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authorDave Stevenson <dave.stevenson@raspberrypi.com>2022-12-07 12:53:16 +0100
committerMaxime Ripard <maxime@cerno.tech>2023-01-09 15:21:31 +0100
commit868bc9994c0c6b229989623c7614f15853bf16b5 (patch)
tree4a350c67370dff8a28e9c8654087f3005d45dca0 /drivers/gpu/drm/vc4
parent87551ec650bb87d35f1b29bba6a2430896e08da0 (diff)
downloadlinux-868bc9994c0c6b229989623c7614f15853bf16b5.tar.gz
drm/vc4: hvs: Support zpos on all planes
Adds the zpos property to all planes, and creates the dlist by placing the fragments in the correct order based on zpos. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-hvs-crtc-misc-v1-5-1f8e0770798b@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/vc4')
-rw-r--r--drivers/gpu/drm/vc4/vc4_hvs.c43
-rw-r--r--drivers/gpu/drm/vc4/vc4_kms.c1
-rw-r--r--drivers/gpu/drm/vc4/vc4_plane.c22
3 files changed, 48 insertions, 18 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
index 56a0a1d8aee0..260efd44a821 100644
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -570,6 +570,8 @@ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
bool enable_bg_fill = false;
u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;
u32 __iomem *dlist_next = dlist_start;
+ unsigned int zpos = 0;
+ bool found = false;
int idx;
if (!drm_dev_enter(dev, &idx)) {
@@ -583,23 +585,34 @@ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
}
/* Copy all the active planes' dlist contents to the hardware dlist. */
- drm_atomic_crtc_for_each_plane(plane, crtc) {
- /* Is this the first active plane? */
- if (dlist_next == dlist_start) {
- /* We need to enable background fill when a plane
- * could be alpha blending from the background, i.e.
- * where no other plane is underneath. It suffices to
- * consider the first active plane here since we set
- * needs_bg_fill such that either the first plane
- * already needs it or all planes on top blend from
- * the first or a lower plane.
- */
- vc4_plane_state = to_vc4_plane_state(plane->state);
- enable_bg_fill = vc4_plane_state->needs_bg_fill;
+ do {
+ found = false;
+
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
+ if (plane->state->normalized_zpos != zpos)
+ continue;
+
+ /* Is this the first active plane? */
+ if (dlist_next == dlist_start) {
+ /* We need to enable background fill when a plane
+ * could be alpha blending from the background, i.e.
+ * where no other plane is underneath. It suffices to
+ * consider the first active plane here since we set
+ * needs_bg_fill such that either the first plane
+ * already needs it or all planes on top blend from
+ * the first or a lower plane.
+ */
+ vc4_plane_state = to_vc4_plane_state(plane->state);
+ enable_bg_fill = vc4_plane_state->needs_bg_fill;
+ }
+
+ dlist_next += vc4_plane_write_dlist(plane, dlist_next);
+
+ found = true;
}
- dlist_next += vc4_plane_write_dlist(plane, dlist_next);
- }
+ zpos++;
+ } while (found);
writel(SCALER_CTL0_END, dlist_next);
dlist_next++;
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 53d9f30460cf..a7e3d47c50f4 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -1074,6 +1074,7 @@ int vc4_kms_load(struct drm_device *dev)
dev->mode_config.helper_private = &vc4_mode_config_helpers;
dev->mode_config.preferred_depth = 24;
dev->mode_config.async_page_flip = true;
+ dev->mode_config.normalize_zpos = true;
ret = vc4_ctm_obj_init(vc4);
if (ret)
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index 8b92a45a3c89..c212f8c10388 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -1568,9 +1568,14 @@ struct drm_plane *vc4_plane_init(struct drm_device *dev,
DRM_COLOR_YCBCR_BT709,
DRM_COLOR_YCBCR_LIMITED_RANGE);
+ if (type == DRM_PLANE_TYPE_PRIMARY)
+ drm_plane_create_zpos_immutable_property(plane, 0);
+
return plane;
}
+#define VC4_NUM_OVERLAY_PLANES 16
+
int vc4_plane_create_additional_planes(struct drm_device *drm)
{
struct drm_plane *cursor_plane;
@@ -1586,24 +1591,35 @@ int vc4_plane_create_additional_planes(struct drm_device *drm)
* modest number of planes to expose, that should hopefully
* still cover any sane usecase.
*/
- for (i = 0; i < 16; i++) {
+ for (i = 0; i < VC4_NUM_OVERLAY_PLANES; i++) {
struct drm_plane *plane =
vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY,
GENMASK(drm->mode_config.num_crtc - 1, 0));
if (IS_ERR(plane))
continue;
+
+ /* Create zpos property. Max of all the overlays + 1 primary +
+ * 1 cursor plane on a crtc.
+ */
+ drm_plane_create_zpos_property(plane, i + 1, 1,
+ VC4_NUM_OVERLAY_PLANES + 1);
}
drm_for_each_crtc(crtc, drm) {
/* Set up the legacy cursor after overlay initialization,
- * since we overlay planes on the CRTC in the order they were
- * initialized.
+ * since the zpos fallback is that planes are rendered by plane
+ * ID order, and that then puts the cursor on top.
*/
cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR,
drm_crtc_mask(crtc));
if (!IS_ERR(cursor_plane)) {
crtc->cursor = cursor_plane;
+
+ drm_plane_create_zpos_property(cursor_plane,
+ VC4_NUM_OVERLAY_PLANES + 1,
+ 1,
+ VC4_NUM_OVERLAY_PLANES + 1);
}
}