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author | Thierry Reding <treding@nvidia.com> | 2015-07-21 14:42:30 (GMT) |
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committer | Thierry Reding <treding@nvidia.com> | 2015-08-13 11:47:42 (GMT) |
commit | a1df3b24884d5d8946d6cdf44e6d403e3925b4c6 (patch) | |
tree | 3700364b0480458fe1dca624f382119c101e1638 /drivers/gpu/drm/tegra | |
parent | 6ca1f62f0d69120030469cc0b409bd521cbd67cc (diff) | |
download | linux-a1df3b24884d5d8946d6cdf44e6d403e3925b4c6.tar.xz |
drm/tegra: dc: Clarify comment about cursor treatment
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra')
-rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index e424755..6b1dc02f 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -809,9 +809,11 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm, return ERR_PTR(-ENOMEM); /* - * We'll treat the cursor as an overlay plane with index 6 here so - * that the update and activation request bits in DC_CMD_STATE_CONTROL - * match up. + * This index is kind of fake. The cursor isn't a regular plane, but + * its update and activation request bits in DC_CMD_STATE_CONTROL do + * use the same programming. Setting this fake index here allows the + * code in tegra_add_plane_state() to do the right thing without the + * need to special-casing the cursor plane. */ plane->index = 6; |