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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * MFD core driver for the Richtek RT5033.
4 *
5 * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
6 * flash LED, current source, LDO and BUCK regulators.
7 *
8 * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
9 * Author: Beomho Seo <beomho.seo@samsung.com>
10 */
11
12#include <linux/err.h>
13#include <linux/mod_devicetable.h>
14#include <linux/module.h>
15#include <linux/interrupt.h>
16#include <linux/mfd/core.h>
17#include <linux/mfd/rt5033.h>
18#include <linux/mfd/rt5033-private.h>
19
20static const struct regmap_irq rt5033_irqs[] = {
21 { .mask = RT5033_PMIC_IRQ_BUCKOCP, },
22 { .mask = RT5033_PMIC_IRQ_BUCKLV, },
23 { .mask = RT5033_PMIC_IRQ_SAFELDOLV, },
24 { .mask = RT5033_PMIC_IRQ_LDOLV, },
25 { .mask = RT5033_PMIC_IRQ_OT, },
26 { .mask = RT5033_PMIC_IRQ_VDDA_UV, },
27};
28
29static const struct regmap_irq_chip rt5033_irq_chip = {
30 .name = "rt5033",
31 .status_base = RT5033_REG_PMIC_IRQ_STAT,
32 .unmask_base = RT5033_REG_PMIC_IRQ_CTRL,
33 .num_regs = 1,
34 .irqs = rt5033_irqs,
35 .num_irqs = ARRAY_SIZE(rt5033_irqs),
36};
37
38static const struct mfd_cell rt5033_devs[] = {
39 { .name = "rt5033-regulator", },
40 {
41 .name = "rt5033-charger",
42 .of_compatible = "richtek,rt5033-charger",
43 }, {
44 .name = "rt5033-led",
45 .of_compatible = "richtek,rt5033-led",
46 },
47};
48
49static const struct regmap_config rt5033_regmap_config = {
50 .reg_bits = 8,
51 .val_bits = 8,
52 .max_register = RT5033_REG_END,
53};
54
55static int rt5033_i2c_probe(struct i2c_client *i2c)
56{
57 struct rt5033_dev *rt5033;
58 unsigned int dev_id, chip_rev;
59 int ret;
60
61 rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);
62 if (!rt5033)
63 return -ENOMEM;
64
65 i2c_set_clientdata(i2c, rt5033);
66 rt5033->dev = &i2c->dev;
67 rt5033->irq = i2c->irq;
68 rt5033->wakeup = true;
69
70 rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);
71 if (IS_ERR(rt5033->regmap)) {
72 dev_err(&i2c->dev, "Failed to allocate register map.\n");
73 return PTR_ERR(rt5033->regmap);
74 }
75
76 ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);
77 if (ret) {
78 dev_err(&i2c->dev, "Device not found\n");
79 return -ENODEV;
80 }
81 chip_rev = dev_id & RT5033_CHIP_REV_MASK;
82 dev_info(&i2c->dev, "Device found (rev. %d)\n", chip_rev);
83
84 ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,
85 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
86 0, &rt5033_irq_chip, &rt5033->irq_data);
87 if (ret) {
88 dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
89 rt5033->irq, ret);
90 return ret;
91 }
92
93 ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs,
94 ARRAY_SIZE(rt5033_devs), NULL, 0,
95 regmap_irq_get_domain(rt5033->irq_data));
96 if (ret < 0) {
97 dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");
98 return ret;
99 }
100
101 device_init_wakeup(rt5033->dev, rt5033->wakeup);
102
103 return 0;
104}
105
106static const struct i2c_device_id rt5033_i2c_id[] = {
107 { "rt5033", },
108 { }
109};
110MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id);
111
112static const struct of_device_id rt5033_dt_match[] = {
113 { .compatible = "richtek,rt5033", },
114 { }
115};
116MODULE_DEVICE_TABLE(of, rt5033_dt_match);
117
118static struct i2c_driver rt5033_driver = {
119 .driver = {
120 .name = "rt5033",
121 .of_match_table = rt5033_dt_match,
122 },
123 .probe = rt5033_i2c_probe,
124 .id_table = rt5033_i2c_id,
125};
126module_i2c_driver(rt5033_driver);
127
128MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
129MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
130MODULE_LICENSE("GPL");
1/*
2 * MFD core driver for the Richtek RT5033.
3 *
4 * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
5 * flash LED, current source, LDO and BUCK regulators.
6 *
7 * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
8 * Author: Beomho Seo <beomho.seo@samsung.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published bythe Free Software Foundation.
13 */
14
15#include <linux/err.h>
16#include <linux/module.h>
17#include <linux/interrupt.h>
18#include <linux/of_device.h>
19#include <linux/mfd/core.h>
20#include <linux/mfd/rt5033.h>
21#include <linux/mfd/rt5033-private.h>
22
23static const struct regmap_irq rt5033_irqs[] = {
24 { .mask = RT5033_PMIC_IRQ_BUCKOCP, },
25 { .mask = RT5033_PMIC_IRQ_BUCKLV, },
26 { .mask = RT5033_PMIC_IRQ_SAFELDOLV, },
27 { .mask = RT5033_PMIC_IRQ_LDOLV, },
28 { .mask = RT5033_PMIC_IRQ_OT, },
29 { .mask = RT5033_PMIC_IRQ_VDDA_UV, },
30};
31
32static const struct regmap_irq_chip rt5033_irq_chip = {
33 .name = "rt5033",
34 .status_base = RT5033_REG_PMIC_IRQ_STAT,
35 .mask_base = RT5033_REG_PMIC_IRQ_CTRL,
36 .mask_invert = true,
37 .num_regs = 1,
38 .irqs = rt5033_irqs,
39 .num_irqs = ARRAY_SIZE(rt5033_irqs),
40};
41
42static const struct mfd_cell rt5033_devs[] = {
43 { .name = "rt5033-regulator", },
44 {
45 .name = "rt5033-charger",
46 .of_compatible = "richtek,rt5033-charger",
47 }, {
48 .name = "rt5033-battery",
49 .of_compatible = "richtek,rt5033-battery",
50 }, {
51 .name = "rt5033-led",
52 .of_compatible = "richtek,rt5033-led",
53 },
54};
55
56static const struct regmap_config rt5033_regmap_config = {
57 .reg_bits = 8,
58 .val_bits = 8,
59 .max_register = RT5033_REG_END,
60};
61
62static int rt5033_i2c_probe(struct i2c_client *i2c,
63 const struct i2c_device_id *id)
64{
65 struct rt5033_dev *rt5033;
66 unsigned int dev_id;
67 int ret;
68
69 rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);
70 if (!rt5033)
71 return -ENOMEM;
72
73 i2c_set_clientdata(i2c, rt5033);
74 rt5033->dev = &i2c->dev;
75 rt5033->irq = i2c->irq;
76 rt5033->wakeup = true;
77
78 rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);
79 if (IS_ERR(rt5033->regmap)) {
80 dev_err(&i2c->dev, "Failed to allocate register map.\n");
81 return PTR_ERR(rt5033->regmap);
82 }
83
84 ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);
85 if (ret) {
86 dev_err(&i2c->dev, "Device not found\n");
87 return -ENODEV;
88 }
89 dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id);
90
91 ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,
92 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
93 0, &rt5033_irq_chip, &rt5033->irq_data);
94 if (ret) {
95 dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
96 rt5033->irq, ret);
97 return ret;
98 }
99
100 ret = mfd_add_devices(rt5033->dev, -1, rt5033_devs,
101 ARRAY_SIZE(rt5033_devs), NULL, 0,
102 regmap_irq_get_domain(rt5033->irq_data));
103 if (ret < 0) {
104 dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");
105 return ret;
106 }
107
108 device_init_wakeup(rt5033->dev, rt5033->wakeup);
109
110 return 0;
111}
112
113static int rt5033_i2c_remove(struct i2c_client *i2c)
114{
115 mfd_remove_devices(&i2c->dev);
116
117 return 0;
118}
119
120static const struct i2c_device_id rt5033_i2c_id[] = {
121 { "rt5033", },
122 { }
123};
124MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id);
125
126static const struct of_device_id rt5033_dt_match[] = {
127 { .compatible = "richtek,rt5033", },
128 { }
129};
130MODULE_DEVICE_TABLE(of, rt5033_dt_match);
131
132static struct i2c_driver rt5033_driver = {
133 .driver = {
134 .name = "rt5033",
135 .of_match_table = of_match_ptr(rt5033_dt_match),
136 },
137 .probe = rt5033_i2c_probe,
138 .remove = rt5033_i2c_remove,
139 .id_table = rt5033_i2c_id,
140};
141module_i2c_driver(rt5033_driver);
142
143MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
144MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
145MODULE_LICENSE("GPL");