diff options
| author | Dillon Varone <[email protected]> | 2024-11-13 21:44:15 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2024-12-02 23:35:28 +0000 |
| commit | a29997b7ac1f5c816b543e0c56aa2b5b56baac24 (patch) | |
| tree | 57290c24e8e930175166e90c98d14ecfbfac0f69 /drivers/gpu/drm/amd/display/modules/freesync/freesync.c | |
| parent | drm/amd/display: Correct prefetch calculation (diff) | |
| download | kernel-a29997b7ac1f5c816b543e0c56aa2b5b56baac24.tar.gz kernel-a29997b7ac1f5c816b543e0c56aa2b5b56baac24.zip | |
drm/amd/display: Limit VTotal range to max hw cap minus fp
[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 <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: [email protected]
Reviewed-by: Jun Lei <[email protected]>
Reviewed-by: Anthony Koo <[email protected]>
Signed-off-by: Dillon Varone <[email protected]>
Signed-off-by: Alex Hung <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 13 |
1 files changed, 12 insertions, 1 deletions
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 ? |