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83871c00 CC |
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> | |
71c7f93e | 31 | #include <linux/of.h> |
83871c00 CC |
32 | #include <linux/pm_runtime.h> |
33 | #include <linux/mutex.h> | |
34 | #include <linux/mfd/core.h> | |
35 | #include <linux/mfd/max77693.h> | |
61b305cd | 36 | #include <linux/mfd/max77693-common.h> |
83871c00 CC |
37 | #include <linux/mfd/max77693-private.h> |
38 | #include <linux/regulator/machine.h> | |
39 | #include <linux/regmap.h> | |
40 | ||
41 | #define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */ | |
42 | #define I2C_ADDR_MUIC (0x4A >> 1) | |
43 | #define I2C_ADDR_HAPTIC (0x90 >> 1) | |
44 | ||
7c0517b1 | 45 | static const struct mfd_cell max77693_devs[] = { |
83871c00 | 46 | { .name = "max77693-pmic", }, |
efa3ca41 KK |
47 | { |
48 | .name = "max77693-charger", | |
49 | .of_compatible = "maxim,max77693-charger", | |
50 | }, | |
83871c00 | 51 | { .name = "max77693-muic", }, |
d1bafd78 JK |
52 | { |
53 | .name = "max77693-haptic", | |
54 | .of_compatible = "maxim,max77693-haptic", | |
55 | }, | |
a0bc6072 | 56 | { |
224995d7 JA |
57 | .name = "max77693-led", |
58 | .of_compatible = "maxim,max77693-led", | |
a0bc6072 | 59 | }, |
83871c00 CC |
60 | }; |
61 | ||
83871c00 CC |
62 | static const struct regmap_config max77693_regmap_config = { |
63 | .reg_bits = 8, | |
64 | .val_bits = 8, | |
65 | .max_register = MAX77693_PMIC_REG_END, | |
66 | }; | |
67 | ||
342d669c RB |
68 | static const struct regmap_irq max77693_led_irqs[] = { |
69 | { .mask = LED_IRQ_FLED2_OPEN, }, | |
70 | { .mask = LED_IRQ_FLED2_SHORT, }, | |
71 | { .mask = LED_IRQ_FLED1_OPEN, }, | |
72 | { .mask = LED_IRQ_FLED1_SHORT, }, | |
73 | { .mask = LED_IRQ_MAX_FLASH, }, | |
74 | }; | |
75 | ||
76 | static const struct regmap_irq_chip max77693_led_irq_chip = { | |
77 | .name = "max77693-led", | |
78 | .status_base = MAX77693_LED_REG_FLASH_INT, | |
79 | .mask_base = MAX77693_LED_REG_FLASH_INT_MASK, | |
80 | .mask_invert = false, | |
81 | .num_regs = 1, | |
82 | .irqs = max77693_led_irqs, | |
83 | .num_irqs = ARRAY_SIZE(max77693_led_irqs), | |
84 | }; | |
85 | ||
86 | static const struct regmap_irq max77693_topsys_irqs[] = { | |
87 | { .mask = TOPSYS_IRQ_T120C_INT, }, | |
88 | { .mask = TOPSYS_IRQ_T140C_INT, }, | |
89 | { .mask = TOPSYS_IRQ_LOWSYS_INT, }, | |
90 | }; | |
91 | ||
92 | static const struct regmap_irq_chip max77693_topsys_irq_chip = { | |
93 | .name = "max77693-topsys", | |
94 | .status_base = MAX77693_PMIC_REG_TOPSYS_INT, | |
95 | .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK, | |
96 | .mask_invert = false, | |
97 | .num_regs = 1, | |
98 | .irqs = max77693_topsys_irqs, | |
99 | .num_irqs = ARRAY_SIZE(max77693_topsys_irqs), | |
100 | }; | |
101 | ||
102 | static const struct regmap_irq max77693_charger_irqs[] = { | |
103 | { .mask = CHG_IRQ_BYP_I, }, | |
104 | { .mask = CHG_IRQ_THM_I, }, | |
105 | { .mask = CHG_IRQ_BAT_I, }, | |
106 | { .mask = CHG_IRQ_CHG_I, }, | |
107 | { .mask = CHG_IRQ_CHGIN_I, }, | |
108 | }; | |
109 | ||
110 | static const struct regmap_irq_chip max77693_charger_irq_chip = { | |
111 | .name = "max77693-charger", | |
112 | .status_base = MAX77693_CHG_REG_CHG_INT, | |
113 | .mask_base = MAX77693_CHG_REG_CHG_INT_MASK, | |
114 | .mask_invert = false, | |
115 | .num_regs = 1, | |
116 | .irqs = max77693_charger_irqs, | |
117 | .num_irqs = ARRAY_SIZE(max77693_charger_irqs), | |
118 | }; | |
119 | ||
75ad1327 KK |
120 | static const struct regmap_config max77693_regmap_muic_config = { |
121 | .reg_bits = 8, | |
122 | .val_bits = 8, | |
123 | .max_register = MAX77693_MUIC_REG_END, | |
124 | }; | |
125 | ||
342d669c RB |
126 | static const struct regmap_irq max77693_muic_irqs[] = { |
127 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, }, | |
128 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, }, | |
129 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, }, | |
130 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, }, | |
131 | ||
132 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, }, | |
133 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, }, | |
134 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, }, | |
135 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, }, | |
136 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, }, | |
137 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, }, | |
138 | ||
139 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, }, | |
140 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, }, | |
141 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, }, | |
142 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, }, | |
143 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, }, | |
144 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, }, | |
145 | }; | |
146 | ||
147 | static const struct regmap_irq_chip max77693_muic_irq_chip = { | |
148 | .name = "max77693-muic", | |
149 | .status_base = MAX77693_MUIC_REG_INT1, | |
150 | .mask_base = MAX77693_MUIC_REG_INTMASK1, | |
151 | .mask_invert = true, | |
152 | .num_regs = 3, | |
153 | .irqs = max77693_muic_irqs, | |
154 | .num_irqs = ARRAY_SIZE(max77693_muic_irqs), | |
155 | }; | |
156 | ||
efbf4922 JK |
157 | static const struct regmap_config max77693_regmap_haptic_config = { |
158 | .reg_bits = 8, | |
159 | .val_bits = 8, | |
160 | .max_register = MAX77693_HAPTIC_REG_END, | |
161 | }; | |
162 | ||
83871c00 CC |
163 | static int max77693_i2c_probe(struct i2c_client *i2c, |
164 | const struct i2c_device_id *id) | |
165 | { | |
166 | struct max77693_dev *max77693; | |
d0540f91 | 167 | unsigned int reg_data; |
83871c00 CC |
168 | int ret = 0; |
169 | ||
170 | max77693 = devm_kzalloc(&i2c->dev, | |
171 | sizeof(struct max77693_dev), GFP_KERNEL); | |
172 | if (max77693 == NULL) | |
173 | return -ENOMEM; | |
174 | ||
83871c00 CC |
175 | i2c_set_clientdata(i2c, max77693); |
176 | max77693->dev = &i2c->dev; | |
177 | max77693->i2c = i2c; | |
178 | max77693->irq = i2c->irq; | |
179 | max77693->type = id->driver_data; | |
180 | ||
2429d863 AL |
181 | max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config); |
182 | if (IS_ERR(max77693->regmap)) { | |
183 | ret = PTR_ERR(max77693->regmap); | |
184 | dev_err(max77693->dev, "failed to allocate register map: %d\n", | |
185 | ret); | |
186 | return ret; | |
187 | } | |
83871c00 | 188 | |
d0540f91 | 189 | ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2, |
2429d863 AL |
190 | ®_data); |
191 | if (ret < 0) { | |
83871c00 | 192 | dev_err(max77693->dev, "device not found on this channel\n"); |
2429d863 | 193 | return ret; |
83871c00 CC |
194 | } else |
195 | dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); | |
196 | ||
61b305cd KK |
197 | max77693->i2c_muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); |
198 | if (!max77693->i2c_muic) { | |
ad09dd6a KK |
199 | dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n"); |
200 | return -ENODEV; | |
201 | } | |
61b305cd | 202 | i2c_set_clientdata(max77693->i2c_muic, max77693); |
83871c00 | 203 | |
61b305cd KK |
204 | max77693->i2c_haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); |
205 | if (!max77693->i2c_haptic) { | |
ad09dd6a KK |
206 | dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n"); |
207 | ret = -ENODEV; | |
208 | goto err_i2c_haptic; | |
209 | } | |
61b305cd | 210 | i2c_set_clientdata(max77693->i2c_haptic, max77693); |
83871c00 | 211 | |
61b305cd | 212 | max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic, |
efbf4922 JK |
213 | &max77693_regmap_haptic_config); |
214 | if (IS_ERR(max77693->regmap_haptic)) { | |
215 | ret = PTR_ERR(max77693->regmap_haptic); | |
216 | dev_err(max77693->dev, | |
217 | "failed to initialize haptic register map: %d\n", ret); | |
218 | goto err_regmap; | |
219 | } | |
220 | ||
b186b124 CC |
221 | /* |
222 | * Initialize register map for MUIC device because use regmap-muic | |
223 | * instance of MUIC device when irq of max77693 is initialized | |
224 | * before call max77693-muic probe() function. | |
225 | */ | |
61b305cd | 226 | max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic, |
75ad1327 | 227 | &max77693_regmap_muic_config); |
b186b124 CC |
228 | if (IS_ERR(max77693->regmap_muic)) { |
229 | ret = PTR_ERR(max77693->regmap_muic); | |
230 | dev_err(max77693->dev, | |
231 | "failed to allocate register map: %d\n", ret); | |
efbf4922 | 232 | goto err_regmap; |
b186b124 CC |
233 | } |
234 | ||
342d669c RB |
235 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
236 | IRQF_ONESHOT | IRQF_SHARED | | |
237 | IRQF_TRIGGER_FALLING, 0, | |
238 | &max77693_led_irq_chip, | |
239 | &max77693->irq_data_led); | |
240 | if (ret) { | |
241 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
efbf4922 | 242 | goto err_regmap; |
342d669c RB |
243 | } |
244 | ||
245 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
246 | IRQF_ONESHOT | IRQF_SHARED | | |
247 | IRQF_TRIGGER_FALLING, 0, | |
248 | &max77693_topsys_irq_chip, | |
249 | &max77693->irq_data_topsys); | |
250 | if (ret) { | |
251 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
252 | goto err_irq_topsys; | |
253 | } | |
254 | ||
255 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
256 | IRQF_ONESHOT | IRQF_SHARED | | |
257 | IRQF_TRIGGER_FALLING, 0, | |
258 | &max77693_charger_irq_chip, | |
61b305cd | 259 | &max77693->irq_data_chg); |
342d669c RB |
260 | if (ret) { |
261 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
262 | goto err_irq_charger; | |
263 | } | |
264 | ||
43fc9396 | 265 | ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq, |
342d669c RB |
266 | IRQF_ONESHOT | IRQF_SHARED | |
267 | IRQF_TRIGGER_FALLING, 0, | |
268 | &max77693_muic_irq_chip, | |
269 | &max77693->irq_data_muic); | |
270 | if (ret) { | |
271 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
272 | goto err_irq_muic; | |
273 | } | |
6592ebb3 | 274 | |
c0acb814 KK |
275 | /* Unmask interrupts from all blocks in interrupt source register */ |
276 | ret = regmap_update_bits(max77693->regmap, | |
277 | MAX77693_PMIC_REG_INTSRC_MASK, | |
278 | SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL); | |
279 | if (ret < 0) { | |
280 | dev_err(max77693->dev, | |
281 | "Could not unmask interrupts in INTSRC: %d\n", | |
282 | ret); | |
283 | goto err_intsrc; | |
284 | } | |
285 | ||
83871c00 CC |
286 | pm_runtime_set_active(max77693->dev); |
287 | ||
288 | ret = mfd_add_devices(max77693->dev, -1, max77693_devs, | |
0848c94f | 289 | ARRAY_SIZE(max77693_devs), NULL, 0, NULL); |
83871c00 CC |
290 | if (ret < 0) |
291 | goto err_mfd; | |
292 | ||
293 | return ret; | |
294 | ||
295 | err_mfd: | |
342d669c | 296 | mfd_remove_devices(max77693->dev); |
c0acb814 | 297 | err_intsrc: |
342d669c RB |
298 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); |
299 | err_irq_muic: | |
61b305cd | 300 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg); |
342d669c RB |
301 | err_irq_charger: |
302 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); | |
303 | err_irq_topsys: | |
304 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
efbf4922 | 305 | err_regmap: |
61b305cd | 306 | i2c_unregister_device(max77693->i2c_haptic); |
ad09dd6a | 307 | err_i2c_haptic: |
61b305cd | 308 | i2c_unregister_device(max77693->i2c_muic); |
83871c00 CC |
309 | return ret; |
310 | } | |
311 | ||
312 | static int max77693_i2c_remove(struct i2c_client *i2c) | |
313 | { | |
314 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
315 | ||
316 | mfd_remove_devices(max77693->dev); | |
342d669c RB |
317 | |
318 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); | |
61b305cd | 319 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg); |
342d669c RB |
320 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); |
321 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
322 | ||
61b305cd KK |
323 | i2c_unregister_device(max77693->i2c_muic); |
324 | i2c_unregister_device(max77693->i2c_haptic); | |
83871c00 CC |
325 | |
326 | return 0; | |
327 | } | |
328 | ||
329 | static const struct i2c_device_id max77693_i2c_id[] = { | |
330 | { "max77693", TYPE_MAX77693 }, | |
331 | { } | |
332 | }; | |
333 | MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); | |
334 | ||
6592ebb3 CC |
335 | static int max77693_suspend(struct device *dev) |
336 | { | |
337 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
338 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
339 | ||
342d669c RB |
340 | if (device_may_wakeup(dev)) { |
341 | enable_irq_wake(max77693->irq); | |
342 | disable_irq(max77693->irq); | |
343 | } | |
344 | ||
6592ebb3 CC |
345 | return 0; |
346 | } | |
347 | ||
348 | static int max77693_resume(struct device *dev) | |
349 | { | |
350 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
351 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
352 | ||
342d669c RB |
353 | if (device_may_wakeup(dev)) { |
354 | disable_irq_wake(max77693->irq); | |
355 | enable_irq(max77693->irq); | |
356 | } | |
357 | ||
358 | return 0; | |
6592ebb3 CC |
359 | } |
360 | ||
12477a32 | 361 | static const struct dev_pm_ops max77693_pm = { |
6592ebb3 CC |
362 | .suspend = max77693_suspend, |
363 | .resume = max77693_resume, | |
364 | }; | |
365 | ||
4657185c | 366 | #ifdef CONFIG_OF |
5ce9a55b | 367 | static const struct of_device_id max77693_dt_match[] = { |
4657185c AH |
368 | { .compatible = "maxim,max77693" }, |
369 | {}, | |
370 | }; | |
371 | #endif | |
372 | ||
83871c00 CC |
373 | static struct i2c_driver max77693_i2c_driver = { |
374 | .driver = { | |
375 | .name = "max77693", | |
6592ebb3 | 376 | .pm = &max77693_pm, |
4657185c | 377 | .of_match_table = of_match_ptr(max77693_dt_match), |
83871c00 CC |
378 | }, |
379 | .probe = max77693_i2c_probe, | |
380 | .remove = max77693_i2c_remove, | |
381 | .id_table = max77693_i2c_id, | |
382 | }; | |
383 | ||
384 | static 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 */ | |
389 | subsys_initcall(max77693_i2c_init); | |
390 | ||
391 | static void __exit max77693_i2c_exit(void) | |
392 | { | |
393 | i2c_del_driver(&max77693_i2c_driver); | |
394 | } | |
395 | module_exit(max77693_i2c_exit); | |
396 | ||
397 | MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); | |
398 | MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>"); | |
399 | MODULE_LICENSE("GPL"); |