#include "bw-qcam.h"
-static unsigned int maxpoll=250; /* Maximum busy-loop count for qcam I/O */
-static unsigned int yieldlines=4; /* Yield after this many during capture */
+static unsigned int maxpoll = 250; /* Maximum busy-loop count for qcam I/O */
+static unsigned int yieldlines = 4; /* Yield after this many during capture */
static int video_nr = -1;
static unsigned int force_init; /* Whether to probe aggressively */
mdelay(1);
schedule();
count++;
- } while (value == 0xff && count<2048);
+ } while (value == 0xff && count < 2048);
q->whitebal = value;
return value;
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, "bw-qcam", NULL, NULL,
- NULL, 0, NULL);
- if (q->pdev == NULL)
- {
+ NULL, 0, NULL);
+ if (q->pdev == NULL) {
printk(KERN_ERR "bw-qcam: couldn't register for %s.\n",
- port->name);
+ port->name);
kfree(q);
return NULL;
}
static int qc_waithand(struct qcam_device *q, int val)
{
int status;
- int runs=0;
+ int runs = 0;
- if (val)
- {
- while (!((status = read_lpstatus(q)) & 8))
- {
+ if (val) {
+ while (!((status = read_lpstatus(q)) & 8)) {
/* 1000 is enough spins on the I/O for all normal
cases, at that point we start to poll slowly
until the camera wakes up. However, we are
setting it lower is much better for interactive
response. */
- if(runs++>maxpoll)
- {
+ if (runs++ > maxpoll)
msleep_interruptible(5);
- }
- if(runs>(maxpoll+1000)) /* 5 seconds */
+ if (runs > (maxpoll + 1000)) /* 5 seconds */
return -1;
}
- }
- else
- {
- while (((status = read_lpstatus(q)) & 8))
- {
+ } else {
+ while (((status = read_lpstatus(q)) & 8)) {
/* 1000 is enough spins on the I/O for all normal
cases, at that point we start to poll slowly
until the camera wakes up. However, we are
setting it lower is much better for interactive
response. */
- if(runs++>maxpoll)
- {
+ if (runs++ > maxpoll)
msleep_interruptible(5);
- }
- if(runs++>(maxpoll+1000)) /* 5 seconds */
+ if (runs++ > (maxpoll + 1000)) /* 5 seconds */
return -1;
}
}
static unsigned int qc_waithand2(struct qcam_device *q, int val)
{
unsigned int status;
- int runs=0;
+ int runs = 0;
- do
- {
+ do {
status = read_lpdata(q);
/* 1000 is enough spins on the I/O for all normal
cases, at that point we start to poll slowly
setting it lower is much better for interactive
response. */
- if(runs++>maxpoll)
- {
+ if (runs++ > maxpoll)
msleep_interruptible(5);
- }
- if(runs++>(maxpoll+1000)) /* 5 seconds */
+ if (runs++ > (maxpoll + 1000)) /* 5 seconds */
return 0;
- }
- while ((status & 1) != val);
+ } while ((status & 1) != val);
return status;
}
lastreg = reg = read_lpstatus(q) & 0xf0;
- for (i = 0; i < 500; i++)
- {
+ for (i = 0; i < 500; i++) {
reg = read_lpstatus(q) & 0xf0;
if (reg != lastreg)
count++;
won't be flashing these bits. Possibly unloading the module
in the middle of a grab? Or some timeout condition?
I've seen this parameter as low as 19 on my 450Mhz box - mpc */
- printk("Debugging: QCam detection counter <30-200 counts as detected>: %d\n", count);
+ printk(KERN_DEBUG "Debugging: QCam detection counter <30-200 counts as detected>: %d\n", count);
return 1;
#endif
return 1; /* found */
} else {
printk(KERN_ERR "No Quickcam found on port %s\n",
- q->pport->name);
+ q->pport->name);
printk(KERN_DEBUG "Quickcam detection counter: %u\n", count);
return 0; /* not found */
}
static void qc_reset(struct qcam_device *q)
{
- switch (q->port_mode & QC_FORCE_MASK)
- {
- case QC_FORCE_UNIDIR:
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
- break;
+ switch (q->port_mode & QC_FORCE_MASK) {
+ case QC_FORCE_UNIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
- case QC_FORCE_BIDIR:
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
- break;
+ case QC_FORCE_BIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ break;
- case QC_ANY:
- write_lpcontrol(q, 0x20);
- write_lpdata(q, 0x75);
+ case QC_ANY:
+ write_lpcontrol(q, 0x20);
+ write_lpdata(q, 0x75);
- if (read_lpdata(q) != 0x75) {
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
- } else {
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
- }
- break;
+ if (read_lpdata(q) != 0x75)
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ else
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
}
write_lpcontrol(q, 0xb);
{
int old_mode = q->mode;
- switch (q->transfer_scale)
- {
- case 1:
- q->mode = 0;
- break;
- case 2:
- q->mode = 4;
- break;
- case 4:
- q->mode = 8;
- break;
+ switch (q->transfer_scale) {
+ case 1:
+ q->mode = 0;
+ break;
+ case 2:
+ q->mode = 4;
+ break;
+ case 4:
+ q->mode = 8;
+ break;
}
- switch (q->bpp)
- {
- case 4:
- break;
- case 6:
- q->mode += 2;
- break;
+ switch (q->bpp) {
+ case 4:
+ break;
+ case 6:
+ q->mode += 2;
+ break;
}
- switch (q->port_mode & QC_MODE_MASK)
- {
- case QC_BIDIR:
- q->mode += 1;
- break;
- case QC_NOTSET:
- case QC_UNIDIR:
- break;
+ switch (q->port_mode & QC_MODE_MASK) {
+ case QC_BIDIR:
+ q->mode += 1;
+ break;
+ case QC_NOTSET:
+ case QC_UNIDIR:
+ break;
}
if (q->mode != old_mode)
} else {
val = q->width * q->bpp;
val2 = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
- q->transfer_scale;
+ q->transfer_scale;
}
val = DIV_ROUND_UP(val, val2);
qc_command(q, 0x13);
static inline int qc_readbytes(struct qcam_device *q, char buffer[])
{
- int ret=1;
+ int ret = 1;
unsigned int hi, lo;
unsigned int hi2, lo2;
static int state;
- if (buffer == NULL)
- {
+ if (buffer == NULL) {
state = 0;
return 0;
}
- switch (q->port_mode & QC_MODE_MASK)
- {
- case QC_BIDIR: /* Bi-directional Port */
- write_lpcontrol(q, 0x26);
- lo = (qc_waithand2(q, 1) >> 1);
- hi = (read_lpstatus(q) >> 3) & 0x1f;
- write_lpcontrol(q, 0x2e);
- lo2 = (qc_waithand2(q, 0) >> 1);
- hi2 = (read_lpstatus(q) >> 3) & 0x1f;
- switch (q->bpp)
- {
- case 4:
- buffer[0] = lo & 0xf;
- buffer[1] = ((lo & 0x70) >> 4) | ((hi & 1) << 3);
- buffer[2] = (hi & 0x1e) >> 1;
- buffer[3] = lo2 & 0xf;
- buffer[4] = ((lo2 & 0x70) >> 4) | ((hi2 & 1) << 3);
- buffer[5] = (hi2 & 0x1e) >> 1;
- ret = 6;
- break;
- case 6:
- buffer[0] = lo & 0x3f;
- buffer[1] = ((lo & 0x40) >> 6) | (hi << 1);
- buffer[2] = lo2 & 0x3f;
- buffer[3] = ((lo2 & 0x40) >> 6) | (hi2 << 1);
- ret = 4;
- break;
- }
+ switch (q->port_mode & QC_MODE_MASK) {
+ case QC_BIDIR: /* Bi-directional Port */
+ write_lpcontrol(q, 0x26);
+ lo = (qc_waithand2(q, 1) >> 1);
+ hi = (read_lpstatus(q) >> 3) & 0x1f;
+ write_lpcontrol(q, 0x2e);
+ lo2 = (qc_waithand2(q, 0) >> 1);
+ hi2 = (read_lpstatus(q) >> 3) & 0x1f;
+ switch (q->bpp) {
+ case 4:
+ buffer[0] = lo & 0xf;
+ buffer[1] = ((lo & 0x70) >> 4) | ((hi & 1) << 3);
+ buffer[2] = (hi & 0x1e) >> 1;
+ buffer[3] = lo2 & 0xf;
+ buffer[4] = ((lo2 & 0x70) >> 4) | ((hi2 & 1) << 3);
+ buffer[5] = (hi2 & 0x1e) >> 1;
+ ret = 6;
+ break;
+ case 6:
+ buffer[0] = lo & 0x3f;
+ buffer[1] = ((lo & 0x40) >> 6) | (hi << 1);
+ buffer[2] = lo2 & 0x3f;
+ buffer[3] = ((lo2 & 0x40) >> 6) | (hi2 << 1);
+ ret = 4;
break;
+ }
+ break;
+
+ case QC_UNIDIR: /* Unidirectional Port */
+ write_lpcontrol(q, 6);
+ lo = (qc_waithand(q, 1) & 0xf0) >> 4;
+ write_lpcontrol(q, 0xe);
+ hi = (qc_waithand(q, 0) & 0xf0) >> 4;
- case QC_UNIDIR: /* Unidirectional Port */
- write_lpcontrol(q, 6);
- lo = (qc_waithand(q, 1) & 0xf0) >> 4;
- write_lpcontrol(q, 0xe);
- hi = (qc_waithand(q, 0) & 0xf0) >> 4;
-
- switch (q->bpp)
- {
- case 4:
- buffer[0] = lo;
- buffer[1] = hi;
- ret = 2;
- break;
- case 6:
- switch (state)
- {
- case 0:
- buffer[0] = (lo << 2) | ((hi & 0xc) >> 2);
- q->saved_bits = (hi & 3) << 4;
- state = 1;
- ret = 1;
- break;
- case 1:
- buffer[0] = lo | q->saved_bits;
- q->saved_bits = hi << 2;
- state = 2;
- ret = 1;
- break;
- case 2:
- buffer[0] = ((lo & 0xc) >> 2) | q->saved_bits;
- buffer[1] = ((lo & 3) << 4) | hi;
- state = 0;
- ret = 2;
- break;
- }
- break;
+ switch (q->bpp) {
+ case 4:
+ buffer[0] = lo;
+ buffer[1] = hi;
+ ret = 2;
+ break;
+ case 6:
+ switch (state) {
+ case 0:
+ buffer[0] = (lo << 2) | ((hi & 0xc) >> 2);
+ q->saved_bits = (hi & 3) << 4;
+ state = 1;
+ ret = 1;
+ break;
+ case 1:
+ buffer[0] = lo | q->saved_bits;
+ q->saved_bits = hi << 2;
+ state = 2;
+ ret = 1;
+ break;
+ case 2:
+ buffer[0] = ((lo & 0xc) >> 2) | q->saved_bits;
+ buffer[1] = ((lo & 3) << 4) | hi;
+ state = 0;
+ ret = 2;
+ break;
}
break;
+ }
+ break;
}
return ret;
}
* n=2^(bit depth)-1. Ask me for more details if you don't understand
* this. */
-static long qc_capture(struct qcam_device * q, char __user *buf, unsigned long len)
+static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long len)
{
int i, j, k, yield;
int bytes;
int divisor;
int pixels_per_line;
int pixels_read = 0;
- int got=0;
+ int got = 0;
char buffer[6];
- int shift=8-q->bpp;
+ int shift = 8 - q->bpp;
char invert;
if (q->mode == -1)
qc_command(q, 0x7);
qc_command(q, q->mode);
- if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR)
- {
+ if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR) {
write_lpcontrol(q, 0x2e); /* turn port around */
write_lpcontrol(q, 0x26);
- (void) qc_waithand(q, 1);
+ qc_waithand(q, 1);
write_lpcontrol(q, 0x2e);
- (void) qc_waithand(q, 0);
+ qc_waithand(q, 0);
}
/* strange -- should be 15:63 below, but 4bpp is odd */
pixels_per_line = q->width / q->transfer_scale;
transperline = q->width * q->bpp;
divisor = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
- q->transfer_scale;
+ q->transfer_scale;
transperline = DIV_ROUND_UP(transperline, divisor);
- for (i = 0, yield = yieldlines; i < linestotrans; i++)
- {
- for (pixels_read = j = 0; j < transperline; j++)
- {
+ for (i = 0, yield = yieldlines; i < linestotrans; i++) {
+ for (pixels_read = j = 0; j < transperline; j++) {
bytes = qc_readbytes(q, buffer);
- for (k = 0; k < bytes && (pixels_read + k) < pixels_per_line; k++)
- {
+ for (k = 0; k < bytes && (pixels_read + k) < pixels_per_line; k++) {
int o;
- if (buffer[k] == 0 && invert == 16)
- {
+ if (buffer[k] == 0 && invert == 16) {
/* 4bpp is odd (again) -- inverter is 16, not 15, but output
must be 0-15 -- bls */
buffer[k] = 16;
}
- o=i*pixels_per_line + pixels_read + k;
- if(o<len)
- {
+ o = i * pixels_per_line + pixels_read + k;
+ if (o < len) {
got++;
- put_user((invert - buffer[k])<<shift, buf+o);
+ put_user((invert - buffer[k]) << shift, buf + o);
}
}
pixels_read += bytes;
}
- (void) qc_readbytes(q, NULL); /* reset state machine */
+ qc_readbytes(q, NULL); /* reset state machine */
/* Grabbing an entire frame from the quickcam is a lengthy
process. We don't (usually) want to busy-block the
}
}
- if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR)
- {
+ if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR) {
write_lpcontrol(q, 2);
write_lpcontrol(q, 6);
udelay(3);
write_lpcontrol(q, 0xe);
}
- if(got<len)
+ if (got < len)
return got;
return len;
}
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)
- {
- case VIDIOCGCAP:
+ switch (cmd) {
+ case VIDIOCGCAP:
{
struct video_capability *b = arg;
strcpy(b->name, "Quickcam");
b->minheight = 60;
return 0;
}
- case VIDIOCGCHAN:
+ case VIDIOCGCHAN:
{
struct video_channel *v = arg;
- if(v->channel!=0)
+ if (v->channel != 0)
return -EINVAL;
- v->flags=0;
- v->tuners=0;
+ 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:
+ case VIDIOCSCHAN:
{
struct video_channel *v = arg;
- if(v->channel!=0)
+ if (v->channel != 0)
return -EINVAL;
return 0;
}
- case VIDIOCGTUNER:
+ case VIDIOCGTUNER:
{
struct video_tuner *v = arg;
- if(v->tuner)
+ if (v->tuner)
return -EINVAL;
strcpy(v->name, "Format");
- v->rangelow=0;
- v->rangehigh=0;
- v->flags= 0;
+ v->rangelow = 0;
+ v->rangehigh = 0;
+ v->flags = 0;
v->mode = VIDEO_MODE_AUTO;
return 0;
}
- case VIDIOCSTUNER:
+ case VIDIOCSTUNER:
{
struct video_tuner *v = arg;
- if(v->tuner)
+ if (v->tuner)
return -EINVAL;
- if(v->mode!=VIDEO_MODE_AUTO)
+ if (v->mode != VIDEO_MODE_AUTO)
return -EINVAL;
return 0;
}
- case VIDIOCGPICT:
+ 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=qcam->bpp;
- p->palette=VIDEO_PALETTE_GREY;
+ p->colour = 0x8000;
+ p->hue = 0x8000;
+ p->brightness = qcam->brightness << 8;
+ p->contrast = qcam->contrast << 8;
+ p->whiteness = qcam->whitebal << 8;
+ p->depth = qcam->bpp;
+ p->palette = VIDEO_PALETTE_GREY;
return 0;
}
- case VIDIOCSPICT:
+ case VIDIOCSPICT:
{
struct video_picture *p = arg;
- if(p->palette!=VIDEO_PALETTE_GREY)
+ if (p->palette != VIDEO_PALETTE_GREY)
return -EINVAL;
- if(p->depth!=4 && p->depth!=6)
+ if (p->depth != 4 && p->depth != 6)
return -EINVAL;
/*
* Now load the camera.
*/
- qcam->brightness = p->brightness>>8;
- qcam->contrast = p->contrast>>8;
- qcam->whitebal = p->whiteness>>8;
+ qcam->brightness = p->brightness >> 8;
+ qcam->contrast = p->contrast >> 8;
+ qcam->whitebal = p->whiteness >> 8;
qcam->bpp = p->depth;
mutex_lock(&qcam->lock);
return 0;
}
- case VIDIOCSWIN:
+ case VIDIOCSWIN:
{
struct video_window *vw = arg;
- if(vw->flags)
+ if (vw->flags)
return -EINVAL;
- if(vw->clipcount)
+ if (vw->clipcount)
return -EINVAL;
- if(vw->height<60||vw->height>240)
+ if (vw->height < 60 || vw->height > 240)
return -EINVAL;
- if(vw->width<80||vw->width>320)
+ if (vw->width < 80 || vw->width > 320)
return -EINVAL;
qcam->width = 320;
qcam->height = 240;
qcam->transfer_scale = 4;
- if(vw->width>=160 && vw->height>=120)
- {
+ if (vw->width >= 160 && vw->height >= 120)
qcam->transfer_scale = 2;
- }
- if(vw->width>=320 && vw->height>=240)
- {
+ if (vw->width >= 320 && vw->height >= 240) {
qcam->width = 320;
qcam->height = 240;
qcam->transfer_scale = 1;
/* Ok we figured out what to use from our wide choice */
return 0;
}
- case VIDIOCGWIN:
+ case VIDIOCGWIN:
{
struct video_window *vw = arg;
+
memset(vw, 0, sizeof(*vw));
- vw->width=qcam->width/qcam->transfer_scale;
- vw->height=qcam->height/qcam->transfer_scale;
+ vw->width = qcam->width / qcam->transfer_scale;
+ vw->height = qcam->height / qcam->transfer_scale;
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;
+ 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;
}
static long qcam_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
return video_usercopy(file, cmd, arg, qcam_do_ioctl);
}
static ssize_t qcam_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
+ 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;
parport_claim_or_block(qcam->pdev);
if (qcam->status & QC_PARAM_CHANGE)
qc_set(qcam);
- len=qc_capture(qcam, buf,count);
+ len = qc_capture(qcam, buf, count);
mutex_unlock(&qcam->lock);
.ioctl = qcam_ioctl,
.read = qcam_read,
};
-static struct video_device qcam_template=
-{
+static struct video_device qcam_template = {
.name = "Connectix Quickcam",
.fops = &qcam_fops,
.release = video_device_release_empty,
{
struct qcam_device *qcam;
- if (num_cams == MAX_CAMS)
- {
+ if (num_cams == MAX_CAMS) {
printk(KERN_ERR "Too many Quickcams (max %d)\n", MAX_CAMS);
return -ENOSPC;
}
- qcam=qcam_init(port);
- if(qcam==NULL)
+ qcam = qcam_init(port);
+ if (qcam == NULL)
return -ENODEV;
parport_claim_or_block(qcam->pdev);
qc_reset(qcam);
- if(qc_detect(qcam)==0)
- {
+ if (qc_detect(qcam) == 0) {
parport_release(qcam->pdev);
parport_unregister_device(qcam->pdev);
kfree(qcam);
#ifdef MODULE
/* Do some sanity checks on the module parameters. */
if (maxpoll > 5000) {
- printk("Connectix Quickcam max-poll was above 5000. Using 5000.\n");
+ printk(KERN_INFO "Connectix Quickcam max-poll was above 5000. Using 5000.\n");
maxpoll = 5000;
}
if (yieldlines < 1) {
- printk("Connectix Quickcam yieldlines was less than 1. Using 1.\n");
+ printk(KERN_INFO "Connectix Quickcam yieldlines was less than 1. Using 1.\n");
yieldlines = 1;
}
#endif
projects / openwrt / staging / blogic.git / commitdiff