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From: Ramalingam C <ramalingam.c@intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	seanpaul@chromium.org
Cc: rodrigo.vivi@intel.com
Subject: [PATCH v2 4/4] drm/i915: Fix downstream dev count read
Date: Thu, 29 Mar 2018 19:39:08 +0530	[thread overview]
Message-ID: <1522332548-15370-5-git-send-email-ramalingam.c@intel.com> (raw)
In-Reply-To: <1522332548-15370-1-git-send-email-ramalingam.c@intel.com>

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).

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
cc: Sean Paul <seanpaul@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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  parent reply	other threads:[~2018-03-29 14:09 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-29 14:09 [PATCH v2 0/4] HDCP1.4 fixes Ramalingam C
2018-03-29 14:09 ` [PATCH v2 1/4] drm/i915: Read HDCP R0 thrice in case of mismatch Ramalingam C
2018-03-29 14:35   ` Sean Paul
2018-04-02  9:08     ` Ramalingam C
2018-03-29 14:09 ` [PATCH v2 2/4] drm/i915: Read Vprime thrice incase " Ramalingam C
2018-03-29 14:38   ` Sean Paul
2018-04-02  9:16     ` Ramalingam C
2018-03-29 14:09 ` [PATCH v2 3/4] drm/i915: Check hdcp key loadability Ramalingam C
2018-03-29 14:24   ` Ville Syrjälä
2018-04-02  9:05     ` Ramalingam C
2018-04-06 16:02       ` Ville Syrjälä
2018-04-09  8:28         ` Daniel Vetter
2018-04-11  8:27           ` Ramalingam C
2018-04-13 15:49             ` Daniel Vetter
2018-03-29 14:09 ` Ramalingam C [this message]
2018-03-29 14:39   ` [PATCH v2 4/4] drm/i915: Fix downstream dev count read Sean Paul
2018-03-29 14:12 ` [PATCH v2 0/4] HDCP1.4 fixes Ramalingam C
2018-03-29 14:45 ` ✓ Fi.CI.BAT: success for HDCP1.4 fixes (rev3) Patchwork
2018-03-29 17:53 ` ✗ Fi.CI.IGT: failure " Patchwork

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