1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3   cx231xx_vbi.h - driver for Conexant Cx23100/101/102 USB video capture devices
4
5   Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
6		Based on cx88 driver
7
8 */
9
10#ifndef _CX231XX_VBI_H
11#define _CX231XX_VBI_H
12
13extern struct vb2_ops cx231xx_vbi_qops;
14
15#define   NTSC_VBI_START_LINE 10	/* line 10 - 21 */
16#define   NTSC_VBI_END_LINE   21
17#define   NTSC_VBI_LINES	  (NTSC_VBI_END_LINE-NTSC_VBI_START_LINE+1)
18
19#define   PAL_VBI_START_LINE  6
20#define   PAL_VBI_END_LINE    23
21#define   PAL_VBI_LINES       (PAL_VBI_END_LINE-PAL_VBI_START_LINE+1)
22
23#define   VBI_STRIDE            1440
24#define   VBI_SAMPLES_PER_LINE  1440
25
26#define   CX231XX_NUM_VBI_PACKETS       4
27#define   CX231XX_NUM_VBI_BUFS          5
28
29/* stream functions */
30int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
31			  int num_bufs, int max_pkt_size,
32			  int (*bulk_copy) (struct cx231xx *dev,
33					    struct urb *urb));
34
35void cx231xx_uninit_vbi_isoc(struct cx231xx *dev);
36
37/* vbi data copy functions */
38u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
39			 u8 sav_eav, u8 *p_buffer, u32 buffer_size);
40
41u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
42			  u8 *p_line, u32 length, int field_number);
43
44void cx231xx_reset_vbi_buffer(struct cx231xx *dev,
45			      struct cx231xx_dmaqueue *dma_q);
46
47int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
48			u8 *p_buffer, u32 bytes_to_copy);
49
50u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev,
51			      struct cx231xx_dmaqueue *dma_q);
52
53#endif
54