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30e6599d AA |
1 | /* |
2 | * tps65023-regulator.c | |
3 | * | |
4 | * Supports TPS65023 Regulator | |
5 | * | |
6 | * Copyright (C) 2009 Texas Instrument 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 kind, | |
13 | * whether express or implied; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/err.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/regulator/driver.h> | |
24 | #include <linux/regulator/machine.h> | |
25 | #include <linux/i2c.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
90923351 | 27 | #include <linux/regmap.h> |
30e6599d AA |
28 | |
29 | /* Register definitions */ | |
30 | #define TPS65023_REG_VERSION 0 | |
31 | #define TPS65023_REG_PGOODZ 1 | |
32 | #define TPS65023_REG_MASK 2 | |
33 | #define TPS65023_REG_REG_CTRL 3 | |
34 | #define TPS65023_REG_CON_CTRL 4 | |
35 | #define TPS65023_REG_CON_CTRL2 5 | |
36 | #define TPS65023_REG_DEF_CORE 6 | |
37 | #define TPS65023_REG_DEFSLEW 7 | |
38 | #define TPS65023_REG_LDO_CTRL 8 | |
39 | ||
40 | /* PGOODZ bitfields */ | |
41 | #define TPS65023_PGOODZ_PWRFAILZ BIT(7) | |
42 | #define TPS65023_PGOODZ_LOWBATTZ BIT(6) | |
43 | #define TPS65023_PGOODZ_VDCDC1 BIT(5) | |
44 | #define TPS65023_PGOODZ_VDCDC2 BIT(4) | |
45 | #define TPS65023_PGOODZ_VDCDC3 BIT(3) | |
46 | #define TPS65023_PGOODZ_LDO2 BIT(2) | |
47 | #define TPS65023_PGOODZ_LDO1 BIT(1) | |
48 | ||
49 | /* MASK bitfields */ | |
50 | #define TPS65023_MASK_PWRFAILZ BIT(7) | |
51 | #define TPS65023_MASK_LOWBATTZ BIT(6) | |
52 | #define TPS65023_MASK_VDCDC1 BIT(5) | |
53 | #define TPS65023_MASK_VDCDC2 BIT(4) | |
54 | #define TPS65023_MASK_VDCDC3 BIT(3) | |
55 | #define TPS65023_MASK_LDO2 BIT(2) | |
56 | #define TPS65023_MASK_LDO1 BIT(1) | |
57 | ||
58 | /* REG_CTRL bitfields */ | |
59 | #define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) | |
60 | #define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) | |
61 | #define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) | |
62 | #define TPS65023_REG_CTRL_LDO2_EN BIT(2) | |
63 | #define TPS65023_REG_CTRL_LDO1_EN BIT(1) | |
64 | ||
f068ad8c MF |
65 | /* REG_CTRL2 bitfields */ |
66 | #define TPS65023_REG_CTRL2_GO BIT(7) | |
67 | #define TPS65023_REG_CTRL2_CORE_ADJ BIT(6) | |
68 | #define TPS65023_REG_CTRL2_DCDC2 BIT(2) | |
69 | #define TPS65023_REG_CTRL2_DCDC1 BIT(1) | |
70 | #define TPS65023_REG_CTRL2_DCDC3 BIT(0) | |
71 | ||
30e6599d AA |
72 | /* Number of step-down converters available */ |
73 | #define TPS65023_NUM_DCDC 3 | |
74 | /* Number of LDO voltage regulators available */ | |
75 | #define TPS65023_NUM_LDO 2 | |
76 | /* Number of total regulators available */ | |
77 | #define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) | |
78 | ||
79 | /* DCDCs */ | |
80 | #define TPS65023_DCDC_1 0 | |
81 | #define TPS65023_DCDC_2 1 | |
82 | #define TPS65023_DCDC_3 2 | |
83 | /* LDOs */ | |
84 | #define TPS65023_LDO_1 3 | |
85 | #define TPS65023_LDO_2 4 | |
86 | ||
87 | #define TPS65023_MAX_REG_ID TPS65023_LDO_2 | |
88 | ||
2d3eda67 TE |
89 | #define TPS65023_REGULATOR_DCDC(_num, _t, _em) \ |
90 | { \ | |
91 | .name = "VDCDC"#_num, \ | |
92 | .of_match = of_match_ptr("VDCDC"#_num), \ | |
93 | .regulators_node = of_match_ptr("regulators"), \ | |
94 | .id = TPS65023_DCDC_##_num, \ | |
95 | .n_voltages = ARRAY_SIZE(_t), \ | |
96 | .ops = &tps65023_dcdc_ops, \ | |
97 | .type = REGULATOR_VOLTAGE, \ | |
98 | .owner = THIS_MODULE, \ | |
99 | .volt_table = _t, \ | |
100 | .vsel_reg = TPS65023_REG_DEF_CORE, \ | |
101 | .vsel_mask = ARRAY_SIZE(_t) - 1, \ | |
102 | .enable_mask = _em, \ | |
103 | .enable_reg = TPS65023_REG_REG_CTRL, \ | |
104 | .apply_reg = TPS65023_REG_CON_CTRL2, \ | |
105 | .apply_bit = TPS65023_REG_CTRL2_GO, \ | |
106 | } \ | |
107 | ||
108 | #define TPS65023_REGULATOR_LDO(_num, _t, _vm) \ | |
109 | { \ | |
110 | .name = "LDO"#_num, \ | |
111 | .of_match = of_match_ptr("LDO"#_num), \ | |
112 | .regulators_node = of_match_ptr("regulators"), \ | |
113 | .id = TPS65023_LDO_##_num, \ | |
114 | .n_voltages = ARRAY_SIZE(_t), \ | |
115 | .ops = &tps65023_ldo_ops, \ | |
116 | .type = REGULATOR_VOLTAGE, \ | |
117 | .owner = THIS_MODULE, \ | |
118 | .volt_table = _t, \ | |
119 | .vsel_reg = TPS65023_REG_LDO_CTRL, \ | |
120 | .vsel_mask = _vm, \ | |
121 | .enable_mask = 1 << (_num), \ | |
122 | .enable_reg = TPS65023_REG_REG_CTRL, \ | |
123 | } \ | |
124 | ||
30e6599d | 125 | /* Supported voltage values for regulators */ |
ba3bd8a3 AL |
126 | static const unsigned int VCORE_VSEL_table[] = { |
127 | 800000, 825000, 850000, 875000, | |
128 | 900000, 925000, 950000, 975000, | |
129 | 1000000, 1025000, 1050000, 1075000, | |
130 | 1100000, 1125000, 1150000, 1175000, | |
131 | 1200000, 1225000, 1250000, 1275000, | |
132 | 1300000, 1325000, 1350000, 1375000, | |
133 | 1400000, 1425000, 1450000, 1475000, | |
134 | 1500000, 1525000, 1550000, 1600000, | |
135 | }; | |
136 | ||
137 | static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = { | |
138 | 3300000, | |
139 | }; | |
140 | ||
141 | static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = { | |
142 | 1800000, | |
30e6599d AA |
143 | }; |
144 | ||
437afd2a | 145 | /* Supported voltage values for LDO regulators for tps65020 */ |
2040541a | 146 | static const unsigned int TPS65020_LDO_VSEL_table[] = { |
ba3bd8a3 AL |
147 | 1000000, 1050000, 1100000, 1300000, |
148 | 1800000, 2500000, 3000000, 3300000, | |
437afd2a | 149 | }; |
1c3ede05 MF |
150 | |
151 | /* Supported voltage values for LDO regulators | |
152 | * for tps65021 and tps65023 */ | |
ba3bd8a3 AL |
153 | static const unsigned int TPS65023_LDO1_VSEL_table[] = { |
154 | 1000000, 1100000, 1300000, 1800000, | |
155 | 2200000, 2600000, 2800000, 3150000, | |
30e6599d AA |
156 | }; |
157 | ||
ba3bd8a3 AL |
158 | static const unsigned int TPS65023_LDO2_VSEL_table[] = { |
159 | 1050000, 1200000, 1300000, 1800000, | |
160 | 2500000, 2800000, 3000000, 3300000, | |
30e6599d AA |
161 | }; |
162 | ||
30e6599d AA |
163 | /* PMIC details */ |
164 | struct tps_pmic { | |
30e6599d | 165 | struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; |
2d3eda67 | 166 | const struct tps_driver_data *driver_data; |
90923351 | 167 | struct regmap *regmap; |
1c3ede05 MF |
168 | }; |
169 | ||
170 | /* Struct passed as driver data */ | |
171 | struct tps_driver_data { | |
2d3eda67 | 172 | const struct regulator_desc *desc; |
1c3ede05 | 173 | u8 core_regulator; |
30e6599d AA |
174 | }; |
175 | ||
a133829e | 176 | static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev) |
30e6599d AA |
177 | { |
178 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
46bcb006 | 179 | int dcdc = rdev_get_id(dev); |
30e6599d AA |
180 | |
181 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) | |
182 | return -EINVAL; | |
183 | ||
2d3eda67 | 184 | if (dcdc != tps->driver_data->core_regulator) |
a133829e | 185 | return 0; |
46bcb006 AL |
186 | |
187 | return regulator_get_voltage_sel_regmap(dev); | |
30e6599d AA |
188 | } |
189 | ||
7061873f AL |
190 | static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev, |
191 | unsigned selector) | |
30e6599d AA |
192 | { |
193 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
194 | int dcdc = rdev_get_id(dev); | |
30e6599d | 195 | |
2d3eda67 | 196 | if (dcdc != tps->driver_data->core_regulator) |
30e6599d | 197 | return -EINVAL; |
30e6599d | 198 | |
46bcb006 | 199 | return regulator_set_voltage_sel_regmap(dev, selector); |
30e6599d AA |
200 | } |
201 | ||
30e6599d | 202 | /* Operations permitted on VDCDCx */ |
4604a061 | 203 | static const struct regulator_ops tps65023_dcdc_ops = { |
ee7b1914 AL |
204 | .is_enabled = regulator_is_enabled_regmap, |
205 | .enable = regulator_enable_regmap, | |
206 | .disable = regulator_disable_regmap, | |
a133829e | 207 | .get_voltage_sel = tps65023_dcdc_get_voltage_sel, |
7061873f | 208 | .set_voltage_sel = tps65023_dcdc_set_voltage_sel, |
ba3bd8a3 | 209 | .list_voltage = regulator_list_voltage_table, |
c4bbfbd5 | 210 | .map_voltage = regulator_map_voltage_ascend, |
30e6599d AA |
211 | }; |
212 | ||
213 | /* Operations permitted on LDOx */ | |
4604a061 | 214 | static const struct regulator_ops tps65023_ldo_ops = { |
ee7b1914 AL |
215 | .is_enabled = regulator_is_enabled_regmap, |
216 | .enable = regulator_enable_regmap, | |
217 | .disable = regulator_disable_regmap, | |
e90a8447 AL |
218 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
219 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
ba3bd8a3 | 220 | .list_voltage = regulator_list_voltage_table, |
c4bbfbd5 | 221 | .map_voltage = regulator_map_voltage_ascend, |
30e6599d AA |
222 | }; |
223 | ||
4604a061 | 224 | static const struct regmap_config tps65023_regmap_config = { |
90923351 MB |
225 | .reg_bits = 8, |
226 | .val_bits = 8, | |
227 | }; | |
228 | ||
2d3eda67 TE |
229 | static const struct regulator_desc tps65020_regulators[] = { |
230 | TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20), | |
231 | TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10), | |
232 | TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08), | |
233 | TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07), | |
234 | TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70), | |
235 | }; | |
236 | ||
237 | static const struct regulator_desc tps65021_regulators[] = { | |
238 | TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20), | |
239 | TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10), | |
240 | TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08), | |
241 | TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07), | |
242 | TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70), | |
243 | }; | |
244 | ||
245 | static const struct regulator_desc tps65023_regulators[] = { | |
246 | TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20), | |
247 | TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10), | |
248 | TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_VSEL_table, 0x08), | |
249 | TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07), | |
250 | TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70), | |
251 | }; | |
252 | ||
253 | static struct tps_driver_data tps65020_drv_data = { | |
254 | .desc = tps65020_regulators, | |
255 | .core_regulator = TPS65023_DCDC_3, | |
256 | }; | |
257 | ||
258 | static struct tps_driver_data tps65021_drv_data = { | |
259 | .desc = tps65021_regulators, | |
260 | .core_regulator = TPS65023_DCDC_3, | |
261 | }; | |
262 | ||
263 | static struct tps_driver_data tps65023_drv_data = { | |
264 | .desc = tps65023_regulators, | |
265 | .core_regulator = TPS65023_DCDC_1, | |
266 | }; | |
267 | ||
a5023574 | 268 | static int tps_65023_probe(struct i2c_client *client, |
54d13ab1 | 269 | const struct i2c_device_id *id) |
30e6599d | 270 | { |
2d3eda67 | 271 | struct regulator_init_data *init_data = dev_get_platdata(&client->dev); |
c172708d | 272 | struct regulator_config config = { }; |
30e6599d AA |
273 | struct tps_pmic *tps; |
274 | int i; | |
54d13ab1 | 275 | int error; |
30e6599d | 276 | |
19a8da21 | 277 | tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); |
30e6599d AA |
278 | if (!tps) |
279 | return -ENOMEM; | |
280 | ||
2d3eda67 TE |
281 | tps->driver_data = (struct tps_driver_data *)id->driver_data; |
282 | ||
19a8da21 | 283 | tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config); |
90923351 MB |
284 | if (IS_ERR(tps->regmap)) { |
285 | error = PTR_ERR(tps->regmap); | |
286 | dev_err(&client->dev, "Failed to allocate register map: %d\n", | |
287 | error); | |
19a8da21 | 288 | return error; |
90923351 | 289 | } |
30e6599d AA |
290 | |
291 | /* common for all regulators */ | |
2d3eda67 TE |
292 | config.dev = &client->dev; |
293 | config.driver_data = tps; | |
294 | config.regmap = tps->regmap; | |
ee7b1914 | 295 | |
2d3eda67 TE |
296 | for (i = 0; i < TPS65023_NUM_REGULATOR; i++) { |
297 | if (init_data) | |
298 | config.init_data = &init_data[i]; | |
c172708d | 299 | |
30e6599d | 300 | /* Register the regulators */ |
2d3eda67 TE |
301 | tps->rdev[i] = devm_regulator_register(&client->dev, |
302 | &tps->driver_data->desc[i], &config); | |
303 | if (IS_ERR(tps->rdev[i])) { | |
30e6599d AA |
304 | dev_err(&client->dev, "failed to register %s\n", |
305 | id->name); | |
2d3eda67 | 306 | return PTR_ERR(tps->rdev[i]); |
30e6599d | 307 | } |
30e6599d AA |
308 | } |
309 | ||
310 | i2c_set_clientdata(client, tps); | |
311 | ||
fc999b83 | 312 | /* Enable setting output voltage by I2C */ |
43530b69 | 313 | regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2, |
5ee034e6 JH |
314 | TPS65023_REG_CTRL2_CORE_ADJ, |
315 | TPS65023_REG_CTRL2_CORE_ADJ); | |
fc999b83 | 316 | |
30e6599d | 317 | return 0; |
30e6599d AA |
318 | } |
319 | ||
2d3eda67 TE |
320 | static const struct of_device_id tps65023_of_match[] = { |
321 | { .compatible = "ti,tps65020", .data = &tps65020_drv_data}, | |
322 | { .compatible = "ti,tps65021", .data = &tps65021_drv_data}, | |
323 | { .compatible = "ti,tps65023", .data = &tps65023_drv_data}, | |
324 | {}, | |
1c3ede05 | 325 | }; |
2d3eda67 | 326 | MODULE_DEVICE_TABLE(of, tps65023_of_match); |
1c3ede05 | 327 | |
2d3eda67 | 328 | static const struct i2c_device_id tps_65023_id[] = { |
30e6599d | 329 | { |
2d3eda67 TE |
330 | .name = "tps65023", |
331 | .driver_data = (kernel_ulong_t)&tps65023_drv_data | |
332 | }, { | |
333 | .name = "tps65021", | |
334 | .driver_data = (kernel_ulong_t)&tps65021_drv_data | |
335 | }, { | |
336 | .name = "tps65020", | |
337 | .driver_data = (kernel_ulong_t)&tps65020_drv_data | |
30e6599d | 338 | }, |
9e108d33 | 339 | { }, |
30e6599d | 340 | }; |
30e6599d AA |
341 | MODULE_DEVICE_TABLE(i2c, tps_65023_id); |
342 | ||
343 | static struct i2c_driver tps_65023_i2c_driver = { | |
344 | .driver = { | |
345 | .name = "tps65023", | |
2d3eda67 | 346 | .of_match_table = of_match_ptr(tps65023_of_match), |
30e6599d AA |
347 | }, |
348 | .probe = tps_65023_probe, | |
9e108d33 | 349 | .id_table = tps_65023_id, |
30e6599d AA |
350 | }; |
351 | ||
30e6599d AA |
352 | static int __init tps_65023_init(void) |
353 | { | |
354 | return i2c_add_driver(&tps_65023_i2c_driver); | |
355 | } | |
356 | subsys_initcall(tps_65023_init); | |
357 | ||
30e6599d AA |
358 | static void __exit tps_65023_cleanup(void) |
359 | { | |
360 | i2c_del_driver(&tps_65023_i2c_driver); | |
361 | } | |
362 | module_exit(tps_65023_cleanup); | |
363 | ||
364 | MODULE_AUTHOR("Texas Instruments"); | |
365 | MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); | |
9e108d33 | 366 | MODULE_LICENSE("GPL v2"); |