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linux/drivers/media/usb/gspca/stk014.c
Thomas Gleixner fd9871f70c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 24 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 50 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154042.917228456@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:52:39 +02:00

435 lines
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// 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),
0x00,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x00,
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),
0x01,
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, 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);
if (gspca_dev->usb_err < 0)
return;
ret = usb_bulk_msg(dev,
usb_rcvbulkpipe(dev, 0x05),
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 == 0x003f08) {
reg_r(gspca_dev, 0x0704);
seq = reg_r(gspca_dev, 0x0705);
reg_r(gspca_dev, 0x0650);
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);
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 == 0x003f08) {
seq += 4;
seq &= 0x3f;
reg_w(gspca_dev, 0x705, seq);
}
}
}
/* set a camera parameter */
static void set_par(struct gspca_dev *gspca_dev,
int parval)
{
snd_val(gspca_dev, 0x003f08, parval);
}
static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval = 0x06000000 /* whiteness */
+ (val << 16);
set_par(gspca_dev, parval);
}
static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval = 0x07000000 /* contrast */
+ (val << 16);
set_par(gspca_dev, parval);
}
static void setcolors(struct gspca_dev *gspca_dev, s32 val)
{
int parval;
parval = 0x08000000 /* saturation */
+ (val << 16);
set_par(gspca_dev, parval);
}
static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
{
set_par(gspca_dev, val == 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)
{
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, 0x0740);
if (gspca_dev->usb_err >= 0) {
if (ret != 0xff) {
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,
0x22); /* 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, 0x10000000);
set_par(gspca_dev, 0x00000000);
set_par(gspca_dev, 0x8002e001);
set_par(gspca_dev, 0x14000000);
if (gspca_dev->pixfmt.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) {
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, 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);
set_par(gspca_dev, 0x09800000); /* Red ? */
set_par(gspca_dev, 0x0a800000); /* Green ? */
set_par(gspca_dev, 0x0b800000); /* Blue ? */
set_par(gspca_dev, 0x0d030000); /* Gamma ? */
/* start the video flow */
set_par(gspca_dev, 0x01000000);
set_par(gspca_dev, 0x01000000);
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, 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);
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[] = {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) {
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(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,
.reset_resume = gspca_resume,
#endif
};
module_usb_driver(sd_driver);
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