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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* This file is part of the coreboot project. */
#include <acpi/acpi.h>
#include <acpi/acpigen.h>
#include <string.h>
#include "i915.h"
void
drivers_intel_gma_displays_ssdt_generate(const struct i915_gpu_controller_info *conf)
{
size_t i;
const char *names[] = { "UNK", "VGA", "TV", "DVI", "LCD" };
int counters[ARRAY_SIZE(names)] = { 0 };
if (!conf->ndid)
return;
acpigen_write_scope("\\_SB.PCI0.GFX0");
/*
Method (_DOD, 0)
{
Return (Package() {
0x5a5a5a5a,
0x5a5a5a5a,
0x5a5a5a5a
})
}
*/
acpigen_write_method("_DOD", 0);
acpigen_emit_byte(RETURN_OP);
acpigen_write_package(conf->ndid);
for (i = 0; i < conf->ndid; i++) {
acpigen_write_dword (conf->did[i] | 0x80010000);
}
acpigen_pop_len(); /* End Package. */
acpigen_pop_len(); /* End Method. */
for (i = 0; i < conf->ndid; i++) {
char name[5];
int kind;
kind = (conf->did[i] >> 8) & 0xf;
if (kind >= ARRAY_SIZE(names)) {
kind = 0;
}
snprintf(name, sizeof(name), "%s%d", names[kind], counters[kind]);
counters[kind]++;
/* Device (LCD0) */
acpigen_write_device(name);
/* Name (_ADR, 0x0410) */
acpigen_write_name_dword("_ADR", conf->did[i] & 0xffff);
/* ACPI brightness for LCD. */
if (kind == 4) {
/*
Method (_BCL, 0, NotSerialized)
{
Return (^^XBCL())
}
*/
acpigen_write_method("_BCL", 0);
acpigen_emit_byte(RETURN_OP);
acpigen_emit_namestring("^^XBCL");
acpigen_pop_len();
/*
Method (_BCM, 1, NotSerialized)
{
^^XBCM(Arg0)
}
*/
acpigen_write_method("_BCM", 1);
acpigen_emit_namestring("^^XBCM");
acpigen_emit_byte(ARG0_OP);
acpigen_pop_len();
/*
Method (_BQC, 0, NotSerialized)
{
Return (^^XBQC())
}
*/
acpigen_write_method("_BQC", 0);
acpigen_emit_byte(RETURN_OP);
acpigen_emit_namestring("^^XBQC");
acpigen_pop_len();
}
/*
* _DCS, _DGS and _DSS are required by specification. However,
* we never implemented them properly, and no OS driver com-
* plained yet. So we stub them out and keep the traditional
* behavior in case an OS driver checks for their existence.
*/
/*
Method(_DCS, 0)
{
Return (0x1d)
}
*/
acpigen_write_method("_DCS", 0);
acpigen_write_return_integer(0x1d);
acpigen_pop_len();
/*
Method(_DGS, 0)
{
Return (0)
}
*/
acpigen_write_method("_DGS", 0);
acpigen_write_return_integer(0);
acpigen_pop_len();
/*
Method(_DSS, 1)
{
}
*/
acpigen_write_method("_DSS", 1);
acpigen_pop_len();
acpigen_pop_len(); /* End Device. */
}
acpigen_pop_len(); /* End Scope. */
}
|
