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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-10-26 14:40:12 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2018-03-01 09:18:18 +0200 |
| commit | b994e53c2c6437689873af4ff61803bef78a2330 (patch) | |
| tree | 37445f4afc573383dc436b81b0345b8a57d7a046 /drivers/gpu/drm/omapdrm | |
| parent | 46a930418544a5c28abec8dc3e0899d53381814a (diff) | |
| download | linux-stable-b994e53c2c6437689873af4ff61803bef78a2330.tar.gz linux-stable-b994e53c2c6437689873af4ff61803bef78a2330.tar.bz2 linux-stable-b994e53c2c6437689873af4ff61803bef78a2330.zip | |
drm/omap: fix WBDELAYCOUNT with interlace
Vertical blanking needs to be halved on interlace modes. WBDELAYCOUNT
was calculated without such halving, resulting in WBUNCOMPLETE errors.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Benoit Parrot <bparrot@ti.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/dispc.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c index 7398039954a5..000a3d4a27bf 100644 --- a/drivers/gpu/drm/omapdrm/dss/dispc.c +++ b/drivers/gpu/drm/omapdrm/dss/dispc.c @@ -2814,14 +2814,18 @@ int dispc_wb_setup(struct dispc_device *dispc, /* WBDELAYCOUNT */ REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0); } else { - int wbdelay; + u32 wbdelay; if (channel_in == DSS_WB_TV_MGR) - wbdelay = min(vm->vsync_len + vm->vback_porch, - (u32)255); + wbdelay = vm->vsync_len + vm->vback_porch; else - wbdelay = min(vm->vfront_porch + - vm->vsync_len + vm->vback_porch, (u32)255); + wbdelay = vm->vfront_porch + vm->vsync_len + + vm->vback_porch; + + if (vm->flags & DISPLAY_FLAGS_INTERLACED) + wbdelay /= 2; + + wbdelay = min(wbdelay, 255u); /* WBDELAYCOUNT */ REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0); |