diff options
Diffstat (limited to 'drivers/media/usb/gspca/dtcs033.c')
| -rw-r--r-- | drivers/media/usb/gspca/dtcs033.c | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/dtcs033.c b/drivers/media/usb/gspca/dtcs033.c new file mode 100644 index 000000000..7654c8c08 --- /dev/null +++ b/drivers/media/usb/gspca/dtcs033.c @@ -0,0 +1,439 @@ +/* + * 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) { + + gspca_err(gspca_dev, "usb error request no: %d / %d\n", + i, n_reqs); + } else if (preq->bRequestType & USB_DIR_IN) { + + gspca_dbg(gspca_dev, D_STREAM, + "USB IN (%d) returned[%d] %3ph %s", + i, + preq->wLength, + gspca_dev->usb_buf, + 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) + gspca_err(gspca_dev, "usb error in setexposure(gain) sequence\n"); + + reg_rw(gspca_dev, + bRequestType, bRequest, (xtimeVal<<4), 0x6300, 0); + if (gspca_dev->usb_err < 0) + gspca_err(gspca_dev, "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) { + gspca_err(gspca_dev, "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; +} |