microsoft
/
WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/usb/media/ultracam.c

680 строки
21 KiB
C
Исходник Ответственный История

/*
* USB NB Camera driver
*
* HISTORY:
* 25-Dec-2002 Dmitri Removed lighting, sharpness parameters, methods.
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/init.h>
#include "usbvideo.h"
#define ULTRACAM_VENDOR_ID 0x0461
#define ULTRACAM_PRODUCT_ID 0x0813
#define MAX_CAMERAS 4 /* How many devices we allow to connect */
/*
* This structure lives in uvd_t->user field.
*/
typedef struct {
int initialized; /* Had we already sent init sequence? */
int camera_model; /* What type of IBM camera we got? */
int has_hdr;
} ultracam_t;
#define ULTRACAM_T(uvd) ((ultracam_t *)((uvd)->user_data))
static struct usbvideo *cams = NULL;
static int debug = 0;
static int flags = 0; /* FLAGS_DISPLAY_HINTS | FLAGS_OVERLAY_STATS; */
static const int min_canvasWidth = 8;
static const int min_canvasHeight = 4;
#define FRAMERATE_MIN 0
#define FRAMERATE_MAX 6
static int framerate = -1;
/*
* Here we define several initialization variables. They may
* be used to automatically set color, hue, brightness and
* contrast to desired values. This is particularly useful in
* case of webcams (which have no controls and no on-screen
* output) and also when a client V4L software is used that
* does not have some of those controls. In any case it's
* good to have startup values as options.
*
* These values are all in [0..255] range. This simplifies
* operation. Note that actual values of V4L variables may
* be scaled up (as much as << 8). User can see that only
* on overlay output, however, or through a V4L client.
*/
static int init_brightness = 128;
static int init_contrast = 192;
static int init_color = 128;
static int init_hue = 128;
static int hue_correction = 128;
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
module_param(flags, int, 0);
MODULE_PARM_DESC(flags,
"Bitfield: 0=VIDIOCSYNC, "
"1=B/W, "
"2=show hints, "
"3=show stats, "
"4=test pattern, "
"5=separate frames, "
"6=clean frames");
module_param(framerate, int, 0);
MODULE_PARM_DESC(framerate, "Framerate setting: 0=slowest, 6=fastest (default=2)");
module_param(init_brightness, int, 0);
MODULE_PARM_DESC(init_brightness, "Brightness preconfiguration: 0-255 (default=128)");
module_param(init_contrast, int, 0);
MODULE_PARM_DESC(init_contrast, "Contrast preconfiguration: 0-255 (default=192)");
module_param(init_color, int, 0);
MODULE_PARM_DESC(init_color, "Color preconfiguration: 0-255 (default=128)");
module_param(init_hue, int, 0);
MODULE_PARM_DESC(init_hue, "Hue preconfiguration: 0-255 (default=128)");
module_param(hue_correction, int, 0);
MODULE_PARM_DESC(hue_correction, "YUV colorspace regulation: 0-255 (default=128)");
/*
* ultracam_ProcessIsocData()
*
* Generic routine to parse the ring queue data. It employs either
* ultracam_find_header() or ultracam_parse_lines() to do most
* of work.
*
* 02-Nov-2000 First (mostly dummy) version.
* 06-Nov-2000 Rewrote to dump all data into frame.
*/
static void ultracam_ProcessIsocData(struct uvd *uvd, struct usbvideo_frame *frame)
{
int n;
assert(uvd != NULL);
assert(frame != NULL);
/* Try to move data from queue into frame buffer */
n = RingQueue_GetLength(&uvd->dp);
if (n > 0) {
int m;
/* See how much spare we have left */
m = uvd->max_frame_size - frame->seqRead_Length;
if (n > m)
n = m;
/* Now move that much data into frame buffer */
RingQueue_Dequeue(
&uvd->dp,
frame->data + frame->seqRead_Length,
m);
frame->seqRead_Length += m;
}
/* See if we filled the frame */
if (frame->seqRead_Length >= uvd->max_frame_size) {
frame->frameState = FrameState_Done;
uvd->curframe = -1;
uvd->stats.frame_num++;
}
}
/*
* ultracam_veio()
*
* History:
* 1/27/00 Added check for dev == NULL; this happens if camera is unplugged.
*/
static int ultracam_veio(
struct uvd *uvd,
unsigned char req,
unsigned short value,
unsigned short index,
int is_out)
{
static const char proc[] = "ultracam_veio";
unsigned char cp[8] /* = { 0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef } */;
int i;
if (!CAMERA_IS_OPERATIONAL(uvd))
return 0;
if (!is_out) {
i = usb_control_msg(
uvd->dev,
usb_rcvctrlpipe(uvd->dev, 0),
req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
cp,
sizeof(cp),
1000);
#if 1
info("USB => %02x%02x%02x%02x%02x%02x%02x%02x "
"(req=$%02x val=$%04x ind=$%04x)",
cp[0],cp[1],cp[2],cp[3],cp[4],cp[5],cp[6],cp[7],
req, value, index);
#endif
} else {
i = usb_control_msg(
uvd->dev,
usb_sndctrlpipe(uvd->dev, 0),
req,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
NULL,
0,
1000);
}
if (i < 0) {
err("%s: ERROR=%d. Camera stopped; Reconnect or reload driver.",
proc, i);
uvd->last_error = i;
}
return i;
}
/*
* ultracam_calculate_fps()
*/
static int ultracam_calculate_fps(struct uvd *uvd)
{
return 3 + framerate*4 + framerate/2;
}
/*
* ultracam_adjust_contrast()
*/
static void ultracam_adjust_contrast(struct uvd *uvd)
{
}
/*
* ultracam_set_brightness()
*
* This procedure changes brightness of the picture.
*/
static void ultracam_set_brightness(struct uvd *uvd)
{
}
static void ultracam_set_hue(struct uvd *uvd)
{
}
/*
* ultracam_adjust_picture()
*
* This procedure gets called from V4L interface to update picture settings.
* Here we change brightness and contrast.
*/
static void ultracam_adjust_picture(struct uvd *uvd)
{
ultracam_adjust_contrast(uvd);
ultracam_set_brightness(uvd);
ultracam_set_hue(uvd);
}
/*
* ultracam_video_stop()
*
* This code tells camera to stop streaming. The interface remains
* configured and bandwidth - claimed.
*/
static void ultracam_video_stop(struct uvd *uvd)
{
}
/*
* ultracam_reinit_iso()
*
* This procedure sends couple of commands to the camera and then
* resets the video pipe. This sequence was observed to reinit the
* camera or, at least, to initiate ISO data stream.
*/
static void ultracam_reinit_iso(struct uvd *uvd, int do_stop)
{
}
static void ultracam_video_start(struct uvd *uvd)
{
ultracam_reinit_iso(uvd, 0);
}
static int ultracam_resetPipe(struct uvd *uvd)
{
usb_clear_halt(uvd->dev, uvd->video_endp);
return 0;
}
static int ultracam_alternateSetting(struct uvd *uvd, int setting)
{
static const char proc[] = "ultracam_alternateSetting";
int i;
i = usb_set_interface(uvd->dev, uvd->iface, setting);
if (i < 0) {
err("%s: usb_set_interface error", proc);
uvd->last_error = i;
return -EBUSY;
}
return 0;
}
/*
* Return negative code on failure, 0 on success.
*/
static int ultracam_setup_on_open(struct uvd *uvd)
{
int setup_ok = 0; /* Success by default */
/* Send init sequence only once, it's large! */
if (!ULTRACAM_T(uvd)->initialized) {
ultracam_alternateSetting(uvd, 0x04);
ultracam_alternateSetting(uvd, 0x00);
ultracam_veio(uvd, 0x02, 0x0004, 0x000b, 1);
ultracam_veio(uvd, 0x02, 0x0001, 0x0005, 1);
ultracam_veio(uvd, 0x02, 0x8000, 0x0000, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0000, 1);
ultracam_veio(uvd, 0x00, 0x00b0, 0x0001, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0002, 1);
ultracam_veio(uvd, 0x00, 0x000c, 0x0003, 1);
ultracam_veio(uvd, 0x00, 0x000b, 0x0004, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0005, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0006, 1);
ultracam_veio(uvd, 0x00, 0x0079, 0x0007, 1);
ultracam_veio(uvd, 0x00, 0x003b, 0x0008, 1);
ultracam_veio(uvd, 0x00, 0x0002, 0x000f, 1);
ultracam_veio(uvd, 0x00, 0x0001, 0x0010, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0011, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00bf, 1);
ultracam_veio(uvd, 0x00, 0x0001, 0x00c0, 1);
ultracam_veio(uvd, 0x00, 0x0010, 0x00cb, 1);
ultracam_veio(uvd, 0x01, 0x00a4, 0x0001, 1);
ultracam_veio(uvd, 0x01, 0x0010, 0x0002, 1);
ultracam_veio(uvd, 0x01, 0x0066, 0x0007, 1);
ultracam_veio(uvd, 0x01, 0x000b, 0x0008, 1);
ultracam_veio(uvd, 0x01, 0x0034, 0x0009, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 1);
ultracam_veio(uvd, 0x01, 0x002e, 0x000b, 1);
ultracam_veio(uvd, 0x01, 0x00d6, 0x000c, 1);
ultracam_veio(uvd, 0x01, 0x00fc, 0x000d, 1);
ultracam_veio(uvd, 0x01, 0x00f1, 0x000e, 1);
ultracam_veio(uvd, 0x01, 0x00da, 0x000f, 1);
ultracam_veio(uvd, 0x01, 0x0036, 0x0010, 1);
ultracam_veio(uvd, 0x01, 0x000b, 0x0011, 1);
ultracam_veio(uvd, 0x01, 0x0001, 0x0012, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0013, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0014, 1);
ultracam_veio(uvd, 0x01, 0x0087, 0x0051, 1);
ultracam_veio(uvd, 0x01, 0x0040, 0x0052, 1);
ultracam_veio(uvd, 0x01, 0x0058, 0x0053, 1);
ultracam_veio(uvd, 0x01, 0x0040, 0x0054, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0040, 1);
ultracam_veio(uvd, 0x01, 0x0010, 0x0041, 1);
ultracam_veio(uvd, 0x01, 0x0020, 0x0042, 1);
ultracam_veio(uvd, 0x01, 0x0030, 0x0043, 1);
ultracam_veio(uvd, 0x01, 0x0040, 0x0044, 1);
ultracam_veio(uvd, 0x01, 0x0050, 0x0045, 1);
ultracam_veio(uvd, 0x01, 0x0060, 0x0046, 1);
ultracam_veio(uvd, 0x01, 0x0070, 0x0047, 1);
ultracam_veio(uvd, 0x01, 0x0080, 0x0048, 1);
ultracam_veio(uvd, 0x01, 0x0090, 0x0049, 1);
ultracam_veio(uvd, 0x01, 0x00a0, 0x004a, 1);
ultracam_veio(uvd, 0x01, 0x00b0, 0x004b, 1);
ultracam_veio(uvd, 0x01, 0x00c0, 0x004c, 1);
ultracam_veio(uvd, 0x01, 0x00d0, 0x004d, 1);
ultracam_veio(uvd, 0x01, 0x00e0, 0x004e, 1);
ultracam_veio(uvd, 0x01, 0x00f0, 0x004f, 1);
ultracam_veio(uvd, 0x01, 0x00ff, 0x0050, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0056, 1);
ultracam_veio(uvd, 0x00, 0x0080, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0080, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0004, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0002, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0020, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0040, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0017, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1);
ultracam_veio(uvd, 0x00, 0x00c0, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_veio(uvd, 0x02, 0xc040, 0x0001, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0008, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x0009, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000b, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000c, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000d, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000e, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x000f, 0);
ultracam_veio(uvd, 0x01, 0x0000, 0x0010, 0);
ultracam_veio(uvd, 0x01, 0x000b, 0x0008, 1);
ultracam_veio(uvd, 0x01, 0x0034, 0x0009, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 1);
ultracam_veio(uvd, 0x01, 0x002e, 0x000b, 1);
ultracam_veio(uvd, 0x01, 0x00d6, 0x000c, 1);
ultracam_veio(uvd, 0x01, 0x00fc, 0x000d, 1);
ultracam_veio(uvd, 0x01, 0x00f1, 0x000e, 1);
ultracam_veio(uvd, 0x01, 0x00da, 0x000f, 1);
ultracam_veio(uvd, 0x01, 0x0036, 0x0010, 1);
ultracam_veio(uvd, 0x01, 0x0000, 0x0001, 0);
ultracam_veio(uvd, 0x01, 0x0064, 0x0001, 1);
ultracam_veio(uvd, 0x01, 0x0059, 0x0051, 1);
ultracam_veio(uvd, 0x01, 0x003f, 0x0052, 1);
ultracam_veio(uvd, 0x01, 0x0094, 0x0053, 1);
ultracam_veio(uvd, 0x01, 0x00ff, 0x0011, 1);
ultracam_veio(uvd, 0x01, 0x0003, 0x0012, 1);
ultracam_veio(uvd, 0x01, 0x00f7, 0x0013, 1);
ultracam_veio(uvd, 0x00, 0x0009, 0x0011, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0001, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x0000, 1);
ultracam_veio(uvd, 0x00, 0x0020, 0x00c1, 1);
ultracam_veio(uvd, 0x00, 0x0010, 0x00c2, 1);
ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1);
ultracam_alternateSetting(uvd, 0x04);
ultracam_veio(uvd, 0x02, 0x0000, 0x0001, 1);
ultracam_veio(uvd, 0x02, 0x0000, 0x0001, 1);
ultracam_veio(uvd, 0x02, 0x0000, 0x0006, 1);
ultracam_veio(uvd, 0x02, 0x9000, 0x0007, 1);
ultracam_veio(uvd, 0x02, 0x0042, 0x0001, 1);
ultracam_veio(uvd, 0x02, 0x0000, 0x000b, 0);
ultracam_resetPipe(uvd);
ULTRACAM_T(uvd)->initialized = (setup_ok != 0);
}
return setup_ok;
}
static void ultracam_configure_video(struct uvd *uvd)
{
if (uvd == NULL)
return;
RESTRICT_TO_RANGE(init_brightness, 0, 255);
RESTRICT_TO_RANGE(init_contrast, 0, 255);
RESTRICT_TO_RANGE(init_color, 0, 255);
RESTRICT_TO_RANGE(init_hue, 0, 255);
RESTRICT_TO_RANGE(hue_correction, 0, 255);
memset(&uvd->vpic, 0, sizeof(uvd->vpic));
memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
uvd->vpic.colour = init_color << 8;
uvd->vpic.hue = init_hue << 8;
uvd->vpic.brightness = init_brightness << 8;
uvd->vpic.contrast = init_contrast << 8;
uvd->vpic.whiteness = 105 << 8; /* This one isn't used */
uvd->vpic.depth = 24;
uvd->vpic.palette = VIDEO_PALETTE_RGB24;
memset(&uvd->vcap, 0, sizeof(uvd->vcap));
strcpy(uvd->vcap.name, "IBM Ultra Camera");
uvd->vcap.type = VID_TYPE_CAPTURE;
uvd->vcap.channels = 1;
uvd->vcap.audios = 0;
uvd->vcap.maxwidth = VIDEOSIZE_X(uvd->canvas);
uvd->vcap.maxheight = VIDEOSIZE_Y(uvd->canvas);
uvd->vcap.minwidth = min_canvasWidth;
uvd->vcap.minheight = min_canvasHeight;
memset(&uvd->vchan, 0, sizeof(uvd->vchan));
uvd->vchan.flags = 0;
uvd->vchan.tuners = 0;
uvd->vchan.channel = 0;
uvd->vchan.type = VIDEO_TYPE_CAMERA;
strcpy(uvd->vchan.name, "Camera");
}
/*
* ultracam_probe()
*
* This procedure queries device descriptor and accepts the interface
* if it looks like our camera.
*
* History:
* 12-Nov-2000 Reworked to comply with new probe() signature.
* 23-Jan-2001 Added compatibility with 2.2.x kernels.
*/
static int ultracam_probe(struct usb_interface *intf, const struct usb_device_id *devid)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct uvd *uvd = NULL;
int ix, i, nas;
int actInterface=-1, inactInterface=-1, maxPS=0;
unsigned char video_ep = 0;
if (debug >= 1)
info("ultracam_probe(%p)", intf);
/* We don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1)
return -ENODEV;
info("IBM Ultra camera found (rev. 0x%04x)",
le16_to_cpu(dev->descriptor.bcdDevice));
/* Validate found interface: must have one ISO endpoint */
nas = intf->num_altsetting;
if (debug > 0)
info("Number of alternate settings=%d.", nas);
if (nas < 8) {
err("Too few alternate settings for this camera!");
return -ENODEV;
}
/* Validate all alternate settings */
for (ix=0; ix < nas; ix++) {
const struct usb_host_interface *interface;
const struct usb_endpoint_descriptor *endpoint;
interface = &intf->altsetting[ix];
i = interface->desc.bAlternateSetting;
if (interface->desc.bNumEndpoints != 1) {
err("Interface %d. has %u. endpoints!",
interface->desc.bInterfaceNumber,
(unsigned)(interface->desc.bNumEndpoints));
return -ENODEV;
}
endpoint = &interface->endpoint[0].desc;
if (video_ep == 0)
video_ep = endpoint->bEndpointAddress;
else if (video_ep != endpoint->bEndpointAddress) {
err("Alternate settings have different endpoint addresses!");
return -ENODEV;
}
if ((endpoint->bmAttributes & 0x03) != 0x01) {
err("Interface %d. has non-ISO endpoint!",
interface->desc.bInterfaceNumber);
return -ENODEV;
}
if ((endpoint->bEndpointAddress & 0x80) == 0) {
err("Interface %d. has ISO OUT endpoint!",
interface->desc.bInterfaceNumber);
return -ENODEV;
}
if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
if (inactInterface < 0)
inactInterface = i;
else {
err("More than one inactive alt. setting!");
return -ENODEV;
}
} else {
if (actInterface < 0) {
actInterface = i;
maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
if (debug > 0)
info("Active setting=%d. maxPS=%d.", i, maxPS);
} else {
/* Got another active alt. setting */
if (maxPS < le16_to_cpu(endpoint->wMaxPacketSize)) {
/* This one is better! */
actInterface = i;
maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
if (debug > 0) {
info("Even better ctive setting=%d. maxPS=%d.",
i, maxPS);
}
}
}
}
}
if ((maxPS <= 0) || (actInterface < 0) || (inactInterface < 0)) {
err("Failed to recognize the camera!");
return -ENODEV;
}
uvd = usbvideo_AllocateDevice(cams);
if (uvd != NULL) {
/* Here uvd is a fully allocated uvd object */
uvd->flags = flags;
uvd->debug = debug;
uvd->dev = dev;
uvd->iface = intf->altsetting->desc.bInterfaceNumber;
uvd->ifaceAltInactive = inactInterface;
uvd->ifaceAltActive = actInterface;
uvd->video_endp = video_ep;
uvd->iso_packet_len = maxPS;
uvd->paletteBits = 1L << VIDEO_PALETTE_RGB24;
uvd->defaultPalette = VIDEO_PALETTE_RGB24;
uvd->canvas = VIDEOSIZE(640, 480); /* FIXME */
uvd->videosize = uvd->canvas; /* ultracam_size_to_videosize(size);*/
/* Initialize ibmcam-specific data */
assert(ULTRACAM_T(uvd) != NULL);
ULTRACAM_T(uvd)->camera_model = 0; /* Not used yet */
ULTRACAM_T(uvd)->initialized = 0;
ultracam_configure_video(uvd);
i = usbvideo_RegisterVideoDevice(uvd);
if (i != 0) {
err("usbvideo_RegisterVideoDevice() failed.");
uvd = NULL;
}
}
if (uvd) {
usb_set_intfdata (intf, uvd);
return 0;
}
return -EIO;
}
static struct usb_device_id id_table[] = {
{ USB_DEVICE(ULTRACAM_VENDOR_ID, ULTRACAM_PRODUCT_ID) },
{ } /* Terminating entry */
};
/*
* ultracam_init()
*
* This code is run to initialize the driver.
*/
static int __init ultracam_init(void)
{
struct usbvideo_cb cbTbl;
memset(&cbTbl, 0, sizeof(cbTbl));
cbTbl.probe = ultracam_probe;
cbTbl.setupOnOpen = ultracam_setup_on_open;
cbTbl.videoStart = ultracam_video_start;
cbTbl.videoStop = ultracam_video_stop;
cbTbl.processData = ultracam_ProcessIsocData;
cbTbl.postProcess = usbvideo_DeinterlaceFrame;
cbTbl.adjustPicture = ultracam_adjust_picture;
cbTbl.getFPS = ultracam_calculate_fps;
return usbvideo_register(
&cams,
MAX_CAMERAS,
sizeof(ultracam_t),
"ultracam",
&cbTbl,
THIS_MODULE,
id_table);
}
static void __exit ultracam_cleanup(void)
{
usbvideo_Deregister(&cams);
}
MODULE_DEVICE_TABLE(usb, id_table);
MODULE_LICENSE("GPL");
module_init(ultracam_init);
module_exit(ultracam_cleanup);
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