| /* | |
| * Copyright 2016 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 "dc.h" | |
| #include "mod_freesync.h" | |
| #include "core_types.h" | |
| #define MOD_FREESYNC_MAX_CONCURRENT_STREAMS 32 | |
| #define MIN_REFRESH_RANGE 10 | |
| /* Refresh rate ramp at a fixed rate of 65 Hz/second */ | |
| #define STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME ((1000 / 60) * 65) | |
| /* Number of elements in the render times cache array */ | |
| #define RENDER_TIMES_MAX_COUNT 10 | |
| /* Threshold to exit/exit BTR (to avoid frequent enter-exits at the lower limit) */ | |
| #define BTR_MAX_MARGIN 2500 | |
| /* Threshold to change BTR multiplier (to avoid frequent changes) */ | |
| #define BTR_DRIFT_MARGIN 2000 | |
| /* Threshold to exit fixed refresh rate */ | |
| #define FIXED_REFRESH_EXIT_MARGIN_IN_HZ 1 | |
| /* Number of consecutive frames to check before entering/exiting fixed refresh */ | |
| #define FIXED_REFRESH_ENTER_FRAME_COUNT 5 | |
| #define FIXED_REFRESH_EXIT_FRAME_COUNT 10 | |
| struct core_freesync { | |
| struct mod_freesync public; | |
| struct dc *dc; | |
| }; | |
| #define MOD_FREESYNC_TO_CORE(mod_freesync)\ | |
| container_of(mod_freesync, struct core_freesync, public) | |
| struct mod_freesync *mod_freesync_create(struct dc *dc) | |
| { | |
| struct core_freesync *core_freesync = | |
| kzalloc(sizeof(struct core_freesync), GFP_KERNEL); | |
| if (core_freesync == NULL) | |
| goto fail_alloc_context; | |
| if (dc == NULL) | |
| goto fail_construct; | |
| core_freesync->dc = dc; | |
| return &core_freesync->public; | |
| fail_construct: | |
| kfree(core_freesync); | |
| fail_alloc_context: | |
| return NULL; | |
| } | |
| void mod_freesync_destroy(struct mod_freesync *mod_freesync) | |
| { | |
| struct core_freesync *core_freesync = NULL; | |
| if (mod_freesync == NULL) | |
| return; | |
| core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync); | |
| kfree(core_freesync); | |
| } | |
| #if 0 /* Unused currently */ | |
| static unsigned int calc_refresh_in_uhz_from_duration( | |
| unsigned int duration_in_ns) | |
| { | |
| unsigned int refresh_in_uhz = | |
| ((unsigned int)(div64_u64((1000000000ULL * 1000000), | |
| duration_in_ns))); | |
| return refresh_in_uhz; | |
| } | |
| #endif | |
| static unsigned int calc_duration_in_us_from_refresh_in_uhz( | |
| unsigned int refresh_in_uhz) | |
| { | |
| unsigned int duration_in_us = | |
| ((unsigned int)(div64_u64((1000000000ULL * 1000), | |
| refresh_in_uhz))); | |
| return duration_in_us; | |
| } | |
| static unsigned int calc_duration_in_us_from_v_total( | |
| const struct dc_stream_state *stream, | |
| const struct mod_vrr_params *in_vrr, | |
| unsigned int v_total) | |
| { | |
| unsigned int duration_in_us = | |
| (unsigned int)(div64_u64(((unsigned long long)(v_total) | |
| * 10000) * stream->timing.h_total, | |
| stream->timing.pix_clk_100hz)); | |
| return duration_in_us; | |
| } | |
| static unsigned int calc_v_total_from_refresh( | |
| const struct dc_stream_state *stream, | |
| unsigned int refresh_in_uhz) | |
| { | |
| unsigned int v_total; | |
| unsigned int frame_duration_in_ns; | |
| frame_duration_in_ns = | |
| ((unsigned int)(div64_u64((1000000000ULL * 1000000), | |
| refresh_in_uhz))); | |
| v_total = div64_u64(div64_u64(((unsigned long long)( | |
| frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)), | |
| stream->timing.h_total), 1000000); | |
| /* v_total cannot be less than nominal */ | |
| if (v_total < stream->timing.v_total) { | |
| ASSERT(v_total < stream->timing.v_total); | |
| v_total = stream->timing.v_total; | |
| } | |
| return v_total; | |
| } | |
| static unsigned int calc_v_total_from_duration( | |
| const struct dc_stream_state *stream, | |
| const struct mod_vrr_params *vrr, | |
| unsigned int duration_in_us) | |
| { | |
| unsigned int v_total = 0; | |
| if (duration_in_us < vrr->min_duration_in_us) | |
| duration_in_us = vrr->min_duration_in_us; | |
| if (duration_in_us > vrr->max_duration_in_us) | |
| duration_in_us = vrr->max_duration_in_us; | |
| v_total = div64_u64(div64_u64(((unsigned long long)( | |
| duration_in_us) * (stream->timing.pix_clk_100hz / 10)), | |
| stream->timing.h_total), 1000); | |
| /* v_total cannot be less than nominal */ | |
| if (v_total < stream->timing.v_total) { | |
| ASSERT(v_total < stream->timing.v_total); | |
| v_total = stream->timing.v_total; | |
| } | |
| return v_total; | |
| } | |
| static void update_v_total_for_static_ramp( | |
| struct core_freesync *core_freesync, | |
| const struct dc_stream_state *stream, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| unsigned int v_total = 0; | |
| unsigned int current_duration_in_us = | |
| calc_duration_in_us_from_v_total( | |
| stream, in_out_vrr, | |
| in_out_vrr->adjust.v_total_max); | |
| unsigned int target_duration_in_us = | |
| calc_duration_in_us_from_refresh_in_uhz( | |
| in_out_vrr->fixed.target_refresh_in_uhz); | |
| bool ramp_direction_is_up = (current_duration_in_us > | |
| target_duration_in_us) ? true : false; | |
| /* Calculate ratio between new and current frame duration with 3 digit */ | |
| unsigned int frame_duration_ratio = div64_u64(1000000, | |
| (1000 + div64_u64(((unsigned long long)( | |
| STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME) * | |
| current_duration_in_us), | |
| 1000000))); | |
| /* Calculate delta between new and current frame duration in us */ | |
| unsigned int frame_duration_delta = div64_u64(((unsigned long long)( | |
| current_duration_in_us) * | |
| (1000 - frame_duration_ratio)), 1000); | |
| /* Adjust frame duration delta based on ratio between current and | |
| * standard frame duration (frame duration at 60 Hz refresh rate). | |
| */ | |
| unsigned int ramp_rate_interpolated = div64_u64(((unsigned long long)( | |
| frame_duration_delta) * current_duration_in_us), 16666); | |
| /* Going to a higher refresh rate (lower frame duration) */ | |
| if (ramp_direction_is_up) { | |
| /* Reduce frame duration */ | |
| current_duration_in_us -= ramp_rate_interpolated; | |
| /* Adjust for frame duration below min */ | |
| if (current_duration_in_us <= target_duration_in_us) { | |
| in_out_vrr->fixed.ramping_active = false; | |
| in_out_vrr->fixed.ramping_done = true; | |
| current_duration_in_us = | |
| calc_duration_in_us_from_refresh_in_uhz( | |
| in_out_vrr->fixed.target_refresh_in_uhz); | |
| } | |
| /* Going to a lower refresh rate (larger frame duration) */ | |
| } else { | |
| /* Increase frame duration */ | |
| current_duration_in_us += ramp_rate_interpolated; | |
| /* Adjust for frame duration above max */ | |
| if (current_duration_in_us >= target_duration_in_us) { | |
| in_out_vrr->fixed.ramping_active = false; | |
| in_out_vrr->fixed.ramping_done = true; | |
| current_duration_in_us = | |
| calc_duration_in_us_from_refresh_in_uhz( | |
| in_out_vrr->fixed.target_refresh_in_uhz); | |
| } | |
| } | |
| v_total = div64_u64(div64_u64(((unsigned long long)( | |
| current_duration_in_us) * (stream->timing.pix_clk_100hz / 10)), | |
| stream->timing.h_total), 1000); | |
| /* v_total cannot be less than nominal */ | |
| if (v_total < stream->timing.v_total) | |
| v_total = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_min = v_total; | |
| in_out_vrr->adjust.v_total_max = v_total; | |
| } | |
| static void apply_below_the_range(struct core_freesync *core_freesync, | |
| const struct dc_stream_state *stream, | |
| unsigned int last_render_time_in_us, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| unsigned int inserted_frame_duration_in_us = 0; | |
| unsigned int mid_point_frames_ceil = 0; | |
| unsigned int mid_point_frames_floor = 0; | |
| unsigned int frame_time_in_us = 0; | |
| unsigned int delta_from_mid_point_in_us_1 = 0xFFFFFFFF; | |
| unsigned int delta_from_mid_point_in_us_2 = 0xFFFFFFFF; | |
| unsigned int frames_to_insert = 0; | |
| unsigned int delta_from_mid_point_delta_in_us; | |
| unsigned int max_render_time_in_us = | |
| in_out_vrr->max_duration_in_us - in_out_vrr->btr.margin_in_us; | |
| /* Program BTR */ | |
| if ((last_render_time_in_us + in_out_vrr->btr.margin_in_us / 2) < max_render_time_in_us) { | |
| /* Exit Below the Range */ | |
| if (in_out_vrr->btr.btr_active) { | |
| in_out_vrr->btr.frame_counter = 0; | |
| in_out_vrr->btr.btr_active = false; | |
| } | |
| } else if (last_render_time_in_us > (max_render_time_in_us + in_out_vrr->btr.margin_in_us / 2)) { | |
| /* Enter Below the Range */ | |
| if (!in_out_vrr->btr.btr_active) { | |
| in_out_vrr->btr.btr_active = true; | |
| } | |
| } | |
| /* BTR set to "not active" so disengage */ | |
| if (!in_out_vrr->btr.btr_active) { | |
| in_out_vrr->btr.inserted_duration_in_us = 0; | |
| in_out_vrr->btr.frames_to_insert = 0; | |
| in_out_vrr->btr.frame_counter = 0; | |
| /* Restore FreeSync */ | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->max_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->min_refresh_in_uhz); | |
| /* BTR set to "active" so engage */ | |
| } else { | |
| /* Calculate number of midPoint frames that could fit within | |
| * the render time interval - take ceil of this value | |
| */ | |
| mid_point_frames_ceil = (last_render_time_in_us + | |
| in_out_vrr->btr.mid_point_in_us - 1) / | |
| in_out_vrr->btr.mid_point_in_us; | |
| if (mid_point_frames_ceil > 0) { | |
| frame_time_in_us = last_render_time_in_us / | |
| mid_point_frames_ceil; | |
| delta_from_mid_point_in_us_1 = | |
| (in_out_vrr->btr.mid_point_in_us > | |
| frame_time_in_us) ? | |
| (in_out_vrr->btr.mid_point_in_us - frame_time_in_us) : | |
| (frame_time_in_us - in_out_vrr->btr.mid_point_in_us); | |
| } | |
| /* Calculate number of midPoint frames that could fit within | |
| * the render time interval - take floor of this value | |
| */ | |
| mid_point_frames_floor = last_render_time_in_us / | |
| in_out_vrr->btr.mid_point_in_us; | |
| if (mid_point_frames_floor > 0) { | |
| frame_time_in_us = last_render_time_in_us / | |
| mid_point_frames_floor; | |
| delta_from_mid_point_in_us_2 = | |
| (in_out_vrr->btr.mid_point_in_us > | |
| frame_time_in_us) ? | |
| (in_out_vrr->btr.mid_point_in_us - frame_time_in_us) : | |
| (frame_time_in_us - in_out_vrr->btr.mid_point_in_us); | |
| } | |
| /* Choose number of frames to insert based on how close it | |
| * can get to the mid point of the variable range. | |
| * - Delta for CEIL: delta_from_mid_point_in_us_1 | |
| * - Delta for FLOOR: delta_from_mid_point_in_us_2 | |
| */ | |
| if ((last_render_time_in_us / mid_point_frames_ceil) < in_out_vrr->min_duration_in_us) { | |
| /* Check for out of range. | |
| * If using CEIL produces a value that is out of range, | |
| * then we are forced to use FLOOR. | |
| */ | |
| frames_to_insert = mid_point_frames_floor; | |
| } else if (mid_point_frames_floor < 2) { | |
| /* Check if FLOOR would result in non-LFC. In this case | |
| * choose to use CEIL | |
| */ | |
| frames_to_insert = mid_point_frames_ceil; | |
| } else if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) { | |
| /* If choosing CEIL results in a frame duration that is | |
| * closer to the mid point of the range. | |
| * Choose CEIL | |
| */ | |
| frames_to_insert = mid_point_frames_ceil; | |
| } else { | |
| /* If choosing FLOOR results in a frame duration that is | |
| * closer to the mid point of the range. | |
| * Choose FLOOR | |
| */ | |
| frames_to_insert = mid_point_frames_floor; | |
| } | |
| /* Prefer current frame multiplier when BTR is enabled unless it drifts | |
| * too far from the midpoint | |
| */ | |
| if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) { | |
| delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_2 - | |
| delta_from_mid_point_in_us_1; | |
| } else { | |
| delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_1 - | |
| delta_from_mid_point_in_us_2; | |
| } | |
| if (in_out_vrr->btr.frames_to_insert != 0 && | |
| delta_from_mid_point_delta_in_us < BTR_DRIFT_MARGIN) { | |
| if (((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) < | |
| max_render_time_in_us) && | |
| ((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) > | |
| in_out_vrr->min_duration_in_us)) | |
| frames_to_insert = in_out_vrr->btr.frames_to_insert; | |
| } | |
| /* Either we've calculated the number of frames to insert, | |
| * or we need to insert min duration frames | |
| */ | |
| if (last_render_time_in_us / frames_to_insert < | |
| in_out_vrr->min_duration_in_us){ | |
| frames_to_insert -= (frames_to_insert > 1) ? | |
| 1 : 0; | |
| } | |
| if (frames_to_insert > 0) | |
| inserted_frame_duration_in_us = last_render_time_in_us / | |
| frames_to_insert; | |
| if (inserted_frame_duration_in_us < in_out_vrr->min_duration_in_us) | |
| inserted_frame_duration_in_us = in_out_vrr->min_duration_in_us; | |
| /* Cache the calculated variables */ | |
| in_out_vrr->btr.inserted_duration_in_us = | |
| inserted_frame_duration_in_us; | |
| in_out_vrr->btr.frames_to_insert = frames_to_insert; | |
| in_out_vrr->btr.frame_counter = frames_to_insert; | |
| } | |
| } | |
| static void apply_fixed_refresh(struct core_freesync *core_freesync, | |
| const struct dc_stream_state *stream, | |
| unsigned int last_render_time_in_us, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| bool update = false; | |
| unsigned int max_render_time_in_us = in_out_vrr->max_duration_in_us; | |
| /* Compute the exit refresh rate and exit frame duration */ | |
| unsigned int exit_refresh_rate_in_milli_hz = ((1000000000/max_render_time_in_us) | |
| + (1000*FIXED_REFRESH_EXIT_MARGIN_IN_HZ)); | |
| unsigned int exit_frame_duration_in_us = 1000000000/exit_refresh_rate_in_milli_hz; | |
| if (last_render_time_in_us < exit_frame_duration_in_us) { | |
| /* Exit Fixed Refresh mode */ | |
| if (in_out_vrr->fixed.fixed_active) { | |
| in_out_vrr->fixed.frame_counter++; | |
| if (in_out_vrr->fixed.frame_counter > | |
| FIXED_REFRESH_EXIT_FRAME_COUNT) { | |
| in_out_vrr->fixed.frame_counter = 0; | |
| in_out_vrr->fixed.fixed_active = false; | |
| in_out_vrr->fixed.target_refresh_in_uhz = 0; | |
| update = true; | |
| } | |
| } else | |
| in_out_vrr->fixed.frame_counter = 0; | |
| } else if (last_render_time_in_us > max_render_time_in_us) { | |
| /* Enter Fixed Refresh mode */ | |
| if (!in_out_vrr->fixed.fixed_active) { | |
| in_out_vrr->fixed.frame_counter++; | |
| if (in_out_vrr->fixed.frame_counter > | |
| FIXED_REFRESH_ENTER_FRAME_COUNT) { | |
| in_out_vrr->fixed.frame_counter = 0; | |
| in_out_vrr->fixed.fixed_active = true; | |
| in_out_vrr->fixed.target_refresh_in_uhz = | |
| in_out_vrr->max_refresh_in_uhz; | |
| update = true; | |
| } | |
| } else | |
| in_out_vrr->fixed.frame_counter = 0; | |
| } | |
| if (update) { | |
| if (in_out_vrr->fixed.fixed_active) { | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh( | |
| stream, in_out_vrr->max_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| in_out_vrr->adjust.v_total_min; | |
| } else { | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->max_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->min_refresh_in_uhz); | |
| } | |
| } | |
| } | |
| static bool vrr_settings_require_update(struct core_freesync *core_freesync, | |
| struct mod_freesync_config *in_config, | |
| unsigned int min_refresh_in_uhz, | |
| unsigned int max_refresh_in_uhz, | |
| struct mod_vrr_params *in_vrr) | |
| { | |
| if (in_vrr->state != in_config->state) { | |
| return true; | |
| } else if (in_vrr->state == VRR_STATE_ACTIVE_FIXED && | |
| in_vrr->fixed.target_refresh_in_uhz != | |
| in_config->fixed_refresh_in_uhz) { | |
| return true; | |
| } else if (in_vrr->min_refresh_in_uhz != min_refresh_in_uhz) { | |
| return true; | |
| } else if (in_vrr->max_refresh_in_uhz != max_refresh_in_uhz) { | |
| return true; | |
| } | |
| return false; | |
| } | |
| bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync, | |
| const struct dc_stream_state *stream, | |
| unsigned int *vmin, | |
| unsigned int *vmax) | |
| { | |
| *vmin = stream->adjust.v_total_min; | |
| *vmax = stream->adjust.v_total_max; | |
| return true; | |
| } | |
| bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync, | |
| struct dc_stream_state *stream, | |
| unsigned int *nom_v_pos, | |
| unsigned int *v_pos) | |
| { | |
| struct core_freesync *core_freesync = NULL; | |
| struct crtc_position position; | |
| if (mod_freesync == NULL) | |
| return false; | |
| core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync); | |
| if (dc_stream_get_crtc_position(core_freesync->dc, &stream, 1, | |
| &position.vertical_count, | |
| &position.nominal_vcount)) { | |
| *nom_v_pos = position.nominal_vcount; | |
| *v_pos = position.vertical_count; | |
| return true; | |
| } | |
| return false; | |
| } | |
| static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr, | |
| struct dc_info_packet *infopacket) | |
| { | |
| /* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */ | |
| infopacket->sb[1] = 0x1A; | |
| /* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */ | |
| infopacket->sb[2] = 0x00; | |
| /* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */ | |
| infopacket->sb[3] = 0x00; | |
| /* PB4 = Reserved */ | |
| /* PB5 = Reserved */ | |
| /* PB6 = [Bits 7:3 = Reserved] */ | |
| /* PB6 = [Bit 0 = FreeSync Supported] */ | |
| if (vrr->state != VRR_STATE_UNSUPPORTED) | |
| infopacket->sb[6] |= 0x01; | |
| /* PB6 = [Bit 1 = FreeSync Enabled] */ | |
| if (vrr->state != VRR_STATE_DISABLED && | |
| vrr->state != VRR_STATE_UNSUPPORTED) | |
| infopacket->sb[6] |= 0x02; | |
| /* PB6 = [Bit 2 = FreeSync Active] */ | |
| if (vrr->state == VRR_STATE_ACTIVE_VARIABLE || | |
| vrr->state == VRR_STATE_ACTIVE_FIXED) | |
| infopacket->sb[6] |= 0x04; | |
| // For v1 & 2 infoframes program nominal if non-fs mode, otherwise full range | |
| /* PB7 = FreeSync Minimum refresh rate (Hz) */ | |
| if (vrr->state == VRR_STATE_ACTIVE_VARIABLE || | |
| vrr->state == VRR_STATE_ACTIVE_FIXED) { | |
| infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000); | |
| } else { | |
| infopacket->sb[7] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000); | |
| } | |
| /* PB8 = FreeSync Maximum refresh rate (Hz) | |
| * Note: We should never go above the field rate of the mode timing set. | |
| */ | |
| infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000); | |
| /* FreeSync HDR */ | |
| infopacket->sb[9] = 0; | |
| infopacket->sb[10] = 0; | |
| } | |
| static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr, | |
| struct dc_info_packet *infopacket) | |
| { | |
| unsigned int min_refresh; | |
| unsigned int max_refresh; | |
| unsigned int fixed_refresh; | |
| unsigned int min_programmed; | |
| unsigned int max_programmed; | |
| /* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */ | |
| infopacket->sb[1] = 0x1A; | |
| /* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */ | |
| infopacket->sb[2] = 0x00; | |
| /* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */ | |
| infopacket->sb[3] = 0x00; | |
| /* PB4 = Reserved */ | |
| /* PB5 = Reserved */ | |
| /* PB6 = [Bits 7:3 = Reserved] */ | |
| /* PB6 = [Bit 0 = FreeSync Supported] */ | |
| if (vrr->state != VRR_STATE_UNSUPPORTED) | |
| infopacket->sb[6] |= 0x01; | |
| /* PB6 = [Bit 1 = FreeSync Enabled] */ | |
| if (vrr->state != VRR_STATE_DISABLED && | |
| vrr->state != VRR_STATE_UNSUPPORTED) | |
| infopacket->sb[6] |= 0x02; | |
| /* PB6 = [Bit 2 = FreeSync Active] */ | |
| if (vrr->state == VRR_STATE_ACTIVE_VARIABLE || | |
| vrr->state == VRR_STATE_ACTIVE_FIXED) | |
| infopacket->sb[6] |= 0x04; | |
| min_refresh = (vrr->min_refresh_in_uhz + 500000) / 1000000; | |
| max_refresh = (vrr->max_refresh_in_uhz + 500000) / 1000000; | |
| fixed_refresh = (vrr->fixed_refresh_in_uhz + 500000) / 1000000; | |
| min_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh : | |
| (vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? min_refresh : | |
| (vrr->state == VRR_STATE_INACTIVE) ? min_refresh : | |
| max_refresh; // Non-fs case, program nominal range | |
| max_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh : | |
| (vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? max_refresh : | |
| max_refresh;// Non-fs case, program nominal range | |
| /* PB7 = FreeSync Minimum refresh rate (Hz) */ | |
| infopacket->sb[7] = min_programmed & 0xFF; | |
| /* PB8 = FreeSync Maximum refresh rate (Hz) */ | |
| infopacket->sb[8] = max_programmed & 0xFF; | |
| /* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 9:8 */ | |
| infopacket->sb[11] = (min_programmed >> 8) & 0x03; | |
| /* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 9:8 */ | |
| infopacket->sb[12] = (max_programmed >> 8) & 0x03; | |
| /* PB16 : Reserved bits 7:1, FixedRate bit 0 */ | |
| infopacket->sb[16] = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? 1 : 0; | |
| //FreeSync HDR | |
| infopacket->sb[9] = 0; | |
| infopacket->sb[10] = 0; | |
| } | |
| static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf, | |
| struct dc_info_packet *infopacket) | |
| { | |
| if (app_tf != TRANSFER_FUNC_UNKNOWN) { | |
| infopacket->valid = true; | |
| infopacket->sb[6] |= 0x08; // PB6 = [Bit 3 = Native Color Active] | |
| if (app_tf == TRANSFER_FUNC_GAMMA_22) { | |
| infopacket->sb[9] |= 0x04; // PB6 = [Bit 2 = Gamma 2.2 EOTF Active] | |
| } | |
| } | |
| } | |
| static void build_vrr_infopacket_header_v1(enum signal_type signal, | |
| struct dc_info_packet *infopacket, | |
| unsigned int *payload_size) | |
| { | |
| if (dc_is_hdmi_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB1 = Version = 0x01 */ | |
| infopacket->hb1 = 0x01; | |
| /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x08] */ | |
| infopacket->hb2 = 0x08; | |
| *payload_size = 0x08; | |
| } else if (dc_is_dp_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Secondary-data Packet ID = 0 - Only non-zero | |
| * when used to associate audio related info packets | |
| */ | |
| infopacket->hb0 = 0x00; | |
| /* HB1 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB2 = [Bits 7:0 = Least significant eight bits - | |
| * For INFOFRAME, the value must be 1Bh] | |
| */ | |
| infopacket->hb2 = 0x1B; | |
| /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x1] | |
| * [Bits 1:0 = Most significant two bits = 0x00] | |
| */ | |
| infopacket->hb3 = 0x04; | |
| *payload_size = 0x1B; | |
| } | |
| } | |
| static void build_vrr_infopacket_header_v2(enum signal_type signal, | |
| struct dc_info_packet *infopacket, | |
| unsigned int *payload_size) | |
| { | |
| if (dc_is_hdmi_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB1 = Version = 0x02 */ | |
| infopacket->hb1 = 0x02; | |
| /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x09] */ | |
| infopacket->hb2 = 0x09; | |
| *payload_size = 0x0A; | |
| } else if (dc_is_dp_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Secondary-data Packet ID = 0 - Only non-zero | |
| * when used to associate audio related info packets | |
| */ | |
| infopacket->hb0 = 0x00; | |
| /* HB1 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB2 = [Bits 7:0 = Least significant eight bits - | |
| * For INFOFRAME, the value must be 1Bh] | |
| */ | |
| infopacket->hb2 = 0x1B; | |
| /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2] | |
| * [Bits 1:0 = Most significant two bits = 0x00] | |
| */ | |
| infopacket->hb3 = 0x08; | |
| *payload_size = 0x1B; | |
| } | |
| } | |
| static void build_vrr_infopacket_header_v3(enum signal_type signal, | |
| struct dc_info_packet *infopacket, | |
| unsigned int *payload_size) | |
| { | |
| unsigned char version; | |
| version = 3; | |
| if (dc_is_hdmi_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB1 = Version = 0x03 */ | |
| infopacket->hb1 = version; | |
| /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length] */ | |
| *payload_size = 0x10; | |
| infopacket->hb2 = *payload_size - 1; //-1 for checksum | |
| } else if (dc_is_dp_signal(signal)) { | |
| /* HEADER */ | |
| /* HB0 = Secondary-data Packet ID = 0 - Only non-zero | |
| * when used to associate audio related info packets | |
| */ | |
| infopacket->hb0 = 0x00; | |
| /* HB1 = Packet Type = 0x83 (Source Product | |
| * Descriptor InfoFrame) | |
| */ | |
| infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD; | |
| /* HB2 = [Bits 7:0 = Least significant eight bits - | |
| * For INFOFRAME, the value must be 1Bh] | |
| */ | |
| infopacket->hb2 = 0x1B; | |
| /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2] | |
| * [Bits 1:0 = Most significant two bits = 0x00] | |
| */ | |
| infopacket->hb3 = (version & 0x3F) << 2; | |
| *payload_size = 0x1B; | |
| } | |
| } | |
| static void build_vrr_infopacket_checksum(unsigned int *payload_size, | |
| struct dc_info_packet *infopacket) | |
| { | |
| /* Calculate checksum */ | |
| unsigned int idx = 0; | |
| unsigned char checksum = 0; | |
| checksum += infopacket->hb0; | |
| checksum += infopacket->hb1; | |
| checksum += infopacket->hb2; | |
| checksum += infopacket->hb3; | |
| for (idx = 1; idx <= *payload_size; idx++) | |
| checksum += infopacket->sb[idx]; | |
| /* PB0 = Checksum (one byte complement) */ | |
| infopacket->sb[0] = (unsigned char)(0x100 - checksum); | |
| infopacket->valid = true; | |
| } | |
| static void build_vrr_infopacket_v1(enum signal_type signal, | |
| const struct mod_vrr_params *vrr, | |
| struct dc_info_packet *infopacket) | |
| { | |
| /* SPD info packet for FreeSync */ | |
| unsigned int payload_size = 0; | |
| build_vrr_infopacket_header_v1(signal, infopacket, &payload_size); | |
| build_vrr_infopacket_data_v1(vrr, infopacket); | |
| build_vrr_infopacket_checksum(&payload_size, infopacket); | |
| infopacket->valid = true; | |
| } | |
| static void build_vrr_infopacket_v2(enum signal_type signal, | |
| const struct mod_vrr_params *vrr, | |
| enum color_transfer_func app_tf, | |
| struct dc_info_packet *infopacket) | |
| { | |
| unsigned int payload_size = 0; | |
| build_vrr_infopacket_header_v2(signal, infopacket, &payload_size); | |
| build_vrr_infopacket_data_v1(vrr, infopacket); | |
| build_vrr_infopacket_fs2_data(app_tf, infopacket); | |
| build_vrr_infopacket_checksum(&payload_size, infopacket); | |
| infopacket->valid = true; | |
| } | |
| #ifndef TRIM_FSFT | |
| static void build_vrr_infopacket_fast_transport_data( | |
| bool ftActive, | |
| unsigned int ftOutputRate, | |
| struct dc_info_packet *infopacket) | |
| { | |
| /* PB9 : bit7 - fast transport Active*/ | |
| unsigned char activeBit = (ftActive) ? 1 << 7 : 0; | |
| infopacket->sb[1] &= ~activeBit; //clear bit | |
| infopacket->sb[1] |= activeBit; //set bit | |
| /* PB13 : Target Output Pixel Rate [kHz] - bits 7:0 */ | |
| infopacket->sb[13] = ftOutputRate & 0xFF; | |
| /* PB14 : Target Output Pixel Rate [kHz] - bits 15:8 */ | |
| infopacket->sb[14] = (ftOutputRate >> 8) & 0xFF; | |
| /* PB15 : Target Output Pixel Rate [kHz] - bits 23:16 */ | |
| infopacket->sb[15] = (ftOutputRate >> 16) & 0xFF; | |
| } | |
| #endif | |
| static void build_vrr_infopacket_v3(enum signal_type signal, | |
| const struct mod_vrr_params *vrr, | |
| #ifndef TRIM_FSFT | |
| bool ftActive, unsigned int ftOutputRate, | |
| #endif | |
| enum color_transfer_func app_tf, | |
| struct dc_info_packet *infopacket) | |
| { | |
| unsigned int payload_size = 0; | |
| build_vrr_infopacket_header_v3(signal, infopacket, &payload_size); | |
| build_vrr_infopacket_data_v3(vrr, infopacket); | |
| build_vrr_infopacket_fs2_data(app_tf, infopacket); | |
| #ifndef TRIM_FSFT | |
| build_vrr_infopacket_fast_transport_data( | |
| ftActive, | |
| ftOutputRate, | |
| infopacket); | |
| #endif | |
| build_vrr_infopacket_checksum(&payload_size, infopacket); | |
| infopacket->valid = true; | |
| } | |
| void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync, | |
| const struct dc_stream_state *stream, | |
| const struct mod_vrr_params *vrr, | |
| enum vrr_packet_type packet_type, | |
| enum color_transfer_func app_tf, | |
| struct dc_info_packet *infopacket) | |
| { | |
| /* SPD info packet for FreeSync | |
| * VTEM info packet for HdmiVRR | |
| * Check if Freesync is supported. Return if false. If true, | |
| * set the corresponding bit in the info packet | |
| */ | |
| if (!vrr->send_info_frame) | |
| return; | |
| switch (packet_type) { | |
| case PACKET_TYPE_FS_V3: | |
| #ifndef TRIM_FSFT | |
| // always populate with pixel rate. | |
| build_vrr_infopacket_v3( | |
| stream->signal, vrr, | |
| stream->timing.flags.FAST_TRANSPORT, | |
| (stream->timing.flags.FAST_TRANSPORT) ? | |
| stream->timing.fast_transport_output_rate_100hz : | |
| stream->timing.pix_clk_100hz, | |
| app_tf, infopacket); | |
| #else | |
| build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket); | |
| #endif | |
| break; | |
| case PACKET_TYPE_FS_V2: | |
| build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket); | |
| break; | |
| case PACKET_TYPE_VRR: | |
| case PACKET_TYPE_FS_V1: | |
| default: | |
| build_vrr_infopacket_v1(stream->signal, vrr, infopacket); | |
| } | |
| } | |
| void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, | |
| const struct dc_stream_state *stream, | |
| struct mod_freesync_config *in_config, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| struct core_freesync *core_freesync = NULL; | |
| unsigned long long nominal_field_rate_in_uhz = 0; | |
| unsigned long long rounded_nominal_in_uhz = 0; | |
| unsigned int refresh_range = 0; | |
| unsigned long long min_refresh_in_uhz = 0; | |
| unsigned long long max_refresh_in_uhz = 0; | |
| if (mod_freesync == NULL) | |
| return; | |
| core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync); | |
| /* Calculate nominal field rate for stream */ | |
| nominal_field_rate_in_uhz = | |
| mod_freesync_calc_nominal_field_rate(stream); | |
| min_refresh_in_uhz = in_config->min_refresh_in_uhz; | |
| max_refresh_in_uhz = in_config->max_refresh_in_uhz; | |
| /* Full range may be larger than current video timing, so cap at nominal */ | |
| if (max_refresh_in_uhz > nominal_field_rate_in_uhz) | |
| max_refresh_in_uhz = nominal_field_rate_in_uhz; | |
| /* Full range may be larger than current video timing, so cap at nominal */ | |
| if (min_refresh_in_uhz > max_refresh_in_uhz) | |
| min_refresh_in_uhz = max_refresh_in_uhz; | |
| /* If a monitor reports exactly max refresh of 2x of min, enforce it on nominal */ | |
| rounded_nominal_in_uhz = | |
| div_u64(nominal_field_rate_in_uhz + 50000, 100000) * 100000; | |
| if (in_config->max_refresh_in_uhz == (2 * in_config->min_refresh_in_uhz) && | |
| in_config->max_refresh_in_uhz == rounded_nominal_in_uhz) | |
| min_refresh_in_uhz = div_u64(nominal_field_rate_in_uhz, 2); | |
| if (!vrr_settings_require_update(core_freesync, | |
| in_config, (unsigned int)min_refresh_in_uhz, (unsigned int)max_refresh_in_uhz, | |
| in_out_vrr)) | |
| return; | |
| in_out_vrr->state = in_config->state; | |
| in_out_vrr->send_info_frame = in_config->vsif_supported; | |
| if (in_config->state == VRR_STATE_UNSUPPORTED) { | |
| in_out_vrr->state = VRR_STATE_UNSUPPORTED; | |
| in_out_vrr->supported = false; | |
| in_out_vrr->adjust.v_total_min = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_max = stream->timing.v_total; | |
| return; | |
| } else { | |
| in_out_vrr->min_refresh_in_uhz = (unsigned int)min_refresh_in_uhz; | |
| in_out_vrr->max_duration_in_us = | |
| calc_duration_in_us_from_refresh_in_uhz( | |
| (unsigned int)min_refresh_in_uhz); | |
| in_out_vrr->max_refresh_in_uhz = (unsigned int)max_refresh_in_uhz; | |
| in_out_vrr->min_duration_in_us = | |
| calc_duration_in_us_from_refresh_in_uhz( | |
| (unsigned int)max_refresh_in_uhz); | |
| if (in_config->state == VRR_STATE_ACTIVE_FIXED) | |
| in_out_vrr->fixed_refresh_in_uhz = in_config->fixed_refresh_in_uhz; | |
| else | |
| in_out_vrr->fixed_refresh_in_uhz = 0; | |
| refresh_range = div_u64(in_out_vrr->max_refresh_in_uhz + 500000, 1000000) - | |
| + div_u64(in_out_vrr->min_refresh_in_uhz + 500000, 1000000); | |
| in_out_vrr->supported = true; | |
| } | |
| in_out_vrr->fixed.ramping_active = in_config->ramping; | |
| in_out_vrr->btr.btr_enabled = in_config->btr; | |
| if (in_out_vrr->max_refresh_in_uhz < (2 * in_out_vrr->min_refresh_in_uhz)) | |
| in_out_vrr->btr.btr_enabled = false; | |
| else { | |
| in_out_vrr->btr.margin_in_us = in_out_vrr->max_duration_in_us - | |
| 2 * in_out_vrr->min_duration_in_us; | |
| if (in_out_vrr->btr.margin_in_us > BTR_MAX_MARGIN) | |
| in_out_vrr->btr.margin_in_us = BTR_MAX_MARGIN; | |
| } | |
| in_out_vrr->btr.btr_active = false; | |
| in_out_vrr->btr.inserted_duration_in_us = 0; | |
| in_out_vrr->btr.frames_to_insert = 0; | |
| in_out_vrr->btr.frame_counter = 0; | |
| in_out_vrr->fixed.fixed_active = false; | |
| in_out_vrr->fixed.target_refresh_in_uhz = 0; | |
| in_out_vrr->btr.mid_point_in_us = | |
| (in_out_vrr->min_duration_in_us + | |
| in_out_vrr->max_duration_in_us) / 2; | |
| if (in_out_vrr->state == VRR_STATE_UNSUPPORTED) { | |
| in_out_vrr->adjust.v_total_min = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_max = stream->timing.v_total; | |
| } else if (in_out_vrr->state == VRR_STATE_DISABLED) { | |
| in_out_vrr->adjust.v_total_min = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_max = stream->timing.v_total; | |
| } else if (in_out_vrr->state == VRR_STATE_INACTIVE) { | |
| in_out_vrr->adjust.v_total_min = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_max = stream->timing.v_total; | |
| } else if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE && | |
| refresh_range >= MIN_REFRESH_RANGE) { | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->max_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->min_refresh_in_uhz); | |
| } else if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED) { | |
| in_out_vrr->fixed.target_refresh_in_uhz = | |
| in_out_vrr->fixed_refresh_in_uhz; | |
| if (in_out_vrr->fixed.ramping_active && | |
| in_out_vrr->fixed.fixed_active) { | |
| /* Do not update vtotals if ramping is already active | |
| * in order to continue ramp from current refresh. | |
| */ | |
| in_out_vrr->fixed.fixed_active = true; | |
| } else { | |
| in_out_vrr->fixed.fixed_active = true; | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->fixed.target_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| in_out_vrr->adjust.v_total_min; | |
| } | |
| } else { | |
| in_out_vrr->state = VRR_STATE_INACTIVE; | |
| in_out_vrr->adjust.v_total_min = stream->timing.v_total; | |
| in_out_vrr->adjust.v_total_max = stream->timing.v_total; | |
| } | |
| } | |
| void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync, | |
| const struct dc_plane_state *plane, | |
| const struct dc_stream_state *stream, | |
| unsigned int curr_time_stamp_in_us, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| struct core_freesync *core_freesync = NULL; | |
| unsigned int last_render_time_in_us = 0; | |
| unsigned int average_render_time_in_us = 0; | |
| if (mod_freesync == NULL) | |
| return; | |
| core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync); | |
| if (in_out_vrr->supported && | |
| in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE) { | |
| unsigned int i = 0; | |
| unsigned int oldest_index = plane->time.index + 1; | |
| if (oldest_index >= DC_PLANE_UPDATE_TIMES_MAX) | |
| oldest_index = 0; | |
| last_render_time_in_us = curr_time_stamp_in_us - | |
| plane->time.prev_update_time_in_us; | |
| /* Sum off all entries except oldest one */ | |
| for (i = 0; i < DC_PLANE_UPDATE_TIMES_MAX; i++) { | |
| average_render_time_in_us += | |
| plane->time.time_elapsed_in_us[i]; | |
| } | |
| average_render_time_in_us -= | |
| plane->time.time_elapsed_in_us[oldest_index]; | |
| /* Add render time for current flip */ | |
| average_render_time_in_us += last_render_time_in_us; | |
| average_render_time_in_us /= DC_PLANE_UPDATE_TIMES_MAX; | |
| if (in_out_vrr->btr.btr_enabled) { | |
| apply_below_the_range(core_freesync, | |
| stream, | |
| last_render_time_in_us, | |
| in_out_vrr); | |
| } else { | |
| apply_fixed_refresh(core_freesync, | |
| stream, | |
| last_render_time_in_us, | |
| in_out_vrr); | |
| } | |
| } | |
| } | |
| void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync, | |
| const struct dc_stream_state *stream, | |
| struct mod_vrr_params *in_out_vrr) | |
| { | |
| struct core_freesync *core_freesync = NULL; | |
| if ((mod_freesync == NULL) || (stream == NULL) || (in_out_vrr == NULL)) | |
| return; | |
| core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync); | |
| if (in_out_vrr->supported == false) | |
| return; | |
| /* Below the Range Logic */ | |
| /* Only execute if in fullscreen mode */ | |
| if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE && | |
| in_out_vrr->btr.btr_active) { | |
| /* TODO: pass in flag for Pre-DCE12 ASIC | |
| * in order for frame variable duration to take affect, | |
| * it needs to be done one VSYNC early, which is at | |
| * frameCounter == 1. | |
| * For DCE12 and newer updates to V_TOTAL_MIN/MAX | |
| * will take affect on current frame | |
| */ | |
| if (in_out_vrr->btr.frames_to_insert == | |
| in_out_vrr->btr.frame_counter) { | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_duration(stream, | |
| in_out_vrr, | |
| in_out_vrr->btr.inserted_duration_in_us); | |
| in_out_vrr->adjust.v_total_max = | |
| in_out_vrr->adjust.v_total_min; | |
| } | |
| if (in_out_vrr->btr.frame_counter > 0) | |
| in_out_vrr->btr.frame_counter--; | |
| /* Restore FreeSync */ | |
| if (in_out_vrr->btr.frame_counter == 0) { | |
| in_out_vrr->adjust.v_total_min = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->max_refresh_in_uhz); | |
| in_out_vrr->adjust.v_total_max = | |
| calc_v_total_from_refresh(stream, | |
| in_out_vrr->min_refresh_in_uhz); | |
| } | |
| } | |
| /* If in fullscreen freesync mode or in video, do not program | |
| * static screen ramp values | |
| */ | |
| if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE) | |
| in_out_vrr->fixed.ramping_active = false; | |
| /* Gradual Static Screen Ramping Logic | |
| * Execute if ramp is active and user enabled freesync static screen | |
| */ | |
| if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED && | |
| in_out_vrr->fixed.ramping_active) { | |
| update_v_total_for_static_ramp( | |
| core_freesync, stream, in_out_vrr); | |
| } | |
| } | |
| void mod_freesync_get_settings(struct mod_freesync *mod_freesync, | |
| const struct mod_vrr_params *vrr, | |
| unsigned int *v_total_min, unsigned int *v_total_max, | |
| unsigned int *event_triggers, | |
| unsigned int *window_min, unsigned int *window_max, | |
| unsigned int *lfc_mid_point_in_us, | |
| unsigned int *inserted_frames, | |
| unsigned int *inserted_duration_in_us) | |
| { | |
| if (mod_freesync == NULL) | |
| return; | |
| if (vrr->supported) { | |
| *v_total_min = vrr->adjust.v_total_min; | |
| *v_total_max = vrr->adjust.v_total_max; | |
| *event_triggers = 0; | |
| *lfc_mid_point_in_us = vrr->btr.mid_point_in_us; | |
| *inserted_frames = vrr->btr.frames_to_insert; | |
| *inserted_duration_in_us = vrr->btr.inserted_duration_in_us; | |
| } | |
| } | |
| unsigned long long mod_freesync_calc_nominal_field_rate( | |
| const struct dc_stream_state *stream) | |
| { | |
| unsigned long long nominal_field_rate_in_uhz = 0; | |
| unsigned int total = stream->timing.h_total * stream->timing.v_total; | |
| /* Calculate nominal field rate for stream, rounded up to nearest integer */ | |
| nominal_field_rate_in_uhz = stream->timing.pix_clk_100hz; | |
| nominal_field_rate_in_uhz *= 100000000ULL; | |
| nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz, total); | |
| return nominal_field_rate_in_uhz; | |
| } | |
| bool mod_freesync_is_valid_range(uint32_t min_refresh_cap_in_uhz, | |
| uint32_t max_refresh_cap_in_uhz, | |
| uint32_t nominal_field_rate_in_uhz) | |
| { | |
| /* Typically nominal refresh calculated can have some fractional part. | |
| * Allow for some rounding error of actual video timing by taking floor | |
| * of caps and request. Round the nominal refresh rate. | |
| * | |
| * Dividing will convert everything to units in Hz although input | |
| * variable name is in uHz! | |
| * | |
| * Also note, this takes care of rounding error on the nominal refresh | |
| * so by rounding error we only expect it to be off by a small amount, | |
| * such as < 0.1 Hz. i.e. 143.9xxx or 144.1xxx. | |
| * | |
| * Example 1. Caps Min = 40 Hz, Max = 144 Hz | |
| * Request Min = 40 Hz, Max = 144 Hz | |
| * Nominal = 143.5x Hz rounded to 144 Hz | |
| * This function should allow this as valid request | |
| * | |
| * Example 2. Caps Min = 40 Hz, Max = 144 Hz | |
| * Request Min = 40 Hz, Max = 144 Hz | |
| * Nominal = 144.4x Hz rounded to 144 Hz | |
| * This function should allow this as valid request | |
| * | |
| * Example 3. Caps Min = 40 Hz, Max = 144 Hz | |
| * Request Min = 40 Hz, Max = 144 Hz | |
| * Nominal = 120.xx Hz rounded to 120 Hz | |
| * This function should return NOT valid since the requested | |
| * max is greater than current timing's nominal | |
| * | |
| * Example 4. Caps Min = 40 Hz, Max = 120 Hz | |
| * Request Min = 40 Hz, Max = 120 Hz | |
| * Nominal = 144.xx Hz rounded to 144 Hz | |
| * This function should return NOT valid since the nominal | |
| * is greater than the capability's max refresh | |
| */ | |
| nominal_field_rate_in_uhz = | |
| div_u64(nominal_field_rate_in_uhz + 500000, 1000000); | |
| min_refresh_cap_in_uhz /= 1000000; | |
| max_refresh_cap_in_uhz /= 1000000; | |
| /* Check nominal is within range */ | |
| if (nominal_field_rate_in_uhz > max_refresh_cap_in_uhz || | |
| nominal_field_rate_in_uhz < min_refresh_cap_in_uhz) | |
| return false; | |
| /* If nominal is less than max, limit the max allowed refresh rate */ | |
| if (nominal_field_rate_in_uhz < max_refresh_cap_in_uhz) | |
| max_refresh_cap_in_uhz = nominal_field_rate_in_uhz; | |
| /* Check min is within range */ | |
| if (min_refresh_cap_in_uhz > max_refresh_cap_in_uhz) | |
| return false; | |
| /* For variable range, check for at least 10 Hz range */ | |
| if (nominal_field_rate_in_uhz - min_refresh_cap_in_uhz < 10) | |
| return false; | |
| return true; | |
| } | |