projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2096a5dc | 1 | /* |
| 3dd5ee08 | 2 | * V4L2 sub-device |
| 2096a5dc | 3 | * |
| 3dd5ee08 | 4 | * Copyright (C) 2010 Nokia Corporation |
| 2096a5dc | 5 | * |
| 3dd5ee08 LP |
6 | * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 7 | * Sakari Ailus <sakari.ailus@iki.fi> | |
| 2096a5dc | 8 | * |
| 3dd5ee08 LP |
9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 2096a5dc | 12 | * |
| 3dd5ee08 LP |
13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 2096a5dc | 17 | * |
| 3dd5ee08 LP |
18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 2096a5dc LP |
21 | */ |
| 22 | ||
| 23 | #include <linux/types.h> | |
| 24 | #include <linux/ioctl.h> | |
| 25 | #include <linux/videodev2.h> | |
| 26 | ||
| 27 | #include <media/v4l2-device.h> | |
| 28 | #include <media/v4l2-ioctl.h> | |
| 29 | ||
| 30 | static int subdev_open(struct file *file) | |
| 31 | { | |
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 35 | static int subdev_close(struct file *file) | |
| 36 | { | |
| 37 | return 0; | |
| 38 | } | |
| 39 | ||
| 40 | static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) | |
| 41 | { | |
| 42 | switch (cmd) { | |
| 43 | default: | |
| 44 | return -ENOIOCTLCMD; | |
| 45 | } | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | static long subdev_ioctl(struct file *file, unsigned int cmd, | |
| 51 | unsigned long arg) | |
| 52 | { | |
| 53 | return video_usercopy(file, cmd, arg, subdev_do_ioctl); | |
| 54 | } | |
| 55 | ||
| 56 | const struct v4l2_file_operations v4l2_subdev_fops = { | |
| 57 | .owner = THIS_MODULE, | |
| 58 | .open = subdev_open, | |
| 59 | .unlocked_ioctl = subdev_ioctl, | |
| 60 | .release = subdev_close, | |
| 61 | }; | |
| 3dd5ee08 LP |
62 | |
| 63 | void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) | |
| 64 | { | |
| 65 | INIT_LIST_HEAD(&sd->list); | |
| 66 | BUG_ON(!ops); | |
| 67 | sd->ops = ops; | |
| 68 | sd->v4l2_dev = NULL; | |
| 69 | sd->flags = 0; | |
| 70 | sd->name[0] = '\0'; | |
| 71 | sd->grp_id = 0; | |
| 72 | sd->dev_priv = NULL; | |
| 73 | sd->host_priv = NULL; | |
| 74 | } | |
| 75 | EXPORT_SYMBOL(v4l2_subdev_init); |