2 * max77693.c - mfd core driver for the MAX 77693
4 * Copyright (C) 2012 Samsung Electronics
5 * SangYoung Son <hello.son@smasung.com>
7 * This program is not provided / owned by Maxim Integrated Products.
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.
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.
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
23 * This driver is based on max8997.c
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>
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-common.h>
37 #include <linux/mfd/max77693-private.h>
38 #include <linux/regulator/machine.h>
39 #include <linux/regmap.h>
41 #define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
42 #define I2C_ADDR_MUIC (0x4A >> 1)
43 #define I2C_ADDR_HAPTIC (0x90 >> 1)
45 static const struct mfd_cell max77693_devs
[] = {
46 { .name
= "max77693-pmic", },
48 .name
= "max77693-charger",
49 .of_compatible
= "maxim,max77693-charger",
51 { .name
= "max77693-muic", },
53 .name
= "max77693-haptic",
54 .of_compatible
= "maxim,max77693-haptic",
57 .name
= "max77693-led",
58 .of_compatible
= "maxim,max77693-led",
62 static const struct regmap_config max77693_regmap_config
= {
65 .max_register
= MAX77693_PMIC_REG_END
,
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
, },
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
,
82 .irqs
= max77693_led_irqs
,
83 .num_irqs
= ARRAY_SIZE(max77693_led_irqs
),
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
, },
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
,
98 .irqs
= max77693_topsys_irqs
,
99 .num_irqs
= ARRAY_SIZE(max77693_topsys_irqs
),
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
, },
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,
116 .irqs
= max77693_charger_irqs
,
117 .num_irqs
= ARRAY_SIZE(max77693_charger_irqs
),
120 static const struct regmap_config max77693_regmap_muic_config
= {
123 .max_register
= MAX77693_MUIC_REG_END
,
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
, },
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
, },
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
, },
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
,
153 .irqs
= max77693_muic_irqs
,
154 .num_irqs
= ARRAY_SIZE(max77693_muic_irqs
),
157 static const struct regmap_config max77693_regmap_haptic_config
= {
160 .max_register
= MAX77693_HAPTIC_REG_END
,
163 static int max77693_i2c_probe(struct i2c_client
*i2c
,
164 const struct i2c_device_id
*id
)
166 struct max77693_dev
*max77693
;
167 unsigned int reg_data
;
170 max77693
= devm_kzalloc(&i2c
->dev
,
171 sizeof(struct max77693_dev
), GFP_KERNEL
);
172 if (max77693
== NULL
)
175 i2c_set_clientdata(i2c
, max77693
);
176 max77693
->dev
= &i2c
->dev
;
178 max77693
->irq
= i2c
->irq
;
179 max77693
->type
= id
->driver_data
;
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",
189 ret
= regmap_read(max77693
->regmap
, MAX77693_PMIC_REG_PMIC_ID2
,
192 dev_err(max77693
->dev
, "device not found on this channel\n");
195 dev_info(max77693
->dev
, "device ID: 0x%x\n", reg_data
);
197 max77693
->i2c_muic
= i2c_new_dummy(i2c
->adapter
, I2C_ADDR_MUIC
);
198 if (!max77693
->i2c_muic
) {
199 dev_err(max77693
->dev
, "Failed to allocate I2C device for MUIC\n");
202 i2c_set_clientdata(max77693
->i2c_muic
, max77693
);
204 max77693
->i2c_haptic
= i2c_new_dummy(i2c
->adapter
, I2C_ADDR_HAPTIC
);
205 if (!max77693
->i2c_haptic
) {
206 dev_err(max77693
->dev
, "Failed to allocate I2C device for Haptic\n");
210 i2c_set_clientdata(max77693
->i2c_haptic
, max77693
);
212 max77693
->regmap_haptic
= devm_regmap_init_i2c(max77693
->i2c_haptic
,
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
);
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.
226 max77693
->regmap_muic
= devm_regmap_init_i2c(max77693
->i2c_muic
,
227 &max77693_regmap_muic_config
);
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
);
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
);
241 dev_err(max77693
->dev
, "failed to add irq chip: %d\n", ret
);
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
);
251 dev_err(max77693
->dev
, "failed to add irq chip: %d\n", ret
);
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
,
259 &max77693
->irq_data_chg
);
261 dev_err(max77693
->dev
, "failed to add irq chip: %d\n", ret
);
262 goto err_irq_charger
;
265 ret
= regmap_add_irq_chip(max77693
->regmap_muic
, max77693
->irq
,
266 IRQF_ONESHOT
| IRQF_SHARED
|
267 IRQF_TRIGGER_FALLING
, 0,
268 &max77693_muic_irq_chip
,
269 &max77693
->irq_data_muic
);
271 dev_err(max77693
->dev
, "failed to add irq chip: %d\n", ret
);
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
);
280 dev_err(max77693
->dev
,
281 "Could not unmask interrupts in INTSRC: %d\n",
286 pm_runtime_set_active(max77693
->dev
);
288 ret
= mfd_add_devices(max77693
->dev
, -1, max77693_devs
,
289 ARRAY_SIZE(max77693_devs
), NULL
, 0, NULL
);
296 mfd_remove_devices(max77693
->dev
);
298 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_muic
);
300 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_chg
);
302 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_topsys
);
304 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_led
);
306 i2c_unregister_device(max77693
->i2c_haptic
);
308 i2c_unregister_device(max77693
->i2c_muic
);
312 static int max77693_i2c_remove(struct i2c_client
*i2c
)
314 struct max77693_dev
*max77693
= i2c_get_clientdata(i2c
);
316 mfd_remove_devices(max77693
->dev
);
318 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_muic
);
319 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_chg
);
320 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_topsys
);
321 regmap_del_irq_chip(max77693
->irq
, max77693
->irq_data_led
);
323 i2c_unregister_device(max77693
->i2c_muic
);
324 i2c_unregister_device(max77693
->i2c_haptic
);
329 static const struct i2c_device_id max77693_i2c_id
[] = {
330 { "max77693", TYPE_MAX77693
},
333 MODULE_DEVICE_TABLE(i2c
, max77693_i2c_id
);
335 static int max77693_suspend(struct device
*dev
)
337 struct i2c_client
*i2c
= container_of(dev
, struct i2c_client
, dev
);
338 struct max77693_dev
*max77693
= i2c_get_clientdata(i2c
);
340 if (device_may_wakeup(dev
)) {
341 enable_irq_wake(max77693
->irq
);
342 disable_irq(max77693
->irq
);
348 static int max77693_resume(struct device
*dev
)
350 struct i2c_client
*i2c
= container_of(dev
, struct i2c_client
, dev
);
351 struct max77693_dev
*max77693
= i2c_get_clientdata(i2c
);
353 if (device_may_wakeup(dev
)) {
354 disable_irq_wake(max77693
->irq
);
355 enable_irq(max77693
->irq
);
361 static const struct dev_pm_ops max77693_pm
= {
362 .suspend
= max77693_suspend
,
363 .resume
= max77693_resume
,
367 static const struct of_device_id max77693_dt_match
[] = {
368 { .compatible
= "maxim,max77693" },
373 static struct i2c_driver max77693_i2c_driver
= {
376 .owner
= THIS_MODULE
,
378 .of_match_table
= of_match_ptr(max77693_dt_match
),
380 .probe
= max77693_i2c_probe
,
381 .remove
= max77693_i2c_remove
,
382 .id_table
= max77693_i2c_id
,
385 static int __init
max77693_i2c_init(void)
387 return i2c_add_driver(&max77693_i2c_driver
);
389 /* init early so consumer devices can complete system boot */
390 subsys_initcall(max77693_i2c_init
);
392 static void __exit
max77693_i2c_exit(void)
394 i2c_del_driver(&max77693_i2c_driver
);
396 module_exit(max77693_i2c_exit
);
398 MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
399 MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
400 MODULE_LICENSE("GPL");