diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_factory.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_factory.c | 313 |
1 files changed, 245 insertions, 68 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_factory.c b/drivers/gpu/drm/amd/display/dc/link/link_factory.c index d9ce83f0bbef..995032a341b3 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_factory.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_factory.c @@ -28,6 +28,9 @@ */ #include "link_factory.h" #include "link_detection.h" +#include "link_resource.h" +#include "link_validation.h" +#include "link_dpms.h" #include "accessories/link_dp_cts.h" #include "accessories/link_dp_trace.h" #include "accessories/link_fpga.h" @@ -49,69 +52,248 @@ DC_LOG_HW_HOTPLUG( \ __VA_ARGS__) -static struct link_service link_srv = { - /* Detection */ - .add_remote_sink = link_add_remote_sink, - .remove_remote_sink = link_remove_remote_sink, - .get_hpd_state = link_get_hpd_state, - .enable_hpd = link_enable_hpd, - .disable_hpd = link_disable_hpd, - .enable_hpd_filter = link_enable_hpd_filter, - - /* DDC */ - .aux_transfer_raw = link_aux_transfer_raw, - - /* DP Capability */ - .dp_is_sink_present = dp_is_sink_present, - .dp_is_fec_supported = dp_is_fec_supported, - .dp_get_max_link_enc_cap = dp_get_max_link_enc_cap, - .dp_get_verified_link_cap = dp_get_verified_link_cap, - .dp_should_enable_fec = dp_should_enable_fec, - .mst_decide_link_encoding_format = mst_decide_link_encoding_format, - .edp_decide_link_settings = edp_decide_link_settings, - .bw_kbps_from_raw_frl_link_rate_data = link_bw_kbps_from_raw_frl_link_rate_data, - .dp_overwrite_extended_receiver_cap = dp_overwrite_extended_receiver_cap, - .dp_decide_lttpr_mode = dp_decide_lttpr_mode, - - /* DP DPIA/PHY */ - .dpia_handle_usb4_bandwidth_allocation_for_link = dpia_handle_usb4_bandwidth_allocation_for_link, - .dpia_handle_bw_alloc_response = dpia_handle_bw_alloc_response, - /* DP IRQ Handler */ - .dp_parse_link_loss_status = dp_parse_link_loss_status, - .dp_should_allow_hpd_rx_irq = dp_should_allow_hpd_rx_irq, - .dp_handle_link_loss = dp_handle_link_loss, - .dp_read_hpd_rx_irq_data = dp_read_hpd_rx_irq_data, - .dp_handle_hpd_rx_irq = dp_handle_hpd_rx_irq, - .dpcd_write_rx_power_ctrl = dpcd_write_rx_power_ctrl, - - /* eDP Panel Control */ - .edp_panel_backlight_power_on = edp_panel_backlight_power_on, - .edp_get_backlight_level = edp_get_backlight_level, - .edp_get_backlight_level_nits = edp_get_backlight_level_nits, - .edp_set_backlight_level = edp_set_backlight_level, - .edp_set_backlight_level_nits = edp_set_backlight_level_nits, - .edp_get_target_backlight_pwm = edp_get_target_backlight_pwm, - .edp_get_psr_state = edp_get_psr_state, - .edp_set_psr_allow_active = edp_set_psr_allow_active, - .edp_setup_psr = edp_setup_psr, - .edp_wait_for_t12 = edp_wait_for_t12, - - /* DP CTS */ - .dp_handle_automated_test = dp_handle_automated_test, - .dp_set_test_pattern = dp_set_test_pattern, - .dp_set_preferred_link_settings = dp_set_preferred_link_settings, - .dp_set_preferred_training_settings = dp_set_preferred_training_settings, - - /* DP Trace */ - .dp_trace_is_initialized = dp_trace_is_initialized, - .dp_trace_set_is_logged_flag = dp_trace_set_is_logged_flag, - .dp_trace_is_logged = dp_trace_is_logged, - .dp_trace_get_lt_end_timestamp = dp_trace_get_lt_end_timestamp, - .dp_trace_get_lt_counts = dp_trace_get_lt_counts, - .dp_trace_get_link_loss_count = dp_trace_get_link_loss_count, -}; - -static enum transmitter translate_encoder_to_transmitter(struct graphics_object_id encoder) +/* link factory owns the creation/destruction of link structures. */ +static void construct_link_service_factory(struct link_service *link_srv) +{ + + link_srv->create_link = link_create; + link_srv->destroy_link = link_destroy; +} + +/* link_detection manages link detection states and receiver states by using + * various link protocols. It also provides helper functions to interpret + * certain capabilities or status based on the states it manages or retrieve + * them directly from connected receivers. + */ +static void construct_link_service_detection(struct link_service *link_srv) +{ + link_srv->detect_link = link_detect; + link_srv->detect_connection_type = link_detect_connection_type; + link_srv->add_remote_sink = link_add_remote_sink; + link_srv->remove_remote_sink = link_remove_remote_sink; + link_srv->get_hpd_state = link_get_hpd_state; + link_srv->get_hpd_gpio = link_get_hpd_gpio; + link_srv->enable_hpd = link_enable_hpd; + link_srv->disable_hpd = link_disable_hpd; + link_srv->enable_hpd_filter = link_enable_hpd_filter; + link_srv->reset_cur_dp_mst_topology = link_reset_cur_dp_mst_topology; + link_srv->get_status = link_get_status; + link_srv->is_hdcp1x_supported = link_is_hdcp14; + link_srv->is_hdcp2x_supported = link_is_hdcp22; + link_srv->clear_dprx_states = link_clear_dprx_states; +} + +/* link resource implements accessors to link resource. */ +static void construct_link_service_resource(struct link_service *link_srv) +{ + link_srv->get_cur_res_map = link_get_cur_res_map; + link_srv->restore_res_map = link_restore_res_map; + link_srv->get_cur_link_res = link_get_cur_link_res; +} + +/* link validation owns timing validation against various link limitations. (ex. + * link bandwidth, receiver capability or our hardware capability) It also + * provides helper functions exposing bandwidth formulas used in validation. + */ +static void construct_link_service_validation(struct link_service *link_srv) +{ + link_srv->validate_mode_timing = link_validate_mode_timing; + link_srv->dp_link_bandwidth_kbps = dp_link_bandwidth_kbps; +} + +/* link dpms owns the programming sequence of stream's dpms state associated + * with the link and link's enable/disable sequences as result of the stream's + * dpms state change. + */ +static void construct_link_service_dpms(struct link_service *link_srv) +{ + link_srv->set_dpms_on = link_set_dpms_on; + link_srv->set_dpms_off = link_set_dpms_off; + link_srv->resume = link_resume; + link_srv->blank_all_dp_displays = link_blank_all_dp_displays; + link_srv->blank_all_edp_displays = link_blank_all_edp_displays; + link_srv->blank_dp_stream = link_blank_dp_stream; + link_srv->increase_mst_payload = link_increase_mst_payload; + link_srv->reduce_mst_payload = link_reduce_mst_payload; + link_srv->set_dsc_on_stream = link_set_dsc_on_stream; + link_srv->set_dsc_enable = link_set_dsc_enable; + link_srv->update_dsc_config = link_update_dsc_config; +} + +/* link ddc implements generic display communication protocols such as i2c, aux + * and scdc. It should not contain any specific applications of these + * protocols such as display capability query, detection, or handshaking such as + * link training. + */ +static void construct_link_service_ddc(struct link_service *link_srv) +{ + link_srv->create_ddc_service = link_create_ddc_service; + link_srv->destroy_ddc_service = link_destroy_ddc_service; + link_srv->query_ddc_data = link_query_ddc_data; + link_srv->aux_transfer_raw = link_aux_transfer_raw; + link_srv->aux_transfer_with_retries_no_mutex = + link_aux_transfer_with_retries_no_mutex; + link_srv->is_in_aux_transaction_mode = link_is_in_aux_transaction_mode; + link_srv->get_aux_defer_delay = link_get_aux_defer_delay; +} + +/* link dp capability implements dp specific link capability retrieval sequence. + * It is responsible for retrieving, parsing, overriding, deciding capability + * obtained from dp link. Link capability consists of encoders, DPRXs, cables, + * retimers, usb and all other possible backend capabilities. + */ +static void construct_link_service_dp_capability(struct link_service *link_srv) +{ + link_srv->dp_is_sink_present = dp_is_sink_present; + link_srv->dp_is_fec_supported = dp_is_fec_supported; + link_srv->dp_is_128b_132b_signal = dp_is_128b_132b_signal; + link_srv->dp_get_max_link_enc_cap = dp_get_max_link_enc_cap; + link_srv->dp_get_verified_link_cap = dp_get_verified_link_cap; + link_srv->dp_get_encoding_format = link_dp_get_encoding_format; + link_srv->dp_should_enable_fec = dp_should_enable_fec; + link_srv->dp_decide_link_settings = link_decide_link_settings; + link_srv->mst_decide_link_encoding_format = + mst_decide_link_encoding_format; + link_srv->edp_decide_link_settings = edp_decide_link_settings; + link_srv->bw_kbps_from_raw_frl_link_rate_data = + link_bw_kbps_from_raw_frl_link_rate_data; + link_srv->dp_overwrite_extended_receiver_cap = + dp_overwrite_extended_receiver_cap; + link_srv->dp_decide_lttpr_mode = dp_decide_lttpr_mode; +} + +/* link dp phy/dpia implements basic dp phy/dpia functionality such as + * enable/disable output and set lane/drive settings. It is responsible for + * maintaining and update software state representing current phy/dpia status + * such as current link settings. + */ +static void construct_link_service_dp_phy_or_dpia(struct link_service *link_srv) +{ + link_srv->dpia_handle_usb4_bandwidth_allocation_for_link = + dpia_handle_usb4_bandwidth_allocation_for_link; + link_srv->dpia_handle_bw_alloc_response = dpia_handle_bw_alloc_response; + link_srv->dp_set_drive_settings = dp_set_drive_settings; + link_srv->dpcd_write_rx_power_ctrl = dpcd_write_rx_power_ctrl; +} + +/* link dp irq handler implements DP HPD short pulse handling sequence according + * to DP specifications + */ +static void construct_link_service_dp_irq_handler(struct link_service *link_srv) +{ + link_srv->dp_parse_link_loss_status = dp_parse_link_loss_status; + link_srv->dp_should_allow_hpd_rx_irq = dp_should_allow_hpd_rx_irq; + link_srv->dp_handle_link_loss = dp_handle_link_loss; + link_srv->dp_read_hpd_rx_irq_data = dp_read_hpd_rx_irq_data; + link_srv->dp_handle_hpd_rx_irq = dp_handle_hpd_rx_irq; +} + +/* link edp panel control implements retrieval and configuration of eDP panel + * features such as PSR and ABM and it also manages specs defined eDP panel + * power sequences. + */ +static void construct_link_service_edp_panel_control(struct link_service *link_srv) +{ + link_srv->edp_panel_backlight_power_on = edp_panel_backlight_power_on; + link_srv->edp_get_backlight_level = edp_get_backlight_level; + link_srv->edp_get_backlight_level_nits = edp_get_backlight_level_nits; + link_srv->edp_set_backlight_level = edp_set_backlight_level; + link_srv->edp_set_backlight_level_nits = edp_set_backlight_level_nits; + link_srv->edp_get_target_backlight_pwm = edp_get_target_backlight_pwm; + link_srv->edp_get_psr_state = edp_get_psr_state; + link_srv->edp_set_psr_allow_active = edp_set_psr_allow_active; + link_srv->edp_setup_psr = edp_setup_psr; + link_srv->edp_set_sink_vtotal_in_psr_active = + edp_set_sink_vtotal_in_psr_active; + link_srv->edp_get_psr_residency = edp_get_psr_residency; + link_srv->edp_wait_for_t12 = edp_wait_for_t12; + link_srv->edp_is_ilr_optimization_required = + edp_is_ilr_optimization_required; + link_srv->edp_backlight_enable_aux = edp_backlight_enable_aux; + link_srv->edp_add_delay_for_T9 = edp_add_delay_for_T9; + link_srv->edp_receiver_ready_T9 = edp_receiver_ready_T9; + link_srv->edp_receiver_ready_T7 = edp_receiver_ready_T7; + link_srv->edp_power_alpm_dpcd_enable = edp_power_alpm_dpcd_enable; +} + +/* link dp cts implements dp compliance test automation protocols and manual + * testing interfaces for debugging and certification purpose. + */ +static void construct_link_service_dp_cts(struct link_service *link_srv) +{ + link_srv->dp_handle_automated_test = dp_handle_automated_test; + link_srv->dp_set_test_pattern = dp_set_test_pattern; + link_srv->dp_set_preferred_link_settings = + dp_set_preferred_link_settings; + link_srv->dp_set_preferred_training_settings = + dp_set_preferred_training_settings; +} + +/* link dp trace implements tracing interfaces for tracking major dp sequences + * including execution status and timestamps + */ +static void construct_link_service_dp_trace(struct link_service *link_srv) +{ + link_srv->dp_trace_is_initialized = dp_trace_is_initialized; + link_srv->dp_trace_set_is_logged_flag = dp_trace_set_is_logged_flag; + link_srv->dp_trace_is_logged = dp_trace_is_logged; + link_srv->dp_trace_get_lt_end_timestamp = dp_trace_get_lt_end_timestamp; + link_srv->dp_trace_get_lt_counts = dp_trace_get_lt_counts; + link_srv->dp_trace_get_link_loss_count = dp_trace_get_link_loss_count; + link_srv->dp_trace_set_edp_power_timestamp = + dp_trace_set_edp_power_timestamp; + link_srv->dp_trace_get_edp_poweron_timestamp = + dp_trace_get_edp_poweron_timestamp; + link_srv->dp_trace_get_edp_poweroff_timestamp = + dp_trace_get_edp_poweroff_timestamp; + link_srv->dp_trace_source_sequence = dp_trace_source_sequence; +} + +static void construct_link_service(struct link_service *link_srv) +{ + /* All link service functions should fall under some sub categories. + * If a new function doesn't perfectly fall under an existing sub + * category, it must be that you are either adding a whole new aspect of + * responsibility to link service or something doesn't belong to link + * service. In that case please contact the arch owner to arrange a + * design review meeting. + */ + construct_link_service_factory(link_srv); + construct_link_service_detection(link_srv); + construct_link_service_resource(link_srv); + construct_link_service_validation(link_srv); + construct_link_service_dpms(link_srv); + construct_link_service_ddc(link_srv); + construct_link_service_dp_capability(link_srv); + construct_link_service_dp_phy_or_dpia(link_srv); + construct_link_service_dp_irq_handler(link_srv); + construct_link_service_edp_panel_control(link_srv); + construct_link_service_dp_cts(link_srv); + construct_link_service_dp_trace(link_srv); +} + +struct link_service *link_create_link_service(void) +{ + struct link_service *link_srv = kzalloc(sizeof(*link_srv), GFP_KERNEL); + + if (link_srv == NULL) + goto fail; + + construct_link_service(link_srv); + + return link_srv; +fail: + return NULL; +} + +void link_destroy_link_service(struct link_service **link_srv) +{ + kfree(*link_srv); + *link_srv = NULL; +} + +static enum transmitter translate_encoder_to_transmitter( + struct graphics_object_id encoder) { switch (encoder.id) { case ENCODER_ID_INTERNAL_UNIPHY: @@ -646,8 +828,3 @@ void link_destroy(struct dc_link **link) kfree(*link); *link = NULL; } - -const struct link_service *link_get_link_service(void) -{ - return &link_srv; -} |