From: Ramalingam C <ramalingam.c@intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
seanpaul@chromium.org, daniel.vetter@ffwll.ch
Subject: [PATCH 3/4] drm/i915: debug log for REPLY_ACK missing
Date: Tue, 27 Nov 2018 19:32:58 +0530 [thread overview]
Message-ID: <1543327379-22629-4-git-send-email-ramalingam.c@intel.com> (raw)
In-Reply-To: <1543327379-22629-1-git-send-email-ramalingam.c@intel.com>
Adding a debug log when the DP_AUX_NATIVE_REPLY_ACK is missing
for aksv write. This helps to locate the possible non responding
DP HDCP sinks.
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 70ae3d57316b..18e3a5a3d873 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5390,7 +5390,11 @@ int intel_dp_hdcp_write_an_aksv(struct intel_digital_port *intel_dig_port,
}
reply = (rxbuf[0] >> 4) & DP_AUX_NATIVE_REPLY_MASK;
- return reply == DP_AUX_NATIVE_REPLY_ACK ? 0 : -EIO;
+ ret = reply == DP_AUX_NATIVE_REPLY_ACK ? 0 : -EIO;
+ if (ret)
+ DRM_DEBUG_KMS("Aksv write: DP_AUX_NATIVE_REPLY_ACK missing\n");
+
+ return ret;
}
static int intel_dp_hdcp_read_bksv(struct intel_digital_port *intel_dig_port,
--
2.7.4
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next prev parent reply other threads:[~2018-11-27 14:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-27 14:02 [PATCH 0/4] HDCP1.4 fixes Ramalingam C
2018-11-27 14:02 ` [PATCH 1/4] drm/i915: Fix GEN9 HDCP1.4 key load process Ramalingam C
2018-11-27 15:15 ` Ville Syrjälä
2018-11-27 16:27 ` [Intel-gfx] " C, Ramalingam
2018-11-28 14:00 ` [PATCH v2 " Ramalingam C
2018-12-03 14:23 ` [PATCH " Sean Paul
2018-11-27 14:02 ` [PATCH 2/4] drm/i915: Fix platform coverage for HDCP1.4 Ramalingam C
2018-12-03 14:23 ` Sean Paul
2018-11-27 14:02 ` Ramalingam C [this message]
2018-12-03 14:26 ` [PATCH 3/4] drm/i915: debug log for REPLY_ACK missing Sean Paul
2018-11-27 14:02 ` [PATCH 4/4] drm/i915: Increase timeout for Encrypt status change Ramalingam C
2018-12-03 14:27 ` Sean Paul
2018-11-27 14:36 ` ✓ Fi.CI.BAT: success for HDCP1.4 fixes (rev8) Patchwork
2018-11-27 17:52 ` ✓ Fi.CI.IGT: " Patchwork
2018-11-28 16:10 ` ✓ Fi.CI.BAT: success for HDCP1.4 fixes (rev9) Patchwork
2018-11-29 0:10 ` ✓ Fi.CI.IGT: " Patchwork
2018-12-03 10:08 ` [PATCH 0/4] HDCP1.4 fixes C, Ramalingam
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