1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Regulator driver for tps6594 PMIC
4 //
5 // Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
6
7 #include <linux/device.h>
8 #include <linux/err.h>
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13 #include <linux/platform_device.h>
14 #include <linux/regmap.h>
15 #include <linux/regulator/driver.h>
16 #include <linux/regulator/machine.h>
17 #include <linux/regulator/of_regulator.h>
18
19 #include <linux/mfd/tps6594.h>
20
21 #define BUCK_NB 5
22 #define LDO_NB 4
23 #define MULTI_PHASE_NB 4
24 /* TPS6593 and LP8764 supports OV, UV, SC, ILIM */
25 #define REGS_INT_NB 4
26 /* TPS65224 supports OV or UV */
27 #define TPS65224_REGS_INT_NB 1
28
29 enum tps6594_regulator_id {
30 /* DCDC's */
31 TPS6594_BUCK_1,
32 TPS6594_BUCK_2,
33 TPS6594_BUCK_3,
34 TPS6594_BUCK_4,
35 TPS6594_BUCK_5,
36
37 /* LDOs */
38 TPS6594_LDO_1,
39 TPS6594_LDO_2,
40 TPS6594_LDO_3,
41 TPS6594_LDO_4,
42 };
43
44 enum tps6594_multi_regulator_id {
45 /* Multi-phase DCDC's */
46 TPS6594_BUCK_12,
47 TPS6594_BUCK_34,
48 TPS6594_BUCK_123,
49 TPS6594_BUCK_1234,
50 };
51
52 struct tps6594_regulator_irq_type {
53 const char *irq_name;
54 const char *regulator_name;
55 const char *event_name;
56 unsigned long event;
57 };
58
59 static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
60 { TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
61 { TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
62 { TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
63 { TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
64 { TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
65 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
66 { TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
67 { TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
68 { TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
69 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
70 };
71
72 static struct tps6594_regulator_irq_type tps65224_ext_regulator_irq_types[] = {
73 { TPS65224_IRQ_NAME_VCCA_UVOV, "VCCA", "voltage out of range",
74 REGULATOR_EVENT_REGULATION_OUT },
75 { TPS65224_IRQ_NAME_VMON1_UVOV, "VMON1", "voltage out of range",
76 REGULATOR_EVENT_REGULATION_OUT },
77 { TPS65224_IRQ_NAME_VMON2_UVOV, "VMON2", "voltage out of range",
78 REGULATOR_EVENT_REGULATION_OUT },
79 };
80
81 struct tps6594_regulator_irq_data {
82 struct device *dev;
83 struct tps6594_regulator_irq_type *type;
84 struct regulator_dev *rdev;
85 };
86
87 struct tps6594_ext_regulator_irq_data {
88 struct device *dev;
89 struct tps6594_regulator_irq_type *type;
90 };
91
92 #define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
93 _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
94 _ct, _ncl, _bpm) \
95 { \
96 .name = _name, \
97 .of_match = _of, \
98 .regulators_node = of_match_ptr("regulators"), \
99 .supply_name = _of, \
100 .id = _id, \
101 .ops = &(_ops), \
102 .n_voltages = _n, \
103 .type = _type, \
104 .owner = THIS_MODULE, \
105 .vsel_reg = _vr, \
106 .vsel_mask = _vm, \
107 .csel_reg = _cr, \
108 .csel_mask = _cm, \
109 .curr_table = _ct, \
110 .n_current_limits = _ncl, \
111 .enable_reg = _er, \
112 .enable_mask = _em, \
113 .volt_table = NULL, \
114 .linear_ranges = _lr, \
115 .n_linear_ranges = _nlr, \
116 .ramp_delay = _delay, \
117 .fixed_uV = _fuv, \
118 .bypass_reg = _vr, \
119 .bypass_mask = _bpm, \
120 } \
121
122 static const struct linear_range bucks_ranges[] = {
123 REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
124 REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
125 REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
126 REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
127 };
128
129 static const struct linear_range ldos_1_2_3_ranges[] = {
130 REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
131 };
132
133 static const struct linear_range ldos_4_ranges[] = {
134 REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
135 };
136
137 /* Voltage range for TPS65224 Bucks and LDOs */
138 static const struct linear_range tps65224_bucks_1_ranges[] = {
139 REGULATOR_LINEAR_RANGE(500000, 0x0a, 0x0e, 20000),
140 REGULATOR_LINEAR_RANGE(600000, 0x0f, 0x72, 5000),
141 REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
142 REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xfd, 20000),
143 };
144
145 static const struct linear_range tps65224_bucks_2_3_4_ranges[] = {
146 REGULATOR_LINEAR_RANGE(500000, 0x0, 0x1a, 25000),
147 REGULATOR_LINEAR_RANGE(1200000, 0x1b, 0x45, 50000),
148 };
149
150 static const struct linear_range tps65224_ldos_1_ranges[] = {
151 REGULATOR_LINEAR_RANGE(1200000, 0xC, 0x36, 50000),
152 };
153
154 static const struct linear_range tps65224_ldos_2_3_ranges[] = {
155 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x38, 50000),
156 };
157
158 /* Operations permitted on BUCK1/2/3/4/5 */
159 static const struct regulator_ops tps6594_bucks_ops = {
160 .is_enabled = regulator_is_enabled_regmap,
161 .enable = regulator_enable_regmap,
162 .disable = regulator_disable_regmap,
163 .get_voltage_sel = regulator_get_voltage_sel_regmap,
164 .set_voltage_sel = regulator_set_voltage_sel_regmap,
165 .list_voltage = regulator_list_voltage_linear_range,
166 .map_voltage = regulator_map_voltage_linear_range,
167 .set_voltage_time_sel = regulator_set_voltage_time_sel,
168
169 };
170
171 /* Operations permitted on LDO1/2/3 */
172 static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
173 .is_enabled = regulator_is_enabled_regmap,
174 .enable = regulator_enable_regmap,
175 .disable = regulator_disable_regmap,
176 .get_voltage_sel = regulator_get_voltage_sel_regmap,
177 .set_voltage_sel = regulator_set_voltage_sel_regmap,
178 .list_voltage = regulator_list_voltage_linear_range,
179 .map_voltage = regulator_map_voltage_linear_range,
180 .set_bypass = regulator_set_bypass_regmap,
181 .get_bypass = regulator_get_bypass_regmap,
182 };
183
184 /* Operations permitted on LDO4 */
185 static const struct regulator_ops tps6594_ldos_4_ops = {
186 .is_enabled = regulator_is_enabled_regmap,
187 .enable = regulator_enable_regmap,
188 .disable = regulator_disable_regmap,
189 .get_voltage_sel = regulator_get_voltage_sel_regmap,
190 .set_voltage_sel = regulator_set_voltage_sel_regmap,
191 .list_voltage = regulator_list_voltage_linear_range,
192 .map_voltage = regulator_map_voltage_linear_range,
193 };
194
195 static const struct regulator_desc buck_regs[] = {
196 TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
197 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
198 TPS6594_REG_BUCKX_VOUT_1(0),
199 TPS6594_MASK_BUCKS_VSET,
200 TPS6594_REG_BUCKX_CTRL(0),
201 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
202 4, 0, 0, NULL, 0, 0),
203 TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
204 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
205 TPS6594_REG_BUCKX_VOUT_1(1),
206 TPS6594_MASK_BUCKS_VSET,
207 TPS6594_REG_BUCKX_CTRL(1),
208 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
209 4, 0, 0, NULL, 0, 0),
210 TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
211 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
212 TPS6594_REG_BUCKX_VOUT_1(2),
213 TPS6594_MASK_BUCKS_VSET,
214 TPS6594_REG_BUCKX_CTRL(2),
215 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
216 4, 0, 0, NULL, 0, 0),
217 TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
218 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
219 TPS6594_REG_BUCKX_VOUT_1(3),
220 TPS6594_MASK_BUCKS_VSET,
221 TPS6594_REG_BUCKX_CTRL(3),
222 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
223 4, 0, 0, NULL, 0, 0),
224 TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
225 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
226 TPS6594_REG_BUCKX_VOUT_1(4),
227 TPS6594_MASK_BUCKS_VSET,
228 TPS6594_REG_BUCKX_CTRL(4),
229 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
230 4, 0, 0, NULL, 0, 0),
231 };
232
233 /* Buck configuration for TPS65224 */
234 static const struct regulator_desc tps65224_buck_regs[] = {
235 TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
236 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
237 TPS6594_REG_BUCKX_VOUT_1(0),
238 TPS65224_MASK_BUCK1_VSET,
239 TPS6594_REG_BUCKX_CTRL(0),
240 TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
241 4, 0, 0, NULL, 0, 0),
242 TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
243 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
244 TPS6594_REG_BUCKX_VOUT_1(1),
245 TPS65224_MASK_BUCKS_VSET,
246 TPS6594_REG_BUCKX_CTRL(1),
247 TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
248 4, 0, 0, NULL, 0, 0),
249 TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
250 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
251 TPS6594_REG_BUCKX_VOUT_1(2),
252 TPS65224_MASK_BUCKS_VSET,
253 TPS6594_REG_BUCKX_CTRL(2),
254 TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
255 4, 0, 0, NULL, 0, 0),
256 TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
257 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
258 TPS6594_REG_BUCKX_VOUT_1(3),
259 TPS65224_MASK_BUCKS_VSET,
260 TPS6594_REG_BUCKX_CTRL(3),
261 TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
262 4, 0, 0, NULL, 0, 0),
263 };
264
265 static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
266 { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
267 { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
268 { TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
269 { TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
270 REGULATOR_EVENT_OVER_CURRENT },
271 };
272
273 static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
274 { TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
275 { TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
276 { TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
277 { TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
278 REGULATOR_EVENT_OVER_CURRENT },
279 };
280
281 static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
282 { TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
283 { TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
284 { TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
285 { TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
286 REGULATOR_EVENT_OVER_CURRENT },
287 };
288
289 static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
290 { TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
291 { TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
292 { TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
293 { TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
294 REGULATOR_EVENT_OVER_CURRENT },
295 };
296
297 static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
298 { TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
299 { TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
300 { TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
301 { TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
302 REGULATOR_EVENT_OVER_CURRENT },
303 };
304
305 static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
306 { TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
307 { TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
308 { TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
309 { TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
310 REGULATOR_EVENT_OVER_CURRENT },
311 };
312
313 static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
314 { TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
315 { TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
316 { TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
317 { TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
318 REGULATOR_EVENT_OVER_CURRENT },
319 };
320
321 static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
322 { TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
323 { TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
324 { TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
325 { TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
326 REGULATOR_EVENT_OVER_CURRENT },
327 };
328
329 static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
330 { TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
331 { TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
332 { TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
333 { TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
334 REGULATOR_EVENT_OVER_CURRENT },
335 };
336
337 static struct tps6594_regulator_irq_type tps65224_buck1_irq_types[] = {
338 { TPS65224_IRQ_NAME_BUCK1_UVOV, "BUCK1", "voltage out of range",
339 REGULATOR_EVENT_REGULATION_OUT },
340 };
341
342 static struct tps6594_regulator_irq_type tps65224_buck2_irq_types[] = {
343 { TPS65224_IRQ_NAME_BUCK2_UVOV, "BUCK2", "voltage out of range",
344 REGULATOR_EVENT_REGULATION_OUT },
345 };
346
347 static struct tps6594_regulator_irq_type tps65224_buck3_irq_types[] = {
348 { TPS65224_IRQ_NAME_BUCK3_UVOV, "BUCK3", "voltage out of range",
349 REGULATOR_EVENT_REGULATION_OUT },
350 };
351
352 static struct tps6594_regulator_irq_type tps65224_buck4_irq_types[] = {
353 { TPS65224_IRQ_NAME_BUCK4_UVOV, "BUCK4", "voltage out of range",
354 REGULATOR_EVENT_REGULATION_OUT },
355 };
356
357 static struct tps6594_regulator_irq_type tps65224_ldo1_irq_types[] = {
358 { TPS65224_IRQ_NAME_LDO1_UVOV, "LDO1", "voltage out of range",
359 REGULATOR_EVENT_REGULATION_OUT },
360 };
361
362 static struct tps6594_regulator_irq_type tps65224_ldo2_irq_types[] = {
363 { TPS65224_IRQ_NAME_LDO2_UVOV, "LDO2", "voltage out of range",
364 REGULATOR_EVENT_REGULATION_OUT },
365 };
366
367 static struct tps6594_regulator_irq_type tps65224_ldo3_irq_types[] = {
368 { TPS65224_IRQ_NAME_LDO3_UVOV, "LDO3", "voltage out of range",
369 REGULATOR_EVENT_REGULATION_OUT },
370 };
371
372 static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
373 tps6594_buck1_irq_types,
374 tps6594_buck2_irq_types,
375 tps6594_buck3_irq_types,
376 tps6594_buck4_irq_types,
377 tps6594_buck5_irq_types,
378 };
379
380 static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
381 tps6594_ldo1_irq_types,
382 tps6594_ldo2_irq_types,
383 tps6594_ldo3_irq_types,
384 tps6594_ldo4_irq_types,
385 };
386
387 static struct tps6594_regulator_irq_type *tps65224_bucks_irq_types[] = {
388 tps65224_buck1_irq_types,
389 tps65224_buck2_irq_types,
390 tps65224_buck3_irq_types,
391 tps65224_buck4_irq_types,
392 };
393
394 static struct tps6594_regulator_irq_type *tps65224_ldos_irq_types[] = {
395 tps65224_ldo1_irq_types,
396 tps65224_ldo2_irq_types,
397 tps65224_ldo3_irq_types,
398 };
399
400 static const struct regulator_desc tps6594_multi_regs[] = {
401 TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
402 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
403 TPS6594_REG_BUCKX_VOUT_1(0),
404 TPS6594_MASK_BUCKS_VSET,
405 TPS6594_REG_BUCKX_CTRL(0),
406 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
407 4, 4000, 0, NULL, 0, 0),
408 TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
409 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
410 TPS6594_REG_BUCKX_VOUT_1(2),
411 TPS6594_MASK_BUCKS_VSET,
412 TPS6594_REG_BUCKX_CTRL(2),
413 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
414 4, 0, 0, NULL, 0, 0),
415 TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
416 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
417 TPS6594_REG_BUCKX_VOUT_1(0),
418 TPS6594_MASK_BUCKS_VSET,
419 TPS6594_REG_BUCKX_CTRL(0),
420 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
421 4, 4000, 0, NULL, 0, 0),
422 TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
423 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
424 TPS6594_REG_BUCKX_VOUT_1(0),
425 TPS6594_MASK_BUCKS_VSET,
426 TPS6594_REG_BUCKX_CTRL(0),
427 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
428 4, 4000, 0, NULL, 0, 0),
429 };
430
431 static const struct regulator_desc tps65224_multi_regs[] = {
432 TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
433 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
434 TPS6594_REG_BUCKX_VOUT_1(0),
435 TPS65224_MASK_BUCK1_VSET,
436 TPS6594_REG_BUCKX_CTRL(0),
437 TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
438 4, 4000, 0, NULL, 0, 0),
439 };
440
441 static const struct regulator_desc tps6594_ldo_regs[] = {
442 TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
443 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
444 TPS6594_REG_LDOX_VOUT(0),
445 TPS6594_MASK_LDO123_VSET,
446 TPS6594_REG_LDOX_CTRL(0),
447 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
448 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
449 TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
450 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
451 TPS6594_REG_LDOX_VOUT(1),
452 TPS6594_MASK_LDO123_VSET,
453 TPS6594_REG_LDOX_CTRL(1),
454 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
455 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
456 TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
457 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
458 TPS6594_REG_LDOX_VOUT(2),
459 TPS6594_MASK_LDO123_VSET,
460 TPS6594_REG_LDOX_CTRL(2),
461 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
462 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
463 TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4,
464 REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1,
465 TPS6594_REG_LDOX_VOUT(3),
466 TPS6594_MASK_LDO4_VSET,
467 TPS6594_REG_LDOX_CTRL(3),
468 TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges,
469 1, 0, 0, NULL, 0, 0),
470 };
471
472 static const struct regulator_desc tps65224_ldo_regs[] = {
473 TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
474 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
475 TPS6594_REG_LDOX_VOUT(0),
476 TPS6594_MASK_LDO123_VSET,
477 TPS6594_REG_LDOX_CTRL(0),
478 TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_1_ranges,
479 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
480 TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
481 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
482 TPS6594_REG_LDOX_VOUT(1),
483 TPS6594_MASK_LDO123_VSET,
484 TPS6594_REG_LDOX_CTRL(1),
485 TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
486 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
487 TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
488 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
489 TPS6594_REG_LDOX_VOUT(2),
490 TPS6594_MASK_LDO123_VSET,
491 TPS6594_REG_LDOX_CTRL(2),
492 TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
493 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
494 };
495
tps6594_regulator_irq_handler(int irq,void * data)496 static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
497 {
498 struct tps6594_regulator_irq_data *irq_data = data;
499
500 if (irq_data->type->event_name[0] == '\0') {
501 /* This is the timeout interrupt no specific regulator */
502 dev_err(irq_data->dev,
503 "System was put in shutdown due to timeout during an active or standby transition.\n");
504 return IRQ_HANDLED;
505 }
506
507 dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
508 irq_data->type->event_name, irq_data->type->regulator_name);
509
510 regulator_notifier_call_chain(irq_data->rdev,
511 irq_data->type->event, NULL);
512
513 return IRQ_HANDLED;
514 }
515
tps6594_request_reg_irqs(struct platform_device * pdev,struct regulator_dev * rdev,struct tps6594_regulator_irq_data * irq_data,struct tps6594_regulator_irq_type * regs_irq_types,size_t interrupt_cnt,int * irq_idx)516 static int tps6594_request_reg_irqs(struct platform_device *pdev,
517 struct regulator_dev *rdev,
518 struct tps6594_regulator_irq_data *irq_data,
519 struct tps6594_regulator_irq_type *regs_irq_types,
520 size_t interrupt_cnt,
521 int *irq_idx)
522 {
523 struct tps6594_regulator_irq_type *irq_type;
524 struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
525 size_t j;
526 int irq;
527 int error;
528
529 for (j = 0; j < interrupt_cnt; j++) {
530 irq_type = ®s_irq_types[j];
531 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
532 if (irq < 0)
533 return -EINVAL;
534
535 irq_data[*irq_idx].dev = tps->dev;
536 irq_data[*irq_idx].type = irq_type;
537 irq_data[*irq_idx].rdev = rdev;
538
539 error = devm_request_threaded_irq(tps->dev, irq, NULL,
540 tps6594_regulator_irq_handler, IRQF_ONESHOT,
541 irq_type->irq_name, &irq_data[*irq_idx]);
542 if (error) {
543 dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
544 irq_type->irq_name, irq, error);
545 return error;
546 }
547 (*irq_idx)++;
548 }
549 return 0;
550 }
551
tps6594_regulator_probe(struct platform_device * pdev)552 static int tps6594_regulator_probe(struct platform_device *pdev)
553 {
554 struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
555 struct regulator_dev *rdev;
556 struct device_node *np = NULL;
557 struct device_node *np_pmic_parent = NULL;
558 struct regulator_config config = {};
559 struct tps6594_regulator_irq_data *irq_data;
560 struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
561 struct tps6594_regulator_irq_type *irq_type;
562 struct tps6594_regulator_irq_type *irq_types;
563 bool buck_configured[BUCK_NB] = { false };
564 bool buck_multi[MULTI_PHASE_NB] = { false };
565
566 static const char *npname;
567 int error, i, irq, multi;
568 int irq_idx = 0;
569 int buck_idx = 0;
570 int nr_ldo;
571 int nr_buck;
572 int nr_types;
573 unsigned int irq_count;
574 unsigned int multi_phase_cnt;
575 size_t reg_irq_nb;
576 struct tps6594_regulator_irq_type **bucks_irq_types;
577 const struct regulator_desc *multi_regs;
578 struct tps6594_regulator_irq_type **ldos_irq_types;
579 const struct regulator_desc *ldo_regs;
580 size_t interrupt_count;
581
582 if (tps->chip_id == TPS65224) {
583 bucks_irq_types = tps65224_bucks_irq_types;
584 interrupt_count = ARRAY_SIZE(tps65224_buck1_irq_types);
585 multi_regs = tps65224_multi_regs;
586 ldos_irq_types = tps65224_ldos_irq_types;
587 ldo_regs = tps65224_ldo_regs;
588 multi_phase_cnt = ARRAY_SIZE(tps65224_multi_regs);
589 } else {
590 bucks_irq_types = tps6594_bucks_irq_types;
591 interrupt_count = ARRAY_SIZE(tps6594_buck1_irq_types);
592 multi_regs = tps6594_multi_regs;
593 ldos_irq_types = tps6594_ldos_irq_types;
594 ldo_regs = tps6594_ldo_regs;
595 multi_phase_cnt = ARRAY_SIZE(tps6594_multi_regs);
596 }
597
598 enum {
599 MULTI_BUCK12,
600 MULTI_BUCK12_34,
601 MULTI_BUCK123,
602 MULTI_BUCK1234,
603 };
604
605 config.dev = tps->dev;
606 config.driver_data = tps;
607 config.regmap = tps->regmap;
608
609 /*
610 * Switch case defines different possible multi phase config
611 * This is based on dts buck node name.
612 * Buck node name must be chosen accordingly.
613 * Default case is no Multiphase buck.
614 * In case of Multiphase configuration, value should be defined for
615 * buck_configured to avoid creating bucks for every buck in multiphase
616 */
617 for (multi = 0; multi < multi_phase_cnt; multi++) {
618 np = of_find_node_by_name(tps->dev->of_node, multi_regs[multi].supply_name);
619 npname = of_node_full_name(np);
620 np_pmic_parent = of_get_parent(of_get_parent(np));
621 if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
622 continue;
623 if (strcmp(npname, multi_regs[multi].supply_name) == 0) {
624 switch (multi) {
625 case MULTI_BUCK12:
626 buck_multi[0] = true;
627 buck_configured[0] = true;
628 buck_configured[1] = true;
629 break;
630 /* multiphase buck34 is supported only with buck12 */
631 case MULTI_BUCK12_34:
632 buck_multi[0] = true;
633 buck_multi[1] = true;
634 buck_configured[0] = true;
635 buck_configured[1] = true;
636 buck_configured[2] = true;
637 buck_configured[3] = true;
638 break;
639 case MULTI_BUCK123:
640 buck_multi[2] = true;
641 buck_configured[0] = true;
642 buck_configured[1] = true;
643 buck_configured[2] = true;
644 break;
645 case MULTI_BUCK1234:
646 buck_multi[3] = true;
647 buck_configured[0] = true;
648 buck_configured[1] = true;
649 buck_configured[2] = true;
650 buck_configured[3] = true;
651 break;
652 }
653 }
654 }
655
656 if (tps->chip_id == TPS65224) {
657 nr_buck = ARRAY_SIZE(tps65224_buck_regs);
658 nr_ldo = ARRAY_SIZE(tps65224_ldo_regs);
659 nr_types = TPS65224_REGS_INT_NB;
660 } else {
661 nr_buck = ARRAY_SIZE(buck_regs);
662 nr_ldo = (tps->chip_id == LP8764) ? 0 : ARRAY_SIZE(tps6594_ldo_regs);
663 nr_types = REGS_INT_NB;
664 }
665
666 reg_irq_nb = nr_types * (nr_buck + nr_ldo);
667
668 irq_data = devm_kmalloc_array(tps->dev, reg_irq_nb,
669 sizeof(struct tps6594_regulator_irq_data), GFP_KERNEL);
670 if (!irq_data)
671 return -ENOMEM;
672
673 for (i = 0; i < multi_phase_cnt; i++) {
674 if (!buck_multi[i])
675 continue;
676
677 rdev = devm_regulator_register(&pdev->dev, &multi_regs[i], &config);
678 if (IS_ERR(rdev))
679 return dev_err_probe(tps->dev, PTR_ERR(rdev),
680 "failed to register %s regulator\n",
681 pdev->name);
682
683 /* config multiphase buck12+buck34 */
684 if (i == MULTI_BUCK12_34)
685 buck_idx = 2;
686
687 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
688 bucks_irq_types[buck_idx],
689 interrupt_count, &irq_idx);
690 if (error)
691 return error;
692
693 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
694 bucks_irq_types[buck_idx + 1],
695 interrupt_count, &irq_idx);
696 if (error)
697 return error;
698
699 if (i == MULTI_BUCK123 || i == MULTI_BUCK1234) {
700 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
701 tps6594_bucks_irq_types[buck_idx + 2],
702 interrupt_count,
703 &irq_idx);
704 if (error)
705 return error;
706 }
707 if (i == MULTI_BUCK1234) {
708 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
709 tps6594_bucks_irq_types[buck_idx + 3],
710 interrupt_count,
711 &irq_idx);
712 if (error)
713 return error;
714 }
715 }
716
717 for (i = 0; i < nr_buck; i++) {
718 if (buck_configured[i])
719 continue;
720
721 const struct regulator_desc *buck_cfg = (tps->chip_id == TPS65224) ?
722 tps65224_buck_regs : buck_regs;
723
724 rdev = devm_regulator_register(&pdev->dev, &buck_cfg[i], &config);
725 if (IS_ERR(rdev))
726 return dev_err_probe(tps->dev, PTR_ERR(rdev),
727 "failed to register %s regulator\n", pdev->name);
728
729 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
730 bucks_irq_types[i], interrupt_count, &irq_idx);
731 if (error)
732 return error;
733 }
734
735 /* LP8764 doesn't have LDO */
736 if (tps->chip_id != LP8764) {
737 for (i = 0; i < nr_ldo; i++) {
738 rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
739 if (IS_ERR(rdev))
740 return dev_err_probe(tps->dev, PTR_ERR(rdev),
741 "failed to register %s regulator\n",
742 pdev->name);
743
744 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
745 ldos_irq_types[i], interrupt_count,
746 &irq_idx);
747 if (error)
748 return error;
749 }
750 }
751
752 if (tps->chip_id == TPS65224) {
753 irq_types = tps65224_ext_regulator_irq_types;
754 irq_count = ARRAY_SIZE(tps65224_ext_regulator_irq_types);
755 } else {
756 irq_types = tps6594_ext_regulator_irq_types;
757 if (tps->chip_id == LP8764)
758 irq_count = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
759 else
760 /* TPS6593 supports only VCCA OV and UV */
761 irq_count = 2;
762 }
763
764 irq_ext_reg_data = devm_kmalloc_array(tps->dev,
765 irq_count,
766 sizeof(struct tps6594_ext_regulator_irq_data),
767 GFP_KERNEL);
768 if (!irq_ext_reg_data)
769 return -ENOMEM;
770
771 for (i = 0; i < irq_count; ++i) {
772 irq_type = &irq_types[i];
773 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
774 if (irq < 0)
775 return -EINVAL;
776
777 irq_ext_reg_data[i].dev = tps->dev;
778 irq_ext_reg_data[i].type = irq_type;
779
780 error = devm_request_threaded_irq(tps->dev, irq, NULL,
781 tps6594_regulator_irq_handler,
782 IRQF_ONESHOT,
783 irq_type->irq_name,
784 &irq_ext_reg_data[i]);
785 if (error)
786 return dev_err_probe(tps->dev, error,
787 "failed to request %s IRQ %d\n",
788 irq_type->irq_name, irq);
789 }
790 return 0;
791 }
792
793 static struct platform_driver tps6594_regulator_driver = {
794 .driver = {
795 .name = "tps6594-regulator",
796 },
797 .probe = tps6594_regulator_probe,
798 };
799
800 module_platform_driver(tps6594_regulator_driver);
801
802 MODULE_ALIAS("platform:tps6594-regulator");
803 MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
804 MODULE_AUTHOR("Nirmala Devi Mal Nadar <m.nirmaladevi@ltts.com>");
805 MODULE_DESCRIPTION("TPS6594 voltage regulator driver");
806 MODULE_LICENSE("GPL");
807