Re: [Intel-gfx] [PATCH v5 06/40] drm/i915: Define HDCP2.2 related variables

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On Tuesday 10 July 2018 02:01 AM, Sean Paul wrote:
On Wed, Jun 27, 2018 at 02:09:55PM +0530, Ramalingam C wrote:
For upcoming implementation of HDCP2.2 in I915, important variable
required for HDCP2.2 are defined.
Please just introduce them when you use them. I can't provide useful review on
this patch unless I can see how the variables are used. This will also reduce
the series size, which is an added bonus for reviewers :-)
Squashed these change into the subsequent patches.

Ram.

Sean

HDCP_shim is extended to support encoder specific HDCP2.2 flows.

v2:
   1.4 shim is extended to support hdcp2.2. [Sean Paul]
   platform's/panel's hdcp ver capability is removed. [Sean Paul]
   mei references in i915_private are moved to later patches. [Chris Wilson]
v3:
   mei_cl_device ref is moved into intel_hdcp
v4:
   Extra * in comment is removed [Uma]
v5:
   No Change.

Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
  drivers/gpu/drm/i915/intel_drv.h | 61 ++++++++++++++++++++++++++++++++++++++++
  1 file changed, 61 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index eb480574a92e..b615ea4a44c3 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -29,6 +29,7 @@
  #include <linux/i2c.h>
  #include <linux/hdmi.h>
  #include <linux/sched/clock.h>
+#include <linux/mei_hdcp.h>
  #include <drm/i915_drm.h>
  #include "i915_drv.h"
  #include <drm/drm_crtc.h>
@@ -375,6 +376,32 @@ struct intel_hdcp_shim {
  	/* Detects panel's hdcp capability. This is optional for HDMI. */
  	int (*hdcp_capable)(struct intel_digital_port *intel_dig_port,
  			    bool *hdcp_capable);
+
+	/* Write HDCP2.2 messages */
+	int (*write_2_2_msg)(struct intel_digital_port *intel_dig_port,
+			     void *buf, size_t size);
+
+	/* Read HDCP2.2 messages */
+	int (*read_2_2_msg)(struct intel_digital_port *intel_dig_port,
+			    uint8_t msg_id, void *buf, size_t size);
+
+	/*
+	 * Implementation of DP HDCP2.2 Errata for the communication of stream
+	 * type to Receivers. In DP HDCP2.2 Stream type is one of the input to
+	 * the HDCP2.2 Chiper for En/De-Cryption. Not applicable for HDMI.
+	 */
+	int (*config_stream_type)(struct intel_digital_port *intel_dig_port,
+				  void *buf, size_t size);
+
+	/* HDCP2.2 Link Integrity Check */
+	int (*check_2_2_link)(struct intel_digital_port *intel_dig_port);
+
+	/* Detects whether Panel is HDCP2.2 capable */
+	int (*hdcp_2_2_capable)(struct intel_digital_port *intel_dig_port,
+				bool *capable);
+
+	/* Detects the HDCP protocol(DP/HDMI) required on the port */
+	enum hdcp_protocol (*hdcp_protocol)(void);
  };
struct intel_hdcp {
@@ -384,6 +411,40 @@ struct intel_hdcp {
  	uint64_t hdcp_value;
  	struct delayed_work hdcp_check_work;
  	struct work_struct hdcp_prop_work;
+
+	/* HDCP2.2 related definitions */
+	bool hdcp2_supported;
+
+	/*
+	 * Content Stream Type defined by content owner. TYPE0(0x0) content can
+	 * flow in the link protected by HDCP2.2 or HDCP1.4, where as TYPE1(0x1)
+	 * content can flow only through a link protected by HDCP2.2.
+	 */
+	u8 content_type;
+
+	bool is_paired;
+	bool is_repeater;
+
+	/*
+	 * Count of ReceiverID_List received. Initialized to 0 at AKE_INIT.
+	 * Incremented after processing the RepeaterAuth_Send_ReceiverID_List.
+	 * When it rolls over re-auth has to be triggered.
+	 */
+	uint32_t seq_num_v;
+
+	/*
+	 * Count of RepeaterAuth_Stream_Manage msg propagated.
+	 * Initialized to 0 on AKE_INIT. Incremented after every successful
+	 * transmission of RepeaterAuth_Stream_Manage message. When it rolls
+	 * over re-Auth has to be triggered.
+	 */
+	uint32_t seq_num_m;
+
+	/* mei interface related information */
+	struct mei_cl_device *cldev;
+	struct mei_hdcp_data mei_data;
+
+	struct delayed_work hdcp2_check_work;
  };
struct intel_connector {
--
2.7.4

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