2 * MFD core driver for the Richtek RT5033.
4 * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
5 * flash LED, current source, LDO and BUCK regulators.
7 * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
8 * Author: Beomho Seo <beomho.seo@samsung.com>
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.
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>
23 static 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
, },
32 static const struct regmap_irq_chip rt5033_irq_chip
= {
34 .status_base
= RT5033_REG_PMIC_IRQ_STAT
,
35 .mask_base
= RT5033_REG_PMIC_IRQ_CTRL
,
39 .num_irqs
= ARRAY_SIZE(rt5033_irqs
),
42 static const struct mfd_cell rt5033_devs
[] = {
43 { .name
= "rt5033-regulator", },
45 .name
= "rt5033-charger",
46 .of_compatible
= "richtek,rt5033-charger",
48 .name
= "rt5033-battery",
49 .of_compatible
= "richtek,rt5033-battery",
53 static const struct regmap_config rt5033_regmap_config
= {
56 .max_register
= RT5033_REG_END
,
59 static int rt5033_i2c_probe(struct i2c_client
*i2c
,
60 const struct i2c_device_id
*id
)
62 struct rt5033_dev
*rt5033
;
66 rt5033
= devm_kzalloc(&i2c
->dev
, sizeof(*rt5033
), GFP_KERNEL
);
70 i2c_set_clientdata(i2c
, rt5033
);
71 rt5033
->dev
= &i2c
->dev
;
72 rt5033
->irq
= i2c
->irq
;
73 rt5033
->wakeup
= true;
75 rt5033
->regmap
= devm_regmap_init_i2c(i2c
, &rt5033_regmap_config
);
76 if (IS_ERR(rt5033
->regmap
)) {
77 dev_err(&i2c
->dev
, "Failed to allocate register map.\n");
78 return PTR_ERR(rt5033
->regmap
);
81 ret
= regmap_read(rt5033
->regmap
, RT5033_REG_DEVICE_ID
, &dev_id
);
83 dev_err(&i2c
->dev
, "Device not found\n");
86 dev_info(&i2c
->dev
, "Device found Device ID: %04x\n", dev_id
);
88 ret
= regmap_add_irq_chip(rt5033
->regmap
, rt5033
->irq
,
89 IRQF_TRIGGER_FALLING
| IRQF_ONESHOT
,
90 0, &rt5033_irq_chip
, &rt5033
->irq_data
);
92 dev_err(&i2c
->dev
, "Failed to request IRQ %d: %d\n",
97 ret
= mfd_add_devices(rt5033
->dev
, -1, rt5033_devs
,
98 ARRAY_SIZE(rt5033_devs
), NULL
, 0,
99 regmap_irq_get_domain(rt5033
->irq_data
));
101 dev_err(&i2c
->dev
, "Failed to add RT5033 child devices.\n");
105 device_init_wakeup(rt5033
->dev
, rt5033
->wakeup
);
110 static int rt5033_i2c_remove(struct i2c_client
*i2c
)
112 mfd_remove_devices(&i2c
->dev
);
117 static const struct i2c_device_id rt5033_i2c_id
[] = {
121 MODULE_DEVICE_TABLE(i2c
, rt5033_i2c_id
);
123 static const struct of_device_id rt5033_dt_match
[] = {
124 { .compatible
= "richtek,rt5033", },
128 static struct i2c_driver rt5033_driver
= {
131 .of_match_table
= of_match_ptr(rt5033_dt_match
),
133 .probe
= rt5033_i2c_probe
,
134 .remove
= rt5033_i2c_remove
,
135 .id_table
= rt5033_i2c_id
,
137 module_i2c_driver(rt5033_driver
);
139 MODULE_ALIAS("i2c:rt5033");
140 MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
141 MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
142 MODULE_LICENSE("GPL");