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/*
* OmniVision OV511 Camera-to-USB Bridge Driver
*
* Copyright (c) 1999-2001 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>
* Kernel I2C interface adapted from nt1003 driver
*
* 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>
#if defined (__i386__)
#include <asm/cpufeature.h>
#endif
#include "ov511.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v1.48a for Linux 2.4"
#define EMAIL "mmcclell@bigfoot.com"
#define DRIVER_AUTHOR "Mark McClelland <mmcclell@bigfoot.com> & 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
/* 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)
/* PARAMETER VARIABLES: */
/* (See ov511.txt for detailed descriptions of these.) */
/* Sensor automatically changes brightness */
static int autobright = 1;
/* Sensor automatically changes gain */
static int autogain = 1;
/* Sensor automatically changes exposure */
static int autoexp = 1;
/* 0=no debug messages
* 1=init/detection/unload and other significant messages,
* 2=some warning messages
* 3=config/control function calls
* 4=most function calls and data parsing messages
* 5=highly repetitive mesgs
* NOTE: This should be changed to 0, 1, or 2 for production kernels
*/
static int debug; /* = 0 */
/* Fix vertical misalignment of red and blue at 640x480 */
static int fix_rgb_offset; /* = 0 */
/* Snapshot mode enabled flag */
static int snapshot; /* = 0 */
/* Force image to be read in RGB instead of BGR. This option allow
* programs that expect RGB data (e.g. gqcam) to work with this driver. */
static int force_rgb; /* = 0 */
/* Number of seconds before inactive buffers are deallocated */
static int buf_timeout = 5;
/* Number of cameras to stream from simultaneously */
static int cams = 1;
/* Enable compression. Needs a fast (>300 MHz) CPU. */
static int compress; /* = 0 */
/* Display test pattern - doesn't work yet either */
static int testpat; /* = 0 */
/* Setting this to 1 will make the sensor output GBR422 instead of YUV420. Only
* affects RGB24 mode. */
static int sensor_gbr; /* = 0 */
/* Dump raw pixel data. */
static int dumppix; /* = 0 */
/* LED policy. Only works on some OV511+ cameras. 0=off, 1=on (default), 2=auto
* (on when open) */
static int led = 1;
/* Set this to 1 to dump the bridge register contents after initialization */
static int dump_bridge; /* = 0 */
/* Set this to 1 to dump the sensor register contents after initialization */
static int dump_sensor; /* = 0 */
/* Temporary option for debugging "works, but no image" problem. Prints the
* first 12 bytes of data (potentially a packet header) in each isochronous
* data frame. */
static int printph; /* = 0 */
/* Compression parameters - I'm not exactly sure what these do yet */
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;
/* Light frequency. Set to 50 or 60 (Hz), or zero for default settings */
static int lightfreq; /* = 0 */
/* Set this to 1 to enable banding filter by default. Compensates for
* alternating horizontal light/dark bands caused by (usually fluorescent)
* lights */
static int bandingfilter; /* = 0 */
/* Pixel clock divisor */
static int clockdiv = -1;
/* Isoc packet size */
static int packetsize = -1;
/* Frame drop register (16h) */
static int framedrop = -1;
/* Allows picture settings (brightness, hue, etc...) to take effect immediately,
* even in the middle of a frame. This reduces the time to change settings, but
* can ruin frames during the change. Only affects OmniVision sensors. */
static int fastset; /* = 0 */
/* Forces the palette to a specific value. If an application requests a
* different palette, it will be rejected. */
static int force_palette; /* = 0 */
/* Set tuner type, if not autodetected */
static int tuner = -1;
/* Allows proper exposure of objects that are illuminated from behind. Only
* affects OmniVision sensors. */
static int backlight; /* = 0 */
/* If you change this, you must also change the MODULE_PARM definition */
#define OV511_MAX_UNIT_VIDEO 16
/* Allows specified minor numbers to be forced. They will be assigned in the
* order that devices are detected. Note that you cannot specify 0 as a minor
* number. If you do not specify any, the next available one will be used. This
* requires kernel 2.4.5 or later. */
static int unit_video[OV511_MAX_UNIT_VIDEO];
/* Remove zero-padding from uncompressed incoming data. This will compensate for
* the blocks of corruption that appear when the camera cannot keep up with the
* speed of the USB bus (eg. at low frame resolutions) */
static int remove_zeros; /* = 0 */
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(fix_rgb_offset, "i");
MODULE_PARM_DESC(fix_rgb_offset,
"Fix vertical misalignment of red and blue at 640x480");
MODULE_PARM(snapshot, "i");
MODULE_PARM_DESC(snapshot, "Enable snapshot mode");
MODULE_PARM(force_rgb, "i");
MODULE_PARM_DESC(force_rgb, "Read RGB instead of BGR");
MODULE_PARM(buf_timeout, "i");
MODULE_PARM_DESC(buf_timeout, "Number of seconds before buffer deallocation");
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)");
// Temporarily removed (needs to be rewritten for new format conversion code)
// MODULE_PARM(sensor_gbr, "i");
// MODULE_PARM_DESC(sensor_gbr, "Make sensor output GBR422 rather than YUV420");
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(tuner, "i");
MODULE_PARM_DESC(tuner, "Set tuner type, if not autodetected");
MODULE_PARM(backlight, "i");
MODULE_PARM_DESC(backlight, "For objects that are lit from behind");
MODULE_PARM(unit_video, "0-16i");
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_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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;
/* Function prototypes */
static void ov51x_clear_snapshot(struct usb_ov511 *);
static int ov51x_check_snapshot(struct usb_ov511 *);
static inline int sensor_get_picture(struct usb_ov511 *,
struct video_picture *);
static int sensor_get_exposure(struct usb_ov511 *, unsigned char *);
static int ov511_control_ioctl(struct inode *, struct file *, unsigned int,
unsigned long);
/**********************************************************************
* List of known OV511-based cameras
**********************************************************************/
static struct cam_list clist[] = {
{ 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" },
{ 36, "Koala-Cam" },
{ 38, "Lifeview USB Life TV" },
{ 41, "Samsung Anycam MPC-M10" },
{ 43, "Mtekvision Zeca MV402" },
{ 46, "Suma eON" },
{ 100, "Lifeview RoboCam" },
{ 102, "AverMedia InterCam Elite" },
{ 112, "MediaForte MV300" }, /* or OV7110 evaluation kit */
{ -1, NULL }
};
static __devinitdata 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);
#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
static struct palette_list 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 }
};
#endif
static unsigned char yQuanTable511[] = OV511_YQUANTABLE;
static unsigned char uvQuanTable511[] = OV511_UVQUANTABLE;
static unsigned char yQuanTable518[] = OV518_YQUANTABLE;
static unsigned char uvQuanTable518[] = OV518_UVQUANTABLE;
/**********************************************************************
*
* Memory management
*
* This is a shameless copy from the USB-cpia driver (linux kernel
* version 2.3.29 or so, I have no idea what this code actually does ;).
* Actually it seems to be a copy of a shameless copy of the bttv-driver.
* Or that is a copy of a shameless copy of ... (To the powers: is there
* no generic kernel-function to do this sort of stuff?)
*
* Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says
* there will be one, but apparentely not yet -jerdfelt
*
* So I copied it again for the OV511 driver -claudio
**********************************************************************/
/* Given PGD from the address space's page table, return the kernel
* virtual mapping of the physical memory mapped at ADR.
*/
static inline unsigned long
uvirt_to_kva(pgd_t *pgd, unsigned long adr)
{
unsigned long ret = 0UL;
pmd_t *pmd;
pte_t *ptep, pte;
if (!pgd_none(*pgd)) {
pmd = pmd_offset(pgd, adr);
if (!pmd_none(*pmd)) {
ptep = pte_offset(pmd, adr);
pte = *ptep;
if (pte_present(pte)) {
ret = (unsigned long)
page_address(pte_page(pte));
ret |= (adr & (PAGE_SIZE - 1));
}
}
}
return ret;
}
/* Here we want the physical address of the memory.
* This is used when initializing the contents of the
* area and marking the pages as reserved.
*/
static inline unsigned long
kvirt_to_pa(unsigned long adr)
{
unsigned long va, kva, ret;
va = VMALLOC_VMADDR(adr);
kva = uvirt_to_kva(pgd_offset_k(va), va);
ret = __pa(kva);
return ret;
}
static void *
rvmalloc(unsigned long size)
{
void *mem;
unsigned long adr, page;
/* Round it off to PAGE_SIZE */
size += (PAGE_SIZE - 1);
size &= ~(PAGE_SIZE - 1);
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) {
page = kvirt_to_pa(adr);
mem_map_reserve(virt_to_page(__va(page)));
adr += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
return mem;
}
static void
rvfree(void *mem, unsigned long size)
{
unsigned long adr, page;
if (!mem)
return;
size += (PAGE_SIZE - 1);
size &= ~(PAGE_SIZE - 1);
adr=(unsigned long) mem;
while (size > 0) {
page = kvirt_to_pa(adr);
mem_map_unreserve(virt_to_page(__va(page)));
adr += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
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: ov511_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, j, len;
struct usb_ov511 *ov511 = data;
struct video_picture p;
unsigned char exp;
if (!ov511 || !ov511->dev)
return -ENODEV;
sensor_get_picture(ov511, &p);
sensor_get_exposure(ov511, &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", ov511->customid);
out += sprintf(out, "model : %s\n", ov511->desc ?
clist[ov511->desc].description : "unknown");
out += sprintf(out, "streaming : %s\n", YES_NO(ov511->streaming));
out += sprintf(out, "grabbing : %s\n", YES_NO(ov511->grabbing));
out += sprintf(out, "compress : %s\n", YES_NO(ov511->compress));
out += sprintf(out, "subcapture : %s\n", YES_NO(ov511->sub_flag));
out += sprintf(out, "sub_size : %d %d %d %d\n",
ov511->subx, ov511->suby, ov511->subw, ov511->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",
ov511->frame[i].depth);
out += sprintf(out, " size : %d %d\n",
ov511->frame[i].width, ov511->frame[i].height);
out += sprintf(out, " format : ");
for (j = 0; plist[j].num >= 0; j++) {
if (plist[j].num == ov511->frame[i].format) {
out += sprintf(out, "%s\n", plist[j].name);
break;
}
}
if (plist[j].num < 0)
out += sprintf(out, "unknown\n");
out += sprintf(out, " data_buffer : 0x%p\n",
ov511->frame[i].data);
}
out += sprintf(out, "snap_enabled : %s\n",
YES_NO(ov511->snap_enabled));
out += sprintf(out, "bridge : %s\n",
ov511->bridge == BRG_OV511 ? "OV511" :
ov511->bridge == BRG_OV511PLUS ? "OV511+" :
ov511->bridge == BRG_OV518 ? "OV518" :
ov511->bridge == BRG_OV518PLUS ? "OV518+" :
"unknown");
out += sprintf(out, "sensor : %s\n",
ov511->sensor == SEN_OV6620 ? "OV6620" :
ov511->sensor == SEN_OV6630 ? "OV6630" :
ov511->sensor == SEN_OV7610 ? "OV7610" :
ov511->sensor == SEN_OV7620 ? "OV7620" :
ov511->sensor == SEN_OV7620AE ? "OV7620AE" :
ov511->sensor == SEN_OV8600 ? "OV8600" :
ov511->sensor == SEN_KS0127 ? "KS0127" :
ov511->sensor == SEN_KS0127B ? "KS0127B" :
ov511->sensor == SEN_SAA7111A ? "SAA7111A" :
"unknown");
out += sprintf(out, "packet_size : %d\n", ov511->packet_size);
out += sprintf(out, "framebuffer : 0x%p\n", ov511->fbuf);
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 *ov511 = data;
if (!ov511 || !ov511->dev)
return -ENODEV;
status = ov51x_check_snapshot(ov511);
out += sprintf(out, "%d", status);
if (status)
ov51x_clear_snapshot(ov511);
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 *ov511)
{
char dirname[4];
if (!ov511_proc_entry || !ov511)
return;
/* Create per-device directory */
sprintf(dirname, "%d", ov511->vdev.minor);
PDEBUG(4, "creating /proc/video/ov511/%s/", dirname);
ov511->proc_devdir = create_proc_entry(dirname, S_IFDIR,
ov511_proc_entry);
if (!ov511->proc_devdir)
return;
/* Create "info" entry (human readable device information) */
PDEBUG(4, "creating /proc/video/ov511/%s/info", dirname);
ov511->proc_info = create_proc_read_entry("info",
S_IFREG|S_IRUGO|S_IWUSR, ov511->proc_devdir,
ov511_read_proc_info, ov511);
if (!ov511->proc_info)
return;
/* 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);
ov511->proc_button = create_proc_read_entry("button",
S_IFREG|S_IRUGO|S_IWUSR, ov511->proc_devdir,
ov511_read_proc_button, ov511);
if (!ov511->proc_button)
return;
}
/* Create "control" entry (ioctl() interface) */
PDEBUG(4, "creating /proc/video/ov511/%s/control", dirname);
lock_kernel();
ov511->proc_control = create_proc_entry("control",
S_IFREG|S_IRUGO|S_IWUSR, ov511->proc_devdir);
if (!ov511->proc_control) {
unlock_kernel();
return;
}
ov511->proc_control->data = ov511;
ov511->proc_control->proc_fops = &ov511_control_fops;
unlock_kernel();
}
static void
destroy_proc_ov511_cam(struct usb_ov511 *ov511)
{
char dirname[4];
if (!ov511 || !ov511->proc_devdir)
return;
sprintf(dirname, "%d", ov511->vdev.minor);
/* Destroy "control" entry */
if (ov511->proc_control) {
PDEBUG(4, "destroying /proc/video/ov511/%s/control", dirname);
remove_proc_entry("control", ov511->proc_devdir);
ov511->proc_control = NULL;
}
/* Destroy "button" entry */
if (ov511->proc_button) {
PDEBUG(4, "destroying /proc/video/ov511/%s/button", dirname);
remove_proc_entry("button", ov511->proc_devdir);
ov511->proc_button = NULL;
}
/* Destroy "info" entry */
if (ov511->proc_info) {
PDEBUG(4, "destroying /proc/video/ov511/%s/info", dirname);
remove_proc_entry("info", ov511->proc_devdir);
ov511->proc_info = NULL;
}
/* Destroy per-device directory */
PDEBUG(4, "destroying /proc/video/ov511/%s/", dirname);
remove_proc_entry(dirname, ov511_proc_entry);
ov511->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
*
**********************************************************************/
static int
ov511_reg_write(struct usb_device *dev, unsigned char reg, unsigned char value)
{
int rc;
PDEBUG(5, "0x%02X:0x%02X", reg, value);
rc = usb_control_msg(dev,
usb_sndctrlpipe(dev, 0),
2 /* REG_IO */,
USB_TYPE_CLASS | USB_RECIP_DEVICE,
0, (__u16)reg, &value, 1, HZ);
if (rc < 0)
err("reg write: error %d", rc);
return rc;
}
/* returns: negative is error, pos or zero is data */
static int
ov511_reg_read(struct usb_device *dev, unsigned char reg)
{
int rc;
unsigned char buffer[1];
rc = usb_control_msg(dev,
usb_rcvctrlpipe(dev, 0),
2 /* REG_IO */,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_DEVICE,
0, (__u16)reg, buffer, 1, HZ);
PDEBUG(5, "0x%02X:0x%02X", reg, buffer[0]);
if (rc < 0) {
err("reg read: error %d", rc);
return rc;
} else {
return buffer[0];
}
}
/*
* Writes bits at positions specified by mask to a 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
ov511_reg_write_mask(struct usb_device *dev,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int ret;
unsigned char oldval, newval;
ret = ov511_reg_read(dev, 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 (ov511_reg_write(dev, reg, newval));
}
/* Writes multiple (n) values to a single register. Only valid with certain
* registers (0x30 and 0xc4 - 0xce). Used for writing 16 and 24-bit values. */
static int
ov518_reg_write_multi(struct usb_device *dev,
unsigned char reg,
unsigned char *values,
int n)
{
int rc;
PDEBUG(5, "0x%02X:[multiple], n=%d", reg, n); // FIXME
if (values == NULL) {
err("reg write multiple: NULL buffer");
return -EINVAL;
}
rc = usb_control_msg(dev,
usb_sndctrlpipe(dev, 0),
2 /* REG_IO */,
USB_TYPE_CLASS | USB_RECIP_DEVICE,
0, (__u16)reg, values, n, HZ);
if (rc < 0)
err("reg write multiple: error %d", rc);
return rc;
}
static int
ov511_upload_quan_tables(struct usb_device *dev)
{
unsigned char *pYTable = yQuanTable511;
unsigned char *pUVTable = uvQuanTable511;
unsigned char val0, val1;
int i, rc, reg = OV511_OMNICE_Y_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 = ov511_reg_write(dev, reg, val0);
if (rc < 0)
return rc;
}
if (ENABLE_UV_QUANTABLE)
{
val0 = *pUVTable++;
val1 = *pUVTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = ov511_reg_write(dev, 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_device *dev)
{
unsigned char *pYTable = yQuanTable518;
unsigned char *pUVTable = uvQuanTable518;
unsigned char val0, val1;
int i, rc, reg = OV511_OMNICE_Y_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 = ov511_reg_write(dev, reg, val0);
if (rc < 0)
return rc;
}
if (ENABLE_UV_QUANTABLE)
{
val0 = *pUVTable++;
val1 = *pUVTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = ov511_reg_write(dev, reg + OV518_QUANTABLESIZE / 2,
val0);
if (rc < 0)
return rc;
}
reg++;
}
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 ov51x_i2c_write(). Note that this function
* always succeeds regardless of whether the sensor is present and working.
*/
static int
ov518_i2c_write_internal(struct usb_device *dev,
unsigned char reg,
unsigned char value)
{
int rc;
PDEBUG(5, "0x%02X:0x%02X", reg, value);
/* Select camera register */
rc = ov511_reg_write(dev, OV511_REG_I2C_SUB_ADDRESS_3_BYTE, reg);
if (rc < 0) goto error;
/* Write "value" to I2C data port of OV511 */
rc = ov511_reg_write(dev, OV511_REG_I2C_DATA_PORT, value);
if (rc < 0) goto error;
/* Initiate 3-byte write cycle */
rc = ov511_reg_write(dev, OV518_REG_I2C_CONTROL, 0x01);
if (rc < 0) goto error;
return 0;
error:
err("ov518 i2c write: error %d", rc);
return rc;
}
/* NOTE: Do not call this function directly! */
static int
ov511_i2c_write_internal(struct usb_device *dev,
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 = ov511_reg_write(dev, OV511_REG_I2C_SUB_ADDRESS_3_BYTE,
reg);
if (rc < 0) goto error;
/* Write "value" to I2C data port of OV511 */
rc = ov511_reg_write(dev, OV511_REG_I2C_DATA_PORT, value);
if (rc < 0) goto error;
/* Initiate 3-byte write cycle */
rc = ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x01);
if (rc < 0) goto error;
do rc = ov511_reg_read(dev, OV511_REG_I2C_CONTROL);
while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */
if (rc < 0) goto error;
if ((rc&2) == 0) /* Ack? */
break;
#if 0
/* I2C abort */
ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x10);
#endif
if (--retries < 0) {
err("i2c write retries exhausted");
rc = -1;
goto error;
}
}
return 0;
error:
err("i2c write: error %d", rc);
return rc;
}
/* NOTE: Do not call this function directly!
* The OV518 I2C I/O procedure is different, hence, this function.
* This is normally only called from ov51x_i2c_read(). Note that this function
* always succeeds regardless of whether the sensor is present and working.
*/
static int
ov518_i2c_read_internal(struct usb_device *dev, unsigned char reg)
{
int rc, value;
/* Select camera register */
rc = ov511_reg_write(dev, OV511_REG_I2C_SUB_ADDRESS_2_BYTE, reg);
if (rc < 0) goto error;
/* Initiate 2-byte write cycle */
rc = ov511_reg_write(dev, OV518_REG_I2C_CONTROL, 0x03);
if (rc < 0) goto error;
/* Initiate 2-byte read cycle */
rc = ov511_reg_write(dev, OV518_REG_I2C_CONTROL, 0x05);
if (rc < 0) goto error;
value = ov511_reg_read(dev, OV511_REG_I2C_DATA_PORT);
PDEBUG(5, "0x%02X:0x%02X", reg, value);
return value;
error:
err("ov518 i2c read: error %d", rc);
return rc;
}
/* NOTE: Do not call this function directly!
* returns: negative is error, pos or zero is data */
static int
ov511_i2c_read_internal(struct usb_device *dev, unsigned char reg)
{
int rc, value, retries;
/* Two byte write cycle */
for (retries = OV511_I2C_RETRIES; ; ) {
/* Select camera register */
rc = ov511_reg_write(dev, OV511_REG_I2C_SUB_ADDRESS_2_BYTE,
reg);
if (rc < 0) goto error;
/* Initiate 2-byte write cycle */
rc = ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x03);
if (rc < 0) goto error;
do rc = ov511_reg_read(dev, OV511_REG_I2C_CONTROL);
while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */
if (rc < 0) goto error;
if ((rc&2) == 0) /* Ack? */
break;
/* I2C abort */
ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x10);
if (--retries < 0) {
err("i2c write retries exhausted");
rc = -1;
goto error;
}
}
/* Two byte read cycle */
for (retries = OV511_I2C_RETRIES; ; ) {
/* Initiate 2-byte read cycle */
rc = ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x05);
if (rc < 0) goto error;
do rc = ov511_reg_read(dev, OV511_REG_I2C_CONTROL);
while (rc > 0 && ((rc&1) == 0)); /* Retry until idle */
if (rc < 0) goto error;
if ((rc&2) == 0) /* Ack? */
break;
/* I2C abort */
rc = ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x10);
if (rc < 0) goto error;
if (--retries < 0) {
err("i2c read retries exhausted");
rc = -1;
goto error;
}
}
value = ov511_reg_read(dev, OV511_REG_I2C_DATA_PORT);
PDEBUG(5, "0x%02X:0x%02X", reg, value);
/* This is needed to make ov51x_i2c_write() work */
rc = ov511_reg_write(dev, OV511_REG_I2C_CONTROL, 0x05);
if (rc < 0)
goto error;
return value;
error:
err("i2c read: error %d", rc);
return rc;
}
/* returns: negative is error, pos or zero is data */
static int
ov51x_i2c_read(struct usb_ov511 *ov511, unsigned char reg)
{
int rc;
struct usb_device *dev = ov511->dev;
down(&ov511->i2c_lock);
if (dev->descriptor.idProduct == PROD_OV518 ||
dev->descriptor.idProduct == PROD_OV518PLUS)
rc = ov518_i2c_read_internal(dev, reg);
else
rc = ov511_i2c_read_internal(dev, reg);
up(&ov511->i2c_lock);
return rc;
}
static int
ov51x_i2c_write(struct usb_ov511 *ov511,
unsigned char reg,
unsigned char value)
{
int rc;
struct usb_device *dev = ov511->dev;
down(&ov511->i2c_lock);
if (dev->descriptor.idProduct == PROD_OV518 ||
dev->descriptor.idProduct == PROD_OV518PLUS)
rc = ov518_i2c_write_internal(dev, reg, value);
else
rc = ov511_i2c_write_internal(dev, reg, value);
up(&ov511->i2c_lock);
return rc;
}
/* Do not call this function directly! */
static int
ov51x_i2c_write_mask_internal(struct usb_device *dev,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc;
unsigned char oldval, newval;
if (mask == 0xff) {
newval = value;
} else {
if (dev->descriptor.idProduct == PROD_OV518 ||
dev->descriptor.idProduct == PROD_OV518PLUS)
rc = ov518_i2c_read_internal(dev, reg);
else
rc = ov511_i2c_read_internal(dev, 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 (dev->descriptor.idProduct == PROD_OV518 ||
dev->descriptor.idProduct == PROD_OV518PLUS)
return (ov518_i2c_write_internal(dev, reg, newval));
else
return (ov511_i2c_write_internal(dev, 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
ov51x_i2c_write_mask(struct usb_ov511 *ov511,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc;
struct usb_device *dev = ov511->dev;
down(&ov511->i2c_lock);
rc = ov51x_i2c_write_mask_internal(dev, reg, value, mask);
up(&ov511->i2c_lock);
return rc;
}
/* Write to a specific I2C slave ID and register, using the specified mask */
static int
ov51x_i2c_write_slave(struct usb_ov511 *ov511,
unsigned char slave,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc = 0;
struct usb_device *dev = ov511->dev;
down(&ov511->i2c_lock);
/* Set new slave IDs */
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_WRITE, slave) < 0) {
rc = -EIO;
goto out;
}
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_READ, slave + 1) < 0) {
rc = -EIO;
goto out;
}
rc = ov51x_i2c_write_mask_internal(dev, reg, value, mask);
/* Don't bail out yet if error; IDs must be restored */
/* Restore primary IDs */
slave = ov511->primary_i2c_slave;
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_WRITE, slave) < 0) {
rc = -EIO;
goto out;
}
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_READ, slave + 1) < 0) {
rc = -EIO;
goto out;
}
out:
up(&ov511->i2c_lock);
return rc;
}
/* Read from a specific I2C slave ID and register */
static int
ov51x_i2c_read_slave(struct usb_ov511 *ov511,
unsigned char slave,
unsigned char reg)
{
int rc;
struct usb_device *dev = ov511->dev;
down(&ov511->i2c_lock);
/* Set new slave IDs */
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_WRITE, slave) < 0) {
rc = -EIO;
goto out;
}
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_READ, slave + 1) < 0) {
rc = -EIO;
goto out;
}
if (dev->descriptor.idProduct == PROD_OV518 ||
dev->descriptor.idProduct == PROD_OV518PLUS)
rc = ov518_i2c_read_internal(dev, reg);
else
rc = ov511_i2c_read_internal(dev, reg);
/* Don't bail out yet if error; IDs must be restored */
/* Restore primary IDs */
slave = ov511->primary_i2c_slave;
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_WRITE, slave) < 0) {
rc = -EIO;
goto out;
}
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_READ, slave + 1) < 0) {
rc = -EIO;
goto out;
}
out:
up(&ov511->i2c_lock);
return rc;
}
static int
ov511_write_regvals(struct usb_ov511 *ov511,
struct ov511_regvals * pRegvals)
{
int rc;
struct usb_device *dev = ov511->dev;
while (pRegvals->bus != OV511_DONE_BUS) {
if (pRegvals->bus == OV511_REG_BUS) {
if ((rc = ov511_reg_write(dev, pRegvals->reg,
pRegvals->val)) < 0)
goto error;
} else if (pRegvals->bus == OV511_I2C_BUS) {
if ((rc = ov51x_i2c_write(ov511, pRegvals->reg,
pRegvals->val)) < 0)
goto error;
} else {
err("Bad regval array");
rc = -1;
goto error;
}
pRegvals++;
}
return 0;
error:
err("write regvals: error %d", rc);
return rc;
}
#ifdef OV511_DEBUG
static void
ov511_dump_i2c_range(struct usb_ov511 *ov511, int reg1, int regn)
{
int i;
int rc;
for (i = reg1; i <= regn; i++) {
rc = ov51x_i2c_read(ov511, i);
info("OV7610[0x%X] = 0x%X", i, rc);
}
}
static void
ov51x_dump_i2c_regs(struct usb_ov511 *ov511)
{
info("I2C REGS");
ov511_dump_i2c_range(ov511, 0x00, 0x7C);
}
static void
ov511_dump_reg_range(struct usb_device *dev, int reg1, int regn)
{
int i;
int rc;
for (i = reg1; i <= regn; i++) {
rc = ov511_reg_read(dev, i);
info("OV511[0x%X] = 0x%X", i, rc);
}
}
static void
ov511_dump_regs(struct usb_device *dev)
{
info("CAMERA INTERFACE REGS");
ov511_dump_reg_range(dev, 0x10, 0x1f);
info("DRAM INTERFACE REGS");
ov511_dump_reg_range(dev, 0x20, 0x23);
info("ISO FIFO REGS");
ov511_dump_reg_range(dev, 0x30, 0x31);
info("PIO REGS");
ov511_dump_reg_range(dev, 0x38, 0x39);
ov511_dump_reg_range(dev, 0x3e, 0x3e);
info("I2C REGS");
ov511_dump_reg_range(dev, 0x40, 0x49);
info("SYSTEM CONTROL REGS");
ov511_dump_reg_range(dev, 0x50, 0x55);
ov511_dump_reg_range(dev, 0x5e, 0x5f);
info("OmniCE REGS");
ov511_dump_reg_range(dev, 0x70, 0x79);
/* NOTE: Quantization tables are not readable. You will get the value
* in reg. 0x79 for every table register */
ov511_dump_reg_range(dev, 0x80, 0x9f);
ov511_dump_reg_range(dev, 0xa0, 0xbf);
}
#endif
/**********************************************************************
*
* Kernel I2C Interface
*
**********************************************************************/
/* For as-yet unimplemented I2C interface */
static void
call_i2c_clients(struct usb_ov511 *ov511, unsigned int cmd,
void *arg)
{
/* Do nothing */
}
/*****************************************************************************/
static int
ov511_reset(struct usb_ov511 *ov511, unsigned char reset_type)
{
int rc;
/* Setting bit 0 not allowed on 518/518Plus */
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
reset_type &= 0xfe;
PDEBUG(4, "Reset: type=0x%X", reset_type);
rc = ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_RESET, reset_type);
rc = ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_RESET, 0);
if (rc < 0)
err("reset: command failed");
return rc;
}
/* Temporarily stops OV511 from functioning. Must do this before changing
* registers while the camera is streaming */
static inline int
ov511_stop(struct usb_ov511 *ov511)
{
PDEBUG(4, "stopping");
ov511->stopped = 1;
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
return (ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_RESET,
0x3a));
else
return (ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_RESET,
0x3d));
}
/* Restarts OV511 after ov511_stop() is called. Has no effect if it is not
* actually stopped (for performance). */
static inline int
ov511_restart(struct usb_ov511 *ov511)
{
if (ov511->stopped) {
PDEBUG(4, "restarting");
ov511->stopped = 0;
/* Reinitialize the stream */
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
ov511_reg_write(ov511->dev, 0x2f, 0x80);
return (ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_RESET,
0x00));
}
return 0;
}
/* Resets the hardware snapshot button */
static void
ov51x_clear_snapshot(struct usb_ov511 *ov511)
{
if (ov511->bridge == BRG_OV511 || ov511->bridge == BRG_OV511PLUS) {
ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_SNAPSHOT, 0x01);
ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_SNAPSHOT, 0x03);
ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_SNAPSHOT, 0x01);
} else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
warn("snapshot reset not supported yet on OV518(+)");
} else {
err("clear snap: invalid bridge type");
}
}
/* 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 *ov511)
{
int ret, status = 0;
if (ov511->bridge == BRG_OV511 || ov511->bridge == BRG_OV511PLUS) {
ret = ov511_reg_read(ov511->dev, OV511_REG_SYSTEM_SNAPSHOT);
if (ret < 0) {
err("Error checking snspshot status (%d)", ret);
} else if (ret & 0x08) {
status = 1;
}
} else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
warn("snapshot check not supported yet on OV518(+)");
} else {
err("check snap: invalid bridge type");
}
return status;
}
/* Sets I2C read and write slave IDs. Returns <0 for error */
static int
ov51x_set_slave_ids(struct usb_ov511 *ov511,
unsigned char write_id,
unsigned char read_id)
{
struct usb_device *dev = ov511->dev;
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_WRITE, write_id) < 0)
return -EIO;
if (ov511_reg_write(dev, OV511_REG_I2C_SLAVE_ID_READ, read_id) < 0)
return -EIO;
if (ov511_reset(ov511, OV511_RESET_NOREGS) < 0)
return -EIO;
return 0;
}
/* This does an initial reset of an OmniVision sensor and ensures that I2C
* is synchronized. Returns <0 for failure.
*/
static int
ov51x_init_ov_sensor(struct usb_ov511 *ov511)
{
int i, success;
/* Reset the sensor */
if (ov51x_i2c_write(ov511, 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 ((ov51x_i2c_read(ov511, OV7610_REG_ID_HIGH) == 0x7F) &&
(ov51x_i2c_read(ov511, OV7610_REG_ID_LOW) == 0xA2)) {
success = 1;
continue;
}
/* Reset the sensor */
if (ov51x_i2c_write(ov511, 0x12, 0x80) < 0) return -EIO;
/* Wait for it to initialize */
schedule_timeout(1 + 150 * HZ / 1000);
/* Dummy read to sync I2C */
if (ov51x_i2c_read(ov511, 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 *ov511, int size)
{
int alt, mult;
if (ov511_stop(ov511) < 0)
return -EIO;
mult = size >> 5;
if (ov511->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 (ov511->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 if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
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, "set packet size: %d, mult=%d, alt=%d", size, mult, alt);
// FIXME: Don't know how to do this on OV518 yet
if (ov511->bridge != BRG_OV518 &&
ov511->bridge != BRG_OV518PLUS) {
if (ov511_reg_write(ov511->dev, OV511_REG_FIFO_PACKET_SIZE,
mult) < 0) {
return -EIO;
}
}
if (usb_set_interface(ov511->dev, ov511->iface, alt) < 0) {
err("Set packet size: set interface error");
return -EBUSY;
}
/* Initialize the stream */
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
if (ov511_reg_write(ov511->dev, 0x2f, 0x80) < 0)
return -EIO;
// FIXME - Should we only reset the FIFO?
if (ov511_reset(ov511, OV511_RESET_NOREGS) < 0)
return -EIO;
ov511->packet_size = size;
if (ov511_restart(ov511) < 0)
return -EIO;
return 0;
}
/* Upload compression params and quantization tables. Returns 0 for success. */
static int
ov511_init_compression(struct usb_ov511 *ov511)
{
struct usb_device *dev = ov511->dev;
int rc = 0;
if (!ov511->compress_inited) {
ov511_reg_write(dev, 0x70, phy);
ov511_reg_write(dev, 0x71, phuv);
ov511_reg_write(dev, 0x72, pvy);
ov511_reg_write(dev, 0x73, pvuv);
ov511_reg_write(dev, 0x74, qhy);
ov511_reg_write(dev, 0x75, qhuv);
ov511_reg_write(dev, 0x76, qvy);
ov511_reg_write(dev, 0x77, qvuv);
if (ov511_upload_quan_tables(dev) < 0) {
err("Error uploading quantization tables");
rc = -EIO;
goto out;
}
}
ov511->compress_inited = 1;
out:
return rc;
}
/* Upload compression params and quantization tables. Returns 0 for success. */
static int
ov518_init_compression(struct usb_ov511 *ov511)
{
struct usb_device *dev = ov511->dev;
int rc = 0;
if (!ov511->compress_inited) {
if (ov518_upload_quan_tables(dev) < 0) {
err("Error uploading quantization tables");
rc = -EIO;
goto out;
}
}
ov511->compress_inited = 1;
out:
return rc;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's contrast setting to "val" */
static int
sensor_set_contrast(struct usb_ov511 *ov511, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov511->stop_during_set)
if (ov511_stop(ov511) < 0)
return -EIO;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
{
rc = ov51x_i2c_write(ov511, OV7610_REG_CNT, val >> 8);
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 = ov51x_i2c_write(ov511, 0x64, ctab[val>>12]);
if (rc < 0)
goto out;
break;
}
case SEN_SAA7111A:
{
rc = ov51x_i2c_write(ov511, 0x0b, val >> 9);
if (rc < 0)
goto out;
break;
}
default:
{
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
}
rc = 0; /* Success */
ov511->contrast = val;
out:
if (ov511_restart(ov511) < 0)
return -EIO;
return rc;
}
/* Gets sensor's contrast setting */
static int
sensor_get_contrast(struct usb_ov511 *ov511, unsigned short *val)
{
int rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_read(ov511, OV7610_REG_CNT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_OV7620:
/* Use Y gamma reg instead. Bit 0 is the enable bit. */
rc = ov51x_i2c_read(ov511, 0x64);
if (rc < 0)
return rc;
else
*val = (rc & 0xfe) << 8;
break;
case SEN_SAA7111A:
*val = ov511->contrast;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov511->contrast = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's brightness setting to "val" */
static int
sensor_set_brightness(struct usb_ov511 *ov511, unsigned short val)
{
int rc;
PDEBUG(4, "%d", val);
if (ov511->stop_during_set)
if (ov511_stop(ov511) < 0)
return -EIO;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620AE:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_write(ov511, 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 (!ov511->auto_brt) {
rc = ov51x_i2c_write(ov511, OV7610_REG_BRT, val >> 8);
if (rc < 0)
goto out;
}
break;
case SEN_SAA7111A:
rc = ov51x_i2c_write(ov511, 0x0a, val >> 8);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov511->brightness = val;
out:
if (ov511_restart(ov511) < 0)
return -EIO;
return rc;
}
/* Gets sensor's brightness setting */
static int
sensor_get_brightness(struct usb_ov511 *ov511, unsigned short *val)
{
int rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620AE:
case SEN_OV7620:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_read(ov511, OV7610_REG_BRT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov511->brightness;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov511->brightness = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's saturation (color intensity) setting to "val" */
static int
sensor_set_saturation(struct usb_ov511 *ov511, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov511->stop_during_set)
if (ov511_stop(ov511) < 0)
return -EIO;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620AE:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_write(ov511, 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 = ov511_i2c_write(ov511->dev, 0x62, (val >> 9) & 0x7e);
// if (rc < 0)
// goto out;
rc = ov51x_i2c_write(ov511, OV7610_REG_SAT, val >> 8);
if (rc < 0)
goto out;
break;
case SEN_SAA7111A:
rc = ov51x_i2c_write(ov511, 0x0c, val >> 9);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov511->colour = val;
out:
if (ov511_restart(ov511) < 0)
return -EIO;
return rc;
}
/* Gets sensor's saturation (color intensity) setting */
static int
sensor_get_saturation(struct usb_ov511 *ov511, unsigned short *val)
{
int rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620AE:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_read(ov511, 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 = ov51x_i2c_read(ov511, 0x62);
// if (rc < 0)
// return rc;
// else
// *val = (rc & 0x7e) << 9;
rc = ov51x_i2c_read(ov511, OV7610_REG_SAT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov511->colour;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov511->colour = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's hue (red/blue balance) setting to "val" */
static int
sensor_set_hue(struct usb_ov511 *ov511, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov511->stop_during_set)
if (ov511_stop(ov511) < 0)
return -EIO;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_write(ov511, OV7610_REG_RED, 0xFF - (val >> 8));
if (rc < 0)
goto out;
rc = ov51x_i2c_write(ov511, 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 = ov51x_i2c_write(ov511, 0x7a,
(unsigned char)(val >> 8) + 0xb);
if (rc < 0)
goto out;
rc = ov51x_i2c_write(ov511, 0x79,
(unsigned char)(val >> 8) + 0xb);
if (rc < 0)
goto out;
#endif
break;
case SEN_SAA7111A:
rc = ov51x_i2c_write(ov511, 0x0d, (val + 32768) >> 8);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov511->hue = val;
out:
if (ov511_restart(ov511) < 0)
return -EIO;
return rc;
}
/* Gets sensor's hue (red/blue balance) setting */
static int
sensor_get_hue(struct usb_ov511 *ov511, unsigned short *val)
{
int rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
rc = ov51x_i2c_read(ov511, OV7610_REG_BLUE);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_OV7620:
rc = ov51x_i2c_read(ov511, 0x7a);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov511->hue;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov511->hue = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
static inline int
sensor_set_picture(struct usb_ov511 *ov511, struct video_picture *p)
{
int rc;
PDEBUG(4, "sensor_set_picture");
ov511->whiteness = p->whiteness;
/* Don't return error if a setting is unsupported, or rest of settings
* will not be performed */
rc = sensor_set_contrast(ov511, p->contrast);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_brightness(ov511, p->brightness);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_saturation(ov511, p->colour);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_hue(ov511, p->hue);
if (FATAL_ERROR(rc))
return rc;
return 0;
}
static inline int
sensor_get_picture(struct usb_ov511 *ov511, 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(ov511, &(p->contrast));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_brightness(ov511, &(p->brightness));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_saturation(ov511, &(p->colour));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_hue(ov511, &(p->hue));
if (FATAL_ERROR(rc))
return rc;
p->whiteness = 105 << 8;
/* Can we get these from frame[0]? -claudio? */
p->depth = ov511->frame[0].depth;
p->palette = ov511->frame[0].format;
return 0;
}
// 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 *ov511, unsigned char val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov511->stop_during_set)
if (ov511_stop(ov511) < 0)
return -EIO;
switch (ov511->sensor) {
case SEN_OV6620:
case SEN_OV6630:
case SEN_OV7610:
case SEN_OV7620:
case SEN_OV7620AE:
case SEN_OV8600:
rc = ov51x_i2c_write(ov511, 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 */
ov511->exposure = val;
out:
if (ov511_restart(ov511) < 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 *ov511, unsigned char *val)
{
int rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
case SEN_OV7620:
case SEN_OV7620AE:
case SEN_OV8600:
rc = ov51x_i2c_read(ov511, 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);
ov511->exposure = *val;
return 0;
}
/* Turns on or off the LED. Only has an effect with OV511+/OV518(+) */
static inline void
ov51x_led_control(struct usb_ov511 *ov511, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov511->bridge == BRG_OV511PLUS)
ov511_reg_write(ov511->dev, OV511_REG_SYSTEM_LED_CTL,
enable ? 1 : 0);
else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
ov511_reg_write_mask(ov511->dev, OV518_REG_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, OV7620AE, OV6620
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_light_freq(struct usb_ov511 *ov511, 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 (ov511->sensor) {
case SEN_OV7610:
ov51x_i2c_write_mask(ov511, 0x2a, sixty?0x00:0x80, 0x80);
ov51x_i2c_write(ov511, 0x2b, sixty?0x00:0xac);
ov51x_i2c_write_mask(ov511, 0x13, 0x10, 0x10);
ov51x_i2c_write_mask(ov511, 0x13, 0x00, 0x10);
break;
case SEN_OV7620:
case SEN_OV7620AE:
case SEN_OV8600:
ov51x_i2c_write_mask(ov511, 0x2a, sixty?0x00:0x80, 0x80);
ov51x_i2c_write(ov511, 0x2b, sixty?0x00:0xac);
ov51x_i2c_write_mask(ov511, 0x76, 0x01, 0x01);
break;
case SEN_OV6620:
case SEN_OV6630:
ov51x_i2c_write(ov511, 0x2b, sixty?0xa8:0x28);
ov51x_i2c_write(ov511, 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;
}
ov511->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, OV7620AE, OV6620.
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static inline int
sensor_set_banding_filter(struct usb_ov511 *ov511, int enable)
{
int rc;
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov511->sensor == SEN_KS0127 || ov511->sensor == SEN_KS0127B
|| ov511->sensor == SEN_SAA7111A) {
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
}
rc = ov51x_i2c_write_mask(ov511, 0x2d, enable?0x04:0x00, 0x04);
if (rc < 0)
return rc;
ov511->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 *ov511, int enable)
{
int rc;
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov511->sensor == SEN_KS0127 || ov511->sensor == SEN_KS0127B
|| ov511->sensor == SEN_SAA7111A) {
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
}
rc = ov51x_i2c_write_mask(ov511, 0x2d, enable?0x10:0x00, 0x10);
if (rc < 0)
return rc;
ov511->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 *ov511, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
switch (ov511->sensor) {
case SEN_OV7610:
ov51x_i2c_write_mask(ov511, 0x29, enable?0x00:0x80, 0x80);
break;
case SEN_OV6620:
case SEN_OV7620:
case SEN_OV7620AE:
case SEN_OV8600:
ov51x_i2c_write_mask(ov511, 0x13, enable?0x01:0x00, 0x01);
break;
case SEN_OV6630:
ov51x_i2c_write_mask(ov511, 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;
}
ov511->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, OV7620AE, KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_backlight(struct usb_ov511 *ov511, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
switch (ov511->sensor) {
case SEN_OV7620:
case SEN_OV8600:
ov51x_i2c_write_mask(ov511, 0x68, enable?0xe0:0xc0, 0xe0);
ov51x_i2c_write_mask(ov511, 0x29, enable?0x08:0x00, 0x08);
ov51x_i2c_write_mask(ov511, 0x28, enable?0x02:0x00, 0x02);
break;
case SEN_OV6620:
ov51x_i2c_write_mask(ov511, 0x4e, enable?0xe0:0xc0, 0xe0);
ov51x_i2c_write_mask(ov511, 0x29, enable?0x08:0x00, 0x08);
ov51x_i2c_write_mask(ov511, 0x0e, enable?0x80:0x00, 0x80);
break;
case SEN_OV6630:
ov51x_i2c_write_mask(ov511, 0x4e, enable?0x80:0x60, 0xe0);
ov51x_i2c_write_mask(ov511, 0x29, enable?0x08:0x00, 0x08);
ov51x_i2c_write_mask(ov511, 0x28, enable?0x02:0x00, 0x02);
break;
case SEN_OV7610:
case SEN_OV7620AE:
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;
}
ov511->backlight = 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
ov511_get_depth(int palette)
{
switch (palette) {
case VIDEO_PALETTE_GREY: return 8;
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_YUV420: return 12;
case VIDEO_PALETTE_YUV422P: return 16; /* Planar */
case VIDEO_PALETTE_YUV420P: return 12; /* 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
* ov511_get_depth(frame->format)) >> 3);
}
static int
mode_init_ov_sensor_regs(struct usb_ov511 *ov511, int width, int height,
int mode, int sub_flag, int qvga)
{
int clock;
/******** Mode (VGA/QVGA) and sensor specific regs ********/
switch (ov511->sensor) {
case SEN_OV7610:
ov51x_i2c_write(ov511, 0x14, qvga?0x24:0x04);
// FIXME: Does this improve the image quality or frame rate?
#if 0
ov51x_i2c_write_mask(ov511, 0x28, qvga?0x00:0x20, 0x20);
ov51x_i2c_write(ov511, 0x24, 0x10);
ov51x_i2c_write(ov511, 0x25, qvga?0x40:0x8a);
ov51x_i2c_write(ov511, 0x2f, qvga?0x30:0xb0);
ov51x_i2c_write(ov511, 0x35, qvga?0x1c:0x9c);
#endif
break;
case SEN_OV7620:
// ov51x_i2c_write(ov511, 0x2b, 0x00);
ov51x_i2c_write(ov511, 0x14, qvga?0xa4:0x84);
ov51x_i2c_write_mask(ov511, 0x28, qvga?0x00:0x20, 0x20);
ov51x_i2c_write(ov511, 0x24, qvga?0x20:0x3a);
ov51x_i2c_write(ov511, 0x25, qvga?0x30:0x60);
ov51x_i2c_write_mask(ov511, 0x2d, qvga?0x40:0x00, 0x40);
ov51x_i2c_write_mask(ov511, 0x67, qvga?0xf0:0x90, 0xf0);
ov51x_i2c_write_mask(ov511, 0x74, qvga?0x20:0x00, 0x20);
break;
case SEN_OV7620AE:
// ov51x_i2c_write(ov511, 0x2b, 0x00);
ov51x_i2c_write(ov511, 0x14, qvga?0xa4:0x84);
// FIXME: Enable this once 7620AE uses 7620 initial settings
#if 0
ov51x_i2c_write_mask(ov511, 0x28, qvga?0x00:0x20, 0x20);
ov51x_i2c_write(ov511, 0x24, qvga?0x20:0x3a);
ov51x_i2c_write(ov511, 0x25, qvga?0x30:0x60);
ov51x_i2c_write_mask(ov511, 0x2d, qvga?0x40:0x00, 0x40);
ov51x_i2c_write_mask(ov511, 0x67, qvga?0xb0:0x90, 0xf0);
ov51x_i2c_write_mask(ov511, 0x74, qvga?0x20:0x00, 0x20);
#endif
break;
case SEN_OV6620:
case SEN_OV6630:
ov51x_i2c_write(ov511, 0x14, qvga?0x24:0x04);
/* No special settings yet */
break;
default:
err("Invalid sensor");
return -EINVAL;
}
/******** Palette-specific regs ********/
if (mode == VIDEO_PALETTE_GREY) {
if (ov511->sensor == SEN_OV7610
|| ov511->sensor == SEN_OV7620AE) {
/* these aren't valid on the OV6620/OV7620/6630? */
ov51x_i2c_write_mask(ov511, 0x0e, 0x40, 0x40);
}
ov51x_i2c_write_mask(ov511, 0x13, 0x20, 0x20);
} else {
if (ov511->sensor == SEN_OV7610
|| ov511->sensor == SEN_OV7620AE) {
/* not valid on the OV6620/OV7620/6630? */
ov51x_i2c_write_mask(ov511, 0x0e, 0x00, 0x40);
}
ov51x_i2c_write_mask(ov511, 0x13, 0x00, 0x20);
}
/******** Clock programming ********/
// FIXME: Test this with OV6630
/* The OV6620 needs special handling. This prevents the
* severe banding that normally occurs */
if (ov511->sensor == SEN_OV6620 || ov511->sensor == SEN_OV6630)
{
/* Clock down */
ov51x_i2c_write(ov511, 0x2a, 0x04);
if (ov511->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);
ov51x_i2c_write(ov511, 0x11, clock);
ov51x_i2c_write(ov511, 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. */
ov51x_i2c_write(ov511, 0x2d, 0x85);
}
else
{
if (ov511->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 ? ov511->subw * ov511->subh
: width * height)
* (mode == VIDEO_PALETTE_GREY ? 2 : 3) / 2)
/ 66000;
} else {
clock = clockdiv;
}
PDEBUG(4, "Setting clock divisor to %d", clock);
ov51x_i2c_write(ov511, 0x11, clock);
}
/******** Special Features ********/
if (framedrop >= 0)
ov51x_i2c_write(ov511, 0x16, framedrop);
/* We only have code to convert GBR -> RGB24 */
if ((mode == VIDEO_PALETTE_RGB24) && sensor_gbr)
ov51x_i2c_write_mask(ov511, 0x12, 0x08, 0x08);
else
ov51x_i2c_write_mask(ov511, 0x12, 0x00, 0x08);
/* Test Pattern */
ov51x_i2c_write_mask(ov511, 0x12, (testpat?0x02:0x00), 0x02);
/* Auto white balance */
// if (awb)
ov51x_i2c_write_mask(ov511, 0x12, 0x04, 0x04);
// else
// ov51x_i2c_write_mask(ov511, 0x12, 0x00, 0x04);
// This will go away as soon as ov511_mode_init_sensor_regs()
// is fully tested.
/* 7620/6620/6630? don't have register 0x35, so play it safe */
if (ov511->sensor == SEN_OV7610 ||
ov511->sensor == SEN_OV7620AE) {
if (width == 640 && height == 480)
ov51x_i2c_write(ov511, 0x35, 0x9e);
else
ov51x_i2c_write(ov511, 0x35, 0x1e);
}
return 0;
}
static int
set_ov_sensor_window(struct usb_ov511 *ov511, 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 (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620AE:
hwsbase = 0x38;
hwebase = 0x3a;
vwsbase = vwebase = 0x05;
break;
case SEN_OV6620:
case SEN_OV6630: // FIXME: Is this right?
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 (ov511->sensor == SEN_OV6620 || ov511->sensor == SEN_OV6630) {
if (width > 176 && height > 144) { /* CIF */
ret = mode_init_ov_sensor_regs(ov511, 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(ov511, 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(ov511, 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(ov511, 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) {
ov51x_i2c_write(ov511, 0x17, hwsbase+(ov511->subx>>hwscale));
ov51x_i2c_write(ov511, 0x18,
hwebase+((ov511->subx+ov511->subw)>>hwscale));
ov51x_i2c_write(ov511, 0x19, vwsbase+(ov511->suby>>vwscale));
ov51x_i2c_write(ov511, 0x1a,
vwebase+((ov511->suby+ov511->subh)>>vwscale));
} else {
ov51x_i2c_write(ov511, 0x17, hwsbase + hoffset);
ov51x_i2c_write(ov511, 0x18,
hwebase + hoffset + (hwsize>>hwscale));
ov51x_i2c_write(ov511, 0x19, vwsbase + voffset);
ov51x_i2c_write(ov511, 0x1a,
vwebase + voffset + (vwsize>>vwscale));
}
#ifdef OV511_DEBUG
if (dump_sensor)
ov51x_dump_i2c_regs(ov511);
#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 *ov511,
int width, int height, int mode, int sub_flag)
{
int lncnt, pxcnt, rc = 0;
struct usb_device *dev = ov511->dev;
if (!ov511 || !dev)
return -EFAULT;
if (sub_flag) {
width = ov511->subw;
height = ov511->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 (ov511->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 supports 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 < ov511->minwidth || height < ov511->minheight) {
err("Requested dimensions are too small");
return -EINVAL;
}
if (ov511_stop(ov511) < 0)
return -EIO;
if (mode == VIDEO_PALETTE_GREY) {
ov511_reg_write(dev, 0x16, 0x00);
/* For snapshot */
ov511_reg_write(dev, 0x1e, 0x00);
ov511_reg_write(dev, 0x1f, 0x01);
} else {
ov511_reg_write(dev, 0x16, 0x01);
/* For snapshot */
ov511_reg_write(dev, 0x1e, 0x01);
ov511_reg_write(dev, 0x1f, 0x03);
}
/* Here I'm assuming that snapshot size == image size.
* I hope that's always true. --claudio
*/
pxcnt = (width >> 3) - 1;
lncnt = (height >> 3) - 1;
ov511_reg_write(dev, 0x12, pxcnt);
ov511_reg_write(dev, 0x13, lncnt);
ov511_reg_write(dev, 0x14, 0x00);
ov511_reg_write(dev, 0x15, 0x00);
ov511_reg_write(dev, 0x18, 0x03); /* YUV420, low pass filer on */
/* Snapshot additions */
ov511_reg_write(dev, 0x1a, pxcnt);
ov511_reg_write(dev, 0x1b, lncnt);
ov511_reg_write(dev, 0x1c, 0x00);
ov511_reg_write(dev, 0x1d, 0x00);
if (ov511->compress) {
ov511_reg_write(dev, 0x78, 0x07); // Turn on Y & UV compression
ov511_reg_write(dev, 0x79, 0x03); // Enable LUTs
ov511_reset(ov511, OV511_RESET_OMNICE);
}
//out:
if (ov511_restart(ov511) < 0)
return -EIO;
return rc;
}
static struct mode_list_518 mlist518[] = {
/* W H reg28 reg29 reg2a reg2c reg2e reg24 reg25 */
{ 352, 288, 0x00, 0x16, 0x48, 0x00, 0x00, 0x9f, 0x90 },
{ 320, 240, 0x00, 0x14, 0x3c, 0x10, 0x18, 0x9f, 0x90 },
{ 176, 144, 0x05, 0x0b, 0x24, 0x00, 0x00, 0xff, 0xf0 },
{ 160, 120, 0x05, 0x0a, 0x1e, 0x08, 0x0c, 0xff, 0xf0 },
{ 0, 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. Many register ops are commented out until we
* can find out if they are still valid. 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 *ov511,
int width, int height, int mode, int sub_flag)
{
int i;
struct usb_device *dev = ov511->dev;
unsigned char b[3]; /* Multiple-value reg buffer */
PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d",
width, height, mode, sub_flag);
if (ov511_stop(ov511) < 0)
return -EIO;
for (i = 0; mlist518[i].width; i++) {
// int lncnt, pxcnt;
if (width != mlist518[i].width || height != mlist518[i].height)
continue;
// FIXME: Subcapture won't be possible until we know what the registers do
// FIXME: We can't handle anything but YUV420 so far
// /* Here I'm assuming that snapshot size == image size.
// * I hope that's always true. --claudio
// */
// pxcnt = sub_flag ? (ov511->subw >> 3) - 1 : mlist[i].pxcnt;
// lncnt = sub_flag ? (ov511->subh >> 3) - 1 : mlist[i].lncnt;
//
// ov511_reg_write(dev, 0x12, pxcnt);
// ov511_reg_write(dev, 0x13, lncnt);
/******** Set the mode ********/
/* Mode independent regs */
ov511_reg_write(dev, 0x2b, 0x00);
ov511_reg_write(dev, 0x2d, 0x00);
ov511_reg_write(dev, 0x3b, 0x00);
ov511_reg_write(dev, 0x3d, 0x00);
/* Mode dependent regs. Regs 38 - 3e are always the same as
* regs 28 - 2e */
ov511_reg_write_mask(dev, 0x28, mlist518[i].reg28
| (mode == VIDEO_PALETTE_GREY) ? 0x80:0x00, 0x8f);
ov511_reg_write(dev, 0x29, mlist518[i].reg29);
ov511_reg_write(dev, 0x2a, mlist518[i].reg2a);
ov511_reg_write(dev, 0x2c, mlist518[i].reg2c);
ov511_reg_write(dev, 0x2e, mlist518[i].reg2e);
ov511_reg_write_mask(dev, 0x38, mlist518[i].reg28
| (mode == VIDEO_PALETTE_GREY) ? 0x80:0x00, 0x8f);
ov511_reg_write(dev, 0x39, mlist518[i].reg29);
ov511_reg_write(dev, 0x3a, mlist518[i].reg2a);
ov511_reg_write(dev, 0x3c, mlist518[i].reg2c);
ov511_reg_write(dev, 0x3e, mlist518[i].reg2e);
ov511_reg_write(dev, 0x24, mlist518[i].reg24);
ov511_reg_write(dev, 0x25, mlist518[i].reg25);
/* Windows driver does this here; who knows why */
ov511_reg_write(dev, 0x2f, 0x80);
/******** Set the framerate (to 15 FPS) ********/
/* Mode independent, but framerate dependent, regs */
/* These are for 15 FPS only */
ov511_reg_write(dev, 0x51, 0x08);
ov511_reg_write(dev, 0x22, 0x18);
ov511_reg_write(dev, 0x23, 0xff);
ov511_reg_write(dev, 0x71, 0x19); /* Compression-related? */
// FIXME: Sensor-specific
/* Bit 5 is what matters here. Of course, it is "reserved" */
ov51x_i2c_write(ov511, 0x54, 0x23);
ov511_reg_write(dev, 0x2f, 0x80);
/* Mode dependent regs */
if ((width == 352 && height == 288) ||
(width == 320 && height == 240)) {
b[0]=0x80; b[1]=0x02;
ov518_reg_write_multi(dev, 0x30, b, 2);
b[0]=0x90; b[1]=0x01;
ov518_reg_write_multi(dev, 0xc4, b, 2);
b[0]=0xf4; b[1]=0x01;
ov518_reg_write_multi(dev, 0xc6, b, 2);
b[0]=0xf4; b[1]=0x01;
ov518_reg_write_multi(dev, 0xc7, b, 2);
b[0]=0x8e; b[1]=0x00;
ov518_reg_write_multi(dev, 0xc8, b, 2);
b[0]=0x1a; b[1]=0x00; b[2]=0x02;
ov518_reg_write_multi(dev, 0xca, b, 3);
b[0]=0x14; b[1]=0x02;
ov518_reg_write_multi(dev, 0xcb, b, 2);
b[0]=0xd0; b[1]=0x07;
ov518_reg_write_multi(dev, 0xcc, b, 2);
b[0]=0x20; b[1]=0x00;
ov518_reg_write_multi(dev, 0xcd, b, 2);
b[0]=0x60; b[1]=0x02;
ov518_reg_write_multi(dev, 0xce, b, 2);
} else if ((width == 176 && height == 144) ||
(width == 160 && height == 120)) {
b[0]=0x80; b[1]=0x01;
ov518_reg_write_multi(dev, 0x30, b, 2);
b[0]=0xc8; b[1]=0x00;
ov518_reg_write_multi(dev, 0xc4, b, 2);
b[0]=0x40; b[1]=0x01;
ov518_reg_write_multi(dev, 0xc6, b, 2);
b[0]=0x40; b[1]=0x01;
ov518_reg_write_multi(dev, 0xc7, b, 2);
b[0]=0x60; b[1]=0x00;
ov518_reg_write_multi(dev, 0xc8, b, 2);
b[0]=0x0f; b[1]=0x33; b[2]=0x01;
ov518_reg_write_multi(dev, 0xca, b, 3);
b[0]=0x40; b[1]=0x01;
ov518_reg_write_multi(dev, 0xcb, b, 2);
b[0]=0xec; b[1]=0x04;
ov518_reg_write_multi(dev, 0xcc, b, 2);
b[0]=0x13; b[1]=0x00;
ov518_reg_write_multi(dev, 0xcd, b, 2);
b[0]=0x6d; b[1]=0x01;
ov518_reg_write_multi(dev, 0xce, b, 2);
} else {
/* Can't happen, since we already handled this case */
err("ov518_mode_init_regs(): **** logic error ****");
}
ov511_reg_write(dev, 0x2f, 0x80);
break;
}
if (ov511_restart(ov511) < 0)
return -EIO;
/* Reset it just for good measure */
if (ov511_reset(ov511, OV511_RESET_NOREGS) < 0)
return -EIO;
if (mlist518[i].width == 0) {
err("Unknown mode (%d, %d): %d", width, height, mode);
return -EINVAL;
}
return 0;
}
/* This is a wrapper around the OV511, OV518, and sensor specific functions */
static int
mode_init_regs(struct usb_ov511 *ov511,
int width, int height, int mode, int sub_flag)
{
int rc = 0;
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
rc = ov518_mode_init_regs(ov511, width, height, mode, sub_flag);
} else {
rc = ov511_mode_init_regs(ov511, width, height, mode, sub_flag);
}
if (FATAL_ERROR(rc))
return rc;
switch (ov511->sensor) {
case SEN_OV7610:
case SEN_OV7620:
case SEN_OV7620AE:
case SEN_OV8600:
case SEN_OV6620:
case SEN_OV6630:
rc = set_ov_sensor_window(ov511, 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(ov511, width, height, mode,
// sub_flag);
PDEBUG(1, "SAA status = 0X%x", ov51x_i2c_read(ov511, 0x1f));
break;
default:
err("Unknown sensor");
rc = -EINVAL;
}
if (FATAL_ERROR(rc))
return rc;
/* Sensor-independent settings */
rc = sensor_set_auto_brightness(ov511, ov511->auto_brt);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_auto_exposure(ov511, ov511->auto_exp);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_banding_filter(ov511, bandingfilter);
if (FATAL_ERROR(rc))
return rc;
if (ov511->lightfreq) {
rc = sensor_set_light_freq(ov511, lightfreq);
if (FATAL_ERROR(rc))
return rc;
}
rc = sensor_set_backlight(ov511, ov511->backlight);
if (FATAL_ERROR(rc))
return rc;
return 0;
}
/* This sets the default image parameters (Size = max, RGB24). This is
* useful for apps that use read() and do not set these.
*/
static int
ov51x_set_default_params(struct usb_ov511 *ov511)
{
int i;
PDEBUG(3, "%dx%d, RGB24", ov511->maxwidth, ov511->maxheight);
/* Set default sizes in case IOCTL (VIDIOCMCAPTURE) is not used
* (using read() instead). */
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].width = ov511->maxwidth;
ov511->frame[i].height = ov511->maxheight;
ov511->frame[i].bytes_read = 0;
if (force_palette)
ov511->frame[i].format = force_palette;
else
ov511->frame[i].format = VIDEO_PALETTE_RGB24;
ov511->frame[i].depth = ov511_get_depth(ov511->frame[i].format);
}
/* Initialize to max width/height, RGB24 */
if (mode_init_regs(ov511, ov511->maxwidth, ov511->maxheight,
ov511->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 *ov511, int input)
{
PDEBUG(4, "port %d", input);
switch (ov511->sensor) {
case SEN_SAA7111A:
{
/* Select mode */
ov51x_i2c_write_mask(ov511, 0x02, input, 0x07);
/* Bypass chrominance trap for modes 4..7 */
ov51x_i2c_write_mask(ov511, 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 *ov511, int input, char *name)
{
switch (ov511->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 *ov511, int norm)
{
PDEBUG(4, "%d", norm);
switch (ov511->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;
}
ov51x_i2c_write_mask(ov511, 0x08, reg_8, 0xc0);
ov51x_i2c_write_mask(ov511, 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
ov511_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
* array at pOut is specified by w.
*/
static inline void
ov511_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 (YUV400) images, data shows 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) {
ov511_make_8x8(pIn, pOut, frame->rawwidth);
pIn += 64;
pOut += 8;
}
pOutLine += 8 * frame->rawwidth;
}
}
/*
* For YUV4:2:0 images, the data shows 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 represents a 16 x 16 pixel
* area, but the Y data represents 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
* this data is 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) {
ov511_make_8x8(pIn, pOut, w);
ov511_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) {
ov511_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 ov511->decomp_ops
* accordingly. Returns -ENXIO if decompressor is not available, otherwise
* returns 0 if no other error.
*/
static int
ov51x_request_decompressor(struct usb_ov511 *ov511)
{
if (!ov511)
return -ENODEV;
if (ov511->decomp_ops) {
err("ERROR: Decompressor already requested!");
return -EINVAL;
}
lock_kernel();
/* Try to get MMX, and fall back on no-MMX if necessary */
if (ov511->bridge == BRG_OV511 || ov511->bridge == BRG_OV511PLUS) {
if (ov511_mmx_decomp_ops) {
PDEBUG(3, "Using OV511 MMX decompressor");
ov511->decomp_ops = ov511_mmx_decomp_ops;
} else if (ov511_decomp_ops) {
PDEBUG(3, "Using OV511 decompressor");
ov511->decomp_ops = ov511_decomp_ops;
} else {
err("No decompressor available");
}
} else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
if (ov518_mmx_decomp_ops) {
PDEBUG(3, "Using OV518 MMX decompressor");
ov511->decomp_ops = ov518_mmx_decomp_ops;
} else if (ov518_decomp_ops) {
PDEBUG(3, "Using OV518 decompressor");
ov511->decomp_ops = ov518_decomp_ops;
} else {
err("No decompressor available");
}
} else {
err("Unknown bridge");
}
if (ov511->decomp_ops) {
if (!ov511->decomp_ops->decomp_lock) {
ov511->decomp_ops = NULL;
unlock_kernel();
return -ENOSYS;
}
ov511->decomp_ops->decomp_lock();
unlock_kernel();
return 0;
} else {
unlock_kernel();
return -ENXIO;
}
}
/* Unlocks decompression module and nulls ov511->decomp_ops. Safe to call even
* if ov511->decomp_ops is NULL.
*/
static void
ov51x_release_decompressor(struct usb_ov511 *ov511)
{
int released = 0; /* Did we actually do anything? */
if (!ov511)
return;
lock_kernel();
if (ov511->decomp_ops && ov511->decomp_ops->decomp_unlock) {
ov511->decomp_ops->decomp_unlock();
released = 1;
}
ov511->decomp_ops = NULL;
unlock_kernel();
if (released)
PDEBUG(3, "Decompressor released");
}
static void
ov51x_decompress(struct usb_ov511 *ov511, struct ov511_frame *frame,
unsigned char *pIn0, unsigned char *pOut0)
{
if (!ov511->decomp_ops)
if (ov51x_request_decompressor(ov511))
return;
PDEBUG(4, "Decompressing %d bytes", frame->bytes_recvd);
if (frame->format == VIDEO_PALETTE_GREY
&& ov511->decomp_ops->decomp_400) {
int ret = ov511->decomp_ops->decomp_400(
pIn0,
pOut0,
frame->rawwidth,
frame->rawheight,
frame->bytes_recvd);
PDEBUG(4, "DEBUG: decomp_400 returned %d", ret);
} else if (ov511->decomp_ops->decomp_420) {
int ret = ov511->decomp_ops->decomp_420(
pIn0,
pOut0,
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;
ov511_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;
}
}
}
/* 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
ov511_postprocess(struct usb_ov511 *ov511, struct ov511_frame *frame)
{
if (dumppix) {
memset(frame->data, 0,
MAX_DATA_SIZE(ov511->maxwidth, ov511->maxheight));
PDEBUG(4, "Dumping %d bytes", frame->bytes_recvd);
memmove(frame->data, frame->rawdata, frame->bytes_recvd);
return;
}
/* YUV400 must be handled separately */
if (frame->format == VIDEO_PALETTE_GREY) {
/* Deinterlace frame, if necessary */
if (ov511->sensor == SEN_SAA7111A && frame->rawheight == 480) {
if (frame->compressed)
ov51x_decompress(ov511, 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)
ov51x_decompress(ov511, frame, frame->rawdata,
frame->data);
else
yuv400raw_to_yuv400p(frame, frame->rawdata,
frame->data);
}
return;
}
/* Process frame->data to frame->rawdata */
if (frame->compressed)
ov51x_decompress(ov511, frame, frame->rawdata, frame->tempdata);
else
yuv420raw_to_yuv420p(frame, frame->rawdata, frame->tempdata);
/* Deinterlace frame, if necessary */
if (ov511->sensor == SEN_SAA7111A && frame->rawheight == 480) {
memmove(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. */
#if 0
/* Clear output buffer for testing purposes */
memset(frame->data, 0, MAX_DATA_SIZE(frame->width, frame->height));
#endif
/* 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:
memmove(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 */
memmove(frame->data, frame->tempdata,
MAX_RAW_DATA_SIZE(frame->width, frame->height));
yuv420p_to_yuv422p(frame, frame->data);
break;
default:
err("Cannot convert data to this format");
}
if (fix_rgb_offset)
fixFrameRGBoffset(frame);
}
/**********************************************************************
*
* OV51x data transfer, IRQ handler
*
**********************************************************************/
static int
ov511_move_data(struct usb_ov511 *ov511, urb_t *urb)
{
unsigned char *cdata;
int data_size, num, offset, i, totlen = 0;
int aPackNum[FRAMES_PER_DESC];
struct ov511_frame *frame;
struct timeval *ts;
PDEBUG(5, "Moving %d packets", urb->number_of_packets);
data_size = ov511->packet_size - 1;
for (i = 0; i < urb->number_of_packets; i++) {
int n = urb->iso_frame_desc[i].actual_length;
int st = urb->iso_frame_desc[i].status;
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;
aPackNum[i] = n ? cdata[ov511->packet_size - 1] : -1;
if (!n || ov511->curframe == -1)
continue;
if (st)
PDEBUG(2, "data error: [%d] len=%d, status=%d", i, n, st);
frame = &ov511->frame[ov511->curframe];
/* 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("packet header (%3d): %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x",
cdata[ov511->packet_size - 1],
cdata[0], cdata[1], cdata[2], cdata[3], cdata[4], cdata[5],
cdata[6], cdata[7], cdata[8], cdata[9], cdata[10], cdata[11]);
}
/* Check for SOF/EOF packet */
if ((cdata[0] | cdata[1] | cdata[2] | cdata[3] |
cdata[4] | cdata[5] | cdata[6] | cdata[7]) ||
(~cdata[8] & 0x08))
goto check_middle;
/* Frame end */
if (cdata[8] & 0x80) {
ts = (struct timeval *)(frame->data
+ MAX_FRAME_SIZE(ov511->maxwidth, ov511->maxheight));
do_gettimeofday(ts);
/* Get the actual frame size from the EOF header */
frame->rawwidth = ((int)(cdata[9]) + 1) * 8;
frame->rawheight = ((int)(cdata[10]) + 1) * 8;
PDEBUG(4, "Frame end, curframe = %d, packnum=%d, hw=%d, vw=%d, recvd=%d",
ov511->curframe,
(int)(cdata[ov511->packet_size - 1]),
frame->rawwidth,
frame->rawheight,
frame->bytes_recvd);
/* Validate the header data */
RESTRICT_TO_RANGE(frame->rawwidth, ov511->minwidth, ov511->maxwidth);
RESTRICT_TO_RANGE(frame->rawheight, ov511->minheight, ov511->maxheight);
/* Don't allow byte count to exceed buffer size */
RESTRICT_TO_RANGE(frame->bytes_recvd,
8,
MAX_RAW_DATA_SIZE(ov511->maxwidth,
ov511->maxheight));
if (frame->scanstate == STATE_LINES) {
int iFrameNext;
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 */
iFrameNext = (ov511->curframe + 1) % OV511_NUMFRAMES;
if (ov511->frame[iFrameNext].grabstate == FRAME_READY
|| ov511->frame[iFrameNext].grabstate == FRAME_GRABBING) {
ov511->curframe = iFrameNext;
ov511->frame[iFrameNext].scanstate = STATE_SCANNING;
} else {
if (frame->grabstate == FRAME_DONE) {
PDEBUG(4, "Frame done! congratulations");
} else {
PDEBUG(4, "Frame not ready? state = %d",
ov511->frame[iFrameNext].grabstate);
}
ov511->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", ov511->curframe);
/* Check to see if it's a snapshot frame */
/* FIXME?? Should the snapshot reset go here? Performance? */
if (cdata[8] & 0x02) {
frame->snapshot = 1;
PDEBUG(3, "snapshot detected");
}
frame->scanstate = STATE_LINES;
frame->bytes_recvd = 0;
frame->compressed = cdata[8] & 0x40;
}
check_middle:
/* Are we in a frame? */
if (frame->scanstate != STATE_LINES) {
PDEBUG(5, "Not in a frame; packet skipped");
continue;
}
#if 0
/* Skip packet if first 9 bytes are zero. These are common, so
* we use a less expensive test here instead of later */
if (frame->compressed) {
int b, skip = 1;
for (b = 0; b < 9; b++) {
if (cdata[b])
skip=0;
}
if (skip) {
PDEBUG(5, "Skipping packet (all zero)");
continue;
}
}
#endif
/* 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_DATA_SIZE(ov511->maxwidth, ov511->maxheight))
memmove(frame->rawdata + frame->bytes_recvd - (n - 1),
&cdata[0], n - 1);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd
- MAX_RAW_DATA_SIZE(ov511->maxwidth,
ov511->maxheight));
} else if (!frame->compressed && !remove_zeros) {
frame->bytes_recvd += num;
if (frame->bytes_recvd <= MAX_RAW_DATA_SIZE(ov511->maxwidth, ov511->maxheight))
memmove(frame->rawdata + frame->bytes_recvd - num,
&cdata[offset], num);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd
- MAX_RAW_DATA_SIZE(ov511->maxwidth,
ov511->maxheight));
} else { /* Remove all-zero FIFO lines (aligned 32-byte blocks) */
int b, in = 0, allzero, copied=0;
if (offset) {
frame->bytes_recvd += 32 - offset; // Bytes out
memmove(frame->rawdata,
&cdata[offset], 32 - offset);
in += 32;
}
while (in < n - 1) {
allzero = 1;
for (b = 0; b < 32; b++) {
if (cdata[in + b]) {
allzero = 0;
break;
}
}
if (allzero) {
/* Don't copy it */
} else {
if (frame->bytes_recvd + copied + 32
<= MAX_RAW_DATA_SIZE(ov511->maxwidth, ov511->maxheight)) {
memmove(frame->rawdata + frame->bytes_recvd + copied,
&cdata[in], 32);
copied += 32;
} else {
PDEBUG(3, "Raw data buffer overrun!!");
}
}
in += 32;
}
frame->bytes_recvd += copied;
}
}
PDEBUG(5, "pn: %d %d %d %d %d %d %d %d %d %d",
aPackNum[0], aPackNum[1], aPackNum[2], aPackNum[3], aPackNum[4],
aPackNum[5],aPackNum[6], aPackNum[7], aPackNum[8], aPackNum[9]);
return totlen;
}
static int
ov518_move_data(struct usb_ov511 *ov511, urb_t *urb)
{
unsigned char *cdata;
int i, data_size, totlen = 0;
struct ov511_frame *frame;
struct timeval *ts;
PDEBUG(5, "Moving %d packets", urb->number_of_packets);
/* OV518(+) has no packet numbering */
data_size = ov511->packet_size;
for (i = 0; i < urb->number_of_packets; i++) {
int n = urb->iso_frame_desc[i].actual_length;
int st = urb->iso_frame_desc[i].status;
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 (ov511->curframe == -1) {
PDEBUG(4, "No frame currently active");
continue;
}
if (st)
PDEBUG(2, "data error: [%d] len=%d, status=%d", i, n, st);
frame = &ov511->frame[ov511->curframe];
#if 0
{
int d;
/* Print all data */
for (d = 0; d <= data_size - 16; d += 16) {
info("%4x: %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x", d,
cdata[d], cdata[d+1], cdata[d+2], cdata[d+3],
cdata[d+4], cdata[d+5], cdata[d+6], cdata[d+7],
cdata[d+8], cdata[d+9], cdata[d+10], cdata[d+11],
cdata[d+12], cdata[d+13], cdata[d+14], cdata[d+15]);
}
}
#endif
if (printph) {
info("packet header: %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x",
cdata[0], cdata[1], cdata[2], cdata[3], cdata[4], cdata[5],
cdata[6], cdata[7], cdata[8], cdata[9], cdata[10], cdata[11]);
}
/* A false positive here is likely, until OVT gives me
* the definitive SOF/EOF format */
if ((!(cdata[0] | cdata[1] | cdata[2] | cdata[3] |
cdata[5])) && cdata[6]) {
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", ov511->curframe);
goto sof;
}
} else {
goto check_middle;
}
eof:
ts = (struct timeval *)(frame->data
+ MAX_FRAME_SIZE(ov511->maxwidth, ov511->maxheight));
do_gettimeofday(ts);
PDEBUG(4, "Frame end, curframe = %d, hw=%d, vw=%d, recvd=%d",
ov511->curframe,
(int)(cdata[9]), (int)(cdata[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, ov511->minwidth, ov511->maxwidth);
RESTRICT_TO_RANGE(frame->rawheight, ov511->minheight, ov511->maxheight);
/* Don't allow byte count to exceed buffer size */
RESTRICT_TO_RANGE(frame->bytes_recvd,
8,
MAX_RAW_DATA_SIZE(ov511->maxwidth, ov511->maxheight));
if (frame->scanstate == STATE_LINES) {
int iFrameNext;
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 */
iFrameNext = (ov511->curframe + 1) % OV511_NUMFRAMES;
if (ov511->frame[iFrameNext].grabstate == FRAME_READY
|| ov511->frame[iFrameNext].grabstate == FRAME_GRABBING) {
ov511->curframe = iFrameNext;
ov511->frame[iFrameNext].scanstate = STATE_SCANNING;
frame = &ov511->frame[iFrameNext];
} else {
if (frame->grabstate == FRAME_DONE) {
PDEBUG(4, "Frame done! congratulations");
} else {
PDEBUG(4, "Frame not ready? state = %d",
ov511->frame[iFrameNext].grabstate);
}
ov511->curframe = -1;
PDEBUG(4, "SOF dropped (no active frame)");
continue; /* Nowhere to store this frame */
}
}
/* Image corruption caused by misplaced frame->segment = 0
* fixed by carlosf@conectiva.com.br
*/
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 (cdata[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");
continue;
}
/* Dump all data exactly as received */
if (dumppix == 2) {
frame->bytes_recvd += n;
if (frame->bytes_recvd <= MAX_RAW_DATA_SIZE(ov511->maxwidth, ov511->maxheight))
memmove(frame->rawdata + frame->bytes_recvd - n,
&cdata[0], n);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd
- MAX_RAW_DATA_SIZE(ov511->maxwidth,
ov511->maxheight));
} 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 is a header.
*/
int b, in = 0, allzero, copied=0;
// Decompressor expects the header
#if 0
if (frame->bytes_recvd == 0)
in += 8; /* Skip header */
#endif
while (in < n) {
allzero = 1;
for (b = 0; b < 8; b++) {
if (cdata[in + b]) {
allzero = 0;
break;
}
}
if (allzero) {
/* Don't copy it */
} else {
if (frame->bytes_recvd + copied + 8
<= MAX_RAW_DATA_SIZE(ov511->maxwidth, ov511->maxheight)) {
memmove(frame->rawdata + frame->bytes_recvd + copied,
&cdata[in], 8);
copied += 8;
} else {
PDEBUG(3, "Raw data buffer overrun!!");
}
}
in += 8;
}
frame->bytes_recvd += copied;
}
}
return totlen;
}
static void
ov511_isoc_irq(struct urb *urb)
{
int len;
struct usb_ov511 *ov511;
if (!urb->context) {
PDEBUG(4, "no context");
return;
}
ov511 = (struct usb_ov511 *) urb->context;
if (!ov511->dev || !ov511->user) {
PDEBUG(4, "no device, or not open");
return;
}
if (!ov511->streaming) {
PDEBUG(4, "hmmm... not streaming, but got interrupt");
return;
}
/* Copy the data received into our frame buffer */
if (ov511->curframe >= 0) {
if (ov511->bridge == BRG_OV511 ||
ov511->bridge == BRG_OV511PLUS)
len = ov511_move_data(ov511, urb);
else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
len = ov518_move_data(ov511, urb);
else
err("Unknown bridge device (%d)", ov511->bridge);
} else if (waitqueue_active(&ov511->wq)) {
wake_up_interruptible(&ov511->wq);
}
urb->dev = ov511->dev;
return;
}
/****************************************************************************
*
* Stream initialization and termination
*
***************************************************************************/
static int
ov511_init_isoc(struct usb_ov511 *ov511)
{
urb_t *urb;
int fx, err, n, size;
PDEBUG(3, "*** Initializing capture ***");
ov511->curframe = -1;
if (ov511->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 (ov511->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 (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
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;
}
if (packetsize == -1) {
// FIXME: OV518 is hardcoded to 15 FPS (alternate 5) for now
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
ov511_set_packet_size(ov511, 640);
else
ov511_set_packet_size(ov511, size);
} else {
info("Forcing packet size to %d", packetsize);
ov511_set_packet_size(ov511, 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;
}
ov511->sbuf[n].urb = urb;
urb->dev = ov511->dev;
urb->context = ov511;
urb->pipe = usb_rcvisocpipe(ov511->dev, OV511_ENDPOINT_ADDRESS);
urb->transfer_flags = USB_ISO_ASAP;
urb->transfer_buffer = ov511->sbuf[n].data;
urb->complete = ov511_isoc_irq;
urb->number_of_packets = FRAMES_PER_DESC;
urb->transfer_buffer_length =
ov511->packet_size * FRAMES_PER_DESC;
for (fx = 0; fx < FRAMES_PER_DESC; fx++) {
urb->iso_frame_desc[fx].offset =
ov511->packet_size * fx;
urb->iso_frame_desc[fx].length = ov511->packet_size;
}
}
ov511->streaming = 1;
ov511->sbuf[OV511_NUMSBUF - 1].urb->next = ov511->sbuf[0].urb;
for (n = 0; n < OV511_NUMSBUF - 1; n++)
ov511->sbuf[n].urb->next = ov511->sbuf[n+1].urb;
for (n = 0; n < OV511_NUMSBUF; n++) {
ov511->sbuf[n].urb->dev = ov511->dev;
err = usb_submit_urb(ov511->sbuf[n].urb);
if (err)
err("init isoc: usb_submit_urb(%d) ret %d", n, err);
}
return 0;
}
static void
ov511_stop_isoc(struct usb_ov511 *ov511)
{
int n;
if (!ov511->streaming || !ov511->dev)
return;
PDEBUG(3, "*** Stopping capture ***");
ov511_set_packet_size(ov511, 0);
ov511->streaming = 0;
/* Unschedule all of the iso td's */
for (n = OV511_NUMSBUF - 1; n >= 0; n--) {
if (ov511->sbuf[n].urb) {
ov511->sbuf[n].urb->next = NULL;
usb_unlink_urb(ov511->sbuf[n].urb);
usb_free_urb(ov511->sbuf[n].urb);
ov511->sbuf[n].urb = NULL;
}
}
}
static int
ov511_new_frame(struct usb_ov511 *ov511, int framenum)
{
struct ov511_frame *frame;
int newnum;
PDEBUG(4, "ov511->curframe = %d, framenum = %d", ov511->curframe,
framenum);
if (!ov511->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 (ov511->curframe == -1) {
newnum = (framenum - 1 + OV511_NUMFRAMES) % OV511_NUMFRAMES;
if (ov511->frame[newnum].grabstate == FRAME_READY)
framenum = newnum;
} else
return 0;
frame = &ov511->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;
ov511->curframe = framenum;
/* Make sure it's not too big */
if (frame->width > ov511->maxwidth)
frame->width = ov511->maxwidth;
frame->width &= ~7L; /* Multiple of 8 */
if (frame->height > ov511->maxheight)
frame->height = ov511->maxheight;
frame->height &= ~3L; /* Multiple of 4 */
return 0;
}
/****************************************************************************
*
* Buffer management
*
***************************************************************************/
static int
ov511_alloc(struct usb_ov511 *ov511)
{
int i;
int w = ov511->maxwidth;
int h = ov511->maxheight;
PDEBUG(4, "entered");
down(&ov511->buf_lock);
if (ov511->buf_state == BUF_PEND_DEALLOC) {
ov511->buf_state = BUF_ALLOCATED;
del_timer(&ov511->buf_timer);
}
if (ov511->buf_state == BUF_ALLOCATED)
goto out;
ov511->fbuf = rvmalloc(OV511_NUMFRAMES * MAX_DATA_SIZE(w, h));
if (!ov511->fbuf)
goto error;
ov511->rawfbuf = vmalloc(OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h));
if (!ov511->rawfbuf) {
rvfree(ov511->fbuf, OV511_NUMFRAMES * MAX_DATA_SIZE(w, h));
ov511->fbuf = NULL;
goto error;
}
memset(ov511->rawfbuf, 0, OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h));
ov511->tempfbuf = vmalloc(OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h));
if (!ov511->tempfbuf) {
vfree(ov511->rawfbuf);
ov511->rawfbuf = NULL;
rvfree(ov511->fbuf, OV511_NUMFRAMES * MAX_DATA_SIZE(w, h));
ov511->fbuf = NULL;
goto error;
}
memset(ov511->tempfbuf, 0, OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h));
for (i = 0; i < OV511_NUMSBUF; i++) {
ov511->sbuf[i].data = kmalloc(FRAMES_PER_DESC *
MAX_FRAME_SIZE_PER_DESC, GFP_KERNEL);
if (!ov511->sbuf[i].data) {
while (--i) {
kfree(ov511->sbuf[i].data);
ov511->sbuf[i].data = NULL;
}
vfree(ov511->tempfbuf);
ov511->tempfbuf = NULL;
vfree(ov511->rawfbuf);
ov511->rawfbuf = NULL;
rvfree(ov511->fbuf,
OV511_NUMFRAMES * MAX_DATA_SIZE(w, h));
ov511->fbuf = NULL;
goto error;
}
PDEBUG(4, "sbuf[%d] @ %p", i, ov511->sbuf[i].data);
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].data = ov511->fbuf + i * MAX_DATA_SIZE(w, h);
ov511->frame[i].rawdata = ov511->rawfbuf
+ i * MAX_RAW_DATA_SIZE(w, h);
ov511->frame[i].tempdata = ov511->tempfbuf
+ i * MAX_RAW_DATA_SIZE(w, h);
PDEBUG(4, "frame[%d] @ %p", i, ov511->frame[i].data);
}
ov511->buf_state = BUF_ALLOCATED;
out:
up(&ov511->buf_lock);
PDEBUG(4, "leaving");
return 0;
error:
ov511->buf_state = BUF_NOT_ALLOCATED;
up(&ov511->buf_lock);
PDEBUG(4, "errored");
return -ENOMEM;
}
/*
* - 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
ov511_do_dealloc(struct usb_ov511 *ov511)
{
int i;
PDEBUG(4, "entered");
if (ov511->fbuf) {
rvfree(ov511->fbuf, OV511_NUMFRAMES
* MAX_DATA_SIZE(ov511->maxwidth, ov511->maxheight));
ov511->fbuf = NULL;
}
if (ov511->rawfbuf) {
vfree(ov511->rawfbuf);
ov511->rawfbuf = NULL;
}
if (ov511->tempfbuf) {
vfree(ov511->tempfbuf);
ov511->tempfbuf = NULL;
}
for (i = 0; i < OV511_NUMSBUF; i++) {
if (ov511->sbuf[i].data) {
kfree(ov511->sbuf[i].data);
ov511->sbuf[i].data = NULL;
}
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].data = NULL;
ov511->frame[i].rawdata = NULL;
ov511->frame[i].tempdata = NULL;
}
PDEBUG(4, "buffer memory deallocated");
ov511->buf_state = BUF_NOT_ALLOCATED;
PDEBUG(4, "leaving");
}
static void
ov511_buf_callback(unsigned long data)
{
struct usb_ov511 *ov511 = (struct usb_ov511 *)data;
PDEBUG(4, "entered");
down(&ov511->buf_lock);
if (ov511->buf_state == BUF_PEND_DEALLOC)
ov511_do_dealloc(ov511);
up(&ov511->buf_lock);
PDEBUG(4, "leaving");
}
static void
ov511_dealloc(struct usb_ov511 *ov511, int now)
{
struct timer_list *bt = &(ov511->buf_timer);
PDEBUG(4, "entered");
down(&ov511->buf_lock);
PDEBUG(4, "deallocating buffer memory %s", now ? "now" : "later");
if (ov511->buf_state == BUF_PEND_DEALLOC) {
ov511->buf_state = BUF_ALLOCATED;
del_timer(bt);
}
if (now)
ov511_do_dealloc(ov511);
else {
ov511->buf_state = BUF_PEND_DEALLOC;
init_timer(bt);
bt->function = ov511_buf_callback;
bt->data = (unsigned long)ov511;
bt->expires = jiffies + buf_timeout * HZ;
add_timer(bt);
}
up(&ov511->buf_lock);
PDEBUG(4, "leaving");
}
/****************************************************************************
*
* V4L API
*
***************************************************************************/
static int
ov511_open(struct video_device *vdev, int flags)
{
struct usb_ov511 *ov511 = vdev->priv;
int err, i;
PDEBUG(4, "opening");
down(&ov511->lock);
err = -EBUSY;
if (ov511->user)
goto out;
err = -ENOMEM;
if (ov511_alloc(ov511))
goto out;
ov511->sub_flag = 0;
/* In case app doesn't set them... */
if (ov51x_set_default_params(ov511) < 0)
goto out;
/* Make sure frames are reset */
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].grabstate = FRAME_UNUSED;
ov511->frame[i].bytes_read = 0;
}
/* If compression is on, make sure now that a
* decompressor can be loaded */
if (ov511->compress && !ov511->decomp_ops) {
err = ov51x_request_decompressor(ov511);
if (err)
goto out;
}
err = ov511_init_isoc(ov511);
if (err) {
ov511_dealloc(ov511, 0);
goto out;
}
ov511->user++;
if (ov511->led_policy == LED_AUTO)
ov51x_led_control(ov511, 1);
out:
up(&ov511->lock);
return err;
}
static void
ov511_close(struct video_device *dev)
{
struct usb_ov511 *ov511 = (struct usb_ov511 *)dev;
PDEBUG(4, "ov511_close");
down(&ov511->lock);
ov511->user--;
ov511_stop_isoc(ov511);
ov51x_release_decompressor(ov511);
if (ov511->led_policy == LED_AUTO)
ov51x_led_control(ov511, 0);
if (ov511->dev)
ov511_dealloc(ov511, 0);
up(&ov511->lock);
/* Device unplugged while open. Only a minimum of unregistration is done
* here; the disconnect callback already did the rest. */
if (!ov511->dev) {
ov511_dealloc(ov511, 1);
video_unregister_device(&ov511->vdev);
kfree(ov511);
ov511 = NULL;
}
}
static int
ov511_init_done(struct video_device *vdev)
{
#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
create_proc_ov511_cam((struct usb_ov511 *)vdev);
#endif
return 0;
}
static long
ov511_write(struct video_device *vdev, const char *buf,
unsigned long count, int noblock)
{
return -EINVAL;
}
/* Do not call this function directly! */
static int
ov511_ioctl_internal(struct video_device *vdev, unsigned int cmd, void *arg)
{
struct usb_ov511 *ov511 = (struct usb_ov511 *)vdev;
PDEBUG(5, "IOCtl: 0x%X", cmd);
if (!ov511->dev)
return -EIO;
switch (cmd) {
case VIDIOCGCAP:
{
struct video_capability b;
PDEBUG(4, "VIDIOCGCAP");
memset(&b, 0, sizeof(b));
sprintf(b.name, "%s USB Camera",
ov511->bridge == BRG_OV511 ? "OV511" :
ov511->bridge == BRG_OV511PLUS ? "OV511+" :
ov511->bridge == BRG_OV518 ? "OV518" :
ov511->bridge == BRG_OV518PLUS ? "OV518+" :
"unknown");
b.type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE;
if (ov511->has_tuner)
b.type |= VID_TYPE_TUNER;
b.channels = ov511->num_inputs;
b.audios = ov511->has_audio_proc ? 1:0;
b.maxwidth = ov511->maxwidth;
b.maxheight = ov511->maxheight;
b.minwidth = ov511->minwidth;
b.minheight = ov511->minheight;
if (copy_to_user(arg, &b, sizeof(b)))
return -EFAULT;
return 0;
}
case VIDIOCGCHAN:
{
struct video_channel v;
PDEBUG(4, "VIDIOCGCHAN");
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if ((unsigned)(v.channel) >= ov511->num_inputs) {
err("Invalid channel (%d)", v.channel);
return -EINVAL;
}
v.norm = ov511->norm;
v.type = (ov511->has_tuner) ? VIDEO_TYPE_TV : VIDEO_TYPE_CAMERA;
v.flags = (ov511->has_tuner) ? VIDEO_VC_TUNER : 0;
v.flags |= (ov511->has_audio_proc) ? VIDEO_VC_AUDIO : 0;
// v.flags |= (ov511->has_decoder) ? VIDEO_VC_NORM : 0;
v.tuners = (ov511->has_tuner) ? 1:0;
decoder_get_input_name(ov511, v.channel, v.name);
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSCHAN:
{
struct video_channel v;
int err;
PDEBUG(4, "VIDIOCSCHAN");
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
/* Make sure it's not a camera */
if (!ov511->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) >= ov511->num_inputs) {
err("Invalid channel (%d)", v.channel);
return -EINVAL;
}
err = decoder_set_input(ov511, v.channel);
if (err)
return err;
err = decoder_set_norm(ov511, v.norm);
if (err)
return err;
return 0;
}
case VIDIOCGPICT:
{
struct video_picture p;
PDEBUG(4, "VIDIOCGPICT");
memset(&p, 0, sizeof(p));
if (sensor_get_picture(ov511, &p))
return -EIO;
if (copy_to_user(arg, &p, sizeof(p)))
return -EFAULT;
return 0;
}
case VIDIOCSPICT:
{
struct video_picture p;
int i;
PDEBUG(4, "VIDIOCSPICT");
if (copy_from_user(&p, arg, sizeof(p)))
return -EFAULT;
if (!ov511_get_depth(p.palette))
return -EINVAL;
if (sensor_set_picture(ov511, &p))
return -EIO;
if (force_palette && p.palette != force_palette) {
info("Palette rejected (%d)", p.palette);
return -EINVAL;
}
// FIXME: Format should be independent of frames
if (p.palette != ov511->frame[0].format) {
PDEBUG(4, "Detected format change");
/* If we're collecting previous frame wait
before changing modes */
interruptible_sleep_on(&ov511->wq);
if (signal_pending(current)) return -EINTR;
mode_init_regs(ov511, ov511->frame[0].width,
ov511->frame[0].height, p.palette,
ov511->sub_flag);
}
PDEBUG(4, "Setting depth=%d, palette=%d", p.depth, p.palette);
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].depth = p.depth;
ov511->frame[i].format = p.palette;
}
return 0;
}
case VIDIOCGCAPTURE:
{
int vf;
PDEBUG(4, "VIDIOCGCAPTURE");
if (copy_from_user(&vf, arg, sizeof(vf)))
return -EFAULT;
ov511->sub_flag = vf;
return 0;
}
case VIDIOCSCAPTURE:
{
struct video_capture vc;
PDEBUG(4, "VIDIOCSCAPTURE");
if (copy_from_user(&vc, arg, sizeof(vc)))
return -EFAULT;
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;
ov511->subx = vc.x;
ov511->suby = vc.y;
ov511->subw = vc.width;
ov511->subh = vc.height;
return 0;
}
case VIDIOCSWIN:
{
struct video_window vw;
int i, result;
if (copy_from_user(&vw, arg, sizeof(vw)))
return -EFAULT;
PDEBUG(4, "VIDIOCSWIN: width=%d, height=%d",
vw.width, vw.height);
#if 0
if (vw.flags)
return -EINVAL;
if (vw.clipcount)
return -EINVAL;
if (vw.height != ov511->maxheight)
return -EINVAL;
if (vw.width != ov511->maxwidth)
return -EINVAL;
#endif
/* If we're collecting previous frame wait
before changing modes */
interruptible_sleep_on(&ov511->wq);
if (signal_pending(current)) return -EINTR;
result = mode_init_regs(ov511, vw.width, vw.height,
ov511->frame[0].format, ov511->sub_flag);
if (result < 0)
return result;
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].width = vw.width;
ov511->frame[i].height = vw.height;
}
return 0;
}
case VIDIOCGWIN:
{
struct video_window vw;
memset(&vw, 0, sizeof(vw));
vw.x = 0; /* FIXME */
vw.y = 0;
vw.width = ov511->frame[0].width;
vw.height = ov511->frame[0].height;
vw.flags = 30;
PDEBUG(4, "VIDIOCGWIN: %dx%d", vw.width, vw.height);
if (copy_to_user(arg, &vw, sizeof(vw)))
return -EFAULT;
return 0;
}
case VIDIOCGMBUF:
{
struct video_mbuf vm;
int i;
PDEBUG(4, "VIDIOCGMBUF");
memset(&vm, 0, sizeof(vm));
vm.size = OV511_NUMFRAMES
* MAX_DATA_SIZE(ov511->maxwidth, ov511->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(ov511->maxwidth, ov511->maxheight);
}
if (copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
return -EFAULT;
return 0;
}
case VIDIOCMCAPTURE:
{
struct video_mmap vm;
int ret, depth;
if (copy_from_user((void *)&vm, (void *)arg, sizeof(vm)))
return -EFAULT;
PDEBUG(4, "CMCAPTURE");
PDEBUG(4, "frame: %d, size: %dx%d, format: %d",
vm.frame, vm.width, vm.height, vm.format);
depth = ov511_get_depth(vm.format);
if (!depth) {
err("VIDIOCMCAPTURE: invalid format (%d)", vm.format);
return -EINVAL;
}
if ((unsigned)vm.frame >= OV511_NUMFRAMES) {
err("VIDIOCMCAPTURE: invalid frame (%d)", vm.frame);
return -EINVAL;
}
if (vm.width > ov511->maxwidth
|| vm.height > ov511->maxheight) {
err("VIDIOCMCAPTURE: requested dimensions too big");
return -EINVAL;
}
if (ov511->frame[vm.frame].grabstate == FRAME_GRABBING) {
PDEBUG(4, "VIDIOCMCAPTURE: already grabbing");
return -EBUSY;
}
if (force_palette && vm.format != force_palette) {
info("palette rejected (%d)", vm.format);
return -EINVAL;
}
if ((ov511->frame[vm.frame].width != vm.width) ||
(ov511->frame[vm.frame].height != vm.height) ||
(ov511->frame[vm.frame].format != vm.format) ||
(ov511->frame[vm.frame].sub_flag != ov511->sub_flag) ||
(ov511->frame[vm.frame].depth != depth)) {
PDEBUG(4, "VIDIOCMCAPTURE: change in image parameters");
/* If we're collecting previous frame wait
before changing modes */
interruptible_sleep_on(&ov511->wq);
if (signal_pending(current)) return -EINTR;
ret = mode_init_regs(ov511, vm.width, vm.height,
vm.format, ov511->sub_flag);
#if 0
if (ret < 0) {
PDEBUG(1, "Got error while initializing regs ");
return ret;
}
#endif
ov511->frame[vm.frame].width = vm.width;
ov511->frame[vm.frame].height = vm.height;
ov511->frame[vm.frame].format = vm.format;
ov511->frame[vm.frame].sub_flag = ov511->sub_flag;
ov511->frame[vm.frame].depth = depth;
}
/* Mark it as ready */
ov511->frame[vm.frame].grabstate = FRAME_READY;
PDEBUG(4, "VIDIOCMCAPTURE: renewing frame %d", vm.frame);
return ov511_new_frame(ov511, vm.frame);
}
case VIDIOCSYNC:
{
int fnum, rc;
struct ov511_frame *frame;
if (copy_from_user((void *)&fnum, arg, sizeof(int)))
return -EFAULT;
if ((unsigned)fnum >= OV511_NUMFRAMES) {
err("VIDIOCSYNC: invalid frame (%d)", fnum);
return -EINVAL;
}
frame = &ov511->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 (!ov511->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 = ov511_new_frame(ov511, fnum)) < 0)
return ret;
goto redo;
}
/* Fall through */
case FRAME_DONE:
if (ov511->snap_enabled && !frame->snapshot) {
int ret;
if ((ret = ov511_new_frame(ov511, fnum)) < 0)
return ret;
goto redo;
}
frame->grabstate = FRAME_UNUSED;
/* Reset the hardware snapshot button */
/* FIXME - Is this the best place for this? */
if ((ov511->snap_enabled) && (frame->snapshot)) {
frame->snapshot = 0;
ov51x_clear_snapshot(ov511);
}
/* Decompression, format conversion, etc... */
ov511_postprocess(ov511, frame);
break;
} /* end switch */
return 0;
}
case VIDIOCGFBUF:
{
struct video_buffer vb;
PDEBUG(4, "VIDIOCSCHAN");
memset(&vb, 0, sizeof(vb));
vb.base = NULL; /* frame buffer not supported, not used */
if (copy_to_user((void *)arg, (void *)&vb, sizeof(vb)))
return -EFAULT;
return 0;
}
case VIDIOCGUNIT:
{
struct video_unit vu;
PDEBUG(4, "VIDIOCGUNIT");
memset(&vu, 0, sizeof(vu));
vu.video = ov511->vdev.minor; /* Video minor */
vu.vbi = VIDEO_NO_UNIT; /* VBI minor */
vu.radio = VIDEO_NO_UNIT; /* Radio minor */
vu.audio = VIDEO_NO_UNIT; /* Audio minor */
vu.teletext = VIDEO_NO_UNIT; /* Teletext minor */
if (copy_to_user((void *)arg, (void *)&vu, sizeof(vu)))
return -EFAULT;
return 0;
}
case VIDIOCGTUNER:
{
struct video_tuner v;
PDEBUG(4, "VIDIOCGTUNER");
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (!ov511->has_tuner || v.tuner) // Only tuner 0
return -EINVAL;
strcpy(v.name, "Television");
// FIXME: Need a way to get the real values
v.rangelow = 0;
v.rangehigh = ~0;
v.flags = VIDEO_TUNER_PAL | VIDEO_TUNER_NTSC |
VIDEO_TUNER_SECAM;
v.mode = 0; /* FIXME: Not sure what this is yet */
v.signal = 0xFFFF; /* unknown */
call_i2c_clients(ov511, cmd, &v);
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSTUNER:
{
struct video_tuner v;
int err;
PDEBUG(4, "VIDIOCSTUNER");
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
/* Only no or one tuner for now */
if (!ov511->has_tuner || v.tuner)
return -EINVAL;
/* and it only has certain valid modes */
if (v.mode != VIDEO_MODE_PAL &&
v.mode != VIDEO_MODE_NTSC &&
v.mode != VIDEO_MODE_SECAM) return -EOPNOTSUPP;
/* Is this right/necessary? */
err = decoder_set_norm(ov511, v.mode);
if (err)
return err;
call_i2c_clients(ov511, cmd, &v);
return 0;
}
case VIDIOCGFREQ:
{
unsigned long v = ov511->freq;
PDEBUG(4, "VIDIOCGFREQ");
if (!ov511->has_tuner)
return -EINVAL;
#if 0
/* FIXME: this is necessary for testing */
v = 46*16;
#endif
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSFREQ:
{
unsigned long v;
if (!ov511->has_tuner)
return -EINVAL;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
PDEBUG(4, "VIDIOCSFREQ: %lx", v);
ov511->freq = v;
call_i2c_clients(ov511, cmd, &v);
return 0;
}
case VIDIOCGAUDIO:
case VIDIOCSAUDIO:
{
/* FIXME: Implement this... */
return 0;
}
default:
PDEBUG(3, "Unsupported IOCtl: 0x%X", cmd);
return -ENOIOCTLCMD;
} /* end switch */
return 0;
}
static int
ov511_ioctl(struct video_device *vdev, unsigned int cmd, void *arg)
{
int rc;
struct usb_ov511 *ov511 = vdev->priv;
if (down_interruptible(&ov511->lock))
return -EINTR;
rc = ov511_ioctl_internal(vdev, cmd, arg);
up(&ov511->lock);
return rc;
}
static inline long
ov511_read(struct video_device *vdev, char *buf, unsigned long count,
int noblock)
{
struct usb_ov511 *ov511 = vdev->priv;
int i, rc = 0, frmx = -1;
struct ov511_frame *frame;
if (down_interruptible(&ov511->lock))
return -EINTR;
PDEBUG(4, "%ld bytes, noblock=%d", count, noblock);
if (!vdev || !buf) {
rc = -EFAULT;
goto error;
}
if (!ov511->dev) {
rc = -EIO;
goto error;
}
// FIXME: Only supports two frames
/* See if a frame is completed, then use it. */
if (ov511->frame[0].grabstate >= FRAME_DONE) /* _DONE or _ERROR */
frmx = 0;
else if (ov511->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 (ov511->frame[0].grabstate == FRAME_GRABBING)
frmx = 0;
else if (ov511->frame[1].grabstate == FRAME_GRABBING)
frmx = 1;
}
/* If no frame is active, start one. */
if (frmx == -1) {
if ((rc = ov511_new_frame(ov511, frmx = 0))) {
err("read: ov511_new_frame error");
goto error;
}
}
frame = &ov511->frame[frmx];
restart:
if (!ov511->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", ov511->curframe);
if (ov511_new_frame(ov511, frmx)) {
err("read: ov511_new_frame error");
goto error;
}
goto restart;
}
/* Repeat until we get a snapshot frame */
if (ov511->snap_enabled)
PDEBUG(4, "Waiting snapshot frame");
if (ov511->snap_enabled && !frame->snapshot) {
frame->bytes_read = 0;
if ((rc = ov511_new_frame(ov511, frmx))) {
err("read: ov511_new_frame error");
goto error;
}
goto restart;
}
/* Clear the snapshot */
if (ov511->snap_enabled && frame->snapshot) {
frame->snapshot = 0;
ov51x_clear_snapshot(ov511);
}
/* Decompression, format conversion, etc... */
ov511_postprocess(ov511, 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 has 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. */
ov511->frame[frmx].grabstate = FRAME_UNUSED;
if ((rc = ov511_new_frame(ov511, !frmx))) {
err("ov511_new_frame returned error");
goto error;
}
}
PDEBUG(4, "read finished, returning %ld (sweet)", count);
up(&ov511->lock);
return count;
error:
up(&ov511->lock);
return rc;
}
static int
ov511_mmap(struct video_device *vdev, const char *adr, unsigned long size)
{
struct usb_ov511 *ov511 = vdev->priv;
unsigned long start = (unsigned long)adr;
unsigned long page, pos;
if (ov511->dev == NULL)
return -EIO;
PDEBUG(4, "mmap: %ld (%lX) bytes", size, size);
if (size > (((OV511_NUMFRAMES
* MAX_DATA_SIZE(ov511->maxwidth, ov511->maxheight)
+ PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))))
return -EINVAL;
if (down_interruptible(&ov511->lock))
return -EINTR;
pos = (unsigned long)ov511->fbuf;
while (size > 0) {
page = kvirt_to_pa(pos);
if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) {
up(&ov511->lock);
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
up(&ov511->lock);
return 0;
}
static struct video_device ov511_template = {
owner: THIS_MODULE,
name: "OV511 USB Camera",
type: VID_TYPE_CAPTURE,
hardware: VID_HARDWARE_OV511,
open: ov511_open,
close: ov511_close,
read: ov511_read,
write: ov511_write,
ioctl: ov511_ioctl,
mmap: ov511_mmap,
initialize: ov511_init_done,
};
#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
static int
ov511_control_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long ularg)
{
struct proc_dir_entry *pde;
struct usb_ov511 *ov511;
void *arg = (void *) ularg;
int rc;
pde = (struct proc_dir_entry *) inode->u.generic_ip;
if (!pde)
return -ENOENT;
ov511 = (struct usb_ov511 *) pde->data;
if (!ov511)
return -ENODEV;
if (!ov511->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(ov511, &(opt.val));
if (rc) return rc;
break;
case OV511_USOPT_SAT:
rc = sensor_get_saturation(ov511, &(opt.val));
if (rc) return rc;
break;
case OV511_USOPT_HUE:
rc = sensor_get_hue(ov511, &(opt.val));
if (rc) return rc;
break;
case OV511_USOPT_CONTRAST:
rc = sensor_get_contrast(ov511, &(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(ov511, opt.val);
if (rc) return rc;
break;
case OV511_USOPT_SAT:
rc = sensor_set_saturation(ov511, opt.val);
if (rc) return rc;
break;
case OV511_USOPT_HUE:
rc = sensor_set_hue(ov511, opt.val);
if (rc) return rc;
break;
case OV511_USOPT_CONTRAST:
rc = sensor_set_contrast(ov511, 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 = ov511->lightfreq;
break;
case OV511_UIOPT_BFILTER:
opt.val = ov511->bandfilt;
break;
case OV511_UIOPT_LED:
opt.val = ov511->led_policy;
break;
case OV511_UIOPT_DEBUG:
opt.val = debug;
break;
case OV511_UIOPT_COMPRESS:
opt.val = ov511->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(ov511, opt.val);
if (rc) return rc;
break;
case OV511_UIOPT_BFILTER:
rc = sensor_set_banding_filter(ov511, opt.val);
if (rc) return rc;
break;
case OV511_UIOPT_LED:
if (opt.val <= 2) {
ov511->led_policy = opt.val;
if (ov511->led_policy == LED_OFF)
ov51x_led_control(ov511, 0);
else if (ov511->led_policy == LED_ON)
ov51x_led_control(ov511, 1);
} else {
return -EINVAL;
}
break;
case OV511_UIOPT_DEBUG:
if (opt.val <= 5)
debug = opt.val;
else
return -EINVAL;
break;
case OV511_UIOPT_COMPRESS:
ov511->compress = opt.val;
if (ov511->compress) {
if (ov511->bridge == BRG_OV511 ||
ov511->bridge == BRG_OV511PLUS)
ov511_init_compression(ov511);
else if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS)
ov518_init_compression(ov511);
}
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 ov51x_i2c_write_slave(ov511, 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 = ov51x_i2c_read_slave(ov511, 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 OV7620AE sensor. The OV7620AE uses
* the same register settings as the OV7610, since they are very similar.
*/
static int
ov7xx0_configure(struct usb_ov511 *ov511)
{
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 */
ov511->primary_i2c_slave = OV7xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV7xx0_I2C_WRITE_ID,
OV7xx0_I2C_READ_ID) < 0)
return -1;
if (ov51x_init_ov_sensor(ov511) >= 0) {
PDEBUG(1, "OV7xx0 sensor initalized (method 1)");
} else {
/* Reset the 76xx */
if (ov51x_i2c_write(ov511, 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 ((ov51x_i2c_read(ov511,
OV7610_REG_ID_HIGH) == 0x7F) &&
(ov51x_i2c_read(ov511,
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 = ov51x_i2c_read(ov511, OV7610_REG_COM_I);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if ((rc & 3) == 3) {
info("Sensor is an OV7610");
ov511->sensor = SEN_OV7610;
} else if ((rc & 3) == 1) {
/* I don't know what's different about the 76BE yet */
if (ov51x_i2c_read(ov511, 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 (ov511->bridge == BRG_OV511PLUS) {
info("Enabling 511+/7620AE workaround");
ov511->sensor = SEN_OV7620;
} else {
ov511->sensor = SEN_OV7620AE;
}
} else if ((rc & 3) == 0) {
info("Sensor is an OV7620");
ov511->sensor = SEN_OV7620;
} else {
err("Unknown image sensor version: %d", rc & 3);
return -1;
}
if (ov511->sensor == SEN_OV7620) {
PDEBUG(4, "Writing 7620 registers");
if (ov511_write_regvals(ov511, aRegvalsNorm7620))
return -1;
} else {
PDEBUG(4, "Writing 7610 registers");
if (ov511_write_regvals(ov511, aRegvalsNorm7610))
return -1;
}
/* Set sensor-specific vars */
ov511->maxwidth = 640;
ov511->maxheight = 480;
ov511->minwidth = 64;
ov511->minheight = 48;
// FIXME: These do not match the actual settings yet
ov511->brightness = 0x80 << 8;
ov511->contrast = 0x80 << 8;
ov511->colour = 0x80 << 8;
ov511->hue = 0x80 << 8;
return 0;
}
/* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */
static int
ov6xx0_configure(struct usb_ov511 *ov511)
{
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, 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, 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 },
};
/* This chip is undocumented so many of these are guesses. OK=verified,
* A=Added since 6620, U=unknown function (not a 6620 reg) */
static struct ov511_regvals aRegvalsNorm6x30[] = {
/*OK*/ { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */
/*00?*/ { OV511_I2C_BUS, 0x11, 0x01 },
/*OK*/ { OV511_I2C_BUS, 0x03, 0x60 },
/*0A?*/ { 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 */
/*OK*/ { OV511_I2C_BUS, 0x0c, 0x24 },
/*OK*/ { OV511_I2C_BUS, 0x0d, 0x24 },
/*A*/ { OV511_I2C_BUS, 0x0e, 0x20 },
// /*24?*/ { OV511_I2C_BUS, 0x12, 0x28 }, /* Enable AGC */
// { OV511_I2C_BUS, 0x12, 0x24 }, /* Enable AGC */
// /*A*/ { OV511_I2C_BUS, 0x13, 0x21 },
// /*A*/ { OV511_I2C_BUS, 0x13, 0x25 }, /* Tristate Y and UV busses */
// /*04?*/ { OV511_I2C_BUS, 0x14, 0x80 },
/* 0x16: 0x06 helps frame stability with moving objects */
/*03?*/ { OV511_I2C_BUS, 0x16, 0x06 },
// /*OK*/ { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */
// 21 & 22? The suggested values look wrong. Go with default
/*A*/ { OV511_I2C_BUS, 0x23, 0xc0 },
/*A*/ { OV511_I2C_BUS, 0x25, 0x9a }, // Check this against default
// /*OK*/ { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */
/* 0x28: 0x05 Selects RGB format if RGB on */
// /*04?*/ { OV511_I2C_BUS, 0x28, 0x05 },
// /*04?*/ { OV511_I2C_BUS, 0x28, 0x45 }, // DEBUG: Tristate UV bus
/*OK*/ { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */
// /*OK*/ { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */
// /*U*/ { OV511_I2C_BUS, 0x2c, 0xa0 },
{ OV511_I2C_BUS, 0x2d, 0x99 },
// /*A*/ { OV511_I2C_BUS, 0x33, 0x26 }, // Reserved bits on 6620
// /*d2?*/ { OV511_I2C_BUS, 0x34, 0x03 }, /* Max A/D range */
// /*U*/ { OV511_I2C_BUS, 0x36, 0x8f }, // May not be necessary
// /*U*/ { OV511_I2C_BUS, 0x37, 0x80 }, // May not be necessary
// /*8b?*/ { OV511_I2C_BUS, 0x38, 0x83 },
// /*40?*/ { 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 */
/*OK*/ { OV511_I2C_BUS, 0x3d, 0x80 },
// /*A*/ { OV511_I2C_BUS, 0x3f, 0x0e },
// /*U*/ { OV511_I2C_BUS, 0x40, 0x00 },
// /*U*/ { OV511_I2C_BUS, 0x41, 0x00 },
// /*U*/ { OV511_I2C_BUS, 0x42, 0x80 },
// /*U*/ { OV511_I2C_BUS, 0x43, 0x3f },
// /*U*/ { OV511_I2C_BUS, 0x44, 0x80 },
// /*U*/ { OV511_I2C_BUS, 0x45, 0x20 },
// /*U*/ { OV511_I2C_BUS, 0x46, 0x20 },
// /*U*/ { OV511_I2C_BUS, 0x47, 0x80 },
// /*U*/ { OV511_I2C_BUS, 0x48, 0x7f },
// /*U*/ { OV511_I2C_BUS, 0x49, 0x00 },
/* These next two registers (0x4a, 0x4b) are undocumented. They
* control the color balance */
// /*OK?*/ { OV511_I2C_BUS, 0x4a, 0x80 }, // Check these
// /*OK?*/ { OV511_I2C_BUS, 0x4b, 0x80 },
// /*U*/ { OV511_I2C_BUS, 0x4c, 0xd0 },
/*d2?*/ { OV511_I2C_BUS, 0x4d, 0x10 }, /* This reduces noise a bit */
/*c1?*/ { OV511_I2C_BUS, 0x4e, 0x40 },
/*04?*/ { OV511_I2C_BUS, 0x4f, 0x07 },
// /*U*/ { OV511_I2C_BUS, 0x50, 0xff },
/*U*/ { OV511_I2C_BUS, 0x54, 0x23 },
// /*U*/ { OV511_I2C_BUS, 0x55, 0xff },
// /*U*/ { OV511_I2C_BUS, 0x56, 0x12 },
/*U*/ { OV511_I2C_BUS, 0x57, 0x81 },
// /*U*/ { OV511_I2C_BUS, 0x58, 0x75 },
/*U*/ { OV511_I2C_BUS, 0x59, 0x01 },
/*U*/ { OV511_I2C_BUS, 0x5a, 0x2c },
/*U*/ { OV511_I2C_BUS, 0x5b, 0x0f },
// /*U*/ { OV511_I2C_BUS, 0x5c, 0x10 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
PDEBUG(4, "starting sensor configuration");
if (ov51x_init_ov_sensor(ov511) < 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 = ov51x_i2c_read(ov511, OV7610_REG_COM_I);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if ((rc & 3) == 0) {
info("Sensor is an OV6630");
ov511->sensor = SEN_OV6630;
} else if ((rc & 3) == 1) {
info("Sensor is an OV6620");
ov511->sensor = SEN_OV6620;
} else if ((rc & 3) == 2) {
info("Sensor is an OV6630AE");
ov511->sensor = SEN_OV6630;
} else if ((rc & 3) == 3) {
info("Sensor is an OV6630AF");
ov511->sensor = SEN_OV6630;
}
/* Set sensor-specific vars */
if (ov511->sensor == SEN_OV6620) {
ov511->maxwidth = 352;
ov511->maxheight = 288;
} else {
/* 352x288 not working with OV518 yet */
ov511->maxwidth = 320;
ov511->maxheight = 240;
}
ov511->minwidth = 64;
ov511->minheight = 48;
// FIXME: These do not match the actual settings yet
ov511->brightness = 0x80 << 8;
ov511->contrast = 0x80 << 8;
ov511->colour = 0x80 << 8;
ov511->hue = 0x80 << 8;
if (ov511->sensor == SEN_OV6620) {
PDEBUG(4, "Writing 6x20 registers");
if (ov511_write_regvals(ov511, aRegvalsNorm6x20))
return -1;
} else {
PDEBUG(4, "Writing 6x30 registers");
if (ov511_write_regvals(ov511, aRegvalsNorm6x30))
return -1;
}
return 0;
}
/* This initializes the KS0127 and KS0127B video decoders. */
static int
ks0127_configure(struct usb_ov511 *ov511)
{
int rc;
// FIXME: I don't know how to sync or reset it yet
#if 0
if (ov51x_init_ks_sensor(ov511) < 0) {
err("Failed to initialize the KS0127");
return -1;
} else {
PDEBUG(1, "KS012x(B) sensor detected");
}
#endif
/* Detect decoder subtype */
rc = ov51x_i2c_read(ov511, 0x00);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if (rc & 0x08) {
rc = ov51x_i2c_read(ov511, 0x3d);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if ((rc & 0x0f) == 0) {
info("Sensor is a KS0127");
ov511->sensor = SEN_KS0127;
} else if ((rc & 0x0f) == 9) {
info("Sensor is a KS0127B Rev. A");
ov511->sensor = SEN_KS0127B;
}
} else {
err("Error: Sensor is an unsupported KS0122");
return -1;
}
/* Set sensor-specific vars */
ov511->maxwidth = 640;
ov511->maxheight = 480;
ov511->minwidth = 64;
ov511->minheight = 48;
// FIXME: These do not match the actual settings yet
ov511->brightness = 0x80 << 8;
ov511->contrast = 0x80 << 8;
ov511->colour = 0x80 << 8;
ov511->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 *ov511)
{
struct usb_device *dev = ov511->dev;
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(ov511) < 0) {
err("Failed to initialize the SAA7111A");
return -1;
} else {
PDEBUG(1, "SAA7111A sensor detected");
}
#endif
/* Set sensor-specific vars */
ov511->maxwidth = 640;
ov511->maxheight = 480; /* Even/Odd fields */
ov511->minwidth = 320;
ov511->minheight = 240; /* Even field only */
ov511->has_decoder = 1;
ov511->num_inputs = 8;
ov511->norm = VIDEO_MODE_AUTO;
ov511->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) */
ov511->brightness = 0x80 << 8;
ov511->contrast = 0x40 << 9;
ov511->colour = 0x40 << 9;
ov511->hue = 32768;
PDEBUG(4, "Writing SAA7111A registers");
if (ov511_write_regvals(ov511, aRegvalsNormSAA7111A))
return -1;
/* Detect version of decoder. This must be done after writing the
* initial regs or the decoder will lock up. */
rc = ov51x_i2c_read(ov511, 0x00);
if (rc < 0) {
err("Error detecting sensor version");
return -1;
} else {
info("Sensor is an SAA7111A (version 0x%x)", rc);
ov511->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 (ov511->bridge == BRG_OV511 || ov511->bridge == BRG_OV511PLUS)
ov511_reg_write(dev, 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 *ov511)
{
struct usb_device *dev = ov511->dev;
int i;
static struct ov511_regvals aRegvalsInit511[] = {
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x7f },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x7f },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x3f },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x3d },
{ OV511_DONE_BUS, 0x0, 0x00},
};
static struct ov511_regvals aRegvalsNorm511[] = {
{ OV511_REG_BUS, OV511_REG_DRAM_ENABLE_FLOW_CONTROL, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x03 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x01 },
{ OV511_REG_BUS, OV511_REG_FIFO_BITMASK, 0x1f },
{ OV511_REG_BUS, OV511_OMNICE_ENABLE, 0x00 },
{ OV511_REG_BUS, OV511_OMNICE_LUT_ENABLE, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
static struct ov511_regvals aRegvalsNorm511Plus[] = {
{ OV511_REG_BUS, OV511_REG_DRAM_ENABLE_FLOW_CONTROL, 0xff },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x01 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x03 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_SNAPSHOT, 0x01 },
{ OV511_REG_BUS, OV511_REG_FIFO_BITMASK, 0xff },
{ OV511_REG_BUS, OV511_OMNICE_ENABLE, 0x00 },
{ OV511_REG_BUS, OV511_OMNICE_LUT_ENABLE, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
PDEBUG(4, "");
ov511->customid = ov511_reg_read(dev, OV511_REG_SYSTEM_CUSTOM_ID);
if (ov511->customid < 0) {
err("Unable to read camera bridge registers");
goto error;
}
ov511->desc = -1;
PDEBUG (1, "CustomID = %d", ov511->customid);
for (i = 0; clist[i].id >= 0; i++) {
if (ov511->customid == clist[i].id) {
info("model: %s", clist[i].description);
ov511->desc = i;
break;
}
}
if (clist[i].id == -1) {
err("Camera type (%d) not recognized", ov511->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 (clist[i].id == 6) { /* USB Life TV (NTSC) */
ov511->tuner_type = 8; /* Temic 4036FY5 3X 1981 */
}
if (ov511_write_regvals(ov511, aRegvalsInit511)) goto error;
if (ov511->led_policy == LED_OFF || ov511->led_policy == LED_AUTO)
ov51x_led_control(ov511, 0);
/* The OV511+ has undocumented bits in the flow control register.
* Setting it to 0xff fixes the corruption with moving objects. */
if (ov511->bridge == BRG_OV511) {
if (ov511_write_regvals(ov511, aRegvalsNorm511)) goto error;
} else if (ov511->bridge == BRG_OV511PLUS) {
if (ov511_write_regvals(ov511, aRegvalsNorm511Plus)) goto error;
} else {
err("Invalid bridge");
}
if (ov511_init_compression(ov511)) goto error;
ov511_set_packet_size(ov511, 0);
ov511->snap_enabled = snapshot;
/* Test for 7xx0 */
PDEBUG(3, "Testing for 0V7xx0");
ov511->primary_i2c_slave = OV7xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV7xx0_I2C_WRITE_ID,
OV7xx0_I2C_READ_ID) < 0)
goto error;
if (ov51x_i2c_write(ov511, 0x12, 0x80) < 0) {
/* Test for 6xx0 */
PDEBUG(3, "Testing for 0V6xx0");
ov511->primary_i2c_slave = OV6xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV6xx0_I2C_WRITE_ID,
OV6xx0_I2C_READ_ID) < 0)
goto error;
if (ov51x_i2c_write(ov511, 0x12, 0x80) < 0) {
/* Test for 8xx0 */
PDEBUG(3, "Testing for 0V8xx0");
ov511->primary_i2c_slave = OV8xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV8xx0_I2C_WRITE_ID,
OV8xx0_I2C_READ_ID))
goto error;
if (ov51x_i2c_write(ov511, 0x12, 0x80) < 0) {
/* Test for SAA7111A */
PDEBUG(3, "Testing for SAA7111A");
ov511->primary_i2c_slave = SAA7111A_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, SAA7111A_I2C_WRITE_ID,
SAA7111A_I2C_READ_ID))
goto error;
if (ov51x_i2c_write(ov511, 0x0d, 0x00) < 0) {
/* Test for KS0127 */
PDEBUG(3, "Testing for KS0127");
ov511->primary_i2c_slave = KS0127_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, KS0127_I2C_WRITE_ID,
KS0127_I2C_READ_ID))
goto error;
if (ov51x_i2c_write(ov511, 0x10, 0x00) < 0) {
err("Can't determine sensor slave IDs");
goto error;
} else {
if(ks0127_configure(ov511) < 0) {
err("Failed to configure KS0127");
goto error;
}
}
} else {
if(saa7111a_configure(ov511) < 0) {
err("Failed to configure SAA7111A");
goto error;
}
}
} else {
err("Detected unsupported OV8xx0 sensor");
goto error;
}
} else {
if(ov6xx0_configure(ov511) < 0) {
err("Failed to configure OV6xx0");
goto error;
}
}
} else {
if(ov7xx0_configure(ov511) < 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 *ov511)
{
struct usb_device *dev = ov511->dev;
static struct ov511_regvals aRegvalsInit518[] = {
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x40 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0xe1 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x3e },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0xe1 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_RESET, 0x00 },
{ OV511_REG_BUS, OV511_REG_SYSTEM_INIT, 0xe1 },
{ OV511_REG_BUS, 0x46, 0x00 },
{ OV511_REG_BUS, 0x5d, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00},
};
/* New values, based on Windows driver. Since what they do is not
* known yet, this may be incorrect. */
static struct ov511_regvals aRegvalsNorm518[] = {
{ OV511_REG_BUS, 0x52, 0x02 }, /* Reset snapshot */
{ OV511_REG_BUS, 0x52, 0x01 }, /* Enable snapshot */
{ 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 }, /* Was 0x08 */
{ OV511_REG_BUS, 0x51, 0x04 },
{ OV511_REG_BUS, 0x71, 0x19 },
{ 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 & ov511_reg_read(dev, OV511_REG_SYSTEM_CUSTOM_ID));
if (ov511_write_regvals(ov511, aRegvalsInit518)) goto error;
/* Set LED GPIO pin to output mode */
if (ov511_reg_write_mask(dev, 0x57,0x00, 0x02) < 0) goto error;
/* LED is off by default with OV518; have to explicitly turn it on */
if (ov511->led_policy == LED_OFF || ov511->led_policy == LED_AUTO)
ov51x_led_control(ov511, 0);
else
ov51x_led_control(ov511, 1);
/* Don't require compression if dumppix is enabled; otherwise it's
* required. OV518 has no uncompressed mode, to save RAM. */
if (!dumppix && !ov511->compress) {
ov511->compress = 1;
warn("Compression required with OV518...enabling");
}
if (ov511_write_regvals(ov511, aRegvalsNorm518)) goto error;
if (ov511_reg_write(dev, 0x2f,0x80) < 0) goto error;
if (ov518_init_compression(ov511)) goto error;
ov511_set_packet_size(ov511, 0);
ov511->snap_enabled = snapshot;
/* Test for 76xx */
ov511->primary_i2c_slave = OV7xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV7xx0_I2C_WRITE_ID,
OV7xx0_I2C_READ_ID) < 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 (ov51x_init_ov_sensor(ov511) < 0) {
/* Test for 6xx0 */
ov511->primary_i2c_slave = OV6xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV6xx0_I2C_WRITE_ID,
OV6xx0_I2C_READ_ID) < 0)
goto error;
if (ov51x_init_ov_sensor(ov511) < 0) {
/* Test for 8xx0 */
ov511->primary_i2c_slave = OV8xx0_I2C_WRITE_ID;
if (ov51x_set_slave_ids(ov511, OV8xx0_I2C_WRITE_ID,
OV8xx0_I2C_READ_ID) < 0)
goto error;
if (ov51x_init_ov_sensor(ov511) < 0) {
err("Can't determine sensor slave IDs");
goto error;
} else {
err("Detected unsupported OV8xx0 sensor");
goto error;
}
} else {
if (ov6xx0_configure(ov511) < 0) {
err("Failed to configure OV6xx0");
goto error;
}
}
} else {
if (ov7xx0_configure(ov511) < 0) {
err("Failed to configure OV7xx0");
goto error;
}
}
// The OV518 cannot go as low as the sensor can
ov511->minwidth = 160;
ov511->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 *ov511;
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 ((ov511 = kmalloc(sizeof(*ov511), GFP_KERNEL)) == NULL) {
err("couldn't kmalloc ov511 struct");
goto error_unlock;
}
memset(ov511, 0, sizeof(*ov511));
ov511->dev = dev;
ov511->iface = interface->bInterfaceNumber;
ov511->led_policy = led;
ov511->compress = compress;
ov511->lightfreq = lightfreq;
ov511->num_inputs = 1; /* Video decoder init functs. change this */
ov511->stop_during_set = !fastset;
ov511->tuner_type = tuner;
ov511->backlight = backlight;
ov511->auto_brt = autobright;
ov511->auto_gain = autogain;
ov511->auto_exp = autoexp;
switch (dev->descriptor.idProduct) {
case PROD_OV511:
info("USB OV511 camera found");
ov511->bridge = BRG_OV511;
ov511->bclass = BCL_OV511;
break;
case PROD_OV511PLUS:
info("USB OV511+ camera found");
ov511->bridge = BRG_OV511PLUS;
ov511->bclass = BCL_OV511;
break;
case PROD_OV518:
info("USB OV518 camera found");
ov511->bridge = BRG_OV518;
ov511->bclass = BCL_OV518;
break;
case PROD_OV518PLUS:
info("USB OV518+ camera found");
ov511->bridge = BRG_OV518PLUS;
ov511->bclass = BCL_OV518;
break;
case PROD_ME2CAM:
if (dev->descriptor.idVendor != VEND_MATTEL)
goto error;
info("Intel Play Me2Cam (OV511+) found");
ov511->bridge = BRG_OV511PLUS;
ov511->bclass = BCL_OV511;
break;
default:
err("Unknown product ID 0x%x", dev->descriptor.idProduct);
goto error_dealloc;
}
/* Workaround for some applications that want data in RGB
* instead of BGR. */
if (force_rgb)
info("data format set to RGB");
init_waitqueue_head(&ov511->wq);
init_MUTEX(&ov511->lock); /* to 1 == available */
init_MUTEX(&ov511->buf_lock);
init_MUTEX(&ov511->param_lock);
init_MUTEX(&ov511->i2c_lock);
ov511->buf_state = BUF_NOT_ALLOCATED;
if (ov511->bridge == BRG_OV518 ||
ov511->bridge == BRG_OV518PLUS) {
if (ov518_configure(ov511) < 0)
goto error;
} else {
if (ov511_configure(ov511) < 0)
goto error;
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov511->frame[i].framenum = i;
init_waitqueue_head(&ov511->frame[i].wq);
}
/* 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(ov511) < 0)
goto error;
#ifdef OV511_DEBUG
if (dump_bridge)
ov511_dump_regs(dev);
#endif
memcpy(&ov511->vdev, &ov511_template, sizeof(ov511_template));
ov511->vdev.priv = ov511;
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(&ov511->vdev, VFL_TYPE_GRABBER,
unit_video[i]) >= 0) {
registered = 1;
break;
}
}
/* Use the next available one */
if (!registered &&
video_register_device(&ov511->vdev, VFL_TYPE_GRABBER, -1) < 0) {
err("video_register_device failed");
goto error;
}
info("Device registered on minor %d", ov511->vdev.minor);
MOD_DEC_USE_COUNT;
return ov511;
error:
err("Camera initialization failed");
#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
/* Safe to call even if entry doesn't exist */
destroy_proc_ov511_cam(ov511);
#endif
usb_driver_release_interface(&ov511_driver,
&dev->actconfig->interface[ov511->iface]);
error_dealloc:
if (ov511) {
kfree(ov511);
ov511 = NULL;
}
error_unlock:
MOD_DEC_USE_COUNT;
return NULL;
}
static void
ov51x_disconnect(struct usb_device *dev, void *ptr)
{
struct usb_ov511 *ov511 = (struct usb_ov511 *) ptr;
int n;
MOD_INC_USE_COUNT;
PDEBUG(3, "");
/* We don't want people trying to open up the device */
if (!ov511->user)
video_unregister_device(&ov511->vdev);
else
PDEBUG(3, "Device open...deferring video_unregister_device");
for (n = 0; n < OV511_NUMFRAMES; n++)
ov511->frame[n].grabstate = FRAME_ERROR;
ov511->curframe = -1;
/* This will cause the process to request another frame */
for (n = 0; n < OV511_NUMFRAMES; n++)
if (waitqueue_active(&ov511->frame[n].wq))
wake_up_interruptible(&ov511->frame[n].wq);
if (waitqueue_active(&ov511->wq))
wake_up_interruptible(&ov511->wq);
ov511->streaming = 0;
/* Unschedule all of the iso td's */
for (n = OV511_NUMSBUF - 1; n >= 0; n--) {
if (ov511->sbuf[n].urb) {
ov511->sbuf[n].urb->next = NULL;
usb_unlink_urb(ov511->sbuf[n].urb);
usb_free_urb(ov511->sbuf[n].urb);
ov511->sbuf[n].urb = NULL;
}
}
#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
destroy_proc_ov511_cam(ov511);
#endif
usb_driver_release_interface(&ov511_driver,
&ov511->dev->actconfig->interface[ov511->iface]);
ov511->dev = NULL;
/* Free the memory */
if (ov511 && !ov511->user) {
ov511_dealloc(ov511, 1);
kfree(ov511);
ov511 = NULL;
}
MOD_DEC_USE_COUNT;
}
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;
// FIXME: Don't know how to determine this yet
ov51x_mmx_available = 0;
#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);
/* No version, for compatibility with binary-only modules */
EXPORT_SYMBOL_NOVERS(ov511_register_decomp_module);
EXPORT_SYMBOL_NOVERS(ov511_deregister_decomp_module);
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