[PATCH 2/2] drm: rcar-du: Add support for colorkey alpha blending
agheorghe
Alexandru_Gheorghe at mentor.com
Thu May 4 10:53:33 UTC 2017
Add two new plane properties colorkey and colorkey_alpha for rcar gen3.
* colorkey:
- used for specifying the color on which the filtering is done.
- bits 0 to 23 are interpreted as RGB888 format, in case we are
dealing with an YCbCr format, only the Y componenet is
compared and it is represented by the G bits from RGB888
format.
- bit 24 tells if it is enabled or not.
* colorkey_alpha:
- the alpha to be set for matching pixels, in case it is
missing the pixels will be made transparent
Signed-off-by: agheorghe <Alexandru_Gheorghe at mentor.com>
---
drivers/gpu/drm/rcar-du/rcar_du_drv.h | 1 +
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 8 ++++++++
drivers/gpu/drm/rcar-du/rcar_du_plane.c | 3 ---
drivers/gpu/drm/rcar-du/rcar_du_plane.h | 6 ++++++
drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 22 ++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_vsp.h | 5 +++++
6 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 91e8fc5..1cb92e3 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -98,6 +98,7 @@ struct rcar_du_device {
struct {
struct drm_property *alpha;
struct drm_property *colorkey;
+ struct drm_property *colorkey_alpha;
} props;
unsigned int dpad0_source;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 1cc88ed..a733fa2 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -630,6 +630,14 @@ static int rcar_du_properties_init(struct rcar_du_device *rcdu)
if (rcdu->props.colorkey == NULL)
return -ENOMEM;
+ if (rcdu->info->gen == 3) {
+ rcdu->props.colorkey_alpha =
+ drm_property_create_range(rcdu->ddev, 0,
+ "colorkey_alpha", 0, 255);
+ if (!rcdu->props.colorkey_alpha)
+ return -ENOMEM;
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index e408aa3..df689c4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -307,9 +307,6 @@ int rcar_du_atomic_check_planes(struct drm_device *dev,
* Plane Setup
*/
-#define RCAR_DU_COLORKEY_NONE (0 << 24)
-#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
-#define RCAR_DU_COLORKEY_MASK (1 << 24)
static void rcar_du_plane_write(struct rcar_du_group *rgrp,
unsigned int index, u32 reg, u32 data)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
index c1de338..9e7c3b6 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -49,6 +49,12 @@ static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
return container_of(plane, struct rcar_du_plane, plane);
}
+#define RCAR_DU_COLORKEY_NONE (0 << 24)
+#define RCAR_DU_COLORKEY_MASK BIT(24)
+#define RCAR_DU_COLORKEY_EN_MASK RCAR_DU_COLORKEY_MASK
+#define RCAR_DU_COLORKEY_COLOR_MASK 0xFFFFFF
+#define RCAR_DU_COLORKEY_ALPHA_MASK 0xFF
+
/**
* struct rcar_du_plane_state - Driver-specific plane state
* @state: base DRM plane state
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 4b460d4..b223be1 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -180,6 +180,11 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
.pitch = fb->pitches[0],
.alpha = state->alpha,
.zpos = state->state.zpos,
+ .colorkey = state->colorkey & RCAR_DU_COLORKEY_COLOR_MASK,
+ .colorkey_en =
+ ((state->colorkey & RCAR_DU_COLORKEY_EN_MASK) != 0),
+ .colorkey_alpha =
+ (state->colorkey_alpha & RCAR_DU_COLORKEY_ALPHA_MASK),
};
unsigned int i;
@@ -379,6 +384,8 @@ static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
return;
state->alpha = 255;
+ state->colorkey = RCAR_DU_COLORKEY_NONE;
+ state->colorkey_alpha = 0;
state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
@@ -394,6 +401,10 @@ static int rcar_du_vsp_plane_atomic_set_property(struct drm_plane *plane,
if (property == rcdu->props.alpha)
rstate->alpha = val;
+ else if (property == rcdu->props.colorkey)
+ rstate->colorkey = val;
+ else if (property == rcdu->props.colorkey_alpha)
+ rstate->colorkey_alpha = val;
else
return -EINVAL;
@@ -410,6 +421,10 @@ static int rcar_du_vsp_plane_atomic_get_property(struct drm_plane *plane,
if (property == rcdu->props.alpha)
*val = rstate->alpha;
+ else if (property == rcdu->props.colorkey)
+ *val = rstate->colorkey;
+ else if (property == rcdu->props.colorkey_alpha)
+ *val = rstate->colorkey_alpha;
else
return -EINVAL;
@@ -633,6 +648,13 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp)
drm_object_attach_property(&plane->plane.base,
rcdu->props.alpha, 255);
+ drm_object_attach_property(&plane->plane.base,
+ rcdu->props.colorkey,
+ RCAR_DU_COLORKEY_NONE);
+ if (rcdu->props.colorkey_alpha)
+ drm_object_attach_property(&plane->plane.base,
+ rcdu->props.colorkey_alpha,
+ 0);
drm_plane_create_zpos_property(&plane->plane, 1, 1,
vsp->num_planes - 1);
}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
index 3fd9cef..1543503 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h
@@ -47,6 +47,9 @@ static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
* @sg_tables: scatter-gather tables for the frame buffer memory
* @alpha: value of the plane alpha property
* @zpos: value of the plane zpos property
+ * @colorkey: value of the color for which to apply colorkey_alpha, bit 24
+ * tells if it is enabled or not
+ * @colorkey_alpha: alpha to be used for pixels with color equal to colorkey
*/
struct rcar_du_vsp_plane_state {
struct drm_plane_state state;
@@ -56,6 +59,8 @@ struct rcar_du_vsp_plane_state {
unsigned int alpha;
unsigned int zpos;
+ u32 colorkey;
+ u32 colorkey_alpha;
};
static inline struct rcar_du_vsp_plane_state *
--
1.9.1
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