--- /dev/null
+/*
+ * vsp1_entity.c -- R-Car VSP1 Base Entity
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_entity.h"
+#include "vsp1_video.h"
+
+bool vsp1_entity_is_streaming(struct vsp1_entity *entity)
+{
+ bool streaming;
+
+ mutex_lock(&entity->lock);
+ streaming = entity->streaming;
+ mutex_unlock(&entity->lock);
+
+ return streaming;
+}
+
+int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming)
+{
+ int ret;
+
+ mutex_lock(&entity->lock);
+ entity->streaming = streaming;
+ mutex_unlock(&entity->lock);
+
+ if (!streaming)
+ return 0;
+
+ if (!entity->subdev.ctrl_handler)
+ return 0;
+
+ ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler);
+ if (ret < 0) {
+ mutex_lock(&entity->lock);
+ entity->streaming = false;
+ mutex_unlock(&entity->lock);
+ }
+
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+struct v4l2_mbus_framefmt *
+vsp1_entity_get_pad_format(struct vsp1_entity *entity,
+ struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, u32 which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &entity->formats[pad];
+ default:
+ return NULL;
+ }
+}
+
+/*
+ * vsp1_entity_init_formats - Initialize formats on all pads
+ * @subdev: V4L2 subdevice
+ * @cfg: V4L2 subdev pad configuration
+ *
+ * Initialize all pad formats with default values. If cfg is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg)
+{
+ struct v4l2_subdev_format format;
+ unsigned int pad;
+
+ for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
+ memset(&format, 0, sizeof(format));
+
+ format.pad = pad;
+ format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY
+ : V4L2_SUBDEV_FORMAT_ACTIVE;
+
+ v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format);
+ }
+}
+
+static int vsp1_entity_open(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh)
+{
+ vsp1_entity_init_formats(subdev, fh->pad);
+
+ return 0;
+}
+
+const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = {
+ .open = vsp1_entity_open,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media Operations
+ */
+
+static int vsp1_entity_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct vsp1_entity *source;
+
+ if (!(local->flags & MEDIA_PAD_FL_SOURCE))
+ return 0;
+
+ source = container_of(local->entity, struct vsp1_entity, subdev.entity);
+
+ if (!source->route)
+ return 0;
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (source->sink)
+ return -EBUSY;
+ source->sink = remote->entity;
+ source->sink_pad = remote->index;
+ } else {
+ source->sink = NULL;
+ source->sink_pad = 0;
+ }
+
+ return 0;
+}
+
+const struct media_entity_operations vsp1_media_ops = {
+ .link_setup = vsp1_entity_link_setup,
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization
+ */
+
+static const struct vsp1_route vsp1_routes[] = {
+ { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
+ { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
+ VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), } },
+ { VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } },
+ { VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } },
+ { VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } },
+ { VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } },
+ { VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { VI6_DPR_NODE_RPF(0), } },
+ { VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { VI6_DPR_NODE_RPF(1), } },
+ { VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { VI6_DPR_NODE_RPF(2), } },
+ { VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { VI6_DPR_NODE_RPF(3), } },
+ { VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { VI6_DPR_NODE_RPF(4), } },
+ { VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } },
+ { VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } },
+ { VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } },
+ { VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } },
+ { VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } },
+ { VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } },
+ { VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } },
+ { VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } },
+};
+
+int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
+ unsigned int num_pads)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) {
+ if (vsp1_routes[i].type == entity->type &&
+ vsp1_routes[i].index == entity->index) {
+ entity->route = &vsp1_routes[i];
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(vsp1_routes))
+ return -EINVAL;
+
+ mutex_init(&entity->lock);
+
+ entity->vsp1 = vsp1;
+ entity->source_pad = num_pads - 1;
+
+ /* Allocate formats and pads. */
+ entity->formats = devm_kzalloc(vsp1->dev,
+ num_pads * sizeof(*entity->formats),
+ GFP_KERNEL);
+ if (entity->formats == NULL)
+ return -ENOMEM;
+
+ entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
+ GFP_KERNEL);
+ if (entity->pads == NULL)
+ return -ENOMEM;
+
+ /* Initialize pads. */
+ for (i = 0; i < num_pads - 1; ++i)
+ entity->pads[i].flags = MEDIA_PAD_FL_SINK;
+
+ entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
+
+ /* Initialize the media entity. */
+ return media_entity_init(&entity->subdev.entity, num_pads,
+ entity->pads, 0);
+}
+
+void vsp1_entity_destroy(struct vsp1_entity *entity)
+{
+ if (entity->video)
+ vsp1_video_cleanup(entity->video);
+ if (entity->subdev.ctrl_handler)
+ v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
+ media_entity_cleanup(&entity->subdev.entity);
+
+ mutex_destroy(&entity->lock);
+}
Code Review / kvmfornfv.git / blobdiff