Loading...
1/*
2 * Regulator driver for TI TPS6586x
3 *
4 * Copyright (C) 2010 Compulab Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on da903x
8 * Copyright (C) 2006-2008 Marvell International Ltd.
9 * Copyright (C) 2008 Compulab Ltd.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/err.h>
19#include <linux/slab.h>
20#include <linux/platform_device.h>
21#include <linux/regulator/driver.h>
22#include <linux/regulator/machine.h>
23#include <linux/mfd/tps6586x.h>
24
25/* supply control and voltage setting */
26#define TPS6586X_SUPPLYENA 0x10
27#define TPS6586X_SUPPLYENB 0x11
28#define TPS6586X_SUPPLYENC 0x12
29#define TPS6586X_SUPPLYEND 0x13
30#define TPS6586X_SUPPLYENE 0x14
31#define TPS6586X_VCC1 0x20
32#define TPS6586X_VCC2 0x21
33#define TPS6586X_SM1V1 0x23
34#define TPS6586X_SM1V2 0x24
35#define TPS6586X_SM1SL 0x25
36#define TPS6586X_SM0V1 0x26
37#define TPS6586X_SM0V2 0x27
38#define TPS6586X_SM0SL 0x28
39#define TPS6586X_LDO2AV1 0x29
40#define TPS6586X_LDO2AV2 0x2A
41#define TPS6586X_LDO2BV1 0x2F
42#define TPS6586X_LDO2BV2 0x30
43#define TPS6586X_LDO4V1 0x32
44#define TPS6586X_LDO4V2 0x33
45
46/* converter settings */
47#define TPS6586X_SUPPLYV1 0x41
48#define TPS6586X_SUPPLYV2 0x42
49#define TPS6586X_SUPPLYV3 0x43
50#define TPS6586X_SUPPLYV4 0x44
51#define TPS6586X_SUPPLYV5 0x45
52#define TPS6586X_SUPPLYV6 0x46
53#define TPS6586X_SMODE1 0x47
54#define TPS6586X_SMODE2 0x48
55
56struct tps6586x_regulator {
57 struct regulator_desc desc;
58
59 int volt_reg;
60 int volt_shift;
61 int volt_nbits;
62 int enable_bit[2];
63 int enable_reg[2];
64
65 int *voltages;
66
67 /* for DVM regulators */
68 int go_reg;
69 int go_bit;
70};
71
72static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
73{
74 return rdev_get_dev(rdev)->parent->parent;
75}
76
77static int tps6586x_ldo_list_voltage(struct regulator_dev *rdev,
78 unsigned selector)
79{
80 struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
81
82 return info->voltages[selector] * 1000;
83}
84
85
86static int __tps6586x_ldo_set_voltage(struct device *parent,
87 struct tps6586x_regulator *ri,
88 int min_uV, int max_uV,
89 unsigned *selector)
90{
91 int val, uV;
92 uint8_t mask;
93
94 for (val = 0; val < ri->desc.n_voltages; val++) {
95 uV = ri->voltages[val] * 1000;
96
97 /* LDO0 has minimal voltage 1.2 rather than 1.25 */
98 if (ri->desc.id == TPS6586X_ID_LDO_0 && val == 0)
99 uV -= 50 * 1000;
100
101 /* use the first in-range value */
102 if (min_uV <= uV && uV <= max_uV) {
103
104 *selector = val;
105
106 val <<= ri->volt_shift;
107 mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
108
109 return tps6586x_update(parent, ri->volt_reg, val, mask);
110 }
111 }
112
113 return -EINVAL;
114}
115
116static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev,
117 int min_uV, int max_uV, unsigned *selector)
118{
119 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
120 struct device *parent = to_tps6586x_dev(rdev);
121
122 return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV,
123 selector);
124}
125
126static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev)
127{
128 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
129 struct device *parent = to_tps6586x_dev(rdev);
130 uint8_t val, mask;
131 int ret;
132
133 ret = tps6586x_read(parent, ri->volt_reg, &val);
134 if (ret)
135 return ret;
136
137 mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
138 val = (val & mask) >> ri->volt_shift;
139
140 if (val >= ri->desc.n_voltages)
141 BUG();
142
143 return ri->voltages[val] * 1000;
144}
145
146static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev,
147 int min_uV, int max_uV, unsigned *selector)
148{
149 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
150 struct device *parent = to_tps6586x_dev(rdev);
151 int ret;
152
153 ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV,
154 selector);
155 if (ret)
156 return ret;
157
158 return tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
159}
160
161static int tps6586x_regulator_enable(struct regulator_dev *rdev)
162{
163 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
164 struct device *parent = to_tps6586x_dev(rdev);
165
166 return tps6586x_set_bits(parent, ri->enable_reg[0],
167 1 << ri->enable_bit[0]);
168}
169
170static int tps6586x_regulator_disable(struct regulator_dev *rdev)
171{
172 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
173 struct device *parent = to_tps6586x_dev(rdev);
174
175 return tps6586x_clr_bits(parent, ri->enable_reg[0],
176 1 << ri->enable_bit[0]);
177}
178
179static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
180{
181 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
182 struct device *parent = to_tps6586x_dev(rdev);
183 uint8_t reg_val;
184 int ret;
185
186 ret = tps6586x_read(parent, ri->enable_reg[0], ®_val);
187 if (ret)
188 return ret;
189
190 return !!(reg_val & (1 << ri->enable_bit[0]));
191}
192
193static struct regulator_ops tps6586x_regulator_ldo_ops = {
194 .list_voltage = tps6586x_ldo_list_voltage,
195 .get_voltage = tps6586x_ldo_get_voltage,
196 .set_voltage = tps6586x_ldo_set_voltage,
197
198 .is_enabled = tps6586x_regulator_is_enabled,
199 .enable = tps6586x_regulator_enable,
200 .disable = tps6586x_regulator_disable,
201};
202
203static struct regulator_ops tps6586x_regulator_dvm_ops = {
204 .list_voltage = tps6586x_ldo_list_voltage,
205 .get_voltage = tps6586x_ldo_get_voltage,
206 .set_voltage = tps6586x_dvm_set_voltage,
207
208 .is_enabled = tps6586x_regulator_is_enabled,
209 .enable = tps6586x_regulator_enable,
210 .disable = tps6586x_regulator_disable,
211};
212
213static int tps6586x_ldo_voltages[] = {
214 1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
215};
216
217static int tps6586x_ldo4_voltages[] = {
218 1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
219 1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
220 2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
221 2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
222};
223
224static int tps6586x_sm2_voltages[] = {
225 3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
226 3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
227 3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
228 4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
229};
230
231static int tps6586x_dvm_voltages[] = {
232 725, 750, 775, 800, 825, 850, 875, 900,
233 925, 950, 975, 1000, 1025, 1050, 1075, 1100,
234 1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
235 1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
236};
237
238#define TPS6586X_REGULATOR(_id, vdata, _ops, vreg, shift, nbits, \
239 ereg0, ebit0, ereg1, ebit1) \
240 .desc = { \
241 .name = "REG-" #_id, \
242 .ops = &tps6586x_regulator_##_ops, \
243 .type = REGULATOR_VOLTAGE, \
244 .id = TPS6586X_ID_##_id, \
245 .n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
246 .owner = THIS_MODULE, \
247 }, \
248 .volt_reg = TPS6586X_##vreg, \
249 .volt_shift = (shift), \
250 .volt_nbits = (nbits), \
251 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
252 .enable_bit[0] = (ebit0), \
253 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
254 .enable_bit[1] = (ebit1), \
255 .voltages = tps6586x_##vdata##_voltages,
256
257#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
258 .go_reg = TPS6586X_##goreg, \
259 .go_bit = (gobit),
260
261#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
262 ereg0, ebit0, ereg1, ebit1) \
263{ \
264 TPS6586X_REGULATOR(_id, vdata, ldo_ops, vreg, shift, nbits, \
265 ereg0, ebit0, ereg1, ebit1) \
266}
267
268#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
269 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
270{ \
271 TPS6586X_REGULATOR(_id, vdata, dvm_ops, vreg, shift, nbits, \
272 ereg0, ebit0, ereg1, ebit1) \
273 TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
274}
275
276static struct tps6586x_regulator tps6586x_regulator[] = {
277 TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
278 TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
279 TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
280 TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
281 TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
282 TPS6586X_LDO(LDO_8, ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
283 TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
284 TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
285 TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
286 TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
287
288 TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
289 TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
290 TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
291 TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
292};
293
294/*
295 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
296 * regulator state. Clearing one of this bits allows switching
297 * regulator on and of with single register write.
298 */
299static inline int tps6586x_regulator_preinit(struct device *parent,
300 struct tps6586x_regulator *ri)
301{
302 uint8_t val1, val2;
303 int ret;
304
305 if (ri->enable_reg[0] == ri->enable_reg[1] &&
306 ri->enable_bit[0] == ri->enable_bit[1])
307 return 0;
308
309 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
310 if (ret)
311 return ret;
312
313 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
314 if (ret)
315 return ret;
316
317 if (!(val2 & (1 << ri->enable_bit[1])))
318 return 0;
319
320 /*
321 * The regulator is on, but it's enabled with the bit we don't
322 * want to use, so we switch the enable bits
323 */
324 if (!(val1 & (1 << ri->enable_bit[0]))) {
325 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
326 1 << ri->enable_bit[0]);
327 if (ret)
328 return ret;
329 }
330
331 return tps6586x_clr_bits(parent, ri->enable_reg[1],
332 1 << ri->enable_bit[1]);
333}
334
335static inline struct tps6586x_regulator *find_regulator_info(int id)
336{
337 struct tps6586x_regulator *ri;
338 int i;
339
340 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
341 ri = &tps6586x_regulator[i];
342 if (ri->desc.id == id)
343 return ri;
344 }
345 return NULL;
346}
347
348static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
349{
350 struct tps6586x_regulator *ri = NULL;
351 struct regulator_dev *rdev;
352 int id = pdev->id;
353 int err;
354
355 dev_dbg(&pdev->dev, "Probing reulator %d\n", id);
356
357 ri = find_regulator_info(id);
358 if (ri == NULL) {
359 dev_err(&pdev->dev, "invalid regulator ID specified\n");
360 return -EINVAL;
361 }
362
363 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
364 if (err)
365 return err;
366
367 rdev = regulator_register(&ri->desc, &pdev->dev,
368 pdev->dev.platform_data, ri);
369 if (IS_ERR(rdev)) {
370 dev_err(&pdev->dev, "failed to register regulator %s\n",
371 ri->desc.name);
372 return PTR_ERR(rdev);
373 }
374
375 platform_set_drvdata(pdev, rdev);
376
377 return 0;
378}
379
380static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
381{
382 struct regulator_dev *rdev = platform_get_drvdata(pdev);
383
384 regulator_unregister(rdev);
385 return 0;
386}
387
388static struct platform_driver tps6586x_regulator_driver = {
389 .driver = {
390 .name = "tps6586x-regulator",
391 .owner = THIS_MODULE,
392 },
393 .probe = tps6586x_regulator_probe,
394 .remove = __devexit_p(tps6586x_regulator_remove),
395};
396
397static int __init tps6586x_regulator_init(void)
398{
399 return platform_driver_register(&tps6586x_regulator_driver);
400}
401subsys_initcall(tps6586x_regulator_init);
402
403static void __exit tps6586x_regulator_exit(void)
404{
405 platform_driver_unregister(&tps6586x_regulator_driver);
406}
407module_exit(tps6586x_regulator_exit);
408
409MODULE_LICENSE("GPL");
410MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
411MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
412MODULE_ALIAS("platform:tps6586x-regulator");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Regulator driver for TI TPS6586x
4 *
5 * Copyright (C) 2010 Compulab Ltd.
6 * Author: Mike Rapoport <mike@compulab.co.il>
7 *
8 * Based on da903x
9 * Copyright (C) 2006-2008 Marvell International Ltd.
10 * Copyright (C) 2008 Compulab Ltd.
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/err.h>
17#include <linux/of.h>
18#include <linux/slab.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/regulator/of_regulator.h>
23#include <linux/mfd/tps6586x.h>
24
25/* supply control and voltage setting */
26#define TPS6586X_SUPPLYENA 0x10
27#define TPS6586X_SUPPLYENB 0x11
28#define TPS6586X_SUPPLYENC 0x12
29#define TPS6586X_SUPPLYEND 0x13
30#define TPS6586X_SUPPLYENE 0x14
31#define TPS6586X_VCC1 0x20
32#define TPS6586X_VCC2 0x21
33#define TPS6586X_SM1V1 0x23
34#define TPS6586X_SM1V2 0x24
35#define TPS6586X_SM1SL 0x25
36#define TPS6586X_SM0V1 0x26
37#define TPS6586X_SM0V2 0x27
38#define TPS6586X_SM0SL 0x28
39#define TPS6586X_LDO2AV1 0x29
40#define TPS6586X_LDO2AV2 0x2A
41#define TPS6586X_LDO2BV1 0x2F
42#define TPS6586X_LDO2BV2 0x30
43#define TPS6586X_LDO4V1 0x32
44#define TPS6586X_LDO4V2 0x33
45
46/* converter settings */
47#define TPS6586X_SUPPLYV1 0x41
48#define TPS6586X_SUPPLYV2 0x42
49#define TPS6586X_SUPPLYV3 0x43
50#define TPS6586X_SUPPLYV4 0x44
51#define TPS6586X_SUPPLYV5 0x45
52#define TPS6586X_SUPPLYV6 0x46
53#define TPS6586X_SMODE1 0x47
54#define TPS6586X_SMODE2 0x48
55
56struct tps6586x_regulator {
57 struct regulator_desc desc;
58
59 int enable_bit[2];
60 int enable_reg[2];
61};
62
63static const struct regulator_ops tps6586x_rw_regulator_ops = {
64 .list_voltage = regulator_list_voltage_table,
65 .map_voltage = regulator_map_voltage_ascend,
66 .get_voltage_sel = regulator_get_voltage_sel_regmap,
67 .set_voltage_sel = regulator_set_voltage_sel_regmap,
68
69 .is_enabled = regulator_is_enabled_regmap,
70 .enable = regulator_enable_regmap,
71 .disable = regulator_disable_regmap,
72};
73
74static const struct regulator_ops tps6586x_rw_linear_regulator_ops = {
75 .list_voltage = regulator_list_voltage_linear,
76 .get_voltage_sel = regulator_get_voltage_sel_regmap,
77 .set_voltage_sel = regulator_set_voltage_sel_regmap,
78
79 .is_enabled = regulator_is_enabled_regmap,
80 .enable = regulator_enable_regmap,
81 .disable = regulator_disable_regmap,
82};
83
84static const struct regulator_ops tps6586x_ro_regulator_ops = {
85 .list_voltage = regulator_list_voltage_table,
86 .map_voltage = regulator_map_voltage_ascend,
87 .get_voltage_sel = regulator_get_voltage_sel_regmap,
88
89 .is_enabled = regulator_is_enabled_regmap,
90 .enable = regulator_enable_regmap,
91 .disable = regulator_disable_regmap,
92};
93
94static const struct regulator_ops tps6586x_sys_regulator_ops = {
95};
96
97static const unsigned int tps6586x_ldo0_voltages[] = {
98 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
99};
100
101static const unsigned int tps6586x_ldo_voltages[] = {
102 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
103};
104
105static const unsigned int tps658640_rtc_voltages[] = {
106 2500000, 2850000, 3100000, 3300000,
107};
108
109#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
110 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
111 .desc = { \
112 .supply_name = _pin_name, \
113 .name = "REG-" #_id, \
114 .ops = &tps6586x_## _ops ## _regulator_ops, \
115 .type = REGULATOR_VOLTAGE, \
116 .id = TPS6586X_ID_##_id, \
117 .n_voltages = ARRAY_SIZE(vdata##_voltages), \
118 .volt_table = vdata##_voltages, \
119 .owner = THIS_MODULE, \
120 .enable_reg = TPS6586X_SUPPLY##ereg0, \
121 .enable_mask = 1 << (ebit0), \
122 .vsel_reg = TPS6586X_##vreg, \
123 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
124 .apply_reg = (goreg), \
125 .apply_bit = (gobit), \
126 }, \
127 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
128 .enable_bit[0] = (ebit0), \
129 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
130 .enable_bit[1] = (ebit1),
131
132#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \
133 uv_step, vreg, shift, nbits, ereg0, \
134 ebit0, ereg1, ebit1, goreg, gobit) \
135 .desc = { \
136 .supply_name = _pin_name, \
137 .name = "REG-" #_id, \
138 .ops = &tps6586x_## _ops ## _regulator_ops, \
139 .type = REGULATOR_VOLTAGE, \
140 .id = TPS6586X_ID_##_id, \
141 .n_voltages = n_volt, \
142 .min_uV = min_uv, \
143 .uV_step = uv_step, \
144 .owner = THIS_MODULE, \
145 .enable_reg = TPS6586X_SUPPLY##ereg0, \
146 .enable_mask = 1 << (ebit0), \
147 .vsel_reg = TPS6586X_##vreg, \
148 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
149 .apply_reg = (goreg), \
150 .apply_bit = (gobit), \
151 }, \
152 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
153 .enable_bit[0] = (ebit0), \
154 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
155 .enable_bit[1] = (ebit1),
156
157#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
158 ereg0, ebit0, ereg1, ebit1) \
159{ \
160 TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \
161 ereg0, ebit0, ereg1, ebit1, 0, 0) \
162}
163
164#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \
165 shift, nbits, ereg0, ebit0, ereg1, ebit1) \
166{ \
167 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
168 min_uv, uv_step, vreg, shift, nbits, \
169 ereg0, ebit0, ereg1, ebit1, 0, 0) \
170}
171
172#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \
173 ereg0, ebit0, ereg1, ebit1) \
174{ \
175 TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \
176 ereg0, ebit0, ereg1, ebit1, 0, 0) \
177}
178
179#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \
180 nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
181{ \
182 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
183 min_uv, uv_step, vreg, shift, nbits, \
184 ereg0, ebit0, ereg1, ebit1, goreg, \
185 gobit) \
186}
187
188#define TPS6586X_SYS_REGULATOR() \
189{ \
190 .desc = { \
191 .supply_name = "sys", \
192 .name = "REG-SYS", \
193 .ops = &tps6586x_sys_regulator_ops, \
194 .type = REGULATOR_VOLTAGE, \
195 .id = TPS6586X_ID_SYS, \
196 .owner = THIS_MODULE, \
197 }, \
198}
199
200static struct tps6586x_regulator tps6586x_regulator[] = {
201 TPS6586X_SYS_REGULATOR(),
202 TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
203 END, 0),
204 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
205 END, 2),
206 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
207 ENE, 6),
208 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
209 END, 4),
210 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
211 END, 5),
212 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
213 END, 6),
214 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
215 ENE, 7),
216 TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
217 V4, 7),
218 TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
219 0, 5, ENC, 1, END, 1),
220 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
221 0, 5, ENC, 7, END, 7),
222 TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
223 ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
224 TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
225 ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
226 TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
227 ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
228 TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
229 ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
230};
231
232static struct tps6586x_regulator tps658623_regulator[] = {
233 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
234 0, 5, ENC, 7, END, 7),
235};
236
237static struct tps6586x_regulator tps658640_regulator[] = {
238 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
239 ENC, 2, END, 2),
240 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
241 ENE, 6, ENE, 6),
242 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
243 ENC, 4, END, 4),
244 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
245 ENC, 5, END, 5),
246 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
247 ENC, 6, END, 6),
248 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
249 ENE, 7, ENE, 7),
250 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
251 0, 5, ENC, 7, END, 7),
252
253 TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
254 V4, 7, V4, 7),
255};
256
257static struct tps6586x_regulator tps658643_regulator[] = {
258 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
259 0, 5, ENC, 7, END, 7),
260};
261
262/*
263 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
264 * regulator state. Clearing one of this bits allows switching
265 * regulator on and of with single register write.
266 */
267static inline int tps6586x_regulator_preinit(struct device *parent,
268 struct tps6586x_regulator *ri)
269{
270 uint8_t val1, val2;
271 int ret;
272
273 if (ri->enable_reg[0] == ri->enable_reg[1] &&
274 ri->enable_bit[0] == ri->enable_bit[1])
275 return 0;
276
277 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
278 if (ret)
279 return ret;
280
281 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
282 if (ret)
283 return ret;
284
285 if (!(val2 & (1 << ri->enable_bit[1])))
286 return 0;
287
288 /*
289 * The regulator is on, but it's enabled with the bit we don't
290 * want to use, so we switch the enable bits
291 */
292 if (!(val1 & (1 << ri->enable_bit[0]))) {
293 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
294 1 << ri->enable_bit[0]);
295 if (ret)
296 return ret;
297 }
298
299 return tps6586x_clr_bits(parent, ri->enable_reg[1],
300 1 << ri->enable_bit[1]);
301}
302
303static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
304 int id, struct regulator_init_data *p)
305{
306 struct device *parent = pdev->dev.parent;
307 struct tps6586x_settings *setting = p->driver_data;
308 uint8_t reg;
309
310 if (setting == NULL)
311 return 0;
312
313 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
314 return 0;
315
316 /* only SM0 and SM1 can have the slew rate settings */
317 switch (id) {
318 case TPS6586X_ID_SM_0:
319 reg = TPS6586X_SM0SL;
320 break;
321 case TPS6586X_ID_SM_1:
322 reg = TPS6586X_SM1SL;
323 break;
324 default:
325 dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
326 return -EINVAL;
327 }
328
329 return tps6586x_write(parent, reg,
330 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
331}
332
333static struct tps6586x_regulator *find_regulator_info(int id, int version)
334{
335 struct tps6586x_regulator *ri;
336 struct tps6586x_regulator *table = NULL;
337 int num;
338 int i;
339
340 switch (version) {
341 case TPS658623:
342 case TPS658624:
343 table = tps658623_regulator;
344 num = ARRAY_SIZE(tps658623_regulator);
345 break;
346 case TPS658640:
347 case TPS658640v2:
348 table = tps658640_regulator;
349 num = ARRAY_SIZE(tps658640_regulator);
350 break;
351 case TPS658643:
352 table = tps658643_regulator;
353 num = ARRAY_SIZE(tps658643_regulator);
354 break;
355 }
356
357 /* Search version specific table first */
358 if (table) {
359 for (i = 0; i < num; i++) {
360 ri = &table[i];
361 if (ri->desc.id == id)
362 return ri;
363 }
364 }
365
366 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
367 ri = &tps6586x_regulator[i];
368 if (ri->desc.id == id)
369 return ri;
370 }
371 return NULL;
372}
373
374#ifdef CONFIG_OF
375static struct of_regulator_match tps6586x_matches[] = {
376 { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
377 { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
378 { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
379 { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
380 { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
381 { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
382 { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
383 { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
384 { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
385 { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
386 { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
387 { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
388 { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
389 { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
390 { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
391};
392
393static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
394 struct platform_device *pdev,
395 struct of_regulator_match **tps6586x_reg_matches)
396{
397 const unsigned int num = ARRAY_SIZE(tps6586x_matches);
398 struct device_node *np = pdev->dev.parent->of_node;
399 struct device_node *regs;
400 const char *sys_rail = NULL;
401 unsigned int i;
402 struct tps6586x_platform_data *pdata;
403 int err;
404
405 regs = of_get_child_by_name(np, "regulators");
406 if (!regs) {
407 dev_err(&pdev->dev, "regulator node not found\n");
408 return NULL;
409 }
410
411 err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
412 of_node_put(regs);
413 if (err < 0) {
414 dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
415 return NULL;
416 }
417
418 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
419 if (!pdata)
420 return NULL;
421
422 for (i = 0; i < num; i++) {
423 uintptr_t id;
424 if (!tps6586x_matches[i].init_data)
425 continue;
426
427 pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
428 id = (uintptr_t)tps6586x_matches[i].driver_data;
429 if (id == TPS6586X_ID_SYS)
430 sys_rail = pdata->reg_init_data[i]->constraints.name;
431
432 if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
433 pdata->reg_init_data[i]->supply_regulator = sys_rail;
434 }
435 *tps6586x_reg_matches = tps6586x_matches;
436 return pdata;
437}
438#else
439static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
440 struct platform_device *pdev,
441 struct of_regulator_match **tps6586x_reg_matches)
442{
443 *tps6586x_reg_matches = NULL;
444 return NULL;
445}
446#endif
447
448static int tps6586x_regulator_probe(struct platform_device *pdev)
449{
450 struct tps6586x_regulator *ri = NULL;
451 struct regulator_config config = { };
452 struct regulator_dev *rdev;
453 struct regulator_init_data *reg_data;
454 struct tps6586x_platform_data *pdata;
455 struct of_regulator_match *tps6586x_reg_matches = NULL;
456 int version;
457 int id;
458 int err;
459
460 dev_dbg(&pdev->dev, "Probing regulator\n");
461
462 pdata = dev_get_platdata(pdev->dev.parent);
463 if ((!pdata) && (pdev->dev.parent->of_node))
464 pdata = tps6586x_parse_regulator_dt(pdev,
465 &tps6586x_reg_matches);
466
467 if (!pdata) {
468 dev_err(&pdev->dev, "Platform data not available, exiting\n");
469 return -ENODEV;
470 }
471
472 version = tps6586x_get_version(pdev->dev.parent);
473
474 for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
475 reg_data = pdata->reg_init_data[id];
476
477 ri = find_regulator_info(id, version);
478
479 if (!ri) {
480 dev_err(&pdev->dev, "invalid regulator ID specified\n");
481 return -EINVAL;
482 }
483
484 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
485 if (err) {
486 dev_err(&pdev->dev,
487 "regulator %d preinit failed, e %d\n", id, err);
488 return err;
489 }
490
491 config.dev = pdev->dev.parent;
492 config.init_data = reg_data;
493 config.driver_data = ri;
494
495 if (tps6586x_reg_matches)
496 config.of_node = tps6586x_reg_matches[id].of_node;
497
498 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
499 if (IS_ERR(rdev)) {
500 dev_err(&pdev->dev, "failed to register regulator %s\n",
501 ri->desc.name);
502 return PTR_ERR(rdev);
503 }
504
505 if (reg_data) {
506 err = tps6586x_regulator_set_slew_rate(pdev, id,
507 reg_data);
508 if (err < 0) {
509 dev_err(&pdev->dev,
510 "Slew rate config failed, e %d\n", err);
511 return err;
512 }
513 }
514 }
515
516 platform_set_drvdata(pdev, rdev);
517 return 0;
518}
519
520static struct platform_driver tps6586x_regulator_driver = {
521 .driver = {
522 .name = "tps6586x-regulator",
523 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
524 },
525 .probe = tps6586x_regulator_probe,
526};
527
528static int __init tps6586x_regulator_init(void)
529{
530 return platform_driver_register(&tps6586x_regulator_driver);
531}
532subsys_initcall(tps6586x_regulator_init);
533
534static void __exit tps6586x_regulator_exit(void)
535{
536 platform_driver_unregister(&tps6586x_regulator_driver);
537}
538module_exit(tps6586x_regulator_exit);
539
540MODULE_LICENSE("GPL");
541MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
542MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
543MODULE_ALIAS("platform:tps6586x-regulator");