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
272 #ifdef CONFIG_PM_SLEEP
tps6586x_irq_set_wake(struct irq_data * irq_data,unsigned int on)273 static int tps6586x_irq_set_wake(struct irq_data *irq_data, unsigned int on)
274 {
275 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
276 return irq_set_irq_wake(tps6586x->irq, on);
277 }
278 #else
279 #define tps6586x_irq_set_wake NULL
280 #endif
281
282 static struct irq_chip tps6586x_irq_chip = {
283 .name = "tps6586x",
284 .irq_bus_lock = tps6586x_irq_lock,
285 .irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
286 .irq_disable = tps6586x_irq_disable,
287 .irq_enable = tps6586x_irq_enable,
288 .irq_set_wake = tps6586x_irq_set_wake,
289 };
290
tps6586x_irq_map(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)291 static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
292 irq_hw_number_t hw)
293 {
294 struct tps6586x *tps6586x = h->host_data;
295
296 irq_set_chip_data(virq, tps6586x);
297 irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
298 irq_set_nested_thread(virq, 1);
299 irq_set_noprobe(virq);
300
301 return 0;
302 }
303
304 static const struct irq_domain_ops tps6586x_domain_ops = {
305 .map = tps6586x_irq_map,
306 .xlate = irq_domain_xlate_twocell,
307 };
308
tps6586x_irq(int irq,void * data)309 static irqreturn_t tps6586x_irq(int irq, void *data)
310 {
311 struct tps6586x *tps6586x = data;
312 uint32_t acks;
313 __le32 val;
314 int ret = 0;
315
316 ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
317 sizeof(acks), (uint8_t *)&val);
318
319 if (ret < 0) {
320 dev_err(tps6586x->dev, "failed to read interrupt status\n");
321 return IRQ_NONE;
322 }
323
324 acks = le32_to_cpu(val);
325
326 while (acks) {
327 int i = __ffs(acks);
328
329 if (tps6586x->irq_en & (1 << i))
330 handle_nested_irq(
331 irq_find_mapping(tps6586x->irq_domain, i));
332
333 acks &= ~(1 << i);
334 }
335
336 return IRQ_HANDLED;
337 }
338
tps6586x_irq_init(struct tps6586x * tps6586x,int irq,int irq_base)339 static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
340 int irq_base)
341 {
342 int i, ret;
343 u8 tmp[4];
344 int new_irq_base;
345 int irq_num = ARRAY_SIZE(tps6586x_irqs);
346
347 tps6586x->irq = irq;
348
349 mutex_init(&tps6586x->irq_lock);
350 for (i = 0; i < 5; i++) {
351 tps6586x->mask_reg[i] = 0xff;
352 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
353 }
354
355 tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
356
357 if (irq_base > 0) {
358 new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
359 if (new_irq_base < 0) {
360 dev_err(tps6586x->dev,
361 "Failed to alloc IRQs: %d\n", new_irq_base);
362 return new_irq_base;
363 }
364 } else {
365 new_irq_base = 0;
366 }
367
368 tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
369 irq_num, new_irq_base, &tps6586x_domain_ops,
370 tps6586x);
371 if (!tps6586x->irq_domain) {
372 dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
373 return -ENOMEM;
374 }
375 ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
376 "tps6586x", tps6586x);
377
378 if (!ret)
379 device_init_wakeup(tps6586x->dev, 1);
380
381 return ret;
382 }
383
tps6586x_add_subdevs(struct tps6586x * tps6586x,struct tps6586x_platform_data * pdata)384 static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
385 struct tps6586x_platform_data *pdata)
386 {
387 struct tps6586x_subdev_info *subdev;
388 struct platform_device *pdev;
389 int i, ret = 0;
390
391 for (i = 0; i < pdata->num_subdevs; i++) {
392 subdev = &pdata->subdevs[i];
393
394 pdev = platform_device_alloc(subdev->name, subdev->id);
395 if (!pdev) {
396 ret = -ENOMEM;
397 goto failed;
398 }
399
400 pdev->dev.parent = tps6586x->dev;
401 pdev->dev.platform_data = subdev->platform_data;
402 pdev->dev.of_node = subdev->of_node;
403
404 ret = platform_device_add(pdev);
405 if (ret) {
406 platform_device_put(pdev);
407 goto failed;
408 }
409 }
410 return 0;
411
412 failed:
413 tps6586x_remove_subdevs(tps6586x);
414 return ret;
415 }
416
417 #ifdef CONFIG_OF
tps6586x_parse_dt(struct i2c_client * client)418 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
419 {
420 struct device_node *np = client->dev.of_node;
421 struct tps6586x_platform_data *pdata;
422
423 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
424 if (!pdata)
425 return NULL;
426
427 pdata->num_subdevs = 0;
428 pdata->subdevs = NULL;
429 pdata->gpio_base = -1;
430 pdata->irq_base = -1;
431 pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
432
433 return pdata;
434 }
435
436 static const struct of_device_id tps6586x_of_match[] = {
437 { .compatible = "ti,tps6586x", },
438 { },
439 };
440 #else
tps6586x_parse_dt(struct i2c_client * client)441 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
442 {
443 return NULL;
444 }
445 #endif
446
is_volatile_reg(struct device * dev,unsigned int reg)447 static bool is_volatile_reg(struct device *dev, unsigned int reg)
448 {
449 /* Cache all interrupt mask register */
450 if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
451 return false;
452
453 return true;
454 }
455
456 static const struct regmap_config tps6586x_regmap_config = {
457 .reg_bits = 8,
458 .val_bits = 8,
459 .max_register = TPS6586X_MAX_REGISTER,
460 .volatile_reg = is_volatile_reg,
461 .cache_type = REGCACHE_RBTREE,
462 };
463
464 static struct device *tps6586x_dev;
tps6586x_power_off(void)465 static void tps6586x_power_off(void)
466 {
467 if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
468 return;
469
470 tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
471 }
472
tps6586x_print_version(struct i2c_client * client,int version)473 static void tps6586x_print_version(struct i2c_client *client, int version)
474 {
475 const char *name;
476
477 switch (version) {
478 case TPS658621A:
479 name = "TPS658621A";
480 break;
481 case TPS658621CD:
482 name = "TPS658621C/D";
483 break;
484 case TPS658623:
485 name = "TPS658623";
486 break;
487 case TPS658640:
488 case TPS658640v2:
489 name = "TPS658640";
490 break;
491 case TPS658643:
492 name = "TPS658643";
493 break;
494 default:
495 name = "TPS6586X";
496 break;
497 }
498
499 dev_info(&client->dev, "Found %s, VERSIONCRC is %02x\n", name, version);
500 }
501
tps6586x_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)502 static int tps6586x_i2c_probe(struct i2c_client *client,
503 const struct i2c_device_id *id)
504 {
505 struct tps6586x_platform_data *pdata = dev_get_platdata(&client->dev);
506 struct tps6586x *tps6586x;
507 int ret;
508 int version;
509
510 if (!pdata && client->dev.of_node)
511 pdata = tps6586x_parse_dt(client);
512
513 if (!pdata) {
514 dev_err(&client->dev, "tps6586x requires platform data\n");
515 return -ENOTSUPP;
516 }
517
518 version = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
519 if (version < 0) {
520 dev_err(&client->dev, "Chip ID read failed: %d\n", version);
521 return -EIO;
522 }
523
524 tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
525 if (!tps6586x)
526 return -ENOMEM;
527
528 tps6586x->version = version;
529 tps6586x_print_version(client, tps6586x->version);
530
531 tps6586x->client = client;
532 tps6586x->dev = &client->dev;
533 i2c_set_clientdata(client, tps6586x);
534
535 tps6586x->regmap = devm_regmap_init_i2c(client,
536 &tps6586x_regmap_config);
537 if (IS_ERR(tps6586x->regmap)) {
538 ret = PTR_ERR(tps6586x->regmap);
539 dev_err(&client->dev, "regmap init failed: %d\n", ret);
540 return ret;
541 }
542
543
544 if (client->irq) {
545 ret = tps6586x_irq_init(tps6586x, client->irq,
546 pdata->irq_base);
547 if (ret) {
548 dev_err(&client->dev, "IRQ init failed: %d\n", ret);
549 return ret;
550 }
551 }
552
553 ret = mfd_add_devices(tps6586x->dev, -1,
554 tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
555 NULL, 0, tps6586x->irq_domain);
556 if (ret < 0) {
557 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
558 goto err_mfd_add;
559 }
560
561 ret = tps6586x_add_subdevs(tps6586x, pdata);
562 if (ret) {
563 dev_err(&client->dev, "add devices failed: %d\n", ret);
564 goto err_add_devs;
565 }
566
567 if (pdata->pm_off && !pm_power_off) {
568 tps6586x_dev = &client->dev;
569 pm_power_off = tps6586x_power_off;
570 }
571
572 return 0;
573
574 err_add_devs:
575 mfd_remove_devices(tps6586x->dev);
576 err_mfd_add:
577 if (client->irq)
578 free_irq(client->irq, tps6586x);
579 return ret;
580 }
581
tps6586x_i2c_remove(struct i2c_client * client)582 static int tps6586x_i2c_remove(struct i2c_client *client)
583 {
584 struct tps6586x *tps6586x = i2c_get_clientdata(client);
585
586 tps6586x_remove_subdevs(tps6586x);
587 mfd_remove_devices(tps6586x->dev);
588 if (client->irq)
589 free_irq(client->irq, tps6586x);
590 return 0;
591 }
592
tps6586x_i2c_suspend(struct device * dev)593 static int __maybe_unused tps6586x_i2c_suspend(struct device *dev)
594 {
595 struct tps6586x *tps6586x = dev_get_drvdata(dev);
596
597 if (tps6586x->client->irq)
598 disable_irq(tps6586x->client->irq);
599
600 return 0;
601 }
602
tps6586x_i2c_resume(struct device * dev)603 static int __maybe_unused tps6586x_i2c_resume(struct device *dev)
604 {
605 struct tps6586x *tps6586x = dev_get_drvdata(dev);
606
607 if (tps6586x->client->irq)
608 enable_irq(tps6586x->client->irq);
609
610 return 0;
611 }
612
613 static SIMPLE_DEV_PM_OPS(tps6586x_pm_ops, tps6586x_i2c_suspend,
614 tps6586x_i2c_resume);
615
616 static const struct i2c_device_id tps6586x_id_table[] = {
617 { "tps6586x", 0 },
618 { },
619 };
620 MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
621
622 static struct i2c_driver tps6586x_driver = {
623 .driver = {
624 .name = "tps6586x",
625 .of_match_table = of_match_ptr(tps6586x_of_match),
626 .pm = &tps6586x_pm_ops,
627 },
628 .probe = tps6586x_i2c_probe,
629 .remove = tps6586x_i2c_remove,
630 .id_table = tps6586x_id_table,
631 };
632
tps6586x_init(void)633 static int __init tps6586x_init(void)
634 {
635 return i2c_add_driver(&tps6586x_driver);
636 }
637 subsys_initcall(tps6586x_init);
638
tps6586x_exit(void)639 static void __exit tps6586x_exit(void)
640 {
641 i2c_del_driver(&tps6586x_driver);
642 }
643 module_exit(tps6586x_exit);
644
645 MODULE_DESCRIPTION("TPS6586X core driver");
646 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
647 MODULE_LICENSE("GPL");
648