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linux/drivers/media/video/ov511.c
Arjan van de Ven fa027c2a0a [PATCH] mark struct file_operations const 4 
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

[akpm@sdl.org: dvb fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:45 -08:00

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/*
* OmniVision OV511 Camera-to-USB Bridge Driver
*
* Copyright (c) 1999-2003 Mark W. McClelland
* Original decompression code Copyright 1998-2000 OmniVision Technologies
* Many improvements by Bret Wallach <bwallac1@san.rr.com>
* Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000)
* Snapshot code by Kevin Moore
* OV7620 fixes by Charl P. Botha <cpbotha@ieee.org>
* Changes by Claudio Matsuoka <claudio@conectiva.com>
* Original SAA7111A code by Dave Perks <dperks@ibm.net>
* URB error messages from pwc driver by Nemosoft
* generic_ioctl() code from videodev.c by Gerd Knorr and Alan Cox
* Memory management (rvmalloc) code from bttv driver, by Gerd Knorr and others
*
* Based on the Linux CPiA driver written by Peter Pregler,
* Scott J. Bertin and Johannes Erdfelt.
*
* Please see the file: 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/module.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/ctype.h>
#include <linux/pagemap.h>
#include <asm/semaphore.h>
#include <asm/processor.h>
#include <linux/mm.h>
#include <linux/device.h>
#if defined (__i386__)
#include <asm/cpufeature.h>
#endif
#include "ov511.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v1.64 for Linux 2.5"
#define EMAIL "mark@alpha.dyndns.org"
#define DRIVER_AUTHOR "Mark McClelland <mark@alpha.dyndns.org> & Bret Wallach \
& Orion Sky Lawlor <olawlor@acm.org> & Kevin Moore & Charl P. Botha \
<cpbotha@ieee.org> & Claudio Matsuoka <claudio@conectiva.com>"
#define DRIVER_DESC "ov511 USB Camera Driver"
#define OV511_I2C_RETRIES 3
#define ENABLE_Y_QUANTABLE 1
#define ENABLE_UV_QUANTABLE 1
#define OV511_MAX_UNIT_VIDEO 16
/* Pixel count * bytes per YUV420 pixel (1.5) */
#define MAX_FRAME_SIZE(w, h) ((w) * (h) * 3 / 2)
#define MAX_DATA_SIZE(w, h) (MAX_FRAME_SIZE(w, h) + sizeof(struct timeval))
/* Max size * bytes per YUV420 pixel (1.5) + one extra isoc frame for safety */
#define MAX_RAW_DATA_SIZE(w, h) ((w) * (h) * 3 / 2 + 1024)
#define FATAL_ERROR(rc) ((rc) < 0 && (rc) != -EPERM)
/**********************************************************************
* Module Parameters
* (See ov511.txt for detailed descriptions of these)
**********************************************************************/
/* These variables (and all static globals) default to zero */
static int autobright = 1;
static int autogain = 1;
static int autoexp = 1;
static int debug;
static int snapshot;
static int cams = 1;
static int compress;
static int testpat;
static int dumppix;
static int led = 1;
static int dump_bridge;
static int dump_sensor;
static int printph;
static int phy = 0x1f;
static int phuv = 0x05;
static int pvy = 0x06;
static int pvuv = 0x06;
static int qhy = 0x14;
static int qhuv = 0x03;
static int qvy = 0x04;
static int qvuv = 0x04;
static int lightfreq;
static int bandingfilter;
static int clockdiv = -1;
static int packetsize = -1;
static int framedrop = -1;
static int fastset;
static int force_palette;
static int backlight;
static int unit_video[OV511_MAX_UNIT_VIDEO];
static int remove_zeros;
static int mirror;
static int ov518_color;
module_param(autobright, int, 0);
MODULE_PARM_DESC(autobright, "Sensor automatically changes brightness");
module_param(autogain, int, 0);
MODULE_PARM_DESC(autogain, "Sensor automatically changes gain");
module_param(autoexp, int, 0);
MODULE_PARM_DESC(autoexp, "Sensor automatically changes exposure");
module_param(debug, int, 0);
MODULE_PARM_DESC(debug,
"Debug level: 0=none, 1=inits, 2=warning, 3=config, 4=functions, 5=max");
module_param(snapshot, int, 0);
MODULE_PARM_DESC(snapshot, "Enable snapshot mode");
module_param(cams, int, 0);
MODULE_PARM_DESC(cams, "Number of simultaneous cameras");
module_param(compress, int, 0);
MODULE_PARM_DESC(compress, "Turn on compression");
module_param(testpat, int, 0);
MODULE_PARM_DESC(testpat,
"Replace image with vertical bar testpattern (only partially working)");
module_param(dumppix, int, 0);
MODULE_PARM_DESC(dumppix, "Dump raw pixel data");
module_param(led, int, 0);
MODULE_PARM_DESC(led,
"LED policy (OV511+ or later). 0=off, 1=on (default), 2=auto (on when open)");
module_param(dump_bridge, int, 0);
MODULE_PARM_DESC(dump_bridge, "Dump the bridge registers");
module_param(dump_sensor, int, 0);
MODULE_PARM_DESC(dump_sensor, "Dump the sensor registers");
module_param(printph, int, 0);
MODULE_PARM_DESC(printph, "Print frame start/end headers");
module_param(phy, int, 0);
MODULE_PARM_DESC(phy, "Prediction range (horiz. Y)");
module_param(phuv, int, 0);
MODULE_PARM_DESC(phuv, "Prediction range (horiz. UV)");
module_param(pvy, int, 0);
MODULE_PARM_DESC(pvy, "Prediction range (vert. Y)");
module_param(pvuv, int, 0);
MODULE_PARM_DESC(pvuv, "Prediction range (vert. UV)");
module_param(qhy, int, 0);
MODULE_PARM_DESC(qhy, "Quantization threshold (horiz. Y)");
module_param(qhuv, int, 0);
MODULE_PARM_DESC(qhuv, "Quantization threshold (horiz. UV)");
module_param(qvy, int, 0);
MODULE_PARM_DESC(qvy, "Quantization threshold (vert. Y)");
module_param(qvuv, int, 0);
MODULE_PARM_DESC(qvuv, "Quantization threshold (vert. UV)");
module_param(lightfreq, int, 0);
MODULE_PARM_DESC(lightfreq,
"Light frequency. Set to 50 or 60 Hz, or zero for default settings");
module_param(bandingfilter, int, 0);
MODULE_PARM_DESC(bandingfilter,
"Enable banding filter (to reduce effects of fluorescent lighting)");
module_param(clockdiv, int, 0);
MODULE_PARM_DESC(clockdiv, "Force pixel clock divisor to a specific value");
module_param(packetsize, int, 0);
MODULE_PARM_DESC(packetsize, "Force a specific isoc packet size");
module_param(framedrop, int, 0);
MODULE_PARM_DESC(framedrop, "Force a specific frame drop register setting");
module_param(fastset, int, 0);
MODULE_PARM_DESC(fastset, "Allows picture settings to take effect immediately");
module_param(force_palette, int, 0);
MODULE_PARM_DESC(force_palette, "Force the palette to a specific value");
module_param(backlight, int, 0);
MODULE_PARM_DESC(backlight, "For objects that are lit from behind");
static int num_uv;
module_param_array(unit_video, int, &num_uv, 0);
MODULE_PARM_DESC(unit_video,
"Force use of specific minor number(s). 0 is not allowed.");
module_param(remove_zeros, int, 0);
MODULE_PARM_DESC(remove_zeros,
"Remove zero-padding from uncompressed incoming data");
module_param(mirror, int, 0);
MODULE_PARM_DESC(mirror, "Reverse image horizontally");
module_param(ov518_color, int, 0);
MODULE_PARM_DESC(ov518_color, "Enable OV518 color (experimental)");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
/**********************************************************************
* Miscellaneous Globals
**********************************************************************/
static struct usb_driver ov511_driver;
/* Number of times to retry a failed I2C transaction. Increase this if you
* are getting "Failed to read sensor ID..." */
static const int i2c_detect_tries = 5;
static struct usb_device_id device_table [] = {
{ USB_DEVICE(VEND_OMNIVISION, PROD_OV511) },
{ USB_DEVICE(VEND_OMNIVISION, PROD_OV511PLUS) },
{ USB_DEVICE(VEND_OMNIVISION, PROD_OV518) },
{ USB_DEVICE(VEND_OMNIVISION, PROD_OV518PLUS) },
{ USB_DEVICE(VEND_MATTEL, PROD_ME2CAM) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, device_table);
static unsigned char yQuanTable511[] = OV511_YQUANTABLE;
static unsigned char uvQuanTable511[] = OV511_UVQUANTABLE;
static unsigned char yQuanTable518[] = OV518_YQUANTABLE;
static unsigned char uvQuanTable518[] = OV518_UVQUANTABLE;
/**********************************************************************
* Symbolic Names
**********************************************************************/
/* Known OV511-based cameras */
static struct symbolic_list camlist[] = {
{ 0, "Generic Camera (no ID)" },
{ 1, "Mustek WCam 3X" },
{ 3, "D-Link DSB-C300" },
{ 4, "Generic OV511/OV7610" },
{ 5, "Puretek PT-6007" },
{ 6, "Lifeview USB Life TV (NTSC)" },
{ 21, "Creative Labs WebCam 3" },
{ 22, "Lifeview USB Life TV (PAL D/K+B/G)" },
{ 36, "Koala-Cam" },
{ 38, "Lifeview USB Life TV (PAL)" },
{ 41, "Samsung Anycam MPC-M10" },
{ 43, "Mtekvision Zeca MV402" },
{ 46, "Suma eON" },
{ 70, "Lifeview USB Life TV (PAL/SECAM)" },
{ 100, "Lifeview RoboCam" },
{ 102, "AverMedia InterCam Elite" },
{ 112, "MediaForte MV300" }, /* or OV7110 evaluation kit */
{ 134, "Ezonics EZCam II" },
{ 192, "Webeye 2000B" },
{ 253, "Alpha Vision Tech. AlphaCam SE" },
{ -1, NULL }
};
/* Video4Linux1 Palettes */
static struct symbolic_list v4l1_plist[] = {
{ VIDEO_PALETTE_GREY, "GREY" },
{ VIDEO_PALETTE_HI240, "HI240" },
{ VIDEO_PALETTE_RGB565, "RGB565" },
{ VIDEO_PALETTE_RGB24, "RGB24" },
{ VIDEO_PALETTE_RGB32, "RGB32" },
{ VIDEO_PALETTE_RGB555, "RGB555" },
{ VIDEO_PALETTE_YUV422, "YUV422" },
{ VIDEO_PALETTE_YUYV, "YUYV" },
{ VIDEO_PALETTE_UYVY, "UYVY" },
{ VIDEO_PALETTE_YUV420, "YUV420" },
{ VIDEO_PALETTE_YUV411, "YUV411" },
{ VIDEO_PALETTE_RAW, "RAW" },
{ VIDEO_PALETTE_YUV422P,"YUV422P" },
{ VIDEO_PALETTE_YUV411P,"YUV411P" },
{ VIDEO_PALETTE_YUV420P,"YUV420P" },
{ VIDEO_PALETTE_YUV410P,"YUV410P" },
{ -1, NULL }
};
static struct symbolic_list brglist[] = {
{ BRG_OV511, "OV511" },
{ BRG_OV511PLUS, "OV511+" },
{ BRG_OV518, "OV518" },
{ BRG_OV518PLUS, "OV518+" },
{ -1, NULL }
};
static struct symbolic_list senlist[] = {
{ SEN_OV76BE, "OV76BE" },
{ SEN_OV7610, "OV7610" },
{ SEN_OV7620, "OV7620" },
{ SEN_OV7620AE, "OV7620AE" },
{ SEN_OV6620, "OV6620" },
{ SEN_OV6630, "OV6630" },
{ SEN_OV6630AE, "OV6630AE" },
{ SEN_OV6630AF, "OV6630AF" },
{ SEN_OV8600, "OV8600" },
{ SEN_KS0127, "KS0127" },
{ SEN_KS0127B, "KS0127B" },
{ SEN_SAA7111A, "SAA7111A" },
{ -1, NULL }
};
/* URB error codes: */
static struct symbolic_list urb_errlist[] = {
{ -ENOSR, "Buffer error (overrun)" },
{ -EPIPE, "Stalled (device not responding)" },
{ -EOVERFLOW, "Babble (device sends too much data)" },
{ -EPROTO, "Bit-stuff error (bad cable?)" },
{ -EILSEQ, "CRC/Timeout (bad cable?)" },
{ -ETIME, "Device does not respond to token" },
{ -ETIMEDOUT, "Device does not respond to command" },
{ -1, NULL }
};
/**********************************************************************
* Memory management
**********************************************************************/
static void *
rvmalloc(unsigned long size)
{
void *mem;
unsigned long adr;
size = PAGE_ALIGN(size);
mem = vmalloc_32(size);
if (!mem)
return NULL;
memset(mem, 0, size); /* Clear the ram out, no junk to the user */
adr = (unsigned long) mem;
while (size > 0) {
SetPageReserved(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
return mem;
}
static void
rvfree(void *mem, unsigned long size)
{
unsigned long adr;
if (!mem)
return;
adr = (unsigned long) mem;
while ((long) size > 0) {
ClearPageReserved(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
/**********************************************************************
*
* Register I/O
*
**********************************************************************/
/* Write an OV51x register */
static int
reg_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
{
int rc;
PDEBUG(5, "0x%02X:0x%02X", reg, value);
mutex_lock(&ov->cbuf_lock);
ov->cbuf[0] = value;
rc = usb_control_msg(ov->dev,
usb_sndctrlpipe(ov->dev, 0),
(ov->bclass == BCL_OV518)?1:2 /* REG_IO */,
USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, (__u16)reg, &ov->cbuf[0], 1, 1000);
mutex_unlock(&ov->cbuf_lock);
if (rc < 0)
err("reg write: error %d: %s", rc, symbolic(urb_errlist, rc));
return rc;
}
/* Read from an OV51x register */
/* returns: negative is error, pos or zero is data */
static int
reg_r(struct usb_ov511 *ov, unsigned char reg)
{
int rc;
mutex_lock(&ov->cbuf_lock);
rc = usb_control_msg(ov->dev,
usb_rcvctrlpipe(ov->dev, 0),
(ov->bclass == BCL_OV518)?1:3 /* REG_IO */,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, (__u16)reg, &ov->cbuf[0], 1, 1000);
if (rc < 0) {
err("reg read: error %d: %s", rc, symbolic(urb_errlist, rc));
} else {
rc = ov->cbuf[0];
PDEBUG(5, "0x%02X:0x%02X", reg, ov->cbuf[0]);
}
mutex_unlock(&ov->cbuf_lock);
return rc;
}
/*
* Writes bits at positions specified by mask to an OV51x reg. Bits that are in
* the same position as 1's in "mask" are cleared and set to "value". Bits
* that are in the same position as 0's in "mask" are preserved, regardless
* of their respective state in "value".
*/
static int
reg_w_mask(struct usb_ov511 *ov,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int ret;
unsigned char oldval, newval;
ret = reg_r(ov, reg);
if (ret < 0)
return ret;
oldval = (unsigned char) ret;
oldval &= (~mask); /* Clear the masked bits */
value &= mask; /* Enforce mask on value */
newval = oldval | value; /* Set the desired bits */
return (reg_w(ov, reg, newval));
}
/*
* Writes multiple (n) byte value to a single register. Only valid with certain
* registers (0x30 and 0xc4 - 0xce).
*/
static int
ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n)
{
int rc;
PDEBUG(5, "0x%02X:%7d, n=%d", reg, val, n);
mutex_lock(&ov->cbuf_lock);
*((__le32 *)ov->cbuf) = __cpu_to_le32(val);
rc = usb_control_msg(ov->dev,
usb_sndctrlpipe(ov->dev, 0),
1 /* REG_IO */,
USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, (__u16)reg, ov->cbuf, n, 1000);
mutex_unlock(&ov->cbuf_lock);
if (rc < 0)
err("reg write multiple: error %d: %s", rc,
symbolic(urb_errlist, rc));
return rc;
}
static int
ov511_upload_quan_tables(struct usb_ov511 *ov)
{
unsigned char *pYTable = yQuanTable511;
unsigned char *pUVTable = uvQuanTable511;
unsigned char val0, val1;
int i, rc, reg = R511_COMP_LUT_BEGIN;
PDEBUG(4, "Uploading quantization tables");
for (i = 0; i < OV511_QUANTABLESIZE / 2; i++) {
if (ENABLE_Y_QUANTABLE) {
val0 = *pYTable++;
val1 = *pYTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = reg_w(ov, reg, val0);
if (rc < 0)
return rc;
}
if (ENABLE_UV_QUANTABLE) {
val0 = *pUVTable++;
val1 = *pUVTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = reg_w(ov, reg + OV511_QUANTABLESIZE/2, val0);
if (rc < 0)
return rc;
}
reg++;
}
return 0;
}
/* OV518 quantization tables are 8x4 (instead of 8x8) */
static int
ov518_upload_quan_tables(struct usb_ov511 *ov)
{
unsigned char *pYTable = yQuanTable518;
unsigned char *pUVTable = uvQuanTable518;
unsigned char val0, val1;
int i, rc, reg = R511_COMP_LUT_BEGIN;
PDEBUG(4, "Uploading quantization tables");
for (i = 0; i < OV518_QUANTABLESIZE / 2; i++) {
if (ENABLE_Y_QUANTABLE) {
val0 = *pYTable++;
val1 = *pYTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = reg_w(ov, reg, val0);
if (rc < 0)
return rc;
}
if (ENABLE_UV_QUANTABLE) {
val0 = *pUVTable++;
val1 = *pUVTable++;
val0 &= 0x0f;
val1 &= 0x0f;
val0 |= val1 << 4;
rc = reg_w(ov, reg + OV518_QUANTABLESIZE/2, val0);
if (rc < 0)
return rc;
}
reg++;
}
return 0;
}
static int
ov51x_reset(struct usb_ov511 *ov, unsigned char reset_type)
{
int rc;
/* Setting bit 0 not allowed on 518/518Plus */
if (ov->bclass == BCL_OV518)
reset_type &= 0xfe;
PDEBUG(4, "Reset: type=0x%02X", reset_type);
rc = reg_w(ov, R51x_SYS_RESET, reset_type);
rc = reg_w(ov, R51x_SYS_RESET, 0);
if (rc < 0)
err("reset: command failed");
return rc;
}
/**********************************************************************
*
* Low-level I2C I/O functions
*
**********************************************************************/
/* NOTE: Do not call this function directly!
* The OV518 I2C I/O procedure is different, hence, this function.
* This is normally only called from i2c_w(). Note that this function
* always succeeds regardless of whether the sensor is present and working.
*/
static int
ov518_i2c_write_internal(struct usb_ov511 *ov,
unsigned char reg,
unsigned char value)
{
int rc;
PDEBUG(5, "0x%02X:0x%02X", reg, value);
/* Select camera register */
rc = reg_w(ov, R51x_I2C_SADDR_3, reg);
if (rc < 0)
return rc;
/* Write "value" to I2C data port of OV511 */
rc = reg_w(ov, R51x_I2C_DATA, value);
if (rc < 0)
return rc;
/* Initiate 3-byte write cycle */
rc = reg_w(ov, R518_I2C_CTL, 0x01);
if (rc < 0)
return rc;
return 0;
}
/* NOTE: Do not call this function directly! */
static int
ov511_i2c_write_internal(struct usb_ov511 *ov,
unsigned char reg,
unsigned char value)
{
int rc, retries;
PDEBUG(5, "0x%02X:0x%02X", reg, value);
/* Three byte write cycle */
for (retries = OV511_I2C_RETRIES; ; ) {
/* Select camera register */
rc = reg_w(ov, R51x_I2C_SADDR_3, reg);
if (rc < 0)
break;
/* Write "value" to I2C data port of OV511 */
rc = reg_w(ov, R51x_I2C_DATA, value);
if (rc < 0)
break;
/* Initiate 3-byte write cycle */
rc = reg_w(ov, R511_I2C_CTL, 0x01);
if (rc < 0)
break;
/* Retry until idle */
do
rc = reg_r(ov, R511_I2C_CTL);
while (rc > 0 && ((rc&1) == 0));
if (rc < 0)
break;
/* Ack? */
if ((rc&2) == 0) {
rc = 0;
break;
}
#if 0
/* I2C abort */
reg_w(ov, R511_I2C_CTL, 0x10);
#endif
if (--retries < 0) {
err("i2c write retries exhausted");
rc = -1;
break;
}
}
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 i2c_r(). Note that this function
* always succeeds regardless of whether the sensor is present and working.
*/
static int
ov518_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg)
{
int rc, value;
/* Select camera register */
rc = reg_w(ov, R51x_I2C_SADDR_2, reg);
if (rc < 0)
return rc;
/* Initiate 2-byte write cycle */
rc = reg_w(ov, R518_I2C_CTL, 0x03);
if (rc < 0)
return rc;
/* Initiate 2-byte read cycle */
rc = reg_w(ov, R518_I2C_CTL, 0x05);
if (rc < 0)
return rc;
value = reg_r(ov, R51x_I2C_DATA);
PDEBUG(5, "0x%02X:0x%02X", reg, value);
return value;
}
/* NOTE: Do not call this function directly!
* returns: negative is error, pos or zero is data */
static int
ov511_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg)
{
int rc, value, retries;
/* Two byte write cycle */
for (retries = OV511_I2C_RETRIES; ; ) {
/* Select camera register */
rc = reg_w(ov, R51x_I2C_SADDR_2, reg);
if (rc < 0)
return rc;
/* Initiate 2-byte write cycle */
rc = reg_w(ov, R511_I2C_CTL, 0x03);
if (rc < 0)
return rc;
/* Retry until idle */
do
rc = reg_r(ov, R511_I2C_CTL);
while (rc > 0 && ((rc&1) == 0));
if (rc < 0)
return rc;
if ((rc&2) == 0) /* Ack? */
break;
/* I2C abort */
reg_w(ov, R511_I2C_CTL, 0x10);
if (--retries < 0) {
err("i2c write retries exhausted");
return -1;
}
}
/* Two byte read cycle */
for (retries = OV511_I2C_RETRIES; ; ) {
/* Initiate 2-byte read cycle */
rc = reg_w(ov, R511_I2C_CTL, 0x05);
if (rc < 0)
return rc;
/* Retry until idle */
do
rc = reg_r(ov, R511_I2C_CTL);
while (rc > 0 && ((rc&1) == 0));
if (rc < 0)
return rc;
if ((rc&2) == 0) /* Ack? */
break;
/* I2C abort */
rc = reg_w(ov, R511_I2C_CTL, 0x10);
if (rc < 0)
return rc;
if (--retries < 0) {
err("i2c read retries exhausted");
return -1;
}
}
value = reg_r(ov, R51x_I2C_DATA);
PDEBUG(5, "0x%02X:0x%02X", reg, value);
/* This is needed to make i2c_w() work */
rc = reg_w(ov, R511_I2C_CTL, 0x05);
if (rc < 0)
return rc;
return value;
}
/* returns: negative is error, pos or zero is data */
static int
i2c_r(struct usb_ov511 *ov, unsigned char reg)
{
int rc;
mutex_lock(&ov->i2c_lock);
if (ov->bclass == BCL_OV518)
rc = ov518_i2c_read_internal(ov, reg);
else
rc = ov511_i2c_read_internal(ov, reg);
mutex_unlock(&ov->i2c_lock);
return rc;
}
static int
i2c_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
{
int rc;
mutex_lock(&ov->i2c_lock);
if (ov->bclass == BCL_OV518)
rc = ov518_i2c_write_internal(ov, reg, value);
else
rc = ov511_i2c_write_internal(ov, reg, value);
mutex_unlock(&ov->i2c_lock);
return rc;
}
/* Do not call this function directly! */
static int
ov51x_i2c_write_mask_internal(struct usb_ov511 *ov,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc;
unsigned char oldval, newval;
if (mask == 0xff) {
newval = value;
} else {
if (ov->bclass == BCL_OV518)
rc = ov518_i2c_read_internal(ov, reg);
else
rc = ov511_i2c_read_internal(ov, reg);
if (rc < 0)
return rc;
oldval = (unsigned char) rc;
oldval &= (~mask); /* Clear the masked bits */
value &= mask; /* Enforce mask on value */
newval = oldval | value; /* Set the desired bits */
}
if (ov->bclass == BCL_OV518)
return (ov518_i2c_write_internal(ov, reg, newval));
else
return (ov511_i2c_write_internal(ov, reg, newval));
}
/* Writes bits at positions specified by mask to an I2C reg. Bits that are in
* the same position as 1's in "mask" are cleared and set to "value". Bits
* that are in the same position as 0's in "mask" are preserved, regardless
* of their respective state in "value".
*/
static int
i2c_w_mask(struct usb_ov511 *ov,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc;
mutex_lock(&ov->i2c_lock);
rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask);
mutex_unlock(&ov->i2c_lock);
return rc;
}
/* Set the read and write slave IDs. The "slave" argument is the write slave,
* and the read slave will be set to (slave + 1). ov->i2c_lock should be held
* when calling this. This should not be called from outside the i2c I/O
* functions.
*/
static int
i2c_set_slave_internal(struct usb_ov511 *ov, unsigned char slave)
{
int rc;
rc = reg_w(ov, R51x_I2C_W_SID, slave);
if (rc < 0)
return rc;
rc = reg_w(ov, R51x_I2C_R_SID, slave + 1);
if (rc < 0)
return rc;
return 0;
}
/* Write to a specific I2C slave ID and register, using the specified mask */
static int
i2c_w_slave(struct usb_ov511 *ov,
unsigned char slave,
unsigned char reg,
unsigned char value,
unsigned char mask)
{
int rc = 0;
mutex_lock(&ov->i2c_lock);
/* Set new slave IDs */
rc = i2c_set_slave_internal(ov, slave);
if (rc < 0)
goto out;
rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask);
out:
/* Restore primary IDs */
if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
err("Couldn't restore primary I2C slave");
mutex_unlock(&ov->i2c_lock);
return rc;
}
/* Read from a specific I2C slave ID and register */
static int
i2c_r_slave(struct usb_ov511 *ov,
unsigned char slave,
unsigned char reg)
{
int rc;
mutex_lock(&ov->i2c_lock);
/* Set new slave IDs */
rc = i2c_set_slave_internal(ov, slave);
if (rc < 0)
goto out;
if (ov->bclass == BCL_OV518)
rc = ov518_i2c_read_internal(ov, reg);
else
rc = ov511_i2c_read_internal(ov, reg);
out:
/* Restore primary IDs */
if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
err("Couldn't restore primary I2C slave");
mutex_unlock(&ov->i2c_lock);
return rc;
}
/* Sets I2C read and write slave IDs. Returns <0 for error */
static int
ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid)
{
int rc;
mutex_lock(&ov->i2c_lock);
rc = i2c_set_slave_internal(ov, sid);
if (rc < 0)
goto out;
// FIXME: Is this actually necessary?
rc = ov51x_reset(ov, OV511_RESET_NOREGS);
out:
mutex_unlock(&ov->i2c_lock);
return rc;
}
static int
write_regvals(struct usb_ov511 *ov, struct ov511_regvals * pRegvals)
{
int rc;
while (pRegvals->bus != OV511_DONE_BUS) {
if (pRegvals->bus == OV511_REG_BUS) {
if ((rc = reg_w(ov, pRegvals->reg, pRegvals->val)) < 0)
return rc;
} else if (pRegvals->bus == OV511_I2C_BUS) {
if ((rc = i2c_w(ov, pRegvals->reg, pRegvals->val)) < 0)
return rc;
} else {
err("Bad regval array");
return -1;
}
pRegvals++;
}
return 0;
}
#ifdef OV511_DEBUG
static void
dump_i2c_range(struct usb_ov511 *ov, int reg1, int regn)
{
int i, rc;
for (i = reg1; i <= regn; i++) {
rc = i2c_r(ov, i);
info("Sensor[0x%02X] = 0x%02X", i, rc);
}
}
static void
dump_i2c_regs(struct usb_ov511 *ov)
{
info("I2C REGS");
dump_i2c_range(ov, 0x00, 0x7C);
}
static void
dump_reg_range(struct usb_ov511 *ov, int reg1, int regn)
{
int i, rc;
for (i = reg1; i <= regn; i++) {
rc = reg_r(ov, i);
info("OV511[0x%02X] = 0x%02X", i, rc);
}
}
static void
ov511_dump_regs(struct usb_ov511 *ov)
{
info("CAMERA INTERFACE REGS");
dump_reg_range(ov, 0x10, 0x1f);
info("DRAM INTERFACE REGS");
dump_reg_range(ov, 0x20, 0x23);
info("ISO FIFO REGS");
dump_reg_range(ov, 0x30, 0x31);
info("PIO REGS");
dump_reg_range(ov, 0x38, 0x39);
dump_reg_range(ov, 0x3e, 0x3e);
info("I2C REGS");
dump_reg_range(ov, 0x40, 0x49);
info("SYSTEM CONTROL REGS");
dump_reg_range(ov, 0x50, 0x55);
dump_reg_range(ov, 0x5e, 0x5f);
info("OmniCE REGS");
dump_reg_range(ov, 0x70, 0x79);
/* NOTE: Quantization tables are not readable. You will get the value
* in reg. 0x79 for every table register */
dump_reg_range(ov, 0x80, 0x9f);
dump_reg_range(ov, 0xa0, 0xbf);
}
static void
ov518_dump_regs(struct usb_ov511 *ov)
{
info("VIDEO MODE REGS");
dump_reg_range(ov, 0x20, 0x2f);
info("DATA PUMP AND SNAPSHOT REGS");
dump_reg_range(ov, 0x30, 0x3f);
info("I2C REGS");
dump_reg_range(ov, 0x40, 0x4f);
info("SYSTEM CONTROL AND VENDOR REGS");
dump_reg_range(ov, 0x50, 0x5f);
info("60 - 6F");
dump_reg_range(ov, 0x60, 0x6f);
info("70 - 7F");
dump_reg_range(ov, 0x70, 0x7f);
info("Y QUANTIZATION TABLE");
dump_reg_range(ov, 0x80, 0x8f);
info("UV QUANTIZATION TABLE");
dump_reg_range(ov, 0x90, 0x9f);
info("A0 - BF");
dump_reg_range(ov, 0xa0, 0xbf);
info("CBR");
dump_reg_range(ov, 0xc0, 0xcf);
}
#endif
/*****************************************************************************/
/* Temporarily stops OV511 from functioning. Must do this before changing
* registers while the camera is streaming */
static inline int
ov51x_stop(struct usb_ov511 *ov)
{
PDEBUG(4, "stopping");
ov->stopped = 1;
if (ov->bclass == BCL_OV518)
return (reg_w_mask(ov, R51x_SYS_RESET, 0x3a, 0x3a));
else
return (reg_w(ov, R51x_SYS_RESET, 0x3d));
}
/* Restarts OV511 after ov511_stop() is called. Has no effect if it is not
* actually stopped (for performance). */
static inline int
ov51x_restart(struct usb_ov511 *ov)
{
if (ov->stopped) {
PDEBUG(4, "restarting");
ov->stopped = 0;
/* Reinitialize the stream */
if (ov->bclass == BCL_OV518)
reg_w(ov, 0x2f, 0x80);
return (reg_w(ov, R51x_SYS_RESET, 0x00));
}
return 0;
}
/* Sleeps until no frames are active. Returns !0 if got signal */
static int
ov51x_wait_frames_inactive(struct usb_ov511 *ov)
{
return wait_event_interruptible(ov->wq, ov->curframe < 0);
}
/* Resets the hardware snapshot button */
static void
ov51x_clear_snapshot(struct usb_ov511 *ov)
{
if (ov->bclass == BCL_OV511) {
reg_w(ov, R51x_SYS_SNAP, 0x00);
reg_w(ov, R51x_SYS_SNAP, 0x02);
reg_w(ov, R51x_SYS_SNAP, 0x00);
} else if (ov->bclass == BCL_OV518) {
warn("snapshot reset not supported yet on OV518(+)");
} else {
err("clear snap: invalid bridge type");
}
}
#if 0
/* Checks the status of the snapshot button. Returns 1 if it was pressed since
* it was last cleared, and zero in all other cases (including errors) */
static int
ov51x_check_snapshot(struct usb_ov511 *ov)
{
int ret, status = 0;
if (ov->bclass == BCL_OV511) {
ret = reg_r(ov, R51x_SYS_SNAP);
if (ret < 0) {
err("Error checking snspshot status (%d)", ret);
} else if (ret & 0x08) {
status = 1;
}
} else if (ov->bclass == BCL_OV518) {
warn("snapshot check not supported yet on OV518(+)");
} else {
err("check snap: invalid bridge type");
}
return status;
}
#endif
/* This does an initial reset of an OmniVision sensor and ensures that I2C
* is synchronized. Returns <0 for failure.
*/
static int
init_ov_sensor(struct usb_ov511 *ov)
{
int i, success;
/* Reset the sensor */
if (i2c_w(ov, 0x12, 0x80) < 0)
return -EIO;
/* Wait for it to initialize */
msleep(150);
for (i = 0, success = 0; i < i2c_detect_tries && !success; i++) {
if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) &&
(i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) {
success = 1;
continue;
}
/* Reset the sensor */
if (i2c_w(ov, 0x12, 0x80) < 0)
return -EIO;
/* Wait for it to initialize */
msleep(150);
/* Dummy read to sync I2C */
if (i2c_r(ov, 0x00) < 0)
return -EIO;
}
if (!success)
return -EIO;
PDEBUG(1, "I2C synced in %d attempt(s)", i);
return 0;
}
static int
ov511_set_packet_size(struct usb_ov511 *ov, int size)
{
int alt, mult;
if (ov51x_stop(ov) < 0)
return -EIO;
mult = size >> 5;
if (ov->bridge == BRG_OV511) {
if (size == 0)
alt = OV511_ALT_SIZE_0;
else if (size == 257)
alt = OV511_ALT_SIZE_257;
else if (size == 513)
alt = OV511_ALT_SIZE_513;
else if (size == 769)
alt = OV511_ALT_SIZE_769;
else if (size == 993)
alt = OV511_ALT_SIZE_993;
else {
err("Set packet size: invalid size (%d)", size);
return -EINVAL;
}
} else if (ov->bridge == BRG_OV511PLUS) {
if (size == 0)
alt = OV511PLUS_ALT_SIZE_0;
else if (size == 33)
alt = OV511PLUS_ALT_SIZE_33;
else if (size == 129)
alt = OV511PLUS_ALT_SIZE_129;
else if (size == 257)
alt = OV511PLUS_ALT_SIZE_257;
else if (size == 385)
alt = OV511PLUS_ALT_SIZE_385;
else if (size == 513)
alt = OV511PLUS_ALT_SIZE_513;
else if (size == 769)
alt = OV511PLUS_ALT_SIZE_769;
else if (size == 961)
alt = OV511PLUS_ALT_SIZE_961;
else {
err("Set packet size: invalid size (%d)", size);
return -EINVAL;
}
} else {
err("Set packet size: Invalid bridge type");
return -EINVAL;
}
PDEBUG(3, "%d, mult=%d, alt=%d", size, mult, alt);
if (reg_w(ov, R51x_FIFO_PSIZE, mult) < 0)
return -EIO;
if (usb_set_interface(ov->dev, ov->iface, alt) < 0) {
err("Set packet size: set interface error");
return -EBUSY;
}
if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
return -EIO;
ov->packet_size = size;
if (ov51x_restart(ov) < 0)
return -EIO;
return 0;
}
/* Note: Unlike the OV511/OV511+, the size argument does NOT include the
* optional packet number byte. The actual size *is* stored in ov->packet_size,
* though. */
static int
ov518_set_packet_size(struct usb_ov511 *ov, int size)
{
int alt;
if (ov51x_stop(ov) < 0)
return -EIO;
if (ov->bclass == BCL_OV518) {
if (size == 0)
alt = OV518_ALT_SIZE_0;
else if (size == 128)
alt = OV518_ALT_SIZE_128;
else if (size == 256)
alt = OV518_ALT_SIZE_256;
else if (size == 384)
alt = OV518_ALT_SIZE_384;
else if (size == 512)
alt = OV518_ALT_SIZE_512;
else if (size == 640)
alt = OV518_ALT_SIZE_640;
else if (size == 768)
alt = OV518_ALT_SIZE_768;
else if (size == 896)
alt = OV518_ALT_SIZE_896;
else {
err("Set packet size: invalid size (%d)", size);
return -EINVAL;
}
} else {
err("Set packet size: Invalid bridge type");
return -EINVAL;
}
PDEBUG(3, "%d, alt=%d", size, alt);
ov->packet_size = size;
if (size > 0) {
/* Program ISO FIFO size reg (packet number isn't included) */
ov518_reg_w32(ov, 0x30, size, 2);
if (ov->packet_numbering)
++ov->packet_size;
}
if (usb_set_interface(ov->dev, ov->iface, alt) < 0) {
err("Set packet size: set interface error");
return -EBUSY;
}
/* Initialize the stream */
if (reg_w(ov, 0x2f, 0x80) < 0)
return -EIO;
if (ov51x_restart(ov) < 0)
return -EIO;
if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
return -EIO;
return 0;
}
/* Upload compression params and quantization tables. Returns 0 for success. */
static int
ov511_init_compression(struct usb_ov511 *ov)
{
int rc = 0;
if (!ov->compress_inited) {
reg_w(ov, 0x70, phy);
reg_w(ov, 0x71, phuv);
reg_w(ov, 0x72, pvy);
reg_w(ov, 0x73, pvuv);
reg_w(ov, 0x74, qhy);
reg_w(ov, 0x75, qhuv);
reg_w(ov, 0x76, qvy);
reg_w(ov, 0x77, qvuv);
if (ov511_upload_quan_tables(ov) < 0) {
err("Error uploading quantization tables");
rc = -EIO;
goto out;
}
}
ov->compress_inited = 1;
out:
return rc;
}
/* Upload compression params and quantization tables. Returns 0 for success. */
static int
ov518_init_compression(struct usb_ov511 *ov)
{
int rc = 0;
if (!ov->compress_inited) {
if (ov518_upload_quan_tables(ov) < 0) {
err("Error uploading quantization tables");
rc = -EIO;
goto out;
}
}
ov->compress_inited = 1;
out:
return rc;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's contrast setting to "val" */
static int
sensor_set_contrast(struct usb_ov511 *ov, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov->stop_during_set)
if (ov51x_stop(ov) < 0)
return -EIO;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV6620:
{
rc = i2c_w(ov, OV7610_REG_CNT, val >> 8);
if (rc < 0)
goto out;
break;
}
case SEN_OV6630:
{
rc = i2c_w_mask(ov, OV7610_REG_CNT, val >> 12, 0x0f);
if (rc < 0)
goto out;
break;
}
case SEN_OV7620:
{
unsigned char ctab[] = {
0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57,
0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff
};
/* Use Y gamma control instead. Bit 0 enables it. */
rc = i2c_w(ov, 0x64, ctab[val>>12]);
if (rc < 0)
goto out;
break;
}
case SEN_SAA7111A:
{
rc = i2c_w(ov, 0x0b, val >> 9);
if (rc < 0)
goto out;
break;
}
default:
{
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
}
rc = 0; /* Success */
ov->contrast = val;
out:
if (ov51x_restart(ov) < 0)
return -EIO;
return rc;
}
/* Gets sensor's contrast setting */
static int
sensor_get_contrast(struct usb_ov511 *ov, unsigned short *val)
{
int rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV6620:
rc = i2c_r(ov, OV7610_REG_CNT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_OV6630:
rc = i2c_r(ov, OV7610_REG_CNT);
if (rc < 0)
return rc;
else
*val = rc << 12;
break;
case SEN_OV7620:
/* Use Y gamma reg instead. Bit 0 is the enable bit. */
rc = i2c_r(ov, 0x64);
if (rc < 0)
return rc;
else
*val = (rc & 0xfe) << 8;
break;
case SEN_SAA7111A:
*val = ov->contrast;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov->contrast = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's brightness setting to "val" */
static int
sensor_set_brightness(struct usb_ov511 *ov, unsigned short val)
{
int rc;
PDEBUG(4, "%d", val);
if (ov->stop_during_set)
if (ov51x_stop(ov) < 0)
return -EIO;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV76BE:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_w(ov, OV7610_REG_BRT, val >> 8);
if (rc < 0)
goto out;
break;
case SEN_OV7620:
/* 7620 doesn't like manual changes when in auto mode */
if (!ov->auto_brt) {
rc = i2c_w(ov, OV7610_REG_BRT, val >> 8);
if (rc < 0)
goto out;
}
break;
case SEN_SAA7111A:
rc = i2c_w(ov, 0x0a, val >> 8);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov->brightness = val;
out:
if (ov51x_restart(ov) < 0)
return -EIO;
return rc;
}
/* Gets sensor's brightness setting */
static int
sensor_get_brightness(struct usb_ov511 *ov, unsigned short *val)
{
int rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV76BE:
case SEN_OV7620:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_r(ov, OV7610_REG_BRT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov->brightness;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov->brightness = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's saturation (color intensity) setting to "val" */
static int
sensor_set_saturation(struct usb_ov511 *ov, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov->stop_during_set)
if (ov51x_stop(ov) < 0)
return -EIO;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV76BE:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_w(ov, OV7610_REG_SAT, val >> 8);
if (rc < 0)
goto out;
break;
case SEN_OV7620:
// /* Use UV gamma control instead. Bits 0 & 7 are reserved. */
// rc = ov_i2c_write(ov->dev, 0x62, (val >> 9) & 0x7e);
// if (rc < 0)
// goto out;
rc = i2c_w(ov, OV7610_REG_SAT, val >> 8);
if (rc < 0)
goto out;
break;
case SEN_SAA7111A:
rc = i2c_w(ov, 0x0c, val >> 9);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov->colour = val;
out:
if (ov51x_restart(ov) < 0)
return -EIO;
return rc;
}
/* Gets sensor's saturation (color intensity) setting */
static int
sensor_get_saturation(struct usb_ov511 *ov, unsigned short *val)
{
int rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV76BE:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_r(ov, OV7610_REG_SAT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_OV7620:
// /* Use UV gamma reg instead. Bits 0 & 7 are reserved. */
// rc = i2c_r(ov, 0x62);
// if (rc < 0)
// return rc;
// else
// *val = (rc & 0x7e) << 9;
rc = i2c_r(ov, OV7610_REG_SAT);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov->colour;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov->colour = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
/* Sets sensor's hue (red/blue balance) setting to "val" */
static int
sensor_set_hue(struct usb_ov511 *ov, unsigned short val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov->stop_during_set)
if (ov51x_stop(ov) < 0)
return -EIO;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_w(ov, OV7610_REG_RED, 0xFF - (val >> 8));
if (rc < 0)
goto out;
rc = i2c_w(ov, OV7610_REG_BLUE, val >> 8);
if (rc < 0)
goto out;
break;
case SEN_OV7620:
// Hue control is causing problems. I will enable it once it's fixed.
#if 0
rc = i2c_w(ov, 0x7a, (unsigned char)(val >> 8) + 0xb);
if (rc < 0)
goto out;
rc = i2c_w(ov, 0x79, (unsigned char)(val >> 8) + 0xb);
if (rc < 0)
goto out;
#endif
break;
case SEN_SAA7111A:
rc = i2c_w(ov, 0x0d, (val + 32768) >> 8);
if (rc < 0)
goto out;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
rc = -EPERM;
goto out;
}
rc = 0; /* Success */
ov->hue = val;
out:
if (ov51x_restart(ov) < 0)
return -EIO;
return rc;
}
/* Gets sensor's hue (red/blue balance) setting */
static int
sensor_get_hue(struct usb_ov511 *ov, unsigned short *val)
{
int rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
rc = i2c_r(ov, OV7610_REG_BLUE);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_OV7620:
rc = i2c_r(ov, 0x7a);
if (rc < 0)
return rc;
else
*val = rc << 8;
break;
case SEN_SAA7111A:
*val = ov->hue;
break;
default:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
}
PDEBUG(3, "%d", *val);
ov->hue = *val;
return 0;
}
/* -------------------------------------------------------------------------- */
static int
sensor_set_picture(struct usb_ov511 *ov, struct video_picture *p)
{
int rc;
PDEBUG(4, "sensor_set_picture");
ov->whiteness = p->whiteness;
/* Don't return error if a setting is unsupported, or rest of settings
* will not be performed */
rc = sensor_set_contrast(ov, p->contrast);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_brightness(ov, p->brightness);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_saturation(ov, p->colour);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_hue(ov, p->hue);
if (FATAL_ERROR(rc))
return rc;
return 0;
}
static int
sensor_get_picture(struct usb_ov511 *ov, struct video_picture *p)
{
int rc;
PDEBUG(4, "sensor_get_picture");
/* Don't return error if a setting is unsupported, or rest of settings
* will not be performed */
rc = sensor_get_contrast(ov, &(p->contrast));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_brightness(ov, &(p->brightness));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_saturation(ov, &(p->colour));
if (FATAL_ERROR(rc))
return rc;
rc = sensor_get_hue(ov, &(p->hue));
if (FATAL_ERROR(rc))
return rc;
p->whiteness = 105 << 8;
return 0;
}
#if 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 *ov, unsigned char val)
{
int rc;
PDEBUG(3, "%d", val);
if (ov->stop_during_set)
if (ov51x_stop(ov) < 0)
return -EIO;
switch (ov->sensor) {
case SEN_OV6620:
case SEN_OV6630:
case SEN_OV7610:
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
rc = i2c_w(ov, 0x10, val);
if (rc < 0)
goto out;
break;
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for set_exposure");
return -EINVAL;
}
rc = 0; /* Success */
ov->exposure = val;
out:
if (ov51x_restart(ov) < 0)
return -EIO;
return rc;
}
#endif
/* Gets current exposure level from sensor, regardless of whether it is under
* manual control. */
static int
sensor_get_exposure(struct usb_ov511 *ov, unsigned char *val)
{
int rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV6620:
case SEN_OV6630:
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
rc = i2c_r(ov, 0x10);
if (rc < 0)
return rc;
else
*val = rc;
break;
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
val = NULL;
PDEBUG(3, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for get_exposure");
return -EINVAL;
}
PDEBUG(3, "%d", *val);
ov->exposure = *val;
return 0;
}
/* Turns on or off the LED. Only has an effect with OV511+/OV518(+) */
static void
ov51x_led_control(struct usb_ov511 *ov, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov->bridge == BRG_OV511PLUS)
reg_w(ov, R511_SYS_LED_CTL, enable ? 1 : 0);
else if (ov->bclass == BCL_OV518)
reg_w_mask(ov, R518_GPIO_OUT, enable ? 0x02 : 0x00, 0x02);
return;
}
/* Matches the sensor's internal frame rate to the lighting frequency.
* Valid frequencies are:
* 50 - 50Hz, for European and Asian lighting
* 60 - 60Hz, for American lighting
*
* Tested with: OV7610, OV7620, OV76BE, OV6620
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_light_freq(struct usb_ov511 *ov, int freq)
{
int sixty;
PDEBUG(4, "%d Hz", freq);
if (freq == 60)
sixty = 1;
else if (freq == 50)
sixty = 0;
else {
err("Invalid light freq (%d Hz)", freq);
return -EINVAL;
}
switch (ov->sensor) {
case SEN_OV7610:
i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80);
i2c_w(ov, 0x2b, sixty?0x00:0xac);
i2c_w_mask(ov, 0x13, 0x10, 0x10);
i2c_w_mask(ov, 0x13, 0x00, 0x10);
break;
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80);
i2c_w(ov, 0x2b, sixty?0x00:0xac);
i2c_w_mask(ov, 0x76, 0x01, 0x01);
break;
case SEN_OV6620:
case SEN_OV6630:
i2c_w(ov, 0x2b, sixty?0xa8:0x28);
i2c_w(ov, 0x2a, sixty?0x84:0xa4);
break;
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for set_light_freq");
return -EINVAL;
}
ov->lightfreq = freq;
return 0;
}
/* If enable is true, turn on the sensor's banding filter, otherwise turn it
* off. This filter tries to reduce the pattern of horizontal light/dark bands
* caused by some (usually fluorescent) lighting. The light frequency must be
* set either before or after enabling it with ov51x_set_light_freq().
*
* Tested with: OV7610, OV7620, OV76BE, OV6620.
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_banding_filter(struct usb_ov511 *ov, int enable)
{
int rc;
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B
|| ov->sensor == SEN_SAA7111A) {
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
}
rc = i2c_w_mask(ov, 0x2d, enable?0x04:0x00, 0x04);
if (rc < 0)
return rc;
ov->bandfilt = enable;
return 0;
}
/* If enable is true, turn on the sensor's auto brightness control, otherwise
* turn it off.
*
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_auto_brightness(struct usb_ov511 *ov, int enable)
{
int rc;
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B
|| ov->sensor == SEN_SAA7111A) {
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
}
rc = i2c_w_mask(ov, 0x2d, enable?0x10:0x00, 0x10);
if (rc < 0)
return rc;
ov->auto_brt = enable;
return 0;
}
/* If enable is true, turn on the sensor's auto exposure control, otherwise
* turn it off.
*
* Unsupported: KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_auto_exposure(struct usb_ov511 *ov, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
switch (ov->sensor) {
case SEN_OV7610:
i2c_w_mask(ov, 0x29, enable?0x00:0x80, 0x80);
break;
case SEN_OV6620:
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
i2c_w_mask(ov, 0x13, enable?0x01:0x00, 0x01);
break;
case SEN_OV6630:
i2c_w_mask(ov, 0x28, enable?0x00:0x10, 0x10);
break;
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for set_auto_exposure");
return -EINVAL;
}
ov->auto_exp = enable;
return 0;
}
/* Modifies the sensor's exposure algorithm to allow proper exposure of objects
* that are illuminated from behind.
*
* Tested with: OV6620, OV7620
* Unsupported: OV7610, OV76BE, KS0127, KS0127B, SAA7111A
* Returns: 0 for success
*/
static int
sensor_set_backlight(struct usb_ov511 *ov, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
switch (ov->sensor) {
case SEN_OV7620:
case SEN_OV8600:
i2c_w_mask(ov, 0x68, enable?0xe0:0xc0, 0xe0);
i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02);
break;
case SEN_OV6620:
i2c_w_mask(ov, 0x4e, enable?0xe0:0xc0, 0xe0);
i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
i2c_w_mask(ov, 0x0e, enable?0x80:0x00, 0x80);
break;
case SEN_OV6630:
i2c_w_mask(ov, 0x4e, enable?0x80:0x60, 0xe0);
i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02);
break;
case SEN_OV7610:
case SEN_OV76BE:
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for set_backlight");
return -EINVAL;
}
ov->backlight = enable;
return 0;
}
static int
sensor_set_mirror(struct usb_ov511 *ov, int enable)
{
PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
switch (ov->sensor) {
case SEN_OV6620:
case SEN_OV6630:
case SEN_OV7610:
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
i2c_w_mask(ov, 0x12, enable?0x40:0x00, 0x40);
break;
case SEN_KS0127:
case SEN_KS0127B:
case SEN_SAA7111A:
PDEBUG(5, "Unsupported with this sensor");
return -EPERM;
default:
err("Sensor not supported for set_mirror");
return -EINVAL;
}
ov->mirror = enable;
return 0;
}
/* Returns number of bits per pixel (regardless of where they are located;
* planar or not), or zero for unsupported format.
*/
static inline int
get_depth(int palette)
{
switch (palette) {
case VIDEO_PALETTE_GREY: return 8;
case VIDEO_PALETTE_YUV420: return 12;
case VIDEO_PALETTE_YUV420P: return 12; /* Planar */
default: return 0; /* Invalid format */
}
}
/* Bytes per frame. Used by read(). Return of 0 indicates error */
static inline long int
get_frame_length(struct ov511_frame *frame)
{
if (!frame)
return 0;
else
return ((frame->width * frame->height
* get_depth(frame->format)) >> 3);
}
static int
mode_init_ov_sensor_regs(struct usb_ov511 *ov, int width, int height,
int mode, int sub_flag, int qvga)
{
int clock;
/******** Mode (VGA/QVGA) and sensor specific regs ********/
switch (ov->sensor) {
case SEN_OV7610:
i2c_w(ov, 0x14, qvga?0x24:0x04);
// FIXME: Does this improve the image quality or frame rate?
#if 0
i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
i2c_w(ov, 0x24, 0x10);
i2c_w(ov, 0x25, qvga?0x40:0x8a);
i2c_w(ov, 0x2f, qvga?0x30:0xb0);
i2c_w(ov, 0x35, qvga?0x1c:0x9c);
#endif
break;
case SEN_OV7620:
// i2c_w(ov, 0x2b, 0x00);
i2c_w(ov, 0x14, qvga?0xa4:0x84);
i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
i2c_w(ov, 0x24, qvga?0x20:0x3a);
i2c_w(ov, 0x25, qvga?0x30:0x60);
i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40);
i2c_w_mask(ov, 0x67, qvga?0xf0:0x90, 0xf0);
i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20);
break;
case SEN_OV76BE:
// i2c_w(ov, 0x2b, 0x00);
i2c_w(ov, 0x14, qvga?0xa4:0x84);
// FIXME: Enable this once 7620AE uses 7620 initial settings
#if 0
i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
i2c_w(ov, 0x24, qvga?0x20:0x3a);
i2c_w(ov, 0x25, qvga?0x30:0x60);
i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40);
i2c_w_mask(ov, 0x67, qvga?0xb0:0x90, 0xf0);
i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20);
#endif
break;
case SEN_OV6620:
i2c_w(ov, 0x14, qvga?0x24:0x04);
break;
case SEN_OV6630:
i2c_w(ov, 0x14, qvga?0xa0:0x80);
break;
default:
err("Invalid sensor");
return -EINVAL;
}
/******** Palette-specific regs ********/
if (mode == VIDEO_PALETTE_GREY) {
if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
/* these aren't valid on the OV6620/OV7620/6630? */
i2c_w_mask(ov, 0x0e, 0x40, 0x40);
}
if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518
&& ov518_color) {
i2c_w_mask(ov, 0x12, 0x00, 0x10);
i2c_w_mask(ov, 0x13, 0x00, 0x20);
} else {
i2c_w_mask(ov, 0x13, 0x20, 0x20);
}
} else {
if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
/* not valid on the OV6620/OV7620/6630? */
i2c_w_mask(ov, 0x0e, 0x00, 0x40);
}
/* The OV518 needs special treatment. Although both the OV518
* and the OV6630 support a 16-bit video bus, only the 8 bit Y
* bus is actually used. The UV bus is tied to ground.
* Therefore, the OV6630 needs to be in 8-bit multiplexed
* output mode */
if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518
&& ov518_color) {
i2c_w_mask(ov, 0x12, 0x10, 0x10);
i2c_w_mask(ov, 0x13, 0x20, 0x20);
} else {
i2c_w_mask(ov, 0x13, 0x00, 0x20);
}
}
/******** Clock programming ********/
/* The OV6620 needs special handling. This prevents the
* severe banding that normally occurs */
if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630)
{
/* Clock down */
i2c_w(ov, 0x2a, 0x04);
if (ov->compress) {
// clock = 0; /* This ensures the highest frame rate */
clock = 3;
} else if (clockdiv == -1) { /* If user didn't override it */
clock = 3; /* Gives better exposure time */
} else {
clock = clockdiv;
}
PDEBUG(4, "Setting clock divisor to %d", clock);
i2c_w(ov, 0x11, clock);
i2c_w(ov, 0x2a, 0x84);
/* This next setting is critical. It seems to improve
* the gain or the contrast. The "reserved" bits seem
* to have some effect in this case. */
i2c_w(ov, 0x2d, 0x85);
}
else
{
if (ov->compress) {
clock = 1; /* This ensures the highest frame rate */
} else if (clockdiv == -1) { /* If user didn't override it */
/* Calculate and set the clock divisor */
clock = ((sub_flag ? ov->subw * ov->subh
: width * height)
* (mode == VIDEO_PALETTE_GREY ? 2 : 3) / 2)
/ 66000;
} else {
clock = clockdiv;
}
PDEBUG(4, "Setting clock divisor to %d", clock);
i2c_w(ov, 0x11, clock);
}
/******** Special Features ********/
if (framedrop >= 0)
i2c_w(ov, 0x16, framedrop);
/* Test Pattern */
i2c_w_mask(ov, 0x12, (testpat?0x02:0x00), 0x02);
/* Enable auto white balance */
i2c_w_mask(ov, 0x12, 0x04, 0x04);
// This will go away as soon as ov51x_mode_init_sensor_regs()
// is fully tested.
/* 7620/6620/6630? don't have register 0x35, so play it safe */
if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
if (width == 640 && height == 480)
i2c_w(ov, 0x35, 0x9e);
else
i2c_w(ov, 0x35, 0x1e);
}
return 0;
}
static int
set_ov_sensor_window(struct usb_ov511 *ov, int width, int height, int mode,
int sub_flag)
{
int ret;
int hwsbase, hwebase, vwsbase, vwebase, hwsize, vwsize;
int hoffset, voffset, hwscale = 0, vwscale = 0;
/* The different sensor ICs handle setting up of window differently.
* IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!!! */
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV76BE:
hwsbase = 0x38;
hwebase = 0x3a;
vwsbase = vwebase = 0x05;
break;
case SEN_OV6620:
case SEN_OV6630:
hwsbase = 0x38;
hwebase = 0x3a;
vwsbase = 0x05;
vwebase = 0x06;
break;
case SEN_OV7620:
hwsbase = 0x2f; /* From 7620.SET (spec is wrong) */
hwebase = 0x2f;
vwsbase = vwebase = 0x05;
break;
default:
err("Invalid sensor");
return -EINVAL;
}
if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) {
/* Note: OV518(+) does downsample on its own) */
if ((width > 176 && height > 144)
|| ov->bclass == BCL_OV518) { /* CIF */
ret = mode_init_ov_sensor_regs(ov, width, height,
mode, sub_flag, 0);
if (ret < 0)
return ret;
hwscale = 1;
vwscale = 1; /* The datasheet says 0; it's wrong */
hwsize = 352;
vwsize = 288;
} else if (width > 176 || height > 144) {
err("Illegal dimensions");
return -EINVAL;
} else { /* QCIF */
ret = mode_init_ov_sensor_regs(ov, width, height,
mode, sub_flag, 1);
if (ret < 0)
return ret;
hwsize = 176;
vwsize = 144;
}
} else {
if (width > 320 && height > 240) { /* VGA */
ret = mode_init_ov_sensor_regs(ov, width, height,
mode, sub_flag, 0);
if (ret < 0)
return ret;
hwscale = 2;
vwscale = 1;
hwsize = 640;
vwsize = 480;
} else if (width > 320 || height > 240) {
err("Illegal dimensions");
return -EINVAL;
} else { /* QVGA */
ret = mode_init_ov_sensor_regs(ov, width, height,
mode, sub_flag, 1);
if (ret < 0)
return ret;
hwscale = 1;
hwsize = 320;
vwsize = 240;
}
}
/* Center the window */
hoffset = ((hwsize - width) / 2) >> hwscale;
voffset = ((vwsize - height) / 2) >> vwscale;
/* FIXME! - This needs to be changed to support 160x120 and 6620!!! */
if (sub_flag) {
i2c_w(ov, 0x17, hwsbase+(ov->subx>>hwscale));
i2c_w(ov, 0x18, hwebase+((ov->subx+ov->subw)>>hwscale));
i2c_w(ov, 0x19, vwsbase+(ov->suby>>vwscale));
i2c_w(ov, 0x1a, vwebase+((ov->suby+ov->subh)>>vwscale));
} else {
i2c_w(ov, 0x17, hwsbase + hoffset);
i2c_w(ov, 0x18, hwebase + hoffset + (hwsize>>hwscale));
i2c_w(ov, 0x19, vwsbase + voffset);
i2c_w(ov, 0x1a, vwebase + voffset + (vwsize>>vwscale));
}
#ifdef OV511_DEBUG
if (dump_sensor)
dump_i2c_regs(ov);
#endif
return 0;
}
/* Set up the OV511/OV511+ with the given image parameters.
*
* Do not put any sensor-specific code in here (including I2C I/O functions)
*/
static int
ov511_mode_init_regs(struct usb_ov511 *ov,
int width, int height, int mode, int sub_flag)
{
int hsegs, vsegs;
if (sub_flag) {
width = ov->subw;
height = ov->subh;
}
PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d",
width, height, mode, sub_flag);
// FIXME: This should be moved to a 7111a-specific function once
// subcapture is dealt with properly
if (ov->sensor == SEN_SAA7111A) {
if (width == 320 && height == 240) {
/* No need to do anything special */
} else if (width == 640 && height == 480) {
/* Set the OV511 up as 320x480, but keep the
* V4L resolution as 640x480 */
width = 320;
} else {
err("SAA7111A only allows 320x240 or 640x480");
return -EINVAL;
}
}
/* Make sure width and height are a multiple of 8 */
if (width % 8 || height % 8) {
err("Invalid size (%d, %d) (mode = %d)", width, height, mode);
return -EINVAL;
}
if (width < ov->minwidth || height < ov->minheight) {
err("Requested dimensions are too small");
return -EINVAL;
}
if (ov51x_stop(ov) < 0)
return -EIO;
if (mode == VIDEO_PALETTE_GREY) {
reg_w(ov, R511_CAM_UV_EN, 0x00);
reg_w(ov, R511_SNAP_UV_EN, 0x00);
reg_w(ov, R511_SNAP_OPTS, 0x01);
} else {
reg_w(ov, R511_CAM_UV_EN, 0x01);
reg_w(ov, R511_SNAP_UV_EN, 0x01);
reg_w(ov, R511_SNAP_OPTS, 0x03);
}
/* Here I'm assuming that snapshot size == image size.
* I hope that's always true. --claudio
*/
hsegs = (width >> 3) - 1;
vsegs = (height >> 3) - 1;
reg_w(ov, R511_CAM_PXCNT, hsegs);
reg_w(ov, R511_CAM_LNCNT, vsegs);
reg_w(ov, R511_CAM_PXDIV, 0x00);
reg_w(ov, R511_CAM_LNDIV, 0x00);
/* YUV420, low pass filter on */
reg_w(ov, R511_CAM_OPTS, 0x03);
/* Snapshot additions */
reg_w(ov, R511_SNAP_PXCNT, hsegs);
reg_w(ov, R511_SNAP_LNCNT, vsegs);
reg_w(ov, R511_SNAP_PXDIV, 0x00);
reg_w(ov, R511_SNAP_LNDIV, 0x00);
if (ov->compress) {
/* Enable Y and UV quantization and compression */
reg_w(ov, R511_COMP_EN, 0x07);
reg_w(ov, R511_COMP_LUT_EN, 0x03);
ov51x_reset(ov, OV511_RESET_OMNICE);
}
if (ov51x_restart(ov) < 0)
return -EIO;
return 0;
}
/* Sets up the OV518/OV518+ with the given image parameters
*
* OV518 needs a completely different approach, until we can figure out what
* the individual registers do. Also, only 15 FPS is supported now.
*
* Do not put any sensor-specific code in here (including I2C I/O functions)
*/
static int
ov518_mode_init_regs(struct usb_ov511 *ov,
int width, int height, int mode, int sub_flag)
{
int hsegs, vsegs, hi_res;
if (sub_flag) {
width = ov->subw;
height = ov->subh;
}
PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d",
width, height, mode, sub_flag);
if (width % 16 || height % 8) {
err("Invalid size (%d, %d)", width, height);
return -EINVAL;
}
if (width < ov->minwidth || height < ov->minheight) {
err("Requested dimensions are too small");
return -EINVAL;
}
if (width >= 320 && height >= 240) {
hi_res = 1;
} else if (width >= 320 || height >= 240) {
err("Invalid width/height combination (%d, %d)", width, height);
return -EINVAL;
} else {
hi_res = 0;
}
if (ov51x_stop(ov) < 0)
return -EIO;
/******** Set the mode ********/
reg_w(ov, 0x2b, 0);
reg_w(ov, 0x2c, 0);
reg_w(ov, 0x2d, 0);
reg_w(ov, 0x2e, 0);
reg_w(ov, 0x3b, 0);
reg_w(ov, 0x3c, 0);
reg_w(ov, 0x3d, 0);
reg_w(ov, 0x3e, 0);
if (ov->bridge == BRG_OV518 && ov518_color) {
/* OV518 needs U and V swapped */
i2c_w_mask(ov, 0x15, 0x00, 0x01);
if (mode == VIDEO_PALETTE_GREY) {
/* Set 16-bit input format (UV data are ignored) */
reg_w_mask(ov, 0x20, 0x00, 0x08);
/* Set 8-bit (4:0:0) output format */
reg_w_mask(ov, 0x28, 0x00, 0xf0);
reg_w_mask(ov, 0x38, 0x00, 0xf0);
} else {
/* Set 8-bit (YVYU) input format */
reg_w_mask(ov, 0x20, 0x08, 0x08);
/* Set 12-bit (4:2:0) output format */
reg_w_mask(ov, 0x28, 0x80, 0xf0);
reg_w_mask(ov, 0x38, 0x80, 0xf0);
}
} else {
reg_w(ov, 0x28, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80);
reg_w(ov, 0x38, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80);
}
hsegs = width / 16;
vsegs = height / 4;
reg_w(ov, 0x29, hsegs);
reg_w(ov, 0x2a, vsegs);
reg_w(ov, 0x39, hsegs);
reg_w(ov, 0x3a, vsegs);
/* Windows driver does this here; who knows why */
reg_w(ov, 0x2f, 0x80);
/******** Set the framerate (to 15 FPS) ********/
/* Mode independent, but framerate dependent, regs */
reg_w(ov, 0x51, 0x02); /* Clock divider; lower==faster */
reg_w(ov, 0x22, 0x18);
reg_w(ov, 0x23, 0xff);
if (ov->bridge == BRG_OV518PLUS)
reg_w(ov, 0x21, 0x19);
else
reg_w(ov, 0x71, 0x19); /* Compression-related? */
// FIXME: Sensor-specific
/* Bit 5 is what matters here. Of course, it is "reserved" */
i2c_w(ov, 0x54, 0x23);
reg_w(ov, 0x2f, 0x80);
if (ov->bridge == BRG_OV518PLUS) {
reg_w(ov, 0x24, 0x94);
reg_w(ov, 0x25, 0x90);
ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */
ov518_reg_w32(ov, 0xc6, 540, 2); /* 21ch */
ov518_reg_w32(ov, 0xc7, 540, 2); /* 21ch */
ov518_reg_w32(ov, 0xc8, 108, 2); /* 6ch */
ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */
ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */
ov518_reg_w32(ov, 0xcc, 2400, 2); /* 960h */
ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */
ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */
} else {
reg_w(ov, 0x24, 0x9f);
reg_w(ov, 0x25, 0x90);
ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */
ov518_reg_w32(ov, 0xc6, 500, 2); /* 1f4h */
ov518_reg_w32(ov, 0xc7, 500, 2); /* 1f4h */
ov518_reg_w32(ov, 0xc8, 142, 2); /* 8eh */
ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */
ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */
ov518_reg_w32(ov, 0xcc, 2000, 2); /* 7d0h */
ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */
ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */
}
reg_w(ov, 0x2f, 0x80);
if (ov51x_restart(ov) < 0)
return -EIO;
/* Reset it just for good measure */
if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
return -EIO;
return 0;
}
/* This is a wrapper around the OV511, OV518, and sensor specific functions */
static int
mode_init_regs(struct usb_ov511 *ov,
int width, int height, int mode, int sub_flag)
{
int rc = 0;
if (!ov || !ov->dev)
return -EFAULT;
if (ov->bclass == BCL_OV518) {
rc = ov518_mode_init_regs(ov, width, height, mode, sub_flag);
} else {
rc = ov511_mode_init_regs(ov, width, height, mode, sub_flag);
}
if (FATAL_ERROR(rc))
return rc;
switch (ov->sensor) {
case SEN_OV7610:
case SEN_OV7620:
case SEN_OV76BE:
case SEN_OV8600:
case SEN_OV6620:
case SEN_OV6630:
rc = set_ov_sensor_window(ov, width, height, mode, sub_flag);
break;
case SEN_KS0127:
case SEN_KS0127B:
err("KS0127-series decoders not supported yet");
rc = -EINVAL;
break;
case SEN_SAA7111A:
// rc = mode_init_saa_sensor_regs(ov, width, height, mode,
// sub_flag);
PDEBUG(1, "SAA status = 0x%02X", i2c_r(ov, 0x1f));
break;
default:
err("Unknown sensor");
rc = -EINVAL;
}
if (FATAL_ERROR(rc))
return rc;
/* Sensor-independent settings */
rc = sensor_set_auto_brightness(ov, ov->auto_brt);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_auto_exposure(ov, ov->auto_exp);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_banding_filter(ov, bandingfilter);
if (FATAL_ERROR(rc))
return rc;
if (ov->lightfreq) {
rc = sensor_set_light_freq(ov, lightfreq);
if (FATAL_ERROR(rc))
return rc;
}
rc = sensor_set_backlight(ov, ov->backlight);
if (FATAL_ERROR(rc))
return rc;
rc = sensor_set_mirror(ov, ov->mirror);
if (FATAL_ERROR(rc))
return rc;
return 0;
}
/* This sets the default image parameters. This is useful for apps that use
* read() and do not set these.
*/
static int
ov51x_set_default_params(struct usb_ov511 *ov)
{
int i;
/* Set default sizes in case IOCTL (VIDIOCMCAPTURE) is not used
* (using read() instead). */
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].width = ov->maxwidth;
ov->frame[i].height = ov->maxheight;
ov->frame[i].bytes_read = 0;
if (force_palette)
ov->frame[i].format = force_palette;
else
ov->frame[i].format = VIDEO_PALETTE_YUV420;
ov->frame[i].depth = get_depth(ov->frame[i].format);
}
PDEBUG(3, "%dx%d, %s", ov->maxwidth, ov->maxheight,
symbolic(v4l1_plist, ov->frame[0].format));
/* Initialize to max width/height, YUV420 or RGB24 (if supported) */
if (mode_init_regs(ov, ov->maxwidth, ov->maxheight,
ov->frame[0].format, 0) < 0)
return -EINVAL;
return 0;
}
/**********************************************************************
*
* Video decoder stuff
*
**********************************************************************/
/* Set analog input port of decoder */
static int
decoder_set_input(struct usb_ov511 *ov, int input)
{
PDEBUG(4, "port %d", input);
switch (ov->sensor) {
case SEN_SAA7111A:
{
/* Select mode */
i2c_w_mask(ov, 0x02, input, 0x07);
/* Bypass chrominance trap for modes 4..7 */
i2c_w_mask(ov, 0x09, (input > 3) ? 0x80:0x00, 0x80);
break;
}
default:
return -EINVAL;
}
return 0;
}
/* Get ASCII name of video input */
static int
decoder_get_input_name(struct usb_ov511 *ov, int input, char *name)
{
switch (ov->sensor) {
case SEN_SAA7111A:
{
if (input < 0 || input > 7)
return -EINVAL;
else if (input < 4)
sprintf(name, "CVBS-%d", input);
else // if (input < 8)
sprintf(name, "S-Video-%d", input - 4);
break;
}
default:
sprintf(name, "%s", "Camera");
}
return 0;
}
/* Set norm (NTSC, PAL, SECAM, AUTO) */
static int
decoder_set_norm(struct usb_ov511 *ov, int norm)
{
PDEBUG(4, "%d", norm);
switch (ov->sensor) {
case SEN_SAA7111A:
{
int reg_8, reg_e;
if (norm == VIDEO_MODE_NTSC) {
reg_8 = 0x40; /* 60 Hz */
reg_e = 0x00; /* NTSC M / PAL BGHI */
} else if (norm == VIDEO_MODE_PAL) {
reg_8 = 0x00; /* 50 Hz */
reg_e = 0x00; /* NTSC M / PAL BGHI */
} else if (norm == VIDEO_MODE_AUTO) {
reg_8 = 0x80; /* Auto field detect */
reg_e = 0x00; /* NTSC M / PAL BGHI */
} else if (norm == VIDEO_MODE_SECAM) {
reg_8 = 0x00; /* 50 Hz */
reg_e = 0x50; /* SECAM / PAL 4.43 */
} else {
return -EINVAL;
}
i2c_w_mask(ov, 0x08, reg_8, 0xc0);
i2c_w_mask(ov, 0x0e, reg_e, 0x70);
break;
}
default:
return -EINVAL;
}
return 0;
}
/**********************************************************************
*
* Raw data parsing
*
**********************************************************************/
/* Copies a 64-byte segment at pIn to an 8x8 block at pOut. The width of the
* image at pOut is specified by w.
*/
static inline void
make_8x8(unsigned char *pIn, unsigned char *pOut, int w)
{
unsigned char *pOut1 = pOut;
int x, y;
for (y = 0; y < 8; y++) {
pOut1 = pOut;
for (x = 0; x < 8; x++) {
*pOut1++ = *pIn++;
}
pOut += w;
}
}
/*
* For RAW BW (YUV 4:0:0) images, data show up in 256 byte segments.
* The segments represent 4 squares of 8x8 pixels as follows:
*
* 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199
* 8 9 ... 15 72 73 ... 79 200 201 ... 207
* ... ... ...
* 56 57 ... 63 120 121 ... 127 248 249 ... 255
*
*/
static void
yuv400raw_to_yuv400p(struct ov511_frame *frame,
unsigned char *pIn0, unsigned char *pOut0)
{
int x, y;
unsigned char *pIn, *pOut, *pOutLine;
/* Copy Y */
pIn = pIn0;
pOutLine = pOut0;
for (y = 0; y < frame->rawheight - 1; y += 8) {
pOut = pOutLine;
for (x = 0; x < frame->rawwidth - 1; x += 8) {
make_8x8(pIn, pOut, frame->rawwidth);
pIn += 64;
pOut += 8;
}
pOutLine += 8 * frame->rawwidth;
}
}
/*
* For YUV 4:2:0 images, the data show up in 384 byte segments.
* The first 64 bytes of each segment are U, the next 64 are V. The U and
* V are arranged as follows:
*
* 0 1 ... 7
* 8 9 ... 15
* ...
* 56 57 ... 63
*
* U and V are shipped at half resolution (1 U,V sample -> one 2x2 block).
*
* The next 256 bytes are full resolution Y data and represent 4 squares
* of 8x8 pixels as follows:
*
* 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199
* 8 9 ... 15 72 73 ... 79 200 201 ... 207
* ... ... ...
* 56 57 ... 63 120 121 ... 127 ... 248 249 ... 255
*
* Note that the U and V data in one segment represent a 16 x 16 pixel
* area, but the Y data represent a 32 x 8 pixel area. If the width is not an
* even multiple of 32, the extra 8x8 blocks within a 32x8 block belong to the
* next horizontal stripe.
*
* If dumppix module param is set, _parse_data just dumps the incoming segments,
* verbatim, in order, into the frame. When used with vidcat -f ppm -s 640x480
* this puts the data on the standard output and can be analyzed with the
* parseppm.c utility I wrote. That's a much faster way for figuring out how
* these data are scrambled.
*/
/* Converts from raw, uncompressed segments at pIn0 to a YUV420P frame at pOut0.
*
* FIXME: Currently only handles width and height that are multiples of 16
*/
static void
yuv420raw_to_yuv420p(struct ov511_frame *frame,
unsigned char *pIn0, unsigned char *pOut0)
{
int k, x, y;
unsigned char *pIn, *pOut, *pOutLine;
const unsigned int a = frame->rawwidth * frame->rawheight;
const unsigned int w = frame->rawwidth / 2;
/* Copy U and V */
pIn = pIn0;
pOutLine = pOut0 + a;
for (y = 0; y < frame->rawheight - 1; y += 16) {
pOut = pOutLine;
for (x = 0; x < frame->rawwidth - 1; x += 16) {
make_8x8(pIn, pOut, w);
make_8x8(pIn + 64, pOut + a/4, w);
pIn += 384;
pOut += 8;
}
pOutLine += 8 * w;
}
/* Copy Y */
pIn = pIn0 + 128;
pOutLine = pOut0;
k = 0;
for (y = 0; y < frame->rawheight - 1; y += 8) {
pOut = pOutLine;
for (x = 0; x < frame->rawwidth - 1; x += 8) {
make_8x8(pIn, pOut, frame->rawwidth);
pIn += 64;
pOut += 8;
if ((++k) > 3) {
k = 0;
pIn += 128;
}
}
pOutLine += 8 * frame->rawwidth;
}
}
/**********************************************************************
*
* Decompression
*
**********************************************************************/
static int
request_decompressor(struct usb_ov511 *ov)
{
if (ov->bclass == BCL_OV511 || ov->bclass == BCL_OV518) {
err("No decompressor available");
} else {
err("Unknown bridge");
}
return -ENOSYS;
}
static void
decompress(struct usb_ov511 *ov, struct ov511_frame *frame,
unsigned char *pIn0, unsigned char *pOut0)
{
if (!ov->decomp_ops)
if (request_decompressor(ov))
return;
}
/**********************************************************************
*
* Format conversion
*
**********************************************************************/
/* Fuses even and odd fields together, and doubles width.
* INPUT: an odd field followed by an even field at pIn0, in YUV planar format
* OUTPUT: a normal YUV planar image, with correct aspect ratio
*/
static void
deinterlace(struct ov511_frame *frame, int rawformat,
unsigned char *pIn0, unsigned char *pOut0)
{
const int fieldheight = frame->rawheight / 2;
const int fieldpix = fieldheight * frame->rawwidth;
const int w = frame->width;
int x, y;
unsigned char *pInEven, *pInOdd, *pOut;
PDEBUG(5, "fieldheight=%d", fieldheight);
if (frame->rawheight != frame->height) {
err("invalid height");
return;
}
if ((frame->rawwidth * 2) != frame->width) {
err("invalid width");
return;
}
/* Y */
pInOdd = pIn0;
pInEven = pInOdd + fieldpix;
pOut = pOut0;
for (y = 0; y < fieldheight; y++) {
for (x = 0; x < frame->rawwidth; x++) {
*pOut = *pInEven;
*(pOut+1) = *pInEven++;
*(pOut+w) = *pInOdd;
*(pOut+w+1) = *pInOdd++;
pOut += 2;
}
pOut += w;
}
if (rawformat == RAWFMT_YUV420) {
/* U */
pInOdd = pIn0 + fieldpix * 2;
pInEven = pInOdd + fieldpix / 4;
for (y = 0; y < fieldheight / 2; y++) {
for (x = 0; x < frame->rawwidth / 2; x++) {
*pOut = *pInEven;
*(pOut+1) = *pInEven++;
*(pOut+w/2) = *pInOdd;
*(pOut+w/2+1) = *pInOdd++;
pOut += 2;
}
pOut += w/2;
}
/* V */
pInOdd = pIn0 + fieldpix * 2 + fieldpix / 2;
pInEven = pInOdd + fieldpix / 4;
for (y = 0; y < fieldheight / 2; y++) {
for (x = 0; x < frame->rawwidth / 2; x++) {
*pOut = *pInEven;
*(pOut+1) = *pInEven++;
*(pOut+w/2) = *pInOdd;
*(pOut+w/2+1) = *pInOdd++;
pOut += 2;
}
pOut += w/2;
}
}
}
static void
ov51x_postprocess_grey(struct usb_ov511 *ov, struct ov511_frame *frame)
{
/* Deinterlace frame, if necessary */
if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) {
if (frame->compressed)
decompress(ov, frame, frame->rawdata,
frame->tempdata);
else
yuv400raw_to_yuv400p(frame, frame->rawdata,
frame->tempdata);
deinterlace(frame, RAWFMT_YUV400, frame->tempdata,
frame->data);
} else {
if (frame->compressed)
decompress(ov, frame, frame->rawdata,
frame->data);
else
yuv400raw_to_yuv400p(frame, frame->rawdata,
frame->data);
}
}
/* Process raw YUV420 data into standard YUV420P */
static void
ov51x_postprocess_yuv420(struct usb_ov511 *ov, struct ov511_frame *frame)
{
/* Deinterlace frame, if necessary */
if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) {
if (frame->compressed)
decompress(ov, frame, frame->rawdata, frame->tempdata);
else
yuv420raw_to_yuv420p(frame, frame->rawdata,
frame->tempdata);
deinterlace(frame, RAWFMT_YUV420, frame->tempdata,
frame->data);
} else {
if (frame->compressed)
decompress(ov, frame, frame->rawdata, frame->data);
else
yuv420raw_to_yuv420p(frame, frame->rawdata,
frame->data);
}
}
/* Post-processes the specified frame. This consists of:
* 1. Decompress frame, if necessary
* 2. Deinterlace frame and scale to proper size, if necessary
* 3. Convert from YUV planar to destination format, if necessary
* 4. Fix the RGB offset, if necessary
*/
static void
ov51x_postprocess(struct usb_ov511 *ov, struct ov511_frame *frame)
{
if (dumppix) {
memset(frame->data, 0,
MAX_DATA_SIZE(ov->maxwidth, ov->maxheight));
PDEBUG(4, "Dumping %d bytes", frame->bytes_recvd);
memcpy(frame->data, frame->rawdata, frame->bytes_recvd);
} else {
switch (frame->format) {
case VIDEO_PALETTE_GREY:
ov51x_postprocess_grey(ov, frame);
break;
case VIDEO_PALETTE_YUV420:
case VIDEO_PALETTE_YUV420P:
ov51x_postprocess_yuv420(ov, frame);
break;
default:
err("Cannot convert data to %s",
symbolic(v4l1_plist, frame->format));
}
}
}
/**********************************************************************
*
* OV51x data transfer, IRQ handler
*
**********************************************************************/
static inline void
ov511_move_data(struct usb_ov511 *ov, unsigned char *in, int n)
{
int num, offset;
int pnum = in[ov->packet_size - 1]; /* Get packet number */
int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight);
struct ov511_frame *frame = &ov->frame[ov->curframe];
struct timeval *ts;
/* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th
* byte non-zero. The EOF packet has image width/height in the
* 10th and 11th bytes. The 9th byte is given as follows:
*
* bit 7: EOF
* 6: compression enabled
* 5: 422/420/400 modes
* 4: 422/420/400 modes
* 3: 1
* 2: snapshot button on
* 1: snapshot frame
* 0: even/odd field
*/
if (printph) {
info("ph(%3d): %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x",
pnum, in[0], in[1], in[2], in[3], in[4], in[5], in[6],
in[7], in[8], in[9], in[10], in[11]);
}
/* Check for SOF/EOF packet */
if ((in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) ||
(~in[8] & 0x08))
goto check_middle;
/* Frame end */
if (in[8] & 0x80) {
ts = (struct timeval *)(frame->data
+ MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight));
do_gettimeofday(ts);
/* Get the actual frame size from the EOF header */
frame->rawwidth = ((int)(in[9]) + 1) * 8;
frame->rawheight = ((int)(in[10]) + 1) * 8;
PDEBUG(4, "Frame end, frame=%d, pnum=%d, w=%d, h=%d, recvd=%d",
ov->curframe, pnum, frame->rawwidth, frame->rawheight,
frame->bytes_recvd);
/* Validate the header data */
RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth);
RESTRICT_TO_RANGE(frame->rawheight, ov->minheight,
ov->maxheight);
/* Don't allow byte count to exceed buffer size */
RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw);
if (frame->scanstate == STATE_LINES) {
int nextf;
frame->grabstate = FRAME_DONE;
wake_up_interruptible(&frame->wq);
/* If next frame is ready or grabbing,
* point to it */
nextf = (ov->curframe + 1) % OV511_NUMFRAMES;
if (ov->frame[nextf].grabstate == FRAME_READY
|| ov->frame[nextf].grabstate == FRAME_GRABBING) {
ov->curframe = nextf;
ov->frame[nextf].scanstate = STATE_SCANNING;
} else {
if (frame->grabstate == FRAME_DONE) {
PDEBUG(4, "** Frame done **");
} else {
PDEBUG(4, "Frame not ready? state = %d",
ov->frame[nextf].grabstate);
}
ov->curframe = -1;
}
} else {
PDEBUG(5, "Frame done, but not scanning");
}
/* Image corruption caused by misplaced frame->segment = 0
* fixed by carlosf@conectiva.com.br
*/
} else {
/* Frame start */
PDEBUG(4, "Frame start, framenum = %d", ov->curframe);
/* Check to see if it's a snapshot frame */
/* FIXME?? Should the snapshot reset go here? Performance? */
if (in[8] & 0x02) {
frame->snapshot = 1;
PDEBUG(3, "snapshot detected");
}
frame->scanstate = STATE_LINES;
frame->bytes_recvd = 0;
frame->compressed = in[8] & 0x40;
}
check_middle:
/* Are we in a frame? */
if (frame->scanstate != STATE_LINES) {
PDEBUG(5, "Not in a frame; packet skipped");
return;
}
/* If frame start, skip header */
if (frame->bytes_recvd == 0)
offset = 9;
else
offset = 0;
num = n - offset - 1;
/* Dump all data exactly as received */
if (dumppix == 2) {
frame->bytes_recvd += n - 1;
if (frame->bytes_recvd <= max_raw)
memcpy(frame->rawdata + frame->bytes_recvd - (n - 1),
in, n - 1);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd - max_raw);
} else if (!frame->compressed && !remove_zeros) {
frame->bytes_recvd += num;
if (frame->bytes_recvd <= max_raw)
memcpy(frame->rawdata + frame->bytes_recvd - num,
in + offset, num);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd - max_raw);
} else { /* Remove all-zero FIFO lines (aligned 32-byte blocks) */
int b, read = 0, allzero, copied = 0;
if (offset) {
frame->bytes_recvd += 32 - offset; // Bytes out
memcpy(frame->rawdata, in + offset, 32 - offset);
read += 32;
}
while (read < n - 1) {
allzero = 1;
for (b = 0; b < 32; b++) {
if (in[read + b]) {
allzero = 0;
break;
}
}
if (allzero) {
/* Don't copy it */
} else {
if (frame->bytes_recvd + copied + 32 <= max_raw)
{
memcpy(frame->rawdata
+ frame->bytes_recvd + copied,
in + read, 32);
copied += 32;
} else {
PDEBUG(3, "Raw data buffer overrun!!");
}
}
read += 32;
}
frame->bytes_recvd += copied;
}
}
static inline void
ov518_move_data(struct usb_ov511 *ov, unsigned char *in, int n)
{
int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight);
struct ov511_frame *frame = &ov->frame[ov->curframe];
struct timeval *ts;
/* Don't copy the packet number byte */
if (ov->packet_numbering)
--n;
/* A false positive here is likely, until OVT gives me
* the definitive SOF/EOF format */
if ((!(in[0] | in[1] | in[2] | in[3] | in[5])) && in[6]) {
if (printph) {
info("ph: %2x %2x %2x %2x %2x %2x %2x %2x", in[0],
in[1], in[2], in[3], in[4], in[5], in[6], in[7]);
}
if (frame->scanstate == STATE_LINES) {
PDEBUG(4, "Detected frame end/start");
goto eof;
} else { //scanstate == STATE_SCANNING
/* Frame start */
PDEBUG(4, "Frame start, framenum = %d", ov->curframe);
goto sof;
}
} else {
goto check_middle;
}
eof:
ts = (struct timeval *)(frame->data
+ MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight));
do_gettimeofday(ts);
PDEBUG(4, "Frame end, curframe = %d, hw=%d, vw=%d, recvd=%d",
ov->curframe,
(int)(in[9]), (int)(in[10]), frame->bytes_recvd);
// FIXME: Since we don't know the header formats yet,
// there is no way to know what the actual image size is
frame->rawwidth = frame->width;
frame->rawheight = frame->height;
/* Validate the header data */
RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth);
RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, ov->maxheight);
/* Don't allow byte count to exceed buffer size */
RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw);
if (frame->scanstate == STATE_LINES) {
int nextf;
frame->grabstate = FRAME_DONE;
wake_up_interruptible(&frame->wq);
/* If next frame is ready or grabbing,
* point to it */
nextf = (ov->curframe + 1) % OV511_NUMFRAMES;
if (ov->frame[nextf].grabstate == FRAME_READY
|| ov->frame[nextf].grabstate == FRAME_GRABBING) {
ov->curframe = nextf;
ov->frame[nextf].scanstate = STATE_SCANNING;
frame = &ov->frame[nextf];
} else {
if (frame->grabstate == FRAME_DONE) {
PDEBUG(4, "** Frame done **");
} else {
PDEBUG(4, "Frame not ready? state = %d",
ov->frame[nextf].grabstate);
}
ov->curframe = -1;
PDEBUG(4, "SOF dropped (no active frame)");
return; /* Nowhere to store this frame */
}
}
sof:
PDEBUG(4, "Starting capture on frame %d", frame->framenum);
// Snapshot not reverse-engineered yet.
#if 0
/* Check to see if it's a snapshot frame */
/* FIXME?? Should the snapshot reset go here? Performance? */
if (in[8] & 0x02) {
frame->snapshot = 1;
PDEBUG(3, "snapshot detected");
}
#endif
frame->scanstate = STATE_LINES;
frame->bytes_recvd = 0;
frame->compressed = 1;
check_middle:
/* Are we in a frame? */
if (frame->scanstate != STATE_LINES) {
PDEBUG(4, "scanstate: no SOF yet");
return;
}
/* Dump all data exactly as received */
if (dumppix == 2) {
frame->bytes_recvd += n;
if (frame->bytes_recvd <= max_raw)
memcpy(frame->rawdata + frame->bytes_recvd - n, in, n);
else
PDEBUG(3, "Raw data buffer overrun!! (%d)",
frame->bytes_recvd - max_raw);
} else {
/* All incoming data are divided into 8-byte segments. If the
* segment contains all zero bytes, it must be skipped. These
* zero-segments allow the OV518 to mainain a constant data rate
* regardless of the effectiveness of the compression. Segments
* are aligned relative to the beginning of each isochronous
* packet. The first segment in each image is a header (the
* decompressor skips it later).
*/
int b, read = 0, allzero, copied = 0;
while (read < n) {
allzero = 1;
for (b = 0; b < 8; b++) {
if (in[read + b]) {
allzero = 0;
break;
}
}
if (allzero) {
/* Don't copy it */
} else {
if (frame->bytes_recvd + copied + 8 <= max_raw)
{
memcpy(frame->rawdata
+ frame->bytes_recvd + copied,
in + read, 8);
copied += 8;
} else {
PDEBUG(3, "Raw data buffer overrun!!");
}
}
read += 8;
}
frame->bytes_recvd += copied;
}
}
static void
ov51x_isoc_irq(struct urb *urb)
{
int i;
struct usb_ov511 *ov;
struct ov511_sbuf *sbuf;
if (!urb->context) {
PDEBUG(4, "no context");
return;
}
sbuf = urb->context;
ov = sbuf->ov;
if (!ov || !ov->dev || !ov->user) {
PDEBUG(4, "no device, or not open");
return;
}
if (!ov->streaming) {
PDEBUG(4, "hmmm... not streaming, but got interrupt");
return;
}
if (urb->status == -ENOENT || urb->status == -ECONNRESET) {
PDEBUG(4, "URB unlinked");
return;
}
if (urb->status != -EINPROGRESS && urb->status != 0) {
err("ERROR: urb->status=%d: %s", urb->status,
symbolic(urb_errlist, urb->status));
}
/* Copy the data received into our frame buffer */
PDEBUG(5, "sbuf[%d]: Moving %d packets", sbuf->n,
urb->number_of_packets);
for (i = 0; i < urb->number_of_packets; i++) {
/* Warning: Don't call *_move_data() if no frame active! */
if (ov->curframe >= 0) {
int n = urb->iso_frame_desc[i].actual_length;
int st = urb->iso_frame_desc[i].status;
unsigned char *cdata;
urb->iso_frame_desc[i].actual_length = 0;
urb->iso_frame_desc[i].status = 0;
cdata = urb->transfer_buffer
+ urb->iso_frame_desc[i].offset;
if (!n) {
PDEBUG(4, "Zero-length packet");
continue;
}
if (st)
PDEBUG(2, "data error: [%d] len=%d, status=%d",
i, n, st);
if (ov->bclass == BCL_OV511)
ov511_move_data(ov, cdata, n);
else if (ov->bclass == BCL_OV518)
ov518_move_data(ov, cdata, n);
else
err("Unknown bridge device (%d)", ov->bridge);
} else if (waitqueue_active(&ov->wq)) {
wake_up_interruptible(&ov->wq);
}
}
/* Resubmit this URB */
urb->dev = ov->dev;
if ((i = usb_submit_urb(urb, GFP_ATOMIC)) != 0)
err("usb_submit_urb() ret %d", i);
return;
}
/****************************************************************************
*
* Stream initialization and termination
*
***************************************************************************/
static int
ov51x_init_isoc(struct usb_ov511 *ov)
{
struct urb *urb;
int fx, err, n, size;
PDEBUG(3, "*** Initializing capture ***");
ov->curframe = -1;
if (ov->bridge == BRG_OV511) {
if (cams == 1)
size = 993;
else if (cams == 2)
size = 513;
else if (cams == 3 || cams == 4)
size = 257;
else {
err("\"cams\" parameter too high!");
return -1;
}
} else if (ov->bridge == BRG_OV511PLUS) {
if (cams == 1)
size = 961;
else if (cams == 2)
size = 513;
else if (cams == 3 || cams == 4)
size = 257;
else if (cams >= 5 && cams <= 8)
size = 129;
else if (cams >= 9 && cams <= 31)
size = 33;
else {
err("\"cams\" parameter too high!");
return -1;
}
} else if (ov->bclass == BCL_OV518) {
if (cams == 1)
size = 896;
else if (cams == 2)
size = 512;
else if (cams == 3 || cams == 4)
size = 256;
else if (cams >= 5 && cams <= 8)
size = 128;
else {
err("\"cams\" parameter too high!");
return -1;
}
} else {
err("invalid bridge type");
return -1;
}
// FIXME: OV518 is hardcoded to 15 FPS (alternate 5) for now
if (ov->bclass == BCL_OV518) {
if (packetsize == -1) {
ov518_set_packet_size(ov, 640);
} else {
info("Forcing packet size to %d", packetsize);
ov518_set_packet_size(ov, packetsize);
}
} else {
if (packetsize == -1) {
ov511_set_packet_size(ov, size);
} else {
info("Forcing packet size to %d", packetsize);
ov511_set_packet_size(ov, packetsize);
}
}
for (n = 0; n < OV511_NUMSBUF; n++) {
urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
if (!urb) {
err("init isoc: usb_alloc_urb ret. NULL");
return -ENOMEM;
}
ov->sbuf[n].urb = urb;
urb->dev = ov->dev;
urb->context = &ov->sbuf[n];
urb->pipe = usb_rcvisocpipe(ov->dev, OV511_ENDPOINT_ADDRESS);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = ov->sbuf[n].data;
urb->complete = ov51x_isoc_irq;
urb->number_of_packets = FRAMES_PER_DESC;
urb->transfer_buffer_length = ov->packet_size * FRAMES_PER_DESC;
urb->interval = 1;
for (fx = 0; fx < FRAMES_PER_DESC; fx++) {
urb->iso_frame_desc[fx].offset = ov->packet_size * fx;
urb->iso_frame_desc[fx].length = ov->packet_size;
}
}
ov->streaming = 1;
for (n = 0; n < OV511_NUMSBUF; n++) {
ov->sbuf[n].urb->dev = ov->dev;
err = usb_submit_urb(ov->sbuf[n].urb, GFP_KERNEL);
if (err) {
err("init isoc: usb_submit_urb(%d) ret %d", n, err);
return err;
}
}
return 0;
}
static void
ov51x_unlink_isoc(struct usb_ov511 *ov)
{
int n;
/* Unschedule all of the iso td's */
for (n = OV511_NUMSBUF - 1; n >= 0; n--) {
if (ov->sbuf[n].urb) {
usb_kill_urb(ov->sbuf[n].urb);
usb_free_urb(ov->sbuf[n].urb);
ov->sbuf[n].urb = NULL;
}
}
}
static void
ov51x_stop_isoc(struct usb_ov511 *ov)
{
if (!ov->streaming || !ov->dev)
return;
PDEBUG(3, "*** Stopping capture ***");
if (ov->bclass == BCL_OV518)
ov518_set_packet_size(ov, 0);
else
ov511_set_packet_size(ov, 0);
ov->streaming = 0;
ov51x_unlink_isoc(ov);
}
static int
ov51x_new_frame(struct usb_ov511 *ov, int framenum)
{
struct ov511_frame *frame;
int newnum;
PDEBUG(4, "ov->curframe = %d, framenum = %d", ov->curframe, framenum);
if (!ov->dev)
return -1;
/* If we're not grabbing a frame right now and the other frame is */
/* ready to be grabbed into, then use it instead */
if (ov->curframe == -1) {
newnum = (framenum - 1 + OV511_NUMFRAMES) % OV511_NUMFRAMES;
if (ov->frame[newnum].grabstate == FRAME_READY)
framenum = newnum;
} else
return 0;
frame = &ov->frame[framenum];
PDEBUG(4, "framenum = %d, width = %d, height = %d", framenum,
frame->width, frame->height);
frame->grabstate = FRAME_GRABBING;
frame->scanstate = STATE_SCANNING;
frame->snapshot = 0;
ov->curframe = framenum;
/* Make sure it's not too big */
if (frame->width > ov->maxwidth)
frame->width = ov->maxwidth;
frame->width &= ~7L; /* Multiple of 8 */
if (frame->height > ov->maxheight)
frame->height = ov->maxheight;
frame->height &= ~3L; /* Multiple of 4 */
return 0;
}
/****************************************************************************
*
* Buffer management
*
***************************************************************************/
/*
* - You must acquire buf_lock before entering this function.
* - Because this code will free any non-null pointer, you must be sure to null
* them if you explicitly free them somewhere else!
*/
static void
ov51x_do_dealloc(struct usb_ov511 *ov)
{
int i;
PDEBUG(4, "entered");
if (ov->fbuf) {
rvfree(ov->fbuf, OV511_NUMFRAMES
* MAX_DATA_SIZE(ov->maxwidth, ov->maxheight));
ov->fbuf = NULL;
}
vfree(ov->rawfbuf);
ov->rawfbuf = NULL;
vfree(ov->tempfbuf);
ov->tempfbuf = NULL;
for (i = 0; i < OV511_NUMSBUF; i++) {
kfree(ov->sbuf[i].data);
ov->sbuf[i].data = NULL;
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].data = NULL;
ov->frame[i].rawdata = NULL;
ov->frame[i].tempdata = NULL;
if (ov->frame[i].compbuf) {
free_page((unsigned long) ov->frame[i].compbuf);
ov->frame[i].compbuf = NULL;
}
}
PDEBUG(4, "buffer memory deallocated");
ov->buf_state = BUF_NOT_ALLOCATED;
PDEBUG(4, "leaving");
}
static int
ov51x_alloc(struct usb_ov511 *ov)
{
int i;
const int w = ov->maxwidth;
const int h = ov->maxheight;
const int data_bufsize = OV511_NUMFRAMES * MAX_DATA_SIZE(w, h);
const int raw_bufsize = OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h);
PDEBUG(4, "entered");
mutex_lock(&ov->buf_lock);
if (ov->buf_state == BUF_ALLOCATED)
goto out;
ov->fbuf = rvmalloc(data_bufsize);
if (!ov->fbuf)
goto error;
ov->rawfbuf = vmalloc(raw_bufsize);
if (!ov->rawfbuf)
goto error;
memset(ov->rawfbuf, 0, raw_bufsize);
ov->tempfbuf = vmalloc(raw_bufsize);
if (!ov->tempfbuf)
goto error;
memset(ov->tempfbuf, 0, raw_bufsize);
for (i = 0; i < OV511_NUMSBUF; i++) {
ov->sbuf[i].data = kmalloc(FRAMES_PER_DESC *
MAX_FRAME_SIZE_PER_DESC, GFP_KERNEL);
if (!ov->sbuf[i].data)
goto error;
PDEBUG(4, "sbuf[%d] @ %p", i, ov->sbuf[i].data);
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].data = ov->fbuf + i * MAX_DATA_SIZE(w, h);
ov->frame[i].rawdata = ov->rawfbuf
+ i * MAX_RAW_DATA_SIZE(w, h);
ov->frame[i].tempdata = ov->tempfbuf
+ i * MAX_RAW_DATA_SIZE(w, h);
ov->frame[i].compbuf =
(unsigned char *) __get_free_page(GFP_KERNEL);
if (!ov->frame[i].compbuf)
goto error;
PDEBUG(4, "frame[%d] @ %p", i, ov->frame[i].data);
}
ov->buf_state = BUF_ALLOCATED;
out:
mutex_unlock(&ov->buf_lock);
PDEBUG(4, "leaving");
return 0;
error:
ov51x_do_dealloc(ov);
mutex_unlock(&ov->buf_lock);
PDEBUG(4, "errored");
return -ENOMEM;
}
static void
ov51x_dealloc(struct usb_ov511 *ov)
{
PDEBUG(4, "entered");
mutex_lock(&ov->buf_lock);
ov51x_do_dealloc(ov);
mutex_unlock(&ov->buf_lock);
PDEBUG(4, "leaving");
}
/****************************************************************************
*
* V4L 1 API
*
***************************************************************************/
static int
ov51x_v4l1_open(struct inode *inode, struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct usb_ov511 *ov = video_get_drvdata(vdev);
int err, i;
PDEBUG(4, "opening");
mutex_lock(&ov->lock);
err = -EBUSY;
if (ov->user)
goto out;
ov->sub_flag = 0;
/* In case app doesn't set them... */
err = ov51x_set_default_params(ov);
if (err < 0)
goto out;
/* Make sure frames are reset */
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].grabstate = FRAME_UNUSED;
ov->frame[i].bytes_read = 0;
}
/* If compression is on, make sure now that a
* decompressor can be loaded */
if (ov->compress && !ov->decomp_ops) {
err = request_decompressor(ov);
if (err && !dumppix)
goto out;
}
err = ov51x_alloc(ov);
if (err < 0)
goto out;
err = ov51x_init_isoc(ov);
if (err) {
ov51x_dealloc(ov);
goto out;
}
ov->user++;
file->private_data = vdev;
if (ov->led_policy == LED_AUTO)
ov51x_led_control(ov, 1);
out:
mutex_unlock(&ov->lock);
return err;
}
static int
ov51x_v4l1_close(struct inode *inode, struct file *file)
{
struct video_device *vdev = file->private_data;
struct usb_ov511 *ov = video_get_drvdata(vdev);
PDEBUG(4, "ov511_close");
mutex_lock(&ov->lock);
ov->user--;
ov51x_stop_isoc(ov);
if (ov->led_policy == LED_AUTO)
ov51x_led_control(ov, 0);
if (ov->dev)
ov51x_dealloc(ov);
mutex_unlock(&ov->lock);
/* Device unplugged while open. Only a minimum of unregistration is done
* here; the disconnect callback already did the rest. */
if (!ov->dev) {
mutex_lock(&ov->cbuf_lock);
kfree(ov->cbuf);
ov->cbuf = NULL;
mutex_unlock(&ov->cbuf_lock);
ov51x_dealloc(ov);
kfree(ov);
ov = NULL;
}
file->private_data = NULL;
return 0;
}
/* Do not call this function directly! */
static int
ov51x_v4l1_ioctl_internal(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *vdev = file->private_data;
struct usb_ov511 *ov = video_get_drvdata(vdev);
PDEBUG(5, "IOCtl: 0x%X", cmd);
if (!ov->dev)
return -EIO;
switch (cmd) {
case VIDIOCGCAP:
{
struct video_capability *b = arg;
PDEBUG(4, "VIDIOCGCAP");
memset(b, 0, sizeof(struct video_capability));
sprintf(b->name, "%s USB Camera",
symbolic(brglist, ov->bridge));
b->type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE;
b->channels = ov->num_inputs;
b->audios = 0;
b->maxwidth = ov->maxwidth;
b->maxheight = ov->maxheight;
b->minwidth = ov->minwidth;
b->minheight = ov->minheight;
return 0;
}
case VIDIOCGCHAN:
{
struct video_channel *v = arg;
PDEBUG(4, "VIDIOCGCHAN");
if ((unsigned)(v->channel) >= ov->num_inputs) {
err("Invalid channel (%d)", v->channel);
return -EINVAL;
}
v->norm = ov->norm;
v->type = VIDEO_TYPE_CAMERA;
v->flags = 0;
// v->flags |= (ov->has_decoder) ? VIDEO_VC_NORM : 0;
v->tuners = 0;
decoder_get_input_name(ov, v->channel, v->name);
return 0;
}
case VIDIOCSCHAN:
{
struct video_channel *v = arg;
int err;
PDEBUG(4, "VIDIOCSCHAN");
/* Make sure it's not a camera */
if (!ov->has_decoder) {
if (v->channel == 0)
return 0;
else
return -EINVAL;
}
if (v->norm != VIDEO_MODE_PAL &&
v->norm != VIDEO_MODE_NTSC &&
v->norm != VIDEO_MODE_SECAM &&
v->norm != VIDEO_MODE_AUTO) {
err("Invalid norm (%d)", v->norm);
return -EINVAL;
}
if ((unsigned)(v->channel) >= ov->num_inputs) {
err("Invalid channel (%d)", v->channel);
return -EINVAL;
}
err = decoder_set_input(ov, v->channel);
if (err)
return err;
err = decoder_set_norm(ov, v->norm);
if (err)
return err;
return 0;
}
case VIDIOCGPICT:
{
struct video_picture *p = arg;
PDEBUG(4, "VIDIOCGPICT");
memset(p, 0, sizeof(struct video_picture));
if (sensor_get_picture(ov, p))
return -EIO;
/* Can we get these from frame[0]? -claudio? */
p->depth = ov->frame[0].depth;
p->palette = ov->frame[0].format;
return 0;
}
case VIDIOCSPICT:
{
struct video_picture *p = arg;
int i, rc;
PDEBUG(4, "VIDIOCSPICT");
if (!get_depth(p->palette))
return -EINVAL;
if (sensor_set_picture(ov, p))
return -EIO;
if (force_palette && p->palette != force_palette) {
info("Palette rejected (%s)",
symbolic(v4l1_plist, p->palette));
return -EINVAL;
}
// FIXME: Format should be independent of frames
if (p->palette != ov->frame[0].format) {
PDEBUG(4, "Detected format change");
rc = ov51x_wait_frames_inactive(ov);
if (rc)
return rc;
mode_init_regs(ov, ov->frame[0].width,
ov->frame[0].height, p->palette, ov->sub_flag);
}
PDEBUG(4, "Setting depth=%d, palette=%s",
p->depth, symbolic(v4l1_plist, p->palette));
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].depth = p->depth;
ov->frame[i].format = p->palette;
}
return 0;
}
case VIDIOCGCAPTURE:
{
int *vf = arg;
PDEBUG(4, "VIDIOCGCAPTURE");
ov->sub_flag = *vf;
return 0;
}
case VIDIOCSCAPTURE:
{
struct video_capture *vc = arg;
PDEBUG(4, "VIDIOCSCAPTURE");
if (vc->flags)
return -EINVAL;
if (vc->decimation)
return -EINVAL;
vc->x &= ~3L;
vc->y &= ~1L;
vc->y &= ~31L;
if (vc->width == 0)
vc->width = 32;
vc->height /= 16;
vc->height *= 16;
if (vc->height == 0)
vc->height = 16;
ov->subx = vc->x;
ov->suby = vc->y;
ov->subw = vc->width;
ov->subh = vc->height;
return 0;
}
case VIDIOCSWIN:
{
struct video_window *vw = arg;
int i, rc;
PDEBUG(4, "VIDIOCSWIN: %dx%d", vw->width, vw->height);
#if 0
if (vw->flags)
return -EINVAL;
if (vw->clipcount)
return -EINVAL;
if (vw->height != ov->maxheight)
return -EINVAL;
if (vw->width != ov->maxwidth)
return -EINVAL;
#endif
rc = ov51x_wait_frames_inactive(ov);
if (rc)
return rc;
rc = mode_init_regs(ov, vw->width, vw->height,
ov->frame[0].format, ov->sub_flag);
if (rc < 0)
return rc;
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].width = vw->width;
ov->frame[i].height = vw->height;
}
return 0;
}
case VIDIOCGWIN:
{
struct video_window *vw = arg;
memset(vw, 0, sizeof(struct video_window));
vw->x = 0; /* FIXME */
vw->y = 0;
vw->width = ov->frame[0].width;
vw->height = ov->frame[0].height;
vw->flags = 30;
PDEBUG(4, "VIDIOCGWIN: %dx%d", vw->width, vw->height);
return 0;
}
case VIDIOCGMBUF:
{
struct video_mbuf *vm = arg;
int i;
PDEBUG(4, "VIDIOCGMBUF");
memset(vm, 0, sizeof(struct video_mbuf));
vm->size = OV511_NUMFRAMES
* MAX_DATA_SIZE(ov->maxwidth, ov->maxheight);
vm->frames = OV511_NUMFRAMES;
vm->offsets[0] = 0;
for (i = 1; i < OV511_NUMFRAMES; i++) {
vm->offsets[i] = vm->offsets[i-1]
+ MAX_DATA_SIZE(ov->maxwidth, ov->maxheight);
}
return 0;
}
case VIDIOCMCAPTURE:
{
struct video_mmap *vm = arg;
int rc, depth;
unsigned int f = vm->frame;
PDEBUG(4, "VIDIOCMCAPTURE: frame: %d, %dx%d, %s", f, vm->width,
vm->height, symbolic(v4l1_plist, vm->format));
depth = get_depth(vm->format);
if (!depth) {
PDEBUG(2, "VIDIOCMCAPTURE: invalid format (%s)",
symbolic(v4l1_plist, vm->format));
return -EINVAL;
}
if (f >= OV511_NUMFRAMES) {
err("VIDIOCMCAPTURE: invalid frame (%d)", f);
return -EINVAL;
}
if (vm->width > ov->maxwidth
|| vm->height > ov->maxheight) {
err("VIDIOCMCAPTURE: requested dimensions too big");
return -EINVAL;
}
if (ov->frame[f].grabstate == FRAME_GRABBING) {
PDEBUG(4, "VIDIOCMCAPTURE: already grabbing");
return -EBUSY;
}
if (force_palette && (vm->format != force_palette)) {
PDEBUG(2, "palette rejected (%s)",
symbolic(v4l1_plist, vm->format));
return -EINVAL;
}
if ((ov->frame[f].width != vm->width) ||
(ov->frame[f].height != vm->height) ||
(ov->frame[f].format != vm->format) ||
(ov->frame[f].sub_flag != ov->sub_flag) ||
(ov->frame[f].depth != depth)) {
PDEBUG(4, "VIDIOCMCAPTURE: change in image parameters");
rc = ov51x_wait_frames_inactive(ov);
if (rc)
return rc;
rc = mode_init_regs(ov, vm->width, vm->height,
vm->format, ov->sub_flag);
#if 0
if (rc < 0) {
PDEBUG(1, "Got error while initializing regs ");
return ret;
}
#endif
ov->frame[f].width = vm->width;
ov->frame[f].height = vm->height;
ov->frame[f].format = vm->format;
ov->frame[f].sub_flag = ov->sub_flag;
ov->frame[f].depth = depth;
}
/* Mark it as ready */
ov->frame[f].grabstate = FRAME_READY;
PDEBUG(4, "VIDIOCMCAPTURE: renewing frame %d", f);
return ov51x_new_frame(ov, f);
}
case VIDIOCSYNC:
{
unsigned int fnum = *((unsigned int *) arg);
struct ov511_frame *frame;
int rc;
if (fnum >= OV511_NUMFRAMES) {
err("VIDIOCSYNC: invalid frame (%d)", fnum);
return -EINVAL;
}
frame = &ov->frame[fnum];
PDEBUG(4, "syncing to frame %d, grabstate = %d", fnum,
frame->grabstate);
switch (frame->grabstate) {
case FRAME_UNUSED:
return -EINVAL;
case FRAME_READY:
case FRAME_GRABBING:
case FRAME_ERROR:
redo:
if (!ov->dev)
return -EIO;
rc = wait_event_interruptible(frame->wq,
(frame->grabstate == FRAME_DONE)
|| (frame->grabstate == FRAME_ERROR));
if (rc)
return rc;
if (frame->grabstate == FRAME_ERROR) {
if ((rc = ov51x_new_frame(ov, fnum)) < 0)
return rc;
goto redo;
}
/* Fall through */
case FRAME_DONE:
if (ov->snap_enabled && !frame->snapshot) {
if ((rc = ov51x_new_frame(ov, fnum)) < 0)
return rc;
goto redo;
}
frame->grabstate = FRAME_UNUSED;
/* Reset the hardware snapshot button */
/* FIXME - Is this the best place for this? */
if ((ov->snap_enabled) && (frame->snapshot)) {
frame->snapshot = 0;
ov51x_clear_snapshot(ov);
}
/* Decompression, format conversion, etc... */
ov51x_postprocess(ov, frame);
break;
} /* end switch */
return 0;
}
case VIDIOCGFBUF:
{
struct video_buffer *vb = arg;
PDEBUG(4, "VIDIOCGFBUF");
memset(vb, 0, sizeof(struct video_buffer));
return 0;
}
case VIDIOCGUNIT:
{
struct video_unit *vu = arg;
PDEBUG(4, "VIDIOCGUNIT");
memset(vu, 0, sizeof(struct video_unit));
vu->video = ov->vdev->minor;
vu->vbi = VIDEO_NO_UNIT;
vu->radio = VIDEO_NO_UNIT;
vu->audio = VIDEO_NO_UNIT;
vu->teletext = VIDEO_NO_UNIT;
return 0;
}
case OV511IOC_WI2C:
{
struct ov511_i2c_struct *w = arg;
return i2c_w_slave(ov, w->slave, w->reg, w->value, w->mask);
}
case OV511IOC_RI2C:
{
struct ov511_i2c_struct *r = arg;
int rc;
rc = i2c_r_slave(ov, r->slave, r->reg);
if (rc < 0)
return rc;
r->value = rc;
return 0;
}
default:
PDEBUG(3, "Unsupported IOCtl: 0x%X", cmd);
return -ENOIOCTLCMD;
} /* end switch */
return 0;
}
static int
ov51x_v4l1_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct video_device *vdev = file->private_data;
struct usb_ov511 *ov = video_get_drvdata(vdev);
int rc;
if (mutex_lock_interruptible(&ov->lock))
return -EINTR;
rc = video_usercopy(inode, file, cmd, arg, ov51x_v4l1_ioctl_internal);
mutex_unlock(&ov->lock);
return rc;
}
static ssize_t
ov51x_v4l1_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos)
{
struct video_device *vdev = file->private_data;
int noblock = file->f_flags&O_NONBLOCK;
unsigned long count = cnt;
struct usb_ov511 *ov = video_get_drvdata(vdev);
int i, rc = 0, frmx = -1;
struct ov511_frame *frame;
if (mutex_lock_interruptible(&ov->lock))
return -EINTR;
PDEBUG(4, "%ld bytes, noblock=%d", count, noblock);
if (!vdev || !buf) {
rc = -EFAULT;
goto error;
}
if (!ov->dev) {
rc = -EIO;
goto error;
}
// FIXME: Only supports two frames
/* See if a frame is completed, then use it. */
if (ov->frame[0].grabstate >= FRAME_DONE) /* _DONE or _ERROR */
frmx = 0;
else if (ov->frame[1].grabstate >= FRAME_DONE)/* _DONE or _ERROR */
frmx = 1;
/* If nonblocking we return immediately */
if (noblock && (frmx == -1)) {
rc = -EAGAIN;
goto error;
}
/* If no FRAME_DONE, look for a FRAME_GRABBING state. */
/* See if a frame is in process (grabbing), then use it. */
if (frmx == -1) {
if (ov->frame[0].grabstate == FRAME_GRABBING)
frmx = 0;
else if (ov->frame[1].grabstate == FRAME_GRABBING)
frmx = 1;
}
/* If no frame is active, start one. */
if (frmx == -1) {
if ((rc = ov51x_new_frame(ov, frmx = 0))) {
err("read: ov51x_new_frame error");
goto error;
}
}
frame = &ov->frame[frmx];
restart:
if (!ov->dev) {
rc = -EIO;
goto error;
}
/* Wait while we're grabbing the image */
PDEBUG(4, "Waiting image grabbing");
rc = wait_event_interruptible(frame->wq,
(frame->grabstate == FRAME_DONE)
|| (frame->grabstate == FRAME_ERROR));
if (rc)
goto error;
PDEBUG(4, "Got image, frame->grabstate = %d", frame->grabstate);
PDEBUG(4, "bytes_recvd = %d", frame->bytes_recvd);
if (frame->grabstate == FRAME_ERROR) {
frame->bytes_read = 0;
err("** ick! ** Errored frame %d", ov->curframe);
if (ov51x_new_frame(ov, frmx)) {
err("read: ov51x_new_frame error");
goto error;
}
goto restart;
}
/* Repeat until we get a snapshot frame */
if (ov->snap_enabled)
PDEBUG(4, "Waiting snapshot frame");
if (ov->snap_enabled && !frame->snapshot) {
frame->bytes_read = 0;
if ((rc = ov51x_new_frame(ov, frmx))) {
err("read: ov51x_new_frame error");
goto error;
}
goto restart;
}
/* Clear the snapshot */
if (ov->snap_enabled && frame->snapshot) {
frame->snapshot = 0;
ov51x_clear_snapshot(ov);
}
/* Decompression, format conversion, etc... */
ov51x_postprocess(ov, frame);
PDEBUG(4, "frmx=%d, bytes_read=%ld, length=%ld", frmx,
frame->bytes_read,
get_frame_length(frame));
/* copy bytes to user space; we allow for partials reads */
// if ((count + frame->bytes_read)
// > get_frame_length((struct ov511_frame *)frame))
// count = frame->scanlength - frame->bytes_read;
/* FIXME - count hardwired to be one frame... */
count = get_frame_length(frame);
PDEBUG(4, "Copy to user space: %ld bytes", count);
if ((i = copy_to_user(buf, frame->data + frame->bytes_read, count))) {
PDEBUG(4, "Copy failed! %d bytes not copied", i);
rc = -EFAULT;
goto error;
}
frame->bytes_read += count;
PDEBUG(4, "{copy} count used=%ld, new bytes_read=%ld",
count, frame->bytes_read);
/* If all data have been read... */
if (frame->bytes_read
>= get_frame_length(frame)) {
frame->bytes_read = 0;
// FIXME: Only supports two frames
/* Mark it as available to be used again. */
ov->frame[frmx].grabstate = FRAME_UNUSED;
if ((rc = ov51x_new_frame(ov, !frmx))) {
err("ov51x_new_frame returned error");
goto error;
}
}
PDEBUG(4, "read finished, returning %ld (sweet)", count);
mutex_unlock(&ov->lock);
return count;
error:
mutex_unlock(&ov->lock);
return rc;
}
static int
ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma)
{
struct video_device *vdev = file->private_data;
unsigned long start = vma->vm_start;
unsigned long size = vma->vm_end - vma->vm_start;
struct usb_ov511 *ov = video_get_drvdata(vdev);
unsigned long page, pos;
if (ov->dev == NULL)
return -EIO;
PDEBUG(4, "mmap: %ld (%lX) bytes", size, size);
if (size > (((OV511_NUMFRAMES
* MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)
+ PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))))
return -EINVAL;
if (mutex_lock_interruptible(&ov->lock))
return -EINTR;
pos = (unsigned long)ov->fbuf;
while (size > 0) {
page = vmalloc_to_pfn((void *)pos);
if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
mutex_unlock(&ov->lock);
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
mutex_unlock(&ov->lock);
return 0;
}
static const struct file_operations ov511_fops = {
.owner = THIS_MODULE,
.open = ov51x_v4l1_open,
.release = ov51x_v4l1_close,
.read = ov51x_v4l1_read,
.mmap = ov51x_v4l1_mmap,
.ioctl = ov51x_v4l1_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.llseek = no_llseek,
};
static struct video_device vdev_template = {
.owner = THIS_MODULE,
.name = "OV511 USB Camera",
.type = VID_TYPE_CAPTURE,
.hardware = VID_HARDWARE_OV511,
.fops = &ov511_fops,
.release = video_device_release,
.minor = -1,
};
/****************************************************************************
*
* OV511 and sensor configuration
*
***************************************************************************/
/* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses
* the same register settings as the OV7610, since they are very similar.
*/
static int
ov7xx0_configure(struct usb_ov511 *ov)
{
int i, success;
int rc;
/* Lawrence Glaister <lg@jfm.bc.ca> reports:
*
* Register 0x0f in the 7610 has the following effects:
*
* 0x85 (AEC method 1): Best overall, good contrast range
* 0x45 (AEC method 2): Very overexposed
* 0xa5 (spec sheet default): Ok, but the black level is
* shifted resulting in loss of contrast
* 0x05 (old driver setting): very overexposed, too much
* contrast
*/
static struct ov511_regvals aRegvalsNorm7610[] = {
{ OV511_I2C_BUS, 0x10, 0xff },
{ OV511_I2C_BUS, 0x16, 0x06 },
{ OV511_I2C_BUS, 0x28, 0x24 },
{ OV511_I2C_BUS, 0x2b, 0xac },
{ OV511_I2C_BUS, 0x12, 0x00 },
{ OV511_I2C_BUS, 0x38, 0x81 },
{ OV511_I2C_BUS, 0x28, 0x24 }, /* 0c */
{ OV511_I2C_BUS, 0x0f, 0x85 }, /* lg's setting */
{ OV511_I2C_BUS, 0x15, 0x01 },
{ OV511_I2C_BUS, 0x20, 0x1c },
{ OV511_I2C_BUS, 0x23, 0x2a },
{ OV511_I2C_BUS, 0x24, 0x10 },
{ OV511_I2C_BUS, 0x25, 0x8a },
{ OV511_I2C_BUS, 0x26, 0xa2 },
{ OV511_I2C_BUS, 0x27, 0xc2 },
{ OV511_I2C_BUS, 0x2a, 0x04 },
{ OV511_I2C_BUS, 0x2c, 0xfe },
{ OV511_I2C_BUS, 0x2d, 0x93 },
{ OV511_I2C_BUS, 0x30, 0x71 },
{ OV511_I2C_BUS, 0x31, 0x60 },
{ OV511_I2C_BUS, 0x32, 0x26 },
{ OV511_I2C_BUS, 0x33, 0x20 },
{ OV511_I2C_BUS, 0x34, 0x48 },
{ OV511_I2C_BUS, 0x12, 0x24 },
{ OV511_I2C_BUS, 0x11, 0x01 },
{ OV511_I2C_BUS, 0x0c, 0x24 },
{ OV511_I2C_BUS, 0x0d, 0x24 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
static struct ov511_regvals aRegvalsNorm7620[] = {
{ OV511_I2C_BUS, 0x00, 0x00 },
{ OV511_I2C_BUS, 0x01, 0x80 },
{ OV511_I2C_BUS, 0x02, 0x80 },
{ OV511_I2C_BUS, 0x03, 0xc0 },
{ OV511_I2C_BUS, 0x06, 0x60 },
{ OV511_I2C_BUS, 0x07, 0x00 },
{ OV511_I2C_BUS, 0x0c, 0x24 },
{ OV511_I2C_BUS, 0x0c, 0x24 },
{ OV511_I2C_BUS, 0x0d, 0x24 },
{ OV511_I2C_BUS, 0x11, 0x01 },
{ OV511_I2C_BUS, 0x12, 0x24 },
{ OV511_I2C_BUS, 0x13, 0x01 },
{ OV511_I2C_BUS, 0x14, 0x84 },
{ OV511_I2C_BUS, 0x15, 0x01 },
{ OV511_I2C_BUS, 0x16, 0x03 },
{ OV511_I2C_BUS, 0x17, 0x2f },
{ OV511_I2C_BUS, 0x18, 0xcf },
{ OV511_I2C_BUS, 0x19, 0x06 },
{ OV511_I2C_BUS, 0x1a, 0xf5 },
{ OV511_I2C_BUS, 0x1b, 0x00 },
{ OV511_I2C_BUS, 0x20, 0x18 },
{ OV511_I2C_BUS, 0x21, 0x80 },
{ OV511_I2C_BUS, 0x22, 0x80 },
{ OV511_I2C_BUS, 0x23, 0x00 },
{ OV511_I2C_BUS, 0x26, 0xa2 },
{ OV511_I2C_BUS, 0x27, 0xea },
{ OV511_I2C_BUS, 0x28, 0x20 },
{ OV511_I2C_BUS, 0x29, 0x00 },
{ OV511_I2C_BUS, 0x2a, 0x10 },
{ OV511_I2C_BUS, 0x2b, 0x00 },
{ OV511_I2C_BUS, 0x2c, 0x88 },
{ OV511_I2C_BUS, 0x2d, 0x91 },
{ OV511_I2C_BUS, 0x2e, 0x80 },
{ OV511_I2C_BUS, 0x2f, 0x44 },
{ OV511_I2C_BUS, 0x60, 0x27 },
{ OV511_I2C_BUS, 0x61, 0x02 },
{ OV511_I2C_BUS, 0x62, 0x5f },
{ OV511_I2C_BUS, 0x63, 0xd5 },
{ OV511_I2C_BUS, 0x64, 0x57 },
{ OV511_I2C_BUS, 0x65, 0x83 },
{ OV511_I2C_BUS, 0x66, 0x55 },
{ OV511_I2C_BUS, 0x67, 0x92 },
{ OV511_I2C_BUS, 0x68, 0xcf },
{ OV511_I2C_BUS, 0x69, 0x76 },
{ OV511_I2C_BUS, 0x6a, 0x22 },
{ OV511_I2C_BUS, 0x6b, 0x00 },
{ OV511_I2C_BUS, 0x6c, 0x02 },
{ OV511_I2C_BUS, 0x6d, 0x44 },
{ OV511_I2C_BUS, 0x6e, 0x80 },
{ OV511_I2C_BUS, 0x6f, 0x1d },
{ OV511_I2C_BUS, 0x70, 0x8b },
{ OV511_I2C_BUS, 0x71, 0x00 },
{ OV511_I2C_BUS, 0x72, 0x14 },
{ OV511_I2C_BUS, 0x73, 0x54 },
{ OV511_I2C_BUS, 0x74, 0x00 },
{ OV511_I2C_BUS, 0x75, 0x8e },
{ OV511_I2C_BUS, 0x76, 0x00 },
{ OV511_I2C_BUS, 0x77, 0xff },
{ OV511_I2C_BUS, 0x78, 0x80 },
{ OV511_I2C_BUS, 0x79, 0x80 },
{ OV511_I2C_BUS, 0x7a, 0x80 },
{ OV511_I2C_BUS, 0x7b, 0xe2 },
{ OV511_I2C_BUS, 0x7c, 0x00 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
PDEBUG(4, "starting configuration");
/* This looks redundant, but is necessary for WebCam 3 */
ov->primary_i2c_slave = OV7xx0_SID;
if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
return -1;
if (init_ov_sensor(ov) >= 0) {
PDEBUG(1, "OV7xx0 sensor initalized (method 1)");
} else {
/* Reset the 76xx */
if (i2c_w(ov, 0x12, 0x80) < 0)
return -1;
/* Wait for it to initialize */
msleep(150);
i = 0;
success = 0;
while (i <= i2c_detect_tries) {
if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) &&
(i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) {
success = 1;
break;
} else {
i++;
}
}
// Was (i == i2c_detect_tries) previously. This obviously used to always report
// success. Whether anyone actually depended on that bug is unknown
if ((i >= i2c_detect_tries) && (success == 0)) {
err("Failed to read sensor ID. You might not have an");
err("OV7610/20, or it may be not responding. Report");
err("this to " EMAIL);
err("This is only a warning. You can attempt to use");
err("your camera anyway");
// Only issue a warning for now
// return -1;
} else {
PDEBUG(1, "OV7xx0 initialized (method 2, %dx)", i+1);
}
}
/* Detect sensor (sub)type */
rc = i2c_r(ov, OV7610_REG_COM_I);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if ((rc & 3) == 3) {
info("Sensor is an OV7610");
ov->sensor = SEN_OV7610;
} else if ((rc & 3) == 1) {
/* I don't know what's different about the 76BE yet. */
if (i2c_r(ov, 0x15) & 1)
info("Sensor is an OV7620AE");
else
info("Sensor is an OV76BE");
/* OV511+ will return all zero isoc data unless we
* configure the sensor as a 7620. Someone needs to
* find the exact reg. setting that causes this. */
if (ov->bridge == BRG_OV511PLUS) {
info("Enabling 511+/7620AE workaround");
ov->sensor = SEN_OV7620;
} else {
ov->sensor = SEN_OV76BE;
}
} else if ((rc & 3) == 0) {
info("Sensor is an OV7620");
ov->sensor = SEN_OV7620;
} else {
err("Unknown image sensor version: %d", rc & 3);
return -1;
}
if (ov->sensor == SEN_OV7620) {
PDEBUG(4, "Writing 7620 registers");
if (write_regvals(ov, aRegvalsNorm7620))
return -1;
} else {
PDEBUG(4, "Writing 7610 registers");
if (write_regvals(ov, aRegvalsNorm7610))
return -1;
}
/* Set sensor-specific vars */
ov->maxwidth = 640;
ov->maxheight = 480;
ov->minwidth = 64;
ov->minheight = 48;
// FIXME: These do not match the actual settings yet
ov->brightness = 0x80 << 8;
ov->contrast = 0x80 << 8;
ov->colour = 0x80 << 8;
ov->hue = 0x80 << 8;
return 0;
}
/* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */
static int
ov6xx0_configure(struct usb_ov511 *ov)
{
int rc;
static struct ov511_regvals aRegvalsNorm6x20[] = {
{ OV511_I2C_BUS, 0x12, 0x80 }, /* reset */
{ OV511_I2C_BUS, 0x11, 0x01 },
{ OV511_I2C_BUS, 0x03, 0x60 },
{ OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */
{ OV511_I2C_BUS, 0x07, 0xa8 },
/* The ratio of 0x0c and 0x0d controls the white point */
{ OV511_I2C_BUS, 0x0c, 0x24 },
{ OV511_I2C_BUS, 0x0d, 0x24 },
{ OV511_I2C_BUS, 0x0f, 0x15 }, /* COMS */
{ OV511_I2C_BUS, 0x10, 0x75 }, /* AEC Exposure time */
{ OV511_I2C_BUS, 0x12, 0x24 }, /* Enable AGC */
{ OV511_I2C_BUS, 0x14, 0x04 },
/* 0x16: 0x06 helps frame stability with moving objects */
{ OV511_I2C_BUS, 0x16, 0x06 },
// { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */
{ OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */
/* 0x28: 0x05 Selects RGB format if RGB on */
{ OV511_I2C_BUS, 0x28, 0x05 },
{ OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */
// { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */
{ OV511_I2C_BUS, 0x2d, 0x99 },
{ OV511_I2C_BUS, 0x33, 0xa0 }, /* Color Processing Parameter */
{ OV511_I2C_BUS, 0x34, 0xd2 }, /* Max A/D range */
{ OV511_I2C_BUS, 0x38, 0x8b },
{ OV511_I2C_BUS, 0x39, 0x40 },
{ OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */
{ OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */
{ OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */
{ OV511_I2C_BUS, 0x3d, 0x80 },
/* These next two registers (0x4a, 0x4b) are undocumented. They
* control the color balance */
{ OV511_I2C_BUS, 0x4a, 0x80 },
{ OV511_I2C_BUS, 0x4b, 0x80 },
{ OV511_I2C_BUS, 0x4d, 0xd2 }, /* This reduces noise a bit */
{ OV511_I2C_BUS, 0x4e, 0xc1 },
{ OV511_I2C_BUS, 0x4f, 0x04 },
// Do 50-53 have any effect?
// Toggle 0x12[2] off and on here?
{ OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */
};
static struct ov511_regvals aRegvalsNorm6x30[] = {
/*OK*/ { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */
{ OV511_I2C_BUS, 0x11, 0x00 },
/*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 },
// /*04?*/ { OV511_I2C_BUS, 0x14, 0x80 },
{ OV511_I2C_BUS, 0x16, 0x03 },
// /*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 */
{ 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 */
// /*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 */
{ OV511_I2C_BUS, 0x3d, 0x80 },
// /*A*/ { OV511_I2C_BUS, 0x3f, 0x0e },
/* 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 },
{ OV511_I2C_BUS, 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */
/*c1?*/ { OV511_I2C_BUS, 0x4e, 0x40 },
/* UV average mode, color killer: strongest */
{ OV511_I2C_BUS, 0x4f, 0x07 },
{ OV511_I2C_BUS, 0x54, 0x23 }, /* Max AGC gain: 18dB */
{ OV511_I2C_BUS, 0x57, 0x81 }, /* (default) */
{ OV511_I2C_BUS, 0x59, 0x01 }, /* AGC dark current comp: +1 */
{ OV511_I2C_BUS, 0x5a, 0x2c }, /* (undocumented) */
{ OV511_I2C_BUS, 0x5b, 0x0f }, /* AWB chrominance levels */
// { OV511_I2C_BUS, 0x5c, 0x10 },
{ OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */
};
PDEBUG(4, "starting sensor configuration");
if (init_ov_sensor(ov) < 0) {
err("Failed to read sensor ID. You might not have an OV6xx0,");
err("or it may be not responding. Report this to " EMAIL);
return -1;
} else {
PDEBUG(1, "OV6xx0 sensor detected");
}
/* Detect sensor (sub)type */
rc = i2c_r(ov, OV7610_REG_COM_I);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
}
if ((rc & 3) == 0) {
ov->sensor = SEN_OV6630;
info("Sensor is an OV6630");
} else if ((rc & 3) == 1) {
ov->sensor = SEN_OV6620;
info("Sensor is an OV6620");
} else if ((rc & 3) == 2) {
ov->sensor = SEN_OV6630;
info("Sensor is an OV6630AE");
} else if ((rc & 3) == 3) {
ov->sensor = SEN_OV6630;
info("Sensor is an OV6630AF");
}
/* Set sensor-specific vars */
ov->maxwidth = 352;
ov->maxheight = 288;
ov->minwidth = 64;
ov->minheight = 48;
// FIXME: These do not match the actual settings yet
ov->brightness = 0x80 << 8;
ov->contrast = 0x80 << 8;
ov->colour = 0x80 << 8;
ov->hue = 0x80 << 8;
if (ov->sensor == SEN_OV6620) {
PDEBUG(4, "Writing 6x20 registers");
if (write_regvals(ov, aRegvalsNorm6x20))
return -1;
} else {
PDEBUG(4, "Writing 6x30 registers");
if (write_regvals(ov, aRegvalsNorm6x30))
return -1;
}
return 0;
}
/* This initializes the KS0127 and KS0127B video decoders. */
static int
ks0127_configure(struct usb_ov511 *ov)
{
int rc;
// FIXME: I don't know how to sync or reset it yet
#if 0
if (ov51x_init_ks_sensor(ov) < 0) {
err("Failed to initialize the KS0127");
return -1;
} else {
PDEBUG(1, "KS012x(B) sensor detected");
}
#endif
/* Detect decoder subtype */
rc = i2c_r(ov, 0x00);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if (rc & 0x08) {
rc = i2c_r(ov, 0x3d);
if (rc < 0) {
err("Error detecting sensor type");
return -1;
} else if ((rc & 0x0f) == 0) {
info("Sensor is a KS0127");
ov->sensor = SEN_KS0127;
} else if ((rc & 0x0f) == 9) {
info("Sensor is a KS0127B Rev. A");
ov->sensor = SEN_KS0127B;
}
} else {
err("Error: Sensor is an unsupported KS0122");
return -1;
}
/* Set sensor-specific vars */
ov->maxwidth = 640;
ov->maxheight = 480;
ov->minwidth = 64;
ov->minheight = 48;
// FIXME: These do not match the actual settings yet
ov->brightness = 0x80 << 8;
ov->contrast = 0x80 << 8;
ov->colour = 0x80 << 8;
ov->hue = 0x80 << 8;
/* This device is not supported yet. Bail out now... */
err("This sensor is not supported yet.");
return -1;
return 0;
}
/* This initializes the SAA7111A video decoder. */
static int
saa7111a_configure(struct usb_ov511 *ov)
{
int rc;
/* Since there is no register reset command, all registers must be
* written, otherwise gives erratic results */
static struct ov511_regvals aRegvalsNormSAA7111A[] = {
{ OV511_I2C_BUS, 0x06, 0xce },
{ OV511_I2C_BUS, 0x07, 0x00 },
{ OV511_I2C_BUS, 0x10, 0x44 }, /* YUV422, 240/286 lines */
{ OV511_I2C_BUS, 0x0e, 0x01 }, /* NTSC M or PAL BGHI */
{ OV511_I2C_BUS, 0x00, 0x00 },
{ OV511_I2C_BUS, 0x01, 0x00 },
{ OV511_I2C_BUS, 0x03, 0x23 },
{ OV511_I2C_BUS, 0x04, 0x00 },
{ OV511_I2C_BUS, 0x05, 0x00 },
{ OV511_I2C_BUS, 0x08, 0xc8 }, /* Auto field freq */
{ OV511_I2C_BUS, 0x09, 0x01 }, /* Chrom. trap off, APER=0.25 */
{ OV511_I2C_BUS, 0x0a, 0x80 }, /* BRIG=128 */
{ OV511_I2C_BUS, 0x0b, 0x40 }, /* CONT=1.0 */
{ OV511_I2C_BUS, 0x0c, 0x40 }, /* SATN=1.0 */
{ OV511_I2C_BUS, 0x0d, 0x00 }, /* HUE=0 */
{ OV511_I2C_BUS, 0x0f, 0x00 },
{ OV511_I2C_BUS, 0x11, 0x0c },
{ OV511_I2C_BUS, 0x12, 0x00 },
{ OV511_I2C_BUS, 0x13, 0x00 },
{ OV511_I2C_BUS, 0x14, 0x00 },
{ OV511_I2C_BUS, 0x15, 0x00 },
{ OV511_I2C_BUS, 0x16, 0x00 },
{ OV511_I2C_BUS, 0x17, 0x00 },
{ OV511_I2C_BUS, 0x02, 0xc0 }, /* Composite input 0 */
{ OV511_DONE_BUS, 0x0, 0x00 },
};
// FIXME: I don't know how to sync or reset it yet
#if 0
if (ov51x_init_saa_sensor(ov) < 0) {
err("Failed to initialize the SAA7111A");
return -1;
} else {
PDEBUG(1, "SAA7111A sensor detected");
}
#endif
/* 640x480 not supported with PAL */
if (ov->pal) {
ov->maxwidth = 320;
ov->maxheight = 240; /* Even field only */
} else {
ov->maxwidth = 640;
ov->maxheight = 480; /* Even/Odd fields */
}
ov->minwidth = 320;
ov->minheight = 240; /* Even field only */
ov->has_decoder = 1;
ov->num_inputs = 8;
ov->norm = VIDEO_MODE_AUTO;
ov->stop_during_set = 0; /* Decoder guarantees stable image */
/* Decoder doesn't change these values, so we use these instead of
* acutally reading the registers (which doesn't work) */
ov->brightness = 0x80 << 8;
ov->contrast = 0x40 << 9;
ov->colour = 0x40 << 9;
ov->hue = 32768;
PDEBUG(4, "Writing SAA7111A registers");
if (write_regvals(ov, aRegvalsNormSAA7111A))
return -1;
/* Detect version of decoder. This must be done after writing the
* initial regs or the decoder will lock up. */
rc = i2c_r(ov, 0x00);
if (rc < 0) {
err("Error detecting sensor version");
return -1;
} else {
info("Sensor is an SAA7111A (version 0x%x)", rc);
ov->sensor = SEN_SAA7111A;
}
// FIXME: Fix this for OV518(+)
/* Latch to negative edge of clock. Otherwise, we get incorrect
* colors and jitter in the digital signal. */
if (ov->bclass == BCL_OV511)
reg_w(ov, 0x11, 0x00);
else
warn("SAA7111A not yet supported with OV518/OV518+");
return 0;
}
/* This initializes the OV511/OV511+ and the sensor */
static int
ov511_configure(struct usb_ov511 *ov)
{
static struct ov511_regvals aRegvalsInit511[] = {
{ OV511_REG_BUS, R51x_SYS_RESET, 0x7f },
{ OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
{ OV511_REG_BUS, R51x_SYS_RESET, 0x7f },
{ OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
{ OV511_REG_BUS, R51x_SYS_RESET, 0x3f },
{ OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
{ OV511_REG_BUS, R51x_SYS_RESET, 0x3d },
{ OV511_DONE_BUS, 0x0, 0x00},
};
static struct ov511_regvals aRegvalsNorm511[] = {
{ OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0x01 },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x02 },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
{ OV511_REG_BUS, R511_FIFO_OPTS, 0x1f },
{ OV511_REG_BUS, R511_COMP_EN, 0x00 },
{ OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
static struct ov511_regvals aRegvalsNorm511Plus[] = {
{ OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0xff },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x02 },
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
{ OV511_REG_BUS, R511_FIFO_OPTS, 0xff },
{ OV511_REG_BUS, R511_COMP_EN, 0x00 },
{ OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
PDEBUG(4, "");
ov->customid = reg_r(ov, R511_SYS_CUST_ID);
if (ov->customid < 0) {
err("Unable to read camera bridge registers");
goto error;
}
PDEBUG (1, "CustomID = %d", ov->customid);
ov->desc = symbolic(camlist, ov->customid);
info("model: %s", ov->desc);
if (0 == strcmp(ov->desc, NOT_DEFINED_STR)) {
err("Camera type (%d) not recognized", ov->customid);
err("Please notify " EMAIL " of the name,");
err("manufacturer, model, and this number of your camera.");
err("Also include the output of the detection process.");
}
if (ov->customid == 70) /* USB Life TV (PAL/SECAM) */
ov->pal = 1;
if (write_regvals(ov, aRegvalsInit511))
goto error;
if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO)
ov51x_led_control(ov, 0);
/* The OV511+ has undocumented bits in the flow control register.
* Setting it to 0xff fixes the corruption with moving objects. */
if (ov->bridge == BRG_OV511) {
if (write_regvals(ov, aRegvalsNorm511))
goto error;
} else if (ov->bridge == BRG_OV511PLUS) {
if (write_regvals(ov, aRegvalsNorm511Plus))
goto error;
} else {
err("Invalid bridge");
}
if (ov511_init_compression(ov))
goto error;
ov->packet_numbering = 1;
ov511_set_packet_size(ov, 0);
ov->snap_enabled = snapshot;
/* Test for 7xx0 */
PDEBUG(3, "Testing for 0V7xx0");
ov->primary_i2c_slave = OV7xx0_SID;
if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
goto error;
if (i2c_w(ov, 0x12, 0x80) < 0) {
/* Test for 6xx0 */
PDEBUG(3, "Testing for 0V6xx0");
ov->primary_i2c_slave = OV6xx0_SID;
if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0)
goto error;
if (i2c_w(ov, 0x12, 0x80) < 0) {
/* Test for 8xx0 */
PDEBUG(3, "Testing for 0V8xx0");
ov->primary_i2c_slave = OV8xx0_SID;
if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0)
goto error;
if (i2c_w(ov, 0x12, 0x80) < 0) {
/* Test for SAA7111A */
PDEBUG(3, "Testing for SAA7111A");
ov->primary_i2c_slave = SAA7111A_SID;
if (ov51x_set_slave_ids(ov, SAA7111A_SID) < 0)
goto error;
if (i2c_w(ov, 0x0d, 0x00) < 0) {
/* Test for KS0127 */
PDEBUG(3, "Testing for KS0127");
ov->primary_i2c_slave = KS0127_SID;
if (ov51x_set_slave_ids(ov, KS0127_SID) < 0)
goto error;
if (i2c_w(ov, 0x10, 0x00) < 0) {
err("Can't determine sensor slave IDs");
goto error;
} else {
if (ks0127_configure(ov) < 0) {
err("Failed to configure KS0127");
goto error;
}
}
} else {
if (saa7111a_configure(ov) < 0) {
err("Failed to configure SAA7111A");
goto error;
}
}
} else {
err("Detected unsupported OV8xx0 sensor");
goto error;
}
} else {
if (ov6xx0_configure(ov) < 0) {
err("Failed to configure OV6xx0");
goto error;
}
}
} else {
if (ov7xx0_configure(ov) < 0) {
err("Failed to configure OV7xx0");
goto error;
}
}
return 0;
error:
err("OV511 Config failed");
return -EBUSY;
}
/* This initializes the OV518/OV518+ and the sensor */
static int
ov518_configure(struct usb_ov511 *ov)
{
/* For 518 and 518+ */
static struct ov511_regvals aRegvalsInit518[] = {
{ OV511_REG_BUS, R51x_SYS_RESET, 0x40 },
{ OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
{ OV511_REG_BUS, R51x_SYS_RESET, 0x3e },
{ OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
{ OV511_REG_BUS, R51x_SYS_RESET, 0x00 },
{ OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
{ OV511_REG_BUS, 0x46, 0x00 },
{ OV511_REG_BUS, 0x5d, 0x03 },
{ OV511_DONE_BUS, 0x0, 0x00},
};
static struct ov511_regvals aRegvalsNorm518[] = {
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */
{ OV511_REG_BUS, 0x31, 0x0f },
{ OV511_REG_BUS, 0x5d, 0x03 },
{ OV511_REG_BUS, 0x24, 0x9f },
{ OV511_REG_BUS, 0x25, 0x90 },
{ OV511_REG_BUS, 0x20, 0x00 },
{ OV511_REG_BUS, 0x51, 0x04 },
{ OV511_REG_BUS, 0x71, 0x19 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
static struct ov511_regvals aRegvalsNorm518Plus[] = {
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */
{ OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */
{ OV511_REG_BUS, 0x31, 0x0f },
{ OV511_REG_BUS, 0x5d, 0x03 },
{ OV511_REG_BUS, 0x24, 0x9f },
{ OV511_REG_BUS, 0x25, 0x90 },
{ OV511_REG_BUS, 0x20, 0x60 },
{ OV511_REG_BUS, 0x51, 0x02 },
{ OV511_REG_BUS, 0x71, 0x19 },
{ OV511_REG_BUS, 0x40, 0xff },
{ OV511_REG_BUS, 0x41, 0x42 },
{ OV511_REG_BUS, 0x46, 0x00 },
{ OV511_REG_BUS, 0x33, 0x04 },
{ OV511_REG_BUS, 0x21, 0x19 },
{ OV511_REG_BUS, 0x3f, 0x10 },
{ OV511_DONE_BUS, 0x0, 0x00 },
};
PDEBUG(4, "");
/* First 5 bits of custom ID reg are a revision ID on OV518 */
info("Device revision %d", 0x1F & reg_r(ov, R511_SYS_CUST_ID));
/* Give it the default description */
ov->desc = symbolic(camlist, 0);
if (write_regvals(ov, aRegvalsInit518))
goto error;
/* Set LED GPIO pin to output mode */
if (reg_w_mask(ov, 0x57, 0x00, 0x02) < 0)
goto error;
/* LED is off by default with OV518; have to explicitly turn it on */
if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO)
ov51x_led_control(ov, 0);
else
ov51x_led_control(ov, 1);
/* Don't require compression if dumppix is enabled; otherwise it's
* required. OV518 has no uncompressed mode, to save RAM. */
if (!dumppix && !ov->compress) {
ov->compress = 1;
warn("Compression required with OV518...enabling");
}
if (ov->bridge == BRG_OV518) {
if (write_regvals(ov, aRegvalsNorm518))
goto error;
} else if (ov->bridge == BRG_OV518PLUS) {
if (write_regvals(ov, aRegvalsNorm518Plus))
goto error;
} else {
err("Invalid bridge");
}
if (reg_w(ov, 0x2f, 0x80) < 0)
goto error;
if (ov518_init_compression(ov))
goto error;
if (ov->bridge == BRG_OV518)
{
struct usb_interface *ifp;
struct usb_host_interface *alt;
__u16 mxps = 0;
ifp = usb_ifnum_to_if(ov->dev, 0);
if (ifp) {
alt = usb_altnum_to_altsetting(ifp, 7);
if (alt)
mxps = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
}
/* Some OV518s have packet numbering by default, some don't */
if (mxps == 897)
ov->packet_numbering = 1;
else
ov->packet_numbering = 0;
} else {
/* OV518+ has packet numbering turned on by default */
ov->packet_numbering = 1;
}
ov518_set_packet_size(ov, 0);
ov->snap_enabled = snapshot;
/* Test for 76xx */
ov->primary_i2c_slave = OV7xx0_SID;
if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
goto error;
/* The OV518 must be more aggressive about sensor detection since
* I2C write will never fail if the sensor is not present. We have
* to try to initialize the sensor to detect its presence */
if (init_ov_sensor(ov) < 0) {
/* Test for 6xx0 */
ov->primary_i2c_slave = OV6xx0_SID;
if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0)
goto error;
if (init_ov_sensor(ov) < 0) {
/* Test for 8xx0 */
ov->primary_i2c_slave = OV8xx0_SID;
if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0)
goto error;
if (init_ov_sensor(ov) < 0) {
err("Can't determine sensor slave IDs");
goto error;
} else {
err("Detected unsupported OV8xx0 sensor");
goto error;
}
} else {
if (ov6xx0_configure(ov) < 0) {
err("Failed to configure OV6xx0");
goto error;
}
}
} else {
if (ov7xx0_configure(ov) < 0) {
err("Failed to configure OV7xx0");
goto error;
}
}
ov->maxwidth = 352;
ov->maxheight = 288;
// The OV518 cannot go as low as the sensor can
ov->minwidth = 160;
ov->minheight = 120;
return 0;
error:
err("OV518 Config failed");
return -EBUSY;
}
/****************************************************************************
* sysfs
***************************************************************************/
static inline struct usb_ov511 *cd_to_ov(struct class_device *cd)
{
struct video_device *vdev = to_video_device(cd);
return video_get_drvdata(vdev);
}
static ssize_t show_custom_id(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%d\n", ov->customid);
}
static CLASS_DEVICE_ATTR(custom_id, S_IRUGO, show_custom_id, NULL);
static ssize_t show_model(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", ov->desc);
}
static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
static ssize_t show_bridge(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", symbolic(brglist, ov->bridge));
}
static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_bridge, NULL);
static ssize_t show_sensor(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", symbolic(senlist, ov->sensor));
}
static CLASS_DEVICE_ATTR(sensor, S_IRUGO, show_sensor, NULL);
static ssize_t show_brightness(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
unsigned short x;
if (!ov->dev)
return -ENODEV;
sensor_get_brightness(ov, &x);
return sprintf(buf, "%d\n", x >> 8);
}
static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
static ssize_t show_saturation(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
unsigned short x;
if (!ov->dev)
return -ENODEV;
sensor_get_saturation(ov, &x);
return sprintf(buf, "%d\n", x >> 8);
}
static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
static ssize_t show_contrast(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
unsigned short x;
if (!ov->dev)
return -ENODEV;
sensor_get_contrast(ov, &x);
return sprintf(buf, "%d\n", x >> 8);
}
static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
static ssize_t show_hue(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
unsigned short x;
if (!ov->dev)
return -ENODEV;
sensor_get_hue(ov, &x);
return sprintf(buf, "%d\n", x >> 8);
}
static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
static ssize_t show_exposure(struct class_device *cd, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
unsigned char exp = 0;
if (!ov->dev)
return -ENODEV;
sensor_get_exposure(ov, &exp);
return sprintf(buf, "%d\n", exp >> 8);
}
static CLASS_DEVICE_ATTR(exposure, S_IRUGO, show_exposure, NULL);
static int ov_create_sysfs(struct video_device *vdev)
{
int rc;
rc = video_device_create_file(vdev, &class_device_attr_custom_id);
if (rc) goto err;
rc = video_device_create_file(vdev, &class_device_attr_model);
if (rc) goto err_id;
rc = video_device_create_file(vdev, &class_device_attr_bridge);
if (rc) goto err_model;
rc = video_device_create_file(vdev, &class_device_attr_sensor);
if (rc) goto err_bridge;
rc = video_device_create_file(vdev, &class_device_attr_brightness);
if (rc) goto err_sensor;
rc = video_device_create_file(vdev, &class_device_attr_saturation);
if (rc) goto err_bright;
rc = video_device_create_file(vdev, &class_device_attr_contrast);
if (rc) goto err_sat;
rc = video_device_create_file(vdev, &class_device_attr_hue);
if (rc) goto err_contrast;
rc = video_device_create_file(vdev, &class_device_attr_exposure);
if (rc) goto err_hue;
return 0;
err_hue:
video_device_remove_file(vdev, &class_device_attr_hue);
err_contrast:
video_device_remove_file(vdev, &class_device_attr_contrast);
err_sat:
video_device_remove_file(vdev, &class_device_attr_saturation);
err_bright:
video_device_remove_file(vdev, &class_device_attr_brightness);
err_sensor:
video_device_remove_file(vdev, &class_device_attr_sensor);
err_bridge:
video_device_remove_file(vdev, &class_device_attr_bridge);
err_model:
video_device_remove_file(vdev, &class_device_attr_model);
err_id:
video_device_remove_file(vdev, &class_device_attr_custom_id);
err:
return rc;
}
/****************************************************************************
* USB routines
***************************************************************************/
static int
ov51x_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_interface_descriptor *idesc;
struct usb_ov511 *ov;
int i;
PDEBUG(1, "probing for device...");
/* We don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1)
return -ENODEV;
idesc = &intf->cur_altsetting->desc;
if (idesc->bInterfaceClass != 0xFF)
return -ENODEV;
if (idesc->bInterfaceSubClass != 0x00)
return -ENODEV;
if ((ov = kzalloc(sizeof(*ov), GFP_KERNEL)) == NULL) {
err("couldn't kmalloc ov struct");
goto error_out;
}
ov->dev = dev;
ov->iface = idesc->bInterfaceNumber;
ov->led_policy = led;
ov->compress = compress;
ov->lightfreq = lightfreq;
ov->num_inputs = 1; /* Video decoder init functs. change this */
ov->stop_during_set = !fastset;
ov->backlight = backlight;
ov->mirror = mirror;
ov->auto_brt = autobright;
ov->auto_gain = autogain;
ov->auto_exp = autoexp;
switch (le16_to_cpu(dev->descriptor.idProduct)) {
case PROD_OV511:
ov->bridge = BRG_OV511;
ov->bclass = BCL_OV511;
break;
case PROD_OV511PLUS:
ov->bridge = BRG_OV511PLUS;
ov->bclass = BCL_OV511;
break;
case PROD_OV518:
ov->bridge = BRG_OV518;
ov->bclass = BCL_OV518;
break;
case PROD_OV518PLUS:
ov->bridge = BRG_OV518PLUS;
ov->bclass = BCL_OV518;
break;
case PROD_ME2CAM:
if (le16_to_cpu(dev->descriptor.idVendor) != VEND_MATTEL)
goto error;
ov->bridge = BRG_OV511PLUS;
ov->bclass = BCL_OV511;
break;
default:
err("Unknown product ID 0x%04x", le16_to_cpu(dev->descriptor.idProduct));
goto error;
}
info("USB %s video device found", symbolic(brglist, ov->bridge));
init_waitqueue_head(&ov->wq);
mutex_init(&ov->lock); /* to 1 == available */
mutex_init(&ov->buf_lock);
mutex_init(&ov->i2c_lock);
mutex_init(&ov->cbuf_lock);
ov->buf_state = BUF_NOT_ALLOCATED;
if (usb_make_path(dev, ov->usb_path, OV511_USB_PATH_LEN) < 0) {
err("usb_make_path error");
goto error;
}
/* Allocate control transfer buffer. */
/* Must be kmalloc()'ed, for DMA compatibility */
ov->cbuf = kmalloc(OV511_CBUF_SIZE, GFP_KERNEL);
if (!ov->cbuf)
goto error;
if (ov->bclass == BCL_OV518) {
if (ov518_configure(ov) < 0)
goto error;
} else {
if (ov511_configure(ov) < 0)
goto error;
}
for (i = 0; i < OV511_NUMFRAMES; i++) {
ov->frame[i].framenum = i;
init_waitqueue_head(&ov->frame[i].wq);
}
for (i = 0; i < OV511_NUMSBUF; i++) {
ov->sbuf[i].ov = ov;
spin_lock_init(&ov->sbuf[i].lock);
ov->sbuf[i].n = i;
}
/* Unnecessary? (This is done on open(). Need to make sure variables
* are properly initialized without this before removing it, though). */
if (ov51x_set_default_params(ov) < 0)
goto error;
#ifdef OV511_DEBUG
if (dump_bridge) {
if (ov->bclass == BCL_OV511)
ov511_dump_regs(ov);
else
ov518_dump_regs(ov);
}
#endif
ov->vdev = video_device_alloc();
if (!ov->vdev)
goto error;
memcpy(ov->vdev, &vdev_template, sizeof(*ov->vdev));
ov->vdev->dev = &dev->dev;
video_set_drvdata(ov->vdev, ov);
for (i = 0; i < OV511_MAX_UNIT_VIDEO; i++) {
/* Minor 0 cannot be specified; assume user wants autodetect */
if (unit_video[i] == 0)
break;
if (video_register_device(ov->vdev, VFL_TYPE_GRABBER,
unit_video[i]) >= 0) {
break;
}
}
/* Use the next available one */
if ((ov->vdev->minor == -1) &&
video_register_device(ov->vdev, VFL_TYPE_GRABBER, -1) < 0) {
err("video_register_device failed");
goto error;
}
info("Device at %s registered to minor %d", ov->usb_path,
ov->vdev->minor);
usb_set_intfdata(intf, ov);
if (ov_create_sysfs(ov->vdev)) {
err("ov_create_sysfs failed");
goto error;
}
return 0;
error:
if (ov->vdev) {
if (-1 == ov->vdev->minor)
video_device_release(ov->vdev);
else
video_unregister_device(ov->vdev);
ov->vdev = NULL;
}
if (ov->cbuf) {
mutex_lock(&ov->cbuf_lock);
kfree(ov->cbuf);
ov->cbuf = NULL;
mutex_unlock(&ov->cbuf_lock);
}
kfree(ov);
ov = NULL;
error_out:
err("Camera initialization failed");
return -EIO;
}
static void
ov51x_disconnect(struct usb_interface *intf)
{
struct usb_ov511 *ov = usb_get_intfdata(intf);
int n;
PDEBUG(3, "");
usb_set_intfdata (intf, NULL);
if (!ov)
return;
if (ov->vdev)
video_unregister_device(ov->vdev);
for (n = 0; n < OV511_NUMFRAMES; n++)
ov->frame[n].grabstate = FRAME_ERROR;
ov->curframe = -1;
/* This will cause the process to request another frame */
for (n = 0; n < OV511_NUMFRAMES; n++)
wake_up_interruptible(&ov->frame[n].wq);
wake_up_interruptible(&ov->wq);
ov->streaming = 0;
ov51x_unlink_isoc(ov);
ov->dev = NULL;
/* Free the memory */
if (ov && !ov->user) {
mutex_lock(&ov->cbuf_lock);
kfree(ov->cbuf);
ov->cbuf = NULL;
mutex_unlock(&ov->cbuf_lock);
ov51x_dealloc(ov);
kfree(ov);
ov = NULL;
}
PDEBUG(3, "Disconnect complete");
}
static struct usb_driver ov511_driver = {
.name = "ov511",
.id_table = device_table,
.probe = ov51x_probe,
.disconnect = ov51x_disconnect
};
/****************************************************************************
*
* Module routines
*
***************************************************************************/
static int __init
usb_ov511_init(void)
{
int retval;
retval = usb_register(&ov511_driver);
if (retval)
goto out;
info(DRIVER_VERSION " : " DRIVER_DESC);
out:
return retval;
}
static void __exit
usb_ov511_exit(void)
{
usb_deregister(&ov511_driver);
info("driver deregistered");
}
module_init(usb_ov511_init);
module_exit(usb_ov511_exit);
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