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15#include <linux/module.h>
16#include <linux/of_device.h>
17#include <linux/platform_device.h>
18#include <linux/regulator/driver.h>
19#include <linux/regulator/machine.h>
20
21
22
23
24#define ACT8945A_SYS_MODE 0x00
25#define ACT8945A_SYS_CTRL 0x01
26#define ACT8945A_DCDC1_VSET1 0x20
27#define ACT8945A_DCDC1_VSET2 0x21
28#define ACT8945A_DCDC1_CTRL 0x22
29#define ACT8945A_DCDC2_VSET1 0x30
30#define ACT8945A_DCDC2_VSET2 0x31
31#define ACT8945A_DCDC2_CTRL 0x32
32#define ACT8945A_DCDC3_VSET1 0x40
33#define ACT8945A_DCDC3_VSET2 0x41
34#define ACT8945A_DCDC3_CTRL 0x42
35#define ACT8945A_LDO1_VSET 0x50
36#define ACT8945A_LDO1_CTRL 0x51
37#define ACT8945A_LDO2_VSET 0x54
38#define ACT8945A_LDO2_CTRL 0x55
39#define ACT8945A_LDO3_VSET 0x60
40#define ACT8945A_LDO3_CTRL 0x61
41#define ACT8945A_LDO4_VSET 0x64
42#define ACT8945A_LDO4_CTRL 0x65
43
44
45
46
47#define ACT8945A_ENA 0x80
48#define ACT8945A_VSEL_MASK 0x3F
49
50
51
52
53#define ACT8945A_VOLTAGE_NUM 64
54
55enum {
56 ACT8945A_ID_DCDC1,
57 ACT8945A_ID_DCDC2,
58 ACT8945A_ID_DCDC3,
59 ACT8945A_ID_LDO1,
60 ACT8945A_ID_LDO2,
61 ACT8945A_ID_LDO3,
62 ACT8945A_ID_LDO4,
63 ACT8945A_REG_NUM,
64};
65
66static const struct regulator_linear_range act8945a_voltage_ranges[] = {
67 REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
68 REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
69 REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
70};
71
72static const struct regulator_ops act8945a_ops = {
73 .list_voltage = regulator_list_voltage_linear_range,
74 .map_voltage = regulator_map_voltage_linear_range,
75 .get_voltage_sel = regulator_get_voltage_sel_regmap,
76 .set_voltage_sel = regulator_set_voltage_sel_regmap,
77 .enable = regulator_enable_regmap,
78 .disable = regulator_disable_regmap,
79 .is_enabled = regulator_is_enabled_regmap,
80};
81
82#define ACT89xx_REG(_name, _family, _id, _vsel_reg, _supply) \
83 [_family##_ID_##_id] = { \
84 .name = _name, \
85 .supply_name = _supply, \
86 .of_match = of_match_ptr("REG_"#_id), \
87 .regulators_node = of_match_ptr("regulators"), \
88 .id = _family##_ID_##_id, \
89 .type = REGULATOR_VOLTAGE, \
90 .ops = &act8945a_ops, \
91 .n_voltages = ACT8945A_VOLTAGE_NUM, \
92 .linear_ranges = act8945a_voltage_ranges, \
93 .n_linear_ranges = ARRAY_SIZE(act8945a_voltage_ranges), \
94 .vsel_reg = _family##_##_id##_##_vsel_reg, \
95 .vsel_mask = ACT8945A_VSEL_MASK, \
96 .enable_reg = _family##_##_id##_CTRL, \
97 .enable_mask = ACT8945A_ENA, \
98 .owner = THIS_MODULE, \
99 }
100
101static const struct regulator_desc act8945a_regulators[] = {
102 ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET1, "vp1"),
103 ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET1, "vp2"),
104 ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET1, "vp3"),
105 ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
106 ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
107 ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
108 ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
109};
110
111static const struct regulator_desc act8945a_alt_regulators[] = {
112 ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET2, "vp1"),
113 ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET2, "vp2"),
114 ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET2, "vp3"),
115 ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"),
116 ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"),
117 ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"),
118 ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"),
119};
120
121static int act8945a_pmic_probe(struct platform_device *pdev)
122{
123 struct regulator_config config = { };
124 const struct regulator_desc *regulators;
125 struct regulator_dev *rdev;
126 int i, num_regulators;
127 bool voltage_select;
128
129 voltage_select = of_property_read_bool(pdev->dev.parent->of_node,
130 "active-semi,vsel-high");
131
132 if (voltage_select) {
133 regulators = act8945a_alt_regulators;
134 num_regulators = ARRAY_SIZE(act8945a_alt_regulators);
135 } else {
136 regulators = act8945a_regulators;
137 num_regulators = ARRAY_SIZE(act8945a_regulators);
138 }
139
140 config.dev = &pdev->dev;
141 config.dev->of_node = pdev->dev.parent->of_node;
142 for (i = 0; i < num_regulators; i++) {
143 rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config);
144 if (IS_ERR(rdev)) {
145 dev_err(&pdev->dev,
146 "failed to register %s regulator\n",
147 regulators[i].name);
148 return PTR_ERR(rdev);
149 }
150 }
151
152 return 0;
153}
154
155static struct platform_driver act8945a_pmic_driver = {
156 .driver = {
157 .name = "act8945a-regulator",
158 },
159 .probe = act8945a_pmic_probe,
160};
161module_platform_driver(act8945a_pmic_driver);
162
163MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver");
164MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
165MODULE_LICENSE("GPL");
166
