/* * ov534/ov772x gspca driver * Copyright (C) 2008 Antonio Ospite * * Based on a prototype written by Mark Ferrell * USB protocol reverse engineered by Jim Paris * 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 "); 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 */ __u8 frame_rate; }; /* 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) { struct sd *sd = (struct sd *)gspca_dev; ov534_setup(gspca_dev->dev); if (frame_rate > 0) sd->frame_rate = frame_rate; PDEBUG(D_PROBE, "frame_rate = %d", sd->frame_rate); switch (sd->frame_rate) { case 50: sccb_reg_write(gspca_dev->dev, 0x11, 0x01); sccb_check_status(gspca_dev->dev); sccb_reg_write(gspca_dev->dev, 0x0d, 0x41); sccb_check_status(gspca_dev->dev); ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02); break; case 40: sccb_reg_write(gspca_dev->dev, 0x11, 0x02); sccb_check_status(gspca_dev->dev); sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1); sccb_check_status(gspca_dev->dev); ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04); break; case 30: default: sccb_reg_write(gspca_dev->dev, 0x11, 0x04); sccb_check_status(gspca_dev->dev); sccb_reg_write(gspca_dev->dev, 0x0d, 0x81); sccb_check_status(gspca_dev->dev); ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x02); break; case 15: sccb_reg_write(gspca_dev->dev, 0x11, 0x03); sccb_check_status(gspca_dev->dev); sccb_reg_write(gspca_dev->dev, 0x0d, 0x41); sccb_check_status(gspca_dev->dev); ov534_reg_verify_write(gspca_dev->dev, 0xe5, 0x04); break; }; 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)");