vpif_display.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * VPIF display header file
  4 *
  5 * Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com/
  6 */
  7
  8#ifndef VPIF_DISPLAY_H
  9#define VPIF_DISPLAY_H
 10
 11/* Header files */
 12#include <media/videobuf2-dma-contig.h>
 13#include <media/v4l2-device.h>
 14
 15#include "vpif.h"
 16
 17/* Macros */
 18#define VPIF_DISPLAY_VERSION	"0.0.2"
 19
 20#define VPIF_VALID_FIELD(field) \
 21	(((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
 22	(((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
 23	(V4L2_FIELD_SEQ_BT == field)))
 24
 25#define VPIF_DISPLAY_MAX_DEVICES	(2)
 26#define VPIF_SLICED_BUF_SIZE		(256)
 27#define VPIF_SLICED_MAX_SERVICES	(3)
 28#define VPIF_VIDEO_INDEX		(0)
 29#define VPIF_VBI_INDEX			(1)
 30#define VPIF_HBI_INDEX			(2)
 31
 32/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
 33#define VPIF_NUMOBJECTS	(1)
 34
 35/* Macros */
 36#define ISALIGNED(a)    (0 == ((a) & 7))
 37
 38/* enumerated data types */
 39/* Enumerated data type to give id to each device per channel */
 40enum vpif_channel_id {
 41	VPIF_CHANNEL2_VIDEO = 0,	/* Channel2 Video */
 42	VPIF_CHANNEL3_VIDEO,		/* Channel3 Video */
 43};
 44
 45/* structures */
 46
 47struct video_obj {
 48	enum v4l2_field buf_field;
 49	u32 latest_only;		/* indicate whether to return
 50					 * most recent displayed frame only */
 51	v4l2_std_id stdid;		/* Currently selected or default
 52					 * standard */
 53	struct v4l2_dv_timings dv_timings;
 54};
 55
 56struct vpif_disp_buffer {
 57	struct vb2_v4l2_buffer vb;
 58	struct list_head list;
 59};
 60
 61struct common_obj {
 62	struct vpif_disp_buffer *cur_frm;	/* Pointer pointing to current
 63						 * vb2_buffer */
 64	struct vpif_disp_buffer *next_frm;	/* Pointer pointing to next
 65						 * vb2_buffer */
 66	struct v4l2_format fmt;			/* Used to store the format */
 67	struct vb2_queue buffer_queue;		/* Buffer queue used in vb2 */
 68
 69	struct list_head dma_queue;		/* Queue of filled frames */
 70	spinlock_t irqlock;			/* Used for video buffer
 71						 * handling */
 72
 73	/* channel specific parameters */
 74	struct mutex lock;			/* lock used to access this
 75						 * structure */
 76	u32 ytop_off;				/* offset of Y top from the
 77						 * starting of the buffer */
 78	u32 ybtm_off;				/* offset of Y bottom from the
 79						 * starting of the buffer */
 80	u32 ctop_off;				/* offset of C top from the
 81						 * starting of the buffer */
 82	u32 cbtm_off;				/* offset of C bottom from the
 83						 * starting of the buffer */
 84	/* Function pointer to set the addresses */
 85	void (*set_addr)(unsigned long, unsigned long,
 86				unsigned long, unsigned long);
 87	u32 height;
 88	u32 width;
 89};
 90
 91struct channel_obj {
 92	/* V4l2 specific parameters */
 93	struct video_device video_dev;	/* Identifies video device for
 94					 * this channel */
 95	u32 field_id;			/* Indicates id of the field
 96					 * which is being displayed */
 97	u8 initialized;			/* flag to indicate whether
 98					 * encoder is initialized */
 99	u32 output_idx;			/* Current output index */
100	struct v4l2_subdev *sd;		/* Current output subdev(may be NULL) */
101
102	enum vpif_channel_id channel_id;/* Identifies channel */
103	struct vpif_params vpifparams;
104	struct common_obj common[VPIF_NUMOBJECTS];
105	struct video_obj video;
106};
107
108/* vpif device structure */
109struct vpif_device {
110	struct v4l2_device v4l2_dev;
111	struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
112	struct v4l2_subdev **sd;
113	struct vpif_display_config *config;
114};
115
116#endif				/* VPIF_DISPLAY_H */