1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/acpi.h>
7*4882a593Smuzhiyun #include <linux/module.h>
8*4882a593Smuzhiyun #include <linux/slab.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun MODULE_LICENSE("GPL");
11*4882a593Smuzhiyun
irst_show_wakeup_events(struct device * dev,struct device_attribute * attr,char * buf)12*4882a593Smuzhiyun static ssize_t irst_show_wakeup_events(struct device *dev,
13*4882a593Smuzhiyun struct device_attribute *attr,
14*4882a593Smuzhiyun char *buf)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun struct acpi_device *acpi;
17*4882a593Smuzhiyun unsigned long long value;
18*4882a593Smuzhiyun acpi_status status;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun acpi = to_acpi_device(dev);
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);
23*4882a593Smuzhiyun if (ACPI_FAILURE(status))
24*4882a593Smuzhiyun return -EINVAL;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun return sprintf(buf, "%lld\n", value);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
irst_store_wakeup_events(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)29*4882a593Smuzhiyun static ssize_t irst_store_wakeup_events(struct device *dev,
30*4882a593Smuzhiyun struct device_attribute *attr,
31*4882a593Smuzhiyun const char *buf, size_t count)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun struct acpi_device *acpi;
34*4882a593Smuzhiyun acpi_status status;
35*4882a593Smuzhiyun unsigned long value;
36*4882a593Smuzhiyun int error;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun acpi = to_acpi_device(dev);
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun error = kstrtoul(buf, 0, &value);
41*4882a593Smuzhiyun if (error)
42*4882a593Smuzhiyun return error;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun status = acpi_execute_simple_method(acpi->handle, "SFFS", value);
45*4882a593Smuzhiyun if (ACPI_FAILURE(status))
46*4882a593Smuzhiyun return -EINVAL;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun return count;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun static struct device_attribute irst_wakeup_attr = {
52*4882a593Smuzhiyun .attr = { .name = "wakeup_events", .mode = 0600 },
53*4882a593Smuzhiyun .show = irst_show_wakeup_events,
54*4882a593Smuzhiyun .store = irst_store_wakeup_events
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun
irst_show_wakeup_time(struct device * dev,struct device_attribute * attr,char * buf)57*4882a593Smuzhiyun static ssize_t irst_show_wakeup_time(struct device *dev,
58*4882a593Smuzhiyun struct device_attribute *attr, char *buf)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun struct acpi_device *acpi;
61*4882a593Smuzhiyun unsigned long long value;
62*4882a593Smuzhiyun acpi_status status;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun acpi = to_acpi_device(dev);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value);
67*4882a593Smuzhiyun if (ACPI_FAILURE(status))
68*4882a593Smuzhiyun return -EINVAL;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun return sprintf(buf, "%lld\n", value);
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
irst_store_wakeup_time(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)73*4882a593Smuzhiyun static ssize_t irst_store_wakeup_time(struct device *dev,
74*4882a593Smuzhiyun struct device_attribute *attr,
75*4882a593Smuzhiyun const char *buf, size_t count)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun struct acpi_device *acpi;
78*4882a593Smuzhiyun acpi_status status;
79*4882a593Smuzhiyun unsigned long value;
80*4882a593Smuzhiyun int error;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun acpi = to_acpi_device(dev);
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun error = kstrtoul(buf, 0, &value);
85*4882a593Smuzhiyun if (error)
86*4882a593Smuzhiyun return error;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun status = acpi_execute_simple_method(acpi->handle, "SFTV", value);
89*4882a593Smuzhiyun if (ACPI_FAILURE(status))
90*4882a593Smuzhiyun return -EINVAL;
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun return count;
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun static struct device_attribute irst_timeout_attr = {
96*4882a593Smuzhiyun .attr = { .name = "wakeup_time", .mode = 0600 },
97*4882a593Smuzhiyun .show = irst_show_wakeup_time,
98*4882a593Smuzhiyun .store = irst_store_wakeup_time
99*4882a593Smuzhiyun };
100*4882a593Smuzhiyun
irst_add(struct acpi_device * acpi)101*4882a593Smuzhiyun static int irst_add(struct acpi_device *acpi)
102*4882a593Smuzhiyun {
103*4882a593Smuzhiyun int error;
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun error = device_create_file(&acpi->dev, &irst_timeout_attr);
106*4882a593Smuzhiyun if (unlikely(error))
107*4882a593Smuzhiyun return error;
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun error = device_create_file(&acpi->dev, &irst_wakeup_attr);
110*4882a593Smuzhiyun if (unlikely(error))
111*4882a593Smuzhiyun device_remove_file(&acpi->dev, &irst_timeout_attr);
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun return error;
114*4882a593Smuzhiyun }
115*4882a593Smuzhiyun
irst_remove(struct acpi_device * acpi)116*4882a593Smuzhiyun static int irst_remove(struct acpi_device *acpi)
117*4882a593Smuzhiyun {
118*4882a593Smuzhiyun device_remove_file(&acpi->dev, &irst_wakeup_attr);
119*4882a593Smuzhiyun device_remove_file(&acpi->dev, &irst_timeout_attr);
120*4882a593Smuzhiyun
121*4882a593Smuzhiyun return 0;
122*4882a593Smuzhiyun }
123*4882a593Smuzhiyun
124*4882a593Smuzhiyun static const struct acpi_device_id irst_ids[] = {
125*4882a593Smuzhiyun {"INT3392", 0},
126*4882a593Smuzhiyun {"", 0}
127*4882a593Smuzhiyun };
128*4882a593Smuzhiyun
129*4882a593Smuzhiyun static struct acpi_driver irst_driver = {
130*4882a593Smuzhiyun .owner = THIS_MODULE,
131*4882a593Smuzhiyun .name = "intel_rapid_start",
132*4882a593Smuzhiyun .class = "intel_rapid_start",
133*4882a593Smuzhiyun .ids = irst_ids,
134*4882a593Smuzhiyun .ops = {
135*4882a593Smuzhiyun .add = irst_add,
136*4882a593Smuzhiyun .remove = irst_remove,
137*4882a593Smuzhiyun },
138*4882a593Smuzhiyun };
139*4882a593Smuzhiyun
140*4882a593Smuzhiyun module_acpi_driver(irst_driver);
141*4882a593Smuzhiyun
142*4882a593Smuzhiyun MODULE_DEVICE_TABLE(acpi, irst_ids);
143