/* * Copyright 2012-14 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD * */ #ifndef DC_LINK_H_ #define DC_LINK_H_ #include "dc.h" #include "dc_types.h" #include "grph_object_defs.h" struct link_resource; enum dc_link_fec_state { dc_link_fec_not_ready, dc_link_fec_ready, dc_link_fec_enabled }; struct dc_link_status { bool link_active; struct dpcd_caps *dpcd_caps; }; struct dprx_states { bool cable_id_written; }; /* DP MST stream allocation (payload bandwidth number) */ struct link_mst_stream_allocation { /* DIG front */ const struct stream_encoder *stream_enc; /* HPO DP Stream Encoder */ const struct hpo_dp_stream_encoder *hpo_dp_stream_enc; /* associate DRM payload table with DC stream encoder */ uint8_t vcp_id; /* number of slots required for the DP stream in transport packet */ uint8_t slot_count; }; /* DP MST stream allocation table */ struct link_mst_stream_allocation_table { /* number of DP video streams */ int stream_count; /* array of stream allocations */ struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM]; }; struct edp_trace_power_timestamps { uint64_t poweroff; uint64_t poweron; }; struct dp_trace_lt_counts { unsigned int total; unsigned int fail; }; struct dp_trace_lt { struct dp_trace_lt_counts counts; struct dp_trace_timestamps { unsigned long long start; unsigned long long end; } timestamps; enum link_training_result result; bool is_logged; }; struct dp_trace { struct dp_trace_lt detect_lt_trace; struct dp_trace_lt commit_lt_trace; unsigned int link_loss_count; bool is_initialized; struct edp_trace_power_timestamps edp_trace_power_timestamps; }; /* PSR feature flags */ struct psr_settings { bool psr_feature_enabled; // PSR is supported by sink bool psr_allow_active; // PSR is currently active enum dc_psr_version psr_version; // Internal PSR version, determined based on DPCD bool psr_vtotal_control_support; // Vtotal control is supported by sink /* These parameters are calculated in Driver, * based on display timing and Sink capabilities. * If VBLANK region is too small and Sink takes a long time * to set up RFB, it may take an extra frame to enter PSR state. */ bool psr_frame_capture_indication_req; unsigned int psr_sdp_transmit_line_num_deadline; uint8_t force_ffu_mode; unsigned int psr_power_opt; }; /* To split out "global" and "per-panel" config settings. * Add a struct dc_panel_config under dc_link */ struct dc_panel_config { // extra panel power sequence parameters struct pps { unsigned int extra_t3_ms; unsigned int extra_t7_ms; unsigned int extra_delay_backlight_off; unsigned int extra_post_t7_ms; unsigned int extra_pre_t11_ms; unsigned int extra_t12_ms; unsigned int extra_post_OUI_ms; } pps; // ABM struct varib { unsigned int varibright_feature_enable; unsigned int def_varibright_level; unsigned int abm_config_setting; } varib; // edp DSC struct dsc { bool disable_dsc_edp; unsigned int force_dsc_edp_policy; } dsc; /* eDP ILR */ struct ilr { bool optimize_edp_link_rate; /* eDP ILR */ } ilr; }; /* * A link contains one or more sinks and their connected status. * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported. */ struct dc_link { struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK]; unsigned int sink_count; struct dc_sink *local_sink; unsigned int link_index; enum dc_connection_type type; enum signal_type connector_signal; enum dc_irq_source irq_source_hpd; enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse */ bool is_hpd_filter_disabled; bool dp_ss_off; bool link_state_valid; bool aux_access_disabled; bool sync_lt_in_progress; bool is_internal_display; /* TODO: Rename. Flag an endpoint as having a programmable mapping to a * DIG encoder. */ bool is_dig_mapping_flexible; bool hpd_status; /* HPD status of link without physical HPD pin. */ bool is_hpd_pending; /* Indicates a new received hpd */ bool edp_sink_present; struct dp_trace dp_trace; /* caps is the same as reported_link_cap. link_traing use * reported_link_cap. Will clean up. TODO */ struct dc_link_settings reported_link_cap; struct dc_link_settings verified_link_cap; struct dc_link_settings cur_link_settings; struct dc_lane_settings cur_lane_setting[LANE_COUNT_DP_MAX]; struct dc_link_settings preferred_link_setting; /* preferred_training_settings are override values that * come from DM. DM is responsible for the memory * management of the override pointers. */ struct dc_link_training_overrides preferred_training_settings; struct dp_audio_test_data audio_test_data; uint8_t ddc_hw_inst; uint8_t hpd_src; uint8_t link_enc_hw_inst; /* DIG link encoder ID. Used as index in link encoder resource pool. * For links with fixed mapping to DIG, this is not changed after dc_link * object creation. */ enum engine_id eng_id; bool test_pattern_enabled; union compliance_test_state compliance_test_state; void *priv; struct ddc_service *ddc; bool aux_mode; /* Private to DC core */ const struct dc *dc; struct dc_context *ctx; struct panel_cntl *panel_cntl; struct link_encoder *link_enc; struct graphics_object_id link_id; /* Endpoint type distinguishes display endpoints which do not have entries * in the BIOS connector table from those that do. Helps when tracking link * encoder to display endpoint assignments. */ enum display_endpoint_type ep_type; union ddi_channel_mapping ddi_channel_mapping; struct connector_device_tag_info device_tag; struct dpcd_caps dpcd_caps; uint32_t dongle_max_pix_clk; unsigned short chip_caps; unsigned int dpcd_sink_count; #if defined(CONFIG_DRM_AMD_DC_HDCP) struct hdcp_caps hdcp_caps; #endif enum edp_revision edp_revision; union dpcd_sink_ext_caps dpcd_sink_ext_caps; struct psr_settings psr_settings; /* Drive settings read from integrated info table */ struct dc_lane_settings bios_forced_drive_settings; /* Vendor specific LTTPR workaround variables */ uint8_t vendor_specific_lttpr_link_rate_wa; bool apply_vendor_specific_lttpr_link_rate_wa; /* MST record stream using this link */ struct link_flags { bool dp_keep_receiver_powered; bool dp_skip_DID2; bool dp_skip_reset_segment; bool dp_mot_reset_segment; /* Some USB4 docks do not handle turning off MST DSC once it has been enabled. */ bool dpia_mst_dsc_always_on; /* Forced DPIA into TBT3 compatibility mode. */ bool dpia_forced_tbt3_mode; bool dongle_mode_timing_override; } wa_flags; struct link_mst_stream_allocation_table mst_stream_alloc_table; struct dc_link_status link_status; struct dprx_states dprx_states; struct gpio *hpd_gpio; enum dc_link_fec_state fec_state; struct dc_panel_config panel_config; struct phy_state phy_state; }; const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link); /** * dc_get_link_at_index() - Return an enumerated dc_link. * * dc_link order is constant and determined at * boot time. They cannot be created or destroyed. * Use dc_get_caps() to get number of links. */ static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index) { return dc->links[link_index]; } static inline void get_edp_links(const struct dc *dc, struct dc_link **edp_links, int *edp_num) { int i; *edp_num = 0; for (i = 0; i < dc->link_count; i++) { // report any eDP links, even unconnected DDI's if (!dc->links[i]) continue; if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) { edp_links[*edp_num] = dc->links[i]; if (++(*edp_num) == MAX_NUM_EDP) return; } } } static inline bool dc_get_edp_link_panel_inst(const struct dc *dc, const struct dc_link *link, unsigned int *inst_out) { struct dc_link *edp_links[MAX_NUM_EDP]; int edp_num; if (link->connector_signal != SIGNAL_TYPE_EDP) return false; get_edp_links(dc, edp_links, &edp_num); if ((edp_num > 1) && (link->link_index > edp_links[0]->link_index)) *inst_out = 1; else *inst_out = 0; return true; } /* Set backlight level of an embedded panel (eDP, LVDS). * backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer * and 16 bit fractional, where 1.0 is max backlight value. */ bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t backlight_pwm_u16_16, uint32_t frame_ramp); /* Set/get nits-based backlight level of an embedded panel (eDP, LVDS). */ bool dc_link_set_backlight_level_nits(struct dc_link *link, bool isHDR, uint32_t backlight_millinits, uint32_t transition_time_in_ms); bool dc_link_get_backlight_level_nits(struct dc_link *link, uint32_t *backlight_millinits, uint32_t *backlight_millinits_peak); bool dc_link_backlight_enable_aux(struct dc_link *link, bool enable); bool dc_link_read_default_bl_aux(struct dc_link *link, uint32_t *backlight_millinits); bool dc_link_set_default_brightness_aux(struct dc_link *link); int dc_link_get_backlight_level(const struct dc_link *dc_link); int dc_link_get_target_backlight_pwm(const struct dc_link *link); bool dc_link_set_psr_allow_active(struct dc_link *dc_link, const bool *enable, bool wait, bool force_static, const unsigned int *power_opts); bool dc_link_get_psr_state(const struct dc_link *dc_link, enum dc_psr_state *state); bool dc_link_setup_psr(struct dc_link *dc_link, const struct dc_stream_state *stream, struct psr_config *psr_config, struct psr_context *psr_context); bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable); void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency); void dc_link_blank_all_dp_displays(struct dc *dc); void dc_link_blank_all_edp_displays(struct dc *dc); void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init); bool dc_link_set_sink_vtotal_in_psr_active(const struct dc_link *link, uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su); /* Request DC to detect if there is a Panel connected. * boot - If this call is during initial boot. * Return false for any type of detection failure or MST detection * true otherwise. True meaning further action is required (status update * and OS notification). */ enum dc_detect_reason { DETECT_REASON_BOOT, DETECT_REASON_RESUMEFROMS3S4, DETECT_REASON_HPD, DETECT_REASON_HPDRX, DETECT_REASON_FALLBACK, DETECT_REASON_RETRAIN, DETECT_REASON_TDR, }; bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason); bool dc_link_get_hpd_state(struct dc_link *dc_link); enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx); enum dc_status dc_link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn); enum dc_status dc_link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn); /* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt). * Return: * true - Downstream port status changed. DM should call DC to do the * detection. * false - no change in Downstream port status. No further action required * from DM. */ bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link, union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss, bool defer_handling, bool *has_left_work); /* * On eDP links this function call will stall until T12 has elapsed. * If the panel is not in power off state, this function will return * immediately. */ bool dc_link_wait_for_t12(struct dc_link *link); void dc_link_dp_handle_automated_test(struct dc_link *link); void dc_link_dp_handle_link_loss(struct dc_link *link); bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link); struct dc_sink_init_data; struct dc_sink *dc_link_add_remote_sink( struct dc_link *dc_link, const uint8_t *edid, int len, struct dc_sink_init_data *init_data); void dc_link_remove_remote_sink( struct dc_link *link, struct dc_sink *sink); /* Used by diagnostics for virtual link at the moment */ void dc_link_dp_set_drive_settings( struct dc_link *link, const struct link_resource *link_res, struct link_training_settings *lt_settings); bool dc_link_dp_perform_link_training_skip_aux( struct dc_link *link, const struct link_resource *link_res, const struct dc_link_settings *link_setting); enum link_training_result dc_link_dp_perform_link_training( struct dc_link *link, const struct link_resource *link_res, const struct dc_link_settings *link_settings, bool skip_video_pattern); bool dc_link_dp_sync_lt_begin(struct dc_link *link); enum link_training_result dc_link_dp_sync_lt_attempt( struct dc_link *link, const struct link_resource *link_res, struct dc_link_settings *link_setting, struct dc_link_training_overrides *lt_settings); bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down); void dc_link_dp_enable_hpd(const struct dc_link *link); void dc_link_dp_disable_hpd(const struct dc_link *link); bool dc_link_dp_set_test_pattern( struct dc_link *link, enum dp_test_pattern test_pattern, enum dp_test_pattern_color_space test_pattern_color_space, const struct link_training_settings *p_link_settings, const unsigned char *p_custom_pattern, unsigned int cust_pattern_size); bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap); void dc_link_enable_hpd_filter(struct dc_link *link, bool enable); bool dc_link_is_dp_sink_present(struct dc_link *link); bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type); /* * DPCD access interfaces */ #ifdef CONFIG_DRM_AMD_DC_HDCP bool dc_link_is_hdcp14(struct dc_link *link, enum signal_type signal); bool dc_link_is_hdcp22(struct dc_link *link, enum signal_type signal); #endif void dc_link_set_drive_settings(struct dc *dc, struct link_training_settings *lt_settings, const struct dc_link *link); void dc_link_set_preferred_link_settings(struct dc *dc, struct dc_link_settings *link_setting, struct dc_link *link); void dc_link_set_preferred_training_settings(struct dc *dc, struct dc_link_settings *link_setting, struct dc_link_training_overrides *lt_overrides, struct dc_link *link, bool skip_immediate_retrain); void dc_link_enable_hpd(const struct dc_link *link); void dc_link_disable_hpd(const struct dc_link *link); void dc_link_set_test_pattern(struct dc_link *link, enum dp_test_pattern test_pattern, enum dp_test_pattern_color_space test_pattern_color_space, const struct link_training_settings *p_link_settings, const unsigned char *p_custom_pattern, unsigned int cust_pattern_size); uint32_t dc_link_bandwidth_kbps( const struct dc_link *link, const struct dc_link_settings *link_setting); const struct dc_link_settings *dc_link_get_link_cap( const struct dc_link *link); void dc_link_overwrite_extended_receiver_cap( struct dc_link *link); bool dc_is_oem_i2c_device_present( struct dc *dc, size_t slave_address ); bool dc_submit_i2c( struct dc *dc, uint32_t link_index, struct i2c_command *cmd); bool dc_submit_i2c_oem( struct dc *dc, struct i2c_command *cmd); uint32_t dc_bandwidth_in_kbps_from_timing( const struct dc_crtc_timing *timing); bool dc_link_is_fec_supported(const struct dc_link *link); bool dc_link_should_enable_fec(const struct dc_link *link); uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw); enum dp_link_encoding dc_link_dp_mst_decide_link_encoding_format(const struct dc_link *link); void dc_link_get_cur_link_res(const struct dc_link *link, struct link_resource *link_res); /* take a snapshot of current link resource allocation state */ void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map); /* restore link resource allocation state from a snapshot */ void dc_restore_link_res_map(const struct dc *dc, uint32_t *map); void dc_link_clear_dprx_states(struct dc_link *link); struct gpio *get_hpd_gpio(struct dc_bios *dcb, struct graphics_object_id link_id, struct gpio_service *gpio_service); void dp_trace_reset(struct dc_link *link); bool dc_dp_trace_is_initialized(struct dc_link *link); unsigned long long dc_dp_trace_get_lt_end_timestamp(struct dc_link *link, bool in_detection); void dc_dp_trace_set_is_logged_flag(struct dc_link *link, bool in_detection, bool is_logged); bool dc_dp_trace_is_logged(struct dc_link *link, bool in_detection); struct dp_trace_lt_counts *dc_dp_trace_get_lt_counts(struct dc_link *link, bool in_detection); unsigned int dc_dp_trace_get_link_loss_count(struct dc_link *link); /* Destruct the mst topology of the link and reset the allocated payload table */ bool reset_cur_dp_mst_topology(struct dc_link *link); #endif /* DC_LINK_H_ */