diff options
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_plane.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index d0771ebd5f75..23916814b4e3 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -437,10 +437,7 @@ static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst) static u32 vc4_lbm_size(struct drm_plane_state *state) { struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); - /* This is the worst case number. One of the two sizes will - * be used depending on the scaling configuration. - */ - u32 pix_per_line = max(vc4_state->src_w[0], (u32)vc4_state->crtc_w); + u32 pix_per_line; u32 lbm; /* LBM is not needed when there's no vertical scaling. */ @@ -448,6 +445,18 @@ static u32 vc4_lbm_size(struct drm_plane_state *state) vc4_state->y_scaling[1] == VC4_SCALING_NONE) return 0; + /* + * This can be further optimized in the RGB/YUV444 case if the PPF + * decimation factor is between 0.5 and 1.0 by using crtc_w. + * + * It's not an issue though, since in that case since src_w[0] is going + * to be greater than or equal to crtc_w. + */ + if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ) + pix_per_line = vc4_state->crtc_w; + else + pix_per_line = vc4_state->src_w[0]; + if (!vc4_state->is_yuv) { if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ) lbm = pix_per_line * 8; |