• Shashank Sharma's avatar
    drm/edid: detect SCDC support in HF-VSDB · 62c58af3
    Shashank Sharma authored
    This patch does following:
    - Adds a new structure (drm_hdmi_info) in drm_display_info.
      This structure will be used to save and indicate if sink
      supports advanced HDMI 2.0 features
    - Adds another structure drm_scdc within drm_hdmi_info, to
      reflect scdc support and capabilities in connected HDMI 2.0 sink.
    - Checks the HF-VSDB block for presence of SCDC, and marks it
      in scdc structure
    - If SCDC is present, checks if sink is capable of generating
      SCDC read request, and marks it in scdc structure.
    
    V2: Addressed review comments
      Thierry:
      - Fix typos in commit message and make abbreviation consistent
        across the commit message.
      - Change structure object name from hdmi_info -> hdmi
      - Fix typos and abbreviations in description of structure drm_hdmi_info
        end the description with a full stop.
      - Create a structure drm_scdc, and keep all information related to SCDC
        register set (supported, read request supported) etc in it.
    
      Ville:
      - Change rr -> read_request
      - Call drm_detect_scrambling function drm_parse_hf_vsdb so that all
        of HF-VSDB parsing can be kept in same function, in incremental
        patches.
    
    V3: Rebase.
    V4: Rebase.
    V5: Rebase.
    V6: Addressed review comments from Ville
      - Add clock rate calculations for 1/10 and 1/40 ratios
      - Remove leftovers from old patchset
    V7: Added R-B from Jose.
    V8: Rebase.
    V9: Rebase.
    V10: Rebase.
    Signed-off-by: default avatarShashank Sharma <shashank.sharma@intel.com>
    Reviewed-by: default avatarThierry Reding <treding@nvidia.com>
    Reviewed-by: default avatarJose Abreu <joabreu@synopsys.com>
    Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
    Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-5-git-send-email-shashank.sharma@intel.com
    62c58af3
drm_scdc_helper.c 6.41 KB