[Intel-gfx] [PATCH v3 4/4] drm/i915: Fix reading downstream dev count
Ramalingam C
ramalingam.c at intel.com
Mon Apr 2 10:10:34 UTC 2018
In both HDMI and DP, device count is represented by 6:0 bits of a
register(BInfo/Bstatus)
So macro for bitmasking the device_count is fixed(0x3F->0x7F).
v3:
Retained the Rb-ed
Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
cc: Sean Paul <seanpaul at chromium.org>
Reviewed-by: Sean Paul <seanpaul at chromium.org>
---
include/drm/drm_hdcp.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
index 562fa7df2637..98e63d870139 100644
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@@ -19,7 +19,7 @@
#define DRM_HDCP_RI_LEN 2
#define DRM_HDCP_V_PRIME_PART_LEN 4
#define DRM_HDCP_V_PRIME_NUM_PARTS 5
-#define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x3f)
+#define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x7f)
#define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3))
#define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7))
--
2.7.4
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