[media] rename most media/video usb drivers to media/usb
Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab
19
drivers/media/usb/uvc/Kconfig
Normal file
19
drivers/media/usb/uvc/Kconfig
Normal file
@@ -0,0 +1,19 @@
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config USB_VIDEO_CLASS
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tristate "USB Video Class (UVC)"
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select VIDEOBUF2_VMALLOC
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---help---
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Support for the USB Video Class (UVC). Currently only video
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input devices, such as webcams, are supported.
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For more information see: <http://linux-uvc.berlios.de/>
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config USB_VIDEO_CLASS_INPUT_EVDEV
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bool "UVC input events device support"
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default y
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depends on USB_VIDEO_CLASS
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depends on USB_VIDEO_CLASS=INPUT || INPUT=y
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---help---
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This option makes USB Video Class devices register an input device
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to report button events.
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If you are in doubt, say Y.
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6
drivers/media/usb/uvc/Makefile
Normal file
6
drivers/media/usb/uvc/Makefile
Normal file
@@ -0,0 +1,6 @@
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uvcvideo-objs := uvc_driver.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_ctrl.o \
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uvc_status.o uvc_isight.o uvc_debugfs.o
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ifeq ($(CONFIG_MEDIA_CONTROLLER),y)
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uvcvideo-objs += uvc_entity.o
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endif
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obj-$(CONFIG_USB_VIDEO_CLASS) += uvcvideo.o
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2165
drivers/media/usb/uvc/uvc_ctrl.c
Normal file
2165
drivers/media/usb/uvc/uvc_ctrl.c
Normal file
File diff suppressed because it is too large
Load Diff
136
drivers/media/usb/uvc/uvc_debugfs.c
Normal file
136
drivers/media/usb/uvc/uvc_debugfs.c
Normal file
@@ -0,0 +1,136 @@
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/*
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* uvc_debugfs.c -- USB Video Class driver - Debugging support
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*
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* Copyright (C) 2011
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* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/debugfs.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include "uvcvideo.h"
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/* -----------------------------------------------------------------------------
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* Statistics
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*/
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#define UVC_DEBUGFS_BUF_SIZE 1024
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struct uvc_debugfs_buffer {
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size_t count;
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char data[UVC_DEBUGFS_BUF_SIZE];
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};
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static int uvc_debugfs_stats_open(struct inode *inode, struct file *file)
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{
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struct uvc_streaming *stream = inode->i_private;
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struct uvc_debugfs_buffer *buf;
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buf = kmalloc(sizeof(*buf), GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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buf->count = uvc_video_stats_dump(stream, buf->data, sizeof(buf->data));
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file->private_data = buf;
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return 0;
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}
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static ssize_t uvc_debugfs_stats_read(struct file *file, char __user *user_buf,
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size_t nbytes, loff_t *ppos)
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{
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struct uvc_debugfs_buffer *buf = file->private_data;
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return simple_read_from_buffer(user_buf, nbytes, ppos, buf->data,
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buf->count);
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}
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static int uvc_debugfs_stats_release(struct inode *inode, struct file *file)
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{
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kfree(file->private_data);
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file->private_data = NULL;
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return 0;
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}
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static const struct file_operations uvc_debugfs_stats_fops = {
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.owner = THIS_MODULE,
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.open = uvc_debugfs_stats_open,
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.llseek = no_llseek,
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.read = uvc_debugfs_stats_read,
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.release = uvc_debugfs_stats_release,
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};
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/* -----------------------------------------------------------------------------
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* Global and stream initialization/cleanup
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*/
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static struct dentry *uvc_debugfs_root_dir;
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int uvc_debugfs_init_stream(struct uvc_streaming *stream)
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{
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struct usb_device *udev = stream->dev->udev;
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struct dentry *dent;
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char dir_name[32];
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if (uvc_debugfs_root_dir == NULL)
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return -ENODEV;
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sprintf(dir_name, "%u-%u", udev->bus->busnum, udev->devnum);
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dent = debugfs_create_dir(dir_name, uvc_debugfs_root_dir);
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if (IS_ERR_OR_NULL(dent)) {
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uvc_printk(KERN_INFO, "Unable to create debugfs %s "
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"directory.\n", dir_name);
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return -ENODEV;
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}
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stream->debugfs_dir = dent;
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dent = debugfs_create_file("stats", 0444, stream->debugfs_dir,
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stream, &uvc_debugfs_stats_fops);
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if (IS_ERR_OR_NULL(dent)) {
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uvc_printk(KERN_INFO, "Unable to create debugfs stats file.\n");
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uvc_debugfs_cleanup_stream(stream);
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return -ENODEV;
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}
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return 0;
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}
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void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream)
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{
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if (stream->debugfs_dir == NULL)
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return;
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debugfs_remove_recursive(stream->debugfs_dir);
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stream->debugfs_dir = NULL;
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}
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int uvc_debugfs_init(void)
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{
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struct dentry *dir;
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dir = debugfs_create_dir("uvcvideo", usb_debug_root);
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if (IS_ERR_OR_NULL(dir)) {
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uvc_printk(KERN_INFO, "Unable to create debugfs directory\n");
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return -ENODATA;
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}
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uvc_debugfs_root_dir = dir;
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return 0;
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}
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void uvc_debugfs_cleanup(void)
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{
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if (uvc_debugfs_root_dir != NULL)
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debugfs_remove_recursive(uvc_debugfs_root_dir);
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}
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2472
drivers/media/usb/uvc/uvc_driver.c
Normal file
2472
drivers/media/usb/uvc/uvc_driver.c
Normal file
File diff suppressed because it is too large
Load Diff
126
drivers/media/usb/uvc/uvc_entity.c
Normal file
126
drivers/media/usb/uvc/uvc_entity.c
Normal file
@@ -0,0 +1,126 @@
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/*
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* uvc_entity.c -- USB Video Class driver
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*
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* Copyright (C) 2005-2011
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* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include "uvcvideo.h"
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/* ------------------------------------------------------------------------
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* Video subdevices registration and unregistration
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*/
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static int uvc_mc_register_entity(struct uvc_video_chain *chain,
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struct uvc_entity *entity)
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{
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const u32 flags = MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
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struct media_entity *sink;
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unsigned int i;
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int ret;
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sink = (UVC_ENTITY_TYPE(entity) == UVC_TT_STREAMING)
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? (entity->vdev ? &entity->vdev->entity : NULL)
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: &entity->subdev.entity;
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if (sink == NULL)
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return 0;
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for (i = 0; i < entity->num_pads; ++i) {
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struct media_entity *source;
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struct uvc_entity *remote;
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u8 remote_pad;
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if (!(entity->pads[i].flags & MEDIA_PAD_FL_SINK))
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continue;
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remote = uvc_entity_by_id(chain->dev, entity->baSourceID[i]);
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if (remote == NULL)
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return -EINVAL;
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source = (UVC_ENTITY_TYPE(remote) == UVC_TT_STREAMING)
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? (remote->vdev ? &remote->vdev->entity : NULL)
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: &remote->subdev.entity;
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if (source == NULL)
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continue;
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remote_pad = remote->num_pads - 1;
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ret = media_entity_create_link(source, remote_pad,
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sink, i, flags);
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if (ret < 0)
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return ret;
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}
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if (UVC_ENTITY_TYPE(entity) == UVC_TT_STREAMING)
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return 0;
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return v4l2_device_register_subdev(&chain->dev->vdev, &entity->subdev);
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}
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static struct v4l2_subdev_ops uvc_subdev_ops = {
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};
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void uvc_mc_cleanup_entity(struct uvc_entity *entity)
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{
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if (UVC_ENTITY_TYPE(entity) != UVC_TT_STREAMING)
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media_entity_cleanup(&entity->subdev.entity);
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else if (entity->vdev != NULL)
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media_entity_cleanup(&entity->vdev->entity);
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}
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static int uvc_mc_init_entity(struct uvc_entity *entity)
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{
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int ret;
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if (UVC_ENTITY_TYPE(entity) != UVC_TT_STREAMING) {
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v4l2_subdev_init(&entity->subdev, &uvc_subdev_ops);
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strlcpy(entity->subdev.name, entity->name,
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sizeof(entity->subdev.name));
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ret = media_entity_init(&entity->subdev.entity,
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entity->num_pads, entity->pads, 0);
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} else if (entity->vdev != NULL) {
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ret = media_entity_init(&entity->vdev->entity,
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entity->num_pads, entity->pads, 0);
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} else
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ret = 0;
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return ret;
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}
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int uvc_mc_register_entities(struct uvc_video_chain *chain)
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{
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struct uvc_entity *entity;
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int ret;
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list_for_each_entry(entity, &chain->entities, chain) {
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ret = uvc_mc_init_entity(entity);
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if (ret < 0) {
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uvc_printk(KERN_INFO, "Failed to initialize entity for "
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"entity %u\n", entity->id);
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return ret;
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}
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}
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list_for_each_entry(entity, &chain->entities, chain) {
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ret = uvc_mc_register_entity(chain, entity);
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if (ret < 0) {
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uvc_printk(KERN_INFO, "Failed to register entity for "
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"entity %u\n", entity->id);
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return ret;
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}
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}
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return 0;
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}
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137
drivers/media/usb/uvc/uvc_isight.c
Normal file
137
drivers/media/usb/uvc/uvc_isight.c
Normal file
@@ -0,0 +1,137 @@
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/*
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* uvc_isight.c -- USB Video Class driver - iSight support
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*
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* Copyright (C) 2006-2007
|
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* Ivan N. Zlatev <contact@i-nz.net>
|
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* Copyright (C) 2008-2009
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* 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/usb.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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|
||||
#include "uvcvideo.h"
|
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|
||||
/* Built-in iSight webcams implements most of UVC 1.0 except a
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* different packet format. Instead of sending a header at the
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* beginning of each isochronous transfer payload, the webcam sends a
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* single header per image (on its own in a packet), followed by
|
||||
* packets containing data only.
|
||||
*
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||||
* Offset Size (bytes) Description
|
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* ------------------------------------------------------------------
|
||||
* 0x00 1 Header length
|
||||
* 0x01 1 Flags (UVC-compliant)
|
||||
* 0x02 4 Always equal to '11223344'
|
||||
* 0x06 8 Always equal to 'deadbeefdeadface'
|
||||
* 0x0e 16 Unknown
|
||||
*
|
||||
* The header can be prefixed by an optional, unknown-purpose byte.
|
||||
*/
|
||||
|
||||
static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
|
||||
const __u8 *data, unsigned int len)
|
||||
{
|
||||
static const __u8 hdr[] = {
|
||||
0x11, 0x22, 0x33, 0x44,
|
||||
0xde, 0xad, 0xbe, 0xef,
|
||||
0xde, 0xad, 0xfa, 0xce
|
||||
};
|
||||
|
||||
unsigned int maxlen, nbytes;
|
||||
__u8 *mem;
|
||||
int is_header = 0;
|
||||
|
||||
if (buf == NULL)
|
||||
return 0;
|
||||
|
||||
if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
|
||||
(len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
|
||||
uvc_trace(UVC_TRACE_FRAME, "iSight header found\n");
|
||||
is_header = 1;
|
||||
}
|
||||
|
||||
/* Synchronize to the input stream by waiting for a header packet. */
|
||||
if (buf->state != UVC_BUF_STATE_ACTIVE) {
|
||||
if (!is_header) {
|
||||
uvc_trace(UVC_TRACE_FRAME, "Dropping packet (out of "
|
||||
"sync).\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
buf->state = UVC_BUF_STATE_ACTIVE;
|
||||
}
|
||||
|
||||
/* Mark the buffer as done if we're at the beginning of a new frame.
|
||||
*
|
||||
* Empty buffers (bytesused == 0) don't trigger end of frame detection
|
||||
* as it doesn't make sense to return an empty buffer.
|
||||
*/
|
||||
if (is_header && buf->bytesused != 0) {
|
||||
buf->state = UVC_BUF_STATE_DONE;
|
||||
return -EAGAIN;
|
||||
}
|
||||
|
||||
/* Copy the video data to the buffer. Skip header packets, as they
|
||||
* contain no data.
|
||||
*/
|
||||
if (!is_header) {
|
||||
maxlen = buf->length - buf->bytesused;
|
||||
mem = buf->mem + buf->bytesused;
|
||||
nbytes = min(len, maxlen);
|
||||
memcpy(mem, data, nbytes);
|
||||
buf->bytesused += nbytes;
|
||||
|
||||
if (len > maxlen || buf->bytesused == buf->length) {
|
||||
uvc_trace(UVC_TRACE_FRAME, "Frame complete "
|
||||
"(overflow).\n");
|
||||
buf->state = UVC_BUF_STATE_DONE;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
|
||||
struct uvc_buffer *buf)
|
||||
{
|
||||
int ret, i;
|
||||
|
||||
for (i = 0; i < urb->number_of_packets; ++i) {
|
||||
if (urb->iso_frame_desc[i].status < 0) {
|
||||
uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
|
||||
"lost (%d).\n",
|
||||
urb->iso_frame_desc[i].status);
|
||||
}
|
||||
|
||||
/* Decode the payload packet.
|
||||
* uvc_video_decode is entered twice when a frame transition
|
||||
* has been detected because the end of frame can only be
|
||||
* reliably detected when the first packet of the new frame
|
||||
* is processed. The first pass detects the transition and
|
||||
* closes the previous frame's buffer, the second pass
|
||||
* processes the data of the first payload of the new frame.
|
||||
*/
|
||||
do {
|
||||
ret = isight_decode(&stream->queue, buf,
|
||||
urb->transfer_buffer +
|
||||
urb->iso_frame_desc[i].offset,
|
||||
urb->iso_frame_desc[i].actual_length);
|
||||
|
||||
if (buf == NULL)
|
||||
break;
|
||||
|
||||
if (buf->state == UVC_BUF_STATE_DONE ||
|
||||
buf->state == UVC_BUF_STATE_ERROR)
|
||||
buf = uvc_queue_next_buffer(&stream->queue,
|
||||
buf);
|
||||
} while (ret == -EAGAIN);
|
||||
}
|
||||
}
|
||||
359
drivers/media/usb/uvc/uvc_queue.c
Normal file
359
drivers/media/usb/uvc/uvc_queue.c
Normal file
@@ -0,0 +1,359 @@
|
||||
/*
|
||||
* uvc_queue.c -- USB Video Class driver - Buffers management
|
||||
*
|
||||
* Copyright (C) 2005-2010
|
||||
* 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/atomic.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/usb.h>
|
||||
#include <linux/videodev2.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/wait.h>
|
||||
#include <media/videobuf2-vmalloc.h>
|
||||
|
||||
#include "uvcvideo.h"
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
* Video buffers queue management.
|
||||
*
|
||||
* Video queues is initialized by uvc_queue_init(). The function performs
|
||||
* basic initialization of the uvc_video_queue struct and never fails.
|
||||
*
|
||||
* Video buffers are managed by videobuf2. The driver uses a mutex to protect
|
||||
* the videobuf2 queue operations by serializing calls to videobuf2 and a
|
||||
* spinlock to protect the IRQ queue that holds the buffers to be processed by
|
||||
* the driver.
|
||||
*/
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
* videobuf2 queue operations
|
||||
*/
|
||||
|
||||
static int uvc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
|
||||
unsigned int *nbuffers, unsigned int *nplanes,
|
||||
unsigned int sizes[], void *alloc_ctxs[])
|
||||
{
|
||||
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
|
||||
struct uvc_streaming *stream =
|
||||
container_of(queue, struct uvc_streaming, queue);
|
||||
|
||||
if (*nbuffers > UVC_MAX_VIDEO_BUFFERS)
|
||||
*nbuffers = UVC_MAX_VIDEO_BUFFERS;
|
||||
|
||||
*nplanes = 1;
|
||||
|
||||
sizes[0] = stream->ctrl.dwMaxVideoFrameSize;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uvc_buffer_prepare(struct vb2_buffer *vb)
|
||||
{
|
||||
struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);
|
||||
struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf);
|
||||
|
||||
if (vb->v4l2_buf.type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
|
||||
vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {
|
||||
uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (unlikely(queue->flags & UVC_QUEUE_DISCONNECTED))
|
||||
return -ENODEV;
|
||||
|
||||
buf->state = UVC_BUF_STATE_QUEUED;
|
||||
buf->error = 0;
|
||||
buf->mem = vb2_plane_vaddr(vb, 0);
|
||||
buf->length = vb2_plane_size(vb, 0);
|
||||
if (vb->v4l2_buf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
||||
buf->bytesused = 0;
|
||||
else
|
||||
buf->bytesused = vb2_get_plane_payload(vb, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void uvc_buffer_queue(struct vb2_buffer *vb)
|
||||
{
|
||||
struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);
|
||||
struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf);
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&queue->irqlock, flags);
|
||||
if (likely(!(queue->flags & UVC_QUEUE_DISCONNECTED))) {
|
||||
list_add_tail(&buf->queue, &queue->irqqueue);
|
||||
} else {
|
||||
/* If the device is disconnected return the buffer to userspace
|
||||
* directly. The next QBUF call will fail with -ENODEV.
|
||||
*/
|
||||
buf->state = UVC_BUF_STATE_ERROR;
|
||||
vb2_buffer_done(&buf->buf, VB2_BUF_STATE_ERROR);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&queue->irqlock, flags);
|
||||
}
|
||||
|
||||
static int uvc_buffer_finish(struct vb2_buffer *vb)
|
||||
{
|
||||
struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);
|
||||
struct uvc_streaming *stream =
|
||||
container_of(queue, struct uvc_streaming, queue);
|
||||
struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf);
|
||||
|
||||
uvc_video_clock_update(stream, &vb->v4l2_buf, buf);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct vb2_ops uvc_queue_qops = {
|
||||
.queue_setup = uvc_queue_setup,
|
||||
.buf_prepare = uvc_buffer_prepare,
|
||||
.buf_queue = uvc_buffer_queue,
|
||||
.buf_finish = uvc_buffer_finish,
|
||||
};
|
||||
|
||||
void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
|
||||
int drop_corrupted)
|
||||
{
|
||||
queue->queue.type = type;
|
||||
queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
|
||||
queue->queue.drv_priv = queue;
|
||||
queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
|
||||
queue->queue.ops = &uvc_queue_qops;
|
||||
queue->queue.mem_ops = &vb2_vmalloc_memops;
|
||||
vb2_queue_init(&queue->queue);
|
||||
|
||||
mutex_init(&queue->mutex);
|
||||
spin_lock_init(&queue->irqlock);
|
||||
INIT_LIST_HEAD(&queue->irqqueue);
|
||||
queue->flags = drop_corrupted ? UVC_QUEUE_DROP_CORRUPTED : 0;
|
||||
}
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
* V4L2 queue operations
|
||||
*/
|
||||
|
||||
int uvc_alloc_buffers(struct uvc_video_queue *queue,
|
||||
struct v4l2_requestbuffers *rb)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_reqbufs(&queue->queue, rb);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret ? ret : rb->count;
|
||||
}
|
||||
|
||||
void uvc_free_buffers(struct uvc_video_queue *queue)
|
||||
{
|
||||
mutex_lock(&queue->mutex);
|
||||
vb2_queue_release(&queue->queue);
|
||||
mutex_unlock(&queue->mutex);
|
||||
}
|
||||
|
||||
int uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_querybuf(&queue->queue, buf);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_qbuf(&queue->queue, buf);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf,
|
||||
int nonblocking)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_dqbuf(&queue->queue, buf, nonblocking);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_mmap(&queue->queue, vma);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifndef CONFIG_MMU
|
||||
unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
|
||||
unsigned long pgoff)
|
||||
{
|
||||
unsigned long ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_get_unmapped_area(&queue->queue, 0, 0, pgoff, 0);
|
||||
mutex_unlock(&queue->mutex);
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
|
||||
poll_table *wait)
|
||||
{
|
||||
unsigned int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
ret = vb2_poll(&queue->queue, file, wait);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* Check if buffers have been allocated.
|
||||
*/
|
||||
int uvc_queue_allocated(struct uvc_video_queue *queue)
|
||||
{
|
||||
int allocated;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
allocated = vb2_is_busy(&queue->queue);
|
||||
mutex_unlock(&queue->mutex);
|
||||
|
||||
return allocated;
|
||||
}
|
||||
|
||||
/*
|
||||
* Enable or disable the video buffers queue.
|
||||
*
|
||||
* The queue must be enabled before starting video acquisition and must be
|
||||
* disabled after stopping it. This ensures that the video buffers queue
|
||||
* state can be properly initialized before buffers are accessed from the
|
||||
* interrupt handler.
|
||||
*
|
||||
* Enabling the video queue returns -EBUSY if the queue is already enabled.
|
||||
*
|
||||
* Disabling the video queue cancels the queue and removes all buffers from
|
||||
* the main queue.
|
||||
*
|
||||
* This function can't be called from interrupt context. Use
|
||||
* uvc_queue_cancel() instead.
|
||||
*/
|
||||
int uvc_queue_enable(struct uvc_video_queue *queue, int enable)
|
||||
{
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
|
||||
mutex_lock(&queue->mutex);
|
||||
if (enable) {
|
||||
ret = vb2_streamon(&queue->queue, queue->queue.type);
|
||||
if (ret < 0)
|
||||
goto done;
|
||||
|
||||
queue->buf_used = 0;
|
||||
} else {
|
||||
ret = vb2_streamoff(&queue->queue, queue->queue.type);
|
||||
if (ret < 0)
|
||||
goto done;
|
||||
|
||||
spin_lock_irqsave(&queue->irqlock, flags);
|
||||
INIT_LIST_HEAD(&queue->irqqueue);
|
||||
spin_unlock_irqrestore(&queue->irqlock, flags);
|
||||
}
|
||||
|
||||
done:
|
||||
mutex_unlock(&queue->mutex);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Cancel the video buffers queue.
|
||||
*
|
||||
* Cancelling the queue marks all buffers on the irq queue as erroneous,
|
||||
* wakes them up and removes them from the queue.
|
||||
*
|
||||
* If the disconnect parameter is set, further calls to uvc_queue_buffer will
|
||||
* fail with -ENODEV.
|
||||
*
|
||||
* This function acquires the irq spinlock and can be called from interrupt
|
||||
* context.
|
||||
*/
|
||||
void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)
|
||||
{
|
||||
struct uvc_buffer *buf;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&queue->irqlock, flags);
|
||||
while (!list_empty(&queue->irqqueue)) {
|
||||
buf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
|
||||
queue);
|
||||
list_del(&buf->queue);
|
||||
buf->state = UVC_BUF_STATE_ERROR;
|
||||
vb2_buffer_done(&buf->buf, VB2_BUF_STATE_ERROR);
|
||||
}
|
||||
/* This must be protected by the irqlock spinlock to avoid race
|
||||
* conditions between uvc_buffer_queue and the disconnection event that
|
||||
* could result in an interruptible wait in uvc_dequeue_buffer. Do not
|
||||
* blindly replace this logic by checking for the UVC_QUEUE_DISCONNECTED
|
||||
* state outside the queue code.
|
||||
*/
|
||||
if (disconnect)
|
||||
queue->flags |= UVC_QUEUE_DISCONNECTED;
|
||||
spin_unlock_irqrestore(&queue->irqlock, flags);
|
||||
}
|
||||
|
||||
struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
|
||||
struct uvc_buffer *buf)
|
||||
{
|
||||
struct uvc_buffer *nextbuf;
|
||||
unsigned long flags;
|
||||
|
||||
if ((queue->flags & UVC_QUEUE_DROP_CORRUPTED) && buf->error) {
|
||||
buf->error = 0;
|
||||
buf->state = UVC_BUF_STATE_QUEUED;
|
||||
vb2_set_plane_payload(&buf->buf, 0, 0);
|
||||
return buf;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&queue->irqlock, flags);
|
||||
list_del(&buf->queue);
|
||||
if (!list_empty(&queue->irqqueue))
|
||||
nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
|
||||
queue);
|
||||
else
|
||||
nextbuf = NULL;
|
||||
spin_unlock_irqrestore(&queue->irqlock, flags);
|
||||
|
||||
buf->state = buf->error ? VB2_BUF_STATE_ERROR : UVC_BUF_STATE_DONE;
|
||||
vb2_set_plane_payload(&buf->buf, 0, buf->bytesused);
|
||||
vb2_buffer_done(&buf->buf, VB2_BUF_STATE_DONE);
|
||||
|
||||
return nextbuf;
|
||||
}
|
||||
237
drivers/media/usb/uvc/uvc_status.c
Normal file
237
drivers/media/usb/uvc/uvc_status.c
Normal file
@@ -0,0 +1,237 @@
|
||||
/*
|
||||
* uvc_status.c -- USB Video Class driver - Status endpoint
|
||||
*
|
||||
* Copyright (C) 2005-2009
|
||||
* 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/kernel.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/usb.h>
|
||||
#include <linux/usb/input.h>
|
||||
|
||||
#include "uvcvideo.h"
|
||||
|
||||
/* --------------------------------------------------------------------------
|
||||
* Input device
|
||||
*/
|
||||
#ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV
|
||||
static int uvc_input_init(struct uvc_device *dev)
|
||||
{
|
||||
struct input_dev *input;
|
||||
int ret;
|
||||
|
||||
input = input_allocate_device();
|
||||
if (input == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
usb_make_path(dev->udev, dev->input_phys, sizeof(dev->input_phys));
|
||||
strlcat(dev->input_phys, "/button", sizeof(dev->input_phys));
|
||||
|
||||
input->name = dev->name;
|
||||
input->phys = dev->input_phys;
|
||||
usb_to_input_id(dev->udev, &input->id);
|
||||
input->dev.parent = &dev->intf->dev;
|
||||
|
||||
__set_bit(EV_KEY, input->evbit);
|
||||
__set_bit(KEY_CAMERA, input->keybit);
|
||||
|
||||
if ((ret = input_register_device(input)) < 0)
|
||||
goto error;
|
||||
|
||||
dev->input = input;
|
||||
return 0;
|
||||
|
||||
error:
|
||||
input_free_device(input);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void uvc_input_cleanup(struct uvc_device *dev)
|
||||
{
|
||||
if (dev->input)
|
||||
input_unregister_device(dev->input);
|
||||
}
|
||||
|
||||
static void uvc_input_report_key(struct uvc_device *dev, unsigned int code,
|
||||
int value)
|
||||
{
|
||||
if (dev->input) {
|
||||
input_report_key(dev->input, code, value);
|
||||
input_sync(dev->input);
|
||||
}
|
||||
}
|
||||
|
||||
#else
|
||||
#define uvc_input_init(dev)
|
||||
#define uvc_input_cleanup(dev)
|
||||
#define uvc_input_report_key(dev, code, value)
|
||||
#endif /* CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV */
|
||||
|
||||
/* --------------------------------------------------------------------------
|
||||
* Status interrupt endpoint
|
||||
*/
|
||||
static void uvc_event_streaming(struct uvc_device *dev, __u8 *data, int len)
|
||||
{
|
||||
if (len < 3) {
|
||||
uvc_trace(UVC_TRACE_STATUS, "Invalid streaming status event "
|
||||
"received.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (data[2] == 0) {
|
||||
if (len < 4)
|
||||
return;
|
||||
uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
|
||||
data[1], data[3] ? "pressed" : "released", len);
|
||||
uvc_input_report_key(dev, KEY_CAMERA, data[3]);
|
||||
} else {
|
||||
uvc_trace(UVC_TRACE_STATUS, "Stream %u error event %02x %02x "
|
||||
"len %d.\n", data[1], data[2], data[3], len);
|
||||
}
|
||||
}
|
||||
|
||||
static void uvc_event_control(struct uvc_device *dev, __u8 *data, int len)
|
||||
{
|
||||
char *attrs[3] = { "value", "info", "failure" };
|
||||
|
||||
if (len < 6 || data[2] != 0 || data[4] > 2) {
|
||||
uvc_trace(UVC_TRACE_STATUS, "Invalid control status event "
|
||||
"received.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
uvc_trace(UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
|
||||
data[1], data[3], attrs[data[4]], len);
|
||||
}
|
||||
|
||||
static void uvc_status_complete(struct urb *urb)
|
||||
{
|
||||
struct uvc_device *dev = urb->context;
|
||||
int len, ret;
|
||||
|
||||
switch (urb->status) {
|
||||
case 0:
|
||||
break;
|
||||
|
||||
case -ENOENT: /* usb_kill_urb() called. */
|
||||
case -ECONNRESET: /* usb_unlink_urb() called. */
|
||||
case -ESHUTDOWN: /* The endpoint is being disabled. */
|
||||
case -EPROTO: /* Device is disconnected (reported by some
|
||||
* host controller). */
|
||||
return;
|
||||
|
||||
default:
|
||||
uvc_printk(KERN_WARNING, "Non-zero status (%d) in status "
|
||||
"completion handler.\n", urb->status);
|
||||
return;
|
||||
}
|
||||
|
||||
len = urb->actual_length;
|
||||
if (len > 0) {
|
||||
switch (dev->status[0] & 0x0f) {
|
||||
case UVC_STATUS_TYPE_CONTROL:
|
||||
uvc_event_control(dev, dev->status, len);
|
||||
break;
|
||||
|
||||
case UVC_STATUS_TYPE_STREAMING:
|
||||
uvc_event_streaming(dev, dev->status, len);
|
||||
break;
|
||||
|
||||
default:
|
||||
uvc_trace(UVC_TRACE_STATUS, "Unknown status event "
|
||||
"type %u.\n", dev->status[0]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Resubmit the URB. */
|
||||
urb->interval = dev->int_ep->desc.bInterval;
|
||||
if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
|
||||
uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n",
|
||||
ret);
|
||||
}
|
||||
}
|
||||
|
||||
int uvc_status_init(struct uvc_device *dev)
|
||||
{
|
||||
struct usb_host_endpoint *ep = dev->int_ep;
|
||||
unsigned int pipe;
|
||||
int interval;
|
||||
|
||||
if (ep == NULL)
|
||||
return 0;
|
||||
|
||||
uvc_input_init(dev);
|
||||
|
||||
dev->status = kzalloc(UVC_MAX_STATUS_SIZE, GFP_KERNEL);
|
||||
if (dev->status == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
dev->int_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (dev->int_urb == NULL) {
|
||||
kfree(dev->status);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
|
||||
|
||||
/* For high-speed interrupt endpoints, the bInterval value is used as
|
||||
* an exponent of two. Some developers forgot about it.
|
||||
*/
|
||||
interval = ep->desc.bInterval;
|
||||
if (interval > 16 && dev->udev->speed == USB_SPEED_HIGH &&
|
||||
(dev->quirks & UVC_QUIRK_STATUS_INTERVAL))
|
||||
interval = fls(interval) - 1;
|
||||
|
||||
usb_fill_int_urb(dev->int_urb, dev->udev, pipe,
|
||||
dev->status, UVC_MAX_STATUS_SIZE, uvc_status_complete,
|
||||
dev, interval);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void uvc_status_cleanup(struct uvc_device *dev)
|
||||
{
|
||||
usb_kill_urb(dev->int_urb);
|
||||
usb_free_urb(dev->int_urb);
|
||||
kfree(dev->status);
|
||||
uvc_input_cleanup(dev);
|
||||
}
|
||||
|
||||
int uvc_status_start(struct uvc_device *dev)
|
||||
{
|
||||
if (dev->int_urb == NULL)
|
||||
return 0;
|
||||
|
||||
return usb_submit_urb(dev->int_urb, GFP_KERNEL);
|
||||
}
|
||||
|
||||
void uvc_status_stop(struct uvc_device *dev)
|
||||
{
|
||||
usb_kill_urb(dev->int_urb);
|
||||
}
|
||||
|
||||
int uvc_status_suspend(struct uvc_device *dev)
|
||||
{
|
||||
if (atomic_read(&dev->users))
|
||||
usb_kill_urb(dev->int_urb);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int uvc_status_resume(struct uvc_device *dev)
|
||||
{
|
||||
if (dev->int_urb == NULL || atomic_read(&dev->users) == 0)
|
||||
return 0;
|
||||
|
||||
return usb_submit_urb(dev->int_urb, GFP_NOIO);
|
||||
}
|
||||
|
||||
1317
drivers/media/usb/uvc/uvc_v4l2.c
Normal file
1317
drivers/media/usb/uvc/uvc_v4l2.c
Normal file
File diff suppressed because it is too large
Load Diff
1879
drivers/media/usb/uvc/uvc_video.c
Normal file
1879
drivers/media/usb/uvc/uvc_video.c
Normal file
File diff suppressed because it is too large
Load Diff
718
drivers/media/usb/uvc/uvcvideo.h
Normal file
718
drivers/media/usb/uvc/uvcvideo.h
Normal file
@@ -0,0 +1,718 @@
|
||||
#ifndef _USB_VIDEO_H_
|
||||
#define _USB_VIDEO_H_
|
||||
|
||||
#ifndef __KERNEL__
|
||||
#error "The uvcvideo.h header is deprecated, use linux/uvcvideo.h instead."
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/poll.h>
|
||||
#include <linux/usb.h>
|
||||
#include <linux/usb/video.h>
|
||||
#include <linux/uvcvideo.h>
|
||||
#include <linux/videodev2.h>
|
||||
#include <media/media-device.h>
|
||||
#include <media/v4l2-device.h>
|
||||
#include <media/v4l2-event.h>
|
||||
#include <media/v4l2-fh.h>
|
||||
#include <media/videobuf2-core.h>
|
||||
|
||||
/* --------------------------------------------------------------------------
|
||||
* UVC constants
|
||||
*/
|
||||
|
||||
#define UVC_TERM_INPUT 0x0000
|
||||
#define UVC_TERM_OUTPUT 0x8000
|
||||
#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000)
|
||||
|
||||
#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff)
|
||||
#define UVC_ENTITY_IS_UNIT(entity) (((entity)->type & 0xff00) == 0)
|
||||
#define UVC_ENTITY_IS_TERM(entity) (((entity)->type & 0xff00) != 0)
|
||||
#define UVC_ENTITY_IS_ITERM(entity) \
|
||||
(UVC_ENTITY_IS_TERM(entity) && \
|
||||
((entity)->type & 0x8000) == UVC_TERM_INPUT)
|
||||
#define UVC_ENTITY_IS_OTERM(entity) \
|
||||
(UVC_ENTITY_IS_TERM(entity) && \
|
||||
((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
|
||||
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
* GUIDs
|
||||
*/
|
||||
#define UVC_GUID_UVC_CAMERA \
|
||||
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
|
||||
#define UVC_GUID_UVC_OUTPUT \
|
||||
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
|
||||
#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
|
||||
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
|
||||
#define UVC_GUID_UVC_PROCESSING \
|
||||
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
|
||||
#define UVC_GUID_UVC_SELECTOR \
|
||||
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
|
||||
|
||||
#define UVC_GUID_FORMAT_MJPEG \
|
||||
{ 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_YUY2 \
|
||||
{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_YUY2_ISIGHT \
|
||||
{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_NV12 \
|
||||
{ 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_YV12 \
|
||||
{ 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_I420 \
|
||||
{ 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_UYVY \
|
||||
{ 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_Y800 \
|
||||
{ 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_Y8 \
|
||||
{ 'Y', '8', ' ', ' ', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_Y10 \
|
||||
{ 'Y', '1', '0', ' ', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_Y12 \
|
||||
{ 'Y', '1', '2', ' ', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_Y16 \
|
||||
{ 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_BY8 \
|
||||
{ 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_RGBP \
|
||||
{ 'R', 'G', 'B', 'P', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
#define UVC_GUID_FORMAT_M420 \
|
||||
{ 'M', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
|
||||
#define UVC_GUID_FORMAT_H264 \
|
||||
{ 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, \
|
||||
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
* Driver specific constants.
|
||||
*/
|
||||
|
||||
#define DRIVER_VERSION "1.1.1"
|
||||
|
||||
/* Number of isochronous URBs. */
|
||||
#define UVC_URBS 5
|
||||
/* Maximum number of packets per URB. */
|
||||
#define UVC_MAX_PACKETS 32
|
||||
/* Maximum number of video buffers. */
|
||||
#define UVC_MAX_VIDEO_BUFFERS 32
|
||||
/* Maximum status buffer size in bytes of interrupt URB. */
|
||||
#define UVC_MAX_STATUS_SIZE 16
|
||||
|
||||
#define UVC_CTRL_CONTROL_TIMEOUT 300
|
||||
#define UVC_CTRL_STREAMING_TIMEOUT 5000
|
||||
|
||||
/* Maximum allowed number of control mappings per device */
|
||||
#define UVC_MAX_CONTROL_MAPPINGS 1024
|
||||
#define UVC_MAX_CONTROL_MENU_ENTRIES 32
|
||||
|
||||
/* Devices quirks */
|
||||
#define UVC_QUIRK_STATUS_INTERVAL 0x00000001
|
||||
#define UVC_QUIRK_PROBE_MINMAX 0x00000002
|
||||
#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
|
||||
#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
|
||||
#define UVC_QUIRK_STREAM_NO_FID 0x00000010
|
||||
#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
|
||||
#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
|
||||
#define UVC_QUIRK_PROBE_DEF 0x00000100
|
||||
#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
|
||||
|
||||
/* Format flags */
|
||||
#define UVC_FMT_FLAG_COMPRESSED 0x00000001
|
||||
#define UVC_FMT_FLAG_STREAM 0x00000002
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
* Structures.
|
||||
*/
|
||||
|
||||
struct uvc_device;
|
||||
|
||||
/* TODO: Put the most frequently accessed fields at the beginning of
|
||||
* structures to maximize cache efficiency.
|
||||
*/
|
||||
struct uvc_control_info {
|
||||
struct list_head mappings;
|
||||
|
||||
__u8 entity[16];
|
||||
__u8 index; /* Bit index in bmControls */
|
||||
__u8 selector;
|
||||
|
||||
__u16 size;
|
||||
__u32 flags;
|
||||
};
|
||||
|
||||
struct uvc_control_mapping {
|
||||
struct list_head list;
|
||||
struct list_head ev_subs;
|
||||
|
||||
__u32 id;
|
||||
__u8 name[32];
|
||||
__u8 entity[16];
|
||||
__u8 selector;
|
||||
|
||||
__u8 size;
|
||||
__u8 offset;
|
||||
enum v4l2_ctrl_type v4l2_type;
|
||||
__u32 data_type;
|
||||
|
||||
struct uvc_menu_info *menu_info;
|
||||
__u32 menu_count;
|
||||
|
||||
__u32 master_id;
|
||||
__s32 master_manual;
|
||||
__u32 slave_ids[2];
|
||||
|
||||
__s32 (*get) (struct uvc_control_mapping *mapping, __u8 query,
|
||||
const __u8 *data);
|
||||
void (*set) (struct uvc_control_mapping *mapping, __s32 value,
|
||||
__u8 *data);
|
||||
};
|
||||
|
||||
struct uvc_control {
|
||||
struct uvc_entity *entity;
|
||||
struct uvc_control_info info;
|
||||
|
||||
__u8 index; /* Used to match the uvc_control entry with a
|
||||
uvc_control_info. */
|
||||
__u8 dirty:1,
|
||||
loaded:1,
|
||||
modified:1,
|
||||
cached:1,
|
||||
initialized:1;
|
||||
|
||||
__u8 *uvc_data;
|
||||
};
|
||||
|
||||
struct uvc_format_desc {
|
||||
char *name;
|
||||
__u8 guid[16];
|
||||
__u32 fcc;
|
||||
};
|
||||
|
||||
/* The term 'entity' refers to both UVC units and UVC terminals.
|
||||
*
|
||||
* The type field is either the terminal type (wTerminalType in the terminal
|
||||
* descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
|
||||
* As the bDescriptorSubtype field is one byte long, the type value will
|
||||
* always have a null MSB for units. All terminal types defined by the UVC
|
||||
* specification have a non-null MSB, so it is safe to use the MSB to
|
||||
* differentiate between units and terminals as long as the descriptor parsing
|
||||
* code makes sure terminal types have a non-null MSB.
|
||||
*
|
||||
* For terminals, the type's most significant bit stores the terminal
|
||||
* direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
|
||||
* always be accessed with the UVC_ENTITY_* macros and never directly.
|
||||
*/
|
||||
|
||||
struct uvc_entity {
|
||||
struct list_head list; /* Entity as part of a UVC device. */
|
||||
struct list_head chain; /* Entity as part of a video device
|
||||
* chain. */
|
||||
__u8 id;
|
||||
__u16 type;
|
||||
char name[64];
|
||||
|
||||
/* Media controller-related fields. */
|
||||
struct video_device *vdev;
|
||||
struct v4l2_subdev subdev;
|
||||
unsigned int num_pads;
|
||||
unsigned int num_links;
|
||||
struct media_pad *pads;
|
||||
|
||||
union {
|
||||
struct {
|
||||
__u16 wObjectiveFocalLengthMin;
|
||||
__u16 wObjectiveFocalLengthMax;
|
||||
__u16 wOcularFocalLength;
|
||||
__u8 bControlSize;
|
||||
__u8 *bmControls;
|
||||
} camera;
|
||||
|
||||
struct {
|
||||
__u8 bControlSize;
|
||||
__u8 *bmControls;
|
||||
__u8 bTransportModeSize;
|
||||
__u8 *bmTransportModes;
|
||||
} media;
|
||||
|
||||
struct {
|
||||
} output;
|
||||
|
||||
struct {
|
||||
__u16 wMaxMultiplier;
|
||||
__u8 bControlSize;
|
||||
__u8 *bmControls;
|
||||
__u8 bmVideoStandards;
|
||||
} processing;
|
||||
|
||||
struct {
|
||||
} selector;
|
||||
|
||||
struct {
|
||||
__u8 guidExtensionCode[16];
|
||||
__u8 bNumControls;
|
||||
__u8 bControlSize;
|
||||
__u8 *bmControls;
|
||||
__u8 *bmControlsType;
|
||||
} extension;
|
||||
};
|
||||
|
||||
__u8 bNrInPins;
|
||||
__u8 *baSourceID;
|
||||
|
||||
unsigned int ncontrols;
|
||||
struct uvc_control *controls;
|
||||
};
|
||||
|
||||
struct uvc_frame {
|
||||
__u8 bFrameIndex;
|
||||
__u8 bmCapabilities;
|
||||
__u16 wWidth;
|
||||
__u16 wHeight;
|
||||
__u32 dwMinBitRate;
|
||||
__u32 dwMaxBitRate;
|
||||
__u32 dwMaxVideoFrameBufferSize;
|
||||
__u8 bFrameIntervalType;
|
||||
__u32 dwDefaultFrameInterval;
|
||||
__u32 *dwFrameInterval;
|
||||
};
|
||||
|
||||
struct uvc_format {
|
||||
__u8 type;
|
||||
__u8 index;
|
||||
__u8 bpp;
|
||||
__u8 colorspace;
|
||||
__u32 fcc;
|
||||
__u32 flags;
|
||||
|
||||
char name[32];
|
||||
|
||||
unsigned int nframes;
|
||||
struct uvc_frame *frame;
|
||||
};
|
||||
|
||||
struct uvc_streaming_header {
|
||||
__u8 bNumFormats;
|
||||
__u8 bEndpointAddress;
|
||||
__u8 bTerminalLink;
|
||||
__u8 bControlSize;
|
||||
__u8 *bmaControls;
|
||||
/* The following fields are used by input headers only. */
|
||||
__u8 bmInfo;
|
||||
__u8 bStillCaptureMethod;
|
||||
__u8 bTriggerSupport;
|
||||
__u8 bTriggerUsage;
|
||||
};
|
||||
|
||||
enum uvc_buffer_state {
|
||||
UVC_BUF_STATE_IDLE = 0,
|
||||
UVC_BUF_STATE_QUEUED = 1,
|
||||
UVC_BUF_STATE_ACTIVE = 2,
|
||||
UVC_BUF_STATE_READY = 3,
|
||||
UVC_BUF_STATE_DONE = 4,
|
||||
UVC_BUF_STATE_ERROR = 5,
|
||||
};
|
||||
|
||||
struct uvc_buffer {
|
||||
struct vb2_buffer buf;
|
||||
struct list_head queue;
|
||||
|
||||
enum uvc_buffer_state state;
|
||||
unsigned int error;
|
||||
|
||||
void *mem;
|
||||
unsigned int length;
|
||||
unsigned int bytesused;
|
||||
|
||||
u32 pts;
|
||||
};
|
||||
|
||||
#define UVC_QUEUE_DISCONNECTED (1 << 0)
|
||||
#define UVC_QUEUE_DROP_CORRUPTED (1 << 1)
|
||||
|
||||
struct uvc_video_queue {
|
||||
struct vb2_queue queue;
|
||||
struct mutex mutex; /* Protects queue */
|
||||
|
||||
unsigned int flags;
|
||||
unsigned int buf_used;
|
||||
|
||||
spinlock_t irqlock; /* Protects irqqueue */
|
||||
struct list_head irqqueue;
|
||||
};
|
||||
|
||||
struct uvc_video_chain {
|
||||
struct uvc_device *dev;
|
||||
struct list_head list;
|
||||
|
||||
struct list_head entities; /* All entities */
|
||||
struct uvc_entity *processing; /* Processing unit */
|
||||
struct uvc_entity *selector; /* Selector unit */
|
||||
|
||||
struct mutex ctrl_mutex; /* Protects ctrl.info */
|
||||
};
|
||||
|
||||
struct uvc_stats_frame {
|
||||
unsigned int size; /* Number of bytes captured */
|
||||
unsigned int first_data; /* Index of the first non-empty packet */
|
||||
|
||||
unsigned int nb_packets; /* Number of packets */
|
||||
unsigned int nb_empty; /* Number of empty packets */
|
||||
unsigned int nb_invalid; /* Number of packets with an invalid header */
|
||||
unsigned int nb_errors; /* Number of packets with the error bit set */
|
||||
|
||||
unsigned int nb_pts; /* Number of packets with a PTS timestamp */
|
||||
unsigned int nb_pts_diffs; /* Number of PTS differences inside a frame */
|
||||
unsigned int last_pts_diff; /* Index of the last PTS difference */
|
||||
bool has_initial_pts; /* Whether the first non-empty packet has a PTS */
|
||||
bool has_early_pts; /* Whether a PTS is present before the first non-empty packet */
|
||||
u32 pts; /* PTS of the last packet */
|
||||
|
||||
unsigned int nb_scr; /* Number of packets with a SCR timestamp */
|
||||
unsigned int nb_scr_diffs; /* Number of SCR.STC differences inside a frame */
|
||||
u16 scr_sof; /* SCR.SOF of the last packet */
|
||||
u32 scr_stc; /* SCR.STC of the last packet */
|
||||
};
|
||||
|
||||
struct uvc_stats_stream {
|
||||
struct timespec start_ts; /* Stream start timestamp */
|
||||
struct timespec stop_ts; /* Stream stop timestamp */
|
||||
|
||||
unsigned int nb_frames; /* Number of frames */
|
||||
|
||||
unsigned int nb_packets; /* Number of packets */
|
||||
unsigned int nb_empty; /* Number of empty packets */
|
||||
unsigned int nb_invalid; /* Number of packets with an invalid header */
|
||||
unsigned int nb_errors; /* Number of packets with the error bit set */
|
||||
|
||||
unsigned int nb_pts_constant; /* Number of frames with constant PTS */
|
||||
unsigned int nb_pts_early; /* Number of frames with early PTS */
|
||||
unsigned int nb_pts_initial; /* Number of frames with initial PTS */
|
||||
|
||||
unsigned int nb_scr_count_ok; /* Number of frames with at least one SCR per non empty packet */
|
||||
unsigned int nb_scr_diffs_ok; /* Number of frames with varying SCR.STC */
|
||||
unsigned int scr_sof_count; /* STC.SOF counter accumulated since stream start */
|
||||
unsigned int scr_sof; /* STC.SOF of the last packet */
|
||||
unsigned int min_sof; /* Minimum STC.SOF value */
|
||||
unsigned int max_sof; /* Maximum STC.SOF value */
|
||||
};
|
||||
|
||||
struct uvc_streaming {
|
||||
struct list_head list;
|
||||
struct uvc_device *dev;
|
||||
struct video_device *vdev;
|
||||
struct uvc_video_chain *chain;
|
||||
atomic_t active;
|
||||
|
||||
struct usb_interface *intf;
|
||||
int intfnum;
|
||||
__u16 maxpsize;
|
||||
|
||||
struct uvc_streaming_header header;
|
||||
enum v4l2_buf_type type;
|
||||
|
||||
unsigned int nformats;
|
||||
struct uvc_format *format;
|
||||
|
||||
struct uvc_streaming_control ctrl;
|
||||
struct uvc_format *cur_format;
|
||||
struct uvc_frame *cur_frame;
|
||||
/* Protect access to ctrl, cur_format, cur_frame and hardware video
|
||||
* probe control.
|
||||
*/
|
||||
struct mutex mutex;
|
||||
|
||||
/* Buffers queue. */
|
||||
unsigned int frozen : 1;
|
||||
struct uvc_video_queue queue;
|
||||
void (*decode) (struct urb *urb, struct uvc_streaming *video,
|
||||
struct uvc_buffer *buf);
|
||||
|
||||
/* Context data used by the bulk completion handler. */
|
||||
struct {
|
||||
__u8 header[256];
|
||||
unsigned int header_size;
|
||||
int skip_payload;
|
||||
__u32 payload_size;
|
||||
__u32 max_payload_size;
|
||||
} bulk;
|
||||
|
||||
struct urb *urb[UVC_URBS];
|
||||
char *urb_buffer[UVC_URBS];
|
||||
dma_addr_t urb_dma[UVC_URBS];
|
||||
unsigned int urb_size;
|
||||
|
||||
__u32 sequence;
|
||||
__u8 last_fid;
|
||||
|
||||
/* debugfs */
|
||||
struct dentry *debugfs_dir;
|
||||
struct {
|
||||
struct uvc_stats_frame frame;
|
||||
struct uvc_stats_stream stream;
|
||||
} stats;
|
||||
|
||||
/* Timestamps support. */
|
||||
struct uvc_clock {
|
||||
struct uvc_clock_sample {
|
||||
u32 dev_stc;
|
||||
u16 dev_sof;
|
||||
struct timespec host_ts;
|
||||
u16 host_sof;
|
||||
} *samples;
|
||||
|
||||
unsigned int head;
|
||||
unsigned int count;
|
||||
unsigned int size;
|
||||
|
||||
u16 last_sof;
|
||||
u16 sof_offset;
|
||||
|
||||
spinlock_t lock;
|
||||
} clock;
|
||||
};
|
||||
|
||||
enum uvc_device_state {
|
||||
UVC_DEV_DISCONNECTED = 1,
|
||||
};
|
||||
|
||||
struct uvc_device {
|
||||
struct usb_device *udev;
|
||||
struct usb_interface *intf;
|
||||
unsigned long warnings;
|
||||
__u32 quirks;
|
||||
int intfnum;
|
||||
char name[32];
|
||||
|
||||
enum uvc_device_state state;
|
||||
atomic_t users;
|
||||
atomic_t nmappings;
|
||||
|
||||
/* Video control interface */
|
||||
#ifdef CONFIG_MEDIA_CONTROLLER
|
||||
struct media_device mdev;
|
||||
#endif
|
||||
struct v4l2_device vdev;
|
||||
__u16 uvc_version;
|
||||
__u32 clock_frequency;
|
||||
|
||||
struct list_head entities;
|
||||
struct list_head chains;
|
||||
|
||||
/* Video Streaming interfaces */
|
||||
struct list_head streams;
|
||||
atomic_t nstreams;
|
||||
|
||||
/* Status Interrupt Endpoint */
|
||||
struct usb_host_endpoint *int_ep;
|
||||
struct urb *int_urb;
|
||||
__u8 *status;
|
||||
struct input_dev *input;
|
||||
char input_phys[64];
|
||||
};
|
||||
|
||||
enum uvc_handle_state {
|
||||
UVC_HANDLE_PASSIVE = 0,
|
||||
UVC_HANDLE_ACTIVE = 1,
|
||||
};
|
||||
|
||||
struct uvc_fh {
|
||||
struct v4l2_fh vfh;
|
||||
struct uvc_video_chain *chain;
|
||||
struct uvc_streaming *stream;
|
||||
enum uvc_handle_state state;
|
||||
};
|
||||
|
||||
struct uvc_driver {
|
||||
struct usb_driver driver;
|
||||
};
|
||||
|
||||
/* ------------------------------------------------------------------------
|
||||
* Debugging, printing and logging
|
||||
*/
|
||||
|
||||
#define UVC_TRACE_PROBE (1 << 0)
|
||||
#define UVC_TRACE_DESCR (1 << 1)
|
||||
#define UVC_TRACE_CONTROL (1 << 2)
|
||||
#define UVC_TRACE_FORMAT (1 << 3)
|
||||
#define UVC_TRACE_CAPTURE (1 << 4)
|
||||
#define UVC_TRACE_CALLS (1 << 5)
|
||||
#define UVC_TRACE_IOCTL (1 << 6)
|
||||
#define UVC_TRACE_FRAME (1 << 7)
|
||||
#define UVC_TRACE_SUSPEND (1 << 8)
|
||||
#define UVC_TRACE_STATUS (1 << 9)
|
||||
#define UVC_TRACE_VIDEO (1 << 10)
|
||||
#define UVC_TRACE_STATS (1 << 11)
|
||||
#define UVC_TRACE_CLOCK (1 << 12)
|
||||
|
||||
#define UVC_WARN_MINMAX 0
|
||||
#define UVC_WARN_PROBE_DEF 1
|
||||
#define UVC_WARN_XU_GET_RES 2
|
||||
|
||||
extern unsigned int uvc_clock_param;
|
||||
extern unsigned int uvc_no_drop_param;
|
||||
extern unsigned int uvc_trace_param;
|
||||
extern unsigned int uvc_timeout_param;
|
||||
|
||||
#define uvc_trace(flag, msg...) \
|
||||
do { \
|
||||
if (uvc_trace_param & flag) \
|
||||
printk(KERN_DEBUG "uvcvideo: " msg); \
|
||||
} while (0)
|
||||
|
||||
#define uvc_warn_once(dev, warn, msg...) \
|
||||
do { \
|
||||
if (!test_and_set_bit(warn, &dev->warnings)) \
|
||||
printk(KERN_INFO "uvcvideo: " msg); \
|
||||
} while (0)
|
||||
|
||||
#define uvc_printk(level, msg...) \
|
||||
printk(level "uvcvideo: " msg)
|
||||
|
||||
/* --------------------------------------------------------------------------
|
||||
* Internal functions.
|
||||
*/
|
||||
|
||||
/* Core driver */
|
||||
extern struct uvc_driver uvc_driver;
|
||||
|
||||
extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
|
||||
|
||||
/* Video buffers queue management. */
|
||||
extern void uvc_queue_init(struct uvc_video_queue *queue,
|
||||
enum v4l2_buf_type type, int drop_corrupted);
|
||||
extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
|
||||
struct v4l2_requestbuffers *rb);
|
||||
extern void uvc_free_buffers(struct uvc_video_queue *queue);
|
||||
extern int uvc_query_buffer(struct uvc_video_queue *queue,
|
||||
struct v4l2_buffer *v4l2_buf);
|
||||
extern int uvc_queue_buffer(struct uvc_video_queue *queue,
|
||||
struct v4l2_buffer *v4l2_buf);
|
||||
extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
|
||||
struct v4l2_buffer *v4l2_buf, int nonblocking);
|
||||
extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
|
||||
extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
|
||||
extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
|
||||
struct uvc_buffer *buf);
|
||||
extern int uvc_queue_mmap(struct uvc_video_queue *queue,
|
||||
struct vm_area_struct *vma);
|
||||
extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
|
||||
struct file *file, poll_table *wait);
|
||||
#ifndef CONFIG_MMU
|
||||
extern unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
|
||||
unsigned long pgoff);
|
||||
#endif
|
||||
extern int uvc_queue_allocated(struct uvc_video_queue *queue);
|
||||
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
|
||||
{
|
||||
return vb2_is_streaming(&queue->queue);
|
||||
}
|
||||
|
||||
/* V4L2 interface */
|
||||
extern const struct v4l2_file_operations uvc_fops;
|
||||
|
||||
/* Media controller */
|
||||
extern int uvc_mc_register_entities(struct uvc_video_chain *chain);
|
||||
extern void uvc_mc_cleanup_entity(struct uvc_entity *entity);
|
||||
|
||||
/* Video */
|
||||
extern int uvc_video_init(struct uvc_streaming *stream);
|
||||
extern int uvc_video_suspend(struct uvc_streaming *stream);
|
||||
extern int uvc_video_resume(struct uvc_streaming *stream, int reset);
|
||||
extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
|
||||
extern int uvc_probe_video(struct uvc_streaming *stream,
|
||||
struct uvc_streaming_control *probe);
|
||||
extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
|
||||
__u8 intfnum, __u8 cs, void *data, __u16 size);
|
||||
void uvc_video_clock_update(struct uvc_streaming *stream,
|
||||
struct v4l2_buffer *v4l2_buf,
|
||||
struct uvc_buffer *buf);
|
||||
|
||||
/* Status */
|
||||
extern int uvc_status_init(struct uvc_device *dev);
|
||||
extern void uvc_status_cleanup(struct uvc_device *dev);
|
||||
extern int uvc_status_start(struct uvc_device *dev);
|
||||
extern void uvc_status_stop(struct uvc_device *dev);
|
||||
extern int uvc_status_suspend(struct uvc_device *dev);
|
||||
extern int uvc_status_resume(struct uvc_device *dev);
|
||||
|
||||
/* Controls */
|
||||
extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops;
|
||||
|
||||
extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
|
||||
struct v4l2_queryctrl *v4l2_ctrl);
|
||||
extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
|
||||
struct v4l2_querymenu *query_menu);
|
||||
|
||||
extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
|
||||
const struct uvc_control_mapping *mapping);
|
||||
extern int uvc_ctrl_init_device(struct uvc_device *dev);
|
||||
extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
|
||||
extern int uvc_ctrl_resume_device(struct uvc_device *dev);
|
||||
|
||||
extern int uvc_ctrl_begin(struct uvc_video_chain *chain);
|
||||
extern int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
|
||||
const struct v4l2_ext_control *xctrls,
|
||||
unsigned int xctrls_count);
|
||||
static inline int uvc_ctrl_commit(struct uvc_fh *handle,
|
||||
const struct v4l2_ext_control *xctrls,
|
||||
unsigned int xctrls_count)
|
||||
{
|
||||
return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count);
|
||||
}
|
||||
static inline int uvc_ctrl_rollback(struct uvc_fh *handle)
|
||||
{
|
||||
return __uvc_ctrl_commit(handle, 1, NULL, 0);
|
||||
}
|
||||
|
||||
extern int uvc_ctrl_get(struct uvc_video_chain *chain,
|
||||
struct v4l2_ext_control *xctrl);
|
||||
extern int uvc_ctrl_set(struct uvc_video_chain *chain,
|
||||
struct v4l2_ext_control *xctrl);
|
||||
|
||||
extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
|
||||
struct uvc_xu_control_query *xqry);
|
||||
|
||||
/* Utility functions */
|
||||
extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
|
||||
unsigned int n_terms, unsigned int threshold);
|
||||
extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
|
||||
uint32_t denominator);
|
||||
extern struct usb_host_endpoint *uvc_find_endpoint(
|
||||
struct usb_host_interface *alts, __u8 epaddr);
|
||||
|
||||
/* Quirks support */
|
||||
void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
|
||||
struct uvc_buffer *buf);
|
||||
|
||||
/* debugfs and statistics */
|
||||
int uvc_debugfs_init(void);
|
||||
void uvc_debugfs_cleanup(void);
|
||||
int uvc_debugfs_init_stream(struct uvc_streaming *stream);
|
||||
void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream);
|
||||
|
||||
size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf,
|
||||
size_t size);
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user