diff options
author | Eric Cook <Eric.Cook@amd.com> | 2017-04-26 11:51:38 -0400 |
---|---|---|
committer | Harry Wentland <harry.wentland@amd.com> | 2017-05-03 16:47:06 -0400 |
commit | 66625c6cf90d59044ae5ca81461ca375e11c3375 (patch) | |
tree | 734cc3f6e8fd70403cccb27163627474ac6db411 | |
parent | c3c58e180b770a76691e8bf8221fd8efe2295320 (diff) |
drm/amd/display: Check for Zero Range in FreeSync Calc
-check for min/max range in freesync calculation and handle it accordingly
Signed-off-by: Eric <eric.cook@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
-rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index d3d57008271b..009cb797bcfa 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -363,6 +363,21 @@ static void calc_freesync_range(struct core_freesync *core_freesync, unsigned int index = map_index_from_stream(core_freesync, stream); uint32_t vtotal = stream->timing.v_total; + if ((min_refresh_in_uhz == 0) || (max_refresh_in_uhz == 0)) { + state->freesync_range.min_refresh = + state->nominal_refresh_rate_in_micro_hz; + state->freesync_range.max_refresh = + state->nominal_refresh_rate_in_micro_hz; + + state->freesync_range.max_frame_duration = 0; + state->freesync_range.min_frame_duration = 0; + + state->freesync_range.vmax = vtotal; + state->freesync_range.vmin = vtotal; + + return; + } + min_frame_duration_in_ns = ((unsigned int) (div64_u64( (1000000000ULL * 1000000), max_refresh_in_uhz))); |