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path: root/drivers/staging/se401/se401.c
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Diffstat (limited to 'drivers/staging/se401/se401.c')
-rw-r--r--drivers/staging/se401/se401.c1492
1 files changed, 1492 insertions, 0 deletions
diff --git a/drivers/staging/se401/se401.c b/drivers/staging/se401/se401.c
new file mode 100644
index 000000000000..41360d7c3e96
--- /dev/null
+++ b/drivers/staging/se401/se401.c
@@ -0,0 +1,1492 @@
+/*
+ * 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);
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-05 02:19:56 +0000