drm/i915: Support PCH no display

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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>

...

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Ben Widawsky 2013-04-05 13:12:39 -07:00 • committed by Daniel Vetter

parent bae3699182

commit e3c74757c2

3 changed files with 20 additions and 6 deletions

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20

drivers/gpu/drm/i915/i915_dma.c

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3

drivers/gpu/drm/i915/intel_display.c

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3

drivers/gpu/drm/i915/intel_fb.c

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