[PATCH 03/12] drm/i915: Stage scaler request for NV12 as src format

Chandra Konduru
2015-05-18T05:12:24Z

This patch stages a scaler request when input format
is NV12. The same scaler does both chroma-upsampling
and resolution scaling as needed.

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0a2e883..1ad7d13 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4499,9 +4499,11 @@ skl_update_scaler_users(
rotation = DRM_ROTATE_0;
}

- need_scaling = intel_rotation_90_or_270(rotation) ?
- (src_h != dst_w || src_w != dst_h):
- (src_w != dst_w || src_h != dst_h);
+ /* scaling is required when src dst sizes doesn't match or format is NV12 */
+ need_scaling = (src_w != dst_w || src_h != dst_h ||
+ (intel_rotation_90_or_270(rotation) &&
+ (src_h != dst_w || src_w != dst_h)) ||
+ (fb && fb->pixel_format == DRM_FORMAT_NV12));

/*
* if plane is being disabled or scaler is no more required or force detach
@@ -4567,6 +4569,7 @@ skl_update_scaler_users(
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
+ case DRM_FORMAT_NV12:
break;
default:
DRM_DEBUG_KMS("PLANE:%d FB:%d unsupported scaling format 0x%x\n",