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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> | |
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 | ||
7c0517b1 | 44 | static const struct mfd_cell max77693_devs[] = { |
83871c00 CC |
45 | { .name = "max77693-pmic", }, |
46 | { .name = "max77693-charger", }, | |
47 | { .name = "max77693-flash", }, | |
48 | { .name = "max77693-muic", }, | |
49 | { .name = "max77693-haptic", }, | |
50 | }; | |
51 | ||
83871c00 CC |
52 | static const struct regmap_config max77693_regmap_config = { |
53 | .reg_bits = 8, | |
54 | .val_bits = 8, | |
55 | .max_register = MAX77693_PMIC_REG_END, | |
56 | }; | |
57 | ||
342d669c RB |
58 | static const struct regmap_irq max77693_led_irqs[] = { |
59 | { .mask = LED_IRQ_FLED2_OPEN, }, | |
60 | { .mask = LED_IRQ_FLED2_SHORT, }, | |
61 | { .mask = LED_IRQ_FLED1_OPEN, }, | |
62 | { .mask = LED_IRQ_FLED1_SHORT, }, | |
63 | { .mask = LED_IRQ_MAX_FLASH, }, | |
64 | }; | |
65 | ||
66 | static const struct regmap_irq_chip max77693_led_irq_chip = { | |
67 | .name = "max77693-led", | |
68 | .status_base = MAX77693_LED_REG_FLASH_INT, | |
69 | .mask_base = MAX77693_LED_REG_FLASH_INT_MASK, | |
70 | .mask_invert = false, | |
71 | .num_regs = 1, | |
72 | .irqs = max77693_led_irqs, | |
73 | .num_irqs = ARRAY_SIZE(max77693_led_irqs), | |
74 | }; | |
75 | ||
76 | static const struct regmap_irq max77693_topsys_irqs[] = { | |
77 | { .mask = TOPSYS_IRQ_T120C_INT, }, | |
78 | { .mask = TOPSYS_IRQ_T140C_INT, }, | |
79 | { .mask = TOPSYS_IRQ_LOWSYS_INT, }, | |
80 | }; | |
81 | ||
82 | static const struct regmap_irq_chip max77693_topsys_irq_chip = { | |
83 | .name = "max77693-topsys", | |
84 | .status_base = MAX77693_PMIC_REG_TOPSYS_INT, | |
85 | .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK, | |
86 | .mask_invert = false, | |
87 | .num_regs = 1, | |
88 | .irqs = max77693_topsys_irqs, | |
89 | .num_irqs = ARRAY_SIZE(max77693_topsys_irqs), | |
90 | }; | |
91 | ||
92 | static const struct regmap_irq max77693_charger_irqs[] = { | |
93 | { .mask = CHG_IRQ_BYP_I, }, | |
94 | { .mask = CHG_IRQ_THM_I, }, | |
95 | { .mask = CHG_IRQ_BAT_I, }, | |
96 | { .mask = CHG_IRQ_CHG_I, }, | |
97 | { .mask = CHG_IRQ_CHGIN_I, }, | |
98 | }; | |
99 | ||
100 | static const struct regmap_irq_chip max77693_charger_irq_chip = { | |
101 | .name = "max77693-charger", | |
102 | .status_base = MAX77693_CHG_REG_CHG_INT, | |
103 | .mask_base = MAX77693_CHG_REG_CHG_INT_MASK, | |
104 | .mask_invert = false, | |
105 | .num_regs = 1, | |
106 | .irqs = max77693_charger_irqs, | |
107 | .num_irqs = ARRAY_SIZE(max77693_charger_irqs), | |
108 | }; | |
109 | ||
75ad1327 KK |
110 | static 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 | ||
342d669c RB |
116 | static const struct regmap_irq max77693_muic_irqs[] = { |
117 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, }, | |
118 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, }, | |
119 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, }, | |
120 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, }, | |
121 | ||
122 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, }, | |
123 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, }, | |
124 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, }, | |
125 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, }, | |
126 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, }, | |
127 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, }, | |
128 | ||
129 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, }, | |
130 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, }, | |
131 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, }, | |
132 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, }, | |
133 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, }, | |
134 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, }, | |
135 | }; | |
136 | ||
137 | static const struct regmap_irq_chip max77693_muic_irq_chip = { | |
138 | .name = "max77693-muic", | |
139 | .status_base = MAX77693_MUIC_REG_INT1, | |
140 | .mask_base = MAX77693_MUIC_REG_INTMASK1, | |
141 | .mask_invert = true, | |
142 | .num_regs = 3, | |
143 | .irqs = max77693_muic_irqs, | |
144 | .num_irqs = ARRAY_SIZE(max77693_muic_irqs), | |
145 | }; | |
146 | ||
83871c00 CC |
147 | static int max77693_i2c_probe(struct i2c_client *i2c, |
148 | const struct i2c_device_id *id) | |
149 | { | |
150 | struct max77693_dev *max77693; | |
d0540f91 | 151 | unsigned int reg_data; |
83871c00 CC |
152 | int ret = 0; |
153 | ||
154 | max77693 = devm_kzalloc(&i2c->dev, | |
155 | sizeof(struct max77693_dev), GFP_KERNEL); | |
156 | if (max77693 == NULL) | |
157 | return -ENOMEM; | |
158 | ||
83871c00 CC |
159 | i2c_set_clientdata(i2c, max77693); |
160 | max77693->dev = &i2c->dev; | |
161 | max77693->i2c = i2c; | |
162 | max77693->irq = i2c->irq; | |
163 | max77693->type = id->driver_data; | |
164 | ||
2429d863 AL |
165 | max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config); |
166 | if (IS_ERR(max77693->regmap)) { | |
167 | ret = PTR_ERR(max77693->regmap); | |
168 | dev_err(max77693->dev, "failed to allocate register map: %d\n", | |
169 | ret); | |
170 | return ret; | |
171 | } | |
83871c00 | 172 | |
d0540f91 | 173 | ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2, |
2429d863 AL |
174 | ®_data); |
175 | if (ret < 0) { | |
83871c00 | 176 | dev_err(max77693->dev, "device not found on this channel\n"); |
2429d863 | 177 | return ret; |
83871c00 CC |
178 | } else |
179 | dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); | |
180 | ||
181 | max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); | |
ad09dd6a KK |
182 | if (!max77693->muic) { |
183 | dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n"); | |
184 | return -ENODEV; | |
185 | } | |
83871c00 CC |
186 | i2c_set_clientdata(max77693->muic, max77693); |
187 | ||
188 | max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); | |
ad09dd6a KK |
189 | if (!max77693->haptic) { |
190 | dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n"); | |
191 | ret = -ENODEV; | |
192 | goto err_i2c_haptic; | |
193 | } | |
83871c00 CC |
194 | i2c_set_clientdata(max77693->haptic, max77693); |
195 | ||
b186b124 CC |
196 | /* |
197 | * Initialize register map for MUIC device because use regmap-muic | |
198 | * instance of MUIC device when irq of max77693 is initialized | |
199 | * before call max77693-muic probe() function. | |
200 | */ | |
201 | max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic, | |
75ad1327 | 202 | &max77693_regmap_muic_config); |
b186b124 CC |
203 | if (IS_ERR(max77693->regmap_muic)) { |
204 | ret = PTR_ERR(max77693->regmap_muic); | |
205 | dev_err(max77693->dev, | |
206 | "failed to allocate register map: %d\n", ret); | |
2429d863 | 207 | goto err_regmap_muic; |
b186b124 CC |
208 | } |
209 | ||
342d669c RB |
210 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
211 | IRQF_ONESHOT | IRQF_SHARED | | |
212 | IRQF_TRIGGER_FALLING, 0, | |
213 | &max77693_led_irq_chip, | |
214 | &max77693->irq_data_led); | |
215 | if (ret) { | |
216 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
217 | goto err_regmap_muic; | |
218 | } | |
219 | ||
220 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
221 | IRQF_ONESHOT | IRQF_SHARED | | |
222 | IRQF_TRIGGER_FALLING, 0, | |
223 | &max77693_topsys_irq_chip, | |
224 | &max77693->irq_data_topsys); | |
225 | if (ret) { | |
226 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
227 | goto err_irq_topsys; | |
228 | } | |
229 | ||
230 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
231 | IRQF_ONESHOT | IRQF_SHARED | | |
232 | IRQF_TRIGGER_FALLING, 0, | |
233 | &max77693_charger_irq_chip, | |
234 | &max77693->irq_data_charger); | |
235 | if (ret) { | |
236 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
237 | goto err_irq_charger; | |
238 | } | |
239 | ||
240 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
241 | IRQF_ONESHOT | IRQF_SHARED | | |
242 | IRQF_TRIGGER_FALLING, 0, | |
243 | &max77693_muic_irq_chip, | |
244 | &max77693->irq_data_muic); | |
245 | if (ret) { | |
246 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
247 | goto err_irq_muic; | |
248 | } | |
6592ebb3 | 249 | |
83871c00 CC |
250 | pm_runtime_set_active(max77693->dev); |
251 | ||
252 | ret = mfd_add_devices(max77693->dev, -1, max77693_devs, | |
0848c94f | 253 | ARRAY_SIZE(max77693_devs), NULL, 0, NULL); |
83871c00 CC |
254 | if (ret < 0) |
255 | goto err_mfd; | |
256 | ||
257 | return ret; | |
258 | ||
259 | err_mfd: | |
342d669c RB |
260 | mfd_remove_devices(max77693->dev); |
261 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); | |
262 | err_irq_muic: | |
263 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); | |
264 | err_irq_charger: | |
265 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); | |
266 | err_irq_topsys: | |
267 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
2429d863 | 268 | err_regmap_muic: |
83871c00 | 269 | i2c_unregister_device(max77693->haptic); |
ad09dd6a KK |
270 | err_i2c_haptic: |
271 | i2c_unregister_device(max77693->muic); | |
83871c00 CC |
272 | return ret; |
273 | } | |
274 | ||
275 | static int max77693_i2c_remove(struct i2c_client *i2c) | |
276 | { | |
277 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
278 | ||
279 | mfd_remove_devices(max77693->dev); | |
342d669c RB |
280 | |
281 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); | |
282 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); | |
283 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); | |
284 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
285 | ||
83871c00 CC |
286 | i2c_unregister_device(max77693->muic); |
287 | i2c_unregister_device(max77693->haptic); | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static const struct i2c_device_id max77693_i2c_id[] = { | |
293 | { "max77693", TYPE_MAX77693 }, | |
294 | { } | |
295 | }; | |
296 | MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); | |
297 | ||
6592ebb3 CC |
298 | static int max77693_suspend(struct device *dev) |
299 | { | |
300 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
301 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
302 | ||
342d669c RB |
303 | if (device_may_wakeup(dev)) { |
304 | enable_irq_wake(max77693->irq); | |
305 | disable_irq(max77693->irq); | |
306 | } | |
307 | ||
6592ebb3 CC |
308 | return 0; |
309 | } | |
310 | ||
311 | static int max77693_resume(struct device *dev) | |
312 | { | |
313 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
314 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
315 | ||
342d669c RB |
316 | if (device_may_wakeup(dev)) { |
317 | disable_irq_wake(max77693->irq); | |
318 | enable_irq(max77693->irq); | |
319 | } | |
320 | ||
321 | return 0; | |
6592ebb3 CC |
322 | } |
323 | ||
12477a32 | 324 | static const struct dev_pm_ops max77693_pm = { |
6592ebb3 CC |
325 | .suspend = max77693_suspend, |
326 | .resume = max77693_resume, | |
327 | }; | |
328 | ||
4657185c | 329 | #ifdef CONFIG_OF |
5ce9a55b | 330 | static const struct of_device_id max77693_dt_match[] = { |
4657185c AH |
331 | { .compatible = "maxim,max77693" }, |
332 | {}, | |
333 | }; | |
334 | #endif | |
335 | ||
83871c00 CC |
336 | static struct i2c_driver max77693_i2c_driver = { |
337 | .driver = { | |
338 | .name = "max77693", | |
339 | .owner = THIS_MODULE, | |
6592ebb3 | 340 | .pm = &max77693_pm, |
4657185c | 341 | .of_match_table = of_match_ptr(max77693_dt_match), |
83871c00 CC |
342 | }, |
343 | .probe = max77693_i2c_probe, | |
344 | .remove = max77693_i2c_remove, | |
345 | .id_table = max77693_i2c_id, | |
346 | }; | |
347 | ||
348 | static int __init max77693_i2c_init(void) | |
349 | { | |
350 | return i2c_add_driver(&max77693_i2c_driver); | |
351 | } | |
352 | /* init early so consumer devices can complete system boot */ | |
353 | subsys_initcall(max77693_i2c_init); | |
354 | ||
355 | static void __exit max77693_i2c_exit(void) | |
356 | { | |
357 | i2c_del_driver(&max77693_i2c_driver); | |
358 | } | |
359 | module_exit(max77693_i2c_exit); | |
360 | ||
361 | MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); | |
362 | MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>"); | |
363 | MODULE_LICENSE("GPL"); |