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-rw-r--r--include/drm/drm_dp_helper.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 38ffcb4332aa..fe061489f91f 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -221,7 +221,8 @@
# define DP_PSR_FRAME_CAPTURE (1 << 3)
#define DP_SINK_COUNT 0x200
-# define DP_SINK_COUNT_MASK (31 << 0)
+/* prior to 1.2 bit 7 was reserved mbz */
+# define DP_GET_SINK_COUNT(x) ((((x) & 0x80) >> 1) | ((x) & 0x3f))
# define DP_SINK_CP_READY (1 << 6)
#define DP_DEVICE_SERVICE_IRQ_VECTOR 0x201
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