// SPDX-License-Identifier: GPL-2.0-or-later /* * Syntek DV4000 (STK014) subdriver * * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr) */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "stk014" #include "gspca.h" #include "jpeg.h" MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver"); MODULE_LICENSE("GPL"); #define QUALITY 50 /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ u8 jpeg_hdr[JPEG_HDR_SZ]; }; static const struct v4l2_pix_format vga_mode[] = { {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 1}, {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; /* -- read a register -- */ static u8 reg_r(struct gspca_dev *gspca_dev, __u16 index) { struct usb_device *dev = gspca_dev->dev; int ret; if (gspca_dev->usb_err < 0) return 0; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0x00, index, gspca_dev->usb_buf, 1, 500); if (ret < 0) { pr_err("reg_r err %d\n", ret); gspca_dev->usb_err = ret; return 0; } return gspca_dev->usb_buf[0]; } /* -- write a register -- */ static void reg_w(struct gspca_dev *gspca_dev, __u16 index, __u16 value) { struct usb_device *dev = gspca_dev->dev; int ret; if (gspca_dev->usb_err < 0) return; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0x01, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); if (ret < 0) { pr_err("reg_w err %d\n", ret); gspca_dev->usb_err = ret; } } /* -- get a bulk value (4 bytes) -- */ static void rcv_val(struct gspca_dev *gspca_dev, int ads) { struct usb_device *dev = gspca_dev->dev; int alen, ret; reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff); reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff); reg_w(gspca_dev, 0x636, ads & 0xff); reg_w(gspca_dev, 0x637, 0); reg_w(gspca_dev, 0x638, 4); /* len & 0xff */ reg_w(gspca_dev, 0x639, 0); /* len >> 8 */ reg_w(gspca_dev, 0x63a, 0); reg_w(gspca_dev, 0x63b, 0); reg_w(gspca_dev, 0x630, 5); if (gspca_dev->usb_err < 0) return; ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, 0x05), gspca_dev->usb_buf, 4, /* length */ &alen, 500); /* timeout in milliseconds */ if (ret < 0) { pr_err("rcv_val err %d\n", ret); gspca_dev->usb_err = ret; } } /* -- send a bulk value -- */ static void snd_val(struct gspca_dev *gspca_dev, int ads, unsigned int val) { struct usb_device *dev = gspca_dev->dev; int alen, ret; __u8 seq = 0; if (ads == 0x003f08) { reg_r(gspca_dev, 0x0704); seq = reg_r(gspca_dev, 0x0705); reg_r(gspca_dev, 0x0650); reg_w(gspca_dev, 0x654, seq); } else { reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff); } reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff); reg_w(gspca_dev, 0x656, ads & 0xff); reg_w(gspca_dev, 0x657, 0); reg_w(gspca_dev, 0x658, 0x04); /* size */ reg_w(gspca_dev, 0x659, 0); reg_w(gspca_dev, 0x65a, 0); reg_w(gspca_dev, 0x65b, 0); reg_w(gspca_dev, 0x650, 5); if (gspca_dev->usb_err < 0) return; gspca_dev->usb_buf[0] = val >> 24; gspca_dev->usb_buf[1] = val >> 16; gspca_dev->usb_buf[2] = val >> 8; gspca_dev->usb_buf[3] = val; ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 6), gspca_dev->usb_buf, 4, &alen, 500); /* timeout in milliseconds */ if (ret < 0) { pr_err("snd_val err %d\n", ret); gspca_dev->usb_err = ret; } else { if (ads == 0x003f08) { seq += 4; seq &= 0x3f; reg_w(gspca_dev, 0x705, seq); } } } /* set a camera parameter */ static void set_par(struct gspca_dev *gspca_dev, int parval) { snd_val(gspca_dev, 0x003f08, parval); } static void setbrightness(struct gspca_dev *gspca_dev, s32 val) { int parval; parval = 0x06000000 /* whiteness */ + (val << 16); set_par(gspca_dev, parval); } static void setcontrast(struct gspca_dev *gspca_dev, s32 val) { int parval; parval = 0x07000000 /* contrast */ + (val << 16); set_par(gspca_dev, parval); } static void setcolors(struct gspca_dev *gspca_dev, s32 val) { int parval; parval = 0x08000000 /* saturation */ + (val << 16); set_par(gspca_dev, parval); } static void setlightfreq(struct gspca_dev *gspca_dev, s32 val) { set_par(gspca_dev, val == 1 ? 0x33640000 /* 50 Hz */ : 0x33780000); /* 60 Hz */ } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { gspca_dev->cam.cam_mode = vga_mode; gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { u8 ret; /* check if the device responds */ usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); ret = reg_r(gspca_dev, 0x0740); if (gspca_dev->usb_err >= 0) { if (ret != 0xff) { pr_err("init reg: 0x%02x\n", ret); gspca_dev->usb_err = -EIO; } } return gspca_dev->usb_err; } /* -- start the camera -- */ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret, value; /* create the JPEG header */ jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height, gspca_dev->pixfmt.width, 0x22); /* JPEG 411 */ jpeg_set_qual(sd->jpeg_hdr, QUALITY); /* work on alternate 1 */ usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); set_par(gspca_dev, 0x10000000); set_par(gspca_dev, 0x00000000); set_par(gspca_dev, 0x8002e001); set_par(gspca_dev, 0x14000000); if (gspca_dev->pixfmt.width > 320) value = 0x8002e001; /* 640x480 */ else value = 0x4001f000; /* 320x240 */ set_par(gspca_dev, value); ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, gspca_dev->alt); if (ret < 0) { pr_err("set intf %d %d failed\n", gspca_dev->iface, gspca_dev->alt); gspca_dev->usb_err = ret; goto out; } reg_r(gspca_dev, 0x0630); rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */ reg_r(gspca_dev, 0x0650); snd_val(gspca_dev, 0x000020, 0xffffffff); reg_w(gspca_dev, 0x0620, 0); reg_w(gspca_dev, 0x0630, 0); reg_w(gspca_dev, 0x0640, 0); reg_w(gspca_dev, 0x0650, 0); reg_w(gspca_dev, 0x0660, 0); set_par(gspca_dev, 0x09800000); /* Red ? */ set_par(gspca_dev, 0x0a800000); /* Green ? */ set_par(gspca_dev, 0x0b800000); /* Blue ? */ set_par(gspca_dev, 0x0d030000); /* Gamma ? */ /* start the video flow */ set_par(gspca_dev, 0x01000000); set_par(gspca_dev, 0x01000000); if (gspca_dev->usb_err >= 0) gspca_dbg(gspca_dev, D_STREAM, "camera started alt: 0x%02x\n", gspca_dev->alt); out: return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct usb_device *dev = gspca_dev->dev; set_par(gspca_dev, 0x02000000); set_par(gspca_dev, 0x02000000); usb_set_interface(dev, gspca_dev->iface, 1); reg_r(gspca_dev, 0x0630); rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */ reg_r(gspca_dev, 0x0650); snd_val(gspca_dev, 0x000020, 0xffffffff); reg_w(gspca_dev, 0x0620, 0); reg_w(gspca_dev, 0x0630, 0); reg_w(gspca_dev, 0x0640, 0); reg_w(gspca_dev, 0x0650, 0); reg_w(gspca_dev, 0x0660, 0); gspca_dbg(gspca_dev, D_STREAM, "camera stopped\n"); } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; static unsigned char ffd9[] = {0xff, 0xd9}; /* a frame starts with: * - 0xff 0xfe * - 0x08 0x00 - length (little endian ?!) * - 4 bytes = size of whole frame (BE - including header) * - 0x00 0x0c * - 0xff 0xd8 * - .. JPEG image with escape sequences (ff 00) * (without ending - ff d9) */ if (data[0] == 0xff && data[1] == 0xfe) { gspca_frame_add(gspca_dev, LAST_PACKET, ffd9, 2); /* put the JPEG 411 header */ gspca_frame_add(gspca_dev, FIRST_PACKET, sd->jpeg_hdr, JPEG_HDR_SZ); /* beginning of the frame */ #define STKHDRSZ 12 data += STKHDRSZ; len -= STKHDRSZ; } gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static int sd_s_ctrl(struct v4l2_ctrl *ctrl) { struct gspca_dev *gspca_dev = container_of(ctrl->handler, struct gspca_dev, ctrl_handler); gspca_dev->usb_err = 0; if (!gspca_dev->streaming) return 0; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: setbrightness(gspca_dev, ctrl->val); break; case V4L2_CID_CONTRAST: setcontrast(gspca_dev, ctrl->val); break; case V4L2_CID_SATURATION: setcolors(gspca_dev, ctrl->val); break; case V4L2_CID_POWER_LINE_FREQUENCY: setlightfreq(gspca_dev, ctrl->val); break; } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .s_ctrl = sd_s_ctrl, }; static int sd_init_controls(struct gspca_dev *gspca_dev) { struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 4); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_CONTRAST, 0, 255, 1, 127); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_SATURATION, 0, 255, 1, 127); v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, V4L2_CID_POWER_LINE_FREQUENCY, V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, V4L2_CID_POWER_LINE_FREQUENCY_50HZ); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } return 0; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init = sd_init, .init_controls = sd_init_controls, .start = sd_start, .stopN = sd_stopN, .pkt_scan = sd_pkt_scan, }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x05e1, 0x0893)}, {} }; 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, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver);