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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Device access for Dialog DA9063 modules
*
* Copyright 2012 Dialog Semiconductors Ltd.
* Copyright 2013 Philipp Zabel, Pengutronix
*
* Author: Krystian Garbaciak, Dialog Semiconductor
* Author: Michal Hajduk, Dialog Semiconductor
*
*/
#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/registers.h>
#include <linux/proc_fs.h>
#include <linux/kthread.h>
#include <linux/uaccess.h>
static const struct resource da9063_regulators_resources[] = {
{
.name = "LDO_LIM",
.start = DA9063_IRQ_LDO_LIM,
.end = DA9063_IRQ_LDO_LIM,
.flags = IORESOURCE_IRQ,
},
};
static const 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 const struct resource da9063_onkey_resources[] = {
{
.name = "ONKEY",
.start = DA9063_IRQ_ONKEY,
.end = DA9063_IRQ_ONKEY,
.flags = IORESOURCE_IRQ,
},
};
static const struct resource da9063_hwmon_resources[] = {
{
.start = DA9063_IRQ_ADC_RDY,
.end = DA9063_IRQ_ADC_RDY,
.flags = IORESOURCE_IRQ,
},
};
static const struct mfd_cell da9063_common_devs[] = {
{
.name = DA9063_DRVNAME_REGULATORS,
.num_resources = ARRAY_SIZE(da9063_regulators_resources),
.resources = da9063_regulators_resources,
},
{
.name = DA9063_DRVNAME_LEDS,
},
{
.name = DA9063_DRVNAME_WATCHDOG,
.of_compatible = "dlg,da9063-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,
.of_compatible = "dlg,da9063-onkey",
},
{
.name = DA9063_DRVNAME_VIBRATION,
},
};
/* Only present on DA9063 , not on DA9063L */
static const struct mfd_cell da9063_devs[] = {
{
.name = DA9063_DRVNAME_RTC,
.num_resources = ARRAY_SIZE(da9063_rtc_resources),
.resources = da9063_rtc_resources,
.of_compatible = "dlg,da9063-rtc",
},
};
static int da9063_clear_fault_log(struct da9063 *da9063)
{
int ret = 0;
int fault_log = 0;
ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log);
if (ret < 0) {
dev_err(da9063->dev, "Cannot read FAULT_LOG.\n");
return -EIO;
}
if (fault_log) {
if (fault_log & DA9063_TWD_ERROR)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_TWD_ERROR\n");
if (fault_log & DA9063_POR)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_POR\n");
if (fault_log & DA9063_VDD_FAULT)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_VDD_FAULT\n");
if (fault_log & DA9063_VDD_START)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_VDD_START\n");
if (fault_log & DA9063_TEMP_CRIT)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_TEMP_CRIT\n");
if (fault_log & DA9063_KEY_RESET)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_KEY_RESET\n");
if (fault_log & DA9063_NSHUTDOWN)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_NSHUTDOWN\n");
if (fault_log & DA9063_WAIT_SHUT)
dev_dbg(da9063->dev,
"Fault log entry detected: DA9063_WAIT_SHUT\n");
}
ret = regmap_write(da9063->regmap,
DA9063_REG_FAULT_LOG,
fault_log);
if (ret < 0)
dev_err(da9063->dev,
"Cannot reset FAULT_LOG values %d\n", ret);
return ret;
}
int da9063_device_init(struct da9063 *da9063, unsigned int irq)
{
int ret;
ret = da9063_clear_fault_log(da9063);
if (ret < 0)
dev_err(da9063->dev, "Cannot clear fault log\n");
da9063->flags = 0;
da9063->irq_base = -1;
da9063->chip_irq = irq;
ret = da9063_irq_init(da9063);
if (ret) {
dev_err(da9063->dev, "Cannot initialize interrupts.\n");
return ret;
}
da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq);
ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
da9063_common_devs,
ARRAY_SIZE(da9063_common_devs),
NULL, da9063->irq_base, NULL);
if (ret) {
dev_err(da9063->dev, "Failed to add child devices\n");
return ret;
}
if (da9063->type == PMIC_TYPE_DA9063) {
ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
da9063_devs, ARRAY_SIZE(da9063_devs),
NULL, da9063->irq_base, NULL);
if (ret) {
dev_err(da9063->dev, "Failed to add child devices\n");
return ret;
}
}
return ret;
}
MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
MODULE_AUTHOR("Krystian Garbaciak");
MODULE_AUTHOR("Michal Hajduk");
MODULE_LICENSE("GPL");
|
