1/* 2 * VPIF display header file 3 * 4 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation version 2. 9 * 10 * This program is distributed .as is. WITHOUT ANY WARRANTY of any 11 * kind, whether express or implied; without even the implied warranty 12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 */ 15 16#ifndef DAVINCIHD_DISPLAY_H 17#define DAVINCIHD_DISPLAY_H 18 19/* Header files */ 20#include <media/videobuf2-dma-contig.h> 21#include <media/v4l2-device.h> 22 23#include "vpif.h" 24 25/* Macros */ 26#define VPIF_DISPLAY_VERSION "0.0.2" 27 28#define VPIF_VALID_FIELD(field) \ 29 (((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \ 30 (((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \ 31 (V4L2_FIELD_SEQ_BT == field))) 32 33#define VPIF_DISPLAY_MAX_DEVICES (2) 34#define VPIF_SLICED_BUF_SIZE (256) 35#define VPIF_SLICED_MAX_SERVICES (3) 36#define VPIF_VIDEO_INDEX (0) 37#define VPIF_VBI_INDEX (1) 38#define VPIF_HBI_INDEX (2) 39 40/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/ 41#define VPIF_NUMOBJECTS (1) 42 43/* Macros */ 44#define ISALIGNED(a) (0 == ((a) & 7)) 45 46/* enumerated data types */ 47/* Enumerated data type to give id to each device per channel */ 48enum vpif_channel_id { 49 VPIF_CHANNEL2_VIDEO = 0, /* Channel2 Video */ 50 VPIF_CHANNEL3_VIDEO, /* Channel3 Video */ 51}; 52 53/* structures */ 54 55struct video_obj { 56 enum v4l2_field buf_field; 57 u32 latest_only; /* indicate whether to return 58 * most recent displayed frame only */ 59 v4l2_std_id stdid; /* Currently selected or default 60 * standard */ 61 struct v4l2_dv_timings dv_timings; 62}; 63 64struct vpif_disp_buffer { 65 struct vb2_buffer vb; 66 struct list_head list; 67}; 68 69struct common_obj { 70 /* Buffer specific parameters */ 71 u8 *fbuffers[VIDEO_MAX_FRAME]; /* List of buffer pointers for 72 * storing frames */ 73 u32 numbuffers; /* number of buffers */ 74 struct vpif_disp_buffer *cur_frm; /* Pointer pointing to current 75 * vb2_buffer */ 76 struct vpif_disp_buffer *next_frm; /* Pointer pointing to next 77 * vb2_buffer */ 78 enum v4l2_memory memory; /* This field keeps track of 79 * type of buffer exchange 80 * method user has selected */ 81 struct v4l2_format fmt; /* Used to store the format */ 82 struct vb2_queue buffer_queue; /* Buffer queue used in 83 * video-buf */ 84 /* allocator-specific contexts for each plane */ 85 struct vb2_alloc_ctx *alloc_ctx; 86 87 struct list_head dma_queue; /* Queue of filled frames */ 88 spinlock_t irqlock; /* Used in video-buf */ 89 90 /* channel specific parameters */ 91 struct mutex lock; /* lock used to access this 92 * structure */ 93 u32 io_usrs; /* number of users performing 94 * IO */ 95 u8 started; /* Indicates whether streaming 96 * started */ 97 u32 ytop_off; /* offset of Y top from the 98 * starting of the buffer */ 99 u32 ybtm_off; /* offset of Y bottom from the 100 * starting of the buffer */ 101 u32 ctop_off; /* offset of C top from the 102 * starting of the buffer */ 103 u32 cbtm_off; /* offset of C bottom from the 104 * starting of the buffer */ 105 /* Function pointer to set the addresses */ 106 void (*set_addr) (unsigned long, unsigned long, 107 unsigned long, unsigned long); 108 u32 height; 109 u32 width; 110}; 111 112struct channel_obj { 113 /* V4l2 specific parameters */ 114 struct video_device *video_dev; /* Identifies video device for 115 * this channel */ 116 struct v4l2_prio_state prio; /* Used to keep track of state of 117 * the priority */ 118 atomic_t usrs; /* number of open instances of 119 * the channel */ 120 u32 field_id; /* Indicates id of the field 121 * which is being displayed */ 122 u8 initialized; /* flag to indicate whether 123 * encoder is initialized */ 124 u32 output_idx; /* Current output index */ 125 struct v4l2_subdev *sd; /* Current output subdev(may be NULL) */ 126 127 enum vpif_channel_id channel_id;/* Identifies channel */ 128 struct vpif_params vpifparams; 129 struct common_obj common[VPIF_NUMOBJECTS]; 130 struct video_obj video; 131}; 132 133/* File handle structure */ 134struct vpif_fh { 135 struct channel_obj *channel; /* pointer to channel object for 136 * opened device */ 137 u8 io_allowed[VPIF_NUMOBJECTS]; /* Indicates whether this file handle 138 * is doing IO */ 139 enum v4l2_priority prio; /* Used to keep track priority of 140 * this instance */ 141 u8 initialized; /* Used to keep track of whether this 142 * file handle has initialized 143 * channel or not */ 144}; 145 146/* vpif device structure */ 147struct vpif_device { 148 struct v4l2_device v4l2_dev; 149 struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS]; 150 struct v4l2_subdev **sd; 151 struct v4l2_async_notifier notifier; 152 struct vpif_display_config *config; 153}; 154 155struct vpif_config_params { 156 u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; 157 u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; 158 u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS]; 159 u32 video_limit[VPIF_DISPLAY_NUM_CHANNELS]; 160 u8 min_numbuffers; 161}; 162 163#endif /* DAVINCIHD_DISPLAY_H */ 164