1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
206 lines
6.5 KiB
C
206 lines
6.5 KiB
C
/***************************************************************************
|
|
* V4L2 driver for SN9C10x PC Camera Controllers *
|
|
* *
|
|
* Copyright (C) 2004-2005 by Luca Risolia <luca.risolia@studio.unibo.it> *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the Free Software *
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
|
|
***************************************************************************/
|
|
|
|
#ifndef _SN9C102_H_
|
|
#define _SN9C102_H_
|
|
|
|
#include <linux/version.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/videodev.h>
|
|
#include <linux/device.h>
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/time.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/types.h>
|
|
#include <linux/param.h>
|
|
#include <linux/rwsem.h>
|
|
#include <asm/semaphore.h>
|
|
|
|
#include "sn9c102_sensor.h"
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define SN9C102_DEBUG
|
|
#define SN9C102_DEBUG_LEVEL 2
|
|
#define SN9C102_MAX_DEVICES 64
|
|
#define SN9C102_PRESERVE_IMGSCALE 0
|
|
#define SN9C102_FORCE_MUNMAP 0
|
|
#define SN9C102_MAX_FRAMES 32
|
|
#define SN9C102_URBS 2
|
|
#define SN9C102_ISO_PACKETS 7
|
|
#define SN9C102_ALTERNATE_SETTING 8
|
|
#define SN9C102_URB_TIMEOUT msecs_to_jiffies(2 * SN9C102_ISO_PACKETS)
|
|
#define SN9C102_CTRL_TIMEOUT 300
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define SN9C102_MODULE_NAME "V4L2 driver for SN9C10x PC Camera Controllers"
|
|
#define SN9C102_MODULE_AUTHOR "(C) 2004-2005 Luca Risolia"
|
|
#define SN9C102_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>"
|
|
#define SN9C102_MODULE_LICENSE "GPL"
|
|
#define SN9C102_MODULE_VERSION "1:1.24"
|
|
#define SN9C102_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 24)
|
|
|
|
enum sn9c102_bridge {
|
|
BRIDGE_SN9C101 = 0x01,
|
|
BRIDGE_SN9C102 = 0x02,
|
|
BRIDGE_SN9C103 = 0x04,
|
|
};
|
|
|
|
SN9C102_ID_TABLE
|
|
SN9C102_SENSOR_TABLE
|
|
|
|
enum sn9c102_frame_state {
|
|
F_UNUSED,
|
|
F_QUEUED,
|
|
F_GRABBING,
|
|
F_DONE,
|
|
F_ERROR,
|
|
};
|
|
|
|
struct sn9c102_frame_t {
|
|
void* bufmem;
|
|
struct v4l2_buffer buf;
|
|
enum sn9c102_frame_state state;
|
|
struct list_head frame;
|
|
unsigned long vma_use_count;
|
|
};
|
|
|
|
enum sn9c102_dev_state {
|
|
DEV_INITIALIZED = 0x01,
|
|
DEV_DISCONNECTED = 0x02,
|
|
DEV_MISCONFIGURED = 0x04,
|
|
};
|
|
|
|
enum sn9c102_io_method {
|
|
IO_NONE,
|
|
IO_READ,
|
|
IO_MMAP,
|
|
};
|
|
|
|
enum sn9c102_stream_state {
|
|
STREAM_OFF,
|
|
STREAM_INTERRUPT,
|
|
STREAM_ON,
|
|
};
|
|
|
|
typedef char sn9c102_sof_header_t[12];
|
|
typedef char sn9c102_eof_header_t[4];
|
|
|
|
struct sn9c102_sysfs_attr {
|
|
u8 reg, i2c_reg;
|
|
sn9c102_sof_header_t frame_header;
|
|
};
|
|
|
|
struct sn9c102_module_param {
|
|
u8 force_munmap;
|
|
};
|
|
|
|
static DECLARE_MUTEX(sn9c102_sysfs_lock);
|
|
static DECLARE_RWSEM(sn9c102_disconnect);
|
|
|
|
struct sn9c102_device {
|
|
struct device dev;
|
|
|
|
struct video_device* v4ldev;
|
|
|
|
enum sn9c102_bridge bridge;
|
|
struct sn9c102_sensor* sensor;
|
|
|
|
struct usb_device* usbdev;
|
|
struct urb* urb[SN9C102_URBS];
|
|
void* transfer_buffer[SN9C102_URBS];
|
|
u8* control_buffer;
|
|
|
|
struct sn9c102_frame_t *frame_current, frame[SN9C102_MAX_FRAMES];
|
|
struct list_head inqueue, outqueue;
|
|
u32 frame_count, nbuffers, nreadbuffers;
|
|
|
|
enum sn9c102_io_method io;
|
|
enum sn9c102_stream_state stream;
|
|
|
|
struct v4l2_jpegcompression compression;
|
|
|
|
struct sn9c102_sysfs_attr sysfs;
|
|
sn9c102_sof_header_t sof_header;
|
|
u16 reg[32];
|
|
|
|
struct sn9c102_module_param module_param;
|
|
|
|
enum sn9c102_dev_state state;
|
|
u8 users;
|
|
|
|
struct semaphore dev_sem, fileop_sem;
|
|
spinlock_t queue_lock;
|
|
wait_queue_head_t open, wait_frame, wait_stream;
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
|
|
void
|
|
sn9c102_attach_sensor(struct sn9c102_device* cam,
|
|
struct sn9c102_sensor* sensor)
|
|
{
|
|
cam->sensor = sensor;
|
|
cam->sensor->dev = &cam->dev;
|
|
cam->sensor->usbdev = cam->usbdev;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#undef DBG
|
|
#undef KDBG
|
|
#ifdef SN9C102_DEBUG
|
|
# define DBG(level, fmt, args...) \
|
|
{ \
|
|
if (debug >= (level)) { \
|
|
if ((level) == 1) \
|
|
dev_err(&cam->dev, fmt "\n", ## args); \
|
|
else if ((level) == 2) \
|
|
dev_info(&cam->dev, fmt "\n", ## args); \
|
|
else if ((level) >= 3) \
|
|
dev_info(&cam->dev, "[%s:%d] " fmt "\n", \
|
|
__FUNCTION__, __LINE__ , ## args); \
|
|
} \
|
|
}
|
|
# define KDBG(level, fmt, args...) \
|
|
{ \
|
|
if (debug >= (level)) { \
|
|
if ((level) == 1 || (level) == 2) \
|
|
pr_info("sn9c102: " fmt "\n", ## args); \
|
|
else if ((level) == 3) \
|
|
pr_debug("sn9c102: [%s:%d] " fmt "\n", __FUNCTION__, \
|
|
__LINE__ , ## args); \
|
|
} \
|
|
}
|
|
#else
|
|
# define KDBG(level, fmt, args...) do {;} while(0);
|
|
# define DBG(level, fmt, args...) do {;} while(0);
|
|
#endif
|
|
|
|
#undef PDBG
|
|
#define PDBG(fmt, args...) \
|
|
dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args);
|
|
|
|
#undef PDBGG
|
|
#define PDBGG(fmt, args...) do {;} while(0); /* placeholder */
|
|
|
|
#endif /* _SN9C102_H_ */
|