diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/hdcp')
7 files changed, 56 insertions, 31 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index 20e554e771d1..68a6481d7f8f 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -53,7 +53,7 @@ static uint8_t is_cp_desired_hdcp1(struct mod_hdcp *hdcp) */ for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) { if (hdcp->displays[i].state != MOD_HDCP_DISPLAY_INACTIVE && - !hdcp->displays[i].adjust.disable) { + hdcp->displays[i].adjust.disable != MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION) { is_auth_needed = 1; break; } @@ -74,7 +74,7 @@ static uint8_t is_cp_desired_hdcp2(struct mod_hdcp *hdcp) */ for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) { if (hdcp->displays[i].state != MOD_HDCP_DISPLAY_INACTIVE && - !hdcp->displays[i].adjust.disable) { + hdcp->displays[i].adjust.disable != MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION) { is_auth_needed = 1; break; } @@ -314,6 +314,9 @@ enum mod_hdcp_status mod_hdcp_add_display(struct mod_hdcp *hdcp, goto out; } + /* save current encryption states to restore after next authentication */ + mod_hdcp_save_current_encryption_states(hdcp); + /* reset existing authentication status */ status = reset_authentication(hdcp, output); if (status != MOD_HDCP_STATUS_SUCCESS) @@ -360,6 +363,9 @@ enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp, goto out; } + /* save current encryption states to restore after next authentication */ + mod_hdcp_save_current_encryption_states(hdcp); + /* stop current authentication */ status = reset_authentication(hdcp, output); if (status != MOD_HDCP_STATUS_SUCCESS) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h index 5c22cf7e6118..3ce91db560d1 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h @@ -331,6 +331,8 @@ enum mod_hdcp_status mod_hdcp_add_display_to_topology( struct mod_hdcp *hdcp, struct mod_hdcp_display *display); enum mod_hdcp_status mod_hdcp_remove_display_from_topology( struct mod_hdcp *hdcp, uint8_t index); +bool mod_hdcp_is_link_encryption_enabled(struct mod_hdcp *hdcp); +void mod_hdcp_save_current_encryption_states(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_create_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_destroy_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_validate_rx(struct mod_hdcp *hdcp); @@ -339,8 +341,6 @@ enum mod_hdcp_status mod_hdcp_hdcp1_validate_ksvlist_vp(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_enable_dp_stream_encryption( struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_link_maintenance(struct mod_hdcp *hdcp); -enum mod_hdcp_status mod_hdcp_hdcp1_get_link_encryption_status(struct mod_hdcp *hdcp, - enum mod_hdcp_encryption_status *encryption_status); enum mod_hdcp_status mod_hdcp_hdcp2_create_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_destroy_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_prepare_ake_init(struct mod_hdcp *hdcp); diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c index 73ca49f05bd3..eeac14300a2a 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c @@ -256,10 +256,12 @@ static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp, goto out; } - if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_link_maintenance, + mod_hdcp_execute_and_set(mod_hdcp_hdcp1_link_maintenance, &input->link_maintenance, &status, - hdcp, "link_maintenance")) - goto out; + hdcp, "link_maintenance"); + + if (status != MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_save_current_encryption_states(hdcp); out: return status; } @@ -425,19 +427,24 @@ static enum mod_hdcp_status authenticated_dp(struct mod_hdcp *hdcp, event_ctx->unexpected_event = 1; goto out; } - - if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus, - &input->bstatus_read, &status, - hdcp, "bstatus_read")) - goto out; - if (!mod_hdcp_execute_and_set(check_link_integrity_dp, - &input->link_integrity_check, &status, - hdcp, "link_integrity_check")) - goto out; - if (!mod_hdcp_execute_and_set(check_no_reauthentication_request_dp, - &input->reauth_request_check, &status, - hdcp, "reauth_request_check")) + if (!mod_hdcp_is_link_encryption_enabled(hdcp)) goto out; + + if (status == MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_execute_and_set(mod_hdcp_read_bstatus, + &input->bstatus_read, &status, + hdcp, "bstatus_read"); + if (status == MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_execute_and_set(check_link_integrity_dp, + &input->link_integrity_check, &status, + hdcp, "link_integrity_check"); + if (status == MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_execute_and_set(check_no_reauthentication_request_dp, + &input->reauth_request_check, &status, + hdcp, "reauth_request_check"); + + if (status != MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_save_current_encryption_states(hdcp); out: return status; } diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c index 24ab95b093f7..3dda8c1d83fc 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c @@ -93,7 +93,7 @@ enum mod_hdcp_status mod_hdcp_hdcp1_transition(struct mod_hdcp *hdcp, } break; case H1_A45_AUTHENTICATED: - if (input->link_maintenance != PASS) { + if (input->link_maintenance == FAIL) { /* 1A-07: consider invalid ri' a failure */ /* 1A-07a: consider read ri' not returned a failure */ fail_and_restart_in_ms(0, &status, output); @@ -243,8 +243,8 @@ enum mod_hdcp_status mod_hdcp_hdcp1_dp_transition(struct mod_hdcp *hdcp, } break; case D1_A4_AUTHENTICATED: - if (input->link_integrity_check != PASS || - input->reauth_request_check != PASS) { + if (input->link_integrity_check == FAIL || + input->reauth_request_check == FAIL) { /* 1A-07: restart hdcp on a link integrity failure */ fail_and_restart_in_ms(0, &status, output); break; diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c index a0895a7efda2..f164f6a5d4dc 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c @@ -564,11 +564,13 @@ static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp, event_ctx->unexpected_event = 1; goto out; } - - if (!process_rxstatus(hdcp, event_ctx, input, &status)) - goto out; - if (event_ctx->rx_id_list_ready) + if (!mod_hdcp_is_link_encryption_enabled(hdcp)) goto out; + + process_rxstatus(hdcp, event_ctx, input, &status); + + if (status != MOD_HDCP_STATUS_SUCCESS) + mod_hdcp_save_current_encryption_states(hdcp); out: return status; } diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c index e738c7ae66ec..b0306ed6d6b4 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c @@ -245,8 +245,8 @@ enum mod_hdcp_status mod_hdcp_hdcp2_transition(struct mod_hdcp *hdcp, HDCP_FULL_DDC_TRACE(hdcp); break; case H2_A5_AUTHENTICATED: - if (input->rxstatus_read != PASS || - input->reauth_request_check != PASS) { + if (input->rxstatus_read == FAIL || + input->reauth_request_check == FAIL) { fail_and_restart_in_ms(0, &status, output); break; } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { @@ -562,11 +562,11 @@ enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp, HDCP_FULL_DDC_TRACE(hdcp); break; case D2_A5_AUTHENTICATED: - if (input->rxstatus_read != PASS || - input->reauth_request_check != PASS) { + if (input->rxstatus_read == FAIL || + input->reauth_request_check == FAIL) { fail_and_restart_in_ms(0, &status, output); break; - } else if (input->link_integrity_check_dp != PASS) { + } else if (input->link_integrity_check_dp == FAIL) { if (hdcp->connection.hdcp2_retry_count >= 1) adjust->hdcp2.force_type = MOD_HDCP_FORCE_TYPE_0; fail_and_restart_in_ms(0, &status, output); diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c index 904ce9b88088..9d7ca316dc3f 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c @@ -914,3 +914,13 @@ enum mod_hdcp_status mod_hdcp_hdcp2_validate_stream_ready(struct mod_hdcp *hdcp) return status; } +bool mod_hdcp_is_link_encryption_enabled(struct mod_hdcp *hdcp) +{ + /* unsupported */ + return true; +} + +void mod_hdcp_save_current_encryption_states(struct mod_hdcp *hdcp) +{ + /* unsupported */ +} |