[PATCH v5 09/44] drm/colorop: Add BYPASS property

[Harry Wentland]

We want to be able to bypass each colorop at all times.
Introduce a new BYPASS boolean property for this.

v5:
 - Drop TODO

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c |  6 +++++-
 drivers/gpu/drm/drm_colorop.c     | 15 +++++++++++++++
 include/drm/drm_colorop.h         | 20 ++++++++++++++++++++
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index b867bff49f67..419813be21b0 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -648,7 +648,9 @@ static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
 		struct drm_colorop_state *state, struct drm_file *file_priv,
 		struct drm_property *property, uint64_t val)
 {
-	if (property == colorop->curve_1d_type_property) {
+	if (property == colorop->bypass_property) {
+		state->bypass = val;
+	} else if (property == colorop->curve_1d_type_property) {
 		state->curve_1d_type = val;
 	} else {
 		drm_dbg_atomic(colorop->dev,
@@ -668,6 +670,8 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
 {
 	if (property == colorop->type_property) {
 		*val = colorop->type;
+	} else if (property == colorop->bypass_property) {
+		*val = state->bypass;
 	} else if (property == colorop->curve_1d_type_property) {
 		*val = state->curve_1d_type;
 	} else {
diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c
index 5b844daabd44..054e7f01151b 100644
--- a/drivers/gpu/drm/drm_colorop.c
+++ b/drivers/gpu/drm/drm_colorop.c
@@ -109,6 +109,17 @@ static int drm_colorop_init(struct drm_device *dev, struct drm_colorop *colorop,
 				   colorop->type_property,
 				   colorop->type);
 
+	/* bypass */
+	prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
+					"BYPASS");
+	if (!prop)
+		return -ENOMEM;
+
+	colorop->bypass_property = prop;
+	drm_object_attach_property(&colorop->base,
+				   colorop->bypass_property,
+				   1);
+
 	return ret;
 }
 
@@ -166,6 +177,7 @@ int drm_colorop_curve_1d_init(struct drm_device *dev, struct drm_colorop *coloro
 	/* initialize 1D curve only attribute */
 	prop = drm_property_create_enum(dev, DRM_MODE_PROP_ATOMIC, "CURVE_1D_TYPE",
 					enum_list, len);
+
 	if (!prop)
 		return -ENOMEM;
 
@@ -182,6 +194,8 @@ static void __drm_atomic_helper_colorop_duplicate_state(struct drm_colorop *colo
 							struct drm_colorop_state *state)
 {
 	memcpy(state, colorop->state, sizeof(*state));
+
+	state->bypass = true;
 }
 
 struct drm_colorop_state *
@@ -220,6 +234,7 @@ static void __drm_colorop_state_reset(struct drm_colorop_state *colorop_state,
 	u64 val;
 
 	colorop_state->colorop = colorop;
+	colorop_state->bypass = true;
 
 	if (colorop->curve_1d_type_property) {
 		drm_object_property_get_default_value(&colorop->base,
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index dd6943117461..7ecf4e3dca4f 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -72,6 +72,14 @@ struct drm_colorop_state {
 
 	/* colorop properties */
 
+	/**
+	 * @bypass:
+	 *
+	 * True if colorop shall be bypassed. False if colorop is
+	 * enabled.
+	 */
+	bool bypass;
+
 	/**
 	 * @curve_1d_type:
 	 *
@@ -150,6 +158,18 @@ struct drm_colorop {
 	 */
 	struct drm_property *type_property;
 
+	/**
+	 * @bypass_property:
+	 *
+	 * Boolean property to control enablement of the color
+	 * operation. Setting bypass to "true" shall always be supported
+	 * in order to allow compositors to quickly fall back to
+	 * alternate methods of color processing. This is important
+	 * since setting color operations can fail due to unique
+	 * HW constraints.
+	 */
+	struct drm_property *bypass_property;
+
 	/**
 	 * @curve_1d_type_property:
 	 *
-- 
2.46.0