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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Regulator driver for LP87565 PMIC
4 *
5 * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
6 */
7
8#include <linux/module.h>
9#include <linux/platform_device.h>
10#include <linux/regmap.h>
11
12#include <linux/mfd/lp87565.h>
13
14enum LP87565_regulator_id {
15 /* BUCK's */
16 LP87565_BUCK_0,
17 LP87565_BUCK_1,
18 LP87565_BUCK_2,
19 LP87565_BUCK_3,
20 LP87565_BUCK_10,
21 LP87565_BUCK_23,
22 LP87565_BUCK_3210,
23};
24
25#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, \
26 _er, _em, _ev, _delay, _lr, _cr) \
27 [_id] = { \
28 .desc = { \
29 .name = _name, \
30 .supply_name = _of "-in", \
31 .id = _id, \
32 .of_match = of_match_ptr(_of), \
33 .regulators_node = of_match_ptr("regulators"),\
34 .ops = &_ops, \
35 .n_voltages = _n, \
36 .type = REGULATOR_VOLTAGE, \
37 .owner = THIS_MODULE, \
38 .vsel_reg = _vr, \
39 .vsel_mask = _vm, \
40 .enable_reg = _er, \
41 .enable_mask = _em, \
42 .enable_val = _ev, \
43 .ramp_delay = _delay, \
44 .linear_ranges = _lr, \
45 .n_linear_ranges = ARRAY_SIZE(_lr), \
46 .curr_table = lp87565_buck_uA, \
47 .n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
48 .csel_reg = (_cr), \
49 .csel_mask = LP87565_BUCK_CTRL_2_ILIM, \
50 }, \
51 .ctrl2_reg = _cr, \
52 }
53
54struct lp87565_regulator {
55 struct regulator_desc desc;
56 unsigned int ctrl2_reg;
57};
58
59static const struct lp87565_regulator regulators[];
60
61static const struct linear_range buck0_1_2_3_ranges[] = {
62 REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
63 REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
64 REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
65};
66
67static const unsigned int lp87565_buck_ramp_delay[] = {
68 30000, 15000, 10000, 7500, 3800, 1900, 940, 470
69};
70
71/* LP87565 BUCK current limit */
72static const unsigned int lp87565_buck_uA[] = {
73 1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
74};
75
76static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
77 int ramp_delay)
78{
79 int id = rdev_get_id(rdev);
80 unsigned int reg;
81 int ret;
82
83 if (ramp_delay <= 470)
84 reg = 7;
85 else if (ramp_delay <= 940)
86 reg = 6;
87 else if (ramp_delay <= 1900)
88 reg = 5;
89 else if (ramp_delay <= 3800)
90 reg = 4;
91 else if (ramp_delay <= 7500)
92 reg = 3;
93 else if (ramp_delay <= 10000)
94 reg = 2;
95 else if (ramp_delay <= 15000)
96 reg = 1;
97 else
98 reg = 0;
99
100 ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
101 LP87565_BUCK_CTRL_2_SLEW_RATE,
102 reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
103 if (ret) {
104 dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
105 return ret;
106 }
107
108 rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
109
110 /* Conservatively give a 15% margin */
111 rdev->constraints->ramp_delay =
112 rdev->constraints->ramp_delay * 85 / 100;
113
114 return 0;
115}
116
117/* Operations permitted on BUCKs */
118static const struct regulator_ops lp87565_buck_ops = {
119 .is_enabled = regulator_is_enabled_regmap,
120 .enable = regulator_enable_regmap,
121 .disable = regulator_disable_regmap,
122 .get_voltage_sel = regulator_get_voltage_sel_regmap,
123 .set_voltage_sel = regulator_set_voltage_sel_regmap,
124 .list_voltage = regulator_list_voltage_linear_range,
125 .map_voltage = regulator_map_voltage_linear_range,
126 .set_voltage_time_sel = regulator_set_voltage_time_sel,
127 .set_ramp_delay = lp87565_buck_set_ramp_delay,
128 .set_current_limit = regulator_set_current_limit_regmap,
129 .get_current_limit = regulator_get_current_limit_regmap,
130};
131
132static const struct lp87565_regulator regulators[] = {
133 LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
134 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
135 LP87565_REG_BUCK0_CTRL_1,
136 LP87565_BUCK_CTRL_1_EN |
137 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
138 LP87565_BUCK_CTRL_1_EN, 3230,
139 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
140 LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
141 256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
142 LP87565_REG_BUCK1_CTRL_1,
143 LP87565_BUCK_CTRL_1_EN |
144 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
145 LP87565_BUCK_CTRL_1_EN, 3230,
146 buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
147 LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
148 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
149 LP87565_REG_BUCK2_CTRL_1,
150 LP87565_BUCK_CTRL_1_EN |
151 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
152 LP87565_BUCK_CTRL_1_EN, 3230,
153 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
154 LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
155 256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
156 LP87565_REG_BUCK3_CTRL_1,
157 LP87565_BUCK_CTRL_1_EN |
158 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
159 LP87565_BUCK_CTRL_1_EN, 3230,
160 buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
161 LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
162 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
163 LP87565_REG_BUCK0_CTRL_1,
164 LP87565_BUCK_CTRL_1_EN |
165 LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
166 LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
167 LP87565_BUCK_CTRL_1_EN |
168 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
169 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
170 LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
171 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
172 LP87565_REG_BUCK2_CTRL_1,
173 LP87565_BUCK_CTRL_1_EN |
174 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
175 LP87565_BUCK_CTRL_1_EN, 3230,
176 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
177 LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
178 lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
179 LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
180 LP87565_BUCK_CTRL_1_EN |
181 LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
182 LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
183 LP87565_BUCK_CTRL_1_EN |
184 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
185 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
186};
187
188static int lp87565_regulator_probe(struct platform_device *pdev)
189{
190 struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
191 struct regulator_config config = { };
192 struct regulator_dev *rdev;
193 int i, min_idx, max_idx;
194
195 platform_set_drvdata(pdev, lp87565);
196
197 config.dev = &pdev->dev;
198 config.dev->of_node = lp87565->dev->of_node;
199 config.driver_data = lp87565;
200 config.regmap = lp87565->regmap;
201
202 switch (lp87565->dev_type) {
203 case LP87565_DEVICE_TYPE_LP87565_Q1:
204 min_idx = LP87565_BUCK_10;
205 max_idx = LP87565_BUCK_23;
206 break;
207 case LP87565_DEVICE_TYPE_LP87561_Q1:
208 min_idx = LP87565_BUCK_3210;
209 max_idx = LP87565_BUCK_3210;
210 break;
211 default:
212 min_idx = LP87565_BUCK_0;
213 max_idx = LP87565_BUCK_3;
214 break;
215 }
216
217 for (i = min_idx; i <= max_idx; i++) {
218 rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
219 &config);
220 if (IS_ERR(rdev)) {
221 dev_err(lp87565->dev, "failed to register %s regulator\n",
222 pdev->name);
223 return PTR_ERR(rdev);
224 }
225 }
226
227 return 0;
228}
229
230static const struct platform_device_id lp87565_regulator_id_table[] = {
231 { "lp87565-regulator", },
232 { "lp87565-q1-regulator", },
233 { /* sentinel */ }
234};
235MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
236
237static struct platform_driver lp87565_regulator_driver = {
238 .driver = {
239 .name = "lp87565-pmic",
240 },
241 .probe = lp87565_regulator_probe,
242 .id_table = lp87565_regulator_id_table,
243};
244module_platform_driver(lp87565_regulator_driver);
245
246MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
247MODULE_DESCRIPTION("LP87565 voltage regulator driver");
248MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Regulator driver for LP87565 PMIC
4 *
5 * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
6 */
7
8#include <linux/module.h>
9#include <linux/platform_device.h>
10#include <linux/regmap.h>
11
12#include <linux/mfd/lp87565.h>
13
14enum LP87565_regulator_id {
15 /* BUCK's */
16 LP87565_BUCK_0,
17 LP87565_BUCK_1,
18 LP87565_BUCK_2,
19 LP87565_BUCK_3,
20 LP87565_BUCK_10,
21 LP87565_BUCK_23,
22 LP87565_BUCK_3210,
23};
24
25#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, \
26 _er, _em, _ev, _delay, _lr, _cr) \
27 [_id] = { \
28 .desc = { \
29 .name = _name, \
30 .supply_name = _of "-in", \
31 .id = _id, \
32 .of_match = _of, \
33 .regulators_node = "regulators", \
34 .ops = &_ops, \
35 .n_voltages = _n, \
36 .type = REGULATOR_VOLTAGE, \
37 .owner = THIS_MODULE, \
38 .vsel_reg = _vr, \
39 .vsel_mask = _vm, \
40 .enable_reg = _er, \
41 .enable_mask = _em, \
42 .enable_val = _ev, \
43 .ramp_delay = _delay, \
44 .linear_ranges = _lr, \
45 .n_linear_ranges = ARRAY_SIZE(_lr), \
46 .curr_table = lp87565_buck_uA, \
47 .n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
48 .csel_reg = (_cr), \
49 .csel_mask = LP87565_BUCK_CTRL_2_ILIM, \
50 }, \
51 .ctrl2_reg = _cr, \
52 }
53
54struct lp87565_regulator {
55 struct regulator_desc desc;
56 unsigned int ctrl2_reg;
57};
58
59static const struct lp87565_regulator regulators[];
60
61static const struct linear_range buck0_1_2_3_ranges[] = {
62 REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
63 REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
64 REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
65};
66
67static const unsigned int lp87565_buck_ramp_delay[] = {
68 30000, 15000, 10000, 7500, 3800, 1900, 940, 470
69};
70
71/* LP87565 BUCK current limit */
72static const unsigned int lp87565_buck_uA[] = {
73 1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
74};
75
76static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
77 int ramp_delay)
78{
79 int id = rdev_get_id(rdev);
80 unsigned int reg;
81 int ret;
82
83 if (ramp_delay <= 470)
84 reg = 7;
85 else if (ramp_delay <= 940)
86 reg = 6;
87 else if (ramp_delay <= 1900)
88 reg = 5;
89 else if (ramp_delay <= 3800)
90 reg = 4;
91 else if (ramp_delay <= 7500)
92 reg = 3;
93 else if (ramp_delay <= 10000)
94 reg = 2;
95 else if (ramp_delay <= 15000)
96 reg = 1;
97 else
98 reg = 0;
99
100 ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
101 LP87565_BUCK_CTRL_2_SLEW_RATE,
102 reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
103 if (ret) {
104 dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
105 return ret;
106 }
107
108 rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
109
110 /* Conservatively give a 15% margin */
111 rdev->constraints->ramp_delay =
112 rdev->constraints->ramp_delay * 85 / 100;
113
114 return 0;
115}
116
117/* Operations permitted on BUCKs */
118static const struct regulator_ops lp87565_buck_ops = {
119 .is_enabled = regulator_is_enabled_regmap,
120 .enable = regulator_enable_regmap,
121 .disable = regulator_disable_regmap,
122 .get_voltage_sel = regulator_get_voltage_sel_regmap,
123 .set_voltage_sel = regulator_set_voltage_sel_regmap,
124 .list_voltage = regulator_list_voltage_linear_range,
125 .map_voltage = regulator_map_voltage_linear_range,
126 .set_voltage_time_sel = regulator_set_voltage_time_sel,
127 .set_ramp_delay = lp87565_buck_set_ramp_delay,
128 .set_current_limit = regulator_set_current_limit_regmap,
129 .get_current_limit = regulator_get_current_limit_regmap,
130};
131
132static const struct lp87565_regulator regulators[] = {
133 LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
134 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
135 LP87565_REG_BUCK0_CTRL_1,
136 LP87565_BUCK_CTRL_1_EN |
137 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
138 LP87565_BUCK_CTRL_1_EN, 3230,
139 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
140 LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
141 256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
142 LP87565_REG_BUCK1_CTRL_1,
143 LP87565_BUCK_CTRL_1_EN |
144 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
145 LP87565_BUCK_CTRL_1_EN, 3230,
146 buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
147 LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
148 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
149 LP87565_REG_BUCK2_CTRL_1,
150 LP87565_BUCK_CTRL_1_EN |
151 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
152 LP87565_BUCK_CTRL_1_EN, 3230,
153 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
154 LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
155 256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
156 LP87565_REG_BUCK3_CTRL_1,
157 LP87565_BUCK_CTRL_1_EN |
158 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
159 LP87565_BUCK_CTRL_1_EN, 3230,
160 buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
161 LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
162 256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
163 LP87565_REG_BUCK0_CTRL_1,
164 LP87565_BUCK_CTRL_1_EN |
165 LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
166 LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
167 LP87565_BUCK_CTRL_1_EN |
168 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
169 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
170 LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
171 256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
172 LP87565_REG_BUCK2_CTRL_1,
173 LP87565_BUCK_CTRL_1_EN |
174 LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
175 LP87565_BUCK_CTRL_1_EN, 3230,
176 buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
177 LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
178 lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
179 LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
180 LP87565_BUCK_CTRL_1_EN |
181 LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
182 LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
183 LP87565_BUCK_CTRL_1_EN |
184 LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
185 buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
186};
187
188static int lp87565_regulator_probe(struct platform_device *pdev)
189{
190 struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
191 struct regulator_config config = { };
192 struct regulator_dev *rdev;
193 int i, min_idx, max_idx;
194
195 platform_set_drvdata(pdev, lp87565);
196
197 config.dev = &pdev->dev;
198 config.dev->of_node = lp87565->dev->of_node;
199 config.driver_data = lp87565;
200 config.regmap = lp87565->regmap;
201
202 switch (lp87565->dev_type) {
203 case LP87565_DEVICE_TYPE_LP87565_Q1:
204 min_idx = LP87565_BUCK_10;
205 max_idx = LP87565_BUCK_23;
206 break;
207 case LP87565_DEVICE_TYPE_LP87561_Q1:
208 min_idx = LP87565_BUCK_3210;
209 max_idx = LP87565_BUCK_3210;
210 break;
211 default:
212 min_idx = LP87565_BUCK_0;
213 max_idx = LP87565_BUCK_3;
214 break;
215 }
216
217 for (i = min_idx; i <= max_idx; i++) {
218 rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
219 &config);
220 if (IS_ERR(rdev)) {
221 dev_err(lp87565->dev, "failed to register %s regulator\n",
222 pdev->name);
223 return PTR_ERR(rdev);
224 }
225 }
226
227 return 0;
228}
229
230static const struct platform_device_id lp87565_regulator_id_table[] = {
231 { "lp87565-regulator", },
232 { "lp87565-q1-regulator", },
233 { /* sentinel */ }
234};
235MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
236
237static struct platform_driver lp87565_regulator_driver = {
238 .driver = {
239 .name = "lp87565-pmic",
240 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
241 },
242 .probe = lp87565_regulator_probe,
243 .id_table = lp87565_regulator_id_table,
244};
245module_platform_driver(lp87565_regulator_driver);
246
247MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
248MODULE_DESCRIPTION("LP87565 voltage regulator driver");
249MODULE_LICENSE("GPL v2");