diff options
| 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/i915_drv.h | |
| parent | 291427f5fdadec6e4be2924172e83588880e1539 (diff) | |
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/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index ce7914c4c044..e0d0e278f62d 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -541,6 +541,7 @@ typedef struct drm_i915_private { u32 savePIPEB_LINK_M1; u32 savePIPEB_LINK_N1; u32 saveMCHBAR_RENDER_STANDBY; + u32 savePCH_PORT_HOTPLUG; struct { /** Bridge to intel-gtt-ko */ |