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drm/i915: Do not add all planes when checking scalers on glk+ 

We cannot switch between HQ and normal mode on GLK+, so only
add planes on platforms where it makes sense.

We could probably restrict it even more to only add when scaler
users toggles between 1 and 2, but lets just leave it for now.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920114235.22411-9-maarten.lankhorst@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
alistair/sunxi64-5.5-dsi
Maarten Lankhorst 2019-09-20 13:42:21 +02:00
parent c47b7ddbcb
commit c750c22b24
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/i915/display/intel_atomic.c
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@ -373,6 +373,15 @@ int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
*/
if (!plane) {
struct drm_plane_state *state;
/*
* GLK+ scalers don't have a HQ mode so it
* isn't necessary to change between HQ and dyn mode
* on those platforms.
*/
if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
continue;
plane = drm_plane_from_index(&dev_priv->drm, i);
state = drm_atomic_get_plane_state(drm_state, plane);
if (IS_ERR(state)) {