[RFC PATCH v3 1/3] drm: Introduce solid fill property for drm plane
Jessica Zhang
quic_jesszhan at quicinc.com
Wed Jan 4 23:40:34 UTC 2023
Add support for solid_fill property to drm_plane. In addition, add
support for setting and getting the values for solid_fill.
solid_fill holds data for supporting solid fill planes. The property
accepts an RGB323232 value and the driver data is formatted as such:
struct drm_solid_fill {
u32 r;
u32 g;
u32 b;
};
To enable solid fill planes, userspace must assigned solid_fill to a
property blob containing the following information:
struct drm_solid_fill_info {
u8 version;
u32 r, g, b;
};
Changes in V2:
- Changed solid_fill property to a property blob (Simon, Dmitry)
- Added drm_solid_fill struct (Simon)
- Added drm_solid_fill_info struct (Simon)
Changes in V3:
- Corrected typo in drm_solid_fill struct documentation
Signed-off-by: Jessica Zhang <quic_jesszhan at quicinc.com>
---
drivers/gpu/drm/drm_atomic_state_helper.c | 9 ++++
drivers/gpu/drm/drm_atomic_uapi.c | 59 +++++++++++++++++++++++
drivers/gpu/drm/drm_blend.c | 17 +++++++
include/drm/drm_blend.h | 1 +
include/drm/drm_plane.h | 43 +++++++++++++++++
5 files changed, 129 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index dfb57217253b..c96fd1f2ad99 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -253,6 +253,11 @@ void __drm_atomic_helper_plane_state_reset(struct drm_plane_state *plane_state,
plane_state->alpha = DRM_BLEND_ALPHA_OPAQUE;
plane_state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
+ if (plane_state->solid_fill_blob) {
+ drm_property_blob_put(plane_state->solid_fill_blob);
+ plane_state->solid_fill_blob = NULL;
+ }
+
if (plane->color_encoding_property) {
if (!drm_object_property_get_default_value(&plane->base,
plane->color_encoding_property,
@@ -335,6 +340,9 @@ void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
if (state->fb)
drm_framebuffer_get(state->fb);
+ if (state->solid_fill_blob)
+ drm_property_blob_get(state->solid_fill_blob);
+
state->fence = NULL;
state->commit = NULL;
state->fb_damage_clips = NULL;
@@ -384,6 +392,7 @@ void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
drm_crtc_commit_put(state->commit);
drm_property_blob_put(state->fb_damage_clips);
+ drm_property_blob_put(state->solid_fill_blob);
}
EXPORT_SYMBOL(__drm_atomic_helper_plane_destroy_state);
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index c06d0639d552..8a1d2fb7a757 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -316,6 +316,55 @@ drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
}
EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
+static void drm_atomic_convert_solid_fill_info(struct drm_solid_fill *out,
+ struct drm_solid_fill_info *in)
+{
+ out->r = in->r;
+ out->g = in->g;
+ out->b = in->b;
+}
+
+static int drm_atomic_set_solid_fill_prop(struct drm_plane_state *state,
+ struct drm_property_blob *blob)
+{
+ int ret = 0;
+ int blob_version;
+
+ if (blob == state->solid_fill_blob)
+ return 0;
+
+ drm_property_blob_put(state->solid_fill_blob);
+ state->solid_fill_blob = NULL;
+
+ memset(&state->solid_fill, 0, sizeof(state->solid_fill));
+
+ if (blob) {
+ if (blob->length != sizeof(struct drm_solid_fill_info)) {
+ drm_dbg_atomic(state->plane->dev,
+ "[PLANE:%d:%s] bad solid fill blob length: %zu\n",
+ state->plane->base.id, state->plane->name,
+ blob->length);
+ return -EINVAL;
+ }
+
+ blob_version = ((struct drm_solid_fill_info *)blob->data)->version;
+
+ /* Append with more versions if necessary */
+ if (blob_version == 1) {
+ drm_atomic_convert_solid_fill_info(&state->solid_fill, blob->data);
+ } else {
+ drm_dbg_atomic(state->plane->dev,
+ "[PLANE:%d:%s] failed to set solid fill (ret=%d)\n",
+ state->plane->base.id, state->plane->name,
+ ret);
+ return -EINVAL;
+ }
+ state->solid_fill_blob = drm_property_blob_get(blob);
+ }
+
+ return ret;
+}
+
static void set_out_fence_for_crtc(struct drm_atomic_state *state,
struct drm_crtc *crtc, s32 __user *fence_ptr)
{
@@ -544,6 +593,13 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
state->src_w = val;
} else if (property == config->prop_src_h) {
state->src_h = val;
+ } else if (property == plane->solid_fill_property) {
+ struct drm_property_blob *solid_fill = drm_property_lookup_blob(dev, val);
+
+ ret = drm_atomic_set_solid_fill_prop(state, solid_fill);
+ drm_property_blob_put(solid_fill);
+
+ return ret;
} else if (property == plane->alpha_property) {
state->alpha = val;
} else if (property == plane->blend_mode_property) {
@@ -616,6 +672,9 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
*val = state->src_w;
} else if (property == config->prop_src_h) {
*val = state->src_h;
+ } else if (property == plane->solid_fill_property) {
+ *val = state->solid_fill_blob ?
+ state->solid_fill_blob->base.id : 0;
} else if (property == plane->alpha_property) {
*val = state->alpha;
} else if (property == plane->blend_mode_property) {
diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c
index b4c8cab7158c..17ab645c8309 100644
--- a/drivers/gpu/drm/drm_blend.c
+++ b/drivers/gpu/drm/drm_blend.c
@@ -616,3 +616,20 @@ int drm_plane_create_blend_mode_property(struct drm_plane *plane,
return 0;
}
EXPORT_SYMBOL(drm_plane_create_blend_mode_property);
+
+int drm_plane_create_solid_fill_property(struct drm_plane *plane)
+{
+ struct drm_property *prop;
+
+ prop = drm_property_create(plane->dev,
+ DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
+ "solid_fill", 0);
+ if (!prop)
+ return -ENOMEM;
+
+ drm_object_attach_property(&plane->base, prop, 0);
+ plane->solid_fill_property = prop;
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_solid_fill_property);
diff --git a/include/drm/drm_blend.h b/include/drm/drm_blend.h
index 88bdfec3bd88..0338a860b9c8 100644
--- a/include/drm/drm_blend.h
+++ b/include/drm/drm_blend.h
@@ -58,4 +58,5 @@ int drm_atomic_normalize_zpos(struct drm_device *dev,
struct drm_atomic_state *state);
int drm_plane_create_blend_mode_property(struct drm_plane *plane,
unsigned int supported_modes);
+int drm_plane_create_solid_fill_property(struct drm_plane *plane);
#endif
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 447e664e49d5..3b9da06f358b 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -40,6 +40,25 @@ enum drm_scaling_filter {
DRM_SCALING_FILTER_NEAREST_NEIGHBOR,
};
+/**
+ * struct drm_solid_fill_info - User info for solid fill planes
+ */
+struct drm_solid_fill_info {
+ __u8 version;
+ __u32 r, g, b;
+};
+
+/**
+ * struct solid_fill_property - RGB values for solid fill plane
+ *
+ * Note: This is the V1 for this feature
+ */
+struct drm_solid_fill {
+ uint32_t r;
+ uint32_t g;
+ uint32_t b;
+};
+
/**
* struct drm_plane_state - mutable plane state
*
@@ -116,6 +135,23 @@ struct drm_plane_state {
/** @src_h: height of visible portion of plane (in 16.16) */
uint32_t src_h, src_w;
+ /**
+ * @solid_fill_blob:
+ *
+ * Blob containing relevant information for a solid fill plane
+ * including pixel format and data. See
+ * drm_plane_create_solid_fill_property() for more details.
+ */
+ struct drm_property_blob *solid_fill_blob;
+
+ /**
+ * @solid_fill:
+ *
+ * Pixel data for solid fill planes. See
+ * drm_plane_create_solid_fill_property() for more details.
+ */
+ struct drm_solid_fill solid_fill;
+
/**
* @alpha:
* Opacity of the plane with 0 as completely transparent and 0xffff as
@@ -699,6 +735,13 @@ struct drm_plane {
*/
struct drm_plane_state *state;
+ /*
+ * @solid_fill_property:
+ * Optional solid_fill property for this plane. See
+ * drm_plane_create_solid_fill_property().
+ */
+ struct drm_property *solid_fill_property;
+
/**
* @alpha_property:
* Optional alpha property for this plane. See
--
2.38.1
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