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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/*
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/module.h>
18#include <linux/init.h>
19#include <linux/err.h>
20#include <linux/of.h>
21#include <linux/slab.h>
22#include <linux/platform_device.h>
23#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
25#include <linux/regulator/of_regulator.h>
26#include <linux/mfd/tps6586x.h>
27
28/* supply control and voltage setting */
29#define TPS6586X_SUPPLYENA 0x10
30#define TPS6586X_SUPPLYENB 0x11
31#define TPS6586X_SUPPLYENC 0x12
32#define TPS6586X_SUPPLYEND 0x13
33#define TPS6586X_SUPPLYENE 0x14
34#define TPS6586X_VCC1 0x20
35#define TPS6586X_VCC2 0x21
36#define TPS6586X_SM1V1 0x23
37#define TPS6586X_SM1V2 0x24
38#define TPS6586X_SM1SL 0x25
39#define TPS6586X_SM0V1 0x26
40#define TPS6586X_SM0V2 0x27
41#define TPS6586X_SM0SL 0x28
42#define TPS6586X_LDO2AV1 0x29
43#define TPS6586X_LDO2AV2 0x2A
44#define TPS6586X_LDO2BV1 0x2F
45#define TPS6586X_LDO2BV2 0x30
46#define TPS6586X_LDO4V1 0x32
47#define TPS6586X_LDO4V2 0x33
48
49/* converter settings */
50#define TPS6586X_SUPPLYV1 0x41
51#define TPS6586X_SUPPLYV2 0x42
52#define TPS6586X_SUPPLYV3 0x43
53#define TPS6586X_SUPPLYV4 0x44
54#define TPS6586X_SUPPLYV5 0x45
55#define TPS6586X_SUPPLYV6 0x46
56#define TPS6586X_SMODE1 0x47
57#define TPS6586X_SMODE2 0x48
58
59struct tps6586x_regulator {
60 struct regulator_desc desc;
61
62 int enable_bit[2];
63 int enable_reg[2];
64};
65
66static struct regulator_ops tps6586x_rw_regulator_ops = {
67 .list_voltage = regulator_list_voltage_table,
68 .map_voltage = regulator_map_voltage_ascend,
69 .get_voltage_sel = regulator_get_voltage_sel_regmap,
70 .set_voltage_sel = regulator_set_voltage_sel_regmap,
71
72 .is_enabled = regulator_is_enabled_regmap,
73 .enable = regulator_enable_regmap,
74 .disable = regulator_disable_regmap,
75};
76
77static struct regulator_ops tps6586x_rw_linear_regulator_ops = {
78 .list_voltage = regulator_list_voltage_linear,
79 .get_voltage_sel = regulator_get_voltage_sel_regmap,
80 .set_voltage_sel = regulator_set_voltage_sel_regmap,
81
82 .is_enabled = regulator_is_enabled_regmap,
83 .enable = regulator_enable_regmap,
84 .disable = regulator_disable_regmap,
85};
86
87static struct regulator_ops tps6586x_ro_regulator_ops = {
88 .list_voltage = regulator_list_voltage_table,
89 .map_voltage = regulator_map_voltage_ascend,
90 .get_voltage_sel = regulator_get_voltage_sel_regmap,
91
92 .is_enabled = regulator_is_enabled_regmap,
93 .enable = regulator_enable_regmap,
94 .disable = regulator_disable_regmap,
95};
96
97static struct regulator_ops tps6586x_sys_regulator_ops = {
98};
99
100static const unsigned int tps6586x_ldo0_voltages[] = {
101 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
102};
103
104static const unsigned int tps6586x_ldo_voltages[] = {
105 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
106};
107
108static const unsigned int tps658640_rtc_voltages[] = {
109 2500000, 2850000, 3100000, 3300000,
110};
111
112#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
113 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
114 .desc = { \
115 .supply_name = _pin_name, \
116 .name = "REG-" #_id, \
117 .ops = &tps6586x_## _ops ## _regulator_ops, \
118 .type = REGULATOR_VOLTAGE, \
119 .id = TPS6586X_ID_##_id, \
120 .n_voltages = ARRAY_SIZE(vdata##_voltages), \
121 .volt_table = vdata##_voltages, \
122 .owner = THIS_MODULE, \
123 .enable_reg = TPS6586X_SUPPLY##ereg0, \
124 .enable_mask = 1 << (ebit0), \
125 .vsel_reg = TPS6586X_##vreg, \
126 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
127 .apply_reg = (goreg), \
128 .apply_bit = (gobit), \
129 }, \
130 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
131 .enable_bit[0] = (ebit0), \
132 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
133 .enable_bit[1] = (ebit1),
134
135#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \
136 uv_step, vreg, shift, nbits, ereg0, \
137 ebit0, ereg1, ebit1, goreg, gobit) \
138 .desc = { \
139 .supply_name = _pin_name, \
140 .name = "REG-" #_id, \
141 .ops = &tps6586x_## _ops ## _regulator_ops, \
142 .type = REGULATOR_VOLTAGE, \
143 .id = TPS6586X_ID_##_id, \
144 .n_voltages = n_volt, \
145 .min_uV = min_uv, \
146 .uV_step = uv_step, \
147 .owner = THIS_MODULE, \
148 .enable_reg = TPS6586X_SUPPLY##ereg0, \
149 .enable_mask = 1 << (ebit0), \
150 .vsel_reg = TPS6586X_##vreg, \
151 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
152 .apply_reg = (goreg), \
153 .apply_bit = (gobit), \
154 }, \
155 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
156 .enable_bit[0] = (ebit0), \
157 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
158 .enable_bit[1] = (ebit1),
159
160#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
161 ereg0, ebit0, ereg1, ebit1) \
162{ \
163 TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \
164 ereg0, ebit0, ereg1, ebit1, 0, 0) \
165}
166
167#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \
168 shift, nbits, ereg0, ebit0, ereg1, ebit1) \
169{ \
170 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
171 min_uv, uv_step, vreg, shift, nbits, \
172 ereg0, ebit0, ereg1, ebit1, 0, 0) \
173}
174
175#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \
176 ereg0, ebit0, ereg1, ebit1) \
177{ \
178 TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \
179 ereg0, ebit0, ereg1, ebit1, 0, 0) \
180}
181
182#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \
183 nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
184{ \
185 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
186 min_uv, uv_step, vreg, shift, nbits, \
187 ereg0, ebit0, ereg1, ebit1, goreg, \
188 gobit) \
189}
190
191#define TPS6586X_SYS_REGULATOR() \
192{ \
193 .desc = { \
194 .supply_name = "sys", \
195 .name = "REG-SYS", \
196 .ops = &tps6586x_sys_regulator_ops, \
197 .type = REGULATOR_VOLTAGE, \
198 .id = TPS6586X_ID_SYS, \
199 .owner = THIS_MODULE, \
200 }, \
201}
202
203static struct tps6586x_regulator tps6586x_regulator[] = {
204 TPS6586X_SYS_REGULATOR(),
205 TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
206 END, 0),
207 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
208 END, 2),
209 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
210 ENE, 6),
211 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
212 END, 4),
213 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
214 END, 5),
215 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
216 END, 6),
217 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
218 ENE, 7),
219 TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
220 V4, 7),
221 TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
222 0, 5, ENC, 1, END, 1),
223 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
224 0, 5, ENC, 7, END, 7),
225 TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
226 ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
227 TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
228 ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
229 TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
230 ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
231 TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
232 ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
233};
234
235static struct tps6586x_regulator tps658623_regulator[] = {
236 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
237 0, 5, ENC, 7, END, 7),
238};
239
240static struct tps6586x_regulator tps658640_regulator[] = {
241 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
242 ENC, 2, END, 2),
243 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
244 ENE, 6, ENE, 6),
245 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
246 ENC, 4, END, 4),
247 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
248 ENC, 5, END, 5),
249 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
250 ENC, 6, END, 6),
251 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
252 ENE, 7, ENE, 7),
253 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
254 0, 5, ENC, 7, END, 7),
255
256 TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
257 V4, 7, V4, 7),
258};
259
260static struct tps6586x_regulator tps658643_regulator[] = {
261 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
262 0, 5, ENC, 7, END, 7),
263};
264
265/*
266 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
267 * regulator state. Clearing one of this bits allows switching
268 * regulator on and of with single register write.
269 */
270static inline int tps6586x_regulator_preinit(struct device *parent,
271 struct tps6586x_regulator *ri)
272{
273 uint8_t val1, val2;
274 int ret;
275
276 if (ri->enable_reg[0] == ri->enable_reg[1] &&
277 ri->enable_bit[0] == ri->enable_bit[1])
278 return 0;
279
280 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
281 if (ret)
282 return ret;
283
284 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
285 if (ret)
286 return ret;
287
288 if (!(val2 & (1 << ri->enable_bit[1])))
289 return 0;
290
291 /*
292 * The regulator is on, but it's enabled with the bit we don't
293 * want to use, so we switch the enable bits
294 */
295 if (!(val1 & (1 << ri->enable_bit[0]))) {
296 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
297 1 << ri->enable_bit[0]);
298 if (ret)
299 return ret;
300 }
301
302 return tps6586x_clr_bits(parent, ri->enable_reg[1],
303 1 << ri->enable_bit[1]);
304}
305
306static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
307 int id, struct regulator_init_data *p)
308{
309 struct device *parent = pdev->dev.parent;
310 struct tps6586x_settings *setting = p->driver_data;
311 uint8_t reg;
312
313 if (setting == NULL)
314 return 0;
315
316 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
317 return 0;
318
319 /* only SM0 and SM1 can have the slew rate settings */
320 switch (id) {
321 case TPS6586X_ID_SM_0:
322 reg = TPS6586X_SM0SL;
323 break;
324 case TPS6586X_ID_SM_1:
325 reg = TPS6586X_SM1SL;
326 break;
327 default:
328 dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
329 return -EINVAL;
330 }
331
332 return tps6586x_write(parent, reg,
333 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
334}
335
336static struct tps6586x_regulator *find_regulator_info(int id, int version)
337{
338 struct tps6586x_regulator *ri;
339 struct tps6586x_regulator *table = NULL;
340 int num;
341 int i;
342
343 switch (version) {
344 case TPS658623:
345 table = tps658623_regulator;
346 num = ARRAY_SIZE(tps658623_regulator);
347 break;
348 case TPS658640:
349 case TPS658640v2:
350 table = tps658640_regulator;
351 num = ARRAY_SIZE(tps658640_regulator);
352 break;
353 case TPS658643:
354 table = tps658643_regulator;
355 num = ARRAY_SIZE(tps658643_regulator);
356 break;
357 }
358
359 /* Search version specific table first */
360 if (table) {
361 for (i = 0; i < num; i++) {
362 ri = &table[i];
363 if (ri->desc.id == id)
364 return ri;
365 }
366 }
367
368 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
369 ri = &tps6586x_regulator[i];
370 if (ri->desc.id == id)
371 return ri;
372 }
373 return NULL;
374}
375
376#ifdef CONFIG_OF
377static struct of_regulator_match tps6586x_matches[] = {
378 { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
379 { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
380 { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
381 { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
382 { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
383 { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
384 { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
385 { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
386 { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
387 { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
388 { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
389 { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
390 { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
391 { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
392 { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
393};
394
395static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
396 struct platform_device *pdev,
397 struct of_regulator_match **tps6586x_reg_matches)
398{
399 const unsigned int num = ARRAY_SIZE(tps6586x_matches);
400 struct device_node *np = pdev->dev.parent->of_node;
401 struct device_node *regs;
402 const char *sys_rail = NULL;
403 unsigned int i;
404 struct tps6586x_platform_data *pdata;
405 int err;
406
407 regs = of_get_child_by_name(np, "regulators");
408 if (!regs) {
409 dev_err(&pdev->dev, "regulator node not found\n");
410 return NULL;
411 }
412
413 err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
414 of_node_put(regs);
415 if (err < 0) {
416 dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
417 return NULL;
418 }
419
420 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
421 if (!pdata)
422 return NULL;
423
424 for (i = 0; i < num; i++) {
425 uintptr_t id;
426 if (!tps6586x_matches[i].init_data)
427 continue;
428
429 pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
430 id = (uintptr_t)tps6586x_matches[i].driver_data;
431 if (id == TPS6586X_ID_SYS)
432 sys_rail = pdata->reg_init_data[i]->constraints.name;
433
434 if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
435 pdata->reg_init_data[i]->supply_regulator = sys_rail;
436 }
437 *tps6586x_reg_matches = tps6586x_matches;
438 return pdata;
439}
440#else
441static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
442 struct platform_device *pdev,
443 struct of_regulator_match **tps6586x_reg_matches)
444{
445 *tps6586x_reg_matches = NULL;
446 return NULL;
447}
448#endif
449
450static int tps6586x_regulator_probe(struct platform_device *pdev)
451{
452 struct tps6586x_regulator *ri = NULL;
453 struct regulator_config config = { };
454 struct regulator_dev *rdev;
455 struct regulator_init_data *reg_data;
456 struct tps6586x_platform_data *pdata;
457 struct of_regulator_match *tps6586x_reg_matches = NULL;
458 int version;
459 int id;
460 int err;
461
462 dev_dbg(&pdev->dev, "Probing regulator\n");
463
464 pdata = dev_get_platdata(pdev->dev.parent);
465 if ((!pdata) && (pdev->dev.parent->of_node))
466 pdata = tps6586x_parse_regulator_dt(pdev,
467 &tps6586x_reg_matches);
468
469 if (!pdata) {
470 dev_err(&pdev->dev, "Platform data not available, exiting\n");
471 return -ENODEV;
472 }
473
474 version = tps6586x_get_version(pdev->dev.parent);
475
476 for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
477 reg_data = pdata->reg_init_data[id];
478
479 ri = find_regulator_info(id, version);
480
481 if (!ri) {
482 dev_err(&pdev->dev, "invalid regulator ID specified\n");
483 return -EINVAL;
484 }
485
486 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
487 if (err) {
488 dev_err(&pdev->dev,
489 "regulator %d preinit failed, e %d\n", id, err);
490 return err;
491 }
492
493 config.dev = pdev->dev.parent;
494 config.init_data = reg_data;
495 config.driver_data = ri;
496
497 if (tps6586x_reg_matches)
498 config.of_node = tps6586x_reg_matches[id].of_node;
499
500 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
501 if (IS_ERR(rdev)) {
502 dev_err(&pdev->dev, "failed to register regulator %s\n",
503 ri->desc.name);
504 return PTR_ERR(rdev);
505 }
506
507 if (reg_data) {
508 err = tps6586x_regulator_set_slew_rate(pdev, id,
509 reg_data);
510 if (err < 0) {
511 dev_err(&pdev->dev,
512 "Slew rate config failed, e %d\n", err);
513 return err;
514 }
515 }
516 }
517
518 platform_set_drvdata(pdev, rdev);
519 return 0;
520}
521
522static struct platform_driver tps6586x_regulator_driver = {
523 .driver = {
524 .name = "tps6586x-regulator",
525 },
526 .probe = tps6586x_regulator_probe,
527};
528
529static int __init tps6586x_regulator_init(void)
530{
531 return platform_driver_register(&tps6586x_regulator_driver);
532}
533subsys_initcall(tps6586x_regulator_init);
534
535static void __exit tps6586x_regulator_exit(void)
536{
537 platform_driver_unregister(&tps6586x_regulator_driver);
538}
539module_exit(tps6586x_regulator_exit);
540
541MODULE_LICENSE("GPL");
542MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
543MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
544MODULE_ALIAS("platform:tps6586x-regulator");