>
> Request the ME to terminate the HDCP2.2 session for a port.
>
> On Success, ME FW will mark the intel port as Deauthenticated and terminate
> the wired HDCP2.2 Tx session started due to the cmd
> WIRED_INITIATE_HDCP2_SESSION.
>
> 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 and typos fixed [Uma]
> v5:
> Extra line is removed.
> v6:
> Collected the Rb-ed by.
> Rebased.
> v7:
> Adjust to the new mei interface.
> Fix for Kdoc.
> v8:
> K-Doc addition.[Tomas]
> v9:
> renamed func as mei_hdcp_* [Tomas]
> Inline function is defined for DDI index [Tomas]
>
> Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
> Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Ack
Thanks
Tomas
> ---
> drivers/misc/mei/hdcp/mei_hdcp.c | 55
> +++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 54 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
> b/drivers/misc/mei/hdcp/mei_hdcp.c
> index 167ccfeeca9e..615eed149837 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> @@ -653,6 +653,59 @@ static int mei_hdcp_enable_authentication(struct
> device *dev,
> return 0;
> }
>
> +/**
> + * mei_hdcp_close_session() - Close the Wired HDCP Tx session of ME FW per
> port.
> + * This also disables the authenticated state of the port.
> + * @dev: device corresponding to the mei_cl_device
> + * @hdcp_data: Intel HW specific hdcp data
> + *
> + * Return: 0 on Success, <0 on Failure
> + */
> +static int
> +mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
> +{
> + struct wired_cmd_close_session_in session_close_in = { { 0 } };
> + struct wired_cmd_close_session_out session_close_out = { { 0 } };
> + struct mei_cl_device *cldev;
> + ssize_t byte;
> +
> + if (!dev || !data)
> + return -EINVAL;
> +
> + cldev = to_mei_cl_device(dev);
> +
> + session_close_in.header.api_version = HDCP_API_VERSION;
> + session_close_in.header.command_id = WIRED_CLOSE_SESSION;
> + session_close_in.header.status = ME_HDCP_STATUS_SUCCESS;
> + session_close_in.header.buffer_len =
> + WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
> +
> + session_close_in.port.integrated_port_type = data->port_type;
> + session_close_in.port.physical_port = mei_get_ddi_index(data->port);
> +
> + byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
> + sizeof(session_close_in));
> + if (byte < 0) {
> + dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
> + return byte;
> + }
> +
> + byte = mei_cldev_recv(cldev, (u8 *)&session_close_out,
> + sizeof(session_close_out));
> + if (byte < 0) {
> + dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
> + return byte;
> + }
> +
> + if (session_close_out.header.status != ME_HDCP_STATUS_SUCCESS) {
> + dev_dbg(dev, "Session Close Failed. status: 0x%X\n",
> + session_close_out.header.status);
> + return -EIO;
> + }
> +
> + return 0;
> +}
> +
> static __attribute__((unused))
> struct i915_hdcp_component_ops mei_hdcp_ops = {
> .owner = THIS_MODULE,
> @@ -668,7 +721,7 @@ struct i915_hdcp_component_ops mei_hdcp_ops = {
> mei_hdcp_repeater_check_flow_prepare_ack,
> .verify_mprime = mei_hdcp_verify_mprime,
> .enable_hdcp_authentication = mei_hdcp_enable_authentication,
> - .close_hdcp_session = NULL,
> + .close_hdcp_session = mei_hdcp_close_session,
> };
>
> static int mei_hdcp_probe(struct mei_cl_device *cldev,
> --
> 2.7.4
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