Add standard optinal property blobs for YCbCr to RGB conversion CSC
matrix and YCbCr preoffset vector in DRM planes. New enums are defined
to YCBCR_ENCODING property to activate the CSC and preoffset
properties. For simplicity the new properties are stored in the
drm_plane object, because the YCBCR_ENCODING is already there. The
blob contents are defined in the uapi/drm/drm_mode.h header.
Signed-off-by: Jyri Sarha <jsarha@xxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 19 +++++++++++++
drivers/gpu/drm/drm_atomic_helper.c | 9 ++++++
drivers/gpu/drm/drm_color_mgmt.c | 55 +++++++++++++++++++++++++++++++++++--
drivers/gpu/drm/drm_plane.c | 6 ++++
include/drm/drm_color_mgmt.h | 3 ++
include/drm/drm_plane.h | 4 +++
include/uapi/drm/drm_mode.h | 12 ++++++++
7 files changed, 106 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index bcef93d..87a2d55 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -733,6 +733,7 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
struct drm_device *dev = plane->dev;
struct drm_mode_config *config = &dev->mode_config;
int ret;
+ bool dummy;
if (property == config->prop_fb_id) {
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val);
@@ -777,6 +778,18 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
state->zpos = val;
} else if (property == plane->ycbcr_encoding_property) {
state->ycbcr_encoding = val;
+ } else if (property == plane->ycbcr_decode_csc_property) {
+ ret = drm_atomic_replace_property_blob_from_id(dev,
+ &state->ycbcr_decode_csc, val,
+ sizeof(struct drm_ycbcr_decode_csc),
+ &dummy);
+ return ret;
+ } else if (property == plane->ycbcr_csc_preoffset_property) {
+ ret = drm_atomic_replace_property_blob_from_id(dev,
+ &state->ycbcr_csc_preoffset, val,
+ sizeof(struct drm_ycbcr_csc_preoffset),
+ &dummy);
+ return ret;
} else if (plane->funcs->atomic_set_property) {
return plane->funcs->atomic_set_property(plane, state,
property, val);
@@ -839,6 +852,12 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
*val = state->zpos;
} else if (property == plane->ycbcr_encoding_property) {
*val = state->ycbcr_encoding;
+ } else if (property == plane->ycbcr_decode_csc_property) {
+ *val = state->ycbcr_decode_csc ?
+ state->ycbcr_decode_csc->base.id : 0;
+ } else if (property == plane->ycbcr_csc_preoffset_property) {
+ *val = state->ycbcr_csc_preoffset ?
+ state->ycbcr_csc_preoffset->base.id : 0;
} else if (plane->funcs->atomic_get_property) {
return plane->funcs->atomic_get_property(plane, state, property, val);
} else {
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 8be9719..6ecc32f 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -3238,6 +3238,12 @@ void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
{
memcpy(state, plane->state, sizeof(*state));
+ if (state->ycbcr_decode_csc)
+ drm_property_blob_get(state->ycbcr_decode_csc);
+
+ if (state->ycbcr_csc_preoffset)
+ drm_property_blob_get(state->ycbcr_csc_preoffset);
+
if (state->fb)
drm_framebuffer_get(state->fb);
@@ -3278,6 +3284,9 @@ struct drm_plane_state *
*/
void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
{
+ drm_property_blob_put(state->ycbcr_decode_csc);
+ drm_property_blob_put(state->ycbcr_csc_preoffset);
+
if (state->fb)
drm_framebuffer_put(state->fb);
diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c
index 245b14a..319ed46 100644
--- a/drivers/gpu/drm/drm_color_mgmt.c
+++ b/drivers/gpu/drm/drm_color_mgmt.c
@@ -95,8 +95,23 @@
*
* "YCBCR_ENCODING"
* Optional plane enum property to control YCbCr to RGB
- * conversion. The driver provides a subset of standard
- * enum values supported by the DRM plane.
+ * conversion. The driver provides a subset of standard enum
+ * values supported by the DRM plane. The possible encodings
+ * include the standard conversions and a possibility to select a
+ * custom conversion matrix and preoffset vector.
+ *
+ * "YCBCR_DECODE_CSC"
+ * Optional plane property blob to set YCbCr to RGB conversion
+ * matrix. The blob contains struct drm_ycbcr_to_rgb_csc which is
+ * defined in uapi/drm/drm_mode.h. Whether this property is
+ * used depends on the value of YCBCR_ENCODING property.
+ *
+ * "YCBCR_CSC_PREOFFSET"
+ * Optional plane property blob to configure YCbCr offset before
+ * YCbCr to RGB CSC is applied. The blob contains struct
+ * drm_ycbcr_csc_preoffset which is defined in
+ * uapi/drm/drm_mode.h. Whether this property is used depends on
+ * the value of YCBCR_ENCODING property.
*/
/**
@@ -351,6 +366,9 @@ int drm_mode_gamma_get_ioctl(struct drm_device *dev,
[DRM_PLANE_YCBCR_BT601_LIMITED_RANGE] = "BT.601 limited range",
[DRM_PLANE_YCBCR_BT709_LIMITED_RANGE] = "BT.709 limited range",
[DRM_PLANE_YCBCR_BT2020_LIMITED_RANGE] = "BT.2020 limited range",
+ [DRM_PLANE_YCBCR_CSC_FULL_RANGE] = "YCbCr CSC full range",
+ [DRM_PLANE_YCBCR_CSC_LIMITED_RANGE] = "YCbCr CSC limited range",
+ [DRM_PLANE_YCBCR_CSC_PREOFFSET] = "YCbCr CSC and preoffset vector",
};
/**
@@ -363,6 +381,8 @@ int drm_mode_gamma_get_ioctl(struct drm_device *dev,
* drm_plane object. The supported encodings should be provided in the
* enum_list parameter. The enum_list parameter should not contain the
* enum names, because the standard names are added by this function.
+ * YCBCR_DECODE_CSC and YCBCR_CSC_PREOFFSET properties are created
+ * based on the provided enum_list.
*/
int drm_plane_create_ycbcr_properties(struct drm_plane *plane,
struct drm_prop_enum_list *enum_list,
@@ -371,6 +391,8 @@ int drm_plane_create_ycbcr_properties(struct drm_plane *plane,
{
struct drm_device *dev = plane->dev;
struct drm_property *prop;
+ bool ycbcr_decode_csc_create = false;
+ bool ycbcr_csc_preoffset_create = false;
unsigned int i;
if (WARN_ON(plane->ycbcr_encoding_property != NULL))
@@ -380,6 +402,15 @@ int drm_plane_create_ycbcr_properties(struct drm_plane *plane,
enum drm_plane_ycbcr_encoding encoding = enum_list[i].type;
enum_list[i].name = ycbcr_encoding_name[encoding];
+
+ if (encoding == DRM_PLANE_YCBCR_CSC_FULL_RANGE ||
+ encoding == DRM_PLANE_YCBCR_CSC_LIMITED_RANGE)
+ ycbcr_decode_csc_create = true;
+
+ if (encoding == DRM_PLANE_YCBCR_CSC_PREOFFSET) {
+ ycbcr_decode_csc_create = true;
+ ycbcr_csc_preoffset_create = true;
+ }
}
prop = drm_property_create_enum(dev, DRM_MODE_PROP_ATOMIC,
@@ -390,5 +421,25 @@ int drm_plane_create_ycbcr_properties(struct drm_plane *plane,
plane->ycbcr_encoding_property = prop;
drm_object_attach_property(&plane->base, prop, default_mode);
+ if (ycbcr_decode_csc_create) {
+ prop = drm_property_create(dev, DRM_MODE_PROP_ATOMIC |
+ DRM_MODE_PROP_BLOB,
+ "YCBCR_DECODE_CSC", 0);
+ if (!prop)
+ return -ENOMEM;
+ plane->ycbcr_decode_csc_property = prop;
+ drm_object_attach_property(&plane->base, prop, 0);
+ }
+
+ if (ycbcr_csc_preoffset_create) {
+ prop = drm_property_create(dev, DRM_MODE_PROP_ATOMIC |
+ DRM_MODE_PROP_BLOB,
+ "YCBCR_CSC_PREOFFSET", 0);
+ if (!prop)
+ return -ENOMEM;
+ plane->ycbcr_csc_preoffset_property = prop;
+ drm_object_attach_property(&plane->base, prop, 0);
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 007c4d7..d10c942 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -247,6 +247,12 @@ void drm_plane_cleanup(struct drm_plane *plane)
if (plane->ycbcr_encoding_property)
drm_property_destroy(dev, plane->ycbcr_encoding_property);
+ if (plane->ycbcr_decode_csc_property)
+ drm_property_destroy(dev, plane->ycbcr_decode_csc_property);
+
+ if (plane->ycbcr_csc_preoffset_property)
+ drm_property_destroy(dev, plane->ycbcr_csc_preoffset_property);
+
memset(plane, 0, sizeof(*plane));
}
EXPORT_SYMBOL(drm_plane_cleanup);
diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h
index 1771394..bdfd37e 100644
--- a/include/drm/drm_color_mgmt.h
+++ b/include/drm/drm_color_mgmt.h
@@ -44,6 +44,9 @@ enum drm_plane_ycbcr_encoding {
DRM_PLANE_YCBCR_BT601_LIMITED_RANGE,
DRM_PLANE_YCBCR_BT709_LIMITED_RANGE,
DRM_PLANE_YCBCR_BT2020_LIMITED_RANGE,
+ DRM_PLANE_YCBCR_CSC_FULL_RANGE,
+ DRM_PLANE_YCBCR_CSC_LIMITED_RANGE,
+ DRM_PLANE_YCBCR_CSC_PREOFFSET,
};
int drm_plane_create_ycbcr_properties(struct drm_plane *plane,
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 4d0510f..63b1e0c 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -115,6 +115,8 @@ struct drm_plane_state {
/* YCbCr to RGB conversion */
enum drm_plane_ycbcr_encoding ycbcr_encoding;
+ struct drm_property_blob *ycbcr_decode_csc;
+ struct drm_property_blob *ycbcr_csc_preoffset;
/* Clipped coordinates */
struct drm_rect src, dst;
@@ -529,6 +531,8 @@ struct drm_plane {
struct drm_property *rotation_property;
struct drm_property *ycbcr_encoding_property;
+ struct drm_property *ycbcr_decode_csc_property;
+ struct drm_property *ycbcr_csc_preoffset_property;
};
#define obj_to_plane(x) container_of(x, struct drm_plane, base)
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 8c67fc0..8c9568d 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -543,6 +543,18 @@ struct drm_color_lut {
__u16 reserved;
};
+struct drm_ycbcr_decode_csc {
+ /* Conversion matrix in 2-complement s32.32 format. */
+ __s64 ry, rcb, rcr;
+ __s64 gy, gcb, gcr;
+ __s64 by, bcb, bcr;
+};
+
+struct drm_ycbcr_csc_preoffset {
+ /* Offset vector in 2-complement s.32 format. */
+ __s32 y, cb, cr;
+};
+
#define DRM_MODE_PAGE_FLIP_EVENT 0x01
#define DRM_MODE_PAGE_FLIP_ASYNC 0x02
#define DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE 0x4
--
1.9.1
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