#ifndef _UVC_QUEUE_H_
#define _UVC_QUEUE_H_

#ifdef __KERNEL__

#include <linux/kernel.h>
#include <linux/poll.h>
#include <linux/videodev2.h>
#include <media/videobuf2-v4l2.h>

/* Maximum frame size in bytes, for sanity checking. */
#define UVC_MAX_FRAME_SIZE	(16*1024*1024)
/* Maximum number of video buffers. */
#define UVC_MAX_VIDEO_BUFFERS	32

/* ------------------------------------------------------------------------
 * Structures.
 */

enum uvc_buffer_state {
	UVC_BUF_STATE_IDLE	= 0,
	UVC_BUF_STATE_QUEUED	= 1,
	UVC_BUF_STATE_ACTIVE	= 2,
	UVC_BUF_STATE_DONE	= 3,
	UVC_BUF_STATE_ERROR	= 4,
};

struct uvc_buffer {
	struct vb2_v4l2_buffer buf;
	struct list_head queue;

	enum uvc_buffer_state state;
	void *mem;
	unsigned int length;
	unsigned int bytesused;
};

#define UVC_QUEUE_DISCONNECTED		(1 << 0)
#define UVC_QUEUE_DROP_INCOMPLETE	(1 << 1)
#define UVC_QUEUE_PAUSED		(1 << 2)

struct uvc_video_queue {
	struct vb2_queue queue;

	unsigned int flags;
	__u32 sequence;

	unsigned int buf_used;

	spinlock_t irqlock;	/* Protects flags and irqqueue */
	struct list_head irqqueue;
};

static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
{
	return vb2_is_streaming(&queue->queue);
}

int uvcg_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
		    struct mutex *lock);

void uvcg_free_buffers(struct uvc_video_queue *queue);

int uvcg_alloc_buffers(struct uvc_video_queue *queue,
		       struct v4l2_requestbuffers *rb);

int uvcg_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf);

int uvcg_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf);

int uvcg_dequeue_buffer(struct uvc_video_queue *queue,
			struct v4l2_buffer *buf, int nonblocking);

unsigned int uvcg_queue_poll(struct uvc_video_queue *queue,
			     struct file *file, poll_table *wait);

int uvcg_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma);

#ifndef CONFIG_MMU
unsigned long uvcg_queue_get_unmapped_area(struct uvc_video_queue *queue,
					   unsigned long pgoff);
#endif /* CONFIG_MMU */

void uvcg_queue_cancel(struct uvc_video_queue *queue, int disconnect);

int uvcg_queue_enable(struct uvc_video_queue *queue, int enable);

struct uvc_buffer *uvcg_queue_next_buffer(struct uvc_video_queue *queue,
					  struct uvc_buffer *buf);

struct uvc_buffer *uvcg_queue_head(struct uvc_video_queue *queue);

#endif /* __KERNEL__ */

#endif /* _UVC_QUEUE_H_ */

rep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>host</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>ehci-mv.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='f2557779e1a9cfbf69c99b74da26cc1b2b10e752'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-02 12:34:27 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-02 12:34:27 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>f2557779e1a9cfbf69c99b74da26cc1b2b10e752</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>8ddca65c897199add553948c429072b8bd463692</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>drivers/usb/host/ehci-mv.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-mv.c?id=6d04dfc8966019b8b0977b2cb942351f13d2b178'>6d04dfc8966019b8b0977b2cb942351f13d2b178</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752&amp;id2=6d04dfc8966019b8b0977b2cb942351f13d2b178'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ehci-mv.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ehci-mv.c?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752&amp;id2=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci</div><div class='commit-msg'>Pull PCI fix from Bjorn Helgaas:
 "Configure ASPM on the link from a PCI-to-PCIe bridge (avoids a NULL
  pointer dereference on topologies including these bridges)"

* tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f2557779e1a9cfbf69c99b74da26cc1b2b10e752'>Diffstat</a> (limited to 'drivers/usb/host/ehci-mv.c')</div><table summary='diffstat' class='diffstat'>