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Unified Diff: drivers/gpu/drm/Kconfig

Issue 2830015: Implement direct pineview backlight control. (Closed) Base URL: ssh://git@chromiumos-git/kernel.git
Patch Set: Move config file changes to another patch for upstreamability, as per msb. Created 10 years, 6 months ago
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Index: drivers/gpu/drm/Kconfig
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 305c590039634603972d31ed02ab72b49e202938..14e21c37c01118907cfde0279dc0b3b296341c5a 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -124,6 +124,18 @@ config DRM_I915_KMS
the driver to bind to PCI devices, which precludes loading things
like intelfb.
+config DRM_I915_DIRECT_BACKLIGHT
+ bool "Enable direct backlight control"
+ depends on DRM_I915
+ help
+ Choose this option if you want the i915 driver to provide direct
+ backlight control via /sys/class/backlight/i915_backlight. This
+ is in addition to the ACPI interface (which may also be in that
+ directory) that uses ASLE (ACPI Source Language Events) events to
+ get to i915_opregion.c code.
+ Direct backlight control gives finer granularity (0-256) than ACPI
+ and does not require BIOS support.
+
endchoice
config DRM_MGA
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