drm/i915/debugfs: Add i915_hpd_storm_ctl

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This adds a file in i915's debugfs directory that allows userspace to
manually control HPD storm detection. This is mainly for hotplugging
tests, where we might want to test HPD storm functionality or disable
storm detection to speed up hotplugging tests without breaking anything.

Changes since v1:
- Make HPD storm interval configurable
- Misc code cleanup

Signed-off-by: Lyude <lyude@redhat.com>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Tomeu Vizoso <tomeu@tomeuvizoso.net>

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This commit is contained in:

Lyude 2017-02-03 21:18:25 -05:00

parent 6401c37dbd

commit 317eaa9508

5 changed files with 94 additions and 6 deletions

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78

drivers/gpu/drm/i915/i915_debugfs.c

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1

drivers/gpu/drm/i915/i915_drv.c

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4

drivers/gpu/drm/i915/i915_drv.h

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2

drivers/gpu/drm/i915/i915_irq.c

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15

drivers/gpu/drm/i915/intel_hotplug.c

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