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1 | /*************************************************************************** |
2 | * V4L2 driver for SN9C10x PC Camera Controllers * | |
3 | * * | |
4 | * Copyright (C) 2004-2005 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 _SN9C102_H_ | |
22 | #define _SN9C102_H_ | |
23 | ||
24 | #include <linux/version.h> | |
25 | #include <linux/usb.h> | |
26 | #include <linux/videodev.h> | |
27 | #include <linux/device.h> | |
28 | #include <linux/list.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/time.h> | |
31 | #include <linux/wait.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/param.h> | |
34 | #include <linux/rwsem.h> | |
35 | #include <asm/semaphore.h> | |
36 | ||
37 | #include "sn9c102_sensor.h" | |
38 | ||
39 | /*****************************************************************************/ | |
40 | ||
41 | #define SN9C102_DEBUG | |
42 | #define SN9C102_DEBUG_LEVEL 2 | |
43 | #define SN9C102_MAX_DEVICES 64 | |
44 | #define SN9C102_PRESERVE_IMGSCALE 0 | |
45 | #define SN9C102_FORCE_MUNMAP 0 | |
46 | #define SN9C102_MAX_FRAMES 32 | |
47 | #define SN9C102_URBS 2 | |
48 | #define SN9C102_ISO_PACKETS 7 | |
49 | #define SN9C102_ALTERNATE_SETTING 8 | |
50 | #define SN9C102_URB_TIMEOUT msecs_to_jiffies(2 * SN9C102_ISO_PACKETS) | |
51 | #define SN9C102_CTRL_TIMEOUT 300 | |
52 | ||
53 | /*****************************************************************************/ | |
54 | ||
55 | #define SN9C102_MODULE_NAME "V4L2 driver for SN9C10x PC Camera Controllers" | |
56 | #define SN9C102_MODULE_AUTHOR "(C) 2004-2005 Luca Risolia" | |
57 | #define SN9C102_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" | |
58 | #define SN9C102_MODULE_LICENSE "GPL" | |
59 | #define SN9C102_MODULE_VERSION "1:1.24" | |
60 | #define SN9C102_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 24) | |
61 | ||
62 | enum sn9c102_bridge { | |
63 | BRIDGE_SN9C101 = 0x01, | |
64 | BRIDGE_SN9C102 = 0x02, | |
65 | BRIDGE_SN9C103 = 0x04, | |
66 | }; | |
67 | ||
68 | SN9C102_ID_TABLE | |
69 | SN9C102_SENSOR_TABLE | |
70 | ||
71 | enum sn9c102_frame_state { | |
72 | F_UNUSED, | |
73 | F_QUEUED, | |
74 | F_GRABBING, | |
75 | F_DONE, | |
76 | F_ERROR, | |
77 | }; | |
78 | ||
79 | struct sn9c102_frame_t { | |
80 | void* bufmem; | |
81 | struct v4l2_buffer buf; | |
82 | enum sn9c102_frame_state state; | |
83 | struct list_head frame; | |
84 | unsigned long vma_use_count; | |
85 | }; | |
86 | ||
87 | enum sn9c102_dev_state { | |
88 | DEV_INITIALIZED = 0x01, | |
89 | DEV_DISCONNECTED = 0x02, | |
90 | DEV_MISCONFIGURED = 0x04, | |
91 | }; | |
92 | ||
93 | enum sn9c102_io_method { | |
94 | IO_NONE, | |
95 | IO_READ, | |
96 | IO_MMAP, | |
97 | }; | |
98 | ||
99 | enum sn9c102_stream_state { | |
100 | STREAM_OFF, | |
101 | STREAM_INTERRUPT, | |
102 | STREAM_ON, | |
103 | }; | |
104 | ||
105 | typedef char sn9c102_sof_header_t[12]; | |
106 | typedef char sn9c102_eof_header_t[4]; | |
107 | ||
108 | struct sn9c102_sysfs_attr { | |
109 | u8 reg, i2c_reg; | |
110 | sn9c102_sof_header_t frame_header; | |
111 | }; | |
112 | ||
113 | struct sn9c102_module_param { | |
114 | u8 force_munmap; | |
115 | }; | |
116 | ||
117 | static DECLARE_MUTEX(sn9c102_sysfs_lock); | |
118 | static DECLARE_RWSEM(sn9c102_disconnect); | |
119 | ||
120 | struct sn9c102_device { | |
121 | struct device dev; | |
122 | ||
123 | struct video_device* v4ldev; | |
124 | ||
125 | enum sn9c102_bridge bridge; | |
126 | struct sn9c102_sensor* sensor; | |
127 | ||
128 | struct usb_device* usbdev; | |
129 | struct urb* urb[SN9C102_URBS]; | |
130 | void* transfer_buffer[SN9C102_URBS]; | |
131 | u8* control_buffer; | |
132 | ||
133 | struct sn9c102_frame_t *frame_current, frame[SN9C102_MAX_FRAMES]; | |
134 | struct list_head inqueue, outqueue; | |
135 | u32 frame_count, nbuffers, nreadbuffers; | |
136 | ||
137 | enum sn9c102_io_method io; | |
138 | enum sn9c102_stream_state stream; | |
139 | ||
140 | struct v4l2_jpegcompression compression; | |
141 | ||
142 | struct sn9c102_sysfs_attr sysfs; | |
143 | sn9c102_sof_header_t sof_header; | |
144 | u16 reg[32]; | |
145 | ||
146 | struct sn9c102_module_param module_param; | |
147 | ||
148 | enum sn9c102_dev_state state; | |
149 | u8 users; | |
150 | ||
151 | struct semaphore dev_sem, fileop_sem; | |
152 | spinlock_t queue_lock; | |
153 | wait_queue_head_t open, wait_frame, wait_stream; | |
154 | }; | |
155 | ||
156 | /*****************************************************************************/ | |
157 | ||
158 | void | |
159 | sn9c102_attach_sensor(struct sn9c102_device* cam, | |
160 | struct sn9c102_sensor* sensor) | |
161 | { | |
162 | cam->sensor = sensor; | |
163 | cam->sensor->dev = &cam->dev; | |
164 | cam->sensor->usbdev = cam->usbdev; | |
165 | } | |
166 | ||
167 | /*****************************************************************************/ | |
168 | ||
169 | #undef DBG | |
170 | #undef KDBG | |
171 | #ifdef SN9C102_DEBUG | |
172 | # define DBG(level, fmt, args...) \ | |
173 | { \ | |
174 | if (debug >= (level)) { \ | |
175 | if ((level) == 1) \ | |
176 | dev_err(&cam->dev, fmt "\n", ## args); \ | |
177 | else if ((level) == 2) \ | |
178 | dev_info(&cam->dev, fmt "\n", ## args); \ | |
179 | else if ((level) >= 3) \ | |
180 | dev_info(&cam->dev, "[%s:%d] " fmt "\n", \ | |
181 | __FUNCTION__, __LINE__ , ## args); \ | |
182 | } \ | |
183 | } | |
184 | # define KDBG(level, fmt, args...) \ | |
185 | { \ | |
186 | if (debug >= (level)) { \ | |
187 | if ((level) == 1 || (level) == 2) \ | |
188 | pr_info("sn9c102: " fmt "\n", ## args); \ | |
189 | else if ((level) == 3) \ | |
190 | pr_debug("sn9c102: [%s:%d] " fmt "\n", __FUNCTION__, \ | |
191 | __LINE__ , ## args); \ | |
192 | } \ | |
193 | } | |
194 | #else | |
195 | # define KDBG(level, fmt, args...) do {;} while(0); | |
196 | # define DBG(level, fmt, args...) do {;} while(0); | |
197 | #endif | |
198 | ||
199 | #undef PDBG | |
200 | #define PDBG(fmt, args...) \ | |
201 | dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args); | |
202 | ||
203 | #undef PDBGG | |
204 | #define PDBGG(fmt, args...) do {;} while(0); /* placeholder */ | |
205 | ||
206 | #endif /* _SN9C102_H_ */ |