diff options
| author | Sean Paul <seanpaul@chromium.org> | 2019-10-23 11:14:11 -0400 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2019-10-23 11:14:11 -0400 |
| commit | 44bf67f32a6803339ac1ba721b158c3e2272cabe (patch) | |
| tree | 1ed93503a4a1d20005b85df91bd81e5f5982f348 /drivers/gpu/drm/bridge | |
| parent | a96bf3cbd7b8557f5c5c7938e5f8926ea39d55e9 (diff) | |
| parent | 2e79e22e092acd55da0b2db066e4826d7d152c41 (diff) | |
| download | linux-44bf67f32a6803339ac1ba721b158c3e2272cabe.tar.bz2 | |
Merge drm/drm-next into drm-misc-next
Parroting Daniel's backmerge justification from
2e79e22e092acd55da0b2db066e4826d7d152c41:
Thierry needs fd70c7755bf0 ("drm/bridge: tc358767: fix max_tu_symbol
value") to be able to merge his dp_link patch series.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 51664a2df731..da7e35b0893d 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -729,6 +729,8 @@ static int tc_set_video_mode(struct tc_data *tc, int lower_margin = mode->vsync_start - mode->vdisplay; int vsync_len = mode->vsync_end - mode->vsync_start; u32 dp0_syncval; + u32 bits_per_pixel = 24; + u32 in_bw, out_bw; /* * Recommended maximum number of symbols transferred in a transfer unit: @@ -736,7 +738,10 @@ static int tc_set_video_mode(struct tc_data *tc, * (output active video bandwidth in bytes)) * Must be less than tu_size. */ - max_tu_symbol = TU_SIZE_RECOMMENDED - 1; + + in_bw = mode->clock * bits_per_pixel / 8; + out_bw = tc->link.base.num_lanes * tc->link.base.rate; + max_tu_symbol = DIV_ROUND_UP(in_bw * TU_SIZE_RECOMMENDED, out_bw); dev_dbg(tc->dev, "set mode %dx%d\n", mode->hdisplay, mode->vdisplay); |