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5
6#include <linux/acpi.h>
7#include <linux/module.h>
8#include <linux/slab.h>
9
10MODULE_LICENSE("GPL");
11
12static ssize_t irst_show_wakeup_events(struct device *dev,
13 struct device_attribute *attr,
14 char *buf)
15{
16 struct acpi_device *acpi;
17 unsigned long long value;
18 acpi_status status;
19
20 acpi = to_acpi_device(dev);
21
22 status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);
23 if (ACPI_FAILURE(status))
24 return -EINVAL;
25
26 return sprintf(buf, "%lld\n", value);
27}
28
29static ssize_t irst_store_wakeup_events(struct device *dev,
30 struct device_attribute *attr,
31 const char *buf, size_t count)
32{
33 struct acpi_device *acpi;
34 acpi_status status;
35 unsigned long value;
36 int error;
37
38 acpi = to_acpi_device(dev);
39
40 error = kstrtoul(buf, 0, &value);
41 if (error)
42 return error;
43
44 status = acpi_execute_simple_method(acpi->handle, "SFFS", value);
45 if (ACPI_FAILURE(status))
46 return -EINVAL;
47
48 return count;
49}
50
51static struct device_attribute irst_wakeup_attr = {
52 .attr = { .name = "wakeup_events", .mode = 0600 },
53 .show = irst_show_wakeup_events,
54 .store = irst_store_wakeup_events
55};
56
57static ssize_t irst_show_wakeup_time(struct device *dev,
58 struct device_attribute *attr, char *buf)
59{
60 struct acpi_device *acpi;
61 unsigned long long value;
62 acpi_status status;
63
64 acpi = to_acpi_device(dev);
65
66 status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value);
67 if (ACPI_FAILURE(status))
68 return -EINVAL;
69
70 return sprintf(buf, "%lld\n", value);
71}
72
73static ssize_t irst_store_wakeup_time(struct device *dev,
74 struct device_attribute *attr,
75 const char *buf, size_t count)
76{
77 struct acpi_device *acpi;
78 acpi_status status;
79 unsigned long value;
80 int error;
81
82 acpi = to_acpi_device(dev);
83
84 error = kstrtoul(buf, 0, &value);
85 if (error)
86 return error;
87
88 status = acpi_execute_simple_method(acpi->handle, "SFTV", value);
89 if (ACPI_FAILURE(status))
90 return -EINVAL;
91
92 return count;
93}
94
95static struct device_attribute irst_timeout_attr = {
96 .attr = { .name = "wakeup_time", .mode = 0600 },
97 .show = irst_show_wakeup_time,
98 .store = irst_store_wakeup_time
99};
100
101static int irst_add(struct acpi_device *acpi)
102{
103 int error;
104
105 error = device_create_file(&acpi->dev, &irst_timeout_attr);
106 if (unlikely(error))
107 return error;
108
109 error = device_create_file(&acpi->dev, &irst_wakeup_attr);
110 if (unlikely(error))
111 device_remove_file(&acpi->dev, &irst_timeout_attr);
112
113 return error;
114}
115
116static int irst_remove(struct acpi_device *acpi)
117{
118 device_remove_file(&acpi->dev, &irst_wakeup_attr);
119 device_remove_file(&acpi->dev, &irst_timeout_attr);
120
121 return 0;
122}
123
124static const struct acpi_device_id irst_ids[] = {
125 {"INT3392", 0},
126 {"", 0}
127};
128
129static struct acpi_driver irst_driver = {
130 .owner = THIS_MODULE,
131 .name = "intel_rapid_start",
132 .class = "intel_rapid_start",
133 .ids = irst_ids,
134 .ops = {
135 .add = irst_add,
136 .remove = irst_remove,
137 },
138};
139
140module_acpi_driver(irst_driver);
141
142MODULE_DEVICE_TABLE(acpi, irst_ids);
143
