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

[Ramalingam C]

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 at intel.com>
>> ---
>>   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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