1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Core driver for TI TPS6586x PMIC family
4 *
5 * Copyright (c) 2010 CompuLab Ltd.
6 * Mike Rapoport <mike@compulab.co.il>
7 *
8 * Based on da903x.c.
9 * Copyright (C) 2008 Compulab, Ltd.
10 * Mike Rapoport <mike@compulab.co.il>
11 * Copyright (C) 2006-2008 Marvell International Ltd.
12 * Eric Miao <eric.miao@marvell.com>
13 */
14
15 #include <linux/interrupt.h>
16 #include <linux/irq.h>
17 #include <linux/irqdomain.h>
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/mutex.h>
21 #include <linux/slab.h>
22 #include <linux/err.h>
23 #include <linux/i2c.h>
24 #include <linux/platform_device.h>
25 #include <linux/regmap.h>
26 #include <linux/of.h>
27
28 #include <linux/mfd/core.h>
29 #include <linux/mfd/tps6586x.h>
30
31 #define TPS6586X_SUPPLYENE 0x14
32 #define EXITSLREQ_BIT BIT(1)
33 #define SLEEP_MODE_BIT BIT(3)
34
35 /* interrupt control registers */
36 #define TPS6586X_INT_ACK1 0xb5
37 #define TPS6586X_INT_ACK2 0xb6
38 #define TPS6586X_INT_ACK3 0xb7
39 #define TPS6586X_INT_ACK4 0xb8
40
41 /* interrupt mask registers */
42 #define TPS6586X_INT_MASK1 0xb0
43 #define TPS6586X_INT_MASK2 0xb1
44 #define TPS6586X_INT_MASK3 0xb2
45 #define TPS6586X_INT_MASK4 0xb3
46 #define TPS6586X_INT_MASK5 0xb4
47
48 /* device id */
49 #define TPS6586X_VERSIONCRC 0xcd
50
51 /* Maximum register */
52 #define TPS6586X_MAX_REGISTER TPS6586X_VERSIONCRC
53
54 struct tps6586x_irq_data {
55 u8 mask_reg;
56 u8 mask_mask;
57 };
58
59 #define TPS6586X_IRQ(_reg, _mask) \
60 { \
61 .mask_reg = (_reg) - TPS6586X_INT_MASK1, \
62 .mask_mask = (_mask), \
63 }
64
65 static const struct tps6586x_irq_data tps6586x_irqs[] = {
66 [TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
67 [TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
68 [TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
69 [TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
70 [TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
71 [TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
72 [TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
73 [TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
74 [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
75 [TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
76 [TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
77 [TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
78 [TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
79 [TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
80 [TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
81 [TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
82 [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
83 [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
84 [TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
85 [TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
86 [TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
87 [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
88 [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
89 [TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
90 [TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
91 [TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
92 [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
93 };
94
95 static const struct resource tps6586x_rtc_resources[] = {
96 {
97 .start = TPS6586X_INT_RTC_ALM1,
98 .end = TPS6586X_INT_RTC_ALM1,
99 .flags = IORESOURCE_IRQ,
100 },
101 };
102
103 static const struct mfd_cell tps6586x_cell[] = {
104 {
105 .name = "tps6586x-gpio",
106 },
107 {
108 .name = "tps6586x-regulator",
109 },
110 {
111 .name = "tps6586x-rtc",
112 .num_resources = ARRAY_SIZE(tps6586x_rtc_resources),
113 .resources = &tps6586x_rtc_resources[0],
114 },
115 {
116 .name = "tps6586x-onkey",
117 },
118 };
119
120 struct tps6586x {
121 struct device *dev;
122 struct i2c_client *client;
123 struct regmap *regmap;
124 int version;
125
126 int irq;
127 struct irq_chip irq_chip;
128 struct mutex irq_lock;
129 int irq_base;
130 u32 irq_en;
131 u8 mask_reg[5];
132 struct irq_domain *irq_domain;
133 };
134
dev_to_tps6586x(struct device * dev)135 static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
136 {
137 return i2c_get_clientdata(to_i2c_client(dev));
138 }
139
tps6586x_write(struct device * dev,int reg,uint8_t val)140 int tps6586x_write(struct device *dev, int reg, uint8_t val)
141 {
142 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
143
144 return regmap_write(tps6586x->regmap, reg, val);
145 }
146 EXPORT_SYMBOL_GPL(tps6586x_write);
147
tps6586x_writes(struct device * dev,int reg,int len,uint8_t * val)148 int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
149 {
150 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
151
152 return regmap_bulk_write(tps6586x->regmap, reg, val, len);
153 }
154 EXPORT_SYMBOL_GPL(tps6586x_writes);
155
tps6586x_read(struct device * dev,int reg,uint8_t * val)156 int tps6586x_read(struct device *dev, int reg, uint8_t *val)
157 {
158 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
159 unsigned int rval;
160 int ret;
161
162 ret = regmap_read(tps6586x->regmap, reg, &rval);
163 if (!ret)
164 *val = rval;
165 return ret;
166 }
167 EXPORT_SYMBOL_GPL(tps6586x_read);
168
tps6586x_reads(struct device * dev,int reg,int len,uint8_t * val)169 int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
170 {
171 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
172
173 return regmap_bulk_read(tps6586x->regmap, reg, val, len);
174 }
175 EXPORT_SYMBOL_GPL(tps6586x_reads);
176
tps6586x_set_bits(struct device * dev,int reg,uint8_t bit_mask)177 int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
178 {
179 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
180
181 return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
182 }
183 EXPORT_SYMBOL_GPL(tps6586x_set_bits);
184
tps6586x_clr_bits(struct device * dev,int reg,uint8_t bit_mask)185 int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
186 {
187 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
188
189 return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
190 }
191 EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
192
tps6586x_update(struct device * dev,int reg,uint8_t val,uint8_t mask)193 int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
194 {
195 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
196
197 return regmap_update_bits(tps6586x->regmap, reg, mask, val);
198 }
199 EXPORT_SYMBOL_GPL(tps6586x_update);
200
tps6586x_irq_get_virq(struct device * dev,int irq)201 int tps6586x_irq_get_virq(struct device *dev, int irq)
202 {
203 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
204
205 return irq_create_mapping(tps6586x->irq_domain, irq);
206 }
207 EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq);
208
tps6586x_get_version(struct device * dev)209 int tps6586x_get_version(struct device *dev)
210 {
211 struct tps6586x *tps6586x = dev_get_drvdata(dev);
212
213 return tps6586x->version;
214 }
215 EXPORT_SYMBOL_GPL(tps6586x_get_version);
216
__remove_subdev(struct device * dev,void * unused)217 static int __remove_subdev(struct device *dev, void *unused)
218 {
219 platform_device_unregister(to_platform_device(dev));
220 return 0;
221 }
222
tps6586x_remove_subdevs(struct tps6586x * tps6586x)223 static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
224 {
225 return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
226 }
227
tps6586x_irq_lock(struct irq_data * data)228 static void tps6586x_irq_lock(struct irq_data *data)
229 {
230 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
231
232 mutex_lock(&tps6586x->irq_lock);
233 }
234
tps6586x_irq_enable(struct irq_data * irq_data)235 static void tps6586x_irq_enable(struct irq_data *irq_data)
236 {
237 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
238 unsigned int __irq = irq_data->hwirq;
239 const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
240
241 tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
242 tps6586x->irq_en |= (1 << __irq);
243 }
244
tps6586x_irq_disable(struct irq_data * irq_data)245 static void tps6586x_irq_disable(struct irq_data *irq_data)
246 {
247 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
248
249 unsigned int __irq = irq_data->hwirq;
250 const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
251
252 tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
253 tps6586x->irq_en &= ~(1 << __irq);
254 }
255
tps6586x_irq_sync_unlock(struct irq_data * data)256 static void tps6586x_irq_sync_unlock(struct irq_data *data)
257 {
258 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
259 int i;
260
261 for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
262 int ret;
263 ret = tps6586x_write(tps6586x->dev,
264 TPS6586X_INT_MASK1 + i,
265 tps6586x->mask_reg[i]);
266 WARN_ON(ret);
267 }
268
269 mutex_unlock(&tps6586x->irq_lock);
270 }
271
tps6586x_irq_set_wake(struct irq_data * irq_data,unsigned int on)272 static int tps6586x_irq_set_wake(struct irq_data *irq_data, unsigned int on)
273 {
274 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
275 return irq_set_irq_wake(tps6586x->irq, on);
276 }
277
278 static struct irq_chip tps6586x_irq_chip = {
279 .name = "tps6586x",
280 .irq_bus_lock = tps6586x_irq_lock,
281 .irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
282 .irq_disable = tps6586x_irq_disable,
283 .irq_enable = tps6586x_irq_enable,
284 .irq_set_wake = pm_sleep_ptr(tps6586x_irq_set_wake),
285 };
286
tps6586x_irq_map(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)287 static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
288 irq_hw_number_t hw)
289 {
290 struct tps6586x *tps6586x = h->host_data;
291
292 irq_set_chip_data(virq, tps6586x);
293 irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
294 irq_set_nested_thread(virq, 1);
295 irq_set_noprobe(virq);
296
297 return 0;
298 }
299
300 static const struct irq_domain_ops tps6586x_domain_ops = {
301 .map = tps6586x_irq_map,
302 .xlate = irq_domain_xlate_twocell,
303 };
304
tps6586x_irq(int irq,void * data)305 static irqreturn_t tps6586x_irq(int irq, void *data)
306 {
307 struct tps6586x *tps6586x = data;
308 uint32_t acks;
309 __le32 val;
310 int ret = 0;
311
312 ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
313 sizeof(acks), (uint8_t *)&val);
314
315 if (ret < 0) {
316 dev_err(tps6586x->dev, "failed to read interrupt status\n");
317 return IRQ_NONE;
318 }
319
320 acks = le32_to_cpu(val);
321
322 while (acks) {
323 int i = __ffs(acks);
324
325 if (tps6586x->irq_en & (1 << i))
326 handle_nested_irq(
327 irq_find_mapping(tps6586x->irq_domain, i));
328
329 acks &= ~(1 << i);
330 }
331
332 return IRQ_HANDLED;
333 }
334
tps6586x_irq_init(struct tps6586x * tps6586x,int irq,int irq_base)335 static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
336 int irq_base)
337 {
338 int i, ret;
339 u8 tmp[4];
340 int new_irq_base;
341 int irq_num = ARRAY_SIZE(tps6586x_irqs);
342
343 tps6586x->irq = irq;
344
345 mutex_init(&tps6586x->irq_lock);
346 for (i = 0; i < 5; i++) {
347 tps6586x->mask_reg[i] = 0xff;
348 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
349 }
350
351 tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
352
353 if (irq_base > 0) {
354 new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
355 if (new_irq_base < 0) {
356 dev_err(tps6586x->dev,
357 "Failed to alloc IRQs: %d\n", new_irq_base);
358 return new_irq_base;
359 }
360 } else {
361 new_irq_base = 0;
362 }
363
364 tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
365 irq_num, new_irq_base, &tps6586x_domain_ops,
366 tps6586x);
367 if (!tps6586x->irq_domain) {
368 dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
369 return -ENOMEM;
370 }
371 ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
372 "tps6586x", tps6586x);
373
374 if (!ret)
375 device_init_wakeup(tps6586x->dev, 1);
376
377 return ret;
378 }
379
tps6586x_add_subdevs(struct tps6586x * tps6586x,struct tps6586x_platform_data * pdata)380 static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
381 struct tps6586x_platform_data *pdata)
382 {
383 struct tps6586x_subdev_info *subdev;
384 struct platform_device *pdev;
385 int i, ret = 0;
386
387 for (i = 0; i < pdata->num_subdevs; i++) {
388 subdev = &pdata->subdevs[i];
389
390 pdev = platform_device_alloc(subdev->name, subdev->id);
391 if (!pdev) {
392 ret = -ENOMEM;
393 goto failed;
394 }
395
396 pdev->dev.parent = tps6586x->dev;
397 pdev->dev.platform_data = subdev->platform_data;
398 pdev->dev.of_node = subdev->of_node;
399
400 ret = platform_device_add(pdev);
401 if (ret) {
402 platform_device_put(pdev);
403 goto failed;
404 }
405 }
406 return 0;
407
408 failed:
409 tps6586x_remove_subdevs(tps6586x);
410 return ret;
411 }
412
413 #ifdef CONFIG_OF
tps6586x_parse_dt(struct i2c_client * client)414 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
415 {
416 struct device_node *np = client->dev.of_node;
417 struct tps6586x_platform_data *pdata;
418
419 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
420 if (!pdata)
421 return NULL;
422
423 pdata->num_subdevs = 0;
424 pdata->subdevs = NULL;
425 pdata->gpio_base = -1;
426 pdata->irq_base = -1;
427 pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
428
429 return pdata;
430 }
431
432 static const struct of_device_id tps6586x_of_match[] = {
433 { .compatible = "ti,tps6586x", },
434 { },
435 };
436 #else
tps6586x_parse_dt(struct i2c_client * client)437 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
438 {
439 return NULL;
440 }
441 #endif
442
is_volatile_reg(struct device * dev,unsigned int reg)443 static bool is_volatile_reg(struct device *dev, unsigned int reg)
444 {
445 /* Cache all interrupt mask register */
446 if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
447 return false;
448
449 return true;
450 }
451
452 static const struct regmap_config tps6586x_regmap_config = {
453 .reg_bits = 8,
454 .val_bits = 8,
455 .max_register = TPS6586X_MAX_REGISTER,
456 .volatile_reg = is_volatile_reg,
457 .cache_type = REGCACHE_RBTREE,
458 };
459
460 static struct device *tps6586x_dev;
tps6586x_power_off(void)461 static void tps6586x_power_off(void)
462 {
463 if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
464 return;
465
466 tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
467 }
468
tps6586x_print_version(struct i2c_client * client,int version)469 static void tps6586x_print_version(struct i2c_client *client, int version)
470 {
471 const char *name;
472
473 switch (version) {
474 case TPS658621A:
475 name = "TPS658621A";
476 break;
477 case TPS658621CD:
478 name = "TPS658621C/D";
479 break;
480 case TPS658623:
481 name = "TPS658623";
482 break;
483 case TPS658640:
484 case TPS658640v2:
485 name = "TPS658640";
486 break;
487 case TPS658643:
488 name = "TPS658643";
489 break;
490 default:
491 name = "TPS6586X";
492 break;
493 }
494
495 dev_info(&client->dev, "Found %s, VERSIONCRC is %02x\n", name, version);
496 }
497
tps6586x_i2c_probe(struct i2c_client * client)498 static int tps6586x_i2c_probe(struct i2c_client *client)
499 {
500 struct tps6586x_platform_data *pdata = dev_get_platdata(&client->dev);
501 struct tps6586x *tps6586x;
502 int ret;
503 int version;
504
505 if (!pdata && client->dev.of_node)
506 pdata = tps6586x_parse_dt(client);
507
508 if (!pdata) {
509 dev_err(&client->dev, "tps6586x requires platform data\n");
510 return -ENOTSUPP;
511 }
512
513 version = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
514 if (version < 0) {
515 dev_err(&client->dev, "Chip ID read failed: %d\n", version);
516 return -EIO;
517 }
518
519 tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
520 if (!tps6586x)
521 return -ENOMEM;
522
523 tps6586x->version = version;
524 tps6586x_print_version(client, tps6586x->version);
525
526 tps6586x->client = client;
527 tps6586x->dev = &client->dev;
528 i2c_set_clientdata(client, tps6586x);
529
530 tps6586x->regmap = devm_regmap_init_i2c(client,
531 &tps6586x_regmap_config);
532 if (IS_ERR(tps6586x->regmap)) {
533 ret = PTR_ERR(tps6586x->regmap);
534 dev_err(&client->dev, "regmap init failed: %d\n", ret);
535 return ret;
536 }
537
538
539 if (client->irq) {
540 ret = tps6586x_irq_init(tps6586x, client->irq,
541 pdata->irq_base);
542 if (ret) {
543 dev_err(&client->dev, "IRQ init failed: %d\n", ret);
544 return ret;
545 }
546 }
547
548 ret = mfd_add_devices(tps6586x->dev, -1,
549 tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
550 NULL, 0, tps6586x->irq_domain);
551 if (ret < 0) {
552 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
553 goto err_mfd_add;
554 }
555
556 ret = tps6586x_add_subdevs(tps6586x, pdata);
557 if (ret) {
558 dev_err(&client->dev, "add devices failed: %d\n", ret);
559 goto err_add_devs;
560 }
561
562 if (pdata->pm_off && !pm_power_off) {
563 tps6586x_dev = &client->dev;
564 pm_power_off = tps6586x_power_off;
565 }
566
567 return 0;
568
569 err_add_devs:
570 mfd_remove_devices(tps6586x->dev);
571 err_mfd_add:
572 if (client->irq)
573 free_irq(client->irq, tps6586x);
574 return ret;
575 }
576
tps6586x_i2c_remove(struct i2c_client * client)577 static void tps6586x_i2c_remove(struct i2c_client *client)
578 {
579 struct tps6586x *tps6586x = i2c_get_clientdata(client);
580
581 tps6586x_remove_subdevs(tps6586x);
582 mfd_remove_devices(tps6586x->dev);
583 if (client->irq)
584 free_irq(client->irq, tps6586x);
585 }
586
tps6586x_i2c_suspend(struct device * dev)587 static int __maybe_unused tps6586x_i2c_suspend(struct device *dev)
588 {
589 struct tps6586x *tps6586x = dev_get_drvdata(dev);
590
591 if (tps6586x->client->irq)
592 disable_irq(tps6586x->client->irq);
593
594 return 0;
595 }
596
tps6586x_i2c_resume(struct device * dev)597 static int __maybe_unused tps6586x_i2c_resume(struct device *dev)
598 {
599 struct tps6586x *tps6586x = dev_get_drvdata(dev);
600
601 if (tps6586x->client->irq)
602 enable_irq(tps6586x->client->irq);
603
604 return 0;
605 }
606
607 static SIMPLE_DEV_PM_OPS(tps6586x_pm_ops, tps6586x_i2c_suspend,
608 tps6586x_i2c_resume);
609
610 static const struct i2c_device_id tps6586x_id_table[] = {
611 { "tps6586x", 0 },
612 { },
613 };
614 MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
615
616 static struct i2c_driver tps6586x_driver = {
617 .driver = {
618 .name = "tps6586x",
619 .of_match_table = of_match_ptr(tps6586x_of_match),
620 .pm = &tps6586x_pm_ops,
621 },
622 .probe = tps6586x_i2c_probe,
623 .remove = tps6586x_i2c_remove,
624 .id_table = tps6586x_id_table,
625 };
626
tps6586x_init(void)627 static int __init tps6586x_init(void)
628 {
629 return i2c_add_driver(&tps6586x_driver);
630 }
631 subsys_initcall(tps6586x_init);
632
tps6586x_exit(void)633 static void __exit tps6586x_exit(void)
634 {
635 i2c_del_driver(&tps6586x_driver);
636 }
637 module_exit(tps6586x_exit);
638
639 MODULE_DESCRIPTION("TPS6586X core driver");
640 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
641