[PATCH 47/72] imx-drm: ipuv3-plane: Implement global alpha and colorkey properties
Steve Longerbeam
slongerbeam at gmail.com
Fri Oct 31 15:54:30 PDT 2014
Add support for setting global alpha and colorkey in foreground planes
using plane properties. Background planes can also support these
properties if the background plane is initialized as not private.
Signed-off-by: Steve Longerbeam <steve_longerbeam at mentor.com>
---
drivers/staging/imx-drm/ipuv3-plane.c | 144 +++++++++++++++++++++++++++++++--
drivers/staging/imx-drm/ipuv3-plane.h | 7 ++
2 files changed, 146 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/imx-drm/ipuv3-plane.c b/drivers/staging/imx-drm/ipuv3-plane.c
index 5818249..1572c80 100644
--- a/drivers/staging/imx-drm/ipuv3-plane.c
+++ b/drivers/staging/imx-drm/ipuv3-plane.c
@@ -104,6 +104,7 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
uint32_t src_w, uint32_t src_h)
{
struct device *dev = ipu_plane->base.dev->dev;
+ bool is_bg = (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_BG);
int ret;
/* no scaling */
@@ -156,7 +157,6 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
ret);
return ret;
}
- ipu_dp_set_global_alpha(ipu_plane->dp, 1, 0, 1);
break;
case IPU_DP_FLOW_SYNC_FG:
ipu_dp_setup_channel(ipu_plane->dp,
@@ -166,6 +166,24 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
break;
}
+ if (ipu_plane->dp) {
+ ret = ipu_dp_set_global_alpha(ipu_plane->dp,
+ ipu_plane->global_alpha_en,
+ ipu_plane->global_alpha, is_bg);
+ if (ret) {
+ dev_err(dev, "set global alpha failed with %d\n", ret);
+ return ret;
+ }
+
+ ret = ipu_dp_set_chroma_key(ipu_plane->dp,
+ ipu_plane->colorkey_en,
+ ipu_plane->colorkey);
+ if (ret) {
+ dev_err(dev, "set colorkey failed with %d\n", ret);
+ return ret;
+ }
+ }
+
ret = ipu_dmfc_alloc_bandwidth(ipu_plane->dmfc,
calc_bandwidth(crtc_w, crtc_h,
calc_vref(mode)), crtc_w, 64);
@@ -329,13 +347,86 @@ static void ipu_plane_destroy(struct drm_plane *plane)
kfree(ipu_plane);
}
+static int ipu_plane_set_global_alpha(struct ipu_plane *ipu_plane,
+ u32 global_alpha)
+{
+ bool is_bg = (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_BG);
+ bool global_alpha_en;
+
+ if (!ipu_plane->dp)
+ return -EINVAL;
+
+ global_alpha_en = ((global_alpha & (1 << 8)) != 0);
+ global_alpha &= ~(1 << 8);
+
+ if (ipu_plane->global_alpha_en == global_alpha_en &&
+ ipu_plane->global_alpha == global_alpha)
+ return 0;
+
+ ipu_plane->global_alpha_en = global_alpha_en;
+ ipu_plane->global_alpha = global_alpha;
+
+ if (!ipu_plane->enabled)
+ return 0;
+
+ return ipu_dp_set_global_alpha(ipu_plane->dp,
+ ipu_plane->global_alpha_en,
+ ipu_plane->global_alpha, is_bg);
+}
+
+static int ipu_plane_set_colorkey(struct ipu_plane *ipu_plane,
+ u32 colorkey)
+{
+ bool colorkey_en;
+
+ if (!ipu_plane->dp)
+ return -EINVAL;
+
+ colorkey_en = ((colorkey & (1 << 24)) != 0);
+ colorkey &= ~(1 << 24);
+
+ if (ipu_plane->colorkey_en == colorkey_en &&
+ ipu_plane->colorkey == colorkey)
+ return 0;
+
+ ipu_plane->colorkey_en = colorkey_en;
+ ipu_plane->colorkey = colorkey;
+
+ if (!ipu_plane->enabled)
+ return 0;
+
+ return ipu_dp_set_chroma_key(ipu_plane->dp,
+ ipu_plane->colorkey_en,
+ ipu_plane->colorkey);
+}
+
+static int ipu_plane_set_property(struct drm_plane *plane,
+ struct drm_property *property,
+ uint64_t value)
+{
+ struct ipu_plane *ipu_plane = to_ipu_plane(plane);
+ int ret;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ if (property == ipu_plane->global_alpha_prop)
+ ret = ipu_plane_set_global_alpha(ipu_plane, value);
+ else if (property == ipu_plane->colorkey_prop)
+ ret = ipu_plane_set_colorkey(ipu_plane, value);
+ else
+ ret = -EINVAL;
+
+ return ret;
+}
+
static struct drm_plane_funcs ipu_plane_funcs = {
.update_plane = ipu_update_plane,
.disable_plane = ipu_disable_plane,
.destroy = ipu_plane_destroy,
+ .set_property = ipu_plane_set_property,
};
-struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
+struct ipu_plane *ipu_plane_init(struct drm_device *drm, struct ipu_soc *ipu,
int dma, int dp, unsigned int possible_crtcs,
bool priv)
{
@@ -355,15 +446,58 @@ struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
ipu_plane->dma = dma;
ipu_plane->dp_flow = dp;
- ret = drm_plane_init(dev, &ipu_plane->base, possible_crtcs,
+ ret = drm_plane_init(drm, &ipu_plane->base, possible_crtcs,
&ipu_plane_funcs, ipu_plane_formats,
ARRAY_SIZE(ipu_plane_formats),
priv);
if (ret) {
DRM_ERROR("failed to initialize plane\n");
- kfree(ipu_plane);
- return ERR_PTR(ret);
+ goto err_free;
}
+ /* default global alpha is enabled and completely opaque */
+ ipu_plane->global_alpha_en = true;
+ ipu_plane->global_alpha = 255;
+
+ /* for private planes, skip setting up properties */
+ if (priv)
+ return ipu_plane;
+
+ /*
+ * global alpha range is 0 - 255. Bit 8 is used as a
+ * flag to disable or enable global alpha.
+ */
+ ipu_plane->global_alpha_prop = drm_property_create_range(drm, 0,
+ "alpha",
+ 0, 0x1ff);
+ if (!ipu_plane->global_alpha_prop) {
+ DRM_ERROR("failed to create global alpha property\n");
+ ret = -ENOMEM;
+ goto err_free;
+ }
+
+ /*
+ * The color key is an RGB24 value. Bit 24 is used as a
+ * flag to disable or enable color keying.
+ */
+ ipu_plane->colorkey_prop = drm_property_create_range(drm, 0,
+ "colorkey",
+ 0, 0x01ffffff);
+ if (!ipu_plane->colorkey_prop) {
+ DRM_ERROR("failed to create colorkey property\n");
+ ret = -ENOMEM;
+ goto err_free;
+ }
+
+ drm_object_attach_property(&ipu_plane->base.base,
+ ipu_plane->global_alpha_prop,
+ 0x1ff);
+ drm_object_attach_property(&ipu_plane->base.base,
+ ipu_plane->colorkey_prop,
+ 0);
return ipu_plane;
+
+err_free:
+ kfree(ipu_plane);
+ return ERR_PTR(ret);
}
diff --git a/drivers/staging/imx-drm/ipuv3-plane.h b/drivers/staging/imx-drm/ipuv3-plane.h
index c0aae5b..b4daee5 100644
--- a/drivers/staging/imx-drm/ipuv3-plane.h
+++ b/drivers/staging/imx-drm/ipuv3-plane.h
@@ -27,6 +27,13 @@ struct ipu_plane {
int x;
int y;
+ struct drm_property *global_alpha_prop;
+ struct drm_property *colorkey_prop;
+ bool global_alpha_en;
+ u32 global_alpha;
+ bool colorkey_en;
+ u32 colorkey;
+
bool enabled;
};
--
1.7.9.5
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