506 lines
14 KiB
C
506 lines
14 KiB
C
/*
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* ov534/ov772x gspca driver
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* Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
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*
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* Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
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* USB protocol reverse engineered by Jim Paris <jim@jtan.com>
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* https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define MODULE_NAME "ov534"
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#include "gspca.h"
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#define OV534_REG_ADDRESS 0xf1 /* ? */
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#define OV534_REG_SUBADDR 0xf2
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#define OV534_REG_WRITE 0xf3
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#define OV534_REG_READ 0xf4
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#define OV534_REG_OPERATION 0xf5
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#define OV534_REG_STATUS 0xf6
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#define OV534_OP_WRITE_3 0x37
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#define OV534_OP_WRITE_2 0x33
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#define OV534_OP_READ_2 0xf9
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#define CTRL_TIMEOUT 500
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MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
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MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
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MODULE_LICENSE("GPL");
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/* global parameters */
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static int frame_rate;
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/* specific webcam descriptor */
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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__u8 frame_rate;
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};
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/* V4L2 controls supported by the driver */
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static struct ctrl sd_ctrls[] = {
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};
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static struct v4l2_pix_format vga_mode[] = {
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{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
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.bytesperline = 640 * 2,
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.sizeimage = 640 * 480 * 2,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 0},
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};
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static void ov534_reg_write(struct usb_device *udev, u16 reg, u16 val)
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{
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u16 data = val;
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int ret;
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PDEBUG(D_USBO, "reg=0x%04x, val=0%04x", reg, val);
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ret = usb_control_msg(udev,
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usb_sndctrlpipe(udev, 0),
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0x1,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0x0, reg, &data, 1, CTRL_TIMEOUT);
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if (ret < 0)
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PDEBUG(D_ERR, "write failed");
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}
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static u16 ov534_reg_read(struct usb_device *udev, u16 reg)
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{
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u16 data;
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int ret;
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ret = usb_control_msg(udev,
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usb_rcvctrlpipe(udev, 0),
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0x1,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0x0, reg, &data, 1, CTRL_TIMEOUT);
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PDEBUG(D_USBI, "reg=0x%04x, data=0x%04x", reg, data);
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if (ret < 0)
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PDEBUG(D_ERR, "read failed");
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return data;
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}
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static void ov534_reg_verify_write(struct usb_device *udev, u16 reg, u16 val)
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{
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u16 data;
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ov534_reg_write(udev, reg, val);
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data = ov534_reg_read(udev, reg);
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if (data != val) {
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PDEBUG(D_ERR | D_USBO,
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"unexpected result from read: 0x%04x != 0x%04x", val,
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data);
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}
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}
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/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
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* (direction and output)? */
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static void ov534_set_led(struct usb_device *udev, int status)
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{
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u16 data;
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PDEBUG(D_CONF, "led status: %d", status);
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data = ov534_reg_read(udev, 0x21);
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data |= 0x80;
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ov534_reg_write(udev, 0x21, data);
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data = ov534_reg_read(udev, 0x23);
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if (status)
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data |= 0x80;
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else
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data &= ~(0x80);
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ov534_reg_write(udev, 0x23, data);
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}
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static int sccb_check_status(struct usb_device *udev)
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{
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u16 data;
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int i;
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for (i = 0; i < 5; i++) {
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data = ov534_reg_read(udev, OV534_REG_STATUS);
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switch (data & 0xFF) {
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case 0x00:
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return 1;
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case 0x04:
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return 0;
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case 0x03:
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break;
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default:
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PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5\n",
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data, i + 1);
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}
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}
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return 0;
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}
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static void sccb_reg_write(struct usb_device *udev, u16 reg, u16 val)
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{
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PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%04x", reg, val);
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ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
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ov534_reg_write(udev, OV534_REG_WRITE, val);
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ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
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if (!sccb_check_status(udev))
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PDEBUG(D_ERR, "sccb_reg_write failed");
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}
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/* setup method */
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static void ov534_setup(struct usb_device *udev)
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{
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ov534_reg_verify_write(udev, 0xe7, 0x3a);
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ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
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ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
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ov534_reg_write(udev, OV534_REG_ADDRESS, 0x60);
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ov534_reg_write(udev, OV534_REG_ADDRESS, 0x42);
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ov534_reg_verify_write(udev, 0xc2, 0x0c);
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ov534_reg_verify_write(udev, 0x88, 0xf8);
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ov534_reg_verify_write(udev, 0xc3, 0x69);
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ov534_reg_verify_write(udev, 0x89, 0xff);
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ov534_reg_verify_write(udev, 0x76, 0x03);
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ov534_reg_verify_write(udev, 0x92, 0x01);
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ov534_reg_verify_write(udev, 0x93, 0x18);
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ov534_reg_verify_write(udev, 0x94, 0x10);
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ov534_reg_verify_write(udev, 0x95, 0x10);
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ov534_reg_verify_write(udev, 0xe2, 0x00);
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ov534_reg_verify_write(udev, 0xe7, 0x3e);
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ov534_reg_write(udev, 0x1c, 0x0a);
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ov534_reg_write(udev, 0x1d, 0x22);
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ov534_reg_write(udev, 0x1d, 0x06);
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ov534_reg_verify_write(udev, 0x96, 0x00);
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ov534_reg_write(udev, 0x97, 0x20);
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ov534_reg_write(udev, 0x97, 0x20);
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ov534_reg_write(udev, 0x97, 0x20);
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ov534_reg_write(udev, 0x97, 0x0a);
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ov534_reg_write(udev, 0x97, 0x3f);
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ov534_reg_write(udev, 0x97, 0x4a);
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ov534_reg_write(udev, 0x97, 0x20);
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ov534_reg_write(udev, 0x97, 0x15);
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ov534_reg_write(udev, 0x97, 0x0b);
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ov534_reg_verify_write(udev, 0x8e, 0x40);
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ov534_reg_verify_write(udev, 0x1f, 0x81);
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ov534_reg_verify_write(udev, 0x34, 0x05);
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ov534_reg_verify_write(udev, 0xe3, 0x04);
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ov534_reg_verify_write(udev, 0x88, 0x00);
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ov534_reg_verify_write(udev, 0x89, 0x00);
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ov534_reg_verify_write(udev, 0x76, 0x00);
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ov534_reg_verify_write(udev, 0xe7, 0x2e);
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ov534_reg_verify_write(udev, 0x31, 0xf9);
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ov534_reg_verify_write(udev, 0x25, 0x42);
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ov534_reg_verify_write(udev, 0x21, 0xf0);
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ov534_reg_write(udev, 0x1c, 0x00);
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ov534_reg_write(udev, 0x1d, 0x40);
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ov534_reg_write(udev, 0x1d, 0x02);
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ov534_reg_write(udev, 0x1d, 0x00);
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ov534_reg_write(udev, 0x1d, 0x02);
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ov534_reg_write(udev, 0x1d, 0x57);
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ov534_reg_write(udev, 0x1d, 0xff);
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ov534_reg_verify_write(udev, 0x8d, 0x1c);
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ov534_reg_verify_write(udev, 0x8e, 0x80);
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ov534_reg_verify_write(udev, 0xe5, 0x04);
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ov534_set_led(udev, 1);
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sccb_reg_write(udev, 0x12, 0x80);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x11, 0x01);
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ov534_set_led(udev, 0);
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sccb_reg_write(udev, 0x3d, 0x03);
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sccb_reg_write(udev, 0x17, 0x26);
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sccb_reg_write(udev, 0x18, 0xa0);
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sccb_reg_write(udev, 0x19, 0x07);
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sccb_reg_write(udev, 0x1a, 0xf0);
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sccb_reg_write(udev, 0x32, 0x00);
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sccb_reg_write(udev, 0x29, 0xa0);
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sccb_reg_write(udev, 0x2c, 0xf0);
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sccb_reg_write(udev, 0x65, 0x20);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x42, 0x7f);
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sccb_reg_write(udev, 0x63, 0xe0);
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sccb_reg_write(udev, 0x64, 0xff);
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sccb_reg_write(udev, 0x66, 0x00);
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sccb_reg_write(udev, 0x13, 0xf0);
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sccb_reg_write(udev, 0x0d, 0x41);
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sccb_reg_write(udev, 0x0f, 0xc5);
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sccb_reg_write(udev, 0x14, 0x11);
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ov534_set_led(udev, 1);
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sccb_reg_write(udev, 0x22, 0x7f);
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sccb_reg_write(udev, 0x23, 0x03);
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sccb_reg_write(udev, 0x24, 0x40);
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sccb_reg_write(udev, 0x25, 0x30);
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sccb_reg_write(udev, 0x26, 0xa1);
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sccb_reg_write(udev, 0x2a, 0x00);
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sccb_reg_write(udev, 0x2b, 0x00);
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sccb_reg_write(udev, 0x6b, 0xaa);
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sccb_reg_write(udev, 0x13, 0xff);
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ov534_set_led(udev, 0);
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sccb_reg_write(udev, 0x90, 0x05);
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sccb_reg_write(udev, 0x91, 0x01);
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sccb_reg_write(udev, 0x92, 0x03);
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sccb_reg_write(udev, 0x93, 0x00);
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sccb_reg_write(udev, 0x94, 0x60);
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sccb_reg_write(udev, 0x95, 0x3c);
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sccb_reg_write(udev, 0x96, 0x24);
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sccb_reg_write(udev, 0x97, 0x1e);
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sccb_reg_write(udev, 0x98, 0x62);
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sccb_reg_write(udev, 0x99, 0x80);
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sccb_reg_write(udev, 0x9a, 0x1e);
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sccb_reg_write(udev, 0x9b, 0x08);
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sccb_reg_write(udev, 0x9c, 0x20);
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sccb_reg_write(udev, 0x9e, 0x81);
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ov534_set_led(udev, 1);
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sccb_reg_write(udev, 0xa6, 0x04);
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sccb_reg_write(udev, 0x7e, 0x0c);
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sccb_reg_write(udev, 0x7f, 0x16);
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sccb_reg_write(udev, 0x80, 0x2a);
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sccb_reg_write(udev, 0x81, 0x4e);
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sccb_reg_write(udev, 0x82, 0x61);
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sccb_reg_write(udev, 0x83, 0x6f);
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sccb_reg_write(udev, 0x84, 0x7b);
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sccb_reg_write(udev, 0x85, 0x86);
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sccb_reg_write(udev, 0x86, 0x8e);
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sccb_reg_write(udev, 0x87, 0x97);
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sccb_reg_write(udev, 0x88, 0xa4);
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sccb_reg_write(udev, 0x89, 0xaf);
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sccb_reg_write(udev, 0x8a, 0xc5);
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sccb_reg_write(udev, 0x8b, 0xd7);
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sccb_reg_write(udev, 0x8c, 0xe8);
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sccb_reg_write(udev, 0x8d, 0x20);
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sccb_reg_write(udev, 0x0c, 0x90);
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ov534_reg_verify_write(udev, 0xc0, 0x50);
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ov534_reg_verify_write(udev, 0xc1, 0x3c);
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ov534_reg_verify_write(udev, 0xc2, 0x0c);
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ov534_set_led(udev, 1);
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sccb_reg_write(udev, 0x2b, 0x00);
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sccb_reg_write(udev, 0x22, 0x7f);
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sccb_reg_write(udev, 0x23, 0x03);
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sccb_reg_write(udev, 0x11, 0x01);
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sccb_reg_write(udev, 0x0c, 0xd0);
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sccb_reg_write(udev, 0x64, 0xff);
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sccb_reg_write(udev, 0x0d, 0x41);
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sccb_reg_write(udev, 0x14, 0x41);
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sccb_reg_write(udev, 0x0e, 0xcd);
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sccb_reg_write(udev, 0xac, 0xbf);
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sccb_reg_write(udev, 0x8e, 0x00);
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sccb_reg_write(udev, 0x0c, 0xd0);
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ov534_reg_write(udev, 0xe0, 0x09);
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ov534_set_led(udev, 0);
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}
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/* this function is called at probe time */
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static int sd_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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struct cam *cam;
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cam = &gspca_dev->cam;
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cam->epaddr = 0x01;
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cam->cam_mode = vga_mode;
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cam->nmodes = ARRAY_SIZE(vga_mode);
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cam->bulk_size = vga_mode[0].sizeimage;
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cam->bulk_nurbs = 2;
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PDEBUG(D_PROBE, "bulk_size = %d", cam->bulk_size);
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return 0;
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}
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/* this function is called at probe and resume time */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *)gspca_dev;
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ov534_setup(gspca_dev->dev);
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if (frame_rate > 0)
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sd->frame_rate = frame_rate;
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PDEBUG(D_PROBE, "frame_rate = %d", sd->frame_rate);
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switch (sd->frame_rate) {
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case 50:
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sccb_reg_write(gspca_dev->dev, 0x11, 0x01);
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sccb_check_status(gspca_dev->dev);
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sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
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sccb_check_status(gspca_dev->dev);
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ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02);
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break;
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case 40:
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sccb_reg_write(gspca_dev->dev, 0x11, 0x02);
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sccb_check_status(gspca_dev->dev);
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sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1);
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sccb_check_status(gspca_dev->dev);
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ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04);
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break;
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case 30:
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default:
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sccb_reg_write(gspca_dev->dev, 0x11, 0x04);
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sccb_check_status(gspca_dev->dev);
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sccb_reg_write(gspca_dev->dev, 0x0d, 0x81);
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sccb_check_status(gspca_dev->dev);
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ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02);
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break;
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case 15:
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sccb_reg_write(gspca_dev->dev, 0x11, 0x03);
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sccb_check_status(gspca_dev->dev);
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sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
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sccb_check_status(gspca_dev->dev);
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ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04);
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break;
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};
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return 0;
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}
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static int sd_start(struct gspca_dev *gspca_dev)
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{
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PDEBUG(D_PROBE, "width = %d, height = %d",
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gspca_dev->width, gspca_dev->height);
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gspca_dev->cam.bulk_size = gspca_dev->width * gspca_dev->height * 2;
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/* start streaming data */
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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)");
|