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