new file mode 100644
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+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jacek Anaszewski <j.anaszewski@samsung.com>
+ *
+ * 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 __LIBV4L2_MDEV_IOCTL_H
+#define __LIBV4L2_MDEV_IOCTL_H
+
+#include <linux/videodev2.h>
+#include <libv4l2-mdev.h>
+
+int mdev_ioctl_set_fmt(struct media_device *mdev,
+ struct v4l2_format *fmt);
+
+int mdev_ioctl_ctrl(struct media_device *mdev, int request,
+ struct v4l2_control *arg);
+
+int mdev_ioctl_ext_ctrl(struct media_device *mdev, int request,
+ struct v4l2_ext_controls *arg);
+
+int mdev_ioctl_single_ext_ctrl(struct media_device *mdev,
+ int request, struct v4l2_ext_controls *arg);
+
+int mdev_ioctl_queryctrl(struct media_device *mdev,
+ struct v4l2_queryctrl *arg);
+
+int mdev_ioctl_query_ext_ctrl(struct media_device *mdev,
+ struct v4l2_query_ext_ctrl *arg);
+
+int mdev_ioctl_querymenu(struct media_device *mdev,
+ struct v4l2_querymenu *arg);
+
+#endif /* __LIBV4L2_MDEV_IOCTL_H */
new file mode 100644
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+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jacek Anaszewski <j.anaszewski@samsung.com>
+ *
+ * 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.
+ */
+
+#include <errno.h>
+#include <linux/videodev2.h>
+#include <sys/ioctl.h>
+
+#include <libv4l2-mdev-ioctl.h>
+
+int mdev_ioctl_set_fmt(struct media_device *mdev,
+ struct v4l2_format *fmt)
+{
+ struct v4l2_subdev_format sd_fmt = { 0 };
+ struct media_entity *pipeline = mdev->pipeline;
+ int ret;
+
+ while (pipeline) {
+ sd_fmt = pipeline->subdev_fmt;
+ sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_SUBDEV_S_FMT,
+ &sd_fmt);
+ if (ret < 0)
+ return ret;
+
+ pipeline = pipeline->next;
+
+ /* Last entity in the pipeline is not a sub-device */
+ if (pipeline->next == NULL)
+ break;
+ }
+
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_S_FMT, fmt);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int mdev_ioctl_ctrl(struct media_device *mdev, int request,
+ struct v4l2_control *arg)
+{
+ struct media_entity *pipeline = mdev->pipeline, *entity;
+ struct v4l2_control ctrl = *arg;
+ struct v4l2_queryctrl queryctrl;
+ int ret = -EINVAL;
+
+ /*
+ * 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 (pipeline) {
+ queryctrl.id = ctrl.id;
+
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_QUERYCTRL,
+ &queryctrl);
+ if (ret < 0) {
+ pipeline = pipeline->next;
+ continue;
+ }
+
+ ctrl.value = queryctrl.default_value;
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_S_CTRL, &ctrl);
+ if (ret < 0)
+ return -EINVAL;
+
+ pipeline = pipeline->next;
+ }
+
+ ctrl.value = arg->value;
+ }
+
+ entity = mdev_conf_get_entity_by_cid(mdev->config.controls, ctrl.id);
+ if (entity) {
+ ret = SYS_IOCTL(entity->fd, request, &ctrl);
+ V4L2_MDEV_DBG("Ioctl result for user control %x on %s: %d.",
+ ctrl.id, entity->name, ret);
+ goto exit;
+ }
+
+ V4L2_MDEV_DBG("No config for control id %x.", ctrl.id);
+
+ /* Walk the pipeline until the request succeeds */
+ pipeline = mdev->pipeline;
+
+ while (pipeline) {
+ ret = SYS_IOCTL(pipeline->fd, request, &ctrl);
+ if (!ret) {
+ V4L2_MDEV_DBG("Ioctl succeeded for user control %x on %s.",
+ ctrl.id, pipeline->name);
+ goto exit;
+ }
+
+ pipeline = pipeline->next;
+ }
+
+exit:
+ *arg = ctrl;
+ return ret;
+}
+
+int mdev_ioctl_single_ext_ctrl(struct media_device *mdev,
+ int request, struct v4l2_ext_controls *arg)
+{
+ struct media_entity *pipeline = mdev->pipeline, *entity;
+ struct v4l2_ext_controls ctrls = *arg;
+ struct v4l2_ext_control *ctrl;
+ struct v4l2_query_ext_ctrl queryctrl;
+ 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 (pipeline) {
+ queryctrl.id = ctrl->id;
+
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_QUERY_EXT_CTRL,
+ &queryctrl);
+ if (ret < 0) {
+ pipeline = pipeline->next;
+ continue;
+ }
+
+ ctrl->value64 = queryctrl.default_value;
+
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_S_EXT_CTRLS, &ctrls);
+ if (ret < 0)
+ return -EINVAL;
+
+ pipeline = pipeline->next;
+ }
+
+ ctrl->value64 = arg->controls[0].value64;
+ }
+
+ entity = mdev_conf_get_entity_by_cid(mdev->config.controls, ctrl->id);
+ if (entity) {
+ ret = SYS_IOCTL(entity->fd, request, &ctrls);
+ V4L2_MDEV_DBG("Ioctl result for extended control %x on %s: %d.",
+ ctrl->id, entity->name, ret);
+ goto exit;
+ }
+
+ V4L2_MDEV_DBG("No config for control id %x.", ctrl->id);
+
+ /* Walk the pipeline until the request succeeds */
+ pipeline = mdev->pipeline;
+
+ while (pipeline) {
+ ret = SYS_IOCTL(pipeline->fd, request, &ctrls);
+ if (!ret) {
+ V4L2_MDEV_DBG("Ioctl succeeded for extended control %x on %s.",
+ ctrl->id, pipeline->name);
+ goto exit;
+ }
+
+
+ pipeline = pipeline->next;
+ }
+
+exit:
+ *arg = ctrls;
+ return ret;
+}
+
+int mdev_ioctl_ext_ctrl(struct media_device *mdev, 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 = mdev_ioctl_single_ext_ctrl(mdev, 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;
+ goto exit;
+ }
+ }
+
+exit:
+ *arg = out_ctrls;
+ return ret;
+}
+
+int mdev_ioctl_queryctrl(struct media_device *mdev,
+ struct v4l2_queryctrl *arg)
+{
+ struct media_entity *pipeline = mdev->pipeline, *entity;
+ struct v4l2_queryctrl queryctrl = *arg;
+ int ret = -EINVAL;
+
+ while (pipeline) {
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_QUERYCTRL, &queryctrl);
+ if (!ret) {
+ entity = mdev_conf_get_entity_by_cid(mdev->config.controls,
+ queryctrl.id);
+ /*
+ * If the control is in the config, then
+ * query the associated sub-device.
+ */
+ if (entity) {
+ V4L2_MDEV_DBG("Control \"%s\" found in config.", queryctrl.name);
+ /* Check if the control hasn't been already queried */
+ if (entity->fd != pipeline->fd)
+ ret = SYS_IOCTL(entity->fd, VIDIOC_QUERYCTRL, &queryctrl);
+ }
+
+ V4L2_MDEV_DBG("Queryctrl ext control \"%s\" on %s (%d).",
+ queryctrl.name, entity ? entity->name :
+ pipeline->name,
+ ret);
+ break;
+ }
+
+ pipeline = pipeline->next;
+ }
+
+ *arg = queryctrl;
+ return ret;
+}
+
+int mdev_ioctl_query_ext_ctrl(struct media_device *mdev,
+ struct v4l2_query_ext_ctrl *arg)
+{
+ struct media_entity *pipeline = mdev->pipeline, *entity;
+ struct v4l2_query_ext_ctrl query_ext_ctrl = *arg;
+ int ret = -EINVAL;
+
+ while (pipeline) {
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_QUERY_EXT_CTRL, &query_ext_ctrl);
+ if (!ret) {
+ entity = mdev_conf_get_entity_by_cid(mdev->config.controls,
+ query_ext_ctrl.id);
+ /*
+ * If the control is in the config, then
+ * query the associated sub-device.
+ */
+ if (entity) {
+ V4L2_MDEV_DBG("Control \"%s\" found in config.", query_ext_ctrl.name);
+ /* Check if the control hasn't been already queried */
+ if (entity->fd != pipeline->fd)
+ ret = SYS_IOCTL(entity->fd, VIDIOC_QUERYCTRL, &query_ext_ctrl);
+ }
+
+ V4L2_MDEV_DBG("Queryctrl ext control \"%s\" on %s (%d).",
+ query_ext_ctrl.name, entity ?
+ entity->name :
+ pipeline->name,
+ ret);
+ break;
+ }
+
+ pipeline = pipeline->next;
+ }
+
+ *arg = query_ext_ctrl;
+ return ret;
+}
+
+int mdev_ioctl_querymenu(struct media_device *mdev,
+ struct v4l2_querymenu *arg)
+{
+ struct media_entity *pipeline = mdev->pipeline, *entity;
+ struct v4l2_querymenu querymenu = *arg;
+ int ret = -EINVAL;
+
+ entity = mdev_conf_get_entity_by_cid(mdev->config.controls, querymenu.id);
+ if (entity) {
+ ret = SYS_IOCTL(entity->fd, VIDIOC_QUERYMENU, &querymenu);
+ V4L2_MDEV_DBG("Querymenu result for the control %x on %s: %d.",
+ querymenu.id, entity->name, ret);
+ goto exit;
+ }
+
+ while (pipeline) {
+ ret = SYS_IOCTL(pipeline->fd, VIDIOC_QUERYMENU, &querymenu);
+ if (!ret) {
+ V4L2_MDEV_DBG("Querymenu succeeded for the control %x on %s.",
+ querymenu.id, pipeline->name);
+ goto exit;
+ }
+
+ pipeline = pipeline->next;
+ }
+
+exit:
+ *arg = querymenu;
+ return ret;
+}