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 
13 extern 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 */
30 int 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 
35 void cx231xx_uninit_vbi_isoc(struct cx231xx *dev);
36 
37 /* vbi data copy functions */
38 u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
39 			 u8 sav_eav, u8 *p_buffer, u32 buffer_size);
40 
41 u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
42 			  u8 *p_line, u32 length, int field_number);
43 
44 void cx231xx_reset_vbi_buffer(struct cx231xx *dev,
45 			      struct cx231xx_dmaqueue *dma_q);
46 
47 int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
48 			u8 *p_buffer, u32 bytes_to_copy);
49 
50 u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev,
51 			      struct cx231xx_dmaqueue *dma_q);
52 
53 #endif
54