drm/i915/dp: Expose force_dsc_enable through debugfs
Currently we use force_dsc_enable to force DSC from IGT, but we dont expose this value to userspace through debugfs. This patch exposes this through the same dsc_fec_support debugfs node per connector so that we can restore its value back after the tests are completed. Suggested-by: Imre Deak <imre.deak@intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Lyude Paul <lyude@redhat.com> Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190405224821.32435-1-manasi.d.navare@intel.com
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