Read from DPCD receiver capability field for the DP++ devices. The features are
- max TMDS charachter clock - max bits per component - support for conversion from 3D frame sequential to frame pack Signed-off-by: Mika Kahola <mika.kah...@intel.com> --- drivers/gpu/drm/drm_dp_helper.c | 4 ++++ include/drm/drm_dp_helper.h | 10 ++++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index ccd0fcb..f98e4be 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -464,6 +464,10 @@ int drm_dp_bd(struct drm_dp_aux *aux, struct drm_dp_bd *bd) bd->dfp.hdmi.ycbcr420_pass_through = info[3] & YCBCR420_PASS_THROUGH; bd->dfp.hdmi.conversion_from_ycbcr444_to_ycbcr422 = info[3] & YCBCR444_TO_YCBCR422; bd->dfp.hdmi.conversion_from_ycbcr444_to_ycbcr420 = info[3] & YCBCR444_TO_YCBCR420; + } else if (bd->type & DP_DS_PORT_TYPE_DP_DUALMODE) { + bd->dfp.dual_mode.tmds_clk = info[1] * 2500; + bd->dfp.dual_mode.bpc = info[2] & DP_DS_VGA_MAX_BPC_MASK; + bd->dfp.dual_mode.frame_seq_to_frame_pack = info[3] & FRAME_SEQ_TO_FRAME_PACK; } } diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b8c4960..adf05a1 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -842,6 +842,15 @@ struct drm_dp_hdmi { }; /* + * DP to DP++ + */ +struct drm_dp_dual_mode { + int tmds_clk; + uint8_t bpc; + bool frame_seq_to_frame_pack; +}; + +/* * Branch device */ struct drm_dp_bd { @@ -852,6 +861,7 @@ struct drm_dp_bd { struct drm_dp_vga vga; struct drm_dp_dvi dvi; struct drm_dp_hdmi hdmi; + struct drm_dp_dual_mode dual_mode; } dfp; }; -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx