drm/i915: Add ACPI OpRegion support for Ironlake

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Add the support of ACPI opregion on Ironlake so that the backlight
brightness can be adjusted by using ACPI interface
   >/sys/class/backlight/acpi_video0/brightness

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Zhao Yakui <yakui.zhao@intel.com>
[zhenyuw: cleanups, fix typo for checking GSE irq and convert to
current irq handling logic.]
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

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This commit is contained in:

Zhao Yakui 2009-10-28 05:10:00 +00:00 • committed by Eric Anholt

parent 1dc7546d1a

commit 01c66889c1

4 changed files with 96 additions and 8 deletions

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7

drivers/gpu/drm/i915/i915_dma.c

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4

drivers/gpu/drm/i915/i915_drv.h

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19

drivers/gpu/drm/i915/i915_irq.c

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74

drivers/gpu/drm/i915/i915_opregion.c

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