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4e4627e1 CH |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* | |
3 | * Copyright (C) 2022 Richtek Technology Corp. | |
4 | * Author: ChiYuan Huang <cy_huang@richtek.com> | |
5 | */ | |
6 | ||
7 | #include <linux/i2c.h> | |
8 | #include <linux/kernel.h> | |
9 | #include <linux/mfd/core.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/mod_devicetable.h> | |
12 | #include <linux/regmap.h> | |
13 | ||
14 | #define RT5120_REG_INTENABLE 0x1D | |
15 | #define RT5120_REG_INTSTAT 0x1E | |
16 | #define RT5120_REG_FZCMODE 0x44 | |
17 | ||
18 | #define RT5120_INT_HOTDIE 0 | |
19 | #define RT5120_INT_PWRKEY_REL 5 | |
20 | #define RT5120_INT_PWRKEY_PRESS 6 | |
21 | ||
22 | static const struct regmap_range rt5120_rd_yes_ranges[] = { | |
23 | regmap_reg_range(0x03, 0x13), | |
24 | regmap_reg_range(0x1c, 0x20), | |
25 | regmap_reg_range(0x44, 0x44), | |
26 | }; | |
27 | ||
28 | static const struct regmap_range rt5120_wr_yes_ranges[] = { | |
29 | regmap_reg_range(0x06, 0x13), | |
30 | regmap_reg_range(0x1c, 0x20), | |
31 | regmap_reg_range(0x44, 0x44), | |
32 | }; | |
33 | ||
34 | static const struct regmap_access_table rt5120_rd_table = { | |
35 | .yes_ranges = rt5120_rd_yes_ranges, | |
36 | .n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges), | |
37 | }; | |
38 | ||
39 | static const struct regmap_access_table rt5120_wr_table = { | |
40 | .yes_ranges = rt5120_wr_yes_ranges, | |
41 | .n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges), | |
42 | }; | |
43 | ||
44 | static const struct regmap_config rt5120_regmap_config = { | |
45 | .reg_bits = 8, | |
46 | .val_bits = 8, | |
47 | .max_register = RT5120_REG_FZCMODE, | |
48 | ||
49 | .wr_table = &rt5120_wr_table, | |
50 | .rd_table = &rt5120_rd_table, | |
51 | }; | |
52 | ||
53 | static const struct regmap_irq rt5120_irqs[] = { | |
54 | REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8), | |
55 | REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8), | |
56 | REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8), | |
57 | }; | |
58 | ||
59 | static const struct regmap_irq_chip rt5120_irq_chip = { | |
60 | .name = "rt5120-pmic", | |
61 | .status_base = RT5120_REG_INTSTAT, | |
cdd13e72 | 62 | .unmask_base = RT5120_REG_INTENABLE, |
4e4627e1 | 63 | .ack_base = RT5120_REG_INTSTAT, |
4e4627e1 CH |
64 | .use_ack = true, |
65 | .num_regs = 1, | |
66 | .irqs = rt5120_irqs, | |
67 | .num_irqs = ARRAY_SIZE(rt5120_irqs), | |
68 | }; | |
69 | ||
70 | static const struct resource rt5120_regulator_resources[] = { | |
71 | DEFINE_RES_IRQ(RT5120_INT_HOTDIE), | |
72 | }; | |
73 | ||
74 | static const struct resource rt5120_pwrkey_resources[] = { | |
75 | DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"), | |
76 | DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"), | |
77 | }; | |
78 | ||
79 | static const struct mfd_cell rt5120_devs[] = { | |
80 | MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources), | |
81 | MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"), | |
82 | }; | |
83 | ||
84 | static int rt5120_probe(struct i2c_client *i2c) | |
85 | { | |
86 | struct device *dev = &i2c->dev; | |
87 | struct regmap *regmap; | |
88 | struct regmap_irq_chip_data *irq_data; | |
89 | int ret; | |
90 | ||
91 | regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config); | |
92 | if (IS_ERR(regmap)) | |
93 | return dev_err_probe(dev, PTR_ERR(regmap), | |
94 | "Failed to init regmap\n"); | |
95 | ||
96 | ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0, | |
97 | &rt5120_irq_chip, &irq_data); | |
98 | if (ret) | |
99 | return dev_err_probe(dev, ret, "Failed to add IRQ chip\n"); | |
100 | ||
101 | return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs, | |
102 | ARRAY_SIZE(rt5120_devs), NULL, 0, | |
103 | regmap_irq_get_domain(irq_data)); | |
104 | } | |
105 | ||
106 | static const struct of_device_id rt5120_device_match_table[] = { | |
107 | { .compatible = "richtek,rt5120" }, | |
108 | {} | |
109 | }; | |
110 | MODULE_DEVICE_TABLE(of, rt5120_device_match_table); | |
111 | ||
112 | static struct i2c_driver rt5120_driver = { | |
113 | .driver = { | |
114 | .name = "rt5120", | |
115 | .of_match_table = rt5120_device_match_table, | |
116 | }, | |
9816d859 | 117 | .probe = rt5120_probe, |
4e4627e1 CH |
118 | }; |
119 | module_i2c_driver(rt5120_driver); | |
120 | ||
121 | MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); | |
122 | MODULE_DESCRIPTION("Richtek RT5120 I2C driver"); | |
123 | MODULE_LICENSE("GPL v2"); |