1 /* 2 * DM646x 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 <linux/videodev2.h> 21 #include <media/v4l2-common.h> 22 #include <media/v4l2-device.h> 23 #include <media/videobuf-core.h> 24 #include <media/videobuf-dma-contig.h> 25 #include <media/davinci/vpif_types.h> 26 27 #include "vpif.h" 28 29 /* Macros */ 30 #define VPIF_DISPLAY_VERSION "0.0.2" 31 32 #define VPIF_VALID_FIELD(field) \ 33 (((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \ 34 (((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \ 35 (V4L2_FIELD_SEQ_BT == field))) 36 37 #define VPIF_DISPLAY_MAX_DEVICES (2) 38 #define VPIF_SLICED_BUF_SIZE (256) 39 #define VPIF_SLICED_MAX_SERVICES (3) 40 #define VPIF_VIDEO_INDEX (0) 41 #define VPIF_VBI_INDEX (1) 42 #define VPIF_HBI_INDEX (2) 43 44 /* Setting it to 1 as HBI/VBI support yet to be added , else 3*/ 45 #define VPIF_NUMOBJECTS (1) 46 47 /* Macros */ 48 #define ISALIGNED(a) (0 == ((a) & 7)) 49 50 /* enumerated data types */ 51 /* Enumerated data type to give id to each device per channel */ 52 enum vpif_channel_id { 53 VPIF_CHANNEL2_VIDEO = 0, /* Channel2 Video */ 54 VPIF_CHANNEL3_VIDEO, /* Channel3 Video */ 55 }; 56 57 /* structures */ 58 59 struct video_obj { 60 enum v4l2_field buf_field; 61 u32 latest_only; /* indicate whether to return 62 * most recent displayed frame only */ 63 v4l2_std_id stdid; /* Currently selected or default 64 * standard */ 65 u32 dv_preset; 66 struct v4l2_bt_timings bt_timings; 67 u32 output_id; /* Current output id */ 68 }; 69 70 struct vbi_obj { 71 int num_services; 72 struct vpif_vbi_params vbiparams; /* vpif parameters for the raw 73 * vbi data */ 74 }; 75 76 struct common_obj { 77 /* Buffer specific parameters */ 78 u8 *fbuffers[VIDEO_MAX_FRAME]; /* List of buffer pointers for 79 * storing frames */ 80 u32 numbuffers; /* number of buffers */ 81 struct videobuf_buffer *cur_frm; /* Pointer pointing to current 82 * videobuf_buffer */ 83 struct videobuf_buffer *next_frm; /* Pointer pointing to next 84 * videobuf_buffer */ 85 enum v4l2_memory memory; /* This field keeps track of 86 * type of buffer exchange 87 * method user has selected */ 88 struct v4l2_format fmt; /* Used to store the format */ 89 struct videobuf_queue buffer_queue; /* Buffer queue used in 90 * video-buf */ 91 struct list_head dma_queue; /* Queue of filled frames */ 92 spinlock_t irqlock; /* Used in video-buf */ 93 94 /* channel specific parameters */ 95 struct mutex lock; /* lock used to access this 96 * structure */ 97 u32 io_usrs; /* number of users performing 98 * IO */ 99 u8 started; /* Indicates whether streaming 100 * started */ 101 u32 ytop_off; /* offset of Y top from the 102 * starting of the buffer */ 103 u32 ybtm_off; /* offset of Y bottom from the 104 * starting of the buffer */ 105 u32 ctop_off; /* offset of C top from the 106 * starting of the buffer */ 107 u32 cbtm_off; /* offset of C bottom from the 108 * starting of the buffer */ 109 /* Function pointer to set the addresses */ 110 void (*set_addr) (unsigned long, unsigned long, 111 unsigned long, unsigned long); 112 u32 height; 113 u32 width; 114 }; 115 116 struct channel_obj { 117 /* V4l2 specific parameters */ 118 struct video_device *video_dev; /* Identifies video device for 119 * this channel */ 120 struct v4l2_prio_state prio; /* Used to keep track of state of 121 * the priority */ 122 atomic_t usrs; /* number of open instances of 123 * the channel */ 124 u32 field_id; /* Indicates id of the field 125 * which is being displayed */ 126 u8 initialized; /* flag to indicate whether 127 * encoder is initialized */ 128 129 enum vpif_channel_id channel_id;/* Identifies channel */ 130 struct vpif_params vpifparams; 131 struct common_obj common[VPIF_NUMOBJECTS]; 132 struct video_obj video; 133 struct vbi_obj vbi; 134 }; 135 136 /* File handle structure */ 137 struct vpif_fh { 138 struct channel_obj *channel; /* pointer to channel object for 139 * opened device */ 140 u8 io_allowed[VPIF_NUMOBJECTS]; /* Indicates whether this file handle 141 * is doing IO */ 142 enum v4l2_priority prio; /* Used to keep track priority of 143 * this instance */ 144 u8 initialized; /* Used to keep track of whether this 145 * file handle has initialized 146 * channel or not */ 147 }; 148 149 /* vpif device structure */ 150 struct vpif_device { 151 struct v4l2_device v4l2_dev; 152 struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS]; 153 struct v4l2_subdev **sd; 154 155 }; 156 157 struct vpif_config_params { 158 u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; 159 u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; 160 u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS]; 161 u8 min_numbuffers; 162 }; 163 164 /* Struct which keeps track of the line numbers for the sliced vbi service */ 165 struct vpif_service_line { 166 u16 service_id; 167 u16 service_line[2]; 168 u16 enc_service_id; 169 u8 bytestowrite; 170 }; 171 172 #endif /* DAVINCIHD_DISPLAY_H */ 173