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Chanwoo Choi83871c02012-05-14 22:50:39 +02001/*
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>
Sachin Kamat71c7f932013-10-18 16:11:57 +053031#include <linux/of.h>
Chanwoo Choi83871c02012-05-14 22:50:39 +020032#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
Geert Uytterhoeven7c0517b2013-11-18 14:33:00 +010044static const struct mfd_cell max77693_devs[] = {
Chanwoo Choi83871c02012-05-14 22:50:39 +020045 { .name = "max77693-pmic", },
Krzysztof Kozlowskiefa3ca42014-10-20 14:34:46 +020046 {
47 .name = "max77693-charger",
48 .of_compatible = "maxim,max77693-charger",
49 },
Chanwoo Choi83871c02012-05-14 22:50:39 +020050 { .name = "max77693-muic", },
Jaewon Kimd1bafd72014-09-18 01:40:25 +090051 {
52 .name = "max77693-haptic",
53 .of_compatible = "maxim,max77693-haptic",
54 },
Jacek Anaszewskia0bc60722014-08-22 11:06:18 +020055 {
56 .name = "max77693-flash",
57 .of_compatible = "maxim,max77693-flash",
58 },
Chanwoo Choi83871c02012-05-14 22:50:39 +020059};
60
Chanwoo Choi83871c02012-05-14 22:50:39 +020061static const struct regmap_config max77693_regmap_config = {
62 .reg_bits = 8,
63 .val_bits = 8,
64 .max_register = MAX77693_PMIC_REG_END,
65};
66
Robert Baldyga342d6692014-05-21 08:52:48 +020067static const struct regmap_irq max77693_led_irqs[] = {
68 { .mask = LED_IRQ_FLED2_OPEN, },
69 { .mask = LED_IRQ_FLED2_SHORT, },
70 { .mask = LED_IRQ_FLED1_OPEN, },
71 { .mask = LED_IRQ_FLED1_SHORT, },
72 { .mask = LED_IRQ_MAX_FLASH, },
73};
74
75static const struct regmap_irq_chip max77693_led_irq_chip = {
76 .name = "max77693-led",
77 .status_base = MAX77693_LED_REG_FLASH_INT,
78 .mask_base = MAX77693_LED_REG_FLASH_INT_MASK,
79 .mask_invert = false,
80 .num_regs = 1,
81 .irqs = max77693_led_irqs,
82 .num_irqs = ARRAY_SIZE(max77693_led_irqs),
83};
84
85static const struct regmap_irq max77693_topsys_irqs[] = {
86 { .mask = TOPSYS_IRQ_T120C_INT, },
87 { .mask = TOPSYS_IRQ_T140C_INT, },
88 { .mask = TOPSYS_IRQ_LOWSYS_INT, },
89};
90
91static const struct regmap_irq_chip max77693_topsys_irq_chip = {
92 .name = "max77693-topsys",
93 .status_base = MAX77693_PMIC_REG_TOPSYS_INT,
94 .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK,
95 .mask_invert = false,
96 .num_regs = 1,
97 .irqs = max77693_topsys_irqs,
98 .num_irqs = ARRAY_SIZE(max77693_topsys_irqs),
99};
100
101static const struct regmap_irq max77693_charger_irqs[] = {
102 { .mask = CHG_IRQ_BYP_I, },
103 { .mask = CHG_IRQ_THM_I, },
104 { .mask = CHG_IRQ_BAT_I, },
105 { .mask = CHG_IRQ_CHG_I, },
106 { .mask = CHG_IRQ_CHGIN_I, },
107};
108
109static const struct regmap_irq_chip max77693_charger_irq_chip = {
110 .name = "max77693-charger",
111 .status_base = MAX77693_CHG_REG_CHG_INT,
112 .mask_base = MAX77693_CHG_REG_CHG_INT_MASK,
113 .mask_invert = false,
114 .num_regs = 1,
115 .irqs = max77693_charger_irqs,
116 .num_irqs = ARRAY_SIZE(max77693_charger_irqs),
117};
118
Krzysztof Kozlowski75ad1322013-12-20 10:35:08 +0100119static const struct regmap_config max77693_regmap_muic_config = {
120 .reg_bits = 8,
121 .val_bits = 8,
122 .max_register = MAX77693_MUIC_REG_END,
123};
124
Robert Baldyga342d6692014-05-21 08:52:48 +0200125static const struct regmap_irq max77693_muic_irqs[] = {
126 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, },
127 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, },
128 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, },
129 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, },
130
131 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, },
132 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, },
133 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, },
134 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, },
135 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, },
136 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, },
137
138 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, },
139 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, },
140 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, },
141 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, },
142 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, },
143 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, },
144};
145
146static const struct regmap_irq_chip max77693_muic_irq_chip = {
147 .name = "max77693-muic",
148 .status_base = MAX77693_MUIC_REG_INT1,
149 .mask_base = MAX77693_MUIC_REG_INTMASK1,
150 .mask_invert = true,
151 .num_regs = 3,
152 .irqs = max77693_muic_irqs,
153 .num_irqs = ARRAY_SIZE(max77693_muic_irqs),
154};
155
Jaewon Kimefbf4922014-09-18 01:40:24 +0900156static const struct regmap_config max77693_regmap_haptic_config = {
157 .reg_bits = 8,
158 .val_bits = 8,
159 .max_register = MAX77693_HAPTIC_REG_END,
160};
161
Chanwoo Choi83871c02012-05-14 22:50:39 +0200162static int max77693_i2c_probe(struct i2c_client *i2c,
163 const struct i2c_device_id *id)
164{
165 struct max77693_dev *max77693;
Robert Baldygad0540f92014-05-21 08:52:47 +0200166 unsigned int reg_data;
Chanwoo Choi83871c02012-05-14 22:50:39 +0200167 int ret = 0;
168
169 max77693 = devm_kzalloc(&i2c->dev,
170 sizeof(struct max77693_dev), GFP_KERNEL);
171 if (max77693 == NULL)
172 return -ENOMEM;
173
Chanwoo Choi83871c02012-05-14 22:50:39 +0200174 i2c_set_clientdata(i2c, max77693);
175 max77693->dev = &i2c->dev;
176 max77693->i2c = i2c;
177 max77693->irq = i2c->irq;
178 max77693->type = id->driver_data;
179
Axel Lin2429d862012-12-25 00:28:36 +0800180 max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
181 if (IS_ERR(max77693->regmap)) {
182 ret = PTR_ERR(max77693->regmap);
183 dev_err(max77693->dev, "failed to allocate register map: %d\n",
184 ret);
185 return ret;
186 }
Chanwoo Choi83871c02012-05-14 22:50:39 +0200187
Robert Baldygad0540f92014-05-21 08:52:47 +0200188 ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
Axel Lin2429d862012-12-25 00:28:36 +0800189 &reg_data);
190 if (ret < 0) {
Chanwoo Choi83871c02012-05-14 22:50:39 +0200191 dev_err(max77693->dev, "device not found on this channel\n");
Axel Lin2429d862012-12-25 00:28:36 +0800192 return ret;
Chanwoo Choi83871c02012-05-14 22:50:39 +0200193 } else
194 dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
195
196 max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
Krzysztof Kozlowskiad09dd62014-02-11 11:03:32 +0100197 if (!max77693->muic) {
198 dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
199 return -ENODEV;
200 }
Chanwoo Choi83871c02012-05-14 22:50:39 +0200201 i2c_set_clientdata(max77693->muic, max77693);
202
203 max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
Krzysztof Kozlowskiad09dd62014-02-11 11:03:32 +0100204 if (!max77693->haptic) {
205 dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
206 ret = -ENODEV;
207 goto err_i2c_haptic;
208 }
Chanwoo Choi83871c02012-05-14 22:50:39 +0200209 i2c_set_clientdata(max77693->haptic, max77693);
210
Jaewon Kimefbf4922014-09-18 01:40:24 +0900211 max77693->regmap_haptic = devm_regmap_init_i2c(max77693->haptic,
212 &max77693_regmap_haptic_config);
213 if (IS_ERR(max77693->regmap_haptic)) {
214 ret = PTR_ERR(max77693->regmap_haptic);
215 dev_err(max77693->dev,
216 "failed to initialize haptic register map: %d\n", ret);
217 goto err_regmap;
218 }
219
Chanwoo Choib186b122012-08-21 15:16:23 +0900220 /*
221 * Initialize register map for MUIC device because use regmap-muic
222 * instance of MUIC device when irq of max77693 is initialized
223 * before call max77693-muic probe() function.
224 */
225 max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic,
Krzysztof Kozlowski75ad1322013-12-20 10:35:08 +0100226 &max77693_regmap_muic_config);
Chanwoo Choib186b122012-08-21 15:16:23 +0900227 if (IS_ERR(max77693->regmap_muic)) {
228 ret = PTR_ERR(max77693->regmap_muic);
229 dev_err(max77693->dev,
230 "failed to allocate register map: %d\n", ret);
Jaewon Kimefbf4922014-09-18 01:40:24 +0900231 goto err_regmap;
Chanwoo Choib186b122012-08-21 15:16:23 +0900232 }
233
Robert Baldyga342d6692014-05-21 08:52:48 +0200234 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
235 IRQF_ONESHOT | IRQF_SHARED |
236 IRQF_TRIGGER_FALLING, 0,
237 &max77693_led_irq_chip,
238 &max77693->irq_data_led);
239 if (ret) {
240 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
Jaewon Kimefbf4922014-09-18 01:40:24 +0900241 goto err_regmap;
Robert Baldyga342d6692014-05-21 08:52:48 +0200242 }
243
244 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
245 IRQF_ONESHOT | IRQF_SHARED |
246 IRQF_TRIGGER_FALLING, 0,
247 &max77693_topsys_irq_chip,
248 &max77693->irq_data_topsys);
249 if (ret) {
250 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
251 goto err_irq_topsys;
252 }
253
254 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
255 IRQF_ONESHOT | IRQF_SHARED |
256 IRQF_TRIGGER_FALLING, 0,
257 &max77693_charger_irq_chip,
258 &max77693->irq_data_charger);
259 if (ret) {
260 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
261 goto err_irq_charger;
262 }
263
Krzysztof Kozlowski43fc9392014-10-10 10:22:01 +0200264 ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
Robert Baldyga342d6692014-05-21 08:52:48 +0200265 IRQF_ONESHOT | IRQF_SHARED |
266 IRQF_TRIGGER_FALLING, 0,
267 &max77693_muic_irq_chip,
268 &max77693->irq_data_muic);
269 if (ret) {
270 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
271 goto err_irq_muic;
272 }
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200273
Krzysztof Kozlowskic0acb812014-10-10 12:48:35 +0200274 /* Unmask interrupts from all blocks in interrupt source register */
275 ret = regmap_update_bits(max77693->regmap,
276 MAX77693_PMIC_REG_INTSRC_MASK,
277 SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
278 if (ret < 0) {
279 dev_err(max77693->dev,
280 "Could not unmask interrupts in INTSRC: %d\n",
281 ret);
282 goto err_intsrc;
283 }
284
Chanwoo Choi83871c02012-05-14 22:50:39 +0200285 pm_runtime_set_active(max77693->dev);
286
287 ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
Mark Brown0848c942012-09-11 15:16:36 +0800288 ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
Chanwoo Choi83871c02012-05-14 22:50:39 +0200289 if (ret < 0)
290 goto err_mfd;
291
292 return ret;
293
294err_mfd:
Robert Baldyga342d6692014-05-21 08:52:48 +0200295 mfd_remove_devices(max77693->dev);
Krzysztof Kozlowskic0acb812014-10-10 12:48:35 +0200296err_intsrc:
Robert Baldyga342d6692014-05-21 08:52:48 +0200297 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
298err_irq_muic:
299 regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger);
300err_irq_charger:
301 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
302err_irq_topsys:
303 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
Jaewon Kimefbf4922014-09-18 01:40:24 +0900304err_regmap:
Chanwoo Choi83871c02012-05-14 22:50:39 +0200305 i2c_unregister_device(max77693->haptic);
Krzysztof Kozlowskiad09dd62014-02-11 11:03:32 +0100306err_i2c_haptic:
307 i2c_unregister_device(max77693->muic);
Chanwoo Choi83871c02012-05-14 22:50:39 +0200308 return ret;
309}
310
311static int max77693_i2c_remove(struct i2c_client *i2c)
312{
313 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
314
315 mfd_remove_devices(max77693->dev);
Robert Baldyga342d6692014-05-21 08:52:48 +0200316
317 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
318 regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger);
319 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
320 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
321
Chanwoo Choi83871c02012-05-14 22:50:39 +0200322 i2c_unregister_device(max77693->muic);
323 i2c_unregister_device(max77693->haptic);
324
325 return 0;
326}
327
328static const struct i2c_device_id max77693_i2c_id[] = {
329 { "max77693", TYPE_MAX77693 },
330 { }
331};
332MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
333
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200334static int max77693_suspend(struct device *dev)
335{
336 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
337 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
338
Robert Baldyga342d6692014-05-21 08:52:48 +0200339 if (device_may_wakeup(dev)) {
340 enable_irq_wake(max77693->irq);
341 disable_irq(max77693->irq);
342 }
343
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200344 return 0;
345}
346
347static int max77693_resume(struct device *dev)
348{
349 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
350 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
351
Robert Baldyga342d6692014-05-21 08:52:48 +0200352 if (device_may_wakeup(dev)) {
353 disable_irq_wake(max77693->irq);
354 enable_irq(max77693->irq);
355 }
356
357 return 0;
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200358}
359
Mark Brown12477a32012-06-05 16:15:59 +0100360static const struct dev_pm_ops max77693_pm = {
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200361 .suspend = max77693_suspend,
362 .resume = max77693_resume,
363};
364
Andrzej Hajda46571852013-09-27 09:27:46 +0200365#ifdef CONFIG_OF
Krzysztof Kozlowski5ce9a552014-05-13 12:58:52 +0200366static const struct of_device_id max77693_dt_match[] = {
Andrzej Hajda46571852013-09-27 09:27:46 +0200367 { .compatible = "maxim,max77693" },
368 {},
369};
370#endif
371
Chanwoo Choi83871c02012-05-14 22:50:39 +0200372static struct i2c_driver max77693_i2c_driver = {
373 .driver = {
374 .name = "max77693",
375 .owner = THIS_MODULE,
Chanwoo Choi6592ebb2012-05-14 22:54:20 +0200376 .pm = &max77693_pm,
Andrzej Hajda46571852013-09-27 09:27:46 +0200377 .of_match_table = of_match_ptr(max77693_dt_match),
Chanwoo Choi83871c02012-05-14 22:50:39 +0200378 },
379 .probe = max77693_i2c_probe,
380 .remove = max77693_i2c_remove,
381 .id_table = max77693_i2c_id,
382};
383
384static int __init max77693_i2c_init(void)
385{
386 return i2c_add_driver(&max77693_i2c_driver);
387}
388/* init early so consumer devices can complete system boot */
389subsys_initcall(max77693_i2c_init);
390
391static void __exit max77693_i2c_exit(void)
392{
393 i2c_del_driver(&max77693_i2c_driver);
394}
395module_exit(max77693_i2c_exit);
396
397MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
398MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
399MODULE_LICENSE("GPL");