen@diasemi.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/da9055/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static int da9055_i2c_probe(struct i2c_client *i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct da9055 *da9055;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) if (!da9055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (IS_ERR(da9055->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ret = PTR_ERR(da9055->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) da9055->dev = &i2c->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) da9055->chip_irq = i2c->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) i2c_set_clientdata(i2c, da9055);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return da9055_device_init(da9055);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static int da9055_i2c_remove(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct da9055 *da9055 = i2c_get_clientdata(i2c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) da9055_device_exit(da9055);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * DO NOT change the device Ids. The naming is intentionally specific as both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * the PMIC and CODEC parts of this chip are instantiated separately as I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * devices (both have configurable I2C addresses, and are to all intents and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * purposes separate). As a result there are specific DA9055 ids for PMIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * and CODEC, which must be different to operate together.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static const struct i2c_device_id da9055_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {"da9055-pmic", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static const struct of_device_id da9055_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) { .compatible = "dlg,da9055-pmic", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static struct i2c_driver da9055_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .probe = da9055_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .remove = da9055_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .id_table = da9055_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .name = "da9055-pmic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .of_match_table = of_match_ptr(da9055_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static int __init da9055_i2c_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ret = i2c_add_driver(&da9055_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) pr_err("DA9055 I2C registration failed %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) subsys_initcall(da9055_i2c_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static void __exit da9055_i2c_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) i2c_del_driver(&da9055_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) module_exit(da9055_i2c_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags