Searched hist:cda2bb78c24de7674eafa3210314dc75bed344a6 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/gpu/drm/i915/ |
| H A D | i915_suspend.c | diff cda2bb78c24de7674eafa3210314dc75bed344a6 Tue Jul 26 15:53:06 CDT 2011 Adam Jackson <ajax@redhat.com> 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>
|
| H A D | i915_drv.h | diff cda2bb78c24de7674eafa3210314dc75bed344a6 Tue Jul 26 15:53:06 CDT 2011 Adam Jackson <ajax@redhat.com> 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>
|