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| author | Maarten Lankhorst <dev@lankhorst.se> | 2025-07-08 17:49:07 +0300 |
|---|---|---|
| committer | Maarten Lankhorst <dev@lankhorst.se> | 2025-07-08 17:49:07 +0300 |
| commit | e21354aea4b4420b53c44e36828607a7c94a994c (patch) | |
| tree | 003636d3a15eaebe9b948f9f8db6ad9e52a7e12c /drivers/gpu/drm/amd/display/modules/freesync/freesync.c | |
| parent | 482c7e296edc0f594e8869a789a40be53c49bd6a (diff) | |
| parent | 203dcde881561f1a4ee1084e2ee438fb4522c94a (diff) | |
| download | linux-e21354aea4b4420b53c44e36828607a7c94a994c.tar.xz | |
Merge remote-tracking branch 'drm/drm-next' into drm-misc-next
Pull in drm-intel-next for the updates to drm panic handling.
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 10 |
1 files changed, 9 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 3ba9b62ba70b..71efd2770c99 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -147,7 +147,7 @@ unsigned int mod_freesync_calc_v_total_from_refresh( ((unsigned int)(div64_u64((1000000000ULL * 1000000), refresh_in_uhz))); - if (MICRO_HZ_TO_HZ(refresh_in_uhz) <= stream->timing.min_refresh_in_uhz) { + 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. @@ -155,6 +155,14 @@ unsigned int mod_freesync_calc_v_total_from_refresh( 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)), |