summaryrefslogtreecommitdiffstats
path: root/drivers/mfd/max77693.c
blob: 596ed85cab3b5ac22c5379c50bc632029e4f28fd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
// SPDX-License-Identifier: GPL-2.0+
//
// max77693.c - mfd core driver for the MAX 77693
//
// Copyright (C) 2012 Samsung Electronics
// SangYoung Son <hello.son@samsung.com>
//
// This program is not provided / owned by Maxim Integrated Products.
//
// This driver is based on max8997.c

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
#include <linux/regulator/machine.h>
#include <linux/regmap.h>

#define I2C_ADDR_PMIC	(0xCC >> 1)	/* Charger, Flash LED */
#define I2C_ADDR_MUIC	(0x4A >> 1)
#define I2C_ADDR_HAPTIC	(0x90 >> 1)

static const struct mfd_cell max77693_devs[] = {
	{ .name = "max77693-pmic", },
	{
		.name = "max77693-charger",
		.of_compatible = "maxim,max77693-charger",
	},
	{
		.name = "max77693-muic",
		.of_compatible = "maxim,max77693-muic",
	},
	{
		.name = "max77693-haptic",
		.of_compatible = "maxim,max77693-haptic",
	},
	{
		.name = "max77693-led",
		.of_compatible = "maxim,max77693-led",
	},
};

static const struct regmap_config max77693_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_PMIC_REG_END,
};

static const struct regmap_irq max77693_led_irqs[] = {
	{ .mask = LED_IRQ_FLED2_OPEN,  },
	{ .mask = LED_IRQ_FLED2_SHORT, },
	{ .mask = LED_IRQ_FLED1_OPEN,  },
	{ .mask = LED_IRQ_FLED1_SHORT, },
	{ .mask = LED_IRQ_MAX_FLASH,   },
};

static const struct regmap_irq_chip max77693_led_irq_chip = {
	.name			= "max77693-led",
	.status_base		= MAX77693_LED_REG_FLASH_INT,
	.mask_base		= MAX77693_LED_REG_FLASH_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_led_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_led_irqs),
};

static const struct regmap_irq max77693_topsys_irqs[] = {
	{ .mask = TOPSYS_IRQ_T120C_INT,  },
	{ .mask = TOPSYS_IRQ_T140C_INT,  },
	{ .mask = TOPSYS_IRQ_LOWSYS_INT, },
};

static const struct regmap_irq_chip max77693_topsys_irq_chip = {
	.name			= "max77693-topsys",
	.status_base		= MAX77693_PMIC_REG_TOPSYS_INT,
	.mask_base		= MAX77693_PMIC_REG_TOPSYS_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_topsys_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_topsys_irqs),
};

static const struct regmap_irq max77693_charger_irqs[] = {
	{ .mask = CHG_IRQ_BYP_I,   },
	{ .mask = CHG_IRQ_THM_I,   },
	{ .mask = CHG_IRQ_BAT_I,   },
	{ .mask = CHG_IRQ_CHG_I,   },
	{ .mask = CHG_IRQ_CHGIN_I, },
};

static const struct regmap_irq_chip max77693_charger_irq_chip = {
	.name			= "max77693-charger",
	.status_base		= MAX77693_CHG_REG_CHG_INT,
	.mask_base		= MAX77693_CHG_REG_CHG_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_charger_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_charger_irqs),
};

static const struct regmap_config max77693_regmap_muic_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_MUIC_REG_END,
};

static const struct regmap_irq max77693_muic_irqs[] = {
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC,		},
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW,	},
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR,	},
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K,		},

	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP,	},
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN,	},
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR,	},
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP,		},
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT,	},
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM,		},

	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC,		},
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC,		},
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP,		},
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR,	},
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED,	},
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET,	},
};

static const struct regmap_irq_chip max77693_muic_irq_chip = {
	.name			= "max77693-muic",
	.status_base		= MAX77693_MUIC_REG_INT1,
	.mask_base		= MAX77693_MUIC_REG_INTMASK1,
	.mask_invert		= true,
	.num_regs		= 3,
	.irqs			= max77693_muic_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_muic_irqs),
};

static const struct regmap_config max77693_regmap_haptic_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_HAPTIC_REG_END,
};

static int max77693_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
	struct max77693_dev *max77693;
	unsigned int reg_data;
	int ret = 0;

	max77693 = devm_kzalloc(&i2c->dev,
			sizeof(struct max77693_dev), GFP_KERNEL);
	if (max77693 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max77693);
	max77693->dev = &i2c->dev;
	max77693->i2c = i2c;
	max77693->irq = i2c->irq;
	max77693->type = id->driver_data;

	max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
	if (IS_ERR(max77693->regmap)) {
		ret = PTR_ERR(max77693->regmap);
		dev_err(max77693->dev, "failed to allocate register map: %d\n",
				ret);
		return ret;
	}

	ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
				&reg_data);
	if (ret < 0) {
		dev_err(max77693->dev, "device not found on this channel\n");
		return ret;
	} else
		dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);

	max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
	if (IS_ERR(max77693->i2c_muic)) {
		dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
		return PTR_ERR(max77693->i2c_muic);
	}
	i2c_set_clientdata(max77693->i2c_muic, max77693);

	max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
	if (IS_ERR(max77693->i2c_haptic)) {
		dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
		ret = PTR_ERR(max77693->i2c_haptic);
		goto err_i2c_haptic;
	}
	i2c_set_clientdata(max77693->i2c_haptic, max77693);

	max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
					&max77693_regmap_haptic_config);
	if (IS_ERR(max77693->regmap_haptic)) {
		ret = PTR_ERR(max77693->regmap_haptic);
		dev_err(max77693->dev,
			"failed to initialize haptic register map: %d\n", ret);
		goto err_regmap;
	}

	/*
	 * Initialize register map for MUIC device because use regmap-muic
	 * instance of MUIC device when irq of max77693 is initialized
	 * before call max77693-muic probe() function.
	 */
	max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
					 &max77693_regmap_muic_config);
	if (IS_ERR(max77693->regmap_muic)) {
		ret = PTR_ERR(max77693->regmap_muic);
		dev_err(max77693->dev,
			"failed to allocate register map: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_led_irq_chip,
				&max77693->irq_data_led);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_topsys_irq_chip,
				&max77693->irq_data_topsys);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_topsys;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_charger_irq_chip,
				&max77693->irq_data_chg);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_charger;
	}

	ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_muic_irq_chip,
				&max77693->irq_data_muic);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_muic;
	}

	/* Unmask interrupts from all blocks in interrupt source register */
	ret = regmap_update_bits(max77693->regmap,
				MAX77693_PMIC_REG_INTSRC_MASK,
				SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
	if (ret < 0) {
		dev_err(max77693->dev,
			"Could not unmask interrupts in INTSRC: %d\n",
			ret);
		goto err_intsrc;
	}

	pm_runtime_set_active(max77693->dev);

	ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
			      ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
	if (ret < 0)
		goto err_mfd;

	return ret;

err_mfd:
	mfd_remove_devices(max77693->dev);
err_intsrc:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
err_irq_muic:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
err_irq_charger:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
err_irq_topsys:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
err_regmap:
	i2c_unregister_device(max77693->i2c_haptic);
err_i2c_haptic:
	i2c_unregister_device(max77693->i2c_muic);
	return ret;
}

static int max77693_i2c_remove(struct i2c_client *i2c)
{
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	mfd_remove_devices(max77693->dev);

	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);

	i2c_unregister_device(max77693->i2c_muic);
	i2c_unregister_device(max77693->i2c_haptic);

	return 0;
}

static const struct i2c_device_id max77693_i2c_id[] = {
	{ "max77693", TYPE_MAX77693 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);

static int max77693_suspend(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		enable_irq_wake(max77693->irq);
		disable_irq(max77693->irq);
	}

	return 0;
}

static int max77693_resume(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		disable_irq_wake(max77693->irq);
		enable_irq(max77693->irq);
	}

	return 0;
}

static const struct dev_pm_ops max77693_pm = {
	.suspend = max77693_suspend,
	.resume = max77693_resume,
};

#ifdef CONFIG_OF
static const struct of_device_id max77693_dt_match[] = {
	{ .compatible = "maxim,max77693" },
	{},
};
MODULE_DEVICE_TABLE(of, max77693_dt_match);
#endif

static struct i2c_driver max77693_i2c_driver = {
	.driver = {
		   .name = "max77693",
		   .pm = &max77693_pm,
		   .of_match_table = of_match_ptr(max77693_dt_match),
	},
	.probe = max77693_i2c_probe,
	.remove = max77693_i2c_remove,
	.id_table = max77693_i2c_id,
};

module_i2c_driver(max77693_i2c_driver);

MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud