[PATCH v10 4/6] misc/mei/hdcp: Fill transcoder index in port info

[Winkler, Tomas]

> For gen12+ platform we need to pass the transcoder info as part of the port
> info into ME FW.
> 
> This change fills the payload for ME FW from hdcp_port_data.
> 
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> Acked-by: Jani Nikula <jani.nikula at intel.com>
> Reviewed-by: Shashank Sharma <shashank.sharma at intel.com>
> ---
>  drivers/misc/mei/hdcp/mei_hdcp.c | 11 +++++++++++
> drivers/misc/mei/hdcp/mei_hdcp.h |  4 +++-
>  2 files changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
> b/drivers/misc/mei/hdcp/mei_hdcp.c
> index 3638c77eba26..93027fd96c71 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> @@ -58,6 +58,7 @@ mei_hdcp_initiate_session(struct device *dev, struct
> hdcp_port_data *data,
> 
>  	session_init_in.port.integrated_port_type = data->port_type;
>  	session_init_in.port.physical_port = (u8)data->fw_ddi;
> +	session_init_in.port.attached_transcoder = (u8)data->fw_tc;
>  	session_init_in.protocol = data->protocol;
> 
>  	byte = mei_cldev_send(cldev, (u8 *)&session_init_in, @@ -127,6
> +128,7 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
> 
>  	verify_rxcert_in.port.integrated_port_type = data->port_type;
>  	verify_rxcert_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_rxcert_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	verify_rxcert_in.cert_rx = rx_cert->cert_rx;
>  	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
> @@ -197,6 +199,7 @@ mei_hdcp_verify_hprime(struct device *dev, struct
> hdcp_port_data *data,
> 
>  	send_hprime_in.port.integrated_port_type = data->port_type;
>  	send_hprime_in.port.physical_port = (u8)data->fw_ddi;
> +	send_hprime_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
>  	       HDCP_2_2_H_PRIME_LEN);
> @@ -254,6 +257,7 @@ mei_hdcp_store_pairing_info(struct device *dev, struct
> hdcp_port_data *data,
> 
>  	pairing_info_in.port.integrated_port_type = data->port_type;
>  	pairing_info_in.port.physical_port = (u8)data->fw_ddi;
> +	pairing_info_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
>  	       HDCP_2_2_E_KH_KM_LEN);
> @@ -312,6 +316,7 @@ mei_hdcp_initiate_locality_check(struct device *dev,
> 
>  	lc_init_in.port.integrated_port_type = data->port_type;
>  	lc_init_in.port.physical_port = (u8)data->fw_ddi;
> +	lc_init_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
>  	if (byte < 0) {
> @@ -367,6 +372,7 @@ mei_hdcp_verify_lprime(struct device *dev, struct
> hdcp_port_data *data,
> 
>  	verify_lprime_in.port.integrated_port_type = data->port_type;
>  	verify_lprime_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_lprime_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
>  	       HDCP_2_2_L_PRIME_LEN);
> @@ -424,6 +430,7 @@ static int mei_hdcp_get_session_key(struct device
> *dev,
> 
>  	get_skey_in.port.integrated_port_type = data->port_type;
>  	get_skey_in.port.physical_port = (u8)data->fw_ddi;
> +	get_skey_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
>  	if (byte < 0) {
> @@ -488,6 +495,7 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct
> device *dev,
> 
>  	verify_repeater_in.port.integrated_port_type = data->port_type;
>  	verify_repeater_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_repeater_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
>  	       HDCP_2_2_RXINFO_LEN);
> @@ -558,6 +566,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
> 
>  	verify_mprime_in.port.integrated_port_type = data->port_type;
>  	verify_mprime_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_mprime_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
>  	       HDCP_2_2_MPRIME_LEN);
> @@ -619,6 +628,7 @@ static int mei_hdcp_enable_authentication(struct
> device *dev,
> 
>  	enable_auth_in.port.integrated_port_type = data->port_type;
>  	enable_auth_in.port.physical_port = (u8)data->fw_ddi;
> +	enable_auth_in.port.attached_transcoder = (u8)data->fw_tc;
>  	enable_auth_in.stream_type = data->streams[0].stream_type;
> 
>  	byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in, @@ -673,6
> +683,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data
> *data)
> 
>  	session_close_in.port.integrated_port_type = data->port_type;
>  	session_close_in.port.physical_port = (u8)data->fw_ddi;
> +	session_close_in.port.attached_transcoder = (u8)data->fw_tc;
> 
>  	byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
>  			      sizeof(session_close_in));
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h
> b/drivers/misc/mei/hdcp/mei_hdcp.h
> index e60282eb2d48..58e439d2fc1a 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.h
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.h
> @@ -184,8 +184,10 @@ struct hdcp_cmd_no_data {
>  /* Uniquely identifies the hdcp port being addressed for a given command. */
> struct hdcp_port_id {
>  	u8	integrated_port_type;
> +	/* Used until Gen11.5. Must be zero for Gen11.5+ */
What are you reference here, the member bellow or above? -  It is better to document it in using kdoc! 
Next, what part of the code is validating this?  

>  	u8	physical_port;
> -	u16	reserved;

> +	u8	attached_transcoder;  
Also here need the documentation 
> +	u8	reserved;
>  } __packed;
> 
>  /*
> --
> 2.20.1