1/* 2 * Copyright (C) 2009 Texas Instruments Inc 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19#ifndef VPIF_CAPTURE_H 20#define VPIF_CAPTURE_H 21 22#ifdef __KERNEL__ 23 24/* Header files */ 25#include <media/videobuf2-dma-contig.h> 26#include <media/v4l2-device.h> 27 28#include "vpif.h" 29 30/* Macros */ 31#define VPIF_CAPTURE_VERSION "0.0.2" 32 33#define VPIF_VALID_FIELD(field) (((V4L2_FIELD_ANY == field) || \ 34 (V4L2_FIELD_NONE == field)) || \ 35 (((V4L2_FIELD_INTERLACED == field) || \ 36 (V4L2_FIELD_SEQ_TB == field)) || \ 37 (V4L2_FIELD_SEQ_BT == field))) 38 39#define VPIF_CAPTURE_MAX_DEVICES 2 40#define VPIF_VIDEO_INDEX 0 41#define VPIF_NUMBER_OF_OBJECTS 1 42 43/* Enumerated data type to give id to each device per channel */ 44enum vpif_channel_id { 45 VPIF_CHANNEL0_VIDEO = 0, 46 VPIF_CHANNEL1_VIDEO, 47}; 48 49struct video_obj { 50 enum v4l2_field buf_field; 51 /* Currently selected or default standard */ 52 v4l2_std_id stdid; 53 struct v4l2_dv_timings dv_timings; 54}; 55 56struct vpif_cap_buffer { 57 struct vb2_buffer vb; 58 struct list_head list; 59}; 60 61struct common_obj { 62 /* Pointer pointing to current v4l2_buffer */ 63 struct vpif_cap_buffer *cur_frm; 64 /* Pointer pointing to current v4l2_buffer */ 65 struct vpif_cap_buffer *next_frm; 66 /* 67 * This field keeps track of type of buffer exchange mechanism 68 * user has selected 69 */ 70 enum v4l2_memory memory; 71 /* Used to store pixel format */ 72 struct v4l2_format fmt; 73 /* Buffer queue used in video-buf */ 74 struct vb2_queue buffer_queue; 75 /* allocator-specific contexts for each plane */ 76 struct vb2_alloc_ctx *alloc_ctx; 77 /* Queue of filled frames */ 78 struct list_head dma_queue; 79 /* Used in video-buf */ 80 spinlock_t irqlock; 81 /* lock used to access this structure */ 82 struct mutex lock; 83 /* number of users performing IO */ 84 u32 io_usrs; 85 /* Indicates whether streaming started */ 86 u8 started; 87 /* Function pointer to set the addresses */ 88 void (*set_addr) (unsigned long, unsigned long, unsigned long, 89 unsigned long); 90 /* offset where Y top starts from the starting of the buffer */ 91 u32 ytop_off; 92 /* offset where Y bottom starts from the starting of the buffer */ 93 u32 ybtm_off; 94 /* offset where C top starts from the starting of the buffer */ 95 u32 ctop_off; 96 /* offset where C bottom starts from the starting of the buffer */ 97 u32 cbtm_off; 98 /* Indicates width of the image data */ 99 u32 width; 100 /* Indicates height of the image data */ 101 u32 height; 102}; 103 104struct channel_obj { 105 /* Identifies video device for this channel */ 106 struct video_device *video_dev; 107 /* Used to keep track of state of the priority */ 108 struct v4l2_prio_state prio; 109 /* number of open instances of the channel */ 110 int usrs; 111 /* Indicates id of the field which is being displayed */ 112 u32 field_id; 113 /* flag to indicate whether decoder is initialized */ 114 u8 initialized; 115 /* Identifies channel */ 116 enum vpif_channel_id channel_id; 117 /* Current input */ 118 u32 input_idx; 119 /* subdev corresponding to the current input, may be NULL */ 120 struct v4l2_subdev *sd; 121 /* vpif configuration params */ 122 struct vpif_params vpifparams; 123 /* common object array */ 124 struct common_obj common[VPIF_NUMBER_OF_OBJECTS]; 125 /* video object */ 126 struct video_obj video; 127}; 128 129/* File handle structure */ 130struct vpif_fh { 131 /* pointer to channel object for opened device */ 132 struct channel_obj *channel; 133 /* Indicates whether this file handle is doing IO */ 134 u8 io_allowed[VPIF_NUMBER_OF_OBJECTS]; 135 /* Used to keep track priority of this instance */ 136 enum v4l2_priority prio; 137 /* Used to indicate channel is initialize or not */ 138 u8 initialized; 139}; 140 141struct vpif_device { 142 struct v4l2_device v4l2_dev; 143 struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS]; 144 struct v4l2_subdev **sd; 145 struct v4l2_async_notifier notifier; 146 struct vpif_capture_config *config; 147}; 148 149struct vpif_config_params { 150 u8 min_numbuffers; 151 u8 numbuffers[VPIF_CAPTURE_NUM_CHANNELS]; 152 s8 device_type; 153 u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; 154 u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; 155 u8 default_device[VPIF_CAPTURE_NUM_CHANNELS]; 156 u32 video_limit[VPIF_CAPTURE_NUM_CHANNELS]; 157 u8 max_device_type; 158}; 159 160#endif /* End of __KERNEL__ */ 161#endif /* VPIF_CAPTURE_H */ 162