To support multiple display pipelines, we would have multiple crtcs,
with one or more planes bound to them. Obviously having hardcoded
values for the drm_plane .possible_crtcs field is not going to work.
For primary and cursor planes, the value is set by
drm_crtc_init_with_planes. We just need to set it for overlay planes.
We also fix the value set for the RGB encoder, by referencing the
crtc set in sun4i_drv.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
drivers/gpu/drm/sun4i/sun4i_crtc.c | 9 +++++++++
drivers/gpu/drm/sun4i/sun4i_layer.c | 3 ++-
drivers/gpu/drm/sun4i/sun4i_rgb.c | 3 ++-
3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c
b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index cb1a901bc389..4a30932643c3 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -166,5 +166,14 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm)
scrtc->crtc.port = of_graph_get_port_by_id(drv->tcon->dev->of_node,
1);
+ /* Set possible_crtcs to this crtc for overlay planes */
+ for (i = 0; scrtc->layers[i]; i++) {
+ uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
+ struct sun4i_layer *layer = scrtc->layers[i];
+
+ if (layer->plane.type == DRM_PLANE_TYPE_OVERLAY)
+ layer->plane.possible_crtcs = possible_crtcs;
+ }
+
return scrtc;
}
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c
b/drivers/gpu/drm/sun4i/sun4i_layer.c
index 9c0baee25fae..431e13362b62 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -114,7 +114,8 @@ static struct sun4i_layer *sun4i_layer_init_one(struct
drm_device *drm,
if (!layer)
return ERR_PTR(-ENOMEM);
- ret = drm_universal_plane_init(drm, &layer->plane, BIT(0),
+ /* possible crtcs are set later */
+ ret = drm_universal_plane_init(drm, &layer->plane, 0,
&sun4i_backend_layer_funcs,
plane->formats, plane->nformats,
plane->type, NULL);
diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c
b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index f5e86fe7750e..fc7f7467d120 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -17,6 +17,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_panel.h>
+#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sun4i_tcon.h"
#include "sun4i_rgb.h"
@@ -237,7 +238,7 @@ int sun4i_rgb_init(struct drm_device *drm)
}
/* The RGB encoder can only work with the TCON channel 0 */
- rgb->encoder.possible_crtcs = BIT(0);
+ rgb->encoder.possible_crtcs = BIT(drm_crtc_index(&tcon->crtc->crtc));
if (!IS_ERR(tcon->panel)) {
drm_connector_helper_add(&rgb->connector,
--
2.11.0
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