We'll construct color pipelines out of drm_colorop by
chaining them via the NEXT pointer. NEXT will point to
the next drm_colorop in the pipeline, or by 0 if we're
at the end of the pipeline.
v4:
- Allow setting of NEXT property to NULL (Chaitanya Kumar Borah)
v3:
- Add next pointer to colorop to be used by drivers
and in DRM core
Signed-off-by: Harry Wentland <harry.wentland@xxxxxxx>
---
drivers/gpu/drm/drm_colorop.c | 29 +++++++++++++++++++++++++++++
include/drm/drm_colorop.h | 20 ++++++++++++++++++++
2 files changed, 49 insertions(+)
diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c
index 29979816a2d1..71c2286333a1 100644
--- a/drivers/gpu/drm/drm_colorop.c
+++ b/drivers/gpu/drm/drm_colorop.c
@@ -59,6 +59,7 @@ int drm_colorop_init(struct drm_device *dev, struct drm_colorop *colorop,
colorop->dev = dev;
colorop->type = type;
colorop->plane = plane;
+ colorop->next = NULL;
list_add_tail(&colorop->head, &config->colorop_list);
colorop->index = config->num_colorop++;
@@ -92,6 +93,15 @@ int drm_colorop_init(struct drm_device *dev, struct drm_colorop *colorop,
colorop->bypass_property,
1);
+ prop = drm_property_create_object(dev, DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ATOMIC,
+ "NEXT", DRM_MODE_OBJECT_COLOROP);
+ if (!prop)
+ return -ENOMEM;
+ colorop->next_property = prop;
+ drm_object_attach_property(&colorop->base,
+ colorop->next_property,
+ 0);
+
return ret;
}
EXPORT_SYMBOL(drm_colorop_init);
@@ -279,3 +289,22 @@ const char *drm_get_colorop_curve_1d_type_name(enum drm_colorop_curve_1d_type ty
return colorop_curve_1d_type_names[type];
}
+
+/**
+ * drm_colorop_set_next_property - sets the next pointer
+ * @colorop: drm colorop
+ * @next: next colorop
+ *
+ * Should be used when constructing the color pipeline
+ */
+void drm_colorop_set_next_property(struct drm_colorop *colorop, struct drm_colorop *next)
+{
+ if (!colorop->next_property)
+ return;
+
+ drm_object_property_set_value(&colorop->base,
+ colorop->next_property,
+ next ? next->base.id : 0);
+ colorop->next = next;
+}
+EXPORT_SYMBOL(drm_colorop_set_next_property);
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index 28aa5c1c309e..8060988b5892 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -132,6 +132,14 @@ struct drm_colorop {
*/
enum drm_colorop_type type;
+ /**
+ * @next:
+ *
+ * Read-only
+ * Pointer to next drm_colorop in pipeline
+ */
+ struct drm_colorop *next;
+
/**
* @type_property:
*
@@ -159,10 +167,20 @@ struct drm_colorop {
*/
struct drm_property *curve_1d_type_property;
+ /**
+ * @next_property
+ *
+ * Read-only property to next colorop in the pipeline
+ */
+ struct drm_property *next_property;
+
};
#define obj_to_colorop(x) container_of(x, struct drm_colorop, base)
+
+
+
/**
* drm_crtc_find - look up a Colorop object from its ID
* @dev: DRM device
@@ -213,5 +231,7 @@ static inline unsigned int drm_colorop_index(const struct drm_colorop *colorop)
#define drm_for_each_colorop(colorop, dev) \
list_for_each_entry(colorop, &(dev)->mode_config.colorop_list, head)
+void drm_colorop_set_next_property(struct drm_colorop *colorop, struct drm_colorop *next);
+
#endif /* __DRM_COLOROP_H__ */
--
2.44.0
