drm/i915: Initialize panel timing registers if VBIOS did not

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The time between start of the pixel clock and backlight enable is a basic
panel timing constraint.  If the Panel Power On/Off registers are found
to be 0, assume we are booting without VBIOS initialization and set these
registers to something reasonable.

Change-Id: Ibed6cc10d46bf52fd92e0beb25ae3525b5eef99d
Signed-off-by: Bryan Freed <bfreed@chromium.org>
[ickle: rearranged into a separate function to distinguish its role from
simply parsing the VBIOS tables.]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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This commit is contained in:

Bryan Freed 2010-10-14 09:14:51 +01:00 • committed by Chris Wilson

parent e60a0b107b

commit 6d139a87b7

3 changed files with 25 additions and 4 deletions

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5

drivers/gpu/drm/i915/i915_dma.c

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21

drivers/gpu/drm/i915/intel_bios.c

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3

drivers/gpu/drm/i915/intel_bios.h

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