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drm/i915: mei_hdcp: I915 sends ddi index as per ME FW

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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.

v2:
  Copyright years are bumped [Tomas]

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190828164216.405-2-ramalingam.c@intel.com
This commit is contained in:
Ramalingam C 2019-08-28 22:12:11 +05:30 committed by Uma Shankar
parent 11988e3938
commit 0dcceb35a1
4 changed files with 42 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpu/drm/i915/display/intel_hdcp.c
View File

@ -1,9 +1,11 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2017 Google, Inc.
* Copyright _ 2017-2019, Intel Corporation.
*
* Authors:
* Sean Paul <seanpaul@chromium.org>
* Ramalingam C <ramalingam.c@intel.com>
*/
#include <linux/component.h>
@ -1749,13 +1751,26 @@ 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;

34
drivers/misc/mei/hdcp/mei_hdcp.c
View File

@ -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));

12
drivers/misc/mei/hdcp/mei_hdcp.h
View File

@ -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__ */

18
include/drm/i915_mei_hdcp_interface.h
View File

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: (GPL-2.0+) */
/*
* Copyright © 2017-2018 Intel Corporation
* Copyright © 2017-2019 Intel Corporation
*
* Authors:
* Ramalingam C <ramalingam.c@intel.com>
@ -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,
};
/**
* 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;