363 lines
7.9 KiB
C
363 lines
7.9 KiB
C
/*
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* Mars MR97310A library
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*
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* Copyright (C) 2009 Kyle Guinn <elyk03@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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define MODULE_NAME "mr97310a"
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#include "gspca.h"
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MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>");
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MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
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MODULE_LICENSE("GPL");
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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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u8 sof_read;
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};
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/* V4L2 controls supported by the driver */
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static struct ctrl sd_ctrls[] = {
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};
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static const struct v4l2_pix_format vga_mode[] = {
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{160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
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.bytesperline = 160,
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.sizeimage = 160 * 120,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 4},
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{176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
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.bytesperline = 176,
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.sizeimage = 176 * 144,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 3},
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{320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
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.bytesperline = 320,
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.sizeimage = 320 * 240,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 2},
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{352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
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.bytesperline = 352,
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.sizeimage = 352 * 288,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 1},
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{640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
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.bytesperline = 640,
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.sizeimage = 640 * 480,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0},
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};
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/* the bytes to write are in gspca_dev->usb_buf */
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static int reg_w(struct gspca_dev *gspca_dev, int len)
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{
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int rc;
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rc = usb_bulk_msg(gspca_dev->dev,
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usb_sndbulkpipe(gspca_dev->dev, 4),
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gspca_dev->usb_buf, len, NULL, 500);
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if (rc < 0)
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PDEBUG(D_ERR, "reg write [%02x] error %d",
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gspca_dev->usb_buf[0], rc);
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return rc;
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}
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/* this function is 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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struct cam *cam;
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cam = &gspca_dev->cam;
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cam->cam_mode = vga_mode;
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cam->nmodes = ARRAY_SIZE(vga_mode);
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return 0;
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}
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/* this function is 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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static int sd_start(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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__u8 *data = gspca_dev->usb_buf;
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int err_code;
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sd->sof_read = 0;
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/* Note: register descriptions guessed from MR97113A driver */
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data[0] = 0x01;
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data[1] = 0x01;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x00;
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data[1] = 0x0d;
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data[2] = 0x01;
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data[5] = 0x2b;
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data[7] = 0x00;
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data[9] = 0x50; /* reg 8, no scale down */
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data[10] = 0xc0;
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switch (gspca_dev->width) {
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case 160:
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data[9] |= 0x0c; /* reg 8, 4:1 scale down */
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/* fall thru */
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case 320:
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data[9] |= 0x04; /* reg 8, 2:1 scale down */
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/* fall thru */
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case 640:
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default:
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data[3] = 0x50; /* reg 2, H size */
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data[4] = 0x78; /* reg 3, V size */
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data[6] = 0x04; /* reg 5, H start */
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data[8] = 0x03; /* reg 7, V start */
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break;
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case 176:
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data[9] |= 0x04; /* reg 8, 2:1 scale down */
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/* fall thru */
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case 352:
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data[3] = 0x2c; /* reg 2, H size */
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data[4] = 0x48; /* reg 3, V size */
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data[6] = 0x94; /* reg 5, H start */
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data[8] = 0x63; /* reg 7, V start */
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break;
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}
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err_code = reg_w(gspca_dev, 11);
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if (err_code < 0)
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return err_code;
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data[0] = 0x0a;
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data[1] = 0x80;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x14;
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data[1] = 0x0a;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1b;
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data[1] = 0x00;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x15;
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data[1] = 0x16;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x16;
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data[1] = 0x10;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x17;
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data[1] = 0x3a;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x18;
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data[1] = 0x68;
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err_code = reg_w(gspca_dev, 2);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x00;
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data[2] = 0x02;
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data[3] = 0x06;
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data[4] = 0x59;
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data[5] = 0x0c;
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data[6] = 0x16;
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data[7] = 0x00;
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data[8] = 0x07;
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data[9] = 0x00;
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data[10] = 0x01;
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err_code = reg_w(gspca_dev, 11);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x04;
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data[2] = 0x11;
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data[3] = 0x01;
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err_code = reg_w(gspca_dev, 4);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x00;
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data[2] = 0x0a;
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data[3] = 0x00;
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data[4] = 0x01;
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data[5] = 0x00;
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data[6] = 0x00;
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data[7] = 0x01;
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data[8] = 0x00;
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data[9] = 0x0a;
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err_code = reg_w(gspca_dev, 10);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x04;
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data[2] = 0x11;
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data[3] = 0x01;
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err_code = reg_w(gspca_dev, 4);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x00;
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data[2] = 0x12;
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data[3] = 0x00;
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data[4] = 0x63;
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data[5] = 0x00;
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data[6] = 0x70;
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data[7] = 0x00;
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data[8] = 0x00;
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err_code = reg_w(gspca_dev, 9);
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if (err_code < 0)
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return err_code;
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data[0] = 0x1f;
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data[1] = 0x04;
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data[2] = 0x11;
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data[3] = 0x01;
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err_code = reg_w(gspca_dev, 4);
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if (err_code < 0)
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return err_code;
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data[0] = 0x00;
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data[1] = 0x4d; /* ISOC transfering enable... */
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err_code = reg_w(gspca_dev, 2);
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return err_code;
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}
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static void sd_stopN(struct gspca_dev *gspca_dev)
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{
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int result;
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gspca_dev->usb_buf[0] = 1;
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gspca_dev->usb_buf[1] = 0;
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result = reg_w(gspca_dev, 2);
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if (result < 0)
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PDEBUG(D_ERR, "Camera Stop failed");
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}
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/* Include pac common sof detection functions */
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#include "pac_common.h"
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static void sd_pkt_scan(struct gspca_dev *gspca_dev,
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struct gspca_frame *frame, /* target */
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__u8 *data, /* isoc packet */
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int len) /* iso packet length */
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{
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unsigned char *sof;
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sof = pac_find_sof(gspca_dev, data, len);
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if (sof) {
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int n;
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/* finish decoding current frame */
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n = sof - data;
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if (n > sizeof pac_sof_marker)
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n -= sizeof pac_sof_marker;
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else
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n = 0;
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frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
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data, n);
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/* Start next frame. */
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gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
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pac_sof_marker, sizeof pac_sof_marker);
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len -= sof - data;
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data = sof;
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}
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gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
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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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.ctrls = sd_ctrls,
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.nctrls = ARRAY_SIZE(sd_ctrls),
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.config = sd_config,
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.init = sd_init,
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.start = sd_start,
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.stopN = sd_stopN,
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.pkt_scan = sd_pkt_scan,
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};
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/* -- module initialisation -- */
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static const __devinitdata struct usb_device_id device_table[] = {
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{USB_DEVICE(0x08ca, 0x0111)},
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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, &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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#endif
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};
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/* -- module insert / remove -- */
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static int __init sd_mod_init(void)
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{
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if (usb_register(&sd_driver) < 0)
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return -1;
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PDEBUG(D_PROBE, "registered");
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return 0;
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}
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static void __exit sd_mod_exit(void)
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{
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usb_deregister(&sd_driver);
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PDEBUG(D_PROBE, "deregistered");
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}
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module_init(sd_mod_init);
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module_exit(sd_mod_exit);
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