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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", }, | |
83871c00 CC |
47 | { .name = "max77693-muic", }, |
48 | { .name = "max77693-haptic", }, | |
a0bc6072 JA |
49 | { |
50 | .name = "max77693-flash", | |
51 | .of_compatible = "maxim,max77693-flash", | |
52 | }, | |
83871c00 CC |
53 | }; |
54 | ||
83871c00 CC |
55 | static const struct regmap_config max77693_regmap_config = { |
56 | .reg_bits = 8, | |
57 | .val_bits = 8, | |
58 | .max_register = MAX77693_PMIC_REG_END, | |
59 | }; | |
60 | ||
342d669c RB |
61 | static const struct regmap_irq max77693_led_irqs[] = { |
62 | { .mask = LED_IRQ_FLED2_OPEN, }, | |
63 | { .mask = LED_IRQ_FLED2_SHORT, }, | |
64 | { .mask = LED_IRQ_FLED1_OPEN, }, | |
65 | { .mask = LED_IRQ_FLED1_SHORT, }, | |
66 | { .mask = LED_IRQ_MAX_FLASH, }, | |
67 | }; | |
68 | ||
69 | static const struct regmap_irq_chip max77693_led_irq_chip = { | |
70 | .name = "max77693-led", | |
71 | .status_base = MAX77693_LED_REG_FLASH_INT, | |
72 | .mask_base = MAX77693_LED_REG_FLASH_INT_MASK, | |
73 | .mask_invert = false, | |
74 | .num_regs = 1, | |
75 | .irqs = max77693_led_irqs, | |
76 | .num_irqs = ARRAY_SIZE(max77693_led_irqs), | |
77 | }; | |
78 | ||
79 | static const struct regmap_irq max77693_topsys_irqs[] = { | |
80 | { .mask = TOPSYS_IRQ_T120C_INT, }, | |
81 | { .mask = TOPSYS_IRQ_T140C_INT, }, | |
82 | { .mask = TOPSYS_IRQ_LOWSYS_INT, }, | |
83 | }; | |
84 | ||
85 | static const struct regmap_irq_chip max77693_topsys_irq_chip = { | |
86 | .name = "max77693-topsys", | |
87 | .status_base = MAX77693_PMIC_REG_TOPSYS_INT, | |
88 | .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK, | |
89 | .mask_invert = false, | |
90 | .num_regs = 1, | |
91 | .irqs = max77693_topsys_irqs, | |
92 | .num_irqs = ARRAY_SIZE(max77693_topsys_irqs), | |
93 | }; | |
94 | ||
95 | static const struct regmap_irq max77693_charger_irqs[] = { | |
96 | { .mask = CHG_IRQ_BYP_I, }, | |
97 | { .mask = CHG_IRQ_THM_I, }, | |
98 | { .mask = CHG_IRQ_BAT_I, }, | |
99 | { .mask = CHG_IRQ_CHG_I, }, | |
100 | { .mask = CHG_IRQ_CHGIN_I, }, | |
101 | }; | |
102 | ||
103 | static const struct regmap_irq_chip max77693_charger_irq_chip = { | |
104 | .name = "max77693-charger", | |
105 | .status_base = MAX77693_CHG_REG_CHG_INT, | |
106 | .mask_base = MAX77693_CHG_REG_CHG_INT_MASK, | |
107 | .mask_invert = false, | |
108 | .num_regs = 1, | |
109 | .irqs = max77693_charger_irqs, | |
110 | .num_irqs = ARRAY_SIZE(max77693_charger_irqs), | |
111 | }; | |
112 | ||
75ad1327 KK |
113 | static const struct regmap_config max77693_regmap_muic_config = { |
114 | .reg_bits = 8, | |
115 | .val_bits = 8, | |
116 | .max_register = MAX77693_MUIC_REG_END, | |
117 | }; | |
118 | ||
342d669c RB |
119 | static const struct regmap_irq max77693_muic_irqs[] = { |
120 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, }, | |
121 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, }, | |
122 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, }, | |
123 | { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, }, | |
124 | ||
125 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, }, | |
126 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, }, | |
127 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, }, | |
128 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, }, | |
129 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, }, | |
130 | { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, }, | |
131 | ||
132 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, }, | |
133 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, }, | |
134 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, }, | |
135 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, }, | |
136 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, }, | |
137 | { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, }, | |
138 | }; | |
139 | ||
140 | static const struct regmap_irq_chip max77693_muic_irq_chip = { | |
141 | .name = "max77693-muic", | |
142 | .status_base = MAX77693_MUIC_REG_INT1, | |
143 | .mask_base = MAX77693_MUIC_REG_INTMASK1, | |
144 | .mask_invert = true, | |
145 | .num_regs = 3, | |
146 | .irqs = max77693_muic_irqs, | |
147 | .num_irqs = ARRAY_SIZE(max77693_muic_irqs), | |
148 | }; | |
149 | ||
83871c00 CC |
150 | static int max77693_i2c_probe(struct i2c_client *i2c, |
151 | const struct i2c_device_id *id) | |
152 | { | |
153 | struct max77693_dev *max77693; | |
d0540f91 | 154 | unsigned int reg_data; |
83871c00 CC |
155 | int ret = 0; |
156 | ||
157 | max77693 = devm_kzalloc(&i2c->dev, | |
158 | sizeof(struct max77693_dev), GFP_KERNEL); | |
159 | if (max77693 == NULL) | |
160 | return -ENOMEM; | |
161 | ||
83871c00 CC |
162 | i2c_set_clientdata(i2c, max77693); |
163 | max77693->dev = &i2c->dev; | |
164 | max77693->i2c = i2c; | |
165 | max77693->irq = i2c->irq; | |
166 | max77693->type = id->driver_data; | |
167 | ||
2429d863 AL |
168 | max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config); |
169 | if (IS_ERR(max77693->regmap)) { | |
170 | ret = PTR_ERR(max77693->regmap); | |
171 | dev_err(max77693->dev, "failed to allocate register map: %d\n", | |
172 | ret); | |
173 | return ret; | |
174 | } | |
83871c00 | 175 | |
d0540f91 | 176 | ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2, |
2429d863 AL |
177 | ®_data); |
178 | if (ret < 0) { | |
83871c00 | 179 | dev_err(max77693->dev, "device not found on this channel\n"); |
2429d863 | 180 | return ret; |
83871c00 CC |
181 | } else |
182 | dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); | |
183 | ||
184 | max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); | |
ad09dd6a KK |
185 | if (!max77693->muic) { |
186 | dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n"); | |
187 | return -ENODEV; | |
188 | } | |
83871c00 CC |
189 | i2c_set_clientdata(max77693->muic, max77693); |
190 | ||
191 | max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); | |
ad09dd6a KK |
192 | if (!max77693->haptic) { |
193 | dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n"); | |
194 | ret = -ENODEV; | |
195 | goto err_i2c_haptic; | |
196 | } | |
83871c00 CC |
197 | i2c_set_clientdata(max77693->haptic, max77693); |
198 | ||
b186b124 CC |
199 | /* |
200 | * Initialize register map for MUIC device because use regmap-muic | |
201 | * instance of MUIC device when irq of max77693 is initialized | |
202 | * before call max77693-muic probe() function. | |
203 | */ | |
204 | max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic, | |
75ad1327 | 205 | &max77693_regmap_muic_config); |
b186b124 CC |
206 | if (IS_ERR(max77693->regmap_muic)) { |
207 | ret = PTR_ERR(max77693->regmap_muic); | |
208 | dev_err(max77693->dev, | |
209 | "failed to allocate register map: %d\n", ret); | |
2429d863 | 210 | goto err_regmap_muic; |
b186b124 CC |
211 | } |
212 | ||
342d669c RB |
213 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
214 | IRQF_ONESHOT | IRQF_SHARED | | |
215 | IRQF_TRIGGER_FALLING, 0, | |
216 | &max77693_led_irq_chip, | |
217 | &max77693->irq_data_led); | |
218 | if (ret) { | |
219 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
220 | goto err_regmap_muic; | |
221 | } | |
222 | ||
223 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
224 | IRQF_ONESHOT | IRQF_SHARED | | |
225 | IRQF_TRIGGER_FALLING, 0, | |
226 | &max77693_topsys_irq_chip, | |
227 | &max77693->irq_data_topsys); | |
228 | if (ret) { | |
229 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
230 | goto err_irq_topsys; | |
231 | } | |
232 | ||
233 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
234 | IRQF_ONESHOT | IRQF_SHARED | | |
235 | IRQF_TRIGGER_FALLING, 0, | |
236 | &max77693_charger_irq_chip, | |
237 | &max77693->irq_data_charger); | |
238 | if (ret) { | |
239 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
240 | goto err_irq_charger; | |
241 | } | |
242 | ||
243 | ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, | |
244 | IRQF_ONESHOT | IRQF_SHARED | | |
245 | IRQF_TRIGGER_FALLING, 0, | |
246 | &max77693_muic_irq_chip, | |
247 | &max77693->irq_data_muic); | |
248 | if (ret) { | |
249 | dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); | |
250 | goto err_irq_muic; | |
251 | } | |
6592ebb3 | 252 | |
83871c00 CC |
253 | pm_runtime_set_active(max77693->dev); |
254 | ||
255 | ret = mfd_add_devices(max77693->dev, -1, max77693_devs, | |
0848c94f | 256 | ARRAY_SIZE(max77693_devs), NULL, 0, NULL); |
83871c00 CC |
257 | if (ret < 0) |
258 | goto err_mfd; | |
259 | ||
260 | return ret; | |
261 | ||
262 | err_mfd: | |
342d669c RB |
263 | mfd_remove_devices(max77693->dev); |
264 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); | |
265 | err_irq_muic: | |
266 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); | |
267 | err_irq_charger: | |
268 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); | |
269 | err_irq_topsys: | |
270 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
2429d863 | 271 | err_regmap_muic: |
83871c00 | 272 | i2c_unregister_device(max77693->haptic); |
ad09dd6a KK |
273 | err_i2c_haptic: |
274 | i2c_unregister_device(max77693->muic); | |
83871c00 CC |
275 | return ret; |
276 | } | |
277 | ||
278 | static int max77693_i2c_remove(struct i2c_client *i2c) | |
279 | { | |
280 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
281 | ||
282 | mfd_remove_devices(max77693->dev); | |
342d669c RB |
283 | |
284 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); | |
285 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); | |
286 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); | |
287 | regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); | |
288 | ||
83871c00 CC |
289 | i2c_unregister_device(max77693->muic); |
290 | i2c_unregister_device(max77693->haptic); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | static const struct i2c_device_id max77693_i2c_id[] = { | |
296 | { "max77693", TYPE_MAX77693 }, | |
297 | { } | |
298 | }; | |
299 | MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); | |
300 | ||
6592ebb3 CC |
301 | static int max77693_suspend(struct device *dev) |
302 | { | |
303 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
304 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
305 | ||
342d669c RB |
306 | if (device_may_wakeup(dev)) { |
307 | enable_irq_wake(max77693->irq); | |
308 | disable_irq(max77693->irq); | |
309 | } | |
310 | ||
6592ebb3 CC |
311 | return 0; |
312 | } | |
313 | ||
314 | static int max77693_resume(struct device *dev) | |
315 | { | |
316 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
317 | struct max77693_dev *max77693 = i2c_get_clientdata(i2c); | |
318 | ||
342d669c RB |
319 | if (device_may_wakeup(dev)) { |
320 | disable_irq_wake(max77693->irq); | |
321 | enable_irq(max77693->irq); | |
322 | } | |
323 | ||
324 | return 0; | |
6592ebb3 CC |
325 | } |
326 | ||
12477a32 | 327 | static const struct dev_pm_ops max77693_pm = { |
6592ebb3 CC |
328 | .suspend = max77693_suspend, |
329 | .resume = max77693_resume, | |
330 | }; | |
331 | ||
4657185c | 332 | #ifdef CONFIG_OF |
5ce9a55b | 333 | static const struct of_device_id max77693_dt_match[] = { |
4657185c AH |
334 | { .compatible = "maxim,max77693" }, |
335 | {}, | |
336 | }; | |
337 | #endif | |
338 | ||
83871c00 CC |
339 | static struct i2c_driver max77693_i2c_driver = { |
340 | .driver = { | |
341 | .name = "max77693", | |
342 | .owner = THIS_MODULE, | |
6592ebb3 | 343 | .pm = &max77693_pm, |
4657185c | 344 | .of_match_table = of_match_ptr(max77693_dt_match), |
83871c00 CC |
345 | }, |
346 | .probe = max77693_i2c_probe, | |
347 | .remove = max77693_i2c_remove, | |
348 | .id_table = max77693_i2c_id, | |
349 | }; | |
350 | ||
351 | static int __init max77693_i2c_init(void) | |
352 | { | |
353 | return i2c_add_driver(&max77693_i2c_driver); | |
354 | } | |
355 | /* init early so consumer devices can complete system boot */ | |
356 | subsys_initcall(max77693_i2c_init); | |
357 | ||
358 | static void __exit max77693_i2c_exit(void) | |
359 | { | |
360 | i2c_del_driver(&max77693_i2c_driver); | |
361 | } | |
362 | module_exit(max77693_i2c_exit); | |
363 | ||
364 | MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); | |
365 | MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>"); | |
366 | MODULE_LICENSE("GPL"); |