14 #include <linux/usb/uvc.h>
24 #include "uvc.h"
85 static struct uvcg_format *find_format_by_index(struct uvc_device *uvc, int index)  in find_format_by_index()  argument
91 	list_for_each_entry(format, &uvc->header->formats, entry) {  in find_format_by_index()
102 static struct uvcg_frame *find_frame_by_index(struct uvc_device *uvc,  in find_frame_by_index()  argument
110 	list_for_each_entry(format, &uvc->header->formats, entry) {  in find_frame_by_index()
124 static struct uvcg_format *find_format_by_pix(struct uvc_device *uvc,  in find_format_by_pix()  argument
130 	list_for_each_entry(format, &uvc->header->formats, entry) {  in find_format_by_pix()
145 static struct uvcg_frame *find_closest_frame_by_size(struct uvc_device *uvc,  in find_closest_frame_by_size()  argument
149 	struct uvc_video *video = &uvc->video;  in find_closest_frame_by_size()
161 	list_for_each_entry(format, &uvc->header->formats, entry) {  in find_closest_frame_by_size()
184 		uvcg_dbg(&video->uvc->func, "Unsupported size %ux%u\n", rw, rh);  in find_closest_frame_by_size()
194 uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data)  in uvc_send_response()  argument
196 	struct usb_composite_dev *cdev = uvc->func.config->cdev;  in uvc_send_response()
197 	struct usb_request *req = uvc->control_req;  in uvc_send_response()
202 	req->length = min_t(unsigned int, uvc->event_length, data->length);  in uvc_send_response()
205 	req->zero = data->length < uvc->event_length;  in uvc_send_response()
220 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_querycap()  local
221 	struct usb_composite_dev *cdev = uvc->func.config->cdev;  in uvc_v4l2_querycap()
234 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_get_format()  local
235 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_get_format()
253 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_try_format()  local
254 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_try_format()
264 	uvcg_dbg(&uvc->func, "Trying format 0x%08x (%c%c%c%c): %ux%u\n",  in uvc_v4l2_try_format()
269 	uformat = find_format_by_pix(uvc, fmt->fmt.pix.pixelformat);  in uvc_v4l2_try_format()
273 	uframe = find_closest_frame_by_size(uvc, uformat,  in uvc_v4l2_try_format()
311 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_set_format()  local
312 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_set_format()
332 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_g_parm()  local
333 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_g_parm()
345 	uvcg_dbg(&uvc->func, "Getting frame interval of %u/%u (%u)\n",  in uvc_v4l2_g_parm()
359 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_s_parm()  local
360 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_s_parm()
371 	uvcg_dbg(&uvc->func, "Setting frame interval to %u/%u (%u)\n",  in uvc_v4l2_s_parm()
383 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_enum_frameintervals()  local
388 	uformat = find_format_by_pix(uvc, fival->pixel_format);  in uvc_v4l2_enum_frameintervals()
422 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_enum_framesizes()  local
426 	uformat = find_format_by_pix(uvc, fsize->pixel_format);  in uvc_v4l2_enum_framesizes()
433 	uframe = find_frame_by_index(uvc, uformat, fsize->index + 1);  in uvc_v4l2_enum_framesizes()
448 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_enum_format()  local
452 	if (f->index >= uvc->header->num_fmt)  in uvc_v4l2_enum_format()
455 	uformat = find_format_by_index(uvc, f->index + 1);  in uvc_v4l2_enum_format()
472 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_reqbufs()  local
473 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_reqbufs()
485 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_querybuf()  local
486 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_querybuf()
495 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_qbuf()  local
496 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_qbuf()
503 	if (uvc->state == UVC_STATE_STREAMING)  in uvc_v4l2_qbuf()
513 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_dqbuf()  local
514 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_dqbuf()
523 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_streamon()  local
524 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_streamon()
530 	/* Enable UVC video. */  in uvc_v4l2_streamon()
539 	uvc_function_setup_continue(uvc, 0);  in uvc_v4l2_streamon()
540 	uvc->state = UVC_STATE_STREAMING;  in uvc_v4l2_streamon()
549 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_streamoff()  local
550 	struct uvc_video *video = &uvc->video;  in uvc_v4l2_streamoff()
560 	if (uvc->state != UVC_STATE_STREAMING)  in uvc_v4l2_streamoff()
563 	uvc->state = UVC_STATE_CONNECTED;  in uvc_v4l2_streamoff()
564 	uvc_function_setup_continue(uvc, 1);  in uvc_v4l2_streamoff()
572 	struct uvc_device *uvc = video_get_drvdata(fh->vdev);  in uvc_v4l2_subscribe_event()  local
579 	guard(mutex)(&uvc->lock);  in uvc_v4l2_subscribe_event()
581 	if (sub->type == UVC_EVENT_SETUP && uvc->func_connected)  in uvc_v4l2_subscribe_event()
589 		uvc->func_connected = true;  in uvc_v4l2_subscribe_event()
591 		uvc_function_connect(uvc);  in uvc_v4l2_subscribe_event()
597 static void uvc_v4l2_disable(struct uvc_device *uvc)  in uvc_v4l2_disable()  argument
599 	uvc_function_disconnect(uvc);  in uvc_v4l2_disable()
600 	uvcg_video_disable(&uvc->video);  in uvc_v4l2_disable()
601 	uvcg_free_buffers(&uvc->video.queue);  in uvc_v4l2_disable()
602 	scoped_guard(mutex, &uvc->lock)  in uvc_v4l2_disable()
603 		uvc->func_connected = false;  in uvc_v4l2_disable()
604 	wake_up_interruptible(&uvc->func_connected_queue);  in uvc_v4l2_disable()
611 	struct uvc_device *uvc = video_get_drvdata(fh->vdev);  in uvc_v4l2_unsubscribe_event()  local
620 		uvc_v4l2_disable(uvc);  in uvc_v4l2_unsubscribe_event()
632 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_ioctl_default()  local
636 		return uvc_send_response(uvc, arg);  in uvc_v4l2_ioctl_default()
672 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_open()  local
682 	handle->device = &uvc->video;  in uvc_v4l2_open()
691 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_release()  local
697 		uvc_v4l2_disable(uvc);  in uvc_v4l2_release()
711 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_mmap()  local
713 	return uvcg_queue_mmap(&uvc->video.queue, vma);  in uvc_v4l2_mmap()
720 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvc_v4l2_poll()  local
722 	return uvcg_queue_poll(&uvc->video.queue, file, wait);  in uvc_v4l2_poll()
731 	struct uvc_device *uvc = video_get_drvdata(vdev);  in uvcg_v4l2_get_unmapped_area()  local
733 	return uvcg_queue_get_unmapped_area(&uvc->video.queue, pgoff);  in uvcg_v4l2_get_unmapped_area()