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* drm: Fix warning when building docs for scdc_helperSean Paul2017-07-311-25/+0
| | | | | | | | | | | | | | | Fixes: ../drivers/gpu/drm/drm_scdc_helper.c:203: ERROR: Unexpected indentation. ../drivers/gpu/drm/drm_scdc_helper.c:204: WARNING: Block quote ends without a blank line; unexpected unindent. Changes in v2: - Property blockquote TMDS calculations so they look pretty (Daniel) - Remove duplicate documentation from the header file Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170720200921.36897-1-seanpaul@chromium.org
* drm/scdc: declare drm_scdc_get_scrambling_statusJani Nikula2017-03-231-0/+2
| | | | | | | | | | | | | Fix sparse warning: drivers/gpu/drm/drm_scdc_helper.c:138:6: warning: symbol 'drm_scdc_get_scrambling_status' was not declared. Should it be static? Fixes: 62c58af32c93 ("drm/edid: detect SCDC support in HF-VSDB") Cc: Shashank Sharma <shashank.sharma@intel.com> Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1490193218-24806-1-git-send-email-jani.nikula@intel.com
* drm/edid: detect SCDC support in HF-VSDBShashank Sharma2017-03-211-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Shashank Sharma <shashank.sharma@intel.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-5-git-send-email-shashank.sharma@intel.com
* drm: Add SCDC helpersThierry Reding2017-03-211-0/+132
SCDC is a mechanism defined in the HDMI 2.0 specification that allows the source and sink devices to communicate. This commit introduces helpers to access the SCDC and provides the symbolic names for the various registers defined in the specification. V2: Rebase. V3: Added R-B from Jose. V4: Rebase V5: Addressed review comments from Ville - Handle the I2c return values in a better way (dp_dual_mode) - Make the macros for SCDC Major/Minor more readable, by adding a 'GET' in the macro names V6: Rebase V7: Rebase V8: Rebase V9: Rebase V10: Rebase Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Reviewed-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-2-git-send-email-shashank.sharma@intel.com