From 00a2430ff07d4e0e0e7e24e02fd8adede333b797 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Tue, 15 Jul 2014 13:09:46 +0200 Subject: usb: gadget: Gadget directory cleanup - group usb functions The drivers/usb/gadget directory contains many files. Files which are related can be distributed into separate directories. This patch moves the USB functions implementations into a separate directory. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/uvc_queue.h | 63 +++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 drivers/usb/gadget/function/uvc_queue.h (limited to 'drivers/usb/gadget/function/uvc_queue.h') diff --git a/drivers/usb/gadget/function/uvc_queue.h b/drivers/usb/gadget/function/uvc_queue.h new file mode 100644 index 000000000000..8e76ce982f1e --- /dev/null +++ b/drivers/usb/gadget/function/uvc_queue.h @@ -0,0 +1,63 @@ +#ifndef _UVC_QUEUE_H_ +#define _UVC_QUEUE_H_ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +/* 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_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; + struct mutex mutex; /* Protects 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); +} + +#endif /* __KERNEL__ */ + +#endif /* _UVC_QUEUE_H_ */ + -- cgit v1.2.3