/*
* Syntek DV4000 (STK014) subdriver
*
* Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
*
* 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 "stk014"
#include "gspca.h"
#include "jpeg.h"
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
unsigned char brightness;
unsigned char contrast;
unsigned char colors;
unsigned char lightfreq;
};
/* global parameters */
static int sd_quant = 7; /* <= 4 KO - 7: good (enough!) */
/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
static struct ctrl sd_ctrls[] = {
{
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 255,
.step = 1,
#define BRIGHTNESS_DEF 127
.default_value = BRIGHTNESS_DEF,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
{
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 255,
.step = 1,
#define CONTRAST_DEF 127
.default_value = CONTRAST_DEF,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
{
{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Color",
.minimum = 0,
.maximum = 255,
.step = 1,
#define COLOR_DEF 127
.default_value = COLOR_DEF,
},
.set = sd_setcolors,
.get = sd_getcolors,
},
{
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
.type = V4L2_CTRL_TYPE_MENU,
.name = "Light frequency filter",
.minimum = 1,
.maximum = 2, /* 0: 0, 1: 50Hz, 2:60Hz */
.step = 1,
#define FREQ_DEF 1
.default_value = FREQ_DEF,
},
.set = sd_setfreq,
.get = sd_getfreq,
},
};
static struct v4l2_pix_format vga_mode[] = {
{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 1},
{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0},
};
/* -- read a register -- */
static int reg_r(struct gspca_dev *gspca_dev,
__u16 index)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x00,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x00,
index,
gspca_dev->usb_buf, 1,
500);
if (ret < 0) {
PDEBUG(D_ERR, "reg_r err %d", ret);
return ret;
}
return gspca_dev->usb_buf[0];
}
/* -- write a register -- */
static int reg_w(struct gspca_dev *gspca_dev,
__u16 index, __u16 value)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x01,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
NULL,
0,
500);
if (ret < 0)
PDEBUG(D_ERR, "reg_w err %d", ret);
return ret;
}
/* -- get a bulk value (4 bytes) -- */
static int rcv_val(struct gspca_dev *gspca_dev,
int ads)
{
struct usb_device *dev = gspca_dev->dev;
int alen, ret;
reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
reg_w(gspca_dev, 0x636, ads & 0xff);
reg_w(gspca_dev, 0x637, 0);
reg_w(gspca_dev, 0x638, 4); /* len & 0xff */
reg_w(gspca_dev, 0x639, 0); /* len >> 8 */
reg_w(gspca_dev, 0x63a, 0);
reg_w(gspca_dev, 0x63b, 0);
reg_w(gspca_dev, 0x630, 5);
ret = usb_bulk_msg(dev,
usb_rcvbulkpipe(dev, 5),
gspca_dev->usb_buf,
4, /* length */
&alen,
500); /* timeout in milliseconds */
return ret;
}
/* -- send a bulk value -- */
static int snd_val(struct gspca_dev *gspca_dev,
int ads,
unsigned int val)
{
struct usb_device *dev = gspca_dev->dev;
int alen, ret;
__u8 seq = 0;
if (ads == 0x003f08) {
ret = reg_r(gspca_dev, 0x0704);
if (ret < 0)
goto ko;
ret = reg_r(gspca_dev, 0x0705);
if (ret < 0)
goto ko;
seq = ret; /* keep the sequence number */
ret = reg_r(gspca_dev, 0x0650);
if (ret < 0)
goto ko;
reg_w(gspca_dev, 0x654, seq);
} else {
reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
}
reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
reg_w(gspca_dev, 0x656, ads & 0xff);
reg_w(gspca_dev, 0x657, 0);
reg_w(gspca_dev, 0x658, 0x04); /* size */
reg_w(gspca_dev, 0x659, 0);
reg_w(gspca_dev, 0x65a, 0);
reg_w(gspca_dev, 0x65b, 0);
reg_w(gspca_dev, 0x650, 5);
gspca_dev->usb_buf[0] = val >> 24;
gspca_dev->usb_buf[1] = val >> 16;
gspca_dev->usb_buf[2] = val >> 8;
gspca_dev->usb_buf[3] = val;
ret = usb_bulk_msg(dev,
usb_sndbulkpipe(dev, 6),
gspca_dev->usb_buf,
4,
&alen,
500); /* timeout in milliseconds */
if (ret < 0)
goto ko;
if (ads == 0x003f08) {
seq += 4;
seq &= 0x3f;
reg_w(gspca_dev, 0x705, seq);
}
return ret;
ko:
PDEBUG(D_ERR, "snd_val err %d", ret);
return ret;
}
/* set a camera parameter */
static int set_par(struct gspca_dev *gspca_dev,
int parval)
{
return snd_val(gspca_dev, 0x003f08, parval);
}
static void setbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int parval;
parval = 0x06000000 /* whiteness */
+ (sd->brightness << 16);
set_par(gspca_dev, parval);
}
static void setcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int parval;
parval = 0x07000000 /* contrast */
+ (sd->contrast << 16);
set_par(gspca_dev, parval);
}
static void setcolors(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int parval;
parval = 0x08000000 /* saturation */
+ (sd->colors << 16);
set_par(gspca_dev, parval);
}
static void setfreq(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
set_par(gspca_dev, sd->lightfreq == 1
? 0x33640000 /* 50 Hz */
: 0x33780000); /* 60 Hz */
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam = &gspca_dev->cam;
cam->epaddr = 0x02;
gspca_dev->cam.cam_mode = vga_mode;
gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
sd->brightness = BRIGHTNESS_DEF;
sd->contrast = CONTRAST_DEF;
sd->colors = COLOR_DEF;
sd->lightfreq = FREQ_DEF;
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
int ret;
/* check if the device responds */
usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
ret = reg_r(gspca_dev, 0x0740);
if (ret < 0)
return ret;
if (ret != 0xff) {
PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", ret);
return -1;
}
return 0;
}
/* -- start the camera -- */
static void sd_start(struct gspca_dev *gspca_dev)
{
int ret, value;
/* work on alternate 1 */
usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
set_par(gspca_dev, 0x10000000);
set_par(gspca_dev, 0x00000000);
set_par(gspca_dev, 0x8002e001);
set_par(gspca_dev, 0x14000000);
if (gspca_dev->width > 320)
value = 0x8002e001; /* 640x480 */
else
value = 0x4001f000; /* 320x240 */
set_par(gspca_dev, value);
ret = usb_set_interface(gspca_dev->dev,
gspca_dev->iface,
gspca_dev->alt);
if (ret < 0) {
PDEBUG(D_ERR|D_STREAM, "set intf %d %d failed",
gspca_dev->iface, gspca_dev->alt);
goto out;
}
ret = reg_r(gspca_dev, 0x0630);
if (ret < 0)
goto out;
rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
ret = reg_r(gspca_dev, 0x0650);
if (ret < 0)
goto out;
snd_val(gspca_dev, 0x000020, 0xffffffff);
reg_w(gspca_dev, 0x0620, 0);
reg_w(gspca_dev, 0x0630, 0);
reg_w(gspca_dev, 0x0640, 0);
reg_w(gspca_dev, 0x0650, 0);
reg_w(gspca_dev, 0x0660, 0);
setbrightness(gspca_dev); /* whiteness */
setcontrast(gspca_dev); /* contrast */
setcolors(gspca_dev); /* saturation */
set_par(gspca_dev, 0x09800000); /* Red ? */
set_par(gspca_dev, 0x0a800000); /* Green ? */
set_par(gspca_dev, 0x0b800000); /* Blue ? */
set_par(gspca_dev, 0x0d030000); /* Gamma ? */
setfreq(gspca_dev); /* light frequency */
/* start the video flow */
set_par(gspca_dev, 0x01000000);
set_par(gspca_dev, 0x01000000);
PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
return;
out:
PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
struct usb_device *dev = gspca_dev->dev;
set_par(gspca_dev, 0x02000000);
set_par(gspca_dev, 0x02000000);
usb_set_interface(dev, gspca_dev->iface, 1);
reg_r(gspca_dev, 0x0630);
rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
reg_r(gspca_dev, 0x0650);
snd_val(gspca_dev, 0x000020, 0xffffffff);
reg_w(gspca_dev, 0x0620, 0);
reg_w(gspca_dev, 0x0630, 0);
reg_w(gspca_dev, 0x0640, 0);
reg_w(gspca_dev, 0x0650, 0);
reg_w(gspca_dev, 0x0660, 0);
PDEBUG(D_STREAM, "camera stopped");
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *data, /* isoc packet */
int len) /* iso packet length */
{
static unsigned char ffd9[] = {0xff, 0xd9};
/* a frame starts with:
* - 0xff 0xfe
* - 0x08 0x00 - length (little endian ?!)
* - 4 bytes = size of whole frame (BE - including header)
* - 0x00 0x0c
* - 0xff 0xd8
* - .. JPEG image with escape sequences (ff 00)
* (without ending - ff d9)
*/
if (data[0] == 0xff && data[1] == 0xfe) {
frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
ffd9, 2);
/* put the JPEG 411 header */
jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
/* beginning of the frame */
#define STKHDRSZ 12
gspca_frame_add(gspca_dev, INTER_PACKET, frame,
data + STKHDRSZ, len - STKHDRSZ);
#undef STKHDRSZ
return;
}
gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->brightness = val;
if (gspca_dev->streaming)
setbrightness(gspca_dev);
return 0;
}
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->brightness;
return 0;
}
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->contrast = val;
if (gspca_dev->streaming)
setcontrast(gspca_dev);
return 0;
}
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->contrast;
return 0;
}
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->colors = val;
if (gspca_dev->streaming)
setcolors(gspca_dev);
return 0;
}
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->colors;
return 0;
}
static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->lightfreq = val;
if (gspca_dev->streaming)
setfreq(gspca_dev);
return 0;
}
static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->lightfreq;
return 0;
}
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu)
{
switch (menu->id) {
case V4L2_CID_POWER_LINE_FREQUENCY:
switch (menu->index) {
case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
strcpy((char *) menu->name, "50 Hz");
return 0;
case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
strcpy((char *) menu->name, "60 Hz");
return 0;
}
break;
}
return -EINVAL;
}
/* 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,
.querymenu = sd_querymenu,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x05e1, 0x0893)},
{}
};
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;
info("registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
info("deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);
module_param_named(quant, sd_quant, int, 0644);
MODULE_PARM_DESC(quant, "Quantization index (0..8)");
