diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 178 |
1 files changed, 34 insertions, 144 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index 3955b7e4b2e2..3ba9b62ba70b 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -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; @@ -121,6 +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) @@ -128,13 +140,26 @@ 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 (MICRO_HZ_TO_HZ(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 { + 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) { @@ -158,13 +183,13 @@ 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)), @@ -527,43 +552,6 @@ 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) @@ -1002,7 +990,7 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, 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 * stream->ctx->dc->caps.max_v_total)); + (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 ? @@ -1057,7 +1045,7 @@ 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; } @@ -1126,6 +1114,8 @@ 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, @@ -1264,28 +1254,6 @@ void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync, } } -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) { @@ -1301,85 +1269,7 @@ 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; -} |