Merge tag 'hwlock-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc...
[linux-block.git] / drivers / mfd / max77693.c
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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
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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>
71c7f93e 17#include <linux/of.h>
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18#include <linux/pm_runtime.h>
19#include <linux/mutex.h>
20#include <linux/mfd/core.h>
21#include <linux/mfd/max77693.h>
61b305cd 22#include <linux/mfd/max77693-common.h>
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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
7c0517b1 31static const struct mfd_cell max77693_devs[] = {
83871c00 32 { .name = "max77693-pmic", },
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33 {
34 .name = "max77693-charger",
35 .of_compatible = "maxim,max77693-charger",
36 },
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37 {
38 .name = "max77693-muic",
39 .of_compatible = "maxim,max77693-muic",
40 },
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41 {
42 .name = "max77693-haptic",
43 .of_compatible = "maxim,max77693-haptic",
44 },
a0bc6072 45 {
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46 .name = "max77693-led",
47 .of_compatible = "maxim,max77693-led",
a0bc6072 48 },
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49};
50
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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
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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
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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
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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
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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
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152static int max77693_i2c_probe(struct i2c_client *i2c,
153 const struct i2c_device_id *id)
154{
155 struct max77693_dev *max77693;
d0540f91 156 unsigned int reg_data;
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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
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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
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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 }
83871c00 177
d0540f91 178 ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
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179 &reg_data);
180 if (ret < 0) {
83871c00 181 dev_err(max77693->dev, "device not found on this channel\n");
2429d863 182 return ret;
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183 } else
184 dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
185
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186 max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
187 if (IS_ERR(max77693->i2c_muic)) {
ad09dd6a 188 dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
ad28edcb 189 return PTR_ERR(max77693->i2c_muic);
ad09dd6a 190 }
61b305cd 191 i2c_set_clientdata(max77693->i2c_muic, max77693);
83871c00 192
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193 max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
194 if (IS_ERR(max77693->i2c_haptic)) {
ad09dd6a 195 dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
ad28edcb 196 ret = PTR_ERR(max77693->i2c_haptic);
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197 goto err_i2c_haptic;
198 }
61b305cd 199 i2c_set_clientdata(max77693->i2c_haptic, max77693);
83871c00 200
61b305cd 201 max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
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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
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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 */
61b305cd 215 max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
75ad1327 216 &max77693_regmap_muic_config);
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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);
efbf4922 221 goto err_regmap;
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222 }
223
342d669c 224 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
f5f082eb 225 IRQF_ONESHOT | IRQF_SHARED, 0,
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226 &max77693_led_irq_chip,
227 &max77693->irq_data_led);
228 if (ret) {
229 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
efbf4922 230 goto err_regmap;
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231 }
232
233 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
f5f082eb 234 IRQF_ONESHOT | IRQF_SHARED, 0,
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235 &max77693_topsys_irq_chip,
236 &max77693->irq_data_topsys);
237 if (ret) {
238 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
239 goto err_irq_topsys;
240 }
241
242 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
f5f082eb 243 IRQF_ONESHOT | IRQF_SHARED, 0,
342d669c 244 &max77693_charger_irq_chip,
61b305cd 245 &max77693->irq_data_chg);
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246 if (ret) {
247 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
248 goto err_irq_charger;
249 }
250
43fc9396 251 ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
f5f082eb 252 IRQF_ONESHOT | IRQF_SHARED, 0,
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253 &max77693_muic_irq_chip,
254 &max77693->irq_data_muic);
255 if (ret) {
256 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
257 goto err_irq_muic;
258 }
6592ebb3 259
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260 /* Unmask interrupts from all blocks in interrupt source register */
261 ret = regmap_update_bits(max77693->regmap,
262 MAX77693_PMIC_REG_INTSRC_MASK,
263 SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
264 if (ret < 0) {
265 dev_err(max77693->dev,
266 "Could not unmask interrupts in INTSRC: %d\n",
267 ret);
268 goto err_intsrc;
269 }
270
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271 pm_runtime_set_active(max77693->dev);
272
273 ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
0848c94f 274 ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
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275 if (ret < 0)
276 goto err_mfd;
277
278 return ret;
279
280err_mfd:
342d669c 281 mfd_remove_devices(max77693->dev);
c0acb814 282err_intsrc:
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283 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
284err_irq_muic:
61b305cd 285 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
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286err_irq_charger:
287 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
288err_irq_topsys:
289 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
efbf4922 290err_regmap:
61b305cd 291 i2c_unregister_device(max77693->i2c_haptic);
ad09dd6a 292err_i2c_haptic:
61b305cd 293 i2c_unregister_device(max77693->i2c_muic);
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294 return ret;
295}
296
297static int max77693_i2c_remove(struct i2c_client *i2c)
298{
299 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
300
301 mfd_remove_devices(max77693->dev);
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302
303 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
61b305cd 304 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
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305 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
306 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
307
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308 i2c_unregister_device(max77693->i2c_muic);
309 i2c_unregister_device(max77693->i2c_haptic);
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310
311 return 0;
312}
313
314static const struct i2c_device_id max77693_i2c_id[] = {
315 { "max77693", TYPE_MAX77693 },
316 { }
317};
318MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
319
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320static int max77693_suspend(struct device *dev)
321{
1b5420e1 322 struct i2c_client *i2c = to_i2c_client(dev);
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323 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
324
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325 if (device_may_wakeup(dev)) {
326 enable_irq_wake(max77693->irq);
327 disable_irq(max77693->irq);
328 }
329
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330 return 0;
331}
332
333static int max77693_resume(struct device *dev)
334{
1b5420e1 335 struct i2c_client *i2c = to_i2c_client(dev);
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336 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
337
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338 if (device_may_wakeup(dev)) {
339 disable_irq_wake(max77693->irq);
340 enable_irq(max77693->irq);
341 }
342
343 return 0;
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344}
345
12477a32 346static const struct dev_pm_ops max77693_pm = {
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347 .suspend = max77693_suspend,
348 .resume = max77693_resume,
349};
350
4657185c 351#ifdef CONFIG_OF
5ce9a55b 352static const struct of_device_id max77693_dt_match[] = {
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353 { .compatible = "maxim,max77693" },
354 {},
355};
073d4aca 356MODULE_DEVICE_TABLE(of, max77693_dt_match);
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357#endif
358
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359static struct i2c_driver max77693_i2c_driver = {
360 .driver = {
361 .name = "max77693",
6592ebb3 362 .pm = &max77693_pm,
4657185c 363 .of_match_table = of_match_ptr(max77693_dt_match),
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364 },
365 .probe = max77693_i2c_probe,
366 .remove = max77693_i2c_remove,
367 .id_table = max77693_i2c_id,
368};
369
073d4aca 370module_i2c_driver(max77693_i2c_driver);
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371
372MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
373MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
374MODULE_LICENSE("GPL");