v4l: vsp1: Add pipe index argument to the VSP-DU API

In the H3 ES2.0 SoC the VSP2-DL instance has two connections to DU
channels that need to be configured independently. Extend the VSP-DU API
with a pipeline index to identify which pipeline the caller wants to
operate on.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/gpu/drm/rcar-du/rcar_du_vsp.c

@@ -81,22 +81,22 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
 	 */
 	crtc->group->need_restart = true;
 
-	vsp1_du_setup_lif(crtc->vsp->vsp, &cfg);
+	vsp1_du_setup_lif(crtc->vsp->vsp, 0, &cfg);
 }
 
 void rcar_du_vsp_disable(struct rcar_du_crtc *crtc)
 {
-	vsp1_du_setup_lif(crtc->vsp->vsp, NULL);
+	vsp1_du_setup_lif(crtc->vsp->vsp, 0, NULL);
 }
 
 void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc)
 {
-	vsp1_du_atomic_begin(crtc->vsp->vsp);
+	vsp1_du_atomic_begin(crtc->vsp->vsp, 0);
 }
 
 void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc)
 {
-	vsp1_du_atomic_flush(crtc->vsp->vsp);
+	vsp1_du_atomic_flush(crtc->vsp->vsp, 0);
 }
 
 /* Keep the two tables in sync. */
@@ -192,7 +192,7 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
 		}
 	}
 
-	vsp1_du_atomic_update(plane->vsp->vsp, plane->index, &cfg);
+	vsp1_du_atomic_update(plane->vsp->vsp, 0, plane->index, &cfg);
 }
 
 static int rcar_du_vsp_plane_prepare_fb(struct drm_plane *plane,
@@ -292,7 +292,7 @@ static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane,
 	if (plane->state->crtc)
 		rcar_du_vsp_plane_setup(rplane);
 	else
-		vsp1_du_atomic_update(rplane->vsp->vsp, rplane->index, NULL);
+		vsp1_du_atomic_update(rplane->vsp->vsp, 0, rplane->index, NULL);
 }
 
 static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = {

drivers/media/platform/vsp1/vsp1_drm.c

@@ -58,12 +58,16 @@ EXPORT_SYMBOL_GPL(vsp1_du_init);
 /**
  * vsp1_du_setup_lif - Setup the output part of the VSP pipeline
  * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
  * @cfg: the LIF configuration
  *
  * Configure the output part of VSP DRM pipeline for the given frame @cfg.width
  * and @cfg.height. This sets up formats on the BRU source pad, the WPF0 sink
  * and source pads, and the LIF sink pad.
  *
+ * The @pipe_index argument selects which DRM pipeline to setup. The number of
+ * available pipelines depend on the VSP instance.
+ *
  * As the media bus code on the BRU source pad is conditioned by the
  * configuration of the BRU sink 0 pad, we also set up the formats on all BRU
  * sinks, even if the configuration will be overwritten later by
@@ -72,7 +76,8 @@ EXPORT_SYMBOL_GPL(vsp1_du_init);
  *
  * Return 0 on success or a negative error code on failure.
  */
-int vsp1_du_setup_lif(struct device *dev, const struct vsp1_du_lif_config *cfg)
+int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
+		      const struct vsp1_du_lif_config *cfg)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 	struct vsp1_pipeline *pipe = &vsp1->drm->pipe;
@@ -81,6 +86,9 @@ int vsp1_du_setup_lif(struct device *dev, const struct vsp1_du_lif_config *cfg)
 	unsigned int i;
 	int ret;
 
+	if (pipe_index > 0)
+		return -EINVAL;
+
 	if (!cfg) {
 		/*
 		 * NULL configuration means the CRTC is being disabled, stop
@@ -232,8 +240,9 @@ EXPORT_SYMBOL_GPL(vsp1_du_setup_lif);
 /**
  * vsp1_du_atomic_begin - Prepare for an atomic update
  * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
  */
-void vsp1_du_atomic_begin(struct device *dev)
+void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 	struct vsp1_pipeline *pipe = &vsp1->drm->pipe;
@@ -245,6 +254,7 @@ EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin);
 /**
  * vsp1_du_atomic_update - Setup one RPF input of the VSP pipeline
  * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
  * @rpf_index: index of the RPF to setup (0-based)
  * @cfg: the RPF configuration
  *
@@ -271,7 +281,8 @@ EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin);
  *
  * Return 0 on success or a negative error code on failure.
  */
-int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
+int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
+			  unsigned int rpf_index,
 			  const struct vsp1_du_atomic_config *cfg)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
@@ -437,8 +448,9 @@ static unsigned int rpf_zpos(struct vsp1_device *vsp1, struct vsp1_rwpf *rpf)
 /**
  * vsp1_du_atomic_flush - Commit an atomic update
  * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
  */
-void vsp1_du_atomic_flush(struct device *dev)
+void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 	struct vsp1_pipeline *pipe = &vsp1->drm->pipe;

include/media/vsp1.h

@@ -38,7 +38,8 @@ struct vsp1_du_lif_config {
 	void *callback_data;
 };
 
-int vsp1_du_setup_lif(struct device *dev, const struct vsp1_du_lif_config *cfg);
+int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
+		      const struct vsp1_du_lif_config *cfg);
 
 struct vsp1_du_atomic_config {
 	u32 pixelformat;
@@ -50,10 +51,11 @@ struct vsp1_du_atomic_config {
 	unsigned int zpos;
 };
 
-void vsp1_du_atomic_begin(struct device *dev);
-int vsp1_du_atomic_update(struct device *dev, unsigned int rpf,
+void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index);
+int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
+			  unsigned int rpf,
 			  const struct vsp1_du_atomic_config *cfg);
-void vsp1_du_atomic_flush(struct device *dev);
+void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index);
 int vsp1_du_map_sg(struct device *dev, struct sg_table *sgt);
 void vsp1_du_unmap_sg(struct device *dev, struct sg_table *sgt);