>-----Original Message-----
>From: C, Ramalingam
>Sent: Saturday, July 14, 2018 8:45 AM
>To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
>daniel@xxxxxxxx; seanpaul@xxxxxxxxxxxx; Winkler, Tomas
><tomas.winkler@xxxxxxxxx>; Usyskin, Alexander <alexander.usyskin@xxxxxxxxx>;
>Shankar, Uma <uma.shankar@xxxxxxxxx>
>Cc: Sharma, Shashank <shashank.sharma@xxxxxxxxx>; C, Ramalingam
><ramalingam.c@xxxxxxxxx>
>Subject: [PATCH v6 28/35] misc/mei/hdcp: Store the HDCP Pairing info
>
>Provides Pairing info to ME to store.
>
>Pairing is a process to fast track the subsequent authentication with the same
>HDCP sink.
>
>On Success, received HDCP pairing info is stored in non-volatile memory of ME.
>
>v2:
> Rebased.
>v3:
> cldev is passed as first parameter [Tomas]
> Redundant comments and cast are removed [Tomas]
>v4:
> %zd for ssize_t [Alexander]
> %s/return -1/return -EIO [Alexander]
> Style fixed [Uma]
>v5:
> Rebased.
>v6:
> No change.
>
Looks ok to me.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
>Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
>---
> drivers/misc/mei/hdcp/mei_hdcp.c | 63
>+++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 62 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
>b/drivers/misc/mei/hdcp/mei_hdcp.c
>index d455d4e54f46..4349eff4d0fb 100644
>--- a/drivers/misc/mei/hdcp/mei_hdcp.c
>+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
>@@ -246,13 +246,74 @@ static int mei_verify_hprime(struct mei_cl_device
>*cldev,
> return 0;
> }
>
>+/*
>+ * mei_store_pairing_info:
>+ * Function to store pairing info received from panel
>+ *
>+ * cldev : Pointer for mei client device
>+ * data : Intel HW specific Data
>+ * pairing_info : Pointer for AKE_Send_Pairing_Info
>+ *
>+ * Returns 0 on Success, <0 on Failure
>+ */
>+static int
>+mei_store_pairing_info(struct mei_cl_device *cldev,
>+ struct mei_hdcp_data *data,
>+ struct hdcp2_ake_send_pairing_info *pairing_info) {
>+ struct wired_cmd_ake_send_pairing_info_in pairing_info_in = { { 0 } };
>+ struct wired_cmd_ake_send_pairing_info_out pairing_info_out = { { 0 } };
>+ struct device *dev;
>+ ssize_t byte;
>+
>+ if (!data || !pairing_info)
>+ return -EINVAL;
>+
>+ dev = &cldev->dev;
>+
>+ pairing_info_in.header.api_version = HDCP_API_VERSION;
>+ pairing_info_in.header.command_id =
>WIRED_AKE_SEND_PAIRING_INFO;
>+ pairing_info_in.header.status = ME_HDCP_STATUS_SUCCESS;
>+ pairing_info_in.header.buffer_len =
>+
> WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
>+
>+ pairing_info_in.port.integrated_port_type = data->port_type;
>+ pairing_info_in.port.physical_port = data->port;
>+
>+ memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
>+ sizeof(pairing_info_in.e_kh_km));
>+
>+ byte = mei_cldev_send(cldev, (u8 *)&pairing_info_in,
>+ sizeof(pairing_info_in));
>+ if (byte < 0) {
>+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
>+ return byte;
>+ }
>+
>+ byte = mei_cldev_recv(cldev, (u8 *)&pairing_info_out,
>+ sizeof(pairing_info_out));
>+ if (byte < 0) {
>+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
>+ return byte;
>+ }
>+
>+ if (pairing_info_out.header.status != ME_HDCP_STATUS_SUCCESS) {
>+ dev_dbg(dev, "ME cmd 0x%08X failed. Status: 0x%X\n",
>+ WIRED_AKE_SEND_PAIRING_INFO,
>+ pairing_info_out.header.status);
>+ return -EIO;
>+ }
>+
>+ return 0;
>+}
>+
> struct i915_hdcp_component_ops mei_hdcp_component_ops = {
> .owner = THIS_MODULE,
> .initiate_hdcp2_session = mei_initiate_hdcp2_session,
> .verify_receiver_cert_prepare_km =
> mei_verify_receiver_cert_prepare_km,
> .verify_hprime = mei_verify_hprime,
>- .store_pairing_info = NULL,
>+ .store_pairing_info = mei_store_pairing_info,
> .initiate_locality_check = NULL,
> .verify_lprime = NULL,
> .get_session_key = NULL,
>--
>2.7.4
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