1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * AXP20x PMIC USB power supply status driver
4 *
5 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2014 Bruno Prémont <bonbons@linux-vserver.org>
7 */
8
9 #include <linux/bitops.h>
10 #include <linux/device.h>
11 #include <linux/devm-helpers.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/kernel.h>
15 #include <linux/mfd/axp20x.h>
16 #include <linux/module.h>
17 #include <linux/of.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm.h>
20 #include <linux/power_supply.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.h>
23 #include <linux/iio/consumer.h>
24 #include <linux/workqueue.h>
25
26 #define DRVNAME "axp20x-usb-power-supply"
27
28 #define AXP192_USB_OTG_STATUS 0x04
29
30 #define AXP20X_PWR_STATUS_VBUS_PRESENT BIT(5)
31 #define AXP20X_PWR_STATUS_VBUS_USED BIT(4)
32
33 #define AXP20X_USB_STATUS_VBUS_VALID BIT(2)
34
35 #define AXP20X_VBUS_VHOLD_uV(b) (4000000 + (((b) >> 3) & 7) * 100000)
36 #define AXP20X_VBUS_VHOLD_MASK GENMASK(5, 3)
37 #define AXP20X_VBUS_VHOLD_OFFSET 3
38
39 #define AXP20X_ADC_EN1_VBUS_CURR BIT(2)
40 #define AXP20X_ADC_EN1_VBUS_VOLT BIT(3)
41
42 /*
43 * Note do not raise the debounce time, we must report Vusb high within
44 * 100ms otherwise we get Vbus errors in musb.
45 */
46 #define DEBOUNCE_TIME msecs_to_jiffies(50)
47
48 struct axp_data {
49 const struct power_supply_desc *power_desc;
50 const char * const *irq_names;
51 unsigned int num_irq_names;
52 const int *curr_lim_table;
53 struct reg_field curr_lim_fld;
54 struct reg_field vbus_valid_bit;
55 struct reg_field vbus_mon_bit;
56 struct reg_field usb_bc_en_bit;
57 struct reg_field vbus_disable_bit;
58 bool vbus_needs_polling: 1;
59 };
60
61 struct axp20x_usb_power {
62 struct regmap *regmap;
63 struct regmap_field *curr_lim_fld;
64 struct regmap_field *vbus_valid_bit;
65 struct regmap_field *vbus_mon_bit;
66 struct regmap_field *usb_bc_en_bit;
67 struct regmap_field *vbus_disable_bit;
68 struct power_supply *supply;
69 const struct axp_data *axp_data;
70 struct iio_channel *vbus_v;
71 struct iio_channel *vbus_i;
72 struct delayed_work vbus_detect;
73 unsigned int old_status;
74 unsigned int online;
75 unsigned int num_irqs;
76 unsigned int irqs[];
77 };
78
axp20x_usb_vbus_needs_polling(struct axp20x_usb_power * power)79 static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power)
80 {
81 /*
82 * Polling is only necessary while VBUS is offline. While online, a
83 * present->absent transition implies an online->offline transition
84 * and will trigger the VBUS_REMOVAL IRQ.
85 */
86 if (power->axp_data->vbus_needs_polling && !power->online)
87 return true;
88
89 return false;
90 }
91
axp20x_usb_power_irq(int irq,void * devid)92 static irqreturn_t axp20x_usb_power_irq(int irq, void *devid)
93 {
94 struct axp20x_usb_power *power = devid;
95
96 power_supply_changed(power->supply);
97
98 mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
99
100 return IRQ_HANDLED;
101 }
102
axp20x_usb_power_poll_vbus(struct work_struct * work)103 static void axp20x_usb_power_poll_vbus(struct work_struct *work)
104 {
105 struct axp20x_usb_power *power =
106 container_of(work, struct axp20x_usb_power, vbus_detect.work);
107 unsigned int val;
108 int ret;
109
110 ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &val);
111 if (ret)
112 goto out;
113
114 val &= (AXP20X_PWR_STATUS_VBUS_PRESENT | AXP20X_PWR_STATUS_VBUS_USED);
115 if (val != power->old_status)
116 power_supply_changed(power->supply);
117
118 power->old_status = val;
119 power->online = val & AXP20X_PWR_STATUS_VBUS_USED;
120
121 out:
122 if (axp20x_usb_vbus_needs_polling(power))
123 mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
124 }
125
axp20x_usb_power_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)126 static int axp20x_usb_power_get_property(struct power_supply *psy,
127 enum power_supply_property psp, union power_supply_propval *val)
128 {
129 struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
130 unsigned int input, v;
131 int ret;
132
133 switch (psp) {
134 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
135 ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
136 if (ret)
137 return ret;
138
139 val->intval = AXP20X_VBUS_VHOLD_uV(v);
140 return 0;
141 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
142 if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
143 ret = iio_read_channel_processed(power->vbus_v,
144 &val->intval);
145 if (ret)
146 return ret;
147
148 /*
149 * IIO framework gives mV but Power Supply framework
150 * gives uV.
151 */
152 val->intval *= 1000;
153 return 0;
154 }
155
156 ret = axp20x_read_variable_width(power->regmap,
157 AXP20X_VBUS_V_ADC_H, 12);
158 if (ret < 0)
159 return ret;
160
161 val->intval = ret * 1700; /* 1 step = 1.7 mV */
162 return 0;
163 case POWER_SUPPLY_PROP_CURRENT_MAX:
164 ret = regmap_field_read(power->curr_lim_fld, &v);
165 if (ret)
166 return ret;
167
168 val->intval = power->axp_data->curr_lim_table[v];
169 return 0;
170 case POWER_SUPPLY_PROP_CURRENT_NOW:
171 if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
172 ret = iio_read_channel_processed(power->vbus_i,
173 &val->intval);
174 if (ret)
175 return ret;
176
177 /*
178 * IIO framework gives mA but Power Supply framework
179 * gives uA.
180 */
181 val->intval *= 1000;
182 return 0;
183 }
184
185 ret = axp20x_read_variable_width(power->regmap,
186 AXP20X_VBUS_I_ADC_H, 12);
187 if (ret < 0)
188 return ret;
189
190 val->intval = ret * 375; /* 1 step = 0.375 mA */
191 return 0;
192 default:
193 break;
194 }
195
196 /* All the properties below need the input-status reg value */
197 ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
198 if (ret)
199 return ret;
200
201 switch (psp) {
202 case POWER_SUPPLY_PROP_HEALTH:
203 if (!(input & AXP20X_PWR_STATUS_VBUS_PRESENT)) {
204 val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
205 break;
206 }
207
208 val->intval = POWER_SUPPLY_HEALTH_GOOD;
209
210 if (power->vbus_valid_bit) {
211 ret = regmap_field_read(power->vbus_valid_bit, &v);
212 if (ret)
213 return ret;
214
215 if (v == 0)
216 val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
217 }
218
219 break;
220 case POWER_SUPPLY_PROP_PRESENT:
221 val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_PRESENT);
222 break;
223 case POWER_SUPPLY_PROP_ONLINE:
224 val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_USED);
225 break;
226 default:
227 return -EINVAL;
228 }
229
230 return 0;
231 }
232
axp20x_usb_power_set_voltage_min(struct axp20x_usb_power * power,int intval)233 static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power,
234 int intval)
235 {
236 int val;
237
238 switch (intval) {
239 case 4000000:
240 case 4100000:
241 case 4200000:
242 case 4300000:
243 case 4400000:
244 case 4500000:
245 case 4600000:
246 case 4700000:
247 val = (intval - 4000000) / 100000;
248 return regmap_update_bits(power->regmap,
249 AXP20X_VBUS_IPSOUT_MGMT,
250 AXP20X_VBUS_VHOLD_MASK,
251 val << AXP20X_VBUS_VHOLD_OFFSET);
252 default:
253 return -EINVAL;
254 }
255
256 return -EINVAL;
257 }
258
axp20x_usb_power_set_current_max(struct axp20x_usb_power * power,int intval)259 static int axp20x_usb_power_set_current_max(struct axp20x_usb_power *power, int intval)
260 {
261 const unsigned int max = GENMASK(power->axp_data->curr_lim_fld.msb,
262 power->axp_data->curr_lim_fld.lsb);
263
264 if (intval == -1)
265 return -EINVAL;
266
267 for (unsigned int i = 0; i <= max; ++i)
268 if (power->axp_data->curr_lim_table[i] == intval)
269 return regmap_field_write(power->curr_lim_fld, i);
270
271 return -EINVAL;
272 }
273
axp20x_usb_power_set_property(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)274 static int axp20x_usb_power_set_property(struct power_supply *psy,
275 enum power_supply_property psp,
276 const union power_supply_propval *val)
277 {
278 struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
279
280 switch (psp) {
281 case POWER_SUPPLY_PROP_ONLINE:
282 if (!power->vbus_disable_bit)
283 return -EINVAL;
284
285 return regmap_field_write(power->vbus_disable_bit, !val->intval);
286
287 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
288 return axp20x_usb_power_set_voltage_min(power, val->intval);
289
290 case POWER_SUPPLY_PROP_CURRENT_MAX:
291 return axp20x_usb_power_set_current_max(power, val->intval);
292
293 default:
294 return -EINVAL;
295 }
296
297 return -EINVAL;
298 }
299
axp20x_usb_power_prop_writeable(struct power_supply * psy,enum power_supply_property psp)300 static int axp20x_usb_power_prop_writeable(struct power_supply *psy,
301 enum power_supply_property psp)
302 {
303 struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
304
305 /*
306 * The VBUS path select flag works differently on AXP288 and newer:
307 * - On AXP20x and AXP22x, the flag enables VBUS (ignoring N_VBUSEN).
308 * - On AXP288 and AXP8xx, the flag disables VBUS (ignoring N_VBUSEN).
309 * We only expose the control on variants where it can be used to force
310 * the VBUS input offline.
311 */
312 if (psp == POWER_SUPPLY_PROP_ONLINE)
313 return power->vbus_disable_bit != NULL;
314
315 return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
316 psp == POWER_SUPPLY_PROP_CURRENT_MAX;
317 }
318
319 static enum power_supply_property axp20x_usb_power_properties[] = {
320 POWER_SUPPLY_PROP_HEALTH,
321 POWER_SUPPLY_PROP_PRESENT,
322 POWER_SUPPLY_PROP_ONLINE,
323 POWER_SUPPLY_PROP_VOLTAGE_MIN,
324 POWER_SUPPLY_PROP_VOLTAGE_NOW,
325 POWER_SUPPLY_PROP_CURRENT_MAX,
326 POWER_SUPPLY_PROP_CURRENT_NOW,
327 };
328
329 static enum power_supply_property axp22x_usb_power_properties[] = {
330 POWER_SUPPLY_PROP_HEALTH,
331 POWER_SUPPLY_PROP_PRESENT,
332 POWER_SUPPLY_PROP_ONLINE,
333 POWER_SUPPLY_PROP_VOLTAGE_MIN,
334 POWER_SUPPLY_PROP_CURRENT_MAX,
335 };
336
337 static const struct power_supply_desc axp20x_usb_power_desc = {
338 .name = "axp20x-usb",
339 .type = POWER_SUPPLY_TYPE_USB,
340 .properties = axp20x_usb_power_properties,
341 .num_properties = ARRAY_SIZE(axp20x_usb_power_properties),
342 .property_is_writeable = axp20x_usb_power_prop_writeable,
343 .get_property = axp20x_usb_power_get_property,
344 .set_property = axp20x_usb_power_set_property,
345 };
346
347 static const struct power_supply_desc axp22x_usb_power_desc = {
348 .name = "axp20x-usb",
349 .type = POWER_SUPPLY_TYPE_USB,
350 .properties = axp22x_usb_power_properties,
351 .num_properties = ARRAY_SIZE(axp22x_usb_power_properties),
352 .property_is_writeable = axp20x_usb_power_prop_writeable,
353 .get_property = axp20x_usb_power_get_property,
354 .set_property = axp20x_usb_power_set_property,
355 };
356
357 static const char * const axp20x_irq_names[] = {
358 "VBUS_PLUGIN",
359 "VBUS_REMOVAL",
360 "VBUS_VALID",
361 "VBUS_NOT_VALID",
362 };
363
364 static const char * const axp22x_irq_names[] = {
365 "VBUS_PLUGIN",
366 "VBUS_REMOVAL",
367 };
368
369 static int axp192_usb_curr_lim_table[] = {
370 -1,
371 -1,
372 500000,
373 100000,
374 };
375
376 static int axp20x_usb_curr_lim_table[] = {
377 900000,
378 500000,
379 100000,
380 -1,
381 };
382
383 static int axp221_usb_curr_lim_table[] = {
384 900000,
385 500000,
386 -1,
387 -1,
388 };
389
390 static int axp813_usb_curr_lim_table[] = {
391 900000,
392 1500000,
393 2000000,
394 2500000,
395 };
396
397 static const struct axp_data axp192_data = {
398 .power_desc = &axp20x_usb_power_desc,
399 .irq_names = axp20x_irq_names,
400 .num_irq_names = ARRAY_SIZE(axp20x_irq_names),
401 .curr_lim_table = axp192_usb_curr_lim_table,
402 .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
403 .vbus_valid_bit = REG_FIELD(AXP192_USB_OTG_STATUS, 2, 2),
404 .vbus_mon_bit = REG_FIELD(AXP20X_VBUS_MON, 3, 3),
405 };
406
407 static const struct axp_data axp202_data = {
408 .power_desc = &axp20x_usb_power_desc,
409 .irq_names = axp20x_irq_names,
410 .num_irq_names = ARRAY_SIZE(axp20x_irq_names),
411 .curr_lim_table = axp20x_usb_curr_lim_table,
412 .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
413 .vbus_valid_bit = REG_FIELD(AXP20X_USB_OTG_STATUS, 2, 2),
414 .vbus_mon_bit = REG_FIELD(AXP20X_VBUS_MON, 3, 3),
415 };
416
417 static const struct axp_data axp221_data = {
418 .power_desc = &axp22x_usb_power_desc,
419 .irq_names = axp22x_irq_names,
420 .num_irq_names = ARRAY_SIZE(axp22x_irq_names),
421 .curr_lim_table = axp221_usb_curr_lim_table,
422 .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
423 .vbus_needs_polling = true,
424 };
425
426 static const struct axp_data axp223_data = {
427 .power_desc = &axp22x_usb_power_desc,
428 .irq_names = axp22x_irq_names,
429 .num_irq_names = ARRAY_SIZE(axp22x_irq_names),
430 .curr_lim_table = axp20x_usb_curr_lim_table,
431 .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
432 .vbus_needs_polling = true,
433 };
434
435 static const struct axp_data axp813_data = {
436 .power_desc = &axp22x_usb_power_desc,
437 .irq_names = axp22x_irq_names,
438 .num_irq_names = ARRAY_SIZE(axp22x_irq_names),
439 .curr_lim_table = axp813_usb_curr_lim_table,
440 .curr_lim_fld = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
441 .usb_bc_en_bit = REG_FIELD(AXP288_BC_GLOBAL, 0, 0),
442 .vbus_disable_bit = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 7, 7),
443 .vbus_needs_polling = true,
444 };
445
446 #ifdef CONFIG_PM_SLEEP
axp20x_usb_power_suspend(struct device * dev)447 static int axp20x_usb_power_suspend(struct device *dev)
448 {
449 struct axp20x_usb_power *power = dev_get_drvdata(dev);
450 int i = 0;
451
452 /*
453 * Allow wake via VBUS_PLUGIN only.
454 *
455 * As nested threaded IRQs are not automatically disabled during
456 * suspend, we must explicitly disable the remainder of the IRQs.
457 */
458 if (device_may_wakeup(&power->supply->dev))
459 enable_irq_wake(power->irqs[i++]);
460 while (i < power->num_irqs)
461 disable_irq(power->irqs[i++]);
462
463 return 0;
464 }
465
axp20x_usb_power_resume(struct device * dev)466 static int axp20x_usb_power_resume(struct device *dev)
467 {
468 struct axp20x_usb_power *power = dev_get_drvdata(dev);
469 int i = 0;
470
471 if (device_may_wakeup(&power->supply->dev))
472 disable_irq_wake(power->irqs[i++]);
473 while (i < power->num_irqs)
474 enable_irq(power->irqs[i++]);
475
476 mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
477
478 return 0;
479 }
480 #endif
481
482 static SIMPLE_DEV_PM_OPS(axp20x_usb_power_pm_ops, axp20x_usb_power_suspend,
483 axp20x_usb_power_resume);
484
configure_iio_channels(struct platform_device * pdev,struct axp20x_usb_power * power)485 static int configure_iio_channels(struct platform_device *pdev,
486 struct axp20x_usb_power *power)
487 {
488 power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
489 if (IS_ERR(power->vbus_v)) {
490 if (PTR_ERR(power->vbus_v) == -ENODEV)
491 return -EPROBE_DEFER;
492 return PTR_ERR(power->vbus_v);
493 }
494
495 power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i");
496 if (IS_ERR(power->vbus_i)) {
497 if (PTR_ERR(power->vbus_i) == -ENODEV)
498 return -EPROBE_DEFER;
499 return PTR_ERR(power->vbus_i);
500 }
501
502 return 0;
503 }
504
configure_adc_registers(struct axp20x_usb_power * power)505 static int configure_adc_registers(struct axp20x_usb_power *power)
506 {
507 /* Enable vbus voltage and current measurement */
508 return regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
509 AXP20X_ADC_EN1_VBUS_CURR |
510 AXP20X_ADC_EN1_VBUS_VOLT,
511 AXP20X_ADC_EN1_VBUS_CURR |
512 AXP20X_ADC_EN1_VBUS_VOLT);
513 }
514
axp20x_regmap_field_alloc_optional(struct device * dev,struct regmap * regmap,struct reg_field fdesc,struct regmap_field ** fieldp)515 static int axp20x_regmap_field_alloc_optional(struct device *dev,
516 struct regmap *regmap,
517 struct reg_field fdesc,
518 struct regmap_field **fieldp)
519 {
520 struct regmap_field *field;
521
522 if (fdesc.reg == 0) {
523 *fieldp = NULL;
524 return 0;
525 }
526
527 field = devm_regmap_field_alloc(dev, regmap, fdesc);
528 if (IS_ERR(field))
529 return PTR_ERR(field);
530
531 *fieldp = field;
532 return 0;
533 }
534
axp20x_usb_power_probe(struct platform_device * pdev)535 static int axp20x_usb_power_probe(struct platform_device *pdev)
536 {
537 struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
538 struct power_supply_config psy_cfg = {};
539 struct axp20x_usb_power *power;
540 const struct axp_data *axp_data;
541 int i, irq, ret;
542
543 if (!of_device_is_available(pdev->dev.of_node))
544 return -ENODEV;
545
546 if (!axp20x) {
547 dev_err(&pdev->dev, "Parent drvdata not set\n");
548 return -EINVAL;
549 }
550
551 axp_data = of_device_get_match_data(&pdev->dev);
552
553 power = devm_kzalloc(&pdev->dev,
554 struct_size(power, irqs, axp_data->num_irq_names),
555 GFP_KERNEL);
556 if (!power)
557 return -ENOMEM;
558
559 platform_set_drvdata(pdev, power);
560
561 power->axp_data = axp_data;
562 power->regmap = axp20x->regmap;
563 power->num_irqs = axp_data->num_irq_names;
564
565 power->curr_lim_fld = devm_regmap_field_alloc(&pdev->dev, power->regmap,
566 axp_data->curr_lim_fld);
567 if (IS_ERR(power->curr_lim_fld))
568 return PTR_ERR(power->curr_lim_fld);
569
570 ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
571 axp_data->vbus_valid_bit,
572 &power->vbus_valid_bit);
573 if (ret)
574 return ret;
575
576 ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
577 axp_data->vbus_mon_bit,
578 &power->vbus_mon_bit);
579 if (ret)
580 return ret;
581
582 ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
583 axp_data->usb_bc_en_bit,
584 &power->usb_bc_en_bit);
585 if (ret)
586 return ret;
587
588 ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
589 axp_data->vbus_disable_bit,
590 &power->vbus_disable_bit);
591 if (ret)
592 return ret;
593
594 ret = devm_delayed_work_autocancel(&pdev->dev, &power->vbus_detect,
595 axp20x_usb_power_poll_vbus);
596 if (ret)
597 return ret;
598
599 if (power->vbus_mon_bit) {
600 /* Enable vbus valid checking */
601 ret = regmap_field_write(power->vbus_mon_bit, 1);
602 if (ret)
603 return ret;
604
605 if (IS_ENABLED(CONFIG_AXP20X_ADC))
606 ret = configure_iio_channels(pdev, power);
607 else
608 ret = configure_adc_registers(power);
609
610 if (ret)
611 return ret;
612 }
613
614 if (power->usb_bc_en_bit) {
615 /* Enable USB Battery Charging specification detection */
616 ret = regmap_field_write(power->usb_bc_en_bit, 1);
617 if (ret)
618 return ret;
619 }
620
621 psy_cfg.of_node = pdev->dev.of_node;
622 psy_cfg.drv_data = power;
623
624 power->supply = devm_power_supply_register(&pdev->dev,
625 axp_data->power_desc,
626 &psy_cfg);
627 if (IS_ERR(power->supply))
628 return PTR_ERR(power->supply);
629
630 /* Request irqs after registering, as irqs may trigger immediately */
631 for (i = 0; i < axp_data->num_irq_names; i++) {
632 irq = platform_get_irq_byname(pdev, axp_data->irq_names[i]);
633 if (irq < 0)
634 return irq;
635
636 power->irqs[i] = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
637 ret = devm_request_any_context_irq(&pdev->dev, power->irqs[i],
638 axp20x_usb_power_irq, 0,
639 DRVNAME, power);
640 if (ret < 0) {
641 dev_err(&pdev->dev, "Error requesting %s IRQ: %d\n",
642 axp_data->irq_names[i], ret);
643 return ret;
644 }
645 }
646
647 if (axp20x_usb_vbus_needs_polling(power))
648 queue_delayed_work(system_power_efficient_wq, &power->vbus_detect, 0);
649
650 return 0;
651 }
652
653 static const struct of_device_id axp20x_usb_power_match[] = {
654 {
655 .compatible = "x-powers,axp192-usb-power-supply",
656 .data = &axp192_data,
657 }, {
658 .compatible = "x-powers,axp202-usb-power-supply",
659 .data = &axp202_data,
660 }, {
661 .compatible = "x-powers,axp221-usb-power-supply",
662 .data = &axp221_data,
663 }, {
664 .compatible = "x-powers,axp223-usb-power-supply",
665 .data = &axp223_data,
666 }, {
667 .compatible = "x-powers,axp813-usb-power-supply",
668 .data = &axp813_data,
669 }, { /* sentinel */ }
670 };
671 MODULE_DEVICE_TABLE(of, axp20x_usb_power_match);
672
673 static struct platform_driver axp20x_usb_power_driver = {
674 .probe = axp20x_usb_power_probe,
675 .driver = {
676 .name = DRVNAME,
677 .of_match_table = axp20x_usb_power_match,
678 .pm = &axp20x_usb_power_pm_ops,
679 },
680 };
681
682 module_platform_driver(axp20x_usb_power_driver);
683
684 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
685 MODULE_DESCRIPTION("AXP20x PMIC USB power supply status driver");
686 MODULE_LICENSE("GPL");
687