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@intel.com Reviewed-by: Uma Shankar uma.shankar@intel.com
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