1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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/slab.h>
27#include <linux/regmap.h>
28
29
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
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
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
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
65
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
72
73#define TPS65023_NUM_DCDC 3
74
75#define TPS65023_NUM_LDO 2
76
77#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
78
79
80#define TPS65023_DCDC_1 0
81#define TPS65023_DCDC_2 1
82#define TPS65023_DCDC_3 2
83
84#define TPS65023_LDO_1 3
85#define TPS65023_LDO_2 4
86
87#define TPS65023_MAX_REG_ID TPS65023_LDO_2
88
89
90static const unsigned int VCORE_VSEL_table[] = {
91 800000, 825000, 850000, 875000,
92 900000, 925000, 950000, 975000,
93 1000000, 1025000, 1050000, 1075000,
94 1100000, 1125000, 1150000, 1175000,
95 1200000, 1225000, 1250000, 1275000,
96 1300000, 1325000, 1350000, 1375000,
97 1400000, 1425000, 1450000, 1475000,
98 1500000, 1525000, 1550000, 1600000,
99};
100
101static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
102 3300000,
103};
104
105static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
106 1800000,
107};
108
109
110static const unsigned int TPS65020_LDO1_VSEL_table[] = {
111 1000000, 1050000, 1100000, 1300000,
112 1800000, 2500000, 3000000, 3300000,
113};
114
115static const unsigned int TPS65020_LDO2_VSEL_table[] = {
116 1000000, 1050000, 1100000, 1300000,
117 1800000, 2500000, 3000000, 3300000,
118};
119
120
121
122static const unsigned int TPS65023_LDO1_VSEL_table[] = {
123 1000000, 1100000, 1300000, 1800000,
124 2200000, 2600000, 2800000, 3150000,
125};
126
127static const unsigned int TPS65023_LDO2_VSEL_table[] = {
128 1050000, 1200000, 1300000, 1800000,
129 2500000, 2800000, 3000000, 3300000,
130};
131
132
133struct tps_info {
134 const char *name;
135 u8 table_len;
136 const unsigned int *table;
137};
138
139
140struct tps_pmic {
141 struct regulator_desc desc[TPS65023_NUM_REGULATOR];
142 struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
143 const struct tps_info *info[TPS65023_NUM_REGULATOR];
144 struct regmap *regmap;
145 u8 core_regulator;
146};
147
148
149struct tps_driver_data {
150 const struct tps_info *info;
151 u8 core_regulator;
152};
153
154static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
155{
156 struct tps_pmic *tps = rdev_get_drvdata(dev);
157 int ret;
158 int data, dcdc = rdev_get_id(dev);
159
160 if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
161 return -EINVAL;
162
163 if (dcdc == tps->core_regulator) {
164 ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data);
165 if (ret != 0)
166 return ret;
167 data &= (tps->info[dcdc]->table_len - 1);
168 return data;
169 } else
170 return 0;
171}
172
173static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
174 unsigned selector)
175{
176 struct tps_pmic *tps = rdev_get_drvdata(dev);
177 int dcdc = rdev_get_id(dev);
178 int ret;
179
180 if (dcdc != tps->core_regulator)
181 return -EINVAL;
182
183 ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, selector);
184 if (ret)
185 goto out;
186
187
188
189
190 ret = regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
191 TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);
192
193out:
194 return ret;
195}
196
197
198static struct regulator_ops tps65023_dcdc_ops = {
199 .is_enabled = regulator_is_enabled_regmap,
200 .enable = regulator_enable_regmap,
201 .disable = regulator_disable_regmap,
202 .get_voltage_sel = tps65023_dcdc_get_voltage_sel,
203 .set_voltage_sel = tps65023_dcdc_set_voltage_sel,
204 .list_voltage = regulator_list_voltage_table,
205};
206
207
208static struct regulator_ops tps65023_ldo_ops = {
209 .is_enabled = regulator_is_enabled_regmap,
210 .enable = regulator_enable_regmap,
211 .disable = regulator_disable_regmap,
212 .get_voltage_sel = regulator_get_voltage_sel_regmap,
213 .set_voltage_sel = regulator_set_voltage_sel_regmap,
214 .list_voltage = regulator_list_voltage_table,
215};
216
217static struct regmap_config tps65023_regmap_config = {
218 .reg_bits = 8,
219 .val_bits = 8,
220};
221
222static int tps_65023_probe(struct i2c_client *client,
223 const struct i2c_device_id *id)
224{
225 const struct tps_driver_data *drv_data = (void *)id->driver_data;
226 const struct tps_info *info = drv_data->info;
227 struct regulator_config config = { };
228 struct regulator_init_data *init_data;
229 struct regulator_dev *rdev;
230 struct tps_pmic *tps;
231 int i;
232 int error;
233
234 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
235 return -EIO;
236
237
238
239
240
241 init_data = client->dev.platform_data;
242 if (!init_data)
243 return -EIO;
244
245 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
246 if (!tps)
247 return -ENOMEM;
248
249 tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
250 if (IS_ERR(tps->regmap)) {
251 error = PTR_ERR(tps->regmap);
252 dev_err(&client->dev, "Failed to allocate register map: %d\n",
253 error);
254 return error;
255 }
256
257
258 tps->core_regulator = drv_data->core_regulator;
259
260 for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
261
262 tps->info[i] = info;
263
264 tps->desc[i].name = info->name;
265 tps->desc[i].id = i;
266 tps->desc[i].n_voltages = info->table_len;
267 tps->desc[i].volt_table = info->table;
268 tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
269 &tps65023_ldo_ops : &tps65023_dcdc_ops);
270 tps->desc[i].type = REGULATOR_VOLTAGE;
271 tps->desc[i].owner = THIS_MODULE;
272
273 tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
274 switch (i) {
275 case TPS65023_LDO_1:
276 tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
277 tps->desc[i].vsel_mask = 0x07;
278 tps->desc[i].enable_mask = 1 << 1;
279 break;
280 case TPS65023_LDO_2:
281 tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
282 tps->desc[i].vsel_mask = 0x70;
283 tps->desc[i].enable_mask = 1 << 2;
284 break;
285 default:
286 tps->desc[i].enable_mask =
287 1 << (TPS65023_NUM_REGULATOR - i);
288 }
289
290 config.dev = &client->dev;
291 config.init_data = init_data;
292 config.driver_data = tps;
293 config.regmap = tps->regmap;
294
295
296 rdev = regulator_register(&tps->desc[i], &config);
297 if (IS_ERR(rdev)) {
298 dev_err(&client->dev, "failed to register %s\n",
299 id->name);
300 error = PTR_ERR(rdev);
301 goto fail;
302 }
303
304
305 tps->rdev[i] = rdev;
306 }
307
308 i2c_set_clientdata(client, tps);
309
310
311 regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
312 TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);
313
314 return 0;
315
316 fail:
317 while (--i >= 0)
318 regulator_unregister(tps->rdev[i]);
319 return error;
320}
321
322static int tps_65023_remove(struct i2c_client *client)
323{
324 struct tps_pmic *tps = i2c_get_clientdata(client);
325 int i;
326
327 for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
328 regulator_unregister(tps->rdev[i]);
329 return 0;
330}
331
332static const struct tps_info tps65020_regs[] = {
333 {
334 .name = "VDCDC1",
335 .table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
336 .table = DCDC_FIXED_3300000_VSEL_table,
337 },
338 {
339 .name = "VDCDC2",
340 .table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
341 .table = DCDC_FIXED_1800000_VSEL_table,
342 },
343 {
344 .name = "VDCDC3",
345 .table_len = ARRAY_SIZE(VCORE_VSEL_table),
346 .table = VCORE_VSEL_table,
347 },
348 {
349 .name = "LDO1",
350 .table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table),
351 .table = TPS65020_LDO1_VSEL_table,
352 },
353 {
354 .name = "LDO2",
355 .table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table),
356 .table = TPS65020_LDO2_VSEL_table,
357 },
358};
359
360static const struct tps_info tps65021_regs[] = {
361 {
362 .name = "VDCDC1",
363 .table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
364 .table = DCDC_FIXED_3300000_VSEL_table,
365 },
366 {
367 .name = "VDCDC2",
368 .table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
369 .table = DCDC_FIXED_1800000_VSEL_table,
370 },
371 {
372 .name = "VDCDC3",
373 .table_len = ARRAY_SIZE(VCORE_VSEL_table),
374 .table = VCORE_VSEL_table,
375 },
376 {
377 .name = "LDO1",
378 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
379 .table = TPS65023_LDO1_VSEL_table,
380 },
381 {
382 .name = "LDO2",
383 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
384 .table = TPS65023_LDO2_VSEL_table,
385 },
386};
387
388static const struct tps_info tps65023_regs[] = {
389 {
390 .name = "VDCDC1",
391 .table_len = ARRAY_SIZE(VCORE_VSEL_table),
392 .table = VCORE_VSEL_table,
393 },
394 {
395 .name = "VDCDC2",
396 .table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
397 .table = DCDC_FIXED_3300000_VSEL_table,
398 },
399 {
400 .name = "VDCDC3",
401 .table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
402 .table = DCDC_FIXED_1800000_VSEL_table,
403 },
404 {
405 .name = "LDO1",
406 .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
407 .table = TPS65023_LDO1_VSEL_table,
408 },
409 {
410 .name = "LDO2",
411 .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
412 .table = TPS65023_LDO2_VSEL_table,
413 },
414};
415
416static struct tps_driver_data tps65020_drv_data = {
417 .info = tps65020_regs,
418 .core_regulator = TPS65023_DCDC_3,
419};
420
421static struct tps_driver_data tps65021_drv_data = {
422 .info = tps65021_regs,
423 .core_regulator = TPS65023_DCDC_3,
424};
425
426static struct tps_driver_data tps65023_drv_data = {
427 .info = tps65023_regs,
428 .core_regulator = TPS65023_DCDC_1,
429};
430
431static const struct i2c_device_id tps_65023_id[] = {
432 {.name = "tps65023",
433 .driver_data = (unsigned long) &tps65023_drv_data},
434 {.name = "tps65021",
435 .driver_data = (unsigned long) &tps65021_drv_data,},
436 {.name = "tps65020",
437 .driver_data = (unsigned long) &tps65020_drv_data},
438 { },
439};
440
441MODULE_DEVICE_TABLE(i2c, tps_65023_id);
442
443static struct i2c_driver tps_65023_i2c_driver = {
444 .driver = {
445 .name = "tps65023",
446 .owner = THIS_MODULE,
447 },
448 .probe = tps_65023_probe,
449 .remove = tps_65023_remove,
450 .id_table = tps_65023_id,
451};
452
453static int __init tps_65023_init(void)
454{
455 return i2c_add_driver(&tps_65023_i2c_driver);
456}
457subsys_initcall(tps_65023_init);
458
459static void __exit tps_65023_cleanup(void)
460{
461 i2c_del_driver(&tps_65023_i2c_driver);
462}
463module_exit(tps_65023_cleanup);
464
465MODULE_AUTHOR("Texas Instruments");
466MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
467MODULE_LICENSE("GPL v2");
468
