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
|
/*
* da9063-core.c: Device access for Dialog DA9063 modules
*
* Copyright 2012 Dialog Semiconductors Ltd.
* Copyright 2013 Philipp Zabel, Pengutronix
*
* Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>,
* Michal Hajduk <michal.hajduk@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/regmap.h>
#include <linux/mfd/da9063/core.h>
#include <linux/mfd/da9063/pdata.h>
#include <linux/mfd/da9063/registers.h>
#include <linux/proc_fs.h>
#include <linux/kthread.h>
#include <linux/uaccess.h>
static struct resource da9063_regulators_resources[] = {
{
.name = "LDO_LIM",
.start = DA9063_IRQ_LDO_LIM,
.end = DA9063_IRQ_LDO_LIM,
.flags = IORESOURCE_IRQ,
},
};
static struct resource da9063_rtc_resources[] = {
{
.name = "ALARM",
.start = DA9063_IRQ_ALARM,
.end = DA9063_IRQ_ALARM,
.flags = IORESOURCE_IRQ,
},
{
.name = "TICK",
.start = DA9063_IRQ_TICK,
.end = DA9063_IRQ_TICK,
.flags = IORESOURCE_IRQ,
}
};
static struct resource da9063_onkey_resources[] = {
{
.start = DA9063_IRQ_ONKEY,
.end = DA9063_IRQ_ONKEY,
.flags = IORESOURCE_IRQ,
},
};
static struct resource da9063_hwmon_resources[] = {
{
.start = DA9063_IRQ_ADC_RDY,
.end = DA9063_IRQ_ADC_RDY,
.flags = IORESOURCE_IRQ,
},
};
static const struct mfd_cell da9063_devs[] = {
{
.name = DA9063_DRVNAME_REGULATORS,
.num_resources = ARRAY_SIZE(da9063_regulators_resources),
.resources = da9063_regulators_resources,
},
{
.name = DA9063_DRVNAME_LEDS,
},
{
.name = DA9063_DRVNAME_WATCHDOG,
},
{
.name = DA9063_DRVNAME_HWMON,
.num_resources = ARRAY_SIZE(da9063_hwmon_resources),
.resources = da9063_hwmon_resources,
},
{
.name = DA9063_DRVNAME_ONKEY,
.num_resources = ARRAY_SIZE(da9063_onkey_resources),
.resources = da9063_onkey_resources,
},
{
.name = DA9063_DRVNAME_RTC,
.num_resources = ARRAY_SIZE(da9063_rtc_resources),
.resources = da9063_rtc_resources,
},
{
.name = DA9063_DRVNAME_VIBRATION,
},
};
int da9063_device_init(struct da9063 *da9063, unsigned int irq)
{
struct da9063_pdata *pdata = da9063->dev->platform_data;
int model, revision;
int ret;
if (pdata) {
da9063->flags = pdata->flags;
da9063->irq_base = pdata->irq_base;
} else {
da9063->flags = 0;
da9063->irq_base = 0;
}
da9063->chip_irq = irq;
if (pdata && pdata->init != NULL) {
ret = pdata->init(da9063);
if (ret != 0) {
dev_err(da9063->dev,
"Platform initialization failed.\n");
return ret;
}
}
ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model);
if (ret < 0) {
dev_err(da9063->dev, "Cannot read chip model id.\n");
return -EIO;
}
if (model != PMIC_DA9063) {
dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model);
return -ENODEV;
}
ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &revision);
if (ret < 0) {
dev_err(da9063->dev, "Cannot read chip revision id.\n");
return -EIO;
}
revision >>= DA9063_CHIP_VARIANT_SHIFT;
if (revision != 3) {
dev_err(da9063->dev, "Unknown chip revision: %d\n", revision);
return -ENODEV;
}
da9063->model = model;
da9063->revision = revision;
dev_info(da9063->dev,
"Device detected (model-ID: 0x%02X rev-ID: 0x%02X)\n",
model, revision);
ret = da9063_irq_init(da9063);
if (ret) {
dev_err(da9063->dev, "Cannot initialize interrupts.\n");
return ret;
}
ret = mfd_add_devices(da9063->dev, -1, da9063_devs,
ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base,
NULL);
if (ret)
dev_err(da9063->dev, "Cannot add MFD cells\n");
return ret;
}
void da9063_device_exit(struct da9063 *da9063)
{
mfd_remove_devices(da9063->dev);
da9063_irq_exit(da9063);
}
MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>, Michal Hajduk <michal.hajduk@diasemi.com>");
MODULE_LICENSE("GPL");
|
