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WindowServer: Implement mechanism to restore safe mode setting

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Such mechanism will be used by the Intel Graphics driver, because we
lack support of changing the resolution on this driver currently, so,
when WindowServer will try to mode-set the display then it will fail,
and will use the safe mode-setting call instead to be able to show
something on screen.
This commit is contained in:
Liav A 2022-04-29 20:11:42 +03:00 • committed by Andreas Kling
parent d9a2706079
commit 6d7e2596e0
3 changed files with 15 additions and 3 deletions
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5
Kernel/API/FB.h
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@ -64,6 +64,11 @@ ALWAYS_INLINE int fb_set_head_mode_setting(int fd, FBHeadModeSetting* mode_setti
return ioctl(fd, FB_IOCTL_SET_HEAD_MODE_SETTING, mode_setting);
}
ALWAYS_INLINE int fb_set_safe_head_mode_setting(int fd)
{
return ioctl(fd, FB_IOCTL_SET_SAFE_HEAD_MODE_SETTING, nullptr);
}
ALWAYS_INLINE int fb_get_head_mode_setting(int fd, FBHeadModeSetting* mode_setting)
{
FBHeadModeSetting head_mode_setting;