GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / mfd / tps6586x.c
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 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
135 static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
136 {
137         return i2c_get_clientdata(to_i2c_client(dev));
138 }
139
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
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
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
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
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
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
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
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
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
217 static int __remove_subdev(struct device *dev, void *unused)
218 {
219         platform_device_unregister(to_platform_device(dev));
220         return 0;
221 }
222
223 static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
224 {
225         return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
226 }
227
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
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
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
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
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
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
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
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
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
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
441 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
442 {
443         return NULL;
444 }
445 #endif
446
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;
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
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
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
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
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
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
633 static int __init tps6586x_init(void)
634 {
635         return i2c_add_driver(&tps6586x_driver);
636 }
637 subsys_initcall(tps6586x_init);
638
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");