blob: 4a5e885383f8a5a866d78545b6f59150a0d6cb2f [file] [log] [blame]
Chanwoo Choi3008ddb2013-11-22 16:51:05 +01001/*
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +02002 * max14577.c - mfd core driver for the Maxim 14577/77836
Chanwoo Choi3008ddb2013-11-22 16:51:05 +01003 *
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +02004 * Copyright (C) 2014 Samsung Electrnoics
Chanwoo Choi3008ddb2013-11-22 16:51:05 +01005 * Chanwoo Choi <cw00.choi@samsung.com>
6 * Krzysztof Kozlowski <k.kozlowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * This driver is based on max8997.c
19 */
20
Sachin Kamatc8016d42014-02-12 14:40:11 +053021#include <linux/err.h>
Chanwoo Choi3008ddb2013-11-22 16:51:05 +010022#include <linux/module.h>
23#include <linux/interrupt.h>
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +020024#include <linux/of_device.h>
Chanwoo Choi3008ddb2013-11-22 16:51:05 +010025#include <linux/mfd/core.h>
26#include <linux/mfd/max14577.h>
27#include <linux/mfd/max14577-private.h>
28
Krzysztof Kozlowski92725492014-05-13 12:58:38 +020029static const struct mfd_cell max14577_devs[] = {
Krzysztof Kozlowskia0b0ea42014-01-28 13:18:28 +010030 {
31 .name = "max14577-muic",
32 .of_compatible = "maxim,max14577-muic",
33 },
Krzysztof Kozlowski41096802013-11-27 15:16:17 +010034 {
35 .name = "max14577-regulator",
36 .of_compatible = "maxim,max14577-regulator",
37 },
Chanwoo Choi3008ddb2013-11-22 16:51:05 +010038 { .name = "max14577-charger", },
39};
40
Krzysztof Kozlowski92725492014-05-13 12:58:38 +020041static const struct mfd_cell max77836_devs[] = {
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +020042 {
43 .name = "max77836-muic",
44 .of_compatible = "maxim,max77836-muic",
45 },
46 {
47 .name = "max77836-regulator",
48 .of_compatible = "maxim,max77836-regulator",
49 },
50 {
51 .name = "max77836-charger",
52 .of_compatible = "maxim,max77836-charger",
53 },
54 {
55 .name = "max77836-battery",
56 .of_compatible = "maxim,max77836-battery",
57 },
58};
59
Krzysztof Kozlowski8f7f6272014-05-13 12:58:39 +020060static const struct of_device_id max14577_dt_match[] = {
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +020061 {
62 .compatible = "maxim,max14577",
63 .data = (void *)MAXIM_DEVICE_TYPE_MAX14577,
64 },
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +020065 {
66 .compatible = "maxim,max77836",
67 .data = (void *)MAXIM_DEVICE_TYPE_MAX77836,
68 },
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +020069 {},
70};
71
Krzysztof Kozlowski575343d2014-04-14 11:17:13 +020072static bool max14577_muic_volatile_reg(struct device *dev, unsigned int reg)
Chanwoo Choi3008ddb2013-11-22 16:51:05 +010073{
74 switch (reg) {
75 case MAX14577_REG_INT1 ... MAX14577_REG_STATUS3:
76 return true;
77 default:
78 break;
79 }
80 return false;
81}
82
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +020083static bool max77836_muic_volatile_reg(struct device *dev, unsigned int reg)
84{
85 /* Any max14577 volatile registers are also max77836 volatile. */
86 if (max14577_muic_volatile_reg(dev, reg))
87 return true;
88
89 switch (reg) {
90 case MAX77836_FG_REG_VCELL_MSB ... MAX77836_FG_REG_SOC_LSB:
91 case MAX77836_FG_REG_CRATE_MSB ... MAX77836_FG_REG_CRATE_LSB:
92 case MAX77836_FG_REG_STATUS_H ... MAX77836_FG_REG_STATUS_L:
93 case MAX77836_PMIC_REG_INTSRC:
94 case MAX77836_PMIC_REG_TOPSYS_INT:
95 case MAX77836_PMIC_REG_TOPSYS_STAT:
96 return true;
97 default:
98 break;
99 }
100 return false;
101}
102
Krzysztof Kozlowski575343d2014-04-14 11:17:13 +0200103static const struct regmap_config max14577_muic_regmap_config = {
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100104 .reg_bits = 8,
105 .val_bits = 8,
Krzysztof Kozlowski575343d2014-04-14 11:17:13 +0200106 .volatile_reg = max14577_muic_volatile_reg,
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100107 .max_register = MAX14577_REG_END,
108};
109
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200110static const struct regmap_config max77836_pmic_regmap_config = {
111 .reg_bits = 8,
112 .val_bits = 8,
113 .volatile_reg = max77836_muic_volatile_reg,
114 .max_register = MAX77836_PMIC_REG_END,
115};
116
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100117static const struct regmap_irq max14577_irqs[] = {
118 /* INT1 interrupts */
Krzysztof Kozlowskic7846852014-04-14 11:17:17 +0200119 { .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
120 { .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
121 { .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100122 /* INT2 interrupts */
Krzysztof Kozlowskic7846852014-04-14 11:17:17 +0200123 { .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
124 { .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
125 { .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
126 { .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
127 { .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100128 /* INT3 interrupts */
Krzysztof Kozlowskic7846852014-04-14 11:17:17 +0200129 { .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
130 { .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
131 { .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
132 { .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100133};
134
135static const struct regmap_irq_chip max14577_irq_chip = {
136 .name = "max14577",
137 .status_base = MAX14577_REG_INT1,
138 .mask_base = MAX14577_REG_INTMASK1,
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200139 .mask_invert = true,
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100140 .num_regs = 3,
141 .irqs = max14577_irqs,
142 .num_irqs = ARRAY_SIZE(max14577_irqs),
143};
144
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200145static const struct regmap_irq max77836_muic_irqs[] = {
146 /* INT1 interrupts */
147 { .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
148 { .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
149 { .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
Krzysztof Kozlowski4706a522014-04-14 11:17:19 +0200150 { .reg_offset = 0, .mask = MAX77836_INT1_ADC1K_MASK, },
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200151 /* INT2 interrupts */
152 { .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
153 { .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
154 { .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
155 { .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
156 { .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
157 { .reg_offset = 1, .mask = MAX77836_INT2_VIDRM_MASK, },
158 /* INT3 interrupts */
159 { .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
160 { .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
161 { .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
162 { .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
163};
164
165static const struct regmap_irq_chip max77836_muic_irq_chip = {
166 .name = "max77836-muic",
167 .status_base = MAX14577_REG_INT1,
168 .mask_base = MAX14577_REG_INTMASK1,
169 .mask_invert = true,
170 .num_regs = 3,
171 .irqs = max77836_muic_irqs,
172 .num_irqs = ARRAY_SIZE(max77836_muic_irqs),
173};
174
175static const struct regmap_irq max77836_pmic_irqs[] = {
176 { .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T120C_MASK, },
177 { .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T140C_MASK, },
178};
179
180static const struct regmap_irq_chip max77836_pmic_irq_chip = {
181 .name = "max77836-pmic",
182 .status_base = MAX77836_PMIC_REG_TOPSYS_INT,
183 .mask_base = MAX77836_PMIC_REG_TOPSYS_INT_MASK,
184 .mask_invert = false,
185 .num_regs = 1,
186 .irqs = max77836_pmic_irqs,
187 .num_irqs = ARRAY_SIZE(max77836_pmic_irqs),
188};
189
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200190static void max14577_print_dev_type(struct max14577 *max14577)
191{
192 u8 reg_data, vendor_id, device_id;
193 int ret;
194
195 ret = max14577_read_reg(max14577->regmap, MAX14577_REG_DEVICEID,
196 &reg_data);
197 if (ret) {
198 dev_err(max14577->dev,
199 "Failed to read DEVICEID register: %d\n", ret);
200 return;
201 }
202
203 vendor_id = ((reg_data & DEVID_VENDORID_MASK) >>
204 DEVID_VENDORID_SHIFT);
205 device_id = ((reg_data & DEVID_DEVICEID_MASK) >>
206 DEVID_DEVICEID_SHIFT);
207
208 dev_info(max14577->dev, "Device type: %u (ID: 0x%x, vendor: 0x%x)\n",
209 max14577->dev_type, device_id, vendor_id);
210}
211
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200212/*
213 * Max77836 specific initialization code for driver probe.
214 * Adds new I2C dummy device, regmap and regmap IRQ chip.
215 * Unmasks Interrupt Source register.
216 *
217 * On success returns 0.
218 * On failure returns errno and reverts any changes done so far (e.g. remove
219 * I2C dummy device), except masking the INT SRC register.
220 */
221static int max77836_init(struct max14577 *max14577)
222{
223 int ret;
224 u8 intsrc_mask;
225
226 max14577->i2c_pmic = i2c_new_dummy(max14577->i2c->adapter,
227 I2C_ADDR_PMIC);
228 if (!max14577->i2c_pmic) {
229 dev_err(max14577->dev, "Failed to register PMIC I2C device\n");
230 return -ENODEV;
231 }
232 i2c_set_clientdata(max14577->i2c_pmic, max14577);
233
234 max14577->regmap_pmic = devm_regmap_init_i2c(max14577->i2c_pmic,
235 &max77836_pmic_regmap_config);
236 if (IS_ERR(max14577->regmap_pmic)) {
237 ret = PTR_ERR(max14577->regmap_pmic);
238 dev_err(max14577->dev, "Failed to allocate PMIC register map: %d\n",
239 ret);
240 goto err;
241 }
242
243 /* Un-mask MAX77836 Interrupt Source register */
244 ret = max14577_read_reg(max14577->regmap_pmic,
245 MAX77836_PMIC_REG_INTSRC_MASK, &intsrc_mask);
246 if (ret < 0) {
247 dev_err(max14577->dev, "Failed to read PMIC register\n");
248 goto err;
249 }
250
251 intsrc_mask &= ~(MAX77836_INTSRC_MASK_TOP_INT_MASK);
252 intsrc_mask &= ~(MAX77836_INTSRC_MASK_MUIC_CHG_INT_MASK);
253 ret = max14577_write_reg(max14577->regmap_pmic,
254 MAX77836_PMIC_REG_INTSRC_MASK, intsrc_mask);
255 if (ret < 0) {
256 dev_err(max14577->dev, "Failed to write PMIC register\n");
257 goto err;
258 }
259
260 ret = regmap_add_irq_chip(max14577->regmap_pmic, max14577->irq,
261 IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED,
262 0, &max77836_pmic_irq_chip,
263 &max14577->irq_data_pmic);
264 if (ret != 0) {
265 dev_err(max14577->dev, "Failed to request PMIC IRQ %d: %d\n",
266 max14577->irq, ret);
267 goto err;
268 }
269
270 return 0;
271
272err:
273 i2c_unregister_device(max14577->i2c_pmic);
274
275 return ret;
276}
277
278/*
279 * Max77836 specific de-initialization code for driver remove.
280 */
281static void max77836_remove(struct max14577 *max14577)
282{
283 regmap_del_irq_chip(max14577->irq, max14577->irq_data_pmic);
284 i2c_unregister_device(max14577->i2c_pmic);
285}
286
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100287static int max14577_i2c_probe(struct i2c_client *i2c,
288 const struct i2c_device_id *id)
289{
290 struct max14577 *max14577;
291 struct max14577_platform_data *pdata = dev_get_platdata(&i2c->dev);
292 struct device_node *np = i2c->dev.of_node;
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100293 int ret = 0;
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200294 const struct regmap_irq_chip *irq_chip;
Krzysztof Kozlowski92725492014-05-13 12:58:38 +0200295 const struct mfd_cell *mfd_devs;
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200296 unsigned int mfd_devs_size;
297 int irq_flags;
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100298
299 if (np) {
300 pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
301 if (!pdata)
302 return -ENOMEM;
303 i2c->dev.platform_data = pdata;
304 }
305
306 if (!pdata) {
Dan Carpenteraab5dc62013-12-04 17:07:12 +0300307 dev_err(&i2c->dev, "No platform data found.\n");
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100308 return -EINVAL;
309 }
310
311 max14577 = devm_kzalloc(&i2c->dev, sizeof(*max14577), GFP_KERNEL);
312 if (!max14577)
313 return -ENOMEM;
314
315 i2c_set_clientdata(i2c, max14577);
316 max14577->dev = &i2c->dev;
317 max14577->i2c = i2c;
318 max14577->irq = i2c->irq;
319
Krzysztof Kozlowski575343d2014-04-14 11:17:13 +0200320 max14577->regmap = devm_regmap_init_i2c(i2c,
321 &max14577_muic_regmap_config);
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100322 if (IS_ERR(max14577->regmap)) {
323 ret = PTR_ERR(max14577->regmap);
324 dev_err(max14577->dev, "Failed to allocate register map: %d\n",
325 ret);
326 return ret;
327 }
328
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200329 if (np) {
330 const struct of_device_id *of_id;
331
332 of_id = of_match_device(max14577_dt_match, &i2c->dev);
333 if (of_id)
Lee Jonesfab84452014-05-20 15:37:41 +0100334 max14577->dev_type =
335 (enum maxim_device_type)of_id->data;
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200336 } else {
337 max14577->dev_type = id->driver_data;
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100338 }
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200339
340 max14577_print_dev_type(max14577);
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100341
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200342 switch (max14577->dev_type) {
343 case MAXIM_DEVICE_TYPE_MAX77836:
344 irq_chip = &max77836_muic_irq_chip;
345 mfd_devs = max77836_devs;
346 mfd_devs_size = ARRAY_SIZE(max77836_devs);
347 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
348 break;
349 case MAXIM_DEVICE_TYPE_MAX14577:
350 default:
351 irq_chip = &max14577_irq_chip;
352 mfd_devs = max14577_devs;
353 mfd_devs_size = ARRAY_SIZE(max14577_devs);
354 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
355 break;
356 }
357
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100358 ret = regmap_add_irq_chip(max14577->regmap, max14577->irq,
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200359 irq_flags, 0, irq_chip,
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100360 &max14577->irq_data);
361 if (ret != 0) {
362 dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
363 max14577->irq, ret);
364 return ret;
365 }
366
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200367 /* Max77836 specific initialization code (additional regmap) */
368 if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836) {
369 ret = max77836_init(max14577);
370 if (ret < 0)
371 goto err_max77836;
372 }
373
374 ret = mfd_add_devices(max14577->dev, -1, mfd_devs,
375 mfd_devs_size, NULL, 0,
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100376 regmap_irq_get_domain(max14577->irq_data));
377 if (ret < 0)
378 goto err_mfd;
379
380 device_init_wakeup(max14577->dev, 1);
381
382 return 0;
383
384err_mfd:
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200385 if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
386 max77836_remove(max14577);
387err_max77836:
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100388 regmap_del_irq_chip(max14577->irq, max14577->irq_data);
389
390 return ret;
391}
392
393static int max14577_i2c_remove(struct i2c_client *i2c)
394{
395 struct max14577 *max14577 = i2c_get_clientdata(i2c);
396
397 mfd_remove_devices(max14577->dev);
398 regmap_del_irq_chip(max14577->irq, max14577->irq_data);
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200399 if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
400 max77836_remove(max14577);
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100401
402 return 0;
403}
404
405static const struct i2c_device_id max14577_i2c_id[] = {
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200406 { "max14577", MAXIM_DEVICE_TYPE_MAX14577, },
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200407 { "max77836", MAXIM_DEVICE_TYPE_MAX77836, },
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100408 { }
409};
410MODULE_DEVICE_TABLE(i2c, max14577_i2c_id);
411
Geert Uytterhoeven3edeb1e2014-01-26 11:38:42 +0100412#ifdef CONFIG_PM_SLEEP
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100413static int max14577_suspend(struct device *dev)
414{
415 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
416 struct max14577 *max14577 = i2c_get_clientdata(i2c);
417
Krzysztof Kozlowskic4f725b2014-04-22 15:59:22 +0200418 if (device_may_wakeup(dev))
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100419 enable_irq_wake(max14577->irq);
Krzysztof Kozlowskic4f725b2014-04-22 15:59:22 +0200420 /*
421 * MUIC IRQ must be disabled during suspend because if it happens
422 * while suspended it will be handled before resuming I2C.
423 *
424 * When device is woken up from suspend (e.g. by ADC change),
425 * an interrupt occurs before resuming I2C bus controller.
426 * Interrupt handler tries to read registers but this read
427 * will fail because I2C is still suspended.
428 */
429 disable_irq(max14577->irq);
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100430
431 return 0;
432}
433
434static int max14577_resume(struct device *dev)
435{
436 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
437 struct max14577 *max14577 = i2c_get_clientdata(i2c);
438
Krzysztof Kozlowskic4f725b2014-04-22 15:59:22 +0200439 if (device_may_wakeup(dev))
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100440 disable_irq_wake(max14577->irq);
Krzysztof Kozlowskic4f725b2014-04-22 15:59:22 +0200441 enable_irq(max14577->irq);
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100442
443 return 0;
444}
Geert Uytterhoeven3edeb1e2014-01-26 11:38:42 +0100445#endif /* CONFIG_PM_SLEEP */
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100446
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100447static SIMPLE_DEV_PM_OPS(max14577_pm, max14577_suspend, max14577_resume);
448
449static struct i2c_driver max14577_i2c_driver = {
450 .driver = {
451 .name = "max14577",
452 .owner = THIS_MODULE,
453 .pm = &max14577_pm,
Sachin Kamatae679c12013-12-21 15:50:16 +0530454 .of_match_table = max14577_dt_match,
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100455 },
456 .probe = max14577_i2c_probe,
457 .remove = max14577_i2c_remove,
458 .id_table = max14577_i2c_id,
459};
460
461static int __init max14577_i2c_init(void)
462{
Krzysztof Kozlowskieccb80c2014-04-14 11:17:14 +0200463 BUILD_BUG_ON(ARRAY_SIZE(max14577_i2c_id) != MAXIM_DEVICE_TYPE_NUM);
464 BUILD_BUG_ON(ARRAY_SIZE(max14577_dt_match) != MAXIM_DEVICE_TYPE_NUM);
465
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100466 return i2c_add_driver(&max14577_i2c_driver);
467}
468subsys_initcall(max14577_i2c_init);
469
470static void __exit max14577_i2c_exit(void)
471{
472 i2c_del_driver(&max14577_i2c_driver);
473}
474module_exit(max14577_i2c_exit);
475
476MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>, Krzysztof Kozlowski <k.kozlowski@samsung.com>");
Krzysztof Kozlowskiaee2a572014-04-14 11:17:18 +0200477MODULE_DESCRIPTION("Maxim 14577/77836 multi-function core driver");
Chanwoo Choi3008ddb2013-11-22 16:51:05 +0100478MODULE_LICENSE("GPL");