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authorVille Syrjälä <[email protected]>2016-05-19 12:14:43 +0300
committerVille Syrjälä <[email protected]>2016-05-23 17:53:52 +0300
commit11825b0dba78b2f26a6ff9a6acb5d5b6b186e741 (patch)
tree8895673aeb5a8ff2545f8a70f16c711b70b58330 /tools/perf/scripts/python/event_analyzing_sample.py
parent0a31afbc0f87c734cb1688eb626ee9abee63d723 (diff)
drm/i915: Enable GSE interrupt on BDW+
We've never actually enabled or unmasked the GSE interrupt on BDW+, even though the interrupt handler was always prepared for it. Let's enable it and see what happens. Credit to Mark Kettenis who fixed this in the OpenBSD fork of the driver. He reports that it fixed the "ACPI _BCM/_BCQ-based brightness mechanism on a MacBookPro12,1 and a 3rd gen Lenovo X1 Carbon" for them. Mark says: "FWIW, this *is* needed if you want ACPI-based backlight control to work. On Linux you probably don't notice, since "hardware" backlight control is preferred over "firmware" or "platform" backlight control. It would help me if this did land in the Linux tree though, as it will make future imports of the i915 driver into OpenBSD easier." So even though we don't really need this, let's put it in to help Mark with future porting efforts. Should be harmless to have it enabled in any case. Reviewed-by: Daniel Vetter <[email protected]> References: http://lists.freedesktop.org/archives/intel-gfx/2015-December/081799.html Reported-by: Mark Kettenis <[email protected]> Cc: Mark Kettenis <[email protected]> Cc: Jani Nikula <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Acked-by: Jani Nikula <[email protected]>
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