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drm: Read DP branch device id

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Read DisplayPort branch device id string.

Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1473419458-17080-6-git-send-email-mika.kahola@intel.com
This commit is contained in:
Mika Kahola
2016-09-09 14:10:51 +03:00
committed by Jani Nikula
parent 7529d6af1c
commit 266d783baa
2 changed files with 14 additions and 0 deletions
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2
include/drm/drm_dp_helper.h
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@@ -445,6 +445,7 @@
#define DP_SOURCE_OUI 0x300
#define DP_SINK_OUI 0x400
#define DP_BRANCH_OUI 0x500
#define DP_BRANCH_ID 0x503
#define DP_SET_POWER 0x600
# define DP_SET_POWER_D0 0x1
@@ -819,6 +820,7 @@ int drm_dp_downstream_max_clock(const u8 dpcd[DP_RECEIVER_CAP_SIZE],
const u8 port_cap[4]);
int drm_dp_downstream_max_bpc(const u8 dpcd[DP_RECEIVER_CAP_SIZE],
const u8 port_cap[4]);
int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]);
void drm_dp_aux_init(struct drm_dp_aux *aux);
int drm_dp_aux_register(struct drm_dp_aux *aux);