• Ville Syrjälä's avatar
    drm/i915/cnl: Implement CNL display init/unit sequence · d8d4a512
    Ville Syrjälä authored
    Implement the CNL display init/uninit sequence as outlined in Bspec.
    
    Quite similar to SKL/BXT. The main complicaiton is probably the extra
    procmon setup we must do based on the process/voltage information we
    can read out from some register.
    
    v2: s/skl_dbuf/gen9_dbuf/ to follow upstream
        bxt needed a cdclk sanitize step, so let's add it for cnl too
    v3: s/CHICKEN_MISC_1/CHICKEN_MISC_2/ (Ander)
    v4: Rebased by Rodrigo after Ville's cdclk rework
    v5: Removed unecessary Aux IO forced enable/disable, Fix DW10 setup
        Fix procpon Mask. (Credits-to Paulo and Clint)
        Remove A0 workaround.
    v6: Rebased on top of recent code (Rodrigo).
    v7: Respect the order of sanitize_ after set_
        (Done by Rodrigo, Requested by Ville)
    v8: Commit message updated to matvh v5 changes besides
        Remove unused DW8 and an extra blank line. (all noticed
        by Imre).
    v9: Remove __attribute__((unused)) added on latest version
        of drm/i915/cnl: Implement .set_cdclk() for CNL.
    
    Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
    Cc: Clint Taylor <clinton.a.taylor@intel.com>
    Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
    Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
    Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
    Link: http://patchwork.freedesktop.org/patch/msgid/1497047175-27250-3-git-send-email-rodrigo.vivi@intel.com
    d8d4a512
intel_cdclk.c 55.6 KB