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drm/i915/dsc: add basic hardware state readout support
Add basic hardware state readout for DSC, and check the most relevant details in the state checker. v2: - check for DSC power before reading its state - check if source supports DSC at all As a side effect, this should also get the power domains for the enabled DSC on takeover, and subsequently disable DSC if it's not needed. Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Vandita Kulkarni <vandita.kulkarni@intel.com> Reviewed-by:Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/3fb018cf9bd9a4c275aab389b6ec0f2a4e938bb9.1575974743.git.jani.nikula@intel.com
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- drivers/gpu/drm/i915/display/intel_ddi.c 2 additions, 0 deletionsdrivers/gpu/drm/i915/display/intel_ddi.c
- drivers/gpu/drm/i915/display/intel_display.c 4 additions, 0 deletionsdrivers/gpu/drm/i915/display/intel_display.c
- drivers/gpu/drm/i915/display/intel_vdsc.c 49 additions, 0 deletionsdrivers/gpu/drm/i915/display/intel_vdsc.c
- drivers/gpu/drm/i915/display/intel_vdsc.h 2 additions, 0 deletionsdrivers/gpu/drm/i915/display/intel_vdsc.h
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