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review.evervolv.com / android_kernel_oneplus_sm8150 / 3487d1d4414fbfab5d98ec559e6f84f55520cb15 / . / drivers / usb / media / et61x251.h
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Luca Risolia7ce08c92006-01-11 02:06:59 +0000[diff] [blame]1/***************************************************************************
2 * V4L2 driver for ET61X[12]51 PC Camera Controllers *
3 * *
4 * Copyright (C) 2006 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 _ET61X251_H_
22#define _ET61X251_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 <linux/device.h>
29#include <linux/list.h>
30#include <linux/spinlock.h>
31#include <linux/time.h>
32#include <linux/wait.h>
33#include <linux/types.h>
34#include <linux/param.h>
35#include <linux/rwsem.h>
36#include <asm/semaphore.h>
37
38#include "et61x251_sensor.h"
39
40/*****************************************************************************/
41
42#define ET61X251_DEBUG
43#define ET61X251_DEBUG_LEVEL 2
44#define ET61X251_MAX_DEVICES 64
45#define ET61X251_PRESERVE_IMGSCALE 0
46#define ET61X251_FORCE_MUNMAP 0
47#define ET61X251_MAX_FRAMES 32
48#define ET61X251_COMPRESSION_QUALITY 0
49#define ET61X251_URBS 2
50#define ET61X251_ISO_PACKETS 7
51#define ET61X251_ALTERNATE_SETTING 13
52#define ET61X251_URB_TIMEOUT msecs_to_jiffies(2 * ET61X251_ISO_PACKETS)
53#define ET61X251_CTRL_TIMEOUT 100
54
55/*****************************************************************************/
56
57static const struct usb_device_id et61x251_id_table[] = {
58 { USB_DEVICE(0x102c, 0x6151), },
59 { USB_DEVICE(0x102c, 0x6251), },
60 { USB_DEVICE(0x102c, 0x6253), },
61 { USB_DEVICE(0x102c, 0x6254), },
62 { USB_DEVICE(0x102c, 0x6255), },
63 { USB_DEVICE(0x102c, 0x6256), },
64 { USB_DEVICE(0x102c, 0x6257), },
65 { USB_DEVICE(0x102c, 0x6258), },
66 { USB_DEVICE(0x102c, 0x6259), },
67 { USB_DEVICE(0x102c, 0x625a), },
68 { USB_DEVICE(0x102c, 0x625b), },
69 { USB_DEVICE(0x102c, 0x625c), },
70 { USB_DEVICE(0x102c, 0x625d), },
71 { USB_DEVICE(0x102c, 0x625e), },
72 { USB_DEVICE(0x102c, 0x625f), },
73 { USB_DEVICE(0x102c, 0x6260), },
74 { USB_DEVICE(0x102c, 0x6261), },
75 { USB_DEVICE(0x102c, 0x6262), },
76 { USB_DEVICE(0x102c, 0x6263), },
77 { USB_DEVICE(0x102c, 0x6264), },
78 { USB_DEVICE(0x102c, 0x6265), },
79 { USB_DEVICE(0x102c, 0x6266), },
80 { USB_DEVICE(0x102c, 0x6267), },
81 { USB_DEVICE(0x102c, 0x6268), },
82 { USB_DEVICE(0x102c, 0x6269), },
83 { }
84};
85
86ET61X251_SENSOR_TABLE
87
88/*****************************************************************************/
89
90enum et61x251_frame_state {
91 F_UNUSED,
92 F_QUEUED,
93 F_GRABBING,
94 F_DONE,
95 F_ERROR,
96};
97
98struct et61x251_frame_t {
99 void* bufmem;
100 struct v4l2_buffer buf;
101 enum et61x251_frame_state state;
102 struct list_head frame;
103 unsigned long vma_use_count;
104};
105
106enum et61x251_dev_state {
107 DEV_INITIALIZED = 0x01,
108 DEV_DISCONNECTED = 0x02,
109 DEV_MISCONFIGURED = 0x04,
110};
111
112enum et61x251_io_method {
113 IO_NONE,
114 IO_READ,
115 IO_MMAP,
116};
117
118enum et61x251_stream_state {
119 STREAM_OFF,
120 STREAM_INTERRUPT,
121 STREAM_ON,
122};
123
124struct et61x251_sysfs_attr {
125 u8 reg, i2c_reg;
126};
127
128struct et61x251_module_param {
129 u8 force_munmap;
130};
131
132static DECLARE_MUTEX(et61x251_sysfs_lock);
133static DECLARE_RWSEM(et61x251_disconnect);
134
135struct et61x251_device {
136 struct video_device* v4ldev;
137
138 struct et61x251_sensor* sensor;
139
140 struct usb_device* usbdev;
141 struct urb* urb[ET61X251_URBS];
142 void* transfer_buffer[ET61X251_URBS];
143 u8* control_buffer;
144
145 struct et61x251_frame_t *frame_current, frame[ET61X251_MAX_FRAMES];
146 struct list_head inqueue, outqueue;
147 u32 frame_count, nbuffers, nreadbuffers;
148
149 enum et61x251_io_method io;
150 enum et61x251_stream_state stream;
151
152 struct v4l2_jpegcompression compression;
153
154 struct et61x251_sysfs_attr sysfs;
155 struct et61x251_module_param module_param;
156
157 enum et61x251_dev_state state;
158 u8 users;
159
160 struct semaphore dev_sem, fileop_sem;
161 spinlock_t queue_lock;
162 wait_queue_head_t open, wait_frame, wait_stream;
163};
164
165/*****************************************************************************/
166
167void
168et61x251_attach_sensor(struct et61x251_device* cam,
169 struct et61x251_sensor* sensor)
170{
171 cam->sensor = sensor;
172 cam->sensor->usbdev = cam->usbdev;
173}
174
175/*****************************************************************************/
176
177#undef DBG
178#undef KDBG
179#ifdef ET61X251_DEBUG
180# define DBG(level, fmt, args...) \
181do { \
182 if (debug >= (level)) { \
183 if ((level) == 1) \
184 dev_err(&cam->usbdev->dev, fmt "\n", ## args); \
185 else if ((level) == 2) \
186 dev_info(&cam->usbdev->dev, fmt "\n", ## args); \
187 else if ((level) >= 3) \
188 dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
189 __FUNCTION__, __LINE__ , ## args); \
190 } \
191} while (0)
192# define KDBG(level, fmt, args...) \
193do { \
194 if (debug >= (level)) { \
195 if ((level) == 1 || (level) == 2) \
196 pr_info("et61x251: " fmt "\n", ## args); \
197 else if ((level) == 3) \
198 pr_debug("et61x251: [%s:%d] " fmt "\n", __FUNCTION__, \
199 __LINE__ , ## args); \
200 } \
201} while (0)
202# define V4LDBG(level, name, cmd) \
203do { \
204 if (debug >= (level)) \
205 v4l_print_ioctl(name, cmd); \
206} while (0)
207#else
208# define DBG(level, fmt, args...) do {;} while(0)
209# define KDBG(level, fmt, args...) do {;} while(0)
210# define V4LDBG(level, name, cmd) do {;} while(0)
211#endif
212
213#undef PDBG
214#define PDBG(fmt, args...) \
215dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
216
217#undef PDBGG
218#define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
219
220#endif /* _ET61X251_H_ */