On 11/27/2018 11:07 PM, Daniel Vetter wrote:
On Tue, Nov 27, 2018 at 04:54:15PM +0000, Bloomfield, Jon wrote:
I'm not formally reviewing this series, but while glancing at it, I noticed....
-----Original Message-----
From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
Ramalingam C
Sent: Tuesday, November 27, 2018 2:43 AM
To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
daniel.vetter@xxxxxxxx; Winkler, Tomas <tomas.winkler@xxxxxxxxx>
Subject: [PATCH v8 12/35] drm/i915: Implement the HDCP2.2
support for DP
Implements the DP adaptation specific HDCP2.2 functions.
These functions perform the DPCD read and write for communicating the
HDCP2.2 auth message back and forth.
v2:
wait for cp_irq is merged with this patch. Rebased.
v3:
wait_queue is used for wait for cp_irq [Chris Wilson]
v4:
Style fixed.
%s/PARING/PAIRING
Few style fixes [Uma]
v5:
Lookup table for DP HDCP2.2 msg details [Daniel].
Extra lines are removed.
v6:
Rebased.
v7:
Fixed some regression introduced at v5. [Ankit]
Macro HDCP_2_2_RX_CAPS_VERSION_VAL is reused [Uma]
Converted a function to inline [Uma]
%s/uintxx_t/uxx
v8:
Error due to the sinks are reported as DEBUG logs.
Adjust to the new mei interface.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Signed-off-by: Ankit K Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 338
++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 7 +
drivers/gpu/drm/i915/intel_hdcp.c | 6 +
3 files changed, 351 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_dp.c
b/drivers/gpu/drm/i915/intel_dp.c
index ecc4706db7dc..1cc82e490999 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -31,6 +31,7 @@
#include <linux/types.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
+#include <linux/mei_hdcp.h>
#include <asm/byteorder.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
@@ -5347,6 +5348,27 @@ void intel_dp_encoder_suspend(struct
intel_encoder *intel_encoder)
pps_unlock(intel_dp);
}
<SNIP>
+
+static struct hdcp2_dp_msg_data *get_hdcp2_dp_msg_data(u8 msg_id)
+{
+ int i;
+
+ for (i = 0; i < sizeof(hdcp2_msg_data); i++)
Should be
sizeof(hdcp2_msg_data) / sizeof(*hdcp2_msg_data)
or equivalent.
ARRAY_SIZE is probably what you want here.
yes. missed it as authentication flow always provides the valid msg_id.
Will fix it.
--Ram
-Daniel
Has the failure return been tested?
+ if (hdcp2_msg_data[i].msg_id == msg_id)
+ return &hdcp2_msg_data[i];
+
+ return NULL;
+}
+
<SNIP>
--
2.7.4
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