blob: 29f2f2c6e06c36e54edfa24162d1bc90872c2fc1 (
plain)
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
207
208
209
210
211
212
213
214
215
216
217
218
219
|
#!/bin/sh
#
# Copyright 2006-2007 Richard Hughes <richard@hughsie.com>
# Copyright 2007 Peter Jones <pjones@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
# Handle video quirks. If you are having suspend/resume issues,
# troubleshooting using this hook is probably the best place to start.
# If it weren't for video card quirks, suspend/resume on Linux would be
# a whole lot more stable.
. "${PM_FUNCTIONS}"
for opt in $PM_CMDLINE; do
case "${opt##--quirk-}" in # just quirks, please
dpms-on) QUIRK_DPMS_ON="true" ;;
dpms-suspend) QUIRK_DPMS_SUSPEND="true" ;;
radeon-off) QUIRK_RADEON_OFF="true" ;;
reset-brightness) QUIRK_RESET_BRIGHTNESS="true" ;;
s3-bios) QUIRK_S3_BIOS="true" ;;
s3-mode) QUIRK_S3_MODE="true" ;;
vbe-post) QUIRK_VBE_POST="true" ;;
vbemode-restore) QUIRK_VBEMODE_RESTORE="true" ;;
vbestate-restore) QUIRK_VBESTATE_RESTORE="true" ;;
vga-mode3) QUIRK_VGA_MODE_3="true" ;;
no-fb) QUIRK_NOFB="true" ;;
pci-save) QUIRK_PCI_SAVE="true" ;;
no-chvt) QUIRK_NO_CHVT="true" ;;
none) QUIRK_NONE="true" ;;
*) continue ;;
esac
done
reset_brightness()
{
for bl in /sys/class/backlight/* ; do
[ -f "$bl/brightness" ] || continue
BR="$(cat $bl/brightness)"
echo 0 > "$bl/brightness"
echo "$BR" > "$bl/brightness"
done
}
if command_exists vbetool; then
vbe() { vbetool "$@"; }
else
vbe() { echo "vbetool not installed!" 1>&2; return 1; }
fi
if command_exists radeontool; then
radeon() { radeontool "$@"; }
else
radeon() { echo "radeontool not found" 1>&2; return 1; }
fi
die_if_framebuffer()
{
[ -d "/sys/class/graphics/fb0" ] || return
echo "--quirk-no-fb passed, but system is using a framebuffer."
echo "Aborting."
exit 1
}
save_fbcon()
{
local con
for con in /sys/class/graphics/*/state; do
[ -f $con ] || continue
echo 1 >"${con}"
done
}
resume_fbcon()
{
local con
for con in /sys/class/graphics/*/state; do
[ -f $con ] || continue
echo 0 >"${con}"
done
}
maybe_chvt()
{
is_set "$QUIRK_NO_CHVT" && return
fgconsole |savestate console
chvt 63
}
maybe_deallocvt()
{
state_exists console || return 0
chvt $(restorestate console)
deallocvt 63
}
# Some tiny helper functions for quirk handling
quirk() { is_set "$1" && [ -z $QUIRK_NONE ]; }
# save/restore vbe state
vbe_savestate() { vbe vbestate save |savestate vbestate; }
vbe_restorestate() { restorestate vbestate |vbe vbestate restore; }
# save/restore the vbe mode
vbe_savemode() { vbe vbemode get |savestate vbemode; }
vbe_restoremode()
{
# this is a little mode complicated to handle special-casing mode 3.
local vbemode=$(restorestate vbemode)
if [ "$vbemode" = "3" ]; then
vbe vgamode set $vbemode
else
vbe vbemode set $vbemode
fi
}
# post the video card
vbe_post()
{
local rom="/var/run/video.rom"
# if we do not have a romfile, do not post with it.
[ -f "$rom" ] || unset rom
vbe post $rom
sleep 0.1
}
# turn critical bits of radeon cards off/on
radeon_off() { radeon dac off; radeon light off; }
radeon_on() { radeon dac on; radeon light on; }
# save and restore video card PCI config state
save_pci()
{
local pci="/sys/bus/pci/devices"
for dev in "${pci}"/*; do
[ -f "${dev}/class" ] || continue
[ $(cat "${dev}/class") = "0x030000" ] || continue
[ -f "${dev}/config" ] || continue
# it is a video card, it has a configuration. Save it.
savestate "pci_video_${dev##*/}" <${dev}/config
done
}
restore_pci()
{
local pci="/sys/bus/pci/devices"
for dev in "${pci}"/*; do
state_exists "pci_video_${dev##*/}" || continue
restorestate "pci_video_${dev##*/}" > "${dev}/config"
done
}
suspend_video()
{
# 0=nothing, 1=s3_bios, 2=s3_mode, 3=both
local acpi_flag=0
quirk "${QUIRK_S3_BIOS}" && acpi_flag=$(($acpi_flag + 1))
quirk "${QUIRK_S3_MODE}" && acpi_flag=$(($acpi_flag + 2))
sysctl -w kernel.acpi_video_flags=$acpi_flag
quirk "${QUIRK_NOFB}" && die_if_framebuffer
quirk "${QUIRK_VBESTATE_RESTORE}" && vbe_savestate
quirk "${QUIRK_VBEMODE_RESTORE}" && vbe_savemode
quirk "${QUIRK_RADEON_OFF}" && radeon_off
quirk "${QUIRK_PCI_SAVE}" && pci_save
quirk "${QUIRK_VGA_MODE_3}" && vbe vbemode set 3
quirk "${QUIRK_DPMS_SUSPEND}" && vbe dpms suspend
save_fbcon
}
resume_video()
{
# We might need to do one or many of these quirks
quirk "${QUIRK_PCI_SAVE}" && pci_restore
quirk "${QUIRK_VBE_POST}" && vbe_post
quirk "${QUIRK_VBESTATE_RESTORE}" && vbe_restorestate
quirk "${QUIRK_VBEMODE_RESTORE}" && vbe_restoremode
resume_fbcon # also should be handled by a quirk.
quirk "${QUIRK_RADEON_OFF}" && radeon_on
quirk "${QUIRK_DPMS_ON}" && vbe dpms on
quirk "${QUIRK_RESET_BRIGHTNESS}" && reset_brightness
return 0 # avoid spurious hook exit failure message.
}
help() {
echo # first echo makes it look nicer.
echo "Video quirk handler options:"
echo
echo " --quirk-dpms-on"
echo " --quirk-dpms-suspend"
echo " --quirk-radeon-off"
echo " --quirk-reset-brightness"
echo " --quirk-s3-bios"
echo " --quirk-s3-mode"
echo " --quirk-vbe-post"
echo " --quirk-vbemode-restore"
echo " --quirk-vbestate-restore"
echo " --quirk-vga-mode3"
echo " --quirk-none"
}
case "$1" in
suspend) maybe_chvt; suspend_video ;;
hibernate) maybe_chvt
if is_set "$HIBERNATE_RESUME_POST_VIDEO"; then
suspend_video
fi
;;
resume) resume_video; maybe_deallocvt;;
thaw)
if is_set "${HIBERNATE_RESUME_POST_VIDEO}"; then
resume_video
fi
maybe_deallocvt
;;
help) help ;;
esac
|
