/*
* ov534/ov772x gspca driver
* Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
*
* Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
* USB protocol reverse engineered by Jim Paris <jim@jtan.com>
* https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
*
* 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
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define MODULE_NAME "ov534"
#include "gspca.h"
#define OV534_REG_ADDRESS 0xf1 /* ? */
#define OV534_REG_SUBADDR 0xf2
#define OV534_REG_WRITE 0xf3
#define OV534_REG_READ 0xf4
#define OV534_REG_OPERATION 0xf5
#define OV534_REG_STATUS 0xf6
#define OV534_OP_WRITE_3 0x37
#define OV534_OP_WRITE_2 0x33
#define OV534_OP_READ_2 0xf9
#define CTRL_TIMEOUT 500
MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
MODULE_LICENSE("GPL");
/* global parameters */
static int frame_rate;
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
};
/* V4L2 controls supported by the driver */
static struct ctrl sd_ctrls[] = {
};
static struct v4l2_pix_format vga_mode[] = {
{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
.bytesperline = 640 * 2,
.sizeimage = 640 * 480 * 2,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0},
};
static void ov534_reg_write(struct usb_device *udev, u16 reg, u16 val)
{
u16 data = val;
int ret;
PDEBUG(D_USBO, "reg=0x%04x, val=0%04x", reg, val);
ret = usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
0x1,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0, reg, &data, 1, CTRL_TIMEOUT);
if (ret < 0)
PDEBUG(D_ERR, "write failed");
}
static u16 ov534_reg_read(struct usb_device *udev, u16 reg)
{
u16 data;
int ret;
ret = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
0x1,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0, reg, &data, 1, CTRL_TIMEOUT);
PDEBUG(D_USBI, "reg=0x%04x, data=0x%04x", reg, data);
if (ret < 0)
PDEBUG(D_ERR, "read failed");
return data;
}
static void ov534_reg_verify_write(struct usb_device *udev, u16 reg, u16 val)
{
u16 data;
ov534_reg_write(udev, reg, val);
data = ov534_reg_read(udev, reg);
if (data != val) {
PDEBUG(D_ERR | D_USBO,
"unexpected result from read: 0x%04x != 0x%04x", val,
data);
}
}
/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
* (direction and output)? */
static void ov534_set_led(struct usb_device *udev, int status)
{
u16 data;
PDEBUG(D_CONF, "led status: %d", status);
data = ov534_reg_read(udev, 0x21);
data |= 0x80;
ov534_reg_write(udev, 0x21, data);
data = ov534_reg_read(udev, 0x23);
if (status)
data |= 0x80;
else
data &= ~(0x80);
ov534_reg_write(udev, 0x23, data);
}
static int sccb_check_status(struct usb_device *udev)
{
u16 data;
int i;
for (i = 0; i < 5; i++) {
data = ov534_reg_read(udev, OV534_REG_STATUS);
switch (data & 0xFF) {
case 0x00:
return 1;
case 0x04:
return 0;
case 0x03:
break;
default:
PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5\n",
data, i + 1);
}
}
return 0;
}
static void sccb_reg_write(struct usb_device *udev, u16 reg, u16 val)
{
PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%04x", reg, val);
ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
ov534_reg_write(udev, OV534_REG_WRITE, val);
ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
if (!sccb_check_status(udev))
PDEBUG(D_ERR, "sccb_reg_write failed");
}
/* setup method */
static void ov534_setup(struct usb_device *udev)
{
ov534_reg_verify_write(udev, 0xe7, 0x3a);
ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
ov534_reg_write(udev, OV534_REG_ADDRESS, 0x42);
ov534_reg_verify_write(udev, 0xc2, 0x0c);
ov534_reg_verify_write(udev, 0x88, 0xf8);
ov534_reg_verify_write(udev, 0xc3, 0x69);
ov534_reg_verify_write(udev, 0x89, 0xff);
ov534_reg_verify_write(udev, 0x76, 0x03);
ov534_reg_verify_write(udev, 0x92, 0x01);
ov534_reg_verify_write(udev, 0x93, 0x18);
ov534_reg_verify_write(udev, 0x94, 0x10);
ov534_reg_verify_write(udev, 0x95, 0x10);
ov534_reg_verify_write(udev, 0xe2, 0x00);
ov534_reg_verify_write(udev, 0xe7, 0x3e);
ov534_reg_write(udev, 0x1c, 0x0a);
ov534_reg_write(udev, 0x1d, 0x22);
ov534_reg_write(udev, 0x1d, 0x06);
ov534_reg_verify_write(udev, 0x96, 0x00);
ov534_reg_write(udev, 0x97, 0x20);
ov534_reg_write(udev, 0x97, 0x20);
ov534_reg_write(udev, 0x97, 0x20);
ov534_reg_write(udev, 0x97, 0x0a);
ov534_reg_write(udev, 0x97, 0x3f);
ov534_reg_write(udev, 0x97, 0x4a);
ov534_reg_write(udev, 0x97, 0x20);
ov534_reg_write(udev, 0x97, 0x15);
ov534_reg_write(udev, 0x97, 0x0b);
ov534_reg_verify_write(udev, 0x8e, 0x40);
ov534_reg_verify_write(udev, 0x1f, 0x81);
ov534_reg_verify_write(udev, 0x34, 0x05);
ov534_reg_verify_write(udev, 0xe3, 0x04);
ov534_reg_verify_write(udev, 0x88, 0x00);
ov534_reg_verify_write(udev, 0x89, 0x00);
ov534_reg_verify_write(udev, 0x76, 0x00);
ov534_reg_verify_write(udev, 0xe7, 0x2e);
ov534_reg_verify_write(udev, 0x31, 0xf9);
ov534_reg_verify_write(udev, 0x25, 0x42);
ov534_reg_verify_write(udev, 0x21, 0xf0);
ov534_reg_write(udev, 0x1c, 0x00);
ov534_reg_write(udev, 0x1d, 0x40);
ov534_reg_write(udev, 0x1d, 0x02);
ov534_reg_write(udev, 0x1d, 0x00);
ov534_reg_write(udev, 0x1d, 0x02);
ov534_reg_write(udev, 0x1d, 0x57);
ov534_reg_write(udev, 0x1d, 0xff);
ov534_reg_verify_write(udev, 0x8d, 0x1c);
ov534_reg_verify_write(udev, 0x8e, 0x80);
ov534_reg_verify_write(udev, 0xe5, 0x04);
ov534_set_led(udev, 1);
sccb_reg_write(udev, 0x12, 0x80);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x11, 0x01);
ov534_set_led(udev, 0);
sccb_reg_write(udev, 0x3d, 0x03);
sccb_reg_write(udev, 0x17, 0x26);
sccb_reg_write(udev, 0x18, 0xa0);
sccb_reg_write(udev, 0x19, 0x07);
sccb_reg_write(udev, 0x1a, 0xf0);
sccb_reg_write(udev, 0x32, 0x00);
sccb_reg_write(udev, 0x29, 0xa0);
sccb_reg_write(udev, 0x2c, 0xf0);
sccb_reg_write(udev, 0x65, 0x20);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x42, 0x7f);
sccb_reg_write(udev, 0x63, 0xe0);
sccb_reg_write(udev, 0x64, 0xff);
sccb_reg_write(udev, 0x66, 0x00);
sccb_reg_write(udev, 0x13, 0xf0);
sccb_reg_write(udev, 0x0d, 0x41);
sccb_reg_write(udev, 0x0f, 0xc5);
sccb_reg_write(udev, 0x14, 0x11);
ov534_set_led(udev, 1);
sccb_reg_write(udev, 0x22, 0x7f);
sccb_reg_write(udev, 0x23, 0x03);
sccb_reg_write(udev, 0x24, 0x40);
sccb_reg_write(udev, 0x25, 0x30);
sccb_reg_write(udev, 0x26, 0xa1);
sccb_reg_write(udev, 0x2a, 0x00);
sccb_reg_write(udev, 0x2b, 0x00);
sccb_reg_write(udev, 0x6b, 0xaa);
sccb_reg_write(udev, 0x13, 0xff);
ov534_set_led(udev, 0);
sccb_reg_write(udev, 0x90, 0x05);
sccb_reg_write(udev, 0x91, 0x01);
sccb_reg_write(udev, 0x92, 0x03);
sccb_reg_write(udev, 0x93, 0x00);
sccb_reg_write(udev, 0x94, 0x60);
sccb_reg_write(udev, 0x95, 0x3c);
sccb_reg_write(udev, 0x96, 0x24);
sccb_reg_write(udev, 0x97, 0x1e);
sccb_reg_write(udev, 0x98, 0x62);
sccb_reg_write(udev, 0x99, 0x80);
sccb_reg_write(udev, 0x9a, 0x1e);
sccb_reg_write(udev, 0x9b, 0x08);
sccb_reg_write(udev, 0x9c, 0x20);
sccb_reg_write(udev, 0x9e, 0x81);
ov534_set_led(udev, 1);
sccb_reg_write(udev, 0xa6, 0x04);
sccb_reg_write(udev, 0x7e, 0x0c);
sccb_reg_write(udev, 0x7f, 0x16);
sccb_reg_write(udev, 0x80, 0x2a);
sccb_reg_write(udev, 0x81, 0x4e);
sccb_reg_write(udev, 0x82, 0x61);
sccb_reg_write(udev, 0x83, 0x6f);
sccb_reg_write(udev, 0x84, 0x7b);
sccb_reg_write(udev, 0x85, 0x86);
sccb_reg_write(udev, 0x86, 0x8e);
sccb_reg_write(udev, 0x87, 0x97);
sccb_reg_write(udev, 0x88, 0xa4);
sccb_reg_write(udev, 0x89, 0xaf);
sccb_reg_write(udev, 0x8a, 0xc5);
sccb_reg_write(udev, 0x8b, 0xd7);
sccb_reg_write(udev, 0x8c, 0xe8);
sccb_reg_write(udev, 0x8d, 0x20);
sccb_reg_write(udev, 0x0c, 0x90);
ov534_reg_verify_write(udev, 0xc0, 0x50);
ov534_reg_verify_write(udev, 0xc1, 0x3c);
ov534_reg_verify_write(udev, 0xc2, 0x0c);
ov534_set_led(udev, 1);
sccb_reg_write(udev, 0x2b, 0x00);
sccb_reg_write(udev, 0x22, 0x7f);
sccb_reg_write(udev, 0x23, 0x03);
sccb_reg_write(udev, 0x11, 0x01);
sccb_reg_write(udev, 0x0c, 0xd0);
sccb_reg_write(udev, 0x64, 0xff);
sccb_reg_write(udev, 0x0d, 0x41);
sccb_reg_write(udev, 0x14, 0x41);
sccb_reg_write(udev, 0x0e, 0xcd);
sccb_reg_write(udev, 0xac, 0xbf);
sccb_reg_write(udev, 0x8e, 0x00);
sccb_reg_write(udev, 0x0c, 0xd0);
ov534_reg_write(udev, 0xe0, 0x09);
ov534_set_led(udev, 0);
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct cam *cam;
cam = &gspca_dev->cam;
cam->epaddr = 0x01;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
cam->bulk_size = vga_mode[0].sizeimage;
cam->bulk_nurbs = 2;
PDEBUG(D_PROBE, "bulk_size = %d", cam->bulk_size);
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
int fr;
ov534_setup(gspca_dev->dev);
fr = frame_rate;
switch (fr) {
case 50:
sccb_reg_write(gspca_dev->dev, 0x11, 0x01);
sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02);
break;
case 40:
sccb_reg_write(gspca_dev->dev, 0x11, 0x02);
sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1);
ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04);
break;
/* case 30: */
default:
fr = 30;
sccb_reg_write(gspca_dev->dev, 0x11, 0x04);
sccb_reg_write(gspca_dev->dev, 0x0d, 0x81);
ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02);
break;
case 15:
sccb_reg_write(gspca_dev->dev, 0x11, 0x03);
sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04);
break;
}
PDEBUG(D_PROBE, "frame_rate: %d", fr);
return 0;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
PDEBUG(D_PROBE, "width = %d, height = %d",
gspca_dev->width, gspca_dev->height);
gspca_dev->cam.bulk_size = gspca_dev->width * gspca_dev->height * 2;
/* start streaming data */
ov534_set_led(gspca_dev->dev, 1);
ov534_reg_write(gspca_dev->dev, 0xe0, 0x00);
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
/* stop streaming data */
ov534_reg_write(gspca_dev->dev, 0xe0, 0x09);
ov534_set_led(gspca_dev->dev, 0);
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev, struct gspca_frame *frame,
__u8 *data, int len)
{
/*
* The current camera setup doesn't stream the last pixel, so we set it
* to a dummy value
*/
__u8 last_pixel[4] = { 0, 0, 0, 0 };
int framesize = gspca_dev->cam.bulk_size;
if (len == framesize - 4) {
frame =
gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len);
frame =
gspca_frame_add(gspca_dev, LAST_PACKET, frame, last_pixel,
4);
} else
PDEBUG(D_PACK, "packet len = %d, framesize = %d", len,
framesize);
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x06f8, 0x3002)}, /* Hercules Blog Webcam */
{USB_DEVICE(0x06f8, 0x3003)}, /* Hercules Dualpix HD Weblog */
{USB_DEVICE(0x1415, 0x2000)}, /* Sony HD Eye for PS3 (SLEH 00201) */
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
THIS_MODULE);
}
static struct usb_driver sd_driver = {
.name = MODULE_NAME,
.id_table = device_table,
.probe = sd_probe,
.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
};
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
if (usb_register(&sd_driver) < 0)
return -1;
PDEBUG(D_PROBE, "registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
PDEBUG(D_PROBE, "deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);
module_param(frame_rate, int, 0644);
MODULE_PARM_DESC(frame_rate, "Frame rate (15, 30, 40, 50)");
