3 Copyright 1996,2002,2005 Gregory D. Hager, Alfred A. Rizzi, Noah J. Cowan,
4 Jason Lapenta, Scott Smedley
6 This file is part of the DT3155 Device Driver.
8 The DT3155 Device Driver is free software; you can redistribute it
9 and/or modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2 of the
11 License, or (at your option) any later version.
13 The DT3155 Device Driver is distributed in the hope that it will be
14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with the DT3155 Device Driver; if not, write to the Free
20 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 Date Programmer Description of changes made
26 -------------------------------------------------------------------
28 10-Oct-2001 SS port to 2.4 kernel.
29 24-Jul-2002 SS remove unused code & added GPL licence.
30 05-Aug-2005 SS port to 2.6 kernel; make CCIR mode default.
38 #include <linux/types.h>
39 #include <linux/time.h> /* struct timeval */
41 #include <sys/ioctl.h>
42 #include <sys/param.h>
51 /* Uncomment this for 50Hz CCIR */
57 #define BOARD_MAX_BUFFS 3
58 #define MAXBUFFERS (BOARD_MAX_BUFFS*MAXBOARDS)
60 #define PCI_PAGE_SIZE (1 << 12)
63 #define DT3155_MAX_ROWS 576
64 #define DT3155_MAX_COLS 768
65 #define FORMAT50HZ TRUE
67 #define DT3155_MAX_ROWS 480
68 #define DT3155_MAX_COLS 640
69 #define FORMAT50HZ FALSE
72 /* Configuration structure */
73 struct dt3155_config_s
{
80 /* hold data for each frame */
82 u32 addr
; /* address of the buffer with the frame */
83 u32 tag
; /* unique number for the frame */
84 struct timeval time
; /* time that capture took place */
88 * Structure for interrupt and buffer handling.
89 * This is the setup for 1 card
91 struct dt3155_fbuffer_s
{
94 frame_info_t frame_info
[BOARD_MAX_BUFFS
];
96 int empty_buffers
[BOARD_MAX_BUFFS
]; /* indexes empty frames */
97 int empty_len
; /* Number of empty buffers */
98 /* Zero means empty */
100 int active_buf
; /* Where data is currently dma'ing */
101 int locked_buf
; /* Buffers used by user */
103 int ready_que
[BOARD_MAX_BUFFS
];
104 u32 ready_head
; /* The most recent buffer located here */
105 u32 ready_len
; /* The number of ready buffers */
110 int stop_acquire
; /* Flag to stop interrupts */
111 u32 frame_count
; /* Counter for frames acquired by this card */
116 #define DT3155_MODE_FRAME 1
117 #define DT3155_MODE_FIELD 2
119 #define DT3155_SNAP 1
122 /* There is one status structure for each card. */
123 typedef struct dt3155_status_s
{
124 int fixed_mode
; /* if 1, we are in fixed frame mode */
125 u32 reg_addr
; /* Register address for a single card */
126 u32 mem_addr
; /* Buffer start addr for this card */
127 u32 mem_size
; /* This is the amount of mem available */
128 u32 irq
; /* this card's irq */
129 struct dt3155_config_s config
; /* configuration struct */
130 struct dt3155_fbuffer_s fbuffer
; /* frame buffer state struct */
131 u32 state
; /* this card's state */
132 u32 device_installed
; /* Flag if installed. 1=installed */
135 /* Reference to global status structure */
136 extern struct dt3155_status_s dt3155_status
[MAXBOARDS
];
138 #define DT3155_STATE_IDLE 0x00
139 #define DT3155_STATE_FRAME 0x01
140 #define DT3155_STATE_FLD 0x02
141 #define DT3155_STATE_STOP 0x100
142 #define DT3155_STATE_ERROR 0x200
143 #define DT3155_STATE_MODE 0x0ff
145 #define DT3155_IOC_MAGIC '!'
147 #define DT3155_SET_CONFIG _IOW(DT3155_IOC_MAGIC, 1, struct dt3155_config_s)
148 #define DT3155_GET_CONFIG _IOR(DT3155_IOC_MAGIC, 2, struct dt3155_status_s)
149 #define DT3155_STOP _IO(DT3155_IOC_MAGIC, 3)
150 #define DT3155_START _IO(DT3155_IOC_MAGIC, 4)
151 #define DT3155_FLUSH _IO(DT3155_IOC_MAGIC, 5)
152 #define DT3155_IOC_MAXNR 5
156 #define DT_ERR_NO_BUFFERS 0x10000 /* not used but it might be one day */
157 #define DT_ERR_CORRUPT 0x20000
158 #define DT_ERR_OVERRUN 0x30000
159 #define DT_ERR_I2C_TIMEOUT 0x40000
160 #define DT_ERR_MASK 0xff0000/* not used but it might be one day */
162 /* User code will probably want to declare one of these for each card */
163 typedef struct dt3155_read_s
{
168 frame_info_t frame_info
;
171 #endif /* _DT3155_inc */