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