--- /dev/null
+/*
+ * Subdriver for Scopium astro-camera (DTCS033, 0547:7303)
+ *
+ * Copyright (C) 2014 Robert Butora (robert.butora.fi@gmail.com)
+ *
+ * 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define MODULE_NAME "dtcs033"
+#include "gspca.h"
+
+MODULE_AUTHOR("Robert Butora <robert.butora.fi@gmail.com>");
+MODULE_DESCRIPTION("Scopium DTCS033 astro-cam USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+struct dtcs033_usb_requests {
+ u8 bRequestType;
+ u8 bRequest;
+ u16 wValue;
+ u16 wIndex;
+ u16 wLength;
+};
+
+/* send a usb request */
+static void reg_rw(struct gspca_dev *gspca_dev,
+ u8 bRequestType, u8 bRequest,
+ u16 wValue, u16 wIndex, u16 wLength)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int ret;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ ret = usb_control_msg(udev,
+ usb_rcvctrlpipe(udev, 0),
+ bRequest,
+ bRequestType,
+ wValue, wIndex,
+ gspca_dev->usb_buf, wLength, 500);
+
+ if (ret < 0) {
+ gspca_dev->usb_err = ret;
+ pr_err("usb_control_msg error %d\n", ret);
+ }
+
+ return;
+}
+/* send several usb in/out requests */
+static int reg_reqs(struct gspca_dev *gspca_dev,
+ const struct dtcs033_usb_requests *preqs, int n_reqs)
+{
+ int i = 0;
+ const struct dtcs033_usb_requests *preq;
+
+ while ((i < n_reqs) && (gspca_dev->usb_err >= 0)) {
+
+ preq = &preqs[i];
+
+ reg_rw(gspca_dev, preq->bRequestType, preq->bRequest,
+ preq->wValue, preq->wIndex, preq->wLength);
+
+ if (gspca_dev->usb_err < 0) {
+
+ PERR("usb error request no: %d / %d\n",
+ i, n_reqs);
+ } else if (preq->bRequestType & USB_DIR_IN) {
+
+ PDEBUG(D_STREAM,
+ "USB IN (%d) returned[%d] %02X %02X %02X %s",
+ i,
+ preq->wLength,
+ gspca_dev->usb_buf[0],
+ gspca_dev->usb_buf[1],
+ gspca_dev->usb_buf[2],
+ preq->wLength > 3 ? "...\n" : "\n");
+ }
+
+ i++;
+ }
+ return gspca_dev->usb_err;
+}
+
+/* -- subdriver interface implementation -- */
+
+#define DT_COLS (640)
+static const struct v4l2_pix_format dtcs033_mode[] = {
+ /* raw Bayer patterned output */
+ {DT_COLS, 480, V4L2_PIX_FMT_GREY, V4L2_FIELD_NONE,
+ .bytesperline = DT_COLS,
+ .sizeimage = DT_COLS*480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ },
+ /* this mode will demosaic the Bayer pattern */
+ {DT_COLS, 480, V4L2_PIX_FMT_SRGGB8, V4L2_FIELD_NONE,
+ .bytesperline = DT_COLS,
+ .sizeimage = DT_COLS*480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ }
+};
+
+/* config called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ gspca_dev->cam.cam_mode = dtcs033_mode;
+ gspca_dev->cam.nmodes = ARRAY_SIZE(dtcs033_mode);
+
+ gspca_dev->cam.bulk = 1;
+ gspca_dev->cam.bulk_nurbs = 1;
+ gspca_dev->cam.bulk_size = DT_COLS*512;
+
+ return 0;
+}
+
+/* init called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ return 0;
+}
+
+/* start stop the camera */
+static int dtcs033_start(struct gspca_dev *gspca_dev);
+static void dtcs033_stopN(struct gspca_dev *gspca_dev);
+
+/* intercept camera image data */
+static void dtcs033_pkt_scan(struct gspca_dev *gspca_dev,
+ u8 *data, /* packet data */
+ int len) /* packet data length */
+{
+ /* drop incomplete frames */
+ if (len != DT_COLS*512) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ /* gspca.c: discard invalidates the whole frame. */
+ return;
+ }
+
+ /* forward complete frames */
+ gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
+ gspca_frame_add(gspca_dev, INTER_PACKET,
+ data + 16*DT_COLS,
+ len - 32*DT_COLS); /* skip first & last 16 lines */
+ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
+
+ return;
+}
+
+/* -- controls: exposure and gain -- */
+
+static void dtcs033_setexposure(struct gspca_dev *gspca_dev,
+ s32 expo, s32 gain)
+{
+ /* gain [dB] encoding */
+ u16 sGain = (u16)gain;
+ u16 gainVal = 224+(sGain-14)*(768-224)/(33-14);
+ u16 wIndex = 0x0100|(0x00FF&gainVal);
+ u16 wValue = (0xFF00&gainVal)>>8;
+
+ /* exposure time [msec] encoding */
+ u16 sXTime = (u16)expo;
+ u16 xtimeVal = (524*(150-(sXTime-1)))/150;
+
+ const u8 bRequestType =
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+ const u8 bRequest = 0x18;
+
+ reg_rw(gspca_dev,
+ bRequestType, bRequest, wValue, wIndex, 0);
+ if (gspca_dev->usb_err < 0)
+ PERR("usb error in setexposure(gain) sequence.\n");
+
+ reg_rw(gspca_dev,
+ bRequestType, bRequest, (xtimeVal<<4), 0x6300, 0);
+ if (gspca_dev->usb_err < 0)
+ PERR("usb error in setexposure(time) sequence.\n");
+}
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev;/* !! must be the first item */
+
+ /* exposure & gain controls */
+ struct {
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *gain;
+ };
+};
+
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gspca_dev *gspca_dev =
+ container_of(ctrl->handler,
+ struct gspca_dev, ctrl_handler);
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ gspca_dev->usb_err = 0;
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE:
+ dtcs033_setexposure(gspca_dev,
+ ctrl->val, sd->gain->val);
+ break;
+ case V4L2_CID_GAIN:
+ dtcs033_setexposure(gspca_dev,
+ sd->exposure->val, ctrl->val);
+ break;
+ }
+ return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+ .s_ctrl = sd_s_ctrl,
+};
+
+static int dtcs033_init_controls(struct gspca_dev *gspca_dev)
+{
+ struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 2);
+ /* min max step default */
+ sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE,
+ 1, 150, 1, 75);/* [msec] */
+ sd->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN,
+ 14, 33, 1, 24);/* [dB] */
+ if (hdl->error) {
+ PERR("Could not initialize controls: %d\n",
+ hdl->error);
+ return hdl->error;
+ }
+
+ v4l2_ctrl_cluster(2, &sd->exposure);
+ return 0;
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .config = sd_config,
+ .init = sd_init,
+ .start = dtcs033_start,
+ .stopN = dtcs033_stopN,
+ .pkt_scan = dtcs033_pkt_scan,
+ .init_controls = dtcs033_init_controls,
+};
+
+/* -- module initialisation -- */
+
+static const struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x0547, 0x7303)},
+ {}
+};
+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);
+
+
+/* ---------------------------------------------------------
+ USB requests to start/stop the camera [USB 2.0 spec Ch.9].
+
+ bRequestType :
+ 0x40 = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0xC0 = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+*/
+static const struct dtcs033_usb_requests dtcs033_start_reqs[] = {
+/* -- bRequest,wValue,wIndex,wLength */
+{ 0x40, 0x01, 0x0001, 0x000F, 0x0000 },
+{ 0x40, 0x01, 0x0000, 0x000F, 0x0000 },
+{ 0x40, 0x01, 0x0001, 0x000F, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x7F00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1001, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0004, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x7F01, 0x0000 },
+{ 0x40, 0x18, 0x30E0, 0x0009, 0x0000 },
+{ 0x40, 0x18, 0x0500, 0x012C, 0x0000 },
+{ 0x40, 0x18, 0x0380, 0x0200, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x035C, 0x0000 },
+{ 0x40, 0x18, 0x05C0, 0x0438, 0x0000 },
+{ 0x40, 0x18, 0x0440, 0x0500, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0668, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0700, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0800, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0900, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0A00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0B00, 0x0000 },
+{ 0x40, 0x18, 0x30E0, 0x6009, 0x0000 },
+{ 0x40, 0x18, 0x0500, 0x612C, 0x0000 },
+{ 0x40, 0x18, 0x2090, 0x6274, 0x0000 },
+{ 0x40, 0x18, 0x05C0, 0x6338, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6400, 0x0000 },
+{ 0x40, 0x18, 0x05C0, 0x6538, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6600, 0x0000 },
+{ 0x40, 0x18, 0x0680, 0x6744, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6800, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6900, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6A00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6B00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6C00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6D00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6E00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x808C, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0x8101, 0x0000 },
+{ 0x40, 0x18, 0x30E0, 0x8200, 0x0000 },
+{ 0x40, 0x18, 0x0810, 0x832C, 0x0000 },
+{ 0x40, 0x18, 0x0680, 0x842B, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x8500, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x8600, 0x0000 },
+{ 0x40, 0x18, 0x0280, 0x8715, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x880C, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0x8901, 0x0000 },
+{ 0x40, 0x18, 0x30E0, 0x8A00, 0x0000 },
+{ 0x40, 0x18, 0x0810, 0x8B2C, 0x0000 },
+{ 0x40, 0x18, 0x0680, 0x8C2B, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x8D00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x8E00, 0x0000 },
+{ 0x40, 0x18, 0x0280, 0x8F15, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0xD040, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0xD100, 0x0000 },
+{ 0x40, 0x18, 0x00B0, 0xD20A, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0xD300, 0x0000 },
+{ 0x40, 0x18, 0x30E2, 0xD40D, 0x0000 },
+{ 0x40, 0x18, 0x0001, 0xD5C0, 0x0000 },
+{ 0x40, 0x18, 0x00A0, 0xD60A, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0xD700, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x7F00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1501, 0x0000 },
+{ 0x40, 0x18, 0x0001, 0x01FF, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0200, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x0304, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1101, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1201, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1300, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1400, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1601, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1800, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1900, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1A00, 0x0000 },
+{ 0x40, 0x18, 0x2000, 0x1B00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x1C00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x2100, 0x0000 },
+{ 0x40, 0x18, 0x00C0, 0x228E, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x3001, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0x3101, 0x0000 },
+{ 0x40, 0x18, 0x0008, 0x3301, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x3400, 0x0000 },
+{ 0x40, 0x18, 0x0012, 0x3549, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x3620, 0x0000 },
+{ 0x40, 0x18, 0x0001, 0x3700, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x4000, 0x0000 },
+{ 0x40, 0x18, 0xFFFF, 0x41FF, 0x0000 },
+{ 0x40, 0x18, 0xFFFF, 0x42FF, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x500F, 0x0000 },
+{ 0x40, 0x18, 0x2272, 0x5108, 0x0000 },
+{ 0x40, 0x18, 0x2272, 0x5208, 0x0000 },
+{ 0x40, 0x18, 0xFFFF, 0x53FF, 0x0000 },
+{ 0x40, 0x18, 0xFFFF, 0x54FF, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6000, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6102, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0x6214, 0x0000 },
+{ 0x40, 0x18, 0x0C80, 0x6300, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6401, 0x0000 },
+{ 0x40, 0x18, 0x0680, 0x6551, 0x0000 },
+{ 0x40, 0x18, 0xFFFF, 0x66FF, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6702, 0x0000 },
+{ 0x40, 0x18, 0x0010, 0x6800, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6900, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6A00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6B00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6C00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6D01, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6E00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x6F00, 0x0000 },
+{ 0x40, 0x18, 0x0000, 0x7000, 0x0000 },
+{ 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;
+}
Code Review / kvmfornfv.git / blobdiff