440 lines
13 KiB
C
440 lines
13 KiB
C
/*
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* Subdriver for Scopium astro-camera (DTCS033, 0547:7303)
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*
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* Copyright (C) 2014 Robert Butora (robert.butora.fi@gmail.com)
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define MODULE_NAME "dtcs033"
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#include "gspca.h"
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MODULE_AUTHOR("Robert Butora <robert.butora.fi@gmail.com>");
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MODULE_DESCRIPTION("Scopium DTCS033 astro-cam USB Camera Driver");
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MODULE_LICENSE("GPL");
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struct dtcs033_usb_requests {
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u8 bRequestType;
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u8 bRequest;
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u16 wValue;
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u16 wIndex;
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u16 wLength;
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};
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/* send a usb request */
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static void reg_rw(struct gspca_dev *gspca_dev,
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u8 bRequestType, u8 bRequest,
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u16 wValue, u16 wIndex, u16 wLength)
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{
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struct usb_device *udev = gspca_dev->dev;
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int ret;
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if (gspca_dev->usb_err < 0)
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return;
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ret = usb_control_msg(udev,
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usb_rcvctrlpipe(udev, 0),
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bRequest,
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bRequestType,
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wValue, wIndex,
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gspca_dev->usb_buf, wLength, 500);
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if (ret < 0) {
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gspca_dev->usb_err = ret;
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pr_err("usb_control_msg error %d\n", ret);
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}
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return;
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}
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/* send several usb in/out requests */
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static int reg_reqs(struct gspca_dev *gspca_dev,
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const struct dtcs033_usb_requests *preqs, int n_reqs)
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{
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int i = 0;
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const struct dtcs033_usb_requests *preq;
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while ((i < n_reqs) && (gspca_dev->usb_err >= 0)) {
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preq = &preqs[i];
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reg_rw(gspca_dev, preq->bRequestType, preq->bRequest,
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preq->wValue, preq->wIndex, preq->wLength);
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if (gspca_dev->usb_err < 0) {
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gspca_err(gspca_dev, "usb error request no: %d / %d\n",
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i, n_reqs);
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} else if (preq->bRequestType & USB_DIR_IN) {
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gspca_dbg(gspca_dev, D_STREAM,
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"USB IN (%d) returned[%d] %3ph %s",
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i,
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preq->wLength,
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gspca_dev->usb_buf,
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preq->wLength > 3 ? "...\n" : "\n");
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}
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i++;
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}
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return gspca_dev->usb_err;
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}
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/* -- subdriver interface implementation -- */
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#define DT_COLS (640)
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static const struct v4l2_pix_format dtcs033_mode[] = {
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/* raw Bayer patterned output */
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{DT_COLS, 480, V4L2_PIX_FMT_GREY, V4L2_FIELD_NONE,
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.bytesperline = DT_COLS,
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.sizeimage = DT_COLS*480,
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.colorspace = V4L2_COLORSPACE_SRGB,
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},
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/* this mode will demosaic the Bayer pattern */
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{DT_COLS, 480, V4L2_PIX_FMT_SRGGB8, V4L2_FIELD_NONE,
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.bytesperline = DT_COLS,
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.sizeimage = DT_COLS*480,
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.colorspace = V4L2_COLORSPACE_SRGB,
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}
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};
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/* config 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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gspca_dev->cam.cam_mode = dtcs033_mode;
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gspca_dev->cam.nmodes = ARRAY_SIZE(dtcs033_mode);
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gspca_dev->cam.bulk = 1;
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gspca_dev->cam.bulk_nurbs = 1;
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gspca_dev->cam.bulk_size = DT_COLS*512;
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return 0;
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}
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/* init 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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return 0;
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}
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/* start stop the camera */
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static int dtcs033_start(struct gspca_dev *gspca_dev);
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static void dtcs033_stopN(struct gspca_dev *gspca_dev);
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/* intercept camera image data */
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static void dtcs033_pkt_scan(struct gspca_dev *gspca_dev,
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u8 *data, /* packet data */
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int len) /* packet data length */
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{
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/* drop incomplete frames */
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if (len != DT_COLS*512) {
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gspca_dev->last_packet_type = DISCARD_PACKET;
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/* gspca.c: discard invalidates the whole frame. */
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return;
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}
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/* forward complete frames */
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gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
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gspca_frame_add(gspca_dev, INTER_PACKET,
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data + 16*DT_COLS,
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len - 32*DT_COLS); /* skip first & last 16 lines */
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gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
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return;
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}
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/* -- controls: exposure and gain -- */
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static void dtcs033_setexposure(struct gspca_dev *gspca_dev,
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s32 expo, s32 gain)
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{
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/* gain [dB] encoding */
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u16 sGain = (u16)gain;
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u16 gainVal = 224+(sGain-14)*(768-224)/(33-14);
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u16 wIndex = 0x0100|(0x00FF&gainVal);
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u16 wValue = (0xFF00&gainVal)>>8;
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/* exposure time [msec] encoding */
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u16 sXTime = (u16)expo;
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u16 xtimeVal = (524*(150-(sXTime-1)))/150;
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const u8 bRequestType =
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
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const u8 bRequest = 0x18;
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reg_rw(gspca_dev,
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bRequestType, bRequest, wValue, wIndex, 0);
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if (gspca_dev->usb_err < 0)
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gspca_err(gspca_dev, "usb error in setexposure(gain) sequence\n");
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reg_rw(gspca_dev,
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bRequestType, bRequest, (xtimeVal<<4), 0x6300, 0);
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if (gspca_dev->usb_err < 0)
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gspca_err(gspca_dev, "usb error in setexposure(time) sequence\n");
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}
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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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/* exposure & gain controls */
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struct {
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struct v4l2_ctrl *exposure;
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struct v4l2_ctrl *gain;
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};
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};
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static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct gspca_dev *gspca_dev =
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container_of(ctrl->handler,
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struct gspca_dev, ctrl_handler);
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struct sd *sd = (struct sd *) gspca_dev;
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gspca_dev->usb_err = 0;
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if (!gspca_dev->streaming)
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return 0;
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switch (ctrl->id) {
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case V4L2_CID_EXPOSURE:
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dtcs033_setexposure(gspca_dev,
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ctrl->val, sd->gain->val);
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break;
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case V4L2_CID_GAIN:
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dtcs033_setexposure(gspca_dev,
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sd->exposure->val, ctrl->val);
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break;
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}
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return gspca_dev->usb_err;
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}
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static const struct v4l2_ctrl_ops sd_ctrl_ops = {
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.s_ctrl = sd_s_ctrl,
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};
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static int dtcs033_init_controls(struct gspca_dev *gspca_dev)
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{
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struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
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struct sd *sd = (struct sd *) gspca_dev;
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gspca_dev->vdev.ctrl_handler = hdl;
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v4l2_ctrl_handler_init(hdl, 2);
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/* min max step default */
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sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_EXPOSURE,
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1, 150, 1, 75);/* [msec] */
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sd->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_GAIN,
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14, 33, 1, 24);/* [dB] */
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if (hdl->error) {
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gspca_err(gspca_dev, "Could not initialize controls: %d\n",
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hdl->error);
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return hdl->error;
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}
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v4l2_ctrl_cluster(2, &sd->exposure);
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return 0;
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}
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/* sub-driver description */
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static const struct sd_desc sd_desc = {
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.name = MODULE_NAME,
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.config = sd_config,
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.init = sd_init,
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.start = dtcs033_start,
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.stopN = dtcs033_stopN,
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.pkt_scan = dtcs033_pkt_scan,
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.init_controls = dtcs033_init_controls,
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};
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/* -- module initialisation -- */
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static const struct usb_device_id device_table[] = {
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{USB_DEVICE(0x0547, 0x7303)},
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{}
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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/* device connect */
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static int sd_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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return gspca_dev_probe(intf, id,
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&sd_desc, sizeof(struct sd),
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THIS_MODULE);
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}
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static struct usb_driver sd_driver = {
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.name = MODULE_NAME,
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.id_table = device_table,
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.probe = sd_probe,
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.disconnect = gspca_disconnect,
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#ifdef CONFIG_PM
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.suspend = gspca_suspend,
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.resume = gspca_resume,
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.reset_resume = gspca_resume,
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#endif
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};
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module_usb_driver(sd_driver);
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/* ---------------------------------------------------------
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USB requests to start/stop the camera [USB 2.0 spec Ch.9].
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bRequestType :
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0x40 = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0xC0 = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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*/
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static const struct dtcs033_usb_requests dtcs033_start_reqs[] = {
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/* -- bRequest,wValue,wIndex,wLength */
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{ 0x40, 0x01, 0x0001, 0x000F, 0x0000 },
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{ 0x40, 0x01, 0x0000, 0x000F, 0x0000 },
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{ 0x40, 0x01, 0x0001, 0x000F, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x7F00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1001, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0004, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x7F01, 0x0000 },
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{ 0x40, 0x18, 0x30E0, 0x0009, 0x0000 },
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{ 0x40, 0x18, 0x0500, 0x012C, 0x0000 },
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{ 0x40, 0x18, 0x0380, 0x0200, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x035C, 0x0000 },
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{ 0x40, 0x18, 0x05C0, 0x0438, 0x0000 },
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{ 0x40, 0x18, 0x0440, 0x0500, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0668, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0700, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0800, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0900, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0A00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0B00, 0x0000 },
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{ 0x40, 0x18, 0x30E0, 0x6009, 0x0000 },
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{ 0x40, 0x18, 0x0500, 0x612C, 0x0000 },
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{ 0x40, 0x18, 0x2090, 0x6274, 0x0000 },
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{ 0x40, 0x18, 0x05C0, 0x6338, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6400, 0x0000 },
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{ 0x40, 0x18, 0x05C0, 0x6538, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6600, 0x0000 },
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{ 0x40, 0x18, 0x0680, 0x6744, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6800, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6900, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6A00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6B00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6C00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6D00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6E00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x808C, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0x8101, 0x0000 },
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{ 0x40, 0x18, 0x30E0, 0x8200, 0x0000 },
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{ 0x40, 0x18, 0x0810, 0x832C, 0x0000 },
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{ 0x40, 0x18, 0x0680, 0x842B, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x8500, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x8600, 0x0000 },
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{ 0x40, 0x18, 0x0280, 0x8715, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x880C, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0x8901, 0x0000 },
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{ 0x40, 0x18, 0x30E0, 0x8A00, 0x0000 },
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{ 0x40, 0x18, 0x0810, 0x8B2C, 0x0000 },
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{ 0x40, 0x18, 0x0680, 0x8C2B, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x8D00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x8E00, 0x0000 },
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{ 0x40, 0x18, 0x0280, 0x8F15, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0xD040, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0xD100, 0x0000 },
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{ 0x40, 0x18, 0x00B0, 0xD20A, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0xD300, 0x0000 },
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{ 0x40, 0x18, 0x30E2, 0xD40D, 0x0000 },
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{ 0x40, 0x18, 0x0001, 0xD5C0, 0x0000 },
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{ 0x40, 0x18, 0x00A0, 0xD60A, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0xD700, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x7F00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1501, 0x0000 },
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{ 0x40, 0x18, 0x0001, 0x01FF, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0200, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x0304, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1101, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1201, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1300, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1400, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1601, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1800, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1900, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1A00, 0x0000 },
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{ 0x40, 0x18, 0x2000, 0x1B00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x1C00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x2100, 0x0000 },
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{ 0x40, 0x18, 0x00C0, 0x228E, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x3001, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0x3101, 0x0000 },
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{ 0x40, 0x18, 0x0008, 0x3301, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x3400, 0x0000 },
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{ 0x40, 0x18, 0x0012, 0x3549, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x3620, 0x0000 },
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{ 0x40, 0x18, 0x0001, 0x3700, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x4000, 0x0000 },
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{ 0x40, 0x18, 0xFFFF, 0x41FF, 0x0000 },
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{ 0x40, 0x18, 0xFFFF, 0x42FF, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x500F, 0x0000 },
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{ 0x40, 0x18, 0x2272, 0x5108, 0x0000 },
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{ 0x40, 0x18, 0x2272, 0x5208, 0x0000 },
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{ 0x40, 0x18, 0xFFFF, 0x53FF, 0x0000 },
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{ 0x40, 0x18, 0xFFFF, 0x54FF, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6000, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6102, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0x6214, 0x0000 },
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{ 0x40, 0x18, 0x0C80, 0x6300, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6401, 0x0000 },
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{ 0x40, 0x18, 0x0680, 0x6551, 0x0000 },
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{ 0x40, 0x18, 0xFFFF, 0x66FF, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6702, 0x0000 },
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{ 0x40, 0x18, 0x0010, 0x6800, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6900, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6A00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6B00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6C00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6D01, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6E00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x6F00, 0x0000 },
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{ 0x40, 0x18, 0x0000, 0x7000, 0x0000 },
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|
{ 0x40, 0x18, 0x0001, 0x7118, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x2001, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x1101, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x1301, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x1300, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x1501, 0x0000 },
|
|
{ 0xC0, 0x11, 0x0000, 0x24C0, 0x0003 },
|
|
{ 0x40, 0x18, 0x0000, 0x3000, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x3620, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x1501, 0x0000 },
|
|
{ 0x40, 0x18, 0x0010, 0x6300, 0x0000 },
|
|
{ 0x40, 0x18, 0x0002, 0x01F0, 0x0000 },
|
|
{ 0x40, 0x01, 0x0003, 0x000F, 0x0000 }
|
|
};
|
|
|
|
static const struct dtcs033_usb_requests dtcs033_stop_reqs[] = {
|
|
/* -- bRequest,wValue,wIndex,wLength */
|
|
{ 0x40, 0x01, 0x0001, 0x000F, 0x0000 },
|
|
{ 0x40, 0x01, 0x0000, 0x000F, 0x0000 },
|
|
{ 0x40, 0x18, 0x0000, 0x0003, 0x0000 }
|
|
};
|
|
static int dtcs033_start(struct gspca_dev *gspca_dev)
|
|
{
|
|
return reg_reqs(gspca_dev, dtcs033_start_reqs,
|
|
ARRAY_SIZE(dtcs033_start_reqs));
|
|
}
|
|
|
|
static void dtcs033_stopN(struct gspca_dev *gspca_dev)
|
|
{
|
|
reg_reqs(gspca_dev, dtcs033_stop_reqs,
|
|
ARRAY_SIZE(dtcs033_stop_reqs));
|
|
return;
|
|
}
|