drm/i915/dpt: Add a modparam to disable DPT via the chicken bit

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Add i915.enable_dpt modparam to allow disabling the DPT
usage in hardware via the chicken bit. Useful when debugging
potential DPT issues.

Quickly smoke tested on ADL.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-6-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

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This commit is contained in:

Ville Syrjälä 2023-03-20 11:05:21 +02:00

parent 5a08585d38

commit c5de248484

9 changed files with 46 additions and 3 deletions

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6

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

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21

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

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2

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

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7

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

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1

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

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6

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

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3

drivers/gpu/drm/i915/i915_params.c

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1

drivers/gpu/drm/i915/i915_params.h

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2

drivers/gpu/drm/i915/i915_reg.h

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