[PATCH v5 5/8] drm/rockchip: vop2: Enforce AFBC source alignment in plane_check
From: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Date: 2025-12-15 14:12:00
Also in:
dri-devel, linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, drm drivers, drm drivers and misc gpu patches, drm drivers for rockchip, the rest · Maintainers:
Heiko Stuebner, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Sandy Huang, Heiko Stübner, Andy Yan, Linus Torvalds
From: Daniel Stone <redacted> Planes can only source AFBC framebuffers at multiples of 4px wide on RK3566/RK3568. Instead of clipping on all SoCs when the user asks for an unaligned source rectangle, reject the configuration in the plane's atomic check on RK3566/RK3568 only. Signed-off-by: Daniel Stone <redacted> [Make RK3566/RK3568 specific, reword message, s/byte/pixel/] Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> --- drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index ded8b9952c6d..0eab3370f088 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c@@ -1076,6 +1076,13 @@ static int vop2_plane_atomic_check(struct drm_plane *plane, return -EINVAL; } + if (vop2->version == VOP_VERSION_RK3568 && drm_is_afbc(fb->modifier) && src_w % 4) { + drm_dbg_kms(vop2->drm, + "AFBC source rectangles must be 4-pixel aligned; is %d\n", + src_w); + return -EINVAL; + } + return 0; }
@@ -1236,11 +1243,9 @@ static void vop2_plane_atomic_update(struct drm_plane *plane, WARN_ON(src_w < 4) || WARN_ON(src_h < 4)) return; - if (afbc_en && src_w % 4) { - drm_dbg_kms(vop2->drm, "vp%d %s src_w[%d] not 4 pixel aligned\n", - vp->id, win->data->name, src_w); - src_w = ALIGN_DOWN(src_w, 4); - } + if (vop2->version == VOP_VERSION_RK3568 && drm_is_afbc(fb->modifier)) + if (WARN_ON(src_w % 4)) + return; act_info = (src_h - 1) << 16 | ((src_w - 1) & 0xffff); dsp_info = (dsp_h - 1) << 16 | ((dsp_w - 1) & 0xffff);
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2.52.0