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| author | Ben Widawsky <ben@bwidawsk.net> | 2013-04-05 13:12:39 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-04-06 19:33:29 +0200 |
| commit | e3c74757c23cbbbb0c64b34c107732f3e2d67fa3 (patch) | |
| tree | 6fdc324d46dd72b65dfbaf0a34c6a056a2a8290d /drivers/gpu/drm/i915/intel_fb.c | |
| parent | bae3699182027525d92b97d904578a533264b242 (diff) | |
| download | linux-e3c74757c23cbbbb0c64b34c107732f3e2d67fa3.tar.bz2 | |
drm/i915: Support PCH no display
GEN supports a fusing option which subtracts the PCH display (making the
CPU display also useless). In this configuration MMIO which gets decoded
to a certain range will hang the CPU.
For us, this is sort of the equivalent of having no pipes, and we can
easily modify some code to not do certain things with no pipes.
v2: Moved the num pipes check up in the call chain, and removed extra
checks noted by Daniel. For more details, see:
http://lists.freedesktop.org/archives/intel-gfx/2013-March/025746.html
v3: Drop the intel_setup_overlay check (Daniel)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_fb.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index 8d81c929b7b5..0e19e575a1b4 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -283,6 +283,9 @@ void intel_fb_restore_mode(struct drm_device *dev) struct drm_mode_config *config = &dev->mode_config; struct drm_plane *plane; + if (INTEL_INFO(dev)->num_pipes == 0) + return; + drm_modeset_lock_all(dev); ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); |