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1// SPDX-License-Identifier: GPL-2.0+
2//
3// max77693.c - mfd core driver for the MAX 77693
4//
5// Copyright (C) 2012 Samsung Electronics
6// SangYoung Son <hello.son@samsung.com>
7//
8// This program is not provided / owned by Maxim Integrated Products.
9//
10// This driver is based on max8997.c
11
12#include <linux/module.h>
13#include <linux/slab.h>
14#include <linux/i2c.h>
15#include <linux/err.h>
16#include <linux/interrupt.h>
17#include <linux/of.h>
18#include <linux/pm_runtime.h>
19#include <linux/mutex.h>
20#include <linux/mfd/core.h>
21#include <linux/mfd/max77693.h>
22#include <linux/mfd/max77693-common.h>
23#include <linux/mfd/max77693-private.h>
24#include <linux/regulator/machine.h>
25#include <linux/regmap.h>
26
27#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
28#define I2C_ADDR_MUIC (0x4A >> 1)
29#define I2C_ADDR_HAPTIC (0x90 >> 1)
30
31static const struct mfd_cell max77693_devs[] = {
32 { .name = "max77693-pmic", },
33 {
34 .name = "max77693-charger",
35 .of_compatible = "maxim,max77693-charger",
36 },
37 {
38 .name = "max77693-muic",
39 .of_compatible = "maxim,max77693-muic",
40 },
41 {
42 .name = "max77693-haptic",
43 .of_compatible = "maxim,max77693-haptic",
44 },
45 {
46 .name = "max77693-led",
47 .of_compatible = "maxim,max77693-led",
48 },
49};
50
51static const struct regmap_config max77693_regmap_config = {
52 .reg_bits = 8,
53 .val_bits = 8,
54 .max_register = MAX77693_PMIC_REG_END,
55};
56
57static const struct regmap_irq max77693_led_irqs[] = {
58 { .mask = LED_IRQ_FLED2_OPEN, },
59 { .mask = LED_IRQ_FLED2_SHORT, },
60 { .mask = LED_IRQ_FLED1_OPEN, },
61 { .mask = LED_IRQ_FLED1_SHORT, },
62 { .mask = LED_IRQ_MAX_FLASH, },
63};
64
65static const struct regmap_irq_chip max77693_led_irq_chip = {
66 .name = "max77693-led",
67 .status_base = MAX77693_LED_REG_FLASH_INT,
68 .mask_base = MAX77693_LED_REG_FLASH_INT_MASK,
69 .mask_invert = false,
70 .num_regs = 1,
71 .irqs = max77693_led_irqs,
72 .num_irqs = ARRAY_SIZE(max77693_led_irqs),
73};
74
75static const struct regmap_irq max77693_topsys_irqs[] = {
76 { .mask = TOPSYS_IRQ_T120C_INT, },
77 { .mask = TOPSYS_IRQ_T140C_INT, },
78 { .mask = TOPSYS_IRQ_LOWSYS_INT, },
79};
80
81static const struct regmap_irq_chip max77693_topsys_irq_chip = {
82 .name = "max77693-topsys",
83 .status_base = MAX77693_PMIC_REG_TOPSYS_INT,
84 .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK,
85 .mask_invert = false,
86 .num_regs = 1,
87 .irqs = max77693_topsys_irqs,
88 .num_irqs = ARRAY_SIZE(max77693_topsys_irqs),
89};
90
91static const struct regmap_irq max77693_charger_irqs[] = {
92 { .mask = CHG_IRQ_BYP_I, },
93 { .mask = CHG_IRQ_THM_I, },
94 { .mask = CHG_IRQ_BAT_I, },
95 { .mask = CHG_IRQ_CHG_I, },
96 { .mask = CHG_IRQ_CHGIN_I, },
97};
98
99static const struct regmap_irq_chip max77693_charger_irq_chip = {
100 .name = "max77693-charger",
101 .status_base = MAX77693_CHG_REG_CHG_INT,
102 .mask_base = MAX77693_CHG_REG_CHG_INT_MASK,
103 .mask_invert = false,
104 .num_regs = 1,
105 .irqs = max77693_charger_irqs,
106 .num_irqs = ARRAY_SIZE(max77693_charger_irqs),
107};
108
109static const struct regmap_config max77693_regmap_muic_config = {
110 .reg_bits = 8,
111 .val_bits = 8,
112 .max_register = MAX77693_MUIC_REG_END,
113};
114
115static const struct regmap_irq max77693_muic_irqs[] = {
116 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, },
117 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, },
118 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, },
119 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, },
120
121 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, },
122 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, },
123 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, },
124 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, },
125 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, },
126 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, },
127
128 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, },
129 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, },
130 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, },
131 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, },
132 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, },
133 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, },
134};
135
136static const struct regmap_irq_chip max77693_muic_irq_chip = {
137 .name = "max77693-muic",
138 .status_base = MAX77693_MUIC_REG_INT1,
139 .mask_base = MAX77693_MUIC_REG_INTMASK1,
140 .mask_invert = true,
141 .num_regs = 3,
142 .irqs = max77693_muic_irqs,
143 .num_irqs = ARRAY_SIZE(max77693_muic_irqs),
144};
145
146static const struct regmap_config max77693_regmap_haptic_config = {
147 .reg_bits = 8,
148 .val_bits = 8,
149 .max_register = MAX77693_HAPTIC_REG_END,
150};
151
152static int max77693_i2c_probe(struct i2c_client *i2c,
153 const struct i2c_device_id *id)
154{
155 struct max77693_dev *max77693;
156 unsigned int reg_data;
157 int ret = 0;
158
159 max77693 = devm_kzalloc(&i2c->dev,
160 sizeof(struct max77693_dev), GFP_KERNEL);
161 if (max77693 == NULL)
162 return -ENOMEM;
163
164 i2c_set_clientdata(i2c, max77693);
165 max77693->dev = &i2c->dev;
166 max77693->i2c = i2c;
167 max77693->irq = i2c->irq;
168 max77693->type = id->driver_data;
169
170 max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
171 if (IS_ERR(max77693->regmap)) {
172 ret = PTR_ERR(max77693->regmap);
173 dev_err(max77693->dev, "failed to allocate register map: %d\n",
174 ret);
175 return ret;
176 }
177
178 ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
179 ®_data);
180 if (ret < 0) {
181 dev_err(max77693->dev, "device not found on this channel\n");
182 return ret;
183 } else
184 dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
185
186 max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
187 if (IS_ERR(max77693->i2c_muic)) {
188 dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
189 return PTR_ERR(max77693->i2c_muic);
190 }
191 i2c_set_clientdata(max77693->i2c_muic, max77693);
192
193 max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
194 if (IS_ERR(max77693->i2c_haptic)) {
195 dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
196 ret = PTR_ERR(max77693->i2c_haptic);
197 goto err_i2c_haptic;
198 }
199 i2c_set_clientdata(max77693->i2c_haptic, max77693);
200
201 max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
202 &max77693_regmap_haptic_config);
203 if (IS_ERR(max77693->regmap_haptic)) {
204 ret = PTR_ERR(max77693->regmap_haptic);
205 dev_err(max77693->dev,
206 "failed to initialize haptic register map: %d\n", ret);
207 goto err_regmap;
208 }
209
210 /*
211 * Initialize register map for MUIC device because use regmap-muic
212 * instance of MUIC device when irq of max77693 is initialized
213 * before call max77693-muic probe() function.
214 */
215 max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
216 &max77693_regmap_muic_config);
217 if (IS_ERR(max77693->regmap_muic)) {
218 ret = PTR_ERR(max77693->regmap_muic);
219 dev_err(max77693->dev,
220 "failed to allocate register map: %d\n", ret);
221 goto err_regmap;
222 }
223
224 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
225 IRQF_ONESHOT | IRQF_SHARED |
226 IRQF_TRIGGER_FALLING, 0,
227 &max77693_led_irq_chip,
228 &max77693->irq_data_led);
229 if (ret) {
230 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
231 goto err_regmap;
232 }
233
234 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
235 IRQF_ONESHOT | IRQF_SHARED |
236 IRQF_TRIGGER_FALLING, 0,
237 &max77693_topsys_irq_chip,
238 &max77693->irq_data_topsys);
239 if (ret) {
240 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
241 goto err_irq_topsys;
242 }
243
244 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
245 IRQF_ONESHOT | IRQF_SHARED |
246 IRQF_TRIGGER_FALLING, 0,
247 &max77693_charger_irq_chip,
248 &max77693->irq_data_chg);
249 if (ret) {
250 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
251 goto err_irq_charger;
252 }
253
254 ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
255 IRQF_ONESHOT | IRQF_SHARED |
256 IRQF_TRIGGER_FALLING, 0,
257 &max77693_muic_irq_chip,
258 &max77693->irq_data_muic);
259 if (ret) {
260 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
261 goto err_irq_muic;
262 }
263
264 /* Unmask interrupts from all blocks in interrupt source register */
265 ret = regmap_update_bits(max77693->regmap,
266 MAX77693_PMIC_REG_INTSRC_MASK,
267 SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
268 if (ret < 0) {
269 dev_err(max77693->dev,
270 "Could not unmask interrupts in INTSRC: %d\n",
271 ret);
272 goto err_intsrc;
273 }
274
275 pm_runtime_set_active(max77693->dev);
276
277 ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
278 ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
279 if (ret < 0)
280 goto err_mfd;
281
282 return ret;
283
284err_mfd:
285 mfd_remove_devices(max77693->dev);
286err_intsrc:
287 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
288err_irq_muic:
289 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
290err_irq_charger:
291 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
292err_irq_topsys:
293 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
294err_regmap:
295 i2c_unregister_device(max77693->i2c_haptic);
296err_i2c_haptic:
297 i2c_unregister_device(max77693->i2c_muic);
298 return ret;
299}
300
301static int max77693_i2c_remove(struct i2c_client *i2c)
302{
303 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
304
305 mfd_remove_devices(max77693->dev);
306
307 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
308 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
309 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
310 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
311
312 i2c_unregister_device(max77693->i2c_muic);
313 i2c_unregister_device(max77693->i2c_haptic);
314
315 return 0;
316}
317
318static const struct i2c_device_id max77693_i2c_id[] = {
319 { "max77693", TYPE_MAX77693 },
320 { }
321};
322MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
323
324static int max77693_suspend(struct device *dev)
325{
326 struct i2c_client *i2c = to_i2c_client(dev);
327 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
328
329 if (device_may_wakeup(dev)) {
330 enable_irq_wake(max77693->irq);
331 disable_irq(max77693->irq);
332 }
333
334 return 0;
335}
336
337static int max77693_resume(struct device *dev)
338{
339 struct i2c_client *i2c = to_i2c_client(dev);
340 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
341
342 if (device_may_wakeup(dev)) {
343 disable_irq_wake(max77693->irq);
344 enable_irq(max77693->irq);
345 }
346
347 return 0;
348}
349
350static const struct dev_pm_ops max77693_pm = {
351 .suspend = max77693_suspend,
352 .resume = max77693_resume,
353};
354
355#ifdef CONFIG_OF
356static const struct of_device_id max77693_dt_match[] = {
357 { .compatible = "maxim,max77693" },
358 {},
359};
360MODULE_DEVICE_TABLE(of, max77693_dt_match);
361#endif
362
363static struct i2c_driver max77693_i2c_driver = {
364 .driver = {
365 .name = "max77693",
366 .pm = &max77693_pm,
367 .of_match_table = of_match_ptr(max77693_dt_match),
368 },
369 .probe = max77693_i2c_probe,
370 .remove = max77693_i2c_remove,
371 .id_table = max77693_i2c_id,
372};
373
374module_i2c_driver(max77693_i2c_driver);
375
376MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
377MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
378MODULE_LICENSE("GPL");
1/*
2 * max77693.c - mfd core driver for the MAX 77693
3 *
4 * Copyright (C) 2012 Samsung Electronics
5 * SangYoung Son <hello.son@smasung.com>
6 *
7 * This program is not provided / owned by Maxim Integrated Products.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * This driver is based on max8997.c
24 */
25
26#include <linux/module.h>
27#include <linux/slab.h>
28#include <linux/i2c.h>
29#include <linux/err.h>
30#include <linux/interrupt.h>
31#include <linux/of.h>
32#include <linux/pm_runtime.h>
33#include <linux/mutex.h>
34#include <linux/mfd/core.h>
35#include <linux/mfd/max77693.h>
36#include <linux/mfd/max77693-private.h>
37#include <linux/regulator/machine.h>
38#include <linux/regmap.h>
39
40#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
41#define I2C_ADDR_MUIC (0x4A >> 1)
42#define I2C_ADDR_HAPTIC (0x90 >> 1)
43
44static const struct mfd_cell max77693_devs[] = {
45 { .name = "max77693-pmic", },
46 { .name = "max77693-charger", },
47 { .name = "max77693-flash", },
48 { .name = "max77693-muic", },
49 { .name = "max77693-haptic", },
50};
51
52int max77693_read_reg(struct regmap *map, u8 reg, u8 *dest)
53{
54 unsigned int val;
55 int ret;
56
57 ret = regmap_read(map, reg, &val);
58 *dest = val;
59
60 return ret;
61}
62EXPORT_SYMBOL_GPL(max77693_read_reg);
63
64int max77693_bulk_read(struct regmap *map, u8 reg, int count, u8 *buf)
65{
66 int ret;
67
68 ret = regmap_bulk_read(map, reg, buf, count);
69
70 return ret;
71}
72EXPORT_SYMBOL_GPL(max77693_bulk_read);
73
74int max77693_write_reg(struct regmap *map, u8 reg, u8 value)
75{
76 int ret;
77
78 ret = regmap_write(map, reg, value);
79
80 return ret;
81}
82EXPORT_SYMBOL_GPL(max77693_write_reg);
83
84int max77693_bulk_write(struct regmap *map, u8 reg, int count, u8 *buf)
85{
86 int ret;
87
88 ret = regmap_bulk_write(map, reg, buf, count);
89
90 return ret;
91}
92EXPORT_SYMBOL_GPL(max77693_bulk_write);
93
94int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask)
95{
96 int ret;
97
98 ret = regmap_update_bits(map, reg, mask, val);
99
100 return ret;
101}
102EXPORT_SYMBOL_GPL(max77693_update_reg);
103
104static const struct regmap_config max77693_regmap_config = {
105 .reg_bits = 8,
106 .val_bits = 8,
107 .max_register = MAX77693_PMIC_REG_END,
108};
109
110static const struct regmap_config max77693_regmap_muic_config = {
111 .reg_bits = 8,
112 .val_bits = 8,
113 .max_register = MAX77693_MUIC_REG_END,
114};
115
116static int max77693_i2c_probe(struct i2c_client *i2c,
117 const struct i2c_device_id *id)
118{
119 struct max77693_dev *max77693;
120 u8 reg_data;
121 int ret = 0;
122
123 max77693 = devm_kzalloc(&i2c->dev,
124 sizeof(struct max77693_dev), GFP_KERNEL);
125 if (max77693 == NULL)
126 return -ENOMEM;
127
128 i2c_set_clientdata(i2c, max77693);
129 max77693->dev = &i2c->dev;
130 max77693->i2c = i2c;
131 max77693->irq = i2c->irq;
132 max77693->type = id->driver_data;
133
134 max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
135 if (IS_ERR(max77693->regmap)) {
136 ret = PTR_ERR(max77693->regmap);
137 dev_err(max77693->dev, "failed to allocate register map: %d\n",
138 ret);
139 return ret;
140 }
141
142 ret = max77693_read_reg(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
143 ®_data);
144 if (ret < 0) {
145 dev_err(max77693->dev, "device not found on this channel\n");
146 return ret;
147 } else
148 dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
149
150 max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
151 if (!max77693->muic) {
152 dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
153 return -ENODEV;
154 }
155 i2c_set_clientdata(max77693->muic, max77693);
156
157 max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
158 if (!max77693->haptic) {
159 dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
160 ret = -ENODEV;
161 goto err_i2c_haptic;
162 }
163 i2c_set_clientdata(max77693->haptic, max77693);
164
165 /*
166 * Initialize register map for MUIC device because use regmap-muic
167 * instance of MUIC device when irq of max77693 is initialized
168 * before call max77693-muic probe() function.
169 */
170 max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic,
171 &max77693_regmap_muic_config);
172 if (IS_ERR(max77693->regmap_muic)) {
173 ret = PTR_ERR(max77693->regmap_muic);
174 dev_err(max77693->dev,
175 "failed to allocate register map: %d\n", ret);
176 goto err_regmap_muic;
177 }
178
179 ret = max77693_irq_init(max77693);
180 if (ret < 0)
181 goto err_irq;
182
183 pm_runtime_set_active(max77693->dev);
184
185 ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
186 ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
187 if (ret < 0)
188 goto err_mfd;
189
190 return ret;
191
192err_mfd:
193 max77693_irq_exit(max77693);
194err_irq:
195err_regmap_muic:
196 i2c_unregister_device(max77693->haptic);
197err_i2c_haptic:
198 i2c_unregister_device(max77693->muic);
199 return ret;
200}
201
202static int max77693_i2c_remove(struct i2c_client *i2c)
203{
204 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
205
206 mfd_remove_devices(max77693->dev);
207 max77693_irq_exit(max77693);
208 i2c_unregister_device(max77693->muic);
209 i2c_unregister_device(max77693->haptic);
210
211 return 0;
212}
213
214static const struct i2c_device_id max77693_i2c_id[] = {
215 { "max77693", TYPE_MAX77693 },
216 { }
217};
218MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
219
220static int max77693_suspend(struct device *dev)
221{
222 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
223 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
224
225 if (device_may_wakeup(dev))
226 irq_set_irq_wake(max77693->irq, 1);
227 return 0;
228}
229
230static int max77693_resume(struct device *dev)
231{
232 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
233 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
234
235 if (device_may_wakeup(dev))
236 irq_set_irq_wake(max77693->irq, 0);
237 return max77693_irq_resume(max77693);
238}
239
240static const struct dev_pm_ops max77693_pm = {
241 .suspend = max77693_suspend,
242 .resume = max77693_resume,
243};
244
245#ifdef CONFIG_OF
246static struct of_device_id max77693_dt_match[] = {
247 { .compatible = "maxim,max77693" },
248 {},
249};
250#endif
251
252static struct i2c_driver max77693_i2c_driver = {
253 .driver = {
254 .name = "max77693",
255 .owner = THIS_MODULE,
256 .pm = &max77693_pm,
257 .of_match_table = of_match_ptr(max77693_dt_match),
258 },
259 .probe = max77693_i2c_probe,
260 .remove = max77693_i2c_remove,
261 .id_table = max77693_i2c_id,
262};
263
264static int __init max77693_i2c_init(void)
265{
266 return i2c_add_driver(&max77693_i2c_driver);
267}
268/* init early so consumer devices can complete system boot */
269subsys_initcall(max77693_i2c_init);
270
271static void __exit max77693_i2c_exit(void)
272{
273 i2c_del_driver(&max77693_i2c_driver);
274}
275module_exit(max77693_i2c_exit);
276
277MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
278MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
279MODULE_LICENSE("GPL");