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#define REGS_INT_NB 4
25
26enum tps6594_regulator_id {
27 /* DCDC's */
28 TPS6594_BUCK_1,
29 TPS6594_BUCK_2,
30 TPS6594_BUCK_3,
31 TPS6594_BUCK_4,
32 TPS6594_BUCK_5,
33
34 /* LDOs */
35 TPS6594_LDO_1,
36 TPS6594_LDO_2,
37 TPS6594_LDO_3,
38 TPS6594_LDO_4,
39};
40
41enum tps6594_multi_regulator_id {
42 /* Multi-phase DCDC's */
43 TPS6594_BUCK_12,
44 TPS6594_BUCK_34,
45 TPS6594_BUCK_123,
46 TPS6594_BUCK_1234,
47};
48
49struct tps6594_regulator_irq_type {
50 const char *irq_name;
51 const char *regulator_name;
52 const char *event_name;
53 unsigned long event;
54};
55
56static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
57 { TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
58 { TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
59 { TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
60 { TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
61 { TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
62 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
63 { TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
64 { TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
65 { TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
66 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
67};
68
69struct tps6594_regulator_irq_data {
70 struct device *dev;
71 struct tps6594_regulator_irq_type *type;
72 struct regulator_dev *rdev;
73};
74
75struct tps6594_ext_regulator_irq_data {
76 struct device *dev;
77 struct tps6594_regulator_irq_type *type;
78};
79
80#define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
81 _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
82 _ct, _ncl, _bpm) \
83 { \
84 .name = _name, \
85 .of_match = _of, \
86 .regulators_node = of_match_ptr("regulators"), \
87 .supply_name = _of, \
88 .id = _id, \
89 .ops = &(_ops), \
90 .n_voltages = _n, \
91 .type = _type, \
92 .owner = THIS_MODULE, \
93 .vsel_reg = _vr, \
94 .vsel_mask = _vm, \
95 .csel_reg = _cr, \
96 .csel_mask = _cm, \
97 .curr_table = _ct, \
98 .n_current_limits = _ncl, \
99 .enable_reg = _er, \
100 .enable_mask = _em, \
101 .volt_table = NULL, \
102 .linear_ranges = _lr, \
103 .n_linear_ranges = _nlr, \
104 .ramp_delay = _delay, \
105 .fixed_uV = _fuv, \
106 .bypass_reg = _vr, \
107 .bypass_mask = _bpm, \
108 } \
109
110static const struct linear_range bucks_ranges[] = {
111 REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
112 REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
113 REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
114 REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
115};
116
117static const struct linear_range ldos_1_2_3_ranges[] = {
118 REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
119};
120
121static const struct linear_range ldos_4_ranges[] = {
122 REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
123};
124
125/* Operations permitted on BUCK1/2/3/4/5 */
126static const struct regulator_ops tps6594_bucks_ops = {
127 .is_enabled = regulator_is_enabled_regmap,
128 .enable = regulator_enable_regmap,
129 .disable = regulator_disable_regmap,
130 .get_voltage_sel = regulator_get_voltage_sel_regmap,
131 .set_voltage_sel = regulator_set_voltage_sel_regmap,
132 .list_voltage = regulator_list_voltage_linear_range,
133 .map_voltage = regulator_map_voltage_linear_range,
134 .set_voltage_time_sel = regulator_set_voltage_time_sel,
135
136};
137
138/* Operations permitted on LDO1/2/3 */
139static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
140 .is_enabled = regulator_is_enabled_regmap,
141 .enable = regulator_enable_regmap,
142 .disable = regulator_disable_regmap,
143 .get_voltage_sel = regulator_get_voltage_sel_regmap,
144 .set_voltage_sel = regulator_set_voltage_sel_regmap,
145 .list_voltage = regulator_list_voltage_linear_range,
146 .map_voltage = regulator_map_voltage_linear_range,
147 .set_bypass = regulator_set_bypass_regmap,
148 .get_bypass = regulator_get_bypass_regmap,
149};
150
151/* Operations permitted on LDO4 */
152static const struct regulator_ops tps6594_ldos_4_ops = {
153 .is_enabled = regulator_is_enabled_regmap,
154 .enable = regulator_enable_regmap,
155 .disable = regulator_disable_regmap,
156 .get_voltage_sel = regulator_get_voltage_sel_regmap,
157 .set_voltage_sel = regulator_set_voltage_sel_regmap,
158 .list_voltage = regulator_list_voltage_linear_range,
159 .map_voltage = regulator_map_voltage_linear_range,
160};
161
162static const struct regulator_desc buck_regs[] = {
163 TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
164 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
165 TPS6594_REG_BUCKX_VOUT_1(0),
166 TPS6594_MASK_BUCKS_VSET,
167 TPS6594_REG_BUCKX_CTRL(0),
168 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
169 4, 0, 0, NULL, 0, 0),
170 TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
171 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
172 TPS6594_REG_BUCKX_VOUT_1(1),
173 TPS6594_MASK_BUCKS_VSET,
174 TPS6594_REG_BUCKX_CTRL(1),
175 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
176 4, 0, 0, NULL, 0, 0),
177 TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
178 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
179 TPS6594_REG_BUCKX_VOUT_1(2),
180 TPS6594_MASK_BUCKS_VSET,
181 TPS6594_REG_BUCKX_CTRL(2),
182 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
183 4, 0, 0, NULL, 0, 0),
184 TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
185 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
186 TPS6594_REG_BUCKX_VOUT_1(3),
187 TPS6594_MASK_BUCKS_VSET,
188 TPS6594_REG_BUCKX_CTRL(3),
189 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
190 4, 0, 0, NULL, 0, 0),
191 TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
192 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
193 TPS6594_REG_BUCKX_VOUT_1(4),
194 TPS6594_MASK_BUCKS_VSET,
195 TPS6594_REG_BUCKX_CTRL(4),
196 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
197 4, 0, 0, NULL, 0, 0),
198};
199
200static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
201 { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
202 { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
203 { TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
204 { TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
205 REGULATOR_EVENT_OVER_CURRENT },
206};
207
208static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
209 { TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
210 { TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
211 { TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
212 { TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
213 REGULATOR_EVENT_OVER_CURRENT },
214};
215
216static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
217 { TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
218 { TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
219 { TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
220 { TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
221 REGULATOR_EVENT_OVER_CURRENT },
222};
223
224static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
225 { TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
226 { TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
227 { TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
228 { TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
229 REGULATOR_EVENT_OVER_CURRENT },
230};
231
232static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
233 { TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
234 { TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
235 { TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
236 { TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
237 REGULATOR_EVENT_OVER_CURRENT },
238};
239
240static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
241 { TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
242 { TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
243 { TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
244 { TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
245 REGULATOR_EVENT_OVER_CURRENT },
246};
247
248static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
249 { TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
250 { TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
251 { TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
252 { TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
253 REGULATOR_EVENT_OVER_CURRENT },
254};
255
256static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
257 { TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
258 { TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
259 { TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
260 { TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
261 REGULATOR_EVENT_OVER_CURRENT },
262};
263
264static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
265 { TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
266 { TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
267 { TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
268 { TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
269 REGULATOR_EVENT_OVER_CURRENT },
270};
271
272static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
273 tps6594_buck1_irq_types,
274 tps6594_buck2_irq_types,
275 tps6594_buck3_irq_types,
276 tps6594_buck4_irq_types,
277 tps6594_buck5_irq_types,
278};
279
280static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
281 tps6594_ldo1_irq_types,
282 tps6594_ldo2_irq_types,
283 tps6594_ldo3_irq_types,
284 tps6594_ldo4_irq_types,
285};
286
287static const struct regulator_desc multi_regs[] = {
288 TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
289 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
290 TPS6594_REG_BUCKX_VOUT_1(1),
291 TPS6594_MASK_BUCKS_VSET,
292 TPS6594_REG_BUCKX_CTRL(1),
293 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
294 4, 4000, 0, NULL, 0, 0),
295 TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
296 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
297 TPS6594_REG_BUCKX_VOUT_1(3),
298 TPS6594_MASK_BUCKS_VSET,
299 TPS6594_REG_BUCKX_CTRL(3),
300 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
301 4, 0, 0, NULL, 0, 0),
302 TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
303 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
304 TPS6594_REG_BUCKX_VOUT_1(1),
305 TPS6594_MASK_BUCKS_VSET,
306 TPS6594_REG_BUCKX_CTRL(1),
307 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
308 4, 4000, 0, NULL, 0, 0),
309 TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
310 REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
311 TPS6594_REG_BUCKX_VOUT_1(1),
312 TPS6594_MASK_BUCKS_VSET,
313 TPS6594_REG_BUCKX_CTRL(1),
314 TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
315 4, 4000, 0, NULL, 0, 0),
316};
317
318static const struct regulator_desc ldo_regs[] = {
319 TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
320 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
321 TPS6594_REG_LDOX_VOUT(0),
322 TPS6594_MASK_LDO123_VSET,
323 TPS6594_REG_LDOX_CTRL(0),
324 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
325 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
326 TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
327 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
328 TPS6594_REG_LDOX_VOUT(1),
329 TPS6594_MASK_LDO123_VSET,
330 TPS6594_REG_LDOX_CTRL(1),
331 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
332 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
333 TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
334 REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
335 TPS6594_REG_LDOX_VOUT(2),
336 TPS6594_MASK_LDO123_VSET,
337 TPS6594_REG_LDOX_CTRL(2),
338 TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
339 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
340 TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4,
341 REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1,
342 TPS6594_REG_LDOX_VOUT(3),
343 TPS6594_MASK_LDO4_VSET,
344 TPS6594_REG_LDOX_CTRL(3),
345 TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges,
346 1, 0, 0, NULL, 0, 0),
347};
348
349static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
350{
351 struct tps6594_regulator_irq_data *irq_data = data;
352
353 if (irq_data->type->event_name[0] == '\0') {
354 /* This is the timeout interrupt no specific regulator */
355 dev_err(irq_data->dev,
356 "System was put in shutdown due to timeout during an active or standby transition.\n");
357 return IRQ_HANDLED;
358 }
359
360 dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
361 irq_data->type->event_name, irq_data->type->regulator_name);
362
363 regulator_notifier_call_chain(rdev: irq_data->rdev,
364 event: irq_data->type->event, NULL);
365
366 return IRQ_HANDLED;
367}
368
369static int tps6594_request_reg_irqs(struct platform_device *pdev,
370 struct regulator_dev *rdev,
371 struct tps6594_regulator_irq_data *irq_data,
372 struct tps6594_regulator_irq_type *tps6594_regs_irq_types,
373 int *irq_idx)
374{
375 struct tps6594_regulator_irq_type *irq_type;
376 struct tps6594 *tps = dev_get_drvdata(dev: pdev->dev.parent);
377 int j;
378 int irq;
379 int error;
380
381 for (j = 0; j < REGS_INT_NB; j++) {
382 irq_type = &tps6594_regs_irq_types[j];
383 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
384 if (irq < 0)
385 return -EINVAL;
386
387 irq_data[*irq_idx].dev = tps->dev;
388 irq_data[*irq_idx].type = irq_type;
389 irq_data[*irq_idx].rdev = rdev;
390
391 error = devm_request_threaded_irq(dev: tps->dev, irq, NULL,
392 thread_fn: tps6594_regulator_irq_handler, IRQF_ONESHOT,
393 devname: irq_type->irq_name, dev_id: &irq_data[*irq_idx]);
394 if (error) {
395 dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
396 irq_type->irq_name, irq, error);
397 return error;
398 }
399 (*irq_idx)++;
400 }
401 return 0;
402}
403
404static int tps6594_regulator_probe(struct platform_device *pdev)
405{
406 struct tps6594 *tps = dev_get_drvdata(dev: pdev->dev.parent);
407 struct regulator_dev *rdev;
408 struct device_node *np = NULL;
409 struct device_node *np_pmic_parent = NULL;
410 struct regulator_config config = {};
411 struct tps6594_regulator_irq_data *irq_data;
412 struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
413 struct tps6594_regulator_irq_type *irq_type;
414 u8 buck_configured[BUCK_NB] = { 0 };
415 u8 buck_multi[MULTI_PHASE_NB] = { 0 };
416 static const char * const multiphases[] = {"buck12", "buck123", "buck1234", "buck34"};
417 static const char *npname;
418 int error, i, irq, multi, delta;
419 int irq_idx = 0;
420 int buck_idx = 0;
421 size_t ext_reg_irq_nb = 2;
422 size_t reg_irq_nb;
423 enum {
424 MULTI_BUCK12,
425 MULTI_BUCK123,
426 MULTI_BUCK1234,
427 MULTI_BUCK12_34,
428 MULTI_FIRST = MULTI_BUCK12,
429 MULTI_LAST = MULTI_BUCK12_34,
430 MULTI_NUM = MULTI_LAST - MULTI_FIRST + 1
431 };
432
433 config.dev = tps->dev;
434 config.driver_data = tps;
435 config.regmap = tps->regmap;
436
437 /*
438 * Switch case defines different possible multi phase config
439 * This is based on dts buck node name.
440 * Buck node name must be chosen accordingly.
441 * Default case is no Multiphase buck.
442 * In case of Multiphase configuration, value should be defined for
443 * buck_configured to avoid creating bucks for every buck in multiphase
444 */
445 for (multi = MULTI_FIRST; multi < MULTI_NUM; multi++) {
446 np = of_find_node_by_name(from: tps->dev->of_node, name: multiphases[multi]);
447 npname = of_node_full_name(np);
448 np_pmic_parent = of_get_parent(node: of_get_parent(node: np));
449 if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
450 continue;
451 delta = strcmp(npname, multiphases[multi]);
452 if (!delta) {
453 switch (multi) {
454 case MULTI_BUCK12:
455 buck_multi[0] = 1;
456 buck_configured[0] = 1;
457 buck_configured[1] = 1;
458 break;
459 /* multiphase buck34 is supported only with buck12 */
460 case MULTI_BUCK12_34:
461 buck_multi[0] = 1;
462 buck_multi[1] = 1;
463 buck_configured[0] = 1;
464 buck_configured[1] = 1;
465 buck_configured[2] = 1;
466 buck_configured[3] = 1;
467 break;
468 case MULTI_BUCK123:
469 buck_multi[2] = 1;
470 buck_configured[0] = 1;
471 buck_configured[1] = 1;
472 buck_configured[2] = 1;
473 break;
474 case MULTI_BUCK1234:
475 buck_multi[3] = 1;
476 buck_configured[0] = 1;
477 buck_configured[1] = 1;
478 buck_configured[2] = 1;
479 buck_configured[3] = 1;
480 break;
481 }
482 }
483 }
484
485 if (tps->chip_id == LP8764) {
486 /* There is only 4 buck on LP8764 */
487 buck_configured[4] = 1;
488 reg_irq_nb = size_mul(REGS_INT_NB, factor2: (BUCK_NB - 1));
489 } else {
490 reg_irq_nb = size_mul(REGS_INT_NB, factor2: (size_add(BUCK_NB, LDO_NB)));
491 }
492
493 irq_data = devm_kmalloc_array(dev: tps->dev, n: reg_irq_nb,
494 size: sizeof(struct tps6594_regulator_irq_data), GFP_KERNEL);
495 if (!irq_data)
496 return -ENOMEM;
497
498 for (i = 0; i < MULTI_PHASE_NB; i++) {
499 if (buck_multi[i] == 0)
500 continue;
501
502 rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &multi_regs[i], config: &config);
503 if (IS_ERR(ptr: rdev))
504 return dev_err_probe(dev: tps->dev, err: PTR_ERR(ptr: rdev),
505 fmt: "failed to register %s regulator\n",
506 pdev->name);
507
508 /* config multiphase buck12+buck34 */
509 if (i == 1)
510 buck_idx = 2;
511 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
512 tps6594_regs_irq_types: tps6594_bucks_irq_types[buck_idx], irq_idx: &irq_idx);
513 if (error)
514 return error;
515 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
516 tps6594_regs_irq_types: tps6594_bucks_irq_types[buck_idx + 1], irq_idx: &irq_idx);
517 if (error)
518 return error;
519
520 if (i == 2 || i == 3) {
521 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
522 tps6594_regs_irq_types: tps6594_bucks_irq_types[buck_idx + 2],
523 irq_idx: &irq_idx);
524 if (error)
525 return error;
526 }
527 if (i == 3) {
528 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
529 tps6594_regs_irq_types: tps6594_bucks_irq_types[buck_idx + 3],
530 irq_idx: &irq_idx);
531 if (error)
532 return error;
533 }
534 }
535
536 for (i = 0; i < BUCK_NB; i++) {
537 if (buck_configured[i] == 1)
538 continue;
539
540 rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &buck_regs[i], config: &config);
541 if (IS_ERR(ptr: rdev))
542 return dev_err_probe(dev: tps->dev, err: PTR_ERR(ptr: rdev),
543 fmt: "failed to register %s regulator\n",
544 pdev->name);
545
546 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
547 tps6594_regs_irq_types: tps6594_bucks_irq_types[i], irq_idx: &irq_idx);
548 if (error)
549 return error;
550 }
551
552 /* LP8764 dosen't have LDO */
553 if (tps->chip_id != LP8764) {
554 for (i = 0; i < ARRAY_SIZE(ldo_regs); i++) {
555 rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &ldo_regs[i], config: &config);
556 if (IS_ERR(ptr: rdev))
557 return dev_err_probe(dev: tps->dev, err: PTR_ERR(ptr: rdev),
558 fmt: "failed to register %s regulator\n",
559 pdev->name);
560
561 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
562 tps6594_regs_irq_types: tps6594_ldos_irq_types[i],
563 irq_idx: &irq_idx);
564 if (error)
565 return error;
566 }
567 }
568
569 if (tps->chip_id == LP8764)
570 ext_reg_irq_nb = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
571
572 irq_ext_reg_data = devm_kmalloc_array(dev: tps->dev,
573 n: ext_reg_irq_nb,
574 size: sizeof(struct tps6594_ext_regulator_irq_data),
575 GFP_KERNEL);
576 if (!irq_ext_reg_data)
577 return -ENOMEM;
578
579 for (i = 0; i < ext_reg_irq_nb; ++i) {
580 irq_type = &tps6594_ext_regulator_irq_types[i];
581
582 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
583 if (irq < 0)
584 return -EINVAL;
585
586 irq_ext_reg_data[i].dev = tps->dev;
587 irq_ext_reg_data[i].type = irq_type;
588
589 error = devm_request_threaded_irq(dev: tps->dev, irq, NULL,
590 thread_fn: tps6594_regulator_irq_handler,
591 IRQF_ONESHOT,
592 devname: irq_type->irq_name,
593 dev_id: &irq_ext_reg_data[i]);
594 if (error)
595 return dev_err_probe(dev: tps->dev, err: error,
596 fmt: "failed to request %s IRQ %d\n",
597 irq_type->irq_name, irq);
598 }
599 return 0;
600}
601
602static struct platform_driver tps6594_regulator_driver = {
603 .driver = {
604 .name = "tps6594-regulator",
605 },
606 .probe = tps6594_regulator_probe,
607};
608
609module_platform_driver(tps6594_regulator_driver);
610
611MODULE_ALIAS("platform:tps6594-regulator");
612MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
613MODULE_DESCRIPTION("TPS6594 voltage regulator driver");
614MODULE_LICENSE("GPL");
615

source code of linux/drivers/regulator/tps6594-regulator.c