1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Copyright (C) 2020 ROHM Semiconductors |
3 | // ROHM BD9576MUF/BD9573MUF regulator driver |
4 | |
5 | #include <linux/err.h> |
6 | #include <linux/gpio/consumer.h> |
7 | #include <linux/interrupt.h> |
8 | #include <linux/jiffies.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/mfd/rohm-bd957x.h> |
11 | #include <linux/mfd/rohm-generic.h> |
12 | #include <linux/module.h> |
13 | #include <linux/of.h> |
14 | #include <linux/platform_device.h> |
15 | #include <linux/property.h> |
16 | #include <linux/regulator/driver.h> |
17 | #include <linux/regulator/machine.h> |
18 | #include <linux/regulator/of_regulator.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/spinlock.h> |
21 | #include <linux/workqueue.h> |
22 | |
23 | #define BD957X_VOUTS1_VOLT 3300000 |
24 | #define BD957X_VOUTS4_BASE_VOLT 1030000 |
25 | #define BD957X_VOUTS34_NUM_VOLT 32 |
26 | |
27 | #define BD9576_THERM_IRQ_MASK_TW BIT(5) |
28 | #define BD9576_xVD_IRQ_MASK_VOUTL1 BIT(5) |
29 | #define BD9576_UVD_IRQ_MASK_VOUTS1_OCW BIT(6) |
30 | #define BD9576_xVD_IRQ_MASK_VOUT1TO4 0x0F |
31 | |
32 | static const unsigned int vout1_volt_table[] = { |
33 | 5000000, 4900000, 4800000, 4700000, 4600000, |
34 | 4500000, 4500000, 4500000, 5000000, 5100000, |
35 | 5200000, 5300000, 5400000, 5500000, 5500000, |
36 | 5500000 |
37 | }; |
38 | |
39 | static const unsigned int vout2_volt_table[] = { |
40 | 1800000, 1780000, 1760000, 1740000, 1720000, |
41 | 1700000, 1680000, 1660000, 1800000, 1820000, |
42 | 1840000, 1860000, 1880000, 1900000, 1920000, |
43 | 1940000 |
44 | }; |
45 | |
46 | static const unsigned int voutl1_volt_table[] = { |
47 | 2500000, 2540000, 2580000, 2620000, 2660000, |
48 | 2700000, 2740000, 2780000, 2500000, 2460000, |
49 | 2420000, 2380000, 2340000, 2300000, 2260000, |
50 | 2220000 |
51 | }; |
52 | |
53 | static const struct linear_range vout1_xvd_ranges[] = { |
54 | REGULATOR_LINEAR_RANGE(225000, 0x01, 0x2b, 0), |
55 | REGULATOR_LINEAR_RANGE(225000, 0x2c, 0x54, 5000), |
56 | REGULATOR_LINEAR_RANGE(425000, 0x55, 0x7f, 0), |
57 | }; |
58 | |
59 | static const struct linear_range vout234_xvd_ranges[] = { |
60 | REGULATOR_LINEAR_RANGE(17000, 0x01, 0x0f, 0), |
61 | REGULATOR_LINEAR_RANGE(17000, 0x10, 0x6d, 1000), |
62 | REGULATOR_LINEAR_RANGE(110000, 0x6e, 0x7f, 0), |
63 | }; |
64 | |
65 | static const struct linear_range voutL1_xvd_ranges[] = { |
66 | REGULATOR_LINEAR_RANGE(34000, 0x01, 0x0f, 0), |
67 | REGULATOR_LINEAR_RANGE(34000, 0x10, 0x6d, 2000), |
68 | REGULATOR_LINEAR_RANGE(220000, 0x6e, 0x7f, 0), |
69 | }; |
70 | |
71 | static struct linear_range voutS1_ocw_ranges_internal[] = { |
72 | REGULATOR_LINEAR_RANGE(200000, 0x01, 0x04, 0), |
73 | REGULATOR_LINEAR_RANGE(250000, 0x05, 0x18, 50000), |
74 | REGULATOR_LINEAR_RANGE(1200000, 0x19, 0x3f, 0), |
75 | }; |
76 | |
77 | static struct linear_range voutS1_ocw_ranges[] = { |
78 | REGULATOR_LINEAR_RANGE(50000, 0x01, 0x04, 0), |
79 | REGULATOR_LINEAR_RANGE(60000, 0x05, 0x18, 10000), |
80 | REGULATOR_LINEAR_RANGE(250000, 0x19, 0x3f, 0), |
81 | }; |
82 | |
83 | static struct linear_range voutS1_ocp_ranges_internal[] = { |
84 | REGULATOR_LINEAR_RANGE(300000, 0x01, 0x06, 0), |
85 | REGULATOR_LINEAR_RANGE(350000, 0x7, 0x1b, 50000), |
86 | REGULATOR_LINEAR_RANGE(1350000, 0x1c, 0x3f, 0), |
87 | }; |
88 | |
89 | static struct linear_range voutS1_ocp_ranges[] = { |
90 | REGULATOR_LINEAR_RANGE(70000, 0x01, 0x06, 0), |
91 | REGULATOR_LINEAR_RANGE(80000, 0x7, 0x1b, 10000), |
92 | REGULATOR_LINEAR_RANGE(280000, 0x1c, 0x3f, 0), |
93 | }; |
94 | |
95 | struct bd957x_regulator_data { |
96 | struct regulator_desc desc; |
97 | int base_voltage; |
98 | struct regulator_dev *rdev; |
99 | int ovd_notif; |
100 | int uvd_notif; |
101 | int temp_notif; |
102 | int ovd_err; |
103 | int uvd_err; |
104 | int temp_err; |
105 | const struct linear_range *xvd_ranges; |
106 | int num_xvd_ranges; |
107 | bool oc_supported; |
108 | unsigned int ovd_reg; |
109 | unsigned int uvd_reg; |
110 | unsigned int xvd_mask; |
111 | unsigned int ocp_reg; |
112 | unsigned int ocp_mask; |
113 | unsigned int ocw_reg; |
114 | unsigned int ocw_mask; |
115 | unsigned int ocw_rfet; |
116 | }; |
117 | |
118 | #define BD9576_NUM_REGULATORS 6 |
119 | #define BD9576_NUM_OVD_REGULATORS 5 |
120 | |
121 | struct bd957x_data { |
122 | struct bd957x_regulator_data regulator_data[BD9576_NUM_REGULATORS]; |
123 | struct regmap *regmap; |
124 | struct delayed_work therm_irq_suppress; |
125 | struct delayed_work ovd_irq_suppress; |
126 | struct delayed_work uvd_irq_suppress; |
127 | unsigned int therm_irq; |
128 | unsigned int ovd_irq; |
129 | unsigned int uvd_irq; |
130 | spinlock_t err_lock; |
131 | int regulator_global_err; |
132 | }; |
133 | |
134 | static int bd957x_vout34_list_voltage(struct regulator_dev *rdev, |
135 | unsigned int selector) |
136 | { |
137 | const struct regulator_desc *desc = rdev->desc; |
138 | int multiplier = selector & desc->vsel_mask & 0x7f; |
139 | int tune; |
140 | |
141 | /* VOUT3 and 4 has 10mV step */ |
142 | tune = multiplier * 10000; |
143 | |
144 | if (!(selector & 0x80)) |
145 | return desc->fixed_uV - tune; |
146 | |
147 | return desc->fixed_uV + tune; |
148 | } |
149 | |
150 | static int bd957x_list_voltage(struct regulator_dev *rdev, |
151 | unsigned int selector) |
152 | { |
153 | const struct regulator_desc *desc = rdev->desc; |
154 | int index = selector & desc->vsel_mask & 0x7f; |
155 | |
156 | if (!(selector & 0x80)) |
157 | index += desc->n_voltages/2; |
158 | |
159 | if (index >= desc->n_voltages) |
160 | return -EINVAL; |
161 | |
162 | return desc->volt_table[index]; |
163 | } |
164 | |
165 | static void bd9576_fill_ovd_flags(struct bd957x_regulator_data *data, |
166 | bool warn) |
167 | { |
168 | if (warn) { |
169 | data->ovd_notif = REGULATOR_EVENT_OVER_VOLTAGE_WARN; |
170 | data->ovd_err = REGULATOR_ERROR_OVER_VOLTAGE_WARN; |
171 | } else { |
172 | data->ovd_notif = REGULATOR_EVENT_REGULATION_OUT; |
173 | data->ovd_err = REGULATOR_ERROR_REGULATION_OUT; |
174 | } |
175 | } |
176 | |
177 | static void bd9576_fill_ocp_flags(struct bd957x_regulator_data *data, |
178 | bool warn) |
179 | { |
180 | if (warn) { |
181 | data->uvd_notif = REGULATOR_EVENT_OVER_CURRENT_WARN; |
182 | data->uvd_err = REGULATOR_ERROR_OVER_CURRENT_WARN; |
183 | } else { |
184 | data->uvd_notif = REGULATOR_EVENT_OVER_CURRENT; |
185 | data->uvd_err = REGULATOR_ERROR_OVER_CURRENT; |
186 | } |
187 | } |
188 | |
189 | static void bd9576_fill_uvd_flags(struct bd957x_regulator_data *data, |
190 | bool warn) |
191 | { |
192 | if (warn) { |
193 | data->uvd_notif = REGULATOR_EVENT_UNDER_VOLTAGE_WARN; |
194 | data->uvd_err = REGULATOR_ERROR_UNDER_VOLTAGE_WARN; |
195 | } else { |
196 | data->uvd_notif = REGULATOR_EVENT_UNDER_VOLTAGE; |
197 | data->uvd_err = REGULATOR_ERROR_UNDER_VOLTAGE; |
198 | } |
199 | } |
200 | |
201 | static void bd9576_fill_temp_flags(struct bd957x_regulator_data *data, |
202 | bool enable, bool warn) |
203 | { |
204 | if (!enable) { |
205 | data->temp_notif = 0; |
206 | data->temp_err = 0; |
207 | } else if (warn) { |
208 | data->temp_notif = REGULATOR_EVENT_OVER_TEMP_WARN; |
209 | data->temp_err = REGULATOR_ERROR_OVER_TEMP_WARN; |
210 | } else { |
211 | data->temp_notif = REGULATOR_EVENT_OVER_TEMP; |
212 | data->temp_err = REGULATOR_ERROR_OVER_TEMP; |
213 | } |
214 | } |
215 | |
216 | static int bd9576_set_limit(const struct linear_range *r, int num_ranges, |
217 | struct regmap *regmap, int reg, int mask, int lim) |
218 | { |
219 | int ret; |
220 | bool found; |
221 | int sel = 0; |
222 | |
223 | if (lim) { |
224 | |
225 | ret = linear_range_get_selector_low_array(r, ranges: num_ranges, |
226 | val: lim, selector: &sel, found: &found); |
227 | if (ret) |
228 | return ret; |
229 | |
230 | if (!found) |
231 | dev_warn(regmap_get_device(regmap), |
232 | "limit %d out of range. Setting lower\n" , |
233 | lim); |
234 | } |
235 | |
236 | return regmap_update_bits(map: regmap, reg, mask, val: sel); |
237 | } |
238 | |
239 | static bool check_ocp_flag_mismatch(struct regulator_dev *rdev, int severity, |
240 | struct bd957x_regulator_data *r) |
241 | { |
242 | if ((severity == REGULATOR_SEVERITY_ERR && |
243 | r->uvd_notif != REGULATOR_EVENT_OVER_CURRENT) || |
244 | (severity == REGULATOR_SEVERITY_WARN && |
245 | r->uvd_notif != REGULATOR_EVENT_OVER_CURRENT_WARN)) { |
246 | dev_warn(rdev_get_dev(rdev), |
247 | "Can't support both OCP WARN and ERR\n" ); |
248 | /* Do not overwrite ERR config with WARN */ |
249 | if (severity == REGULATOR_SEVERITY_WARN) |
250 | return true; |
251 | |
252 | bd9576_fill_ocp_flags(data: r, warn: 0); |
253 | } |
254 | |
255 | return false; |
256 | } |
257 | |
258 | static bool check_uvd_flag_mismatch(struct regulator_dev *rdev, int severity, |
259 | struct bd957x_regulator_data *r) |
260 | { |
261 | if ((severity == REGULATOR_SEVERITY_ERR && |
262 | r->uvd_notif != REGULATOR_EVENT_UNDER_VOLTAGE) || |
263 | (severity == REGULATOR_SEVERITY_WARN && |
264 | r->uvd_notif != REGULATOR_EVENT_UNDER_VOLTAGE_WARN)) { |
265 | dev_warn(rdev_get_dev(rdev), |
266 | "Can't support both UVD WARN and ERR\n" ); |
267 | if (severity == REGULATOR_SEVERITY_WARN) |
268 | return true; |
269 | |
270 | bd9576_fill_uvd_flags(data: r, warn: 0); |
271 | } |
272 | |
273 | return false; |
274 | } |
275 | |
276 | static bool check_ovd_flag_mismatch(struct regulator_dev *rdev, int severity, |
277 | struct bd957x_regulator_data *r) |
278 | { |
279 | if ((severity == REGULATOR_SEVERITY_ERR && |
280 | r->ovd_notif != REGULATOR_EVENT_REGULATION_OUT) || |
281 | (severity == REGULATOR_SEVERITY_WARN && |
282 | r->ovd_notif != REGULATOR_EVENT_OVER_VOLTAGE_WARN)) { |
283 | dev_warn(rdev_get_dev(rdev), |
284 | "Can't support both OVD WARN and ERR\n" ); |
285 | if (severity == REGULATOR_SEVERITY_WARN) |
286 | return true; |
287 | |
288 | bd9576_fill_ovd_flags(data: r, warn: 0); |
289 | } |
290 | |
291 | return false; |
292 | } |
293 | |
294 | static bool check_temp_flag_mismatch(struct regulator_dev *rdev, int severity, |
295 | struct bd957x_regulator_data *r) |
296 | { |
297 | if ((severity == REGULATOR_SEVERITY_ERR && |
298 | r->temp_notif != REGULATOR_EVENT_OVER_TEMP) || |
299 | (severity == REGULATOR_SEVERITY_WARN && |
300 | r->temp_notif != REGULATOR_EVENT_OVER_TEMP_WARN)) { |
301 | dev_warn(rdev_get_dev(rdev), |
302 | "Can't support both thermal WARN and ERR\n" ); |
303 | if (severity == REGULATOR_SEVERITY_WARN) |
304 | return true; |
305 | } |
306 | |
307 | return false; |
308 | } |
309 | |
310 | static int bd9576_set_ocp(struct regulator_dev *rdev, int lim_uA, int severity, |
311 | bool enable) |
312 | { |
313 | struct bd957x_data *d; |
314 | struct bd957x_regulator_data *r; |
315 | int reg, mask; |
316 | int Vfet, rfet; |
317 | const struct linear_range *range; |
318 | int num_ranges; |
319 | |
320 | if ((lim_uA && !enable) || (!lim_uA && enable)) |
321 | return -EINVAL; |
322 | |
323 | r = container_of(rdev->desc, struct bd957x_regulator_data, desc); |
324 | if (!r->oc_supported) |
325 | return -EINVAL; |
326 | |
327 | d = rdev_get_drvdata(rdev); |
328 | |
329 | if (severity == REGULATOR_SEVERITY_PROT) { |
330 | reg = r->ocp_reg; |
331 | mask = r->ocp_mask; |
332 | if (r->ocw_rfet) { |
333 | range = voutS1_ocp_ranges; |
334 | num_ranges = ARRAY_SIZE(voutS1_ocp_ranges); |
335 | rfet = r->ocw_rfet / 1000; |
336 | } else { |
337 | range = voutS1_ocp_ranges_internal; |
338 | num_ranges = ARRAY_SIZE(voutS1_ocp_ranges_internal); |
339 | /* Internal values are already micro-amperes */ |
340 | rfet = 1000; |
341 | } |
342 | } else { |
343 | reg = r->ocw_reg; |
344 | mask = r->ocw_mask; |
345 | |
346 | if (r->ocw_rfet) { |
347 | range = voutS1_ocw_ranges; |
348 | num_ranges = ARRAY_SIZE(voutS1_ocw_ranges); |
349 | rfet = r->ocw_rfet / 1000; |
350 | } else { |
351 | range = voutS1_ocw_ranges_internal; |
352 | num_ranges = ARRAY_SIZE(voutS1_ocw_ranges_internal); |
353 | /* Internal values are already micro-amperes */ |
354 | rfet = 1000; |
355 | } |
356 | |
357 | /* We abuse uvd fields for OCW on VoutS1 */ |
358 | if (r->uvd_notif) { |
359 | /* |
360 | * If both warning and error are requested, prioritize |
361 | * ERROR configuration |
362 | */ |
363 | if (check_ocp_flag_mismatch(rdev, severity, r)) |
364 | return 0; |
365 | } else { |
366 | bool warn = severity == REGULATOR_SEVERITY_WARN; |
367 | |
368 | bd9576_fill_ocp_flags(data: r, warn); |
369 | } |
370 | } |
371 | |
372 | /* |
373 | * limits are given in uA, rfet is mOhm |
374 | * Divide lim_uA by 1000 to get Vfet in uV. |
375 | * (We expect both Rfet and limit uA to be magnitude of hundreds of |
376 | * milli Amperes & milli Ohms => we should still have decent accuracy) |
377 | */ |
378 | Vfet = lim_uA/1000 * rfet; |
379 | |
380 | return bd9576_set_limit(r: range, num_ranges, regmap: d->regmap, |
381 | reg, mask, lim: Vfet); |
382 | } |
383 | |
384 | static int bd9576_set_uvp(struct regulator_dev *rdev, int lim_uV, int severity, |
385 | bool enable) |
386 | { |
387 | struct bd957x_data *d; |
388 | struct bd957x_regulator_data *r; |
389 | int mask, reg; |
390 | |
391 | if (severity == REGULATOR_SEVERITY_PROT) { |
392 | if (!enable || lim_uV) |
393 | return -EINVAL; |
394 | return 0; |
395 | } |
396 | |
397 | /* |
398 | * BD9576 has enable control as a special value in limit reg. Can't |
399 | * set limit but keep feature disabled or enable W/O given limit. |
400 | */ |
401 | if ((lim_uV && !enable) || (!lim_uV && enable)) |
402 | return -EINVAL; |
403 | |
404 | r = container_of(rdev->desc, struct bd957x_regulator_data, desc); |
405 | d = rdev_get_drvdata(rdev); |
406 | |
407 | mask = r->xvd_mask; |
408 | reg = r->uvd_reg; |
409 | /* |
410 | * Check that there is no mismatch for what the detection IRQs are to |
411 | * be used. |
412 | */ |
413 | if (r->uvd_notif) { |
414 | if (check_uvd_flag_mismatch(rdev, severity, r)) |
415 | return 0; |
416 | } else { |
417 | bd9576_fill_uvd_flags(data: r, warn: severity == REGULATOR_SEVERITY_WARN); |
418 | } |
419 | |
420 | return bd9576_set_limit(r: r->xvd_ranges, num_ranges: r->num_xvd_ranges, regmap: d->regmap, |
421 | reg, mask, lim: lim_uV); |
422 | } |
423 | |
424 | static int bd9576_set_ovp(struct regulator_dev *rdev, int lim_uV, int severity, |
425 | bool enable) |
426 | { |
427 | struct bd957x_data *d; |
428 | struct bd957x_regulator_data *r; |
429 | int mask, reg; |
430 | |
431 | if (severity == REGULATOR_SEVERITY_PROT) { |
432 | if (!enable || lim_uV) |
433 | return -EINVAL; |
434 | return 0; |
435 | } |
436 | |
437 | /* |
438 | * BD9576 has enable control as a special value in limit reg. Can't |
439 | * set limit but keep feature disabled or enable W/O given limit. |
440 | */ |
441 | if ((lim_uV && !enable) || (!lim_uV && enable)) |
442 | return -EINVAL; |
443 | |
444 | r = container_of(rdev->desc, struct bd957x_regulator_data, desc); |
445 | d = rdev_get_drvdata(rdev); |
446 | |
447 | mask = r->xvd_mask; |
448 | reg = r->ovd_reg; |
449 | /* |
450 | * Check that there is no mismatch for what the detection IRQs are to |
451 | * be used. |
452 | */ |
453 | if (r->ovd_notif) { |
454 | if (check_ovd_flag_mismatch(rdev, severity, r)) |
455 | return 0; |
456 | } else { |
457 | bd9576_fill_ovd_flags(data: r, warn: severity == REGULATOR_SEVERITY_WARN); |
458 | } |
459 | |
460 | return bd9576_set_limit(r: r->xvd_ranges, num_ranges: r->num_xvd_ranges, regmap: d->regmap, |
461 | reg, mask, lim: lim_uV); |
462 | } |
463 | |
464 | |
465 | static int bd9576_set_tw(struct regulator_dev *rdev, int lim, int severity, |
466 | bool enable) |
467 | { |
468 | struct bd957x_data *d; |
469 | struct bd957x_regulator_data *r; |
470 | int i; |
471 | |
472 | /* |
473 | * BD9576MUF has fixed temperature limits |
474 | * The detection can only be enabled/disabled |
475 | */ |
476 | if (lim) |
477 | return -EINVAL; |
478 | |
479 | /* Protection can't be disabled */ |
480 | if (severity == REGULATOR_SEVERITY_PROT) { |
481 | if (!enable) |
482 | return -EINVAL; |
483 | else |
484 | return 0; |
485 | } |
486 | |
487 | r = container_of(rdev->desc, struct bd957x_regulator_data, desc); |
488 | d = rdev_get_drvdata(rdev); |
489 | |
490 | /* |
491 | * Check that there is no mismatch for what the detection IRQs are to |
492 | * be used. |
493 | */ |
494 | if (r->temp_notif) |
495 | if (check_temp_flag_mismatch(rdev, severity, r)) |
496 | return 0; |
497 | |
498 | bd9576_fill_temp_flags(data: r, enable, warn: severity == REGULATOR_SEVERITY_WARN); |
499 | |
500 | if (enable) |
501 | return regmap_update_bits(map: d->regmap, BD957X_REG_INT_THERM_MASK, |
502 | BD9576_THERM_IRQ_MASK_TW, val: 0); |
503 | |
504 | /* |
505 | * If any of the regulators is interested in thermal warning we keep IRQ |
506 | * enabled. |
507 | */ |
508 | for (i = 0; i < BD9576_NUM_REGULATORS; i++) |
509 | if (d->regulator_data[i].temp_notif) |
510 | return 0; |
511 | |
512 | return regmap_update_bits(map: d->regmap, BD957X_REG_INT_THERM_MASK, |
513 | BD9576_THERM_IRQ_MASK_TW, |
514 | BD9576_THERM_IRQ_MASK_TW); |
515 | } |
516 | |
517 | static const struct regulator_ops bd9573_vout34_ops = { |
518 | .is_enabled = regulator_is_enabled_regmap, |
519 | .list_voltage = bd957x_vout34_list_voltage, |
520 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
521 | }; |
522 | |
523 | static const struct regulator_ops bd9576_vout34_ops = { |
524 | .is_enabled = regulator_is_enabled_regmap, |
525 | .list_voltage = bd957x_vout34_list_voltage, |
526 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
527 | .set_over_voltage_protection = bd9576_set_ovp, |
528 | .set_under_voltage_protection = bd9576_set_uvp, |
529 | .set_thermal_protection = bd9576_set_tw, |
530 | }; |
531 | |
532 | static const struct regulator_ops bd9573_vouts1_regulator_ops = { |
533 | .is_enabled = regulator_is_enabled_regmap, |
534 | }; |
535 | |
536 | static const struct regulator_ops bd9576_vouts1_regulator_ops = { |
537 | .is_enabled = regulator_is_enabled_regmap, |
538 | .set_over_current_protection = bd9576_set_ocp, |
539 | }; |
540 | |
541 | static const struct regulator_ops bd9573_ops = { |
542 | .is_enabled = regulator_is_enabled_regmap, |
543 | .list_voltage = bd957x_list_voltage, |
544 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
545 | }; |
546 | |
547 | static const struct regulator_ops bd9576_ops = { |
548 | .is_enabled = regulator_is_enabled_regmap, |
549 | .list_voltage = bd957x_list_voltage, |
550 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
551 | .set_over_voltage_protection = bd9576_set_ovp, |
552 | .set_under_voltage_protection = bd9576_set_uvp, |
553 | .set_thermal_protection = bd9576_set_tw, |
554 | }; |
555 | |
556 | static const struct regulator_ops *bd9573_ops_arr[] = { |
557 | [BD957X_VD50] = &bd9573_ops, |
558 | [BD957X_VD18] = &bd9573_ops, |
559 | [BD957X_VDDDR] = &bd9573_vout34_ops, |
560 | [BD957X_VD10] = &bd9573_vout34_ops, |
561 | [BD957X_VOUTL1] = &bd9573_ops, |
562 | [BD957X_VOUTS1] = &bd9573_vouts1_regulator_ops, |
563 | }; |
564 | |
565 | static const struct regulator_ops *bd9576_ops_arr[] = { |
566 | [BD957X_VD50] = &bd9576_ops, |
567 | [BD957X_VD18] = &bd9576_ops, |
568 | [BD957X_VDDDR] = &bd9576_vout34_ops, |
569 | [BD957X_VD10] = &bd9576_vout34_ops, |
570 | [BD957X_VOUTL1] = &bd9576_ops, |
571 | [BD957X_VOUTS1] = &bd9576_vouts1_regulator_ops, |
572 | }; |
573 | |
574 | static int vouts1_get_fet_res(struct device_node *np, |
575 | const struct regulator_desc *desc, |
576 | struct regulator_config *cfg) |
577 | { |
578 | struct bd957x_regulator_data *data; |
579 | int ret; |
580 | u32 uohms; |
581 | |
582 | data = container_of(desc, struct bd957x_regulator_data, desc); |
583 | |
584 | ret = of_property_read_u32(np, propname: "rohm,ocw-fet-ron-micro-ohms" , out_value: &uohms); |
585 | if (ret) { |
586 | if (ret != -EINVAL) |
587 | return ret; |
588 | |
589 | return 0; |
590 | } |
591 | data->ocw_rfet = uohms; |
592 | return 0; |
593 | } |
594 | |
595 | static struct bd957x_data bd957x_regulators = { |
596 | .regulator_data = { |
597 | { |
598 | .desc = { |
599 | .name = "VD50" , |
600 | .of_match = of_match_ptr("regulator-vd50" ), |
601 | .regulators_node = of_match_ptr("regulators" ), |
602 | .id = BD957X_VD50, |
603 | .type = REGULATOR_VOLTAGE, |
604 | .volt_table = &vout1_volt_table[0], |
605 | .n_voltages = ARRAY_SIZE(vout1_volt_table), |
606 | .vsel_reg = BD957X_REG_VOUT1_TUNE, |
607 | .vsel_mask = BD957X_MASK_VOUT1_TUNE, |
608 | .enable_reg = BD957X_REG_POW_TRIGGER1, |
609 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
610 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
611 | .enable_is_inverted = true, |
612 | .owner = THIS_MODULE, |
613 | }, |
614 | .xvd_ranges = vout1_xvd_ranges, |
615 | .num_xvd_ranges = ARRAY_SIZE(vout1_xvd_ranges), |
616 | .ovd_reg = BD9576_REG_VOUT1_OVD, |
617 | .uvd_reg = BD9576_REG_VOUT1_UVD, |
618 | .xvd_mask = BD9576_MASK_XVD, |
619 | }, |
620 | { |
621 | .desc = { |
622 | .name = "VD18" , |
623 | .of_match = of_match_ptr("regulator-vd18" ), |
624 | .regulators_node = of_match_ptr("regulators" ), |
625 | .id = BD957X_VD18, |
626 | .type = REGULATOR_VOLTAGE, |
627 | .volt_table = &vout2_volt_table[0], |
628 | .n_voltages = ARRAY_SIZE(vout2_volt_table), |
629 | .vsel_reg = BD957X_REG_VOUT2_TUNE, |
630 | .vsel_mask = BD957X_MASK_VOUT2_TUNE, |
631 | .enable_reg = BD957X_REG_POW_TRIGGER2, |
632 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
633 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
634 | .enable_is_inverted = true, |
635 | .owner = THIS_MODULE, |
636 | }, |
637 | .xvd_ranges = vout234_xvd_ranges, |
638 | .num_xvd_ranges = ARRAY_SIZE(vout234_xvd_ranges), |
639 | .ovd_reg = BD9576_REG_VOUT2_OVD, |
640 | .uvd_reg = BD9576_REG_VOUT2_UVD, |
641 | .xvd_mask = BD9576_MASK_XVD, |
642 | }, |
643 | { |
644 | .desc = { |
645 | .name = "VDDDR" , |
646 | .of_match = of_match_ptr("regulator-vdddr" ), |
647 | .regulators_node = of_match_ptr("regulators" ), |
648 | .id = BD957X_VDDDR, |
649 | .type = REGULATOR_VOLTAGE, |
650 | .n_voltages = BD957X_VOUTS34_NUM_VOLT, |
651 | .vsel_reg = BD957X_REG_VOUT3_TUNE, |
652 | .vsel_mask = BD957X_MASK_VOUT3_TUNE, |
653 | .enable_reg = BD957X_REG_POW_TRIGGER3, |
654 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
655 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
656 | .enable_is_inverted = true, |
657 | .owner = THIS_MODULE, |
658 | }, |
659 | .ovd_reg = BD9576_REG_VOUT3_OVD, |
660 | .uvd_reg = BD9576_REG_VOUT3_UVD, |
661 | .xvd_mask = BD9576_MASK_XVD, |
662 | .xvd_ranges = vout234_xvd_ranges, |
663 | .num_xvd_ranges = ARRAY_SIZE(vout234_xvd_ranges), |
664 | }, |
665 | { |
666 | .desc = { |
667 | .name = "VD10" , |
668 | .of_match = of_match_ptr("regulator-vd10" ), |
669 | .regulators_node = of_match_ptr("regulators" ), |
670 | .id = BD957X_VD10, |
671 | .type = REGULATOR_VOLTAGE, |
672 | .fixed_uV = BD957X_VOUTS4_BASE_VOLT, |
673 | .n_voltages = BD957X_VOUTS34_NUM_VOLT, |
674 | .vsel_reg = BD957X_REG_VOUT4_TUNE, |
675 | .vsel_mask = BD957X_MASK_VOUT4_TUNE, |
676 | .enable_reg = BD957X_REG_POW_TRIGGER4, |
677 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
678 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
679 | .enable_is_inverted = true, |
680 | .owner = THIS_MODULE, |
681 | }, |
682 | .xvd_ranges = vout234_xvd_ranges, |
683 | .num_xvd_ranges = ARRAY_SIZE(vout234_xvd_ranges), |
684 | .ovd_reg = BD9576_REG_VOUT4_OVD, |
685 | .uvd_reg = BD9576_REG_VOUT4_UVD, |
686 | .xvd_mask = BD9576_MASK_XVD, |
687 | }, |
688 | { |
689 | .desc = { |
690 | .name = "VOUTL1" , |
691 | .of_match = of_match_ptr("regulator-voutl1" ), |
692 | .regulators_node = of_match_ptr("regulators" ), |
693 | .id = BD957X_VOUTL1, |
694 | .type = REGULATOR_VOLTAGE, |
695 | .volt_table = &voutl1_volt_table[0], |
696 | .n_voltages = ARRAY_SIZE(voutl1_volt_table), |
697 | .vsel_reg = BD957X_REG_VOUTL1_TUNE, |
698 | .vsel_mask = BD957X_MASK_VOUTL1_TUNE, |
699 | .enable_reg = BD957X_REG_POW_TRIGGERL1, |
700 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
701 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
702 | .enable_is_inverted = true, |
703 | .owner = THIS_MODULE, |
704 | }, |
705 | .xvd_ranges = voutL1_xvd_ranges, |
706 | .num_xvd_ranges = ARRAY_SIZE(voutL1_xvd_ranges), |
707 | .ovd_reg = BD9576_REG_VOUTL1_OVD, |
708 | .uvd_reg = BD9576_REG_VOUTL1_UVD, |
709 | .xvd_mask = BD9576_MASK_XVD, |
710 | }, |
711 | { |
712 | .desc = { |
713 | .name = "VOUTS1" , |
714 | .of_match = of_match_ptr("regulator-vouts1" ), |
715 | .regulators_node = of_match_ptr("regulators" ), |
716 | .id = BD957X_VOUTS1, |
717 | .type = REGULATOR_VOLTAGE, |
718 | .n_voltages = 1, |
719 | .fixed_uV = BD957X_VOUTS1_VOLT, |
720 | .enable_reg = BD957X_REG_POW_TRIGGERS1, |
721 | .enable_mask = BD957X_REGULATOR_EN_MASK, |
722 | .enable_val = BD957X_REGULATOR_DIS_VAL, |
723 | .enable_is_inverted = true, |
724 | .owner = THIS_MODULE, |
725 | .of_parse_cb = vouts1_get_fet_res, |
726 | }, |
727 | .oc_supported = true, |
728 | .ocw_reg = BD9576_REG_VOUT1S_OCW, |
729 | .ocw_mask = BD9576_MASK_VOUT1S_OCW, |
730 | .ocp_reg = BD9576_REG_VOUT1S_OCP, |
731 | .ocp_mask = BD9576_MASK_VOUT1S_OCP, |
732 | }, |
733 | }, |
734 | }; |
735 | |
736 | static int bd9576_renable(struct regulator_irq_data *rid, int reg, int mask) |
737 | { |
738 | int val, ret; |
739 | struct bd957x_data *d = (struct bd957x_data *)rid->data; |
740 | |
741 | ret = regmap_read(map: d->regmap, reg, val: &val); |
742 | if (ret) |
743 | return REGULATOR_FAILED_RETRY; |
744 | |
745 | if (rid->opaque && rid->opaque == (val & mask)) { |
746 | /* |
747 | * It seems we stil have same status. Ack and return |
748 | * information that we are still out of limits and core |
749 | * should not enable IRQ |
750 | */ |
751 | regmap_write(map: d->regmap, reg, val: mask & val); |
752 | return REGULATOR_ERROR_ON; |
753 | } |
754 | rid->opaque = 0; |
755 | /* |
756 | * Status was changed. Either prolem was solved or we have new issues. |
757 | * Let's re-enable IRQs and be prepared to report problems again |
758 | */ |
759 | return REGULATOR_ERROR_CLEARED; |
760 | } |
761 | |
762 | static int bd9576_uvd_renable(struct regulator_irq_data *rid) |
763 | { |
764 | return bd9576_renable(rid, BD957X_REG_INT_UVD_STAT, UVD_IRQ_VALID_MASK); |
765 | } |
766 | |
767 | static int bd9576_ovd_renable(struct regulator_irq_data *rid) |
768 | { |
769 | return bd9576_renable(rid, BD957X_REG_INT_OVD_STAT, OVD_IRQ_VALID_MASK); |
770 | } |
771 | |
772 | static int bd9576_temp_renable(struct regulator_irq_data *rid) |
773 | { |
774 | return bd9576_renable(rid, BD957X_REG_INT_THERM_STAT, |
775 | BD9576_THERM_IRQ_MASK_TW); |
776 | } |
777 | |
778 | static int bd9576_uvd_handler(int irq, struct regulator_irq_data *rid, |
779 | unsigned long *dev_mask) |
780 | { |
781 | int val, ret, i; |
782 | struct bd957x_data *d = (struct bd957x_data *)rid->data; |
783 | |
784 | ret = regmap_read(map: d->regmap, BD957X_REG_INT_UVD_STAT, val: &val); |
785 | if (ret) |
786 | return REGULATOR_FAILED_RETRY; |
787 | |
788 | *dev_mask = 0; |
789 | |
790 | rid->opaque = val & UVD_IRQ_VALID_MASK; |
791 | |
792 | /* |
793 | * Go through the set status bits and report either error or warning |
794 | * to the notifier depending on what was flagged in DT |
795 | */ |
796 | *dev_mask = val & BD9576_xVD_IRQ_MASK_VOUT1TO4; |
797 | /* There is 1 bit gap in register after Vout1 .. Vout4 statuses */ |
798 | *dev_mask |= ((val & BD9576_xVD_IRQ_MASK_VOUTL1) >> 1); |
799 | /* |
800 | * We (ab)use the uvd for OCW notification. DT parsing should |
801 | * have added correct OCW flag to uvd_notif and uvd_err for S1 |
802 | */ |
803 | *dev_mask |= ((val & BD9576_UVD_IRQ_MASK_VOUTS1_OCW) >> 1); |
804 | |
805 | for_each_set_bit(i, dev_mask, 6) { |
806 | struct bd957x_regulator_data *rdata; |
807 | struct regulator_err_state *stat; |
808 | |
809 | rdata = &d->regulator_data[i]; |
810 | stat = &rid->states[i]; |
811 | |
812 | stat->notifs = rdata->uvd_notif; |
813 | stat->errors = rdata->uvd_err; |
814 | } |
815 | |
816 | ret = regmap_write(map: d->regmap, BD957X_REG_INT_UVD_STAT, |
817 | UVD_IRQ_VALID_MASK & val); |
818 | |
819 | return 0; |
820 | } |
821 | |
822 | static int bd9576_ovd_handler(int irq, struct regulator_irq_data *rid, |
823 | unsigned long *dev_mask) |
824 | { |
825 | int val, ret, i; |
826 | struct bd957x_data *d = (struct bd957x_data *)rid->data; |
827 | |
828 | ret = regmap_read(map: d->regmap, BD957X_REG_INT_OVD_STAT, val: &val); |
829 | if (ret) |
830 | return REGULATOR_FAILED_RETRY; |
831 | |
832 | rid->opaque = val & OVD_IRQ_VALID_MASK; |
833 | *dev_mask = 0; |
834 | |
835 | if (!(val & OVD_IRQ_VALID_MASK)) |
836 | return 0; |
837 | |
838 | *dev_mask = val & BD9576_xVD_IRQ_MASK_VOUT1TO4; |
839 | /* There is 1 bit gap in register after Vout1 .. Vout4 statuses */ |
840 | *dev_mask |= ((val & BD9576_xVD_IRQ_MASK_VOUTL1) >> 1); |
841 | |
842 | for_each_set_bit(i, dev_mask, 5) { |
843 | struct bd957x_regulator_data *rdata; |
844 | struct regulator_err_state *stat; |
845 | |
846 | rdata = &d->regulator_data[i]; |
847 | stat = &rid->states[i]; |
848 | |
849 | stat->notifs = rdata->ovd_notif; |
850 | stat->errors = rdata->ovd_err; |
851 | } |
852 | |
853 | /* Clear the sub-IRQ status */ |
854 | regmap_write(map: d->regmap, BD957X_REG_INT_OVD_STAT, |
855 | OVD_IRQ_VALID_MASK & val); |
856 | |
857 | return 0; |
858 | } |
859 | |
860 | #define BD9576_DEV_MASK_ALL_REGULATORS 0x3F |
861 | |
862 | static int bd9576_thermal_handler(int irq, struct regulator_irq_data *rid, |
863 | unsigned long *dev_mask) |
864 | { |
865 | int val, ret, i; |
866 | struct bd957x_data *d = (struct bd957x_data *)rid->data; |
867 | |
868 | ret = regmap_read(map: d->regmap, BD957X_REG_INT_THERM_STAT, val: &val); |
869 | if (ret) |
870 | return REGULATOR_FAILED_RETRY; |
871 | |
872 | if (!(val & BD9576_THERM_IRQ_MASK_TW)) { |
873 | *dev_mask = 0; |
874 | return 0; |
875 | } |
876 | |
877 | *dev_mask = BD9576_DEV_MASK_ALL_REGULATORS; |
878 | |
879 | for (i = 0; i < BD9576_NUM_REGULATORS; i++) { |
880 | struct bd957x_regulator_data *rdata; |
881 | struct regulator_err_state *stat; |
882 | |
883 | rdata = &d->regulator_data[i]; |
884 | stat = &rid->states[i]; |
885 | |
886 | stat->notifs = rdata->temp_notif; |
887 | stat->errors = rdata->temp_err; |
888 | } |
889 | |
890 | /* Clear the sub-IRQ status */ |
891 | regmap_write(map: d->regmap, BD957X_REG_INT_THERM_STAT, |
892 | BD9576_THERM_IRQ_MASK_TW); |
893 | |
894 | return 0; |
895 | } |
896 | |
897 | static int bd957x_probe(struct platform_device *pdev) |
898 | { |
899 | int i; |
900 | unsigned int num_reg_data; |
901 | bool vout_mode, ddr_sel, may_have_irqs = false; |
902 | struct regmap *regmap; |
903 | struct bd957x_data *ic_data; |
904 | struct regulator_config config = { 0 }; |
905 | /* All regulators are related to UVD and thermal IRQs... */ |
906 | struct regulator_dev *rdevs[BD9576_NUM_REGULATORS]; |
907 | /* ...But VoutS1 is not flagged by OVD IRQ */ |
908 | struct regulator_dev *ovd_devs[BD9576_NUM_OVD_REGULATORS]; |
909 | static const struct regulator_irq_desc bd9576_notif_uvd = { |
910 | .name = "bd9576-uvd" , |
911 | .irq_off_ms = 1000, |
912 | .map_event = bd9576_uvd_handler, |
913 | .renable = bd9576_uvd_renable, |
914 | .data = &bd957x_regulators, |
915 | }; |
916 | static const struct regulator_irq_desc bd9576_notif_ovd = { |
917 | .name = "bd9576-ovd" , |
918 | .irq_off_ms = 1000, |
919 | .map_event = bd9576_ovd_handler, |
920 | .renable = bd9576_ovd_renable, |
921 | .data = &bd957x_regulators, |
922 | }; |
923 | static const struct regulator_irq_desc bd9576_notif_temp = { |
924 | .name = "bd9576-temp" , |
925 | .irq_off_ms = 1000, |
926 | .map_event = bd9576_thermal_handler, |
927 | .renable = bd9576_temp_renable, |
928 | .data = &bd957x_regulators, |
929 | }; |
930 | enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data; |
931 | |
932 | num_reg_data = ARRAY_SIZE(bd957x_regulators.regulator_data); |
933 | |
934 | ic_data = &bd957x_regulators; |
935 | |
936 | regmap = dev_get_regmap(dev: pdev->dev.parent, NULL); |
937 | if (!regmap) { |
938 | dev_err(&pdev->dev, "No regmap\n" ); |
939 | return -EINVAL; |
940 | } |
941 | |
942 | ic_data->regmap = regmap; |
943 | vout_mode = device_property_read_bool(dev: pdev->dev.parent, |
944 | propname: "rohm,vout1-en-low" ); |
945 | if (vout_mode) { |
946 | struct gpio_desc *en; |
947 | |
948 | dev_dbg(&pdev->dev, "GPIO controlled mode\n" ); |
949 | |
950 | /* VOUT1 enable state judged by VOUT1_EN pin */ |
951 | /* See if we have GPIO defined */ |
952 | en = devm_fwnode_gpiod_get(dev: &pdev->dev, |
953 | dev_fwnode(pdev->dev.parent), |
954 | con_id: "rohm,vout1-en" , flags: GPIOD_OUT_LOW, |
955 | label: "vout1-en" ); |
956 | |
957 | /* VOUT1_OPS gpio ctrl */ |
958 | /* |
959 | * Regulator core prioritizes the ena_gpio over |
960 | * enable/disable/is_enabled callbacks so no need to clear them |
961 | * even if GPIO is used. So, we can still use same ops. |
962 | * |
963 | * In theory it is possible someone wants to set vout1-en LOW |
964 | * during OTP loading and set VOUT1 to be controlled by GPIO - |
965 | * but control the GPIO from some where else than this driver. |
966 | * For that to work we should unset the is_enabled callback |
967 | * here. |
968 | * |
969 | * I believe such case where rohm,vout1-en-low is set and |
970 | * vout1-en-gpios is not is likely to be a misconfiguration. |
971 | * So let's just err out for now. |
972 | */ |
973 | if (!IS_ERR(ptr: en)) |
974 | config.ena_gpiod = en; |
975 | else |
976 | return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: en), |
977 | fmt: "Failed to get VOUT1 control GPIO\n" ); |
978 | } |
979 | |
980 | /* |
981 | * If more than one PMIC needs to be controlled by same processor then |
982 | * allocate the regulator data array here and use bd9576_regulators as |
983 | * template. At the moment I see no such use-case so I spare some |
984 | * bytes and use bd9576_regulators directly for non-constant configs |
985 | * like DDR voltage selection. |
986 | */ |
987 | platform_set_drvdata(pdev, data: ic_data); |
988 | ddr_sel = device_property_read_bool(dev: pdev->dev.parent, |
989 | propname: "rohm,ddr-sel-low" ); |
990 | if (ddr_sel) |
991 | ic_data->regulator_data[2].desc.fixed_uV = 1350000; |
992 | else |
993 | ic_data->regulator_data[2].desc.fixed_uV = 1500000; |
994 | |
995 | switch (chip) { |
996 | case ROHM_CHIP_TYPE_BD9576: |
997 | may_have_irqs = true; |
998 | dev_dbg(&pdev->dev, "Found BD9576MUF\n" ); |
999 | break; |
1000 | case ROHM_CHIP_TYPE_BD9573: |
1001 | dev_dbg(&pdev->dev, "Found BD9573MUF\n" ); |
1002 | break; |
1003 | default: |
1004 | dev_err(&pdev->dev, "Unsupported chip type\n" ); |
1005 | return -EINVAL; |
1006 | } |
1007 | |
1008 | for (i = 0; i < num_reg_data; i++) { |
1009 | struct regulator_desc *d; |
1010 | |
1011 | d = &ic_data->regulator_data[i].desc; |
1012 | |
1013 | |
1014 | if (may_have_irqs) { |
1015 | if (d->id >= ARRAY_SIZE(bd9576_ops_arr)) |
1016 | return -EINVAL; |
1017 | |
1018 | d->ops = bd9576_ops_arr[d->id]; |
1019 | } else { |
1020 | if (d->id >= ARRAY_SIZE(bd9573_ops_arr)) |
1021 | return -EINVAL; |
1022 | |
1023 | d->ops = bd9573_ops_arr[d->id]; |
1024 | } |
1025 | } |
1026 | |
1027 | config.dev = pdev->dev.parent; |
1028 | config.regmap = regmap; |
1029 | config.driver_data = ic_data; |
1030 | |
1031 | for (i = 0; i < num_reg_data; i++) { |
1032 | |
1033 | struct bd957x_regulator_data *r = &ic_data->regulator_data[i]; |
1034 | const struct regulator_desc *desc = &r->desc; |
1035 | |
1036 | r->rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: desc, |
1037 | config: &config); |
1038 | if (IS_ERR(ptr: r->rdev)) |
1039 | return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: r->rdev), |
1040 | fmt: "failed to register %s regulator\n" , |
1041 | desc->name); |
1042 | /* |
1043 | * Clear the VOUT1 GPIO setting - rest of the regulators do not |
1044 | * support GPIO control |
1045 | */ |
1046 | config.ena_gpiod = NULL; |
1047 | |
1048 | if (!may_have_irqs) |
1049 | continue; |
1050 | |
1051 | rdevs[i] = r->rdev; |
1052 | if (i < BD957X_VOUTS1) |
1053 | ovd_devs[i] = r->rdev; |
1054 | } |
1055 | if (may_have_irqs) { |
1056 | void *ret; |
1057 | /* |
1058 | * We can add both the possible error and warning flags here |
1059 | * because the core uses these only for status clearing and |
1060 | * if we use warnings - errors are always clear and the other |
1061 | * way around. We can also add CURRENT flag for all regulators |
1062 | * because it is never set if it is not supported. Same applies |
1063 | * to setting UVD for VoutS1 - it is not accidentally cleared |
1064 | * as it is never set. |
1065 | */ |
1066 | int uvd_errs = REGULATOR_ERROR_UNDER_VOLTAGE | |
1067 | REGULATOR_ERROR_UNDER_VOLTAGE_WARN | |
1068 | REGULATOR_ERROR_OVER_CURRENT | |
1069 | REGULATOR_ERROR_OVER_CURRENT_WARN; |
1070 | int ovd_errs = REGULATOR_ERROR_OVER_VOLTAGE_WARN | |
1071 | REGULATOR_ERROR_REGULATION_OUT; |
1072 | int temp_errs = REGULATOR_ERROR_OVER_TEMP | |
1073 | REGULATOR_ERROR_OVER_TEMP_WARN; |
1074 | int irq; |
1075 | |
1076 | irq = platform_get_irq_byname(pdev, "bd9576-uvd" ); |
1077 | |
1078 | /* Register notifiers - can fail if IRQ is not given */ |
1079 | ret = devm_regulator_irq_helper(dev: &pdev->dev, d: &bd9576_notif_uvd, |
1080 | irq, irq_flags: 0, common_errs: uvd_errs, NULL, |
1081 | rdev: &rdevs[0], |
1082 | BD9576_NUM_REGULATORS); |
1083 | if (IS_ERR(ptr: ret)) { |
1084 | if (PTR_ERR(ptr: ret) == -EPROBE_DEFER) |
1085 | return -EPROBE_DEFER; |
1086 | |
1087 | dev_warn(&pdev->dev, "UVD disabled %pe\n" , ret); |
1088 | } |
1089 | |
1090 | irq = platform_get_irq_byname(pdev, "bd9576-ovd" ); |
1091 | |
1092 | ret = devm_regulator_irq_helper(dev: &pdev->dev, d: &bd9576_notif_ovd, |
1093 | irq, irq_flags: 0, common_errs: ovd_errs, NULL, |
1094 | rdev: &ovd_devs[0], |
1095 | BD9576_NUM_OVD_REGULATORS); |
1096 | if (IS_ERR(ptr: ret)) { |
1097 | if (PTR_ERR(ptr: ret) == -EPROBE_DEFER) |
1098 | return -EPROBE_DEFER; |
1099 | |
1100 | dev_warn(&pdev->dev, "OVD disabled %pe\n" , ret); |
1101 | } |
1102 | irq = platform_get_irq_byname(pdev, "bd9576-temp" ); |
1103 | |
1104 | ret = devm_regulator_irq_helper(dev: &pdev->dev, d: &bd9576_notif_temp, |
1105 | irq, irq_flags: 0, common_errs: temp_errs, NULL, |
1106 | rdev: &rdevs[0], |
1107 | BD9576_NUM_REGULATORS); |
1108 | if (IS_ERR(ptr: ret)) { |
1109 | if (PTR_ERR(ptr: ret) == -EPROBE_DEFER) |
1110 | return -EPROBE_DEFER; |
1111 | |
1112 | dev_warn(&pdev->dev, "Thermal warning disabled %pe\n" , |
1113 | ret); |
1114 | } |
1115 | } |
1116 | return 0; |
1117 | } |
1118 | |
1119 | static const struct platform_device_id bd957x_pmic_id[] = { |
1120 | { "bd9573-regulator" , ROHM_CHIP_TYPE_BD9573 }, |
1121 | { "bd9576-regulator" , ROHM_CHIP_TYPE_BD9576 }, |
1122 | { }, |
1123 | }; |
1124 | MODULE_DEVICE_TABLE(platform, bd957x_pmic_id); |
1125 | |
1126 | static struct platform_driver bd957x_regulator = { |
1127 | .driver = { |
1128 | .name = "bd957x-pmic" , |
1129 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
1130 | }, |
1131 | .probe = bd957x_probe, |
1132 | .id_table = bd957x_pmic_id, |
1133 | }; |
1134 | |
1135 | module_platform_driver(bd957x_regulator); |
1136 | |
1137 | MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>" ); |
1138 | MODULE_DESCRIPTION("ROHM BD9576/BD9573 voltage regulator driver" ); |
1139 | MODULE_LICENSE("GPL" ); |
1140 | MODULE_ALIAS("platform:bd957x-pmic" ); |
1141 | |