v4l: vsp1: Add support for multiple LIF instances

The VSP2-DL instance (present in the H3 ES2.0 and M3-N SoCs) has two LIF
instances. Adapt the driver infrastructure to support multiple LIFs.
Support for multiple display pipelines will be added separately.

The change to the entity routing table removes the ability to connect
the LIF output to the HGO or HGT histogram generators. This feature is
only available on Gen2 hardware, isn't supported by the rest of the
driver, and has no known use case, so this isn't an issue.

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>

1 files changed, 30 insertions, 19 deletions

diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index d1682a9719af..962e4c304076 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -168,10 +168,13 @@ static int vsp1_uapi_create_links(struct vsp1_device *vsp1)
 			return ret;
 	}
 
-	if (vsp1->lif) {
-		ret = media_create_pad_link(&vsp1->wpf[0]->entity.subdev.entity,
+	for (i = 0; i < vsp1->info->lif_count; ++i) {
+		if (!vsp1->lif[i])
+			continue;
+
+		ret = media_create_pad_link(&vsp1->wpf[i]->entity.subdev.entity,
 					    RWPF_PAD_SOURCE,
-					    &vsp1->lif->entity.subdev.entity,
+					    &vsp1->lif[i]->entity.subdev.entity,
 					    LIF_PAD_SINK, 0);
 		if (ret < 0)
 			return ret;
@@ -334,18 +337,23 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
 	}
 
 	/*
-	 * The LIF is only supported when used in conjunction with the DU, in
+	 * The LIFs are only supported when used in conjunction with the DU, in
 	 * which case the userspace API is disabled. If the userspace API is
-	 * enabled skip the LIF, even when present.
+	 * enabled skip the LIFs, even when present.
 	 */
-	if (vsp1->info->features & VSP1_HAS_LIF && !vsp1->info->uapi) {
-		vsp1->lif = vsp1_lif_create(vsp1);
-		if (IS_ERR(vsp1->lif)) {
-			ret = PTR_ERR(vsp1->lif);
-			goto done;
-		}
+	if (!vsp1->info->uapi) {
+		for (i = 0; i < vsp1->info->lif_count; ++i) {
+			struct vsp1_lif *lif;
+
+			lif = vsp1_lif_create(vsp1, i);
+			if (IS_ERR(lif)) {
+				ret = PTR_ERR(lif);
+				goto done;
+			}
 
-		list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities);
+			vsp1->lif[i] = lif;
+			list_add_tail(&lif->entity.list_dev, &vsp1->entities);
+		}
 	}
 
 	if (vsp1->info->features & VSP1_HAS_LUT) {
@@ -638,8 +646,8 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
 		.version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
 		.model = "VSP1-D",
 		.gen = 2,
-		.features = VSP1_HAS_BRU | VSP1_HAS_HGO | VSP1_HAS_LIF
-			  | VSP1_HAS_LUT,
+		.features = VSP1_HAS_BRU | VSP1_HAS_HGO | VSP1_HAS_LUT,
+		.lif_count = 1,
 		.rpf_count = 4,
 		.uds_count = 1,
 		.wpf_count = 1,
@@ -672,8 +680,8 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
 		.version = VI6_IP_VERSION_MODEL_VSPD_V2H,
 		.model = "VSP1V-D",
 		.gen = 2,
-		.features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
-			  | VSP1_HAS_LIF,
+		.features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT,
+		.lif_count = 1,
 		.rpf_count = 4,
 		.uds_count = 1,
 		.wpf_count = 1,
@@ -721,7 +729,8 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
 		.version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
 		.model = "VSP2-D",
 		.gen = 3,
-		.features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_WPF_VFLIP,
+		.features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
+		.lif_count = 1,
 		.rpf_count = 5,
 		.wpf_count = 2,
 		.num_bru_inputs = 5,
@@ -729,7 +738,8 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
 		.version = VI6_IP_VERSION_MODEL_VSPD_V3,
 		.model = "VSP2-D",
 		.gen = 3,
-		.features = VSP1_HAS_BRS | VSP1_HAS_BRU | VSP1_HAS_LIF,
+		.features = VSP1_HAS_BRS | VSP1_HAS_BRU,
+		.lif_count = 1,
 		.rpf_count = 5,
 		.wpf_count = 1,
 		.num_bru_inputs = 5,
@@ -737,7 +747,8 @@ static const struct vsp1_device_info vsp1_device_infos[] = {
 		.version = VI6_IP_VERSION_MODEL_VSPDL_GEN3,
 		.model = "VSP2-DL",
 		.gen = 3,
-		.features = VSP1_HAS_BRS | VSP1_HAS_BRU | VSP1_HAS_LIF,
+		.features = VSP1_HAS_BRS | VSP1_HAS_BRU,
+		.lif_count = 2,
 		.rpf_count = 5,
 		.wpf_count = 2,
 		.num_bru_inputs = 5,