Add a helper function capturing the first connected live display layer
discovery logic.
Signed-off-by: Anatoliy Klymenko <anatoliy.klymenko@xxxxxxx>
Reviewed-by: Tomi Valkeinen <tomi.valkainen@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/xlnx/zynqmp_dp.c | 37 +++++++++++++++++++++++--------------
1 file changed, 23 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 04b6bcac3b07..7faeb010e1ae 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -1276,28 +1276,40 @@ static void zynqmp_dp_encoder_mode_set_stream(struct zynqmp_dp *dp,
* DISP Configuration
*/
+/**
+ * zynqmp_dp_disp_connected_live_layer - Return the first connected live layer
+ * @dp: DisplayPort IP core structure
+ *
+ * Return: The first connected live display layer or NULL if none of the live
+ * layers are connected.
+ */
+static struct zynqmp_disp_layer *
+zynqmp_dp_disp_connected_live_layer(struct zynqmp_dp *dp)
+{
+ if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
+ return dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_VID];
+ else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
+ return dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX];
+ else
+ return NULL;
+}
+
static void zynqmp_dp_disp_enable(struct zynqmp_dp *dp,
struct drm_bridge_state *old_bridge_state)
{
- enum zynqmp_dpsub_layer_id layer_id;
struct zynqmp_disp_layer *layer;
const struct drm_format_info *info;
- if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
- layer_id = ZYNQMP_DPSUB_LAYER_VID;
- else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
- layer_id = ZYNQMP_DPSUB_LAYER_GFX;
- else
+ layer = zynqmp_dp_disp_connected_live_layer(dp);
+ if (!layer)
return;
- layer = dp->dpsub->layers[layer_id];
-
/* TODO: Make the format configurable. */
info = drm_format_info(DRM_FORMAT_YUV422);
zynqmp_disp_layer_set_format(layer, info);
zynqmp_disp_layer_enable(layer);
- if (layer_id == ZYNQMP_DPSUB_LAYER_GFX)
+ if (layer == dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX])
zynqmp_disp_blend_set_global_alpha(dp->dpsub->disp, true, 255);
else
zynqmp_disp_blend_set_global_alpha(dp->dpsub->disp, false, 0);
@@ -1310,11 +1322,8 @@ static void zynqmp_dp_disp_disable(struct zynqmp_dp *dp,
{
struct zynqmp_disp_layer *layer;
- if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
- layer = dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_VID];
- else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
- layer = dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX];
- else
+ layer = zynqmp_dp_disp_connected_live_layer(dp);
+ if (!layer)
return;
zynqmp_disp_disable(dp->dpsub->disp);
--
2.25.1
