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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tps65023-regulator.c
4 *
5 * Supports TPS65023 Regulator
6 *
7 * Copyright (C) 2009 Texas Instrument Incorporated - https://www.ti.com/
8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/init.h>
13#include <linux/err.h>
14#include <linux/platform_device.h>
15#include <linux/regulator/driver.h>
16#include <linux/regulator/machine.h>
17#include <linux/i2c.h>
18#include <linux/slab.h>
19#include <linux/regmap.h>
20
21/* Register definitions */
22#define TPS65023_REG_VERSION 0
23#define TPS65023_REG_PGOODZ 1
24#define TPS65023_REG_MASK 2
25#define TPS65023_REG_REG_CTRL 3
26#define TPS65023_REG_CON_CTRL 4
27#define TPS65023_REG_CON_CTRL2 5
28#define TPS65023_REG_DEF_CORE 6
29#define TPS65023_REG_DEFSLEW 7
30#define TPS65023_REG_LDO_CTRL 8
31
32/* PGOODZ bitfields */
33#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
34#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
35#define TPS65023_PGOODZ_VDCDC1 BIT(5)
36#define TPS65023_PGOODZ_VDCDC2 BIT(4)
37#define TPS65023_PGOODZ_VDCDC3 BIT(3)
38#define TPS65023_PGOODZ_LDO2 BIT(2)
39#define TPS65023_PGOODZ_LDO1 BIT(1)
40
41/* MASK bitfields */
42#define TPS65023_MASK_PWRFAILZ BIT(7)
43#define TPS65023_MASK_LOWBATTZ BIT(6)
44#define TPS65023_MASK_VDCDC1 BIT(5)
45#define TPS65023_MASK_VDCDC2 BIT(4)
46#define TPS65023_MASK_VDCDC3 BIT(3)
47#define TPS65023_MASK_LDO2 BIT(2)
48#define TPS65023_MASK_LDO1 BIT(1)
49
50/* REG_CTRL bitfields */
51#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
52#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
53#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
54#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
55#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
56
57/* REG_CTRL2 bitfields */
58#define TPS65023_REG_CTRL2_GO BIT(7)
59#define TPS65023_REG_CTRL2_CORE_ADJ BIT(6)
60#define TPS65023_REG_CTRL2_DCDC2 BIT(2)
61#define TPS65023_REG_CTRL2_DCDC1 BIT(1)
62#define TPS65023_REG_CTRL2_DCDC3 BIT(0)
63
64/* Number of step-down converters available */
65#define TPS65023_NUM_DCDC 3
66/* Number of LDO voltage regulators available */
67#define TPS65023_NUM_LDO 2
68/* Number of total regulators available */
69#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
70
71/* DCDCs */
72#define TPS65023_DCDC_1 0
73#define TPS65023_DCDC_2 1
74#define TPS65023_DCDC_3 2
75/* LDOs */
76#define TPS65023_LDO_1 3
77#define TPS65023_LDO_2 4
78
79#define TPS65023_MAX_REG_ID TPS65023_LDO_2
80
81#define TPS65023_REGULATOR_DCDC(_num, _t, _em) \
82 { \
83 .name = "VDCDC"#_num, \
84 .of_match = of_match_ptr("VDCDC"#_num), \
85 .regulators_node = of_match_ptr("regulators"), \
86 .id = TPS65023_DCDC_##_num, \
87 .n_voltages = ARRAY_SIZE(_t), \
88 .ops = &tps65023_dcdc_ops, \
89 .type = REGULATOR_VOLTAGE, \
90 .owner = THIS_MODULE, \
91 .volt_table = _t, \
92 .vsel_reg = TPS65023_REG_DEF_CORE, \
93 .vsel_mask = ARRAY_SIZE(_t) - 1, \
94 .enable_mask = _em, \
95 .enable_reg = TPS65023_REG_REG_CTRL, \
96 .apply_reg = TPS65023_REG_CON_CTRL2, \
97 .apply_bit = TPS65023_REG_CTRL2_GO, \
98 } \
99
100#define TPS65023_REGULATOR_LDO(_num, _t, _vm) \
101 { \
102 .name = "LDO"#_num, \
103 .of_match = of_match_ptr("LDO"#_num), \
104 .regulators_node = of_match_ptr("regulators"), \
105 .id = TPS65023_LDO_##_num, \
106 .n_voltages = ARRAY_SIZE(_t), \
107 .ops = &tps65023_ldo_ops, \
108 .type = REGULATOR_VOLTAGE, \
109 .owner = THIS_MODULE, \
110 .volt_table = _t, \
111 .vsel_reg = TPS65023_REG_LDO_CTRL, \
112 .vsel_mask = _vm, \
113 .enable_mask = 1 << (_num), \
114 .enable_reg = TPS65023_REG_REG_CTRL, \
115 } \
116
117/* Supported voltage values for regulators */
118static const unsigned int VCORE_VSEL_table[] = {
119 800000, 825000, 850000, 875000,
120 900000, 925000, 950000, 975000,
121 1000000, 1025000, 1050000, 1075000,
122 1100000, 1125000, 1150000, 1175000,
123 1200000, 1225000, 1250000, 1275000,
124 1300000, 1325000, 1350000, 1375000,
125 1400000, 1425000, 1450000, 1475000,
126 1500000, 1525000, 1550000, 1600000,
127};
128
129static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
130 3300000,
131};
132
133static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
134 1800000,
135};
136
137/* Supported voltage values for LDO regulators for tps65020 */
138static const unsigned int TPS65020_LDO_VSEL_table[] = {
139 1000000, 1050000, 1100000, 1300000,
140 1800000, 2500000, 3000000, 3300000,
141};
142
143/* Supported voltage values for LDO regulators
144 * for tps65021 and tps65023 */
145static const unsigned int TPS65023_LDO1_VSEL_table[] = {
146 1000000, 1100000, 1300000, 1800000,
147 2200000, 2600000, 2800000, 3150000,
148};
149
150static const unsigned int TPS65023_LDO2_VSEL_table[] = {
151 1050000, 1200000, 1300000, 1800000,
152 2500000, 2800000, 3000000, 3300000,
153};
154
155/* PMIC details */
156struct tps_pmic {
157 struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
158 const struct tps_driver_data *driver_data;
159 struct regmap *regmap;
160};
161
162/* Struct passed as driver data */
163struct tps_driver_data {
164 const struct regulator_desc *desc;
165 u8 core_regulator;
166};
167
168static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
169{
170 struct tps_pmic *tps = rdev_get_drvdata(dev);
171 int dcdc = rdev_get_id(dev);
172
173 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
174 return -EINVAL;
175
176 if (dcdc != tps->driver_data->core_regulator)
177 return 0;
178
179 return regulator_get_voltage_sel_regmap(dev);
180}
181
182static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
183 unsigned selector)
184{
185 struct tps_pmic *tps = rdev_get_drvdata(dev);
186 int dcdc = rdev_get_id(dev);
187
188 if (dcdc != tps->driver_data->core_regulator)
189 return -EINVAL;
190
191 return regulator_set_voltage_sel_regmap(dev, selector);
192}
193
194/* Operations permitted on VDCDCx */
195static const struct regulator_ops tps65023_dcdc_ops = {
196 .is_enabled = regulator_is_enabled_regmap,
197 .enable = regulator_enable_regmap,
198 .disable = regulator_disable_regmap,
199 .get_voltage_sel = tps65023_dcdc_get_voltage_sel,
200 .set_voltage_sel = tps65023_dcdc_set_voltage_sel,
201 .list_voltage = regulator_list_voltage_table,
202 .map_voltage = regulator_map_voltage_ascend,
203};
204
205/* Operations permitted on LDOx */
206static const struct regulator_ops tps65023_ldo_ops = {
207 .is_enabled = regulator_is_enabled_regmap,
208 .enable = regulator_enable_regmap,
209 .disable = regulator_disable_regmap,
210 .get_voltage_sel = regulator_get_voltage_sel_regmap,
211 .set_voltage_sel = regulator_set_voltage_sel_regmap,
212 .list_voltage = regulator_list_voltage_table,
213 .map_voltage = regulator_map_voltage_ascend,
214};
215
216static const struct regmap_config tps65023_regmap_config = {
217 .reg_bits = 8,
218 .val_bits = 8,
219};
220
221static const struct regulator_desc tps65020_regulators[] = {
222 TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
223 TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
224 TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
225 TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07),
226 TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70),
227};
228
229static const struct regulator_desc tps65021_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, TPS65023_LDO1_VSEL_table, 0x07),
234 TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
235};
236
237static const struct regulator_desc tps65023_regulators[] = {
238 TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20),
239 TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10),
240 TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_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
245static const struct tps_driver_data tps65020_drv_data = {
246 .desc = tps65020_regulators,
247 .core_regulator = TPS65023_DCDC_3,
248};
249
250static const struct tps_driver_data tps65021_drv_data = {
251 .desc = tps65021_regulators,
252 .core_regulator = TPS65023_DCDC_3,
253};
254
255static const struct tps_driver_data tps65023_drv_data = {
256 .desc = tps65023_regulators,
257 .core_regulator = TPS65023_DCDC_1,
258};
259
260static int tps_65023_probe(struct i2c_client *client)
261{
262 const struct i2c_device_id *id = i2c_client_get_device_id(client);
263 struct regulator_init_data *init_data = dev_get_platdata(&client->dev);
264 struct regulator_config config = { };
265 struct tps_pmic *tps;
266 int i;
267 int error;
268
269 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
270 if (!tps)
271 return -ENOMEM;
272
273 tps->driver_data = (struct tps_driver_data *)id->driver_data;
274
275 tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
276 if (IS_ERR(tps->regmap)) {
277 error = PTR_ERR(tps->regmap);
278 dev_err(&client->dev, "Failed to allocate register map: %d\n",
279 error);
280 return error;
281 }
282
283 /* common for all regulators */
284 config.dev = &client->dev;
285 config.driver_data = tps;
286 config.regmap = tps->regmap;
287
288 for (i = 0; i < TPS65023_NUM_REGULATOR; i++) {
289 if (init_data)
290 config.init_data = &init_data[i];
291
292 /* Register the regulators */
293 tps->rdev[i] = devm_regulator_register(&client->dev,
294 &tps->driver_data->desc[i], &config);
295 if (IS_ERR(tps->rdev[i])) {
296 dev_err(&client->dev, "failed to register %s\n",
297 id->name);
298 return PTR_ERR(tps->rdev[i]);
299 }
300 }
301
302 i2c_set_clientdata(client, tps);
303
304 /* Enable setting output voltage by I2C */
305 regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
306 TPS65023_REG_CTRL2_CORE_ADJ, 0);
307
308 return 0;
309}
310
311static const struct of_device_id __maybe_unused tps65023_of_match[] = {
312 { .compatible = "ti,tps65020", .data = &tps65020_drv_data},
313 { .compatible = "ti,tps65021", .data = &tps65021_drv_data},
314 { .compatible = "ti,tps65023", .data = &tps65023_drv_data},
315 {},
316};
317MODULE_DEVICE_TABLE(of, tps65023_of_match);
318
319static const struct i2c_device_id tps_65023_id[] = {
320 {
321 .name = "tps65023",
322 .driver_data = (kernel_ulong_t)&tps65023_drv_data
323 }, {
324 .name = "tps65021",
325 .driver_data = (kernel_ulong_t)&tps65021_drv_data
326 }, {
327 .name = "tps65020",
328 .driver_data = (kernel_ulong_t)&tps65020_drv_data
329 },
330 { },
331};
332MODULE_DEVICE_TABLE(i2c, tps_65023_id);
333
334static struct i2c_driver tps_65023_i2c_driver = {
335 .driver = {
336 .name = "tps65023",
337 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
338 .of_match_table = of_match_ptr(tps65023_of_match),
339 },
340 .probe = tps_65023_probe,
341 .id_table = tps_65023_id,
342};
343
344static int __init tps_65023_init(void)
345{
346 return i2c_add_driver(&tps_65023_i2c_driver);
347}
348subsys_initcall(tps_65023_init);
349
350static void __exit tps_65023_cleanup(void)
351{
352 i2c_del_driver(&tps_65023_i2c_driver);
353}
354module_exit(tps_65023_cleanup);
355
356MODULE_AUTHOR("Texas Instruments");
357MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
358MODULE_LICENSE("GPL v2");
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>
26#include <linux/delay.h>
27#include <linux/slab.h>
28#include <linux/regmap.h>
29
30/* Register definitions */
31#define TPS65023_REG_VERSION 0
32#define TPS65023_REG_PGOODZ 1
33#define TPS65023_REG_MASK 2
34#define TPS65023_REG_REG_CTRL 3
35#define TPS65023_REG_CON_CTRL 4
36#define TPS65023_REG_CON_CTRL2 5
37#define TPS65023_REG_DEF_CORE 6
38#define TPS65023_REG_DEFSLEW 7
39#define TPS65023_REG_LDO_CTRL 8
40
41/* PGOODZ bitfields */
42#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
43#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
44#define TPS65023_PGOODZ_VDCDC1 BIT(5)
45#define TPS65023_PGOODZ_VDCDC2 BIT(4)
46#define TPS65023_PGOODZ_VDCDC3 BIT(3)
47#define TPS65023_PGOODZ_LDO2 BIT(2)
48#define TPS65023_PGOODZ_LDO1 BIT(1)
49
50/* MASK bitfields */
51#define TPS65023_MASK_PWRFAILZ BIT(7)
52#define TPS65023_MASK_LOWBATTZ BIT(6)
53#define TPS65023_MASK_VDCDC1 BIT(5)
54#define TPS65023_MASK_VDCDC2 BIT(4)
55#define TPS65023_MASK_VDCDC3 BIT(3)
56#define TPS65023_MASK_LDO2 BIT(2)
57#define TPS65023_MASK_LDO1 BIT(1)
58
59/* REG_CTRL bitfields */
60#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
61#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
62#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
63#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
64#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
65
66/* LDO_CTRL bitfields */
67#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4)
68#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4))
69
70/* Number of step-down converters available */
71#define TPS65023_NUM_DCDC 3
72/* Number of LDO voltage regulators available */
73#define TPS65023_NUM_LDO 2
74/* Number of total regulators available */
75#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
76
77/* DCDCs */
78#define TPS65023_DCDC_1 0
79#define TPS65023_DCDC_2 1
80#define TPS65023_DCDC_3 2
81/* LDOs */
82#define TPS65023_LDO_1 3
83#define TPS65023_LDO_2 4
84
85#define TPS65023_MAX_REG_ID TPS65023_LDO_2
86
87/* Supported voltage values for regulators */
88static const u16 VDCDC1_VSEL_table[] = {
89 800, 825, 850, 875,
90 900, 925, 950, 975,
91 1000, 1025, 1050, 1075,
92 1100, 1125, 1150, 1175,
93 1200, 1225, 1250, 1275,
94 1300, 1325, 1350, 1375,
95 1400, 1425, 1450, 1475,
96 1500, 1525, 1550, 1600,
97};
98
99static const u16 LDO1_VSEL_table[] = {
100 1000, 1100, 1300, 1800,
101 2200, 2600, 2800, 3150,
102};
103
104static const u16 LDO2_VSEL_table[] = {
105 1050, 1200, 1300, 1800,
106 2500, 2800, 3000, 3300,
107};
108
109static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table),
110 0, 0, ARRAY_SIZE(LDO1_VSEL_table),
111 ARRAY_SIZE(LDO2_VSEL_table)};
112
113/* Regulator specific details */
114struct tps_info {
115 const char *name;
116 unsigned min_uV;
117 unsigned max_uV;
118 bool fixed;
119 u8 table_len;
120 const u16 *table;
121};
122
123/* PMIC details */
124struct tps_pmic {
125 struct regulator_desc desc[TPS65023_NUM_REGULATOR];
126 struct i2c_client *client;
127 struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
128 const struct tps_info *info[TPS65023_NUM_REGULATOR];
129 struct regmap *regmap;
130};
131
132static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
133{
134 return regmap_update_bits(tps->regmap, reg, mask, mask);
135}
136
137static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
138{
139 return regmap_update_bits(tps->regmap, reg, mask, 0);
140}
141
142static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg)
143{
144 unsigned int val;
145 int ret;
146
147 ret = regmap_read(tps->regmap, reg, &val);
148
149 if (ret != 0)
150 return ret;
151 else
152 return val;
153}
154
155static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
156{
157 return regmap_write(tps->regmap, reg, val);
158}
159
160static int tps65023_dcdc_is_enabled(struct regulator_dev *dev)
161{
162 struct tps_pmic *tps = rdev_get_drvdata(dev);
163 int data, dcdc = rdev_get_id(dev);
164 u8 shift;
165
166 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
167 return -EINVAL;
168
169 shift = TPS65023_NUM_REGULATOR - dcdc;
170 data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
171
172 if (data < 0)
173 return data;
174 else
175 return (data & 1<<shift) ? 1 : 0;
176}
177
178static int tps65023_ldo_is_enabled(struct regulator_dev *dev)
179{
180 struct tps_pmic *tps = rdev_get_drvdata(dev);
181 int data, ldo = rdev_get_id(dev);
182 u8 shift;
183
184 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
185 return -EINVAL;
186
187 shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
188 data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
189
190 if (data < 0)
191 return data;
192 else
193 return (data & 1<<shift) ? 1 : 0;
194}
195
196static int tps65023_dcdc_enable(struct regulator_dev *dev)
197{
198 struct tps_pmic *tps = rdev_get_drvdata(dev);
199 int dcdc = rdev_get_id(dev);
200 u8 shift;
201
202 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
203 return -EINVAL;
204
205 shift = TPS65023_NUM_REGULATOR - dcdc;
206 return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
207}
208
209static int tps65023_dcdc_disable(struct regulator_dev *dev)
210{
211 struct tps_pmic *tps = rdev_get_drvdata(dev);
212 int dcdc = rdev_get_id(dev);
213 u8 shift;
214
215 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
216 return -EINVAL;
217
218 shift = TPS65023_NUM_REGULATOR - dcdc;
219 return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
220}
221
222static int tps65023_ldo_enable(struct regulator_dev *dev)
223{
224 struct tps_pmic *tps = rdev_get_drvdata(dev);
225 int ldo = rdev_get_id(dev);
226 u8 shift;
227
228 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
229 return -EINVAL;
230
231 shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
232 return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
233}
234
235static int tps65023_ldo_disable(struct regulator_dev *dev)
236{
237 struct tps_pmic *tps = rdev_get_drvdata(dev);
238 int ldo = rdev_get_id(dev);
239 u8 shift;
240
241 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
242 return -EINVAL;
243
244 shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
245 return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
246}
247
248static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
249{
250 struct tps_pmic *tps = rdev_get_drvdata(dev);
251 int data, dcdc = rdev_get_id(dev);
252
253 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
254 return -EINVAL;
255
256 if (dcdc == TPS65023_DCDC_1) {
257 data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE);
258 if (data < 0)
259 return data;
260 data &= (tps->info[dcdc]->table_len - 1);
261 return tps->info[dcdc]->table[data] * 1000;
262 } else
263 return tps->info[dcdc]->min_uV;
264}
265
266static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
267 int min_uV, int max_uV,
268 unsigned *selector)
269{
270 struct tps_pmic *tps = rdev_get_drvdata(dev);
271 int dcdc = rdev_get_id(dev);
272 int vsel;
273
274 if (dcdc != TPS65023_DCDC_1)
275 return -EINVAL;
276
277 if (min_uV < tps->info[dcdc]->min_uV
278 || min_uV > tps->info[dcdc]->max_uV)
279 return -EINVAL;
280 if (max_uV < tps->info[dcdc]->min_uV
281 || max_uV > tps->info[dcdc]->max_uV)
282 return -EINVAL;
283
284 for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
285 int mV = tps->info[dcdc]->table[vsel];
286 int uV = mV * 1000;
287
288 /* Break at the first in-range value */
289 if (min_uV <= uV && uV <= max_uV)
290 break;
291 }
292
293 *selector = vsel;
294
295 /* write to the register in case we found a match */
296 if (vsel == tps->info[dcdc]->table_len)
297 return -EINVAL;
298 else
299 return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel);
300}
301
302static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
303{
304 struct tps_pmic *tps = rdev_get_drvdata(dev);
305 int data, ldo = rdev_get_id(dev);
306
307 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
308 return -EINVAL;
309
310 data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
311 if (data < 0)
312 return data;
313
314 data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
315 data &= (tps->info[ldo]->table_len - 1);
316 return tps->info[ldo]->table[data] * 1000;
317}
318
319static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
320 int min_uV, int max_uV, unsigned *selector)
321{
322 struct tps_pmic *tps = rdev_get_drvdata(dev);
323 int data, vsel, ldo = rdev_get_id(dev);
324
325 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
326 return -EINVAL;
327
328 if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
329 return -EINVAL;
330 if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
331 return -EINVAL;
332
333 for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
334 int mV = tps->info[ldo]->table[vsel];
335 int uV = mV * 1000;
336
337 /* Break at the first in-range value */
338 if (min_uV <= uV && uV <= max_uV)
339 break;
340 }
341
342 if (vsel == tps->info[ldo]->table_len)
343 return -EINVAL;
344
345 *selector = vsel;
346
347 data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
348 if (data < 0)
349 return data;
350
351 data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1);
352 data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)));
353 return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data);
354}
355
356static int tps65023_dcdc_list_voltage(struct regulator_dev *dev,
357 unsigned selector)
358{
359 struct tps_pmic *tps = rdev_get_drvdata(dev);
360 int dcdc = rdev_get_id(dev);
361
362 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
363 return -EINVAL;
364
365 if (dcdc == TPS65023_DCDC_1) {
366 if (selector >= tps->info[dcdc]->table_len)
367 return -EINVAL;
368 else
369 return tps->info[dcdc]->table[selector] * 1000;
370 } else
371 return tps->info[dcdc]->min_uV;
372}
373
374static int tps65023_ldo_list_voltage(struct regulator_dev *dev,
375 unsigned selector)
376{
377 struct tps_pmic *tps = rdev_get_drvdata(dev);
378 int ldo = rdev_get_id(dev);
379
380 if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
381 return -EINVAL;
382
383 if (selector >= tps->info[ldo]->table_len)
384 return -EINVAL;
385 else
386 return tps->info[ldo]->table[selector] * 1000;
387}
388
389/* Operations permitted on VDCDCx */
390static struct regulator_ops tps65023_dcdc_ops = {
391 .is_enabled = tps65023_dcdc_is_enabled,
392 .enable = tps65023_dcdc_enable,
393 .disable = tps65023_dcdc_disable,
394 .get_voltage = tps65023_dcdc_get_voltage,
395 .set_voltage = tps65023_dcdc_set_voltage,
396 .list_voltage = tps65023_dcdc_list_voltage,
397};
398
399/* Operations permitted on LDOx */
400static struct regulator_ops tps65023_ldo_ops = {
401 .is_enabled = tps65023_ldo_is_enabled,
402 .enable = tps65023_ldo_enable,
403 .disable = tps65023_ldo_disable,
404 .get_voltage = tps65023_ldo_get_voltage,
405 .set_voltage = tps65023_ldo_set_voltage,
406 .list_voltage = tps65023_ldo_list_voltage,
407};
408
409static struct regmap_config tps65023_regmap_config = {
410 .reg_bits = 8,
411 .val_bits = 8,
412};
413
414static int __devinit tps_65023_probe(struct i2c_client *client,
415 const struct i2c_device_id *id)
416{
417 const struct tps_info *info = (void *)id->driver_data;
418 struct regulator_init_data *init_data;
419 struct regulator_dev *rdev;
420 struct tps_pmic *tps;
421 int i;
422 int error;
423
424 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
425 return -EIO;
426
427 /**
428 * init_data points to array of regulator_init structures
429 * coming from the board-evm file.
430 */
431 init_data = client->dev.platform_data;
432 if (!init_data)
433 return -EIO;
434
435 tps = kzalloc(sizeof(*tps), GFP_KERNEL);
436 if (!tps)
437 return -ENOMEM;
438
439 tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config);
440 if (IS_ERR(tps->regmap)) {
441 error = PTR_ERR(tps->regmap);
442 dev_err(&client->dev, "Failed to allocate register map: %d\n",
443 error);
444 goto fail_alloc;
445 }
446
447 /* common for all regulators */
448 tps->client = client;
449
450 for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
451 /* Store regulator specific information */
452 tps->info[i] = info;
453
454 tps->desc[i].name = info->name;
455 tps->desc[i].id = i;
456 tps->desc[i].n_voltages = num_voltages[i];
457 tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
458 &tps65023_ldo_ops : &tps65023_dcdc_ops);
459 tps->desc[i].type = REGULATOR_VOLTAGE;
460 tps->desc[i].owner = THIS_MODULE;
461
462 /* Register the regulators */
463 rdev = regulator_register(&tps->desc[i], &client->dev,
464 init_data, tps);
465 if (IS_ERR(rdev)) {
466 dev_err(&client->dev, "failed to register %s\n",
467 id->name);
468 error = PTR_ERR(rdev);
469 goto fail;
470 }
471
472 /* Save regulator for cleanup */
473 tps->rdev[i] = rdev;
474 }
475
476 i2c_set_clientdata(client, tps);
477
478 return 0;
479
480 fail:
481 while (--i >= 0)
482 regulator_unregister(tps->rdev[i]);
483
484 regmap_exit(tps->regmap);
485 fail_alloc:
486 kfree(tps);
487 return error;
488}
489
490/**
491 * tps_65023_remove - TPS65023 driver i2c remove handler
492 * @client: i2c driver client device structure
493 *
494 * Unregister TPS driver as an i2c client device driver
495 */
496static int __devexit tps_65023_remove(struct i2c_client *client)
497{
498 struct tps_pmic *tps = i2c_get_clientdata(client);
499 int i;
500
501 for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
502 regulator_unregister(tps->rdev[i]);
503
504 regmap_exit(tps->regmap);
505 kfree(tps);
506
507 return 0;
508}
509
510static const struct tps_info tps65023_regs[] = {
511 {
512 .name = "VDCDC1",
513 .min_uV = 800000,
514 .max_uV = 1600000,
515 .table_len = ARRAY_SIZE(VDCDC1_VSEL_table),
516 .table = VDCDC1_VSEL_table,
517 },
518 {
519 .name = "VDCDC2",
520 .min_uV = 3300000,
521 .max_uV = 3300000,
522 .fixed = 1,
523 },
524 {
525 .name = "VDCDC3",
526 .min_uV = 1800000,
527 .max_uV = 1800000,
528 .fixed = 1,
529 },
530 {
531 .name = "LDO1",
532 .min_uV = 1000000,
533 .max_uV = 3150000,
534 .table_len = ARRAY_SIZE(LDO1_VSEL_table),
535 .table = LDO1_VSEL_table,
536 },
537 {
538 .name = "LDO2",
539 .min_uV = 1050000,
540 .max_uV = 3300000,
541 .table_len = ARRAY_SIZE(LDO2_VSEL_table),
542 .table = LDO2_VSEL_table,
543 },
544};
545
546static const struct i2c_device_id tps_65023_id[] = {
547 {.name = "tps65023",
548 .driver_data = (unsigned long) tps65023_regs,},
549 {.name = "tps65021",
550 .driver_data = (unsigned long) tps65023_regs,},
551 { },
552};
553
554MODULE_DEVICE_TABLE(i2c, tps_65023_id);
555
556static struct i2c_driver tps_65023_i2c_driver = {
557 .driver = {
558 .name = "tps65023",
559 .owner = THIS_MODULE,
560 },
561 .probe = tps_65023_probe,
562 .remove = __devexit_p(tps_65023_remove),
563 .id_table = tps_65023_id,
564};
565
566/**
567 * tps_65023_init
568 *
569 * Module init function
570 */
571static int __init tps_65023_init(void)
572{
573 return i2c_add_driver(&tps_65023_i2c_driver);
574}
575subsys_initcall(tps_65023_init);
576
577/**
578 * tps_65023_cleanup
579 *
580 * Module exit function
581 */
582static void __exit tps_65023_cleanup(void)
583{
584 i2c_del_driver(&tps_65023_i2c_driver);
585}
586module_exit(tps_65023_cleanup);
587
588MODULE_AUTHOR("Texas Instruments");
589MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
590MODULE_LICENSE("GPL v2");