// SPDX-License-Identifier: GPL-2.0-or-later
/*
* kinect sensor device camera, gspca driver
*
* Copyright (C) 2011 Antonio Ospite <ospite@studenti.unina.it>
*
* Based on the OpenKinect project and libfreenect
* http://openkinect.org/wiki/Init_Analysis
*
* Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect
* sensor device which I tested the driver on.
*/
#define pr_fmt(fmt) KBUILD_MODNAME
": " fmt
#define MODULE_NAME
"kinect"
#include "gspca.h"
#define CTRL_TIMEOUT
500
MODULE_AUTHOR(
"Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION(
"GSPCA/Kinect Sensor Device USB Camera Driver");
MODULE_LICENSE(
"GPL");
static bool depth_mode;
struct pkt_hdr {
uint8_t magic[
2];
uint8_t pad;
uint8_t flag;
uint8_t unk1;
uint8_t seq;
uint8_t unk2;
uint8_t unk3;
uint32_t timestamp;
};
struct cam_hdr {
uint8_t magic[
2];
__le16 len;
__le16 cmd;
__le16 tag;
};
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev;
/* !! must be the first item */
uint16_t cam_tag;
/* a sequence number for packets */
uint8_t stream_flag;
/* to identify different stream types */
uint8_t obuf[
0x400];
/* output buffer for control commands */
uint8_t ibuf[
0x200];
/* input buffer for control commands */
};
#define MODE_640x480
0x0001
#define MODE_640x488
0x0002
#define MODE_1280x1024
0x0004
#define FORMAT_BAYER
0x0010
#define FORMAT_UYVY
0x0020
#define FORMAT_Y10B
0x0040
#define FPS_HIGH
0x0100
static const struct v4l2_pix_format depth_camera_mode[] = {
{
640,
480, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
.bytesperline =
640 *
10 /
8,
.sizeimage =
640 *
480 *
10 /
8,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_640x488 | FORMAT_Y10B},
};
static const struct v4l2_pix_format video_camera_mode[] = {
{
640,
480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
.bytesperline =
640,
.sizeimage =
640 *
480,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_640x480 | FORMAT_BAYER | FPS_HIGH},
{
640,
480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
.bytesperline =
640 *
2,
.sizeimage =
640 *
480 *
2,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_640x480 | FORMAT_UYVY},
{
1280,
1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
.bytesperline =
1280,
.sizeimage =
1280 *
1024,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_1280x1024 | FORMAT_BAYER},
{
640,
488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
.bytesperline =
640 *
10 /
8,
.sizeimage =
640 *
488 *
10 /
8,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_640x488 | FORMAT_Y10B | FPS_HIGH},
{
1280,
1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
.bytesperline =
1280 *
10 /
8,
.sizeimage =
1280 *
1024 *
10 /
8,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = MODE_1280x1024 | FORMAT_Y10B},
};
static int kinect_write(
struct usb_device *udev, uint8_t *data,
uint16_t wLength)
{
return usb_control_msg(udev,
usb_sndctrlpipe(udev,
0),
0x00,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0,
0, data, wLength, CTRL_TIMEOUT);
}
static int kinect_read(
struct usb_device *udev, uint8_t *data, uint16_t wLength)
{
return usb_control_msg(udev,
usb_rcvctrlpipe(udev,
0),
0x00,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0,
0, data, wLength, CTRL_TIMEOUT);
}
static int send_cmd(
struct gspca_dev *gspca_dev, uint16_t cmd,
void *cmdbuf,
unsigned int cmd_len,
void *replybuf,
unsigned int reply_len)
{
struct sd *sd = (
struct sd *) gspca_dev;
struct usb_device *udev = gspca_dev->dev;
int res, actual_len;
uint8_t *obuf = sd->obuf;
uint8_t *ibuf = sd->ibuf;
struct cam_hdr *chdr = (
void *)obuf;
struct cam_hdr *rhdr = (
void *)ibuf;
if (cmd_len &
1 || cmd_len > (
0x400 -
sizeof(*chdr))) {
pr_err(
"send_cmd: Invalid command length (0x%x)\n", cmd_len);
return -
1;
}
chdr->magic[
0] =
0x47;
chdr->magic[
1] =
0x4d;
chdr->cmd = cpu_to_le16(cmd);
chdr->tag = cpu_to_le16(sd->cam_tag);
chdr->len = cpu_to_le16(cmd_len /
2);
memcpy(obuf+
sizeof(*chdr), cmdbuf, cmd_len);
res = kinect_write(udev, obuf, cmd_len +
sizeof(*chdr));
gspca_dbg(gspca_dev, D_USBO,
"Control cmd=%04x tag=%04x len=%04x: %d\n",
cmd,
sd->cam_tag, cmd_len, res);
if (res <
0) {
pr_err(
"send_cmd: Output control transfer failed (%d)\n", res);
return res;
}
do {
actual_len = kinect_read(udev, ibuf,
0x200);
}
while (actual_len ==
0);
gspca_dbg(gspca_dev, D_USBO,
"Control reply: %d\n", actual_len);
if (actual_len < (
int)
sizeof(*rhdr)) {
pr_err(
"send_cmd: Input control transfer failed (%d)\n",
actual_len);
return actual_len <
0 ? actual_len : -EREMOTEIO;
}
actual_len -=
sizeof(*rhdr);
if (rhdr->magic[
0] !=
0x52 || rhdr->magic[
1] !=
0x42) {
pr_err(
"send_cmd: Bad magic %02x %02x\n",
rhdr->magic[
0], rhdr->magic[
1]);
return -
1;
}
if (rhdr->cmd != chdr->cmd) {
pr_err(
"send_cmd: Bad cmd %02x != %02x\n",
rhdr->cmd, chdr->cmd);
return -
1;
}
if (rhdr->tag != chdr->tag) {
pr_err(
"send_cmd: Bad tag %04x != %04x\n",
rhdr->tag, chdr->tag);
return -
1;
}
if (le16_to_cpu(rhdr->len) != (actual_len/
2)) {
pr_err(
"send_cmd: Bad len %04x != %04x\n",
le16_to_cpu(rhdr->len), (
int)(actual_len/
2));
return -
1;
}
if (actual_len > reply_len) {
pr_warn(
"send_cmd: Data buffer is %d bytes long, but got %d bytes\n",
reply_len, actual_len);
memcpy(replybuf, ibuf+
sizeof(*rhdr), reply_len);
}
else {
memcpy(replybuf, ibuf+
sizeof(*rhdr), actual_len);
}
sd->cam_tag++;
return actual_len;
}
static int write_register(
struct gspca_dev *gspca_dev, uint16_t reg,
uint16_t data)
{
uint16_t reply[
2];
__le16 cmd[
2];
int res;
cmd[
0] = cpu_to_le16(reg);
cmd[
1] = cpu_to_le16(data);
gspca_dbg(gspca_dev, D_USBO,
"Write Reg 0x%04x <= 0x%02x\n", reg, data);
res = send_cmd(gspca_dev,
0x03, cmd,
4, reply,
4);
if (res <
0)
return res;
if (res !=
2) {
pr_warn(
"send_cmd returned %d [%04x %04x], 0000 expected\n",
res, reply[
0], reply[
1]);
}
return 0;
}
/* this function is called at probe time */
static int sd_config_video(
struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (
struct sd *) gspca_dev;
struct cam *cam;
sd->cam_tag =
0;
sd->stream_flag =
0x80;
cam = &gspca_dev->cam;
cam->cam_mode = video_camera_mode;
cam->nmodes = ARRAY_SIZE(video_camera_mode);
gspca_dev->xfer_ep =
0x81;
#if 0
/* Setting those values is not needed for video stream */
cam->npkt =
15;
gspca_dev->pkt_size =
960 *
2;
#endif
return 0;
}
static int sd_config_depth(
struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (
struct sd *) gspca_dev;
struct cam *cam;
sd->cam_tag =
0;
sd->stream_flag =
0x70;
cam = &gspca_dev->cam;
cam->cam_mode = depth_camera_mode;
cam->nmodes = ARRAY_SIZE(depth_camera_mode);
gspca_dev->xfer_ep =
0x82;
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(
struct gspca_dev *gspca_dev)
{
gspca_dbg(gspca_dev, D_PROBE,
"Kinect Camera device.\n");
return 0;
}
static int sd_start_video(
struct gspca_dev *gspca_dev)
{
int mode;
uint8_t fmt_reg, fmt_val;
uint8_t res_reg, res_val;
uint8_t fps_reg, fps_val;
uint8_t mode_val;
mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
if (mode & FORMAT_Y10B) {
fmt_reg =
0x19;
res_reg =
0x1a;
fps_reg =
0x1b;
mode_val =
0x03;
}
else {
fmt_reg =
0x0c;
res_reg =
0x0d;
fps_reg =
0x0e;
mode_val =
0x01;
}
/* format */
if (mode & FORMAT_UYVY)
fmt_val =
0x05;
else
fmt_val =
0x00;
if (mode & MODE_1280x1024)
res_val =
0x02;
else
res_val =
0x01;
if (mode & FPS_HIGH)
fps_val =
0x1e;
else
fps_val =
0x0f;
/* turn off IR-reset function */
write_register(gspca_dev,
0x105,
0x00);
/* Reset video stream */
write_register(gspca_dev,
0x05,
0x00);
/* Due to some ridiculous condition in the firmware, we have to start
* and stop the depth stream before the camera will hand us 1280x1024
* IR. This is a stupid workaround, but we've yet to find a better
* solution.
*
* Thanks to Drew Fisher for figuring this out.
*/
if (mode & (FORMAT_Y10B | MODE_1280x1024)) {
write_register(gspca_dev,
0x13,
0x01);
write_register(gspca_dev,
0x14,
0x1e);
write_register(gspca_dev,
0x06,
0x02);
write_register(gspca_dev,
0x06,
0x00);
}
write_register(gspca_dev, fmt_reg, fmt_val);
write_register(gspca_dev, res_reg, res_val);
write_register(gspca_dev, fps_reg, fps_val);
/* Start video stream */
write_register(gspca_dev,
0x05, mode_val);
/* disable Hflip */
write_register(gspca_dev,
0x47,
0x00);
return 0;
}
static int sd_start_depth(
struct gspca_dev *gspca_dev)
{
/* turn off IR-reset function */
write_register(gspca_dev,
0x105,
0x00);
/* reset depth stream */
write_register(gspca_dev,
0x06,
0x00);
/* Depth Stream Format 0x03: 11 bit stream | 0x02: 10 bit */
write_register(gspca_dev,
0x12,
0x02);
/* Depth Stream Resolution 1: standard (640x480) */
write_register(gspca_dev,
0x13,
0x01);
/* Depth Framerate / 0x1e (30): 30 fps */
write_register(gspca_dev,
0x14,
0x1e);
/* Depth Stream Control / 2: Open Depth Stream */
write_register(gspca_dev,
0x06,
0x02);
/* disable depth hflip / LSB = 0: Smoothing Disabled */
write_register(gspca_dev,
0x17,
0x00);
return 0;
}
static void sd_stopN_video(
struct gspca_dev *gspca_dev)
{
/* reset video stream */
write_register(gspca_dev,
0x05,
0x00);
}
static void sd_stopN_depth(
struct gspca_dev *gspca_dev)
{
/* reset depth stream */
write_register(gspca_dev,
0x06,
0x00);
}
static void sd_pkt_scan(
struct gspca_dev *gspca_dev, u8 *__data,
int len)
{
struct sd *sd = (
struct sd *) gspca_dev;
struct pkt_hdr *hdr = (
void *)__data;
uint8_t *data = __data +
sizeof(*hdr);
int datalen = len -
sizeof(*hdr);
uint8_t sof = sd->stream_flag |
1;
uint8_t mof = sd->stream_flag |
2;
uint8_t eof = sd->stream_flag |
5;
if (len <
12)
return;
if (hdr->magic[
0] !=
'R' || hdr->magic[
1] !=
'B') {
pr_warn(
"[Stream %02x] Invalid magic %02x%02x\n",
sd->stream_flag, hdr->magic[
0], hdr->magic[
1]);
return;
}
if (hdr->flag == sof)
gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen);
else if (hdr->flag == mof)
gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);
else if (hdr->flag == eof)
gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
else
pr_warn(
"Packet type not recognized...\n");
}
/* sub-driver description */
static const struct sd_desc sd_desc_video = {
.name = MODULE_NAME,
.config = sd_config_video,
.init = sd_init,
.start = sd_start_video,
.stopN = sd_stopN_video,
.pkt_scan = sd_pkt_scan,
/*
.get_streamparm = sd_get_streamparm,
.set_streamparm = sd_set_streamparm,
*/
};
static const struct sd_desc sd_desc_depth = {
.name = MODULE_NAME,
.config = sd_config_depth,
.init = sd_init,
.start = sd_start_depth,
.stopN = sd_stopN_depth,
.pkt_scan = sd_pkt_scan,
/*
.get_streamparm = sd_get_streamparm,
.set_streamparm = sd_set_streamparm,
*/
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(
0x045e,
0x02ae)},
{USB_DEVICE(
0x045e,
0x02bf)},
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(
struct usb_interface *intf,
const struct usb_device_id *id)
{
if (depth_mode)
return gspca_dev_probe(intf, id, &sd_desc_depth,
sizeof(
struct sd), THIS_MODULE);
else
return gspca_dev_probe(intf, id, &sd_desc_video,
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);
module_param(depth_mode,
bool,
0644);
MODULE_PARM_DESC(depth_mode,
"0=video 1=depth");