From: Adam Jackson <ajax@redhat.com> Date: Mon, 14 May 2012 20:05:46 +0000 (-0400) Subject: drm/dp: Add DPCD defines for register 0x007 X-Git-Tag: v3.5-rc1~100^2~18 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=de44d97193fc67c1636c614fc302945e2912da1f;p=linux.git drm/dp: Add DPCD defines for register 0x007 Low four bits are downstream port count. High bit indicates peer OUI support. OUI matching will allow us to do additional per-sink handling for things like DP->VGA bandwidth limits or (hopefully) the iMac-as- display hack. Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> --- diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 8ed85b96487d..1744b18c06b3 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -72,6 +72,10 @@ #define DP_MAIN_LINK_CHANNEL_CODING 0x006 +#define DP_DOWN_STREAM_PORT_COUNT 0x007 +#define DP_PORT_COUNT_MASK 0x0f +#define DP_OUI_SUPPORT (1 << 7) + #define DP_EDP_CONFIGURATION_CAP 0x00d #define DP_TRAINING_AUX_RD_INTERVAL 0x00e