[PATCH v9 1/6] drm/i915: mei_hdcp: I915 sends ddi index as per ME FW
Sharma, Shashank
shashank.sharma at intel.com
Tue Aug 27 04:24:18 UTC 2019
Hello Ram,
On 8/22/2019 8:48 PM, Ramalingam C wrote:
> I915 converts it's port value into ddi index defiend by ME FW
> and pass it as a member of hdcp_port_data structure.
>
> Hence expose the enum mei_fw_ddi to I915 through
> i915_mei_interface.h.
>
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> Acked-by: Jani Nikula <jani.nikula at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_hdcp.c | 15 +++++++++-
> drivers/misc/mei/hdcp/mei_hdcp.c | 34 ++++++++---------------
> drivers/misc/mei/hdcp/mei_hdcp.h | 12 --------
> include/drm/i915_mei_hdcp_interface.h | 16 +++++++++--
> 4 files changed, 39 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 6ec5ceeab601..534832f435dc 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -1749,13 +1749,26 @@ static const struct component_ops i915_hdcp_component_ops = {
> .unbind = i915_hdcp_component_unbind,
> };
>
> +static inline
> +enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
> +{
> + switch (port) {
> + case PORT_A:
> + return MEI_DDI_A;
> + case PORT_B ... PORT_F:
> + return (enum mei_fw_ddi)port;
> + default:
> + return MEI_DDI_INVALID_PORT;
> + }
> +}
> +
> static inline int initialize_hdcp_port_data(struct intel_connector *connector,
> const struct intel_hdcp_shim *shim)
> {
> struct intel_hdcp *hdcp = &connector->hdcp;
> struct hdcp_port_data *data = &hdcp->port_data;
>
> - data->port = connector->encoder->port;
> + data->fw_ddi = intel_get_mei_fw_ddi_index(connector->encoder->port);
> data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
> data->protocol = (u8)shim->protocol;
>
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
> index c681f6fab342..3638c77eba26 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> @@ -27,18 +27,6 @@
>
> #include "mei_hdcp.h"
>
> -static inline u8 mei_get_ddi_index(enum port port)
> -{
> - switch (port) {
> - case PORT_A:
> - return MEI_DDI_A;
> - case PORT_B ... PORT_F:
> - return (u8)port;
> - default:
> - return MEI_DDI_INVALID_PORT;
> - }
> -}
> -
> /**
> * mei_hdcp_initiate_session() - Initiate a Wired HDCP2.2 Tx Session in ME FW
> * @dev: device corresponding to the mei_cl_device
> @@ -69,7 +57,7 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
> WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
>
> session_init_in.port.integrated_port_type = data->port_type;
> - session_init_in.port.physical_port = mei_get_ddi_index(data->port);
> + session_init_in.port.physical_port = (u8)data->fw_ddi;
> session_init_in.protocol = data->protocol;
>
> byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
> @@ -138,7 +126,7 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
> WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
>
> verify_rxcert_in.port.integrated_port_type = data->port_type;
> - verify_rxcert_in.port.physical_port = mei_get_ddi_index(data->port);
> + verify_rxcert_in.port.physical_port = (u8)data->fw_ddi;
>
> verify_rxcert_in.cert_rx = rx_cert->cert_rx;
> memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
> @@ -208,7 +196,7 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
> send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
>
> send_hprime_in.port.integrated_port_type = data->port_type;
> - send_hprime_in.port.physical_port = mei_get_ddi_index(data->port);
> + send_hprime_in.port.physical_port = (u8)data->fw_ddi;
>
> memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
> HDCP_2_2_H_PRIME_LEN);
> @@ -265,7 +253,7 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
> WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
>
> pairing_info_in.port.integrated_port_type = data->port_type;
> - pairing_info_in.port.physical_port = mei_get_ddi_index(data->port);
> + pairing_info_in.port.physical_port = (u8)data->fw_ddi;
>
> memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
> HDCP_2_2_E_KH_KM_LEN);
> @@ -323,7 +311,7 @@ mei_hdcp_initiate_locality_check(struct device *dev,
> lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
>
> lc_init_in.port.integrated_port_type = data->port_type;
> - lc_init_in.port.physical_port = mei_get_ddi_index(data->port);
> + lc_init_in.port.physical_port = (u8)data->fw_ddi;
>
> byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
> if (byte < 0) {
> @@ -378,7 +366,7 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
> WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
>
> verify_lprime_in.port.integrated_port_type = data->port_type;
> - verify_lprime_in.port.physical_port = mei_get_ddi_index(data->port);
> + verify_lprime_in.port.physical_port = (u8)data->fw_ddi;
>
> memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
> HDCP_2_2_L_PRIME_LEN);
> @@ -435,7 +423,7 @@ static int mei_hdcp_get_session_key(struct device *dev,
> get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
>
> get_skey_in.port.integrated_port_type = data->port_type;
> - get_skey_in.port.physical_port = mei_get_ddi_index(data->port);
> + get_skey_in.port.physical_port = (u8)data->fw_ddi;
>
> byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
> if (byte < 0) {
> @@ -499,7 +487,7 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
> WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
>
> verify_repeater_in.port.integrated_port_type = data->port_type;
> - verify_repeater_in.port.physical_port = mei_get_ddi_index(data->port);
> + verify_repeater_in.port.physical_port = (u8)data->fw_ddi;
>
> memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
> HDCP_2_2_RXINFO_LEN);
> @@ -569,7 +557,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
> WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
>
> verify_mprime_in.port.integrated_port_type = data->port_type;
> - verify_mprime_in.port.physical_port = mei_get_ddi_index(data->port);
> + verify_mprime_in.port.physical_port = (u8)data->fw_ddi;
>
> memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
> HDCP_2_2_MPRIME_LEN);
> @@ -630,7 +618,7 @@ static int mei_hdcp_enable_authentication(struct device *dev,
> enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN;
>
> enable_auth_in.port.integrated_port_type = data->port_type;
> - enable_auth_in.port.physical_port = mei_get_ddi_index(data->port);
> + enable_auth_in.port.physical_port = (u8)data->fw_ddi;
> enable_auth_in.stream_type = data->streams[0].stream_type;
>
> byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
> @@ -684,7 +672,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
> 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);
> + session_close_in.port.physical_port = (u8)data->fw_ddi;
>
> 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 e4b1cd54c853..e60282eb2d48 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.h
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.h
> @@ -362,16 +362,4 @@ struct wired_cmd_repeater_auth_stream_req_out {
> struct hdcp_cmd_header header;
> struct hdcp_port_id port;
> } __packed;
> -
> -enum mei_fw_ddi {
> - MEI_DDI_INVALID_PORT = 0x0,
> -
> - MEI_DDI_B = 1,
> - MEI_DDI_C,
> - MEI_DDI_D,
> - MEI_DDI_E,
> - MEI_DDI_F,
> - MEI_DDI_A = 7,
> - MEI_DDI_RANGE_END = MEI_DDI_A,
> -};
> #endif /* __MEI_HDCP_H__ */
> diff --git a/include/drm/i915_mei_hdcp_interface.h b/include/drm/i915_mei_hdcp_interface.h
> index 8c344255146a..a97acf1c9710 100644
> --- a/include/drm/i915_mei_hdcp_interface.h
> +++ b/include/drm/i915_mei_hdcp_interface.h
> @@ -42,9 +42,21 @@ enum hdcp_wired_protocol {
> HDCP_PROTOCOL_DP
> };
>
> +enum mei_fw_ddi {
> + MEI_DDI_INVALID_PORT = 0x0,
> +
> + MEI_DDI_B = 1,
> + MEI_DDI_C,
> + MEI_DDI_D,
> + MEI_DDI_E,
> + MEI_DDI_F,
> + MEI_DDI_A = 7,
> + MEI_DDI_RANGE_END = MEI_DDI_A,
> +};
> +
I am seeing that the definition of above enum is moved from mei_hdcp.h
to i915_mei_hdcp_interface.h, but we have not added this header in any
of the mei_ files. Does this mean no one was using the enum in mei
interface ? Or that would be added in some upcoming patches of the series ?
- Shashank
> /**
> * struct hdcp_port_data - intel specific HDCP port data
> - * @port: port index as per I915
> + * @fw_ddi: ddi index as per ME FW
> * @port_type: HDCP port type as per ME FW classification
> * @protocol: HDCP adaptation as per ME FW
> * @k: No of streams transmitted on a port. Only on DP MST this is != 1
> @@ -56,7 +68,7 @@ enum hdcp_wired_protocol {
> * streams
> */
> struct hdcp_port_data {
> - enum port port;
> + enum mei_fw_ddi fw_ddi;
> u8 port_type;
> u8 protocol;
> u16 k;
More information about the dri-devel
mailing list