se401.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:41k
- /*
- * Endpoints (formerly known as AOX) se401 USB Camera Driver
- *
- * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
- *
- * Still somewhat based on the Linux ov511 driver.
- *
- * 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 (at your
- * option) 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * Thanks to Endpoints Inc. (www.endpoints.com) for making documentation on
- * their chipset available and supporting me while writing this driver.
- * - Jeroen Vreeken
- */
- static const char version[] = "0.23";
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/version.h>
- #include <linux/init.h>
- #include <linux/fs.h>
- #include <linux/vmalloc.h>
- #include <linux/slab.h>
- #include <linux/proc_fs.h>
- #include <linux/pagemap.h>
- #include <linux/usb.h>
- #include <asm/io.h>
- #include <asm/semaphore.h>
- #include <linux/wrapper.h>
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 0)
- #define virt_to_page(arg) MAP_NR(arg)
- #define vmalloc_32 vmalloc
- #endif
- #include "se401.h"
- static int flickerless=0;
- static int video_nr = -1;
- #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 3, 0)
- static __devinitdata struct usb_device_id device_table [] = {
- { USB_DEVICE(0x03e8, 0x0004) },/* Endpoints/Aox SE401 */
- { USB_DEVICE(0x0471, 0x030b) },/* Philips PCVC665K */
- { USB_DEVICE(0x047d, 0x5001) },/* Kensington 67014 */
- { USB_DEVICE(0x047d, 0x5002) },/* Kensington 6701(5/7) */
- { USB_DEVICE(0x047d, 0x5003) },/* Kensington 67016 */
- { }
- };
- MODULE_DEVICE_TABLE(usb, device_table);
- #endif
- MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
- MODULE_DESCRIPTION("SE401 USB Camera Driver");
- MODULE_LICENSE("GPL");
- MODULE_PARM(flickerless, "i");
- MODULE_PARM_DESC(flickerless, "Net frequency to adjust exposure time to (0/50/60)");
- MODULE_PARM(video_nr, "i");
- EXPORT_NO_SYMBOLS;
- static struct usb_driver se401_driver;
- /**********************************************************************
- *
- * Memory management
- *
- * This is a shameless copy from the USB-cpia driver (linux kernel
- * version 2.3.29 or so, I have no idea what this code actually does ;).
- * Actually it seems to be a copy of a shameless copy of the bttv-driver.
- * Or that is a copy of a shameless copy of ... (To the powers: is there
- * no generic kernel-function to do this sort of stuff?)
- *
- * Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says
- * there will be one, but apparentely not yet -jerdfelt
- *
- * So I copied it again for the ov511 driver -claudio
- *
- * Same for the se401 driver -Jeroen
- **********************************************************************/
- /* Given PGD from the address space's page table, return the kernel
- * virtual mapping of the physical memory mapped at ADR.
- */
- static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr)
- {
- unsigned long ret = 0UL;
- pmd_t *pmd;
- pte_t *ptep, pte;
- if (!pgd_none(*pgd)) {
- pmd = pmd_offset(pgd, adr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset(pmd, adr);
- pte = *ptep;
- if (pte_present(pte)) {
- ret = (unsigned long) page_address(pte_page(pte));
- ret |= (adr & (PAGE_SIZE - 1));
- }
- }
- }
- return ret;
- }
- /* Here we want the physical address of the memory.
- * This is used when initializing the contents of the
- * area and marking the pages as reserved.
- */
- static inline unsigned long kvirt_to_pa(unsigned long adr)
- {
- unsigned long va, kva, ret;
- va = VMALLOC_VMADDR(adr);
- kva = uvirt_to_kva(pgd_offset_k(va), va);
- ret = __pa(kva);
- return ret;
- }
- static void *rvmalloc(unsigned long size)
- {
- void *mem;
- unsigned long adr, page;
- /* Round it off to PAGE_SIZE */
- size += (PAGE_SIZE - 1);
- size &= ~(PAGE_SIZE - 1);
- mem = vmalloc_32(size);
- if (!mem)
- return NULL;
- memset(mem, 0, size); /* Clear the ram out, no junk to the user */
- adr = (unsigned long) mem;
- while (size > 0) {
- page = kvirt_to_pa(adr);
- mem_map_reserve(virt_to_page(__va(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;
- if (!mem)
- return;
- size += (PAGE_SIZE - 1);
- size &= ~(PAGE_SIZE - 1);
- adr=(unsigned long) mem;
- while (size > 0) {
- page = kvirt_to_pa(adr);
- mem_map_unreserve(virt_to_page(__va(page)));
- adr += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- vfree(mem);
- }
- /****************************************************************************
- *
- * /proc interface
- *
- ***************************************************************************/
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- static struct proc_dir_entry *se401_proc_entry = NULL;
- extern struct proc_dir_entry *video_proc_entry;
- #define YES_NO(x) ((x) ? "yes" : "no")
- static int se401_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
- {
- char *out = page;
- int i, len;
- struct usb_se401 *se401 = data;
-
- /* Stay under PAGE_SIZE or else bla bla bla.... */
- out+=sprintf(out, "driver_version : %sn", version);
- out+=sprintf(out, "model : %sn", se401->camera_name);
- out+=sprintf(out, "in use : %sn", YES_NO (se401->user));
- out+=sprintf(out, "streaming : %sn", YES_NO (se401->streaming));
- out+=sprintf(out, "button state : %sn", YES_NO (se401->button));
- out+=sprintf(out, "button pressed : %sn", YES_NO (se401->buttonpressed));
- out+=sprintf(out, "num_frames : %dn", SE401_NUMFRAMES);
- out+=sprintf(out, "Sizes :");
- for (i=0; i<se401->sizes; i++) {
- out+=sprintf(out, " %dx%d", se401->width[i],
- se401->height[i]);
- }
- out+=sprintf(out, "n");
-
- out+=sprintf(out, "Frames total : %dn", se401->readcount);
- out+=sprintf(out, "Frames read : %dn", se401->framecount);
- out+=sprintf(out, "Packets dropped : %dn", se401->dropped);
- out+=sprintf(out, "Decoding Errors : %dn", se401->error);
- len = out - page;
- len -= off;
- if (len < count) {
- *eof = 1;
- if (len <= 0) return 0;
- } else
- len = count;
- *start = page + off;
-
- return len;
- }
- static int se401_write_proc(struct file *file, const char *buffer,
- unsigned long count, void *data)
- {
- return -EINVAL;
- }
- static void create_proc_se401_cam (struct usb_se401 *se401)
- {
- char name[7];
- struct proc_dir_entry *ent;
- if (!se401_proc_entry || !se401)
- return;
- sprintf (name, "video%d", se401->vdev.minor);
- ent = create_proc_entry(name, S_IFREG | S_IRUGO | S_IWUSR,
- se401_proc_entry);
- if (!ent)
- return;
- ent->data = se401;
- ent->read_proc = se401_read_proc;
- ent->write_proc = se401_write_proc;
- se401->proc_entry = ent;
- }
- static void destroy_proc_se401_cam (struct usb_se401 *se401)
- {
- /* One to much, just to be sure :) */
- char name[9];
- if (!se401 || !se401->proc_entry)
- return;
-
- sprintf(name, "video%d", se401->vdev.minor);
- remove_proc_entry(name, se401_proc_entry);
- se401->proc_entry = NULL;
- }
- static void proc_se401_create (void)
- {
- if (video_proc_entry == NULL) {
- err("/proc/video/ doesn't exist");
- return;
- }
- se401_proc_entry=create_proc_entry("se401", S_IFDIR, video_proc_entry);
- if (se401_proc_entry)
- se401_proc_entry->owner = THIS_MODULE;
- else
- err("Unable to initialize /proc/video/se401");
- }
- static void proc_se401_destroy(void)
- {
- if (se401_proc_entry == NULL)
- return;
- remove_proc_entry("se401", video_proc_entry);
- }
- #endif /* CONFIG_PROC_FS && CONFIG_VIDEO_PROC_FS */
- /****************************************************************************
- *
- * se401 register read/write functions
- *
- ***************************************************************************/
- static int se401_sndctrl(int set, struct usb_se401 *se401, unsigned short req,
- unsigned short value, unsigned char *cp, int size)
- {
- return usb_control_msg (
- se401->dev,
- set ? usb_sndctrlpipe(se401->dev, 0) : usb_rcvctrlpipe(se401->dev, 0),
- req,
- (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value,
- 0,
- cp,
- size,
- HZ
- );
- }
- static int se401_set_feature(struct usb_se401 *se401, unsigned short selector,
- unsigned short param)
- {
- /* specs say that the selector (address) should go in the value field
- and the param in index, but in the logs of the windows driver they do
- this the other way around...
- */
- return usb_control_msg (
- se401->dev,
- usb_sndctrlpipe(se401->dev, 0),
- SE401_REQ_SET_EXT_FEATURE,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- param,
- selector,
- NULL,
- 0,
- HZ
- );
- }
- static unsigned short se401_get_feature(struct usb_se401 *se401,
- unsigned short selector)
- {
- /* For 'set' the selecetor should be in index, not sure if the spec is
- wrong here to....
- */
- unsigned char cp[2];
- usb_control_msg (
- se401->dev,
- usb_rcvctrlpipe(se401->dev, 0),
- SE401_REQ_GET_EXT_FEATURE,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0,
- selector,
- cp,
- 2,
- HZ
- );
- return cp[0]+cp[1]*256;
- }
- /****************************************************************************
- *
- * Camera control
- *
- ***************************************************************************/
- static int se401_send_pict(struct usb_se401 *se401)
- {
- se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);/* integration time low */
- se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);/* integration time mid */
- se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);/* integration time mid */
- se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);/* reset level value */
- se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);/* red color gain */
- se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);/* green color gain */
- se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);/* blue color gain */
-
- return 0;
- }
- static void se401_set_exposure(struct usb_se401 *se401, int brightness)
- {
- int integration=brightness<<5;
-
- if (flickerless==50) {
- integration=integration-integration%106667;
- }
- if (flickerless==60) {
- integration=integration-integration%88889;
- }
- se401->brightness=integration>>5;
- se401->expose_h=(integration>>16)&0xff;
- se401->expose_m=(integration>>8)&0xff;
- se401->expose_l=integration&0xff;
- }
- static int se401_get_pict(struct usb_se401 *se401, struct video_picture *p)
- {
- p->brightness=se401->brightness;
- if (se401->enhance) {
- p->whiteness=32768;
- } else {
- p->whiteness=0;
- }
- p->colour=65535;
- p->contrast=65535;
- p->hue=se401->rgain<<10;
- p->palette=se401->palette;
- p->depth=3; /* rgb24 */
- return 0;
- }
- static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p)
- {
- if (p->palette != VIDEO_PALETTE_RGB24)
- return 1;
- se401->palette=p->palette;
- if (p->hue!=se401->hue) {
- se401->rgain= p->hue>>10;
- se401->bgain= 0x40-(p->hue>>10);
- se401->hue=p->hue;
- }
- if (p->brightness!=se401->brightness) {
- se401_set_exposure(se401, p->brightness);
- }
- if (p->whiteness>=32768) {
- se401->enhance=1;
- } else {
- se401->enhance=0;
- }
- se401_send_pict(se401);
- se401_send_pict(se401);
- return 0;
- }
- /*
- Hyundai have some really nice docs about this and other sensor related
- stuff on their homepage: www.hei.co.kr
- */
- static void se401_auto_resetlevel(struct usb_se401 *se401)
- {
- unsigned int ahrc, alrc;
- int oldreset=se401->resetlevel;
- /* For some reason this normally read-only register doesn't get reset
- to zero after reading them just once...
- */
- se401_get_feature(se401, HV7131_REG_HIREFNOH);
- se401_get_feature(se401, HV7131_REG_HIREFNOL);
- se401_get_feature(se401, HV7131_REG_LOREFNOH);
- se401_get_feature(se401, HV7131_REG_LOREFNOL);
- ahrc=256*se401_get_feature(se401, HV7131_REG_HIREFNOH) +
- se401_get_feature(se401, HV7131_REG_HIREFNOL);
- alrc=256*se401_get_feature(se401, HV7131_REG_LOREFNOH) +
- se401_get_feature(se401, HV7131_REG_LOREFNOL);
- /* Not an exact science, but it seems to work pretty well... */
- if (alrc > 10) {
- while (alrc>=10 && se401->resetlevel < 63) {
- se401->resetlevel++;
- alrc /=2;
- }
- } else if (ahrc > 20) {
- while (ahrc>=20 && se401->resetlevel > 0) {
- se401->resetlevel--;
- ahrc /=2;
- }
- }
- if (se401->resetlevel!=oldreset)
- se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);
- return;
- }
- /* irq handler for snapshot button */
- static void se401_button_irq(struct urb *urb)
- {
- struct usb_se401 *se401 = urb->context;
-
- if (!se401->dev) {
- info("ohoh: device vapourished");
- return;
- }
-
- if (urb->actual_length >=2 && !urb->status) {
- if (se401->button)
- se401->buttonpressed=1;
- }
- }
- static void se401_video_irq(struct urb *urb)
- {
- struct usb_se401 *se401 = urb->context;
- int length = urb->actual_length;
- /* ohoh... */
- if (!se401->streaming)
- return;
- if (!se401->dev) {
- info ("ohoh: device vapourished");
- return;
- }
- /* 0 sized packets happen if we are to fast, but sometimes the camera
- keeps sending them forever...
- */
- if (length && !urb->status) {
- se401->nullpackets=0;
- switch(se401->scratch[se401->scratch_next].state) {
- case BUFFER_READY:
- case BUFFER_BUSY: {
- se401->dropped++;
- break;
- }
- case BUFFER_UNUSED: {
- memcpy(se401->scratch[se401->scratch_next].data, (unsigned char *)urb->transfer_buffer, length);
- se401->scratch[se401->scratch_next].state=BUFFER_READY;
- se401->scratch[se401->scratch_next].offset=se401->bayeroffset;
- se401->scratch[se401->scratch_next].length=length;
- if (waitqueue_active(&se401->wq)) {
- wake_up_interruptible(&se401->wq);
- }
- se401->scratch_overflow=0;
- se401->scratch_next++;
- if (se401->scratch_next>=SE401_NUMSCRATCH)
- se401->scratch_next=0;;
- break;
- }
- }
- se401->bayeroffset+=length;
- if (se401->bayeroffset>=se401->cheight*se401->cwidth) {
- se401->bayeroffset=0;
- }
- } else {
- se401->nullpackets++;
- if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
- if (waitqueue_active(&se401->wq)) {
- wake_up_interruptible(&se401->wq);
- }
- }
- }
- /* Resubmit urb for new data */
- urb->status=0;
- urb->dev=se401->dev;
- if(usb_submit_urb(urb))
- info("urb burned down");
- return;
- }
- static void se401_send_size(struct usb_se401 *se401, int width, int height)
- {
- int i=0;
- int mode=0x03; /* No compression */
- int sendheight=height;
- int sendwidth=width;
- /* JangGu compression can only be used with the camera supported sizes,
- but bayer seems to work with any size that fits on the sensor.
- We check if we can use compression with the current size with either
- 4 or 16 times subcapturing, if not we use uncompressed bayer data
- but this will result in cutouts of the maximum size....
- */
- while (i<se401->sizes && !(se401->width[i]==width && se401->height[i]==height))
- i++;
- while (i<se401->sizes) {
- if (se401->width[i]==width*2 && se401->height[i]==height*2) {
- sendheight=se401->height[i];
- sendwidth=se401->width[i];
- mode=0x40;
- }
- if (se401->width[i]==width*4 && se401->height[i]==height*4) {
- sendheight=se401->height[i];
- sendwidth=se401->width[i];
- mode=0x42;
- }
- i++;
- }
- se401_sndctrl(1, se401, SE401_REQ_SET_WIDTH, sendwidth, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_SET_HEIGHT, sendheight, NULL, 0);
- se401_set_feature(se401, SE401_OPERATINGMODE, mode);
- if (mode==0x03) {
- se401->format=FMT_BAYER;
- } else {
- se401->format=FMT_JANGGU;
- }
- return;
- }
- /*
- In this function se401_send_pict is called several times,
- for some reason (depending on the state of the sensor and the phase of
- the moon :) doing this only in either place doesn't always work...
- */
- static int se401_start_stream(struct usb_se401 *se401)
- {
- urb_t *urb;
- int err=0, i;
- se401->streaming=1;
- se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
- /* Set picture settings */
- se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);/*windowed + pix intg */
- se401_send_pict(se401);
- se401_send_size(se401, se401->cwidth, se401->cheight);
- se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, NULL, 0);
- /* Do some memory allocation */
- for (i=0; i<SE401_NUMFRAMES; i++) {
- se401->frame[i].data=se401->fbuf + i * se401->maxframesize;
- se401->frame[i].curpix=0;
- }
- for (i=0; i<SE401_NUMSBUF; i++) {
- se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
- }
- se401->bayeroffset=0;
- se401->scratch_next=0;
- se401->scratch_use=0;
- se401->scratch_overflow=0;
- for (i=0; i<SE401_NUMSCRATCH; i++) {
- se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
- se401->scratch[i].state=BUFFER_UNUSED;
- }
- for (i=0; i<SE401_NUMSBUF; i++) {
- urb=usb_alloc_urb(0);
- if(!urb)
- return ENOMEM;
- FILL_BULK_URB(urb, se401->dev,
- usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT),
- se401->sbuf[i].data, SE401_PACKETSIZE,
- se401_video_irq,
- se401);
- urb->transfer_flags |= USB_QUEUE_BULK;
- se401->urb[i]=urb;
- err=usb_submit_urb(se401->urb[i]);
- if(err)
- err("urb burned down");
- }
- se401->framecount=0;
- return 0;
- }
- static int se401_stop_stream(struct usb_se401 *se401)
- {
- int i;
- if (!se401->streaming || !se401->dev)
- return 1;
- se401->streaming=0;
- se401_sndctrl(1, se401, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0);
- for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) {
- se401->urb[i]->next=NULL;
- usb_unlink_urb(se401->urb[i]);
- usb_free_urb(se401->urb[i]);
- se401->urb[i]=NULL;
- kfree(se401->sbuf[i].data);
- }
- for (i=0; i<SE401_NUMSCRATCH; i++) {
- kfree(se401->scratch[i].data);
- se401->scratch[i].data=NULL;
- }
- return 0;
- }
- static int se401_set_size(struct usb_se401 *se401, int width, int height)
- {
- int wasstreaming=se401->streaming;
- /* Check to see if we need to change */
- if (se401->cwidth==width && se401->cheight==height)
- return 0;
- /* Check for a valid mode */
- if (!width || !height)
- return 1;
- if ((width & 1) || (height & 1))
- return 1;
- if (width>se401->width[se401->sizes-1])
- return 1;
- if (height>se401->height[se401->sizes-1])
- return 1;
- /* Stop a current stream and start it again at the new size */
- if (wasstreaming)
- se401_stop_stream(se401);
- se401->cwidth=width;
- se401->cheight=height;
- if (wasstreaming)
- se401_start_stream(se401);
- return 0;
- }
- /****************************************************************************
- *
- * Video Decoding
- *
- ***************************************************************************/
- /*
- This shouldn't really be done in a v4l driver....
- But it does make the image look a lot more usable.
- Basicly it lifts the dark pixels more than the light pixels.
- */
- static inline void enhance_picture(unsigned char *frame, int len)
- {
- while (len--) {
- *frame++=(((*frame^255)*(*frame^255))/255)^255;
- }
- }
- static inline void decode_JangGu_integrate(struct usb_se401 *se401, int data)
- {
- struct se401_frame *frame=&se401->frame[se401->curframe];
- int linelength=se401->cwidth*3;
- if (frame->curlinepix >= linelength) {
- frame->curlinepix=0;
- frame->curline+=linelength;
- }
- /* First three are absolute, all others relative.
- * Format is rgb from right to left (mirrorred image),
- * we flip it to get bgr from left to right. */
- if (frame->curlinepix < 3) {
- *(frame->curline-frame->curlinepix)=1+data*4;
- } else {
- *(frame->curline-frame->curlinepix)=
- *(frame->curline-frame->curlinepix+3)+data*4;
- }
- frame->curlinepix++;
- }
- static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *data, int bit_exp, int packetlength)
- {
- int pos=0;
- int vlc_cod=0;
- int vlc_size=0;
- int vlc_data=0;
- int bit_cur;
- int bit;
- data+=4;
- while (pos < packetlength) {
- bit_cur=8;
- while (bit_cur && bit_exp) {
- bit=((*data)>>(bit_cur-1))&1;
- if (!vlc_cod) {
- if (bit) {
- vlc_size++;
- } else {
- if (!vlc_size) {
- decode_JangGu_integrate(se401, 0);
- } else {
- vlc_cod=2;
- vlc_data=0;
- }
- }
- } else {
- if (vlc_cod==2) {
- if (!bit) vlc_data=-(1<<vlc_size)+1;
- vlc_cod--;
- }
- vlc_size--;
- vlc_data+=bit<<vlc_size;
- if (!vlc_size) {
- decode_JangGu_integrate(se401, vlc_data);
- vlc_cod=0;
- }
- }
- bit_cur--;
- bit_exp--;
- }
- pos++;
- data++;
- }
- }
- static inline void decode_JangGu (struct usb_se401 *se401, struct se401_scratch *buffer)
- {
- unsigned char *data=buffer->data;
- int len=buffer->length;
- int bit_exp=0, pix_exp=0, frameinfo=0, packetlength=0, size;
- int datapos=0;
- /* New image? */
- if (!se401->frame[se401->curframe].curpix) {
- se401->frame[se401->curframe].curlinepix=0;
- se401->frame[se401->curframe].curline=
- se401->frame[se401->curframe].data+
- se401->cwidth*3-1;
- if (se401->frame[se401->curframe].grabstate==FRAME_READY)
- se401->frame[se401->curframe].grabstate=FRAME_GRABBING;
- se401->vlcdatapos=0;
- }
- while (datapos < len) {
- size=1024-se401->vlcdatapos;
- if (size+datapos > len)
- size=len-datapos;
- memcpy(se401->vlcdata+se401->vlcdatapos, data+datapos, size);
- se401->vlcdatapos+=size;
- packetlength=0;
- if (se401->vlcdatapos >= 4) {
- bit_exp=se401->vlcdata[3]+(se401->vlcdata[2]<<8);
- pix_exp=se401->vlcdata[1]+((se401->vlcdata[0]&0x3f)<<8);
- frameinfo=se401->vlcdata[0]&0xc0;
- packetlength=((bit_exp+47)>>4)<<1;
- if (packetlength > 1024) {
- se401->vlcdatapos=0;
- datapos=len;
- packetlength=0;
- se401->error++;
- se401->frame[se401->curframe].curpix=0;
- }
- }
- if (packetlength && se401->vlcdatapos >= packetlength) {
- decode_JangGu_vlc(se401, se401->vlcdata, bit_exp, packetlength);
- se401->frame[se401->curframe].curpix+=pix_exp*3;
- datapos+=size-(se401->vlcdatapos-packetlength);
- se401->vlcdatapos=0;
- if (se401->frame[se401->curframe].curpix>=se401->cwidth*se401->cheight*3) {
- if (se401->frame[se401->curframe].curpix==se401->cwidth*se401->cheight*3) {
- if (se401->frame[se401->curframe].grabstate==FRAME_GRABBING) {
- se401->frame[se401->curframe].grabstate=FRAME_DONE;
- se401->framecount++;
- se401->readcount++;
- }
- if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
- se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
- }
- } else {
- se401->error++;
- }
- se401->frame[se401->curframe].curpix=0;
- datapos=len;
- }
- } else {
- datapos+=size;
- }
- }
- }
- static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *buffer)
- {
- unsigned char *data=buffer->data;
- int len=buffer->length;
- int offset=buffer->offset;
- int datasize=se401->cwidth*se401->cheight;
- struct se401_frame *frame=&se401->frame[se401->curframe];
- unsigned char *framedata=frame->data, *curline, *nextline;
- int width=se401->cwidth;
- int blineoffset=0, bline;
- int linelength=width*3, i;
-
- if (frame->curpix==0) {
- if (frame->grabstate==FRAME_READY) {
- frame->grabstate=FRAME_GRABBING;
- }
- frame->curline=framedata+linelength;
- frame->curlinepix=0;
- }
- if (offset!=frame->curpix) {
- /* Regard frame as lost :( */
- frame->curpix=0;
- se401->error++;
- return;
- }
- /* Check if we have to much data */
- if (frame->curpix+len > datasize) {
- len=datasize-frame->curpix;
- }
- if (se401->cheight%4)
- blineoffset=1;
- bline=frame->curpix/se401->cwidth+blineoffset;
- curline=frame->curline;
- nextline=curline+linelength;
- if (nextline >= framedata+datasize*3)
- nextline=curline;
- while (len) {
- if (frame->curlinepix>=width) {
- frame->curlinepix-=width;
- bline=frame->curpix/width+blineoffset;
- curline+=linelength*2;
- nextline+=linelength*2;
- if (curline >= framedata+datasize*3) {
- frame->curlinepix++;
- curline-=3;
- nextline-=3;
- len--;
- data++;
- frame->curpix++;
- }
- if (nextline >= framedata+datasize*3)
- nextline=curline;
- }
- if ((bline&1)) {
- if ((frame->curlinepix&1)) {
- *(curline+2)=*data;
- *(curline-1)=*data;
- *(nextline+2)=*data;
- *(nextline-1)=*data;
- } else {
- *(curline+1)=
- (*(curline+1)+*data)/2;
- *(curline-2)=
- (*(curline-2)+*data)/2;
- *(nextline+1)=*data;
- *(nextline-2)=*data;
- }
- } else {
- if ((frame->curlinepix&1)) {
- *(curline+1)=
- (*(curline+1)+*data)/2;
- *(curline-2)=
- (*(curline-2)+*data)/2;
- *(nextline+1)=*data;
- *(nextline-2)=*data;
- } else {
- *curline=*data;
- *(curline-3)=*data;
- *nextline=*data;
- *(nextline-3)=*data;
- }
- }
- frame->curlinepix++;
- curline-=3;
- nextline-=3;
- len--;
- data++;
- frame->curpix++;
- }
- frame->curline=curline;
- if (frame->curpix>=datasize) {
- /* Fix the top line */
- framedata+=linelength;
- for (i=0; i<linelength; i++) {
- *--framedata=*(framedata+linelength);
- }
- /* Fix the left side (green is already present) */
- for (i=0; i<se401->cheight; i++) {
- *framedata=*(framedata+3);
- *(framedata+1)=*(framedata+4);
- *(framedata+2)=*(framedata+5);
- framedata+=linelength;
- }
- frame->curpix=0;
- frame->grabstate=FRAME_DONE;
- se401->framecount++;
- se401->readcount++;
- if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
- se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
- }
- }
- }
- static int se401_newframe(struct usb_se401 *se401, int framenr)
- {
- DECLARE_WAITQUEUE(wait, current);
- int errors=0;
- while (se401->streaming &&
- (se401->frame[framenr].grabstate==FRAME_READY ||
- se401->frame[framenr].grabstate==FRAME_GRABBING) ) {
- if(!se401->frame[framenr].curpix) {
- errors++;
- }
- wait_interruptible(
- se401->scratch[se401->scratch_use].state!=BUFFER_READY,
- &se401->wq,
- &wait
- );
- if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
- se401->nullpackets=0;
- info("to many null length packets, restarting capture");
- se401_stop_stream(se401);
- se401_start_stream(se401);
- } else {
- if (se401->scratch[se401->scratch_use].state!=BUFFER_READY) {
- se401->frame[framenr].grabstate=FRAME_ERROR;
- return -EIO;
- }
- se401->scratch[se401->scratch_use].state=BUFFER_BUSY;
- if (se401->format==FMT_JANGGU) {
- decode_JangGu(se401, &se401->scratch[se401->scratch_use]);
- } else {
- decode_bayer(se401, &se401->scratch[se401->scratch_use]);
- }
- se401->scratch[se401->scratch_use].state=BUFFER_UNUSED;
- se401->scratch_use++;
- if (se401->scratch_use>=SE401_NUMSCRATCH)
- se401->scratch_use=0;
- if (errors > SE401_MAX_ERRORS) {
- errors=0;
- info("to much errors, restarting capture");
- se401_stop_stream(se401);
- se401_start_stream(se401);
- }
- }
- }
- if (se401->frame[framenr].grabstate==FRAME_DONE)
- if (se401->enhance)
- enhance_picture(se401->frame[framenr].data, se401->cheight*se401->cwidth*3);
- return 0;
- }
- /****************************************************************************
- *
- * Video4Linux
- *
- ***************************************************************************/
- static int se401_open(struct video_device *dev, int flags)
- {
- struct usb_se401 *se401 = (struct usb_se401 *)dev;
- int err = 0;
- /* we are called with the BKL held */
- MOD_INC_USE_COUNT;
- se401->user=1;
- se401->fbuf=rvmalloc(se401->maxframesize * SE401_NUMFRAMES);
- if(!se401->fbuf) err=-ENOMEM;
- if (err) {
- MOD_DEC_USE_COUNT;
- se401->user = 0;
- }
- return err;
- }
- static void se401_close(struct video_device *dev)
- {
- /* called with BKL held */
- struct usb_se401 *se401 = (struct usb_se401 *)dev;
- int i;
- for (i=0; i<SE401_NUMFRAMES; i++)
- se401->frame[i].grabstate=FRAME_UNUSED;
- if (se401->streaming)
- se401_stop_stream(se401);
- rvfree(se401->fbuf, se401->maxframesize * SE401_NUMFRAMES);
- se401->user=0;
- if (se401->removed) {
- video_unregister_device(&se401->vdev);
- kfree(se401->width);
- kfree(se401->height);
- kfree(se401);
- se401 = NULL;
- info("device unregistered");
- }
- MOD_DEC_USE_COUNT;
- }
- static int se401_init_done(struct video_device *dev)
- {
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- create_proc_se401_cam((struct usb_se401 *)dev);
- #endif
- return 0;
- }
- static long se401_write(struct video_device *dev, const char *buf, unsigned long
- count, int noblock)
- {
- return -EINVAL;
- }
- static int se401_ioctl(struct video_device *vdev, unsigned int cmd, void *arg)
- {
- struct usb_se401 *se401 = (struct usb_se401 *)vdev;
- if (!se401->dev)
- return -EIO;
- switch (cmd) {
- case VIDIOCGCAP:
- {
- struct video_capability b;
- strcpy(b.name, se401->camera_name);
- b.type = VID_TYPE_CAPTURE;
- b.channels = 1;
- b.audios = 0;
- b.maxwidth = se401->width[se401->sizes-1];
- b.maxheight = se401->height[se401->sizes-1];
- b.minwidth = se401->width[0];
- b.minheight = se401->height[0];
- 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 VIDIOCGPICT:
- {
- struct video_picture p;
- se401_get_pict(se401, &p);
- 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;
- if (se401_set_pict(se401, &p))
- return -EINVAL;
- return 0;
- }
- case VIDIOCSWIN:
- {
- struct video_window vw;
- if (copy_from_user(&vw, arg, sizeof(vw)))
- return -EFAULT;
- if (vw.flags)
- return -EINVAL;
- if (vw.clipcount)
- return -EINVAL;
- if (se401_set_size(se401, vw.width, vw.height))
- return -EINVAL;
- return 0;
- }
- case VIDIOCGWIN:
- {
- struct video_window vw;
- vw.x = 0; /* FIXME */
- vw.y = 0;
- vw.chromakey = 0;
- vw.flags = 0;
- vw.clipcount = 0;
- vw.width = se401->cwidth;
- vw.height = se401->cheight;
- if (copy_to_user(arg, &vw, sizeof(vw)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCGMBUF:
- {
- struct video_mbuf vm;
- int i;
- memset(&vm, 0, sizeof(vm));
- vm.size = SE401_NUMFRAMES * se401->maxframesize;
- vm.frames = SE401_NUMFRAMES;
- for (i=0; i<SE401_NUMFRAMES; i++)
- vm.offsets[i] = se401->maxframesize * i;
- if (copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCMCAPTURE:
- {
- struct video_mmap vm;
- if (copy_from_user(&vm, arg, sizeof(vm)))
- return -EFAULT;
- if (vm.format != VIDEO_PALETTE_RGB24)
- return -EINVAL;
- if (vm.frame >= SE401_NUMFRAMES)
- return -EINVAL;
- if (se401->frame[vm.frame].grabstate != FRAME_UNUSED)
- return -EBUSY;
- /* Is this according to the v4l spec??? */
- if (se401_set_size(se401, vm.width, vm.height))
- return -EINVAL;
- se401->frame[vm.frame].grabstate=FRAME_READY;
- if (!se401->streaming)
- se401_start_stream(se401);
- /* Set the picture properties */
- if (se401->framecount==0)
- se401_send_pict(se401);
- /* Calibrate the reset level after a few frames. */
- if (se401->framecount%20==1)
- se401_auto_resetlevel(se401);
- return 0;
- }
- case VIDIOCSYNC:
- {
- int frame, ret=0;
- if (copy_from_user((void *)&frame, arg, sizeof(int)))
- return -EFAULT;
- if(frame <0 || frame >= SE401_NUMFRAMES)
- return -EINVAL;
- ret=se401_newframe(se401, frame);
- se401->frame[frame].grabstate=FRAME_UNUSED;
- return ret;
- }
- case VIDIOCGFBUF:
- {
- struct video_buffer vb;
- memset(&vb, 0, sizeof(vb));
- vb.base = NULL; /* frame buffer not supported, not used */
- if (copy_to_user((void *)arg, (void *)&vb, sizeof(vb)))
- return -EFAULT;
- return 0;
- }
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- return -EINVAL;
- case VIDIOCSFBUF:
- return -EINVAL;
- case VIDIOCGTUNER:
- case VIDIOCSTUNER:
- return -EINVAL;
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- return -EINVAL;
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
- default:
- return -ENOIOCTLCMD;
- } /* end switch */
- return 0;
- }
- static long se401_read(struct video_device *dev, char *buf, unsigned long count,
- int noblock)
- {
- int realcount=count, ret=0;
- struct usb_se401 *se401 = (struct usb_se401 *)dev;
- if (se401->dev == NULL)
- return -EIO;
- if (realcount > se401->cwidth*se401->cheight*3)
- realcount=se401->cwidth*se401->cheight*3;
- /* Shouldn't happen: */
- if (se401->frame[0].grabstate==FRAME_GRABBING)
- return -EBUSY;
- se401->frame[0].grabstate=FRAME_READY;
- se401->frame[1].grabstate=FRAME_UNUSED;
- se401->curframe=0;
- if (!se401->streaming)
- se401_start_stream(se401);
- /* Set the picture properties */
- if (se401->framecount==0)
- se401_send_pict(se401);
- /* Calibrate the reset level after a few frames. */
- if (se401->framecount%20==1)
- se401_auto_resetlevel(se401);
- ret=se401_newframe(se401, 0);
- se401->frame[0].grabstate=FRAME_UNUSED;
- if (ret)
- return ret;
- if (copy_to_user(buf, se401->frame[0].data, realcount))
- return -EFAULT;
- return realcount;
- }
- static int se401_mmap(struct video_device *dev, const char *adr,
- unsigned long size)
- {
- struct usb_se401 *se401 = (struct usb_se401 *)dev;
- unsigned long start = (unsigned long)adr;
- unsigned long page, pos;
- down(&se401->lock);
- if (se401->dev == NULL) {
- up(&se401->lock);
- return -EIO;
- }
- if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) {
- up(&se401->lock);
- return -EINVAL;
- }
- pos = (unsigned long)se401->fbuf;
- while (size > 0) {
- page = kvirt_to_pa(pos);
- if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) {
- up(&se401->lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
- }
- up(&se401->lock);
- return 0;
- }
- static struct video_device se401_template = {
- name: "se401 USB camera",
- type: VID_TYPE_CAPTURE,
- hardware: VID_HARDWARE_SE401,
- open: se401_open,
- close: se401_close,
- read: se401_read,
- write: se401_write,
- ioctl: se401_ioctl,
- mmap: se401_mmap,
- initialize: se401_init_done,
- };
- /***************************/
- static int se401_init(struct usb_se401 *se401)
- {
- int i=0, rc;
- unsigned char cp[0x40];
- char temp[200];
- /* led on */
- se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
- /* get camera descriptor */
- rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp));
- if (cp[1]!=0x41) {
- err("Wrong descriptor type");
- return 1;
- }
- sprintf (temp, "ExtraFeatures: %d", cp[3]);
- se401->sizes=cp[4]+cp[5]*256;
- se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
- se401->height=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
- for (i=0; i<se401->sizes; i++) {
- se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256;
- se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256;
- }
- sprintf (temp, "%s Sizes:", temp);
- for (i=0; i<se401->sizes; i++) {
- sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]);
- }
- info("%s", temp);
- se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3;
- rc=se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp));
- se401->cwidth=cp[0]+cp[1]*256;
- rc=se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp));
- se401->cheight=cp[0]+cp[1]*256;
- if (!cp[2] && SE401_FORMAT_BAYER) {
- err("Bayer format not supported!");
- return 1;
- }
- /* set output mode (BAYER) */
- se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE, SE401_FORMAT_BAYER, NULL, 0);
- rc=se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp));
- se401->brightness=cp[0]+cp[1]*256;
- /* some default values */
- se401->resetlevel=0x2d;
- se401->rgain=0x20;
- se401->ggain=0x20;
- se401->bgain=0x20;
- se401_set_exposure(se401, 20000);
- se401->palette=VIDEO_PALETTE_RGB24;
- se401->enhance=1;
- se401->dropped=0;
- se401->error=0;
- se401->framecount=0;
- se401->readcount=0;
- /* Start interrupt transfers for snapshot button */
- se401->inturb=usb_alloc_urb(0);
- if (!se401->inturb) {
- info("Allocation of inturb failed");
- return 1;
- }
- FILL_INT_URB(se401->inturb, se401->dev,
- usb_rcvintpipe(se401->dev, SE401_BUTTON_ENDPOINT),
- &se401->button, sizeof(se401->button),
- se401_button_irq,
- se401,
- HZ/10
- );
- if (usb_submit_urb(se401->inturb)) {
- info("int urb burned down");
- return 1;
- }
- /* Flash the led */
- se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0);
- se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0);
- return 0;
- }
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 0)
- static void* se401_probe(struct usb_device *dev, unsigned int ifnum)
- #else
- static void* __devinit se401_probe(struct usb_device *dev, unsigned int ifnum,
- const struct usb_device_id *id)
- #endif
- {
- struct usb_interface_descriptor *interface;
- struct usb_se401 *se401;
- char *camera_name=NULL;
- /* We don't handle multi-config cameras */
- if (dev->descriptor.bNumConfigurations != 1)
- return NULL;
- interface = &dev->actconfig->interface[ifnum].altsetting[0];
- /* Is it an se401? */
- if (dev->descriptor.idVendor == 0x03e8 &&
- dev->descriptor.idProduct == 0x0004) {
- camera_name="Endpoints/Aox SE401";
- } else if (dev->descriptor.idVendor == 0x0471 &&
- dev->descriptor.idProduct == 0x030b) {
- camera_name="Philips PCVC665K";
- } else if (dev->descriptor.idVendor == 0x047d &&
- dev->descriptor.idProduct == 0x5001) {
- camera_name="Kensington VideoCAM 67014";
- } else if (dev->descriptor.idVendor == 0x047d &&
- dev->descriptor.idProduct == 0x5002) {
- camera_name="Kensington VideoCAM 6701(5/7)";
- } else if (dev->descriptor.idVendor == 0x047d &&
- dev->descriptor.idProduct == 0x5003) {
- camera_name="Kensington VideoCAM 67016";
- } else
- return NULL;
- /* Checking vendor/product should be enough, but what the hell */
- if (interface->bInterfaceClass != 0x00)
- return NULL;
- if (interface->bInterfaceSubClass != 0x00)
- return NULL;
- /* We found one */
- info("SE401 camera found: %s", camera_name);
- if ((se401 = kmalloc(sizeof(*se401), GFP_KERNEL)) == NULL) {
- err("couldn't kmalloc se401 struct");
- return NULL;
- }
- memset(se401, 0, sizeof(*se401));
- se401->dev = dev;
- se401->iface = interface->bInterfaceNumber;
- se401->camera_name = camera_name;
- info("firmware version: %02x", dev->descriptor.bcdDevice & 255);
- if (se401_init(se401)) {
- kfree(se401);
- return NULL;
- }
- memcpy(&se401->vdev, &se401_template, sizeof(se401_template));
- memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name));
- init_waitqueue_head(&se401->wq);
- init_MUTEX(&se401->lock);
- wmb();
- if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
- kfree(se401);
- err("video_register_device failed");
- return NULL;
- }
- info("registered new video device: video%d", se401->vdev.minor);
- return se401;
- }
- static void se401_disconnect(struct usb_device *dev, void *ptr)
- {
- struct usb_se401 *se401 = (struct usb_se401 *) ptr;
- lock_kernel();
- /* We don't want people trying to open up the device */
- if (!se401->user){
- video_unregister_device(&se401->vdev);
- usb_se401_remove_disconnected(se401);
- } else {
- se401->removed = 1;
- }
- unlock_kernel();
- }
- static inline void usb_se401_remove_disconnected (struct usb_se401 *se401)
- {
- int i;
- se401->dev = NULL;
- se401->frame[0].grabstate = FRAME_ERROR;
- se401->frame[1].grabstate = FRAME_ERROR;
- se401->streaming = 0;
- wake_up_interruptible(&se401->wq);
- for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) {
- se401->urb[i]->next = NULL;
- usb_unlink_urb(se401->urb[i]);
- usb_free_urb(se401->urb[i]);
- se401->urb[i] = NULL;
- kfree(se401->sbuf[i].data);
- }
- for (i=0; i<SE401_NUMSCRATCH; i++) if (se401->scratch[i].data) {
- kfree(se401->scratch[i].data);
- }
- if (se401->inturb) {
- usb_unlink_urb(se401->inturb);
- usb_free_urb(se401->inturb);
- }
- info("%s disconnected", se401->camera_name);
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- destroy_proc_se401_cam(se401);
- #endif
- /* Free the memory */
- kfree(se401->width);
- kfree(se401->height);
- kfree(se401);
- }
- static struct usb_driver se401_driver = {
- name: "se401",
- #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 3, 0)
- id_table: device_table,
- #endif
- probe: se401_probe,
- disconnect: se401_disconnect
- };
- /****************************************************************************
- *
- * Module routines
- *
- ***************************************************************************/
- static int __init usb_se401_init(void)
- {
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- proc_se401_create();
- #endif
- info("SE401 usb camera driver version %s registering", version);
- if (flickerless)
- if (flickerless!=50 && flickerless!=60) {
- info("Invallid flickerless value, use 0, 50 or 60.");
- return -1;
- }
- if (usb_register(&se401_driver) < 0)
- return -1;
- return 0;
- }
- static void __exit usb_se401_exit(void)
- {
- usb_deregister(&se401_driver);
- info("SE401 driver deregistered");
- #if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS)
- proc_se401_destroy();
- #endif
- }
- module_init(usb_se401_init);
- module_exit(usb_se401_exit);