diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0661-drm-vc4-Use-drm_atomic_helper_check_plane_state-to-s.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0661-drm-vc4-Use-drm_atomic_helper_check_plane_state-to-s.patch | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0661-drm-vc4-Use-drm_atomic_helper_check_plane_state-to-s.patch b/target/linux/bcm27xx/patches-4.19/950-0661-drm-vc4-Use-drm_atomic_helper_check_plane_state-to-s.patch new file mode 100644 index 0000000000..3ead02cbbf --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0661-drm-vc4-Use-drm_atomic_helper_check_plane_state-to-s.patch @@ -0,0 +1,157 @@ +From 2a98dc34696c6510a49a684eb56d3a9c2a150571 Mon Sep 17 00:00:00 2001 +From: Boris Brezillon <boris.brezillon@bootlin.com> +Date: Fri, 3 Aug 2018 11:22:29 +0200 +Subject: [PATCH] drm/vc4: Use drm_atomic_helper_check_plane_state() to + simplify the logic + +drm_atomic_helper_check_plane_state() takes care of checking the +scaling capabilities and calculating the clipped X/Y offsets for us. + +Rely on this function instead of open-coding the logic. + +Incidentally, it seems to fix a problem we had with negative X/Y +positioning of YUV planes. + +Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> +Reviewed-by: Eric Anholt <eric@anholt.net> +Link: https://patchwork.freedesktop.org/patch/msgid/20180803092231.26446-3-boris.brezillon@bootlin.com +--- + drivers/gpu/drm/vc4/vc4_plane.c | 103 ++++++++++++++++---------------- + 1 file changed, 52 insertions(+), 51 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_plane.c ++++ b/drivers/gpu/drm/vc4/vc4_plane.c +@@ -313,31 +313,59 @@ static int vc4_plane_setup_clipping_and_ + u32 subpixel_src_mask = (1 << 16) - 1; + u32 format = fb->format->format; + int num_planes = fb->format->num_planes; +- u32 h_subsample = 1; +- u32 v_subsample = 1; +- int ret; +- int i; ++ int min_scale = 1, max_scale = INT_MAX; ++ struct drm_crtc_state *crtc_state; ++ u32 h_subsample, v_subsample; ++ int i, ret; ++ ++ crtc_state = drm_atomic_get_existing_crtc_state(state->state, ++ state->crtc); ++ if (!crtc_state) { ++ DRM_DEBUG_KMS("Invalid crtc state\n"); ++ return -EINVAL; ++ } ++ ++ /* No configuring scaling on the cursor plane, since it gets ++ * non-vblank-synced updates, and scaling requires LBM changes which ++ * have to be vblank-synced. ++ */ ++ if (plane->type == DRM_PLANE_TYPE_CURSOR) { ++ min_scale = DRM_PLANE_HELPER_NO_SCALING; ++ max_scale = DRM_PLANE_HELPER_NO_SCALING; ++ } else { ++ min_scale = 1; ++ max_scale = INT_MAX; ++ } ++ ++ ret = drm_atomic_helper_check_plane_state(state, crtc_state, ++ min_scale, max_scale, ++ true, true); ++ if (ret) ++ return ret; ++ ++ h_subsample = drm_format_horz_chroma_subsampling(format); ++ v_subsample = drm_format_vert_chroma_subsampling(format); + + for (i = 0; i < num_planes; i++) + vc4_state->offsets[i] = bo->paddr + fb->offsets[i]; + + /* We don't support subpixel source positioning for scaling. */ +- if ((state->src_x & subpixel_src_mask) || +- (state->src_y & subpixel_src_mask) || +- (state->src_w & subpixel_src_mask) || +- (state->src_h & subpixel_src_mask)) { ++ if ((state->src.x1 & subpixel_src_mask) || ++ (state->src.x2 & subpixel_src_mask) || ++ (state->src.y1 & subpixel_src_mask) || ++ (state->src.y2 & subpixel_src_mask)) { + return -EINVAL; + } + +- vc4_state->src_x = state->src_x >> 16; +- vc4_state->src_y = state->src_y >> 16; +- vc4_state->src_w[0] = state->src_w >> 16; +- vc4_state->src_h[0] = state->src_h >> 16; +- +- vc4_state->crtc_x = state->crtc_x; +- vc4_state->crtc_y = state->crtc_y; +- vc4_state->crtc_w = state->crtc_w; +- vc4_state->crtc_h = state->crtc_h; ++ vc4_state->src_x = state->src.x1 >> 16; ++ vc4_state->src_y = state->src.y1 >> 16; ++ vc4_state->src_w[0] = (state->src.x2 - state->src.x1) >> 16; ++ vc4_state->src_h[0] = (state->src.y2 - state->src.y1) >> 16; ++ ++ vc4_state->crtc_x = state->dst.x1; ++ vc4_state->crtc_y = state->dst.y1; ++ vc4_state->crtc_w = state->dst.x2 - state->dst.x1; ++ vc4_state->crtc_h = state->dst.y2 - state->dst.y1; + + ret = vc4_plane_margins_adj(state); + if (ret) +@@ -354,8 +382,6 @@ static int vc4_plane_setup_clipping_and_ + if (num_planes > 1) { + vc4_state->is_yuv = true; + +- h_subsample = drm_format_horz_chroma_subsampling(format); +- v_subsample = drm_format_vert_chroma_subsampling(format); + vc4_state->src_w[1] = vc4_state->src_w[0] / h_subsample; + vc4_state->src_h[1] = vc4_state->src_h[0] / v_subsample; + +@@ -380,39 +406,14 @@ static int vc4_plane_setup_clipping_and_ + vc4_state->y_scaling[1] = VC4_SCALING_NONE; + } + +- /* No configuring scaling on the cursor plane, since it gets +- non-vblank-synced updates, and scaling requires requires +- LBM changes which have to be vblank-synced. +- */ +- if (plane->type == DRM_PLANE_TYPE_CURSOR && !vc4_state->is_unity) +- return -EINVAL; +- +- /* Clamp the on-screen start x/y to 0. The hardware doesn't +- * support negative y, and negative x wastes bandwidth. +- */ +- if (vc4_state->crtc_x < 0) { +- for (i = 0; i < num_planes; i++) { +- u32 cpp = fb->format->cpp[i]; +- u32 subs = ((i == 0) ? 1 : h_subsample); +- +- vc4_state->offsets[i] += (cpp * +- (-vc4_state->crtc_x) / subs); +- } +- vc4_state->src_w[0] += vc4_state->crtc_x; +- vc4_state->src_w[1] += vc4_state->crtc_x / h_subsample; +- vc4_state->crtc_x = 0; +- } +- +- if (vc4_state->crtc_y < 0) { +- for (i = 0; i < num_planes; i++) { +- u32 subs = ((i == 0) ? 1 : v_subsample); +- +- vc4_state->offsets[i] += (fb->pitches[i] * +- (-vc4_state->crtc_y) / subs); +- } +- vc4_state->src_h[0] += vc4_state->crtc_y; +- vc4_state->src_h[1] += vc4_state->crtc_y / v_subsample; +- vc4_state->crtc_y = 0; ++ /* Adjust the base pointer to the first pixel to be scanned out. */ ++ for (i = 0; i < num_planes; i++) { ++ vc4_state->offsets[i] += (vc4_state->src_y / ++ (i ? v_subsample : 1)) * ++ fb->pitches[i]; ++ vc4_state->offsets[i] += (vc4_state->src_x / ++ (i ? h_subsample : 1)) * ++ fb->format->cpp[i]; + } + + return 0; |