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/***************************************************************************
* 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 0213 9 , 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"
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# define SN9C102_MODULE_VERSION "1:1.24a"
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# 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_ */
