diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index b963226e8af4..2bcab9c9b96e 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -39,8 +39,12 @@ static void push_error_status(struct mod_hdcp *hdcp, if (is_hdcp1(hdcp)) { hdcp->connection.hdcp1_retry_count++; + if (hdcp->connection.hdcp1_retry_count == MAX_NUM_OF_ATTEMPTS) + hdcp->connection.link.adjust.hdcp1.disable = 1; } else if (is_hdcp2(hdcp)) { hdcp->connection.hdcp2_retry_count++; + if (hdcp->connection.hdcp2_retry_count == MAX_NUM_OF_ATTEMPTS) + hdcp->connection.link.adjust.hdcp2.disable = 1; } } @@ -59,8 +63,7 @@ static uint8_t is_cp_desired_hdcp1(struct mod_hdcp *hdcp) } } - return (hdcp->connection.hdcp1_retry_count < MAX_NUM_OF_ATTEMPTS) && - is_auth_needed && + return is_auth_needed && !hdcp->connection.link.adjust.hdcp1.disable && !hdcp->connection.is_hdcp1_revoked; } @@ -80,8 +83,7 @@ static uint8_t is_cp_desired_hdcp2(struct mod_hdcp *hdcp) } } - return (hdcp->connection.hdcp2_retry_count < MAX_NUM_OF_ATTEMPTS) && - is_auth_needed && + return is_auth_needed && !hdcp->connection.link.adjust.hdcp2.disable && !hdcp->connection.is_hdcp2_revoked; } @@ -392,6 +394,60 @@ out: return status; } +enum mod_hdcp_status mod_hdcp_update_authentication(struct mod_hdcp *hdcp, + uint8_t index, + struct mod_hdcp_link_adjustment *link_adjust, + struct mod_hdcp_display_adjustment *display_adjust, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_display *display = NULL; + + HDCP_TOP_INTERFACE_TRACE_WITH_INDEX(hdcp, index); + memset(output, 0, sizeof(struct mod_hdcp_output)); + + /* find display in connection */ + display = get_active_display_at_index(hdcp, index); + if (!display) { + status = MOD_HDCP_STATUS_DISPLAY_NOT_FOUND; + goto out; + } + + /* skip if no changes */ + if (memcmp(link_adjust, &hdcp->connection.link.adjust, + sizeof(struct mod_hdcp_link_adjustment)) == 0 && + memcmp(display_adjust, &display->adjust, + sizeof(struct mod_hdcp_display_adjustment)) == 0) { + status = MOD_HDCP_STATUS_SUCCESS; + goto out; + } + + /* stop current authentication */ + status = reset_authentication(hdcp, output); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + /* clear retry counters */ + reset_retry_counts(hdcp); + + /* reset error trace */ + memset(&hdcp->connection.trace, 0, sizeof(hdcp->connection.trace)); + + /* set new adjustment */ + hdcp->connection.link.adjust = *link_adjust; + display->adjust = *display_adjust; + + /* request authentication when connection is not reset */ + if (current_state(hdcp) != HDCP_UNINITIALIZED) + /* wait 100ms to debounce simultaneous updates for different indices */ + callback_in_ms(100, output); + +out: + if (status != MOD_HDCP_STATUS_SUCCESS) + push_error_status(hdcp, status); + return status; +} + enum mod_hdcp_status mod_hdcp_query_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_display_query *query) { diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h index c590493fd293..c1b485f5fb71 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -282,15 +282,22 @@ enum mod_hdcp_status mod_hdcp_setup(struct mod_hdcp *hdcp, /* called per link on link destroy */ enum mod_hdcp_status mod_hdcp_teardown(struct mod_hdcp *hdcp); -/* called per display on cp_desired set to true */ +/* called per display after stream is enabled */ enum mod_hdcp_status mod_hdcp_add_display(struct mod_hdcp *hdcp, struct mod_hdcp_link *link, struct mod_hdcp_display *display, struct mod_hdcp_output *output); -/* called per display on cp_desired set to false */ +/* called per display before stream is disabled */ enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_output *output); +/* called per display to apply new authentication adjustment */ +enum mod_hdcp_status mod_hdcp_update_authentication(struct mod_hdcp *hdcp, + uint8_t index, + struct mod_hdcp_link_adjustment *link_adjust, + struct mod_hdcp_display_adjustment *display_adjust, + struct mod_hdcp_output *output); + /* called to query hdcp information on a specific index */ enum mod_hdcp_status mod_hdcp_query_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_display_query *query);