From: Dillon Varone dillon.varone@amd.com

[WHY & HOW] Hardware does not support the VTotal to be between fp2 lines of the maximum possible VTotal, so add a capability flag to track it and apply where necessary.

Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Jun Lei jun.lei@amd.com Reviewed-by: Anthony Koo anthony.koo@amd.com Signed-off-by: Dillon Varone dillon.varone@amd.com Signed-off-by: Alex Hung alex.hung@amd.com --- drivers/gpu/drm/amd/display/dc/dc.h | 1 + .../dc/dml2/dml21/dml21_translation_helper.c | 27 +++++++++++++++++-- .../dc/resource/dcn30/dcn30_resource.c | 1 + .../dc/resource/dcn302/dcn302_resource.c | 1 + .../dc/resource/dcn303/dcn303_resource.c | 1 + .../dc/resource/dcn32/dcn32_resource.c | 1 + .../dc/resource/dcn321/dcn321_resource.c | 1 + .../dc/resource/dcn35/dcn35_resource.c | 1 + .../dc/resource/dcn351/dcn351_resource.c | 1 + .../dc/resource/dcn401/dcn401_resource.c | 1 + .../amd/display/modules/freesync/freesync.c | 13 ++++++++- 11 files changed, 46 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 943e52bb2c31..5f1b3ce67cd1 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -290,6 +290,7 @@ struct dc_caps { uint16_t subvp_vertical_int_margin_us; bool seamless_odm; uint32_t max_v_total; + bool vtotal_limited_by_fp2; uint32_t max_disp_clock_khz_at_vmin; uint8_t subvp_drr_vblank_start_margin_us; bool cursor_not_scaled; diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c index 138b4b1e42ed..f66493528f42 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c @@ -339,11 +339,22 @@ void dml21_apply_soc_bb_overrides(struct dml2_initialize_instance_in_out *dml_in // } }

+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; +} + static void populate_dml21_timing_config_from_stream_state(struct dml2_timing_cfg *timing, struct dc_stream_state *stream, struct dml2_context *dml_ctx) { - unsigned int hblank_start, vblank_start; + unsigned int hblank_start, vblank_start, min_hardware_refresh_in_uhz;

timing->h_active = stream->timing.h_addressable + stream->timing.h_border_left + stream->timing.h_border_right; timing->v_active = stream->timing.v_addressable + stream->timing.v_border_bottom + stream->timing.v_border_top; @@ -371,11 +382,23 @@ static void populate_dml21_timing_config_from_stream_state(struct dml2_timing_cf - stream->timing.v_border_top - stream->timing.v_border_bottom;

timing->drr_config.enabled = stream->ignore_msa_timing_param; - timing->drr_config.min_refresh_uhz = stream->timing.min_refresh_in_uhz; timing->drr_config.drr_active_variable = stream->vrr_active_variable; timing->drr_config.drr_active_fixed = stream->vrr_active_fixed; timing->drr_config.disallowed = !stream->allow_freesync;

+ /* limit min refresh rate to DC cap */ + min_hardware_refresh_in_uhz = stream->timing.min_refresh_in_uhz; + if (stream->ctx->dc->caps.max_v_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))); + } + + if (stream->timing.min_refresh_in_uhz > min_hardware_refresh_in_uhz) { + timing->drr_config.min_refresh_uhz = stream->timing.min_refresh_in_uhz; + } else { + timing->drr_config.min_refresh_uhz = min_hardware_refresh_in_uhz; + } + if (dml_ctx->config.callbacks.get_max_flickerless_instant_vtotal_increase && stream->ctx->dc->config.enable_fpo_flicker_detection == 1) timing->drr_config.max_instant_vtotal_delta = dml_ctx->config.callbacks.get_max_flickerless_instant_vtotal_increase(stream, false); diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c index cd31e4f16c14..bfd0eccbed28 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c @@ -2353,6 +2353,7 @@ static bool dcn30_resource_construct(

dc->caps.dp_hdmi21_pcon_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* read VBIOS LTTPR caps */ { diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn302/dcn302_resource.c index 02af8b8f4d27..7baefc910a3d 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn302/dcn302_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn302/dcn302_resource.c @@ -1233,6 +1233,7 @@ static bool dcn302_resource_construct( dc->caps.extended_aux_timeout_support = true; dc->caps.dmcub_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn303/dcn303_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn303/dcn303_resource.c index 7002a8dd358a..8a57d46ad15f 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn303/dcn303_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn303/dcn303_resource.c @@ -1178,6 +1178,7 @@ static bool dcn303_resource_construct( dc->caps.extended_aux_timeout_support = true; dc->caps.dmcub_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c index 01d1a11d5545..984d23bcbc27 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c @@ -2189,6 +2189,7 @@ static bool dcn32_resource_construct( dc->caps.dmcub_support = true; dc->caps.seamless_odm = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c index 5cb74fd9cb7d..06b9479c8bd3 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c @@ -1742,6 +1742,7 @@ static bool dcn321_resource_construct( dc->caps.extended_aux_timeout_support = true; dc->caps.dmcub_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c index 09a5a9474903..89e2adcf2a28 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c @@ -1850,6 +1850,7 @@ static bool dcn35_resource_construct( dc->caps.zstate_support = true; dc->caps.ips_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c index fe382f9b6ff2..263a37c1cd3a 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c @@ -1829,6 +1829,7 @@ static bool dcn351_resource_construct( dc->caps.zstate_support = true; dc->caps.ips_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

/* Color pipeline capabilities */ dc->caps.color.dpp.dcn_arch = 1; diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c index db93bac247c0..2a3dabfe3cea 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c @@ -1864,6 +1864,7 @@ static bool dcn401_resource_construct( dc->caps.extended_aux_timeout_support = true; dc->caps.dmcub_support = true; dc->caps.max_v_total = (1 << 15) - 1; + dc->caps.vtotal_limited_by_fp2 = true;

if (ASICREV_IS_GC_12_0_1_A0(dc->ctx->asic_id.hw_internal_rev)) dc->caps.dcc_plane_width_limit = 7680; diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index f980a84dceef..2b3964529539 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -122,6 +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) @@ -1016,7 +1027,7 @@ 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 * (long long)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 ?