+{
+ struct media_entity *entity = media->pipeline;
+ struct v4l2_control ctrl = *arg;
+ struct v4l2_queryctrl queryctrl;
+ bool ctrl_found = 0;
+ int ret;
+
+ /*
+ * The control has to be reset to the default value
+ * on all of the pipeline entities, prior setting a new
+ * value. This is required in cases when the control config
+ * is changed between subsequent calls to VIDIOC_S_CTRL,
+ * to avoid the situation when a control is set on more
+ * than one sub-device.
+ */
+ if (request == VIDIOC_S_CTRL) {
+ while (entity) {
+ queryctrl.id = ctrl.id;
+
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERYCTRL,
+ &queryctrl);
+ if (ret < 0) {
+ entity = entity->next;
+ continue;
+ }
+
+ ctrl_found = true;
+
+ if (queryctrl.type & V4L2_CTRL_TYPE_BUTTON)
+ break;
+
+ ctrl.value = queryctrl.default_value;
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_S_CTRL, &ctrl);
+ if (ret < 0)
+ return -EINVAL;
+
+ entity = entity->next;
+ }
+
+ ctrl.value = arg->value;
+ }
+
+ if (!ctrl_found) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ entity = v4l2_subdev_get_pipeline_entity_by_cid(media, ctrl.id);
+
+ if (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, request, &ctrl);
+ } else {
+ /* Walk the pipeline until the request succeeds */
+ entity = media->pipeline;
+
+ ret = -ENOENT;
+
+ while (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, request, &ctrl);
+ if (!ret)
+ break;
+
+ entity = entity->next;
+ }
+ }
+
+exit:
+ *arg = ctrl;
+
+ media_dbg(media, "%s [id: 0x%8.8x, name: %s, entity: %s] (%d)\n",
+ VIDIOC_CTRL(request), ctrl.id, ret ? NULL : queryctrl.name,
+ entity ? entity->info.name : NULL, ret);
+
+ return ret;
+}
+
+static int media_ioctl_single_ext_ctrl(struct media_device *media,
+ int request, struct v4l2_ext_controls *arg)
+{
+ struct media_entity *entity = media->pipeline;
+ struct v4l2_ext_controls ctrls = *arg;
+ struct v4l2_ext_control *ctrl;
+ struct v4l2_query_ext_ctrl queryctrl;
+ bool ctrl_found = 0;
+ int ret = -EINVAL;
+
+ ctrl = &ctrls.controls[0];
+
+ /*
+ * The control has to be reset to the default value
+ * on all of the pipeline entities, prior setting a new
+ * value. This is required in cases when the control config
+ * is changed between subsequent calls to VIDIOC_S_EXT_CTRLS,
+ * to avoid the situation when a control is set on more
+ * than one sub-device.
+ */
+ if (request == VIDIOC_S_EXT_CTRLS) {
+ while (entity) {
+ queryctrl.id = ctrl->id;
+
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERY_EXT_CTRL,
+ &queryctrl);
+ if (ret < 0) {
+ entity = entity->next;
+ continue;
+ }
+
+ ctrl_found = true;
+
+ if (queryctrl.type & V4L2_CTRL_TYPE_BUTTON)
+ break;
+
+ ctrl->value64 = queryctrl.default_value;
+
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_S_EXT_CTRLS,
+ &ctrls);
+ if (ret < 0)
+ return -EINVAL;
+
+ entity = entity->next;
+ }
+
+ ctrl->value64 = arg->controls[0].value64;
+ }
+
+ if (!ctrl_found) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ entity = v4l2_subdev_get_pipeline_entity_by_cid(media, ctrl->id);
+
+ if (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, request, &ctrls);
+ } else {
+ /* Walk the pipeline until the request succeeds */
+ entity = media->pipeline;
+
+ while (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, request, &ctrls);
+ if (!ret)
+ break;
+
+ entity = entity->next;
+ }
+ }
+
+exit:
+ *arg = ctrls;
+
+ media_dbg(media, "%s [id: 0x%8.8x, entity: %s] (%d)\n",
+ VIDIOC_EXT_CTRL(request), ctrl->id,
+ entity ? entity->info.name : NULL, ret);
+
+ return ret;
+}
+
+int media_ioctl_ext_ctrl(struct media_device *media, int request,
+ struct v4l2_ext_controls *arg)
+{
+ struct v4l2_ext_controls out_ctrls = *arg, ctrls = *arg;
+ int ret = -EINVAL, i;
+
+ ctrls.count = 1;
+
+ /*
+ * Split cluster to individual ioctl calls for each control
+ * from the array, to make possible redirection of every
+ * single control to different sub-device, according to the
+ * configuration settings.
+ */
+ for (i = 0; i < arg->count; ++i) {
+ ctrls.controls = &arg->controls[i];
+
+ ret = media_ioctl_single_ext_ctrl(media, request, &ctrls);
+ out_ctrls.controls[i] = ctrls.controls[i];
+ if (ret < 0) {
+ if (ctrls.error_idx == 1)
+ out_ctrls.error_idx = ctrls.count;
+ else
+ out_ctrls.error_idx = i;
+ break;
+ }
+ }
+
+ *arg = out_ctrls;
+ return ret;
+}
+
+int sort_ctrls(const void * a, const void * b)
+{
+ const struct media_entity_to_cid *ctrl_a = a, *ctrl_b = b;
+
+ return ctrl_a->queryctrl.id - ctrl_b->queryctrl.id;
+}
+
+int media_ioctl_queryctrl(struct media_device *media,
+ struct v4l2_queryctrl *arg)
+{
+ struct media_entity *entity = media->pipeline, *target_entity;
+ struct v4l2_queryctrl queryctrl = *arg;
+ int ret = -EINVAL, num_ctrls = 0;
+ struct media_entity_to_cid *ctrls_found;
+
+ /*
+ * If id is or'ed with V4L2_CTRL_FLAG_NEXT_CTRL then the control to
+ * be found is the one with the next lowest id among all entities
+ * in the pipeline.
+ */
+ if (queryctrl.id & V4L2_CTRL_FLAG_NEXT_CTRL) {
+ ctrls_found = malloc(sizeof(*ctrls_found));
+
+ while (entity) {
+ queryctrl = *arg;
+
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERYCTRL,
+ &queryctrl);
+ if (!ret) {
+ ctrls_found = realloc(ctrls_found,
+ sizeof(*ctrls_found) * (num_ctrls + 1));
+ ctrls_found[num_ctrls].queryctrl = queryctrl;
+ ctrls_found[num_ctrls].entity = entity;
+ ++num_ctrls;
+ }
+
+ entity = entity->next;
+ }
+
+ if (num_ctrls == 0) {
+ ret = -EINVAL;
+ entity = NULL;
+ goto done;
+ }
+
+ qsort(ctrls_found, num_ctrls, sizeof(*ctrls_found), sort_ctrls);
+
+ queryctrl = ctrls_found[0].queryctrl;
+ target_entity = ctrls_found[0].entity;
+
+ free(ctrls_found);
+ }
+
+ entity = v4l2_subdev_get_pipeline_entity_by_cid(media, queryctrl.id);
+ if (entity)
+ target_entity = entity;
+
+ ret = SYS_IOCTL(target_entity->sd->fd, VIDIOC_QUERYCTRL,
+ &queryctrl);
+
+done:
+ media_dbg(media,
+ "VIDIOC_QUERYCTRL [id: 0x%8.8x, name: %s, entity: %s] (%d)\n",
+ ret ? arg->id : queryctrl.id, ret ? NULL : queryctrl.name,
+ target_entity ? target_entity->info.name : NULL, ret);
+
+ *arg = queryctrl;
+
+ return ret;
+}
+
+int media_ioctl_query_ext_ctrl(struct media_device *media,
+ struct v4l2_query_ext_ctrl *arg)
+{
+ struct media_entity *entity = media->pipeline, *target_entity;
+ struct v4l2_query_ext_ctrl query_ext_ctrl = *arg;
+ int ret = -EINVAL, num_ctrls = 0;
+ struct media_entity_to_cid *ctrls_found;
+
+ /*
+ * If id is or'ed with V4L2_CTRL_FLAG_NEXT_CTRL then the control to
+ * be found is the one with the next lowest id among all entities
+ * in the pipeline.
+ */
+ if (query_ext_ctrl.id & V4L2_CTRL_FLAG_NEXT_CTRL) {
+ ctrls_found = malloc(sizeof(*ctrls_found));
+
+ while (entity) {
+ query_ext_ctrl = *arg;
+
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERY_EXT_CTRL,
+ &query_ext_ctrl.id);
+ if (!ret) {
+ ctrls_found = realloc(ctrls_found,
+ sizeof(*ctrls_found) * (num_ctrls + 1));
+ ctrls_found[num_ctrls].query_ext_ctrl =
+ query_ext_ctrl;
+ ctrls_found[num_ctrls].entity = entity;
+ ++num_ctrls;
+ }
+
+ entity = entity->next;
+ }
+
+ if (num_ctrls == 0) {
+ ret = -EINVAL;
+ entity = NULL;
+ goto done;
+ }
+
+ qsort(ctrls_found, num_ctrls, sizeof(*ctrls_found), sort_ctrls);
+
+ query_ext_ctrl = ctrls_found[0].query_ext_ctrl;
+ target_entity = ctrls_found[0].entity;
+
+ free(ctrls_found);
+ }
+
+ entity = v4l2_subdev_get_pipeline_entity_by_cid(media, query_ext_ctrl.id);
+ if (entity)
+ target_entity = entity;
+
+ ret = SYS_IOCTL(target_entity->sd->fd, VIDIOC_QUERYCTRL,
+ &query_ext_ctrl);
+
+done:
+ media_dbg(media,
+ "VIDIOC_QUERY_EXT_CTRL [id: 0x%8.8x, name: %s, entity: %s] (%d)\n",
+ ret ? arg->id : query_ext_ctrl.id,
+ ret ? NULL : query_ext_ctrl.name,
+ target_entity ? target_entity->info.name : NULL, ret);
+
+ *arg = query_ext_ctrl;
+
+ return ret;
+}
+
+int media_ioctl_querymenu(struct media_device *media,
+ struct v4l2_querymenu *arg)
+{
+ struct media_entity *entity = media->pipeline;
+ struct v4l2_querymenu querymenu = *arg;
+ int ret = -EINVAL;
+
+ entity = v4l2_subdev_get_pipeline_entity_by_cid(media, querymenu.id);
+ if (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERYMENU, &querymenu);
+ goto exit;
+ }
+
+ entity = media->pipeline;
+
+ while (entity) {
+ ret = SYS_IOCTL(entity->sd->fd, VIDIOC_QUERYMENU, &querymenu);
+ if (!ret)
+ break;
+
+ entity = entity->next;
+ }
+
+exit:
+ *arg = querymenu;
+
+ media_dbg(media, "VIDIOC_QUERYMENU [id: 0x%8.8x, name: %s, entity: %s] (%d)\n",
+ querymenu.id, ret ? NULL : querymenu.name,
+ entity ? entity->info.name : NULL, ret);
+
+ return ret;
+}
diff --git a/utils/media-ctl/libv4l2media_ioctl.h b/utils/media-ctl/libv4l2media_ioctl.h
new file mode 100644
index 0000000..5501895
--- /dev/null
+++ b/utils/media-ctl/libv4l2media_ioctl.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef __LIBV4L2MEDIA_IOCTL_H
+#define __LIBV4L2MEDIA_IOCTL_H
+
+#include <linux/videodev2.h>
+
+struct media_device;
+
+struct media_entity_to_cid {
+ struct media_entity *entity;
+ union {
+ struct v4l2_queryctrl queryctrl;
+ struct v4l2_query_ext_ctrl query_ext_ctrl;
+ };
+};
+
+int media_ioctl_ctrl(struct media_device *media, int request,
+ struct v4l2_control *arg);
+
+int media_ioctl_ext_ctrl(struct media_device *media, int request,
+ struct v4l2_ext_controls *arg);
+
+int media_ioctl_queryctrl(struct media_device *media,
+ struct v4l2_queryctrl *arg);
+
+int media_ioctl_query_ext_ctrl(struct media_device *media,
+ struct v4l2_query_ext_ctrl *arg);
+
+int media_ioctl_querymenu(struct media_device *media,
+ struct v4l2_querymenu *arg);
+
+#endif /* __LIBV4L2MEDIA_IOCTL_H */
