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| author | Eric Cook <Eric.Cook@amd.com> | 2017-04-26 11:51:38 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:06:43 -0400 |
| commit | 7cc9e7a68abef8d1303700bac6f58ab76bc9db7b (patch) | |
| tree | 19c9b347a3f4998ff5afad6e1eb7b3bb5b7a3cf0 /drivers/gpu | |
| parent | 1c29313b96fbe9606ecaab540800d20f2ae88adc (diff) | |
| download | linux-7cc9e7a68abef8d1303700bac6f58ab76bc9db7b.tar.bz2 | |
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -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))); |