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a493077f AC |
1 | /* |
2 | * tps65217-regulator.c | |
3 | * | |
4 | * Regulator driver for TPS65217 PMIC | |
5 | * | |
6 | * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation version 2. | |
11 | * | |
12 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
13 | * kind, whether express or implied; without even the implied warranty | |
14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/err.h> | |
23 | #include <linux/platform_device.h> | |
24 | ||
1922b0f2 | 25 | #include <linux/regulator/of_regulator.h> |
a493077f AC |
26 | #include <linux/regulator/driver.h> |
27 | #include <linux/regulator/machine.h> | |
28 | #include <linux/mfd/tps65217.h> | |
29 | ||
7d42a7f2 | 30 | #define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \ |
3de56099 | 31 | _t, _lr, _nlr, _sr, _sm) \ |
a493077f AC |
32 | { \ |
33 | .name = _name, \ | |
34 | .id = _id, \ | |
7d42a7f2 MB |
35 | .of_match = of_match_ptr(_of_match), \ |
36 | .regulators_node= of_match_ptr("regulators"), \ | |
a493077f AC |
37 | .ops = &_ops, \ |
38 | .n_voltages = _n, \ | |
39 | .type = REGULATOR_VOLTAGE, \ | |
40 | .owner = THIS_MODULE, \ | |
b4bc9ef6 AL |
41 | .vsel_reg = _vr, \ |
42 | .vsel_mask = _vm, \ | |
43 | .enable_reg = TPS65217_REG_ENABLE, \ | |
44 | .enable_mask = _em, \ | |
d172f319 | 45 | .volt_table = _t, \ |
6290d606 AL |
46 | .linear_ranges = _lr, \ |
47 | .n_linear_ranges = _nlr, \ | |
3de56099 RD |
48 | .bypass_reg = _sr, \ |
49 | .bypass_mask = _sm, \ | |
a493077f AC |
50 | } \ |
51 | ||
d172f319 | 52 | static const unsigned int LDO1_VSEL_table[] = { |
a493077f AC |
53 | 1000000, 1100000, 1200000, 1250000, |
54 | 1300000, 1350000, 1400000, 1500000, | |
55 | 1600000, 1800000, 2500000, 2750000, | |
56 | 2800000, 3000000, 3100000, 3300000, | |
57 | }; | |
58 | ||
6290d606 | 59 | static const struct regulator_linear_range tps65217_uv1_ranges[] = { |
8828bae4 AL |
60 | REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000), |
61 | REGULATOR_LINEAR_RANGE(1550000, 25, 30, 50000), | |
62 | REGULATOR_LINEAR_RANGE(1850000, 31, 52, 50000), | |
63 | REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000), | |
64 | REGULATOR_LINEAR_RANGE(3300000, 56, 62, 0), | |
6290d606 | 65 | }; |
a493077f | 66 | |
6290d606 | 67 | static const struct regulator_linear_range tps65217_uv2_ranges[] = { |
8828bae4 AL |
68 | REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000), |
69 | REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000), | |
70 | REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000), | |
a493077f AC |
71 | }; |
72 | ||
fc56911b | 73 | static int tps65217_pmic_enable(struct regulator_dev *dev) |
a493077f | 74 | { |
a493077f | 75 | struct tps65217 *tps = rdev_get_drvdata(dev); |
6bdaaf0e | 76 | int rid = rdev_get_id(dev); |
a493077f | 77 | |
fc56911b | 78 | if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) |
a493077f AC |
79 | return -EINVAL; |
80 | ||
81 | /* Enable the regulator and password protection is level 1 */ | |
82 | return tps65217_set_bits(tps, TPS65217_REG_ENABLE, | |
b4bc9ef6 AL |
83 | dev->desc->enable_mask, dev->desc->enable_mask, |
84 | TPS65217_PROTECT_L1); | |
a493077f AC |
85 | } |
86 | ||
fc56911b | 87 | static int tps65217_pmic_disable(struct regulator_dev *dev) |
a493077f AC |
88 | { |
89 | struct tps65217 *tps = rdev_get_drvdata(dev); | |
6bdaaf0e | 90 | int rid = rdev_get_id(dev); |
a493077f | 91 | |
fc56911b | 92 | if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) |
a493077f AC |
93 | return -EINVAL; |
94 | ||
95 | /* Disable the regulator and password protection is level 1 */ | |
96 | return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, | |
b4bc9ef6 | 97 | dev->desc->enable_mask, TPS65217_PROTECT_L1); |
a493077f AC |
98 | } |
99 | ||
8b22285f AL |
100 | static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev, |
101 | unsigned selector) | |
a493077f | 102 | { |
8b22285f | 103 | int ret; |
a493077f | 104 | struct tps65217 *tps = rdev_get_drvdata(dev); |
8b22285f | 105 | unsigned int rid = rdev_get_id(dev); |
a493077f | 106 | |
8b22285f | 107 | /* Set the voltage based on vsel value and write protect level is 2 */ |
b4bc9ef6 | 108 | ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, |
8b22285f | 109 | selector, TPS65217_PROTECT_L2); |
a493077f | 110 | |
8b22285f AL |
111 | /* Set GO bit for DCDCx to initiate voltage transistion */ |
112 | switch (rid) { | |
113 | case TPS65217_DCDC_1 ... TPS65217_DCDC_3: | |
114 | ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW, | |
115 | TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, | |
116 | TPS65217_PROTECT_L2); | |
117 | break; | |
118 | } | |
a493077f | 119 | |
8b22285f | 120 | return ret; |
a493077f AC |
121 | } |
122 | ||
3de56099 RD |
123 | static int tps65217_pmic_set_suspend_enable(struct regulator_dev *dev) |
124 | { | |
125 | struct tps65217 *tps = rdev_get_drvdata(dev); | |
126 | unsigned int rid = rdev_get_id(dev); | |
127 | ||
128 | if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) | |
129 | return -EINVAL; | |
130 | ||
131 | return tps65217_clear_bits(tps, dev->desc->bypass_reg, | |
132 | dev->desc->bypass_mask, | |
133 | TPS65217_PROTECT_L1); | |
134 | } | |
135 | ||
136 | static int tps65217_pmic_set_suspend_disable(struct regulator_dev *dev) | |
137 | { | |
138 | struct tps65217 *tps = rdev_get_drvdata(dev); | |
139 | unsigned int rid = rdev_get_id(dev); | |
140 | ||
141 | if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4) | |
142 | return -EINVAL; | |
143 | ||
144 | if (!tps->strobes[rid]) | |
145 | return -EINVAL; | |
146 | ||
147 | return tps65217_set_bits(tps, dev->desc->bypass_reg, | |
148 | dev->desc->bypass_mask, | |
149 | tps->strobes[rid], TPS65217_PROTECT_L1); | |
150 | } | |
151 | ||
fc56911b AL |
152 | /* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */ |
153 | static struct regulator_ops tps65217_pmic_ops = { | |
b4bc9ef6 | 154 | .is_enabled = regulator_is_enabled_regmap, |
fc56911b AL |
155 | .enable = tps65217_pmic_enable, |
156 | .disable = tps65217_pmic_disable, | |
b4bc9ef6 | 157 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
8b22285f | 158 | .set_voltage_sel = tps65217_pmic_set_voltage_sel, |
6290d606 AL |
159 | .list_voltage = regulator_list_voltage_linear_range, |
160 | .map_voltage = regulator_map_voltage_linear_range, | |
3de56099 RD |
161 | .set_suspend_enable = tps65217_pmic_set_suspend_enable, |
162 | .set_suspend_disable = tps65217_pmic_set_suspend_disable, | |
a493077f AC |
163 | }; |
164 | ||
165 | /* Operations permitted on LDO1 */ | |
166 | static struct regulator_ops tps65217_pmic_ldo1_ops = { | |
b4bc9ef6 | 167 | .is_enabled = regulator_is_enabled_regmap, |
fc56911b AL |
168 | .enable = tps65217_pmic_enable, |
169 | .disable = tps65217_pmic_disable, | |
b4bc9ef6 | 170 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
8b22285f | 171 | .set_voltage_sel = tps65217_pmic_set_voltage_sel, |
d172f319 | 172 | .list_voltage = regulator_list_voltage_table, |
5957ae1f | 173 | .map_voltage = regulator_map_voltage_ascend, |
3de56099 RD |
174 | .set_suspend_enable = tps65217_pmic_set_suspend_enable, |
175 | .set_suspend_disable = tps65217_pmic_set_suspend_disable, | |
a493077f AC |
176 | }; |
177 | ||
78637a3d | 178 | static const struct regulator_desc regulators[] = { |
7d42a7f2 MB |
179 | TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1", |
180 | tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1, | |
181 | TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN, | |
3de56099 RD |
182 | NULL, tps65217_uv1_ranges, 2, TPS65217_REG_SEQ1, |
183 | TPS65217_SEQ1_DC1_SEQ_MASK), | |
7d42a7f2 MB |
184 | TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2", |
185 | tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2, | |
186 | TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN, | |
187 | NULL, tps65217_uv1_ranges, | |
3de56099 RD |
188 | ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1, |
189 | TPS65217_SEQ1_DC2_SEQ_MASK), | |
7d42a7f2 MB |
190 | TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3", |
191 | tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3, | |
192 | TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN, | |
3de56099 RD |
193 | NULL, tps65217_uv1_ranges, 1, TPS65217_REG_SEQ2, |
194 | TPS65217_SEQ2_DC3_SEQ_MASK), | |
7d42a7f2 MB |
195 | TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1", |
196 | tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1, | |
197 | TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN, | |
3de56099 RD |
198 | LDO1_VSEL_table, NULL, 0, TPS65217_REG_SEQ2, |
199 | TPS65217_SEQ2_LDO1_SEQ_MASK), | |
7d42a7f2 MB |
200 | TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops, |
201 | 64, TPS65217_REG_DEFLDO2, | |
202 | TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN, | |
203 | NULL, tps65217_uv1_ranges, | |
3de56099 RD |
204 | ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ3, |
205 | TPS65217_SEQ3_LDO2_SEQ_MASK), | |
7d42a7f2 MB |
206 | TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops, |
207 | 32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK, | |
d172f319 | 208 | TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, |
6290d606 | 209 | NULL, tps65217_uv2_ranges, |
3de56099 RD |
210 | ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ3, |
211 | TPS65217_SEQ3_LDO3_SEQ_MASK), | |
7d42a7f2 MB |
212 | TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops, |
213 | 32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK, | |
d172f319 | 214 | TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, |
6290d606 | 215 | NULL, tps65217_uv2_ranges, |
3de56099 RD |
216 | ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ4, |
217 | TPS65217_SEQ4_LDO4_SEQ_MASK), | |
a493077f AC |
218 | }; |
219 | ||
a5023574 | 220 | static int tps65217_regulator_probe(struct platform_device *pdev) |
a493077f | 221 | { |
1922b0f2 AC |
222 | struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent); |
223 | struct tps65217_board *pdata = dev_get_platdata(tps->dev); | |
a493077f | 224 | struct regulator_dev *rdev; |
c172708d | 225 | struct regulator_config config = { }; |
3de56099 RD |
226 | int i, ret; |
227 | unsigned int val; | |
a493077f | 228 | |
1922b0f2 AC |
229 | if (tps65217_chip_id(tps) != TPS65217) { |
230 | dev_err(&pdev->dev, "Invalid tps chip version\n"); | |
231 | return -ENODEV; | |
232 | } | |
a493077f | 233 | |
3de56099 RD |
234 | /* Allocate memory for strobes */ |
235 | tps->strobes = devm_kzalloc(&pdev->dev, sizeof(u8) * | |
236 | TPS65217_NUM_REGULATOR, GFP_KERNEL); | |
237 | ||
1922b0f2 | 238 | platform_set_drvdata(pdev, tps); |
a493077f | 239 | |
1922b0f2 | 240 | for (i = 0; i < TPS65217_NUM_REGULATOR; i++) { |
1922b0f2 | 241 | /* Register the regulators */ |
1922b0f2 | 242 | config.dev = tps->dev; |
81baf9fe MB |
243 | if (pdata) |
244 | config.init_data = pdata->tps65217_init_data[i]; | |
1922b0f2 AC |
245 | config.driver_data = tps; |
246 | config.regmap = tps->regmap; | |
1922b0f2 | 247 | |
4aac198d SK |
248 | rdev = devm_regulator_register(&pdev->dev, ®ulators[i], |
249 | &config); | |
1922b0f2 AC |
250 | if (IS_ERR(rdev)) { |
251 | dev_err(tps->dev, "failed to register %s regulator\n", | |
252 | pdev->name); | |
4aac198d | 253 | return PTR_ERR(rdev); |
1922b0f2 | 254 | } |
3de56099 RD |
255 | |
256 | /* Store default strobe info */ | |
257 | ret = tps65217_reg_read(tps, regulators[i].bypass_reg, &val); | |
258 | tps->strobes[i] = val & regulators[i].bypass_mask; | |
1922b0f2 | 259 | } |
7d42a7f2 | 260 | |
a493077f | 261 | return 0; |
a493077f AC |
262 | } |
263 | ||
264 | static struct platform_driver tps65217_regulator_driver = { | |
265 | .driver = { | |
266 | .name = "tps65217-pmic", | |
267 | }, | |
268 | .probe = tps65217_regulator_probe, | |
a493077f AC |
269 | }; |
270 | ||
271 | static int __init tps65217_regulator_init(void) | |
272 | { | |
273 | return platform_driver_register(&tps65217_regulator_driver); | |
274 | } | |
275 | subsys_initcall(tps65217_regulator_init); | |
276 | ||
277 | static void __exit tps65217_regulator_exit(void) | |
278 | { | |
279 | platform_driver_unregister(&tps65217_regulator_driver); | |
280 | } | |
281 | module_exit(tps65217_regulator_exit); | |
282 | ||
a493077f AC |
283 | MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>"); |
284 | MODULE_DESCRIPTION("TPS65217 voltage regulator driver"); | |
285 | MODULE_ALIAS("platform:tps65217-pmic"); | |
286 | MODULE_LICENSE("GPL v2"); |