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linux/drivers/media/video/ov511.c
Hans Verkuil c6eb8eafdb V4L/DVB (8757): v4l-dvb: fix a bunch of sparse warnings 
Fixed a lot of sparse warnings: mostly warnings about shadowed variables
and signed/unsigned mismatches.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-09-03 18:37:13 -03:00

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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/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 unsigned 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, i, 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");
for (i = 0; i < n; i++)
usb_free_urb(ov->sbuf[i].urb);
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,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
#endif
.llseek = no_llseek,
};
static struct video_device vdev_template = {
.name = "OV511 USB Camera",
.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 device *cd)
{
struct video_device *vdev = to_video_device(cd);
return video_get_drvdata(vdev);
}
static ssize_t show_custom_id(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%d\n", ov->customid);
}
static DEVICE_ATTR(custom_id, S_IRUGO, show_custom_id, NULL);
static ssize_t show_model(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", ov->desc);
}
static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
static ssize_t show_bridge(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", symbolic(brglist, ov->bridge));
}
static DEVICE_ATTR(bridge, S_IRUGO, show_bridge, NULL);
static ssize_t show_sensor(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct usb_ov511 *ov = cd_to_ov(cd);
return sprintf(buf, "%s\n", symbolic(senlist, ov->sensor));
}
static DEVICE_ATTR(sensor, S_IRUGO, show_sensor, NULL);
static ssize_t show_brightness(struct device *cd,
struct device_attribute *attr, 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 DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
static ssize_t show_saturation(struct device *cd,
struct device_attribute *attr, 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 DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
static ssize_t show_contrast(struct device *cd,
struct device_attribute *attr, 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 DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
static ssize_t show_hue(struct device *cd,
struct device_attribute *attr, 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 DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
static ssize_t show_exposure(struct device *cd,
struct device_attribute *attr, 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);
}
static DEVICE_ATTR(exposure, S_IRUGO, show_exposure, NULL);
static int ov_create_sysfs(struct video_device *vdev)
{
int rc;
rc = device_create_file(&vdev->dev, &dev_attr_custom_id);
if (rc) goto err;
rc = device_create_file(&vdev->dev, &dev_attr_model);
if (rc) goto err_id;
rc = device_create_file(&vdev->dev, &dev_attr_bridge);
if (rc) goto err_model;
rc = device_create_file(&vdev->dev, &dev_attr_sensor);
if (rc) goto err_bridge;
rc = device_create_file(&vdev->dev, &dev_attr_brightness);
if (rc) goto err_sensor;
rc = device_create_file(&vdev->dev, &dev_attr_saturation);
if (rc) goto err_bright;
rc = device_create_file(&vdev->dev, &dev_attr_contrast);
if (rc) goto err_sat;
rc = device_create_file(&vdev->dev, &dev_attr_hue);
if (rc) goto err_contrast;
rc = device_create_file(&vdev->dev, &dev_attr_exposure);
if (rc) goto err_hue;
return 0;
err_hue:
device_remove_file(&vdev->dev, &dev_attr_hue);
err_contrast:
device_remove_file(&vdev->dev, &dev_attr_contrast);
err_sat:
device_remove_file(&vdev->dev, &dev_attr_saturation);
err_bright:
device_remove_file(&vdev->dev, &dev_attr_brightness);
err_sensor:
device_remove_file(&vdev->dev, &dev_attr_sensor);
err_bridge:
device_remove_file(&vdev->dev, &dev_attr_bridge);
err_model:
device_remove_file(&vdev->dev, &dev_attr_model);
err_id:
device_remove_file(&vdev->dev, &dev_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->parent = &intf->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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