diff options
Diffstat (limited to 'drivers/media/usb/uvc/uvcvideo.h')
| -rw-r--r-- | drivers/media/usb/uvc/uvcvideo.h | 69 |
1 files changed, 62 insertions, 7 deletions
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index c0cbd833d0a4..9b41b14ce076 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -154,6 +154,9 @@ #define UVC_GUID_FORMAT_INVI \ { 'I', 'N', 'V', 'I', 0xdb, 0x57, 0x49, 0x5e, \ 0x8e, 0x3f, 0xf4, 0x79, 0x53, 0x2b, 0x94, 0x6f} +#define UVC_GUID_FORMAT_CNF4 \ + { 'C', ' ', ' ', ' ', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} #define UVC_GUID_FORMAT_D3DFMT_L8 \ {0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, \ @@ -410,6 +413,9 @@ struct uvc_buffer { unsigned int bytesused; u32 pts; + + /* Asynchronous buffer handling. */ + struct kref ref; }; #define UVC_QUEUE_DISCONNECTED (1 << 0) @@ -487,6 +493,44 @@ struct uvc_stats_stream { #define UVC_METATADA_BUF_SIZE 1024 +/** + * struct uvc_copy_op: Context structure to schedule asynchronous memcpy + * + * @buf: active buf object for this operation + * @dst: copy destination address + * @src: copy source address + * @len: copy length + */ +struct uvc_copy_op { + struct uvc_buffer *buf; + void *dst; + const __u8 *src; + size_t len; +}; + +/** + * struct uvc_urb - URB context management structure + * + * @urb: the URB described by this context structure + * @stream: UVC streaming context + * @buffer: memory storage for the URB + * @dma: DMA coherent addressing for the urb_buffer + * @async_operations: counter to indicate the number of copy operations + * @copy_operations: work descriptors for asynchronous copy operations + * @work: work queue entry for asynchronous decode + */ +struct uvc_urb { + struct urb *urb; + struct uvc_streaming *stream; + + char *buffer; + dma_addr_t dma; + + unsigned int async_operations; + struct uvc_copy_op copy_operations[UVC_MAX_PACKETS]; + struct work_struct work; +}; + struct uvc_streaming { struct list_head list; struct uvc_device *dev; @@ -517,8 +561,9 @@ struct uvc_streaming { /* Buffers queue. */ unsigned int frozen : 1; struct uvc_video_queue queue; - void (*decode) (struct urb *urb, struct uvc_streaming *video, - struct uvc_buffer *buf, struct uvc_buffer *meta_buf); + struct workqueue_struct *async_wq; + void (*decode)(struct uvc_urb *uvc_urb, struct uvc_buffer *buf, + struct uvc_buffer *meta_buf); struct { struct video_device vdev; @@ -535,9 +580,7 @@ struct uvc_streaming { u32 max_payload_size; } bulk; - struct urb *urb[UVC_URBS]; - char *urb_buffer[UVC_URBS]; - dma_addr_t urb_dma[UVC_URBS]; + struct uvc_urb uvc_urb[UVC_URBS]; unsigned int urb_size; u32 sequence; @@ -572,6 +615,14 @@ struct uvc_streaming { } clock; }; +#define for_each_uvc_urb(uvc_urb, uvc_streaming) \ + for ((uvc_urb) = &(uvc_streaming)->uvc_urb[0]; \ + (uvc_urb) < &(uvc_streaming)->uvc_urb[UVC_URBS]; \ + ++(uvc_urb)) + +#define uvc_urb_index(uvc_urb) \ + (unsigned int)((uvc_urb) - (&(uvc_urb)->stream->uvc_urb[0])) + struct uvc_device_info { u32 quirks; u32 meta_format; @@ -711,6 +762,8 @@ int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type); void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect); struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf); +struct uvc_buffer *uvc_queue_get_current_buffer(struct uvc_video_queue *queue); +void uvc_queue_buffer_release(struct uvc_buffer *buf); int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma); __poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, @@ -737,7 +790,8 @@ void uvc_mc_cleanup_entity(struct uvc_entity *entity); int uvc_video_init(struct uvc_streaming *stream); int uvc_video_suspend(struct uvc_streaming *stream); int uvc_video_resume(struct uvc_streaming *stream, int reset); -int uvc_video_enable(struct uvc_streaming *stream, int enable); +int uvc_video_start_streaming(struct uvc_streaming *stream); +void uvc_video_stop_streaming(struct uvc_streaming *stream); int uvc_probe_video(struct uvc_streaming *stream, struct uvc_streaming_control *probe); int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit, @@ -757,6 +811,7 @@ int uvc_register_video_device(struct uvc_device *dev, /* Status */ int uvc_status_init(struct uvc_device *dev); +void uvc_status_unregister(struct uvc_device *dev); void uvc_status_cleanup(struct uvc_device *dev); int uvc_status_start(struct uvc_device *dev, gfp_t flags); void uvc_status_stop(struct uvc_device *dev); @@ -806,7 +861,7 @@ 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, +void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf, struct uvc_buffer *meta_buf); |