drm/i915/opregion: add function to check if headless sku

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Export headless sku bit (bit 13) from opregion->header->pcon as an
interface to check if our device is headless configuration.

This is mainly targeted for hybrid gfx systems. E.g. when display
is not supposed to be connected discrete graphics card it's
opregion can inform this is headless graphics card.

v3: Dummy version is now static inline function
v2: Check also opregion version

Bspec: 53441
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220610085429.52935-2-jouni.hogander@intel.com

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Jouni Högander 2022-06-10 11:54:27 +03:00 • committed by Jani Nikula

parent 8d2ba05b09

commit eb2983c09f

2 changed files with 21 additions and 0 deletions

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14

drivers/gpu/drm/i915/display/intel_opregion.c

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7

drivers/gpu/drm/i915/display/intel_opregion.h

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