1 /***************************************************************************
2 * V4L2 driver for ZC0301[P] Image Processor and Control Chip *
3 * *
4 * Copyright (C) 2006-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the Free Software *
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
19 ***************************************************************************/
20
21 #ifndef _ZC0301_H_
22 #define _ZC0301_H_
23
24 #include <linux/version.h>
25 #include <linux/usb.h>
26 #include <linux/videodev2.h>
27 #include <media/v4l2-common.h>
28 #include <media/v4l2-ioctl.h>
29 #include <linux/device.h>
30 #include <linux/list.h>
31 #include <linux/spinlock.h>
32 #include <linux/time.h>
33 #include <linux/wait.h>
34 #include <linux/types.h>
35 #include <linux/param.h>
36 #include <linux/mutex.h>
37 #include <linux/rwsem.h>
38 #include <linux/stddef.h>
39 #include <linux/string.h>
40 #include <linux/kref.h>
41
42 #include "zc0301_sensor.h"
43
44 /*****************************************************************************/
45
46 #define ZC0301_DEBUG
47 #define ZC0301_DEBUG_LEVEL 2
48 #define ZC0301_MAX_DEVICES 64
49 #define ZC0301_FORCE_MUNMAP 0
50 #define ZC0301_MAX_FRAMES 32
51 #define ZC0301_COMPRESSION_QUALITY 0
52 #define ZC0301_URBS 2
53 #define ZC0301_ISO_PACKETS 7
54 #define ZC0301_ALTERNATE_SETTING 7
55 #define ZC0301_URB_TIMEOUT msecs_to_jiffies(2 * ZC0301_ISO_PACKETS)
56 #define ZC0301_CTRL_TIMEOUT 100
57 #define ZC0301_FRAME_TIMEOUT 2
58
59 /*****************************************************************************/
60
61 ZC0301_ID_TABLE
62 ZC0301_SENSOR_TABLE
63
64 enum zc0301_frame_state {
65 F_UNUSED,
66 F_QUEUED,
67 F_GRABBING,
68 F_DONE,
69 F_ERROR,
70 };
71
72 struct zc0301_frame_t {
73 void* bufmem;
74 struct v4l2_buffer buf;
75 enum zc0301_frame_state state;
76 struct list_head frame;
77 unsigned long vma_use_count;
78 };
79
80 enum zc0301_dev_state {
81 DEV_INITIALIZED = 0x01,
82 DEV_DISCONNECTED = 0x02,
83 DEV_MISCONFIGURED = 0x04,
84 };
85
86 enum zc0301_io_method {
87 IO_NONE,
88 IO_READ,
89 IO_MMAP,
90 };
91
92 enum zc0301_stream_state {
93 STREAM_OFF,
94 STREAM_INTERRUPT,
95 STREAM_ON,
96 };
97
98 struct zc0301_module_param {
99 u8 force_munmap;
100 u16 frame_timeout;
101 };
102
103 static DECLARE_RWSEM(zc0301_dev_lock);
104
105 struct zc0301_device {
106 struct video_device* v4ldev;
107
108 struct zc0301_sensor sensor;
109
110 struct usb_device* usbdev;
111 struct urb* urb[ZC0301_URBS];
112 void* transfer_buffer[ZC0301_URBS];
113 u8* control_buffer;
114
115 struct zc0301_frame_t *frame_current, frame[ZC0301_MAX_FRAMES];
116 struct list_head inqueue, outqueue;
117 u32 frame_count, nbuffers, nreadbuffers;
118
119 enum zc0301_io_method io;
120 enum zc0301_stream_state stream;
121
122 struct v4l2_jpegcompression compression;
123
124 struct zc0301_module_param module_param;
125
126 struct kref kref;
127 enum zc0301_dev_state state;
128 u8 users;
129
130 struct completion probe;
131 struct mutex open_mutex, fileop_mutex;
132 spinlock_t queue_lock;
133 wait_queue_head_t wait_open, wait_frame, wait_stream;
134 };
135
136 /*****************************************************************************/
137
138 struct zc0301_device*
139 zc0301_match_id(struct zc0301_device* cam, const struct usb_device_id *id)
140 {
141 return usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id) ? cam : NULL;
142 }
143
144 void
145 zc0301_attach_sensor(struct zc0301_device* cam, struct zc0301_sensor* sensor)
146 {
147 memcpy(&cam->sensor, sensor, sizeof(struct zc0301_sensor));
148 }
149
150 /*****************************************************************************/
151
152 #undef DBG
153 #undef KDBG
154 #ifdef ZC0301_DEBUG
155 # define DBG(level, fmt, args...) \
156 do { \
157 if (debug >= (level)) { \
158 if ((level) == 1) \
159 dev_err(&cam->usbdev->dev, fmt "\n", ## args); \
160 else if ((level) == 2) \
161 dev_info(&cam->usbdev->dev, fmt "\n", ## args); \
162 else if ((level) >= 3) \
163 dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", \
164 __FILE__, __func__, __LINE__ , ## args); \
165 } \
166 } while (0)
167 # define KDBG(level, fmt, args...) \
168 do { \
169 if (debug >= (level)) { \
170 if ((level) == 1 || (level) == 2) \
171 pr_info("zc0301: " fmt "\n", ## args); \
172 else if ((level) == 3) \
173 pr_debug("sn9c102: [%s:%s:%d] " fmt "\n", __FILE__, \
174 __func__, __LINE__ , ## args); \
175 } \
176 } while (0)
177 # define V4LDBG(level, name, cmd) \
178 do { \
179 if (debug >= (level)) \
180 v4l_print_ioctl(name, cmd); \
181 } while (0)
182 #else
183 # define DBG(level, fmt, args...) do {;} while(0)
184 # define KDBG(level, fmt, args...) do {;} while(0)
185 # define V4LDBG(level, name, cmd) do {;} while(0)
186 #endif
187
188 #undef PDBG
189 #define PDBG(fmt, args...) \
190 dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", __FILE__, __func__, \
191 __LINE__ , ## args)
192
193 #undef PDBGG
194 #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
195
196 #endif /* _ZC0301_H_ */
197
|
This page was automatically generated by the
LXR engine.
|