{
/* note: the QC specs refer to the PCAck pin by voltage, not
software level. PC ports have builtin inverters. */
- parport_frob_control(qcam->pport, 8, i?8:0);
+ parport_frob_control(qcam->pport, 8, i ? 8 : 0);
}
static inline unsigned int qcam_ready1(struct qcam_device *qcam)
{
- return (parport_read_status(qcam->pport) & 0x8)?1:0;
+ return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0;
}
static inline unsigned int qcam_ready2(struct qcam_device *qcam)
{
- return (parport_read_data(qcam->pport) & 0x1)?1:0;
+ return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0;
}
static unsigned int qcam_await_ready1(struct qcam_device *qcam,
unsigned int i;
for (oldjiffies = jiffies;
- time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); )
+ 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
for a while. */
- for (i = 0; i < 50; i++)
- {
+ for (i = 0; i < 50; i++) {
if (qcam_ready1(qcam) == value)
return 0;
msleep_interruptible(100);
unsigned int i;
for (oldjiffies = jiffies;
- time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); )
+ 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
for a while. */
- for (i = 0; i < 50; i++)
- {
+ for (i = 0; i < 50; i++) {
if (qcam_ready2(qcam) == value)
return 0;
msleep_interruptible(100);
static int qcam_read_data(struct qcam_device *qcam)
{
unsigned int idata;
+
qcam_set_ack(qcam, 0);
- if (qcam_await_ready1(qcam, 1)) return -1;
+ if (qcam_await_ready1(qcam, 1))
+ return -1;
idata = parport_read_status(qcam->pport) & 0xf0;
qcam_set_ack(qcam, 1);
- if (qcam_await_ready1(qcam, 0)) return -1;
- idata |= (parport_read_status(qcam->pport) >> 4);
+ if (qcam_await_ready1(qcam, 0))
+ return -1;
+ idata |= parport_read_status(qcam->pport) >> 4;
return idata;
}
static int qcam_write_data(struct qcam_device *qcam, unsigned int data)
{
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,
idata);
return 1;
/* 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 (++count >= 3) return 1;
+ 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 (++count >= 3) return 1;
+ if (ostat != stat) {
+ if (++count >= 3)
+ return 1;
ostat = stat;
}
}
{
qc_reset(q);
- /* Set the brightness. */
+ /* Set the brightness. */
qcam_set(q, 11, q->brightness);
/* Set the height and width. These refer to the actual
unsigned int bytes = 0;
qcam_set_ack(q, 0);
- if (q->bidirectional)
- {
+ if (q->bidirectional) {
/* It's a bidirectional port */
- while (bytes < nbytes)
- {
+ while (bytes < nbytes) {
unsigned int lo1, hi1, lo2, hi2;
unsigned char r, g, b;
- if (qcam_await_ready2(q, 1)) return bytes;
+ if (qcam_await_ready2(q, 1))
+ return bytes;
lo1 = parport_read_data(q->pport) >> 1;
hi1 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(q, 1);
- if (qcam_await_ready2(q, 0)) return bytes;
+ if (qcam_await_ready2(q, 0))
+ return bytes;
lo2 = parport_read_data(q->pport) >> 1;
hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(q, 0);
- r = (lo1 | ((hi1 & 1)<<7));
- g = ((hi1 & 0x1e)<<3) | ((hi2 & 0x1e)>>1);
- b = (lo2 | ((hi2 & 1)<<7));
+ r = lo1 | ((hi1 & 1) << 7);
+ g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1);
+ b = lo2 | ((hi2 & 1) << 7);
if (force_rgb) {
buf[bytes++] = r;
buf[bytes++] = g;
buf[bytes++] = r;
}
}
- }
- else
- {
+ } else {
/* It's a unidirectional port */
int i = 0, n = bytes;
unsigned char rgb[3];
- while (bytes < nbytes)
- {
+ while (bytes < nbytes) {
unsigned int hi, lo;
- if (qcam_await_ready1(q, 1)) return bytes;
+ if (qcam_await_ready1(q, 1))
+ return bytes;
hi = (parport_read_status(q->pport) & 0xf0);
qcam_set_ack(q, 1);
- if (qcam_await_ready1(q, 0)) return bytes;
+ if (qcam_await_ready1(q, 0))
+ return bytes;
lo = (parport_read_status(q->pport) & 0xf0);
qcam_set_ack(q, 0);
/* flip some bits */
return -EFAULT;
/* Wait for camera to become ready */
- for (;;)
- {
+ for (;;) {
int i = qcam_get(q, 41);
+
if (i == -1) {
qc_setup(q);
return -EIO;
}
if ((i & 0x80) == 0)
break;
- else
- schedule();
+ schedule();
}
- if (qcam_set(q, 7, (q->mode | (is_bi_dir?1:0)) + 1))
+ 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;
- if (is_bi_dir)
- {
+ if (is_bi_dir) {
/* Turn the port around */
parport_data_reverse(q->pport);
mdelay(3);
wantlen = lines * pixelsperline * 24 / 8;
- while (wantlen)
- {
+ while (wantlen) {
size_t t, s;
- s = (wantlen > BUFSZ)?BUFSZ:wantlen;
+
+ s = (wantlen > BUFSZ) ? BUFSZ : wantlen;
t = qcam_read_bytes(q, tmpbuf, s);
- if (outptr < len)
- {
+ if (outptr < len) {
size_t sz = len - outptr;
- if (sz > t) sz = t;
- if (__copy_to_user(buf+outptr, tmpbuf, sz))
+
+ if (sz > t)
+ sz = t;
+ if (__copy_to_user(buf + outptr, tmpbuf, sz))
break;
outptr += sz;
}
len = outptr;
- if (wantlen)
- {
- printk("qcam: short read.\n");
+ if (wantlen) {
+ printk(KERN_ERR "qcam: short read.\n");
if (is_bi_dir)
parport_data_forward(q->pport);
qc_setup(q);
return len;
}
- if (is_bi_dir)
- {
+ if (is_bi_dir) {
int l;
+
do {
l = qcam_read_bytes(q, tmpbuf, 3);
cond_resched();
} while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
if (force_rgb) {
if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
- printk("qcam: bad EOF\n");
+ printk(KERN_ERR "qcam: bad EOF\n");
} else {
if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
- printk("qcam: bad EOF\n");
+ printk(KERN_ERR "qcam: bad EOF\n");
}
qcam_set_ack(q, 0);
- if (qcam_await_ready1(q, 1))
- {
- printk("qcam: no ack after EOF\n");
+ if (qcam_await_ready1(q, 1)) {
+ printk(KERN_ERR "qcam: no ack after EOF\n");
parport_data_forward(q->pport);
qc_setup(q);
return len;
parport_data_forward(q->pport);
mdelay(3);
qcam_set_ack(q, 1);
- if (qcam_await_ready1(q, 0))
- {
- printk("qcam: no ack to port turnaround\n");
+ if (qcam_await_ready1(q, 0)) {
+ printk(KERN_ERR "qcam: no ack to port turnaround\n");
qc_setup(q);
return len;
}
- }
- else
- {
+ } else {
int l;
+
do {
l = qcam_read_bytes(q, tmpbuf, 1);
cond_resched();
} while (l && tmpbuf[0] == 0x7e);
- l = qcam_read_bytes(q, tmpbuf+1, 2);
+ l = qcam_read_bytes(q, tmpbuf + 1, 2);
if (force_rgb) {
if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
- printk("qcam: bad EOF\n");
+ printk(KERN_ERR "qcam: bad EOF\n");
} else {
if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
- printk("qcam: bad EOF\n");
+ printk(KERN_ERR "qcam: bad EOF\n");
}
}
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;
+ struct qcam_device *qcam = (struct qcam_device *)dev;
- switch(cmd)
+ switch (cmd) {
+ case VIDIOCGCAP:
{
- case VIDIOCGCAP:
- {
- struct video_capability *b = arg;
- strcpy(b->name, "Quickcam");
- b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
- b->channels = 1;
- b->audios = 0;
- b->maxwidth = 320;
- b->maxheight = 240;
- b->minwidth = 80;
- b->minheight = 60;
- return 0;
- }
- case VIDIOCGCHAN:
- {
- struct video_channel *v = arg;
- if(v->channel!=0)
- return -EINVAL;
- v->flags=0;
- v->tuners=0;
- /* Good question.. its composite or SVHS so.. */
- 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 VIDIOCGTUNER:
- {
- struct video_tuner *v = arg;
- if(v->tuner)
- return -EINVAL;
- memset(v,0,sizeof(*v));
- strcpy(v->name, "Format");
- v->mode = VIDEO_MODE_AUTO;
- return 0;
- }
- case VIDIOCSTUNER:
- {
- struct video_tuner *v = arg;
- if(v->tuner)
- return -EINVAL;
- if(v->mode!=VIDEO_MODE_AUTO)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGPICT:
- {
- struct video_picture *p = arg;
- p->colour=0x8000;
- p->hue=0x8000;
- p->brightness=qcam->brightness<<8;
- p->contrast=qcam->contrast<<8;
- p->whiteness=qcam->whitebal<<8;
- p->depth=24;
- p->palette=VIDEO_PALETTE_RGB24;
- return 0;
+ struct video_capability *b = arg;
+
+ strcpy(b->name, "Quickcam");
+ b->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES;
+ b->channels = 1;
+ b->audios = 0;
+ b->maxwidth = 320;
+ b->maxheight = 240;
+ b->minwidth = 80;
+ b->minheight = 60;
+ return 0;
+ }
+ case VIDIOCGCHAN:
+ {
+ struct video_channel *v = arg;
+
+ if (v->channel != 0)
+ return -EINVAL;
+ v->flags = 0;
+ v->tuners = 0;
+ /* Good question.. its composite or SVHS so.. */
+ 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 VIDIOCGTUNER:
+ {
+ struct video_tuner *v = arg;
+
+ if (v->tuner)
+ return -EINVAL;
+ memset(v, 0, sizeof(*v));
+ strcpy(v->name, "Format");
+ v->mode = VIDEO_MODE_AUTO;
+ return 0;
+ }
+ case VIDIOCSTUNER:
+ {
+ struct video_tuner *v = arg;
+
+ if (v->tuner)
+ return -EINVAL;
+ if (v->mode != VIDEO_MODE_AUTO)
+ return -EINVAL;
+ return 0;
+ }
+ case VIDIOCGPICT:
+ {
+ struct video_picture *p = arg;
+
+ p->colour = 0x8000;
+ p->hue = 0x8000;
+ p->brightness = qcam->brightness << 8;
+ p->contrast = qcam->contrast << 8;
+ p->whiteness = qcam->whitebal << 8;
+ p->depth = 24;
+ p->palette = VIDEO_PALETTE_RGB24;
+ return 0;
+ }
+ case VIDIOCSPICT:
+ {
+ struct video_picture *p = arg;
+
+ /*
+ * Sanity check args
+ */
+ if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24)
+ return -EINVAL;
+
+ /*
+ * Now load the camera.
+ */
+ qcam->brightness = p->brightness >> 8;
+ qcam->contrast = p->contrast >> 8;
+ qcam->whitebal = p->whiteness >> 8;
+
+ mutex_lock(&qcam->lock);
+ parport_claim_or_block(qcam->pdev);
+ qc_setup(qcam);
+ parport_release(qcam->pdev);
+ mutex_unlock(&qcam->lock);
+ return 0;
+ }
+ case VIDIOCSWIN:
+ {
+ struct video_window *vw = arg;
+
+ if (vw->flags)
+ return -EINVAL;
+ if (vw->clipcount)
+ return -EINVAL;
+ if (vw->height < 60 || vw->height > 240)
+ 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->height = 120;
+ qcam->mode = QC_DECIMATION_2;
}
- case VIDIOCSPICT:
- {
- struct video_picture *p = arg;
-
- /*
- * Sanity check args
- */
- if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24)
- return -EINVAL;
-
- /*
- * Now load the camera.
- */
- qcam->brightness = p->brightness>>8;
- qcam->contrast = p->contrast>>8;
- qcam->whitebal = p->whiteness>>8;
-
- mutex_lock(&qcam->lock);
- parport_claim_or_block(qcam->pdev);
- qc_setup(qcam);
- parport_release(qcam->pdev);
- mutex_unlock(&qcam->lock);
- return 0;
+ if (vw->width >= 320 && vw->height >= 240) {
+ qcam->width = 320;
+ qcam->height = 240;
+ qcam->mode = QC_DECIMATION_1;
}
- case VIDIOCSWIN:
- {
- struct video_window *vw = arg;
-
- if(vw->flags)
- return -EINVAL;
- if(vw->clipcount)
- return -EINVAL;
- if(vw->height<60||vw->height>240)
- 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->height = 120;
- qcam->mode = QC_DECIMATION_2;
- }
- if(vw->width>=320 && vw->height>=240)
- {
- qcam->width = 320;
- qcam->height = 240;
- qcam->mode = QC_DECIMATION_1;
- }
- qcam->mode |= QC_MILLIONS;
+ qcam->mode |= QC_MILLIONS;
#if 0
- if(vw->width>=640 && vw->height>=480)
- {
- qcam->width = 640;
- qcam->height = 480;
- qcam->mode = QC_BILLIONS | QC_DECIMATION_1;
- }
-#endif
- /* Ok we figured out what to use from our
- wide choice */
- mutex_lock(&qcam->lock);
- parport_claim_or_block(qcam->pdev);
- qc_setup(qcam);
- parport_release(qcam->pdev);
- mutex_unlock(&qcam->lock);
- return 0;
- }
- case VIDIOCGWIN:
- {
- struct video_window *vw = arg;
- memset(vw, 0, sizeof(*vw));
- vw->width=qcam->width;
- vw->height=qcam->height;
- return 0;
+ if (vw->width >= 640 && vw->height >= 480) {
+ qcam->width = 640;
+ qcam->height = 480;
+ qcam->mode = QC_BILLIONS | QC_DECIMATION_1;
}
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- case VIDIOCGFBUF:
- case VIDIOCSFBUF:
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
- default:
- return -ENOIOCTLCMD;
+#endif
+ /* Ok we figured out what to use from our
+ wide choice */
+ mutex_lock(&qcam->lock);
+ parport_claim_or_block(qcam->pdev);
+ qc_setup(qcam);
+ parport_release(qcam->pdev);
+ mutex_unlock(&qcam->lock);
+ return 0;
+ }
+ case VIDIOCGWIN:
+ {
+ struct video_window *vw = arg;
+ memset(vw, 0, sizeof(*vw));
+ vw->width = qcam->width;
+ vw->height = qcam->height;
+ return 0;
+ }
+ case VIDIOCKEY:
+ return 0;
+ case VIDIOCCAPTURE:
+ case VIDIOCGFBUF:
+ case VIDIOCSFBUF:
+ case VIDIOCGFREQ:
+ case VIDIOCSFREQ:
+ case VIDIOCGAUDIO:
+ case VIDIOCSAUDIO:
+ return -EINVAL;
+ default:
+ return -ENOIOCTLCMD;
}
return 0;
}
size_t count, loff_t *ppos)
{
struct video_device *v = video_devdata(file);
- struct qcam_device *qcam=(struct qcam_device *)v;
+ struct qcam_device *qcam = (struct qcam_device *)v;
int len;
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);
mutex_unlock(&qcam->lock);
return len;
.read = qcam_read,
};
-static struct video_device qcam_template=
-{
+static struct video_device qcam_template = {
.name = "Colour QuickCam",
.fops = &qcam_fops,
.release = video_device_release_empty,
struct qcam_device *q;
q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
- if(q==NULL)
+ if (q == NULL)
return NULL;
q->pport = port;
q->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
NULL, 0, NULL);
- q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE)?1:0;
+ 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);
{
struct qcam_device *qcam;
- if (parport[0] != -1)
- {
+ if (parport[0] != -1) {
/* The user gave specific instructions */
int i, found = 0;
- for (i = 0; i < MAX_CAMS && parport[i] != -1; i++)
- {
+
+ for (i = 0; i < MAX_CAMS && parport[i] != -1; i++) {
if (parport[0] == port->number)
found = 1;
}
return -ENOSPC;
qcam = qcam_init(port);
- if (qcam==NULL)
+ if (qcam == NULL)
return -ENODEV;
parport_claim_or_block(qcam->pdev);
qc_reset(qcam);
- if (probe && qc_detect(qcam)==0)
- {
+ if (probe && qc_detect(qcam) == 0) {
parport_release(qcam->pdev);
parport_unregister_device(qcam->pdev);
kfree(qcam);
.detach = cq_detach,
};
-static int __init cqcam_init (void)
+static int __init cqcam_init(void)
{
printk(BANNER "\n");
return parport_register_driver(&cqcam_driver);
}
-static void __exit cqcam_cleanup (void)
+static void __exit cqcam_cleanup(void)
{
unsigned int i;
MODULE_LICENSE("GPL");
/* FIXME: parport=auto would never have worked, surely? --RR */
-MODULE_PARM_DESC(parport ,"parport=<auto|n[,n]...> for port detection method\n\
-probe=<0|1|2> for camera detection method\n\
-force_rgb=<0|1> for RGB data format (default BGR)");
+MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
+ "probe=<0|1|2> for camera detection method\n"
+ "force_rgb=<0|1> for RGB data format (default BGR)");
module_param_array(parport, int, NULL, 0);
module_param(probe, int, 0);
module_param(force_rgb, bool, 0);
projects / linux-imx.git / commitdiff