/*
* STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
- *
- * Thanks to STMicroelectronics for information on the usb commands, and
- * to Steve Miller at STM for his help and encouragement while I was
+ *
+ * Thanks to STMicroelectronics for information on the usb commands, and
+ * to Steve Miller at STM for his help and encouragement while I was
* writing this driver.
*
- * This driver is based heavily on the
+ * This driver is based heavily on the
* 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
* along with this program; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * History:
- * ver 0.1 October, 2001. Initial attempt.
+ * History:
+ * ver 0.1 October, 2001. Initial attempt.
*
* ver 0.2 November, 2001. Fixed asbility to resize, added brightness
* function, made more stable (?)
*
- * ver 0.21 Nov, 2001. Added gamma correction and white balance,
- * due to Alexander Schwartz. Still trying to
+ * ver 0.21 Nov, 2001. Added gamma correction and white balance,
+ * due to Alexander Schwartz. Still trying to
* improve stablility. Moved stuff into stv680.h
*
- * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet,
- * mike@easysw.com) from GIMP, also used in pencam.
+ * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet,
+ * mike@easysw.com) from GIMP, also used in pencam.
* Simple, fast, good integer math routine.
*
* ver 0.23 Dec, 2001 (gkh)
* Lindent, and did other minor tweaks to get
* things to work properly with 2.5.1
*
- * ver 0.24 Jan, 2002 (kjs)
+ * ver 0.24 Jan, 2002 (kjs)
* Fixed the problem with webcam crashing after
- * two pictures. Changed the way pic is halved to
- * improve quality. Got rid of green line around
- * frame. Fix brightness reset when changing size
+ * two pictures. Changed the way pic is halved to
+ * improve quality. Got rid of green line around
+ * frame. Fix brightness reset when changing size
* bug. Adjusted gamma filters slightly.
*
* ver 0.25 Jan, 2002 (kjs)
#include <linux/errno.h>
#include <linux/videodev.h>
#include <linux/usb.h>
-#include <linux/mutex.h>
#include "stv680.h"
unsigned char *buffer;
unsigned long int bufsize;
- buffer = kzalloc (40, GFP_KERNEL);
+ buffer = kmalloc (40, GFP_KERNEL);
if (buffer == NULL) {
PDEBUG (0, "STV(e): Out of (small buf) memory");
return -1;
}
+ memset (buffer, 0, 40);
udelay (100);
/* set config 1, interface 0, alternate 0 */
PDEBUG (1, "STV(i): swapRGB is (forced) ON");
else if (swapRGB_on == -1)
PDEBUG (1, "STV(i): swapRGB is (forced) OFF");
-
+
if (stv_set_video_mode (stv680) < 0) {
PDEBUG (0, "STV(e): Could not set video mode in stv_init");
return -1;
if (stv680->brightness != p->brightness) {
stv680->chgbright = 1;
stv680->brightness = p->brightness;
- }
+ }
stv680->whiteness = p->whiteness; /* greyscale */
stv680->colour = p->colour;
case BUFFER_UNUSED:
memcpy (stv680->scratch[stv680->scratch_next].data,
- (unsigned char *) urb->transfer_buffer, length);
+ (unsigned char *) urb->transfer_buffer, length);
stv680->scratch[stv680->scratch_next].state = BUFFER_READY;
stv680->scratch[stv680->scratch_next].length = length;
if (waitqueue_active (&stv680->wq)) {
PDEBUG (1, "STV(e): request for non-supported size: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight);
return 1;
}
-
+
/* Stop a current stream and start it again at the new size */
if (wasstreaming)
stv680_stop_stream (stv680);
/*
* STV0680 Vision Camera Chipset Driver
- * Copyright (C) 2000 Adam Harrison <adam@antispin.org>
+ * Copyright (C) 2000 Adam Harrison <adam@antispin.org>
*/
#define RED 0
colour = 2;
break;
}
- i = (y * vw + x) * 3;
+ i = (y * vw + x) * 3;
*(output + i + colour) = (unsigned char) p;
} /* for x */
/****** gamma correction plus hardcoded white balance */
/* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code.
- Correction values red[], green[], blue[], are generated by
- (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255.
- White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and
+ Correction values red[], green[], blue[], are generated by
+ (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255.
+ White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and
converted to unsigned char. Values are in stv680.h */
for (y = 0; y < vh; y++) {
unsigned long size = vma->vm_end-vma->vm_start;
unsigned long page, pos;
- mutex_lock(&stv680->lock);
+ down (&stv680->lock);
if (stv680->udev == NULL) {
- mutex_unlock(&stv680->lock);
+ up (&stv680->lock);
return -EIO;
}
if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1)
& ~(PAGE_SIZE - 1))) {
- mutex_unlock(&stv680->lock);
+ up (&stv680->lock);
return -EINVAL;
}
pos = (unsigned long) stv680->fbuf;
while (size > 0) {
page = vmalloc_to_pfn((void *)pos);
if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
- mutex_unlock(&stv680->lock);
+ up (&stv680->lock);
return -EAGAIN;
}
start += PAGE_SIZE;
else
size = 0;
}
- mutex_unlock(&stv680->lock);
+ up (&stv680->lock);
return 0;
}
goto error;
}
/* We found one */
- if ((stv680 = kzalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
+ if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct.");
retval = -ENOMEM;
goto error;
}
+ memset (stv680, 0, sizeof (*stv680));
+
stv680->udev = dev;
stv680->camera_name = camera_name;
memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name));
init_waitqueue_head (&stv680->wq);
- mutex_init (&stv680->lock);
+ init_MUTEX (&stv680->lock);
wmb ();
if (video_register_device (stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
git://git.onelab.eu / linux-2.6.git / blobdiff