[RFC PATCH v4 20/42] drm/colorop: Add 3x4 CTM type
Harry Wentland
harry.wentland at amd.com
Mon Feb 26 21:10:34 UTC 2024
This type is used to support a 3x4 matrix in colorops. A 3x4
matrix uses the last column as a "bias" column. Some HW exposes
support for 3x4. The calculation looks like:
out matrix in
|R| |0 1 2 3 | | R |
|G| = |4 5 6 7 | x | G |
|B| |8 9 10 11| | B |
|1.0|
This is also the first colorop where we need a blob property to
program the property. For that we'll introduce a new DATA
property that can be used by all colorop TYPEs requiring a
blob. The way a DATA blob is read depends on the TYPE of
the colorop.
We only create the DATA property for property types that
need it.
v4:
- Create helper function for creating 3x4 CTM colorop
- Fix CTM indexes in comment (Pekka)
Signed-off-by: Harry Wentland <harry.wentland at amd.com>
---
drivers/gpu/drm/drm_atomic.c | 14 ++++++++++-
drivers/gpu/drm/drm_atomic_uapi.c | 29 ++++++++++++++++++++++
drivers/gpu/drm/drm_colorop.c | 40 +++++++++++++++++++++++++++++++
include/drm/drm_colorop.h | 19 +++++++++++++++
include/uapi/drm/drm_mode.h | 9 ++++++-
5 files changed, 109 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index d82858dabf06..6e736ffa6d7c 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -793,7 +793,19 @@ static void drm_atomic_colorop_print_state(struct drm_printer *p,
drm_printf(p, "colorop[%u]:\n", colorop->base.id);
drm_printf(p, "\ttype=%s\n", drm_get_colorop_type_name(colorop->type));
drm_printf(p, "\tbypass=%u\n", state->bypass);
- drm_printf(p, "\tcurve_1d_type=%s\n", drm_get_colorop_curve_1d_type_name(state->curve_1d_type));
+
+ switch (colorop->type) {
+ case DRM_COLOROP_1D_CURVE:
+ drm_printf(p, "\tcurve_1d_type=%s\n",
+ drm_get_colorop_curve_1d_type_name(state->curve_1d_type));
+ break;
+ case DRM_COLOROP_CTM_3X4:
+ drm_printf(p, "\tdata blob id=%d\n", state->data ? state->data->base.id : 0);
+ break;
+ default:
+ break;
+ }
+
drm_printf(p, "\tnext=%d\n", colorop->next ? colorop->next->base.id : 0);
}
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index ff258b34544e..23b248987a7c 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -691,6 +691,30 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
return 0;
}
+static int drm_atomic_color_set_data_property(struct drm_colorop *colorop,
+ struct drm_colorop_state *state,
+ struct drm_property *property, uint64_t val)
+{
+ ssize_t elem_size = -1;
+ ssize_t size = -1;
+ bool replaced = false;
+
+ switch (colorop->type) {
+ case DRM_COLOROP_CTM_3X4:
+ size = sizeof(struct drm_color_ctm_3x4);
+ break;
+ default:
+ /* should never get here */
+ return -EINVAL;
+ }
+
+ return drm_property_replace_blob_from_id(colorop->dev,
+ &state->data,
+ val,
+ size,
+ elem_size,
+ &replaced);
+}
static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
struct drm_colorop_state *state, struct drm_file *file_priv,
@@ -700,6 +724,9 @@ static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
state->bypass = val;
} else if (property == colorop->curve_1d_type_property) {
state->curve_1d_type = val;
+ } else if (property == colorop->data_property) {
+ return drm_atomic_color_set_data_property(colorop,
+ state, property, val);
} else {
drm_dbg_atomic(colorop->dev,
"[COLOROP:%d:%d] unknown property [PROP:%d:%s]]\n",
@@ -722,6 +749,8 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
*val = state->bypass;
} else if (property == colorop->curve_1d_type_property) {
*val = state->curve_1d_type;
+ } else if (property == colorop->data_property) {
+ *val = (state->data) ? state->data->base.id : 0;
} else {
return -EINVAL;
}
diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c
index 71c2286333a1..77777baa1eba 100644
--- a/drivers/gpu/drm/drm_colorop.c
+++ b/drivers/gpu/drm/drm_colorop.c
@@ -34,6 +34,7 @@
static const struct drm_prop_enum_list drm_colorop_type_enum_list[] = {
{ DRM_COLOROP_1D_CURVE, "1D Curve" },
+ { DRM_COLOROP_CTM_3X4, "3x4 Matrix"}
};
static const char * const colorop_curve_1d_type_names[] = {
@@ -93,6 +94,7 @@ int drm_colorop_init(struct drm_device *dev, struct drm_colorop *colorop,
colorop->bypass_property,
1);
+ /* next */
prop = drm_property_create_object(dev, DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ATOMIC,
"NEXT", DRM_MODE_OBJECT_COLOROP);
if (!prop)
@@ -157,6 +159,43 @@ int drm_colorop_curve_1d_init(struct drm_device *dev, struct drm_colorop *coloro
}
EXPORT_SYMBOL(drm_colorop_curve_1d_init);
+static int drm_colorop_create_data_prop(struct drm_device *dev, struct drm_colorop *colorop)
+{
+ struct drm_property *prop;
+
+ /* data */
+ prop = drm_property_create(dev, DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
+ "DATA", 0);
+ if (!prop)
+ return -ENOMEM;
+
+ colorop->data_property = prop;
+ drm_object_attach_property(&colorop->base,
+ colorop->data_property,
+ 0);
+
+ return 0;
+}
+
+int drm_colorop_ctm_3x4_init(struct drm_device *dev, struct drm_colorop *colorop,
+ struct drm_plane *plane)
+{
+ int ret;
+
+ ret = drm_colorop_init(dev, colorop, plane, DRM_COLOROP_CTM_3X4);
+ if (ret)
+ return ret;
+
+ ret = drm_colorop_create_data_prop(dev, colorop);
+ if (ret)
+ return ret;
+
+ drm_colorop_reset(colorop);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_colorop_ctm_3x4_init);
+
static void __drm_atomic_helper_colorop_duplicate_state(struct drm_colorop *colorop,
struct drm_colorop_state *state)
{
@@ -258,6 +297,7 @@ EXPORT_SYMBOL(drm_colorop_reset);
static const char * const colorop_type_name[] = {
[DRM_COLOROP_1D_CURVE] = "1D Curve",
+ [DRM_COLOROP_CTM_3X4] = "3x4 Matrix"
};
/**
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index e85ed5aa68d0..4aee29e161d6 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -60,6 +60,14 @@ struct drm_colorop_state {
*/
enum drm_colorop_curve_1d_type curve_1d_type;
+ /**
+ * @data:
+ *
+ * Data blob for any TYPE that requires such a blob. The
+ * interpretation of the blob is TYPE-specific.
+ */
+ struct drm_property_blob *data;
+
/** @state: backpointer to global drm_atomic_state */
struct drm_atomic_state *state;
};
@@ -167,6 +175,17 @@ struct drm_colorop {
*/
struct drm_property *curve_1d_type_property;
+ /**
+ * @data:
+ *
+ * blob property for any TYPE that requires a blob of data,
+ * such as 1DLUT, CTM, 3DLUT, etc.
+ *
+ * The way this blob is interpreted depends on the TYPE of
+ * this
+ */
+ struct drm_property *data_property;
+
/**
* @next_property
*
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 0cbd6bef52bc..1a8ea7934fbe 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -851,6 +851,12 @@ struct drm_color_ctm_3x4 {
/*
* Conversion matrix with 3x4 dimensions in S31.32 sign-magnitude
* (not two's complement!) format.
+ *
+ * out matrix in
+ * |R| |0 1 2 3 | | R |
+ * |G| = |4 5 6 7 | x | G |
+ * |B| |8 9 10 11| | B |
+ * |1.0|
*/
__u64 matrix[12];
};
@@ -867,7 +873,8 @@ struct drm_color_lut {
};
enum drm_colorop_type {
- DRM_COLOROP_1D_CURVE
+ DRM_COLOROP_1D_CURVE,
+ DRM_COLOROP_CTM_3X4,
};
/**
--
2.44.0
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