diff options
Diffstat (limited to 'drivers/media/video/se401.c')
| -rw-r--r-- | drivers/media/video/se401.c | 1492 |
1 files changed, 0 insertions, 1492 deletions
diff --git a/drivers/media/video/se401.c b/drivers/media/video/se401.c deleted file mode 100644 index 41360d7c3e9..00000000000 --- a/drivers/media/video/se401.c +++ /dev/null @@ -1,1492 +0,0 @@ -/* - * 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[] = "0.24"; - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/vmalloc.h> -#include <linux/slab.h> -#include <linux/pagemap.h> -#include <linux/usb.h> -#include "se401.h" - -static int flickerless; -static int video_nr = -1; - -static 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); - -MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>"); -MODULE_DESCRIPTION("SE401 USB Camera Driver"); -MODULE_LICENSE("GPL"); -module_param(flickerless, int, 0); -MODULE_PARM_DESC(flickerless, - "Net frequency to adjust exposure time to (0/50/60)"); -module_param(video_nr, int, 0); - -static struct usb_driver se401_driver; - - -/********************************************************************** - * - * Memory management - * - **********************************************************************/ -static void *rvmalloc(unsigned long size) -{ - void *mem; - unsigned long adr; - - size = PAGE_ALIGN(size); - 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) { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - return mem; -} - -static void rvfree(void *mem, unsigned long size) -{ - unsigned long adr; - - if (!mem) - return; - - adr = (unsigned long) mem; - while ((long) size > 0) { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - vfree(mem); -} - - - -/**************************************************************************** - * - * 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, - 1000 - ); -} - -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, - 1000 - ); -} - -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, - 1000 - ); - return cp[0]+cp[1]*256; -} - -/**************************************************************************** - * - * Camera control - * - ***************************************************************************/ - - -static int se401_send_pict(struct usb_se401 *se401) -{ - /* integration time low */ - se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l); - /* integration time mid */ - se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m); - /* integration time mid */ - se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h); - /* reset level value */ - se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel); - /* red color gain */ - se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain); - /* green color gain */ - se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain); - /* blue color gain */ - se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain); - - 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; - int status; - - if (!se401->dev) { - dev_info(&urb->dev->dev, "device vapourished\n"); - return; - } - - switch (urb->status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", - __func__, urb->status); - return; - default: - dbg("%s - nonzero urb status received: %d", - __func__, urb->status); - goto exit; - } - - if (urb->actual_length >= 2) - if (se401->button) - se401->buttonpressed = 1; -exit: - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) - err("%s - usb_submit_urb failed with result %d", - __func__, status); -} - -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) { - dev_info(&urb->dev->dev, "device vapourished\n"); - 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, GFP_KERNEL)) - dev_info(&urb->dev->dev, "urb burned down\n"); - 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; -} - -/* - 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) -{ - struct urb *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 */ - /* windowed + pix intg */ - se401_set_feature(se401, HV7131_REG_MODE_B, 0x05); - 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); - if (!se401->sbuf[i].data) { - for (i = i - 1; i >= 0; i--) { - kfree(se401->sbuf[i].data); - se401->sbuf[i].data = NULL; - } - return -ENOMEM; - } - } - - 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); - if (!se401->scratch[i].data) { - for (i = i - 1; i >= 0; i--) { - kfree(se401->scratch[i].data); - se401->scratch[i].data = NULL; - } - goto nomem_sbuf; - } - se401->scratch[i].state = BUFFER_UNUSED; - } - - for (i = 0; i < SE401_NUMSBUF; i++) { - urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - for (i = i - 1; i >= 0; i--) { - usb_kill_urb(se401->urb[i]); - usb_free_urb(se401->urb[i]); - se401->urb[i] = NULL; - } - goto nomem_scratch; - } - - usb_fill_bulk_urb(urb, se401->dev, - usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT), - se401->sbuf[i].data, SE401_PACKETSIZE, - se401_video_irq, - se401); - - se401->urb[i] = urb; - - err = usb_submit_urb(se401->urb[i], GFP_KERNEL); - if (err) - err("urb burned down"); - } - - se401->framecount = 0; - - return 0; - - nomem_scratch: - for (i = 0; i < SE401_NUMSCRATCH; i++) { - kfree(se401->scratch[i].data); - se401->scratch[i].data = NULL; - } - nomem_sbuf: - for (i = 0; i < SE401_NUMSBUF; i++) { - kfree(se401->sbuf[i].data); - se401->sbuf[i].data = NULL; - } - return -ENOMEM; -} - -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]) { - usb_kill_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. - Basically 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; - frame++; - } -} - -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 = *(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; - dev_info(&se401->dev->dev, - "too many null length packets, restarting capture\n"); - 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; - dev_info(&se401->dev->dev, - "too many errors, restarting capture\n"); - 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; -} - -static void usb_se401_remove_disconnected(struct usb_se401 *se401) -{ - int i; - - se401->dev = NULL; - - for (i = 0; i < SE401_NUMSBUF; i++) - if (se401->urb[i]) { - usb_kill_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); - - if (se401->inturb) { - usb_kill_urb(se401->inturb); - usb_free_urb(se401->inturb); - } - dev_info(&se401->dev->dev, "%s disconnected", se401->camera_name); - - /* Free the memory */ - kfree(se401->width); - kfree(se401->height); - kfree(se401); -} - - - -/**************************************************************************** - * - * Video4Linux - * - ***************************************************************************/ - - -static int se401_open(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct usb_se401 *se401 = (struct usb_se401 *)dev; - int err = 0; - - mutex_lock(&se401->lock); - if (se401->user) { - mutex_unlock(&se401->lock); - return -EBUSY; - } - se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES); - if (se401->fbuf) - file->private_data = dev; - else - err = -ENOMEM; - se401->user = !err; - mutex_unlock(&se401->lock); - - return err; -} - -static int se401_close(struct file *file) -{ - struct video_device *dev = file->private_data; - struct usb_se401 *se401 = (struct usb_se401 *)dev; - int i; - - rvfree(se401->fbuf, se401->maxframesize * SE401_NUMFRAMES); - if (se401->removed) { - dev_info(&se401->dev->dev, "device unregistered\n"); - usb_se401_remove_disconnected(se401); - } else { - for (i = 0; i < SE401_NUMFRAMES; i++) - se401->frame[i].grabstate = FRAME_UNUSED; - if (se401->streaming) - se401_stop_stream(se401); - se401->user = 0; - } - file->private_data = NULL; - return 0; -} - -static long se401_do_ioctl(struct file *file, unsigned int cmd, void *arg) -{ - struct video_device *vdev = file->private_data; - struct usb_se401 *se401 = (struct usb_se401 *)vdev; - - if (!se401->dev) - return -EIO; - - switch (cmd) { - case VIDIOCGCAP: - { - struct video_capability *b = arg; - 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]; - return 0; - } - case VIDIOCGCHAN: - { - struct video_channel *v = arg; - - if (v->channel != 0) - return -EINVAL; - v->flags = 0; - v->tuners = 0; - v->type = VIDEO_TYPE_CAMERA; - strcpy(v->name, "Camera"); - return 0; - } - case VIDIOCSCHAN: - { - struct video_channel *v = arg; - - if (v->channel != 0) - return -EINVAL; - return 0; - } - case VIDIOCGPICT: - { - struct video_picture *p = arg; - - se401_get_pict(se401, p); - return 0; - } - case VIDIOCSPICT: - { - struct video_picture *p = arg; - - if (se401_set_pict(se401, p)) - return -EINVAL; - return 0; - } - case VIDIOCSWIN: - { - struct video_window *vw = arg; - - 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 = arg; - - vw->x = 0; /* FIXME */ - vw->y = 0; - vw->chromakey = 0; - vw->flags = 0; - vw->clipcount = 0; - vw->width = se401->cwidth; - vw->height = se401->cheight; - return 0; - } - case VIDIOCGMBUF: - { - struct video_mbuf *vm = arg; - 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; - return 0; - } - case VIDIOCMCAPTURE: - { - struct video_mmap *vm = arg; - - 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 = arg; - int ret = 0; - - 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 = arg; - - memset(vb, 0, sizeof(*vb)); - 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_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) -{ - return video_usercopy(file, cmd, arg, se401_do_ioctl); -} - -static ssize_t se401_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - int realcount = count, ret = 0; - struct video_device *dev = file->private_data; - 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 file *file, struct vm_area_struct *vma) -{ - struct video_device *dev = file->private_data; - struct usb_se401 *se401 = (struct usb_se401 *)dev; - unsigned long start = vma->vm_start; - unsigned long size = vma->vm_end-vma->vm_start; - unsigned long page, pos; - - mutex_lock(&se401->lock); - - if (se401->dev == NULL) { - mutex_unlock(&se401->lock); - return -EIO; - } - if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) - & ~(PAGE_SIZE - 1))) { - mutex_unlock(&se401->lock); - return -EINVAL; - } - pos = (unsigned long)se401->fbuf; - while (size > 0) { - page = vmalloc_to_pfn((void *)pos); - if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { - mutex_unlock(&se401->lock); - return -EAGAIN; - } - start += PAGE_SIZE; - pos += PAGE_SIZE; - if (size > PAGE_SIZE) - size -= PAGE_SIZE; - else - size = 0; - } - mutex_unlock(&se401->lock); - - return 0; -} - -static const struct v4l2_file_operations se401_fops = { - .owner = THIS_MODULE, - .open = se401_open, - .release = se401_close, - .read = se401_read, - .mmap = se401_mmap, - .ioctl = se401_ioctl, -}; -static struct video_device se401_template = { - .name = "se401 USB camera", - .fops = &se401_fops, - .release = video_device_release_empty, -}; - - - -/***************************/ -static int se401_init(struct usb_se401 *se401, int button) -{ - int i = 0, rc; - unsigned char cp[0x40]; - char temp[200]; - int slen; - - /* 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; - } - slen = snprintf(temp, 200, "ExtraFeatures: %d", cp[3]); - - se401->sizes = cp[4] + cp[5] * 256; - se401->width = kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); - if (!se401->width) - return 1; - se401->height = kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); - if (!se401->height) { - kfree(se401->width); - return 1; - } - 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; - } - slen += snprintf(temp + slen, 200 - slen, " Sizes:"); - for (i = 0; i < se401->sizes; i++) { - slen += snprintf(temp + slen, 200 - slen, - " %dx%d", se401->width[i], se401->height[i]); - } - dev_info(&se401->dev->dev, "%s\n", 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 */ - if (button) { - se401->inturb = usb_alloc_urb(0, GFP_KERNEL); - if (!se401->inturb) { - dev_info(&se401->dev->dev, - "Allocation of inturb failed\n"); - return 1; - } - usb_fill_int_urb(se401->inturb, se401->dev, - usb_rcvintpipe(se401->dev, SE401_BUTTON_ENDPOINT), - &se401->button, sizeof(se401->button), - se401_button_irq, - se401, - 8 - ); - if (usb_submit_urb(se401->inturb, GFP_KERNEL)) { - dev_info(&se401->dev->dev, "int urb burned down\n"); - return 1; - } - } else - se401->inturb = NULL; - - /* 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; -} - -static int se401_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *dev = interface_to_usbdev(intf); - struct usb_interface_descriptor *interface; - struct usb_se401 *se401; - char *camera_name = NULL; - int button = 1; - - /* We don't handle multi-config cameras */ - if (dev->descriptor.bNumConfigurations != 1) - return -ENODEV; - - interface = &intf->cur_altsetting->desc; - - /* Is it an se401? */ - if (le16_to_cpu(dev->descriptor.idVendor) == 0x03e8 && - le16_to_cpu(dev->descriptor.idProduct) == 0x0004) { - camera_name = "Endpoints/Aox SE401"; - } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x0471 && - le16_to_cpu(dev->descriptor.idProduct) == 0x030b) { - camera_name = "Philips PCVC665K"; - } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && - le16_to_cpu(dev->descriptor.idProduct) == 0x5001) { - camera_name = "Kensington VideoCAM 67014"; - } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && - le16_to_cpu(dev->descriptor.idProduct) == 0x5002) { - camera_name = "Kensington VideoCAM 6701(5/7)"; - } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && - le16_to_cpu(dev->descriptor.idProduct) == 0x5003) { - camera_name = "Kensington VideoCAM 67016"; - button = 0; - } else - return -ENODEV; - - /* Checking vendor/product should be enough, but what the hell */ - if (interface->bInterfaceClass != 0x00) - return -ENODEV; - if (interface->bInterfaceSubClass != 0x00) - return -ENODEV; - - /* We found one */ - dev_info(&intf->dev, "SE401 camera found: %s\n", camera_name); - - se401 = kzalloc(sizeof(*se401), GFP_KERNEL); - if (se401 == NULL) { - err("couldn't kmalloc se401 struct"); - return -ENOMEM; - } - - se401->dev = dev; - se401->iface = interface->bInterfaceNumber; - se401->camera_name = camera_name; - - dev_info(&intf->dev, "firmware version: %02x\n", - le16_to_cpu(dev->descriptor.bcdDevice) & 255); - - if (se401_init(se401, button)) { - kfree(se401); - return -EIO; - } - - memcpy(&se401->vdev, &se401_template, sizeof(se401_template)); - memcpy(se401->vdev.name, se401->camera_name, - strlen(se401->camera_name)); - init_waitqueue_head(&se401->wq); - mutex_init(&se401->lock); - wmb(); - - if (video_register_device(&se401->vdev, - VFL_TYPE_GRABBER, video_nr) < 0) { - kfree(se401); - err("video_register_device failed"); - return -EIO; - } - dev_info(&intf->dev, "registered new video device: %s\n", - video_device_node_name(&se401->vdev)); - - usb_set_intfdata(intf, se401); - return 0; -} - -static void se401_disconnect(struct usb_interface *intf) -{ - struct usb_se401 *se401 = usb_get_intfdata(intf); - - usb_set_intfdata(intf, NULL); - if (se401) { - video_unregister_device(&se401->vdev); - if (!se401->user) - usb_se401_remove_disconnected(se401); - else { - se401->frame[0].grabstate = FRAME_ERROR; - se401->frame[0].grabstate = FRAME_ERROR; - - se401->streaming = 0; - - wake_up_interruptible(&se401->wq); - se401->removed = 1; - } - } -} - -static struct usb_driver se401_driver = { - .name = "se401", - .id_table = device_table, - .probe = se401_probe, - .disconnect = se401_disconnect, -}; - - - -/**************************************************************************** - * - * Module routines - * - ***************************************************************************/ - -static int __init usb_se401_init(void) -{ - printk(KERN_INFO "SE401 usb camera driver version %s registering\n", - version); - if (flickerless) - if (flickerless != 50 && flickerless != 60) { - printk(KERN_ERR "Invallid flickerless value, use 0, 50 or 60.\n"); - return -1; - } - return usb_register(&se401_driver); -} - -static void __exit usb_se401_exit(void) -{ - usb_deregister(&se401_driver); - printk(KERN_INFO "SE401 driver deregistered\frame"); -} - -module_init(usb_se401_init); -module_exit(usb_se401_exit); |