This source file includes following definitions.
- lp87565_buck_set_ramp_delay
- lp87565_regulator_probe
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8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/regmap.h>
11
12 #include <linux/mfd/lp87565.h>
13
14 #define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, _er, _em, \
15 _delay, _lr, _cr) \
16 [_id] = { \
17 .desc = { \
18 .name = _name, \
19 .supply_name = _of "-in", \
20 .id = _id, \
21 .of_match = of_match_ptr(_of), \
22 .regulators_node = of_match_ptr("regulators"),\
23 .ops = &_ops, \
24 .n_voltages = _n, \
25 .type = REGULATOR_VOLTAGE, \
26 .owner = THIS_MODULE, \
27 .vsel_reg = _vr, \
28 .vsel_mask = _vm, \
29 .enable_reg = _er, \
30 .enable_mask = _em, \
31 .ramp_delay = _delay, \
32 .linear_ranges = _lr, \
33 .n_linear_ranges = ARRAY_SIZE(_lr), \
34 .curr_table = lp87565_buck_uA, \
35 .n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
36 .csel_reg = (_cr), \
37 .csel_mask = LP87565_BUCK_CTRL_2_ILIM, \
38 }, \
39 .ctrl2_reg = _cr, \
40 }
41
42 struct lp87565_regulator {
43 struct regulator_desc desc;
44 unsigned int ctrl2_reg;
45 };
46
47 static const struct lp87565_regulator regulators[];
48
49 static const struct regulator_linear_range buck0_1_2_3_ranges[] = {
50 REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
51 REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
52 REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
53 };
54
55 static const unsigned int lp87565_buck_ramp_delay[] = {
56 30000, 15000, 10000, 7500, 3800, 1900, 940, 470
57 };
58
59
60 static const unsigned int lp87565_buck_uA[] = {
61 1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
62 };
63
64 static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
65 int ramp_delay)
66 {
67 int id = rdev_get_id(rdev);
68 unsigned int reg;
69 int ret;
70
71 if (ramp_delay <= 470)
72 reg = 7;
73 else if (ramp_delay <= 940)
74 reg = 6;
75 else if (ramp_delay <= 1900)
76 reg = 5;
77 else if (ramp_delay <= 3800)
78 reg = 4;
79 else if (ramp_delay <= 7500)
80 reg = 3;
81 else if (ramp_delay <= 10000)
82 reg = 2;
83 else if (ramp_delay <= 15000)
84 reg = 1;
85 else
86 reg = 0;
87
88 ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
89 LP87565_BUCK_CTRL_2_SLEW_RATE,
90 reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
91 if (ret) {
92 dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
93 return ret;
94 }
95
96 rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
97
98
99 rdev->constraints->ramp_delay =
100 rdev->constraints->ramp_delay * 85 / 100;
101
102 return 0;
103 }
104
105
106 static const struct regulator_ops lp87565_buck_ops = {
107 .is_enabled = regulator_is_enabled_regmap,
108 .enable = regulator_enable_regmap,
109 .disable = regulator_disable_regmap,
110 .get_voltage_sel = regulator_get_voltage_sel_regmap,
111 .set_voltage_sel = regulator_set_voltage_sel_regmap,
112 .list_voltage = regulator_list_voltage_linear_range,
113 .map_voltage = regulator_map_voltage_linear_range,
114 .set_voltage_time_sel = regulator_set_voltage_time_sel,
115 .set_ramp_delay = lp87565_buck_set_ramp_delay,
116 .set_current_limit = regulator_set_current_limit_regmap,
117 .get_current_limit = regulator_get_current_limit_regmap,
118 };
119
120 static const struct lp87565_regulator regulators[] = {
121 LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
122 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
123 LP87565_REG_BUCK0_CTRL_1,
124 LP87565_BUCK_CTRL_1_EN, 3230,
125 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
126 LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
127 256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
128 LP87565_REG_BUCK1_CTRL_1,
129 LP87565_BUCK_CTRL_1_EN, 3230,
130 buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
131 LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
132 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
133 LP87565_REG_BUCK2_CTRL_1,
134 LP87565_BUCK_CTRL_1_EN, 3230,
135 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
136 LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
137 256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
138 LP87565_REG_BUCK3_CTRL_1,
139 LP87565_BUCK_CTRL_1_EN, 3230,
140 buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
141 LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
142 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
143 LP87565_REG_BUCK0_CTRL_1,
144 LP87565_BUCK_CTRL_1_EN |
145 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
146 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
147 LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
148 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
149 LP87565_REG_BUCK2_CTRL_1,
150 LP87565_BUCK_CTRL_1_EN, 3230,
151 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
152 LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
153 lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
154 LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
155 LP87565_BUCK_CTRL_1_EN |
156 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
157 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
158 };
159
160 static int lp87565_regulator_probe(struct platform_device *pdev)
161 {
162 struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
163 struct regulator_config config = { };
164 struct regulator_dev *rdev;
165 int i, min_idx, max_idx;
166
167 platform_set_drvdata(pdev, lp87565);
168
169 config.dev = &pdev->dev;
170 config.dev->of_node = lp87565->dev->of_node;
171 config.driver_data = lp87565;
172 config.regmap = lp87565->regmap;
173
174 switch (lp87565->dev_type) {
175 case LP87565_DEVICE_TYPE_LP87565_Q1:
176 min_idx = LP87565_BUCK_10;
177 max_idx = LP87565_BUCK_23;
178 break;
179 case LP87565_DEVICE_TYPE_LP87561_Q1:
180 min_idx = LP87565_BUCK_3210;
181 max_idx = LP87565_BUCK_3210;
182 break;
183 default:
184 min_idx = LP87565_BUCK_0;
185 max_idx = LP87565_BUCK_3;
186 break;
187 }
188
189 for (i = min_idx; i <= max_idx; i++) {
190 rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
191 &config);
192 if (IS_ERR(rdev)) {
193 dev_err(lp87565->dev, "failed to register %s regulator\n",
194 pdev->name);
195 return PTR_ERR(rdev);
196 }
197 }
198
199 return 0;
200 }
201
202 static const struct platform_device_id lp87565_regulator_id_table[] = {
203 { "lp87565-regulator", },
204 { "lp87565-q1-regulator", },
205 { }
206 };
207 MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
208
209 static struct platform_driver lp87565_regulator_driver = {
210 .driver = {
211 .name = "lp87565-pmic",
212 },
213 .probe = lp87565_regulator_probe,
214 .id_table = lp87565_regulator_id_table,
215 };
216 module_platform_driver(lp87565_regulator_driver);
217
218 MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
219 MODULE_DESCRIPTION("LP87565 voltage regulator driver");
220 MODULE_LICENSE("GPL v2");