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* USB CPiA Video Camera driver
*
* Supports CPiA based Video Camera's. Many manufacturers use this chipset.
* There's a good chance, if you have a USB video camera, it's a CPiA based
* one
*
* (C) Copyright 1999 Johannes Erdfelt
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/malloc.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/videodev.h>
#include <linux/vmalloc.h>
#include <linux/wrapper.h>
#include <linux/module.h>
#include <asm/spinlock.h>
#include <asm/io.h>
#include "usb.h"
#include "cpia.h"
#define MAX_FRAME_SIZE (384 * 288 * 3)
/*******************************/
/* Memory management functions */
/*******************************/
/* convert virtual user memory address to physical address */
/* (virt_to_phys only works for kmalloced kernel memory) */
static inline unsigned long uvirt_to_phys(unsigned long adr)
{
pgd_t *pgd;
pmd_t *pmd;
pte_t *ptep, pte;
pgd = pgd_offset(current->mm, adr);
if (pgd_none(*pgd))
return 0;
pmd = pmd_offset(pgd, adr);
if (pmd_none(*pmd))
return 0;
ptep = pte_offset(pmd, adr/*&(~PGDIR_MASK)*/);
pte = *ptep;
if(pte_present(pte))
return
virt_to_phys((void *)(pte_page(pte)|(adr&(PAGE_SIZE-1))));
return 0;
}
static inline unsigned long uvirt_to_bus(unsigned long adr)
{
return virt_to_bus(phys_to_virt(uvirt_to_phys(adr)));
}
/* convert virtual kernel memory address to physical address */
/* (virt_to_phys only works for kmalloced kernel memory) */
static inline unsigned long kvirt_to_phys(unsigned long adr)
{
return uvirt_to_phys(VMALLOC_VMADDR(adr));
}
static inline unsigned long kvirt_to_bus(unsigned long adr)
{
return uvirt_to_bus(VMALLOC_VMADDR(adr));
}
static void * rvmalloc(unsigned long size)
{
void * mem;
unsigned long adr, page;
size += (PAGE_SIZE - 1);
size &= ~(PAGE_SIZE - 1);
mem=vmalloc(size);
if (mem)
{
memset(mem, 0, size); /* Clear the ram out, no junk to the user */
adr=(unsigned long) mem;
while (size > 0)
{
page = kvirt_to_phys(adr);
mem_map_reserve(MAP_NR(phys_to_virt(page)));
adr+=PAGE_SIZE;
if (size > PAGE_SIZE)
size-=PAGE_SIZE;
else
size=0;
}
}
return mem;
}
static void rvfree(void * mem, unsigned long size)
{
unsigned long adr, page;
size += (PAGE_SIZE - 1);
size &= ~(PAGE_SIZE - 1);
if (mem)
{
adr=(unsigned long) mem;
while (size > 0)
{
page = kvirt_to_phys(adr);
mem_map_unreserve(MAP_NR(phys_to_virt(page)));
adr+=PAGE_SIZE;
if (size > PAGE_SIZE)
size-=PAGE_SIZE;
else
size=0;
}
vfree(mem);
}
}
int usb_cpia_get_version(struct usb_device *dev, void *buf)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE) | 0x80;
dr.request = USB_REQ_CPIA_GET_VERSION;
dr.value = 0;
dr.index = 0;
dr.length = 4;
return dev->bus->op->control_msg(dev, usb_rcvctrlpipe(dev,0), &dr, buf, 4);
}
int usb_cpia_get_pnp_id(struct usb_device *dev, void *buf)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE) | 0x80;
dr.request = USB_REQ_CPIA_GET_PNP_ID;
dr.value = 0;
dr.index = 0;
dr.length = 6;
return dev->bus->op->control_msg(dev, usb_rcvctrlpipe(dev,0), &dr, buf, 6);
}
int usb_cpia_get_camera_status(struct usb_device *dev, void *buf)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE) | 0x80;
dr.request = USB_REQ_CPIA_GET_CAMERA_STATUS;
dr.value = 0;
dr.index = 0;
dr.length = 8;
return dev->bus->op->control_msg(dev, usb_rcvctrlpipe(dev,0), &dr, buf, 8);
}
int usb_cpia_goto_hi_power(struct usb_device *dev)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_GOTO_HI_POWER;
dr.value = 0;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_get_vp_version(struct usb_device *dev, void *buf)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_GET_VP_VERSION;
dr.value = 0;
dr.index = 0;
dr.length = 4;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, buf, 4);
}
int usb_cpia_set_sensor_fps(struct usb_device *dev, int sensorbaserate, int sensorclkdivisor)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_SET_SENSOR_FPS;
dr.value = (sensorclkdivisor << 8) + sensorbaserate;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_grab_frame(struct usb_device *dev, int streamstartline)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_GRAB_FRAME;
dr.value = streamstartline << 8;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_upload_frame(struct usb_device *dev, int forceupload)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_UPLOAD_FRAME;
dr.value = forceupload;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_set_grab_mode(struct usb_device *dev, int continuousgrab)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_SET_GRAB_MODE;
dr.value = continuousgrab;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_set_format(struct usb_device *dev, int size, int subsample, int order)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_SET_FORMAT;
dr.value = (subsample << 8) + size;
dr.index = order;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_set_compression(struct usb_device *dev, int compmode, int decimation)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_SET_COMPRESSION;
dr.value = (decimation << 8) + compmode;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_initstreamcap(struct usb_device *dev, int skipframes, int streamstartline)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_INIT_STREAM_CAP;
dr.value = (streamstartline << 8) + skipframes;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_finistreamcap(struct usb_device *dev)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_FINI_STREAM_CAP;
dr.value = 0;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_startstreamcap(struct usb_device *dev)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_START_STREAM_CAP;
dr.value = 0;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
int usb_cpia_endstreamcap(struct usb_device *dev)
{
devrequest dr;
dr.requesttype = (USB_TYPE_VENDOR | USB_RECIP_DEVICE);
dr.request = USB_REQ_CPIA_END_STREAM_CAP;
dr.value = 0;
dr.index = 0;
dr.length = 0;
return dev->bus->op->control_msg(dev, usb_sndctrlpipe(dev,0), &dr, NULL, 0);
}
#define scratch_left(x) (cpia->scratchlen - (int)((char *)x - (char *)cpia->scratch))
static void cpia_parse_data(struct usb_cpia *cpia)
{
unsigned char *data = cpia->scratch;
int done;
done = 0;
while (!done && scratch_left(data)) {
switch (cpia->state) {
case STATE_SCANNING:
{
unsigned char *begin = data;
/* We need atleast 2 bytes for the magic value */
if (scratch_left(data) < 2) {
done = 1;
break;
}
printk("header: %X\n", (*data << 8) + *(data + 1));
if ((*data == 0x19) && (*(data + 1) == 0x68)) {
cpia->state = STATE_HEADER;
printk("moving to header\n");
break;
}
if (scratch_left(data) < 4) {
done = 1;
break;
}
printk("Scanning for end of frame\n");
while (scratch_left(data) >= 4) {
if ((*data == 0xFF) &&
(*(data + 1) == 0xFF) &&
(*(data + 2) == 0xFF) &&
(*(data + 3) == 0xFF)) {
data += 4;
break;
}
data++;
}
printk("scan: scanned %d bytes\n", data-begin);
break;
}
case STATE_HEADER:
/* We need atleast 64 bytes for the header */
if (scratch_left(data) < 64) {
done = 1;
break;
}
printk("header: framerate %d\n", data[41]);
data += 64;
cpia->state = STATE_LINES;
break;
case STATE_LINES:
{
unsigned char *begin = data;
int found = 0;
while (scratch_left(data)) {
if (*data == 0xFD) {
data++;
found = 1;
break;
} else if ((*data == 0xFF) &&
(scratch_left(data) >= 3) &&
(*(data + 1) == 0xFF) &&
(*(data + 2) == 0xFF) &&
(*(data + 3) == 0xFF)) {
data+=4;
cpia->curline = 144;
found = 1;
break;
}
data++;
}
#if 0
printk("line %d: scanned %d bytes\n", cpia->curline, data-begin);
#endif
if (data-begin == 355 && cpia->frame[cpia->curframe].width != 64) {
int i;
char *f = cpia->frame[cpia->curframe].data, *b = begin;
#if 0
printk("copying\n");
#endif
b+=2;
f+=(cpia->frame[cpia->curframe].width*3)*cpia->curline;
for (i = 0; i < 176; i++)
f[(i * 3) + 0] =
f[(i * 3) + 1] =
f[(i * 3) + 2] =
b[(i * 2)];
}
if (found) {
cpia->curline++;
if (cpia->curline >= 144) {
wake_up(&cpia->wq);
cpia->state = STATE_SCANNING;
cpia->curline = 0;
cpia->curframe = -1;
done = 1;
}
} else {
data = begin;
done = 1;
}
break;
}
}
}
{
int l;
l = scratch_left(data);
memmove(cpia->scratch, data, l);
cpia->scratchlen = l;
}
}
static int cpia_isoc_irq(int status, void *__buffer, int len, void *dev_id)
{
struct usb_cpia *cpia = dev_id;
struct usb_device *dev = cpia->dev;
struct cpia_sbuf *sbuf;
int i;
char *p;
if (!cpia->streaming) {
printk("oops, not streaming, but interrupt\n");
return 0;
}
if (cpia->curframe < 0) {
if (cpia->frame[0].state == FRAME_READY) {
cpia->curframe = 0;
cpia->frame[0].state = FRAME_GRABBING;
printk("capturing to frame 0\n");
} else if (cpia->frame[1].state == FRAME_READY) {
cpia->curframe = 1;
cpia->frame[1].state = FRAME_GRABBING;
printk("capturing to frame 1\n");
} else
printk("no frame available\n");
}
sbuf = &cpia->sbuf[cpia->receivesbuf];
usb_unschedule_isochronous(dev, sbuf->isodesc);
/* Do something to it now */
sbuf->len = usb_compress_isochronous(dev, sbuf->isodesc);
if (sbuf->len)
printk("%d bytes received\n", sbuf->len);
if (sbuf->len && cpia->curframe >= 0) {
if (sbuf->len > (SCRATCH_BUF_SIZE - cpia->scratchlen)) {
printk("overflow!\n");
return 0;
}
memcpy(cpia->scratch + cpia->scratchlen, sbuf->data, sbuf->len);
cpia->scratchlen += sbuf->len;
cpia_parse_data(cpia);
}
/* Reschedule this block of Isochronous desc */
usb_schedule_isochronous(dev, sbuf->isodesc, cpia->sbuf[(cpia->receivesbuf + 2) % 3].isodesc);
/* Move to the next one */
cpia->receivesbuf = (cpia->receivesbuf + 1) % 3;
return 1;
}
int cpia_init_isoc(struct usb_cpia *cpia)
{
struct usb_device *dev = cpia->dev;
cpia->receivesbuf = 0;
#if 0
cpia->parsesbuf = 0;
cpia->parsepos = 0;
#endif
cpia->scratchlen = 0;
cpia->curline = 0;
cpia->state = STATE_SCANNING;
/* Allocate all of the memory necessary */
cpia->sbuf[0].isodesc = usb_allocate_isochronous(dev, usb_rcvisocpipe(dev,1), cpia->sbuf[0].data, STREAM_BUF_SIZE, 960, cpia_isoc_irq, cpia);
cpia->sbuf[1].isodesc = usb_allocate_isochronous(dev, usb_rcvisocpipe(dev,1), cpia->sbuf[1].data, STREAM_BUF_SIZE, 960, cpia_isoc_irq, cpia);
cpia->sbuf[2].isodesc = usb_allocate_isochronous(dev, usb_rcvisocpipe(dev,1), cpia->sbuf[2].data, STREAM_BUF_SIZE, 960, cpia_isoc_irq, cpia);
printk("isodesc[0] @ %p\n", cpia->sbuf[0].isodesc);
printk("isodesc[1] @ %p\n", cpia->sbuf[1].isodesc);
printk("isodesc[2] @ %p\n", cpia->sbuf[2].isodesc);
/* Schedule the queues */
usb_schedule_isochronous(dev, cpia->sbuf[0].isodesc, NULL);
usb_schedule_isochronous(dev, cpia->sbuf[1].isodesc, cpia->sbuf[0].isodesc);
usb_schedule_isochronous(dev, cpia->sbuf[2].isodesc, cpia->sbuf[1].isodesc);
if (usb_set_interface(cpia->dev, 1, 3)) {
printk("cpia_set_interface error\n");
return -EINVAL;
}
usb_cpia_startstreamcap(cpia->dev);
cpia->streaming = 1;
return 0;
}
void cpia_stop_isoc(struct usb_cpia *cpia)
{
struct usb_device *dev = cpia->dev;
if (!cpia->streaming)
return;
cpia->streaming = 0;
/* Stop the streaming */
usb_cpia_endstreamcap(cpia->dev);
/* Set packet size to 0 */
if (usb_set_interface(cpia->dev, 1, 0)) {
printk("cpia_set_interface error\n");
return /* -EINVAL */;
}
/* Unschedule all of the iso td's */
usb_unschedule_isochronous(dev, cpia->sbuf[2].isodesc);
usb_unschedule_isochronous(dev, cpia->sbuf[1].isodesc);
usb_unschedule_isochronous(dev, cpia->sbuf[0].isodesc);
/* Delete them all */
usb_delete_isochronous(dev, cpia->sbuf[2].isodesc);
usb_delete_isochronous(dev, cpia->sbuf[1].isodesc);
usb_delete_isochronous(dev, cpia->sbuf[0].isodesc);
}
/* Video 4 Linux API */
static int cpia_open(struct video_device *dev, int flags)
{
struct usb_cpia *cpia = (struct usb_cpia *)dev;
printk("cpia_open\n");
cpia->fbuf = rvmalloc(2 * MAX_FRAME_SIZE);
if (!cpia->fbuf)
goto open_err_ret;
cpia->frame[0].state = FRAME_DONE;
cpia->frame[1].state = FRAME_DONE;
cpia->frame[0].data = cpia->fbuf;
cpia->frame[1].data = cpia->fbuf + MAX_FRAME_SIZE;
printk("frame [0] @ %p\n", cpia->frame[0].data);
printk("frame [1] @ %p\n", cpia->frame[1].data);
cpia->sbuf[0].data = kmalloc(STREAM_BUF_SIZE, GFP_KERNEL);
if (!cpia->sbuf[0].data)
goto open_err_on0;
cpia->sbuf[1].data = kmalloc(STREAM_BUF_SIZE, GFP_KERNEL);
if (!cpia->sbuf[1].data)
goto open_err_on1;
cpia->sbuf[2].data = kmalloc(STREAM_BUF_SIZE, GFP_KERNEL);
if (!cpia->sbuf[2].data)
goto open_err_on2;
printk("sbuf[0] @ %p\n", cpia->sbuf[0].data);
printk("sbuf[1] @ %p\n", cpia->sbuf[1].data);
printk("sbuf[2] @ %p\n", cpia->sbuf[2].data);
cpia->curframe = -1;
cpia->receivesbuf = 0;
usb_cpia_initstreamcap(cpia->dev, 0, 60);
cpia_init_isoc(cpia);
return 0;
open_err_on2:
kfree (cpia->sbuf[1].data);
open_err_on1:
kfree (cpia->sbuf[0].data);
open_err_on0:
rvfree(cpia->fbuf, 2 * MAX_FRAME_SIZE);
open_err_ret:
return -ENOMEM;
}
static void cpia_close(struct video_device *dev)
{
struct usb_cpia *cpia = (struct usb_cpia *)dev;
printk("cpia_close\n");
cpia_stop_isoc(cpia);
usb_cpia_finistreamcap(cpia->dev);
rvfree(cpia->fbuf, 2 * MAX_FRAME_SIZE);
kfree(cpia->sbuf[2].data);
kfree(cpia->sbuf[1].data);
kfree(cpia->sbuf[0].data);
}
static int cpia_init_done(struct video_device *dev)
{
return 0;
}
static long cpia_write(struct video_device *dev, const char *buf, unsigned long count, int noblock)
{
return -EINVAL;
}
#if 0
if (usb_set_interface(dev, 1, 3)) {
printk("cpia_set_interface error\n");
return -EINVAL;
}
if (usb_cpia_grab_frame(dev, 0)) {
printk("cpia_grab_frame error\n");
return -EINVAL;
}
if (usb_cpia_upload_frame(dev, 0)) {
printk("cpia_upload_frame error\n");
return -EINVAL;
}
buf = cpia->ibuf;
uhci_receive_isochronous(dev, usb_rcvisocpipe(dev,1), buf, 176*144*4);
{
printk("header magic: %X\n", (buf[0] << 8) + buf[1]);
while ((buf[0] != 0x19) || (buf[1] != 0x68)) {
int i;
printk("resync'ing\n");
for (i=0;i<(176*144*4)-4;i++, buf++)
if (
(buf[0] == 0xFF) &&
(buf[1] == 0xFF) &&
(buf[2] == 0xFF) &&
(buf[3] == 0xFF)) {
buf+=4;
i+=4;
break;
}
memmove(cpia->ibuf, buf, (176*144*4) - i);
uhci_receive_isochronous(dev, usb_rcvisocpipe(dev,1), cpia->ibuf + (176*144*4) - i, i);
buf = cpia->ibuf;
#if 0
printk("header magic: %X\n", (buf[0] << 8) + buf[1]);
#endif
}
printk("size: %d, sample: %d, order: %d\n", buf[16], buf[17], buf[18]);
printk("comp: %d, decimation: %d\n", buf[28], buf[29]);
printk("roi: top left: %d, %d bottom right: %d, %d\n",
buf[26] * 4, buf[24] * 8,
buf[27] * 4, buf[25] * 8);
printk("vm->frame: %d\n", vm->frame);
{
int i, i1;
char *b = buf + 64, *fbuf = &cpia->fbuffer[MAX_FRAME_SIZE * (vm->frame & 1)];
for (i=0;i<144;i++) {
#if 0
printk("line len: %d\n", (b[1] << 8) + b[0]);
#endif
b += 2;
for (i1=0;i1<176;i1++) {
fbuf[(i * vm->width * 3) + (i1 * 3)] =
fbuf[(i * vm->width * 3) + (i1 * 3) + 1] =
fbuf[(i * vm->width * 3) + (i1 * 3) + 2] =
b[i1 * 2];
#if 0
*((short *)&fbuf[(i * vm->width * 2) + (i1 * 2)]) =
((b[i1 * 2] >> 3) << 11) + ((b[i1 * 2] >> 2) << 6) + (b[i1 * 2] >> 3);
#endif
}
b += (176 * 2) + 1;
}
}
}
if (usb_set_interface(dev, 1, 0)) {
printk("cpia_set_interface error\n");
return -EINVAL;
}
#endif
static int cpia_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
{
struct usb_cpia *cpia = (struct usb_cpia *)dev;
switch (cmd) {
case VIDIOCGCAP:
{
struct video_capability b;
strcpy(b.name, "CPiA USB Camera");
b.type = VID_TYPE_CAPTURE /* | VID_TYPE_SUBCAPTURE */;
b.channels = 1;
b.audios = 0;
b.maxwidth = 176 /* 352 */;
b.maxheight = 144 /* 240 */;
b.minwidth = 176 /* (Something small?) */;
b.minheight = 144 /* " " */;
if (copy_to_user(arg, &b, sizeof(b)))
return -EFAULT;
return 0;
}
case VIDIOCGCHAN:
{
struct video_channel v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v.channel != 0)
return -EINVAL;
v.flags = 0;
v.tuners = 0;
v.type = VIDEO_TYPE_CAMERA;
strcpy(v.name, "Camera");
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSCHAN:
{
int v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v != 0)
return -EINVAL;
return 0;
}
case VIDIOCGTUNER:
{
struct video_tuner v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v.tuner)
return -EINVAL;
strcpy(v.name, "Format");
v.rangelow = 0;
v.rangehigh = 0;
v.flags = 0;
v.mode = VIDEO_MODE_AUTO;
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSTUNER:
{
struct video_tuner v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v.tuner)
return -EINVAL;
if (v.mode != VIDEO_MODE_AUTO)
return -EINVAL;
return 0;
}
case VIDIOCGPICT:
{
struct video_picture p;
p.colour = 0x8000; /* Damn British people :) */
p.hue = 0x8000;
p.brightness = 180 << 8; /* XXX */
p.contrast = 192 << 8; /* XXX */
p.whiteness = 105 << 8; /* XXX */
#if 0
p.depth = 24;
#endif
p.depth = 16;
p.palette = VIDEO_PALETTE_YUYV;
if (copy_to_user(arg, &p, sizeof(p)))
return -EFAULT;
return 0;
}
case VIDIOCSPICT:
{
struct video_picture p;
if (copy_from_user(&p, arg, sizeof(p)))
return -EFAULT;
printk("Attempting to set palette %d, depth %d\n", p.palette, p.depth);
#if 0
if (p.palette != VIDEO_PALETTE_YUYV)
return -EINVAL;
if (p.depth != 16)
return -EINVAL;
#endif
return 0;
}
case VIDIOCSWIN:
{
struct video_window vw;
printk("VIDIOCSWIN\n");
if (copy_from_user(&vw, arg, sizeof(vw)))
return -EFAULT;
if (vw.flags)
return -EINVAL;
if (vw.clipcount)
return -EINVAL;
if (vw.height != 176)
return -EINVAL;
if (vw.width != 144)
return -EINVAL;
return 0;
}
case VIDIOCGWIN:
{
struct video_window vw;
printk("VIDIOCGWIN\n");
vw.x = 0;
vw.y = 0;
vw.width = 176;
vw.height = 144;
vw.chromakey = 0;
vw.flags = 0;
if (copy_to_user(arg, &vw, sizeof(vw)))
return -EFAULT;
return 0;
}
case VIDIOCGMBUF:
{
struct video_mbuf vm;
memset(&vm, 0, sizeof(vm));
vm.size = MAX_FRAME_SIZE * 2;
vm.frames = 2;
vm.offsets[0] = 0;
vm.offsets[1] = MAX_FRAME_SIZE;
if (copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
return -EFAULT;
return 0;
}
case VIDIOCMCAPTURE:
{
struct video_mmap vm;
if (copy_from_user((void *)&vm, (void *)arg, sizeof(vm)))
return -EFAULT;
printk("MCAPTURE\n");
printk("frame: %d, size: %dx%d, format: %d\n", vm.frame, vm.width, vm.height, vm.format);
if (vm.format != VIDEO_PALETTE_RGB24)
return -EINVAL;
if ((vm.frame != 0) && (vm.frame != 1))
return -EINVAL;
cpia->frame[vm.frame].width = vm.width;
cpia->frame[vm.frame].height = vm.height;
/* Mark it as free */
cpia->frame[vm.frame].state = FRAME_READY;
return 0;
}
case VIDIOCSYNC:
{
int frame;
if (copy_from_user((void *)&frame, arg, sizeof(int)))
return -EFAULT;
printk("syncing to frame %d\n", frame);
switch (cpia->frame[frame].state) {
case FRAME_UNUSED:
return -EINVAL;
case FRAME_READY:
case FRAME_GRABBING:
interruptible_sleep_on(&cpia->wq);
case FRAME_DONE:
cpia->frame[frame].state = FRAME_UNUSED;
break;
}
printk("synced to frame %d\n", frame);
return 0;
}
case VIDIOCCAPTURE:
return -EINVAL;
case VIDIOCGFBUF:
return -EINVAL;
case VIDIOCSFBUF:
return -EINVAL;
case VIDIOCKEY:
return 0;
case VIDIOCGFREQ:
return -EINVAL;
case VIDIOCSFREQ:
return -EINVAL;
case VIDIOCGAUDIO:
return -EINVAL;
case VIDIOCSAUDIO:
return -EINVAL;
default:
return -ENOIOCTLCMD;
}
return 0;
}
static long cpia_read(struct video_device *dev, char *buf, unsigned long count, int noblock)
{
struct usb_cpia *cpia = (struct usb_cpia *)dev;
int len;
printk("cpia_read: %ld bytes\n", count);
#if 0
len = cpia_capture(cpia, buf, count);
return len;
#endif
return 0;
}
static int cpia_mmap(struct video_device *dev, const char *adr, unsigned long size)
{
struct usb_cpia *cpia = (struct usb_cpia *)dev;
unsigned long start = (unsigned long)adr;
unsigned long page, pos;
printk("mmap: %ld (%lX) bytes\n", size, size);
if (size > (((2 * MAX_FRAME_SIZE) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)))
return -EINVAL;
#if 0
if (!cpia->fbuffer) {
if ((cpia->fbuffer = rvmalloc(2 * MAX_FRAME_SIZE)) == NULL)
return -EINVAL;
}
#endif
pos = (unsigned long)cpia->fbuf;
while (size > 0)
{
page = kvirt_to_phys(pos);
if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED))
return -EAGAIN;
start+=PAGE_SIZE;
pos+=PAGE_SIZE;
if (size > PAGE_SIZE)
size-=PAGE_SIZE;
else
size=0;
}
return 0;
}
static struct video_device cpia_template = {
"CPiA USB Camera",
VID_TYPE_CAPTURE,
VID_HARDWARE_CPIA,
cpia_open,
cpia_close,
cpia_read,
cpia_write,
NULL,
cpia_ioctl,
cpia_mmap,
cpia_init_done,
NULL,
0,
0
};
static void usb_cpia_configure(struct usb_cpia *cpia)
{
struct usb_device *dev = cpia->dev;
unsigned char version[4];
unsigned char pnpid[6];
unsigned char camerastat[8];
unsigned char *buf;
if (usb_set_configuration(dev, dev->config[0].bConfigurationValue)) {
printk (KERN_INFO " Failed usb_set_configuration: CPIA\n");
return;
}
if (usb_cpia_get_version(dev, version)) {
printk("cpia_get_version error\n");
return;
}
printk("cpia: Firmware v%d.%d, VC Hardware v%d.%d\n",
version[0], version[1], version[2], version[3]);
if (usb_cpia_get_pnp_id(dev, pnpid)) {
printk("cpia_get_pnp_id error\n");
return;
}
printk("cpia: PnP Id: Vendor: %X, Product: %X, Revision: %X\n",
(pnpid[1] << 8) + pnpid[0], (pnpid[3] << 8) + pnpid[2],
(pnpid[5] << 8) + pnpid[4]);
memcpy(&cpia->vdev, &cpia_template, sizeof(cpia_template));
init_waitqueue_head(&cpia->wq);
if (video_register_device(&cpia->vdev, VFL_TYPE_GRABBER) == -1) {
printk("video_register_device failed\n");
return;
}
if (usb_cpia_goto_hi_power(dev)) {
printk("cpia_goto_hi_power error\n");
return;
}
if (usb_cpia_get_vp_version(dev, version)) {
printk("cpia_get_vp_version error\n");
return;
}
printk("cpia: VP v%d rev %d\n", version[0], version[1]);
printk("cpia: Camera Head ID %04X\n", (version[3] << 8) + version[2]);
/* Turn off continuous grab */
if (usb_cpia_set_grab_mode(dev, 1)) {
printk("cpia_set_grab_mode error\n");
return;
}
/* Set up the sensor to be 30fps */
if (usb_cpia_set_sensor_fps(dev, 1, 0)) {
printk("cpia_set_sensor_fps error\n");
return;
}
/* Set video into QCIF mode, and order into YUYV mode */
if (usb_cpia_set_format(dev, CPIA_QCIF, 1, CPIA_YUYV)) {
printk("cpia_set_format error\n");
return;
}
/* Turn off compression */
if (usb_cpia_set_compression(dev, 0, 0)) {
printk("cpia_set_compression error\n");
return;
}
#if 0
if (usb_cpia_grab_frame(dev, 0)) {
printk("cpia_grab_frame error\n");
return;
}
if (usb_cpia_upload_frame(dev, 1)) {
printk("cpia_upload_frame error\n");
return;
}
buf = (void *)__get_free_page(GFP_KERNEL);
{
int i;
for (i=0;i<448;i++)
buf[i]=0;
}
uhci_receive_isochronous(dev, usb_rcvisocpipe(dev,1), buf, 448);
{
int i;
for (i=0;i<448;i++) {
printk("%02X ", buf[i]);
if ((i % 16) == 15)
printk("\n");
}
printk("\n");
}
free_page((unsigned long)buf);
#endif
}
static int cpia_probe(struct usb_device *dev)
{
struct usb_interface_descriptor *interface;
struct usb_endpoint_descriptor *endpoint;
struct usb_cpia *cpia;
/* We don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1)
return -1;
#if 0
/* We don't handle multi-interface hubs */
if (dev->config[0].bNumInterfaces != 1)
return -1;
#endif
interface = &dev->config[0].altsetting[0].interface[0];
/* Is it a CPiA? */
/*
Apr 24 17:49:04 bjorn kernel: Vendor: 0545
Apr 24 17:49:04 bjorn kernel: Product: 8080
*/
/*
if (dev->descriptor.idVendor != 0x0545)
return -1;
if (dev->descriptor.idProduct != 0x8080)
return -1;
if (interface->bInterfaceClass != 0xFF)
return -1;
if (interface->bInterfaceSubClass != 0xFF)
return -1;
*/
if (dev->descriptor.idVendor != 0x0553)
return -1;
if (dev->descriptor.idProduct != 0x0002)
return -1;
if (interface->bInterfaceClass != 0xFF)
return -1;
if (interface->bInterfaceSubClass != 0x00)
return -1;
#if 0
/* Multiple endpoints? What kind of mutant ninja-hub is this? */
if (interface->bNumEndpoints != 1)
return -1;
endpoint = &interface->endpoint[0];
/* Output endpoint? Curiousier and curiousier.. */
if (!(endpoint->bEndpointAddress & 0x80))
return -1;
/* If it's not an interrupt endpoint, we'd better punt! */
if ((endpoint->bmAttributes & 3) != 3)
return -1;
#endif
/* We found a CPiA */
printk("USB CPiA camera found\n");
if ((cpia = kmalloc(sizeof(*cpia), GFP_KERNEL)) == NULL) {
printk("couldn't kmalloc cpia struct\n");
return -1;
}
memset(cpia, 0, sizeof(*cpia));
dev->private = cpia;
cpia->dev = dev;
usb_cpia_configure(cpia);
#if 0
usb_request_irq(dev, usb_rcvctrlpipe(dev, endpoint->bEndpointAddress), pport_irq, endpoint->bInterval, pport);
#endif
return 0;
}
static void cpia_disconnect(struct usb_device *dev)
{
struct usb_cpia *cpia = dev->private;
video_unregister_device(&cpia->vdev);
/* Free the memory */
kfree(cpia);
}
static struct usb_driver cpia_driver = {
"cpia",
cpia_probe,
cpia_disconnect,
{ NULL, NULL }
};
/*
* This should be a separate module.
*/
int usb_cpia_init(void)
{
usb_register(&cpia_driver);
return 0;
}
#ifdef MODULE
int init_module(void)
{
return usb_cpia_init();
}
void cleanup_module(void)
{
}
#endif
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