| /*************************************************************************** |
| * Video4Linux driver for W996[87]CF JPEG USB Dual Mode Camera Chip. * |
| * * |
| * Copyright (C) 2002-2004 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 _W9968CF_H_ |
| #define _W9968CF_H_ |
| |
| #include <linux/videodev.h> |
| #include <linux/usb.h> |
| #include <linux/i2c.h> |
| #include <linux/device.h> |
| #include <linux/spinlock.h> |
| #include <linux/list.h> |
| #include <linux/wait.h> |
| #include <linux/config.h> |
| #include <linux/param.h> |
| #include <linux/types.h> |
| #include <linux/rwsem.h> |
| #include <asm/semaphore.h> |
| |
| #include <media/ovcamchip.h> |
| |
| #include "w9968cf_vpp.h" |
| |
| |
| /**************************************************************************** |
| * Default values * |
| ****************************************************************************/ |
| |
| #define W9968CF_OVMOD_LOAD 1 /* automatic 'ovcamchip' module loading */ |
| #define W9968CF_VPPMOD_LOAD 1 /* automatic 'w9968cf-vpp' module loading */ |
| |
| /* Comment/uncomment the following line to enable/disable debugging messages */ |
| #define W9968CF_DEBUG |
| |
| /* These have effect only if W9968CF_DEBUG is defined */ |
| #define W9968CF_DEBUG_LEVEL 2 /* from 0 to 6. 0 for no debug informations */ |
| #define W9968CF_SPECIFIC_DEBUG 0 /* 0 or 1 */ |
| |
| #define W9968CF_MAX_DEVICES 32 |
| #define W9968CF_SIMCAMS W9968CF_MAX_DEVICES /* simultaneous cameras */ |
| |
| #define W9968CF_MAX_BUFFERS 32 |
| #define W9968CF_BUFFERS 2 /* n. of frame buffers from 2 to MAX_BUFFERS */ |
| |
| /* Maximum data payload sizes in bytes for alternate settings */ |
| static const u16 wMaxPacketSize[] = {1023, 959, 895, 831, 767, 703, 639, 575, |
| 511, 447, 383, 319, 255, 191, 127, 63}; |
| #define W9968CF_PACKET_SIZE 1023 /* according to wMaxPacketSizes[] */ |
| #define W9968CF_MIN_PACKET_SIZE 63 /* minimum value */ |
| #define W9968CF_ISO_PACKETS 5 /* n.of packets for isochronous transfers */ |
| #define W9968CF_USB_CTRL_TIMEOUT 1000 /* timeout (ms) for usb control commands */ |
| #define W9968CF_URBS 2 /* n. of scheduled URBs for ISO transfer */ |
| |
| #define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */ |
| #define W9968CF_I2C_RW_RETRIES 15 /* number of max I2C r/w retries */ |
| |
| /* Available video formats */ |
| struct w9968cf_format { |
| const u16 palette; |
| const u16 depth; |
| const u8 compression; |
| }; |
| |
| static const struct w9968cf_format w9968cf_formatlist[] = { |
| { VIDEO_PALETTE_UYVY, 16, 0 }, /* original video */ |
| { VIDEO_PALETTE_YUV422P, 16, 1 }, /* with JPEG compression */ |
| { VIDEO_PALETTE_YUV420P, 12, 1 }, /* with JPEG compression */ |
| { VIDEO_PALETTE_YUV420, 12, 1 }, /* same as YUV420P */ |
| { VIDEO_PALETTE_YUYV, 16, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_YUV422, 16, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_GREY, 8, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_RGB555, 16, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_RGB565, 16, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_RGB24, 24, 0 }, /* software conversion */ |
| { VIDEO_PALETTE_RGB32, 32, 0 }, /* software conversion */ |
| { 0, 0, 0 } /* 0 is a terminating entry */ |
| }; |
| |
| #define W9968CF_DECOMPRESSION 2 /* decomp:0=disable,1=force,2=any formats */ |
| #define W9968CF_PALETTE_DECOMP_OFF VIDEO_PALETTE_UYVY /* when decomp=0 */ |
| #define W9968CF_PALETTE_DECOMP_FORCE VIDEO_PALETTE_YUV420P /* when decomp=1 */ |
| #define W9968CF_PALETTE_DECOMP_ON VIDEO_PALETTE_UYVY /* when decomp=2 */ |
| |
| #define W9968CF_FORCE_RGB 0 /* read RGB instead of BGR, yes=1/no=0 */ |
| |
| #define W9968CF_MAX_WIDTH 800 /* Has effect if up-scaling is on */ |
| #define W9968CF_MAX_HEIGHT 600 /* Has effect if up-scaling is on */ |
| #define W9968CF_WIDTH 320 /* from 128 to 352, multiple of 16 */ |
| #define W9968CF_HEIGHT 240 /* from 96 to 288, multiple of 16 */ |
| |
| #define W9968CF_CLAMPING 0 /* 0 disable, 1 enable video data clamping */ |
| #define W9968CF_FILTER_TYPE 0 /* 0 disable 1 (1-2-1), 2 (2-3-6-3-2) */ |
| #define W9968CF_DOUBLE_BUFFER 1 /* 0 disable, 1 enable double buffer */ |
| #define W9968CF_LARGEVIEW 1 /* 0 disable, 1 enable */ |
| #define W9968CF_UPSCALING 0 /* 0 disable, 1 enable */ |
| |
| #define W9968CF_MONOCHROME 0 /* 0 not monochrome, 1 monochrome sensor */ |
| #define W9968CF_BRIGHTNESS 31000 /* from 0 to 65535 */ |
| #define W9968CF_HUE 32768 /* from 0 to 65535 */ |
| #define W9968CF_COLOUR 32768 /* from 0 to 65535 */ |
| #define W9968CF_CONTRAST 50000 /* from 0 to 65535 */ |
| #define W9968CF_WHITENESS 32768 /* from 0 to 65535 */ |
| |
| #define W9968CF_AUTOBRIGHT 0 /* 0 disable, 1 enable automatic brightness */ |
| #define W9968CF_AUTOEXP 1 /* 0 disable, 1 enable automatic exposure */ |
| #define W9968CF_LIGHTFREQ 50 /* light frequency. 50Hz (Europe) or 60Hz */ |
| #define W9968CF_BANDINGFILTER 0 /* 0 disable, 1 enable banding filter */ |
| #define W9968CF_BACKLIGHT 0 /* 0 or 1, 1=object is lit from behind */ |
| #define W9968CF_MIRROR 0 /* 0 or 1 [don't] reverse image horizontally*/ |
| |
| #define W9968CF_CLOCKDIV -1 /* -1 = automatic clock divisor */ |
| #define W9968CF_DEF_CLOCKDIVISOR 0 /* default sensor clock divisor value */ |
| |
| |
| /**************************************************************************** |
| * Globals * |
| ****************************************************************************/ |
| |
| #define W9968CF_MODULE_NAME "V4L driver for W996[87]CF JPEG USB " \ |
| "Dual Mode Camera Chip" |
| #define W9968CF_MODULE_VERSION "1:1.33-basic" |
| #define W9968CF_MODULE_AUTHOR "(C) 2002-2004 Luca Risolia" |
| #define W9968CF_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
| #define W9968CF_MODULE_LICENSE "GPL" |
| |
| static const struct usb_device_id winbond_id_table[] = { |
| { |
| /* Creative Labs Video Blaster WebCam Go Plus */ |
| USB_DEVICE(0x041e, 0x4003), |
| .driver_info = (unsigned long)"w9968cf", |
| }, |
| { |
| /* Generic W996[87]CF JPEG USB Dual Mode Camera */ |
| USB_DEVICE(0x1046, 0x9967), |
| .driver_info = (unsigned long)"w9968cf", |
| }, |
| { } /* terminating entry */ |
| }; |
| |
| /* W996[87]CF camera models, internal ids: */ |
| enum w9968cf_model_id { |
| W9968CF_MOD_GENERIC = 1, /* Generic W996[87]CF based device */ |
| W9968CF_MOD_CLVBWGP = 11,/*Creative Labs Video Blaster WebCam Go Plus*/ |
| W9968CF_MOD_ADPVDMA = 21, /* Aroma Digi Pen VGA Dual Mode ADG-5000 */ |
| W9986CF_MOD_AAU = 31, /* AVerMedia AVerTV USB */ |
| W9968CF_MOD_CLVBWG = 34, /* Creative Labs Video Blaster WebCam Go */ |
| W9968CF_MOD_LL = 37, /* Lebon LDC-035A */ |
| W9968CF_MOD_EEEMC = 40, /* Ezonics EZ-802 EZMega Cam */ |
| W9968CF_MOD_OOE = 42, /* OmniVision OV8610-EDE */ |
| W9968CF_MOD_ODPVDMPC = 43,/* OPCOM Digi Pen VGA Dual Mode Pen Camera */ |
| W9968CF_MOD_PDPII = 46, /* Pretec Digi Pen-II */ |
| W9968CF_MOD_PDP480 = 49, /* Pretec DigiPen-480 */ |
| }; |
| |
| enum w9968cf_frame_status { |
| F_READY, /* finished grabbing & ready to be read/synced */ |
| F_GRABBING, /* in the process of being grabbed into */ |
| F_ERROR, /* something bad happened while processing */ |
| F_UNUSED /* unused (no VIDIOCMCAPTURE) */ |
| }; |
| |
| struct w9968cf_frame_t { |
| void* buffer; |
| unsigned long size; |
| u32 length; |
| int number; |
| enum w9968cf_frame_status status; |
| struct w9968cf_frame_t* next; |
| u8 queued; |
| }; |
| |
| enum w9968cf_vpp_flag { |
| VPP_NONE = 0x00, |
| VPP_UPSCALE = 0x01, |
| VPP_SWAP_YUV_BYTES = 0x02, |
| VPP_DECOMPRESSION = 0x04, |
| VPP_UYVY_TO_RGBX = 0x08, |
| }; |
| |
| static struct w9968cf_vpp_t* w9968cf_vpp; |
| static DECLARE_MUTEX(w9968cf_vppmod_lock); |
| static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait); |
| |
| static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */ |
| static DECLARE_MUTEX(w9968cf_devlist_sem); /* semaphore for list traversal */ |
| |
| static DECLARE_RWSEM(w9968cf_disconnect); /* prevent races with open() */ |
| |
| /* Main device driver structure */ |
| struct w9968cf_device { |
| struct device dev; /* device structure */ |
| |
| enum w9968cf_model_id id; /* private device identifier */ |
| |
| struct video_device* v4ldev; /* -> V4L structure */ |
| struct list_head v4llist; /* entry of the list of V4L cameras */ |
| |
| struct usb_device* usbdev; /* -> main USB structure */ |
| struct urb* urb[W9968CF_URBS]; /* -> USB request block structs */ |
| void* transfer_buffer[W9968CF_URBS]; /* -> ISO transfer buffers */ |
| u16* control_buffer; /* -> buffer for control req.*/ |
| u16* data_buffer; /* -> data to send to the FSB */ |
| |
| struct w9968cf_frame_t frame[W9968CF_MAX_BUFFERS]; |
| struct w9968cf_frame_t frame_tmp; /* temporary frame */ |
| struct w9968cf_frame_t frame_vpp; /* helper frame.*/ |
| struct w9968cf_frame_t* frame_current; /* -> frame being grabbed */ |
| struct w9968cf_frame_t* requested_frame[W9968CF_MAX_BUFFERS]; |
| |
| u8 max_buffers, /* number of requested buffers */ |
| force_palette, /* yes=1/no=0 */ |
| force_rgb, /* read RGB instead of BGR, yes=1, no=0 */ |
| double_buffer, /* hardware double buffering yes=1/no=0 */ |
| clamping, /* video data clamping yes=1/no=0 */ |
| filter_type, /* 0=disabled, 1=3 tap, 2=5 tap filter */ |
| capture, /* 0=disabled, 1=enabled */ |
| largeview, /* 0=disabled, 1=enabled */ |
| decompression, /* 0=disabled, 1=forced, 2=allowed */ |
| upscaling; /* software image scaling, 0=enabled, 1=disabled */ |
| |
| struct video_picture picture; /* current picture settings */ |
| struct video_window window; /* current window settings */ |
| |
| u16 hw_depth, /* depth (used by the chip) */ |
| hw_palette, /* palette (used by the chip) */ |
| hw_width, /* width (used by the chip) */ |
| hw_height, /* height (used by the chip) */ |
| hs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */ |
| vs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */ |
| start_cropx, /* pixels from HS inactive edge to 1st cropped pixel*/ |
| start_cropy; /* pixels from VS inactive edge to 1st cropped pixel*/ |
| |
| enum w9968cf_vpp_flag vpp_flag; /* post-processing routines in use */ |
| |
| u8 nbuffers, /* number of allocated frame buffers */ |
| altsetting, /* camera alternate setting */ |
| disconnected, /* flag: yes=1, no=0 */ |
| misconfigured, /* flag: yes=1, no=0 */ |
| users, /* flag: number of users holding the device */ |
| streaming; /* flag: yes=1, no=0 */ |
| |
| u8 sensor_initialized; /* flag: yes=1, no=0 */ |
| |
| /* Determined by the image sensor type: */ |
| int sensor, /* type of image sensor chip (CC_*) */ |
| monochrome; /* image sensor is (probably) monochrome */ |
| u16 maxwidth, /* maximum width supported by the image sensor */ |
| maxheight, /* maximum height supported by the image sensor */ |
| minwidth, /* minimum width supported by the image sensor */ |
| minheight; /* minimum height supported by the image sensor */ |
| u8 auto_brt, /* auto brightness enabled flag */ |
| auto_exp, /* auto exposure enabled flag */ |
| backlight, /* backlight exposure algorithm flag */ |
| mirror, /* image is reversed horizontally */ |
| lightfreq, /* power (lighting) frequency */ |
| bandfilt; /* banding filter enabled flag */ |
| s8 clockdiv; /* clock divisor */ |
| |
| /* I2C interface to kernel */ |
| struct i2c_adapter i2c_adapter; |
| struct i2c_client* sensor_client; |
| |
| /* Locks */ |
| struct semaphore dev_sem, /* for probe, disconnect,open and close */ |
| fileop_sem; /* for read and ioctl */ |
| spinlock_t urb_lock, /* for submit_urb() and unlink_urb() */ |
| flist_lock; /* for requested frame list accesses */ |
| wait_queue_head_t open, wait_queue; |
| |
| char command[16]; /* name of the program holding the device */ |
| }; |
| |
| |
| /**************************************************************************** |
| * Macros for debugging * |
| ****************************************************************************/ |
| |
| #undef DBG |
| #undef KDBG |
| #ifdef W9968CF_DEBUG |
| /* For device specific debugging messages */ |
| # define DBG(level, fmt, args...) \ |
| { \ |
| if ( ((specific_debug) && (debug == (level))) || \ |
| ((!specific_debug) && (debug >= (level))) ) { \ |
| if ((level) == 1) \ |
| dev_err(&cam->dev, fmt "\n", ## args); \ |
| else if ((level) == 2 || (level) == 3) \ |
| dev_info(&cam->dev, fmt "\n", ## args); \ |
| else if ((level) == 4) \ |
| dev_warn(&cam->dev, fmt "\n", ## args); \ |
| else if ((level) >= 5) \ |
| dev_info(&cam->dev, "[%s:%d] " fmt "\n", \ |
| __FUNCTION__, __LINE__ , ## args); \ |
| } \ |
| } |
| /* For generic kernel (not device specific) messages */ |
| # define KDBG(level, fmt, args...) \ |
| { \ |
| if ( ((specific_debug) && (debug == (level))) || \ |
| ((!specific_debug) && (debug >= (level))) ) { \ |
| if ((level) >= 1 && (level) <= 4) \ |
| pr_info("w9968cf: " fmt "\n", ## args); \ |
| else if ((level) >= 5) \ |
| pr_debug("w9968cf: [%s:%d] " fmt "\n", __FUNCTION__, \ |
| __LINE__ , ## args); \ |
| } \ |
| } |
| #else |
| /* Not debugging: nothing */ |
| # define DBG(level, fmt, args...) do {;} while(0); |
| # define KDBG(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); /* nothing: it's a placeholder */ |
| |
| #endif /* _W9968CF_H_ */ |