*
* The parport parameter controls which parports will be scanned.
* Scanning all parports causes some printers to print a garbage page.
- * -- March 14, 1999 Billy Donahue <billy@escape.com>
+ * -- March 14, 1999 Billy Donahue <billy@escape.com>
*
* Fixed data format to BGR, added force_rgb parameter. Added missing
* parport_unregister_driver() on module removal.
#include <linux/parport.h>
#include <linux/sched.h>
#include <linux/videodev.h>
-#include <asm/semaphore.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/mutex.h>
+#include <linux/jiffies.h>
+
#include <asm/uaccess.h>
struct qcam_device {
int contrast, brightness, whitebal;
int top, left;
unsigned int bidirectional;
- struct semaphore lock;
+ unsigned long in_use;
+ struct mutex lock;
};
/* cameras maximum */
static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
static int probe = 2;
-static int force_rgb = 0;
+static int force_rgb;
static int video_nr = -1;
static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i)
return (parport_read_data(qcam->pport) & 0x1)?1:0;
}
-static unsigned int qcam_await_ready1(struct qcam_device *qcam,
+static unsigned int qcam_await_ready1(struct qcam_device *qcam,
int value)
{
unsigned long oldjiffies = jiffies;
unsigned int i;
- for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
+ for (oldjiffies = jiffies;
+ time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); )
if (qcam_ready1(qcam) == value)
return 0;
- /* If the camera didn't respond within 1/25 second, poll slowly
+ /* If the camera didn't respond within 1/25 second, poll slowly
for a while. */
for (i = 0; i < 50; i++)
{
unsigned long oldjiffies = jiffies;
unsigned int i;
- for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
+ for (oldjiffies = jiffies;
+ time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); )
if (qcam_ready2(qcam) == value)
return 0;
- /* If the camera didn't respond within 1/25 second, poll slowly
+ /* If the camera didn't respond within 1/25 second, poll slowly
for a while. */
for (i = 0; i < 50; i++)
{
unsigned int idata;
parport_write_data(qcam->pport, data);
idata = qcam_read_data(qcam);
- if (data != idata)
+ if (data != idata)
{
- printk(KERN_WARNING "cqcam: sent %x but received %x\n", data,
+ printk(KERN_WARNING "cqcam: sent %x but received %x\n", data,
idata);
return 1;
- }
+ }
return 0;
}
no device was found". Fix this one day. */
if (qcam->pport->probe_info[0].class == PARPORT_CLASS_MEDIA
&& qcam->pport->probe_info[0].model
- && !strcmp(qcam->pdev->port->probe_info[0].model,
+ && !strcmp(qcam->pdev->port->probe_info[0].model,
"Color QuickCam 2.0")) {
printk(KERN_DEBUG "QuickCam: Found by IEEE1284 probe.\n");
return 1;
}
-
+
if (probe < 2)
return 0;
/* look for a heartbeat */
ostat = stat = parport_read_status(qcam->pport);
- for (i=0; i<250; i++)
+ for (i=0; i<250; i++)
{
mdelay(1);
stat = parport_read_status(qcam->pport);
- if (ostat != stat)
+ if (ostat != stat)
{
if (++count >= 3) return 1;
ostat = stat;
count = 0;
ostat = stat = parport_read_status(qcam->pport);
- for (i=0; i<250; i++)
+ for (i=0; i<250; i++)
{
mdelay(1);
stat = parport_read_status(qcam->pport);
- if (ostat != stat)
+ if (ostat != stat)
{
if (++count >= 3) return 1;
ostat = stat;
parport_write_control(qcam->pport, 0x8);
mdelay(1);
parport_write_control(qcam->pport, 0xc);
- mdelay(1);
+ mdelay(1);
}
/* Reset the QuickCam and program for brightness, contrast,
qc_reset(q);
/* Set the brightness. */
- qcam_set(q, 11, q->brightness);
+ qcam_set(q, 11, q->brightness);
/* Set the height and width. These refer to the actual
CCD area *before* applying the selected decimation. */
/* Set contrast and white balance. */
qcam_set(q, 0x19, q->contrast);
qcam_set(q, 0x1f, q->whitebal);
-
+
/* Set the speed. */
qcam_set(q, 45, 2);
}
-/* Read some bytes from the camera and put them in the buffer.
+/* Read some bytes from the camera and put them in the buffer.
nbytes should be a multiple of 3, because bidirectional mode gives
us three bytes at a time. */
if (qcam_set(q, 7, (q->mode | (is_bi_dir?1:0)) + 1))
return -EIO;
-
+
lines = q->height;
pixelsperline = q->width;
bitsperxfer = (is_bi_dir) ? 24 : 8;
* Video4linux interfacing
*/
-static int qcam_do_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg)
+static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct qcam_device *qcam=(struct qcam_device *)dev;
-
+
switch(cmd)
{
case VIDIOCGCAP:
*/
if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24)
return -EINVAL;
-
+
/*
* Now load the camera.
*/
qcam->contrast = p->contrast>>8;
qcam->whitebal = p->whiteness>>8;
- down(&qcam->lock);
+ mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
- qc_setup(qcam);
+ qc_setup(qcam);
parport_release(qcam->pdev);
- up(&qcam->lock);
+ mutex_unlock(&qcam->lock);
return 0;
}
case VIDIOCSWIN:
return -EINVAL;
if(vw->width<80||vw->width>320)
return -EINVAL;
-
+
qcam->width = 80;
qcam->height = 60;
qcam->mode = QC_DECIMATION_4;
-
+
if(vw->width>=160 && vw->height>=120)
{
qcam->width = 160;
qcam->mode = QC_BILLIONS | QC_DECIMATION_1;
}
#endif
- /* Ok we figured out what to use from our
+ /* Ok we figured out what to use from our
wide choice */
- down(&qcam->lock);
+ mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
- up(&qcam->lock);
+ mutex_unlock(&qcam->lock);
return 0;
}
case VIDIOCGWIN:
return 0;
}
-static int qcam_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long qcam_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
- return video_usercopy(inode, file, cmd, arg, qcam_do_ioctl);
+ return video_usercopy(file, cmd, arg, qcam_do_ioctl);
}
static ssize_t qcam_read(struct file *file, char __user *buf,
struct qcam_device *qcam=(struct qcam_device *)v;
int len;
- down(&qcam->lock);
+ mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
/* Probably should have a semaphore against multiple users */
- len = qc_capture(qcam, buf,count);
+ len = qc_capture(qcam, buf,count);
parport_release(qcam->pdev);
- up(&qcam->lock);
+ mutex_unlock(&qcam->lock);
return len;
}
+static int qcam_exclusive_open(struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+}
+
+static int qcam_exclusive_release(struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ clear_bit(0, &qcam->in_use);
+ return 0;
+}
+
/* video device template */
-static struct file_operations qcam_fops = {
+static const struct v4l2_file_operations qcam_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = qcam_exclusive_open,
+ .release = qcam_exclusive_release,
.ioctl = qcam_ioctl,
.read = qcam_read,
- .llseek = no_llseek,
};
static struct video_device qcam_template=
{
- .owner = THIS_MODULE,
.name = "Colour QuickCam",
- .type = VID_TYPE_CAPTURE,
- .hardware = VID_HARDWARE_QCAM_C,
.fops = &qcam_fops,
+ .release = video_device_release_empty,
};
/* Initialize the QuickCam driver control structure. */
static struct qcam_device *qcam_init(struct parport *port)
{
struct qcam_device *q;
-
+
q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
if(q==NULL)
return NULL;
q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE)?1:0;
- if (q->pdev == NULL)
+ if (q->pdev == NULL)
{
printk(KERN_ERR "c-qcam: couldn't register for %s.\n",
port->name);
kfree(q);
return NULL;
}
-
+
memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
- init_MUTEX(&q->lock);
+ mutex_init(&q->lock);
q->width = q->ccd_width = 320;
q->height = q->ccd_height = 240;
q->mode = QC_MILLIONS | QC_DECIMATION_1;
}
static struct qcam_device *qcams[MAX_CAMS];
-static unsigned int num_cams = 0;
+static unsigned int num_cams;
static int init_cqcam(struct parport *port)
{
qcam = qcam_init(port);
if (qcam==NULL)
return -ENODEV;
-
+
parport_claim_or_block(qcam->pdev);
qc_reset(qcam);
-
+
if (probe && qc_detect(qcam)==0)
{
parport_release(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
-
- if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr)==-1)
- {
+
+ if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
printk(KERN_ERR "Unable to register Colour QuickCam on %s\n",
qcam->pport->name);
parport_unregister_device(qcam->pdev);
return -ENODEV;
}
- printk(KERN_INFO "video%d: Colour QuickCam found on %s\n",
- qcam->vdev.minor, qcam->pport->name);
-
+ printk(KERN_INFO "video%d: Colour QuickCam found on %s\n",
+ qcam->vdev.num, qcam->pport->name);
+
qcams[num_cams++] = qcam;
return 0;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff