Add support for the zpos plane property. Depending on the plane type:
- Primary and cursor planes: Create an immutable zpos property. The
primary plane is always at the bottom and the cursor plane is always
on the top.
- Overlay planes: Create a mutable zpos property allowing to change
their order but always keep them between the primary and cursor
planes.
As documented, "vkms_crtc_state.active_planes" must be sorted by zpos.
This is achieved by inserting them in the array at their
normalized_zpos index.
The following igt-gpu-tools tests were executed:
| master branch | this patch |
| SUCCESS | SKIP | FAIL | SUCCESS | SKIP | FAIL |
kms_atomic | 10 | 02 | 00 | 09 | 02 | 01 |
kms_plane | 06 | 00 | 14 | 06 | 00 | 14 |
kms_plane_cursor | 09 | 45 | 00 | 09 | 45 | 00 |
kms_plane_multiple | 01 | 23 | 00 | 01 | 23 | 00 |
kms_writeback | 04 | 00 | 00 | 04 | 00 | 00 |
Notice that there is one test failing in the kms_atomic row
(plane-immutable-zpos) but it is due to timeout capturing CRC.
This happens when the primary plane is disabled and the composer is not
able to find the "primary_composer" variable.
While the timeout bug needs to be fixed in a different series, the zpos
property works as expected.
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
v2:
- Use number of planes constant introduced in "drm/vkms: add support
for multiple overlay planes" v2
- Add a test results in the commit message
---
drivers/gpu/drm/vkms/vkms_crtc.c | 3 +--
drivers/gpu/drm/vkms/vkms_drv.c | 1 +
drivers/gpu/drm/vkms/vkms_plane.c | 23 +++++++++++++++++++++++
3 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index 57bbd32e9beb..4f23488b15f3 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -207,7 +207,6 @@ static int vkms_crtc_atomic_check(struct drm_crtc *crtc,
return -ENOMEM;
vkms_state->num_active_planes = i;
- i = 0;
drm_for_each_plane_mask(plane, crtc->dev, crtc_state->plane_mask) {
plane_state = drm_atomic_get_existing_plane_state(crtc_state->state,
plane);
@@ -215,7 +214,7 @@ static int vkms_crtc_atomic_check(struct drm_crtc *crtc,
if (!plane_state->visible)
continue;
- vkms_state->active_planes[i++] =
+ vkms_state->active_planes[plane_state->normalized_zpos] =
to_vkms_plane_state(plane_state);
}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 0ffe5f0e33f7..d7ee64f5e339 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -153,6 +153,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev)
* fbdev helpers. We have to go with 0, meaning "pick the default",
* which ix XRGB8888 in all cases. */
dev->mode_config.preferred_depth = 0;
+ dev->mode_config.normalize_zpos = true;
dev->mode_config.helper_private = &vkms_mode_config_helpers;
return vkms_output_init(vkmsdev, 0);
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 32409e15244b..55d22a6a401a 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -81,6 +81,8 @@ static void vkms_plane_reset(struct drm_plane *plane)
}
__drm_gem_reset_shadow_plane(plane, &vkms_state->base);
+ vkms_state->base.base.zpos = drm_plane_index(plane);
+ vkms_state->base.base.normalized_zpos = drm_plane_index(plane);
}
static const struct drm_plane_funcs vkms_plane_funcs = {
@@ -158,6 +160,22 @@ static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
};
+static int vkms_plane_create_zpos_property(struct vkms_plane *plane)
+{
+ int ret;
+ unsigned int zpos = drm_plane_index(&plane->base);
+
+ if (plane->base.type == DRM_PLANE_TYPE_OVERLAY) {
+ ret = drm_plane_create_zpos_property(&plane->base, zpos,
+ 1, NUM_OVERLAY_PLANES);
+ } else {
+ ret = drm_plane_create_zpos_immutable_property(&plane->base,
+ zpos);
+ }
+
+ return ret;
+}
+
struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
enum drm_plane_type type, int index)
{
@@ -166,6 +184,7 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
struct vkms_plane *plane;
const u32 *formats;
int nformats;
+ int ret;
switch (type) {
case DRM_PLANE_TYPE_PRIMARY:
@@ -195,5 +214,9 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
drm_plane_helper_add(&plane->base, funcs);
+ ret = vkms_plane_create_zpos_property(plane);
+ if (ret)
+ return ERR_PTR(ret);
+
return plane;
}
--
2.25.1
