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| author | Adam Jackson <ajax@redhat.com> | 2011-07-26 16:53:06 -0400 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-07-29 16:23:31 -0700 |
| commit | cda2bb78c24de7674eafa3210314dc75bed344a6 (patch) | |
| tree | 267045f7fea7eb65291384cad42eedbc48c57d11 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 291427f5fdadec6e4be2924172e83588880e1539 (diff) | |
| download | talos-obmc-linux-cda2bb78c24de7674eafa3210314dc75bed344a6.tar.gz talos-obmc-linux-cda2bb78c24de7674eafa3210314dc75bed344a6.zip | |
drm/i915/pch: Save/restore PCH_PORT_HOTPLUG across suspend
At least on a Lenovo X220 the HPD bits of this are enabled at boot but
cleared after resume, which means plug interrupts stop working.
This also happens to fix DP displays re-lighting on resume. I'm quite
certain that's an accident: the first DP link train inevitably fails on
that machine, and it's only serendipity that we're getting multiple plug
interrupts and the second train works. But I shall take my victories
where I get them.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Tested-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
0 files changed, 0 insertions, 0 deletions
