1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* tps65023-regulator.c
*
* Supports TPS65023 Regulator
*
* Copyright (C) 2009 Texas Instrument Incorporated - https://www.ti.com/
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>
/* Register definitions */
#define TPS65023_REG_VERSION 0
#define TPS65023_REG_PGOODZ 1
#define TPS65023_REG_MASK 2
#define TPS65023_REG_REG_CTRL 3
#define TPS65023_REG_CON_CTRL 4
#define TPS65023_REG_CON_CTRL2 5
#define TPS65023_REG_DEF_CORE 6
#define TPS65023_REG_DEFSLEW 7
#define TPS65023_REG_LDO_CTRL 8
/* PGOODZ bitfields */
#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
#define TPS65023_PGOODZ_VDCDC1 BIT(5)
#define TPS65023_PGOODZ_VDCDC2 BIT(4)
#define TPS65023_PGOODZ_VDCDC3 BIT(3)
#define TPS65023_PGOODZ_LDO2 BIT(2)
#define TPS65023_PGOODZ_LDO1 BIT(1)
/* MASK bitfields */
#define TPS65023_MASK_PWRFAILZ BIT(7)
#define TPS65023_MASK_LOWBATTZ BIT(6)
#define TPS65023_MASK_VDCDC1 BIT(5)
#define TPS65023_MASK_VDCDC2 BIT(4)
#define TPS65023_MASK_VDCDC3 BIT(3)
#define TPS65023_MASK_LDO2 BIT(2)
#define TPS65023_MASK_LDO1 BIT(1)
/* REG_CTRL bitfields */
#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
/* REG_CTRL2 bitfields */
#define TPS65023_REG_CTRL2_GO BIT(7)
#define TPS65023_REG_CTRL2_CORE_ADJ BIT(6)
#define TPS65023_REG_CTRL2_DCDC2 BIT(2)
#define TPS65023_REG_CTRL2_DCDC1 BIT(1)
#define TPS65023_REG_CTRL2_DCDC3 BIT(0)
/* Number of step-down converters available */
#define TPS65023_NUM_DCDC 3
/* Number of LDO voltage regulators available */
#define TPS65023_NUM_LDO 2
/* Number of total regulators available */
#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
/* DCDCs */
#define TPS65023_DCDC_1 0
#define TPS65023_DCDC_2 1
#define TPS65023_DCDC_3 2
/* LDOs */
#define TPS65023_LDO_1 3
#define TPS65023_LDO_2 4
#define TPS65023_MAX_REG_ID TPS65023_LDO_2
#define TPS65023_REGULATOR_DCDC(_num, _t, _em) \
{ \
.name = "VDCDC"#_num, \
.of_match = of_match_ptr("VDCDC"#_num), \
.regulators_node = of_match_ptr("regulators"), \
.id = TPS65023_DCDC_##_num, \
.n_voltages = ARRAY_SIZE(_t), \
.ops = &tps65023_dcdc_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.volt_table = _t, \
.vsel_reg = TPS65023_REG_DEF_CORE, \
.vsel_mask = ARRAY_SIZE(_t) - 1, \
.enable_mask = _em, \
.enable_reg = TPS65023_REG_REG_CTRL, \
.apply_reg = TPS65023_REG_CON_CTRL2, \
.apply_bit = TPS65023_REG_CTRL2_GO, \
} \
#define TPS65023_REGULATOR_LDO(_num, _t, _vm) \
{ \
.name = "LDO"#_num, \
.of_match = of_match_ptr("LDO"#_num), \
.regulators_node = of_match_ptr("regulators"), \
.id = TPS65023_LDO_##_num, \
.n_voltages = ARRAY_SIZE(_t), \
.ops = &tps65023_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.volt_table = _t, \
.vsel_reg = TPS65023_REG_LDO_CTRL, \
.vsel_mask = _vm, \
.enable_mask = 1 << (_num), \
.enable_reg = TPS65023_REG_REG_CTRL, \
} \
/* Supported voltage values for regulators */
static const unsigned int VCORE_VSEL_table[] = {
800000, 825000, 850000, 875000,
900000, 925000, 950000, 975000,
1000000, 1025000, 1050000, 1075000,
1100000, 1125000, 1150000, 1175000,
1200000, 1225000, 1250000, 1275000,
1300000, 1325000, 1350000, 1375000,
1400000, 1425000, 1450000, 1475000,
1500000, 1525000, 1550000, 1600000,
};
static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
3300000,
};
static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
1800000,
};
/* Supported voltage values for LDO regulators for tps65020 */
static const unsigned int TPS65020_LDO_VSEL_table[] = {
1000000, 1050000, 1100000, 1300000,
1800000, 2500000, 3000000, 3300000,
};
/* Supported voltage values for LDO regulators
* for tps65021 and tps65023 */
static const unsigned int TPS65023_LDO1_VSEL_table[] = {
1000000, 1100000, 1300000, 1800000,
2200000, 2600000, 2800000, 3150000,
};
static const unsigned int TPS65023_LDO2_VSEL_table[] = {
1050000, 1200000, 1300000, 1800000,
2500000, 2800000, 3000000, 3300000,
};
/* PMIC details */
struct tps_pmic {
struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
const struct tps_driver_data *driver_data;
struct regmap *regmap;
};
/* Struct passed as driver data */
struct tps_driver_data {
const struct regulator_desc *desc;
u8 core_regulator;
};
static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
return -EINVAL;
if (dcdc != tps->driver_data->core_regulator)
return 0;
return regulator_get_voltage_sel_regmap(dev);
}
static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
unsigned selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
if (dcdc != tps->driver_data->core_regulator)
return -EINVAL;
return regulator_set_voltage_sel_regmap(dev, selector);
}
/* Operations permitted on VDCDCx */
static const struct regulator_ops tps65023_dcdc_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = tps65023_dcdc_get_voltage_sel,
.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_ascend,
};
/* Operations permitted on LDOx */
static const struct regulator_ops tps65023_ldo_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_ascend,
};
static const struct regmap_config tps65023_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static const struct regulator_desc tps65020_regulators[] = {
TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70),
};
static const struct regulator_desc tps65021_regulators[] = {
TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
};
static const struct regulator_desc tps65023_regulators[] = {
TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
};
static struct tps_driver_data tps65020_drv_data = {
.desc = tps65020_regulators,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65021_drv_data = {
.desc = tps65021_regulators,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65023_drv_data = {
.desc = tps65023_regulators,
.core_regulator = TPS65023_DCDC_1,
};
static int tps_65023_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct regulator_init_data *init_data = dev_get_platdata(&client->dev);
struct regulator_config config = { };
struct tps_pmic *tps;
int i;
int error;
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
tps->driver_data = (struct tps_driver_data *)id->driver_data;
tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
if (IS_ERR(tps->regmap)) {
error = PTR_ERR(tps->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
error);
return error;
}
/* common for all regulators */
config.dev = &client->dev;
config.driver_data = tps;
config.regmap = tps->regmap;
for (i = 0; i < TPS65023_NUM_REGULATOR; i++) {
if (init_data)
config.init_data = &init_data[i];
/* Register the regulators */
tps->rdev[i] = devm_regulator_register(&client->dev,
&tps->driver_data->desc[i], &config);
if (IS_ERR(tps->rdev[i])) {
dev_err(&client->dev, "failed to register %s\n",
id->name);
return PTR_ERR(tps->rdev[i]);
}
}
i2c_set_clientdata(client, tps);
/* Enable setting output voltage by I2C */
regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
TPS65023_REG_CTRL2_CORE_ADJ, 0);
return 0;
}
static const struct of_device_id __maybe_unused tps65023_of_match[] = {
{ .compatible = "ti,tps65020", .data = &tps65020_drv_data},
{ .compatible = "ti,tps65021", .data = &tps65021_drv_data},
{ .compatible = "ti,tps65023", .data = &tps65023_drv_data},
{},
};
MODULE_DEVICE_TABLE(of, tps65023_of_match);
static const struct i2c_device_id tps_65023_id[] = {
{
.name = "tps65023",
.driver_data = (kernel_ulong_t)&tps65023_drv_data
}, {
.name = "tps65021",
.driver_data = (kernel_ulong_t)&tps65021_drv_data
}, {
.name = "tps65020",
.driver_data = (kernel_ulong_t)&tps65020_drv_data
},
{ },
};
MODULE_DEVICE_TABLE(i2c, tps_65023_id);
static struct i2c_driver tps_65023_i2c_driver = {
.driver = {
.name = "tps65023",
.of_match_table = of_match_ptr(tps65023_of_match),
},
.probe = tps_65023_probe,
.id_table = tps_65023_id,
};
static int __init tps_65023_init(void)
{
return i2c_add_driver(&tps_65023_i2c_driver);
}
subsys_initcall(tps_65023_init);
static void __exit tps_65023_cleanup(void)
{
i2c_del_driver(&tps_65023_i2c_driver);
}
module_exit(tps_65023_cleanup);
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
MODULE_LICENSE("GPL v2");
|
