// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Syntek DV4000 (STK014) subdriver
*
* Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
*/
#define pr_fmt(fmt) KBUILD_MODNAME
": " fmt
#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" );
#define QUALITY
50
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev;
/* !! must be the first item */
u8 jpeg_hdr[JPEG_HDR_SZ];
};
static const 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 u8 reg_r(
struct gspca_dev *gspca_dev,
__u16 index)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
if (gspca_dev->usb_err <
0 )
return 0 ;
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev,
0 ),
0 x00,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0 x00,
index,
gspca_dev->usb_buf,
1 ,
500 );
if (ret <
0 ) {
pr_err(
"reg_r err %d\n" , ret);
gspca_dev->usb_err = ret;
return 0 ;
}
return gspca_dev->usb_buf[
0 ];
}
/* -- write a register -- */
static void reg_w(
struct gspca_dev *gspca_dev,
__u16 index, __u16 value)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
if (gspca_dev->usb_err <
0 )
return ;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev,
0 ),
0 x01,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
NULL,
0 ,
500 );
if (ret <
0 ) {
pr_err(
"reg_w err %d\n" , ret);
gspca_dev->usb_err = ret;
}
}
/* -- get a bulk value (4 bytes) -- */
static void rcv_val(
struct gspca_dev *gspca_dev,
int ads)
{
struct usb_device *dev = gspca_dev->dev;
int alen, ret;
reg_w(gspca_dev,
0 x634, (ads >>
16 ) &
0 xff);
reg_w(gspca_dev,
0 x635, (ads >>
8 ) &
0 xff);
reg_w(gspca_dev,
0 x636, ads &
0 xff);
reg_w(gspca_dev,
0 x637,
0 );
reg_w(gspca_dev,
0 x638,
4 );
/* len & 0xff */
reg_w(gspca_dev,
0 x639,
0 );
/* len >> 8 */
reg_w(gspca_dev,
0 x63a,
0 );
reg_w(gspca_dev,
0 x63b,
0 );
reg_w(gspca_dev,
0 x630,
5 );
if (gspca_dev->usb_err <
0 )
return ;
ret = usb_bulk_msg(dev,
usb_rcvbulkpipe(dev,
0 x05),
gspca_dev->usb_buf,
4 ,
/* length */
&alen,
500 );
/* timeout in milliseconds */
if (ret <
0 ) {
pr_err(
"rcv_val err %d\n" , ret);
gspca_dev->usb_err = ret;
}
}
/* -- send a bulk value -- */
static void 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 ==
0 x003f08) {
reg_r(gspca_dev,
0 x0704);
seq = reg_r(gspca_dev,
0 x0705);
reg_r(gspca_dev,
0 x0650);
reg_w(gspca_dev,
0 x654, seq);
}
else {
reg_w(gspca_dev,
0 x654, (ads >>
16 ) &
0 xff);
}
reg_w(gspca_dev,
0 x655, (ads >>
8 ) &
0 xff);
reg_w(gspca_dev,
0 x656, ads &
0 xff);
reg_w(gspca_dev,
0 x657,
0 );
reg_w(gspca_dev,
0 x658,
0 x04);
/* size */
reg_w(gspca_dev,
0 x659,
0 );
reg_w(gspca_dev,
0 x65a,
0 );
reg_w(gspca_dev,
0 x65b,
0 );
reg_w(gspca_dev,
0 x650,
5 );
if (gspca_dev->usb_err <
0 )
return ;
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 ) {
pr_err(
"snd_val err %d\n" , ret);
gspca_dev->usb_err = ret;
}
else {
if (ads ==
0 x003f08) {
seq +=
4 ;
seq &=
0 x3f;
reg_w(gspca_dev,
0 x705, seq);
}
}
}
/* set a camera parameter */
static void set_par(
struct gspca_dev *gspca_dev,
int parval)
{
snd_val(gspca_dev,
0 x003f08, parval);
}
static void setbrightness(
struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval =
0 x06000000
/* whiteness */
+ (val <<
16 );
set_par(gspca_dev, parval);
}
static void setcontrast(
struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval =
0 x07000000
/* contrast */
+ (val <<
16 );
set_par(gspca_dev, parval);
}
static void setcolors(
struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval =
0 x08000000
/* saturation */
+ (val <<
16 );
set_par(gspca_dev, parval);
}
static void setlightfreq(
struct gspca_dev *gspca_dev, s32 val)
{
set_par(gspca_dev, val ==
1
?
0 x33640000
/* 50 Hz */
:
0 x33780000);
/* 60 Hz */
}
/* this function is called at probe time */
static int sd_config(
struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
gspca_dev->cam.cam_mode = vga_mode;
gspca_dev->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)
{
u8 ret;
/* check if the device responds */
usb_set_interface(gspca_dev->dev, gspca_dev->iface,
1 );
ret = reg_r(gspca_dev,
0 x0740);
if (gspca_dev->usb_err >=
0 ) {
if (ret !=
0 xff) {
pr_err(
"init reg: 0x%02x\n" , ret);
gspca_dev->usb_err = -EIO;
}
}
return gspca_dev->usb_err;
}
/* -- start the camera -- */
static int sd_start(
struct gspca_dev *gspca_dev)
{
struct sd *sd = (
struct sd *) gspca_dev;
int ret, value;
/* create the JPEG header */
jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
gspca_dev->pixfmt.width,
0 x22);
/* JPEG 411 */
jpeg_set_qual(sd->jpeg_hdr, QUALITY);
/* work on alternate 1 */
usb_set_interface(gspca_dev->dev, gspca_dev->iface,
1 );
set_par(gspca_dev,
0 x10000000);
set_par(gspca_dev,
0 x00000000);
set_par(gspca_dev,
0 x8002e001);
set_par(gspca_dev,
0 x14000000);
if (gspca_dev->pixfmt.width >
320 )
value =
0 x8002e001;
/* 640x480 */
else
value =
0 x4001f000;
/* 320x240 */
set_par(gspca_dev, value);
ret = usb_set_interface(gspca_dev->dev,
gspca_dev->iface,
gspca_dev->alt);
if (ret <
0 ) {
pr_err(
"set intf %d %d failed\n" ,
gspca_dev->iface, gspca_dev->alt);
gspca_dev->usb_err = ret;
goto out;
}
reg_r(gspca_dev,
0 x0630);
rcv_val(gspca_dev,
0 x000020);
/* << (value ff ff ff ff) */
reg_r(gspca_dev,
0 x0650);
snd_val(gspca_dev,
0 x000020,
0 xffffffff);
reg_w(gspca_dev,
0 x0620,
0 );
reg_w(gspca_dev,
0 x0630,
0 );
reg_w(gspca_dev,
0 x0640,
0 );
reg_w(gspca_dev,
0 x0650,
0 );
reg_w(gspca_dev,
0 x0660,
0 );
set_par(gspca_dev,
0 x09800000);
/* Red ? */
set_par(gspca_dev,
0 x0a800000);
/* Green ? */
set_par(gspca_dev,
0 x0b800000);
/* Blue ? */
set_par(gspca_dev,
0 x0d030000);
/* Gamma ? */
/* start the video flow */
set_par(gspca_dev,
0 x01000000);
set_par(gspca_dev,
0 x01000000);
if (gspca_dev->usb_err >=
0 )
gspca_dbg(gspca_dev, D_STREAM,
"camera started alt: 0x%02x\n" ,
gspca_dev->alt);
out:
return gspca_dev->usb_err;
}
static void sd_stopN(
struct gspca_dev *gspca_dev)
{
struct usb_device *dev = gspca_dev->dev;
set_par(gspca_dev,
0 x02000000);
set_par(gspca_dev,
0 x02000000);
usb_set_interface(dev, gspca_dev->iface,
1 );
reg_r(gspca_dev,
0 x0630);
rcv_val(gspca_dev,
0 x000020);
/* << (value ff ff ff ff) */
reg_r(gspca_dev,
0 x0650);
snd_val(gspca_dev,
0 x000020,
0 xffffffff);
reg_w(gspca_dev,
0 x0620,
0 );
reg_w(gspca_dev,
0 x0630,
0 );
reg_w(gspca_dev,
0 x0640,
0 );
reg_w(gspca_dev,
0 x0650,
0 );
reg_w(gspca_dev,
0 x0660,
0 );
gspca_dbg(gspca_dev, D_STREAM,
"camera stopped\n" );
}
static void sd_pkt_scan(
struct gspca_dev *gspca_dev,
u8 *data,
/* isoc packet */
int len)
/* iso packet length */
{
struct sd *sd = (
struct sd *) gspca_dev;
static unsigned char ffd9[] = {
0 xff,
0 xd9};
/* 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 ] ==
0 xff && data[
1 ] ==
0 xfe) {
gspca_frame_add(gspca_dev, LAST_PACKET,
ffd9,
2 );
/* put the JPEG 411 header */
gspca_frame_add(gspca_dev, FIRST_PACKET,
sd->jpeg_hdr, JPEG_HDR_SZ);
/* beginning of the frame */
#define STKHDRSZ
12
data += STKHDRSZ;
len -= STKHDRSZ;
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
static int sd_s_ctrl(
struct v4l2_ctrl *ctrl)
{
struct gspca_dev *gspca_dev =
container_of(ctrl->handler,
struct gspca_dev, ctrl_handler);
gspca_dev->usb_err =
0 ;
if (!gspca_dev->streaming)
return 0 ;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
setbrightness(gspca_dev, ctrl->val);
break ;
case V4L2_CID_CONTRAST:
setcontrast(gspca_dev, ctrl->val);
break ;
case V4L2_CID_SATURATION:
setcolors(gspca_dev, ctrl->val);
break ;
case V4L2_CID_POWER_LINE_FREQUENCY:
setlightfreq(gspca_dev, ctrl->val);
break ;
}
return gspca_dev->usb_err;
}
static const struct v4l2_ctrl_ops sd_ctrl_ops = {
.s_ctrl = sd_s_ctrl,
};
static int sd_init_controls(
struct gspca_dev *gspca_dev)
{
struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
gspca_dev->vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_init(hdl,
4 );
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_BRIGHTNESS,
0 ,
255 ,
1 ,
127 );
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_CONTRAST,
0 ,
255 ,
1 ,
127 );
v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_SATURATION,
0 ,
255 ,
1 ,
127 );
v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
1 ,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
if (hdl->error) {
pr_err(
"Could not initialize controls\n" );
return hdl->error;
}
return 0 ;
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.config = sd_config,
.init = sd_init,
.init_controls = sd_init_controls,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(
0 x05e1,
0 x0893)},
{}
};
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);
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