1 /***************************************************************************
2 * V4L2 driver for SN9C10x PC Camera Controllers *
4 * Copyright (C) 2004-2006 by Luca Risolia <luca.risolia@studio.unibo.it> *
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. *
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. *
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 ***************************************************************************/
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>
38 #include "sn9c102_sensor.h"
40 /*****************************************************************************/
43 #define SN9C102_DEBUG_LEVEL 2
44 #define SN9C102_MAX_DEVICES 64
45 #define SN9C102_PRESERVE_IMGSCALE 0
46 #define SN9C102_FORCE_MUNMAP 0
47 #define SN9C102_MAX_FRAMES 32
48 #define SN9C102_URBS 2
49 #define SN9C102_ISO_PACKETS 7
50 #define SN9C102_ALTERNATE_SETTING 8
51 #define SN9C102_URB_TIMEOUT msecs_to_jiffies(2 * SN9C102_ISO_PACKETS)
52 #define SN9C102_CTRL_TIMEOUT 300
54 /*****************************************************************************/
57 BRIDGE_SN9C101 = 0x01,
58 BRIDGE_SN9C102 = 0x02,
59 BRIDGE_SN9C103 = 0x04,
65 enum sn9c102_frame_state {
73 struct sn9c102_frame_t {
75 struct v4l2_buffer buf;
76 enum sn9c102_frame_state state;
77 struct list_head frame;
78 unsigned long vma_use_count;
81 enum sn9c102_dev_state {
82 DEV_INITIALIZED = 0x01,
83 DEV_DISCONNECTED = 0x02,
84 DEV_MISCONFIGURED = 0x04,
87 enum sn9c102_io_method {
93 enum sn9c102_stream_state {
99 typedef char sn9c103_sof_header_t[18];
100 typedef char sn9c102_sof_header_t[12];
101 typedef char sn9c102_eof_header_t[4];
103 struct sn9c102_sysfs_attr {
105 sn9c103_sof_header_t frame_header;
108 struct sn9c102_module_param {
112 static DECLARE_MUTEX(sn9c102_sysfs_lock);
113 static DECLARE_RWSEM(sn9c102_disconnect);
115 struct sn9c102_device {
116 struct video_device* v4ldev;
118 enum sn9c102_bridge bridge;
119 struct sn9c102_sensor* sensor;
121 struct usb_device* usbdev;
122 struct urb* urb[SN9C102_URBS];
123 void* transfer_buffer[SN9C102_URBS];
126 struct sn9c102_frame_t *frame_current, frame[SN9C102_MAX_FRAMES];
127 struct list_head inqueue, outqueue;
128 u32 frame_count, nbuffers, nreadbuffers;
130 enum sn9c102_io_method io;
131 enum sn9c102_stream_state stream;
133 struct v4l2_jpegcompression compression;
135 struct sn9c102_sysfs_attr sysfs;
136 sn9c103_sof_header_t sof_header;
139 struct sn9c102_module_param module_param;
141 enum sn9c102_dev_state state;
144 struct semaphore dev_sem, fileop_sem;
145 spinlock_t queue_lock;
146 wait_queue_head_t open, wait_frame, wait_stream;
149 /*****************************************************************************/
152 sn9c102_attach_sensor(struct sn9c102_device* cam,
153 struct sn9c102_sensor* sensor)
155 cam->sensor = sensor;
156 cam->sensor->usbdev = cam->usbdev;
159 /*****************************************************************************/
164 # define DBG(level, fmt, args...) \
166 if (debug >= (level)) { \
168 dev_err(&cam->usbdev->dev, fmt "\n", ## args); \
169 else if ((level) == 2) \
170 dev_info(&cam->usbdev->dev, fmt "\n", ## args); \
171 else if ((level) >= 3) \
172 dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
173 __FUNCTION__, __LINE__ , ## args); \
176 # define V4LDBG(level, name, cmd) \
178 if (debug >= (level)) \
179 v4l_print_ioctl(name, cmd); \
181 # define KDBG(level, fmt, args...) \
183 if (debug >= (level)) { \
184 if ((level) == 1 || (level) == 2) \
185 pr_info("sn9c102: " fmt "\n", ## args); \
186 else if ((level) == 3) \
187 pr_debug("sn9c102: [%s:%d] " fmt "\n", __FUNCTION__, \
188 __LINE__ , ## args); \
192 # define DBG(level, fmt, args...) do {;} while(0)
193 # define V4LDBG(level, name, cmd) do {;} while(0)
194 # define KDBG(level, fmt, args...) do {;} while(0)
198 #define PDBG(fmt, args...) \
199 dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
202 #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
204 #endif /* _SN9C102_H_ */