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 <linux/videodev2.h> 26 #include <media/v4l2-common.h> 27 #include <media/v4l2-device.h> 28 #include <media/videobuf-core.h> 29 #include <media/videobuf-dma-contig.h> 30 #include <media/davinci/vpif_types.h> 31 32 #include "vpif.h" 33 34 /* Macros */ 35 #define VPIF_CAPTURE_VERSION "0.0.2" 36 37 #define VPIF_VALID_FIELD(field) (((V4L2_FIELD_ANY == field) || \ 38 (V4L2_FIELD_NONE == field)) || \ 39 (((V4L2_FIELD_INTERLACED == field) || \ 40 (V4L2_FIELD_SEQ_TB == field)) || \ 41 (V4L2_FIELD_SEQ_BT == field))) 42 43 #define VPIF_CAPTURE_MAX_DEVICES 2 44 #define VPIF_VIDEO_INDEX 0 45 #define VPIF_NUMBER_OF_OBJECTS 1 46 47 /* Enumerated data type to give id to each device per channel */ 48 enum vpif_channel_id { 49 VPIF_CHANNEL0_VIDEO = 0, 50 VPIF_CHANNEL1_VIDEO, 51 }; 52 53 struct video_obj { 54 enum v4l2_field buf_field; 55 /* Currently selected or default standard */ 56 v4l2_std_id stdid; 57 u32 dv_preset; 58 struct v4l2_bt_timings bt_timings; 59 /* This is to track the last input that is passed to application */ 60 u32 input_idx; 61 }; 62 63 struct common_obj { 64 /* Pointer pointing to current v4l2_buffer */ 65 struct videobuf_buffer *cur_frm; 66 /* Pointer pointing to current v4l2_buffer */ 67 struct videobuf_buffer *next_frm; 68 /* 69 * This field keeps track of type of buffer exchange mechanism 70 * user has selected 71 */ 72 enum v4l2_memory memory; 73 /* Used to store pixel format */ 74 struct v4l2_format fmt; 75 /* Buffer queue used in video-buf */ 76 struct videobuf_queue buffer_queue; 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 }; 103 104 struct 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 /* index into sd table */ 118 int curr_sd_index; 119 /* ptr to current sub device information */ 120 struct vpif_subdev_info *curr_subdev_info; 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 */ 130 struct 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 }; 140 141 struct vpif_device { 142 struct v4l2_device v4l2_dev; 143 struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS]; 144 struct v4l2_subdev **sd; 145 }; 146 147 struct vpif_config_params { 148 u8 min_numbuffers; 149 u8 numbuffers[VPIF_CAPTURE_NUM_CHANNELS]; 150 s8 device_type; 151 u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; 152 u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; 153 u8 default_device[VPIF_CAPTURE_NUM_CHANNELS]; 154 u8 max_device_type; 155 }; 156 /* Struct which keeps track of the line numbers for the sliced vbi service */ 157 struct vpif_service_line { 158 u16 service_id; 159 u16 service_line[2]; 160 }; 161 #endif /* End of __KERNEL__ */ 162 #endif /* VPIF_CAPTURE_H */ 163