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/***************************************************************************
* V4L2 driver for ZC0301 Image Processor and Control Chip *
* *
* Copyright (C) 2006 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 _ZC0301_H_
#define _ZC0301_H_
#include <linux/version.h>
#include <linux/usb.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.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/mutex.h>
#include <linux/rwsem.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include "zc0301_sensor.h"
/*****************************************************************************/
#define ZC0301_DEBUG
#define ZC0301_DEBUG_LEVEL 2
#define ZC0301_MAX_DEVICES 64
#define ZC0301_FORCE_MUNMAP 0
#define ZC0301_MAX_FRAMES 32
#define ZC0301_COMPRESSION_QUALITY 0
#define ZC0301_URBS 2
#define ZC0301_ISO_PACKETS 7
#define ZC0301_ALTERNATE_SETTING 7
#define ZC0301_URB_TIMEOUT msecs_to_jiffies(2 * ZC0301_ISO_PACKETS)
#define ZC0301_CTRL_TIMEOUT 100
#define ZC0301_FRAME_TIMEOUT 2
/*****************************************************************************/
ZC0301_ID_TABLE
ZC0301_SENSOR_TABLE
enum zc0301_frame_state {
F_UNUSED,
F_QUEUED,
F_GRABBING,
F_DONE,
F_ERROR,
};
struct zc0301_frame_t {
void* bufmem;
struct v4l2_buffer buf;
enum zc0301_frame_state state;
struct list_head frame;
unsigned long vma_use_count;
};
enum zc0301_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
enum zc0301_io_method {
IO_NONE,
IO_READ,
IO_MMAP,
};
enum zc0301_stream_state {
STREAM_OFF,
STREAM_INTERRUPT,
STREAM_ON,
};
struct zc0301_module_param {
u8 force_munmap;
u16 frame_timeout;
};
static DECLARE_RWSEM(zc0301_disconnect);
struct zc0301_device {
struct video_device* v4ldev;
struct zc0301_sensor sensor;
struct usb_device* usbdev;
struct urb* urb[ZC0301_URBS];
void* transfer_buffer[ZC0301_URBS];
u8* control_buffer;
struct zc0301_frame_t *frame_current, frame[ZC0301_MAX_FRAMES];
struct list_head inqueue, outqueue;
u32 frame_count, nbuffers, nreadbuffers;
enum zc0301_io_method io;
enum zc0301_stream_state stream;
struct v4l2_jpegcompression compression;
struct zc0301_module_param module_param;
enum zc0301_dev_state state;
u8 users;
struct mutex dev_mutex, fileop_mutex;
spinlock_t queue_lock;
wait_queue_head_t open, wait_frame, wait_stream;
};
/*****************************************************************************/
struct zc0301_device*
zc0301_match_id(struct zc0301_device* cam, const struct usb_device_id *id)
{
if (usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id))
return cam;
return NULL;
}
void
zc0301_attach_sensor(struct zc0301_device* cam, struct zc0301_sensor* sensor)
{
memcpy(&cam->sensor, sensor, sizeof(struct zc0301_sensor));
}
/*****************************************************************************/
#undef DBG
#undef KDBG
#ifdef ZC0301_DEBUG
# define DBG(level, fmt, args...) \
do { \
if (debug >= (level)) { \
if ((level) == 1) \
dev_err(&cam->usbdev->dev, fmt "\n", ## args); \
else if ((level) == 2) \
dev_info(&cam->usbdev->dev, fmt "\n", ## args); \
else if ((level) >= 3) \
dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
__FUNCTION__, __LINE__ , ## args); \
} \
} while (0)
# define KDBG(level, fmt, args...) \
do { \
if (debug >= (level)) { \
if ((level) == 1 || (level) == 2) \
pr_info("zc0301: " fmt "\n", ## args); \
else if ((level) == 3) \
pr_debug("zc0301: [%s:%d] " fmt "\n", __FUNCTION__, \
__LINE__ , ## args); \
} \
} while (0)
# define V4LDBG(level, name, cmd) \
do { \
if (debug >= (level)) \
v4l_print_ioctl(name, cmd); \
} while (0)
#else
# define DBG(level, fmt, args...) do {;} while(0)
# define KDBG(level, fmt, args...) do {;} while(0)
# define V4LDBG(level, name, cmd) do {;} while(0)
#endif
#undef PDBG
#define PDBG(fmt, args...) \
dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
__FUNCTION__, __LINE__ , ## args)
#undef PDBGG
#define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
#endif /* _ZC0301_H_ */
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