diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 250 |
1 files changed, 74 insertions, 176 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index 315da61ee897..1aae46d703ba 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -1,5 +1,5 @@ /* - * Copyright 2016 Advanced Micro Devices, Inc. + * Copyright 2016-2023 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"), @@ -48,6 +48,7 @@ #define VSYNCS_BETWEEN_FLIP_THRESHOLD 2 #define FREESYNC_CONSEC_FLIP_AFTER_VSYNC 5 #define FREESYNC_VSYNC_TO_FLIP_DELTA_IN_US 500 +#define MICRO_HZ_TO_HZ(x) (x / 1000000) struct core_freesync { struct mod_freesync public; @@ -81,6 +82,7 @@ fail_alloc_context: 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); @@ -120,6 +122,17 @@ static unsigned int calc_duration_in_us_from_v_total( return duration_in_us; } +static unsigned int calc_max_hardware_v_total(const struct dc_stream_state *stream) +{ + unsigned int max_hw_v_total = stream->ctx->dc->caps.max_v_total; + + if (stream->ctx->dc->caps.vtotal_limited_by_fp2) { + max_hw_v_total -= stream->timing.v_front_porch + 1; + } + + return max_hw_v_total; +} + unsigned int mod_freesync_calc_v_total_from_refresh( const struct dc_stream_state *stream, unsigned int refresh_in_uhz) @@ -127,13 +140,34 @@ unsigned int mod_freesync_calc_v_total_from_refresh( unsigned int v_total; unsigned int frame_duration_in_ns; + if (refresh_in_uhz == 0) + return stream->timing.v_total; + 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); + if (refresh_in_uhz <= stream->timing.min_refresh_in_uhz) { + /* When the target refresh rate is the minimum panel refresh rate, + * round down the vtotal value to avoid stretching vblank over + * panel's vtotal boundary. + */ + v_total = div64_u64(div64_u64(((unsigned long long)( + frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)), + stream->timing.h_total), 1000000); + } else if (refresh_in_uhz >= stream->timing.max_refresh_in_uhz) { + /* When the target refresh rate is the maximum panel refresh rate + * round up the vtotal value to prevent off-by-one error causing + * v_total_min to be below the panel's lower bound + */ + v_total = div64_u64(div64_u64(((unsigned long long)( + frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)), + stream->timing.h_total) + (1000000 - 1), 1000000); + } else { + v_total = div64_u64(div64_u64(((unsigned long long)( + frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)), + stream->timing.h_total) + 500000, 1000000); + } /* v_total cannot be less than nominal */ if (v_total < stream->timing.v_total) { @@ -157,13 +191,13 @@ static unsigned int calc_v_total_from_duration( if (duration_in_us > vrr->max_duration_in_us) duration_in_us = vrr->max_duration_in_us; - if (dc_is_hdmi_signal(stream->signal)) { + if (dc_is_hdmi_signal(stream->signal)) { // change for HDMI to comply with spec uint32_t h_total_up_scaled; h_total_up_scaled = stream->timing.h_total * 10000; v_total = div_u64((unsigned long long)duration_in_us * stream->timing.pix_clk_100hz + (h_total_up_scaled - 1), - h_total_up_scaled); + h_total_up_scaled); //ceiling for MMax and MMin for MVRR } else { v_total = div64_u64(div64_u64(((unsigned long long)( duration_in_us) * (stream->timing.pix_clk_100hz / 10)), @@ -192,8 +226,8 @@ static void update_v_total_for_static_ramp( 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; + bool ramp_direction_is_up = current_duration_in_us > + target_duration_in_us; /* Calculate ratio between new and current frame duration with 3 digit */ unsigned int frame_duration_ratio = div64_u64(1000000, @@ -278,9 +312,8 @@ static void apply_below_the_range(struct core_freesync *core_freesync, } } 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) { + if (!in_out_vrr->btr.btr_active) in_out_vrr->btr.btr_active = true; - } } /* BTR set to "not active" so disengage */ @@ -338,7 +371,9 @@ static void apply_below_the_range(struct core_freesync *core_freesync, * - 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) { + if (mid_point_frames_ceil && + (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. @@ -385,8 +420,9 @@ static void apply_below_the_range(struct core_freesync *core_freesync, /* 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){ + if (frames_to_insert && + (last_render_time_in_us / frames_to_insert) < + in_out_vrr->min_duration_in_us){ frames_to_insert -= (frames_to_insert > 1) ? 1 : 0; } @@ -524,43 +560,6 @@ static bool vrr_settings_require_update(struct core_freesync *core_freesync, 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, bool freesync_on_desktop) @@ -623,7 +622,6 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr, 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; @@ -669,21 +667,17 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr, (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; + infopacket->sb[8] = max_refresh & 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; + infopacket->sb[12] = (max_refresh >> 8) & 0x03; /* PB16 : Reserved bits 7:1, FixedRate bit 0 */ infopacket->sb[16] = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? 1 : 0; @@ -695,10 +689,12 @@ static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf, if (app_tf != TRANSFER_FUNC_UNKNOWN) { infopacket->valid = true; - if (app_tf != TRANSFER_FUNC_PQ2084) { + if (app_tf == TRANSFER_FUNC_PQ2084) + infopacket->sb[9] |= 0x20; // PB9 = [Bit 5 = PQ EOTF Active] + else { 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] + infopacket->sb[9] |= 0x04; // PB9 = [Bit 2 = Gamma 2.2 EOTF Active] } } } @@ -989,6 +985,7 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, unsigned int refresh_range = 0; unsigned long long min_refresh_in_uhz = 0; unsigned long long max_refresh_in_uhz = 0; + unsigned long long min_hardware_refresh_in_uhz = 0; if (mod_freesync == NULL) return; @@ -999,7 +996,13 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, nominal_field_rate_in_uhz = mod_freesync_calc_nominal_field_rate(stream); - min_refresh_in_uhz = in_config->min_refresh_in_uhz; + if (stream->ctx->dc->caps.max_v_total != 0 && stream->timing.h_total != 0) { + min_hardware_refresh_in_uhz = div64_u64((stream->timing.pix_clk_100hz * 100000000ULL), + (stream->timing.h_total * (long long)calc_max_hardware_v_total(stream))); + } + /* Limit minimum refresh rate to what can be supported by hardware */ + min_refresh_in_uhz = min_hardware_refresh_in_uhz > in_config->min_refresh_in_uhz ? + min_hardware_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 */ @@ -1050,7 +1053,7 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, 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); + div_u64(in_out_vrr->min_refresh_in_uhz + 500000, 1000000); in_out_vrr->supported = true; } @@ -1119,6 +1122,8 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, in_out_vrr->adjust.v_total_min = stream->timing.v_total; in_out_vrr->adjust.v_total_max = stream->timing.v_total; } + + in_out_vrr->adjust.allow_otg_v_count_halt = (in_config->state == VRR_STATE_ACTIVE_FIXED) ? true : false; } void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync, @@ -1129,7 +1134,6 @@ void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync, { 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; @@ -1138,27 +1142,10 @@ void mod_freesync_handle_preflip(struct mod_freesync *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, @@ -1273,27 +1260,16 @@ void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync, 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) + /* + * If VRR is inactive, set vtotal min and max to nominal vtotal + */ + if (in_out_vrr->state == VRR_STATE_INACTIVE) { + in_out_vrr->adjust.v_total_min = + mod_freesync_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; 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; } } @@ -1312,85 +1288,7 @@ unsigned long long mod_freesync_calc_nominal_field_rate( return nominal_field_rate_in_uhz; } -unsigned long long mod_freesync_calc_field_rate_from_timing( - unsigned int vtotal, unsigned int htotal, unsigned int pix_clk) -{ - unsigned long long field_rate_in_uhz = 0; - unsigned int total = htotal * vtotal; - - /* Calculate nominal field rate for stream, rounded up to nearest integer */ - field_rate_in_uhz = pix_clk; - field_rate_in_uhz *= 1000000ULL; - - field_rate_in_uhz = div_u64(field_rate_in_uhz, total); - - return field_rate_in_uhz; -} - bool mod_freesync_get_freesync_enabled(struct mod_vrr_params *pVrr) { return (pVrr->state != VRR_STATE_UNSUPPORTED) && (pVrr->state != VRR_STATE_DISABLED); } - -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; -} |