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