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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [usb/] [ov511.c] - Rev 1780
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/* * OmniVision OV511 Camera-to-USB Bridge Driver * * Copyright (c) 1999-2003 Mark W. McClelland * Original decompression code Copyright 1998-2000 OmniVision Technologies * Many improvements by Bret Wallach <bwallac1@san.rr.com> * Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000) * Snapshot code by Kevin Moore * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org> * Changes by Claudio Matsuoka <claudio@conectiva.com> * Original SAA7111A code by Dave Perks <dperks@ibm.net> * URB error messages from pwc driver by Nemosoft * generic_ioctl() code from videodev.c by Gerd Knorr and Alan Cox * Memory management (rvmalloc) code from bttv driver, by Gerd Knorr and others * * Based on the Linux CPiA driver written by Peter Pregler, * Scott J. Bertin and Johannes Erdfelt. * * Please see the file: linux/Documentation/usb/ov511.txt * and the website at: http://alpha.dyndns.org/ov511 * for more info. * * 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. */ #include <linux/config.h> #include <linux/version.h> #include <linux/module.h> #include <linux/init.h> #include <linux/fs.h> #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/ctype.h> #include <linux/pagemap.h> #include <asm/io.h> #include <asm/semaphore.h> #include <asm/processor.h> #include <linux/wrapper.h> #include <linux/mm.h> #if defined (__i386__) #include <asm/cpufeature.h> #endif #include "ov511.h" /* * Version Information */ #define DRIVER_VERSION "v1.63 for Linux 2.4" #define EMAIL "mark@alpha.dyndns.org" #define DRIVER_AUTHOR "Mark McClelland <mark@alpha.dyndns.org> & Bret Wallach \ & Orion Sky Lawlor <olawlor@acm.org> & Kevin Moore & Charl P. Botha \ <cpbotha@ieee.org> & Claudio Matsuoka <claudio@conectiva.com>" #define DRIVER_DESC "ov511 USB Camera Driver" #define OV511_I2C_RETRIES 3 #define ENABLE_Y_QUANTABLE 1 #define ENABLE_UV_QUANTABLE 1 #define OV511_MAX_UNIT_VIDEO 16 /* Pixel count * 3 bytes for RGB */ #define MAX_FRAME_SIZE(w, h) ((w) * (h) * 3) #define MAX_DATA_SIZE(w, h) (MAX_FRAME_SIZE(w, h) + sizeof(struct timeval)) /* Max size * bytes per YUV420 pixel (1.5) + one extra isoc frame for safety */ #define MAX_RAW_DATA_SIZE(w, h) ((w) * (h) * 3 / 2 + 1024) #define FATAL_ERROR(rc) ((rc) < 0 && (rc) != -EPERM) /********************************************************************** * Module Parameters * (See ov511.txt for detailed descriptions of these) **********************************************************************/ /* These variables (and all static globals) default to zero */ static int autobright = 1; static int autogain = 1; static int autoexp = 1; static int debug; static int snapshot; static int fix_rgb_offset; static int force_rgb; static int cams = 1; static int compress; static int testpat; static int dumppix; static int led = 1; static int dump_bridge; static int dump_sensor; static int printph; static int phy = 0x1f; static int phuv = 0x05; static int pvy = 0x06; static int pvuv = 0x06; static int qhy = 0x14; static int qhuv = 0x03; static int qvy = 0x04; static int qvuv = 0x04; static int lightfreq; static int bandingfilter; static int clockdiv = -1; static int packetsize = -1; static int framedrop = -1; static int fastset; static int force_palette; static int backlight; static int unit_video[OV511_MAX_UNIT_VIDEO]; static int remove_zeros; static int mirror; static int ov518_color; MODULE_PARM(autobright, "i"); MODULE_PARM_DESC(autobright, "Sensor automatically changes brightness"); MODULE_PARM(autogain, "i"); MODULE_PARM_DESC(autogain, "Sensor automatically changes gain"); MODULE_PARM(autoexp, "i"); MODULE_PARM_DESC(autoexp, "Sensor automatically changes exposure"); MODULE_PARM(debug, "i"); MODULE_PARM_DESC(debug, "Debug level: 0=none, 1=inits, 2=warning, 3=config, 4=functions, 5=max"); MODULE_PARM(snapshot, "i"); MODULE_PARM_DESC(snapshot, "Enable snapshot mode"); MODULE_PARM(fix_rgb_offset, "i"); MODULE_PARM_DESC(fix_rgb_offset, "Fix vertical misalignment of red and blue at 640x480"); MODULE_PARM(force_rgb, "i"); MODULE_PARM_DESC(force_rgb, "Read RGB instead of BGR"); MODULE_PARM(cams, "i"); MODULE_PARM_DESC(cams, "Number of simultaneous cameras"); MODULE_PARM(compress, "i"); MODULE_PARM_DESC(compress, "Turn on compression (not reliable yet)"); MODULE_PARM(testpat, "i"); MODULE_PARM_DESC(testpat, "Replace image with vertical bar testpattern (only partially working)"); MODULE_PARM(dumppix, "i"); MODULE_PARM_DESC(dumppix, "Dump raw pixel data"); MODULE_PARM(led, "i"); MODULE_PARM_DESC(led, "LED policy (OV511+ or later). 0=off, 1=on (default), 2=auto (on when open)"); MODULE_PARM(dump_bridge, "i"); MODULE_PARM_DESC(dump_bridge, "Dump the bridge registers"); MODULE_PARM(dump_sensor, "i"); MODULE_PARM_DESC(dump_sensor, "Dump the sensor registers"); MODULE_PARM(printph, "i"); MODULE_PARM_DESC(printph, "Print frame start/end headers"); MODULE_PARM(phy, "i"); MODULE_PARM_DESC(phy, "Prediction range (horiz. Y)"); MODULE_PARM(phuv, "i"); MODULE_PARM_DESC(phuv, "Prediction range (horiz. UV)"); MODULE_PARM(pvy, "i"); MODULE_PARM_DESC(pvy, "Prediction range (vert. Y)"); MODULE_PARM(pvuv, "i"); MODULE_PARM_DESC(pvuv, "Prediction range (vert. UV)"); MODULE_PARM(qhy, "i"); MODULE_PARM_DESC(qhy, "Quantization threshold (horiz. Y)"); MODULE_PARM(qhuv, "i"); MODULE_PARM_DESC(qhuv, "Quantization threshold (horiz. UV)"); MODULE_PARM(qvy, "i"); MODULE_PARM_DESC(qvy, "Quantization threshold (vert. Y)"); MODULE_PARM(qvuv, "i"); MODULE_PARM_DESC(qvuv, "Quantization threshold (vert. UV)"); MODULE_PARM(lightfreq, "i"); MODULE_PARM_DESC(lightfreq, "Light frequency. Set to 50 or 60 Hz, or zero for default settings"); MODULE_PARM(bandingfilter, "i"); MODULE_PARM_DESC(bandingfilter, "Enable banding filter (to reduce effects of fluorescent lighting)"); MODULE_PARM(clockdiv, "i"); MODULE_PARM_DESC(clockdiv, "Force pixel clock divisor to a specific value"); MODULE_PARM(packetsize, "i"); MODULE_PARM_DESC(packetsize, "Force a specific isoc packet size"); MODULE_PARM(framedrop, "i"); MODULE_PARM_DESC(framedrop, "Force a specific frame drop register setting"); MODULE_PARM(fastset, "i"); MODULE_PARM_DESC(fastset, "Allows picture settings to take effect immediately"); MODULE_PARM(force_palette, "i"); MODULE_PARM_DESC(force_palette, "Force the palette to a specific value"); MODULE_PARM(backlight, "i"); MODULE_PARM_DESC(backlight, "For objects that are lit from behind"); MODULE_PARM(unit_video, "1-" __MODULE_STRING(OV511_MAX_UNIT_VIDEO) "i"); MODULE_PARM_DESC(unit_video, "Force use of specific minor number(s). 0 is not allowed."); MODULE_PARM(remove_zeros, "i"); MODULE_PARM_DESC(remove_zeros, "Remove zero-padding from uncompressed incoming data"); MODULE_PARM(mirror, "i"); MODULE_PARM_DESC(mirror, "Reverse image horizontally"); MODULE_PARM(ov518_color, "i"); MODULE_PARM_DESC(ov518_color, "Enable OV518 color (experimental)"); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); /********************************************************************** * Miscellaneous Globals **********************************************************************/ static struct usb_driver ov511_driver; static struct ov51x_decomp_ops *ov511_decomp_ops; static struct ov51x_decomp_ops *ov511_mmx_decomp_ops; static struct ov51x_decomp_ops *ov518_decomp_ops; static struct ov51x_decomp_ops *ov518_mmx_decomp_ops; /* Number of times to retry a failed I2C transaction. Increase this if you * are getting "Failed to read sensor ID..." */ static int i2c_detect_tries = 5; /* MMX support is present in kernel and CPU. Checked upon decomp module load. */ static int ov51x_mmx_available; static struct usb_device_id device_table [] = { { USB_DEVICE(VEND_OMNIVISION, PROD_OV511) }, { USB_DEVICE(VEND_OMNIVISION, PROD_OV511PLUS) }, { USB_DEVICE(VEND_OMNIVISION, PROD_OV518) }, { USB_DEVICE(VEND_OMNIVISION, PROD_OV518PLUS) }, { USB_DEVICE(VEND_MATTEL, PROD_ME2CAM) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, device_table); static unsigned char yQuanTable511[] = OV511_YQUANTABLE; static unsigned char uvQuanTable511[] = OV511_UVQUANTABLE; static unsigned char yQuanTable518[] = OV518_YQUANTABLE; static unsigned char uvQuanTable518[] = OV518_UVQUANTABLE; /********************************************************************** * Symbolic Names **********************************************************************/ /* Known OV511-based cameras */ static struct symbolic_list camlist[] = { { 0, "Generic Camera (no ID)" }, { 1, "Mustek WCam 3X" }, { 3, "D-Link DSB-C300" }, { 4, "Generic OV511/OV7610" }, { 5, "Puretek PT-6007" }, { 6, "Lifeview USB Life TV (NTSC)" }, { 21, "Creative Labs WebCam 3" }, { 22, "Lifeview USB Life TV (PAL D/K+B/G)" }, { 36, "Koala-Cam" }, { 38, "Lifeview USB Life TV (PAL)" }, { 41, "Samsung Anycam MPC-M10" }, { 43, "Mtekvision Zeca MV402" }, { 46, "Suma eON" }, { 70, "Lifeview USB Life TV (PAL/SECAM)" }, { 100, "Lifeview RoboCam" }, { 102, "AverMedia InterCam Elite" }, { 112, "MediaForte MV300" }, /* or OV7110 evaluation kit */ { 134, "Ezonics EZCam II" }, { 192, "Webeye 2000B" }, { 253, "Alpha Vision Tech. AlphaCam SE" }, { -1, NULL } }; /* Video4Linux1 Palettes */ static struct symbolic_list v4l1_plist[] = { { VIDEO_PALETTE_GREY, "GREY" }, { VIDEO_PALETTE_HI240, "HI240" }, { VIDEO_PALETTE_RGB565, "RGB565" }, { VIDEO_PALETTE_RGB24, "RGB24" }, { VIDEO_PALETTE_RGB32, "RGB32" }, { VIDEO_PALETTE_RGB555, "RGB555" }, { VIDEO_PALETTE_YUV422, "YUV422" }, { VIDEO_PALETTE_YUYV, "YUYV" }, { VIDEO_PALETTE_UYVY, "UYVY" }, { VIDEO_PALETTE_YUV420, "YUV420" }, { VIDEO_PALETTE_YUV411, "YUV411" }, { VIDEO_PALETTE_RAW, "RAW" }, { VIDEO_PALETTE_YUV422P,"YUV422P" }, { VIDEO_PALETTE_YUV411P,"YUV411P" }, { VIDEO_PALETTE_YUV420P,"YUV420P" }, { VIDEO_PALETTE_YUV410P,"YUV410P" }, { -1, NULL } }; static struct symbolic_list brglist[] = { { BRG_OV511, "OV511" }, { BRG_OV511PLUS, "OV511+" }, { BRG_OV518, "OV518" }, { BRG_OV518PLUS, "OV518+" }, { -1, NULL } }; #if defined(CONFIG_VIDEO_PROC_FS) static struct symbolic_list senlist[] = { { SEN_OV76BE, "OV76BE" }, { SEN_OV7610, "OV7610" }, { SEN_OV7620, "OV7620" }, { SEN_OV7620AE, "OV7620AE" }, { SEN_OV6620, "OV6620" }, { SEN_OV6630, "OV6630" }, { SEN_OV6630AE, "OV6630AE" }, { SEN_OV6630AF, "OV6630AF" }, { SEN_OV8600, "OV8600" }, { SEN_KS0127, "KS0127" }, { SEN_KS0127B, "KS0127B" }, { SEN_SAA7111A, "SAA7111A" }, { -1, NULL } }; #endif /* URB error codes: */ static struct symbolic_list urb_errlist[] = { { -ENOSR, "Buffer error (overrun)" }, { -EPIPE, "Stalled (device not responding)" }, { -EOVERFLOW, "Babble (bad cable?)" }, { -EPROTO, "Bit-stuff error (bad cable?)" }, { -EILSEQ, "CRC/Timeout" }, { -ETIMEDOUT, "NAK (device does not respond)" }, { -1, NULL } }; /********************************************************************** * Prototypes **********************************************************************/ static void ov51x_clear_snapshot(struct usb_ov511 *); static inline int sensor_get_picture(struct usb_ov511 *, struct video_picture *); #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) static int sensor_get_exposure(struct usb_ov511 *, unsigned char *); static int ov51x_control_ioctl(struct inode *, struct file *, unsigned int, unsigned long); static int ov51x_check_snapshot(struct usb_ov511 *); #endif /********************************************************************** * Memory management **********************************************************************/ /* Here we want the physical address of the memory. * This is used when initializing the contents of the area. */ static inline unsigned long kvirt_to_pa(unsigned long adr) { unsigned long kva, ret; kva = (unsigned long) page_address(vmalloc_to_page((void *)adr)); kva |= adr & (PAGE_SIZE-1); /* restore the offset */ ret = __pa(kva); return ret; } static void * rvmalloc(unsigned long size) { void *mem; unsigned long adr; size = PAGE_ALIGN(size); mem = vmalloc_32(size); if (!mem) return NULL; memset(mem, 0, size); /* Clear the ram out, no junk to the user */ adr = (unsigned long) mem; while (size > 0) { mem_map_reserve(vmalloc_to_page((void *)adr)); adr += PAGE_SIZE; size -= PAGE_SIZE; } return mem; } static void rvfree(void *mem, unsigned long size) { unsigned long adr; if (!mem) return; adr = (unsigned long) mem; while ((long) size > 0) { mem_map_unreserve(vmalloc_to_page((void *)adr)); adr += PAGE_SIZE; size -= PAGE_SIZE; } vfree(mem); } /********************************************************************** * /proc interface * Based on the CPiA driver version 0.7.4 -claudio **********************************************************************/ #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) static struct proc_dir_entry *ov511_proc_entry = NULL; extern struct proc_dir_entry *video_proc_entry; static struct file_operations ov511_control_fops = { .ioctl = ov51x_control_ioctl, }; #define YES_NO(x) ((x) ? "yes" : "no") /* /proc/video/ov511/<minor#>/info */ static int ov511_read_proc_info(char *page, char **start, off_t off, int count, int *eof, void *data) { char *out = page; int i, len; struct usb_ov511 *ov = data; struct video_picture p; unsigned char exp; if (!ov || !ov->dev) return -ENODEV; sensor_get_picture(ov, &p); sensor_get_exposure(ov, &exp); /* IMPORTANT: This output MUST be kept under PAGE_SIZE * or we need to get more sophisticated. */ out += sprintf(out, "driver_version : %s\n", DRIVER_VERSION); out += sprintf(out, "custom_id : %d\n", ov->customid); out += sprintf(out, "model : %s\n", ov->desc); out += sprintf(out, "streaming : %s\n", YES_NO(ov->streaming)); out += sprintf(out, "grabbing : %s\n", YES_NO(ov->grabbing)); out += sprintf(out, "compress : %s\n", YES_NO(ov->compress)); out += sprintf(out, "subcapture : %s\n", YES_NO(ov->sub_flag)); out += sprintf(out, "sub_size : %d %d %d %d\n", ov->subx, ov->suby, ov->subw, ov->subh); out += sprintf(out, "data_format : %s\n", force_rgb ? "RGB" : "BGR"); out += sprintf(out, "brightness : %d\n", p.brightness >> 8); out += sprintf(out, "colour : %d\n", p.colour >> 8); out += sprintf(out, "contrast : %d\n", p.contrast >> 8); out += sprintf(out, "hue : %d\n", p.hue >> 8); out += sprintf(out, "exposure : %d\n", exp); out += sprintf(out, "num_frames : %d\n", OV511_NUMFRAMES); for (i = 0; i < OV511_NUMFRAMES; i++) { out += sprintf(out, "frame : %d\n", i); out += sprintf(out, " depth : %d\n", ov->frame[i].depth); out += sprintf(out, " size : %d %d\n", ov->frame[i].width, ov->frame[i].height); out += sprintf(out, " format : %s\n", symbolic(v4l1_plist, ov->frame[i].format)); out += sprintf(out, " data_buffer : 0x%p\n", ov->frame[i].data); } out += sprintf(out, "snap_enabled : %s\n", YES_NO(ov->snap_enabled)); out += sprintf(out, "bridge : %s\n", symbolic(brglist, ov->bridge)); out += sprintf(out, "sensor : %s\n", symbolic(senlist, ov->sensor)); out += sprintf(out, "packet_size : %d\n", ov->packet_size); out += sprintf(out, "framebuffer : 0x%p\n", ov->fbuf); out += sprintf(out, "packet_numbering: %d\n", ov->packet_numbering); out += sprintf(out, "topology : %s\n", ov->usb_path); len = out - page; len -= off; if (len < count) { *eof = 1; if (len <= 0) return 0; } else len = count; *start = page + off; return len; } /* /proc/video/ov511/<minor#>/button * * When the camera's button is pressed, the output of this will change from a * 0 to a 1 (ASCII). It will retain this value until it is read, after which * it will reset to zero. * * SECURITY NOTE: Since reading this file can change the state of the snapshot * status, it is important for applications that open it to keep it locked * against access by other processes, using flock() or a similar mechanism. No * locking is provided by this driver. */ static int ov511_read_proc_button(char *page, char **start, off_t off, int count, int *eof, void *data) { char *out = page; int len, status; struct usb_ov511 *ov = data; if (!ov || !ov->dev) return -ENODEV; status = ov51x_check_snapshot(ov); out += sprintf(out, "%d", status); if (status) ov51x_clear_snapshot(ov); len = out - page; len -= off; if (len < count) { *eof = 1; if (len <= 0) return 0; } else { len = count; } *start = page + off; return len; } static void create_proc_ov511_cam(struct usb_ov511 *ov) { char dirname[10]; if (!ov511_proc_entry || !ov) return; /* Create per-device directory */ snprintf(dirname, 10, "%d", ov->vdev.minor); PDEBUG(4, "creating /proc/video/ov511/%s/", dirname); ov->proc_devdir = create_proc_entry(dirname, S_IFDIR, ov511_proc_entry); if (!ov->proc_devdir) return; ov->proc_devdir->owner = THIS_MODULE; /* Create "info" entry (human readable device information) */ PDEBUG(4, "creating /proc/video/ov511/%s/info", dirname); ov->proc_info = create_proc_read_entry("info", S_IFREG|S_IRUGO|S_IWUSR, ov->proc_devdir, ov511_read_proc_info, ov); if (!ov->proc_info) return; ov->proc_info->owner = THIS_MODULE; /* Don't create it if old snapshot mode on (would cause race cond.) */ if (!snapshot) { /* Create "button" entry (snapshot button status) */ PDEBUG(4, "creating /proc/video/ov511/%s/button", dirname); ov->proc_button = create_proc_read_entry("button", S_IFREG|S_IRUGO|S_IWUSR, ov->proc_devdir, ov511_read_proc_button, ov); if (!ov->proc_button) return; ov->proc_button->owner = THIS_MODULE; } /* Create "control" entry (ioctl() interface) */ PDEBUG(4, "creating /proc/video/ov511/%s/control", dirname); lock_kernel(); ov->proc_control = create_proc_entry("control", S_IFREG|S_IRUGO|S_IWUSR, ov->proc_devdir); if (!ov->proc_control) { unlock_kernel(); return; } ov->proc_control->owner = THIS_MODULE; ov->proc_control->data = ov; ov->proc_control->proc_fops = &ov511_control_fops; unlock_kernel(); } static void destroy_proc_ov511_cam(struct usb_ov511 *ov) { char dirname[10]; if (!ov || !ov->proc_devdir) return; snprintf(dirname, 10, "%d", ov->vdev.minor); /* Destroy "control" entry */ if (ov->proc_control) { PDEBUG(4, "destroying /proc/video/ov511/%s/control", dirname); remove_proc_entry("control", ov->proc_devdir); ov->proc_control = NULL; } /* Destroy "button" entry */ if (ov->proc_button) { PDEBUG(4, "destroying /proc/video/ov511/%s/button", dirname); remove_proc_entry("button", ov->proc_devdir); ov->proc_button = NULL; } /* Destroy "info" entry */ if (ov->proc_info) { PDEBUG(4, "destroying /proc/video/ov511/%s/info", dirname); remove_proc_entry("info", ov->proc_devdir); ov->proc_info = NULL; } /* Destroy per-device directory */ PDEBUG(4, "destroying /proc/video/ov511/%s/", dirname); remove_proc_entry(dirname, ov511_proc_entry); ov->proc_devdir = NULL; } static void proc_ov511_create(void) { /* No current standard here. Alan prefers /proc/video/ as it keeps * /proc "less cluttered than /proc/randomcardifoundintheshed/" * -claudio */ if (video_proc_entry == NULL) { err("Error: /proc/video/ does not exist"); return; } ov511_proc_entry = create_proc_entry("ov511", S_IFDIR, video_proc_entry); if (ov511_proc_entry) ov511_proc_entry->owner = THIS_MODULE; else err("Unable to create /proc/video/ov511"); } static void proc_ov511_destroy(void) { PDEBUG(3, "removing /proc/video/ov511"); if (ov511_proc_entry == NULL) return; remove_proc_entry("ov511", video_proc_entry); } #endif /* CONFIG_PROC_FS && CONFIG_VIDEO_PROC_FS */ /********************************************************************** * * Register I/O * **********************************************************************/ /* Write an OV51x register */ static int reg_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value) { int rc; PDEBUG(5, "0x%02X:0x%02X", reg, value); down(&ov->cbuf_lock); ov->cbuf[0] = value; rc = usb_control_msg(ov->dev, usb_sndctrlpipe(ov->dev, 0), (ov->bclass == BCL_OV518)?1:2 /* REG_IO */, USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, (__u16)reg, &ov->cbuf[0], 1, HZ); up(&ov->cbuf_lock); if (rc < 0) err("reg write: error %d: %s", rc, symbolic(urb_errlist, rc)); return rc; } /* Read from an OV51x register */ /* returns: negative is error, pos or zero is data */ static int reg_r(struct usb_ov511 *ov, unsigned char reg) { int rc; down(&ov->cbuf_lock); rc = usb_control_msg(ov->dev, usb_rcvctrlpipe(ov->dev, 0), (ov->bclass == BCL_OV518)?1:3 /* REG_IO */, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, (__u16)reg, &ov->cbuf[0], 1, HZ); if (rc < 0) { err("reg read: error %d: %s", rc, symbolic(urb_errlist, rc)); } else { rc = ov->cbuf[0]; PDEBUG(5, "0x%02X:0x%02X", reg, ov->cbuf[0]); } up(&ov->cbuf_lock); return rc; } /* * Writes bits at positions specified by mask to an OV51x reg. Bits that are in * the same position as 1's in "mask" are cleared and set to "value". Bits * that are in the same position as 0's in "mask" are preserved, regardless * of their respective state in "value". */ static int reg_w_mask(struct usb_ov511 *ov, unsigned char reg, unsigned char value, unsigned char mask) { int ret; unsigned char oldval, newval; ret = reg_r(ov, reg); if (ret < 0) return ret; oldval = (unsigned char) ret; oldval &= (~mask); /* Clear the masked bits */ value &= mask; /* Enforce mask on value */ newval = oldval | value; /* Set the desired bits */ return (reg_w(ov, reg, newval)); } /* * Writes multiple (n) byte value to a single register. Only valid with certain * registers (0x30 and 0xc4 - 0xce). */ static int ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n) { int rc; PDEBUG(5, "0x%02X:%7d, n=%d", reg, val, n); down(&ov->cbuf_lock); *((u32 *)ov->cbuf) = __cpu_to_le32(val); rc = usb_control_msg(ov->dev, usb_sndctrlpipe(ov->dev, 0), 1 /* REG_IO */, USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, (__u16)reg, ov->cbuf, n, HZ); up(&ov->cbuf_lock); if (rc < 0) err("reg write multiple: error %d: %s", rc, symbolic(urb_errlist, rc)); return rc; } static int ov511_upload_quan_tables(struct usb_ov511 *ov) { unsigned char *pYTable = yQuanTable511; unsigned char *pUVTable = uvQuanTable511; unsigned char val0, val1; int i, rc, reg = R511_COMP_LUT_BEGIN; PDEBUG(4, "Uploading quantization tables"); for (i = 0; i < OV511_QUANTABLESIZE / 2; i++) { if (ENABLE_Y_QUANTABLE) { val0 = *pYTable++; val1 = *pYTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; rc = reg_w(ov, reg, val0); if (rc < 0) return rc; } if (ENABLE_UV_QUANTABLE) { val0 = *pUVTable++; val1 = *pUVTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; rc = reg_w(ov, reg + OV511_QUANTABLESIZE/2, val0); if (rc < 0) return rc; } reg++; } return 0; } /* OV518 quantization tables are 8x4 (instead of 8x8) */ static int ov518_upload_quan_tables(struct usb_ov511 *ov) { unsigned char *pYTable = yQuanTable518; unsigned char *pUVTable = uvQuanTable518; unsigned char val0, val1; int i, rc, reg = R511_COMP_LUT_BEGIN; PDEBUG(4, "Uploading quantization tables"); for (i = 0; i < OV518_QUANTABLESIZE / 2; i++) { if (ENABLE_Y_QUANTABLE) { val0 = *pYTable++; val1 = *pYTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; rc = reg_w(ov, reg, val0); if (rc < 0) return rc; } if (ENABLE_UV_QUANTABLE) { val0 = *pUVTable++; val1 = *pUVTable++; val0 &= 0x0f; val1 &= 0x0f; val0 |= val1 << 4; rc = reg_w(ov, reg + OV518_QUANTABLESIZE/2, val0); if (rc < 0) return rc; } reg++; } return 0; } static int ov51x_reset(struct usb_ov511 *ov, unsigned char reset_type) { int rc; /* Setting bit 0 not allowed on 518/518Plus */ if (ov->bclass == BCL_OV518) reset_type &= 0xfe; PDEBUG(4, "Reset: type=0x%02X", reset_type); rc = reg_w(ov, R51x_SYS_RESET, reset_type); rc = reg_w(ov, R51x_SYS_RESET, 0); if (rc < 0) err("reset: command failed"); return rc; } /********************************************************************** * * Low-level I2C I/O functions * **********************************************************************/ /* NOTE: Do not call this function directly! * The OV518 I2C I/O procedure is different, hence, this function. * This is normally only called from i2c_w(). Note that this function * always succeeds regardless of whether the sensor is present and working. */ static int ov518_i2c_write_internal(struct usb_ov511 *ov, unsigned char reg, unsigned char value) { int rc; PDEBUG(5, "0x%02X:0x%02X", reg, value); /* Select camera register */ rc = reg_w(ov, R51x_I2C_SADDR_3, reg); if (rc < 0) return rc; /* Write "value" to I2C data port of OV511 */ rc = reg_w(ov, R51x_I2C_DATA, value); if (rc < 0) return rc; /* Initiate 3-byte write cycle */ rc = reg_w(ov, R518_I2C_CTL, 0x01); if (rc < 0) return rc; return 0; } /* NOTE: Do not call this function directly! */ static int ov511_i2c_write_internal(struct usb_ov511 *ov, unsigned char reg, unsigned char value) { int rc, retries; PDEBUG(5, "0x%02X:0x%02X", reg, value); /* Three byte write cycle */ for (retries = OV511_I2C_RETRIES; ; ) { /* Select camera register */ rc = reg_w(ov, R51x_I2C_SADDR_3, reg); if (rc < 0) return rc; /* Write "value" to I2C data port of OV511 */ rc = reg_w(ov, R51x_I2C_DATA, value); if (rc < 0) return rc; /* Initiate 3-byte write cycle */ rc = reg_w(ov, R511_I2C_CTL, 0x01); if (rc < 0) return rc; do rc = reg_r(ov, R511_I2C_CTL); while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */ if (rc < 0) return rc; if ((rc&2) == 0) /* Ack? */ break; #if 0 /* I2C abort */ reg_w(ov, R511_I2C_CTL, 0x10); #endif if (--retries < 0) { err("i2c write retries exhausted"); return -1; } } return 0; } /* NOTE: Do not call this function directly! * The OV518 I2C I/O procedure is different, hence, this function. * This is normally only called from i2c_r(). Note that this function * always succeeds regardless of whether the sensor is present and working. */ static int ov518_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg) { int rc, value; /* Select camera register */ rc = reg_w(ov, R51x_I2C_SADDR_2, reg); if (rc < 0) return rc; /* Initiate 2-byte write cycle */ rc = reg_w(ov, R518_I2C_CTL, 0x03); if (rc < 0) return rc; /* Initiate 2-byte read cycle */ rc = reg_w(ov, R518_I2C_CTL, 0x05); if (rc < 0) return rc; value = reg_r(ov, R51x_I2C_DATA); PDEBUG(5, "0x%02X:0x%02X", reg, value); return value; } /* NOTE: Do not call this function directly! * returns: negative is error, pos or zero is data */ static int ov511_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg) { int rc, value, retries; /* Two byte write cycle */ for (retries = OV511_I2C_RETRIES; ; ) { /* Select camera register */ rc = reg_w(ov, R51x_I2C_SADDR_2, reg); if (rc < 0) return rc; /* Initiate 2-byte write cycle */ rc = reg_w(ov, R511_I2C_CTL, 0x03); if (rc < 0) return rc; do rc = reg_r(ov, R511_I2C_CTL); while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */ if (rc < 0) return rc; if ((rc&2) == 0) /* Ack? */ break; /* I2C abort */ reg_w(ov, R511_I2C_CTL, 0x10); if (--retries < 0) { err("i2c write retries exhausted"); return -1; } } /* Two byte read cycle */ for (retries = OV511_I2C_RETRIES; ; ) { /* Initiate 2-byte read cycle */ rc = reg_w(ov, R511_I2C_CTL, 0x05); if (rc < 0) return rc; do rc = reg_r(ov, R511_I2C_CTL); while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */ if (rc < 0) return rc; if ((rc&2) == 0) /* Ack? */ break; /* I2C abort */ rc = reg_w(ov, R511_I2C_CTL, 0x10); if (rc < 0) return rc; if (--retries < 0) { err("i2c read retries exhausted"); return -1; } } value = reg_r(ov, R51x_I2C_DATA); PDEBUG(5, "0x%02X:0x%02X", reg, value); /* This is needed to make i2c_w() work */ rc = reg_w(ov, R511_I2C_CTL, 0x05); if (rc < 0) return rc; return value; } /* returns: negative is error, pos or zero is data */ static int i2c_r(struct usb_ov511 *ov, unsigned char reg) { int rc; down(&ov->i2c_lock); if (ov->bclass == BCL_OV518) rc = ov518_i2c_read_internal(ov, reg); else rc = ov511_i2c_read_internal(ov, reg); up(&ov->i2c_lock); return rc; } static int i2c_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value) { int rc; down(&ov->i2c_lock); if (ov->bclass == BCL_OV518) rc = ov518_i2c_write_internal(ov, reg, value); else rc = ov511_i2c_write_internal(ov, reg, value); up(&ov->i2c_lock); return rc; } /* Do not call this function directly! */ static int ov51x_i2c_write_mask_internal(struct usb_ov511 *ov, unsigned char reg, unsigned char value, unsigned char mask) { int rc; unsigned char oldval, newval; if (mask == 0xff) { newval = value; } else { if (ov->bclass == BCL_OV518) rc = ov518_i2c_read_internal(ov, reg); else rc = ov511_i2c_read_internal(ov, reg); if (rc < 0) return rc; oldval = (unsigned char) rc; oldval &= (~mask); /* Clear the masked bits */ value &= mask; /* Enforce mask on value */ newval = oldval | value; /* Set the desired bits */ } if (ov->bclass == BCL_OV518) return (ov518_i2c_write_internal(ov, reg, newval)); else return (ov511_i2c_write_internal(ov, reg, newval)); } /* Writes bits at positions specified by mask to an I2C reg. Bits that are in * the same position as 1's in "mask" are cleared and set to "value". Bits * that are in the same position as 0's in "mask" are preserved, regardless * of their respective state in "value". */ static int i2c_w_mask(struct usb_ov511 *ov, unsigned char reg, unsigned char value, unsigned char mask) { int rc; down(&ov->i2c_lock); rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask); up(&ov->i2c_lock); return rc; } /* Set the read and write slave IDs. The "slave" argument is the write slave, * and the read slave will be set to (slave + 1). ov->i2c_lock should be held * when calling this. This should not be called from outside the i2c I/O * functions. */ static inline int i2c_set_slave_internal(struct usb_ov511 *ov, unsigned char slave) { int rc; rc = reg_w(ov, R51x_I2C_W_SID, slave); if (rc < 0) return rc; rc = reg_w(ov, R51x_I2C_R_SID, slave + 1); if (rc < 0) return rc; return 0; } /* Write to a specific I2C slave ID and register, using the specified mask */ static int i2c_w_slave(struct usb_ov511 *ov, unsigned char slave, unsigned char reg, unsigned char value, unsigned char mask) { int rc = 0; down(&ov->i2c_lock); /* Set new slave IDs */ rc = i2c_set_slave_internal(ov, slave); if (rc < 0) goto out; rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask); out: /* Restore primary IDs */ if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0) err("Couldn't restore primary I2C slave"); up(&ov->i2c_lock); return rc; } /* Read from a specific I2C slave ID and register */ static int i2c_r_slave(struct usb_ov511 *ov, unsigned char slave, unsigned char reg) { int rc; down(&ov->i2c_lock); /* Set new slave IDs */ rc = i2c_set_slave_internal(ov, slave); if (rc < 0) goto out; if (ov->bclass == BCL_OV518) rc = ov518_i2c_read_internal(ov, reg); else rc = ov511_i2c_read_internal(ov, reg); out: /* Restore primary IDs */ if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0) err("Couldn't restore primary I2C slave"); up(&ov->i2c_lock); return rc; } /* Sets I2C read and write slave IDs. Returns <0 for error */ static int ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid) { int rc; down(&ov->i2c_lock); rc = i2c_set_slave_internal(ov, sid); if (rc < 0) goto out; // FIXME: Is this actually necessary? rc = ov51x_reset(ov, OV511_RESET_NOREGS); if (rc < 0) goto out; out: up(&ov->i2c_lock); return rc; } static int write_regvals(struct usb_ov511 *ov, struct ov511_regvals * pRegvals) { int rc; while (pRegvals->bus != OV511_DONE_BUS) { if (pRegvals->bus == OV511_REG_BUS) { if ((rc = reg_w(ov, pRegvals->reg, pRegvals->val)) < 0) return rc; } else if (pRegvals->bus == OV511_I2C_BUS) { if ((rc = i2c_w(ov, pRegvals->reg, pRegvals->val)) < 0) return rc; } else { err("Bad regval array"); return -1; } pRegvals++; } return 0; } #ifdef OV511_DEBUG static void dump_i2c_range(struct usb_ov511 *ov, int reg1, int regn) { int i, rc; for (i = reg1; i <= regn; i++) { rc = i2c_r(ov, i); info("Sensor[0x%02X] = 0x%02X", i, rc); } } static void dump_i2c_regs(struct usb_ov511 *ov) { info("I2C REGS"); dump_i2c_range(ov, 0x00, 0x7C); } static void dump_reg_range(struct usb_ov511 *ov, int reg1, int regn) { int i, rc; for (i = reg1; i <= regn; i++) { rc = reg_r(ov, i); info("OV511[0x%02X] = 0x%02X", i, rc); } } static void ov511_dump_regs(struct usb_ov511 *ov) { info("CAMERA INTERFACE REGS"); dump_reg_range(ov, 0x10, 0x1f); info("DRAM INTERFACE REGS"); dump_reg_range(ov, 0x20, 0x23); info("ISO FIFO REGS"); dump_reg_range(ov, 0x30, 0x31); info("PIO REGS"); dump_reg_range(ov, 0x38, 0x39); dump_reg_range(ov, 0x3e, 0x3e); info("I2C REGS"); dump_reg_range(ov, 0x40, 0x49); info("SYSTEM CONTROL REGS"); dump_reg_range(ov, 0x50, 0x55); dump_reg_range(ov, 0x5e, 0x5f); info("OmniCE REGS"); dump_reg_range(ov, 0x70, 0x79); /* NOTE: Quantization tables are not readable. You will get the value * in reg. 0x79 for every table register */ dump_reg_range(ov, 0x80, 0x9f); dump_reg_range(ov, 0xa0, 0xbf); } static void ov518_dump_regs(struct usb_ov511 *ov) { info("VIDEO MODE REGS"); dump_reg_range(ov, 0x20, 0x2f); info("DATA PUMP AND SNAPSHOT REGS"); dump_reg_range(ov, 0x30, 0x3f); info("I2C REGS"); dump_reg_range(ov, 0x40, 0x4f); info("SYSTEM CONTROL AND VENDOR REGS"); dump_reg_range(ov, 0x50, 0x5f); info("60 - 6F"); dump_reg_range(ov, 0x60, 0x6f); info("70 - 7F"); dump_reg_range(ov, 0x70, 0x7f); info("Y QUANTIZATION TABLE"); dump_reg_range(ov, 0x80, 0x8f); info("UV QUANTIZATION TABLE"); dump_reg_range(ov, 0x90, 0x9f); info("A0 - BF"); dump_reg_range(ov, 0xa0, 0xbf); info("CBR"); dump_reg_range(ov, 0xc0, 0xcf); } #endif /*****************************************************************************/ /* Temporarily stops OV511 from functioning. Must do this before changing * registers while the camera is streaming */ static inline int ov51x_stop(struct usb_ov511 *ov) { PDEBUG(4, "stopping"); ov->stopped = 1; if (ov->bclass == BCL_OV518) return (reg_w_mask(ov, R51x_SYS_RESET, 0x3a, 0x3a)); else return (reg_w(ov, R51x_SYS_RESET, 0x3d)); } /* Restarts OV511 after ov511_stop() is called. Has no effect if it is not * actually stopped (for performance). */ static inline int ov51x_restart(struct usb_ov511 *ov) { if (ov->stopped) { PDEBUG(4, "restarting"); ov->stopped = 0; /* Reinitialize the stream */ if (ov->bclass == BCL_OV518) reg_w(ov, 0x2f, 0x80); return (reg_w(ov, R51x_SYS_RESET, 0x00)); } return 0; } /* Resets the hardware snapshot button */ static void ov51x_clear_snapshot(struct usb_ov511 *ov) { if (ov->bclass == BCL_OV511) { reg_w(ov, R51x_SYS_SNAP, 0x00); reg_w(ov, R51x_SYS_SNAP, 0x02); reg_w(ov, R51x_SYS_SNAP, 0x00); } else if (ov->bclass == BCL_OV518) { warn("snapshot reset not supported yet on OV518(+)"); } else { err("clear snap: invalid bridge type"); } } #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) /* Checks the status of the snapshot button. Returns 1 if it was pressed since * it was last cleared, and zero in all other cases (including errors) */ static int ov51x_check_snapshot(struct usb_ov511 *ov) { int ret, status = 0; if (ov->bclass == BCL_OV511) { ret = reg_r(ov, R51x_SYS_SNAP); if (ret < 0) { err("Error checking snspshot status (%d)", ret); } else if (ret & 0x08) { status = 1; } } else if (ov->bclass == BCL_OV518) { warn("snapshot check not supported yet on OV518(+)"); } else { err("check snap: invalid bridge type"); } return status; } #endif /* This does an initial reset of an OmniVision sensor and ensures that I2C * is synchronized. Returns <0 for failure. */ static int init_ov_sensor(struct usb_ov511 *ov) { int i, success; /* Reset the sensor */ if (i2c_w(ov, 0x12, 0x80) < 0) return -EIO; /* Wait for it to initialize */ schedule_timeout(1 + 150 * HZ / 1000); for (i = 0, success = 0; i < i2c_detect_tries && !success; i++) { if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) && (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) { success = 1; continue; } /* Reset the sensor */ if (i2c_w(ov, 0x12, 0x80) < 0) return -EIO; /* Wait for it to initialize */ schedule_timeout(1 + 150 * HZ / 1000); /* Dummy read to sync I2C */ if (i2c_r(ov, 0x00) < 0) return -EIO; } if (!success) return -EIO; PDEBUG(1, "I2C synced in %d attempt(s)", i); return 0; } static int ov511_set_packet_size(struct usb_ov511 *ov, int size) { int alt, mult; if (ov51x_stop(ov) < 0) return -EIO; mult = size >> 5; if (ov->bridge == BRG_OV511) { if (size == 0) alt = OV511_ALT_SIZE_0; else if (size == 257) alt = OV511_ALT_SIZE_257; else if (size == 513) alt = OV511_ALT_SIZE_513; else if (size == 769) alt = OV511_ALT_SIZE_769; else if (size == 993) alt = OV511_ALT_SIZE_993; else { err("Set packet size: invalid size (%d)", size); return -EINVAL; } } else if (ov->bridge == BRG_OV511PLUS) { if (size == 0) alt = OV511PLUS_ALT_SIZE_0; else if (size == 33) alt = OV511PLUS_ALT_SIZE_33; else if (size == 129) alt = OV511PLUS_ALT_SIZE_129; else if (size == 257) alt = OV511PLUS_ALT_SIZE_257; else if (size == 385) alt = OV511PLUS_ALT_SIZE_385; else if (size == 513) alt = OV511PLUS_ALT_SIZE_513; else if (size == 769) alt = OV511PLUS_ALT_SIZE_769; else if (size == 961) alt = OV511PLUS_ALT_SIZE_961; else { err("Set packet size: invalid size (%d)", size); return -EINVAL; } } else { err("Set packet size: Invalid bridge type"); return -EINVAL; } PDEBUG(3, "%d, mult=%d, alt=%d", size, mult, alt); if (reg_w(ov, R51x_FIFO_PSIZE, mult) < 0) return -EIO; if (usb_set_interface(ov->dev, ov->iface, alt) < 0) { err("Set packet size: set interface error"); return -EBUSY; } if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) return -EIO; ov->packet_size = size; if (ov51x_restart(ov) < 0) return -EIO; return 0; } /* Note: Unlike the OV511/OV511+, the size argument does NOT include the * optional packet number byte. The actual size *is* stored in ov->packet_size, * though. */ static int ov518_set_packet_size(struct usb_ov511 *ov, int size) { int alt; if (ov51x_stop(ov) < 0) return -EIO; if (ov->bclass == BCL_OV518) { if (size == 0) alt = OV518_ALT_SIZE_0; else if (size == 128) alt = OV518_ALT_SIZE_128; else if (size == 256) alt = OV518_ALT_SIZE_256; else if (size == 384) alt = OV518_ALT_SIZE_384; else if (size == 512) alt = OV518_ALT_SIZE_512; else if (size == 640) alt = OV518_ALT_SIZE_640; else if (size == 768) alt = OV518_ALT_SIZE_768; else if (size == 896) alt = OV518_ALT_SIZE_896; else { err("Set packet size: invalid size (%d)", size); return -EINVAL; } } else { err("Set packet size: Invalid bridge type"); return -EINVAL; } PDEBUG(3, "%d, alt=%d", size, alt); ov->packet_size = size; if (size > 0) { /* Program ISO FIFO size reg (packet number isn't included) */ ov518_reg_w32(ov, 0x30, size, 2); if (ov->packet_numbering) ++ov->packet_size; } if (usb_set_interface(ov->dev, ov->iface, alt) < 0) { err("Set packet size: set interface error"); return -EBUSY; } /* Initialize the stream */ if (reg_w(ov, 0x2f, 0x80) < 0) return -EIO; if (ov51x_restart(ov) < 0) return -EIO; if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) return -EIO; return 0; } /* Upload compression params and quantization tables. Returns 0 for success. */ static int ov511_init_compression(struct usb_ov511 *ov) { int rc = 0; if (!ov->compress_inited) { reg_w(ov, 0x70, phy); reg_w(ov, 0x71, phuv); reg_w(ov, 0x72, pvy); reg_w(ov, 0x73, pvuv); reg_w(ov, 0x74, qhy); reg_w(ov, 0x75, qhuv); reg_w(ov, 0x76, qvy); reg_w(ov, 0x77, qvuv); if (ov511_upload_quan_tables(ov) < 0) { err("Error uploading quantization tables"); rc = -EIO; goto out; } } ov->compress_inited = 1; out: return rc; } /* Upload compression params and quantization tables. Returns 0 for success. */ static int ov518_init_compression(struct usb_ov511 *ov) { int rc = 0; if (!ov->compress_inited) { if (ov518_upload_quan_tables(ov) < 0) { err("Error uploading quantization tables"); rc = -EIO; goto out; } } ov->compress_inited = 1; out: return rc; } /* -------------------------------------------------------------------------- */ /* Sets sensor's contrast setting to "val" */ static int sensor_set_contrast(struct usb_ov511 *ov, unsigned short val) { int rc; PDEBUG(3, "%d", val); if (ov->stop_during_set) if (ov51x_stop(ov) < 0) return -EIO; switch (ov->sensor) { case SEN_OV7610: case SEN_OV6620: { rc = i2c_w(ov, OV7610_REG_CNT, val >> 8); if (rc < 0) goto out; break; } case SEN_OV6630: { rc = i2c_w_mask(ov, OV7610_REG_CNT, val >> 12, 0x0f); if (rc < 0) goto out; break; } case SEN_OV7620: { unsigned char ctab[] = { 0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57, 0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff }; /* Use Y gamma control instead. Bit 0 enables it. */ rc = i2c_w(ov, 0x64, ctab[val>>12]); if (rc < 0) goto out; break; } case SEN_SAA7111A: { rc = i2c_w(ov, 0x0b, val >> 9); if (rc < 0) goto out; break; } default: { PDEBUG(3, "Unsupported with this sensor"); rc = -EPERM; goto out; } } rc = 0; /* Success */ ov->contrast = val; out: if (ov51x_restart(ov) < 0) return -EIO; return rc; } /* Gets sensor's contrast setting */ static int sensor_get_contrast(struct usb_ov511 *ov, unsigned short *val) { int rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV6620: rc = i2c_r(ov, OV7610_REG_CNT); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_OV6630: rc = i2c_r(ov, OV7610_REG_CNT); if (rc < 0) return rc; else *val = rc << 12; break; case SEN_OV7620: /* Use Y gamma reg instead. Bit 0 is the enable bit. */ rc = i2c_r(ov, 0x64); if (rc < 0) return rc; else *val = (rc & 0xfe) << 8; break; case SEN_SAA7111A: *val = ov->contrast; break; default: PDEBUG(3, "Unsupported with this sensor"); return -EPERM; } PDEBUG(3, "%d", *val); ov->contrast = *val; return 0; } /* -------------------------------------------------------------------------- */ /* Sets sensor's brightness setting to "val" */ static int sensor_set_brightness(struct usb_ov511 *ov, unsigned short val) { int rc; PDEBUG(4, "%d", val); if (ov->stop_during_set) if (ov51x_stop(ov) < 0) return -EIO; switch (ov->sensor) { case SEN_OV7610: case SEN_OV76BE: case SEN_OV6620: case SEN_OV6630: rc = i2c_w(ov, OV7610_REG_BRT, val >> 8); if (rc < 0) goto out; break; case SEN_OV7620: /* 7620 doesn't like manual changes when in auto mode */ if (!ov->auto_brt) { rc = i2c_w(ov, OV7610_REG_BRT, val >> 8); if (rc < 0) goto out; } break; case SEN_SAA7111A: rc = i2c_w(ov, 0x0a, val >> 8); if (rc < 0) goto out; break; default: PDEBUG(3, "Unsupported with this sensor"); rc = -EPERM; goto out; } rc = 0; /* Success */ ov->brightness = val; out: if (ov51x_restart(ov) < 0) return -EIO; return rc; } /* Gets sensor's brightness setting */ static int sensor_get_brightness(struct usb_ov511 *ov, unsigned short *val) { int rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV76BE: case SEN_OV7620: case SEN_OV6620: case SEN_OV6630: rc = i2c_r(ov, OV7610_REG_BRT); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_SAA7111A: *val = ov->brightness; break; default: PDEBUG(3, "Unsupported with this sensor"); return -EPERM; } PDEBUG(3, "%d", *val); ov->brightness = *val; return 0; } /* -------------------------------------------------------------------------- */ /* Sets sensor's saturation (color intensity) setting to "val" */ static int sensor_set_saturation(struct usb_ov511 *ov, unsigned short val) { int rc; PDEBUG(3, "%d", val); if (ov->stop_during_set) if (ov51x_stop(ov) < 0) return -EIO; switch (ov->sensor) { case SEN_OV7610: case SEN_OV76BE: case SEN_OV6620: case SEN_OV6630: rc = i2c_w(ov, OV7610_REG_SAT, val >> 8); if (rc < 0) goto out; break; case SEN_OV7620: // /* Use UV gamma control instead. Bits 0 & 7 are reserved. */ // rc = ov_i2c_write(ov->dev, 0x62, (val >> 9) & 0x7e); // if (rc < 0) // goto out; rc = i2c_w(ov, OV7610_REG_SAT, val >> 8); if (rc < 0) goto out; break; case SEN_SAA7111A: rc = i2c_w(ov, 0x0c, val >> 9); if (rc < 0) goto out; break; default: PDEBUG(3, "Unsupported with this sensor"); rc = -EPERM; goto out; } rc = 0; /* Success */ ov->colour = val; out: if (ov51x_restart(ov) < 0) return -EIO; return rc; } /* Gets sensor's saturation (color intensity) setting */ static int sensor_get_saturation(struct usb_ov511 *ov, unsigned short *val) { int rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV76BE: case SEN_OV6620: case SEN_OV6630: rc = i2c_r(ov, OV7610_REG_SAT); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_OV7620: // /* Use UV gamma reg instead. Bits 0 & 7 are reserved. */ // rc = i2c_r(ov, 0x62); // if (rc < 0) // return rc; // else // *val = (rc & 0x7e) << 9; rc = i2c_r(ov, OV7610_REG_SAT); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_SAA7111A: *val = ov->colour; break; default: PDEBUG(3, "Unsupported with this sensor"); return -EPERM; } PDEBUG(3, "%d", *val); ov->colour = *val; return 0; } /* -------------------------------------------------------------------------- */ /* Sets sensor's hue (red/blue balance) setting to "val" */ static int sensor_set_hue(struct usb_ov511 *ov, unsigned short val) { int rc; PDEBUG(3, "%d", val); if (ov->stop_during_set) if (ov51x_stop(ov) < 0) return -EIO; switch (ov->sensor) { case SEN_OV7610: case SEN_OV6620: case SEN_OV6630: rc = i2c_w(ov, OV7610_REG_RED, 0xFF - (val >> 8)); if (rc < 0) goto out; rc = i2c_w(ov, OV7610_REG_BLUE, val >> 8); if (rc < 0) goto out; break; case SEN_OV7620: // Hue control is causing problems. I will enable it once it's fixed. #if 0 rc = i2c_w(ov, 0x7a, (unsigned char)(val >> 8) + 0xb); if (rc < 0) goto out; rc = i2c_w(ov, 0x79, (unsigned char)(val >> 8) + 0xb); if (rc < 0) goto out; #endif break; case SEN_SAA7111A: rc = i2c_w(ov, 0x0d, (val + 32768) >> 8); if (rc < 0) goto out; break; default: PDEBUG(3, "Unsupported with this sensor"); rc = -EPERM; goto out; } rc = 0; /* Success */ ov->hue = val; out: if (ov51x_restart(ov) < 0) return -EIO; return rc; } /* Gets sensor's hue (red/blue balance) setting */ static int sensor_get_hue(struct usb_ov511 *ov, unsigned short *val) { int rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV6620: case SEN_OV6630: rc = i2c_r(ov, OV7610_REG_BLUE); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_OV7620: rc = i2c_r(ov, 0x7a); if (rc < 0) return rc; else *val = rc << 8; break; case SEN_SAA7111A: *val = ov->hue; break; default: PDEBUG(3, "Unsupported with this sensor"); return -EPERM; } PDEBUG(3, "%d", *val); ov->hue = *val; return 0; } /* -------------------------------------------------------------------------- */ static inline int sensor_set_picture(struct usb_ov511 *ov, struct video_picture *p) { int rc; PDEBUG(4, "sensor_set_picture"); ov->whiteness = p->whiteness; /* Don't return error if a setting is unsupported, or rest of settings * will not be performed */ rc = sensor_set_contrast(ov, p->contrast); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_brightness(ov, p->brightness); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_saturation(ov, p->colour); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_hue(ov, p->hue); if (FATAL_ERROR(rc)) return rc; return 0; } static inline int sensor_get_picture(struct usb_ov511 *ov, struct video_picture *p) { int rc; PDEBUG(4, "sensor_get_picture"); /* Don't return error if a setting is unsupported, or rest of settings * will not be performed */ rc = sensor_get_contrast(ov, &(p->contrast)); if (FATAL_ERROR(rc)) return rc; rc = sensor_get_brightness(ov, &(p->brightness)); if (FATAL_ERROR(rc)) return rc; rc = sensor_get_saturation(ov, &(p->colour)); if (FATAL_ERROR(rc)) return rc; rc = sensor_get_hue(ov, &(p->hue)); if (FATAL_ERROR(rc)) return rc; p->whiteness = 105 << 8; return 0; } #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) // FIXME: Exposure range is only 0x00-0x7f in interlace mode /* Sets current exposure for sensor. This only has an effect if auto-exposure * is off */ static inline int sensor_set_exposure(struct usb_ov511 *ov, unsigned char val) { int rc; PDEBUG(3, "%d", val); if (ov->stop_during_set) if (ov51x_stop(ov) < 0) return -EIO; switch (ov->sensor) { case SEN_OV6620: case SEN_OV6630: case SEN_OV7610: case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: rc = i2c_w(ov, 0x10, val); if (rc < 0) goto out; break; case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: PDEBUG(3, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for set_exposure"); return -EINVAL; } rc = 0; /* Success */ ov->exposure = val; out: if (ov51x_restart(ov) < 0) return -EIO; return rc; } /* Gets current exposure level from sensor, regardless of whether it is under * manual control. */ static int sensor_get_exposure(struct usb_ov511 *ov, unsigned char *val) { int rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV6620: case SEN_OV6630: case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: rc = i2c_r(ov, 0x10); if (rc < 0) return rc; else *val = rc; break; case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: val = 0; PDEBUG(3, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for get_exposure"); return -EINVAL; } PDEBUG(3, "%d", *val); ov->exposure = *val; return 0; } #endif /* CONFIG_PROC_FS && CONFIG_VIDEO_PROC_FS */ /* Turns on or off the LED. Only has an effect with OV511+/OV518(+) */ static inline void ov51x_led_control(struct usb_ov511 *ov, int enable) { PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); if (ov->bridge == BRG_OV511PLUS) reg_w(ov, R511_SYS_LED_CTL, enable ? 1 : 0); else if (ov->bclass == BCL_OV518) reg_w_mask(ov, R518_GPIO_OUT, enable ? 0x02 : 0x00, 0x02); return; } /* Matches the sensor's internal frame rate to the lighting frequency. * Valid frequencies are: * 50 - 50Hz, for European and Asian lighting * 60 - 60Hz, for American lighting * * Tested with: OV7610, OV7620, OV76BE, OV6620 * Unsupported: KS0127, KS0127B, SAA7111A * Returns: 0 for success */ static int sensor_set_light_freq(struct usb_ov511 *ov, int freq) { int sixty; PDEBUG(4, "%d Hz", freq); if (freq == 60) sixty = 1; else if (freq == 50) sixty = 0; else { err("Invalid light freq (%d Hz)", freq); return -EINVAL; } switch (ov->sensor) { case SEN_OV7610: i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80); i2c_w(ov, 0x2b, sixty?0x00:0xac); i2c_w_mask(ov, 0x13, 0x10, 0x10); i2c_w_mask(ov, 0x13, 0x00, 0x10); break; case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80); i2c_w(ov, 0x2b, sixty?0x00:0xac); i2c_w_mask(ov, 0x76, 0x01, 0x01); break; case SEN_OV6620: case SEN_OV6630: i2c_w(ov, 0x2b, sixty?0xa8:0x28); i2c_w(ov, 0x2a, sixty?0x84:0xa4); break; case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: PDEBUG(5, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for set_light_freq"); return -EINVAL; } ov->lightfreq = freq; return 0; } /* If enable is true, turn on the sensor's banding filter, otherwise turn it * off. This filter tries to reduce the pattern of horizontal light/dark bands * caused by some (usually fluorescent) lighting. The light frequency must be * set either before or after enabling it with ov51x_set_light_freq(). * * Tested with: OV7610, OV7620, OV76BE, OV6620. * Unsupported: KS0127, KS0127B, SAA7111A * Returns: 0 for success */ static inline int sensor_set_banding_filter(struct usb_ov511 *ov, int enable) { int rc; PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B || ov->sensor == SEN_SAA7111A) { PDEBUG(5, "Unsupported with this sensor"); return -EPERM; } rc = i2c_w_mask(ov, 0x2d, enable?0x04:0x00, 0x04); if (rc < 0) return rc; ov->bandfilt = enable; return 0; } /* If enable is true, turn on the sensor's auto brightness control, otherwise * turn it off. * * Unsupported: KS0127, KS0127B, SAA7111A * Returns: 0 for success */ static inline int sensor_set_auto_brightness(struct usb_ov511 *ov, int enable) { int rc; PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B || ov->sensor == SEN_SAA7111A) { PDEBUG(5, "Unsupported with this sensor"); return -EPERM; } rc = i2c_w_mask(ov, 0x2d, enable?0x10:0x00, 0x10); if (rc < 0) return rc; ov->auto_brt = enable; return 0; } /* If enable is true, turn on the sensor's auto exposure control, otherwise * turn it off. * * Unsupported: KS0127, KS0127B, SAA7111A * Returns: 0 for success */ static inline int sensor_set_auto_exposure(struct usb_ov511 *ov, int enable) { PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); switch (ov->sensor) { case SEN_OV7610: i2c_w_mask(ov, 0x29, enable?0x00:0x80, 0x80); break; case SEN_OV6620: case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: i2c_w_mask(ov, 0x13, enable?0x01:0x00, 0x01); break; case SEN_OV6630: i2c_w_mask(ov, 0x28, enable?0x00:0x10, 0x10); break; case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: PDEBUG(5, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for set_auto_exposure"); return -EINVAL; } ov->auto_exp = enable; return 0; } /* Modifies the sensor's exposure algorithm to allow proper exposure of objects * that are illuminated from behind. * * Tested with: OV6620, OV7620 * Unsupported: OV7610, OV76BE, KS0127, KS0127B, SAA7111A * Returns: 0 for success */ static int sensor_set_backlight(struct usb_ov511 *ov, int enable) { PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); switch (ov->sensor) { case SEN_OV7620: case SEN_OV8600: i2c_w_mask(ov, 0x68, enable?0xe0:0xc0, 0xe0); i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02); break; case SEN_OV6620: i2c_w_mask(ov, 0x4e, enable?0xe0:0xc0, 0xe0); i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); i2c_w_mask(ov, 0x0e, enable?0x80:0x00, 0x80); break; case SEN_OV6630: i2c_w_mask(ov, 0x4e, enable?0x80:0x60, 0xe0); i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02); break; case SEN_OV7610: case SEN_OV76BE: case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: PDEBUG(5, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for set_backlight"); return -EINVAL; } ov->backlight = enable; return 0; } static inline int sensor_set_mirror(struct usb_ov511 *ov, int enable) { PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); switch (ov->sensor) { case SEN_OV6620: case SEN_OV6630: case SEN_OV7610: case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: i2c_w_mask(ov, 0x12, enable?0x40:0x00, 0x40); break; case SEN_KS0127: case SEN_KS0127B: case SEN_SAA7111A: PDEBUG(5, "Unsupported with this sensor"); return -EPERM; default: err("Sensor not supported for set_mirror"); return -EINVAL; } ov->mirror = enable; return 0; } /* Returns number of bits per pixel (regardless of where they are located; * planar or not), or zero for unsupported format. */ static inline int get_depth(int palette) { switch (palette) { case VIDEO_PALETTE_GREY: return 8; case VIDEO_PALETTE_YUV420: return 12; case VIDEO_PALETTE_YUV420P: return 12; /* Planar */ case VIDEO_PALETTE_RGB565: return 16; case VIDEO_PALETTE_RGB24: return 24; case VIDEO_PALETTE_YUV422: return 16; case VIDEO_PALETTE_YUYV: return 16; case VIDEO_PALETTE_YUV422P: return 16; /* Planar */ default: return 0; /* Invalid format */ } } /* Bytes per frame. Used by read(). Return of 0 indicates error */ static inline long int get_frame_length(struct ov511_frame *frame) { if (!frame) return 0; else return ((frame->width * frame->height * get_depth(frame->format)) >> 3); } static int mode_init_ov_sensor_regs(struct usb_ov511 *ov, int width, int height, int mode, int sub_flag, int qvga) { int clock; /******** Mode (VGA/QVGA) and sensor specific regs ********/ switch (ov->sensor) { case SEN_OV7610: i2c_w(ov, 0x14, qvga?0x24:0x04); // FIXME: Does this improve the image quality or frame rate? #if 0 i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); i2c_w(ov, 0x24, 0x10); i2c_w(ov, 0x25, qvga?0x40:0x8a); i2c_w(ov, 0x2f, qvga?0x30:0xb0); i2c_w(ov, 0x35, qvga?0x1c:0x9c); #endif break; case SEN_OV7620: // i2c_w(ov, 0x2b, 0x00); i2c_w(ov, 0x14, qvga?0xa4:0x84); i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); i2c_w(ov, 0x24, qvga?0x20:0x3a); i2c_w(ov, 0x25, qvga?0x30:0x60); i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40); i2c_w_mask(ov, 0x67, qvga?0xf0:0x90, 0xf0); i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20); break; case SEN_OV76BE: // i2c_w(ov, 0x2b, 0x00); i2c_w(ov, 0x14, qvga?0xa4:0x84); // FIXME: Enable this once 7620AE uses 7620 initial settings #if 0 i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); i2c_w(ov, 0x24, qvga?0x20:0x3a); i2c_w(ov, 0x25, qvga?0x30:0x60); i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40); i2c_w_mask(ov, 0x67, qvga?0xb0:0x90, 0xf0); i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20); #endif break; case SEN_OV6620: i2c_w(ov, 0x14, qvga?0x24:0x04); break; case SEN_OV6630: i2c_w(ov, 0x14, qvga?0xa0:0x80); break; default: err("Invalid sensor"); return -EINVAL; } /******** Palette-specific regs ********/ if (mode == VIDEO_PALETTE_GREY) { if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { /* these aren't valid on the OV6620/OV7620/6630? */ i2c_w_mask(ov, 0x0e, 0x40, 0x40); } if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518 && ov518_color) { i2c_w_mask(ov, 0x12, 0x00, 0x10); i2c_w_mask(ov, 0x13, 0x00, 0x20); } else { i2c_w_mask(ov, 0x13, 0x20, 0x20); } } else { if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { /* not valid on the OV6620/OV7620/6630? */ i2c_w_mask(ov, 0x0e, 0x00, 0x40); } /* The OV518 needs special treatment. Although both the OV518 * and the OV6630 support a 16-bit video bus, only the 8 bit Y * bus is actually used. The UV bus is tied to ground. * Therefore, the OV6630 needs to be in 8-bit multiplexed * output mode */ if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518 && ov518_color) { i2c_w_mask(ov, 0x12, 0x10, 0x10); i2c_w_mask(ov, 0x13, 0x20, 0x20); } else { i2c_w_mask(ov, 0x13, 0x00, 0x20); } } /******** Clock programming ********/ // FIXME: Test this with OV6630 /* The OV6620 needs special handling. This prevents the * severe banding that normally occurs */ if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) { /* Clock down */ i2c_w(ov, 0x2a, 0x04); if (ov->compress) { // clock = 0; /* This ensures the highest frame rate */ clock = 3; } else if (clockdiv == -1) { /* If user didn't override it */ clock = 3; /* Gives better exposure time */ } else { clock = clockdiv; } PDEBUG(4, "Setting clock divisor to %d", clock); i2c_w(ov, 0x11, clock); i2c_w(ov, 0x2a, 0x84); /* This next setting is critical. It seems to improve * the gain or the contrast. The "reserved" bits seem * to have some effect in this case. */ i2c_w(ov, 0x2d, 0x85); } else { if (ov->compress) { clock = 1; /* This ensures the highest frame rate */ } else if (clockdiv == -1) { /* If user didn't override it */ /* Calculate and set the clock divisor */ clock = ((sub_flag ? ov->subw * ov->subh : width * height) * (mode == VIDEO_PALETTE_GREY ? 2 : 3) / 2) / 66000; } else { clock = clockdiv; } PDEBUG(4, "Setting clock divisor to %d", clock); i2c_w(ov, 0x11, clock); } /******** Special Features ********/ if (framedrop >= 0) i2c_w(ov, 0x16, framedrop); /* Test Pattern */ i2c_w_mask(ov, 0x12, (testpat?0x02:0x00), 0x02); /* Enable auto white balance */ i2c_w_mask(ov, 0x12, 0x04, 0x04); // This will go away as soon as ov51x_mode_init_sensor_regs() // is fully tested. /* 7620/6620/6630? don't have register 0x35, so play it safe */ if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { if (width == 640 && height == 480) i2c_w(ov, 0x35, 0x9e); else i2c_w(ov, 0x35, 0x1e); } return 0; } static int set_ov_sensor_window(struct usb_ov511 *ov, int width, int height, int mode, int sub_flag) { int ret; int hwsbase, hwebase, vwsbase, vwebase, hwsize, vwsize; int hoffset, voffset, hwscale = 0, vwscale = 0; /* The different sensor ICs handle setting up of window differently. * IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!!! */ switch (ov->sensor) { case SEN_OV7610: case SEN_OV76BE: hwsbase = 0x38; hwebase = 0x3a; vwsbase = vwebase = 0x05; break; case SEN_OV6620: case SEN_OV6630: hwsbase = 0x38; hwebase = 0x3a; vwsbase = 0x05; vwebase = 0x06; break; case SEN_OV7620: hwsbase = 0x2f; /* From 7620.SET (spec is wrong) */ hwebase = 0x2f; vwsbase = vwebase = 0x05; break; default: err("Invalid sensor"); return -EINVAL; } if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) { /* Note: OV518(+) does downsample on its own) */ if ((width > 176 && height > 144) || ov->bclass == BCL_OV518) { /* CIF */ ret = mode_init_ov_sensor_regs(ov, width, height, mode, sub_flag, 0); if (ret < 0) return ret; hwscale = 1; vwscale = 1; /* The datasheet says 0; it's wrong */ hwsize = 352; vwsize = 288; } else if (width > 176 || height > 144) { err("Illegal dimensions"); return -EINVAL; } else { /* QCIF */ ret = mode_init_ov_sensor_regs(ov, width, height, mode, sub_flag, 1); if (ret < 0) return ret; hwsize = 176; vwsize = 144; } } else { if (width > 320 && height > 240) { /* VGA */ ret = mode_init_ov_sensor_regs(ov, width, height, mode, sub_flag, 0); if (ret < 0) return ret; hwscale = 2; vwscale = 1; hwsize = 640; vwsize = 480; } else if (width > 320 || height > 240) { err("Illegal dimensions"); return -EINVAL; } else { /* QVGA */ ret = mode_init_ov_sensor_regs(ov, width, height, mode, sub_flag, 1); if (ret < 0) return ret; hwscale = 1; hwsize = 320; vwsize = 240; } } /* Center the window */ hoffset = ((hwsize - width) / 2) >> hwscale; voffset = ((vwsize - height) / 2) >> vwscale; /* FIXME! - This needs to be changed to support 160x120 and 6620!!! */ if (sub_flag) { i2c_w(ov, 0x17, hwsbase+(ov->subx>>hwscale)); i2c_w(ov, 0x18, hwebase+((ov->subx+ov->subw)>>hwscale)); i2c_w(ov, 0x19, vwsbase+(ov->suby>>vwscale)); i2c_w(ov, 0x1a, vwebase+((ov->suby+ov->subh)>>vwscale)); } else { i2c_w(ov, 0x17, hwsbase + hoffset); i2c_w(ov, 0x18, hwebase + hoffset + (hwsize>>hwscale)); i2c_w(ov, 0x19, vwsbase + voffset); i2c_w(ov, 0x1a, vwebase + voffset + (vwsize>>vwscale)); } #ifdef OV511_DEBUG if (dump_sensor) dump_i2c_regs(ov); #endif return 0; } /* Set up the OV511/OV511+ with the given image parameters. * * Do not put any sensor-specific code in here (including I2C I/O functions) */ static int ov511_mode_init_regs(struct usb_ov511 *ov, int width, int height, int mode, int sub_flag) { int hsegs, vsegs; if (sub_flag) { width = ov->subw; height = ov->subh; } PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d", width, height, mode, sub_flag); // FIXME: This should be moved to a 7111a-specific function once // subcapture is dealt with properly if (ov->sensor == SEN_SAA7111A) { if (width == 320 && height == 240) { /* No need to do anything special */ } else if (width == 640 && height == 480) { /* Set the OV511 up as 320x480, but keep the * V4L resolution as 640x480 */ width = 320; } else { err("SAA7111A only allows 320x240 or 640x480"); return -EINVAL; } } /* Make sure width and height are a multiple of 8 */ if (width % 8 || height % 8) { err("Invalid size (%d, %d) (mode = %d)", width, height, mode); return -EINVAL; } if (width < ov->minwidth || height < ov->minheight) { err("Requested dimensions are too small"); return -EINVAL; } if (ov51x_stop(ov) < 0) return -EIO; if (mode == VIDEO_PALETTE_GREY) { reg_w(ov, R511_CAM_UV_EN, 0x00); reg_w(ov, R511_SNAP_UV_EN, 0x00); reg_w(ov, R511_SNAP_OPTS, 0x01); } else { reg_w(ov, R511_CAM_UV_EN, 0x01); reg_w(ov, R511_SNAP_UV_EN, 0x01); reg_w(ov, R511_SNAP_OPTS, 0x03); } /* Here I'm assuming that snapshot size == image size. * I hope that's always true. --claudio */ hsegs = (width >> 3) - 1; vsegs = (height >> 3) - 1; reg_w(ov, R511_CAM_PXCNT, hsegs); reg_w(ov, R511_CAM_LNCNT, vsegs); reg_w(ov, R511_CAM_PXDIV, 0x00); reg_w(ov, R511_CAM_LNDIV, 0x00); /* YUV420, low pass filter on */ reg_w(ov, R511_CAM_OPTS, 0x03); /* Snapshot additions */ reg_w(ov, R511_SNAP_PXCNT, hsegs); reg_w(ov, R511_SNAP_LNCNT, vsegs); reg_w(ov, R511_SNAP_PXDIV, 0x00); reg_w(ov, R511_SNAP_LNDIV, 0x00); if (ov->compress) { /* Enable Y and UV quantization and compression */ reg_w(ov, R511_COMP_EN, 0x07); reg_w(ov, R511_COMP_LUT_EN, 0x03); ov51x_reset(ov, OV511_RESET_OMNICE); } if (ov51x_restart(ov) < 0) return -EIO; return 0; } /* Sets up the OV518/OV518+ with the given image parameters * * OV518 needs a completely different approach, until we can figure out what * the individual registers do. Also, only 15 FPS is supported now. * * Do not put any sensor-specific code in here (including I2C I/O functions) */ static int ov518_mode_init_regs(struct usb_ov511 *ov, int width, int height, int mode, int sub_flag) { int hsegs, vsegs, hi_res; if (sub_flag) { width = ov->subw; height = ov->subh; } PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d", width, height, mode, sub_flag); if (width % 16 || height % 8) { err("Invalid size (%d, %d)", width, height); return -EINVAL; } if (width < ov->minwidth || height < ov->minheight) { err("Requested dimensions are too small"); return -EINVAL; } if (width >= 320 && height >= 240) { hi_res = 1; } else if (width >= 320 || height >= 240) { err("Invalid width/height combination (%d, %d)", width, height); return -EINVAL; } else { hi_res = 0; } if (ov51x_stop(ov) < 0) return -EIO; /******** Set the mode ********/ reg_w(ov, 0x2b, 0); reg_w(ov, 0x2c, 0); reg_w(ov, 0x2d, 0); reg_w(ov, 0x2e, 0); reg_w(ov, 0x3b, 0); reg_w(ov, 0x3c, 0); reg_w(ov, 0x3d, 0); reg_w(ov, 0x3e, 0); if (ov->bridge == BRG_OV518 && ov518_color) { /* OV518 needs U and V swapped */ i2c_w_mask(ov, 0x15, 0x00, 0x01); if (mode == VIDEO_PALETTE_GREY) { /* Set 16-bit input format (UV data are ignored) */ reg_w_mask(ov, 0x20, 0x00, 0x08); /* Set 8-bit (4:0:0) output format */ reg_w_mask(ov, 0x28, 0x00, 0xf0); reg_w_mask(ov, 0x38, 0x00, 0xf0); } else { /* Set 8-bit (YVYU) input format */ reg_w_mask(ov, 0x20, 0x08, 0x08); /* Set 12-bit (4:2:0) output format */ reg_w_mask(ov, 0x28, 0x80, 0xf0); reg_w_mask(ov, 0x38, 0x80, 0xf0); } } else { reg_w(ov, 0x28, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80); reg_w(ov, 0x38, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80); } hsegs = width / 16; vsegs = height / 4; reg_w(ov, 0x29, hsegs); reg_w(ov, 0x2a, vsegs); reg_w(ov, 0x39, hsegs); reg_w(ov, 0x3a, vsegs); /* Windows driver does this here; who knows why */ reg_w(ov, 0x2f, 0x80); /******** Set the framerate (to 15 FPS) ********/ /* Mode independent, but framerate dependent, regs */ reg_w(ov, 0x51, 0x02); /* Clock divider; lower==faster */ reg_w(ov, 0x22, 0x18); reg_w(ov, 0x23, 0xff); if (ov->bridge == BRG_OV518PLUS) reg_w(ov, 0x21, 0x19); else reg_w(ov, 0x71, 0x19); /* Compression-related? */ // FIXME: Sensor-specific /* Bit 5 is what matters here. Of course, it is "reserved" */ i2c_w(ov, 0x54, 0x23); reg_w(ov, 0x2f, 0x80); if (ov->bridge == BRG_OV518PLUS) { reg_w(ov, 0x24, 0x94); reg_w(ov, 0x25, 0x90); ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */ ov518_reg_w32(ov, 0xc6, 540, 2); /* 21ch */ ov518_reg_w32(ov, 0xc7, 540, 2); /* 21ch */ ov518_reg_w32(ov, 0xc8, 108, 2); /* 6ch */ ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */ ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */ ov518_reg_w32(ov, 0xcc, 2400, 2); /* 960h */ ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */ ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */ } else { reg_w(ov, 0x24, 0x9f); reg_w(ov, 0x25, 0x90); ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */ ov518_reg_w32(ov, 0xc6, 500, 2); /* 1f4h */ ov518_reg_w32(ov, 0xc7, 500, 2); /* 1f4h */ ov518_reg_w32(ov, 0xc8, 142, 2); /* 8eh */ ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */ ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */ ov518_reg_w32(ov, 0xcc, 2000, 2); /* 7d0h */ ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */ ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */ } reg_w(ov, 0x2f, 0x80); if (ov51x_restart(ov) < 0) return -EIO; /* Reset it just for good measure */ if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) return -EIO; return 0; } /* This is a wrapper around the OV511, OV518, and sensor specific functions */ static int mode_init_regs(struct usb_ov511 *ov, int width, int height, int mode, int sub_flag) { int rc = 0; if (!ov || !ov->dev) return -EFAULT; if (ov->bclass == BCL_OV518) { rc = ov518_mode_init_regs(ov, width, height, mode, sub_flag); } else { rc = ov511_mode_init_regs(ov, width, height, mode, sub_flag); } if (FATAL_ERROR(rc)) return rc; switch (ov->sensor) { case SEN_OV7610: case SEN_OV7620: case SEN_OV76BE: case SEN_OV8600: case SEN_OV6620: case SEN_OV6630: rc = set_ov_sensor_window(ov, width, height, mode, sub_flag); break; case SEN_KS0127: case SEN_KS0127B: err("KS0127-series decoders not supported yet"); rc = -EINVAL; break; case SEN_SAA7111A: // rc = mode_init_saa_sensor_regs(ov, width, height, mode, // sub_flag); PDEBUG(1, "SAA status = 0x%02X", i2c_r(ov, 0x1f)); break; default: err("Unknown sensor"); rc = -EINVAL; } if (FATAL_ERROR(rc)) return rc; /* Sensor-independent settings */ rc = sensor_set_auto_brightness(ov, ov->auto_brt); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_auto_exposure(ov, ov->auto_exp); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_banding_filter(ov, bandingfilter); if (FATAL_ERROR(rc)) return rc; if (ov->lightfreq) { rc = sensor_set_light_freq(ov, lightfreq); if (FATAL_ERROR(rc)) return rc; } rc = sensor_set_backlight(ov, ov->backlight); if (FATAL_ERROR(rc)) return rc; rc = sensor_set_mirror(ov, ov->mirror); if (FATAL_ERROR(rc)) return rc; return 0; } /* This sets the default image parameters. This is useful for apps that use * read() and do not set these. */ static int ov51x_set_default_params(struct usb_ov511 *ov) { int i; /* Set default sizes in case IOCTL (VIDIOCMCAPTURE) is not used * (using read() instead). */ for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].width = ov->maxwidth; ov->frame[i].height = ov->maxheight; ov->frame[i].bytes_read = 0; if (force_palette) ov->frame[i].format = force_palette; else ov->frame[i].format = VIDEO_PALETTE_RGB24; ov->frame[i].depth = get_depth(ov->frame[i].format); } PDEBUG(3, "%dx%d, %s", ov->maxwidth, ov->maxheight, symbolic(v4l1_plist, ov->frame[0].format)); /* Initialize to max width/height, YUV420 or RGB24 (if supported) */ if (mode_init_regs(ov, ov->maxwidth, ov->maxheight, ov->frame[0].format, 0) < 0) return -EINVAL; return 0; } /********************************************************************** * * Video decoder stuff * **********************************************************************/ /* Set analog input port of decoder */ static int decoder_set_input(struct usb_ov511 *ov, int input) { PDEBUG(4, "port %d", input); switch (ov->sensor) { case SEN_SAA7111A: { /* Select mode */ i2c_w_mask(ov, 0x02, input, 0x07); /* Bypass chrominance trap for modes 4..7 */ i2c_w_mask(ov, 0x09, (input > 3) ? 0x80:0x00, 0x80); break; } default: return -EINVAL; } return 0; } /* Get ASCII name of video input */ static int decoder_get_input_name(struct usb_ov511 *ov, int input, char *name) { switch (ov->sensor) { case SEN_SAA7111A: { if (input < 0 || input > 7) return -EINVAL; else if (input < 4) sprintf(name, "CVBS-%d", input); else // if (input < 8) sprintf(name, "S-Video-%d", input - 4); break; } default: sprintf(name, "%s", "Camera"); } return 0; } /* Set norm (NTSC, PAL, SECAM, AUTO) */ static int decoder_set_norm(struct usb_ov511 *ov, int norm) { PDEBUG(4, "%d", norm); switch (ov->sensor) { case SEN_SAA7111A: { int reg_8, reg_e; if (norm == VIDEO_MODE_NTSC) { reg_8 = 0x40; /* 60 Hz */ reg_e = 0x00; /* NTSC M / PAL BGHI */ } else if (norm == VIDEO_MODE_PAL) { reg_8 = 0x00; /* 50 Hz */ reg_e = 0x00; /* NTSC M / PAL BGHI */ } else if (norm == VIDEO_MODE_AUTO) { reg_8 = 0x80; /* Auto field detect */ reg_e = 0x00; /* NTSC M / PAL BGHI */ } else if (norm == VIDEO_MODE_SECAM) { reg_8 = 0x00; /* 50 Hz */ reg_e = 0x50; /* SECAM / PAL 4.43 */ } else { return -EINVAL; } i2c_w_mask(ov, 0x08, reg_8, 0xc0); i2c_w_mask(ov, 0x0e, reg_e, 0x70); break; } default: return -EINVAL; } return 0; } /********************************************************************** * * Color correction functions * **********************************************************************/ /* * Turn a YUV4:2:0 block into an RGB block * * Video4Linux seems to use the blue, green, red channel * order convention-- rgb[0] is blue, rgb[1] is green, rgb[2] is red. * * Color space conversion coefficients taken from the excellent * http://www.inforamp.net/~poynton/ColorFAQ.html * In his terminology, this is a CCIR 601.1 YCbCr -> RGB. * Y values are given for all 4 pixels, but the U (Pb) * and V (Pr) are assumed constant over the 2x2 block. * * To avoid floating point arithmetic, the color conversion * coefficients are scaled into 16.16 fixed-point integers. * They were determined as follows: * * double brightness = 1.0; (0->black; 1->full scale) * double saturation = 1.0; (0->greyscale; 1->full color) * double fixScale = brightness * 256 * 256; * int rvScale = (int)(1.402 * saturation * fixScale); * int guScale = (int)(-0.344136 * saturation * fixScale); * int gvScale = (int)(-0.714136 * saturation * fixScale); * int buScale = (int)(1.772 * saturation * fixScale); * int yScale = (int)(fixScale); */ /* LIMIT: convert a 16.16 fixed-point value to a byte, with clipping. */ #define LIMIT(x) ((x)>0xffffff?0xff: ((x)<=0xffff?0:((x)>>16))) static inline void move_420_block(int yTL, int yTR, int yBL, int yBR, int u, int v, int rowPixels, unsigned char * rgb, int bits) { const int rvScale = 91881; const int guScale = -22553; const int gvScale = -46801; const int buScale = 116129; const int yScale = 65536; int r, g, b; g = guScale * u + gvScale * v; if (force_rgb) { r = buScale * u; b = rvScale * v; } else { r = rvScale * v; b = buScale * u; } yTL *= yScale; yTR *= yScale; yBL *= yScale; yBR *= yScale; if (bits == 24) { /* Write out top two pixels */ rgb[0] = LIMIT(b+yTL); rgb[1] = LIMIT(g+yTL); rgb[2] = LIMIT(r+yTL); rgb[3] = LIMIT(b+yTR); rgb[4] = LIMIT(g+yTR); rgb[5] = LIMIT(r+yTR); /* Skip down to next line to write out bottom two pixels */ rgb += 3 * rowPixels; rgb[0] = LIMIT(b+yBL); rgb[1] = LIMIT(g+yBL); rgb[2] = LIMIT(r+yBL); rgb[3] = LIMIT(b+yBR); rgb[4] = LIMIT(g+yBR); rgb[5] = LIMIT(r+yBR); } else if (bits == 16) { /* Write out top two pixels */ rgb[0] = ((LIMIT(b+yTL) >> 3) & 0x1F) | ((LIMIT(g+yTL) << 3) & 0xE0); rgb[1] = ((LIMIT(g+yTL) >> 5) & 0x07) | (LIMIT(r+yTL) & 0xF8); rgb[2] = ((LIMIT(b+yTR) >> 3) & 0x1F) | ((LIMIT(g+yTR) << 3) & 0xE0); rgb[3] = ((LIMIT(g+yTR) >> 5) & 0x07) | (LIMIT(r+yTR) & 0xF8); /* Skip down to next line to write out bottom two pixels */ rgb += 2 * rowPixels; rgb[0] = ((LIMIT(b+yBL) >> 3) & 0x1F) | ((LIMIT(g+yBL) << 3) & 0xE0); rgb[1] = ((LIMIT(g+yBL) >> 5) & 0x07) | (LIMIT(r+yBL) & 0xF8); rgb[2] = ((LIMIT(b+yBR) >> 3) & 0x1F) | ((LIMIT(g+yBR) << 3) & 0xE0); rgb[3] = ((LIMIT(g+yBR) >> 5) & 0x07) | (LIMIT(r+yBR) & 0xF8); } } /********************************************************************** * * Raw data parsing * **********************************************************************/ /* Copies a 64-byte segment at pIn to an 8x8 block at pOut. The width of the * image at pOut is specified by w. */ static inline void make_8x8(unsigned char *pIn, unsigned char *pOut, int w) { unsigned char *pOut1 = pOut; int x, y; for (y = 0; y < 8; y++) { pOut1 = pOut; for (x = 0; x < 8; x++) { *pOut1++ = *pIn++; } pOut += w; } } /* * For RAW BW (YUV 4:0:0) images, data show up in 256 byte segments. * The segments represent 4 squares of 8x8 pixels as follows: * * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199 * 8 9 ... 15 72 73 ... 79 200 201 ... 207 * ... ... ... * 56 57 ... 63 120 121 ... 127 248 249 ... 255 * */ static void yuv400raw_to_yuv400p(struct ov511_frame *frame, unsigned char *pIn0, unsigned char *pOut0) { int x, y; unsigned char *pIn, *pOut, *pOutLine; /* Copy Y */ pIn = pIn0; pOutLine = pOut0; for (y = 0; y < frame->rawheight - 1; y += 8) { pOut = pOutLine; for (x = 0; x < frame->rawwidth - 1; x += 8) { make_8x8(pIn, pOut, frame->rawwidth); pIn += 64; pOut += 8; } pOutLine += 8 * frame->rawwidth; } } /* * For YUV 4:2:0 images, the data show up in 384 byte segments. * The first 64 bytes of each segment are U, the next 64 are V. The U and * V are arranged as follows: * * 0 1 ... 7 * 8 9 ... 15 * ... * 56 57 ... 63 * * U and V are shipped at half resolution (1 U,V sample -> one 2x2 block). * * The next 256 bytes are full resolution Y data and represent 4 squares * of 8x8 pixels as follows: * * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199 * 8 9 ... 15 72 73 ... 79 200 201 ... 207 * ... ... ... * 56 57 ... 63 120 121 ... 127 ... 248 249 ... 255 * * Note that the U and V data in one segment represent a 16 x 16 pixel * area, but the Y data represent a 32 x 8 pixel area. If the width is not an * even multiple of 32, the extra 8x8 blocks within a 32x8 block belong to the * next horizontal stripe. * * If dumppix module param is set, _parse_data just dumps the incoming segments, * verbatim, in order, into the frame. When used with vidcat -f ppm -s 640x480 * this puts the data on the standard output and can be analyzed with the * parseppm.c utility I wrote. That's a much faster way for figuring out how * these data are scrambled. */ /* Converts from raw, uncompressed segments at pIn0 to a YUV420P frame at pOut0. * * FIXME: Currently only handles width and height that are multiples of 16 */ static void yuv420raw_to_yuv420p(struct ov511_frame *frame, unsigned char *pIn0, unsigned char *pOut0) { int k, x, y; unsigned char *pIn, *pOut, *pOutLine; const unsigned int a = frame->rawwidth * frame->rawheight; const unsigned int w = frame->rawwidth / 2; /* Copy U and V */ pIn = pIn0; pOutLine = pOut0 + a; for (y = 0; y < frame->rawheight - 1; y += 16) { pOut = pOutLine; for (x = 0; x < frame->rawwidth - 1; x += 16) { make_8x8(pIn, pOut, w); make_8x8(pIn + 64, pOut + a/4, w); pIn += 384; pOut += 8; } pOutLine += 8 * w; } /* Copy Y */ pIn = pIn0 + 128; pOutLine = pOut0; k = 0; for (y = 0; y < frame->rawheight - 1; y += 8) { pOut = pOutLine; for (x = 0; x < frame->rawwidth - 1; x += 8) { make_8x8(pIn, pOut, frame->rawwidth); pIn += 64; pOut += 8; if ((++k) > 3) { k = 0; pIn += 128; } } pOutLine += 8 * frame->rawwidth; } } /* * fixFrameRGBoffset-- * My camera seems to return the red channel about 1 pixel * low, and the blue channel about 1 pixel high. After YUV->RGB * conversion, we can correct this easily. OSL 2/24/2000. */ static void fixFrameRGBoffset(struct ov511_frame *frame) { int x, y; int rowBytes = frame->width*3, w = frame->width; unsigned char *rgb = frame->data; const int shift = 1; /* Distance to shift pixels by, vertically */ /* Don't bother with little images */ if (frame->width < 400) return; /* This only works with RGB24 */ if (frame->format != VIDEO_PALETTE_RGB24) return; /* Shift red channel up */ for (y = shift; y < frame->height; y++) { int lp = (y-shift)*rowBytes; /* Previous line offset */ int lc = y*rowBytes; /* Current line offset */ for (x = 0; x < w; x++) rgb[lp+x*3+2] = rgb[lc+x*3+2]; /* Shift red up */ } /* Shift blue channel down */ for (y = frame->height-shift-1; y >= 0; y--) { int ln = (y + shift) * rowBytes; /* Next line offset */ int lc = y * rowBytes; /* Current line offset */ for (x = 0; x < w; x++) rgb[ln+x*3+0] = rgb[lc+x*3+0]; /* Shift blue down */ } } /********************************************************************** * * Decompression * **********************************************************************/ /* Chooses a decompression module, locks it, and sets ov->decomp_ops * accordingly. Returns -ENXIO if decompressor is not available, otherwise * returns 0 if no other error. */ static int request_decompressor(struct usb_ov511 *ov) { if (!ov) return -ENODEV; if (ov->decomp_ops) { err("ERROR: Decompressor already requested!"); return -EINVAL; } lock_kernel(); /* Try to get MMX, and fall back on no-MMX if necessary */ if (ov->bclass == BCL_OV511) { if (ov511_mmx_decomp_ops) { PDEBUG(3, "Using OV511 MMX decompressor"); ov->decomp_ops = ov511_mmx_decomp_ops; } else if (ov511_decomp_ops) { PDEBUG(3, "Using OV511 decompressor"); ov->decomp_ops = ov511_decomp_ops; } else { err("No decompressor available"); } } else if (ov->bclass == BCL_OV518) { if (ov518_mmx_decomp_ops) { PDEBUG(3, "Using OV518 MMX decompressor"); ov->decomp_ops = ov518_mmx_decomp_ops; } else if (ov518_decomp_ops) { PDEBUG(3, "Using OV518 decompressor"); ov->decomp_ops = ov518_decomp_ops; } else { err("No decompressor available"); } } else { err("Unknown bridge"); } if (ov->decomp_ops) { if (!ov->decomp_ops->owner) { ov->decomp_ops = NULL; unlock_kernel(); return -ENOSYS; } __MOD_INC_USE_COUNT(ov->decomp_ops->owner); unlock_kernel(); return 0; } else { unlock_kernel(); return -ENOSYS; } } /* Unlocks decompression module and nulls ov->decomp_ops. Safe to call even * if ov->decomp_ops is NULL. */ static void release_decompressor(struct usb_ov511 *ov) { int released = 0; /* Did we actually do anything? */ if (!ov) return; lock_kernel(); if (ov->decomp_ops && ov->decomp_ops->owner) { __MOD_DEC_USE_COUNT(ov->decomp_ops->owner); released = 1; } ov->decomp_ops = NULL; unlock_kernel(); if (released) PDEBUG(3, "Decompressor released"); } static void decompress(struct usb_ov511 *ov, struct ov511_frame *frame, unsigned char *pIn0, unsigned char *pOut0) { if (!ov->decomp_ops) if (request_decompressor(ov)) return; PDEBUG(4, "Decompressing %d bytes", frame->bytes_recvd); if (frame->format == VIDEO_PALETTE_GREY && ov->decomp_ops->decomp_400) { int ret = ov->decomp_ops->decomp_400( pIn0, pOut0, frame->compbuf, frame->rawwidth, frame->rawheight, frame->bytes_recvd); PDEBUG(4, "DEBUG: decomp_400 returned %d", ret); } else if (frame->format != VIDEO_PALETTE_GREY && ov->decomp_ops->decomp_420) { int ret = ov->decomp_ops->decomp_420( pIn0, pOut0, frame->compbuf, frame->rawwidth, frame->rawheight, frame->bytes_recvd); PDEBUG(4, "DEBUG: decomp_420 returned %d", ret); } else { err("Decompressor does not support this format"); } } /********************************************************************** * * Format conversion * **********************************************************************/ /* Converts from planar YUV420 to RGB24. */ static void yuv420p_to_rgb(struct ov511_frame *frame, unsigned char *pIn0, unsigned char *pOut0, int bits) { const int numpix = frame->width * frame->height; const int bytes = bits >> 3; int i, j, y00, y01, y10, y11, u, v; unsigned char *pY = pIn0; unsigned char *pU = pY + numpix; unsigned char *pV = pU + numpix / 4; unsigned char *pOut = pOut0; for (j = 0; j <= frame->height - 2; j += 2) { for (i = 0; i <= frame->width - 2; i += 2) { y00 = *pY; y01 = *(pY + 1); y10 = *(pY + frame->width); y11 = *(pY + frame->width + 1); u = (*pU++) - 128; v = (*pV++) - 128; move_420_block(y00, y01, y10, y11, u, v, frame->width, pOut, bits); pY += 2; pOut += 2 * bytes; } pY += frame->width; pOut += frame->width * bytes; } } /* Converts from planar YUV420 to YUV422 (YUYV). */ static void yuv420p_to_yuv422(struct ov511_frame *frame, unsigned char *pIn0, unsigned char *pOut0) { const int numpix = frame->width * frame->height; int i, j; unsigned char *pY = pIn0; unsigned char *pU = pY + numpix; unsigned char *pV = pU + numpix / 4; unsigned char *pOut = pOut0; for (i = 0; i < numpix; i++) { *pOut = *(pY + i); pOut += 2; } pOut = pOut0 + 1; for (j = 0; j <= frame->height - 2 ; j += 2) { for (i = 0; i <= frame->width - 2; i += 2) { int u = *pU++; int v = *pV++; *pOut = u; *(pOut+2) = v; *(pOut+frame->width*2) = u; *(pOut+frame->width*2+2) = v; pOut += 4; } pOut += (frame->width * 2); } } /* Converts pData from planar YUV420 to planar YUV422 **in place**. */ static void yuv420p_to_yuv422p(struct ov511_frame *frame, unsigned char *pData) { const int numpix = frame->width * frame->height; const int w = frame->width; int j; unsigned char *pIn, *pOut; /* Clear U and V */ memset(pData + numpix + numpix / 2, 127, numpix / 2); /* Convert V starting from beginning and working forward */ pIn = pData + numpix + numpix / 4; pOut = pData + numpix +numpix / 2; for (j = 0; j <= frame->height - 2; j += 2) { memmove(pOut, pIn, w/2); memmove(pOut + w/2, pIn, w/2); pIn += w/2; pOut += w; } /* Convert U, starting from end and working backward */ pIn = pData + numpix + numpix / 4; pOut = pData + numpix + numpix / 2; for (j = 0; j <= frame->height - 2; j += 2) { pIn -= w/2; pOut -= w; memmove(pOut, pIn, w/2); memmove(pOut + w/2, pIn, w/2); } } /* Fuses even and odd fields together, and doubles width. * INPUT: an odd field followed by an even field at pIn0, in YUV planar format * OUTPUT: a normal YUV planar image, with correct aspect ratio */ static void deinterlace(struct ov511_frame *frame, int rawformat, unsigned char *pIn0, unsigned char *pOut0) { const int fieldheight = frame->rawheight / 2; const int fieldpix = fieldheight * frame->rawwidth; const int w = frame->width; int x, y; unsigned char *pInEven, *pInOdd, *pOut; PDEBUG(5, "fieldheight=%d", fieldheight); if (frame->rawheight != frame->height) { err("invalid height"); return; } if ((frame->rawwidth * 2) != frame->width) { err("invalid width"); return; } /* Y */ pInOdd = pIn0; pInEven = pInOdd + fieldpix; pOut = pOut0; for (y = 0; y < fieldheight; y++) { for (x = 0; x < frame->rawwidth; x++) { *pOut = *pInEven; *(pOut+1) = *pInEven++; *(pOut+w) = *pInOdd; *(pOut+w+1) = *pInOdd++; pOut += 2; } pOut += w; } if (rawformat == RAWFMT_YUV420) { /* U */ pInOdd = pIn0 + fieldpix * 2; pInEven = pInOdd + fieldpix / 4; for (y = 0; y < fieldheight / 2; y++) { for (x = 0; x < frame->rawwidth / 2; x++) { *pOut = *pInEven; *(pOut+1) = *pInEven++; *(pOut+w/2) = *pInOdd; *(pOut+w/2+1) = *pInOdd++; pOut += 2; } pOut += w/2; } /* V */ pInOdd = pIn0 + fieldpix * 2 + fieldpix / 2; pInEven = pInOdd + fieldpix / 4; for (y = 0; y < fieldheight / 2; y++) { for (x = 0; x < frame->rawwidth / 2; x++) { *pOut = *pInEven; *(pOut+1) = *pInEven++; *(pOut+w/2) = *pInOdd; *(pOut+w/2+1) = *pInOdd++; pOut += 2; } pOut += w/2; } } } static void ov51x_postprocess_grey(struct usb_ov511 *ov, struct ov511_frame *frame) { /* Deinterlace frame, if necessary */ if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) { if (frame->compressed) decompress(ov, frame, frame->rawdata, frame->tempdata); else yuv400raw_to_yuv400p(frame, frame->rawdata, frame->tempdata); deinterlace(frame, RAWFMT_YUV400, frame->tempdata, frame->data); } else { if (frame->compressed) decompress(ov, frame, frame->rawdata, frame->data); else yuv400raw_to_yuv400p(frame, frame->rawdata, frame->data); } } /* Process raw YUV420 data into the format requested by the app. Conversion * between V4L formats is allowed. */ static void ov51x_postprocess_yuv420(struct usb_ov511 *ov, struct ov511_frame *frame) { /* Process frame->rawdata to frame->tempdata */ if (frame->compressed) decompress(ov, frame, frame->rawdata, frame->tempdata); else yuv420raw_to_yuv420p(frame, frame->rawdata, frame->tempdata); /* Deinterlace frame, if necessary */ if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) { memcpy(frame->rawdata, frame->tempdata, MAX_RAW_DATA_SIZE(frame->width, frame->height)); deinterlace(frame, RAWFMT_YUV420, frame->rawdata, frame->tempdata); } /* Frame should be (width x height) and not (rawwidth x rawheight) at * this point. */ /* Process frame->tempdata to frame->data */ switch (frame->format) { case VIDEO_PALETTE_RGB565: yuv420p_to_rgb(frame, frame->tempdata, frame->data, 16); break; case VIDEO_PALETTE_RGB24: yuv420p_to_rgb(frame, frame->tempdata, frame->data, 24); break; case VIDEO_PALETTE_YUV422: case VIDEO_PALETTE_YUYV: yuv420p_to_yuv422(frame, frame->tempdata, frame->data); break; case VIDEO_PALETTE_YUV420: case VIDEO_PALETTE_YUV420P: memcpy(frame->data, frame->tempdata, MAX_RAW_DATA_SIZE(frame->width, frame->height)); break; case VIDEO_PALETTE_YUV422P: /* Data is converted in place, so copy it in advance */ memcpy(frame->data, frame->tempdata, MAX_RAW_DATA_SIZE(frame->width, frame->height)); yuv420p_to_yuv422p(frame, frame->data); break; default: err("Cannot convert YUV420 to %s", symbolic(v4l1_plist, frame->format)); } if (fix_rgb_offset) fixFrameRGBoffset(frame); } /* Post-processes the specified frame. This consists of: * 1. Decompress frame, if necessary * 2. Deinterlace frame and scale to proper size, if necessary * 3. Convert from YUV planar to destination format, if necessary * 4. Fix the RGB offset, if necessary */ static void ov51x_postprocess(struct usb_ov511 *ov, struct ov511_frame *frame) { if (dumppix) { memset(frame->data, 0, MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)); PDEBUG(4, "Dumping %d bytes", frame->bytes_recvd); memcpy(frame->data, frame->rawdata, frame->bytes_recvd); } else { switch (frame->format) { case VIDEO_PALETTE_GREY: ov51x_postprocess_grey(ov, frame); break; case VIDEO_PALETTE_YUV420: case VIDEO_PALETTE_YUV420P: case VIDEO_PALETTE_RGB565: case VIDEO_PALETTE_RGB24: case VIDEO_PALETTE_YUV422: case VIDEO_PALETTE_YUYV: case VIDEO_PALETTE_YUV422P: ov51x_postprocess_yuv420(ov, frame); break; default: err("Cannot convert data to %s", symbolic(v4l1_plist, frame->format)); } } } /********************************************************************** * * OV51x data transfer, IRQ handler * **********************************************************************/ static inline void ov511_move_data(struct usb_ov511 *ov, unsigned char *in, int n) { int num, offset; int pnum = in[ov->packet_size - 1]; /* Get packet number */ int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight); struct ov511_frame *frame = &ov->frame[ov->curframe]; struct timeval *ts; /* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th * byte non-zero. The EOF packet has image width/height in the * 10th and 11th bytes. The 9th byte is given as follows: * * bit 7: EOF * 6: compression enabled * 5: 422/420/400 modes * 4: 422/420/400 modes * 3: 1 * 2: snapshot button on * 1: snapshot frame * 0: even/odd field */ if (printph) { info("ph(%3d): %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x", pnum, in[0], in[1], in[2], in[3], in[4], in[5], in[6], in[7], in[8], in[9], in[10], in[11]); } /* Check for SOF/EOF packet */ if ((in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) || (~in[8] & 0x08)) goto check_middle; /* Frame end */ if (in[8] & 0x80) { ts = (struct timeval *)(frame->data + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight)); do_gettimeofday(ts); /* Get the actual frame size from the EOF header */ frame->rawwidth = ((int)(in[9]) + 1) * 8; frame->rawheight = ((int)(in[10]) + 1) * 8; PDEBUG(4, "Frame end, frame=%d, pnum=%d, w=%d, h=%d, recvd=%d", ov->curframe, pnum, frame->rawwidth, frame->rawheight, frame->bytes_recvd); /* Validate the header data */ RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth); RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, ov->maxheight); /* Don't allow byte count to exceed buffer size */ RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw); if (frame->scanstate == STATE_LINES) { int nextf; frame->grabstate = FRAME_DONE; // FIXME: Is this right? if (waitqueue_active(&frame->wq)) { frame->grabstate = FRAME_DONE; wake_up_interruptible(&frame->wq); } /* If next frame is ready or grabbing, * point to it */ nextf = (ov->curframe + 1) % OV511_NUMFRAMES; if (ov->frame[nextf].grabstate == FRAME_READY || ov->frame[nextf].grabstate == FRAME_GRABBING) { ov->curframe = nextf; ov->frame[nextf].scanstate = STATE_SCANNING; } else { if (frame->grabstate == FRAME_DONE) { PDEBUG(4, "** Frame done **"); } else { PDEBUG(4, "Frame not ready? state = %d", ov->frame[nextf].grabstate); } ov->curframe = -1; } } else { PDEBUG(5, "Frame done, but not scanning"); } /* Image corruption caused by misplaced frame->segment = 0 * fixed by carlosf@conectiva.com.br */ } else { /* Frame start */ PDEBUG(4, "Frame start, framenum = %d", ov->curframe); /* Check to see if it's a snapshot frame */ /* FIXME?? Should the snapshot reset go here? Performance? */ if (in[8] & 0x02) { frame->snapshot = 1; PDEBUG(3, "snapshot detected"); } frame->scanstate = STATE_LINES; frame->bytes_recvd = 0; frame->compressed = in[8] & 0x40; } check_middle: /* Are we in a frame? */ if (frame->scanstate != STATE_LINES) { PDEBUG(5, "Not in a frame; packet skipped"); return; } /* If frame start, skip header */ if (frame->bytes_recvd == 0) offset = 9; else offset = 0; num = n - offset - 1; /* Dump all data exactly as received */ if (dumppix == 2) { frame->bytes_recvd += n - 1; if (frame->bytes_recvd <= max_raw) memcpy(frame->rawdata + frame->bytes_recvd - (n - 1), in, n - 1); else PDEBUG(3, "Raw data buffer overrun!! (%d)", frame->bytes_recvd - max_raw); } else if (!frame->compressed && !remove_zeros) { frame->bytes_recvd += num; if (frame->bytes_recvd <= max_raw) memcpy(frame->rawdata + frame->bytes_recvd - num, in + offset, num); else PDEBUG(3, "Raw data buffer overrun!! (%d)", frame->bytes_recvd - max_raw); } else { /* Remove all-zero FIFO lines (aligned 32-byte blocks) */ int b, read = 0, allzero, copied = 0; if (offset) { frame->bytes_recvd += 32 - offset; // Bytes out memcpy(frame->rawdata, in + offset, 32 - offset); read += 32; } while (read < n - 1) { allzero = 1; for (b = 0; b < 32; b++) { if (in[read + b]) { allzero = 0; break; } } if (allzero) { /* Don't copy it */ } else { if (frame->bytes_recvd + copied + 32 <= max_raw) { memcpy(frame->rawdata + frame->bytes_recvd + copied, in + read, 32); copied += 32; } else { PDEBUG(3, "Raw data buffer overrun!!"); } } read += 32; } frame->bytes_recvd += copied; } } static inline void ov518_move_data(struct usb_ov511 *ov, unsigned char *in, int n) { int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight); struct ov511_frame *frame = &ov->frame[ov->curframe]; struct timeval *ts; /* Don't copy the packet number byte */ if (ov->packet_numbering) --n; /* A false positive here is likely, until OVT gives me * the definitive SOF/EOF format */ if ((!(in[0] | in[1] | in[2] | in[3] | in[5])) && in[6]) { if (printph) { info("ph: %2x %2x %2x %2x %2x %2x %2x %2x", in[0], in[1], in[2], in[3], in[4], in[5], in[6], in[7]); } if (frame->scanstate == STATE_LINES) { PDEBUG(4, "Detected frame end/start"); goto eof; } else { //scanstate == STATE_SCANNING /* Frame start */ PDEBUG(4, "Frame start, framenum = %d", ov->curframe); goto sof; } } else { goto check_middle; } eof: ts = (struct timeval *)(frame->data + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight)); do_gettimeofday(ts); PDEBUG(4, "Frame end, curframe = %d, hw=%d, vw=%d, recvd=%d", ov->curframe, (int)(in[9]), (int)(in[10]), frame->bytes_recvd); // FIXME: Since we don't know the header formats yet, // there is no way to know what the actual image size is frame->rawwidth = frame->width; frame->rawheight = frame->height; /* Validate the header data */ RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth); RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, ov->maxheight); /* Don't allow byte count to exceed buffer size */ RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw); if (frame->scanstate == STATE_LINES) { int nextf; frame->grabstate = FRAME_DONE; // FIXME: Is this right? if (waitqueue_active(&frame->wq)) { frame->grabstate = FRAME_DONE; wake_up_interruptible(&frame->wq); } /* If next frame is ready or grabbing, * point to it */ nextf = (ov->curframe + 1) % OV511_NUMFRAMES; if (ov->frame[nextf].grabstate == FRAME_READY || ov->frame[nextf].grabstate == FRAME_GRABBING) { ov->curframe = nextf; ov->frame[nextf].scanstate = STATE_SCANNING; frame = &ov->frame[nextf]; } else { if (frame->grabstate == FRAME_DONE) { PDEBUG(4, "** Frame done **"); } else { PDEBUG(4, "Frame not ready? state = %d", ov->frame[nextf].grabstate); } ov->curframe = -1; PDEBUG(4, "SOF dropped (no active frame)"); return; /* Nowhere to store this frame */ } } sof: PDEBUG(4, "Starting capture on frame %d", frame->framenum); // Snapshot not reverse-engineered yet. #if 0 /* Check to see if it's a snapshot frame */ /* FIXME?? Should the snapshot reset go here? Performance? */ if (in[8] & 0x02) { frame->snapshot = 1; PDEBUG(3, "snapshot detected"); } #endif frame->scanstate = STATE_LINES; frame->bytes_recvd = 0; frame->compressed = 1; check_middle: /* Are we in a frame? */ if (frame->scanstate != STATE_LINES) { PDEBUG(4, "scanstate: no SOF yet"); return; } /* Dump all data exactly as received */ if (dumppix == 2) { frame->bytes_recvd += n; if (frame->bytes_recvd <= max_raw) memcpy(frame->rawdata + frame->bytes_recvd - n, in, n); else PDEBUG(3, "Raw data buffer overrun!! (%d)", frame->bytes_recvd - max_raw); } else { /* All incoming data are divided into 8-byte segments. If the * segment contains all zero bytes, it must be skipped. These * zero-segments allow the OV518 to mainain a constant data rate * regardless of the effectiveness of the compression. Segments * are aligned relative to the beginning of each isochronous * packet. The first segment in each image is a header (the * decompressor skips it later). */ int b, read = 0, allzero, copied = 0; while (read < n) { allzero = 1; for (b = 0; b < 8; b++) { if (in[read + b]) { allzero = 0; break; } } if (allzero) { /* Don't copy it */ } else { if (frame->bytes_recvd + copied + 8 <= max_raw) { memcpy(frame->rawdata + frame->bytes_recvd + copied, in + read, 8); copied += 8; } else { PDEBUG(3, "Raw data buffer overrun!!"); } } read += 8; } frame->bytes_recvd += copied; } } static void ov51x_isoc_irq(struct urb *urb) { int i; struct usb_ov511 *ov; struct ov511_sbuf *sbuf; if (!urb->context) { PDEBUG(4, "no context"); return; } sbuf = urb->context; ov = sbuf->ov; if (!ov || !ov->dev || !ov->user) { PDEBUG(4, "no device, or not open"); return; } if (!ov->streaming) { PDEBUG(4, "hmmm... not streaming, but got interrupt"); return; } if (urb->status == -ENOENT || urb->status == -ECONNRESET) { PDEBUG(4, "URB unlinked"); return; } if (urb->status != -EINPROGRESS && urb->status != 0) { err("ERROR: urb->status=%d: %s", urb->status, symbolic(urb_errlist, urb->status)); } /* Copy the data received into our frame buffer */ PDEBUG(5, "sbuf[%d]: Moving %d packets", sbuf->n, urb->number_of_packets); for (i = 0; i < urb->number_of_packets; i++) { /* Warning: Don't call *_move_data() if no frame active! */ if (ov->curframe >= 0) { int n = urb->iso_frame_desc[i].actual_length; int st = urb->iso_frame_desc[i].status; unsigned char *cdata; urb->iso_frame_desc[i].actual_length = 0; urb->iso_frame_desc[i].status = 0; cdata = urb->transfer_buffer + urb->iso_frame_desc[i].offset; if (!n) { PDEBUG(4, "Zero-length packet"); continue; } if (st) PDEBUG(2, "data error: [%d] len=%d, status=%d", i, n, st); if (ov->bclass == BCL_OV511) ov511_move_data(ov, cdata, n); else if (ov->bclass == BCL_OV518) ov518_move_data(ov, cdata, n); else err("Unknown bridge device (%d)", ov->bridge); } else if (waitqueue_active(&ov->wq)) { wake_up_interruptible(&ov->wq); } } /* Resubmit this URB */ urb->dev = ov->dev; if ((i = usb_submit_urb(urb)) != 0) err("usb_submit_urb() ret %d", i); return; } /**************************************************************************** * * Stream initialization and termination * ***************************************************************************/ static int ov51x_init_isoc(struct usb_ov511 *ov) { struct urb *urb; int fx, err, n, size; PDEBUG(3, "*** Initializing capture ***"); ov->curframe = -1; if (ov->bridge == BRG_OV511) { if (cams == 1) size = 993; else if (cams == 2) size = 513; else if (cams == 3 || cams == 4) size = 257; else { err("\"cams\" parameter too high!"); return -1; } } else if (ov->bridge == BRG_OV511PLUS) { if (cams == 1) size = 961; else if (cams == 2) size = 513; else if (cams == 3 || cams == 4) size = 257; else if (cams >= 5 && cams <= 8) size = 129; else if (cams >= 9 && cams <= 31) size = 33; else { err("\"cams\" parameter too high!"); return -1; } } else if (ov->bclass == BCL_OV518) { if (cams == 1) size = 896; else if (cams == 2) size = 512; else if (cams == 3 || cams == 4) size = 256; else if (cams >= 5 && cams <= 8) size = 128; else { err("\"cams\" parameter too high!"); return -1; } } else { err("invalid bridge type"); return -1; } // FIXME: OV518 is hardcoded to 15 FPS (alternate 5) for now if (ov->bclass == BCL_OV518) { if (packetsize == -1) { ov518_set_packet_size(ov, 640); } else { info("Forcing packet size to %d", packetsize); ov518_set_packet_size(ov, packetsize); } } else { if (packetsize == -1) { ov511_set_packet_size(ov, size); } else { info("Forcing packet size to %d", packetsize); ov511_set_packet_size(ov, packetsize); } } for (n = 0; n < OV511_NUMSBUF; n++) { urb = usb_alloc_urb(FRAMES_PER_DESC); if (!urb) { err("init isoc: usb_alloc_urb ret. NULL"); return -ENOMEM; } ov->sbuf[n].urb = urb; urb->dev = ov->dev; urb->context = &ov->sbuf[n]; urb->pipe = usb_rcvisocpipe(ov->dev, OV511_ENDPOINT_ADDRESS); urb->transfer_flags = USB_ISO_ASAP; urb->transfer_buffer = ov->sbuf[n].data; urb->complete = ov51x_isoc_irq; urb->number_of_packets = FRAMES_PER_DESC; urb->transfer_buffer_length = ov->packet_size * FRAMES_PER_DESC; urb->interval = 1; for (fx = 0; fx < FRAMES_PER_DESC; fx++) { urb->iso_frame_desc[fx].offset = ov->packet_size * fx; urb->iso_frame_desc[fx].length = ov->packet_size; } } ov->streaming = 1; for (n = 0; n < OV511_NUMSBUF; n++) { ov->sbuf[n].urb->dev = ov->dev; err = usb_submit_urb(ov->sbuf[n].urb); if (err) { err("init isoc: usb_submit_urb(%d) ret %d", n, err); return err; } } return 0; } static void ov51x_unlink_isoc(struct usb_ov511 *ov) { int n; /* Unschedule all of the iso td's */ for (n = OV511_NUMSBUF - 1; n >= 0; n--) { if (ov->sbuf[n].urb) { usb_unlink_urb(ov->sbuf[n].urb); usb_free_urb(ov->sbuf[n].urb); ov->sbuf[n].urb = NULL; } } } static void ov51x_stop_isoc(struct usb_ov511 *ov) { if (!ov->streaming || !ov->dev) return; PDEBUG(3, "*** Stopping capture ***"); if (ov->bclass == BCL_OV518) ov518_set_packet_size(ov, 0); else ov511_set_packet_size(ov, 0); ov->streaming = 0; ov51x_unlink_isoc(ov); } static int ov51x_new_frame(struct usb_ov511 *ov, int framenum) { struct ov511_frame *frame; int newnum; PDEBUG(4, "ov->curframe = %d, framenum = %d", ov->curframe, framenum); if (!ov->dev) return -1; /* If we're not grabbing a frame right now and the other frame is */ /* ready to be grabbed into, then use it instead */ if (ov->curframe == -1) { newnum = (framenum - 1 + OV511_NUMFRAMES) % OV511_NUMFRAMES; if (ov->frame[newnum].grabstate == FRAME_READY) framenum = newnum; } else return 0; frame = &ov->frame[framenum]; PDEBUG(4, "framenum = %d, width = %d, height = %d", framenum, frame->width, frame->height); frame->grabstate = FRAME_GRABBING; frame->scanstate = STATE_SCANNING; frame->snapshot = 0; ov->curframe = framenum; /* Make sure it's not too big */ if (frame->width > ov->maxwidth) frame->width = ov->maxwidth; frame->width &= ~7L; /* Multiple of 8 */ if (frame->height > ov->maxheight) frame->height = ov->maxheight; frame->height &= ~3L; /* Multiple of 4 */ return 0; } /**************************************************************************** * * Buffer management * ***************************************************************************/ /* * - You must acquire buf_lock before entering this function. * - Because this code will free any non-null pointer, you must be sure to null * them if you explicitly free them somewhere else! */ static void ov51x_do_dealloc(struct usb_ov511 *ov) { int i; PDEBUG(4, "entered"); if (ov->fbuf) { rvfree(ov->fbuf, OV511_NUMFRAMES * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)); ov->fbuf = NULL; } if (ov->rawfbuf) { vfree(ov->rawfbuf); ov->rawfbuf = NULL; } if (ov->tempfbuf) { vfree(ov->tempfbuf); ov->tempfbuf = NULL; } for (i = 0; i < OV511_NUMSBUF; i++) { if (ov->sbuf[i].data) { kfree(ov->sbuf[i].data); ov->sbuf[i].data = NULL; } } for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].data = NULL; ov->frame[i].rawdata = NULL; ov->frame[i].tempdata = NULL; if (ov->frame[i].compbuf) { free_page((unsigned long) ov->frame[i].compbuf); ov->frame[i].compbuf = NULL; } } PDEBUG(4, "buffer memory deallocated"); ov->buf_state = BUF_NOT_ALLOCATED; PDEBUG(4, "leaving"); } static int ov51x_alloc(struct usb_ov511 *ov) { int i; const int w = ov->maxwidth; const int h = ov->maxheight; const int data_bufsize = OV511_NUMFRAMES * MAX_DATA_SIZE(w, h); const int raw_bufsize = OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h); PDEBUG(4, "entered"); down(&ov->buf_lock); if (ov->buf_state == BUF_ALLOCATED) goto out; ov->fbuf = rvmalloc(data_bufsize); if (!ov->fbuf) goto error; ov->rawfbuf = vmalloc(raw_bufsize); if (!ov->rawfbuf) goto error; memset(ov->rawfbuf, 0, raw_bufsize); ov->tempfbuf = vmalloc(raw_bufsize); if (!ov->tempfbuf) goto error; memset(ov->tempfbuf, 0, raw_bufsize); for (i = 0; i < OV511_NUMSBUF; i++) { ov->sbuf[i].data = kmalloc(FRAMES_PER_DESC * MAX_FRAME_SIZE_PER_DESC, GFP_KERNEL); if (!ov->sbuf[i].data) goto error; PDEBUG(4, "sbuf[%d] @ %p", i, ov->sbuf[i].data); } for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].data = ov->fbuf + i * MAX_DATA_SIZE(w, h); ov->frame[i].rawdata = ov->rawfbuf + i * MAX_RAW_DATA_SIZE(w, h); ov->frame[i].tempdata = ov->tempfbuf + i * MAX_RAW_DATA_SIZE(w, h); ov->frame[i].compbuf = (unsigned char *) __get_free_page(GFP_KERNEL); if (!ov->frame[i].compbuf) goto error; PDEBUG(4, "frame[%d] @ %p", i, ov->frame[i].data); } ov->buf_state = BUF_ALLOCATED; out: up(&ov->buf_lock); PDEBUG(4, "leaving"); return 0; error: ov51x_do_dealloc(ov); up(&ov->buf_lock); PDEBUG(4, "errored"); return -ENOMEM; } static void ov51x_dealloc(struct usb_ov511 *ov, int now) { PDEBUG(4, "entered"); down(&ov->buf_lock); ov51x_do_dealloc(ov); up(&ov->buf_lock); PDEBUG(4, "leaving"); } /**************************************************************************** * * V4L 1 API * ***************************************************************************/ static int ov51x_v4l1_open(struct inode *inode, struct file *file) { struct video_device *vdev = video_devdata(file); struct usb_ov511 *ov = vdev->priv; int err, i; PDEBUG(4, "opening"); down(&ov->lock); err = -EBUSY; if (ov->user) goto out; err = ov51x_alloc(ov); if (err < 0) goto out; ov->sub_flag = 0; /* In case app doesn't set them... */ err = ov51x_set_default_params(ov); if (err < 0) goto out; /* Make sure frames are reset */ for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].grabstate = FRAME_UNUSED; ov->frame[i].bytes_read = 0; } /* If compression is on, make sure now that a * decompressor can be loaded */ if (ov->compress && !ov->decomp_ops) { err = request_decompressor(ov); if (err && !dumppix) goto out; } err = ov51x_init_isoc(ov); if (err) { ov51x_dealloc(ov, 0); goto out; } ov->user++; file->private_data = vdev; if (ov->led_policy == LED_AUTO) ov51x_led_control(ov, 1); out: up(&ov->lock); return err; } static int ov51x_v4l1_close(struct inode *inode, struct file *file) { struct video_device *vdev = file->private_data; struct usb_ov511 *ov = vdev->priv; PDEBUG(4, "ov511_close"); down(&ov->lock); ov->user--; ov51x_stop_isoc(ov); release_decompressor(ov); if (ov->led_policy == LED_AUTO) ov51x_led_control(ov, 0); if (ov->dev) ov51x_dealloc(ov, 0); up(&ov->lock); /* Device unplugged while open. Only a minimum of unregistration is done * here; the disconnect callback already did the rest. */ if (!ov->dev) { down(&ov->cbuf_lock); kfree(ov->cbuf); ov->cbuf = NULL; up(&ov->cbuf_lock); ov51x_dealloc(ov, 1); kfree(ov); ov = NULL; } file->private_data = NULL; return 0; } /* Do not call this function directly! */ static int ov51x_v4l1_ioctl_internal(struct inode *inode, struct file *file, unsigned int cmd, void *arg) { struct video_device *vdev = file->private_data; struct usb_ov511 *ov = vdev->priv; PDEBUG(5, "IOCtl: 0x%X", cmd); if (!ov->dev) return -EIO; switch (cmd) { case VIDIOCGCAP: { struct video_capability *b = arg; PDEBUG(4, "VIDIOCGCAP"); memset(b, 0, sizeof(struct video_capability)); sprintf(b->name, "%s USB Camera", symbolic(brglist, ov->bridge)); b->type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE; b->channels = ov->num_inputs; b->audios = 0; b->maxwidth = ov->maxwidth; b->maxheight = ov->maxheight; b->minwidth = ov->minwidth; b->minheight = ov->minheight; return 0; } case VIDIOCGCHAN: { struct video_channel *v = arg; PDEBUG(4, "VIDIOCGCHAN"); if ((unsigned)(v->channel) >= ov->num_inputs) { err("Invalid channel (%d)", v->channel); return -EINVAL; } v->norm = ov->norm; v->type = VIDEO_TYPE_CAMERA; v->flags = 0; // v->flags |= (ov->has_decoder) ? VIDEO_VC_NORM : 0; v->tuners = 0; decoder_get_input_name(ov, v->channel, v->name); return 0; } case VIDIOCSCHAN: { struct video_channel *v = arg; int err; PDEBUG(4, "VIDIOCSCHAN"); /* Make sure it's not a camera */ if (!ov->has_decoder) { if (v->channel == 0) return 0; else return -EINVAL; } if (v->norm != VIDEO_MODE_PAL && v->norm != VIDEO_MODE_NTSC && v->norm != VIDEO_MODE_SECAM && v->norm != VIDEO_MODE_AUTO) { err("Invalid norm (%d)", v->norm); return -EINVAL; } if ((unsigned)(v->channel) >= ov->num_inputs) { err("Invalid channel (%d)", v->channel); return -EINVAL; } err = decoder_set_input(ov, v->channel); if (err) return err; err = decoder_set_norm(ov, v->norm); if (err) return err; return 0; } case VIDIOCGPICT: { struct video_picture *p = arg; PDEBUG(4, "VIDIOCGPICT"); memset(p, 0, sizeof(struct video_picture)); if (sensor_get_picture(ov, p)) return -EIO; /* Can we get these from frame[0]? -claudio? */ p->depth = ov->frame[0].depth; p->palette = ov->frame[0].format; return 0; } case VIDIOCSPICT: { struct video_picture *p = arg; int i; PDEBUG(4, "VIDIOCSPICT"); if (!get_depth(p->palette)) return -EINVAL; if (sensor_set_picture(ov, p)) return -EIO; if (force_palette && p->palette != force_palette) { info("Palette rejected (%s)", symbolic(v4l1_plist, p->palette)); return -EINVAL; } // FIXME: Format should be independent of frames if (p->palette != ov->frame[0].format) { PDEBUG(4, "Detected format change"); /* If we're collecting previous frame wait before changing modes */ interruptible_sleep_on(&ov->wq); if (signal_pending(current)) return -EINTR; mode_init_regs(ov, ov->frame[0].width, ov->frame[0].height, p->palette, ov->sub_flag); } PDEBUG(4, "Setting depth=%d, palette=%s", p->depth, symbolic(v4l1_plist, p->palette)); for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].depth = p->depth; ov->frame[i].format = p->palette; } return 0; } case VIDIOCGCAPTURE: { int *vf = arg; PDEBUG(4, "VIDIOCGCAPTURE"); ov->sub_flag = *vf; return 0; } case VIDIOCSCAPTURE: { struct video_capture *vc = arg; PDEBUG(4, "VIDIOCSCAPTURE"); if (vc->flags) return -EINVAL; if (vc->decimation) return -EINVAL; vc->x &= ~3L; vc->y &= ~1L; vc->y &= ~31L; if (vc->width == 0) vc->width = 32; vc->height /= 16; vc->height *= 16; if (vc->height == 0) vc->height = 16; ov->subx = vc->x; ov->suby = vc->y; ov->subw = vc->width; ov->subh = vc->height; return 0; } case VIDIOCSWIN: { struct video_window *vw = arg; int i, result; PDEBUG(4, "VIDIOCSWIN: %dx%d", vw->width, vw->height); #if 0 if (vw->flags) return -EINVAL; if (vw->clipcount) return -EINVAL; if (vw->height != ov->maxheight) return -EINVAL; if (vw->width != ov->maxwidth) return -EINVAL; #endif /* If we're collecting previous frame wait before changing modes */ interruptible_sleep_on(&ov->wq); if (signal_pending(current)) return -EINTR; result = mode_init_regs(ov, vw->width, vw->height, ov->frame[0].format, ov->sub_flag); if (result < 0) return result; for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].width = vw->width; ov->frame[i].height = vw->height; } return 0; } case VIDIOCGWIN: { struct video_window *vw = arg; memset(vw, 0, sizeof(struct video_window)); vw->x = 0; /* FIXME */ vw->y = 0; vw->width = ov->frame[0].width; vw->height = ov->frame[0].height; vw->flags = 30; PDEBUG(4, "VIDIOCGWIN: %dx%d", vw->width, vw->height); return 0; } case VIDIOCGMBUF: { struct video_mbuf *vm = arg; int i; PDEBUG(4, "VIDIOCGMBUF"); memset(vm, 0, sizeof(struct video_mbuf)); vm->size = OV511_NUMFRAMES * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight); vm->frames = OV511_NUMFRAMES; vm->offsets[0] = 0; for (i = 1; i < OV511_NUMFRAMES; i++) { vm->offsets[i] = vm->offsets[i-1] + MAX_DATA_SIZE(ov->maxwidth, ov->maxheight); } return 0; } case VIDIOCMCAPTURE: { struct video_mmap *vm = arg; int ret, depth; unsigned int f = vm->frame; PDEBUG(4, "VIDIOCMCAPTURE: frame: %d, %dx%d, %s", f, vm->width, vm->height, symbolic(v4l1_plist, vm->format)); depth = get_depth(vm->format); if (!depth) { PDEBUG(2, "VIDIOCMCAPTURE: invalid format (%s)", symbolic(v4l1_plist, vm->format)); return -EINVAL; } if (f >= OV511_NUMFRAMES) { err("VIDIOCMCAPTURE: invalid frame (%d)", f); return -EINVAL; } if (vm->width > ov->maxwidth || vm->height > ov->maxheight) { err("VIDIOCMCAPTURE: requested dimensions too big"); return -EINVAL; } if (ov->frame[f].grabstate == FRAME_GRABBING) { PDEBUG(4, "VIDIOCMCAPTURE: already grabbing"); return -EBUSY; } if (force_palette && (vm->format != force_palette)) { PDEBUG(2, "palette rejected (%s)", symbolic(v4l1_plist, vm->format)); return -EINVAL; } if ((ov->frame[f].width != vm->width) || (ov->frame[f].height != vm->height) || (ov->frame[f].format != vm->format) || (ov->frame[f].sub_flag != ov->sub_flag) || (ov->frame[f].depth != depth)) { PDEBUG(4, "VIDIOCMCAPTURE: change in image parameters"); /* If we're collecting previous frame wait before changing modes */ interruptible_sleep_on(&ov->wq); if (signal_pending(current)) return -EINTR; ret = mode_init_regs(ov, vm->width, vm->height, vm->format, ov->sub_flag); #if 0 if (ret < 0) { PDEBUG(1, "Got error while initializing regs "); return ret; } #endif ov->frame[f].width = vm->width; ov->frame[f].height = vm->height; ov->frame[f].format = vm->format; ov->frame[f].sub_flag = ov->sub_flag; ov->frame[f].depth = depth; } /* Mark it as ready */ ov->frame[f].grabstate = FRAME_READY; PDEBUG(4, "VIDIOCMCAPTURE: renewing frame %d", f); return ov51x_new_frame(ov, f); } case VIDIOCSYNC: { unsigned int fnum = *((unsigned int *) arg); struct ov511_frame *frame; int rc; if (fnum >= OV511_NUMFRAMES) { err("VIDIOCSYNC: invalid frame (%d)", fnum); return -EINVAL; } frame = &ov->frame[fnum]; PDEBUG(4, "syncing to frame %d, grabstate = %d", fnum, frame->grabstate); switch (frame->grabstate) { case FRAME_UNUSED: return -EINVAL; case FRAME_READY: case FRAME_GRABBING: case FRAME_ERROR: redo: if (!ov->dev) return -EIO; rc = wait_event_interruptible(frame->wq, (frame->grabstate == FRAME_DONE) || (frame->grabstate == FRAME_ERROR)); if (rc) return rc; if (frame->grabstate == FRAME_ERROR) { int ret; if ((ret = ov51x_new_frame(ov, fnum)) < 0) return ret; goto redo; } /* Fall through */ case FRAME_DONE: if (ov->snap_enabled && !frame->snapshot) { int ret; if ((ret = ov51x_new_frame(ov, fnum)) < 0) return ret; goto redo; } frame->grabstate = FRAME_UNUSED; /* Reset the hardware snapshot button */ /* FIXME - Is this the best place for this? */ if ((ov->snap_enabled) && (frame->snapshot)) { frame->snapshot = 0; ov51x_clear_snapshot(ov); } /* Decompression, format conversion, etc... */ ov51x_postprocess(ov, frame); break; } /* end switch */ return 0; } case VIDIOCGFBUF: { struct video_buffer *vb = arg; PDEBUG(4, "VIDIOCGFBUF"); memset(vb, 0, sizeof(struct video_buffer)); return 0; } case VIDIOCGUNIT: { struct video_unit *vu = arg; PDEBUG(4, "VIDIOCGUNIT"); memset(vu, 0, sizeof(struct video_unit)); vu->video = ov->vdev.minor; vu->vbi = VIDEO_NO_UNIT; vu->radio = VIDEO_NO_UNIT; vu->audio = VIDEO_NO_UNIT; vu->teletext = VIDEO_NO_UNIT; return 0; } case OV511IOC_WI2C: { struct ov511_i2c_struct *w = arg; return i2c_w_slave(ov, w->slave, w->reg, w->value, w->mask); } case OV511IOC_RI2C: { struct ov511_i2c_struct *r = arg; int rc; rc = i2c_r_slave(ov, r->slave, r->reg); if (rc < 0) return rc; r->value = rc; return 0; } default: PDEBUG(3, "Unsupported IOCtl: 0x%X", cmd); return -ENOIOCTLCMD; } /* end switch */ return 0; } static int ov51x_v4l1_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct video_device *vdev = file->private_data; struct usb_ov511 *ov = vdev->priv; int rc; if (down_interruptible(&ov->lock)) return -EINTR; rc = video_usercopy(inode, file, cmd, arg, ov51x_v4l1_ioctl_internal); up(&ov->lock); return rc; } static int ov51x_v4l1_read(struct file *file, char *buf, size_t cnt, loff_t *ppos) { struct video_device *vdev = file->private_data; int noblock = file->f_flags&O_NONBLOCK; unsigned long count = cnt; struct usb_ov511 *ov = vdev->priv; int i, rc = 0, frmx = -1; struct ov511_frame *frame; if (down_interruptible(&ov->lock)) return -EINTR; PDEBUG(4, "%ld bytes, noblock=%d", count, noblock); if (!vdev || !buf) { rc = -EFAULT; goto error; } if (!ov->dev) { rc = -EIO; goto error; } // FIXME: Only supports two frames /* See if a frame is completed, then use it. */ if (ov->frame[0].grabstate >= FRAME_DONE) /* _DONE or _ERROR */ frmx = 0; else if (ov->frame[1].grabstate >= FRAME_DONE)/* _DONE or _ERROR */ frmx = 1; /* If nonblocking we return immediately */ if (noblock && (frmx == -1)) { rc = -EAGAIN; goto error; } /* If no FRAME_DONE, look for a FRAME_GRABBING state. */ /* See if a frame is in process (grabbing), then use it. */ if (frmx == -1) { if (ov->frame[0].grabstate == FRAME_GRABBING) frmx = 0; else if (ov->frame[1].grabstate == FRAME_GRABBING) frmx = 1; } /* If no frame is active, start one. */ if (frmx == -1) { if ((rc = ov51x_new_frame(ov, frmx = 0))) { err("read: ov51x_new_frame error"); goto error; } } frame = &ov->frame[frmx]; restart: if (!ov->dev) { rc = -EIO; goto error; } /* Wait while we're grabbing the image */ PDEBUG(4, "Waiting image grabbing"); rc = wait_event_interruptible(frame->wq, (frame->grabstate == FRAME_DONE) || (frame->grabstate == FRAME_ERROR)); if (rc) goto error; PDEBUG(4, "Got image, frame->grabstate = %d", frame->grabstate); PDEBUG(4, "bytes_recvd = %d", frame->bytes_recvd); if (frame->grabstate == FRAME_ERROR) { frame->bytes_read = 0; err("** ick! ** Errored frame %d", ov->curframe); if (ov51x_new_frame(ov, frmx)) { err("read: ov51x_new_frame error"); goto error; } goto restart; } /* Repeat until we get a snapshot frame */ if (ov->snap_enabled) PDEBUG(4, "Waiting snapshot frame"); if (ov->snap_enabled && !frame->snapshot) { frame->bytes_read = 0; if ((rc = ov51x_new_frame(ov, frmx))) { err("read: ov51x_new_frame error"); goto error; } goto restart; } /* Clear the snapshot */ if (ov->snap_enabled && frame->snapshot) { frame->snapshot = 0; ov51x_clear_snapshot(ov); } /* Decompression, format conversion, etc... */ ov51x_postprocess(ov, frame); PDEBUG(4, "frmx=%d, bytes_read=%ld, length=%ld", frmx, frame->bytes_read, get_frame_length(frame)); /* copy bytes to user space; we allow for partials reads */ // if ((count + frame->bytes_read) // > get_frame_length((struct ov511_frame *)frame)) // count = frame->scanlength - frame->bytes_read; /* FIXME - count hardwired to be one frame... */ count = get_frame_length(frame); PDEBUG(4, "Copy to user space: %ld bytes", count); if ((i = copy_to_user(buf, frame->data + frame->bytes_read, count))) { PDEBUG(4, "Copy failed! %d bytes not copied", i); rc = -EFAULT; goto error; } frame->bytes_read += count; PDEBUG(4, "{copy} count used=%ld, new bytes_read=%ld", count, frame->bytes_read); /* If all data have been read... */ if (frame->bytes_read >= get_frame_length(frame)) { frame->bytes_read = 0; // FIXME: Only supports two frames /* Mark it as available to be used again. */ ov->frame[frmx].grabstate = FRAME_UNUSED; if ((rc = ov51x_new_frame(ov, !frmx))) { err("ov51x_new_frame returned error"); goto error; } } PDEBUG(4, "read finished, returning %ld (sweet)", count); up(&ov->lock); return count; error: up(&ov->lock); return rc; } static int ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma) { struct video_device *vdev = file->private_data; unsigned long start = vma->vm_start; unsigned long size = vma->vm_end - vma->vm_start; struct usb_ov511 *ov = vdev->priv; unsigned long page, pos; if (ov->dev == NULL) return -EIO; PDEBUG(4, "mmap: %ld (%lX) bytes", size, size); if (size > (((OV511_NUMFRAMES * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)))) return -EINVAL; if (down_interruptible(&ov->lock)) return -EINTR; pos = (unsigned long)ov->fbuf; while (size > 0) { page = kvirt_to_pa(pos); if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) { up(&ov->lock); return -EAGAIN; } start += PAGE_SIZE; pos += PAGE_SIZE; if (size > PAGE_SIZE) size -= PAGE_SIZE; else size = 0; } up(&ov->lock); return 0; } static struct file_operations ov511_fops = { .owner = THIS_MODULE, .open = ov51x_v4l1_open, .release = ov51x_v4l1_close, .read = ov51x_v4l1_read, .mmap = ov51x_v4l1_mmap, .ioctl = ov51x_v4l1_ioctl, .llseek = no_llseek, }; static struct video_device vdev_template = { .owner = THIS_MODULE, .name = "OV511 USB Camera", .type = VID_TYPE_CAPTURE, .hardware = VID_HARDWARE_OV511, .fops = &ov511_fops, }; #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) static int ov51x_control_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long ularg) { struct proc_dir_entry *pde = inode->u.generic_ip; struct usb_ov511 *ov; void *arg = (void *) ularg; int rc; if (!pde) return -ENOENT; ov = pde->data; if (!ov) return -ENODEV; if (!ov->dev) return -EIO; /* Should we pass through standard V4L IOCTLs? */ switch (cmd) { case OV511IOC_GINTVER: { int ver = OV511_INTERFACE_VER; PDEBUG(4, "Get interface version: %d", ver); if (copy_to_user(arg, &ver, sizeof(ver))) return -EFAULT; return 0; } case OV511IOC_GUSHORT: { struct ov511_ushort_opt opt; if (copy_from_user(&opt, arg, sizeof(opt))) return -EFAULT; switch (opt.optnum) { case OV511_USOPT_BRIGHT: rc = sensor_get_brightness(ov, &(opt.val)); if (rc) return rc; break; case OV511_USOPT_SAT: rc = sensor_get_saturation(ov, &(opt.val)); if (rc) return rc; break; case OV511_USOPT_HUE: rc = sensor_get_hue(ov, &(opt.val)); if (rc) return rc; break; case OV511_USOPT_CONTRAST: rc = sensor_get_contrast(ov, &(opt.val)); if (rc) return rc; break; default: err("Invalid get short option number"); return -EINVAL; } if (copy_to_user(arg, &opt, sizeof(opt))) return -EFAULT; return 0; } case OV511IOC_SUSHORT: { struct ov511_ushort_opt opt; if (copy_from_user(&opt, arg, sizeof(opt))) return -EFAULT; switch (opt.optnum) { case OV511_USOPT_BRIGHT: rc = sensor_set_brightness(ov, opt.val); if (rc) return rc; break; case OV511_USOPT_SAT: rc = sensor_set_saturation(ov, opt.val); if (rc) return rc; break; case OV511_USOPT_HUE: rc = sensor_set_hue(ov, opt.val); if (rc) return rc; break; case OV511_USOPT_CONTRAST: rc = sensor_set_contrast(ov, opt.val); if (rc) return rc; break; default: err("Invalid set short option number"); return -EINVAL; } return 0; } case OV511IOC_GUINT: { struct ov511_uint_opt opt; if (copy_from_user(&opt, arg, sizeof(opt))) return -EFAULT; switch (opt.optnum) { case OV511_UIOPT_POWER_FREQ: opt.val = ov->lightfreq; break; case OV511_UIOPT_BFILTER: opt.val = ov->bandfilt; break; case OV511_UIOPT_LED: opt.val = ov->led_policy; break; case OV511_UIOPT_DEBUG: opt.val = debug; break; case OV511_UIOPT_COMPRESS: opt.val = ov->compress; break; default: err("Invalid get int option number"); return -EINVAL; } if (copy_to_user(arg, &opt, sizeof(opt))) return -EFAULT; return 0; } case OV511IOC_SUINT: { struct ov511_uint_opt opt; if (copy_from_user(&opt, arg, sizeof(opt))) return -EFAULT; switch (opt.optnum) { case OV511_UIOPT_POWER_FREQ: rc = sensor_set_light_freq(ov, opt.val); if (rc) return rc; break; case OV511_UIOPT_BFILTER: rc = sensor_set_banding_filter(ov, opt.val); if (rc) return rc; break; case OV511_UIOPT_LED: if (opt.val <= 2) { ov->led_policy = opt.val; if (ov->led_policy == LED_OFF) ov51x_led_control(ov, 0); else if (ov->led_policy == LED_ON) ov51x_led_control(ov, 1); } else { return -EINVAL; } break; case OV511_UIOPT_DEBUG: if (opt.val <= 5) debug = opt.val; else return -EINVAL; break; case OV511_UIOPT_COMPRESS: ov->compress = opt.val; if (ov->compress) { if (ov->bclass == BCL_OV511) ov511_init_compression(ov); else if (ov->bclass == BCL_OV518) ov518_init_compression(ov); } break; default: err("Invalid get int option number"); return -EINVAL; } return 0; } case OV511IOC_WI2C: { struct ov511_i2c_struct w; if (copy_from_user(&w, arg, sizeof(w))) return -EFAULT; return i2c_w_slave(ov, w.slave, w.reg, w.value, w.mask); } case OV511IOC_RI2C: { struct ov511_i2c_struct r; if (copy_from_user(&r, arg, sizeof(r))) return -EFAULT; rc = i2c_r_slave(ov, r.slave, r.reg); if (rc < 0) return rc; r.value = rc; if (copy_to_user(arg, &r, sizeof(r))) return -EFAULT; return 0; } default: return -EINVAL; } /* end switch */ return 0; } #endif /**************************************************************************** * * OV511 and sensor configuration * ***************************************************************************/ /* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses * the same register settings as the OV7610, since they are very similar. */ static int ov7xx0_configure(struct usb_ov511 *ov) { int i, success; int rc; /* Lawrence Glaister <lg@jfm.bc.ca> reports: * * Register 0x0f in the 7610 has the following effects: * * 0x85 (AEC method 1): Best overall, good contrast range * 0x45 (AEC method 2): Very overexposed * 0xa5 (spec sheet default): Ok, but the black level is * shifted resulting in loss of contrast * 0x05 (old driver setting): very overexposed, too much * contrast */ static struct ov511_regvals aRegvalsNorm7610[] = { { OV511_I2C_BUS, 0x10, 0xff }, { OV511_I2C_BUS, 0x16, 0x06 }, { OV511_I2C_BUS, 0x28, 0x24 }, { OV511_I2C_BUS, 0x2b, 0xac }, { OV511_I2C_BUS, 0x12, 0x00 }, { OV511_I2C_BUS, 0x38, 0x81 }, { OV511_I2C_BUS, 0x28, 0x24 }, /* 0c */ { OV511_I2C_BUS, 0x0f, 0x85 }, /* lg's setting */ { OV511_I2C_BUS, 0x15, 0x01 }, { OV511_I2C_BUS, 0x20, 0x1c }, { OV511_I2C_BUS, 0x23, 0x2a }, { OV511_I2C_BUS, 0x24, 0x10 }, { OV511_I2C_BUS, 0x25, 0x8a }, { OV511_I2C_BUS, 0x26, 0xa2 }, { OV511_I2C_BUS, 0x27, 0xc2 }, { OV511_I2C_BUS, 0x2a, 0x04 }, { OV511_I2C_BUS, 0x2c, 0xfe }, { OV511_I2C_BUS, 0x2d, 0x93 }, { OV511_I2C_BUS, 0x30, 0x71 }, { OV511_I2C_BUS, 0x31, 0x60 }, { OV511_I2C_BUS, 0x32, 0x26 }, { OV511_I2C_BUS, 0x33, 0x20 }, { OV511_I2C_BUS, 0x34, 0x48 }, { OV511_I2C_BUS, 0x12, 0x24 }, { OV511_I2C_BUS, 0x11, 0x01 }, { OV511_I2C_BUS, 0x0c, 0x24 }, { OV511_I2C_BUS, 0x0d, 0x24 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; static struct ov511_regvals aRegvalsNorm7620[] = { { OV511_I2C_BUS, 0x00, 0x00 }, { OV511_I2C_BUS, 0x01, 0x80 }, { OV511_I2C_BUS, 0x02, 0x80 }, { OV511_I2C_BUS, 0x03, 0xc0 }, { OV511_I2C_BUS, 0x06, 0x60 }, { OV511_I2C_BUS, 0x07, 0x00 }, { OV511_I2C_BUS, 0x0c, 0x24 }, { OV511_I2C_BUS, 0x0c, 0x24 }, { OV511_I2C_BUS, 0x0d, 0x24 }, { OV511_I2C_BUS, 0x11, 0x01 }, { OV511_I2C_BUS, 0x12, 0x24 }, { OV511_I2C_BUS, 0x13, 0x01 }, { OV511_I2C_BUS, 0x14, 0x84 }, { OV511_I2C_BUS, 0x15, 0x01 }, { OV511_I2C_BUS, 0x16, 0x03 }, { OV511_I2C_BUS, 0x17, 0x2f }, { OV511_I2C_BUS, 0x18, 0xcf }, { OV511_I2C_BUS, 0x19, 0x06 }, { OV511_I2C_BUS, 0x1a, 0xf5 }, { OV511_I2C_BUS, 0x1b, 0x00 }, { OV511_I2C_BUS, 0x20, 0x18 }, { OV511_I2C_BUS, 0x21, 0x80 }, { OV511_I2C_BUS, 0x22, 0x80 }, { OV511_I2C_BUS, 0x23, 0x00 }, { OV511_I2C_BUS, 0x26, 0xa2 }, { OV511_I2C_BUS, 0x27, 0xea }, { OV511_I2C_BUS, 0x28, 0x20 }, { OV511_I2C_BUS, 0x29, 0x00 }, { OV511_I2C_BUS, 0x2a, 0x10 }, { OV511_I2C_BUS, 0x2b, 0x00 }, { OV511_I2C_BUS, 0x2c, 0x88 }, { OV511_I2C_BUS, 0x2d, 0x91 }, { OV511_I2C_BUS, 0x2e, 0x80 }, { OV511_I2C_BUS, 0x2f, 0x44 }, { OV511_I2C_BUS, 0x60, 0x27 }, { OV511_I2C_BUS, 0x61, 0x02 }, { OV511_I2C_BUS, 0x62, 0x5f }, { OV511_I2C_BUS, 0x63, 0xd5 }, { OV511_I2C_BUS, 0x64, 0x57 }, { OV511_I2C_BUS, 0x65, 0x83 }, { OV511_I2C_BUS, 0x66, 0x55 }, { OV511_I2C_BUS, 0x67, 0x92 }, { OV511_I2C_BUS, 0x68, 0xcf }, { OV511_I2C_BUS, 0x69, 0x76 }, { OV511_I2C_BUS, 0x6a, 0x22 }, { OV511_I2C_BUS, 0x6b, 0x00 }, { OV511_I2C_BUS, 0x6c, 0x02 }, { OV511_I2C_BUS, 0x6d, 0x44 }, { OV511_I2C_BUS, 0x6e, 0x80 }, { OV511_I2C_BUS, 0x6f, 0x1d }, { OV511_I2C_BUS, 0x70, 0x8b }, { OV511_I2C_BUS, 0x71, 0x00 }, { OV511_I2C_BUS, 0x72, 0x14 }, { OV511_I2C_BUS, 0x73, 0x54 }, { OV511_I2C_BUS, 0x74, 0x00 }, { OV511_I2C_BUS, 0x75, 0x8e }, { OV511_I2C_BUS, 0x76, 0x00 }, { OV511_I2C_BUS, 0x77, 0xff }, { OV511_I2C_BUS, 0x78, 0x80 }, { OV511_I2C_BUS, 0x79, 0x80 }, { OV511_I2C_BUS, 0x7a, 0x80 }, { OV511_I2C_BUS, 0x7b, 0xe2 }, { OV511_I2C_BUS, 0x7c, 0x00 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; PDEBUG(4, "starting configuration"); /* This looks redundant, but is necessary for WebCam 3 */ ov->primary_i2c_slave = OV7xx0_SID; if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) return -1; if (init_ov_sensor(ov) >= 0) { PDEBUG(1, "OV7xx0 sensor initalized (method 1)"); } else { /* Reset the 76xx */ if (i2c_w(ov, 0x12, 0x80) < 0) return -1; /* Wait for it to initialize */ schedule_timeout(1 + 150 * HZ / 1000); i = 0; success = 0; while (i <= i2c_detect_tries) { if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) && (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) { success = 1; break; } else { i++; } } // Was (i == i2c_detect_tries) previously. This obviously used to always report // success. Whether anyone actually depended on that bug is unknown if ((i >= i2c_detect_tries) && (success == 0)) { err("Failed to read sensor ID. You might not have an"); err("OV7610/20, or it may be not responding. Report"); err("this to " EMAIL); err("This is only a warning. You can attempt to use"); err("your camera anyway"); // Only issue a warning for now // return -1; } else { PDEBUG(1, "OV7xx0 initialized (method 2, %dx)", i+1); } } /* Detect sensor (sub)type */ rc = i2c_r(ov, OV7610_REG_COM_I); if (rc < 0) { err("Error detecting sensor type"); return -1; } else if ((rc & 3) == 3) { info("Sensor is an OV7610"); ov->sensor = SEN_OV7610; } else if ((rc & 3) == 1) { /* I don't know what's different about the 76BE yet. */ if (i2c_r(ov, 0x15) & 1) info("Sensor is an OV7620AE"); else info("Sensor is an OV76BE"); /* OV511+ will return all zero isoc data unless we * configure the sensor as a 7620. Someone needs to * find the exact reg. setting that causes this. */ if (ov->bridge == BRG_OV511PLUS) { info("Enabling 511+/7620AE workaround"); ov->sensor = SEN_OV7620; } else { ov->sensor = SEN_OV76BE; } } else if ((rc & 3) == 0) { info("Sensor is an OV7620"); ov->sensor = SEN_OV7620; } else { err("Unknown image sensor version: %d", rc & 3); return -1; } if (ov->sensor == SEN_OV7620) { PDEBUG(4, "Writing 7620 registers"); if (write_regvals(ov, aRegvalsNorm7620)) return -1; } else { PDEBUG(4, "Writing 7610 registers"); if (write_regvals(ov, aRegvalsNorm7610)) return -1; } /* Set sensor-specific vars */ ov->maxwidth = 640; ov->maxheight = 480; ov->minwidth = 64; ov->minheight = 48; // FIXME: These do not match the actual settings yet ov->brightness = 0x80 << 8; ov->contrast = 0x80 << 8; ov->colour = 0x80 << 8; ov->hue = 0x80 << 8; return 0; } /* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */ static int ov6xx0_configure(struct usb_ov511 *ov) { int rc; static struct ov511_regvals aRegvalsNorm6x20[] = { { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */ { OV511_I2C_BUS, 0x11, 0x01 }, { OV511_I2C_BUS, 0x03, 0x60 }, { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */ { OV511_I2C_BUS, 0x07, 0xa8 }, /* The ratio of 0x0c and 0x0d controls the white point */ { OV511_I2C_BUS, 0x0c, 0x24 }, { OV511_I2C_BUS, 0x0d, 0x24 }, { OV511_I2C_BUS, 0x0f, 0x15 }, /* COMS */ { OV511_I2C_BUS, 0x10, 0x75 }, /* AEC Exposure time */ { OV511_I2C_BUS, 0x12, 0x24 }, /* Enable AGC */ { OV511_I2C_BUS, 0x14, 0x04 }, /* 0x16: 0x06 helps frame stability with moving objects */ { OV511_I2C_BUS, 0x16, 0x06 }, // { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */ { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */ /* 0x28: 0x05 Selects RGB format if RGB on */ { OV511_I2C_BUS, 0x28, 0x05 }, { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */ // { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */ { OV511_I2C_BUS, 0x2d, 0x99 }, { OV511_I2C_BUS, 0x33, 0xa0 }, /* Color Procesing Parameter */ { OV511_I2C_BUS, 0x34, 0xd2 }, /* Max A/D range */ { OV511_I2C_BUS, 0x38, 0x8b }, { OV511_I2C_BUS, 0x39, 0x40 }, { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */ { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */ { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */ { OV511_I2C_BUS, 0x3d, 0x80 }, /* These next two registers (0x4a, 0x4b) are undocumented. They * control the color balance */ { OV511_I2C_BUS, 0x4a, 0x80 }, { OV511_I2C_BUS, 0x4b, 0x80 }, { OV511_I2C_BUS, 0x4d, 0xd2 }, /* This reduces noise a bit */ { OV511_I2C_BUS, 0x4e, 0xc1 }, { OV511_I2C_BUS, 0x4f, 0x04 }, // Do 50-53 have any effect? // Toggle 0x12[2] off and on here? { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */ }; static struct ov511_regvals aRegvalsNorm6x30[] = { { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */ { OV511_I2C_BUS, 0x11, 0x00 }, { OV511_I2C_BUS, 0x03, 0x60 }, { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */ { OV511_I2C_BUS, 0x07, 0xa8 }, /* The ratio of 0x0c and 0x0d controls the white point */ { OV511_I2C_BUS, 0x0c, 0x24 }, { OV511_I2C_BUS, 0x0d, 0x24 }, { OV511_I2C_BUS, 0x0e, 0x20 }, // { OV511_I2C_BUS, 0x14, 0x80 }, { OV511_I2C_BUS, 0x16, 0x03 }, // { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */ // 21 & 22? The suggested values look wrong. Go with default { OV511_I2C_BUS, 0x23, 0xc0 }, { OV511_I2C_BUS, 0x25, 0x9a }, // Check this against default // { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */ /* 0x28: 0x05 Selects RGB format if RGB on */ // { OV511_I2C_BUS, 0x28, 0x05 }, // { OV511_I2C_BUS, 0x28, 0x45 }, // DEBUG: Tristate UV bus { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */ // { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */ { OV511_I2C_BUS, 0x2d, 0x99 }, // { OV511_I2C_BUS, 0x33, 0x26 }, // Reserved bits on 6620 // { OV511_I2C_BUS, 0x34, 0x03 }, /* Max A/D range */ // { OV511_I2C_BUS, 0x38, 0x83 }, // { OV511_I2C_BUS, 0x39, 0xc0 }, // 6630 adds bit 7 // { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */ // { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */ // { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */ { OV511_I2C_BUS, 0x3d, 0x80 }, // { OV511_I2C_BUS, 0x3f, 0x0e }, /* These next two registers (0x4a, 0x4b) are undocumented. They * control the color balance */ // { OV511_I2C_BUS, 0x4a, 0x80 }, // Check these // { OV511_I2C_BUS, 0x4b, 0x80 }, { OV511_I2C_BUS, 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */ { OV511_I2C_BUS, 0x4e, 0x40 }, /* UV average mode, color killer: strongest */ { OV511_I2C_BUS, 0x4f, 0x07 }, { OV511_I2C_BUS, 0x54, 0x23 }, /* Max AGC gain: 18dB */ { OV511_I2C_BUS, 0x57, 0x81 }, /* (default) */ { OV511_I2C_BUS, 0x59, 0x01 }, /* AGC dark current comp: +1 */ { OV511_I2C_BUS, 0x5a, 0x2c }, /* (undocumented) */ { OV511_I2C_BUS, 0x5b, 0x0f }, /* AWB chrominance levels */ // { OV511_I2C_BUS, 0x5c, 0x10 }, { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */ }; PDEBUG(4, "starting sensor configuration"); if (init_ov_sensor(ov) < 0) { err("Failed to read sensor ID. You might not have an OV6xx0,"); err("or it may be not responding. Report this to " EMAIL); return -1; } else { PDEBUG(1, "OV6xx0 sensor detected"); } /* Detect sensor (sub)type */ rc = i2c_r(ov, OV7610_REG_COM_I); if (rc < 0) { err("Error detecting sensor type"); return -1; } if ((rc & 3) == 0) { ov->sensor = SEN_OV6630; info("Sensor is an OV6630"); } else if ((rc & 3) == 1) { ov->sensor = SEN_OV6620; info("Sensor is an OV6620"); } else if ((rc & 3) == 2) { ov->sensor = SEN_OV6630; info("Sensor is an OV6630AE"); } else if ((rc & 3) == 3) { ov->sensor = SEN_OV6630; info("Sensor is an OV6630AF"); } /* Set sensor-specific vars */ ov->maxwidth = 352; ov->maxheight = 288; ov->minwidth = 64; ov->minheight = 48; // FIXME: These do not match the actual settings yet ov->brightness = 0x80 << 8; ov->contrast = 0x80 << 8; ov->colour = 0x80 << 8; ov->hue = 0x80 << 8; if (ov->sensor == SEN_OV6620) { PDEBUG(4, "Writing 6x20 registers"); if (write_regvals(ov, aRegvalsNorm6x20)) return -1; } else { PDEBUG(4, "Writing 6x30 registers"); if (write_regvals(ov, aRegvalsNorm6x30)) return -1; } return 0; } /* This initializes the KS0127 and KS0127B video decoders. */ static int ks0127_configure(struct usb_ov511 *ov) { int rc; // FIXME: I don't know how to sync or reset it yet #if 0 if (ov51x_init_ks_sensor(ov) < 0) { err("Failed to initialize the KS0127"); return -1; } else { PDEBUG(1, "KS012x(B) sensor detected"); } #endif /* Detect decoder subtype */ rc = i2c_r(ov, 0x00); if (rc < 0) { err("Error detecting sensor type"); return -1; } else if (rc & 0x08) { rc = i2c_r(ov, 0x3d); if (rc < 0) { err("Error detecting sensor type"); return -1; } else if ((rc & 0x0f) == 0) { info("Sensor is a KS0127"); ov->sensor = SEN_KS0127; } else if ((rc & 0x0f) == 9) { info("Sensor is a KS0127B Rev. A"); ov->sensor = SEN_KS0127B; } } else { err("Error: Sensor is an unsupported KS0122"); return -1; } /* Set sensor-specific vars */ ov->maxwidth = 640; ov->maxheight = 480; ov->minwidth = 64; ov->minheight = 48; // FIXME: These do not match the actual settings yet ov->brightness = 0x80 << 8; ov->contrast = 0x80 << 8; ov->colour = 0x80 << 8; ov->hue = 0x80 << 8; /* This device is not supported yet. Bail out now... */ err("This sensor is not supported yet."); return -1; return 0; } /* This initializes the SAA7111A video decoder. */ static int saa7111a_configure(struct usb_ov511 *ov) { int rc; /* Since there is no register reset command, all registers must be * written, otherwise gives erratic results */ static struct ov511_regvals aRegvalsNormSAA7111A[] = { { OV511_I2C_BUS, 0x06, 0xce }, { OV511_I2C_BUS, 0x07, 0x00 }, { OV511_I2C_BUS, 0x10, 0x44 }, /* YUV422, 240/286 lines */ { OV511_I2C_BUS, 0x0e, 0x01 }, /* NTSC M or PAL BGHI */ { OV511_I2C_BUS, 0x00, 0x00 }, { OV511_I2C_BUS, 0x01, 0x00 }, { OV511_I2C_BUS, 0x03, 0x23 }, { OV511_I2C_BUS, 0x04, 0x00 }, { OV511_I2C_BUS, 0x05, 0x00 }, { OV511_I2C_BUS, 0x08, 0xc8 }, /* Auto field freq */ { OV511_I2C_BUS, 0x09, 0x01 }, /* Chrom. trap off, APER=0.25 */ { OV511_I2C_BUS, 0x0a, 0x80 }, /* BRIG=128 */ { OV511_I2C_BUS, 0x0b, 0x40 }, /* CONT=1.0 */ { OV511_I2C_BUS, 0x0c, 0x40 }, /* SATN=1.0 */ { OV511_I2C_BUS, 0x0d, 0x00 }, /* HUE=0 */ { OV511_I2C_BUS, 0x0f, 0x00 }, { OV511_I2C_BUS, 0x11, 0x0c }, { OV511_I2C_BUS, 0x12, 0x00 }, { OV511_I2C_BUS, 0x13, 0x00 }, { OV511_I2C_BUS, 0x14, 0x00 }, { OV511_I2C_BUS, 0x15, 0x00 }, { OV511_I2C_BUS, 0x16, 0x00 }, { OV511_I2C_BUS, 0x17, 0x00 }, { OV511_I2C_BUS, 0x02, 0xc0 }, /* Composite input 0 */ { OV511_DONE_BUS, 0x0, 0x00 }, }; // FIXME: I don't know how to sync or reset it yet #if 0 if (ov51x_init_saa_sensor(ov) < 0) { err("Failed to initialize the SAA7111A"); return -1; } else { PDEBUG(1, "SAA7111A sensor detected"); } #endif /* 640x480 not supported with PAL */ if (ov->pal) { ov->maxwidth = 320; ov->maxheight = 240; /* Even field only */ } else { ov->maxwidth = 640; ov->maxheight = 480; /* Even/Odd fields */ } ov->minwidth = 320; ov->minheight = 240; /* Even field only */ ov->has_decoder = 1; ov->num_inputs = 8; ov->norm = VIDEO_MODE_AUTO; ov->stop_during_set = 0; /* Decoder guarantees stable image */ /* Decoder doesn't change these values, so we use these instead of * acutally reading the registers (which doesn't work) */ ov->brightness = 0x80 << 8; ov->contrast = 0x40 << 9; ov->colour = 0x40 << 9; ov->hue = 32768; PDEBUG(4, "Writing SAA7111A registers"); if (write_regvals(ov, aRegvalsNormSAA7111A)) return -1; /* Detect version of decoder. This must be done after writing the * initial regs or the decoder will lock up. */ rc = i2c_r(ov, 0x00); if (rc < 0) { err("Error detecting sensor version"); return -1; } else { info("Sensor is an SAA7111A (version 0x%x)", rc); ov->sensor = SEN_SAA7111A; } // FIXME: Fix this for OV518(+) /* Latch to negative edge of clock. Otherwise, we get incorrect * colors and jitter in the digital signal. */ if (ov->bclass == BCL_OV511) reg_w(ov, 0x11, 0x00); else warn("SAA7111A not yet supported with OV518/OV518+"); return 0; } /* This initializes the OV511/OV511+ and the sensor */ static int ov511_configure(struct usb_ov511 *ov) { static struct ov511_regvals aRegvalsInit511[] = { { OV511_REG_BUS, R51x_SYS_RESET, 0x7f }, { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, { OV511_REG_BUS, R51x_SYS_RESET, 0x7f }, { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, { OV511_REG_BUS, R51x_SYS_RESET, 0x3f }, { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, { OV511_REG_BUS, R51x_SYS_RESET, 0x3d }, { OV511_DONE_BUS, 0x0, 0x00}, }; static struct ov511_regvals aRegvalsNorm511[] = { { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0x01 }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, { OV511_REG_BUS, R511_FIFO_OPTS, 0x1f }, { OV511_REG_BUS, R511_COMP_EN, 0x00 }, { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; static struct ov511_regvals aRegvalsNorm511Plus[] = { { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0xff }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, { OV511_REG_BUS, R511_FIFO_OPTS, 0xff }, { OV511_REG_BUS, R511_COMP_EN, 0x00 }, { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; PDEBUG(4, ""); ov->customid = reg_r(ov, R511_SYS_CUST_ID); if (ov->customid < 0) { err("Unable to read camera bridge registers"); goto error; } PDEBUG (1, "CustomID = %d", ov->customid); ov->desc = symbolic(camlist, ov->customid); info("model: %s", ov->desc); if (0 == strcmp(ov->desc, NOT_DEFINED_STR)) { err("Camera type (%d) not recognized", ov->customid); err("Please notify " EMAIL " of the name,"); err("manufacturer, model, and this number of your camera."); err("Also include the output of the detection process."); } if (ov->customid == 70) /* USB Life TV (PAL/SECAM) */ ov->pal = 1; if (write_regvals(ov, aRegvalsInit511)) goto error; if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO) ov51x_led_control(ov, 0); /* The OV511+ has undocumented bits in the flow control register. * Setting it to 0xff fixes the corruption with moving objects. */ if (ov->bridge == BRG_OV511) { if (write_regvals(ov, aRegvalsNorm511)) goto error; } else if (ov->bridge == BRG_OV511PLUS) { if (write_regvals(ov, aRegvalsNorm511Plus)) goto error; } else { err("Invalid bridge"); } if (ov511_init_compression(ov)) goto error; ov->packet_numbering = 1; ov511_set_packet_size(ov, 0); ov->snap_enabled = snapshot; /* Test for 7xx0 */ PDEBUG(3, "Testing for 0V7xx0"); ov->primary_i2c_slave = OV7xx0_SID; if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) goto error; if (i2c_w(ov, 0x12, 0x80) < 0) { /* Test for 6xx0 */ PDEBUG(3, "Testing for 0V6xx0"); ov->primary_i2c_slave = OV6xx0_SID; if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0) goto error; if (i2c_w(ov, 0x12, 0x80) < 0) { /* Test for 8xx0 */ PDEBUG(3, "Testing for 0V8xx0"); ov->primary_i2c_slave = OV8xx0_SID; if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0) goto error; if (i2c_w(ov, 0x12, 0x80) < 0) { /* Test for SAA7111A */ PDEBUG(3, "Testing for SAA7111A"); ov->primary_i2c_slave = SAA7111A_SID; if (ov51x_set_slave_ids(ov, SAA7111A_SID) < 0) goto error; if (i2c_w(ov, 0x0d, 0x00) < 0) { /* Test for KS0127 */ PDEBUG(3, "Testing for KS0127"); ov->primary_i2c_slave = KS0127_SID; if (ov51x_set_slave_ids(ov, KS0127_SID) < 0) goto error; if (i2c_w(ov, 0x10, 0x00) < 0) { err("Can't determine sensor slave IDs"); goto error; } else { if (ks0127_configure(ov) < 0) { err("Failed to configure KS0127"); goto error; } } } else { if (saa7111a_configure(ov) < 0) { err("Failed to configure SAA7111A"); goto error; } } } else { err("Detected unsupported OV8xx0 sensor"); goto error; } } else { if (ov6xx0_configure(ov) < 0) { err("Failed to configure OV6xx0"); goto error; } } } else { if (ov7xx0_configure(ov) < 0) { err("Failed to configure OV7xx0"); goto error; } } return 0; error: err("OV511 Config failed"); return -EBUSY; } /* This initializes the OV518/OV518+ and the sensor */ static int ov518_configure(struct usb_ov511 *ov) { /* For 518 and 518+ */ static struct ov511_regvals aRegvalsInit518[] = { { OV511_REG_BUS, R51x_SYS_RESET, 0x40 }, { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, { OV511_REG_BUS, R51x_SYS_RESET, 0x3e }, { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, { OV511_REG_BUS, R51x_SYS_RESET, 0x00 }, { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, { OV511_REG_BUS, 0x46, 0x00 }, { OV511_REG_BUS, 0x5d, 0x03 }, { OV511_DONE_BUS, 0x0, 0x00}, }; static struct ov511_regvals aRegvalsNorm518[] = { { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */ { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */ { OV511_REG_BUS, 0x31, 0x0f }, { OV511_REG_BUS, 0x5d, 0x03 }, { OV511_REG_BUS, 0x24, 0x9f }, { OV511_REG_BUS, 0x25, 0x90 }, { OV511_REG_BUS, 0x20, 0x00 }, { OV511_REG_BUS, 0x51, 0x04 }, { OV511_REG_BUS, 0x71, 0x19 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; static struct ov511_regvals aRegvalsNorm518Plus[] = { { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */ { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */ { OV511_REG_BUS, 0x31, 0x0f }, { OV511_REG_BUS, 0x5d, 0x03 }, { OV511_REG_BUS, 0x24, 0x9f }, { OV511_REG_BUS, 0x25, 0x90 }, { OV511_REG_BUS, 0x20, 0x60 }, { OV511_REG_BUS, 0x51, 0x02 }, { OV511_REG_BUS, 0x71, 0x19 }, { OV511_REG_BUS, 0x40, 0xff }, { OV511_REG_BUS, 0x41, 0x42 }, { OV511_REG_BUS, 0x46, 0x00 }, { OV511_REG_BUS, 0x33, 0x04 }, { OV511_REG_BUS, 0x21, 0x19 }, { OV511_REG_BUS, 0x3f, 0x10 }, { OV511_DONE_BUS, 0x0, 0x00 }, }; PDEBUG(4, ""); /* First 5 bits of custom ID reg are a revision ID on OV518 */ info("Device revision %d", 0x1F & reg_r(ov, R511_SYS_CUST_ID)); /* Give it the default description */ ov->desc = symbolic(camlist, 0); if (write_regvals(ov, aRegvalsInit518)) goto error; /* Set LED GPIO pin to output mode */ if (reg_w_mask(ov, 0x57, 0x00, 0x02) < 0) goto error; /* LED is off by default with OV518; have to explicitly turn it on */ if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO) ov51x_led_control(ov, 0); else ov51x_led_control(ov, 1); /* Don't require compression if dumppix is enabled; otherwise it's * required. OV518 has no uncompressed mode, to save RAM. */ if (!dumppix && !ov->compress) { ov->compress = 1; warn("Compression required with OV518...enabling"); } if (ov->bridge == BRG_OV518) { if (write_regvals(ov, aRegvalsNorm518)) goto error; } else if (ov->bridge == BRG_OV518PLUS) { if (write_regvals(ov, aRegvalsNorm518Plus)) goto error; } else { err("Invalid bridge"); } if (reg_w(ov, 0x2f, 0x80) < 0) goto error; if (ov518_init_compression(ov)) goto error; if (ov->bridge == BRG_OV518) { struct usb_interface *ifp = &ov->dev->config[0].interface[0]; __u16 mxps = ifp->altsetting[7].endpoint[0].wMaxPacketSize; /* Some OV518s have packet numbering by default, some don't */ if (mxps == 897) ov->packet_numbering = 1; else ov->packet_numbering = 0; } else { /* OV518+ has packet numbering turned on by default */ ov->packet_numbering = 1; } ov518_set_packet_size(ov, 0); ov->snap_enabled = snapshot; /* Test for 76xx */ ov->primary_i2c_slave = OV7xx0_SID; if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) goto error; /* The OV518 must be more aggressive about sensor detection since * I2C write will never fail if the sensor is not present. We have * to try to initialize the sensor to detect its presence */ if (init_ov_sensor(ov) < 0) { /* Test for 6xx0 */ ov->primary_i2c_slave = OV6xx0_SID; if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0) goto error; if (init_ov_sensor(ov) < 0) { /* Test for 8xx0 */ ov->primary_i2c_slave = OV8xx0_SID; if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0) goto error; if (init_ov_sensor(ov) < 0) { err("Can't determine sensor slave IDs"); goto error; } else { err("Detected unsupported OV8xx0 sensor"); goto error; } } else { if (ov6xx0_configure(ov) < 0) { err("Failed to configure OV6xx0"); goto error; } } } else { if (ov7xx0_configure(ov) < 0) { err("Failed to configure OV7xx0"); goto error; } } ov->maxwidth = 352; ov->maxheight = 288; // The OV518 cannot go as low as the sensor can ov->minwidth = 160; ov->minheight = 120; return 0; error: err("OV518 Config failed"); return -EBUSY; } /**************************************************************************** * * USB routines * ***************************************************************************/ static void * ov51x_probe(struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id) { struct usb_interface_descriptor *interface; struct usb_ov511 *ov; int i; int registered = 0; PDEBUG(1, "probing for device..."); /* We don't handle multi-config cameras */ if (dev->descriptor.bNumConfigurations != 1) return NULL; interface = &dev->actconfig->interface[ifnum].altsetting[0]; /* Checking vendor/product should be enough, but what the hell */ if (interface->bInterfaceClass != 0xFF) return NULL; if (interface->bInterfaceSubClass != 0x00) return NULL; /* Since code below may sleep, we use this as a lock */ MOD_INC_USE_COUNT; if ((ov = kmalloc(sizeof(*ov), GFP_KERNEL)) == NULL) { err("couldn't kmalloc ov struct"); goto error_out; } memset(ov, 0, sizeof(*ov)); ov->dev = dev; ov->iface = interface->bInterfaceNumber; ov->led_policy = led; ov->compress = compress; ov->lightfreq = lightfreq; ov->num_inputs = 1; /* Video decoder init functs. change this */ ov->stop_during_set = !fastset; ov->backlight = backlight; ov->mirror = mirror; ov->auto_brt = autobright; ov->auto_gain = autogain; ov->auto_exp = autoexp; switch (dev->descriptor.idProduct) { case PROD_OV511: ov->bridge = BRG_OV511; ov->bclass = BCL_OV511; break; case PROD_OV511PLUS: ov->bridge = BRG_OV511PLUS; ov->bclass = BCL_OV511; break; case PROD_OV518: ov->bridge = BRG_OV518; ov->bclass = BCL_OV518; break; case PROD_OV518PLUS: ov->bridge = BRG_OV518PLUS; ov->bclass = BCL_OV518; break; case PROD_ME2CAM: if (dev->descriptor.idVendor != VEND_MATTEL) goto error; ov->bridge = BRG_OV511PLUS; ov->bclass = BCL_OV511; break; default: err("Unknown product ID 0x%04x", dev->descriptor.idProduct); goto error_dealloc; } info("USB %s video device found", symbolic(brglist, ov->bridge)); /* Workaround for some applications that want data in RGB * instead of BGR. */ if (force_rgb) info("data format set to RGB"); init_waitqueue_head(&ov->wq); init_MUTEX(&ov->lock); /* to 1 == available */ init_MUTEX(&ov->buf_lock); init_MUTEX(&ov->param_lock); init_MUTEX(&ov->i2c_lock); init_MUTEX(&ov->cbuf_lock); ov->buf_state = BUF_NOT_ALLOCATED; if (usb_make_path(dev, ov->usb_path, OV511_USB_PATH_LEN) < 0) { err("usb_make_path error"); goto error_dealloc; } /* Allocate control transfer buffer. */ /* Must be kmalloc()'ed, for DMA compatibility */ ov->cbuf = kmalloc(OV511_CBUF_SIZE, GFP_KERNEL); if (!ov->cbuf) goto error; if (ov->bclass == BCL_OV518) { if (ov518_configure(ov) < 0) goto error; } else { if (ov511_configure(ov) < 0) goto error; } for (i = 0; i < OV511_NUMFRAMES; i++) { ov->frame[i].framenum = i; init_waitqueue_head(&ov->frame[i].wq); } for (i = 0; i < OV511_NUMSBUF; i++) { ov->sbuf[i].ov = ov; spin_lock_init(&ov->sbuf[i].lock); ov->sbuf[i].n = i; } /* Unnecessary? (This is done on open(). Need to make sure variables * are properly initialized without this before removing it, though). */ if (ov51x_set_default_params(ov) < 0) goto error; #ifdef OV511_DEBUG if (dump_bridge) { if (ov->bclass == BCL_OV511) ov511_dump_regs(ov); else ov518_dump_regs(ov); } #endif memcpy(&ov->vdev, &vdev_template, sizeof(vdev_template)); ov->vdev.priv = ov; for (i = 0; i < OV511_MAX_UNIT_VIDEO; i++) { /* Minor 0 cannot be specified; assume user wants autodetect */ if (unit_video[i] == 0) break; if (video_register_device(&ov->vdev, VFL_TYPE_GRABBER, unit_video[i]) >= 0) { registered = 1; break; } } /* Use the next available one */ if (!registered && video_register_device(&ov->vdev, VFL_TYPE_GRABBER, -1) < 0) { err("video_register_device failed"); goto error; } info("Device at %s registered to minor %d", ov->usb_path, ov->vdev.minor); #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) create_proc_ov511_cam(ov); #endif MOD_DEC_USE_COUNT; return ov; error: #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) /* Safe to call even if entry doesn't exist */ destroy_proc_ov511_cam(ov); #endif if (ov->cbuf) { down(&ov->cbuf_lock); kfree(ov->cbuf); ov->cbuf = NULL; up(&ov->cbuf_lock); } error_dealloc: if (ov) { kfree(ov); ov = NULL; } error_out: MOD_DEC_USE_COUNT; err("Camera initialization failed"); return NULL; } static void ov51x_disconnect(struct usb_device *dev, void *ptr) { struct usb_ov511 *ov = (struct usb_ov511 *) ptr; int n; MOD_INC_USE_COUNT; PDEBUG(3, ""); video_unregister_device(&ov->vdev); if (ov->user) PDEBUG(3, "Device open...deferring video_unregister_device"); for (n = 0; n < OV511_NUMFRAMES; n++) ov->frame[n].grabstate = FRAME_ERROR; ov->curframe = -1; /* This will cause the process to request another frame */ for (n = 0; n < OV511_NUMFRAMES; n++) if (waitqueue_active(&ov->frame[n].wq)) wake_up_interruptible(&ov->frame[n].wq); if (waitqueue_active(&ov->wq)) wake_up_interruptible(&ov->wq); ov->streaming = 0; ov51x_unlink_isoc(ov); #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) destroy_proc_ov511_cam(ov); #endif ov->dev = NULL; /* Free the memory */ if (ov && !ov->user) { down(&ov->cbuf_lock); kfree(ov->cbuf); ov->cbuf = NULL; up(&ov->cbuf_lock); ov51x_dealloc(ov, 1); kfree(ov); ov = NULL; } MOD_DEC_USE_COUNT; PDEBUG(3, "Disconnect complete"); } static struct usb_driver ov511_driver = { .name = "ov511", .id_table = device_table, .probe = ov51x_probe, .disconnect = ov51x_disconnect }; /**************************************************************************** * * Module routines * ***************************************************************************/ /* Returns 0 for success */ int ov511_register_decomp_module(int ver, struct ov51x_decomp_ops *ops, int ov518, int mmx) { if (ver != DECOMP_INTERFACE_VER) { err("Decompression module has incompatible"); err("interface version %d", ver); err("Interface version %d is required", DECOMP_INTERFACE_VER); return -EINVAL; } if (!ops) return -EFAULT; if (mmx && !ov51x_mmx_available) { err("MMX not available on this system or kernel"); return -EINVAL; } lock_kernel(); if (ov518) { if (mmx) { if (ov518_mmx_decomp_ops) goto err_in_use; else ov518_mmx_decomp_ops = ops; } else { if (ov518_decomp_ops) goto err_in_use; else ov518_decomp_ops = ops; } } else { if (mmx) { if (ov511_mmx_decomp_ops) goto err_in_use; else ov511_mmx_decomp_ops = ops; } else { if (ov511_decomp_ops) goto err_in_use; else ov511_decomp_ops = ops; } } MOD_INC_USE_COUNT; unlock_kernel(); return 0; err_in_use: unlock_kernel(); return -EBUSY; } void ov511_deregister_decomp_module(int ov518, int mmx) { lock_kernel(); if (ov518) { if (mmx) ov518_mmx_decomp_ops = NULL; else ov518_decomp_ops = NULL; } else { if (mmx) ov511_mmx_decomp_ops = NULL; else ov511_decomp_ops = NULL; } MOD_DEC_USE_COUNT; unlock_kernel(); } static int __init usb_ov511_init(void) { #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) proc_ov511_create(); #endif if (usb_register(&ov511_driver) < 0) return -1; #if defined (__i386__) if (test_bit(X86_FEATURE_MMX, boot_cpu_data.x86_capability)) ov51x_mmx_available = 1; #endif info(DRIVER_VERSION " : " DRIVER_DESC); return 0; } static void __exit usb_ov511_exit(void) { usb_deregister(&ov511_driver); info("driver deregistered"); #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) proc_ov511_destroy(); #endif } module_init(usb_ov511_init); module_exit(usb_ov511_exit); EXPORT_SYMBOL(ov511_register_decomp_module); EXPORT_SYMBOL(ov511_deregister_decomp_module);
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