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34a956db MG |
1 | /* |
2 | * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/slab.h> | |
8b48463f | 23 | #include <linux/acpi.h> |
34a956db MG |
24 | |
25 | MODULE_LICENSE("GPL"); | |
26 | ||
27 | static ssize_t irst_show_wakeup_events(struct device *dev, | |
28 | struct device_attribute *attr, | |
29 | char *buf) | |
30 | { | |
31 | struct acpi_device *acpi; | |
c7c878a4 | 32 | unsigned long long value; |
34a956db MG |
33 | acpi_status status; |
34 | ||
35 | acpi = to_acpi_device(dev); | |
36 | ||
c7c878a4 | 37 | status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value); |
d46a7640 | 38 | if (ACPI_FAILURE(status)) |
34a956db MG |
39 | return -EINVAL; |
40 | ||
c7c878a4 | 41 | return sprintf(buf, "%lld\n", value); |
34a956db MG |
42 | } |
43 | ||
44 | static ssize_t irst_store_wakeup_events(struct device *dev, | |
45 | struct device_attribute *attr, | |
46 | const char *buf, size_t count) | |
47 | { | |
48 | struct acpi_device *acpi; | |
34a956db MG |
49 | acpi_status status; |
50 | unsigned long value; | |
51 | int error; | |
52 | ||
53 | acpi = to_acpi_device(dev); | |
54 | ||
55 | error = kstrtoul(buf, 0, &value); | |
56 | ||
57 | if (error) | |
58 | return error; | |
59 | ||
b92f7a9f | 60 | status = acpi_execute_simple_method(acpi->handle, "SFFS", value); |
34a956db | 61 | |
d46a7640 | 62 | if (ACPI_FAILURE(status)) |
34a956db MG |
63 | return -EINVAL; |
64 | ||
65 | return count; | |
66 | } | |
67 | ||
68 | static struct device_attribute irst_wakeup_attr = { | |
69 | .attr = { .name = "wakeup_events", .mode = 0600 }, | |
70 | .show = irst_show_wakeup_events, | |
71 | .store = irst_store_wakeup_events | |
72 | }; | |
73 | ||
74 | static ssize_t irst_show_wakeup_time(struct device *dev, | |
75 | struct device_attribute *attr, char *buf) | |
76 | { | |
77 | struct acpi_device *acpi; | |
c7c878a4 | 78 | unsigned long long value; |
34a956db MG |
79 | acpi_status status; |
80 | ||
81 | acpi = to_acpi_device(dev); | |
82 | ||
c7c878a4 | 83 | status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value); |
d46a7640 | 84 | if (ACPI_FAILURE(status)) |
34a956db MG |
85 | return -EINVAL; |
86 | ||
c7c878a4 | 87 | return sprintf(buf, "%lld\n", value); |
34a956db MG |
88 | } |
89 | ||
90 | static ssize_t irst_store_wakeup_time(struct device *dev, | |
91 | struct device_attribute *attr, | |
92 | const char *buf, size_t count) | |
93 | { | |
94 | struct acpi_device *acpi; | |
34a956db MG |
95 | acpi_status status; |
96 | unsigned long value; | |
97 | int error; | |
98 | ||
99 | acpi = to_acpi_device(dev); | |
100 | ||
101 | error = kstrtoul(buf, 0, &value); | |
102 | ||
103 | if (error) | |
104 | return error; | |
105 | ||
b92f7a9f | 106 | status = acpi_execute_simple_method(acpi->handle, "SFTV", value); |
34a956db | 107 | |
d46a7640 | 108 | if (ACPI_FAILURE(status)) |
34a956db MG |
109 | return -EINVAL; |
110 | ||
111 | return count; | |
112 | } | |
113 | ||
114 | static struct device_attribute irst_timeout_attr = { | |
115 | .attr = { .name = "wakeup_time", .mode = 0600 }, | |
116 | .show = irst_show_wakeup_time, | |
117 | .store = irst_store_wakeup_time | |
118 | }; | |
119 | ||
120 | static int irst_add(struct acpi_device *acpi) | |
121 | { | |
a3d3c53f | 122 | int error; |
34a956db MG |
123 | |
124 | error = device_create_file(&acpi->dev, &irst_timeout_attr); | |
a3d3c53f PU |
125 | if (unlikely(error)) |
126 | return error; | |
34a956db MG |
127 | |
128 | error = device_create_file(&acpi->dev, &irst_wakeup_attr); | |
a3d3c53f PU |
129 | if (unlikely(error)) |
130 | device_remove_file(&acpi->dev, &irst_timeout_attr); | |
34a956db | 131 | |
34a956db MG |
132 | return error; |
133 | } | |
134 | ||
135 | static int irst_remove(struct acpi_device *acpi) | |
136 | { | |
137 | device_remove_file(&acpi->dev, &irst_wakeup_attr); | |
138 | device_remove_file(&acpi->dev, &irst_timeout_attr); | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | static const struct acpi_device_id irst_ids[] = { | |
144 | {"INT3392", 0}, | |
145 | {"", 0} | |
146 | }; | |
147 | ||
148 | static struct acpi_driver irst_driver = { | |
149 | .owner = THIS_MODULE, | |
150 | .name = "intel_rapid_start", | |
151 | .class = "intel_rapid_start", | |
152 | .ids = irst_ids, | |
153 | .ops = { | |
154 | .add = irst_add, | |
155 | .remove = irst_remove, | |
156 | }, | |
157 | }; | |
158 | ||
2ff1af70 | 159 | module_acpi_driver(irst_driver); |
34a956db MG |
160 | |
161 | MODULE_DEVICE_TABLE(acpi, irst_ids); |