4 * Copyright (c) 2011 Samsung Electronics Co., Ltd
5 * http://www.samsung.com
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/err.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/interrupt.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/mutex.h>
23 #include <linux/mfd/core.h>
24 #include <linux/mfd/s5m87xx/s5m-core.h>
25 #include <linux/mfd/s5m87xx/s5m-pmic.h>
26 #include <linux/mfd/s5m87xx/s5m-rtc.h>
27 #include <linux/regmap.h>
29 static struct mfd_cell s5m8751_devs
[] = {
31 .name
= "s5m8751-pmic",
33 .name
= "s5m-charger",
35 .name
= "s5m8751-codec",
39 static struct mfd_cell s5m8763_devs
[] = {
41 .name
= "s5m8763-pmic",
45 .name
= "s5m-charger",
49 static struct mfd_cell s5m8767_devs
[] = {
51 .name
= "s5m8767-pmic",
57 int s5m_reg_read(struct s5m87xx_dev
*s5m87xx
, u8 reg
, void *dest
)
59 return regmap_read(s5m87xx
->regmap
, reg
, dest
);
61 EXPORT_SYMBOL_GPL(s5m_reg_read
);
63 int s5m_bulk_read(struct s5m87xx_dev
*s5m87xx
, u8 reg
, int count
, u8
*buf
)
65 return regmap_bulk_read(s5m87xx
->regmap
, reg
, buf
, count
);
67 EXPORT_SYMBOL_GPL(s5m_bulk_read
);
69 int s5m_reg_write(struct s5m87xx_dev
*s5m87xx
, u8 reg
, u8 value
)
71 return regmap_write(s5m87xx
->regmap
, reg
, value
);
73 EXPORT_SYMBOL_GPL(s5m_reg_write
);
75 int s5m_bulk_write(struct s5m87xx_dev
*s5m87xx
, u8 reg
, int count
, u8
*buf
)
77 return regmap_raw_write(s5m87xx
->regmap
, reg
, buf
, count
);
79 EXPORT_SYMBOL_GPL(s5m_bulk_write
);
81 int s5m_reg_update(struct s5m87xx_dev
*s5m87xx
, u8 reg
, u8 val
, u8 mask
)
83 return regmap_update_bits(s5m87xx
->regmap
, reg
, mask
, val
);
85 EXPORT_SYMBOL_GPL(s5m_reg_update
);
87 static struct regmap_config s5m_regmap_config
= {
92 static int s5m87xx_i2c_probe(struct i2c_client
*i2c
,
93 const struct i2c_device_id
*id
)
95 struct s5m_platform_data
*pdata
= i2c
->dev
.platform_data
;
96 struct s5m87xx_dev
*s5m87xx
;
99 s5m87xx
= devm_kzalloc(&i2c
->dev
, sizeof(struct s5m87xx_dev
),
104 i2c_set_clientdata(i2c
, s5m87xx
);
105 s5m87xx
->dev
= &i2c
->dev
;
107 s5m87xx
->irq
= i2c
->irq
;
108 s5m87xx
->type
= id
->driver_data
;
111 s5m87xx
->device_type
= pdata
->device_type
;
112 s5m87xx
->ono
= pdata
->ono
;
113 s5m87xx
->irq_base
= pdata
->irq_base
;
114 s5m87xx
->wakeup
= pdata
->wakeup
;
117 s5m87xx
->regmap
= regmap_init_i2c(i2c
, &s5m_regmap_config
);
118 if (IS_ERR(s5m87xx
->regmap
)) {
119 ret
= PTR_ERR(s5m87xx
->regmap
);
120 dev_err(&i2c
->dev
, "Failed to allocate register map: %d\n",
125 s5m87xx
->rtc
= i2c_new_dummy(i2c
->adapter
, RTC_I2C_ADDR
);
126 i2c_set_clientdata(s5m87xx
->rtc
, s5m87xx
);
128 if (pdata
&& pdata
->cfg_pmic_irq
)
129 pdata
->cfg_pmic_irq();
131 s5m_irq_init(s5m87xx
);
133 pm_runtime_set_active(s5m87xx
->dev
);
135 switch (s5m87xx
->device_type
) {
137 ret
= mfd_add_devices(s5m87xx
->dev
, -1, s5m8751_devs
,
138 ARRAY_SIZE(s5m8751_devs
), NULL
, 0);
141 ret
= mfd_add_devices(s5m87xx
->dev
, -1, s5m8763_devs
,
142 ARRAY_SIZE(s5m8763_devs
), NULL
, 0);
145 ret
= mfd_add_devices(s5m87xx
->dev
, -1, s5m8767_devs
,
146 ARRAY_SIZE(s5m8767_devs
), NULL
, 0);
149 /* If this happens the probe function is problem */
159 mfd_remove_devices(s5m87xx
->dev
);
160 s5m_irq_exit(s5m87xx
);
161 i2c_unregister_device(s5m87xx
->rtc
);
162 regmap_exit(s5m87xx
->regmap
);
166 static int s5m87xx_i2c_remove(struct i2c_client
*i2c
)
168 struct s5m87xx_dev
*s5m87xx
= i2c_get_clientdata(i2c
);
170 mfd_remove_devices(s5m87xx
->dev
);
171 s5m_irq_exit(s5m87xx
);
172 i2c_unregister_device(s5m87xx
->rtc
);
173 regmap_exit(s5m87xx
->regmap
);
177 static const struct i2c_device_id s5m87xx_i2c_id
[] = {
181 MODULE_DEVICE_TABLE(i2c
, s5m87xx_i2c_id
);
183 static struct i2c_driver s5m87xx_i2c_driver
= {
186 .owner
= THIS_MODULE
,
188 .probe
= s5m87xx_i2c_probe
,
189 .remove
= s5m87xx_i2c_remove
,
190 .id_table
= s5m87xx_i2c_id
,
193 static int __init
s5m87xx_i2c_init(void)
195 return i2c_add_driver(&s5m87xx_i2c_driver
);
198 subsys_initcall(s5m87xx_i2c_init
);
200 static void __exit
s5m87xx_i2c_exit(void)
202 i2c_del_driver(&s5m87xx_i2c_driver
);
204 module_exit(s5m87xx_i2c_exit
);
206 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
207 MODULE_DESCRIPTION("Core support for the S5M MFD");
208 MODULE_LICENSE("GPL");