12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2037b60f2SMatt Porter /*
3037b60f2SMatt Porter * Broadcom BCM590xx PMU
4037b60f2SMatt Porter *
5037b60f2SMatt Porter * Copyright 2014 Linaro Limited
6037b60f2SMatt Porter * Author: Matt Porter <mporter@linaro.org>
7037b60f2SMatt Porter */
8037b60f2SMatt Porter
9037b60f2SMatt Porter #include <linux/err.h>
10037b60f2SMatt Porter #include <linux/i2c.h>
11037b60f2SMatt Porter #include <linux/init.h>
12037b60f2SMatt Porter #include <linux/mfd/bcm590xx.h>
13037b60f2SMatt Porter #include <linux/mfd/core.h>
14037b60f2SMatt Porter #include <linux/module.h>
15037b60f2SMatt Porter #include <linux/moduleparam.h>
16037b60f2SMatt Porter #include <linux/of.h>
17037b60f2SMatt Porter #include <linux/regmap.h>
18037b60f2SMatt Porter #include <linux/slab.h>
19037b60f2SMatt Porter
20037b60f2SMatt Porter static const struct mfd_cell bcm590xx_devs[] = {
21037b60f2SMatt Porter {
22037b60f2SMatt Porter .name = "bcm590xx-vregs",
23037b60f2SMatt Porter },
24037b60f2SMatt Porter };
25037b60f2SMatt Porter
269e1e7263SMatt Porter static const struct regmap_config bcm590xx_regmap_config_pri = {
27037b60f2SMatt Porter .reg_bits = 8,
28037b60f2SMatt Porter .val_bits = 8,
299e1e7263SMatt Porter .max_register = BCM590XX_MAX_REGISTER_PRI,
30037b60f2SMatt Porter .cache_type = REGCACHE_RBTREE,
31037b60f2SMatt Porter };
32037b60f2SMatt Porter
339e1e7263SMatt Porter static const struct regmap_config bcm590xx_regmap_config_sec = {
349e1e7263SMatt Porter .reg_bits = 8,
359e1e7263SMatt Porter .val_bits = 8,
369e1e7263SMatt Porter .max_register = BCM590XX_MAX_REGISTER_SEC,
379e1e7263SMatt Porter .cache_type = REGCACHE_RBTREE,
389e1e7263SMatt Porter };
399e1e7263SMatt Porter
bcm590xx_i2c_probe(struct i2c_client * i2c_pri)40ace24876SUwe Kleine-König static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri)
41037b60f2SMatt Porter {
42037b60f2SMatt Porter struct bcm590xx *bcm590xx;
43037b60f2SMatt Porter int ret;
44037b60f2SMatt Porter
459e1e7263SMatt Porter bcm590xx = devm_kzalloc(&i2c_pri->dev, sizeof(*bcm590xx), GFP_KERNEL);
46037b60f2SMatt Porter if (!bcm590xx)
47037b60f2SMatt Porter return -ENOMEM;
48037b60f2SMatt Porter
499e1e7263SMatt Porter i2c_set_clientdata(i2c_pri, bcm590xx);
509e1e7263SMatt Porter bcm590xx->dev = &i2c_pri->dev;
519e1e7263SMatt Porter bcm590xx->i2c_pri = i2c_pri;
52037b60f2SMatt Porter
539e1e7263SMatt Porter bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
549e1e7263SMatt Porter &bcm590xx_regmap_config_pri);
559e1e7263SMatt Porter if (IS_ERR(bcm590xx->regmap_pri)) {
569e1e7263SMatt Porter ret = PTR_ERR(bcm590xx->regmap_pri);
579e1e7263SMatt Porter dev_err(&i2c_pri->dev, "primary regmap init failed: %d\n", ret);
58037b60f2SMatt Porter return ret;
59037b60f2SMatt Porter }
60037b60f2SMatt Porter
619e1e7263SMatt Porter /* Secondary I2C slave address is the base address with A(2) asserted */
6298f0c05fSWolfram Sang bcm590xx->i2c_sec = i2c_new_dummy_device(i2c_pri->adapter,
639e1e7263SMatt Porter i2c_pri->addr | BIT(2));
6498f0c05fSWolfram Sang if (IS_ERR(bcm590xx->i2c_sec)) {
659e1e7263SMatt Porter dev_err(&i2c_pri->dev, "failed to add secondary I2C device\n");
6698f0c05fSWolfram Sang return PTR_ERR(bcm590xx->i2c_sec);
679e1e7263SMatt Porter }
689e1e7263SMatt Porter i2c_set_clientdata(bcm590xx->i2c_sec, bcm590xx);
69037b60f2SMatt Porter
709e1e7263SMatt Porter bcm590xx->regmap_sec = devm_regmap_init_i2c(bcm590xx->i2c_sec,
719e1e7263SMatt Porter &bcm590xx_regmap_config_sec);
729e1e7263SMatt Porter if (IS_ERR(bcm590xx->regmap_sec)) {
739e1e7263SMatt Porter ret = PTR_ERR(bcm590xx->regmap_sec);
749e1e7263SMatt Porter dev_err(&bcm590xx->i2c_sec->dev,
759e1e7263SMatt Porter "secondary regmap init failed: %d\n", ret);
769e1e7263SMatt Porter goto err;
779e1e7263SMatt Porter }
789e1e7263SMatt Porter
799148f2c0SLaxman Dewangan ret = devm_mfd_add_devices(&i2c_pri->dev, -1, bcm590xx_devs,
809e1e7263SMatt Porter ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL);
819e1e7263SMatt Porter if (ret < 0) {
829e1e7263SMatt Porter dev_err(&i2c_pri->dev, "failed to add sub-devices: %d\n", ret);
839e1e7263SMatt Porter goto err;
849e1e7263SMatt Porter }
859e1e7263SMatt Porter
869e1e7263SMatt Porter return 0;
879e1e7263SMatt Porter
889e1e7263SMatt Porter err:
899e1e7263SMatt Porter i2c_unregister_device(bcm590xx->i2c_sec);
90037b60f2SMatt Porter return ret;
91037b60f2SMatt Porter }
92037b60f2SMatt Porter
93037b60f2SMatt Porter static const struct of_device_id bcm590xx_of_match[] = {
94037b60f2SMatt Porter { .compatible = "brcm,bcm59056" },
95037b60f2SMatt Porter { }
96037b60f2SMatt Porter };
973827c510SAxel Lin MODULE_DEVICE_TABLE(of, bcm590xx_of_match);
98037b60f2SMatt Porter
99037b60f2SMatt Porter static const struct i2c_device_id bcm590xx_i2c_id[] = {
100037b60f2SMatt Porter { "bcm59056" },
101037b60f2SMatt Porter { }
102037b60f2SMatt Porter };
103037b60f2SMatt Porter MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id);
104037b60f2SMatt Porter
105037b60f2SMatt Porter static struct i2c_driver bcm590xx_i2c_driver = {
106037b60f2SMatt Porter .driver = {
107037b60f2SMatt Porter .name = "bcm590xx",
108b0ad7ebeSKrzysztof Kozlowski .of_match_table = bcm590xx_of_match,
109037b60f2SMatt Porter },
110*9816d859SUwe Kleine-König .probe = bcm590xx_i2c_probe,
111037b60f2SMatt Porter .id_table = bcm590xx_i2c_id,
112037b60f2SMatt Porter };
113037b60f2SMatt Porter module_i2c_driver(bcm590xx_i2c_driver);
114037b60f2SMatt Porter
115037b60f2SMatt Porter MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
116037b60f2SMatt Porter MODULE_DESCRIPTION("BCM590xx multi-function driver");
117037b60f2SMatt Porter MODULE_LICENSE("GPL v2");
118