1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * cx18 file operation functions 4 * 5 * Derived from ivtv-fileops.h 6 * 7 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 8 */ 9 10 /* Testing/Debugging */ 11 int cx18_v4l2_open(struct file *filp); 12 ssize_t cx18_v4l2_read(struct file *filp, char __user *buf, size_t count, 13 loff_t *pos); 14 ssize_t cx18_v4l2_write(struct file *filp, const char __user *buf, size_t count, 15 loff_t *pos); 16 int cx18_v4l2_close(struct file *filp); 17 __poll_t cx18_v4l2_enc_poll(struct file *filp, poll_table *wait); 18 int cx18_start_capture(struct cx18_open_id *id); 19 void cx18_stop_capture(struct cx18_stream *s, int gop_end); 20 void cx18_mute(struct cx18 *cx); 21 void cx18_unmute(struct cx18 *cx); 22 int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma); 23 void cx18_clear_queue(struct cx18_stream *s, enum vb2_buffer_state state); 24 void cx18_vb_timeout(struct timer_list *t); 25 26 /* Shared with cx18-alsa module */ 27 int cx18_claim_stream(struct cx18_open_id *id, int type); 28 void cx18_release_stream(struct cx18_stream *s); 29