Re: [PATCH v3 20/40] drm/i915: Define HDCP2.2 related variables

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>-----Original Message-----
>From: dri-devel [mailto:dri-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of
>Ramalingam C
>Sent: Tuesday, April 3, 2018 7:28 PM
>To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
>seanpaul@xxxxxxxxxxxx; daniel@xxxxxxxx; chris@xxxxxxxxxxxxxxxxxx;
>jani.nikula@xxxxxxxxxxxxxxx; Winkler, Tomas <tomas.winkler@xxxxxxxxx>;
>Usyskin, Alexander <alexander.usyskin@xxxxxxxxx>
>Cc: Vivi, Rodrigo <rodrigo.vivi@xxxxxxxxx>
>Subject: [PATCH v3 20/40] drm/i915: Define HDCP2.2 related variables
>
>For upcoming implementation of HDCP2.2 in I915, important variable required for
>HDCP2.2 are defined.
>
>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
>
>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 fdffcb833cd2..ca06d9a158f6 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 {
>@@ -383,6 +410,40 @@ struct intel_hdcp {
> 	uint64_t hdcp_value; /* protected by hdcp_mutex */
> 	struct delayed_work hdcp_check_work;
> 	struct work_struct hdcp_prop_work;
>+
>+	/** HDCP2.2 related definitions **/

Drop extra *.

>+	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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