| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Harry Wentland | 5344 | 43.32% | 18 | 11.76% |
| Zeyu Fan | 1989 | 16.12% | 2 | 1.31% |
| Charlene Liu | 668 | 5.42% | 8 | 5.23% |
| Anthony Koo | 547 | 4.43% | 12 | 7.84% |
| Samson Tam | 524 | 4.25% | 4 | 2.61% |
| Chris Park | 483 | 3.92% | 2 | 1.31% |
| Eric Yang | 464 | 3.76% | 8 | 5.23% |
| Wenjing Liu | 200 | 1.62% | 6 | 3.92% |
| Alex Deucher | 199 | 1.61% | 3 | 1.96% |
| Hersen Wu | 190 | 1.54% | 6 | 3.92% |
| David Galiffi | 181 | 1.47% | 2 | 1.31% |
| Andrew Jiang | 152 | 1.23% | 4 | 2.61% |
| Martin Leung | 142 | 1.15% | 2 | 1.31% |
| John Barberiz | 140 | 1.13% | 3 | 1.96% |
| Nikola Cornij | 134 | 1.09% | 6 | 3.92% |
| Chiawen Huang | 109 | 0.88% | 2 | 1.31% |
| Yongqiang Sun | 103 | 0.84% | 4 | 2.61% |
| Bhawanpreet Lakha | 101 | 0.82% | 7 | 4.58% |
| David Francis | 88 | 0.71% | 5 | 3.27% |
| Roman Li | 66 | 0.54% | 2 | 1.31% |
| Paul Hsieh | 57 | 0.46% | 2 | 1.31% |
| Martin Tsai | 56 | 0.45% | 4 | 2.61% |
| Dmytro Laktyushkin | 50 | 0.41% | 6 | 3.92% |
| Andrey Grodzovsky | 48 | 0.39% | 3 | 1.96% |
| Derek Lai | 44 | 0.36% | 1 | 0.65% |
| Ken Chalmers | 39 | 0.32% | 2 | 1.31% |
| abdoulaye berthe | 30 | 0.24% | 1 | 0.65% |
| Amy Zhang | 25 | 0.20% | 1 | 0.65% |
| Zi Yu Liao | 24 | 0.19% | 1 | 0.65% |
| Dale Zhao | 21 | 0.17% | 1 | 0.65% |
| Jerry (Fangzhi) Zuo | 20 | 0.16% | 3 | 1.96% |
| Joshua Aberback | 19 | 0.15% | 2 | 1.31% |
| Eric Bernstein | 15 | 0.12% | 4 | 2.61% |
| SivapiriyanKumarasamy | 14 | 0.11% | 2 | 1.31% |
| Arnd Bergmann | 12 | 0.10% | 1 | 0.65% |
| Nathan Chancellor | 8 | 0.06% | 1 | 0.65% |
| Ding Wang | 8 | 0.06% | 1 | 0.65% |
| Jun Lei | 5 | 0.04% | 1 | 0.65% |
| Sam Ravnborg | 3 | 0.02% | 1 | 0.65% |
| Dave Airlie | 3 | 0.02% | 2 | 1.31% |
| Shaokun Zhang | 2 | 0.02% | 1 | 0.65% |
| Nicholas Kazlauskas | 2 | 0.02% | 1 | 0.65% |
| Sylvia Tsai | 2 | 0.02% | 1 | 0.65% |
| Jordan Lazare | 1 | 0.01% | 1 | 0.65% |
| Mathias Fröhlich | 1 | 0.01% | 1 | 0.65% |
| Yasir Al Shekerchi | 1 | 0.01% | 1 | 0.65% |
| Leo (Sunpeng) Li | 1 | 0.01% | 1 | 0.65% |
| Total | 12335 | 153 |
/* * Copyright 2012-15 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 * */ #include <linux/slab.h> #include "dm_services.h" #include "atom.h" #include "dm_helpers.h" #include "dc.h" #include "grph_object_id.h" #include "gpio_service_interface.h" #include "core_status.h" #include "dc_link_dp.h" #include "dc_link_ddc.h" #include "link_hwss.h" #include "opp.h" #include "link_encoder.h" #include "hw_sequencer.h" #include "resource.h" #include "abm.h" #include "fixed31_32.h" #include "dpcd_defs.h" #include "dmcu.h" #include "hw/clk_mgr.h" #define DC_LOGGER_INIT(logger) #define LINK_INFO(...) \ DC_LOG_HW_HOTPLUG( \ __VA_ARGS__) #define RETIMER_REDRIVER_INFO(...) \ DC_LOG_RETIMER_REDRIVER( \ __VA_ARGS__) /******************************************************************************* * Private structures ******************************************************************************/ enum { PEAK_FACTOR_X1000 = 1006, /* * Some receivers fail to train on first try and are good * on subsequent tries. 2 retries should be plenty. If we * don't have a successful training then we don't expect to * ever get one. */ LINK_TRAINING_MAX_VERIFY_RETRY = 2 }; /******************************************************************************* * Private functions ******************************************************************************/ static void destruct(struct dc_link *link) { int i; if (link->hpd_gpio != NULL) { dal_gpio_close(link->hpd_gpio); dal_gpio_destroy_irq(&link->hpd_gpio); link->hpd_gpio = NULL; } if (link->ddc) dal_ddc_service_destroy(&link->ddc); if(link->link_enc) link->link_enc->funcs->destroy(&link->link_enc); if (link->local_sink) dc_sink_release(link->local_sink); for (i = 0; i < link->sink_count; ++i) dc_sink_release(link->remote_sinks[i]); } struct gpio *get_hpd_gpio(struct dc_bios *dcb, struct graphics_object_id link_id, struct gpio_service *gpio_service) { enum bp_result bp_result; struct graphics_object_hpd_info hpd_info; struct gpio_pin_info pin_info; if (dcb->funcs->get_hpd_info(dcb, link_id, &hpd_info) != BP_RESULT_OK) return NULL; bp_result = dcb->funcs->get_gpio_pin_info(dcb, hpd_info.hpd_int_gpio_uid, &pin_info); if (bp_result != BP_RESULT_OK) { ASSERT(bp_result == BP_RESULT_NORECORD); return NULL; } return dal_gpio_service_create_irq( gpio_service, pin_info.offset, pin_info.mask); } /* * Function: program_hpd_filter * * @brief * Programs HPD filter on associated HPD line * * @param [in] delay_on_connect_in_ms: Connect filter timeout * @param [in] delay_on_disconnect_in_ms: Disconnect filter timeout * * @return * true on success, false otherwise */ static bool program_hpd_filter( const struct dc_link *link) { bool result = false; struct gpio *hpd; int delay_on_connect_in_ms = 0; int delay_on_disconnect_in_ms = 0; if (link->is_hpd_filter_disabled) return false; /* Verify feature is supported */ switch (link->connector_signal) { case SIGNAL_TYPE_DVI_SINGLE_LINK: case SIGNAL_TYPE_DVI_DUAL_LINK: case SIGNAL_TYPE_HDMI_TYPE_A: /* Program hpd filter */ delay_on_connect_in_ms = 500; delay_on_disconnect_in_ms = 100; break; case SIGNAL_TYPE_DISPLAY_PORT: case SIGNAL_TYPE_DISPLAY_PORT_MST: /* Program hpd filter to allow DP signal to settle */ /* 500: not able to detect MST <-> SST switch as HPD is low for * only 100ms on DELL U2413 * 0: some passive dongle still show aux mode instead of i2c * 20-50:not enough to hide bouncing HPD with passive dongle. * also see intermittent i2c read issues. */ delay_on_connect_in_ms = 80; delay_on_disconnect_in_ms = 0; break; case SIGNAL_TYPE_LVDS: case SIGNAL_TYPE_EDP: default: /* Don't program hpd filter */ return false; } /* Obtain HPD handle */ hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); if (!hpd) return result; /* Setup HPD filtering */ if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) { struct gpio_hpd_config config; config.delay_on_connect = delay_on_connect_in_ms; config.delay_on_disconnect = delay_on_disconnect_in_ms; dal_irq_setup_hpd_filter(hpd, &config); dal_gpio_close(hpd); result = true; } else { ASSERT_CRITICAL(false); } /* Release HPD handle */ dal_gpio_destroy_irq(&hpd); return result; } /** * dc_link_detect_sink() - Determine if there is a sink connected * * @type: Returned connection type * Does not detect downstream devices, such as MST sinks * or display connected through active dongles */ bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type) { uint32_t is_hpd_high = 0; struct gpio *hpd_pin; if (link->connector_signal == SIGNAL_TYPE_LVDS) { *type = dc_connection_single; return true; } if (link->connector_signal == SIGNAL_TYPE_EDP) { /*in case it is not on*/ link->dc->hwss.edp_power_control(link, true); link->dc->hwss.edp_wait_for_hpd_ready(link, true); } /* todo: may need to lock gpio access */ hpd_pin = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); if (hpd_pin == NULL) goto hpd_gpio_failure; dal_gpio_open(hpd_pin, GPIO_MODE_INTERRUPT); dal_gpio_get_value(hpd_pin, &is_hpd_high); dal_gpio_close(hpd_pin); dal_gpio_destroy_irq(&hpd_pin); if (is_hpd_high) { *type = dc_connection_single; /* TODO: need to do the actual detection */ } else { *type = dc_connection_none; } return true; hpd_gpio_failure: return false; } static enum ddc_transaction_type get_ddc_transaction_type( enum signal_type sink_signal) { enum ddc_transaction_type transaction_type = DDC_TRANSACTION_TYPE_NONE; switch (sink_signal) { case SIGNAL_TYPE_DVI_SINGLE_LINK: case SIGNAL_TYPE_DVI_DUAL_LINK: case SIGNAL_TYPE_HDMI_TYPE_A: case SIGNAL_TYPE_LVDS: case SIGNAL_TYPE_RGB: transaction_type = DDC_TRANSACTION_TYPE_I2C; break; case SIGNAL_TYPE_DISPLAY_PORT: case SIGNAL_TYPE_EDP: transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX; break; case SIGNAL_TYPE_DISPLAY_PORT_MST: /* MST does not use I2COverAux, but there is the * SPECIAL use case for "immediate dwnstrm device * access" (EPR#370830). */ transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX; break; default: break; } return transaction_type; } static enum signal_type get_basic_signal_type( struct graphics_object_id encoder, struct graphics_object_id downstream) { if (downstream.type == OBJECT_TYPE_CONNECTOR) { switch (downstream.id) { case CONNECTOR_ID_SINGLE_LINK_DVII: switch (encoder.id) { case ENCODER_ID_INTERNAL_DAC1: case ENCODER_ID_INTERNAL_KLDSCP_DAC1: case ENCODER_ID_INTERNAL_DAC2: case ENCODER_ID_INTERNAL_KLDSCP_DAC2: return SIGNAL_TYPE_RGB; default: return SIGNAL_TYPE_DVI_SINGLE_LINK; } break; case CONNECTOR_ID_DUAL_LINK_DVII: { switch (encoder.id) { case ENCODER_ID_INTERNAL_DAC1: case ENCODER_ID_INTERNAL_KLDSCP_DAC1: case ENCODER_ID_INTERNAL_DAC2: case ENCODER_ID_INTERNAL_KLDSCP_DAC2: return SIGNAL_TYPE_RGB; default: return SIGNAL_TYPE_DVI_DUAL_LINK; } } break; case CONNECTOR_ID_SINGLE_LINK_DVID: return SIGNAL_TYPE_DVI_SINGLE_LINK; case CONNECTOR_ID_DUAL_LINK_DVID: return SIGNAL_TYPE_DVI_DUAL_LINK; case CONNECTOR_ID_VGA: return SIGNAL_TYPE_RGB; case CONNECTOR_ID_HDMI_TYPE_A: return SIGNAL_TYPE_HDMI_TYPE_A; case CONNECTOR_ID_LVDS: return SIGNAL_TYPE_LVDS; case CONNECTOR_ID_DISPLAY_PORT: return SIGNAL_TYPE_DISPLAY_PORT; case CONNECTOR_ID_EDP: return SIGNAL_TYPE_EDP; default: return SIGNAL_TYPE_NONE; } } else if (downstream.type == OBJECT_TYPE_ENCODER) { switch (downstream.id) { case ENCODER_ID_EXTERNAL_NUTMEG: case ENCODER_ID_EXTERNAL_TRAVIS: return SIGNAL_TYPE_DISPLAY_PORT; default: return SIGNAL_TYPE_NONE; } } return SIGNAL_TYPE_NONE; } /** * dc_link_is_dp_sink_present() - Check if there is a native DP * or passive DP-HDMI dongle connected */ bool dc_link_is_dp_sink_present(struct dc_link *link) { enum gpio_result gpio_result; uint32_t clock_pin = 0; uint8_t retry = 0; struct ddc *ddc; enum connector_id connector_id = dal_graphics_object_id_get_connector_id(link->link_id); bool present = ((connector_id == CONNECTOR_ID_DISPLAY_PORT) || (connector_id == CONNECTOR_ID_EDP)); ddc = dal_ddc_service_get_ddc_pin(link->ddc); if (!ddc) { BREAK_TO_DEBUGGER(); return present; } /* Open GPIO and set it to I2C mode */ /* Note: this GpioMode_Input will be converted * to GpioConfigType_I2cAuxDualMode in GPIO component, * which indicates we need additional delay */ if (GPIO_RESULT_OK != dal_ddc_open( ddc, GPIO_MODE_INPUT, GPIO_DDC_CONFIG_TYPE_MODE_I2C)) { dal_gpio_destroy_ddc(&ddc); return present; } /* * Read GPIO: DP sink is present if both clock and data pins are zero * * [W/A] plug-unplug DP cable, sometimes customer board has * one short pulse on clk_pin(1V, < 1ms). DP will be config to HDMI/DVI * then monitor can't br light up. Add retry 3 times * But in real passive dongle, it need additional 3ms to detect */ do { gpio_result = dal_gpio_get_value(ddc->pin_clock, &clock_pin); ASSERT(gpio_result == GPIO_RESULT_OK); if (clock_pin) udelay(1000); else break; } while (retry++ < 3); present = (gpio_result == GPIO_RESULT_OK) && !clock_pin; dal_ddc_close(ddc); return present; } /* * @brief * Detect output sink type */ static enum signal_type link_detect_sink( struct dc_link *link, enum dc_detect_reason reason) { enum signal_type result = get_basic_signal_type( link->link_enc->id, link->link_id); /* Internal digital encoder will detect only dongles * that require digital signal */ /* Detection mechanism is different * for different native connectors. * LVDS connector supports only LVDS signal; * PCIE is a bus slot, the actual connector needs to be detected first; * eDP connector supports only eDP signal; * HDMI should check straps for audio */ /* PCIE detects the actual connector on add-on board */ if (link->link_id.id == CONNECTOR_ID_PCIE) { /* ZAZTODO implement PCIE add-on card detection */ } switch (link->link_id.id) { case CONNECTOR_ID_HDMI_TYPE_A: { /* check audio support: * if native HDMI is not supported, switch to DVI */ struct audio_support *aud_support = &link->dc->res_pool->audio_support; if (!aud_support->hdmi_audio_native) if (link->link_id.id == CONNECTOR_ID_HDMI_TYPE_A) result = SIGNAL_TYPE_DVI_SINGLE_LINK; } break; case CONNECTOR_ID_DISPLAY_PORT: { /* DP HPD short pulse. Passive DP dongle will not * have short pulse */ if (reason != DETECT_REASON_HPDRX) { /* Check whether DP signal detected: if not - * we assume signal is DVI; it could be corrected * to HDMI after dongle detection */ if (!dm_helpers_is_dp_sink_present(link)) result = SIGNAL_TYPE_DVI_SINGLE_LINK; } } break; default: break; } return result; } static enum signal_type decide_signal_from_strap_and_dongle_type( enum display_dongle_type dongle_type, struct audio_support *audio_support) { enum signal_type signal = SIGNAL_TYPE_NONE; switch (dongle_type) { case DISPLAY_DONGLE_DP_HDMI_DONGLE: if (audio_support->hdmi_audio_on_dongle) signal = SIGNAL_TYPE_HDMI_TYPE_A; else signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; case DISPLAY_DONGLE_DP_DVI_DONGLE: signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; case DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE: if (audio_support->hdmi_audio_native) signal = SIGNAL_TYPE_HDMI_TYPE_A; else signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; default: signal = SIGNAL_TYPE_NONE; break; } return signal; } static enum signal_type dp_passive_dongle_detection( struct ddc_service *ddc, struct display_sink_capability *sink_cap, struct audio_support *audio_support) { dal_ddc_service_i2c_query_dp_dual_mode_adaptor( ddc, sink_cap); return decide_signal_from_strap_and_dongle_type( sink_cap->dongle_type, audio_support); } static void link_disconnect_sink(struct dc_link *link) { if (link->local_sink) { dc_sink_release(link->local_sink); link->local_sink = NULL; } link->dpcd_sink_count = 0; } static void link_disconnect_remap(struct dc_sink *prev_sink, struct dc_link *link) { dc_sink_release(link->local_sink); link->local_sink = prev_sink; } static void read_edp_current_link_settings_on_detect(struct dc_link *link) { union lane_count_set lane_count_set = { {0} }; uint8_t link_bw_set; uint8_t link_rate_set; uint32_t read_dpcd_retry_cnt = 10; enum dc_status status = DC_ERROR_UNEXPECTED; int i; union max_down_spread max_down_spread = { {0} }; // Read DPCD 00101h to find out the number of lanes currently set for (i = 0; i < read_dpcd_retry_cnt; i++) { status = core_link_read_dpcd( link, DP_LANE_COUNT_SET, &lane_count_set.raw, sizeof(lane_count_set)); /* First DPCD read after VDD ON can fail if the particular board * does not have HPD pin wired correctly. So if DPCD read fails, * which it should never happen, retry a few times. Target worst * case scenario of 80 ms. */ if (status == DC_OK) { link->cur_link_settings.lane_count = lane_count_set.bits.LANE_COUNT_SET; break; } msleep(8); } // Read DPCD 00100h to find if standard link rates are set core_link_read_dpcd(link, DP_LINK_BW_SET, &link_bw_set, sizeof(link_bw_set)); if (link_bw_set == 0) { /* If standard link rates are not being used, * Read DPCD 00115h to find the link rate set used */ core_link_read_dpcd(link, DP_LINK_RATE_SET, &link_rate_set, sizeof(link_rate_set)); if (link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) { link->cur_link_settings.link_rate = link->dpcd_caps.edp_supported_link_rates[link_rate_set]; link->cur_link_settings.link_rate_set = link_rate_set; link->cur_link_settings.use_link_rate_set = true; } } else { link->cur_link_settings.link_rate = link_bw_set; link->cur_link_settings.use_link_rate_set = false; } // Read DPCD 00003h to find the max down spread. core_link_read_dpcd(link, DP_MAX_DOWNSPREAD, &max_down_spread.raw, sizeof(max_down_spread)); link->cur_link_settings.link_spread = max_down_spread.bits.MAX_DOWN_SPREAD ? LINK_SPREAD_05_DOWNSPREAD_30KHZ : LINK_SPREAD_DISABLED; } static bool detect_dp( struct dc_link *link, struct display_sink_capability *sink_caps, bool *converter_disable_audio, struct audio_support *audio_support, enum dc_detect_reason reason) { bool boot = false; sink_caps->signal = link_detect_sink(link, reason); sink_caps->transaction_type = get_ddc_transaction_type(sink_caps->signal); if (sink_caps->transaction_type == DDC_TRANSACTION_TYPE_I2C_OVER_AUX) { sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT; if (!detect_dp_sink_caps(link)) return false; if (is_mst_supported(link)) { sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT_MST; link->type = dc_connection_mst_branch; dal_ddc_service_set_transaction_type( link->ddc, sink_caps->transaction_type); /* * This call will initiate MST topology discovery. Which * will detect MST ports and add new DRM connector DRM * framework. Then read EDID via remote i2c over aux. In * the end, will notify DRM detect result and save EDID * into DRM framework. * * .detect is called by .fill_modes. * .fill_modes is called by user mode ioctl * DRM_IOCTL_MODE_GETCONNECTOR. * * .get_modes is called by .fill_modes. * * call .get_modes, AMDGPU DM implementation will create * new dc_sink and add to dc_link. For long HPD plug * in/out, MST has its own handle. * * Therefore, just after dc_create, link->sink is not * created for MST until user mode app calls * DRM_IOCTL_MODE_GETCONNECTOR. * * Need check ->sink usages in case ->sink = NULL * TODO: s3 resume check */ if (reason == DETECT_REASON_BOOT) boot = true; dm_helpers_dp_update_branch_info( link->ctx, link); if (!dm_helpers_dp_mst_start_top_mgr( link->ctx, link, boot)) { /* MST not supported */ link->type = dc_connection_single; sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT; } } if (link->type != dc_connection_mst_branch && is_dp_active_dongle(link)) { /* DP active dongles */ link->type = dc_connection_active_dongle; if (!link->dpcd_caps.sink_count.bits.SINK_COUNT) { /* * active dongle unplug processing for short irq */ link_disconnect_sink(link); return true; } if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_DP_HDMI_CONVERTER) *converter_disable_audio = true; } } else { /* DP passive dongles */ sink_caps->signal = dp_passive_dongle_detection(link->ddc, sink_caps, audio_support); } return true; } static bool is_same_edid(struct dc_edid *old_edid, struct dc_edid *new_edid) { if (old_edid->length != new_edid->length) return false; if (new_edid->length == 0) return false; return (memcmp(old_edid->raw_edid, new_edid->raw_edid, new_edid->length) == 0); } bool wait_for_alt_mode(struct dc_link *link) { /** * something is terribly wrong if time out is > 200ms. (5Hz) * 500 microseconds * 400 tries us 200 ms **/ unsigned int sleep_time_in_microseconds = 500; unsigned int tries_allowed = 400; bool is_in_alt_mode; unsigned long long enter_timestamp; unsigned long long finish_timestamp; unsigned long long time_taken_in_ns; int tries_taken; DC_LOGGER_INIT(link->ctx->logger); if (link->link_enc->funcs->is_in_alt_mode == NULL) return true; is_in_alt_mode = link->link_enc->funcs->is_in_alt_mode(link->link_enc); DC_LOG_WARNING("DP Alt mode state on HPD: %d\n", is_in_alt_mode); if (is_in_alt_mode) return true; enter_timestamp = dm_get_timestamp(link->ctx); for (tries_taken = 0; tries_taken < tries_allowed; tries_taken++) { udelay(sleep_time_in_microseconds); /* ask the link if alt mode is enabled, if so return ok */ if (link->link_enc->funcs->is_in_alt_mode(link->link_enc)) { finish_timestamp = dm_get_timestamp(link->ctx); time_taken_in_ns = dm_get_elapse_time_in_ns( link->ctx, finish_timestamp, enter_timestamp); DC_LOG_WARNING("Alt mode entered finished after %llu ms\n", div_u64(time_taken_in_ns, 1000000)); return true; } } finish_timestamp = dm_get_timestamp(link->ctx); time_taken_in_ns = dm_get_elapse_time_in_ns(link->ctx, finish_timestamp, enter_timestamp); DC_LOG_WARNING("Alt mode has timed out after %llu ms\n", div_u64(time_taken_in_ns, 1000000)); return false; } /** * dc_link_detect() - Detect if a sink is attached to a given link * * link->local_sink is created or destroyed as needed. * * This does not create remote sinks but will trigger DM * to start MST detection if a branch is detected. */ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) { struct dc_sink_init_data sink_init_data = { 0 }; struct display_sink_capability sink_caps = { 0 }; uint8_t i; bool converter_disable_audio = false; struct audio_support *aud_support = &link->dc->res_pool->audio_support; bool same_edid = false; enum dc_edid_status edid_status; struct dc_context *dc_ctx = link->ctx; struct dc_sink *sink = NULL; struct dc_sink *prev_sink = NULL; struct dpcd_caps prev_dpcd_caps; bool same_dpcd = true; enum dc_connection_type new_connection_type = dc_connection_none; DC_LOGGER_INIT(link->ctx->logger); if (dc_is_virtual_signal(link->connector_signal)) return false; if ((link->connector_signal == SIGNAL_TYPE_LVDS || link->connector_signal == SIGNAL_TYPE_EDP) && link->local_sink) return true; if (false == dc_link_detect_sink(link, &new_connection_type)) { BREAK_TO_DEBUGGER(); return false; } prev_sink = link->local_sink; if (prev_sink != NULL) { dc_sink_retain(prev_sink); memcpy(&prev_dpcd_caps, &link->dpcd_caps, sizeof(struct dpcd_caps)); } link_disconnect_sink(link); if (new_connection_type != dc_connection_none) { link->type = new_connection_type; link->link_state_valid = false; /* From Disconnected-to-Connected. */ switch (link->connector_signal) { case SIGNAL_TYPE_HDMI_TYPE_A: { sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C; if (aud_support->hdmi_audio_native) sink_caps.signal = SIGNAL_TYPE_HDMI_TYPE_A; else sink_caps.signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; } case SIGNAL_TYPE_DVI_SINGLE_LINK: { sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C; sink_caps.signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; } case SIGNAL_TYPE_DVI_DUAL_LINK: { sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C; sink_caps.signal = SIGNAL_TYPE_DVI_DUAL_LINK; break; } case SIGNAL_TYPE_LVDS: { sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C; sink_caps.signal = SIGNAL_TYPE_LVDS; break; } case SIGNAL_TYPE_EDP: { read_edp_current_link_settings_on_detect(link); detect_edp_sink_caps(link); sink_caps.transaction_type = DDC_TRANSACTION_TYPE_I2C_OVER_AUX; sink_caps.signal = SIGNAL_TYPE_EDP; break; } case SIGNAL_TYPE_DISPLAY_PORT: { /* wa HPD high coming too early*/ if (link->link_enc->features.flags.bits.DP_IS_USB_C == 1) { /* if alt mode times out, return false */ if (wait_for_alt_mode(link) == false) { return false; } } if (!detect_dp( link, &sink_caps, &converter_disable_audio, aud_support, reason)) { if (prev_sink != NULL) dc_sink_release(prev_sink); return false; } // Check if dpcp block is the same if (prev_sink != NULL) { if (memcmp(&link->dpcd_caps, &prev_dpcd_caps, sizeof(struct dpcd_caps))) same_dpcd = false; } /* Active dongle plug in without display or downstream unplug*/ if (link->type == dc_connection_active_dongle && link->dpcd_caps.sink_count.bits.SINK_COUNT == 0) { if (prev_sink != NULL) { /* Downstream unplug */ dc_sink_release(prev_sink); } else { /* Empty dongle plug in */ dp_verify_link_cap_with_retries(link, &link->reported_link_cap, LINK_TRAINING_MAX_VERIFY_RETRY); } return true; } if (link->type == dc_connection_mst_branch) { LINK_INFO("link=%d, mst branch is now Connected\n", link->link_index); /* Need to setup mst link_cap struct here * otherwise dc_link_detect() will leave mst link_cap * empty which leads to allocate_mst_payload() has "0" * pbn_per_slot value leading to exception on dc_fixpt_div() */ link->verified_link_cap = link->reported_link_cap; if (prev_sink != NULL) dc_sink_release(prev_sink); return false; } break; } default: DC_ERROR("Invalid connector type! signal:%d\n", link->connector_signal); if (prev_sink != NULL) dc_sink_release(prev_sink); return false; } /* switch() */ if (link->dpcd_caps.sink_count.bits.SINK_COUNT) link->dpcd_sink_count = link->dpcd_caps.sink_count. bits.SINK_COUNT; else link->dpcd_sink_count = 1; dal_ddc_service_set_transaction_type( link->ddc, sink_caps.transaction_type); link->aux_mode = dal_ddc_service_is_in_aux_transaction_mode( link->ddc); sink_init_data.link = link; sink_init_data.sink_signal = sink_caps.signal; sink = dc_sink_create(&sink_init_data); if (!sink) { DC_ERROR("Failed to create sink!\n"); if (prev_sink != NULL) dc_sink_release(prev_sink); return false; } sink->link->dongle_max_pix_clk = sink_caps.max_hdmi_pixel_clock; sink->converter_disable_audio = converter_disable_audio; /* dc_sink_create returns a new reference */ link->local_sink = sink; edid_status = dm_helpers_read_local_edid( link->ctx, link, sink); switch (edid_status) { case EDID_BAD_CHECKSUM: DC_LOG_ERROR("EDID checksum invalid.\n"); break; case EDID_NO_RESPONSE: DC_LOG_ERROR("No EDID read.\n"); /* * Abort detection for non-DP connectors if we have * no EDID * * DP needs to report as connected if HDP is high * even if we have no EDID in order to go to * fail-safe mode */ if (dc_is_hdmi_signal(link->connector_signal) || dc_is_dvi_signal(link->connector_signal)) { if (prev_sink != NULL) dc_sink_release(prev_sink); return false; } default: break; } // Check if edid is the same if ((prev_sink != NULL) && ((edid_status == EDID_THE_SAME) || (edid_status == EDID_OK))) same_edid = is_same_edid(&prev_sink->dc_edid, &sink->dc_edid); if (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT && sink_caps.transaction_type == DDC_TRANSACTION_TYPE_I2C_OVER_AUX && reason != DETECT_REASON_HPDRX) { /* * TODO debug why Dell 2413 doesn't like * two link trainings */ /* deal with non-mst cases */ dp_verify_link_cap_with_retries(link, &link->reported_link_cap, LINK_TRAINING_MAX_VERIFY_RETRY); } else { // If edid is the same, then discard new sink and revert back to original sink if (same_edid) { link_disconnect_remap(prev_sink, link); sink = prev_sink; prev_sink = NULL; } } /* HDMI-DVI Dongle */ if (sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A && !sink->edid_caps.edid_hdmi) sink->sink_signal = SIGNAL_TYPE_DVI_SINGLE_LINK; /* Connectivity log: detection */ for (i = 0; i < sink->dc_edid.length / DC_EDID_BLOCK_SIZE; i++) { CONN_DATA_DETECT(link, &sink->dc_edid.raw_edid[i * DC_EDID_BLOCK_SIZE], DC_EDID_BLOCK_SIZE, "%s: [Block %d] ", sink->edid_caps.display_name, i); } DC_LOG_DETECTION_EDID_PARSER("%s: " "manufacturer_id = %X, " "product_id = %X, " "serial_number = %X, " "manufacture_week = %d, " "manufacture_year = %d, " "display_name = %s, " "speaker_flag = %d, " "audio_mode_count = %d\n", __func__, sink->edid_caps.manufacturer_id, sink->edid_caps.product_id, sink->edid_caps.serial_number, sink->edid_caps.manufacture_week, sink->edid_caps.manufacture_year, sink->edid_caps.display_name, sink->edid_caps.speaker_flags, sink->edid_caps.audio_mode_count); for (i = 0; i < sink->edid_caps.audio_mode_count; i++) { DC_LOG_DETECTION_EDID_PARSER("%s: mode number = %d, " "format_code = %d, " "channel_count = %d, " "sample_rate = %d, " "sample_size = %d\n", __func__, i, sink->edid_caps.audio_modes[i].format_code, sink->edid_caps.audio_modes[i].channel_count, sink->edid_caps.audio_modes[i].sample_rate, sink->edid_caps.audio_modes[i].sample_size); } } else { /* From Connected-to-Disconnected. */ if (link->type == dc_connection_mst_branch) { LINK_INFO("link=%d, mst branch is now Disconnected\n", link->link_index); dm_helpers_dp_mst_stop_top_mgr(link->ctx, link); link->mst_stream_alloc_table.stream_count = 0; memset(link->mst_stream_alloc_table.stream_allocations, 0, sizeof(link->mst_stream_alloc_table.stream_allocations)); } link->type = dc_connection_none; sink_caps.signal = SIGNAL_TYPE_NONE; /* When we unplug a passive DP-HDMI dongle connection, dongle_max_pix_clk * is not cleared. If we emulate a DP signal on this connection, it thinks * the dongle is still there and limits the number of modes we can emulate. * Clear dongle_max_pix_clk on disconnect to fix this */ link->dongle_max_pix_clk = 0; } LINK_INFO("link=%d, dc_sink_in=%p is now %s prev_sink=%p dpcd same=%d edid same=%d\n", link->link_index, sink, (sink_caps.signal == SIGNAL_TYPE_NONE ? "Disconnected":"Connected"), prev_sink, same_dpcd, same_edid); if (prev_sink != NULL) dc_sink_release(prev_sink); return true; } bool dc_link_get_hpd_state(struct dc_link *dc_link) { uint32_t state; dal_gpio_lock_pin(dc_link->hpd_gpio); dal_gpio_get_value(dc_link->hpd_gpio, &state); dal_gpio_unlock_pin(dc_link->hpd_gpio); return state; } static enum hpd_source_id get_hpd_line( struct dc_link *link) { struct gpio *hpd; enum hpd_source_id hpd_id = HPD_SOURCEID_UNKNOWN; hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); if (hpd) { switch (dal_irq_get_source(hpd)) { case DC_IRQ_SOURCE_HPD1: hpd_id = HPD_SOURCEID1; break; case DC_IRQ_SOURCE_HPD2: hpd_id = HPD_SOURCEID2; break; case DC_IRQ_SOURCE_HPD3: hpd_id = HPD_SOURCEID3; break; case DC_IRQ_SOURCE_HPD4: hpd_id = HPD_SOURCEID4; break; case DC_IRQ_SOURCE_HPD5: hpd_id = HPD_SOURCEID5; break; case DC_IRQ_SOURCE_HPD6: hpd_id = HPD_SOURCEID6; break; default: BREAK_TO_DEBUGGER(); break; } dal_gpio_destroy_irq(&hpd); } return hpd_id; } static enum channel_id get_ddc_line(struct dc_link *link) { struct ddc *ddc; enum channel_id channel = CHANNEL_ID_UNKNOWN; ddc = dal_ddc_service_get_ddc_pin(link->ddc); if (ddc) { switch (dal_ddc_get_line(ddc)) { case GPIO_DDC_LINE_DDC1: channel = CHANNEL_ID_DDC1; break; case GPIO_DDC_LINE_DDC2: channel = CHANNEL_ID_DDC2; break; case GPIO_DDC_LINE_DDC3: channel = CHANNEL_ID_DDC3; break; case GPIO_DDC_LINE_DDC4: channel = CHANNEL_ID_DDC4; break; case GPIO_DDC_LINE_DDC5: channel = CHANNEL_ID_DDC5; break; case GPIO_DDC_LINE_DDC6: channel = CHANNEL_ID_DDC6; break; case GPIO_DDC_LINE_DDC_VGA: channel = CHANNEL_ID_DDC_VGA; break; case GPIO_DDC_LINE_I2C_PAD: channel = CHANNEL_ID_I2C_PAD; break; default: BREAK_TO_DEBUGGER(); break; } } return channel; } static enum transmitter translate_encoder_to_transmitter( struct graphics_object_id encoder) { switch (encoder.id) { case ENCODER_ID_INTERNAL_UNIPHY: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_UNIPHY_A; case ENUM_ID_2: return TRANSMITTER_UNIPHY_B; default: return TRANSMITTER_UNKNOWN; } break; case ENCODER_ID_INTERNAL_UNIPHY1: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_UNIPHY_C; case ENUM_ID_2: return TRANSMITTER_UNIPHY_D; default: return TRANSMITTER_UNKNOWN; } break; case ENCODER_ID_INTERNAL_UNIPHY2: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_UNIPHY_E; case ENUM_ID_2: return TRANSMITTER_UNIPHY_F; default: return TRANSMITTER_UNKNOWN; } break; case ENCODER_ID_INTERNAL_UNIPHY3: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_UNIPHY_G; default: return TRANSMITTER_UNKNOWN; } break; case ENCODER_ID_EXTERNAL_NUTMEG: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_NUTMEG_CRT; default: return TRANSMITTER_UNKNOWN; } break; case ENCODER_ID_EXTERNAL_TRAVIS: switch (encoder.enum_id) { case ENUM_ID_1: return TRANSMITTER_TRAVIS_CRT; case ENUM_ID_2: return TRANSMITTER_TRAVIS_LCD; default: return TRANSMITTER_UNKNOWN; } break; default: return TRANSMITTER_UNKNOWN; } } static bool construct( struct dc_link *link, const struct link_init_data *init_params) { uint8_t i; struct ddc_service_init_data ddc_service_init_data = { { 0 } }; struct dc_context *dc_ctx = init_params->ctx; struct encoder_init_data enc_init_data = { 0 }; struct integrated_info info = {{{ 0 }}}; struct dc_bios *bios = init_params->dc->ctx->dc_bios; const struct dc_vbios_funcs *bp_funcs = bios->funcs; DC_LOGGER_INIT(dc_ctx->logger); link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID; link->link_status.dpcd_caps = &link->dpcd_caps; link->dc = init_params->dc; link->ctx = dc_ctx; link->link_index = init_params->link_index; memset(&link->preferred_training_settings, 0, sizeof(struct dc_link_training_overrides)); memset(&link->preferred_link_setting, 0, sizeof(struct dc_link_settings)); link->link_id = bios->funcs->get_connector_id(bios, init_params->connector_index); if (link->link_id.type != OBJECT_TYPE_CONNECTOR) { dm_output_to_console("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n", __func__, init_params->connector_index, link->link_id.type, OBJECT_TYPE_CONNECTOR); goto create_fail; } if (link->dc->res_pool->funcs->link_init) link->dc->res_pool->funcs->link_init(link); link->hpd_gpio = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); if (link->hpd_gpio != NULL) { dal_gpio_open(link->hpd_gpio, GPIO_MODE_INTERRUPT); dal_gpio_unlock_pin(link->hpd_gpio); link->irq_source_hpd = dal_irq_get_source(link->hpd_gpio); } switch (link->link_id.id) { case CONNECTOR_ID_HDMI_TYPE_A: link->connector_signal = SIGNAL_TYPE_HDMI_TYPE_A; break; case CONNECTOR_ID_SINGLE_LINK_DVID: case CONNECTOR_ID_SINGLE_LINK_DVII: link->connector_signal = SIGNAL_TYPE_DVI_SINGLE_LINK; break; case CONNECTOR_ID_DUAL_LINK_DVID: case CONNECTOR_ID_DUAL_LINK_DVII: link->connector_signal = SIGNAL_TYPE_DVI_DUAL_LINK; break; case CONNECTOR_ID_DISPLAY_PORT: link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT; if (link->hpd_gpio != NULL) link->irq_source_hpd_rx = dal_irq_get_rx_source(link->hpd_gpio); break; case CONNECTOR_ID_EDP: link->connector_signal = SIGNAL_TYPE_EDP; if (link->hpd_gpio != NULL) { link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; link->irq_source_hpd_rx = dal_irq_get_rx_source(link->hpd_gpio); } break; case CONNECTOR_ID_LVDS: link->connector_signal = SIGNAL_TYPE_LVDS; break; default: DC_LOG_WARNING("Unsupported Connector type:%d!\n", link->link_id.id); goto create_fail; } /* TODO: #DAL3 Implement id to str function.*/ LINK_INFO("Connector[%d] description:" "signal %d\n", init_params->connector_index, link->connector_signal); ddc_service_init_data.ctx = link->ctx; ddc_service_init_data.id = link->link_id; ddc_service_init_data.link = link; link->ddc = dal_ddc_service_create(&ddc_service_init_data); if (link->ddc == NULL) { DC_ERROR("Failed to create ddc_service!\n"); goto ddc_create_fail; } link->ddc_hw_inst = dal_ddc_get_line( dal_ddc_service_get_ddc_pin(link->ddc)); enc_init_data.ctx = dc_ctx; bp_funcs->get_src_obj(dc_ctx->dc_bios, link->link_id, 0, &enc_init_data.encoder); enc_init_data.connector = link->link_id; enc_init_data.channel = get_ddc_line(link); enc_init_data.hpd_source = get_hpd_line(link); link->hpd_src = enc_init_data.hpd_source; enc_init_data.transmitter = translate_encoder_to_transmitter(enc_init_data.encoder); link->link_enc = link->dc->res_pool->funcs->link_enc_create( &enc_init_data); if (link->link_enc == NULL) { DC_ERROR("Failed to create link encoder!\n"); goto link_enc_create_fail; } link->link_enc_hw_inst = link->link_enc->transmitter; for (i = 0; i < 4; i++) { if (BP_RESULT_OK != bp_funcs->get_device_tag(dc_ctx->dc_bios, link->link_id, i, &link->device_tag)) { DC_ERROR("Failed to find device tag!\n"); goto device_tag_fail; } /* Look for device tag that matches connector signal, * CRT for rgb, LCD for other supported signal tyes */ if (!bp_funcs->is_device_id_supported(dc_ctx->dc_bios, link->device_tag.dev_id)) continue; if (link->device_tag.dev_id.device_type == DEVICE_TYPE_CRT && link->connector_signal != SIGNAL_TYPE_RGB) continue; if (link->device_tag.dev_id.device_type == DEVICE_TYPE_LCD && link->connector_signal == SIGNAL_TYPE_RGB) continue; break; } if (bios->integrated_info) info = *bios->integrated_info; /* Look for channel mapping corresponding to connector and device tag */ for (i = 0; i < MAX_NUMBER_OF_EXT_DISPLAY_PATH; i++) { struct external_display_path *path = &info.ext_disp_conn_info.path[i]; if (path->device_connector_id.enum_id == link->link_id.enum_id && path->device_connector_id.id == link->link_id.id && path->device_connector_id.type == link->link_id.type) { if (link->device_tag.acpi_device != 0 && path->device_acpi_enum == link->device_tag.acpi_device) { link->ddi_channel_mapping = path->channel_mapping; link->chip_caps = path->caps; } else if (path->device_tag == link->device_tag.dev_id.raw_device_tag) { link->ddi_channel_mapping = path->channel_mapping; link->chip_caps = path->caps; } break; } } /* * TODO check if GPIO programmed correctly * * If GPIO isn't programmed correctly HPD might not rise or drain * fast enough, leading to bounces. */ program_hpd_filter(link); return true; device_tag_fail: link->link_enc->funcs->destroy(&link->link_enc); link_enc_create_fail: dal_ddc_service_destroy(&link->ddc); ddc_create_fail: create_fail: if (link->hpd_gpio != NULL) { dal_gpio_destroy_irq(&link->hpd_gpio); link->hpd_gpio = NULL; } return false; } /******************************************************************************* * Public functions ******************************************************************************/ struct dc_link *link_create(const struct link_init_data *init_params) { struct dc_link *link = kzalloc(sizeof(*link), GFP_KERNEL); if (NULL == link) goto alloc_fail; if (false == construct(link, init_params)) goto construct_fail; return link; construct_fail: kfree(link); alloc_fail: return NULL; } void link_destroy(struct dc_link **link) { destruct(*link); kfree(*link); *link = NULL; } static void enable_stream_features(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; union down_spread_ctrl old_downspread; union down_spread_ctrl new_downspread; core_link_read_dpcd(link, DP_DOWNSPREAD_CTRL, &old_downspread.raw, sizeof(old_downspread)); new_downspread.raw = old_downspread.raw; new_downspread.bits.IGNORE_MSA_TIMING_PARAM = (stream->ignore_msa_timing_param) ? 1 : 0; if (new_downspread.raw != old_downspread.raw) { core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL, &new_downspread.raw, sizeof(new_downspread)); } } static enum dc_status enable_link_dp( struct dc_state *state, struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; enum dc_status status; bool skip_video_pattern; struct dc_link *link = stream->link; struct dc_link_settings link_settings = {0}; enum dp_panel_mode panel_mode; #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT bool fec_enable; #endif int i; bool apply_seamless_boot_optimization = false; // check for seamless boot for (i = 0; i < state->stream_count; i++) { if (state->streams[i]->apply_seamless_boot_optimization) { apply_seamless_boot_optimization = true; break; } } /* get link settings for video mode timing */ decide_link_settings(stream, &link_settings); if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP) { /* If link settings are different than current and link already enabled * then need to disable before programming to new rate. */ if (link->link_status.link_active && (link->cur_link_settings.lane_count != link_settings.lane_count || link->cur_link_settings.link_rate != link_settings.link_rate)) { dp_disable_link_phy(link, pipe_ctx->stream->signal); } /*in case it is not on*/ link->dc->hwss.edp_power_control(link, true); link->dc->hwss.edp_wait_for_hpd_ready(link, true); } pipe_ctx->stream_res.pix_clk_params.requested_sym_clk = link_settings.link_rate * LINK_RATE_REF_FREQ_IN_KHZ; if (!apply_seamless_boot_optimization) state->clk_mgr->funcs->update_clocks(state->clk_mgr, state, false); dp_enable_link_phy( link, pipe_ctx->stream->signal, pipe_ctx->clock_source->id, &link_settings); if (stream->sink_patches.dppowerup_delay > 0) { int delay_dp_power_up_in_ms = stream->sink_patches.dppowerup_delay; msleep(delay_dp_power_up_in_ms); } panel_mode = dp_get_panel_mode(link); dp_set_panel_mode(link, panel_mode); skip_video_pattern = true; if (link_settings.link_rate == LINK_RATE_LOW) skip_video_pattern = false; if (link->aux_access_disabled) { dc_link_dp_perform_link_training_skip_aux(link, &link_settings); link->cur_link_settings = link_settings; status = DC_OK; } else if (perform_link_training_with_retries( link, &link_settings, skip_video_pattern, LINK_TRAINING_ATTEMPTS)) { link->cur_link_settings = link_settings; status = DC_OK; } else status = DC_FAIL_DP_LINK_TRAINING; #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (link->preferred_training_settings.fec_enable != NULL) fec_enable = *link->preferred_training_settings.fec_enable; else fec_enable = true; dp_set_fec_enable(link, fec_enable); #endif return status; } static enum dc_status enable_link_edp( struct dc_state *state, struct pipe_ctx *pipe_ctx) { enum dc_status status; status = enable_link_dp(state, pipe_ctx); return status; } static enum dc_status enable_link_dp_mst( struct dc_state *state, struct pipe_ctx *pipe_ctx) { struct dc_link *link = pipe_ctx->stream->link; /* sink signal type after MST branch is MST. Multiple MST sinks * share one link. Link DP PHY is enable or training only once. */ if (link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) return DC_OK; /* clear payload table */ dm_helpers_dp_mst_clear_payload_allocation_table(link->ctx, link); /* to make sure the pending down rep can be processed * before enabling the link */ dm_helpers_dp_mst_poll_pending_down_reply(link->ctx, link); /* set the sink to MST mode before enabling the link */ dp_enable_mst_on_sink(link, true); return enable_link_dp(state, pipe_ctx); } static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx, enum engine_id eng_id, struct ext_hdmi_settings *settings) { bool result = false; int i = 0; struct integrated_info *integrated_info = pipe_ctx->stream->ctx->dc_bios->integrated_info; if (integrated_info == NULL) return false; /* * Get retimer settings from sbios for passing SI eye test for DCE11 * The setting values are varied based on board revision and port id * Therefore the setting values of each ports is passed by sbios. */ // Check if current bios contains ext Hdmi settings if (integrated_info->gpu_cap_info & 0x20) { switch (eng_id) { case ENGINE_ID_DIGA: settings->slv_addr = integrated_info->dp0_ext_hdmi_slv_addr; settings->reg_num = integrated_info->dp0_ext_hdmi_6g_reg_num; settings->reg_num_6g = integrated_info->dp0_ext_hdmi_6g_reg_num; memmove(settings->reg_settings, integrated_info->dp0_ext_hdmi_reg_settings, sizeof(integrated_info->dp0_ext_hdmi_reg_settings)); memmove(settings->reg_settings_6g, integrated_info->dp0_ext_hdmi_6g_reg_settings, sizeof(integrated_info->dp0_ext_hdmi_6g_reg_settings)); result = true; break; case ENGINE_ID_DIGB: settings->slv_addr = integrated_info->dp1_ext_hdmi_slv_addr; settings->reg_num = integrated_info->dp1_ext_hdmi_6g_reg_num; settings->reg_num_6g = integrated_info->dp1_ext_hdmi_6g_reg_num; memmove(settings->reg_settings, integrated_info->dp1_ext_hdmi_reg_settings, sizeof(integrated_info->dp1_ext_hdmi_reg_settings)); memmove(settings->reg_settings_6g, integrated_info->dp1_ext_hdmi_6g_reg_settings, sizeof(integrated_info->dp1_ext_hdmi_6g_reg_settings)); result = true; break; case ENGINE_ID_DIGC: settings->slv_addr = integrated_info->dp2_ext_hdmi_slv_addr; settings->reg_num = integrated_info->dp2_ext_hdmi_6g_reg_num; settings->reg_num_6g = integrated_info->dp2_ext_hdmi_6g_reg_num; memmove(settings->reg_settings, integrated_info->dp2_ext_hdmi_reg_settings, sizeof(integrated_info->dp2_ext_hdmi_reg_settings)); memmove(settings->reg_settings_6g, integrated_info->dp2_ext_hdmi_6g_reg_settings, sizeof(integrated_info->dp2_ext_hdmi_6g_reg_settings)); result = true; break; case ENGINE_ID_DIGD: settings->slv_addr = integrated_info->dp3_ext_hdmi_slv_addr; settings->reg_num = integrated_info->dp3_ext_hdmi_6g_reg_num; settings->reg_num_6g = integrated_info->dp3_ext_hdmi_6g_reg_num; memmove(settings->reg_settings, integrated_info->dp3_ext_hdmi_reg_settings, sizeof(integrated_info->dp3_ext_hdmi_reg_settings)); memmove(settings->reg_settings_6g, integrated_info->dp3_ext_hdmi_6g_reg_settings, sizeof(integrated_info->dp3_ext_hdmi_6g_reg_settings)); result = true; break; default: break; } if (result == true) { // Validate settings from bios integrated info table if (settings->slv_addr == 0) return false; if (settings->reg_num > 9) return false; if (settings->reg_num_6g > 3) return false; for (i = 0; i < settings->reg_num; i++) { if (settings->reg_settings[i].i2c_reg_index > 0x20) return false; } for (i = 0; i < settings->reg_num_6g; i++) { if (settings->reg_settings_6g[i].i2c_reg_index > 0x20) return false; } } } return result; } static bool i2c_write(struct pipe_ctx *pipe_ctx, uint8_t address, uint8_t *buffer, uint32_t length) { struct i2c_command cmd = {0}; struct i2c_payload payload = {0}; memset(&payload, 0, sizeof(payload)); memset(&cmd, 0, sizeof(cmd)); cmd.number_of_payloads = 1; cmd.engine = I2C_COMMAND_ENGINE_DEFAULT; cmd.speed = pipe_ctx->stream->ctx->dc->caps.i2c_speed_in_khz; payload.address = address; payload.data = buffer; payload.length = length; payload.write = true; cmd.payloads = &payload; if (dm_helpers_submit_i2c(pipe_ctx->stream->ctx, pipe_ctx->stream->link, &cmd)) return true; return false; } static void write_i2c_retimer_setting( struct pipe_ctx *pipe_ctx, bool is_vga_mode, bool is_over_340mhz, struct ext_hdmi_settings *settings) { uint8_t slave_address = (settings->slv_addr >> 1); uint8_t buffer[2]; const uint8_t apply_rx_tx_change = 0x4; uint8_t offset = 0xA; uint8_t value = 0; int i = 0; bool i2c_success = false; DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); memset(&buffer, 0, sizeof(buffer)); /* Start Ext-Hdmi programming*/ for (i = 0; i < settings->reg_num; i++) { /* Apply 3G settings */ if (settings->reg_settings[i].i2c_reg_index <= 0x20) { buffer[0] = settings->reg_settings[i].i2c_reg_index; buffer[1] = settings->reg_settings[i].i2c_reg_val; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A * needs to be set to 1 on every 0xA-0xC write. */ if (settings->reg_settings[i].i2c_reg_index == 0xA || settings->reg_settings[i].i2c_reg_index == 0xB || settings->reg_settings[i].i2c_reg_index == 0xC) { /* Query current value from offset 0xA */ if (settings->reg_settings[i].i2c_reg_index == 0xA) value = settings->reg_settings[i].i2c_reg_val; else { i2c_success = dal_ddc_service_query_ddc_data( pipe_ctx->stream->link->ddc, slave_address, &offset, 1, &value, 1); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } buffer[0] = offset; /* Set APPLY_RX_TX_CHANGE bit to 1 */ buffer[1] = value | apply_rx_tx_change; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } } } /* Apply 3G settings */ if (is_over_340mhz) { for (i = 0; i < settings->reg_num_6g; i++) { /* Apply 3G settings */ if (settings->reg_settings[i].i2c_reg_index <= 0x20) { buffer[0] = settings->reg_settings_6g[i].i2c_reg_index; buffer[1] = settings->reg_settings_6g[i].i2c_reg_val; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("above 340Mhz: retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Based on DP159 specs, APPLY_RX_TX_CHANGE bit in 0x0A * needs to be set to 1 on every 0xA-0xC write. */ if (settings->reg_settings_6g[i].i2c_reg_index == 0xA || settings->reg_settings_6g[i].i2c_reg_index == 0xB || settings->reg_settings_6g[i].i2c_reg_index == 0xC) { /* Query current value from offset 0xA */ if (settings->reg_settings_6g[i].i2c_reg_index == 0xA) value = settings->reg_settings_6g[i].i2c_reg_val; else { i2c_success = dal_ddc_service_query_ddc_data( pipe_ctx->stream->link->ddc, slave_address, &offset, 1, &value, 1); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } buffer[0] = offset; /* Set APPLY_RX_TX_CHANGE bit to 1 */ buffer[1] = value | apply_rx_tx_change; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } } } } if (is_vga_mode) { /* Program additional settings if using 640x480 resolution */ /* Write offset 0xFF to 0x01 */ buffer[0] = 0xff; buffer[1] = 0x01; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x00 to 0x23 */ buffer[0] = 0x00; buffer[1] = 0x23; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0xff to 0x00 */ buffer[0] = 0xff; buffer[1] = 0x00; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } } static void write_i2c_default_retimer_setting( struct pipe_ctx *pipe_ctx, bool is_vga_mode, bool is_over_340mhz) { uint8_t slave_address = (0xBA >> 1); uint8_t buffer[2]; bool i2c_success = false; DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); memset(&buffer, 0, sizeof(buffer)); /* Program Slave Address for tuning single integrity */ /* Write offset 0x0A to 0x13 */ buffer[0] = 0x0A; buffer[1] = 0x13; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer writes default setting to slave_address = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x0A to 0x17 */ buffer[0] = 0x0A; buffer[1] = 0x17; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x0B to 0xDA or 0xD8 */ buffer[0] = 0x0B; buffer[1] = is_over_340mhz ? 0xDA : 0xD8; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x0A to 0x17 */ buffer[0] = 0x0A; buffer[1] = 0x17; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x0C to 0x1D or 0x91 */ buffer[0] = 0x0C; buffer[1] = is_over_340mhz ? 0x1D : 0x91; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x0A to 0x17 */ buffer[0] = 0x0A; buffer[1] = 0x17; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); if (is_vga_mode) { /* Program additional settings if using 640x480 resolution */ /* Write offset 0xFF to 0x01 */ buffer[0] = 0xff; buffer[1] = 0x01; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val = 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0x00 to 0x23 */ buffer[0] = 0x00; buffer[1] = 0x23; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write to slave_addr = 0x%x,\ offset = 0x%x, reg_val= 0x%x, i2c_success = %d\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); /* Write offset 0xff to 0x00 */ buffer[0] = 0xff; buffer[1] = 0x00; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("retimer write default setting to slave_addr = 0x%x,\ offset = 0x%x, reg_val= 0x%x, i2c_success = %d end here\n", slave_address, buffer[0], buffer[1], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } } static void write_i2c_redriver_setting( struct pipe_ctx *pipe_ctx, bool is_over_340mhz) { uint8_t slave_address = (0xF0 >> 1); uint8_t buffer[16]; bool i2c_success = false; DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); memset(&buffer, 0, sizeof(buffer)); // Program Slave Address for tuning single integrity buffer[3] = 0x4E; buffer[4] = 0x4E; buffer[5] = 0x4E; buffer[6] = is_over_340mhz ? 0x4E : 0x4A; i2c_success = i2c_write(pipe_ctx, slave_address, buffer, sizeof(buffer)); RETIMER_REDRIVER_INFO("redriver write 0 to all 16 reg offset expect following:\n\ \t slave_addr = 0x%x, offset[3] = 0x%x, offset[4] = 0x%x,\ offset[5] = 0x%x,offset[6] is_over_340mhz = 0x%x,\ i2c_success = %d\n", slave_address, buffer[3], buffer[4], buffer[5], buffer[6], i2c_success?1:0); if (!i2c_success) /* Write failure */ ASSERT(i2c_success); } static void enable_link_hdmi(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; enum dc_color_depth display_color_depth; enum engine_id eng_id; struct ext_hdmi_settings settings = {0}; bool is_over_340mhz = false; bool is_vga_mode = (stream->timing.h_addressable == 640) && (stream->timing.v_addressable == 480); if (stream->phy_pix_clk == 0) stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10; if (stream->phy_pix_clk > 340000) is_over_340mhz = true; if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) { unsigned short masked_chip_caps = pipe_ctx->stream->link->chip_caps & EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK; if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_TISN65DP159RSBT) { /* DP159, Retimer settings */ eng_id = pipe_ctx->stream_res.stream_enc->id; if (get_ext_hdmi_settings(pipe_ctx, eng_id, &settings)) { write_i2c_retimer_setting(pipe_ctx, is_vga_mode, is_over_340mhz, &settings); } else { write_i2c_default_retimer_setting(pipe_ctx, is_vga_mode, is_over_340mhz); } } else if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_PI3EQX1204) { /* PI3EQX1204, Redriver settings */ write_i2c_redriver_setting(pipe_ctx, is_over_340mhz); } } if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) dal_ddc_service_write_scdc_data( stream->link->ddc, stream->phy_pix_clk, stream->timing.flags.LTE_340MCSC_SCRAMBLE); memset(&stream->link->cur_link_settings, 0, sizeof(struct dc_link_settings)); display_color_depth = stream->timing.display_color_depth; if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422) display_color_depth = COLOR_DEPTH_888; link->link_enc->funcs->enable_tmds_output( link->link_enc, pipe_ctx->clock_source->id, display_color_depth, pipe_ctx->stream->signal, stream->phy_pix_clk); if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) dal_ddc_service_read_scdc_data(link->ddc); } static void enable_link_lvds(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; if (stream->phy_pix_clk == 0) stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10; memset(&stream->link->cur_link_settings, 0, sizeof(struct dc_link_settings)); link->link_enc->funcs->enable_lvds_output( link->link_enc, pipe_ctx->clock_source->id, stream->phy_pix_clk); } /****************************enable_link***********************************/ static enum dc_status enable_link( struct dc_state *state, struct pipe_ctx *pipe_ctx) { enum dc_status status = DC_ERROR_UNEXPECTED; switch (pipe_ctx->stream->signal) { case SIGNAL_TYPE_DISPLAY_PORT: status = enable_link_dp(state, pipe_ctx); break; case SIGNAL_TYPE_EDP: status = enable_link_edp(state, pipe_ctx); break; case SIGNAL_TYPE_DISPLAY_PORT_MST: status = enable_link_dp_mst(state, pipe_ctx); msleep(200); break; case SIGNAL_TYPE_DVI_SINGLE_LINK: case SIGNAL_TYPE_DVI_DUAL_LINK: case SIGNAL_TYPE_HDMI_TYPE_A: enable_link_hdmi(pipe_ctx); status = DC_OK; break; case SIGNAL_TYPE_LVDS: enable_link_lvds(pipe_ctx); status = DC_OK; break; case SIGNAL_TYPE_VIRTUAL: status = DC_OK; break; default: break; } if (status == DC_OK) pipe_ctx->stream->link->link_status.link_active = true; return status; } static void disable_link(struct dc_link *link, enum signal_type signal) { /* * TODO: implement call for dp_set_hw_test_pattern * it is needed for compliance testing */ /* here we need to specify that encoder output settings * need to be calculated as for the set mode, * it will lead to querying dynamic link capabilities * which should be done before enable output */ if (dc_is_dp_signal(signal)) { /* SST DP, eDP */ if (dc_is_dp_sst_signal(signal)) dp_disable_link_phy(link, signal); else dp_disable_link_phy_mst(link, signal); #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (dc_is_dp_sst_signal(signal) || link->mst_stream_alloc_table.stream_count == 0) { dp_set_fec_enable(link, false); dp_set_fec_ready(link, false); } #endif } else link->link_enc->funcs->disable_output(link->link_enc, signal); if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { /* MST disable link only when no stream use the link */ if (link->mst_stream_alloc_table.stream_count <= 0) link->link_status.link_active = false; } else { link->link_status.link_active = false; } } static uint32_t get_timing_pixel_clock_100hz(const struct dc_crtc_timing *timing) { uint32_t pxl_clk = timing->pix_clk_100hz; if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) pxl_clk /= 2; else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) pxl_clk = pxl_clk * 2 / 3; if (timing->display_color_depth == COLOR_DEPTH_101010) pxl_clk = pxl_clk * 10 / 8; else if (timing->display_color_depth == COLOR_DEPTH_121212) pxl_clk = pxl_clk * 12 / 8; return pxl_clk; } static bool dp_active_dongle_validate_timing( const struct dc_crtc_timing *timing, const struct dpcd_caps *dpcd_caps) { const struct dc_dongle_caps *dongle_caps = &dpcd_caps->dongle_caps; switch (dpcd_caps->dongle_type) { case DISPLAY_DONGLE_DP_VGA_CONVERTER: case DISPLAY_DONGLE_DP_DVI_CONVERTER: case DISPLAY_DONGLE_DP_DVI_DONGLE: if (timing->pixel_encoding == PIXEL_ENCODING_RGB) return true; else return false; default: break; } if (dongle_caps->dongle_type != DISPLAY_DONGLE_DP_HDMI_CONVERTER || dongle_caps->extendedCapValid == false) return true; /* Check Pixel Encoding */ switch (timing->pixel_encoding) { case PIXEL_ENCODING_RGB: case PIXEL_ENCODING_YCBCR444: break; case PIXEL_ENCODING_YCBCR422: if (!dongle_caps->is_dp_hdmi_ycbcr422_pass_through) return false; break; case PIXEL_ENCODING_YCBCR420: if (!dongle_caps->is_dp_hdmi_ycbcr420_pass_through) return false; break; default: /* Invalid Pixel Encoding*/ return false; } switch (timing->display_color_depth) { case COLOR_DEPTH_666: case COLOR_DEPTH_888: /*888 and 666 should always be supported*/ break; case COLOR_DEPTH_101010: if (dongle_caps->dp_hdmi_max_bpc < 10) return false; break; case COLOR_DEPTH_121212: if (dongle_caps->dp_hdmi_max_bpc < 12) return false; break; case COLOR_DEPTH_141414: case COLOR_DEPTH_161616: default: /* These color depths are currently not supported */ return false; } if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk_in_khz * 10)) return false; return true; } enum dc_status dc_link_validate_mode_timing( const struct dc_stream_state *stream, struct dc_link *link, const struct dc_crtc_timing *timing) { uint32_t max_pix_clk = stream->link->dongle_max_pix_clk * 10; struct dpcd_caps *dpcd_caps = &link->dpcd_caps; /* A hack to avoid failing any modes for EDID override feature on * topology change such as lower quality cable for DP or different dongle */ if (link->remote_sinks[0]) return DC_OK; /* Passive Dongle */ if (max_pix_clk != 0 && get_timing_pixel_clock_100hz(timing) > max_pix_clk) return DC_EXCEED_DONGLE_CAP; /* Active Dongle*/ if (!dp_active_dongle_validate_timing(timing, dpcd_caps)) return DC_EXCEED_DONGLE_CAP; switch (stream->signal) { case SIGNAL_TYPE_EDP: case SIGNAL_TYPE_DISPLAY_PORT: if (!dp_validate_mode_timing( link, timing)) return DC_NO_DP_LINK_BANDWIDTH; break; default: break; } return DC_OK; } int dc_link_get_backlight_level(const struct dc_link *link) { struct abm *abm = link->ctx->dc->res_pool->abm; if (abm == NULL || abm->funcs->get_current_backlight == NULL) return DC_ERROR_UNEXPECTED; return (int) abm->funcs->get_current_backlight(abm); } bool dc_link_set_backlight_level(const struct dc_link *link, uint32_t backlight_pwm_u16_16, uint32_t frame_ramp) { struct dc *core_dc = link->ctx->dc; struct abm *abm = core_dc->res_pool->abm; struct dmcu *dmcu = core_dc->res_pool->dmcu; unsigned int controller_id = 0; bool use_smooth_brightness = true; int i; DC_LOGGER_INIT(link->ctx->logger); if ((dmcu == NULL) || (abm == NULL) || (abm->funcs->set_backlight_level_pwm == NULL)) return false; use_smooth_brightness = dmcu->funcs->is_dmcu_initialized(dmcu); DC_LOG_BACKLIGHT("New Backlight level: %d (0x%X)\n", backlight_pwm_u16_16, backlight_pwm_u16_16); if (dc_is_embedded_signal(link->connector_signal)) { for (i = 0; i < MAX_PIPES; i++) { if (core_dc->current_state->res_ctx.pipe_ctx[i].stream) { if (core_dc->current_state->res_ctx. pipe_ctx[i].stream->link == link) { /* DMCU -1 for all controller id values, * therefore +1 here */ controller_id = core_dc->current_state-> res_ctx.pipe_ctx[i].stream_res.tg->inst + 1; /* Disable brightness ramping when the display is blanked * as it can hang the DMCU */ if (core_dc->current_state->res_ctx.pipe_ctx[i].plane_state == NULL) frame_ramp = 0; } } } abm->funcs->set_backlight_level_pwm( abm, backlight_pwm_u16_16, frame_ramp, controller_id, use_smooth_brightness); } return true; } bool dc_link_set_abm_disable(const struct dc_link *link) { struct dc *core_dc = link->ctx->dc; struct abm *abm = core_dc->res_pool->abm; if ((abm == NULL) || (abm->funcs->set_backlight_level_pwm == NULL)) return false; abm->funcs->set_abm_immediate_disable(abm); return true; } bool dc_link_set_psr_enable(const struct dc_link *link, bool enable, bool wait) { struct dc *core_dc = link->ctx->dc; struct dmcu *dmcu = core_dc->res_pool->dmcu; if ((dmcu != NULL && dmcu->funcs->is_dmcu_initialized(dmcu)) && link->psr_enabled) dmcu->funcs->set_psr_enable(dmcu, enable, wait); return true; } const struct dc_link_status *dc_link_get_status(const struct dc_link *link) { return &link->link_status; } void core_link_resume(struct dc_link *link) { if (link->connector_signal != SIGNAL_TYPE_VIRTUAL) program_hpd_filter(link); } static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream) { struct fixed31_32 mbytes_per_sec; uint32_t link_rate_in_mbytes_per_sec = dc_link_bandwidth_kbps(stream->link, &stream->link->cur_link_settings); link_rate_in_mbytes_per_sec /= 8000; /* Kbits to MBytes */ mbytes_per_sec = dc_fixpt_from_int(link_rate_in_mbytes_per_sec); return dc_fixpt_div_int(mbytes_per_sec, 54); } static int get_color_depth(enum dc_color_depth color_depth) { switch (color_depth) { case COLOR_DEPTH_666: return 6; case COLOR_DEPTH_888: return 8; case COLOR_DEPTH_101010: return 10; case COLOR_DEPTH_121212: return 12; case COLOR_DEPTH_141414: return 14; case COLOR_DEPTH_161616: return 16; default: return 0; } } static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx) { uint32_t bpc; uint64_t kbps; struct fixed31_32 peak_kbps; uint32_t numerator; uint32_t denominator; bpc = get_color_depth(pipe_ctx->stream_res.pix_clk_params.color_depth); kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing); /* * margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006 * The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on * common multiplier to render an integer PBN for all link rate/lane * counts combinations * calculate * peak_kbps *= (1006/1000) * peak_kbps *= (64/54) * peak_kbps *= 8 convert to bytes */ numerator = 64 * PEAK_FACTOR_X1000; denominator = 54 * 8 * 1000 * 1000; kbps *= numerator; peak_kbps = dc_fixpt_from_fraction(kbps, denominator); return peak_kbps; } static void update_mst_stream_alloc_table( struct dc_link *link, struct stream_encoder *stream_enc, const struct dp_mst_stream_allocation_table *proposed_table) { struct link_mst_stream_allocation work_table[MAX_CONTROLLER_NUM] = { { 0 } }; struct link_mst_stream_allocation *dc_alloc; int i; int j; /* if DRM proposed_table has more than one new payload */ ASSERT(proposed_table->stream_count - link->mst_stream_alloc_table.stream_count < 2); /* copy proposed_table to link, add stream encoder */ for (i = 0; i < proposed_table->stream_count; i++) { for (j = 0; j < link->mst_stream_alloc_table.stream_count; j++) { dc_alloc = &link->mst_stream_alloc_table.stream_allocations[j]; if (dc_alloc->vcp_id == proposed_table->stream_allocations[i].vcp_id) { work_table[i] = *dc_alloc; break; /* exit j loop */ } } /* new vcp_id */ if (j == link->mst_stream_alloc_table.stream_count) { work_table[i].vcp_id = proposed_table->stream_allocations[i].vcp_id; work_table[i].slot_count = proposed_table->stream_allocations[i].slot_count; work_table[i].stream_enc = stream_enc; } } /* update link->mst_stream_alloc_table with work_table */ link->mst_stream_alloc_table.stream_count = proposed_table->stream_count; for (i = 0; i < MAX_CONTROLLER_NUM; i++) link->mst_stream_alloc_table.stream_allocations[i] = work_table[i]; } /* convert link_mst_stream_alloc_table to dm dp_mst_stream_alloc_table * because stream_encoder is not exposed to dm */ static enum dc_status allocate_mst_payload(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; struct link_encoder *link_encoder = link->link_enc; struct stream_encoder *stream_encoder = pipe_ctx->stream_res.stream_enc; struct dp_mst_stream_allocation_table proposed_table = {0}; struct fixed31_32 avg_time_slots_per_mtp; struct fixed31_32 pbn; struct fixed31_32 pbn_per_slot; uint8_t i; DC_LOGGER_INIT(link->ctx->logger); /* enable_link_dp_mst already check link->enabled_stream_count * and stream is in link->stream[]. This is called during set mode, * stream_enc is available. */ /* get calculate VC payload for stream: stream_alloc */ if (dm_helpers_dp_mst_write_payload_allocation_table( stream->ctx, stream, &proposed_table, true)) { update_mst_stream_alloc_table( link, pipe_ctx->stream_res.stream_enc, &proposed_table); } else DC_LOG_WARNING("Failed to update" "MST allocation table for" "pipe idx:%d\n", pipe_ctx->pipe_idx); DC_LOG_MST("%s " "stream_count: %d: \n ", __func__, link->mst_stream_alloc_table.stream_count); for (i = 0; i < MAX_CONTROLLER_NUM; i++) { DC_LOG_MST("stream_enc[%d]: %p " "stream[%d].vcp_id: %d " "stream[%d].slot_count: %d\n", i, (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc, i, link->mst_stream_alloc_table.stream_allocations[i].vcp_id, i, link->mst_stream_alloc_table.stream_allocations[i].slot_count); } ASSERT(proposed_table.stream_count > 0); /* program DP source TX for payload */ link_encoder->funcs->update_mst_stream_allocation_table( link_encoder, &link->mst_stream_alloc_table); /* send down message */ dm_helpers_dp_mst_poll_for_allocation_change_trigger( stream->ctx, stream); dm_helpers_dp_mst_send_payload_allocation( stream->ctx, stream, true); /* slot X.Y for only current stream */ pbn_per_slot = get_pbn_per_slot(stream); pbn = get_pbn_from_timing(pipe_ctx); avg_time_slots_per_mtp = dc_fixpt_div(pbn, pbn_per_slot); stream_encoder->funcs->set_mst_bandwidth( stream_encoder, avg_time_slots_per_mtp); return DC_OK; } static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; struct link_encoder *link_encoder = link->link_enc; struct stream_encoder *stream_encoder = pipe_ctx->stream_res.stream_enc; struct dp_mst_stream_allocation_table proposed_table = {0}; struct fixed31_32 avg_time_slots_per_mtp = dc_fixpt_from_int(0); uint8_t i; bool mst_mode = (link->type == dc_connection_mst_branch); DC_LOGGER_INIT(link->ctx->logger); /* deallocate_mst_payload is called before disable link. When mode or * disable/enable monitor, new stream is created which is not in link * stream[] yet. For this, payload is not allocated yet, so de-alloc * should not done. For new mode set, map_resources will get engine * for new stream, so stream_enc->id should be validated until here. */ /* slot X.Y */ stream_encoder->funcs->set_mst_bandwidth( stream_encoder, avg_time_slots_per_mtp); /* TODO: which component is responsible for remove payload table? */ if (mst_mode) { if (dm_helpers_dp_mst_write_payload_allocation_table( stream->ctx, stream, &proposed_table, false)) { update_mst_stream_alloc_table( link, pipe_ctx->stream_res.stream_enc, &proposed_table); } else { DC_LOG_WARNING("Failed to update" "MST allocation table for" "pipe idx:%d\n", pipe_ctx->pipe_idx); } } DC_LOG_MST("%s" "stream_count: %d: ", __func__, link->mst_stream_alloc_table.stream_count); for (i = 0; i < MAX_CONTROLLER_NUM; i++) { DC_LOG_MST("stream_enc[%d]: %p " "stream[%d].vcp_id: %d " "stream[%d].slot_count: %d\n", i, (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc, i, link->mst_stream_alloc_table.stream_allocations[i].vcp_id, i, link->mst_stream_alloc_table.stream_allocations[i].slot_count); } link_encoder->funcs->update_mst_stream_allocation_table( link_encoder, &link->mst_stream_alloc_table); if (mst_mode) { dm_helpers_dp_mst_poll_for_allocation_change_trigger( stream->ctx, stream); dm_helpers_dp_mst_send_payload_allocation( stream->ctx, stream, false); } return DC_OK; } void core_link_enable_stream( struct dc_state *state, struct pipe_ctx *pipe_ctx) { struct dc *core_dc = pipe_ctx->stream->ctx->dc; struct dc_stream_state *stream = pipe_ctx->stream; enum dc_status status; DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); if (!dc_is_virtual_signal(pipe_ctx->stream->signal)) { stream->link->link_enc->funcs->setup( stream->link->link_enc, pipe_ctx->stream->signal); pipe_ctx->stream_res.stream_enc->funcs->setup_stereo_sync( pipe_ctx->stream_res.stream_enc, pipe_ctx->stream_res.tg->inst, stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE); } if (dc_is_dp_signal(pipe_ctx->stream->signal)) pipe_ctx->stream_res.stream_enc->funcs->dp_set_stream_attribute( pipe_ctx->stream_res.stream_enc, &stream->timing, stream->output_color_space, stream->link->dpcd_caps.dprx_feature.bits.SST_SPLIT_SDP_CAP); if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal)) pipe_ctx->stream_res.stream_enc->funcs->hdmi_set_stream_attribute( pipe_ctx->stream_res.stream_enc, &stream->timing, stream->phy_pix_clk, pipe_ctx->stream_res.audio != NULL); pipe_ctx->stream->link->link_state_valid = true; if (dc_is_dvi_signal(pipe_ctx->stream->signal)) pipe_ctx->stream_res.stream_enc->funcs->dvi_set_stream_attribute( pipe_ctx->stream_res.stream_enc, &stream->timing, (pipe_ctx->stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK) ? true : false); if (dc_is_lvds_signal(pipe_ctx->stream->signal)) pipe_ctx->stream_res.stream_enc->funcs->lvds_set_stream_attribute( pipe_ctx->stream_res.stream_enc, &stream->timing); if (!IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment)) { bool apply_edp_fast_boot_optimization = pipe_ctx->stream->apply_edp_fast_boot_optimization; pipe_ctx->stream->apply_edp_fast_boot_optimization = false; resource_build_info_frame(pipe_ctx); core_dc->hwss.update_info_frame(pipe_ctx); /* Do not touch link on seamless boot optimization. */ if (pipe_ctx->stream->apply_seamless_boot_optimization) { pipe_ctx->stream->dpms_off = false; return; } /* eDP lit up by bios already, no need to enable again. */ if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP && apply_edp_fast_boot_optimization) { pipe_ctx->stream->dpms_off = false; return; } if (pipe_ctx->stream->dpms_off) return; status = enable_link(state, pipe_ctx); if (status != DC_OK) { DC_LOG_WARNING("enabling link %u failed: %d\n", pipe_ctx->stream->link->link_index, status); /* Abort stream enable *unless* the failure was due to * DP link training - some DP monitors will recover and * show the stream anyway. But MST displays can't proceed * without link training. */ if (status != DC_FAIL_DP_LINK_TRAINING || pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { BREAK_TO_DEBUGGER(); return; } } core_dc->hwss.enable_audio_stream(pipe_ctx); /* turn off otg test pattern if enable */ if (pipe_ctx->stream_res.tg->funcs->set_test_pattern) pipe_ctx->stream_res.tg->funcs->set_test_pattern(pipe_ctx->stream_res.tg, CONTROLLER_DP_TEST_PATTERN_VIDEOMODE, COLOR_DEPTH_UNDEFINED); #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (pipe_ctx->stream->timing.flags.DSC) { if (dc_is_dp_signal(pipe_ctx->stream->signal) || dc_is_virtual_signal(pipe_ctx->stream->signal)) dp_set_dsc_enable(pipe_ctx, true); } #endif core_dc->hwss.enable_stream(pipe_ctx); #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT /* Set DPS PPS SDP (AKA "info frames") */ if (pipe_ctx->stream->timing.flags.DSC) { if (dc_is_dp_signal(pipe_ctx->stream->signal) || dc_is_virtual_signal(pipe_ctx->stream->signal)) dp_set_dsc_pps_sdp(pipe_ctx, true); } #endif if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) allocate_mst_payload(pipe_ctx); core_dc->hwss.unblank_stream(pipe_ctx, &pipe_ctx->stream->link->cur_link_settings); if (dc_is_dp_signal(pipe_ctx->stream->signal)) enable_stream_features(pipe_ctx); } #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT else { // if (IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment)) if (dc_is_dp_signal(pipe_ctx->stream->signal) || dc_is_virtual_signal(pipe_ctx->stream->signal)) dp_set_dsc_enable(pipe_ctx, true); } #endif } void core_link_disable_stream(struct pipe_ctx *pipe_ctx) { struct dc *core_dc = pipe_ctx->stream->ctx->dc; struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->sink->link; core_dc->hwss.blank_stream(pipe_ctx); if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) deallocate_mst_payload(pipe_ctx); if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) { struct ext_hdmi_settings settings = {0}; enum engine_id eng_id = pipe_ctx->stream_res.stream_enc->id; unsigned short masked_chip_caps = link->chip_caps & EXT_DISPLAY_PATH_CAPS__EXT_CHIP_MASK; //Need to inform that sink is going to use legacy HDMI mode. dal_ddc_service_write_scdc_data( link->ddc, 165000,//vbios only handles 165Mhz. false); if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_TISN65DP159RSBT) { /* DP159, Retimer settings */ if (get_ext_hdmi_settings(pipe_ctx, eng_id, &settings)) write_i2c_retimer_setting(pipe_ctx, false, false, &settings); else write_i2c_default_retimer_setting(pipe_ctx, false, false); } else if (masked_chip_caps == EXT_DISPLAY_PATH_CAPS__HDMI20_PI3EQX1204) { /* PI3EQX1204, Redriver settings */ write_i2c_redriver_setting(pipe_ctx, false); } } core_dc->hwss.disable_stream(pipe_ctx); disable_link(pipe_ctx->stream->link, pipe_ctx->stream->signal); #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (pipe_ctx->stream->timing.flags.DSC) { if (dc_is_dp_signal(pipe_ctx->stream->signal)) dp_set_dsc_enable(pipe_ctx, false); } #endif } void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable) { struct dc *core_dc = pipe_ctx->stream->ctx->dc; if (!dc_is_hdmi_signal(pipe_ctx->stream->signal)) return; core_dc->hwss.set_avmute(pipe_ctx, enable); } /** ***************************************************************************** * Function: dc_link_enable_hpd_filter * * @brief * If enable is true, programs HPD filter on associated HPD line using * delay_on_disconnect/delay_on_connect values dependent on * link->connector_signal * * If enable is false, programs HPD filter on associated HPD line with no * delays on connect or disconnect * * @param [in] link: pointer to the dc link * @param [in] enable: boolean specifying whether to enable hbd ***************************************************************************** */ void dc_link_enable_hpd_filter(struct dc_link *link, bool enable) { struct gpio *hpd; if (enable) { link->is_hpd_filter_disabled = false; program_hpd_filter(link); } else { link->is_hpd_filter_disabled = true; /* Obtain HPD handle */ hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); if (!hpd) return; /* Setup HPD filtering */ if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) { struct gpio_hpd_config config; config.delay_on_connect = 0; config.delay_on_disconnect = 0; dal_irq_setup_hpd_filter(hpd, &config); dal_gpio_close(hpd); } else { ASSERT_CRITICAL(false); } /* Release HPD handle */ dal_gpio_destroy_irq(&hpd); } } uint32_t dc_bandwidth_in_kbps_from_timing( const struct dc_crtc_timing *timing) { uint32_t bits_per_channel = 0; uint32_t kbps; #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (timing->flags.DSC) { kbps = (timing->pix_clk_100hz * timing->dsc_cfg.bits_per_pixel); kbps = kbps / 160 + ((kbps % 160) ? 1 : 0); return kbps; } #endif switch (timing->display_color_depth) { case COLOR_DEPTH_666: bits_per_channel = 6; break; case COLOR_DEPTH_888: bits_per_channel = 8; break; case COLOR_DEPTH_101010: bits_per_channel = 10; break; case COLOR_DEPTH_121212: bits_per_channel = 12; break; case COLOR_DEPTH_141414: bits_per_channel = 14; break; case COLOR_DEPTH_161616: bits_per_channel = 16; break; default: break; } ASSERT(bits_per_channel != 0); kbps = timing->pix_clk_100hz / 10; kbps *= bits_per_channel; if (timing->flags.Y_ONLY != 1) { /*Only YOnly make reduce bandwidth by 1/3 compares to RGB*/ kbps *= 3; if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) kbps /= 2; else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) kbps = kbps * 2 / 3; } return kbps; } void dc_link_set_drive_settings(struct dc *dc, struct link_training_settings *lt_settings, const struct dc_link *link) { int i; for (i = 0; i < dc->link_count; i++) { if (dc->links[i] == link) break; } if (i >= dc->link_count) ASSERT_CRITICAL(false); dc_link_dp_set_drive_settings(dc->links[i], lt_settings); } void dc_link_perform_link_training(struct dc *dc, struct dc_link_settings *link_setting, bool skip_video_pattern) { int i; for (i = 0; i < dc->link_count; i++) dc_link_dp_perform_link_training( dc->links[i], link_setting, skip_video_pattern); } void dc_link_set_preferred_link_settings(struct dc *dc, struct dc_link_settings *link_setting, struct dc_link *link) { int i; struct pipe_ctx *pipe; struct dc_stream_state *link_stream; struct dc_link_settings store_settings = *link_setting; link->preferred_link_setting = store_settings; /* Retrain with preferred link settings only relevant for * DP signal type * Check for non-DP signal or if passive dongle present */ if (!dc_is_dp_signal(link->connector_signal) || link->dongle_max_pix_clk > 0) return; for (i = 0; i < MAX_PIPES; i++) { pipe = &dc->current_state->res_ctx.pipe_ctx[i]; if (pipe->stream && pipe->stream->link) { if (pipe->stream->link == link) { link_stream = pipe->stream; break; } } } /* Stream not found */ if (i == MAX_PIPES) return; /* Cannot retrain link if backend is off */ if (link_stream->dpms_off) return; decide_link_settings(link_stream, &store_settings); if ((store_settings.lane_count != LANE_COUNT_UNKNOWN) && (store_settings.link_rate != LINK_RATE_UNKNOWN)) dp_retrain_link_dp_test(link, &store_settings, false); } 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) { if (lt_overrides != NULL) link->preferred_training_settings = *lt_overrides; else memset(&link->preferred_training_settings, 0, sizeof(link->preferred_training_settings)); if (link_setting != NULL) { link->preferred_link_setting = *link_setting; } else { link->preferred_link_setting.lane_count = LANE_COUNT_UNKNOWN; link->preferred_link_setting.link_rate = LINK_RATE_UNKNOWN; } /* Retrain now, or wait until next stream update to apply */ if (skip_immediate_retrain == false) dc_link_set_preferred_link_settings(dc, &link->preferred_link_setting, link); } void dc_link_enable_hpd(const struct dc_link *link) { dc_link_dp_enable_hpd(link); } void dc_link_disable_hpd(const struct dc_link *link) { dc_link_dp_disable_hpd(link); } void dc_link_set_test_pattern(struct dc_link *link, enum dp_test_pattern test_pattern, const struct link_training_settings *p_link_settings, const unsigned char *p_custom_pattern, unsigned int cust_pattern_size) { if (link != NULL) dc_link_dp_set_test_pattern( link, test_pattern, p_link_settings, p_custom_pattern, cust_pattern_size); } uint32_t dc_link_bandwidth_kbps( const struct dc_link *link, const struct dc_link_settings *link_setting) { uint32_t link_bw_kbps = link_setting->link_rate * LINK_RATE_REF_FREQ_IN_KHZ; /* bytes per sec */ link_bw_kbps *= 8; /* 8 bits per byte*/ link_bw_kbps *= link_setting->lane_count; #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (link->dpcd_caps.fec_cap.bits.FEC_CAPABLE) { /* Account for FEC overhead. * We have to do it based on caps, * and not based on FEC being set ready, * because FEC is set ready too late in * the process to correctly be picked up * by mode enumeration. * * There's enough zeros at the end of 'kbps' * that make the below operation 100% precise * for our purposes. * 'long long' makes it work even for HDMI 2.1 * max bandwidth (and much, much bigger bandwidths * than that, actually). * * NOTE: Reducing link BW by 3% may not be precise * because it may be a stream BT that increases by 3%, and so * 1/1.03 = 0.970873 factor should have been used instead, * but the difference is minimal and is in a safe direction, * which all works well around potential ambiguity of DP 1.4a spec. */ link_bw_kbps = mul_u64_u32_shr(BIT_ULL(32) * 970LL / 1000, link_bw_kbps, 32); } #endif return link_bw_kbps; } const struct dc_link_settings *dc_link_get_link_cap( const struct dc_link *link) { if (link->preferred_link_setting.lane_count != LANE_COUNT_UNKNOWN && link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN) return &link->preferred_link_setting; return &link->verified_link_cap; }
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