diff options
Diffstat (limited to 'drivers/usb/gadget/function/uvc.h')
| -rw-r--r-- | drivers/usb/gadget/function/uvc.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index cb35687b11e7..9e79cbe50715 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -71,6 +71,11 @@ extern unsigned int uvc_gadget_trace_param; #define UVCG_REQUEST_HEADER_LEN 12 +#define UVCG_REQ_MAX_INT_COUNT 16 +#define UVCG_REQ_MAX_ZERO_COUNT (2 * UVCG_REQ_MAX_INT_COUNT) + +#define UVCG_STREAMING_MIN_BUFFERS 2 + /* ------------------------------------------------------------------------ * Structures */ @@ -91,16 +96,24 @@ struct uvc_video { struct work_struct pump; struct workqueue_struct *async_wq; + struct kthread_worker *kworker; + struct kthread_work hw_submit; + + atomic_t queued; + /* Frame parameters */ u8 bpp; u32 fcc; unsigned int width; unsigned int height; unsigned int imagesize; + unsigned int interval; struct mutex mutex; /* protects frame parameters */ unsigned int uvc_num_requests; + unsigned int reqs_per_frame; + /* Requests */ bool is_enabled; /* tracks whether video stream is enabled */ unsigned int req_size; @@ -183,6 +196,11 @@ struct uvc_file_handle { #define to_uvc_file_handle(handle) \ container_of(handle, struct uvc_file_handle, vfh) +static inline struct uvc_file_handle *file_to_uvc_file_handle(struct file *filp) +{ + return container_of(file_to_v4l2_fh(filp), struct uvc_file_handle, vfh); +} + /* ------------------------------------------------------------------------ * Functions */ |