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/*
* Copyright 2022 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__
/* FILE POLICY AND INTENDED USAGE:
*
* This header defines link component function interfaces aka link_service.
* link_service provides the only entry point to link functions with function
* pointer style. This header is strictly private in dc and should never be
* included by DM because it exposes too much dc detail including all dc
* private types defined in core_types.h. Otherwise it will break DM - DC
* encapsulation and turn DM into a maintenance nightmare.
*
* The following shows a link component relation map.
*
* DM to DC:
* DM includes dc.h
* dc_link_exports.c or other dc files implement dc.h
*
* DC to Link:
* dc_link_exports.c or other dc files include link.h
* link_factory.c implements link.h
*
* Link sub-component to Link sub-component:
* link_factory.c includes --> link_xxx.h
* link_xxx.c implements link_xxx.h
* As you can see if you ever need to add a new dc link function and call it on
* DM/dc side, it is very difficult because you will need layers of translation.
* The most appropriate approach to implement new requirements on DM/dc side is
* to extend or generalize the functionality of existing link function
* interfaces so minimal modification is needed outside link component to
* achieve your new requirements. This approach reduces or even eliminates the
* effort needed outside link component to support a new link feature. This also
* reduces code discrepancy among DMs to support the same link feature. If we
* test full code path on one version of DM, and there is no feature specific
* modification required on other DMs, then we can have higher confidence that
* the feature will run on other DMs and produce the same result. The following
* are some good examples to start with:
*
* - detect_link --> to add new link detection or capability retrieval routines
*
* - validate_mode_timing --> to add new timing validation conditions
*
* - set_dpms_on/set_dpms_off --> to include new link enablement sequences
*
* If you must add new link functions, you will need to:
* 1. declare the function pointer here under the suitable commented category.
* 2. Implement your function in the suitable link_xxx.c file.
* 3. Assign the function to link_service in link_factory.c
* 4. NEVER include link_xxx.h headers outside link component.
* 5. NEVER include link.h on DM side.
*/
#include "core_types.h"
struct link_service *link_create_link_service(void);
void link_destroy_link_service(struct link_service **link_srv);
struct link_init_data {
const struct dc *dc;
struct dc_context *ctx; /* TODO: remove 'dal' when DC is complete. */
uint32_t connector_index; /* this will be mapped to the HPD pins */
uint32_t link_index; /* this is mapped to DAL display_index
TODO: remove it when DC is complete. */
bool is_dpia_link;
};
struct ddc_service_init_data {
struct graphics_object_id id;
struct dc_context *ctx;
struct dc_link *link;
bool is_dpia_link;
};
struct link_service {
/************************** Factory ***********************************/
struct dc_link *(*create_link)(
const struct link_init_data *init_params);
void (*destroy_link)(struct dc_link **link);
/************************** Detection *********************************/
bool (*detect_link)(struct dc_link *link, enum dc_detect_reason reason);
bool (*detect_connection_type)(struct dc_link *link,
enum dc_connection_type *type);
struct dc_sink *(*add_remote_sink)(
struct dc_link *link,
const uint8_t *edid,
int len,
struct dc_sink_init_data *init_data);
void (*remove_remote_sink)(struct dc_link *link, struct dc_sink *sink);
bool (*get_hpd_state)(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 (*enable_hpd)(const struct dc_link *link);
void (*disable_hpd)(const struct dc_link *link);
void (*enable_hpd_filter)(struct dc_link *link, bool enable);
bool (*reset_cur_dp_mst_topology)(struct dc_link *link);
const struct dc_link_status *(*get_status)(const struct dc_link *link);
bool (*is_hdcp1x_supported)(struct dc_link *link,
enum signal_type signal);
bool (*is_hdcp2x_supported)(struct dc_link *link,
enum signal_type signal);
void (*clear_dprx_states)(struct dc_link *link);
/*************************** Resource *********************************/
void (*get_cur_res_map)(const struct dc *dc, uint32_t *map);
void (*restore_res_map)(const struct dc *dc, uint32_t *map);
void (*get_cur_link_res)(const struct dc_link *link,
struct link_resource *link_res);
/*************************** Validation *******************************/
enum dc_status (*validate_mode_timing)(
const struct dc_stream_state *stream,
struct dc_link *link,
const struct dc_crtc_timing *timing);
uint32_t (*dp_link_bandwidth_kbps)(
const struct dc_link *link,
const struct dc_link_settings *link_settings);
bool (*validate_dpia_bandwidth)(
const struct dc_stream_state *stream,
const unsigned int num_streams);
/*************************** DPMS *************************************/
void (*set_dpms_on)(struct dc_state *state, struct pipe_ctx *pipe_ctx);
void (*set_dpms_off)(struct pipe_ctx *pipe_ctx);
void (*resume)(struct dc_link *link);
void (*blank_all_dp_displays)(struct dc *dc);
void (*blank_all_edp_displays)(struct dc *dc);
void (*blank_dp_stream)(struct dc_link *link, bool hw_init);
enum dc_status (*increase_mst_payload)(
struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
enum dc_status (*reduce_mst_payload)(
struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
void (*set_dsc_on_stream)(struct pipe_ctx *pipe_ctx, bool enable);
bool (*set_dsc_enable)(struct pipe_ctx *pipe_ctx, bool enable);
bool (*update_dsc_config)(struct pipe_ctx *pipe_ctx);
/*************************** DDC **************************************/
struct ddc_service *(*create_ddc_service)(
struct ddc_service_init_data *ddc_init_data);
void (*destroy_ddc_service)(struct ddc_service **ddc);
bool (*query_ddc_data)(
struct ddc_service *ddc,
uint32_t address,
uint8_t *write_buf,
uint32_t write_size,
uint8_t *read_buf,
uint32_t read_size);
int (*aux_transfer_raw)(struct ddc_service *ddc,
struct aux_payload *payload,
enum aux_return_code_type *operation_result);
bool (*configure_fixed_vs_pe_retimer)(
struct ddc_service *ddc,
const uint8_t *data,
uint32_t len);
bool (*aux_transfer_with_retries_no_mutex)(struct ddc_service *ddc,
struct aux_payload *payload);
bool (*is_in_aux_transaction_mode)(struct ddc_service *ddc);
uint32_t (*get_aux_defer_delay)(struct ddc_service *ddc);
/*************************** DP Capability ****************************/
bool (*dp_is_sink_present)(struct dc_link *link);
bool (*dp_is_fec_supported)(const struct dc_link *link);
bool (*dp_is_128b_132b_signal)(struct pipe_ctx *pipe_ctx);
bool (*dp_get_max_link_enc_cap)(const struct dc_link *link,
struct dc_link_settings *max_link_enc_cap);
const struct dc_link_settings *(*dp_get_verified_link_cap)(
const struct dc_link *link);
enum dp_link_encoding (*dp_get_encoding_format)(
const struct dc_link_settings *link_settings);
bool (*dp_should_enable_fec)(const struct dc_link *link);
bool (*dp_decide_link_settings)(
struct dc_stream_state *stream,
struct dc_link_settings *link_setting);
enum dp_link_encoding (*mst_decide_link_encoding_format)(
const struct dc_link *link);
bool (*edp_decide_link_settings)(struct dc_link *link,
struct dc_link_settings *link_setting, uint32_t req_bw);
uint32_t (*bw_kbps_from_raw_frl_link_rate_data)(uint8_t bw);
bool (*dp_overwrite_extended_receiver_cap)(struct dc_link *link);
enum lttpr_mode (*dp_decide_lttpr_mode)(struct dc_link *link,
struct dc_link_settings *link_setting);
/*************************** DP DPIA/PHY ******************************/
int (*dpia_handle_usb4_bandwidth_allocation_for_link)(
struct dc_link *link, int peak_bw);
void (*dpia_handle_bw_alloc_response)(
struct dc_link *link, uint8_t bw, uint8_t result);
void (*dp_set_drive_settings)(
struct dc_link *link,
const struct link_resource *link_res,
struct link_training_settings *lt_settings);
void (*dpcd_write_rx_power_ctrl)(struct dc_link *link, bool on);
/*************************** DP IRQ Handler ***************************/
bool (*dp_parse_link_loss_status)(
struct dc_link *link,
union hpd_irq_data *hpd_irq_dpcd_data);
bool (*dp_should_allow_hpd_rx_irq)(const struct dc_link *link);
void (*dp_handle_link_loss)(struct dc_link *link);
enum dc_status (*dp_read_hpd_rx_irq_data)(
struct dc_link *link,
union hpd_irq_data *irq_data);
bool (*dp_handle_hpd_rx_irq)(struct dc_link *link,
union hpd_irq_data *out_hpd_irq_dpcd_data,
bool *out_link_loss,
bool defer_handling, bool *has_left_work);
/*************************** eDP Panel Control ************************/
void (*edp_panel_backlight_power_on)(
struct dc_link *link, bool wait_for_hpd);
int (*edp_get_backlight_level)(const struct dc_link *link);
bool (*edp_get_backlight_level_nits)(struct dc_link *link,
uint32_t *backlight_millinits_avg,
uint32_t *backlight_millinits_peak);
bool (*edp_set_backlight_level)(const struct dc_link *link,
uint32_t backlight_pwm_u16_16,
uint32_t frame_ramp);
bool (*edp_set_backlight_level_nits)(struct dc_link *link,
bool isHDR,
uint32_t backlight_millinits,
uint32_t transition_time_in_ms);
int (*edp_get_target_backlight_pwm)(const struct dc_link *link);
bool (*edp_get_psr_state)(
const struct dc_link *link, enum dc_psr_state *state);
bool (*edp_set_psr_allow_active)(
struct dc_link *link,
const bool *allow_active,
bool wait,
bool force_static,
const unsigned int *power_opts);
bool (*edp_setup_psr)(struct dc_link *link,
const struct dc_stream_state *stream,
struct psr_config *psr_config,
struct psr_context *psr_context);
bool (*edp_set_sink_vtotal_in_psr_active)(
const struct dc_link *link,
uint16_t psr_vtotal_idle,
uint16_t psr_vtotal_su);
void (*edp_get_psr_residency)(
const struct dc_link *link, uint32_t *residency, enum psr_residency_mode mode);
bool (*edp_get_replay_state)(
const struct dc_link *link, uint64_t *state);
bool (*edp_set_replay_allow_active)(struct dc_link *dc_link,
const bool *enable, bool wait, bool force_static,
const unsigned int *power_opts);
bool (*edp_setup_replay)(struct dc_link *link,
const struct dc_stream_state *stream);
bool (*edp_send_replay_cmd)(struct dc_link *link,
enum replay_FW_Message_type msg,
union dmub_replay_cmd_set *cmd_data);
bool (*edp_set_coasting_vtotal)(
struct dc_link *link, uint32_t coasting_vtotal);
bool (*edp_replay_residency)(const struct dc_link *link,
unsigned int *residency, const bool is_start,
const enum pr_residency_mode mode);
bool (*edp_set_replay_power_opt_and_coasting_vtotal)(struct dc_link *link,
const unsigned int *power_opts, uint32_t coasting_vtotal);
bool (*edp_wait_for_t12)(struct dc_link *link);
bool (*edp_is_ilr_optimization_required)(struct dc_link *link,
struct dc_crtc_timing *crtc_timing);
bool (*edp_backlight_enable_aux)(struct dc_link *link, bool enable);
void (*edp_add_delay_for_T9)(struct dc_link *link);
bool (*edp_receiver_ready_T9)(struct dc_link *link);
bool (*edp_receiver_ready_T7)(struct dc_link *link);
bool (*edp_power_alpm_dpcd_enable)(struct dc_link *link, bool enable);
void (*edp_set_panel_power)(struct dc_link *link, bool powerOn);
/*************************** DP CTS ************************************/
void (*dp_handle_automated_test)(struct dc_link *link);
bool (*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);
void (*dp_set_preferred_link_settings)(struct dc *dc,
struct dc_link_settings *link_setting,
struct dc_link *link);
void (*dp_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);
/*************************** DP Trace *********************************/
bool (*dp_trace_is_initialized)(struct dc_link *link);
void (*dp_trace_set_is_logged_flag)(struct dc_link *link,
bool in_detection,
bool is_logged);
bool (*dp_trace_is_logged)(struct dc_link *link, bool in_detection);
unsigned long long (*dp_trace_get_lt_end_timestamp)(
struct dc_link *link, bool in_detection);
const struct dp_trace_lt_counts *(*dp_trace_get_lt_counts)(
struct dc_link *link, bool in_detection);
unsigned int (*dp_trace_get_link_loss_count)(struct dc_link *link);
void (*dp_trace_set_edp_power_timestamp)(struct dc_link *link,
bool power_up);
uint64_t (*dp_trace_get_edp_poweron_timestamp)(struct dc_link *link);
uint64_t (*dp_trace_get_edp_poweroff_timestamp)(struct dc_link *link);
void (*dp_trace_source_sequence)(
struct dc_link *link, uint8_t dp_test_mode);
};
#endif /* __DC_LINK_HPD_H__ */
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